+

WO2018142531A1 - Climatiseur - Google Patents

Climatiseur Download PDF

Info

Publication number
WO2018142531A1
WO2018142531A1 PCT/JP2017/003751 JP2017003751W WO2018142531A1 WO 2018142531 A1 WO2018142531 A1 WO 2018142531A1 JP 2017003751 W JP2017003751 W JP 2017003751W WO 2018142531 A1 WO2018142531 A1 WO 2018142531A1
Authority
WO
WIPO (PCT)
Prior art keywords
unit
indoor
current value
indoor fan
air
Prior art date
Application number
PCT/JP2017/003751
Other languages
English (en)
Japanese (ja)
Inventor
宏満 菊地
Original Assignee
三菱電機株式会社
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
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2017/003751 priority Critical patent/WO2018142531A1/fr
Publication of WO2018142531A1 publication Critical patent/WO2018142531A1/fr

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56—Remote control

Definitions

  • the present invention relates to an air conditioner, and more particularly to an overcurrent suppressing function of an indoor unit.
  • the heat pump type air conditioner includes an outdoor unit that is a heat source side unit and an indoor unit that is a load side unit.
  • the outdoor unit includes a compressor and an outdoor heat exchanger, and the indoor unit includes an expansion valve, an indoor heat exchanger, an indoor fan, and a motor.
  • the refrigerant circuit is configured such that the outdoor unit and the indoor unit are connected by a refrigerant pipe and the refrigerant circulates.
  • the air conditioner absorbs heat from the air in the air-conditioning target space that is the heat exchange target during the cooling operation and evaporates the refrigerant, and during the heating operation, the air is converted to the air in the air-conditioning target space that is the heat exchange target.
  • the refrigerant is condensed by dissipating heat, and air conditioning of the air-conditioning target space is performed.
  • an indoor fan driving method of the indoor unit there is a pulley driving method in which an indoor fan and a motor for driving the indoor fan are connected by a pulley belt (for example, see Patent Document 1).
  • the rotational speed of the indoor fan is changed and the air volume is adjusted.
  • the air conditioner may increase the operating current value of the indoor unit due to voltage fluctuation, static pressure change, etc. during operation of the indoor unit, but if the operating current value continues to increase and exceeds the abnormal stop current value It is determined that there is an abnormality and the operation of the indoor unit is stopped. Therefore, even if the operating current value of the indoor unit continues to increase, in order to avoid the abnormal stop of the indoor unit and continue the operation, the rotational speed of the indoor fan is reduced during the operation of the indoor unit, It is necessary to suppress the operating current value of the unit below the abnormal stop current value.
  • the indoor unit of the air conditioner may be used as a high-temperature and high-humidity room or an external air conditioner in which the temperature and humidity are controlled with high accuracy and constant.
  • the basic specification is to continue the operation of the indoor fan and continue to supply air to the indoor heat exchanger, so the operation of the indoor unit due to voltage fluctuation, static pressure change, etc. during the operation of the indoor unit. Even when the current value rises, it is necessary to continue the operation of the indoor fan. Therefore, it is necessary to reduce the number of rotations of the indoor fan during operation of the indoor unit and to suppress the operation current value of the indoor unit to be equal to or less than the abnormal stop current value.
  • the present invention has been made to solve the above-described problems, and even when the operating current value of the indoor unit increases, the increase of the operating current value can be suppressed and the operation of the indoor unit can be continued.
  • the object is to provide an air conditioner.
  • An air conditioner includes an outdoor unit and an indoor unit, and the indoor unit blows air to an indoor heat exchanger that exchanges heat between air and a refrigerant, and to the indoor heat exchanger.
  • a determination unit that determines whether the operating current value detected by the current detection unit exceeds a reference current value, wherein the reference current value is lower than an abnormal stop current value at which the indoor unit abnormally stops
  • the rotation control unit is configured to reduce the rotation speed of the indoor fan when the determination unit determines that the operating current value exceeds the reference current value.
  • the rotation control unit decreases the rotation speed of the indoor fan when the determination unit determines that the operating current value exceeds the reference current value. Therefore, even when the operating current value of the indoor unit increases, the number of rotations of the indoor fan can be reduced to suppress the increase of the operating current value and the operation of the indoor unit can be continued.
  • FIG. 1 It is a figure which shows the refrigerant circuit of the air conditioning apparatus which concerns on Embodiment 1 of this invention. It is a perspective view which shows the inside of the indoor unit of the air conditioning apparatus which concerns on Embodiment 1 of this invention. It is a functional block diagram of the control apparatus and remote control of the air conditioning apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows an example of the air volume-static pressure characteristic of the indoor fan of the air conditioning apparatus which concerns on Embodiment 1 of this invention. It is a flowchart which shows control of the indoor unit of the air conditioning apparatus which concerns on Embodiment 1 of this invention. It is a flowchart which shows control of the indoor unit of the air conditioning apparatus which concerns on Embodiment 2 of this invention.
  • FIG. 1 is a diagram illustrating a refrigerant circuit of the air-conditioning apparatus 1 according to Embodiment 1 of the present invention.
