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WO2013008362A1 - Machine à laver du type à tambour - Google Patents

Machine à laver du type à tambour Download PDF

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Publication number
WO2013008362A1
WO2013008362A1 PCT/JP2012/001680 JP2012001680W WO2013008362A1 WO 2013008362 A1 WO2013008362 A1 WO 2013008362A1 JP 2012001680 W JP2012001680 W JP 2012001680W WO 2013008362 A1 WO2013008362 A1 WO 2013008362A1
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WO
WIPO (PCT)
Prior art keywords
drum
water
laundry
washing machine
water tank
Prior art date
Application number
PCT/JP2012/001680
Other languages
English (en)
Japanese (ja)
Inventor
健 蒲生
尾関　祐仁
真理子 野村
Original Assignee
パナソニック株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2011151557A external-priority patent/JP2013017556A/ja
Priority claimed from JP2011191328A external-priority patent/JP2013052057A/ja
Priority claimed from JP2011191327A external-priority patent/JP2013052056A/ja
Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Publication of WO2013008362A1 publication Critical patent/WO2013008362A1/fr

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/22—Condition of the washing liquid, e.g. turbidity
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/04—Quantity, e.g. weight or variation of weight
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/16—Washing liquid temperature
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/18—Washing liquid level
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/20—Washing liquid condition, e.g. turbidity
    • D06F2103/22—Content of detergent or additives
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/24—Spin speed; Drum movements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/02—Water supply
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/06—Recirculation of washing liquids, e.g. by pumps or diverting valves
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/10—Temperature of washing liquids; Heating means therefor
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/42—Detergent or additive supply
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting

Definitions

  • the present invention relates to a drum type washing machine for washing laundry such as clothes.
  • this type of drum-type washing machine is provided with a high-concentration detergent water generating step in which detergent is dissolved with a small amount of water before the washing step, and a high-concentration detergent water infiltration step in which the high-concentration detergent water penetrates into clothing, The cleaning performance is improved.
  • the high-concentration detergent water generation process water is supplied to the drum so that the bottom of the drum is in contact with the water surface, and the detergent is dissolved by rotating the drum at 60 to 100 rpm below the resonance rotation speed of the drum.
  • the high-concentration detergent water penetration step the high-concentration detergent water is sprayed from the baffle hole to the clothes in the drum. Further, after diluting the high-concentration detergent water and rotating the drum by 120 °, the rotation of the drum is stopped or slowed so that the high-concentration detergent water is sprayed on clothes or the like (for example, see Patent Document 1).
  • the conventional drum-type washing machine described above has a problem that it is difficult to uniformly infiltrate the laundry in the drum with high-concentration detergent water, resulting in uneven washing.
  • the reason is that high-concentration detergent water is produced with a small amount of water and cannot penetrate a small amount of high-concentration detergent water sprayed on the laundry.
  • the pickled laundry in order to remove the dirt of the laundry, the pickled laundry is immersed in the detergent water containing the detergent for a predetermined time.
  • the surface active agent, alkaline agent, enzyme, and the like can be adsorbed to decompose the dirt. After this pickling and washing, tap washing is performed.
  • the driving time and the number of times of circulation are determined regardless of the state of the laundry. For this reason, there is a problem that sufficient washing performance cannot be obtained when the amount of laundry is large or the amount of dirt is large.
  • the circulation unit is driven for a predetermined time or a predetermined number of times, so that the energy saving performance is low.
  • a drum-type washing machine of the present invention includes a water tank elastically supported in a housing, a drum rotatably provided in the water tank, a motor that rotationally drives the drum, a water supply unit that supplies washing water to the water tank, and a water tank
  • a water level detection unit that detects the level of the washing water in the inside, a circulation unit that circulates the washing water in the water tank in the drum, a control unit that controls processes such as washing, rinsing, and dehydration, and the like, Is provided.
  • the control unit puts high-concentration detergent water into the aquarium before the washing process, the rotational speed at which the centrifugal force of the drum is greater than gravity, and the high-concentration detergent water in the drum is discharged into the aquarium through the laundry.
  • a control part disperses the high concentration detergent water discharged
  • FIG. 1 is a schematic configuration diagram of a drum-type washing machine according to Embodiment 1 of the present invention.
  • FIG. 2 is a block diagram of the drum type washing machine according to the first embodiment of the present invention.
  • FIG. 3 is a time chart showing the operation of the drum type washing machine according to the first embodiment of the present invention.
  • FIG. 4A is a flowchart showing the operation of the drum type washing machine according to the first embodiment of the present invention.
  • FIG. 4B is a flowchart showing the operation of the drum type washing machine according to the first embodiment of the present invention.
  • FIG. 5 is a time chart showing the operation of the drum type washing machine according to the second embodiment of the present invention.
  • FIG. 6 is a time chart showing the operation of the drum type washing machine according to the third embodiment of the present invention.
  • FIG. 7A is a flowchart showing the operation of the drum type washing machine according to the third embodiment of the present invention.
  • FIG. 7B is a flowchart showing the operation of the drum-type washing machine according to the third embodiment of the present invention.
  • FIG. 8A is a state diagram of the laundry during operation of the drum type washing machine according to the third embodiment of the present invention.
  • FIG. 8B is a state diagram of the laundry during operation of the drum-type washing machine according to the third embodiment of the present invention.
  • FIG. 9 is a state diagram of the laundry during operation of the drum type washing machine according to the fourth embodiment of the present invention.
  • FIG. 10 is a time chart showing the operation of the drum type washing machine according to the fifth embodiment of the present invention.
  • FIG. 11 is a cross-sectional view of a drum-type washing machine according to Embodiment 6 of the present invention.
  • FIG. 12 is a cross-sectional view of a main part of a water tub of a drum type washing machine in Embodiment 6 of the present invention.
  • FIG. 13 is a block diagram showing a configuration of a control device according to Embodiment 6 of the present invention.
  • FIG. 14 is a flowchart showing the operation of the drum type washing machine in the sixth embodiment of the present invention.
  • FIG. 15 is a cross-sectional view of the drum type washing machine in the seventh embodiment of the present invention.
  • FIG. 16 is a block diagram showing a configuration of a control device according to Embodiment 7 of the present invention.
  • FIG. 17 is a flowchart showing the operation of the drum type washing machine in the seventh embodiment of the present invention.
