CN115014012B - Fluorine pump compression refrigeration system and control method thereof - Google Patents
Fluorine pump compression refrigeration system and control method thereof Download PDFInfo
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- CN115014012B CN115014012B CN202210648529.9A CN202210648529A CN115014012B CN 115014012 B CN115014012 B CN 115014012B CN 202210648529 A CN202210648529 A CN 202210648529A CN 115014012 B CN115014012 B CN 115014012B
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- refrigeration system
- fluorine pump
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- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 title claims abstract description 81
- 229910052731 fluorine Inorganic materials 0.000 title claims abstract description 81
- 239000011737 fluorine Substances 0.000 title claims abstract description 81
- 238000005057 refrigeration Methods 0.000 title claims abstract description 36
- 230000006835 compression Effects 0.000 title claims abstract description 23
- 238000007906 compression Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000003921 oil Substances 0.000 claims abstract description 142
- 238000000926 separation method Methods 0.000 claims abstract description 34
- 239000012530 fluid Substances 0.000 claims abstract description 30
- 239000003507 refrigerant Substances 0.000 claims abstract description 28
- 239000010687 lubricating oil Substances 0.000 claims abstract description 18
- 238000001704 evaporation Methods 0.000 claims abstract description 8
- 230000008020 evaporation Effects 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 238000007667 floating Methods 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 230000001276 controlling effect Effects 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 17
- 238000012546 transfer Methods 0.000 abstract description 3
- 101150114468 TUB1 gene Proteins 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- 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
- F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Compressor (AREA)
Abstract
The invention provides a fluorine pump pressure refrigeration system and a control method thereof, wherein the fluorine pump pressure refrigeration system comprises a compression cycle, an evaporation cycle and a fluorine barrel, the compression cycle comprises a compressor, an oil separator and a condenser, the evaporation cycle comprises the fluorine pump, refrigerant fluid in the compression cycle is conveyed into the fluorine barrel, the refrigerant fluid in the fluorine barrel can flow back to an air suction port of the compressor under the action of the fluorine pump, the fluorine pump pressure refrigeration system further comprises a first oil return pipeline and a second oil return pipeline, the first oil return pipeline can convey oil liquid mixed fluid in the fluorine barrel into the oil separator, in the oil separator, the oil liquid separation of the fluid respectively output by the first oil return pipeline and the compressor is respectively and independently realized, and lubricating oil separated in the oil separator can be conveyed to the air suction port of the compressor through the second oil return pipeline. According to the invention, the efficient transfer of the lubricating oil in the fluorine barrel to the compressor is realized, and the running reliability of the compressor is further improved.
Description
Technical Field
The invention belongs to the technical field of air conditioning, and particularly relates to a fluorine pump pressure refrigeration system and a control method thereof.
Background
With the rapid development of the communication industry, the use of high-power density communication equipment such as blade servers, rack servers and the like with small volumes and strong processing capacity makes the heating value of a single cabinet of a data center larger and larger, and the heating value of some cabinets reaches or even exceeds 20kW, so that the conventional air supply mode of a room-level machine room precise air conditioner is difficult to uniformly cool the cabinets, and therefore the requirements on inter-column air conditioners are larger and larger, and meanwhile, the requirements of the data center on the refrigerating capacity and energy conservation of the air conditioning equipment are also higher and larger.
The air conditioner between the columns is generally provided with a compressor and an evaporator, is matched with the outdoor unit in a one-to-one correspondence manner, can also adopt a fluorine barrel liquid pump driving mode, adopts a unified refrigerant low-pressure liquid barrel, and supplies liquid to the indoor unit of the air conditioner between the columns by an independent liquid pump, so that a plurality of air conditioners between the columns can share one large-sized outdoor unit. And the fluorine barrel has gas-liquid separation and low-temperature oil delamination, the lubricating oil (the refrigerating oil of the compressor) is difficult to return to the compressor, and the operation reliability of the compressor is reduced.
Disclosure of Invention
Therefore, the invention provides a fluorine pump pressure refrigeration system and a control method thereof, which can overcome the defects that in the related art, the lubricating oil is difficult to return to a compressor due to gas-liquid separation and low-temperature oil layering phenomena of a fluorine barrel in the fluorine pump pressure refrigeration system, and the operation reliability of the compressor is reduced.