  • the air-conditioning apparatus 1 according to Embodiment 1 includes an outdoor unit 10 and an indoor unit 20.
  • the air conditioner 1 includes a refrigerant circuit in which the outdoor unit 10 and the indoor unit 20 are connected by a refrigerant pipe and the refrigerant circulates.
  • the outdoor unit 10 includes a compressor 11, a four-way valve 12, an outdoor heat exchanger 13, a supercooling heat exchanger 14, an outdoor expansion valve 15, a first operation valve 16, a second operation valve 17, and an accumulator 18.
  • the indoor unit 20 includes an indoor expansion device 21, an indoor heat exchanger 22, and an indoor fan 23.
  • the compressor 11, the four-way valve 12, the outdoor heat exchanger 13, the supercooling heat exchanger 14, the indoor expansion device 21, the indoor heat exchanger 22, and the accumulator 18 are sequentially connected by refrigerant piping.
  • the compressor 11 compresses the refrigerant to a high temperature and a high pressure.
  • the four-way valve 12 is a flow path switching means for switching the connection relationship in the refrigerant circuit in accordance with an operation state such as cooling operation or heating operation.
  • a device other than the four-way valve 12 such as a combination of a two-way valve and a three-way valve may be used.
  • the outdoor heat exchanger 13 is, for example, a fin-and-tube type constituted by a heat transfer tube and a large number of fins, and performs heat exchange between the refrigerant and the outdoor air.
  • the outdoor heat exchanger 13 acts as a condenser during the cooling operation, and acts as an evaporator during the heating operation.
  • the supercooling heat exchanger 14 is, for example, a double tube type configured by combining circular pipes having different pipe diameters, and supercools the refrigerant flowing from the outdoor heat exchanger 13 to the indoor unit 20 during the cooling operation. Is to do.
  • the first operation valve 16 is provided in a refrigerant pipe connecting the supercooling heat exchanger 14 and the indoor unit 20 and opens and closes the refrigerant flow path.
  • the 2nd operation valve 17 is provided in the refrigerant
  • the accumulator 18 is provided between the suction side of the compressor 11 and the four-way valve 12 and stores excess refrigerant.
  • the outdoor expansion valve 15 branches from between the supercooling heat exchanger 14 and the first operation valve 16, and is provided in a refrigerant pipe connected between the accumulator 18 and the four-way valve 12.
  • the outdoor expansion valve 15 is composed of, for example, an electronic expansion valve, and adjusts the flow rate of the refrigerant by setting the opening, and functions as a pressure reducing valve or an expansion valve to decompress and expand the refrigerant. is there.
  • the indoor throttling device 21 is composed of, for example, an electronic expansion valve, and adjusts the refrigerant flow rate by setting the opening, and functions as a decompression valve or an expansion valve to decompress and expand the refrigerant.
  • the indoor side heat exchanger 22 is, for example, a fin-and-tube type constituted by a heat transfer tube and a large number of fins, and performs heat exchange between the refrigerant and room air.
  • the indoor heat exchanger 22 acts as an evaporator during the cooling operation, and acts as a condenser during the heating operation.
  • the indoor fan 23 supplies air to the indoor heat exchanger 22 and is rotated by an inverter.
  • the indoor fan 23 can adjust the air volume by changing the rotational speed.
  • the indoor unit 20 includes a control device 50 that controls the operation of the indoor fan 23 and the like, and a remote controller 60 that can transmit and receive information to and from the control device 50. Note that the control device 50 and the remote controller 60 are connected by wire or wirelessly.
  • the control device 50 controls the operation of the air conditioner 1 based on the information received from the remote controller 60, and transmits the operating status of the indoor unit 20 to the remote controller 60.
  • the remote controller 60 transmits information received from the user to the control device 50, and the operating status of the indoor unit 20 is displayed on the display unit 63 (see FIG. 3 described later) based on the information received from the control device 50. Display and inform the user.
  • the refrigerant discharged from the compressor 11 flows into the outdoor heat exchanger 13 through the four-way valve 12 and exchanges heat with outdoor air in the outdoor heat exchanger 13.
  • the refrigerant that has exchanged heat with outdoor air in the outdoor heat exchanger 13 is subcooled in the supercooling heat exchanger 14 and then flows into the indoor unit 20. At this time, a part of the refrigerant flows into the supercooling heat exchanger 14 via the outdoor expansion valve 15 and then flows into the accumulator 18.
  • the refrigerant that has flowed into the indoor unit 20 is depressurized by the indoor expansion device 21, and then flows into the indoor heat exchanger 22, where it heat-exchanges with the indoor air to cool the indoor air. Thereafter, the refrigerant flowing out of the indoor heat exchanger 22 is stored in the accumulator 18 via the four-way valve 12 of the outdoor unit 10, and the refrigerant stored in the accumulator 18 is again sucked into the compressor 11.
  • FIG. 2 is a perspective view showing the inside of the indoor unit 20 of the air-conditioning apparatus 1 according to Embodiment 1 of the present invention.
  • the arrow in FIG. 2 has shown the flow of the wind.
  • the indoor unit 20 has a housing 26 having a suction port (not shown) in the lower portion and an air outlet 25 formed in the upper portion.
  • the device 22, the indoor fan 23, the motor 24 for driving the indoor fan 23, and the control device 50 are accommodated.
  • An indoor fan 23 and a motor 24 are disposed above the indoor heat exchanger 22, and a control device 50 is disposed below the indoor heat exchanger 22.