  • FIG. 18 is a block diagram showing a configuration of a control device according to Embodiment 8 of the present invention.
  • FIG. 19A is a flowchart showing the operation of the drum type washing machine in the eighth embodiment of the present invention.
  • FIG. 19B is a flowchart showing the operation of the drum type washing machine in the eighth embodiment of the present invention.
  • FIG. 20 is a diagram illustrating the operation of the drum and the circulation pump in the washing step according to the ninth embodiment of the present invention.
  • FIG. 1 is a schematic configuration diagram of a drum-type washing machine according to Embodiment 1 of the present invention.
  • FIG. 2 is a block diagram of the drum-type washing machine according to the first embodiment of the present invention.
  • FIG. 3 is a time chart showing the operation of the drum type washing machine according to the first embodiment of the present invention.
  • 4A and 4B are flowcharts showing the operation of the drum-type washing machine according to the first embodiment of the present invention.
  • a drum-type washing machine casing 101 is provided with a water tank 102 for storing washing water in a state where it is inclined upward.
  • the washing water includes detergent water for supplying the detergent component in the washing process to wash the laundry and rinsing water for rinsing the detergent component in the rinsing process.
  • the water tank 102 is elastically supported by a suspension spring (not shown) and a damper (not shown).
  • a bottomed cylindrical drum 103 for storing laundry such as clothes is rotatably provided in the water tank 102.
  • a plurality of baffles 104 and a plurality of through holes 105 communicating with the inside of the water tank 102 are provided on the peripheral side wall surface of the drum 103.
  • An opening 106 for taking in and out the laundry is provided on the front side of the drum 103.
  • a motor 107 that rotationally drives the drum 103 is attached to the rear surface of the water tank 102.
  • the motor 107 is constituted by a brushless DC motor, and the rotation speed can be freely changed by inverter control.
  • a water supply valve 108 serving as a water supply unit for supplying wash water into the water tank 102 supplies wash water into the space between the water tank 102 and the drum 103 via a detergent case 110 for supplying a detergent provided in the water supply path 109. To do.
  • a water reservoir 111 for storing washing water is provided at the bottom of the water tank 102.
  • a heater 112 is disposed in the water reservoir 111 substantially parallel to the surface of the washing water stored in the water tank 102.
  • the detergent water stored in the water reservoir 111 is heated to a predetermined temperature suitable for washing (for example, 30 to 40 ° C.) by the heater 112.
  • the temperature of the water reservoir 111 is detected by a temperature detector 113 such as a thermistor.
  • Washing water collected in the water reservoir 111 in the water tank 102 is circulated into the drum 103 by a circulation pump 115 as a circulation part provided in the circulation water channel 114.
  • a suction portion 116 for sucking washing water communicating with the circulation water channel 114 is provided at the bottom of the water reservoir 111.
  • a discharge part 117 is provided above the opening 106 provided on the front side of the drum 103 so that the washing water is discharged into the drum 103.
  • a switching valve 118 is provided on the downstream side of the circulation pump 115.
  • the flow of the washing water is selectively switched by the switching valve 118 to either the circulation water channel 114 leading to the discharge unit 117 or the drainage channel 119 for discharging the washing water to the outside of the machine.
  • the wash water in the water reservoir 111 is discharged from the discharge part 117 toward the laundry in the drum 103 through the circulation water channel 114. Washing water after washing and rinsing is discharged out of the machine through the drainage channel 119.
  • the control unit 120 provided in the housing 101 drives the motor 107, the water supply valve 108, the heater 112, the circulation pump 115, the switching valve 118, and the like, and sequentially controls each step of washing, rinsing, and dehydration.
  • Laundry consists of washing, rinsing and dehydration processes. First, a general standard course washing process will be described.
  • the user opens the door 121 that can be freely opened and closed on the front side of the housing 101, puts the laundry into the drum 103 from the opening 106, and turns on the power switch (not shown) of the operation unit 122. Then, the operation of the drum type washing machine is started by operating a start switch (not shown). When the operation is started, the amount of laundry put in is detected by the cloth amount detector 123, the water supply valve 108 is operated to start water supply, and the motor 107 is driven.
  • the amount of water supply is set in advance according to the amount of cloth to be fed.
  • the detergent water is supplied into the water tank 102 together with the detergent through the detergent case 110 in which the detergent is introduced.
  • the water level detection unit 124 detects that a set amount of detergent water has been supplied, the water supply valve 108 is closed and water supply is stopped.
  • the drum 103 is driven to rotate forward and backward by, for example, 50 rpm by the motor 107. As a result, the laundry in the drum 103 is lifted by the baffle 104 and dropped onto the water surface from above in the drum 103 to be washed.
  • the rotation speed of the drum 103 is detected by the rotation speed detection unit 125 and controlled by the control unit 120.
  • the heater 112 When the temperature of the supplied detergent water is low, the heater 112 is energized and the washing water in the water reservoir 111 is heated to a temperature suitable for washing.
  • the heating temperature of the washing water during the hot water washing is generally 30 to 40 ° C. Heating at a low temperature of, for example, 10 ° C. or less at the time of water supply is effective in enhancing the cleaning effect.
  • Wash water stored at the bottom of the water tank 102 is heated by the heater 112.
  • the temperature of the water reservoir 111 is detected by a temperature detector 113 provided on the outer bottom thereof, and is controlled by the controller 120 so that the detergent water has a preset temperature.
  • the control unit 120 switches the switching valve 118 to the circulation water channel 114 side and drives the circulation pump 115 at a preset rotation speed.
  • the control unit 120 circulates a predetermined amount of washing water in the drum 103 to allow the detergent water to permeate the laundry being stirred in the drum 103.
  • Hot water heated in the water reservoir 111 is discharged from the discharge unit 117 and quickly penetrates into the laundry. Thereby, dissolution of the detergent can be promoted, and the effect of separating dirt from clothing can be strengthened to enhance the cleaning effect.
  • the water level in the water tank 102 is lowered by circulating the detergent water in the water reservoir 111 into the drum 103 by the circulation pump 115.
  • the controller 120 reduces the ability to circulate the detergent water by reducing the rotation speed of the circulation pump 115.
  • the circulation amount of the detergent water is reduced, and the water level in the water tank 102 can be raised.
  • the temperature of the water reservoir 111 falls.
  • the temperature of the water reservoir 111 is controlled to the set temperature again.