In order to solve the problems, the invention provides a fluorine pump compression refrigeration system, which comprises a compression cycle, an evaporation cycle and a fluorine barrel, wherein the compression cycle comprises a compressor, an oil separator and a condenser, the evaporation cycle comprises a fluorine pump, refrigerant fluid in the compression cycle is conveyed into the fluorine barrel, the refrigerant fluid in the fluorine barrel can flow back to an air suction port of the compressor under the action of the fluorine pump, the fluorine pump further comprises a first oil return pipeline and a second oil return pipeline, the first oil return pipeline can convey oil liquid mixed fluid in the fluorine barrel into the oil separator, in the oil separator, the fluid respectively output by the first oil return pipeline and the fluid respectively output by the compressor are respectively and independently separated, and lubricating oil separated in the oil separator can be conveyed to the air suction port of the compressor through the second oil return pipeline.
In some embodiments, the second oil return line is connected in series with an on-off control valve, and the on-off control valve is configured to be intermittently conducted or cut off.
In some embodiments, the oil separator comprises a first oil separation space communicated with the outlet of the first oil return pipeline and a second oil separation space communicated with the outlet of the compressor, an ejector is arranged on the second oil return pipeline, the first oil separation space is communicated with the injection port of the ejector through a first oil return branch pipe, the second oil separation space is communicated with the inlet of the ejector through a second oil return branch pipe, the injection port of the ejector is communicated with the inlet of the second oil return pipeline, and the second oil separation space is positioned on one side of the on-off control valve away from the air suction port of the compressor.
In some embodiments, the first oil return branch pipe is connected with a first check valve in series.
In some embodiments, the second oil separation space at least partially surrounds the first oil separation space.
In some embodiments, the oil separator includes an annular cylinder forming the first oil separation space and a cylindrical cylinder forming the second oil separation space, the annular cylinder being within the cylindrical cylinder.
In some embodiments, the annular cylinder has heat dissipating fins on its outer peripheral wall.
In some embodiments, the first oil separation space is communicated with the air suction port of the compressor through a first air return pipe, a second one-way valve is connected in series on the first air return pipe, the air outlet of the compressor is communicated with the first air return pipe through a second air return pipe, and a third one-way valve is connected in series on the second air return pipe.
In some embodiments, the inlet of the first oil return pipeline is connected with a floating ball oil suction structure; and/or, the first oil return pipeline is connected with a flow regulating valve in series, and the flow of the flow regulating valve is inversely related to the suction superheat degree of the compressor.
The invention also provides a control method of the fluorine pump pressure refrigeration system, which comprises the following steps:
acquiring the real-time temperature of the external environment where the condenser is located;
when the real-time temperature is lower than the preset temperature, controlling the compressor to stop or keeping a stop state; or,
and controlling the compressor to run when the real-time temperature is not lower than the preset temperature.
According to the fluorine pump compression refrigeration system and the control method thereof, the lubricating oil in the fluorine barrel is conveyed and returned to the compressor through the first oil return pipeline, the oil separator and the second oil return pipeline, so that efficient transfer of the lubricating oil in the fluorine barrel to the compressor is realized, and the running reliability of the compressor is further improved.
Drawings
FIG. 1 is a schematic diagram of a fluorine pump pressure refrigeration system in accordance with an embodiment of the present invention;
FIG. 2 is a schematic diagram of a fluorine pump pumped refrigerant system in accordance with another embodiment of the present invention;
fig. 3 is a schematic structural view of the oil separator of fig. 1.
The reference numerals are expressed as:
1. a fluorine barrel; 21. a compressor; 22. an oil separator; 221. an annular cylinder; 222. a cylindrical barrel; 23. a condenser; 31. a fluorine pump; 32. an evaporator; 100. a first oil return line; 101. a floating ball oil absorption structure; 102. a flow regulating valve; 200. the second oil return pipeline; 201. an on-off control valve; 202. an ejector; 41. a first one-way valve; 42. a second one-way valve; 43. a third one-way valve; 500. a liquid outlet pipeline; 501. a throttling element.
