CN1800747A - Low-temperature air conditioner heat pump system and method for decreasing temperature regulation fluctuation by employing the same - Google Patents

Low-temperature air conditioner heat pump system and method for decreasing temperature regulation fluctuation by employing the same Download PDF

Info

Publication number
CN1800747A
CN1800747A CN 200510101708 CN200510101708A CN1800747A CN 1800747 A CN1800747 A CN 1800747A CN 200510101708 CN200510101708 CN 200510101708 CN 200510101708 A CN200510101708 A CN 200510101708A CN 1800747 A CN1800747 A CN 1800747A
Authority
CN
China
Prior art keywords
temperature
compressor
evi
heat pump
electric expansion
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CN 200510101708
Other languages
Chinese (zh)
Other versions
CN100366992C (en
Inventor
苏玉海
刘桂平
孙常权
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
Original Assignee
Gree Electric Appliances Inc of Zhuhai
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 Gree Electric Appliances Inc of Zhuhai filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CNB2005101017087A priority Critical patent/CN100366992C/en
Publication of CN1800747A publication Critical patent/CN1800747A/en
Priority to PCT/CN2006/003165 priority patent/WO2007059709A1/en
Application granted granted Critical
Publication of CN100366992C publication Critical patent/CN100366992C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/13—Economisers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/23—Separators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2509—Economiser valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2101—Temperatures in a bypass

Abstract

The invention relates to a low-temperature air-condition heat pump and the method for reducing temperature adjusting vibration which has better warming effect in outdoor low temperature. The invention comprises a liquid storage device, a gas-liquid separator, an auxiliary cooling coil, a cross valve, an outdoor heat exchanger, an outdoor electric expansion valve and a compressor air-feeding system. The invention uses an ejection digital whorl compressor and a compressor air-feeding system, while the outdoor temperature is lower than 0Deg. C, the compressor air-feeding system will work, the EV electromagnetic valve is switched on to feed saturate refrigeration agent in middle pressure to the compressor to realize two-step compression inside the compressor and improve the heating amount and energy-efficiency rate.