  • the heater 112 is submerged in the raised detergent water, and the set temperature is stably maintained by the control unit 120. Therefore, the heater 112 maintains a state in which heat can be radiated to the detergent water without being exposed from the surface of the detergent water.
  • the detergent water can be circulated in the drum 103 while being heated to an optimum temperature.
  • the centrifugal washing process is a process that is executed to allow high-concentration detergent water to penetrate into the laundry in the drum 103 before the tap washing process.
  • the operation and action of the centrifugal washing process will be described with reference to FIGS. 3 to 4B.
  • step S100 when a detergent water penetration course is set and washing starts (step S100), the amount of laundry first put in the drum 103 is detected by the cloth amount detection unit 123.
  • the control unit 120 rotates the drum 103 forward and backward at 50 rpm, for example, and compares the amount of laundry in the drum 103 with a predetermined cloth amount table (not shown) according to the magnitude of the torque of the motor 107. Detect (step S101).
  • control unit 120 rotates the drum 103 in the forward rotation direction at 50 rpm, for example (step S102), and supplies the water amount W1 that is about 30% less than the specified water amount W set to the detected cloth amount to the detergent case.
  • Water is supplied into the aquarium 102 while washing the detergent in 110.
  • the specified water amount W is 21 L, and about 15 L of water, which is about 30% smaller than this, is supplied (step S103).
  • step S104 it is determined whether the water level is set.
  • the water level at this time is set to a level that is approximately 30% less than the specified level (step S104). If the water level in the water tank 102 has reached the set water level, water supply is stopped (step S105). Since the detergent is dissolved in the water amount W1 which is about 30% less than the specified water amount W and is supplied into the water tank 102, a detergent water having a higher concentration than the detergent concentration at the time of washing is generated.
  • control unit 120 increases the rotational speed of the drum 103 so that the laundry is stuck to the inner peripheral surface of the drum 103 at a rotational speed where the centrifugal force is greater than the gravity, for example, 200 rpm (step S106).
  • the rotation speed at this time is the rotation speed at which the high-concentration detergent water in the drum 103 is discharged into the water tank 102 through the laundry.
  • control part 120 determines whether the water level of the high concentration detergent water in the water tank 102 is higher than a regulation water level in the state which maintained the rotation speed of the drum 103 at 200 rpm (step S107).
  • the control unit 120 drives the circulation pump 115 (step S108).
  • the high-concentration detergent water can be sprayed toward the cavity formed by centrifugal force near the center of the laundry, and the high-concentration detergent water can be uniformly applied to the laundry stuck to the inner peripheral surface of the drum 103. Can be sprayed. Therefore, the high-concentration detergent water sprayed on the laundry penetrates into the laundry by centrifugal force, passes through this, and is discharged into the water tank 102.
  • the high-concentration detergent water is generated and supplied with a water amount W1 that is about 30% less than the specified water amount W. Therefore, when the circulation pump 115 is driven, the amount of circulating water into the drum 103 cannot be secured. . For this reason, by squeezing out the high-concentration detergent water from the laundry in the drum 103 by centrifugal force, the high-concentration detergent water can be efficiently ejected onto the laundry.
  • the threshold value (specified water level) of the water level detection unit 124 that controls the driving of the circulation pump 115 is a height at which the suction port (not shown) of the circulation pump 115 is not exposed from the water surface of the high-concentration detergent water in the water tank 102. For example, it is set at a position 30 mm higher than the bottom surface in the water tank 102. As a result, the suction port of the circulation pump 115 is always located below the surface of the high-concentration detergent water, so that the air biting phenomenon can be prevented and the amount of water sprayed on the laundry in the drum 103 can be stably secured.
  • step S107 when the water level of the high-concentration detergent water becomes 20 mm lower than the specified water level, the control unit 120 drives the circulation pump 115 while supplying water into the water tank 102 (step S109).
  • step S110 it is determined whether it is a set time T1 (for example, 1 minute) (step S110). An equivalent result can be obtained if the set time T1 is between 30 seconds and 1 minute.
  • the control unit 120 changes the number of rotations of the drum 103 from 200 rpm to 50 rpm, and rotates the drum 103 in the normal rotation direction at 50 rpm (step S111), while washing the remaining amount of washing water in the water tank.
  • Water is supplied into 102 (step S112).
  • the remaining amount of water is 6 L, which is the difference between 21 L of the specified water amount W and about 15 L supplied with about 30% less than the specified water amount.
  • step S113 it is determined whether or not the detergent water in the water tank 102 is at the set water level.
  • the set water level at this time is set to 21 L, for example, so that the detergent water in the water tank 102 has a specified water amount.
  • the control unit 120 stops water supply (step S114).
  • the control unit 120 stops driving the circulation pump 115 (step S115), and finishes the injection of the high-concentration detergent water in the previous stage of the tapping washing process. Then, the centrifugal washing process moves to the tapping washing process (step S116).
  • the centrifugal washing step before the tapping washing step high-concentration detergent water is introduced into the water tank 102, the centrifugal force of the drum 103 is greater than the gravity, and the drum 103 The drum 103 is rotated at a rotation speed at which the high-concentration detergent water is discharged into the water tank 102 through the laundry.
  • the high-concentration detergent water discharged into the water tank 102 is sprayed on the laundry in the drum 103 by the circulation pump 115.
  • the high-concentration detergent water in the water tank 102 can be efficiently sprayed on the laundry in the drum 103, and the high-concentration detergent water sprayed on the laundry in the drum 103 is allowed to pass through the laundry by centrifugal force. Can be discharged into the water tank 102.
  • washing unevenness can be eliminated and washing performance can be improved.
  • the water tank is maintained in a state where the centrifugal force of the drum 103 is larger than the gravity and the rotation speed at which the high-concentration detergent water in the drum 103 is discharged into the water tank 102 is maintained.
  • the water level of high-concentration detergent water in 102 is detected.
  • the control unit 120 can accurately determine whether the water level is such that the air does not bite even when the circulation pump 115 is driven.
  • the threshold value of the water level detection unit 124 that controls the driving of the circulation pump 115 is set to a height at which the suction port of the circulation pump 115 is not exposed from the surface of the high-concentration detergent water in the water tank 102.
  • the suction port of the circulation pump 115 is always located below the surface of the high-concentration detergent water, so that the air biting phenomenon can be prevented and the amount of water sprayed on the laundry in the drum 103 can be stably secured.
