WO2015192629A1 - Compresseur à capacité variable et son procédé de commande, unité à capacité variable et climatiseur - Google Patents

Compresseur à capacité variable et son procédé de commande, unité à capacité variable et climatiseur Download PDF

Info

Publication number
WO2015192629A1
WO2015192629A1 PCT/CN2014/095096 CN2014095096W WO2015192629A1 WO 2015192629 A1 WO2015192629 A1 WO 2015192629A1 CN 2014095096 W CN2014095096 W CN 2014095096W WO 2015192629 A1 WO2015192629 A1 WO 2015192629A1
Authority
WO
WIPO (PCT)
Prior art keywords
compressor
port
compressor body
heater
valve
Prior art date
Application number
PCT/CN2014/095096
Other languages
English (en)
Chinese (zh)
Inventor
倪毅
刘群波
黄春
宋培刚
刘合心
陈泽彬
Original Assignee
珠海格力电器股份有限公司
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 珠海格力电器股份有限公司 filed Critical 珠海格力电器股份有限公司
Publication of WO2015192629A1 publication Critical patent/WO2015192629A1/fr

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/06—Cooling; Heating; Prevention of freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/04—Heating; Cooling; Heat insulation

Definitions

  • the invention relates to the technical field of compressors, in particular to a variable capacity compressor and a control method thereof, a variable capacity unit and an air conditioner.
  • Variable capacity compressors are currently widely used as compressors. Since the output capacity of the variable displacement compressor can be adjusted as needed, it has been applied in many fields.
  • variable-capacity compressor has such a problem in operation that when the compressor is operated in a single cylinder, the reversing valve is opened and the pressure relief valve is closed. Due to long-term operation, there is liquid refrigerant accumulation based on natural condensation for the line between the reversing valve and the first suction port of the compressor body. When the compressor body is switched from a single cylinder to a double cylinder, the reversing valve is closed, the pressure relief valve is opened, and the liquid refrigerant may be directly sucked by the compressor, which causes greater damage to the compressor.
  • Embodiments of the present invention provide a variable capacity compressor, a control method thereof, a variable capacity unit, and an air conditioner.
  • a variable capacity compressor By heating the pipeline between the reversing valve and the first suction port of the compressor body, the accumulated liquid refrigerant is heated to improve the reliability of the variable displacement compressor.
  • a variable displacement compressor includes a compressor body, a reversing valve, and a heater, wherein a first port of the reversing valve communicates with a first suction port of the compressor body through a pipe, The second port of the reversing valve is in communication with the exhaust port of the compressor body, wherein:
  • the heater is placed on the pipeline for heating the liquid refrigerant stored in the pipeline.
  • the heater heats the tubing when the compressor body is in the single cylinder operating mode.
  • the heater stops heating the line when the compressor body is switched to the two-cylinder operating mode.
  • the compressor further includes a pressure relief valve and a gas-liquid separator, wherein:
  • the first port of the pressure relief valve is in communication with the first port of the gas-liquid separator
  • the second port of the pressure relief valve is in communication with the first suction port of the compressor body
  • the second port of the gas-liquid separator and the compressor body The second suction port is connected
  • the third port of the gas-liquid separator is in communication with the first suction port of the compressor body.
  • the compressor further includes a filter, wherein:
  • a second port of the pressure relief valve is in communication with the first port of the filter through a capillary, and a second port of the filter is in communication with the first suction port of the compressor body.
  • the compressor further includes a one-way valve, wherein:
  • the one-way valve is disposed between the third port of the gas-liquid separator and the first suction port of the compressor body, and the conduction direction of the one-way valve is from the third port of the gas-liquid separator to the first of the compressor body Intake port.
  • the heater heats the line when the compressor body is switched to the single cylinder mode of operation, wherein the compressor body switches to the single cylinder mode of operation when the reversing valve is open and the pressure relief valve is closed.
  • the heater stops heating the line when the compressor body is switched to the two-cylinder operating mode, wherein the compressor body switches to the two-cylinder operating mode when the diverter valve is closed and the pressure relief valve is open.
  • the heater is an electric heating belt.
  • the compressor further includes a trigger that controls the switching state of the reversing valve and the relief valve, and controls the energized state of the heater according to the switching state of the reversing valve and the relief valve.
  • variable capacity unit comprising: a variable displacement compressor according to any of the above embodiments.
  • an air conditioner comprising: a variable displacement compressor according to any of the above embodiments.
  • variable volume compressor control method comprising:
  • the liquid refrigerant stored in the line is heated by a heater disposed in a line between the first port of the reversing valve and the first suction port of the compressor body.
  • the heater heats the liquid refrigerant stored in the line after the compressor body is switched to the single cylinder mode of operation.
  • the step of heating the liquid refrigerant stored in the pipeline by the heater comprises:
  • the pressure relief valve is closed after a predetermined time interval
  • the heater heats the liquid refrigerant stored in the pipeline.
  • the predetermined time interval is less than 15 seconds.
  • the heater stops heating the liquid refrigerant stored in the line when the compressor body is switched to the two-cylinder operating mode.
  • the step of the heater stopping the heating of the liquid refrigerant stored in the pipeline when the compressor body is switched to the two-cylinder operation mode comprises:
  • the heater stops heating the liquid refrigerant stored in the pipeline.
  • the invention heats the liquid refrigerant stored in the pipeline by a heater disposed on the pipeline between the reversing valve and the first suction port of the compressor body, thereby effectively improving the reliability of the variable displacement compressor.
  • Figure 1 is a schematic view of one embodiment of a variable displacement compressor of the present invention.
  • FIG. 2 is a schematic view of another embodiment of a variable displacement compressor of the present invention.
  • FIG. 3 is a schematic view of still another embodiment of a variable displacement compressor of the present invention.
  • FIG. 4 is a schematic view of an embodiment of a variable capacity unit of the present invention.
  • Fig. 5 is a schematic view showing an embodiment of a control method of a variable displacement compressor according to the present invention.
  • Fig. 6 is a schematic view showing another embodiment of the control method of the variable displacement compressor of the present invention.
  • Fig. 7 is a schematic view showing still another embodiment of the control method of the variable displacement compressor of the present invention.
  • FIG. 1 is a schematic view of one embodiment of a variable displacement compressor of the present invention.
  • the variable capacity compressor 1 includes a compressor body 11, a reversing valve 12, and a heater 17, wherein the compressor body 11 includes a first intake port 111 and an exhaust port 113, and the reversing valve 12 includes A port 121 and a second port 122, the first port 121 of the reversing valve 12 communicates with the first suction port 111 of the compressor body 11 through the pipe 18, and the second port 122 of the reversing valve 12 and the compressor body 11
  • the exhaust port 113 is in communication. among them:
  • a heater 17 is provided on the line 18 for heating the liquid refrigerant stored in the line 18.
  • the liquid refrigerant stored in the pipeline is heated by a heater provided on the pipeline between the reversing valve and the first suction port of the compressor body, thereby heating Effectively reduce the influence of accumulated liquid refrigerant on the variable capacity compressor and improve the reliability of the variable capacity compressor.
  • the heater 17 can be an electric heating belt, and when the electric heating belt is energized, the electric heating is applied.
  • the tropical begins to heat up.
  • the electric heating belt loses power, the electric heating belt stops heating.
  • other heating elements can also be employed for heating.
  • the heater 17 can heat the liquid refrigerant stored in the line 18 to a gaseous or superheated state. Since the refrigerant in the gaseous or superheated state enters the compressor body 11 without affecting the compressor body 11, the reliability of the variable displacement compressor can be further improved.
  • the heater 17 is in the line 18 when the compressor body 11 is in the single cylinder operating mode. heating.
  • the heater 17 stops heating when the compressor body 11 is switched to the two-cylinder operating mode.
  • variable capacity compressor further includes a pressure relief valve 13 and a gas-liquid separator 14. among them:
  • the first port 131 of the pressure relief valve 13 is in communication with the first port 141 of the gas-liquid separator 14, and the second port 132 of the pressure relief valve 13 is in communication with the first suction port 111 of the compressor body 11, the gas-liquid separator 14
  • the second port 142 is in communication with the second intake port 112 of the compressor body 11, and the third port 143 of the gas-liquid separator 14 is in communication with the first intake port 111 of the compressor body 11.
  • variable capacity compressor further includes a filter 15 as compared to the embodiment shown in FIG. among them:
  • the second port 132 of the pressure relief valve 13 communicates with the first port 151 of the filter 15 through a capillary, and the second port 152 of the filter 15 communicates with the first suction port 111 of the compressor body 11.
  • the pressure drop can be prevented from being too fast, and by setting the filter, the capillary can be prevented from being blocked.
  • variable capacity compressor further includes a one-way valve 16 disposed between the third port 143 of the gas-liquid separator 14 and the first suction port 111 of the compressor body 11.
  • the conduction direction of the one-way valve is from the third port of the gas-liquid separator to the first suction port of the compressor body.
  • the reversing valve 12 is opened, the pressure relief valve 13 is closed, and the compressor body 11 is switched to the single cylinder operation mode.
  • the heater 17 then begins to heat the line 18.
  • the heater 17 heats the line 18 such that the liquid refrigerant stored in the line 18 changes to a gaseous or superheated state.
  • the diverter valve 12 is closed, the pressure relief valve 13 is opened, and the compressor body 11 is switched to the two-cylinder operation mode, at which time the heater 17 stops heating the line 18. For example, if the heater 17 loses power, the heating of the line 18 is stopped.
  • FIG 3 is a schematic view of another embodiment of a variable displacement compressor of the present invention.
  • a variable displacement compressor is also provided with a trigger 19.
  • the trigger 19 controls the switching state of the switching valve 12 and the pressure relief valve 13, and controls the power-on state of the heater 17 in accordance with the switching state of the switching valve 12 and the pressure relief valve 13.
  • the trigger 19 triggers the switching valve 12 and the pressure relief valve 13 to open the switching valve 12 and the pressure relief valve 13 for a predetermined time. The interval closes the pressure relief valve 13 so that the compressor body 11 is switched to the single cylinder operation mode. At this time, the trigger 19 triggers the heater 17 to energize the heater 17, thereby heating the line 18.
  • the trigger 19 triggers the reversing valve 12 and the pressure relief valve 13 to close the reversing valve 12, and the pressure relief valve 13 is opened, so that the compressor body 11 Switch to the two-cylinder operating mode. At this time, the trigger 19 triggers the heater 17 to de-energize the heater 17, thereby stopping the heating of the line 18.
  • the diverter valve 12 can be a reversing solenoid valve or other device capable of performing the corresponding function.
  • the pressure relief valve 13 can be a pressure relief solenoid valve or other device that performs the corresponding function.
  • variable capacity unit 4 is a schematic view of an embodiment of a variable capacity unit of the present invention, wherein the variable capacity unit includes a variable displacement compressor according to any of the embodiments of FIGS. 1 to 3. This will be specifically described below.
  • the variable capacity unit includes a compressor 1, a four-way switching valve 2, an indoor heat exchanger 3, an outdoor heat exchanger 4, and a throttle mechanism 5.
  • the compressor 1 includes a compressor body 11, a reversing valve 12, a pressure relief valve 13, a gas-liquid separator 14, a filter 15, and a check valve 16.
  • the D pipe of the four-way switching valve 2 communicates with the exhaust port 113 of the compressor body 11 through a pipe, and the S pipe of the four-way switching valve 2 communicates with the first port 141 of the gas-liquid separator 14 through a pipe, and the four-way exchange Passing the E to the valve 2 through the pipe and the indoor heat exchanger 3
  • One port 31 is in communication
  • the C nozzle of the four-way switching valve 2 is in communication with the first port 41 of the outdoor heat exchanger 4 through a pipe.
  • the second port 32 of the indoor heat exchanger 3 is in communication with the first port 51 of the throttle mechanism 5 via a conduit
  • the second port 42 of the outdoor heat exchanger 4 is in communication with the second port 52 of the throttle mechanism 5 via a conduit.
  • the reversing valve 12 is respectively communicated with the exhaust port 113 of the compressor body 11 and the first intake port 111 of the compressor body 11 through a pipe; the pressure relief valve 13 passes through the pipe and the gas-liquid separator 14, respectively.
  • the first port 141 and the first suction port 111 of the compressor body 11 are in communication, and a filter 15 is further disposed on the pipe communicating with the first suction port 111 of the compressor body 11 at the pressure relief valve 13 and the filter. 15 is connected to the pressure relief valve 13 through a capillary tube; the second suction port 112 of the compressor body 11 is connected to the second port 142 of the gas-liquid separator 14 through a pipe; the third port 143 of the gas-liquid separator 14 is piped and compressed.
  • the first suction port 111 of the machine body 11 is in communication, and a check valve 16 is further disposed on the pipe.
  • the conduction direction of the check valve 16 is from the third port 143 of the gas-liquid separator 14 to the compressor body 11 The first suction port 111.
  • the compressor body 11 Switch to single cylinder mode.
  • the reversing valve 12 is closed, the pressure relief valve 13 is opened, and the one-way valve 16 is turned on, the first suction port 111 of the compressor body 11 is electrically connected to the second suction port 112, and the compressor body 11 is switched at this time. To the two-cylinder mode.
  • the heater 17 is disposed on the pipe 18 between the reversing valve 12 and the first intake port 111 of the compressor body 11, the liquid refrigerant stored in the pipe 18 can be heated, thereby effectively reducing the pipe 18
  • the influence of the liquid refrigerant stored in the variable-capacity compressor on the variable-capacity compressor improves the reliability of the variable-capacity compressor.
  • the compressor body can be two parallel rotor compressors.
  • variable displacement compressor according to any one of the embodiments of FIG. 1 to FIG. 3 can be applied to an air conditioner, thereby effectively improving the performance of the air conditioner.
  • variable volume compressor control method comprising:
  • the liquid refrigerant stored in the piping is heated by a heater provided on a line between the first port of the switching valve 12 and the first suction port 111 of the compressor body 11.
  • the heater 17 can be an electric heating belt, and when the electric heating belt is energized, the electric heating is applied.
  • the tropical begins to heat up.
  • the electric heating belt loses power, the electric heating belt stops heating.
  • other heating elements can also be employed for heating.
  • the invention heats the liquid refrigerant stored in the pipeline by a heater disposed on the pipeline between the reversing valve and the first suction port of the compressor body, thereby effectively improving the reliability of the variable displacement compressor.
  • the heater 17 can heat the liquid refrigerant stored in the line 18 to a gaseous or superheated state. Since the refrigerant in the overheated state enters the compressor body 11 without affecting the compressor body 11, the performance of the system can be further improved.
  • the pipeline 18 may be in the presence of a liquid refrigerant, and the corresponding processing steps are as shown in FIG.
  • step 501 the compressor body 11 is switched to the single cylinder operation mode.
  • step 502 the heater 17 heats the liquid refrigerant stored in the line 18.
  • the heater 17 stops heating the liquid refrigerant stored in the line 18 when the compressor body 11 is switched to the two-cylinder operating mode.
  • Fig. 6 is a schematic view showing an embodiment of a control method of a variable displacement compressor according to the present invention. As shown in FIG. 6, when it is necessary to switch the compressor body 11 to the single cylinder operation mode, the following steps are performed:
  • step 601 the reversing valve 12 and the pressure relief valve 13 are opened.
  • Step 602 the pressure relief valve 13 is closed after a predetermined time interval.
  • the predetermined time interval is less than 15 seconds.
  • the compressor body 11 is switched to the single cylinder operation mode.
  • step 603 the heater 17 heats the liquid refrigerant stored in the line 18.
  • the heater 17 heats the liquid refrigerant stored in the line 18 to a gaseous or superheated state.
  • Fig. 7 is a schematic view showing another embodiment of the control method of the variable displacement compressor of the present invention. When it is necessary to switch the compressor body 11 to the two-cylinder operation mode, the following steps are performed:
  • step 701 the reversing valve 12 is closed.
  • step 702 the pressure relief valve 13 is opened.
  • the compressor body 11 is switched to the two-cylinder operation mode.
  • step 703 the heater 17 stops heating the liquid refrigerant stored in the line 18.
  • the heater can be closed in synchronism with the diverter valve 12 or in synchronism with the pressure relief valve 13.
  • the invention heats the liquid refrigerant stored in the pipeline through a heater disposed on the pipeline between the reversing valve and the first suction port of the compressor body, thereby eliminating the need to modify the existing unit. It effectively reduces the influence of the accumulated liquid refrigerant on the variable capacity compressor and improves the reliability of the variable capacity compressor.
  • the storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

L'invention porte sur un compresseur à capacité variable sur son procédé de commande, sur une unité à capacité variable et sur un climatiseur. Le compresseur à capacité variable comprend un corps de compresseur (11), une vanne d'inversion (12) et un élément chauffant (17). La première ouverture d'extrémité (121) de la vanne d'inversion (12) est en communication avec la première ouverture d'aspiration d'air (111) du corps de compresseur (11) par l'intermédiaire d'une conduite (18) ; la seconde ouverture d'extrémité (122) de la vanne d'inversion (12) est en communication avec l'ouverture d'évacuation d'air (113) du corps de compresseur (11) ; et l'élément chauffant (17) est disposé sur la conduite (18) pour chauffer un agent de refroidissement liquide stocké dans la conduite (18). L'agent de refroidissement liquide stocké est chauffé par chauffage de la conduite (18) entre la vanne d'inversion (12) et la première ouverture d'aspiration d'air (111) du corps de compresseur (11), de telle sorte que la fiabilité du compresseur à capacité variable est améliorée. L'invention porte également sur une unité à capacité variable et sur un climatiseur comprenant le compresseur à capacité variable, et sur son procédé de commande.
PCT/CN2014/095096 2014-06-20 2014-12-26 Compresseur à capacité variable et son procédé de commande, unité à capacité variable et climatiseur WO2015192629A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410279779.5A CN104019013B (zh) 2014-06-20 2014-06-20 变容压缩机及其控制方法、变容机组和空调
CN201410279779.5 2014-06-20

Publications (1)

Publication Number Publication Date
WO2015192629A1 true WO2015192629A1 (fr) 2015-12-23

Family

ID=51435941

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2014/095096 WO2015192629A1 (fr) 2014-06-20 2014-12-26 Compresseur à capacité variable et son procédé de commande, unité à capacité variable et climatiseur

Country Status (2)

Country Link
CN (1) CN104019013B (fr)
WO (1) WO2015192629A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104019013B (zh) * 2014-06-20 2016-04-27 珠海格力电器股份有限公司 变容压缩机及其控制方法、变容机组和空调
CN107917078B (zh) * 2017-11-08 2024-03-29 珠海格力节能环保制冷技术研究中心有限公司 一种变容控制结构、压缩机及其变容控制方法
CN110925178B (zh) * 2019-11-07 2020-11-13 珠海格力电器股份有限公司 变容压缩机及其控制方法、装置、控制器及热泵系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59165876A (ja) * 1984-03-09 1984-09-19 Matsushita Refrig Co 冷凍装置
JPS62197688A (ja) * 1986-02-25 1987-09-01 Sanyo Electric Co Ltd 回転圧縮機
US20070113583A1 (en) * 2005-11-21 2007-05-24 A. Solares High Technology Co., Ltd. Compressor for refrigeratory equipment
CN203516011U (zh) * 2013-10-16 2014-04-02 Tcl空调器(中山)有限公司 压缩机的电加热结构及空调
CN104019013A (zh) * 2014-06-20 2014-09-03 珠海格力电器股份有限公司 变容压缩机及其控制方法、变容机组和空调
CN203925943U (zh) * 2014-06-20 2014-11-05 珠海格力电器股份有限公司 变容压缩机、变容机组和空调

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08177774A (ja) * 1994-12-28 1996-07-12 Matsushita Electric Ind Co Ltd 空気調和機
JP5366895B2 (ja) * 2010-07-02 2013-12-11 カルソニックカンセイ株式会社 電動コンプレッサ装置の制御装置
CN103062015A (zh) * 2011-10-18 2013-04-24 林晖凡 空压机出气增温装置
CN103671030B (zh) * 2012-09-12 2015-11-25 珠海格力电器股份有限公司 压缩机回油系统的控制方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59165876A (ja) * 1984-03-09 1984-09-19 Matsushita Refrig Co 冷凍装置
JPS62197688A (ja) * 1986-02-25 1987-09-01 Sanyo Electric Co Ltd 回転圧縮機
US20070113583A1 (en) * 2005-11-21 2007-05-24 A. Solares High Technology Co., Ltd. Compressor for refrigeratory equipment
CN203516011U (zh) * 2013-10-16 2014-04-02 Tcl空调器(中山)有限公司 压缩机的电加热结构及空调
CN104019013A (zh) * 2014-06-20 2014-09-03 珠海格力电器股份有限公司 变容压缩机及其控制方法、变容机组和空调
CN203925943U (zh) * 2014-06-20 2014-11-05 珠海格力电器股份有限公司 变容压缩机、变容机组和空调

Also Published As

Publication number Publication date
CN104019013B (zh) 2016-04-27
CN104019013A (zh) 2014-09-03

Similar Documents

Publication Publication Date Title
JP6498677B2 (ja) エアコンシステム及びエアコンシステムの制御方法
CN105783145B (zh) 空调机及其控制方法
US10132530B2 (en) Heat recovery variable-frequency multi-split heat pump system and control method thereof
WO2020062606A1 (fr) Système de circulation de fluide frigorigène et son procédé de commande, et dispositif de climatisation
CN204730502U (zh) 一种低温制冷机房空调器
CN109631383B (zh) 一种空调系统及其控制方法
US10753645B2 (en) Refrigeration cycle apparatus
US20150330684A1 (en) Liquid line charge compensator
JP6167769B2 (ja) ヒートポンプ装置
SE0502008L (sv) Luftkonditioneringsanordning
CN109612021A (zh) 一种多联空调系统异响控制方法和多联空调系统
US9909792B2 (en) Refrigeration cycle apparatus
WO2015192629A1 (fr) Compresseur à capacité variable et son procédé de commande, unité à capacité variable et climatiseur
CN104729163A (zh) 空调系统及其化霜控制方法
CN105698307A (zh) 一种可切换运行补气增焓空调系统及切换方法
CN107101405B (zh) 一种压缩循环系统
JP2020506360A (ja) 外気空調システムおよび制御方法
CN105674647B (zh) 变容压缩机系统化霜控制方法
CN104422209B (zh) 空调系统
CN106766479B (zh) 一种可变温的单门冰箱及其控制方法
JP6606053B2 (ja) 空気調和装置
US11193705B2 (en) Refrigeration cycle apparatus
TW201716730A (zh) 熱泵空調系統及其控制方法
CN203857098U (zh) 一种空调泄压装置以及空调器
JP2017150687A (ja) 空気調和装置および空気調和装置の制御方法

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: 14895379

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: 14895379

Country of ref document: EP

Kind code of ref document: A1