+

WO2018134888A1 - Climatiseur - Google Patents

Climatiseur Download PDF

Info

Publication number
WO2018134888A1
WO2018134888A1 PCT/JP2017/001398 JP2017001398W WO2018134888A1 WO 2018134888 A1 WO2018134888 A1 WO 2018134888A1 JP 2017001398 W JP2017001398 W JP 2017001398W WO 2018134888 A1 WO2018134888 A1 WO 2018134888A1
Authority
WO
WIPO (PCT)
Prior art keywords
drain
drain pump
air conditioner
stopped
heat exchanger
Prior art date
Application number
PCT/JP2017/001398
Other languages
English (en)
Japanese (ja)
Inventor
栗原　誠
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/JP2017/001398 priority Critical patent/WO2018134888A1/fr
Priority to JP2018562761A priority patent/JP6721060B2/ja
Publication of WO2018134888A1 publication Critical patent/WO2018134888A1/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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
    • 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
    • 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
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
    • 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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/30—Condensation of water from cooled air

Definitions

  • This invention relates to an air conditioner, and more particularly to control of a drain pump used in the air conditioner.
  • drain water condensed water
  • An air conditioner indoor unit equipped with a drain pump device has an advantage that drain water can be discharged even if the installation location is selected near the center of the air-conditioned space or at a location away from the wall surface.
  • the drain pump since the drain pump is driven, there is a demerit that power consumption increases and energy saving performance deteriorates.
  • the drain pump is operated at a high output when the rotational speed of the indoor blower exceeds a predetermined rotational speed, and the drain pump is operated at a low output when the rotational speed of the indoor blower is lower than the predetermined rotational speed.
  • a technique for reducing the power consumption while maintaining the required drainage capacity of the drain pump is disclosed (for example, see Patent Document 1).
  • the cooling capacity is estimated based on the rotational speed of the blower of the indoor unit, and when the capacity is low, the drain pump is set to a low output, or the pump is stopped when the cooling thermostat is off.
  • the amount of drain water generated is estimated only by the rotation speed of the indoor blower and the pump output is varied, or simply stopping the pump while the thermo is off, it will lead to insufficient drain water discharge. There was a problem that water overflowed beyond the allowable storage amount and dropped into the room.
  • the output of the drain pump is lowered or stopped, the drain water flows backward from the discharge side, so that there is a problem that abnormal noise is generated.
  • the present invention has been made to solve the above-described problems, and provides an air conditioner that can reduce the power consumption of a drain pump without causing drain water shortage or overflow during cooling operation. For the purpose.
  • An air conditioner includes an indoor heat exchanger disposed in a refrigerant circuit in which a refrigerant is circulated by a compressor, a drain pan that stores drain water generated by the indoor heat exchanger in a cooling operation, A drain pump for draining drain water from the drain pan, a water level detection means for detecting the stored water level of the drain water provided in the drain pan, and a control means for controlling the operation of the drain pump. It has a first mode in which the drain pump is stopped when the thermo-off or the compressor is stopped, and a second mode in which the drain pump is operated in preference to the first mode.
  • the air conditioner of the present invention has an effect that power consumption can be reduced while maintaining high reliability without overflowing drain water.
  • FIG. 1 to 4 illustrate an air conditioner according to Embodiment 1 of the present invention.
  • FIG. 1 is a refrigerant circuit configuration diagram schematically showing a configuration of a refrigerant circuit
  • FIG. 2 is an indoor unit thereof.
  • FIG. 3 is a flowchart showing a control flow for explaining the air conditioner
  • FIG. 4 is a characteristic diagram showing control operation characteristics according to this control flow.
  • an air conditioner 100 includes an outdoor unit 101 and an indoor unit 102 that are connected to each other by a refrigerant pipe.
  • the outdoor unit 101 heat is exchanged between the compressor 1 capable of changing the operating frequency (compressor operating frequency) for compressing the refrigerant, the four-way valve 2 for changing the flow direction of the refrigerant, and the outdoor air.
  • An outdoor heat exchanger 3, an outdoor fan 4 that supplies outdoor air toward the outdoor heat exchanger 3, and an expansion valve that expands the refrigerant are provided.
  • the indoor unit 102 is provided with an indoor heat exchanger 6 that exchanges heat with indoor air, and an indoor blower 7 that supplies indoor air toward the indoor heat exchanger 6.
  • the refrigerant is, for example, a single HFO refrigerant such as HFO-1234yf, or a mixed refrigerant of an HFO refrigerant and an HFC refrigerant such as R32.