Detailed Description
Referring to fig. 1 to 3 in combination, according to the embodiment of the present invention, there is provided a fluorine pump compression refrigeration system comprising a compression cycle, an evaporation cycle and a fluorine tub 1 (which may also be generally referred to as a low-pressure fluorine tub), the compression cycle comprising a compressor 21, an oil separator 22, and a condenser 23, the evaporation cycle comprising a fluorine pump 31 and an evaporator 32 communicating with an outlet thereof, the refrigerant fluid in the compression cycle being delivered to the fluorine tub 1 through a liquid outlet pipe 500 (on which a throttling element 501 is connected in series), the refrigerant fluid in the fluorine tub 1 being capable of flowing back to an air suction port of the compressor 21 by the action of the fluorine pump 31, and further comprising a first oil return pipe 100 and a second oil return pipe 200, the first oil return pipe 100 being capable of partially delivering an oil mixture fluid in the fluorine tub 1 to the oil separator 22, the first oil return pipe 100 and the fluid respectively outputted from the compressor 21 being independently separated in the oil separator 22, the separated lubricating oil being capable of being delivered to the air suction port of the compressor 21 via the second oil return pipe 200, and simultaneously being capable of understanding that the refrigerant fluid in the oil separator 22 is delivered to the high-pressure evaporator 23 and being delivered to the air suction port of the compressor 21 and further being delivered to the air compressor 32 by the refrigerant fluid in the air return to the air compressor 1 under the action of the fluorine pump 31, and further comprising the refrigerant fluid in the air return to the air compressor 1 being prevented from flowing back to the low-pressure evaporator 32, the refrigerant fluid being further cooled by the refrigerant fluid in the air return to the air compressor 1, and the refrigerant circulation 1 being cooled by the refrigerant fluid in the air return to the evaporator 1, the stable liquid level is beneficial to the oil absorption floating ball in the fluorine barrel to absorb more rich oil liquid. In this technical scheme, through first oil return pipeline 100, oil separator 22 and second oil return pipeline 200 with the lubrication oil in the fluorine bucket 1 carry the backward flow to in the compressor 21, also realized the high-efficient transfer of lubrication oil in the fluorine bucket 1 to in the compressor 21 promptly, and then improved the reliability of compressor operation.
It should be noted that, the fluid conveying power in the first oil return pipeline 100 and the second oil return pipeline 200 is derived from the pressure difference between the air suction port of the compressor 21 and the fluorine barrel 1, and no corresponding driving component is required to be separately arranged, so that the system structure is simplified and the construction cost of the system is reduced.
In some embodiments, an on-off control valve 201 (specifically, a solenoid valve) is connected in series to the second oil return line 200, and the on-off control valve 201 is configured to be intermittently turned on or off. In this way, the on-off control valve 201 can be controlled to be turned on once (i.e. turned on once) at intervals of a preset time period, so that the lubricating oil separated in the oil separator 22 is returned to the compressor 21, and the on-off control valve 201 is not turned on at all times, so that excessive refrigerant fluid and lubricating oil in the oil separator 22 can be effectively prevented from flowing back to the compressor 21, and the refrigeration efficiency is reduced. The preset interval duration of the on-off control valve 201 can be reasonably selected and adjusted according to the oil return amount, and in general, the larger the oil return amount is, the smaller the preset interval duration is, so as to ensure timely oil return.
In some embodiments, the oil separator 22 includes a first oil separation space communicating with the outlet of the first oil return line 100 and a second oil separation space communicating with the outlet of the compressor 21, the second oil return line 200 is provided with an injector 202, the first oil separation space communicates with the injection port of the injector 202 through a first oil return branch pipe, the second oil separation space communicates with the inlet of the injector 202 through a second oil return branch pipe, and the injection port of the injector 202 communicates with the inlet of the second oil return line 200 and is on the side of the on-off control valve 201 remote from the intake port of the compressor 21. According to the technical scheme, the first oil separation space and the second oil separation space are integrated in the oil separator 22, so that heat exchange between refrigerant fluids with different pressure and temperature from two different sources can be realized, the supercooling degree of the refrigerant fluid flowing into the condenser 23 can be improved, more efficient oil-gas separation can be realized, meanwhile, the integrated structure can simplify the system design, the generation of excessive problems of parts is avoided, and a corresponding regenerator is not required to be arranged independently; in addition, in this embodiment, the ejector 202 is used to recover the expansion work of the throttle and the depressurization. Preferably, the first oil return branch pipe is connected in series with a first check valve 41, and the first check valve 41 only allows the fluid to flow from the oil separator 22 toward the injection port side of the injector 202, but does not allow the reverse flow, so that the high-temperature and high-pressure refrigerant inside the oil separator 22 can be prevented from excessively flowing to the suction port of the compressor 21.
Preferably, the second oil separating space at least partially surrounds the first oil separating space, and the surrounding structure design can improve the heat exchange efficiency of the fluid in the two spaces. As a specific implementation, referring to fig. 3, the oil separator 22 includes an annular cylinder 221 forming a first oil separation space and a cylindrical cylinder 222 forming a second oil separation space, the annular cylinder 221 being located within the cylindrical cylinder 222. Furthermore, the outer peripheral wall of the annular cylinder 221 is provided with heat dissipation fins (also called ribs), so that the heat exchange efficiency of the fluid in the two oil separation spaces can be further improved, and the oil separation effect is improved.