  • the indoor fan 23 is composed of, for example, a sirocco fan, and is rotationally driven by driving of a motor 24. By this rotational driving, the indoor fan 23 is moved upward from a suction port below the indoor heat exchanger 22 inside. An air flow toward the air outlet 25 is formed. And the air blown out from the blower outlet 25 is supplied to the indoor load side by direct blowing or duct connection. The operation of the indoor fan 23 is controlled by the control device 50.
  • FIG. 3 is a functional block diagram of control device 50 and remote control 60 of air-conditioning apparatus 1 according to Embodiment 1 of the present invention.
  • the control device 50 includes a rotation control unit 51, a current detection unit 52, an air volume calculation unit 53, a determination unit 54, and a communication unit 55.
  • the operation of the indoor fan 23 is controlled based on the above.
  • the control device 50 is, for example, dedicated hardware or a CPU that executes a program stored in a memory (also referred to as a central processing unit, a central processing unit, a processing unit, a processing unit, a microprocessor, a microcomputer, or a processor). It consists of
  • the rotation control unit 51 controls the rotation speed of the indoor fan 23 by driving the motor 24 with an inverter. In the case of inverter driving, the rotation control unit 51 controls the rotation of the indoor fan 23 so that the rotation speed N is set by the remote controller 60. The rotation speed N is controlled.
  • the current detector 52 detects the operating current value I supplied to the motor 24.
  • the rotation control unit 51 basically controls the rotation speed N of the indoor fan 23 so that the rotation speed N is set by the remote controller 60.
  • the rotation control unit 51 prevents the stall prevention.
  • the rotational speed N of the indoor fan 23 is controlled so as to be smaller than the operation level current value Is. That is, the rotation control unit 51 decreases the rotation speed N of the indoor fan 23.
  • the air volume calculation unit 53 calculates the air volume Q blown from the indoor fan 23 from the value of the operating current value I detected by the current detection unit 52 and the rotation speed N of the indoor fan 23 controlled by the rotation control unit 51. It is. That is, when the motor 24 is inverter-driven as described above, the operating current value I, the rotational speed N, and the air volume Q have a predetermined relationship.
  • the air volume calculation unit 53 stores the relationship between the operating current value I, the rotational speed N, and the air volume Q according to the model of the indoor fan 23. Based on the relationship, the operating current value I and the rotational speed are stored.
  • the air volume Q is calculated from N.
  • the determination unit 54 controls the indoor unit 20 according to the operating current value I and the rotational speed N.
  • the control device 50 sets the stall prevention operation level current value Is to a level lower than the abnormal stop current value, so that the rotational speed N of the indoor fan 23 can be set even if the operating current value I increases for some reason. It has control which makes it decrease and suppresses the operating current value I of an indoor unit below an abnormal stop current value, and prevents the indoor unit 20 from stopping abnormally.
  • the stall prevention operation level current value Is is a maximum current value when the indoor unit 20 is not used at the maximum load.
  • the communication unit 55 transmits and receives information such as the rotation speed N of the indoor fan 23 to and from the remote controller 60.
  • the remote controller 60 includes an operation unit 61, a remote control side communication unit 62, and a display unit 63, and transmits information received from the user to the control device 50.
  • the operation unit 61 is composed of buttons, for example, and receives information from the user.
  • the remote controller side communication unit 62 transmits and receives information received from the user to and from the communication unit 55.
  • the display unit 63 displays the operating status of the indoor unit 20 based on the information received from the communication unit 55 and notifies the user.
  • FIG. 4 is a diagram showing an example of the air volume-static pressure characteristics of the indoor fan 23 of the air-conditioning apparatus 1 according to Embodiment 1 of the present invention.
  • the horizontal axis indicates the amount of air blown from the indoor fan 23, and the vertical axis indicates the total static pressure.
  • the static pressure range in which the indoor fan 23 can be operated is the total static pressure.
  • P 390 to 1240 [Pa].
  • the settable rotation speed N of the indoor fan 23 is determined by the model of the indoor unit 20, and in the first embodiment, the rotation control unit 51 sets the rotation speed N of the indoor fan 23 to the maximum rotation speed. It is possible to set from a certain N1 to a minimum rotational speed N7.
  • FIG. 5 is a flowchart showing control of the indoor unit 20 of the air-conditioning apparatus 1 according to Embodiment 1 of the present invention.
  • control of the indoor unit 20 of the air-conditioning apparatus 1 according to Embodiment 1 will be described with reference to FIG.
  • the rotation control unit 51 starts the operation of the indoor fan 23 at the initial rotation number N0.
  • the current detection unit 52 samples the operation current value I every predetermined time (for example, 30 seconds). Then, the determination unit 54 determines whether or not the operating current value I exceeds the stall prevention operation level current value Is (step S101).
  • step S101 If the determination unit 54 determines that the operating current value I exceeds the stall prevention operation level current value Is (Yes in step S101), the process proceeds to step S102. On the other hand, when the determination unit 54 determines that the operating current value I does not exceed the stall prevention operation level current value Is (No in step S101), the process proceeds to step S105.
