CN201297796Y - High-efficiency jet enthalpy addition type air conditioner - Google Patents
High-efficiency jet enthalpy addition type air conditioner Download PDFInfo
- Publication number
- CN201297796Y CN201297796Y CNU2008202028139U CN200820202813U CN201297796Y CN 201297796 Y CN201297796 Y CN 201297796Y CN U2008202028139 U CNU2008202028139 U CN U2008202028139U CN 200820202813 U CN200820202813 U CN 200820202813U CN 201297796 Y CN201297796 Y CN 201297796Y
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Abstract
The utility model discloses a high-efficiency jet enthalpy addition type air conditioner which comprises a compressor, an indoor heat exchanger, an outdoor heat exchanger and a four-way valve; a first end of the indoor heat exchanger, a first end of the outdoor heat exchanger as well as an exhaust port and an air suction port of the compressor are respectively communicated with four ports of the four-way valve, and a second end of the indoor heat exchanger and a second end of the outdoor heat exchanger are communicated with each other through a connecting pipe; a first expansion valve is arranged on the side of the connecting pipe close to the indoor heat exchanger, a second expansion valve is arranged on the side of the connecting pipe close to the outdoor heat exchanger, a first one-way valve which is connected in parallel with the first expansion valve and a second one-way valve which is connected in parallel with the second expansion valve are arranged on the connecting pipe, and the first one-way valve and the second one-way valve respectively face to the indoor heat exchanger and the outdoor heat exchanger; the compressor is also provided with an air supply opening, the connecting pipe arranged between the first expansion valve and the second one-way valve is communicated with the air supply opening through an air supply pipe, and an air supply one-way valve facing to the air supply opening is arranged on the air supply pipe. When temperature of external environment is higher or lower, the refrigeration effect and the heating effect are favorable.
Description
Technical field
The utility model belongs to field of air conditioning, is specifically related to a kind of high efficiency jet and increases enthalpy type air-conditioner.
Background technology
At present, the normal air source heat pump air-conditioner unit of selling on the market, under the operating mode of outdoor low temperature, the cold-producing medium evaporite ratio is difficulty, the compressor air suction implication was pressed low, caused the compressor air suction quantity not sufficient, and compressor capacity can't effectively be brought into play, heating effect is poor, can't satisfy basic heat demand in the winter of cold; In like manner, under the operating mode of outdoor high temperature, behind the starting of air conditioner, because common compressor operation frequency is limited, compressor can not strengthen output, so refrigeration is slower, can not satisfy that the user wishes can fast-refrigerating and powerful refrigeration requirement; So, need make improvements to existing air source heat pump air-conditioner unit.
Summary of the invention
The purpose of this utility model is to provide a kind of high efficiency jet to increase enthalpy type air-conditioner, crosses under the low or too high situation at outdoor environment temperature, and the utility model can effectively improve heating or refrigeration of air-conditioning.
The utility model is achieved through the following technical solutions:
A kind of high efficiency jet increases enthalpy type air-conditioner, comprises compressor, indoor heat exchanger, outdoor heat exchanger, cross valve; The exhaust outlet of first end of indoor heat exchanger, first end of outdoor heat exchanger, compressor, air entry communicate with four ports of cross valve respectively, and second end of indoor heat exchanger, second end of outdoor heat exchanger communicate by tube connector; On aforementioned tube connector, be provided with first expansion valve, be provided with second expansion valve near outdoor heat exchanger one side near indoor heat exchanger one side, be provided with first check valve in parallel with first expansion valve and second check valve in parallel with second expansion valve on tube connector, first check valve, second check valve are respectively towards indoor heat exchanger, outdoor heat exchanger; Also be provided with gas supplementing opening on the aforementioned compressor, the tube connector between first expansion valve, second expansion valve communicates with gas supplementing opening by blowdown pipe, and is provided with the tonifying Qi check valve towards gas supplementing opening on this blowdown pipe.
Further structure of the present utility model is:
Also be provided with magnetic valve on the described blowdown pipe, the control circuit of described magnetic valve and air-conditioner is electrically connected.
On described tube connector, also be provided with the indoor set expansion valve near described indoor heat exchanger position, on described tube connector, also be provided with the off-premises station expansion valve near described outdoor heat exchanger position, on described tube connector, be provided with the off-premises station check valve in parallel, the described dorsad outdoor heat exchanger of this off-premises station check valve with this off-premises station expansion valve.