  • a heater 112 for heating the high-concentration detergent water introduced into the water tank 102 and a temperature detection unit 113 for detecting the temperature of the high-concentration detergent water in the water tank 102 are provided, and the high-concentration detergent water is heated to a predetermined temperature. I tried to do it. Thereby, the supplied detergent can be dissolved quickly with a small amount of water, and high-concentration detergent water can be generated effectively.
  • FIG. 5 is a time chart showing the operation of the drum-type washing machine according to the second embodiment of the present invention.
  • the feature of the present embodiment is that in the centrifugal washing process in which the detergent water is infiltrated, the centrifugal force of the drum 103 is larger than the gravity before the tap washing process, and the high-concentration detergent water in the drum 103 is discharged into the water tank 102. The high-concentration detergent water is put into the water tank 102 while maintaining the rotation speed.
  • Other configurations are the same as those of the first embodiment, the same reference numerals are given to the same configurations, and the description of the first embodiment is used for the detailed description.
  • the amount of laundry first put into the drum 103 is detected by the cloth amount detection unit 123.
  • the control unit 120 rotates the drum 103 forward and backward at 50 rpm, for example, and compares the amount of laundry in the drum 103 with a predetermined cloth amount table (not shown) according to the magnitude of the torque of the motor 107. Detect.
  • the control unit 120 increases the rotational speed of the drum 103 so that the laundry is stuck to the inner peripheral surface of the drum 103 at a rotational speed where the centrifugal force is larger than gravity, for example, 200 rpm. Thereafter, the control unit 120 causes the detergent in the detergent case 110 to flow about 30% less than the specified water amount W set for the detected cloth amount while the rotation speed of the drum 103 is maintained at 200 rpm.
  • the water tank 102 is supplied with water. When the capacity of the inputted laundry is 8 kg, for example, the specified water amount W is 21 L, and about 15 L of water, which is about 30% smaller than this, is supplied.
  • the high-concentration detergent water is generated and supplied with a water amount W1 that is about 30% less than the specified water amount W, but the high-concentration detergent water contained in the laundry in the drum 103 is squeezed out by centrifugal force. Thus, it becomes possible to efficiently spray high-concentration detergent water onto the laundry.
  • the drum 103 can be rotated while the laundry in the drum 103 is dry. Accordingly, the laundry can be stuck to the inner surface of the drum 103 by centrifugal force without causing unevenness in the laundry. Further, since the water tank 102 is not supplied with water, there is no resistance to the detergent water in the rotation of the drum 103, and the vibration can be quickly raised to a high speed with low vibration. And high concentration detergent water can be sprinkled in the cavity formed in the center part of the laundry by centrifugal force. As a result, the high-concentration detergent water can be uniformly permeated into the laundry that sticks to the inner surface of the drum 103 and rotates at a high speed.
  • FIG. 6 is a time chart showing the operation of the drum type washing machine according to the third embodiment of the present invention.
  • 7A and 7B are flowcharts showing the operation of the drum-type washing machine according to the third embodiment of the present invention.
  • 8A and 8B are state diagrams of the laundry at the time of centrifugal washing and pickling washing in the washing process of the drum type washing machine according to the third embodiment of the present invention.
  • Washing includes washing, rinsing, and dehydration processes.
  • the washing process will be described with reference to FIGS. 1, 2, 7A, 7B and 8A, 8B.
  • the laundry is put into the drum 103 from the opening 106, and then the power switch (not shown) of the operation unit 122 is turned on to start.
  • a switch (not shown) is operated to start operation.
  • the control unit 120 rotates the drum 103 forward and backward at 50 rpm, for example, and compares the amount of laundry in the drum 103 with a predetermined cloth amount table (not shown) according to the magnitude of the torque of the motor 107. Detect.
  • the rotation speed of the drum 103 is detected by a general rotation speed detection unit 125 and input to the control unit 120.
  • control unit 120 rotates the drum 103 in the forward rotation direction at 50 rpm, for example (step S202), and flows the water amount set according to the detected cloth amount into the water tank 102 while flowing the detergent in the detergent case 110.
  • Water is supplied (step S203).
  • the amount of water supply is set in advance according to the amount of cloth supplied, and the detergent water is supplied into the water tank 102 together with the detergent supplied into the detergent case 110.
  • the control unit 120 detects that the set amount of detergent water has been supplied by the water level detection unit 124 (step S204), the control unit 120 closes the water supply valve 108 and stops water supply (step S205).
  • the heater 112 is energized to heat the detergent water in the water tank 102 (step S206), and the temperature detector 113 detects whether or not the set water temperature has been reached (step S207). When heated to the set temperature, the energization of the heater 112 is stopped (step S208).
  • the centrifugal washing process is first executed (step S209).
  • the rotation number of the drum 103 is set to 200 rpm, for example, and the time t1 is set to 30 seconds.
  • the drum 103 is rotated at a high speed in the direction of arrow A, the laundry is stuck to the inner peripheral surface of the drum 103 by centrifugal force as shown in FIG. 8A.
  • dirt can be effectively removed from the fibers of the laundry together with the detergent water contained in the laundry.
  • the same effect can be obtained even when the rotation speed of the drum 103 is around 300 rpm, which is equal to or lower than the resonance frequency of the drum 103.
  • the soaking washing process is performed for time t2 (step S210).
  • the drum 103 is rotated in the direction of arrow A at 20 rpm for 10 seconds and then stopped for 120 seconds.
  • the drum 103 is rotated at a low speed of 20 rpm, for example, to drop the laundry stuck to the inner peripheral surface of the drum 103 downward.
  • the laundry lifted in the direction of arrow A by the baffle 104 falls from a low position and operates to roll the bottom of the drum 103.
  • the position of the laundry can be moved at the bottom of the drum 103 where the detergent water is accumulated. Also, the laundry can be loosened, and the detergent water can be effectively infiltrated into the laundry. Thereby, the effect of pickling and washing can be enhanced. The same effect can be obtained even when the drum 103 in the pickling and washing process has a rotational speed of 15 to 30 rpm.
  • the centrifugal washing process (time t1) and the soaking and washing process (time t2) are repeatedly performed alternately and continue for 30 minutes.
  • time t1 + t2 is 160 seconds
  • the centrifugal washing step and the soaking and washing step are alternately repeated about 11 times, and then the tapping washing step is executed (step S211).
