CN110006193B - Air conditioning system and compressor oil temperature adjusting device used by same - Google Patents
Air conditioning system and compressor oil temperature adjusting device used by same Download PDFInfo
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- CN110006193B CN110006193B CN201910228844.4A CN201910228844A CN110006193B CN 110006193 B CN110006193 B CN 110006193B CN 201910228844 A CN201910228844 A CN 201910228844A CN 110006193 B CN110006193 B CN 110006193B
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- heat exchange
- compressor
- gas
- liquid separator
- oil temperature
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- 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
- F25B31/00—Compressor arrangements
- F25B31/006—Cooling of compressor or motor
- F25B31/008—Cooling of compressor or motor by injecting a liquid
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- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- 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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
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- 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
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- 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
- F25B2500/00—Problems to be solved
- F25B2500/28—Means for preventing liquid refrigerant entering into the compressor
Abstract
The invention provides an air conditioning system and a compressor oil temperature adjusting device used by the same. The air conditioning system and the compressor oil temperature adjusting device used by the air conditioning system are provided with the heat exchange device, the heat exchange device is filled with the adaptive heat exchange medium according to the exhaust temperature of the compressor, the mixture of the compressor is heated or cooled by using the temperature of the heat exchange medium, so that the aim of effectively adjusting the temperature of the mixture is fulfilled, the refrigerant is filled into the heat exchange device, and the liquid refrigerant can be vaporized by using the temperature of the mixture when the mixture is cooled, so that the suction superheat degree of the compressor is increased, and the problem of compressor liquid impact can be prevented on the premise of not increasing the volume of the gas-liquid separator.
Description
Technical Field
The invention relates to the technical field of auxiliary equipment of compressors, in particular to an air conditioning system and a compressor oil temperature adjusting device used by the same.
Background
In order to control the oil temperature of the compressor and prevent the liquid impact of the compressor, the conventional air conditioner generally adopts a method of adjusting the frequency of the compressor and the opening degree of an electronic expansion valve and preventing the oil temperature from being too high through liquid return or frequency reduction, and preheats the bottom of the compressor through an electric heating belt so as to heat a mixture, so that the oil temperature is prevented from being too low, however, the oil temperature is still too high under a high-temperature working condition or high-frequency operation of the compressor, and the oil temperature of the mixture is too low under a low-temperature environment.
Disclosure of Invention
In order to solve the technical problem that the oil temperature of the compressor is too high or too low, an air conditioning system for effectively adjusting the temperature of a mixture and a compressor oil temperature adjusting device used by the air conditioning system are provided.
The utility model provides a compressor oil temperature adjusting device, compressor have the casing, including heat transfer device, heat transfer device set up in on the casing, just heat transfer medium in the heat transfer device with mixture in the casing carries out the heat exchange.
The heat exchange device is provided with a heat exchange inlet and a heat exchange outlet, and heat exchange media enter the heat exchange device from the heat exchange inlet and are discharged from the heat exchange outlet after exchanging heat with the mixture in the shell.
The compressor is applied to an air conditioning system.
The heat exchange medium is a high-temperature refrigerant or a low-temperature refrigerant.
The air conditioning system comprises a first gas-liquid separator, and the high-temperature heat exchange medium is exhaust gas of a compressor or a refrigerant in the first gas-liquid separator.
The heat exchange inlet comprises a first heat exchange inlet and a second heat exchange inlet, a high-temperature pipeline is arranged between the first heat exchange inlet and the exhaust port of the compressor, a first on-off mechanism is arranged on the high-temperature pipeline, a low-temperature pipeline is arranged between the second heat exchange inlet and the first gas-liquid separator, and a second on-off mechanism is arranged on the low-temperature pipeline.
The oil temperature adjusting device of the compressor further comprises a three-position three-way valve, an outlet of the three-position three-way valve is communicated with the heat exchange inlet, and the three-position three-way valve is in a first state communicated with an exhaust port of the compressor, a second state communicated with a liquid outlet of the first gas-liquid separator and a third state in which the heat exchange outlet is in a closed state.
The heat exchange device is arranged on the shell and the first gas-liquid separator in a surrounding mode.
The compressor is provided with a second gas-liquid separator, a gas outlet of the first gas-liquid separator is communicated with an inlet of the second gas-liquid separator, a liquid outlet of the second gas-liquid separator is communicated with the heat exchange inlet, and the heat exchange device is arranged on the shell and the second gas-liquid separator in a surrounding mode.