  • step S102 the determination unit 54 determines whether or not the rotation speed N of the indoor fan 23 is the minimum rotation speed Nmin (N7). If the determination unit 54 determines that the rotation speed N of the indoor fan 23 is the minimum rotation speed Nmin (Yes in step S102), the determination unit 54 abnormally stops the indoor unit 20 (step S103), and returns to step S101. On the other hand, when the determination unit 54 determines that the rotation speed N of the indoor fan 23 is not the minimum rotation speed Nmin (No in step S102), the rotation control unit 51 decreases the rotation speed N of the indoor fan 23 from the current level. Then, the indoor fan 23 is operated (step S104), and the process returns to step S101. For example, when the current rotation speed N of the indoor fan 23 is set to N1, the rotation control unit 51 sets the rotation speed N to N2 and operates the indoor fan 23.
  • step S105 the determination unit 54 determines whether or not the rotational speed N of the indoor fan 23 is the initial rotational speed N0.
  • the rotation control unit 51 continues the operation of the indoor fan 23 at the initial rotation speed N0 (Ste S106) and return to Step S101.
  • the determination unit 54 determines that the rotation speed N of the indoor fan 23 is not the initial rotation speed N0 (No in step S105)
  • the process proceeds to step S107.
  • step S107 the determination unit 54 determines whether or not the rotation speed N of the indoor fan 23 is the maximum rotation speed Nmax (N1). If the determination unit 54 determines that the rotation speed N of the indoor fan 23 is the maximum rotation speed Nmax (Yes in step S107), the determination unit 54 returns to step S101. On the other hand, when the determination unit 54 determines that the rotation speed N of the indoor fan 23 is not the maximum rotation speed Nmax (No in step S107), the rotation control unit 51 increases the rotation speed N of the indoor fan 23 more than the current time. Then, the indoor fan 23 is operated (step S108), and the process returns to step S101. For example, when the current rotation speed N of the indoor fan 23 is set to N7, the rotation control unit 51 operates the indoor fan 23 with the rotation speed N set to N6.
  • the air-conditioning apparatus 1 includes the outdoor unit 10 and the indoor unit 20, and the indoor unit 20 includes the indoor-side heat exchanger 22 that performs heat exchange between the air and the refrigerant,
  • the indoor fan 23 that blows air to the indoor heat exchanger 22 and a control device 50 that controls the indoor unit 20 are provided.
  • the control device 50 includes a rotation control unit 51 that controls the rotation speed of the indoor fan 23, and an indoor fan.
  • a current detection unit 52 that detects the operation current value of 23, and a determination unit 54 that determines whether or not the operation current value detected by the current detection unit 52 exceeds the stall prevention operation level current value Is.
  • the operation level current value Is is set to a level lower than the abnormal stop current value at which the indoor unit 20 abnormally stops.
  • the rotation control unit 51 determines that the operation unit current has a stall prevention operation level voltage. If it is determined that exceeds the value it Is, is intended to reduce the rotation speed of the indoor fan 23.
  • the stall prevention operation level current value Is is set to a level lower than the abnormal stop current value at which the indoor unit 20 stops abnormally, and the operating current value I increases to cause the stall.
  • the prevention operation level current value Is is exceeded, the rotational speed N of the indoor fan 23 is decreased. By doing so, it is possible to reduce the operating current value I and prevent the indoor unit 20 from immediately stopping abnormally. That is, the operation of the indoor unit 20 can be continued while suppressing an increase in the operating current value I.
  • Embodiment 2 of the present invention will be described, but the description overlapping with Embodiment 1 will be omitted, and the same reference numerals will be given to the same or corresponding parts as those in Embodiment 1.
  • the operating current value I prevents the stall even if the rotational speed N of the indoor fan 23 is the minimum rotational speed.
  • the operation level current value Is is exceeded, and the indoor unit 20 is abnormally stopped.
  • the user notices an abnormality in the indoor unit 20 for the first time. Therefore, the user cannot notice the abnormality until the indoor unit 20 abnormally stops.
  • the air conditioner 1 when any abnormality such as voltage fluctuation or static pressure change occurs in the indoor unit 20, the user notices that before the indoor unit 20 abnormally stops. It is to be able to let you.
  • FIG. 6 is a flowchart showing control of the indoor unit 20 of the air-conditioning apparatus 1 according to Embodiment 2 of the present invention.
  • control of the indoor unit 20 of the air-conditioning apparatus 1 according to Embodiment 2 will be described with reference to FIG.
  • the rotation control unit 51 starts the operation of the indoor fan 23 at the initial rotation number N0.
  • the current detection unit 52 samples the operation current value I every predetermined time (for example, 30 seconds). Then, the determination unit 54 determines whether or not the operating current value I exceeds the stall prevention operation level current value Is (step S101).
  • step S101 If the determination unit 54 determines that the operating current value I exceeds the stall prevention operation level current value Is (Yes in step S101), the process proceeds to step S102. On the other hand, when the determination unit 54 determines that the operating current value I does not exceed the stall prevention operation level current value Is (No in step S101), the process proceeds to step S105. Steps S105 to S108 are the same as those in the first embodiment, and thus description thereof is omitted.
