CN203375761U - Air conditioner - Google Patents
Air conditioner Download PDFInfo
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- CN203375761U CN203375761U CN201320312743.3U CN201320312743U CN203375761U CN 203375761 U CN203375761 U CN 203375761U CN 201320312743 U CN201320312743 U CN 201320312743U CN 203375761 U CN203375761 U CN 203375761U
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- heat exchanger
- air
- compressor
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- gas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The utility model discloses an air conditioner which comprises a compressor, a four-way valve, an outdoor heat exchanger, a throttling component, an indoor heat exchanger and an auxiliary device. The compressor is provided with an air discharging opening and an air return opening, the air discharging opening of the compressor is connected with the air inlet end of the four-way valve, an air-liquid separator is connected between the air return opening of the compressor and the air discharging end of the four-way valve, the auxiliary device comprises an auxiliary heat exchanger, a first electronic valve and a second electronic valve, one end of the auxiliary heat exchanger is connected with the air discharging opening of the compressor through the second electronic valve, and the other end of the auxiliary heat exchanger is connected between the outdoor heat exchanger and the throttling component through the first electronic valve. When low temperature heating is started, high temperature and high pressure gas-state refrigerants discharged from the air discharging opening of the compressor push liquid-state refrigerants in the outdoor heat exchanger, the evaporation pressure is increased, refrigerant circulation of a refrigerant system is quickened, liquid-state refrigerants in the air-liquid separator are heated through the auxiliary heat exchanger, rapid vaporization of the liquid-state refrigerants can be guaranteed, the air return pressure is increased, liquid compression of the system is prevented, and the reliability of the compressor is guaranteed.
Description
Technical field
The utility model relates to air-conditioning technical field, relates in particular to a kind of system back pressure that increases, and reduces the air-conditioner that flows back to draught head.
Background technology
In heat pump type air conditioner system, compressor is the core component of air conditioner and heat pump unit.Reliable under various environment in order to guarantee compressor, need to carry out design and selection to the various valve bodies in air-conditioning system, tank body.
When low-temperature heating starts, in system, most refrigerant generally accumulates in the low pressure tank and outdoor heat exchanger of off-premises station with liquid form, outdoor heat exchanger is as evaporimeter, liquid refrigerants accumulates too much, can affect mobility and the evaporation effect of system refrigerant, causes the back pressure of compressor too low, return-air degree of superheat deficiency, have the risk of hydraulic compression, this has just shortened the life-span of air-conditioning system greatly, and greatly reduces the heating effect of system simultaneously.
In addition, in the low-temperature heating running, if back pressure is too low, flow back to air pressure than excessive, excessive discharge temperature, high pressure chest compressor inside fails to obtain effectively cooling, the risk that compressor exists high temperature to burn.
The utility model content
Main purpose of the present utility model is to provide a kind of can effectively improve the system back pressure, reduces and flows back to the air pressure ratio, prevents hydraulic compression, the air-conditioner that the assurance system is reliable.
In order to achieve the above object, the utility model proposes a kind of air-conditioner, the compressor that comprises mutual loop in series, cross valve, outdoor heat exchanger, throttle part and indoor heat exchanger, described compressor has exhaust outlet and gas returning port, the exhaust outlet of described compressor is connected with the inlet end of cross valve, be connected with gas-liquid separator between the gas returning port of described compressor and the exhaust end of cross valve, also comprise servicing unit, described servicing unit comprises a supplementary heat exchanger and the first electronic valve, described supplementary heat exchanger one end connects the exhaust outlet of compressor, the other end of described supplementary heat exchanger is connected between described outdoor heat exchanger and throttle part through described the first electronic valve.
Preferably, described supplementary heat exchanger is arranged on the outside of described gas-liquid separator.
Preferably, described supplementary heat exchanger is arranged on the inside of described gas-liquid separator.
Preferably, described servicing unit also comprises the second magnetic valve, and described the second electronic valve is connected between the exhaust outlet of an end of described supplementary heat exchanger and compressor.
Preferably, described the second electronic valve is magnetic valve or electric expansion valve.