The heat exchange structure comprises a first section and a second section which are communicated in sequence, the first section is arranged on the shell and the second gas-liquid separator in a surrounding mode, and the second section is arranged on the shell and the second gas-liquid separator in a surrounding mode.
And the liquid refrigerant in the first gas-liquid separator sequentially passes through the second section, the second gas-liquid separator and the first section and then enters the first gas-liquid separator.
The heat exchange device is a micro-channel heat exchanger.
The air outlet of the compressor is provided with a temperature detection mechanism, and the temperature detection mechanism controls the heat exchange device not to exchange heat or controls the high-temperature heat exchange medium to enter the heat exchange device or controls the low-temperature heat exchange medium to enter the heat exchange device.
The compressor oil temperature adjusting device further comprises a three-position three-way valve, a heat exchange outlet of the three-position three-way valve is communicated with the heat exchange inlet, the three-position three-way valve is provided with a first state communicated with an exhaust port of the compressor, a second state communicated with a liquid outlet of the first gas-liquid separator and a third state in which the heat exchange outlet is in a closed state, and the temperature detecting mechanism is electrically connected with the three-position three-way valve.
The heat exchange inlet comprises a first heat exchange inlet and a second heat exchange inlet, a high-temperature pipeline is arranged between the first heat exchange inlet and the exhaust port of the compressor, a first on-off mechanism is arranged on the high-temperature pipeline, a low-temperature pipeline is arranged between the second heat exchange inlet and the liquid outlet of the first gas-liquid separator, a second on-off mechanism is arranged on the low-temperature pipeline, and the temperature detection mechanism is electrically connected with the first on-off mechanism and the second on-off mechanism.
An air conditioning system comprises the compressor oil temperature adjusting device.
The air conditioning system and the compressor oil temperature adjusting device used by the air conditioning system are provided with the heat exchange device, the heat exchange device is filled with the adaptive heat exchange medium according to the exhaust temperature of the compressor, the mixture of the compressor is heated or cooled by using the temperature of the heat exchange medium, so that the aim of effectively adjusting the temperature of the mixture is fulfilled, the refrigerant is filled into the heat exchange device, and the liquid refrigerant can be vaporized by using the temperature of the mixture when the mixture is cooled, so that the suction superheat degree of the compressor is increased, and the problem of compressor liquid impact can be prevented on the premise of not increasing the volume of the gas-liquid separator.
Drawings
Fig. 1 is a schematic structural diagram of a compressor part of an air conditioning system according to an embodiment of the air conditioning system and a compressor oil temperature adjusting device used in the air conditioning system;
FIG. 2 is another schematic diagram of a compressor portion of an air conditioning system and an embodiment of a compressor oil temperature adjustment device used therein;
FIG. 3 is a perspective view of a compressor portion of an air conditioning system in accordance with an embodiment of the air conditioning system and a compressor oil temperature adjustment device used therein;
in the figure:
1. a housing; 2. a heat exchange device; 3. a first gas-liquid separator; 4. a high temperature pipeline; 5. a low temperature pipeline; 6. a second gas-liquid separator; 7. a first stage; 8. a second stage; 10. a three-position three-way valve; 11. a first on-off mechanism; 12. and a second on-off mechanism.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 to 3, the compressor has a housing 1, and includes a heat exchange device 2, the heat exchange device 2 is disposed on the housing 1, and a heat exchange medium in the heat exchange device 2 exchanges heat with a mixture in the housing 1.
The heat exchange device 2 is provided with a heat exchange inlet and a heat exchange outlet, a heat exchange medium enters from the heat exchange inlet, the heat exchange medium is discharged from the heat exchange outlet after the heat exchange of the mixture in the heat exchange device 2 and the shell 1 is carried out, the heat exchange of the mixture in the heat exchange device 2 and the compressor is utilized, the mixture is heated or cooled, the temperature adjustment purpose is effectively and quickly achieved as far as possible, the operation reliability of the compressor is enhanced, and an indoor unit and an outdoor heat exchanger are not shown in the figure 1.
The compressor is applied to an air conditioning system.
The heat exchange medium is a high-temperature refrigerant or a low-temperature refrigerant, namely the high-temperature refrigerant or the low-temperature refrigerant is selected at a corresponding position in a pipeline of the air-conditioning system and sent to the heat exchange device 2 for heat exchange, and the heat-exchanged refrigerant is sent back to the air-conditioning system.
The air conditioning system comprises a first gas-liquid separator 3, the high-temperature heat exchange medium is exhaust gas of a compressor, and the low-temperature heat exchange medium is a liquid refrigerant in the first gas-liquid separator 3.