  • step S102 the determination unit 54 determines whether or not the rotation speed N of the indoor fan 23 is the minimum rotation speed Nmin (N7). If the determination unit 54 determines that the rotation speed N of the indoor fan 23 is the minimum rotation speed Nmin (Yes in step S102), the determination unit 54 abnormally stops the indoor unit 20 (step S103), and returns to step S101. On the other hand, when the determination unit 54 determines that the rotation speed N of the indoor fan 23 is not the minimum rotation speed Nmin (No in step S102), the rotation control unit 51 decreases the rotation speed N of the indoor fan 23 from the current level. Then, the indoor fan 23 is operated (step S104), and the process proceeds to step S201.
  • step S201 the rotation control unit 51 has decreased the number of rotations N of the indoor fan 23 from the current time, so the number of rotations is decreased by 1, and the process proceeds to step S202. It should be noted that the number of revolutions in the initial state is zero.
  • step S202 the determination unit 54 determines whether or not the number of rotations is reduced once. If the determination unit 54 determines that the number of revolutions is not one (No in step S202), the determination unit 54 proceeds to step S204. On the other hand, when the determination unit 54 determines that the number of rotations is decreased (Yes in step S202), the rotation control unit 51 starts counting the timer T (step S203), and proceeds to step S204.
  • step S204 the determination unit 54 determines whether or not the timer T has reached the reference number of times (for example, 3 times) within ⁇ T. If the timer T determines that the number of rotations down has not reached the reference number within ⁇ T, that is, less than the reference number (No in step S204), the determination unit 54 returns to step S101. On the other hand, when the determination unit 54 determines that the number of rotations down reaches the reference number within ⁇ T (Yes in step S204), the communication unit 55 notifies the remote controller 60 of the abnormality (step S205). Return to step S101.
  • the reference number of times for example, 3 times
  • the number of rotation speed reductions is reset when the communication unit 55 notifies the remote controller 60 of an abnormality or when the indoor unit 20 stops.
  • the timer T is reset when ⁇ T has elapsed since the count started, when the communication unit 55 notifies the remote controller 60 of an abnormality, or when the indoor unit 20 is stopped.
  • the display unit 63 is notified of the abnormality.
  • the remote controller 60 may be provided with sound generating means such as a buzzer, and a sound may be generated by the sound generating means to notify the abnormality, or the remote controller 60 may be provided with light emitting means such as an LED. The abnormality may be notified by blinking the light emitting means.
  • the number of times that the determination unit 54 does not determine that an abnormality has occurred when it occurs temporarily in the course of operation, not due to an abnormality In addition, when the abnormality occurs, the number of times that the communication unit 55 can notify the user as soon as possible is, for example, three times, but is not limited thereto.
  • the determination unit 54 does not determine that an abnormality has occurred.
  • the time is set according to the number of times of reference.
  • the control device 50 includes the communication unit 55 that transmits and receives information to and from the remote controller 60, and the rotation control unit 51 determines the rotation speed of the indoor fan 23. If it is decreased, the number of rotations down is counted, and if the determination unit 54 determines that the number of rotations down has reached the reference number, the communication unit 55 notifies the remote controller 60 of the abnormality.
  • the operation of the indoor unit 20 is continued while reducing the rotation speed of the indoor fan 23.
  • the remote controller 60 Abnormality is notified. Therefore, when any abnormality such as voltage fluctuation or static pressure change occurs in the indoor unit 20, it can be noticed to the user before the indoor unit 20 abnormally stops.
  • Embodiment 3 FIG.
  • Embodiment 3 of the present invention will be described, but the description overlapping with Embodiments 1 and 2 will be omitted, and the same or corresponding parts as those in Embodiments 1 and 2 will be denoted by the same reference numerals. .
  • the operating current value I exceeds the stall prevention operation level current value Is, it is assumed that the operating current value I then exceeds the abnormal stop current value.
  • the rotational speed N of the fan 23 is decreased, and the increase in the operating current value I is suppressed.
  • the usage environment of the indoor unit 20 is various and may not be used at the maximum load. For example, depending on the usage environment of the indoor unit 20, there may be no problem in the operating range where the operating current value I is up to I3.
  • the wiring diameter of the indoor unit 20 is determined based on the maximum current within the operable range. When the indoor unit 20 is not used at the maximum load, the wiring diameter is over-specification, and the construction cost is excessive. there is a possibility.
  • the stall prevention operation level current value Is can be set from the remote controller 60, and the user can prevent stall according to the usage environment of the indoor unit 20.
  • the operating level current value Is can be set.
  • the air conditioning apparatus 1 can set the stall prevention operation level current value Is from the remote controller 60.
  • the user can set the stall prevention operation level current value Is according to the usage environment of the indoor unit 20, so that the indoor unit 20 according to the operation range can be set.
  • the wire diameter can be selected, and construction costs can be reduced.
  • the stall prevention operation level current value Is corresponds to the “reference current value” of the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