  • the refrigerant discharged from the compressor 1 flows in the order of the four-way valve 2, the outdoor heat exchanger 3, the expansion valve 5, and the indoor heat exchanger 6, and again.
  • a refrigerant circuit that returns to the compressor 1 via the four-way valve 2 is formed, and a refrigeration cycle is executed.
  • the refrigerant discharged from the compressor 1 flows in the order of the four-way valve 2, the indoor heat exchanger 6, the expansion valve 5, and the outdoor heat exchanger 3, and again passes through the four-way valve 2.
  • a refrigerant circuit returning to the compressor 1 is formed, and the refrigeration cycle is executed.
  • FIG. 2 shows an indoor unit of a ceiling-embedded air conditioner as an air conditioner.
  • This air conditioner indoor unit includes an indoor unit body having a box-shaped casing having a substantially rectangular parallelepiped shape and a decorative panel 14, and a suction grille 15 to which an air filter 16 is attached opens at the center of the decorative panel 14. There is an air outlet around the suction grill 15 of the decorative panel 14. Then, four bolts from the building are set vertically downward toward the air conditioner body, and these four bolts are respectively fixed to the suspension fittings of the air conditioner body.
  • a blower motor 8, an indoor blower (turbo fan) 7, a bell mouth 9, a drain pump 12, an indoor heat exchanger 6, and a drain pan 11 are accommodated.
  • the blower motor 8 is supported on the top plate of the casing of the indoor unit, and the indoor blower 7 is fixed to the lower end of the rotational drive shaft.
  • the bell mouth 9 is disposed on the lower side of the indoor blower 7 and has a circular opening at each of an upper end and a lower end, and is formed in a cylindrical shape whose opening area increases toward the decorative panel 14.
  • the indoor heat exchanger 6 is bent and arranged in a polygonal shape (for example, a substantially square shape) so as to surround the periphery of the indoor blower 7.
  • the indoor heat exchanger 6 is installed on the upper surface of the drain pan 11 so as to stand upward, and the air blown to the side from the indoor blower 7 passes through the indoor heat exchanger 6. Then, the condensed water (drain water) generated in the indoor heat exchanger 6 is received by the drain pan 11, and the drain water is collected in the deepest drain reservoir of the drain pan 11. Then, the suction port of the drain pump 12 faces this drain reservoir, and drain water collected in the drain reservoir through the drain pump 11 is discharged to the outside of the indoor unit main body.
  • the drain pan 11 is provided with a drain pump 12 and a water level detection sensor 13 for detecting the drain amount (water level) of the drain water collected in the drain pan.
  • the water level detection sensor 13 activates (on state) the float switch when the water level height is equal to or higher than a predetermined amount indicating a drain water level abnormality, and transmits a signal indicating that the water level is on to the indoor control device. And the microcomputer of the indoor control apparatus which received the signal judges as a water level abnormality.
  • This air conditioner is equipped with compressor drive control for cooling and heating operations based on information on the intake air temperature detected by the intake air temperature sensor installed at the intake port of the indoor unit and the air conditioning set temperature set by the user using the remote control. Execute. At that time, in the case of cooling operation, the indoor control device controls the drain pump with the output of the drain pump set in advance according to the operation status such as the operation frequency of the compressor and the rotation speed of the indoor blower.
  • the indoor control device performs operation control in the first mode in which the operation of the drain pump is stopped when the thermo-off or the compressor is stopped.
  • the indoor control device Prior to the first mode operation control, the second mode operation control for continuing the operation drive without stopping the drain pump is performed.
  • the drain pan may be contaminated or the drain pump itself may be poorly driven.
  • the control device performs the second mode operation control in which the operation drive is continued without stopping the drain pump in preference to the above-described first mode operation control at the time of thermo-off in the cooling operation or when the operation of the compressor is stopped. Do. Thereby, it has the effect of reducing power consumption, without making drain water overflow.
  • FIG. 3 is a control flow chart for explaining the control operation related to the drain pump operation when the air conditioner is in the cooling operation when the thermo is off or when the compressor is stopped. The operation of the drain pump drive control will be described below with reference to FIG.