  • the drum 103 has an effect of removing dirt by rotating the drum 103 forward and backward at, for example, 50 rpm, lifting the laundry in the rotation direction by the baffle 104, and dropping the laundry from a high position in the drum 103 to apply mechanical force. Can be increased.
  • the process proceeds to a rinsing process and a dehydrating process.
  • the water tank 102 elastically supported in the housing 101, the drum 103 rotatably provided in the water tank 102, the motor 107 that rotationally drives the drum 103, and the water tank 102
  • a water supply valve 108 for supplying detergent water to the water a heating unit 112 for heating the detergent water in the water tank 102, a temperature detecting unit 113 for detecting the temperature of the detergent water in the water tank 102, and a water level of the detergent water in the water tank 102
  • a control unit 120 that controls the motor 107 and the like, and controls processes such as washing, rinsing, and dehydration.
  • the control unit 120 heats the detergent water in the water tank 102 to a predetermined temperature, the centrifugal washing process in which the laundry in the drum 103 sticks to the inner peripheral surface of the drum 103, and the driving and stopping of the drum 103.
  • the soaking and washing process is repeated alternately for a predetermined time.
  • transmitted the laundry in the drum 103, and the detergent component contained in the detergent water can be made to act effectively on the stain
  • the dirt is removed from the fibers together with the detergent water by the centrifugal effect, and the replacement of the detergent water in the fibers of the laundry is accelerated to promote the removal of the dirt substances.
  • the detergent water containing a large amount of soil components can be removed from the fiber by centrifugal force, and the detergent water containing less soil components can be added to the fibers. it can. Furthermore, by repeating each process, the replacement of the detergent water and the action of the detergent on the dirt are repeated, and the cleaning performance is further promoted. As a result, the removal of dirt can be improved and the cleaning effect can be enhanced.
  • the rotation speed of the drum 103 was set so that the laundry rolls at the bottom of the drum 103 during the soaking and washing process of the washing process.
  • the mutual position and state of the laundry in the drum 103 can be changed, and the penetration effect of the detergent water on the laundry can be enhanced to improve the cleaning effect.
  • the centrifugal washing process and the soaking and washing process are alternately executed for a predetermined time, and then the tapping washing process is executed.
  • the centrifugal washing process and the soaking and washing process are alternately executed for a predetermined time, and then the tapping washing process is executed.
  • energization of the heater 112 is stopped when the detergent water is heated to the set temperature.
  • the heater 112 is energized so that the detergent water is maintained at the set temperature during the washing process. You may make it control.
  • the penetration effect of the detergent water can be further enhanced.
  • FIG. 9 is a state diagram of the laundry at the time of soaking in the washing process of the drum type washing machine according to the fourth embodiment of the present invention.
  • the feature of the present embodiment is that the drum 103 is driven to reversely rotate in a forward and reverse direction at a predetermined angle during the soaking in the washing process so that the laundry swings at the bottom in the drum 103.
  • Other configurations are the same as those in the third embodiment, and the same reference numerals are given to the same configurations, and the detailed description uses those in the third embodiment.
  • the drum 103 is driven forward at an angle ⁇ (eg, 30 °), and then reversely driven at the same angle in the reverse direction.
  • the drum 103 is driven in reverse at a speed of 60 times per minute.
  • the laundry is in a state of sticking to the inner peripheral surface of the drum 103, and the drum 103 is driven in a reverse direction in the direction of arrow B at a predetermined angle.
  • the stuck laundry can be surely dropped downward and can be immersed in the detergent water accumulated at the bottom of the drum 103.
  • the laundry and the detergent water can be swung while the laundry is immersed in the detergent water, so that the penetration effect of the detergent water into the laundry can be enhanced and the washing effect can be improved.
  • angle ⁇ and the reverse speed at which the drum 103 is driven to reverse forward and reverse can be optimally set according to the amount of laundry, the characteristics of the motor 107, and the like.
  • FIG. 10 is a time chart showing the operation of the drum type washing machine according to the fifth embodiment of the present invention.
  • a feature of the present embodiment is that a circulation pump (circulation unit) 15 that circulates detergent water in the water tank 102 into the drum 103 is provided, and in the water tank 102 at the time of the centrifugal washing process of the washing process and at the time of the submerged washing process.
  • the detergent water discharged into the drum 103 is sprayed on the laundry in the drum 103 by the circulation pump 15.
  • Other configurations are the same as those of the first embodiment, the same reference numerals are given to the same configurations, and the description of the first embodiment is used for the detailed description.
  • the circulation pump 115 is driven, and the detergent water is sprayed on the laundry in the drum 103 from the discharge unit 117, so that the laundry stuck to the inner peripheral side surface of the drum 103 is applied.
  • the detergent water in which the detergent is dissolved can be uniformly permeated.
  • the detergent water in which the detergent is dissolved can be effectively infiltrated into the laundry fibers.
  • the detergent water can be passed through the laundry that is stationary at the bottom of the drum 103, and the detergent can be effectively acted on dirt.
  • the circulation pump 115 which is a circulation part is made to operate
  • the circulation pump 115 may be operated intermittently, and the discharge amount of the detergent water can be set optimally.
  • FIG. 11 is a cross-sectional view of the drum type washing machine in the sixth embodiment of the present invention.
  • FIG. 12 is a cross-sectional view of a main part of a water tank 202 of a drum type washing machine according to Embodiment 6 of the present invention.
  • a bottomed cylindrical water tank 202 for collecting detergent water is elastically supported in the casing 201 of the washing machine.
  • the water tank 202 is suspended from the upper part of the housing 201 by a suspension spring 231 and supported from below by a bottom plate 232 of the washing machine via a damper 233.
  • a drum 203 as a washing and dewatering tank is rotatably disposed in the water tank 202.
  • the rotary shaft 229 is tilted downward from the horizontal direction from the horizontal direction or from the front side to the back side, and the drum 203 is rotatably supported.
  • the drum 203 has a bottomed cylindrical shape having a plurality of through holes 205 on the peripheral side wall surface, and accommodates the laundry 235 therein.
  • the laundry 235 is lifted in the rotation direction by the plurality of baffles 204 provided on the inner peripheral side wall surface of the drum 203.
  • washing is performed by applying a mechanical force to the laundry 235.