L'invention concerne un climatiseur comportant une unité extérieure et une unité intérieure. L'unité intérieure comporte : un échangeur thermique côté intérieur qui échange de la chaleur entre l'air et un réfrigérant ; un ventilateur intérieur qui souffle de l'air vers l'échangeur thermique côté intérieur ; et un dispositif de commande qui commande l'unité intérieure. Le dispositif de commande comporte : une unité de commande de rotation qui commande la vitesse de rotation du ventilateur intérieur ; une unité de détection de courant qui détecte la valeur de courant de fonctionnement du ventilateur intérieur ; et une unité de détermination qui détermine si la valeur de courant de fonctionnement détectée par l'unité de détection de courant dépasse une valeur de courant de référence. La valeur de courant de référence est réglée à un niveau inférieur à une valeur de courant d'arrêt anormal à laquelle l'unité intérieure s'arrête à cause d'une anomalie. L'unité de commande de rotation réduit la vitesse de rotation du ventilateur intérieur lorsque l'unité de détermination détermine que la valeur de courant de fonctionnement dépasse la valeur de courant de référence.
PCT/JP2017/003751 2017-02-02 2017-02-02 Climatiseur WO2018142531A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/003751 WO2018142531A1 (fr) 2017-02-02 2017-02-02 Climatiseur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/003751 WO2018142531A1 (fr) 2017-02-02 2017-02-02 Climatiseur