  • step S1 when the air conditioner starts the cooling operation in step S1, the drain pump operates at a predetermined rotation speed set in advance. Thereafter, in step S2, it is determined whether the intake air temperature has fallen below the air conditioning set temperature and the thermo-off state has been reached, or the operation of the compressor has been stopped in response to an operation stop command by a remote control operation by the user. If the compressor is not stopped, the process proceeds to step S6, and the drain pump is continuously operated. On the other hand, if it is determined that the thermo-off / compressor is stopped (YES), the process proceeds to the next step S3 to determine whether the water level of the drain water is lower than the specified value or whether the water level has not been higher than the specified value in the past. I do. If YES, the process proceeds to step S4 to perform operation control in the first mode for stopping the operation of the drain pump. If NO, the process proceeds to step S5, and the operation drive is continued without stopping the drain pump. Two-mode operation control is performed.
  • the indoor control device determines that the thermo-off / compressor is stopped, it is determined whether the water level of the drain water is lower than the specified value or whether the water level has not exceeded the specified value in the past.
  • the drain water can be appropriately discharged outside without causing the drain water to overflow, and further has an effect of reducing the power consumption required for driving the pump.
  • the indoor control device uses a heat exchanger temperature sensor provided in the refrigerant pipe of the heat exchanger to detect the temperature of the refrigerant flowing through the indoor heat exchanger, so that the circulating refrigerant during operation and after the compressor is stopped Detect the temperature state of Then, the heat exchanger temperature detected by the heat exchanger temperature sensor is compared with the intake air temperature detected by the intake air temperature sensor, and if the heat exchanger temperature is lower than the intake air temperature, the compressor Continue to operate the drain pump even if is stopped.
  • the drain water generated there can be appropriately discharged to the outside of the indoor unit main body by operating the drain pump.
  • the air conditioner further includes an indoor suction humidity sensor that detects the humidity of the air-conditioned air sucked from the indoor space into the suction port of the indoor unit together with the indoor suction temperature sensor.
  • the indoor suction humidity detected by the indoor suction humidity sensor is a high humidity condition that is higher than a predetermined threshold
  • the indoor control device continues to operate the drain pump even if the thermo-off condition is satisfied and the compressor operation is stopped.
  • the operation control in the second mode is performed.
  • even a larger amount of drain water is collected in the drain pan than when the air-conditioning operation is performed under normal air conditions, it can be discharged to the outside of the indoor unit main body without overflowing from there.
  • the drain pump rotation speed is lowered and stopped in a stepwise manner, or the drain pump speed is controlled continuously until the drain pump is stopped gradually.
  • the momentum of the reverse flow of the drain water that has been lifted to the discharge start pipe by the pump can be suppressed, and the occurrence of abnormal noise can be reduced.
  • FIG. 4 is a control characteristic diagram of the drain pump drive at the time of thermo-off during the cooling operation or when the compressor is stopped.
  • the vertical axis represents the drain pump rotation speed [rpm] and the horizontal axis represents time [t]. .
  • (A) shows the case where the drain pump drive operation is continued even after the time of the dotted line indicating the “thermo off / compressor stop” time, and (b) the drain pump operation at the time of the “thermo off / compressor stop”. It shows the case of stopping.
  • (c) shows the operation control in which the rotation speed of the drain pump is decreased stepwise from the “thermo-off / compressor stop” time and it takes time to stop.
  • drain water is discharged from the indoor unit by operating at the drain pump speed N4.
  • the drain pump is rotated up to the speed N2.
  • the operation control is performed by lowering and operating in that state for a predetermined time, and then further lowering the rotational speed of the drain pump to zero stop.
  • the number of stages of decreasing the number of revolutions of the drain pump may be two or more, and can be set according to the amount of drain water generated from the indoor heat exchanger and the drain pump discharge capacity.
  • (d) shows the operation of performing the operation control over a period of time until the stop by gradually decreasing the rotation speed of the drain pump from the “thermo-off / compressor stop” time point.
  • the drain pump is operated at the rotational speed N4, and when the thermo-off / compressor is stopped, the rotational speed is continuously reduced from N4 to zero at the stop.
  • the braking time from when the thermo-off / compressor stops to when the drain pump rotation speed is zero can be set according to the amount of drain water generated from the indoor heat exchanger and the drain pump discharge capacity.
  • the drain pump is not stopped immediately when the thermo-off / compressor is stopped, but the operation speed of the drain pump is gradually reduced in a stepwise or continuous manner, thereby increasing the back flow momentum of the drain water. It is possible to suppress the occurrence of abnormal noise from the indoor unit side.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