The heat exchange inlet comprises a first heat exchange inlet and a second heat exchange inlet, a high-temperature pipeline 4 is arranged between the first heat exchange inlet and the exhaust port of the compressor, a first on-off mechanism 11 is arranged on the high-temperature pipeline 4, a low-temperature pipeline 5 is arranged between the second heat exchange inlet and the liquid outlet of the first gas-liquid separator 3, a second on-off mechanism 12 is arranged on the low-temperature pipeline 5, and through opening and closing of the first on-off mechanism 11 and the second on-off mechanism 12, whether a refrigerant enters the heat exchange device 2 or not is controlled to carry out heat exchange, so that the purpose of heating or cooling the mixture or keeping the temperature unchanged is achieved.
The first on-off mechanism 11 and the second on-off mechanism 12 are both solenoid valves.
The oil temperature adjusting device of the compressor further comprises a three-position three-way valve 10, a heat exchange outlet of the three-position three-way valve 10 is communicated with the heat exchange inlet, the three-position three-way valve 10 is in a first state communicated with an exhaust port of the compressor, a second state communicated with a liquid outlet of the first gas-liquid separator 3 and a third state in which the heat exchange outlet is in a closed state, and the purpose of heating or cooling the mixture or keeping the temperature unchanged is achieved by switching the three-position three-way valve 10 among the three states.
The heat exchange device 2 is arranged on the shell 1 and the first gas-liquid separator 3 in a surrounding mode, namely the heat exchange tubes of the heat exchange device 2 can exchange heat with the mixture in the shell 1 and the refrigerant in the first gas-liquid separator 3, so that the heat exchange efficiency can be increased, the vaporization efficiency of the refrigerant in the first gas-liquid separator 3 is increased, and the efficiency of an air conditioning system and a compressor is increased.
The compressor is provided with a second gas-liquid separator 6, a gas outlet of the first gas-liquid separator 3 is communicated with an inlet of the second gas-liquid separator 6, a liquid outlet of the second gas-liquid separator 6 is communicated with a heat exchange inlet, the heat exchange device 2 is arranged on the shell 1 and the second gas-liquid separator 6 in a surrounding mode, namely the second gas-liquid separator 6 is arranged on the compressor, a heat exchange tube of the heat exchange device 2 can exchange heat with a mixture in the shell 1 and a refrigerant in the second gas-liquid separator 6, so that the heat exchange efficiency can be increased, the vaporization efficiency of the refrigerant in the second gas-liquid separator 6 is increased, and the efficiency of the air conditioning system and the efficiency of the compressor are increased.
The heat exchange structure comprises a first section 7 and a second section 8 which are communicated in sequence, the first section 7 is arranged on the shell 1 and the first gas-liquid separator 3 in a surrounding mode, the second section 8 is arranged on the shell 1 and the second gas-liquid separator 6 in a surrounding mode, so that the refrigerant in the heat exchange device 2 can exchange heat with the refrigerant in the first gas-liquid separator 3 and the refrigerant in the second gas-liquid separator 6, and the efficiency is improved.
The low-temperature refrigerant in the first gas-liquid separator 3 sequentially passes through the second section 8, the second gas-liquid separator 6 and the first section 7 and then enters the first gas-liquid separator 3, the vaporized refrigerant is separated by the second gas-liquid separator 6, the amount of the liquid refrigerant entering the first section 7 is increased, and therefore the heat exchange efficiency is increased.
The first on-off mechanism 11 and the second on-off mechanism 12 are both solenoid valves.
The heat exchange device 2 is a micro-channel heat exchanger.
The exhaust port department of compressor is provided with temperature-detecting mechanism, temperature-detecting mechanism control heat transfer device 2 does not carry out the heat transfer or high temperature heat transfer medium gets into heat transfer device 2 or low temperature heat transfer medium gets into heat transfer device 2 judges the oil temperature of mixture through the exhaust temperature who detects the compressor to control heat transfer device 2's operating condition reaches the mesh of rationally adjusting the mixture temperature.