Referring to fig. 2, the first oil separating space is communicated with the air suction port of the compressor 21 through the first air return pipe, the first air return pipe is connected in series with the second check valve 42, the air outlet of the compressor 21 is communicated with the first air return pipe through the second air return pipe, and the second air return pipe is connected in series with the third check valve 43, by the arrangement of the second check valve 42 and the third check valve 43, the refrigerant can form a refrigerant heat pipe circulation between the condenser 23 at the outdoor side and the evaporator 32 at the indoor side when the compressor 21 stops running, thereby the fluorine pump compression refrigeration system forms a composite system with two modes of liquid supply refrigeration of the fluorine barrel and the heat pipe refrigeration of the fluorine pump, when the external environment temperature is low (such as winter and transitional season), the low temperature of the external environment is fully utilized as a natural cold source, the cold energy of the external environment is transferred to the indoor side to realize the cooling of the indoor environment and equipment (data center equipment), and the running cost of the system can be greatly reduced.
In some embodiments, the inlet of the first oil return pipeline 100 is connected with a floating ball oil suction structure 101, where the floating ball oil suction structure 101 floats on the lubricating oil layer, so that efficient suction of the upper layer of lubricating oil can be ensured, and as a specific example, the floating ball oil suction structure 101 only needs to be a porous sphere with a density less than that of the lubricating oil, and the porous sphere is connected with the inlet of the first oil return pipeline 100 through a hose.
The first oil return pipeline 100 is connected with a flow regulating valve 102 in series, and the flow of the flow regulating valve 102 is inversely related to the suction superheat degree of the compressor 21, namely, the larger the suction superheat degree is, the smaller the flow of the flow regulating valve 102 is, and conversely, the smaller the suction superheat degree is, the larger the flow of the flow regulating valve 102 is, so that the size of the oil return quantity can be controlled by controlling the opening (namely, the flow) of the flow regulating valve 102, and the distribution of lubricating oil in a system is more reasonable.
According to an embodiment of the present invention, there is also provided a control method of the above-mentioned fluorine pump pressure refrigeration system, including the steps of:
acquiring the real-time temperature of the external environment in which the condenser 23 is located; when the real-time temperature is lower than the preset temperature (particularly can be adjustable within the range of 0-20 ℃), the compressor 21 is controlled to stop or keep the stop state, and the fluorine pump compression refrigeration system operates in a refrigerant heat pipe refrigeration mode; or when the real-time temperature is not lower than the preset temperature, the compressor 21 is controlled to operate, and the fluorine pump pressure refrigeration system operates in a fluorine barrel fluorine pump liquid supply refrigeration mode. According to the technical scheme, when the temperature of the external environment is low (such as winter and transitional seasons), the low temperature of the external environment is fully utilized as a natural cold source, the cold of the external environment is transferred to the indoor side to cool the indoor environment and equipment (data center equipment), the compressor 21 is not required to be started, and the running cost of the system can be greatly reduced.
When the fluorine pump compression refrigeration system operates in the fluorine barrel fluorine pump liquid supply refrigeration mode, the flow direction of the cooling (i.e. the refrigerant) in fig. 1 and 2 is as follows:
the flow direction of the lubricating oil in the liquid supply refrigeration mode of the fluorine barrel fluorine pump is as follows:
when the fluorine pump compression refrigeration system operates in the refrigerant heat pipe refrigeration mode, the flow direction of the refrigerant (i.e., refrigerant) in fig. 2 is:
in addition, in the heat pipe cooling mode of the fluorine pump, since the flow rate and the lift of the fluorine pump 31 are smaller than those of the compressor 21, the opening of the throttling element 501 needs to be kept at the maximum, so that the consumption of too much fluorine pump lift at the throttling element 501 is avoided. In order to reduce the influence of the lubricating oil on the heat exchange efficiency of the heat pipe system of the fluorine pump, in the continuous heat pipe mode of the fluorine pump, when the accumulated running time reaches t1 (which is a preset fixed value), the on-off control valve 201 is opened for t2 time to enable the lubricating oil stored in the oil separator 22 to return to the oil pool of the compressor 21, and after the accumulated running time is counted again.