L'invention concerne un climatiseur comprenant un échangeur de chaleur intérieur qui est disposé dans un circuit de fluide frigorigène par lequel un fluide frigorigène est mis en circulation au moyen d'un compresseur, un bac de vidange qui collecte l'eau de vidange générée par l'échangeur de chaleur intérieur pendant l'opération de refroidissement, une pompe de vidange qui évacue l'eau de vidange du bac de vidange, un moyen de détection de niveau d'eau qui est disposé dans le bac de vidange et qui est destiné à détecter le niveau d'eau de vidange accumulée et un moyen de commande pour commander le fonctionnement de la pompe de vidange. Le moyen de commande a un premier mode dans lequel la pompe de vidange est arrêtée lorsque le thermostat est éteint pendant l'opération de refroidissement ou lorsque le fonctionnement de compresseur est arrêté et un second mode qui a une priorité sur le premier mode et dans lequel l'opération de pompe de vidange est effectuée.
PCT/JP2017/001398 2017-01-17 2017-01-17 Climatiseur WO2018134888A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2017/001398 WO2018134888A1 (fr) 2017-01-17 2017-01-17 Climatiseur
JP2018562761A JP6721060B2 (ja) 2017-01-17 2017-01-17 空気調和機

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/001398 WO2018134888A1 (fr) 2017-01-17 2017-01-17 Climatiseur

Publications (1)

Publication Number Publication Date
WO2018134888A1 true WO2018134888A1 (fr) 2018-07-26

Family

ID=62908844

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/001398 WO2018134888A1 (fr) 2017-01-17 2017-01-17 Climatiseur

Country Status (2)

Country Link
JP (1) JP6721060B2 (fr)
WO (1) WO2018134888A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109405176A (zh) * 2018-11-02 2019-03-01 广东美的暖通设备有限公司 空调器控制方法、控制装置和空调器
CN114923218A (zh) * 2022-03-29 2022-08-19 青岛海信日立空调系统有限公司 空调器
JP7520244B1 (ja) 2023-04-17 2024-07-22 三菱電機株式会社 空気調和機

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022234859A1 (fr) * 2021-05-07 2022-11-10 ダイキン工業株式会社 Unité intérieure et dispositif de climatisation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08121807A (ja) * 1994-10-24 1996-05-17 Hitachi Ltd 空気調和機
JPH09126529A (ja) * 1995-11-02 1997-05-16 Matsushita Refrig Co Ltd 空気調和機のドレンポンプ制御装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04158150A (ja) * 1990-10-19 1992-06-01 Matsushita Electric Ind Co Ltd 空気調和機のドレンポンプ制御装置
JP3459467B2 (ja) * 1994-06-13 2003-10-20 三洋電機株式会社 ドレン水処理装置およびこの装置を備えた空気調和装置
JPH09243106A (ja) * 1996-03-06 1997-09-16 Toshiba Ave Corp 空気調和機のドレン水排出装置
JP4164320B2 (ja) * 2002-08-30 2008-10-15 東芝キヤリア株式会社 空気調和装置
JP2009204257A (ja) * 2008-02-28 2009-09-10 Mitsubishi Heavy Ind Ltd 空気調和機のドレン処理装置
JP2018004131A (ja) * 2016-06-30 2018-01-11 株式会社富士通ゼネラル 空気調和機

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08121807A (ja) * 1994-10-24 1996-05-17 Hitachi Ltd 空気調和機
JPH09126529A (ja) * 1995-11-02 1997-05-16 Matsushita Refrig Co Ltd 空気調和機のドレンポンプ制御装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109405176A (zh) * 2018-11-02 2019-03-01 广东美的暖通设备有限公司 空调器控制方法、控制装置和空调器
CN114923218A (zh) * 2022-03-29 2022-08-19 青岛海信日立空调系统有限公司 空调器
CN114923218B (zh) * 2022-03-29 2023-08-18 青岛海信日立空调系统有限公司 空调器
JP7520244B1 (ja) 2023-04-17 2024-07-22 三菱電機株式会社 空気調和機
WO2024218818A1 (fr) * 2023-04-17 2024-10-24 三菱電機株式会社 Climatiseur

Also Published As

Publication number Publication date
JP6721060B2 (ja) 2020-07-08
JPWO2018134888A1 (ja) 2019-04-25

Similar Documents

Publication Publication Date Title
CN109855267B (zh) 空调的自动扫风控制方法和空调
JP5295189B2 (ja) 空気調和機
KR101070186B1 (ko) 냉매 흐름량 변화에 따른 송풍기 풍량 자동 제어 장치를 구비한 직접팽창방식 공조기
WO2018134888A1 (fr) Climatiseur
JP2018004131A (ja) 空気調和機
WO2019163346A1 (fr) Climatiseur
JP2014190600A (ja) 空気調和装置
JP5071063B2 (ja) 空気調和機
JP2014092350A (ja) 空気調和機
JP2009204257A (ja) 空気調和機のドレン処理装置
WO2019146355A1 (fr) Appareil de climatisation
JP4619983B2 (ja) 空気調和機
WO2019146377A1 (fr) Appareil de climatisation
JP6578695B2 (ja) 空気調和装置
JP2018146171A (ja) 空調システム
JP6760314B2 (ja) 空気調和装置
JP2017096529A (ja) 制御装置、それを備えた空気調和システム、及び制御方法、並びに制御プログラム
JP5950897B2 (ja) 空気調和機
KR101029988B1 (ko) 직접팽창방식 공조기의 냉매 흐름량 변화에 따른 송풍기 풍량 자동 제어 방법
JP6698221B1 (ja) 空気調和機
JP6896041B2 (ja) 空気調和機
JP6562139B2 (ja) 冷凍装置
JP2008116136A (ja) 空気調和装置
CN117396705B (zh) 空调机
JP4164320B2 (ja) 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: 17892156

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2018562761

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17892156

Country of ref document: EP

Kind code of ref document: A1

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