Description

Low-temperature air conditioner heat pump system and the method for using this system's reduction adjustment to fluctuate
[technical field]
The present invention relates to the air source heat pump air-conditioner field, relate in particular to a kind of method that under outdoor worst cold case, has the low-temperature air conditioner heat pump system of good heating effect and reduce the adjustment fluctuation.
[background technology]
At present, the normal air source heat pump air-conditioner unit of selling on the market is under the operating mode of outdoor low temperature, the heating capacity decay is very serious, even can't normally start operation, and can only use at transition season at the northern China cold district, can't satisfy basic heat demand in the winter of cold.The traditional central heating mode of northern China is based on coal-fired, combustion gas, and these heating systems all can't reach the requirement of social development at energy-saving and environmental protection, secure context.So need a kind of super low temperature heat pump air-conditioning unit of exploitation to be used for replacing the traditional central heating mode of northern China.
[summary of the invention]
The object of the present invention is to provide a kind of low-temperature air conditioner heat pump system that under outdoor low-temperature working situation, has good heating effect.
Another object of the present invention is to provide a kind of method of using above-mentioned low-temperature air conditioner heat pump system to reduce the adjustment fluctuation.
For achieving the above object, the present invention adopts following technical scheme:
A kind of low-temperature air conditioner heat pump system comprises reservoir, gas-liquid separator, secondary cooling coil, cross valve, off-premises station heat exchanger and off-premises station electric expansion valve and a compressor air compensating system.
Described compressor air compensating system comprises EVI magnetic valve, EVI electric expansion valve, the compressor that is provided with gas supplementing opening, reservoir, and above-mentioned reservoir is connected with EVI magnetic valve, EVI electric expansion valve, and compressor is connected with the EVI magnetic valve.
Described compressor air compensating system also comprises two temperature-sensitive bags.
Described temperature-sensitive bag is a thermistor.
Described reservoir utilizes metal tube to be connected with EVI magnetic valve, EVI electric expansion valve, compressor utilizes metal tube to be connected with the EVI magnetic valve, one of temperature-sensitive bag is placed on compressor is connected usefulness with the EVI magnetic valve metal tube surface, and another is placed on reservoir and is connected with the EVI electric expansion valve and uses the metal tube surface.
A kind of method that reduces the fluctuation of air conditioner heat pump system adjustment comprises the first step: compressor, reservoir, gas-liquid separator, secondary cooling coil, cross valve, off-premises station heat exchanger, off-premises station electric expansion valve, EVI magnetic valve, EVI electric expansion valve and two temperature-sensitive bags of preparing to be provided with gas supplementing opening respectively; Second step: one of temperature-sensitive bag is placed on compressor is connected usefulness with the EVI magnetic valve metal tube surface, and another is placed on reservoir and is connected with the EVI electric expansion valve and uses the metal tube surface; The 3rd step: in system, set a target degree of superheat; The 4th step: the temperature value that two temperature-sensitive bags are measured subtracts each other and draws first temperature gap; The 5th step: the aperture that draws second temperature gap and control the EVI electric expansion valve of subtracting each other of utilizing above-mentioned first temperature gap and the target degree of superheat.
Compared with prior art, low-temperature air conditioner heat pump of the present invention system adopts jet digital scroll compressor and compressor air compensating system, when outdoor environment temperature is lower than zero degree, the compressor air compensating system plays a role in the unit, the EVI magnetic valve is opened the saturated refrigerant gas that replenishes intermediate pressure to compressor, in inner twin-stage compression, heating capacity and the Energy Efficiency Ratio of raising unit under outdoor worst cold case of realizing of compressor.
[description of drawings]
Fig. 1 is the internal structure schematic diagram of low-temperature air conditioner heat pump of the present invention system;
Fig. 2 is low-temperature air conditioner heat pump system of the present invention heating operation pressure-enthalpy chart when the EVI magnetic valve is opened.
[specific embodiment]
See also shown in Figure 1ly, a kind of low-temperature air conditioner heat pump system 1 comprises reservoir 12, gas-liquid separator 15, secondary cooling coil 19, cross valve 16, off-premises station heat exchanger 17 and off-premises station electric expansion valve 18 and a compressor air compensating system.The compressor air compensating system comprises EVI magnetic valve 14, EVI electric expansion valve 13, is provided with the compressor 9 and the reservoir 12 of gas supplementing opening, and above-mentioned reservoir 12 is connected with EVI magnetic valve 14, EVI electric expansion valve 13, and compressor 11 is connected with EVI magnetic valve 14.
For better enforcement the present invention, the compressor air compensating system can also comprise two temperature-sensitive bags 20,21.In the present embodiment, the temperature-sensitive bag is a thermistor, and compressor is jet digital scroll compressor.Reservoir 12 utilizes metal tube to be connected with EVI magnetic valve 14, EVI electric expansion valve 13, compressor 11 utilizes metal tube to be connected with EVI magnetic valve 14, temperature-sensitive bag 20 is placed on compressor 11 is connected usefulness with EVI magnetic valve 14 metal tube surface, and temperature-sensitive bag 21 is placed on reservoir 12 and is connected with EVI electric expansion valve 14 and uses the metal tube surface.
Seeing also shown in Figure 2ly, preferably all is to connect by copper pipe between each parts in the low-temperature air conditioner heat pump system 1.The low-temperature air conditioner heat pump system is when heating operation, compressor 11 is compressed to the refrigerant gas (state point 1) of the low-temp low-pressure that is evaporated from the off-premises station heat exchanger state point 2 of intermediate pressure, gas (state point 9) with the intermediate pressure that sucks from the compressor gas supplementing opening in the scroll plate of compressor 11 is mixed into state point 10, continue then by the gas of compressor boil down to HTHP (state point 3), the refrigerant liquid (state point 4) that the refrigerant gas of HTHP is cooled in indoor set heat exchanger 22 and is condensed into HTHP, highly pressurised liquid is to enter fluid reservoir 12 behind the gas-liquid mixture (state point 5) of intermediate pressure by indoor set electric expansion valve 4 and 13 throttlings of EVI electric expansion valve, the part of refrigerant flash distillation is that the refrigerant gas (state point 9) of intermediate pressure is sucked by the compressor gas supplementing opening in fluid reservoir 12, another part cold-producing mediums are then crossed and coldly are throttled to state point 8 by off-premises station electric expansion valve 18 for the subcooled liquid of intermediate pressure (state point 7) in the fluid reservoir 12, the outer machine heat exchanger 17 of inlet chamber is evaporated to state point 1 and is sucked by the compressor air entry then, finishes one and heats circulation.
A kind of method that reduces the fluctuation of air conditioner heat pump system adjustment comprises the first step: compressor, reservoir, gas-liquid separator, secondary cooling coil, cross valve, off-premises station heat exchanger, off-premises station electric expansion valve, EVI magnetic valve, EVI electric expansion valve and two temperature-sensitive bags of preparing to be provided with gas supplementing opening respectively; Second step: one of temperature-sensitive bag is placed on compressor is connected usefulness with the EVI magnetic valve metal tube surface, and another is placed on reservoir and is connected with the EVI electric expansion valve and uses the metal tube surface; The 3rd step: in system, set a target degree of superheat; The 4th step: the temperature value that two temperature-sensitive bags are measured subtracts each other and draws first temperature gap; The 5th step: the aperture that draws second temperature gap and control the EVI electric expansion valve of subtracting each other of utilizing above-mentioned first temperature gap and the target degree of superheat.
The present invention has introduced and has utilized the compressor air compensating system to reduce air conditioner heat pump system heating capacity decay when low-temperature working, and this can not be considered to the restriction to claim of the present invention.If those skilled in the art has made change unsubstantiality, conspicuous or improvement according to the present invention, all should belong to the scope of claim protection of the present invention.