Publications (1)

Publication Number Publication Date
WO2018142531A1 true WO2018142531A1 (fr) 2018-08-09

Family

ID=63039445

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/003751 WO2018142531A1 (fr) 2017-02-02 2017-02-02 Climatiseur

Country Status (1)

Country Link
WO (1) WO2018142531A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010084968A (ja) * 2008-09-30 2010-04-15 Mitsubishi Electric Corp 冷凍サイクル装置
JP2013002719A (ja) * 2011-06-15 2013-01-07 Mitsubishi Heavy Ind Ltd 空気調和機
WO2013031597A1 (fr) * 2011-08-31 2013-03-07 三洋電機株式会社 Dispositif de climatisation et son procédé de commande
JP2016070619A (ja) * 2014-09-30 2016-05-09 三菱重工業株式会社 室外機ユニット

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010084968A (ja) * 2008-09-30 2010-04-15 Mitsubishi Electric Corp 冷凍サイクル装置
JP2013002719A (ja) * 2011-06-15 2013-01-07 Mitsubishi Heavy Ind Ltd 空気調和機
WO2013031597A1 (fr) * 2011-08-31 2013-03-07 三洋電機株式会社 Dispositif de climatisation et son procédé de commande
JP2016070619A (ja) * 2014-09-30 2016-05-09 三菱重工業株式会社 室外機ユニット

Similar Documents

Publication Publication Date Title
JP6642379B2 (ja) 空調機
US10168066B2 (en) Air conditioner with outdoor fan control in accordance with suction pressure and suction superheating degree of a compressor
JP6636173B2 (ja) 空気調和装置及び空気調和システム
WO2009157200A1 (fr) Procédé pour juger de la quantité d’agent frigorigène dans un climatiseur et climatiseur
US20160290669A1 (en) Air-conditioning apparatus
JP2017036890A (ja) 空調室内機
JP6595288B2 (ja) 空気調和機
JP2018185118A (ja) 空気調和装置
WO2016016913A1 (fr) Dispositif de climatisation
AU2016346536A1 (en) Air conditioner
JP6032330B2 (ja) 空調機
JP6297176B2 (ja) 室内機及びこれを用いた空気調和装置
WO2018134888A1 (fr) Climatiseur
WO2016136979A1 (fr) Dispositif à cycle frigorifique
WO2018037496A1 (fr) Dispositif de climatisation
JP2010007996A (ja) 空気調和装置の試運転方法および空気調和装置
JP2018151102A (ja) 空気調和装置
JP2007212023A (ja) 空気調和装置
WO2018142531A1 (fr) Climatiseur
WO2019187760A1 (fr) Dispositif de climatisation
JP7465827B2 (ja) 冷凍サイクル装置
KR101029988B1 (ko) 직접팽창방식 공조기의 냉매 흐름량 변화에 따른 송풍기 풍량 자동 제어 방법
EP1677058A2 (fr) Méthode de régulation de surcharge de refroidissement d'un système de conditionnement d'air
KR101153421B1 (ko) 에어컨의 응축용량 제어 방법
JP5245575B2 (ja) 空気調和装置の冷媒量判定方法および空気調和装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17895285

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17895285

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP

点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载