  • a motor 207 is fixed to the lower part of the outer periphery of the water tank 202. The motor 207 rotates the drum 203 via the belt 236 and the pulley 237.
  • a door 221 for taking in and out the laundry 235 is provided on the front surface of the housing 201 so as to be freely opened and closed.
  • a water supply valve 208 for supplying detergent water or rinsing water into the water tank 202 is provided at the upper part of the housing 201.
  • the water supply valve 208 is connected to the water tank 202 through a detergent case 210 into which detergent is introduced.
  • the level of the detergent water supplied into the water tank 202 is detected by a water level sensor 260.
  • a heater (heating unit) 212 for heating the detergent water is disposed on the inner bottom of the water tank 202. Further, a circulation pump 215 as a circulation unit for circulating the detergent water in the water tank 202 and discharging the detergent water into the drum 203 is provided below the water tank 202. The circulation pump 215 is also driven when the detergent water or the like is drained after the steps such as washing, rinsing, and dehydration are completed.
  • the suction side of the circulation pump 215 is connected to a circulation path inlet 238 provided at the bottom of the water tank 202.
  • the discharge side of the circulation pump 215 is connected to a circulation path 214 connected to the upper part of the water tank 202 via a switching valve 218.
  • the switching valve 218 is also connected to a drain hose 239 that discharges detergent water out of the housing 201.
  • the circulation path 214 is provided with a plurality of nozzle portions 240 that can spray detergent water toward the laundry 235 in the drum 203 at the tip portion connected to the upper portion of the water tank 202.
  • a heating chamber 226 that is recessed downward is provided at the bottom of the water tank 202.
  • a heater 212 bent in a substantially U-shape is disposed in the heating chamber 226 horizontally or along the inclination of the water tank 202 or the drum 203.
  • the heater 212 is submerged in the detergent water stored in the heating chamber 226 and heats the detergent water to a predetermined temperature.
  • a water flow control plate 227 is provided in the heating chamber 226 so as to extend the side wall.
  • a control device (control unit) 224 composed of a microcomputer is disposed below the front side of the housing 201.
  • FIG. 13 is a block diagram showing the configuration of the control device according to Embodiment 1 of the present invention.
  • the control device 224 includes a cloth amount detection unit 224a for detecting the amount of laundry.
  • Cloth amount detection is performed as follows. First, the control device 224 drives the motor 207 to rotate. At this time, the rotation speed of the drum 203 is once raised to a rotation speed at which the laundry sticks to the inner peripheral side wall surface of the drum 203, for example, about 100 to 140 rpm. The control device 224 turns off the motor 207 after maintaining the rotation of the drum 203 for a predetermined time. Thereby, the inertial rotation of the drum 203 is in a state where the motor 207 is rotated. At this time, the inertial rotational force of the drum 203 gradually decreases due to the friction torque, and the drum 203 eventually stops.
  • the time from the stop of energization to the stop of the drum 203 is long when the amount of laundry is large, and short when the amount of laundry is small.
  • the amount of laundry is detected using the fact that the difference in time required for this stop is proportional to the amount of laundry.
  • control device 224 drives the motor 207, the water supply valve 208, the heater 212, the circulation pump 215, the switching valve 218 and the like, and sequentially controls each process such as washing, that is, washing, rinsing, and dehydration.
  • the user opens the door 221, puts the laundry 235 into the drum 203, turns on the power switch (not shown) of the operation unit 222 provided at the upper part on the front side of the housing 201, and starts the switch (see FIG. (Not shown) to operate the drum type washing machine.
  • the control device 224 drives the motor 207 to detect the cloth amount (step S301).
  • the control device 224 determines the detergent water level according to the cloth amount detected by the cloth amount detector 224a, operates the water supply valve 208, and supplies the detergent water into the water tank 202 together with the detergent introduced into the detergent case 210. (Step S302).
  • the controller 224 determines whether or not the detergent water in the water tank 202 has a preset water temperature (YES in step S306), and stops the heater heating (step S307). Then, the motor 207 is driven.
  • a thermistor capable of detecting the side surface of the receiving cylinder is used.
  • it will not specifically limit if it is an apparatus which can detect water temperature etc. irrespective of a thermistor.
  • the control device 224 performs agitation by driving the motor 207 in the forward / reverse rotation even during heating of the heater.
  • the forward / reverse rotation driving of the motor 207 stops for a certain time (for example, 40 to 120 seconds) and is driven for a time not exceeding the stop time (for example, 10 to 40 seconds).
  • the forward / reverse rotation driving is stopped for a certain period of time, the lower part of the laundry 235 can be brought into contact with the detergent water accumulated in the water tub 202 for a longer time than the tapping process. For this reason, penetration of the detergent water into the entire laundry can be accelerated.
  • the chemical power of a detergent that adsorbs a surfactant, an alkaline agent, an enzyme, and the like to decompose the soil can effectively act on the soil of the laundry.
  • water-soluble dirt such as wine is peeled off from the fibers of the laundry 235 and is more easily removed, it is possible to improve the cleaning performance.
  • the control device 224 increases the operation rate of the circulation pump 215 in the soaking and washing process as the amount of the laundry 235 detected by the cloth amount detection unit 224a increases.
  • the operating rate of the circulation pump 215 is the ratio of the total time that the circulation pump 215 is driven to the total time of the soaking and washing process.
  • the greater the mass of the laundry the more the upper part of the laundry is not soaked in the detergent water, so the operating rate of the circulation pump 215 is increased.
  • the driving rate of the circulation pump 215 is set to about 60 to 90% of the total time of the tapping process (step S310). Accordingly, the laundry 235 below the drum 203 is not only immersed in the detergent water accumulated at the bottom of the drum 203, but the detergent water can also permeate the laundry above the drum 203. For this reason, the adsorption time of a detergent can be lengthened. By such a process, the penetration of the detergent water into the entire laundry can be accelerated, and the chemical power of the detergent can be effectively applied to the dirt of the laundry. As a result, it is possible to improve the cleaning performance.
  • the smaller the mass of the laundry the less the laundry that is not soaked in the detergent water, so the operation rate of the circulation pump 215 is reduced.
  • the operation rate is set to about 10 to 40% of the total time of the tapping process (step S311).
  • the process proceeds to the tap washing process (step S312).
  • the drum 203 is driven to rotate forward and backward by the motor 207 at a rotation speed of, for example, about 50 rpm.