Claims (9)

1, a kind of low-temperature air conditioner heat pump system comprises reservoir, gas-liquid separator, secondary cooling coil, cross valve, off-premises station heat exchanger and off-premises station electric expansion valve, it is characterized in that: described low-temperature air conditioner heat pump system also comprises a compressor air compensating system.
2, low-temperature air conditioner heat pump according to claim 1 system, it is characterized in that: described compressor air compensating system comprises EVI magnetic valve, EVI electric expansion valve, the compressor that is provided with gas supplementing opening, reservoir, above-mentioned reservoir is connected with EVI magnetic valve, EVI electric expansion valve, and compressor is connected with the EVI magnetic valve.
3, low-temperature air conditioner heat pump according to claim 2 system, it is characterized in that: described compressor air compensating system also comprises two temperature-sensitive bags.
4, low-temperature air conditioner heat pump according to claim 3 system, it is characterized in that: described temperature-sensitive bag is a thermistor.
5, low-temperature air conditioner heat pump according to claim 3 system, it is characterized in that: described reservoir utilizes metal tube to be connected with EVI magnetic valve, EVI electric expansion valve, compressor utilizes metal tube to be connected with the EVI magnetic valve, one of temperature-sensitive bag is placed on compressor is connected usefulness with the EVI magnetic valve metal tube surface, and another is placed on reservoir and is connected with the EVI electric expansion valve and uses the metal tube surface.
6, low-temperature air conditioner heat pump according to claim 1 system, it is characterized in that: described compressor is jet digital scroll compressor.
7, a kind of method that reduces the fluctuation of air conditioner heat pump system adjustment comprises the first step: compressor, reservoir, gas-liquid separator, secondary cooling coil, cross valve, off-premises station heat exchanger, off-premises station electric expansion valve, EVI magnetic valve, EVI electric expansion valve and two temperature-sensitive bags of preparing to be provided with gas supplementing opening respectively; Second step: one of temperature-sensitive bag is placed on compressor is connected usefulness with the EVI magnetic valve metal tube surface, and another is placed on reservoir and is connected with the EVI electric expansion valve and uses the metal tube surface; The 3rd step: in system, set a target degree of superheat; The 4th step: the temperature value that two temperature-sensitive bags are measured subtracts each other and draws first temperature gap; The 5th step: the aperture that draws second temperature gap and control the EVI electric expansion valve of subtracting each other of utilizing above-mentioned first temperature gap and the target degree of superheat.
8, the method for reduction adjustment fluctuation according to claim 7, it is characterized in that: described temperature-sensitive bag is a thermistor.
9, the method for reduction adjustment fluctuation according to claim 7, it is characterized in that: described compressor is jet digital scroll compressor.
CNB2005101017087A 2005-11-25 2005-11-25 Low-temperature air conditioner heat pump system and method for decreasing temperature regulation fluctuation by employing the same Active CN100366992C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CNB2005101017087A CN100366992C (en) 2005-11-25 2005-11-25 Low-temperature air conditioner heat pump system and method for decreasing temperature regulation fluctuation by employing the same
PCT/CN2006/003165 WO2007059709A1 (en) 2005-11-25 2006-11-24 A heat pump system for air conditioning under a low temperature and a using method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2005101017087A CN100366992C (en) 2005-11-25 2005-11-25 Low-temperature air conditioner heat pump system and method for decreasing temperature regulation fluctuation by employing the same

Publications (2)

Publication Number Publication Date
CN1800747A true CN1800747A (en) 2006-07-12
CN100366992C CN100366992C (en) 2008-02-06

Family

ID=36810889

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2005101017087A Active CN100366992C (en) 2005-11-25 2005-11-25 Low-temperature air conditioner heat pump system and method for decreasing temperature regulation fluctuation by employing the same