If the compressor runs at a high frequency or the external environment temperature is too high, so that the exhaust temperature of the compressor is too high, namely the oil temperature is higher, a low-temperature heat exchange medium (low-temperature liquid refrigerant) is sent into the heat exchange device 2 for heat exchange, the mixture is cooled, and the purposes of preventing liquid impact and improving the suction superheat degree are achieved;
if the external environment temperature is too low, the exhaust temperature of the compressor is too low, that is, the oil temperature is low, a high-temperature heat exchange medium (high-temperature gaseous refrigerant) is sent into the heat exchange device 2 to exchange heat, and the mixture is heated;
if the compressor operates at a medium frequency, that is, when the oil temperature is at a normal position, the heat exchange medium (refrigerant) is not conveyed into the heat exchange device 2, that is, the heat exchange device 2 does not exchange heat;
the compressor oil temperature adjusting device can adjust in real time according to real-time change of exhaust temperature, and the detection period of the temperature detection mechanism can be set according to actual needs.
The compressor oil temperature adjusting device further comprises a three-position three-way valve 10, a heat exchange outlet of the three-position three-way valve 10 is communicated with the heat exchange inlet, the three-position three-way valve 10 is provided with a first state communicated with an exhaust port of the compressor, a second state communicated with a liquid outlet of the first gas-liquid separator 3 and a third state in which the heat exchange outlet is in a closed state, and the temperature detecting mechanism is electrically connected with the three-position three-way valve 10.
The heat exchange inlet comprises a first heat exchange inlet and a second heat exchange inlet, a high-temperature pipeline 4 is arranged between the first heat exchange inlet and the exhaust port of the compressor, a first on-off mechanism 11 is arranged on the high-temperature pipeline 4, a low-temperature pipeline 5 is arranged between the second heat exchange inlet and the liquid outlet of the first gas-liquid separator 3, a second on-off mechanism 12 is arranged on the low-temperature pipeline 5, and the temperature detection mechanism is electrically connected with the first on-off mechanism 11 and the second on-off mechanism 12.
An air conditioning system comprises the compressor oil temperature adjusting device.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (15)
1. A compressor oil temperature adjusting device, the compressor has casing (1), its characterized in that: including heat transfer device (2), heat transfer device (2) set up in on casing (1), just heat transfer medium in the heat transfer device with mixture in the casing carries out the heat exchange, and air conditioning system includes first vapour and liquid separator (3), the heat transfer import includes first heat transfer import and second heat transfer import, just first heat transfer import with be provided with high temperature pipeline (4) between the gas vent of compressor, be provided with first break-make mechanism (11) on high temperature pipeline (4), second heat transfer import with be provided with low temperature pipeline (5) between first vapour and liquid separator (3), be provided with second break-make mechanism (12) on low temperature pipeline (5).
2. The compressor oil temperature regulation device of claim 1, wherein: the heat exchange device (2) is provided with a heat exchange inlet and a heat exchange outlet, and the heat exchange medium enters the heat exchange device (2) from the heat exchange inlet and exchanges heat with the mixture in the shell (1) and then is discharged from the heat exchange outlet.
3. The compressor oil temperature regulation device of claim 1, wherein: the compressor is applied to an air conditioning system.
4. The compressor oil temperature regulation device of claim 3, wherein: the heat exchange medium is a high-temperature refrigerant or a low-temperature refrigerant.
5. The compressor oil temperature regulation device of claim 3, wherein: the heat exchange medium is exhaust gas of a compressor or a refrigerant in the first gas-liquid separator (3).
6. The compressor oil temperature regulation device of claim 1, wherein: the oil temperature adjusting device of the compressor further comprises a three-position three-way valve (10), an outlet of the three-position three-way valve (10) is communicated with the heat exchange inlet, and the three-position three-way valve (10) has a first state communicated with an exhaust port of the compressor, a second state communicated with a liquid outlet of the first gas-liquid separator (3) and a third state in which the heat exchange outlet is in a closed state.
7. The compressor oil temperature regulation device of claim 1, wherein: the heat exchange device (2) is arranged on the shell (1) and the first gas-liquid separator (3) in a surrounding mode.
8. The compressor oil temperature regulation device of claim 1, wherein: the compressor is provided with a second gas-liquid separator (6), a gas outlet of the first gas-liquid separator (3) is communicated with an inlet of the second gas-liquid separator (6), a liquid outlet of the second gas-liquid separator (6) is communicated with a heat exchange inlet, and the heat exchange device (2) is arranged on the shell (1) and the second gas-liquid separator (6) in a surrounding mode.
9. The compressor oil temperature regulation device of claim 8, wherein: the heat exchange structure comprises a first section (7) and a second section (8) which are communicated in sequence, wherein the first section (7) is arranged on the shell (1) and the first gas-liquid separator (3) in a surrounding mode, and the second section (8) is arranged on the shell (1) and the second gas-liquid separator (6) in a surrounding mode.