Between described compressor air suction mouth and described cross valve, be provided with gas-liquid separator.
Described tube connector is two sections, comprise the indoor tube connector near described indoor heat exchanger one side, the outside tube connector of close described outdoor heat exchanger one side, this air-conditioner also includes fluid reservoir, and indoor tube connector, outside tube connector, described blowdown pipe all communicate by this fluid reservoir.
Be equipped with temperature-sensitive bag near described fluid reservoir one end, described blowdown pipe near described gas supplementing opening one end near described fluid reservoir one end, described indoor tube connector at described outside tube connector.
The utility model has following several mode of operation:
1, refrigeration mode, under the normal situation of outdoor environment temperature, the flow direction of cold-producing medium is: exhaust outlet of compressor-cross valve-outdoor heat exchanger-off-premises station check valve-second expansion valve-fluid reservoir-first check valve-indoor set expansion valve-indoor heat exchanger-cross valve-compressor air suction mouth;
2, heating mode, under the normal situation of outdoor environment temperature, the flow direction of cold-producing medium is: exhaust outlet of compressor-cross valve-indoor heat exchanger-indoor set expansion valve-first expansion valve-fluid reservoir-second check valve-off-premises station expansion valve-outdoor heat exchanger-cross valve-compressor air suction mouth;
3, refrigeration tonifying Qi pattern, under the outdoor environment temperature condition with higher, the flow direction of cold-producing medium is: exhaust outlet of compressor-cross valve-outdoor heat exchanger-off-premises station check valve-second expansion valve-fluid reservoir-first check valve-indoor set expansion valve-indoor heat exchanger-cross valve-compressor air suction mouth, magnetic valve on the blowdown pipe is opened simultaneously, and the cold-producing medium in the fluid reservoir flows to the compressor gas supplementing opening through the tonifying Qi check valve simultaneously;
4, heat the tonifying Qi pattern, under the lower situation of outdoor environment temperature, the flow direction of cold-producing medium is: exhaust outlet of compressor-cross valve-indoor heat exchanger-indoor set expansion valve-first expansion valve-fluid reservoir-second check valve-off-premises station expansion valve-outdoor heat exchanger-cross valve-compressor air suction mouth, magnetic valve on the blowdown pipe is opened simultaneously, and the cold-producing medium in the fluid reservoir flows to the compressor gas supplementing opening through the tonifying Qi check valve simultaneously.
Under the tonifying Qi pattern, cold-producing medium is after sucking compressor through gas supplementing opening, and in the vortex dish of compressor, the gas of intermediate pressure mixes with the gas of low pressure, is pressed to be the gas of high pressure compressed again machine exhaust outlet output then by compressor.
In the utility model, three temperature-sensitive bags are the direct sensing outdoor environment temperature not, but because the outdoor environment temperature remote-effects arrive the cold-producing medium refrigeration, three temperature-sensitive bags pass through the temperature of sensing indoor tube connector, outside tube connector, blowdown pipe, and the aperture of indirect control electric expansion valve is controlled the operational mode of air-conditioner thus.
The utility model has the advantages that:
Under refrigerating state, if outdoor environment temperature is higher, the compressor gas supplementing opening is carried out tonifying Qi spray enthalpy by the aperture of control electric expansion valve, improve the output quantity of exhaust outlet of compressor cold-producing medium, improve refrigeration with this; Under the state of heating,,, improve the compression mechanism thermal effect by to compressor gas supplementing opening tonifying Qi spray enthalpy if indoor environment temperature is lower.
Description of drawings
Fig. 1 is a structure chart of the present utility model;
Fig. 2 is a pressure-enthalpy chart of the present utility model;
Description of reference numerals:
1, compressor, 2, indoor heat exchanger, 3, outdoor heat exchanger, 4, cross valve, 5, exhaust outlet of compressor, 6, the compressor air suction mouth, 7, gas supplementing opening, 8, first expansion valve, 9, first check valve, 10, second expansion valve, 11, second check valve, 12, tonifying Qi check valve, 13, the indoor set expansion valve, 14, the off-premises station expansion valve, 15, off-premises station check valve, 16, gas-liquid separator, 17, fluid reservoir, 18, the indoor tube connector, 19, outside tube connector, 20, temperature-sensitive bag, 21, blowdown pipe, 22, magnetic valve.
The specific embodiment
As shown in Figure 1 and Figure 2, a kind of high efficiency jet increases enthalpy type air-conditioner, comprises compressor 1, indoor heat exchanger 2, outdoor heat exchanger 3, cross valve 4; The exhaust outlet 5 of first end of indoor heat exchanger 2, first end of outdoor heat exchanger 3, compressor, air entry 6 communicate with four ports of cross valve 4 respectively, and first end of indoor heat exchanger 2, first end of outdoor heat exchanger 3 communicate by tube connector; On aforementioned tube connector, be provided with first expansion valve 8, be provided with second expansion valve 10 near outdoor heat exchanger 3 one sides near indoor heat exchanger 2 one sides, on tube connector, be provided with first check valve 9 in parallel and second check valve 11, the first check valves 9 in parallel, second check valve 11 respectively towards indoor heat exchanger 2, outdoor heat exchanger 3 with second expansion valve 10 with first expansion valve 8; Also be provided with gas supplementing opening 7 on the aforementioned compressor 1, the tube connector between first expansion valve 8, second expansion valve 10 communicates with gas supplementing opening 7 by blowdown pipe 21, and is provided with tonifying Qi check valve 12 and magnetic valve 22 towards gas supplementing opening 7 on this blowdown pipe 21.
Wherein, described tube connector is two sections, comprise the indoor tube connector 18 near indoor heat exchanger 2 one sides, the outside tube connector 19 of close outdoor heat exchanger 3 one sides, this air-conditioner also includes fluid reservoir 17, and indoor tube connector 18, outside tube connector 19, blowdown pipe 21 all communicate by this fluid reservoir 17; On indoor tube connector 18, also be provided with indoor set expansion valve 13 near indoor heat exchanger 2 positions, on outside tube connector 19, also be provided with off-premises station expansion valve 14 near outdoor heat exchanger 3 positions, be provided with the off-premises station check valve 15 in parallel with this off-premises station expansion valve 14 on outside tube connector 19, this off-premises station check valve 15 is outdoor heat exchanger 3 dorsad; Between compressor air suction mouth 6 and cross valve 4, be provided with gas-liquid separator 16; Be equipped with temperature-sensitive bag 20 near fluid reservoir 17 1 ends, blowdown pipe 21 near gas supplementing opening 7 one ends near fluid reservoir 17 1 ends, indoor tube connector 18 at outside tube connector 19.
Present embodiment has following several mode of operation:
1, refrigeration mode, under the normal situation of outdoor environment temperature, the flow direction of cold-producing medium is: exhaust outlet of compressor 5-cross valve 4-outdoor heat exchanger 3-off-premises station check valve 15-the second expansion valve 10-fluid reservoir 17-the first check valve 9-indoor set expansion valve 13-indoor heat exchanger 2-cross valve 4-compressor air suction mouth 6;
2, heating mode, under the normal situation of outdoor environment temperature, the flow direction of cold-producing medium is: exhaust outlet of compressor 5-cross valve 4-indoor heat exchanger 2-indoor set expansion valve 13-the first expansion valve 8-fluid reservoir 17-the second check valve 11-off-premises station expansion valve 14-outdoor heat exchanger 3-cross valve 4-compressor air suction mouth 6;
3, refrigeration tonifying Qi pattern, under the outdoor environment temperature condition with higher, the flow direction of cold-producing medium is: exhaust outlet of compressor 5-cross valve 4-outdoor heat exchanger 3-off-premises station check valve 15-the second expansion valve 10-fluid reservoir 17-the first check valve 9-indoor set expansion valve 13-indoor heat exchanger 2-cross valve 4-compressor air suction mouth 6, magnetic valve on the blowdown pipe 21 22 is opened simultaneously, cold-producing medium in the fluid reservoir 17 flows to compressor gas supplementing opening 7 through tonifying Qi check valve 12 simultaneously, cold-producing medium is after sucking compressor 1 through gas supplementing opening 7, in the vortex dish of compressor 1, the gas of intermediate pressure mixes with the gas of low pressure, pressed by compressor 1 then and be the gas of high pressure, compressed again machine exhaust outlet 5 outputs, its concrete operation principle is as follows:
(state point a) is compressed to intermediate pressure (state point b) to the refrigerant gas of the low-temp low-pressure that compressor 1 is evaporated indoor heat exchanger 2, in the vortex dish of compressor 1, the gas of intermediate pressure (state point b) mixes (state point j) with the gas (state point i) of the intermediate pressure that sucks from compressor gas supplementing opening 7, continue then by the gas of compressor 1 boil down to HTHP (state point c), the refrigerant gas of HTHP is cooled to the refrigerant liquid (state point d) of HTHP in outdoor heat exchanger 3, highly pressurised liquid is to enter fluid reservoir 17 behind the gas-liquid mixture (state point e) of intermediate pressure by off-premises station expansion valve 14 and 10 throttlings of second expansion valve, the part of refrigerant flash distillation is that the refrigerant gas (state point i) of intermediate pressure is sucked by compressor gas supplementing opening 7 in fluid reservoir 17, another part cold-producing medium is the subcooled liquid (state point g) of intermediate pressure by crossing cold then in the fluid reservoir 17, and by 13 throttlings of indoor set expansion valve (state point h), (state point a) and by compressor air entry 6 sucks, and finishes a kind of refrigeration cycle to enter indoor heat exchanger 2 evaporations then;
4, heat the tonifying Qi pattern, under the lower situation of outdoor environment temperature, the flow direction of cold-producing medium is: exhaust outlet of compressor 5-cross valve 4-indoor heat exchanger 2-indoor set expansion valve 14-the first expansion valve 8-fluid reservoir 17-the second check valve 11-off-premises station expansion valve 14-outdoor heat exchanger 3-cross valve 4-compressor air suction mouth 6, magnetic valve on the blowdown pipe 21 22 is opened simultaneously, cold-producing medium in the fluid reservoir 17 flows to compressor gas supplementing opening 7 through tonifying Qi check valve 12 simultaneously, cold-producing medium is after sucking compressor 1 through gas supplementing opening 7, in the vortex dish of compressor 1, the gas of intermediate pressure mixes with the gas of low pressure, pressed by compressor 1 then and be the gas of high pressure, compressed again machine exhaust outlet 5 outputs, its concrete operation principle is as follows:
(state point a) is compressed to intermediate pressure (state point b) to the refrigerant gas of the low-temp low-pressure that compressor 1 is evaporated outdoor heat exchanger 3, in the vortex dish of compressor 1, the gas of intermediate pressure (state point b) mixes (state point j) with the gas (state point i) of the intermediate pressure that sucks from compressor gas supplementing opening 7, continue then by the gas of compressor 1 boil down to HTHP (state point c), the refrigerant gas of HTHP is cooled to the refrigerant liquid (state point d) of HTHP in indoor heat exchanger 2, highly pressurised liquid is to enter fluid reservoir 17 behind the gas-liquid mixture (state point e) of intermediate pressure by indoor set expansion valve 13 and 8 throttlings of first expansion valve, the part of refrigerant flash distillation is that the refrigerant gas (state point i) of intermediate pressure is sucked by compressor gas supplementing opening 7 in fluid reservoir 17, another part cold-producing medium is the subcooled liquid (state point g) of intermediate pressure by crossing cold then in the fluid reservoir 17, and by 14 throttlings of off-premises station expansion valve (state point h), (state point a) and by compressor air entry 6 sucks 3 evaporations of inlet chamber external heat exchanger, finishes one and heats circulation then;
The advantage of present embodiment is:
Under refrigerating state, if outdoor environment temperature is higher, compressor gas supplementing opening 7 is carried out tonifying Qi spray enthalpy by the aperture of control electric expansion valve, improve the output quantity of exhaust outlet of compressor 5 cold-producing mediums, improve the air-conditioner refrigeration with this; Under the state of heating,,, improve the air conditioner heat-production effect by to compressor gas supplementing opening 7 tonifying Qi spray enthalpy if indoor environment temperature is lower.
Claims (6)
1, a kind of high efficiency jet increases enthalpy type air-conditioner, comprises compressor, indoor heat exchanger, outdoor heat exchanger, cross valve; The exhaust outlet of first end of indoor heat exchanger, first end of outdoor heat exchanger, compressor, air entry communicate with four ports of cross valve respectively, and second end of indoor heat exchanger, second end of outdoor heat exchanger communicate by tube connector; It is characterized in that, on aforementioned tube connector, be provided with first expansion valve, be provided with second expansion valve near outdoor heat exchanger one side near indoor heat exchanger one side, be provided with first check valve in parallel with first expansion valve and second check valve in parallel with second expansion valve on tube connector, first check valve, second check valve are respectively towards indoor heat exchanger, outdoor heat exchanger; Also be provided with gas supplementing opening on the aforementioned compressor, the tube connector between first expansion valve, second expansion valve communicates with gas supplementing opening by blowdown pipe, and is provided with the tonifying Qi check valve towards gas supplementing opening on this blowdown pipe.
2, high efficiency jet increases enthalpy type air-conditioner according to claim 1, it is characterized in that, also is provided with magnetic valve on the described blowdown pipe, and the control circuit of described magnetic valve and air-conditioner is electrically connected.
3, high efficiency jet increases enthalpy type air-conditioner according to claim 1, it is characterized in that, on described tube connector, also be provided with the indoor set expansion valve near described indoor heat exchanger position, on described tube connector, also be provided with the off-premises station expansion valve near described outdoor heat exchanger position, on described tube connector, be provided with the off-premises station check valve in parallel, the described dorsad outdoor heat exchanger of this off-premises station check valve with this off-premises station expansion valve.
4, high efficiency jet increases enthalpy type air-conditioner according to claim 1, it is characterized in that, is provided with gas-liquid separator between described compressor air suction mouth and described cross valve.
5, increase enthalpy type air-conditioner as high efficiency jet as described in claim 1 or 2 or 3 or 4, it is characterized in that, described tube connector is two sections, comprise the indoor tube connector near described indoor heat exchanger one side, the outside tube connector of close described outdoor heat exchanger one side, this air-conditioner also includes fluid reservoir, and indoor tube connector, outside tube connector, described blowdown pipe all communicate by this fluid reservoir.
6, increase enthalpy type air-conditioner as high efficiency jet as described in the claim 5, it is characterized in that, be equipped with temperature-sensitive bag near described fluid reservoir one end, described blowdown pipe near described gas supplementing opening one end near described fluid reservoir one end, described indoor tube connector at described outside tube connector, the control circuit of three temperature-sensitive bags and this air-conditioner is electrically connected, described expansion valve is an electric expansion valve, and also the control circuit with this air-conditioner is electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202028139U CN201297796Y (en) | 2008-11-03 | 2008-11-03 | High-efficiency jet enthalpy addition type air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2008202028139U CN201297796Y (en) | 2008-11-03 | 2008-11-03 | High-efficiency jet enthalpy addition type air conditioner |
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| CN201297796Y true CN201297796Y (en) | 2009-08-26 |
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| CNU2008202028139U Expired - Lifetime CN201297796Y (en) | 2008-11-03 | 2008-11-03 | High-efficiency jet enthalpy addition type air conditioner |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538273A (en) * | 2012-02-10 | 2012-07-04 | 海信（山东）空调有限公司 | Vapor-injected air-conditioning system, vapor-injected air-conditioning control method and air-conditioner |
| CN102759236A (en) * | 2011-04-29 | 2012-10-31 | 北京贝州威亚新能源科技有限公司 | Enthalpy increasing device of heat pump unit |
| CN102840716A (en) * | 2011-06-24 | 2012-12-26 | 珠海格力电器股份有限公司 | Heat pump system and control method thereof |
| CN102889641A (en) * | 2012-09-12 | 2013-01-23 | 青岛海信日立空调系统有限公司 | Air conditioner used in high-temperature environment and control method |
| WO2013120375A1 (en) * | 2012-02-14 | 2013-08-22 | 国家节能环保制冷设备工程技术研究中心 | Method of controlling a heat pump system with two-stage enthalpy increase |
| CN103512153A (en) * | 2013-07-16 | 2014-01-15 | 广东美芝制冷设备有限公司 | Air-conditioning system with enthalpy increased through vapor injection and control method thereof |
| CN103542566A (en) * | 2012-07-10 | 2014-01-29 | 珠海格力电器股份有限公司 | Room air conditioner |
| CN104048366A (en) * | 2013-03-15 | 2014-09-17 | 珠海格力电器股份有限公司 | Air conditioner, outdoor unit of air conditioner, heating air supplementing method and refrigeration air supplementing method |
| CN106766293A (en) * | 2016-12-02 | 2017-05-31 | 珠海格力电器股份有限公司 | A kind of air-conditioning system with enthalpy increased through vapor injection and control method thereof for preventing refrigerant return |
| CN109442637A (en) * | 2018-11-19 | 2019-03-08 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of Gas-supplying enthalpy-increasing system and its control method |
| CN110108059A (en) * | 2019-05-13 | 2019-08-09 | 广东炬邦热能设备有限公司 | A kind of low-temperature enthalpy-increasing heat pump system |
| CN113503620A (en) * | 2021-07-14 | 2021-10-15 | 珠海格力电器股份有限公司 | Air conditioning system control method and device, storage medium and air conditioning system |
| WO2021227800A1 (en) * | 2020-05-13 | 2021-11-18 | 广东美的制冷设备有限公司 | Air conditioner sterilization method, air conditioner, and storage medium |
-
2008
- 2008-11-03 CN CNU2008202028139U patent/CN201297796Y/en not_active Expired - Lifetime
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759236A (en) * | 2011-04-29 | 2012-10-31 | 北京贝州威亚新能源科技有限公司 | Enthalpy increasing device of heat pump unit |
| CN102759236B (en) * | 2011-04-29 | 2015-08-05 | 北京贝州威亚新能源科技有限公司 | Source pump increases enthalpy device |
| CN102840716B (en) * | 2011-06-24 | 2015-04-01 | 珠海格力电器股份有限公司 | Heat pump system and control method thereof |
| CN102840716A (en) * | 2011-06-24 | 2012-12-26 | 珠海格力电器股份有限公司 | Heat pump system and control method thereof |
| CN102538273A (en) * | 2012-02-10 | 2012-07-04 | 海信（山东）空调有限公司 | Vapor-injected air-conditioning system, vapor-injected air-conditioning control method and air-conditioner |
| WO2013120375A1 (en) * | 2012-02-14 | 2013-08-22 | 国家节能环保制冷设备工程技术研究中心 | Method of controlling a heat pump system with two-stage enthalpy increase |
| CN103542566A (en) * | 2012-07-10 | 2014-01-29 | 珠海格力电器股份有限公司 | Room air conditioner |
| CN102889641A (en) * | 2012-09-12 | 2013-01-23 | 青岛海信日立空调系统有限公司 | Air conditioner used in high-temperature environment and control method |
| CN104048366A (en) * | 2013-03-15 | 2014-09-17 | 珠海格力电器股份有限公司 | Air conditioner, outdoor unit of air conditioner, heating air supplementing method and refrigeration air supplementing method |
| CN104048366B (en) * | 2013-03-15 | 2017-02-08 | 珠海格力电器股份有限公司 | Air conditioner, outdoor unit of air conditioner, heating air supplementing method and refrigeration air supplementing method |
| CN103512153A (en) * | 2013-07-16 | 2014-01-15 | 广东美芝制冷设备有限公司 | Air-conditioning system with enthalpy increased through vapor injection and control method thereof |
| CN103512153B (en) * | 2013-07-16 | 2016-08-31 | 广东美芝制冷设备有限公司 | Air-conditioning system with enthalpy increased through vapor injection and control method thereof |
| CN106766293A (en) * | 2016-12-02 | 2017-05-31 | 珠海格力电器股份有限公司 | A kind of air-conditioning system with enthalpy increased through vapor injection and control method thereof for preventing refrigerant return |
| CN109442637A (en) * | 2018-11-19 | 2019-03-08 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of Gas-supplying enthalpy-increasing system and its control method |
| CN110108059A (en) * | 2019-05-13 | 2019-08-09 | 广东炬邦热能设备有限公司 | A kind of low-temperature enthalpy-increasing heat pump system |
| WO2021227800A1 (en) * | 2020-05-13 | 2021-11-18 | 广东美的制冷设备有限公司 | Air conditioner sterilization method, air conditioner, and storage medium |
| CN113503620A (en) * | 2021-07-14 | 2021-10-15 | 珠海格力电器股份有限公司 | Air conditioning system control method and device, storage medium and air conditioning system |
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Granted publication date: 20090826 |
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| CX01 | Expiry of patent term |