Preferably, this air-conditioner also comprises oil eliminator, and described oil eliminator is connected between the inlet end of the exhaust outlet of compressor and cross valve; Described supplementary heat exchanger one end connects the exhaust outlet of compressor through described oil eliminator.
Preferably, described the first electronic valve is check valve, magnetic valve or electric expansion valve.
Preferably, described throttling arrangement is capillary or electric expansion valve.
Preferably, described cross valve is magnetic valve.
Preferably, between described indoor heat exchanger and throttle part, and be connected with respectively choke valve between indoor heat exchanger and cross valve.
A kind of air-conditioner that the utility model embodiment proposes, by increase by a servicing unit in system, this servicing unit comprises a supplementary heat exchanger and an electronic valve, supplementary heat exchanger one end connects the outlet of oil eliminator, the other end of supplementary heat exchanger is connected between outdoor heat exchanger and throttle part through electronic valve, supplementary heat exchanger and gas-liquid separator carry out heat exchange, when low-temperature heating starts, utilize oil eliminator HTHP gaseous coolant out to promote the liquid coolant of outdoor heat exchanger, increase evaporating pressure, accelerate the coolant system refrigerant circulation, and by the liquid refrigerants in supplementary heat exchanger heat air liquid/gas separator, guarantee its fast vaporizing, reach the effect that increases back pressure, and hydraulic compression appears in anti-locking system, guarantee the reliability of compressor.
The accompanying drawing explanation
Fig. 1 is the structural representation of the utility model air-conditioner the first embodiment;
Fig. 2 is the structural representation of the utility model air-conditioner the second embodiment.
In order to make the technical solution of the utility model clearer, clear, below in conjunction with accompanying drawing, be described in further detail.
The specific embodiment
Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, the utility model the first embodiment proposes a kind of air-conditioner, comprises compressor 1, cross valve 3, outdoor heat exchanger 4, throttle part 5, indoor heat exchanger 10 and servicing unit, wherein:
Described cross valve 3 has suction end, exhaust end, condensation end, evaporation ends.
Described compressor 1 has exhaust outlet and gas returning port, between the exhaust end of the gas returning port of described compressor 1 and cross valve 3, is connected with gas-liquid separator 6.
The exhaust outlet of described compressor 1 is connected with the inlet end of cross valve 3.
When air-conditioning heating moves, the condensation end of cross valve 3 connects indoor heat exchanger 10, the evaporation ends junction chamber external heat exchanger 4 of cross valve 3; When air conditioner refrigerating moves, the condensation end junction chamber external heat exchanger 4 of cross valve 3, the evaporation ends of cross valve 3 connects indoor heat exchanger 10.
Above-mentioned throttle part 5 is connected between outdoor heat exchanger 4 and indoor heat exchanger 10.
Described servicing unit comprises a supplementary heat exchanger 8, the first electronic valve 9 and the second electronic valve 7, one end of described supplementary heat exchanger 8 connects the outlet of oil eliminator 2 through the second electronic valve 7, the other end of described supplementary heat exchanger 8 is connected between described outdoor heat exchanger 4 and throttle part 5 through described the first electronic valve 9.
As a kind of embodiment, above-mentioned supplementary heat exchanger 8 can be arranged on the outside of described gas-liquid separator 6, also can be arranged on the inside of described gas-liquid separator 6, can carry out heat exchange with gas-liquid separator 6.
When air conditioner low temperature heating startup or the little load operation of low-temperature heating, in system, most of refrigerant all accumulates in outdoor heat exchanger 4 and gas-liquid separator 6 with liquid form, when system detects back pressure when on the low side, open the second magnetic valve, exhaust outlet HTHP gaseous coolant process oil eliminator 2 out from compressor 1, as shown by arrows in FIG., a part enters indoor heat exchanger 10 by the condensation end of cross valve 3, enter outdoor heat exchanger 4 through throttle part 5, evaporation ends by cross valve 3 enters gas-liquid separator 6 again, get back to compressor 1 from the gas returning port of compressor 1.