  • the plurality of baffles 204 provided on the inner peripheral side wall of the drum 203 lifts the laundry 235 in the drum 203 in the rotation direction, and drops it from above in the drum 203 onto the water surface.
  • the washing operation is performed by applying mechanical force to the laundry 235 to physically remove dirt.
  • the rotational speed of the drum 203 at this time is controlled so that the laundry is not drawn to the inner peripheral side wall surface of the drum 203 by centrifugal force, and the rotational speed of the motor 207 is controlled so as to rotate at a low speed. Further, the rotation direction of the drum 203 may be one direction or reversed. When the tapping washing process ends, the washing process ends.
  • the cloth amount detection threshold is provided in one place, but the threshold may be provided in a plurality of stages. If the operation rate of the circulation pump 215 can be changed according to the amount of cloth, it will not be specifically limited.
  • the operating rate of the circulation pump 215 is changed according to the amount of cloth.
  • the number of times the circulation pump 215 is driven in the tapping process may be changed.
  • the detergent water can penetrate into the laundry on the upper portion of the drum 203, and the adsorption time of the detergent can be increased.
  • the penetration of the detergent water into the entire laundry can be accelerated, and the chemical power of the detergent can be effectively applied to the dirt of the laundry. As a result, it is possible to improve the cleaning performance.
  • the present invention can be applied not only to a drum type washing machine but also to a drum type washing machine having a drying function.
  • the schematic configuration of the drum type washing machine is the same as that of the drum type washing machine described in the sixth embodiment.
  • the drum type washing machine further includes a stain detection unit that detects the stain of the detergent water.
  • the operation performed by the control device (control unit) 234 is different from that of the sixth embodiment.
  • the description of Embodiment 1 is incorporated.
  • FIG. 15 is a cross-sectional view of the drum type washing machine in the seventh embodiment of the present invention.
  • FIG. 16 is a block diagram showing a configuration of a control device according to Embodiment 7 of the present invention.
  • FIG. 17 is a flowchart showing the operation of the drum type washing machine in the seventh embodiment of the present invention.
  • a dirt sensor 228 as a dirt detection unit is installed in the circulation path 214 and detects the dirt of the detergent water.
  • the dirt sensor 228 is disposed on the upstream side of the circulation pump 215.
  • Steps S401 to S404 up to the stop of water supply are the same as steps S301 to S304 in the sixth embodiment.
  • the stain of the detergent water is detected (step S405).
  • the contamination of the detergent water is detected by an electrode installed in the circulation path 214 and the contamination sensor 228.
  • the stain determination unit 234b compares the detection table with a preset stain table to determine the stain on the laundry 235 in the drum 203. Accordingly, the degree of dirt on the laundry 235 is determined.
  • step S406 heater heating is started.
  • the control device 234 determines whether or not the detergent water in the water tank 202 has a preset water temperature, and if it reaches the set temperature (Y in step S407), stops the heater heating (step S408).
  • the motor 207 is driven. Although not shown, stirring of the motor 207 in the forward / reverse rotation is performed even while the heater is being heated.
  • the control device 234 increases the driving rate of the circulation pump 215 because the more the dirt on the laundry 235, the worse the adsorption rate of the detergent. For example, when the dirt determination unit 234b determines that the level is 4 or 5 (a lot of dirt) among the dirt levels 1 to 5 (Y in step S410), the control device 224 determines the operating rate of the circulation pump 215. 60 to 90% is set (step S411). As a result, the laundry 235 is not only immersed in the detergent water accumulated at the bottom of the water tank 202, but the laundry at the top of the drum 203 can also come into contact with the detergent water.
  • the adsorption rate of the detergent is improved, the penetration of the detergent water into the entire laundry can be accelerated, washing unevenness can be reduced, and the chemical power of the detergent can be effectively applied to the laundry stains. Such a process can improve the cleaning performance.
  • the control device 234 determines the excess rate of the circulation pump 215. 10% to 40% (step S412).
  • the chemical power of the detergent can be effectively applied to the laundry stains.
  • cleaning can be performed efficiently and energy saving performance can be further improved.
  • the contamination detection threshold is provided at one location, but there is no particular limitation as long as the operation rate of the circulation pump 215 can be changed according to the contamination.
  • the operating rate of the circulation pump 215 is changed according to the detergent water stain, that is, the laundry stain.
  • the number of times the circulation pump 215 is driven is simply changed in the tapping process. You may let them.
  • the detergent water can penetrate into the laundry on the top of the drum 203, and the adsorption time of the detergent can be increased.
  • the penetration of the detergent water into the entire laundry can be accelerated, the chemical power of the detergent can be effectively applied to the dirt of the laundry, and the cleaning performance can be improved.
  • Embodiment 7 is a drum type washing machine, it is applicable also to the drum type washing dryer provided with the drying function.
  • the schematic configuration of the drum type washing machine is the same as that of the drum washing machine described in the sixth embodiment, but further includes a cloth quality detection unit that detects the cloth quality of the laundry. Further, the operation performed by the control device (control unit) 244 is different from that of the sixth embodiment. For the detailed description of the other configurations, the description of Embodiment Mode 6 is incorporated.
  • FIG. 18 is a block diagram showing a configuration of a control device according to Embodiment 8 of the present invention.
  • 19A and 19B are flowcharts showing the operation of the drum-type washing machine in the third embodiment of the present invention.
  • Steps S501 to S504 until the water supply is stopped are the same as steps S301 to S304 in the sixth embodiment.
  • step S504 the water level in the water tank 202 is detected by the water level sensor 260, and the laundry 203 is stirred by rotating the drum 203 forward and backward (step S505).
  • step S506 the water level in the water tank 202 is detected again by the water level sensor 260, and a water level difference before and after stirring is detected (step S506).
  • the cloth quality determination unit 244c as the cloth quality detection unit compares the preset water level change amount table and determines the cloth quality of the laundry 235 in the drum 203. It should be noted that the cloth quality detection method is not particularly limited, such as cloth quality detection by a motor current, as well as cloth quality detection by a water level sensor.
  • the heater heating is started (step S507).
  • the control device 244 determines whether or not the detergent water in the water tank 202 has a preset water temperature, and if it reaches the set temperature (Y in step S508), stops the heater heating (step S509), The motor 207 is driven. Although not shown, stirring of the motor 207 in the forward / reverse rotation is performed even while the heater is being heated.