It will be readily appreciated by those skilled in the art that the above advantageous ways can be freely combined and superimposed without conflict.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention. The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (8)
1. A fluorine pump pressure refrigeration system, characterized by comprising a compression cycle, an evaporation cycle and a fluorine barrel (1), wherein the compression cycle comprises a compressor (21), an oil separator (22) and a condenser (23), the evaporation cycle comprises a fluorine pump (31), refrigerant fluid in the compression cycle is conveyed into the fluorine barrel (1), the refrigerant fluid in the fluorine barrel (1) can flow back to an air suction port of the compressor (21) under the action of the fluorine pump (31), the fluorine pump pressure refrigeration system further comprises a first oil return pipeline (100) and a second oil return pipeline (200), the first oil return pipeline (100) can partially convey oil mixed fluid in the fluorine barrel (1) into the oil separator (22), fluid respectively output by the first oil return pipeline (100) and the compressor (21) is respectively and independently separated, and lubricating oil separated in the oil separator (22) can be conveyed to the compressor (21) through the second oil return pipeline (200); the second oil return pipeline (200) is connected with an on-off control valve (201) in series, and the on-off control valve (201) is configured to be intermittently conducted or cut off; the oil separator (22) comprises a first oil separation space communicated with the outlet of the first oil return pipeline (100) and a second oil separation space communicated with the outlet of the compressor (21), an ejector (202) is arranged on the second oil return pipeline (200), the first oil separation space is communicated with the injection port of the ejector (202) through a first oil return branch pipe, the second oil separation space is communicated with the inlet of the ejector (202) through a second oil return branch pipe, the injection port of the ejector (202) is communicated with the inlet of the second oil return pipeline (200), and the second oil separation space is positioned on one side, away from the air suction port of the compressor (21), of the on-off control valve (201).
2. The fluorine pump pressure refrigeration system according to claim 1, wherein a first check valve (41) is connected in series to the first oil return branch pipe.
3. The fluorine pump pressure refrigeration system of claim 1, wherein the second oil separation space at least partially surrounds the first oil separation space.
4. A fluorine pump pressure refrigeration system as claimed in claim 3, characterized in that the oil separator (22) comprises an annular cylinder (221) forming the first oil separation space and a cylindrical cylinder (222) forming the second oil separation space, the annular cylinder (221) being located within the cylindrical cylinder (222).
5. The fluorine pump pressure refrigeration system of claim 4, wherein the annular cylinder (221) has heat dissipating fins on an outer peripheral wall thereof.
6. The fluorine pump pressure refrigeration system of claim 1, wherein the first oil separation space is communicated with the air suction port of the compressor (21) through a first air return pipe, a second one-way valve (42) is connected in series with the first air return pipe, the air discharge port of the compressor (21) is communicated with the first air return pipe through a second air return pipe, and a third one-way valve (43) is connected in series with the second air return pipe.
7. The fluorine pump compression refrigeration system according to claim 1, characterized in that the inlet of the first return line (100) is connected with a floating ball oil suction structure (101); and/or, the first oil return pipeline (100) is connected with a flow regulating valve (102) in series, and the flow of the flow regulating valve (102) is inversely related to the suction superheat degree of the compressor (21).
8. A method of controlling a fluorine pump compression refrigeration system as set forth in claim 6, comprising the steps of:
acquiring a real-time temperature of an external environment in which the condenser (23) is located;
when the real-time temperature is lower than a preset temperature, controlling the compressor (21) to stop or keeping a stop state; or,
and controlling the operation of the compressor (21) when the real-time temperature is not lower than the preset temperature.
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| CN202210648529.9A CN115014012B (en) | 2022-06-09 | 2022-06-09 | Fluorine pump compression refrigeration system and control method thereof |
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| CN202210648529.9A CN115014012B (en) | 2022-06-09 | 2022-06-09 | Fluorine pump compression refrigeration system and control method thereof |
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| CN115014012B true CN115014012B (en) | 2023-05-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203824178U (en) * | 2014-04-29 | 2014-09-10 | 潍坊三九冷暖设备科技有限公司 | Freon barrel and pump combined unit |
| CN204555461U (en) * | 2015-04-03 | 2015-08-12 | 潍坊三九冷暖设备科技有限公司 | Suction-jet type oil separating device and apply the refrigeration system of this device |
| KR102627101B1 (en) * | 2016-01-05 | 2024-01-22 | 엘지전자 주식회사 | Gas-liquid separator and clothes treatment apparatus having the gas-liquid separator |
| CN108397376B (en) * | 2018-04-08 | 2024-04-05 | 珠海格力电器股份有限公司 | Barrel pump unit, air conditioning system with barrel pump unit and barrel pump unit control method |
| CN112268376A (en) * | 2020-09-15 | 2021-01-26 | 珠海格力电器股份有限公司 | Fluorine pump type heat pipe and jet refrigeration cycle composite system and control method thereof |
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