In addition, shunt a part of HTHP gaseous coolant to servicing unit from compressor 1 exhaust outlet, again through the second electronic valve 7, supplementary heat exchanger 8 and the first electronic valve 9, deliver in outdoor heat exchanger 4, to increase the refrigerant evaporation pressure in outdoor heat exchanger 4, accelerate the coolant system refrigerant circulation, supplement return-air low pressure; In addition, can also be by the liquid refrigerants in supplementary heat exchanger 8 heat air liquid/gas separators 6, the refrigerant of returning in assurance outdoor heat exchanger 4 and the liquid refrigerants energy fast vaporizing in gas-liquid separator 6, thereby supplement return-air low pressure, avoid occurring hydraulic compression to make to cause compressor 1 insufficient lubrication and wear and tear, or excessive discharge temperature causes the situation of burning, effectively guarantee the heating effect of reliability and the system of compressor 1.
As a kind of embodiment, above-mentioned the second electronic valve 7 can be magnetic valve or electric expansion valve, or other electronic valves; Above-mentioned the first electronic valve 9 can be check valve, magnetic valve or electric expansion valve or other electronic valves; Described throttling arrangement can adopt capillary or electric expansion valve etc.; Described cross valve 3 can be magnetic valve.
Further, between described indoor heat exchanger 10 and throttle part 5, and can also be connected respectively choke valve (not marking in figure) between indoor heat exchanger 10 and cross valve 3.
The present embodiment air-conditioner, by increase by a servicing unit in system, this servicing unit comprises a supplementary heat exchanger 8 and an electronic valve, supplementary heat exchanger 8 one ends connect the exhaust outlet of compressor 1, the other end of supplementary heat exchanger 8 is connected between outdoor heat exchanger 4 and throttle part 5 through electronic valve, supplementary heat exchanger 8 carries out heat exchange with gas-liquid separator 6, when low-temperature heating starts, utilize compressor 1 exhaust outlet HTHP gaseous coolant out to promote the liquid coolant of outdoor heat exchanger 4, increase evaporating pressure, accelerate the coolant system refrigerant circulation, and by the liquid refrigerants in supplementary heat exchanger 8 heat air liquid/gas separators 6, guarantee its fast vaporizing, reach the effect that increases back pressure, and hydraulic compression appears in anti-locking system, guarantee the reliability of compressor 1.
As shown in Figure 2, the utility model the second embodiment proposes a kind of air-conditioner, similar to above-mentioned the first embodiment, includes compressor 1, cross valve 3, outdoor heat exchanger 4, throttle part 5, indoor heat exchanger 10 and servicing unit, wherein:
Described cross valve 3 has suction end, exhaust end, condensation end, evaporation ends.
Described compressor 1 has exhaust outlet and gas returning port, between the exhaust end of the gas returning port of described compressor 1 and cross valve 3, is connected with gas-liquid separator 6.
Its difference is: be connected with oil eliminator 2 between the inlet end of the exhaust outlet of compressor described in the present embodiment 1 and cross valve 3, particularly, the exhaust outlet of compressor 1 connects the import of oil eliminator 2, and the outlet of oil eliminator 2 connects the inlet end of cross valve 3.
More specifically, when air-conditioning heating moves, the condensation end of cross valve 3 connects indoor heat exchanger 10, the evaporation ends junction chamber external heat exchanger 4 of cross valve 3; When air conditioner refrigerating moves, the condensation end junction chamber external heat exchanger 4 of cross valve 3, the evaporation ends of cross valve 3 connects indoor heat exchanger 10.
Above-mentioned throttle part 5 is connected between outdoor heat exchanger 4 and indoor heat exchanger 10.
Described servicing unit comprises a supplementary heat exchanger 8, the first electronic valve 9 and the second electronic valve 7, one end of described supplementary heat exchanger 8 connects the outlet of oil eliminator 2 through the second electronic valve 7, the other end of described supplementary heat exchanger 8 is connected between described outdoor heat exchanger 4 and throttle part 5 through described the first electronic valve 9.
As a kind of embodiment, above-mentioned supplementary heat exchanger 8 can be arranged on the outside of described gas-liquid separator 6, also can be arranged on the inside of described gas-liquid separator 6, can carry out heat exchange with gas-liquid separator 6.
When air conditioner low temperature heating startup or the little load operation of low-temperature heating, in system, most of refrigerant all accumulates in outdoor heat exchanger 4 and gas-liquid separator 6 with liquid form, when system detects back pressure when on the low side, open the second magnetic valve, exhaust outlet HTHP gaseous coolant process oil eliminator 2 out from compressor 1, as shown by arrows in FIG., a part enters indoor heat exchanger 10 by the condensation end of cross valve 3, enter outdoor heat exchanger 4 through throttle part 5, evaporation ends by cross valve 3 enters gas-liquid separator 6 again, get back to compressor 1 from the gas returning port of compressor 1.
In addition, shunt a part of HTHP gaseous coolant to servicing unit from the outlet of oil eliminator 2, again through the second electronic valve 7, supplementary heat exchanger 8 and the first electronic valve 9, deliver in outdoor heat exchanger 4, to increase the refrigerant evaporation pressure in outdoor heat exchanger 4, accelerate the coolant system refrigerant circulation, supplement return-air low pressure; In addition, can also be by the liquid refrigerants in supplementary heat exchanger 8 heat air liquid/gas separators 6, the refrigerant of returning in assurance outdoor heat exchanger 4 and the liquid refrigerants energy fast vaporizing in gas-liquid separator 6, thereby supplement return-air low pressure, avoid occurring hydraulic compression to make to cause compressor 1 insufficient lubrication and wear and tear, or excessive discharge temperature causes the situation of burning, effectively guarantee the heating effect of reliability and the system of compressor 1.
As a kind of embodiment, above-mentioned the second electronic valve 7 can be magnetic valve or electric expansion valve, or other electronic valves; Above-mentioned the first electronic valve 9 can be check valve, magnetic valve or electric expansion valve or other electronic valves; Described throttling arrangement can adopt capillary or electric expansion valve etc.; Described cross valve 3 can be magnetic valve.
Further, between described indoor heat exchanger 10 and throttle part 5, and can also be connected respectively choke valve (not marking in figure) between indoor heat exchanger 10 and cross valve 3.
The utility model embodiment air-conditioner, by increase by a servicing unit in system, this servicing unit comprises a supplementary heat exchanger 8 and an electronic valve, supplementary heat exchanger 8 one ends connect the outlet of oil eliminator 2, the other end of supplementary heat exchanger 8 is connected between outdoor heat exchanger 4 and throttle part 5 through electronic valve, supplementary heat exchanger 8 carries out heat exchange with gas-liquid separator 6, when low-temperature heating starts, utilize oil eliminator 2 HTHP gaseous coolant out to promote the liquid coolant of outdoor heat exchanger 4, increase evaporating pressure, accelerate the coolant system refrigerant circulation, and by the liquid refrigerants in supplementary heat exchanger 8 heat air liquid/gas separators 6, guarantee its fast vaporizing, reach the effect that increases back pressure, and hydraulic compression appears in anti-locking system, guarantee the reliability of compressor 1.
Above are only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical field, all in like manner be included in scope of patent protection of the present utility model.
Claims (10)
1. an air-conditioner, the compressor that comprises mutual loop in series, cross valve, outdoor heat exchanger, throttle part and indoor heat exchanger, described compressor has exhaust outlet and gas returning port, the exhaust outlet of described compressor is connected with the inlet end of cross valve, be connected with gas-liquid separator between the gas returning port of described compressor and the exhaust end of cross valve, it is characterized in that, also comprise servicing unit, described servicing unit comprises a supplementary heat exchanger and the first electronic valve, described supplementary heat exchanger one end connects the exhaust outlet of compressor, the other end of described supplementary heat exchanger is connected between described outdoor heat exchanger and throttle part through described the first electronic valve.
2. air-conditioner according to claim 1, is characterized in that, described supplementary heat exchanger is arranged on the outside of described gas-liquid separator.
3. air-conditioner according to claim 1, is characterized in that, described supplementary heat exchanger is arranged on the inside of described gas-liquid separator.
4. air-conditioner according to claim 1, is characterized in that, described servicing unit also comprises the second magnetic valve, and described the second electronic valve is connected between the exhaust outlet of an end of described supplementary heat exchanger and compressor.
5. air-conditioner according to claim 4, is characterized in that, described the second electronic valve is magnetic valve or electric expansion valve.
6. according to the described air-conditioner of any one in claim 1-5, it is characterized in that, also comprise oil eliminator, described oil eliminator is connected between the inlet end of the exhaust outlet of compressor and cross valve; Described supplementary heat exchanger one end connects the exhaust outlet of compressor through described oil eliminator.
7. according to the described air-conditioner of any one in claim 1-5, it is characterized in that, described the first electronic valve is check valve, magnetic valve or electric expansion valve.
8. air-conditioner according to claim 6, is characterized in that, described throttling arrangement is capillary or electric expansion valve.
9. air-conditioner according to claim 1, is characterized in that, described cross valve is magnetic valve.
10. air-conditioner according to claim 1, is characterized in that, between described indoor heat exchanger and throttle part, and is connected with respectively choke valve between indoor heat exchanger and cross valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320312743.3U CN203375761U (en) | 2013-05-31 | 2013-05-31 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320312743.3U CN203375761U (en) | 2013-05-31 | 2013-05-31 | Air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203375761U true CN203375761U (en) | 2014-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320312743.3U Expired - Fee Related CN203375761U (en) | 2013-05-31 | 2013-05-31 | Air conditioner |
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| Country | Link |
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| CN (1) | CN203375761U (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105091258A (en) * | 2014-05-23 | 2015-11-25 | 广东美的暖通设备有限公司 | Air conditioner and cooling control method thereof |
| CN105135553A (en) * | 2015-10-19 | 2015-12-09 | 广东志高暖通设备股份有限公司 | Multiple-on-line system and method for enhancing supercooling degree of multiple-on-line system |
| CN105465916A (en) * | 2015-12-21 | 2016-04-06 | 珠海格力电器股份有限公司 | Air conditioning system |
| CN105650786A (en) * | 2016-02-22 | 2016-06-08 | 青岛海信电子设备股份有限公司 | Air-conditioning system with water circulation and control method of water circulation |
| CN105972933A (en) * | 2016-06-24 | 2016-09-28 | 武汉贝索医疗器械有限公司 | Refrigerating system of blood plasma rapid freezer |
| CN106500392A (en) * | 2016-10-25 | 2017-03-15 | 青岛海信日立空调系统有限公司 | A kind of air conditioner circulating system and its control method and air-conditioning |
| CN107062607A (en) * | 2017-03-23 | 2017-08-18 | 济南明湖制冷空调设备有限公司 | Overlapping air energy liquid heating |
| CN109579156A (en) * | 2018-11-19 | 2019-04-05 | 珠海格力电器股份有限公司 | A kind of limiting temperature refrigeration control system and multi-online air-conditioning system |
| CN109579155A (en) * | 2018-11-19 | 2019-04-05 | 珠海格力电器股份有限公司 | Realize the attemperator and air-conditioning system of multi-online air-conditioning system super low temperature refrigeration |
| CN110486994A (en) * | 2019-09-23 | 2019-11-22 | 宁波奥克斯电气股份有限公司 | One kind preventing back liquid device and air conditioner |
| CN113137771A (en) * | 2020-01-02 | 2021-07-20 | 中车株洲电力机车研究所有限公司 | Cooling system for power electronic equipment |
| CN113503662A (en) * | 2021-07-20 | 2021-10-15 | 美的集团武汉暖通设备有限公司 | Air conditioning system and control method thereof |
| CN114838535A (en) * | 2022-05-18 | 2022-08-02 | 广东开利暖通空调股份有限公司 | Air conditioning system with bypass heating gas-liquid separator and heating method thereof |
| CN115031437A (en) * | 2022-06-14 | 2022-09-09 | 中山市爱美泰电器有限公司 | Ultra-low temperature heat pump system |
| CN116190847A (en) * | 2023-02-22 | 2023-05-30 | 南京艾科美热能科技有限公司 | Phase change temperature control system and control method for energy storage battery |
-
2013
- 2013-05-31 CN CN201320312743.3U patent/CN203375761U/en not_active Expired - Fee Related
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105091258A (en) * | 2014-05-23 | 2015-11-25 | 广东美的暖通设备有限公司 | Air conditioner and cooling control method thereof |
| CN105091258B (en) * | 2014-05-23 | 2018-03-16 | 广东美的暖通设备有限公司 | Air conditioner and its cooling control method |
| CN105135553A (en) * | 2015-10-19 | 2015-12-09 | 广东志高暖通设备股份有限公司 | Multiple-on-line system and method for enhancing supercooling degree of multiple-on-line system |
| CN105465916A (en) * | 2015-12-21 | 2016-04-06 | 珠海格力电器股份有限公司 | Air conditioning system |
| CN105465916B (en) * | 2015-12-21 | 2018-10-09 | 珠海格力电器股份有限公司 | Air-conditioning system |
| CN105650786A (en) * | 2016-02-22 | 2016-06-08 | 青岛海信电子设备股份有限公司 | Air-conditioning system with water circulation and control method of water circulation |
| CN105650786B (en) * | 2016-02-22 | 2018-09-14 | 青岛海信电子设备股份有限公司 | It is a kind of with water cycle air-conditioning system and water cycle control method |
| CN105972933A (en) * | 2016-06-24 | 2016-09-28 | 武汉贝索医疗器械有限公司 | Refrigerating system of blood plasma rapid freezer |
| CN106500392A (en) * | 2016-10-25 | 2017-03-15 | 青岛海信日立空调系统有限公司 | A kind of air conditioner circulating system and its control method and air-conditioning |
| CN107062607A (en) * | 2017-03-23 | 2017-08-18 | 济南明湖制冷空调设备有限公司 | Overlapping air energy liquid heating |
| CN109579156A (en) * | 2018-11-19 | 2019-04-05 | 珠海格力电器股份有限公司 | A kind of limiting temperature refrigeration control system and multi-online air-conditioning system |
| CN109579155A (en) * | 2018-11-19 | 2019-04-05 | 珠海格力电器股份有限公司 | Realize the attemperator and air-conditioning system of multi-online air-conditioning system super low temperature refrigeration |
| CN110486994A (en) * | 2019-09-23 | 2019-11-22 | 宁波奥克斯电气股份有限公司 | One kind preventing back liquid device and air conditioner |
| CN113137771A (en) * | 2020-01-02 | 2021-07-20 | 中车株洲电力机车研究所有限公司 | Cooling system for power electronic equipment |
| CN113137771B (en) * | 2020-01-02 | 2022-10-11 | 中车株洲电力机车研究所有限公司 | Cooling system for power electronic equipment |
| CN113503662A (en) * | 2021-07-20 | 2021-10-15 | 美的集团武汉暖通设备有限公司 | Air conditioning system and control method thereof |
| CN113503662B (en) * | 2021-07-20 | 2022-07-12 | 美的集团武汉暖通设备有限公司 | Air conditioning system and control method thereof |
| CN114838535A (en) * | 2022-05-18 | 2022-08-02 | 广东开利暖通空调股份有限公司 | Air conditioning system with bypass heating gas-liquid separator and heating method thereof |
| CN114838535B (en) * | 2022-05-18 | 2023-09-12 | 广东开利暖通空调股份有限公司 | Air conditioning system with bypass heating gas-liquid separator and heating method thereof |
| CN115031437A (en) * | 2022-06-14 | 2022-09-09 | 中山市爱美泰电器有限公司 | Ultra-low temperature heat pump system |
| CN115031437B (en) * | 2022-06-14 | 2023-09-15 | 中山市爱美泰电器有限公司 | Ultralow temperature heat pump system |
| CN116190847A (en) * | 2023-02-22 | 2023-05-30 | 南京艾科美热能科技有限公司 | Phase change temperature control system and control method for energy storage battery |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140101 |