  • the control device 244 determines that the circulation pump 215 The operating rate is set to 60 to 90% (step S512).
  • the adsorptivity of the detergent is improved, the penetration of the detergent water into the entire laundry is accelerated, and washing unevenness is reduced. Thereby, the chemical power of the detergent can be effectively applied to the laundry stains. Such a process can improve the cleaning performance.
  • the better the water absorption of the laundry 235 the more the laundry absorbs the detergent solution and the better the adsorptivity of the detergent, so the frequency of circulation of the circulation pump 215 is reduced.
  • the control device 244 determines that the circulation pump 215
  • the operating rate is set to 10 to 40% (step S513).
  • the cloth quality detection threshold is provided at one location, but the threshold is not particularly limited as long as the operation rate of the circulation pump 215 can be changed according to the cloth quality.
  • the operating rate of the circulation pump 215 is changed according to the quality of the laundry, but the number of times that the circulation pump 215 is driven in the tapping process may be changed.
  • the detergent water can be permeated into the laundry on the upper portion of the drum 203, and the adsorption time of the detergent can be increased.
  • the penetration of the detergent water into the entire laundry can be accelerated, the chemical power of the detergent can be effectively applied to the dirt of the laundry, and the cleaning performance can be improved.
  • Embodiment 8 is a drum type washing machine, it can be applied to a drum type washing and drying machine having a drying function.
  • the schematic configuration of the drum type washing machine is the same as that of the drum washing machine described in the sixth embodiment, but the operation performed by the control device (control unit) 254 is different from that in the sixth embodiment.
  • the control device 254 increases the operating rate of the circulation pump 215 in the soaking and washing process, compared with the tap washing process.
  • Embodiment Mode 6 is incorporated.
  • FIG. 20 is a diagram illustrating operations of the drum and the circulation pump in the washing step according to the ninth embodiment of the present invention.
  • the soaking and washing process is performed for about 30 minutes, with the circulation pump 215 being driven (ON) for 120 seconds and stopped (OFF) for 40 seconds.
  • the operating rate of the circulation pump 215 is about 75%.
  • the circulation pump 215 is driven and stopped every 240 seconds.
  • the operating rate of the circulation pump 215 is 50%.
  • control device 254 controls the rotational speed of the motor 207 at a low-speed rotation that causes the laundry 203 to roll around without being attracted to the drum wall surface by centrifugal force, as in the tapping process. . Further, there is no problem even if the rotation direction of the drum 203 is one direction or reversed.
  • the circulation pump 215 is driven while the drum 203 is stopped in the pickling and washing process.
  • the detergent water contained in the upper laundry gradually moves downward. Since the circulation pump 215 can be driven at this timing, laundry water can be efficiently contained in the laundry, the penetration of the detergent water into the entire laundry is accelerated, and the cleaning effect of the detergent is exerted more quickly. Can do. Such a process can improve the cleaning performance.
  • the drum type washing machine of the present invention stops the forward / reverse rotation driving of the motor 207 for a certain period of time in the soaking and washing process. Further, the forward / reverse rotation driving is performed in a time not exceeding the stop time, and the frequency of circulation pump 215 is increased during the stop time. As a result, the penetration of the detergent water into the laundry 235 is accelerated, and the detergent water contacts the laundry 235 evenly. As a result, the detergent power can be effectively applied to the laundry stains, and the cleaning efficiency can be improved.
  • the operation rate of the circulation pump 215 is set higher in the pickling washing process than in the tap washing process, but the circulation pump 215 is simply operated in the tap washing process than in the tap washing process.
  • the number of times of driving may be increased.
  • the detergent water can be permeated into the laundry on the upper portion of the drum 203, and the adsorption time of the detergent can be increased.
  • the penetration of the detergent water into the entire laundry can be accelerated, the chemical power of the detergent can be effectively applied to the dirt of the laundry, and the cleaning performance can be improved.
  • Embodiment 9 is a drum type washing machine, it can be applied to a drum type washing machine having a drying function.
  • the washing machine according to the present invention is useful as a drum-type washing machine because it can accelerate the penetration of the detergent water into the laundry and improve washing performance by eliminating washing unevenness.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

La présente invention concerne une machine à laver du type à tambour comprenant : un tambour (103) situé rotatif dans un réservoir d'eau (102) ; un moteur (107) destiné à faire tourner et à entraîner le tambour (103) ; des unités d'amenée d'eau (108, 109) destinées à amener de l'eau de lavage au réservoir d'eau (102) ; une unité de détection de niveau d'eau (124) destinée à détecter le niveau d'eau de l'eau de lavage à l'intérieur du réservoir d'eau ; des unités de circulation (114, 115) destinées à faire circuler, à travers le tambour (103), l'eau de lavage à l'intérieur du réservoir d'eau (102) ; et une unité de commande (120) destinée à commander les étapes de lavage, de rinçage, de retrait de l'eau et similaires. L'unité de commande (120) amène une eau contenant un détergent fortement concentré au réservoir d'eau (102) avant l'étape de lavage et amène le tambour (103) à tourner à une vitesse de rotation, sachant que la force centrifuge sera supérieure à la gravité et sachant que l'eau contenant un détergent fortement concentré à l'intérieur du tambour (103) passera à travers un article lavé et sera évacuée vers l'intérieur du réservoir d'eau (102). L'unité de commande (120) utilise les unités de circulation (114, 115) pour pulvériser l'eau contenant un détergent fortement concentré évacuée dans le réservoir d'eau (102) sur l'article lavé à l'intérieur du tambour (103).
PCT/JP2012/001680 2011-07-08 2012-03-12 Machine à laver du type à tambour WO2013008362A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2011-151557 2011-07-08
JP2011151557A JP2013017556A (ja) 2011-07-08 2011-07-08 ドラム式洗濯機
JP2011191328A JP2013052057A (ja) 2011-09-02 2011-09-02 ドラム式洗濯機
JP2011-191328 2011-09-02
JP2011-191327 2011-09-02
JP2011191327A JP2013052056A (ja) 2011-09-02 2011-09-02 ドラム式洗濯機

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JP2018038520A (ja) * 2016-09-06 2018-03-15 東芝ライフスタイル株式会社 洗濯機
CN108138428A (zh) * 2015-09-30 2018-06-08 青岛海尔洗衣机有限公司 洗衣机
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