10. The compressor oil temperature regulation device of claim 9, wherein: and the liquid refrigerant in the first gas-liquid separator (3) sequentially passes through the second section (8), the second gas-liquid separator (6) and the first section (7) and then enters the first gas-liquid separator (3).
11. The compressor oil temperature regulation device of claim 1, wherein: the heat exchange device (2) is a micro-channel heat exchanger.
12. The compressor oil temperature regulation device of claim 1, wherein: the utility model discloses a heat exchanger, including heat transfer device (2), heat transfer medium gets into heat transfer device (2) or microthermal heat transfer medium gets into heat transfer device (2), the gas vent department of compressor is provided with temperature detection mechanism, temperature detection mechanism control heat transfer device (2) do not carry out heat transfer or high temperature heat transfer medium gets into heat transfer device (2) or microthermal heat transfer medium gets into heat transfer device (2).
13. The compressor oil temperature regulation device of claim 12, wherein: the oil temperature adjusting device of the compressor further comprises a three-position three-way valve (10), an outlet of the three-position three-way valve (10) is communicated with the heat exchange inlet, the three-position three-way valve (10) is provided with a first state communicated with an exhaust port of the compressor, a second state communicated with a liquid outlet of the first gas-liquid separator (3) and a third state in which the heat exchange outlet is in a closed state, and the temperature detecting mechanism is electrically connected with the three-position three-way valve (10).
14. The compressor oil temperature regulation device of claim 12, wherein: the heat exchange inlet comprises a first heat exchange inlet and a second heat exchange inlet, a high-temperature pipeline (4) is arranged between the first heat exchange inlet and an exhaust port of the compressor, a first on-off mechanism (11) is arranged on the high-temperature pipeline (4), a low-temperature pipeline (5) is arranged between the second heat exchange inlet and a liquid outlet of the first gas-liquid separator (3), a second on-off mechanism (12) is arranged on the low-temperature pipeline (5), and the temperature detection mechanism is electrically connected with the first on-off mechanism (11) and the second on-off mechanism (12).
15. An air conditioning system characterized by: including the compressor oil temperature regulation device of any one of claims 1-14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910228844.4A CN110006193B (en) | 2019-03-25 | 2019-03-25 | Air conditioning system and compressor oil temperature adjusting device used by same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910228844.4A CN110006193B (en) | 2019-03-25 | 2019-03-25 | Air conditioning system and compressor oil temperature adjusting device used by same |
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| CN110006193A CN110006193A (en) | 2019-07-12 |
| CN110006193B true CN110006193B (en) | 2020-05-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110440424A (en) * | 2019-07-26 | 2019-11-12 | 珠海格力电器股份有限公司 | A kind of anti-return hydraulic control device, method and air-conditioning equipment suitable for various working |
| CN117469822B (en) * | 2023-12-27 | 2024-03-19 | 珠海格力电器股份有限公司 | Air conditioning unit, control method and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100102855A (en) * | 2009-03-12 | 2010-09-27 | 백현정 | Compressor system |
| CN103075324B (en) * | 2012-03-21 | 2015-06-17 | 宁波奥克斯电气有限公司 | Control method of oil temperature of compressor |
| CN104481843A (en) * | 2014-10-15 | 2015-04-01 | 上海约卓环保科技有限公司 | Refrigeration compressor |
| KR101745772B1 (en) * | 2015-02-06 | 2017-06-09 | 엘지전자 주식회사 | Air conditioner |
| CN105627614B (en) * | 2016-01-25 | 2018-01-09 | 珠海格力电器股份有限公司 | Refrigeration unit and its control method and control system |
| CN106225291B (en) * | 2016-07-20 | 2018-11-20 | 海信（山东）空调有限公司 | Use the air-conditioner control system and air-conditioning of injector |
| CN106766431B (en) * | 2017-03-22 | 2023-09-05 | 珠海格力电器股份有限公司 | Oil content system and air conditioning system |
| CN107120305B (en) * | 2017-06-16 | 2023-11-24 | 珠海格力电器股份有限公司 | Air conditioning equipment, oil cooling system and control method of oil cooling system |
| CN207797440U (en) * | 2017-12-07 | 2018-08-31 | 福建雪人股份有限公司 | A kind of Condensing units with oil cooler |
| CN109186143B (en) * | 2018-09-29 | 2023-11-28 | 珠海格力电器股份有限公司 | Oil cooling device and control method thereof |
| CN108954996A (en) * | 2018-09-30 | 2018-12-07 | 珠海格力电器股份有限公司 | Oil separating device and heat-exchange system equipped with it |
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