Country Status (2)

Country Link
CN (1) CN100366992C (en)
WO (1) WO2007059709A1 (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101907326A (en) * 2009-06-04 2010-12-08 乐金电子(天津)电器有限公司 Integral air conditioner
CN101922823A (en) * 2010-09-02 2010-12-22 广州德能热源设备有限公司 Secondary air injection high-efficiency ultralow temperature heat pump unit
CN103940138A (en) * 2014-04-01 2014-07-23 广东美的暖通设备有限公司 Air-cooled heat pump unit
CN104279789A (en) * 2013-07-11 2015-01-14 东莞市微电环保科技有限公司 Triple co-generation air conditioner system
CN104634027A (en) * 2013-11-08 2015-05-20 珠海格力电器股份有限公司 Control method of enthalpy increasing air conditioning system
CN105371514A (en) * 2015-12-10 2016-03-02 珠海格力电器股份有限公司 Compression system with second vapor injection function, air conditioning system and judgment and control method of compression system
CN106322814A (en) * 2016-11-22 2017-01-11 广东美的暖通设备有限公司 Air conditioning system and air conditioner
CN106556175A (en) * 2016-11-22 2017-04-05 广东美的暖通设备有限公司 Air-conditioning system and air-conditioning
CN109654782A (en) * 2018-12-12 2019-04-19 珠海格力电器股份有限公司 The control method and device of electric expansion valve
CN110836417A (en) * 2019-11-18 2020-02-25 珠海格力电器股份有限公司 Air conditioner and air conditioner control method
CN114061056A (en) * 2020-07-28 2022-02-18 广东美的制冷设备有限公司 Air conditioner control method, air conditioner and computer readable storage medium
CN114754430A (en) * 2022-04-12 2022-07-15 新科环保科技有限公司 Air-conditioning heat pump system for preparing high-temperature hot water at low ambient temperature

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5484890B2 (en) * 2009-12-25 2014-05-07 三洋電機株式会社 Refrigeration equipment
CN111247377B (en) * 2017-10-27 2022-05-10 三菱电机株式会社 Refrigeration cycle device
CN109405372B (en) * 2018-10-31 2023-12-19 上海爱斯达克汽车空调系统有限公司 Throttle multi-port thermal expansion valve assembly and vehicle
CN110645736A (en) * 2019-06-28 2020-01-03 江苏雪龙新能源科技有限公司 Direct-current variable-frequency carbon dioxide heat pump cold and hot unit
CN110645731A (en) * 2019-10-24 2020-01-03 湖南埃瓦新能源科技有限公司 System for improving energy efficiency of low-temperature air energy heat pump and control method
CN113248106A (en) * 2021-05-17 2021-08-13 深圳德尔科机电环保科技有限公司 Efficient low-temperature enthalpy-increasing control device and method thereof
CN114674089B (en) * 2022-03-24 2023-10-13 广东开利暖通空调股份有限公司 Multi-connected refrigerating system and refrigerating method thereof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3614330B2 (en) * 1999-10-20 2005-01-26 シャープ株式会社 Supercritical vapor compression refrigeration cycle
JP2001263882A (en) * 2000-03-17 2001-09-26 Daikin Ind Ltd Heat pump device
CN1133047C (en) * 2001-03-14 2003-12-31 清华同方股份有限公司 Heat pump air conditioners suitable for cold area
JP2003042585A (en) * 2001-07-30 2003-02-13 Hitachi Ltd Air conditioner
JP2004286266A (en) * 2003-03-20 2004-10-14 Hitachi Ltd Refrigeration device and heat pump type cooling and heating machine
KR20050072299A (en) * 2004-01-06 2005-07-11 삼성전자주식회사 Cooling and heating air conditioning system
JP4408413B2 (en) * 2004-12-22 2010-02-03 日立アプライアンス株式会社 Refrigeration apparatus and air conditioner using the same

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101907326B (en) * 2009-06-04 2013-07-31 乐金电子(天津)电器有限公司 Integral air conditioner
CN101907326A (en) * 2009-06-04 2010-12-08 乐金电子(天津)电器有限公司 Integral air conditioner
CN101922823A (en) * 2010-09-02 2010-12-22 广州德能热源设备有限公司 Secondary air injection high-efficiency ultralow temperature heat pump unit
CN104279789A (en) * 2013-07-11 2015-01-14 东莞市微电环保科技有限公司 Triple co-generation air conditioner system
CN104279789B (en) * 2013-07-11 2017-11-07 东莞市微电环保科技有限公司 A kind of trilogy supply air-conditioning system
CN104634027A (en) * 2013-11-08 2015-05-20 珠海格力电器股份有限公司 Control method of enthalpy increasing air conditioning system
CN104634027B (en) * 2013-11-08 2017-01-18 珠海格力电器股份有限公司 Control method of enthalpy increasing air conditioning system
CN103940138A (en) * 2014-04-01 2014-07-23 广东美的暖通设备有限公司 Air-cooled heat pump unit
CN103940138B (en) * 2014-04-01 2016-08-17 广东美的暖通设备有限公司 Air-Cooled Heat Pump Unit
CN105371514B (en) * 2015-12-10 2018-05-18 珠海格力电器股份有限公司 Compressibility, air-conditioning system with second vapor injection and its judge control method
CN105371514A (en) * 2015-12-10 2016-03-02 珠海格力电器股份有限公司 Compression system with second vapor injection function, air conditioning system and judgment and control method of compression system
US10330350B2 (en) 2015-12-10 2019-06-25 Gree Electric Appliances, Inc. Of Zhuhai Air conditioning system, compression system with gas secondary injection and judgment and control method thereof
CN106556175A (en) * 2016-11-22 2017-04-05 广东美的暖通设备有限公司 Air-conditioning system and air-conditioning
CN106322814A (en) * 2016-11-22 2017-01-11 广东美的暖通设备有限公司 Air conditioning system and air conditioner
CN109654782A (en) * 2018-12-12 2019-04-19 珠海格力电器股份有限公司 The control method and device of electric expansion valve
CN109654782B (en) * 2018-12-12 2020-06-16 珠海格力电器股份有限公司 Control method and device of electronic expansion valve
CN110836417A (en) * 2019-11-18 2020-02-25 珠海格力电器股份有限公司 Air conditioner and air conditioner control method
CN114061056A (en) * 2020-07-28 2022-02-18 广东美的制冷设备有限公司 Air conditioner control method, air conditioner and computer readable storage medium
CN114061056B (en) * 2020-07-28 2023-05-30 广东美的制冷设备有限公司 Air conditioner control method, air conditioner and computer readable storage medium
CN114754430A (en) * 2022-04-12 2022-07-15 新科环保科技有限公司 Air-conditioning heat pump system for preparing high-temperature hot water at low ambient temperature

Also Published As

Publication number Publication date
WO2007059709A1 (en) 2007-05-31
CN100366992C (en) 2008-02-06

Similar Documents

Publication Publication Date Title
CN1800747A (en) Low-temperature air conditioner heat pump system and method for decreasing temperature regulation fluctuation by employing the same
CN100386580C (en) Heat pump air conditioner system and its steam jet control device and method
CN200996753Y (en) Refrigerating system of intermediate air-compensating compressor with economizer
CN100535548C (en) Super low temperature heat pump air conditioner system
CN101886852B (en) Method for controlling refrigerant flow using air-conditioning system of sub-cooler
CN102128508A (en) Ejector throttling and vapor supplementing system and heat pump or refrigerating system vapor supplementing method
CN106642787A (en) Refrigerating or heating pump system with adjustable refrigerant circulation quantity
CN104048366A (en) Air conditioner, outdoor unit of air conditioner, heating air supplementing method and refrigeration air supplementing method
CN112268376A (en) Fluorine pump type heat pipe and jet refrigeration cycle composite system and control method thereof
CN107796146B (en) Condensing system, air conditioning system and control method
CN100439809C (en) Compensating system and compensating control method for compressor
CN206683105U (en) A kind of compound computer-room air conditioning system of multiple
CN201066217Y (en) Novel heat pump system with bidirectional liquid storage tank
CN2896146Y (en) Heat-pump air-conditioner system and its steam jetting control device
CN2926935Y (en) Low-tmperature hot-pump air-conditioner system
CN105333641B (en) Air-source air conditioning and water heating system
CN104654679A (en) Condensing system, air-cooled air conditioning system and control method
CN106871474A (en) Air-cooled water-cooled combined air-conditioning system
CN114165869A (en) Fluorine pump system and control method thereof
CN1287121C (en) air conditioner throttling set able to carry out dynamic control of cool medlium filling amount
CN204063660U (en) Three stage compression autocascade cycle heat pump
CN2849548Y (en) Air supplying system for compressor
CN204460863U (en) A kind of condenser system and air-cooled type air conditioning system
CN215571358U (en) Compound refrigerating system with natural cooling function
CN101109588A (en) One-master-driving-two air conditioner refrigerating system with constant frequency

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant