CN105805986A - Heat pump system with auxiliary oil return - Google Patents
Heat pump system with auxiliary oil return Download PDFInfo
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- CN105805986A CN105805986A CN201610290557.2A CN201610290557A CN105805986A CN 105805986 A CN105805986 A CN 105805986A CN 201610290557 A CN201610290557 A CN 201610290557A CN 105805986 A CN105805986 A CN 105805986A
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- compressor
- oil
- gas
- oil return
- return
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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
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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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
- F25B31/002—Lubrication
- F25B31/004—Lubrication oil recirculating arrangements
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- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention provides a heat pump system with auxiliary oil return. The system comprises a compressor (1), a gas cooler (2), a throttling device (3), an evaporator (4) and a pressure guiding pipeline (7), wherein a gas-liquid separator (5) is connected between the evaporator (4) and the compressor (1); an oil return pipeline (6) for communicating the gas-liquid separator and the compressor is arranged between the gas-liquid separator (5) and the compressor (1); and the pressure guiding pipeline is used for guiding the pressure of the high pressure exhaust end of the compressor (1) to an oil return side connected with the compressor (1) through the oil return pipeline (6) so as to increase the pressure of the oil return side and maintain the oil return. The system provided by the invention has the advantages that the pressure of the high pressure exhaust end of the compressor is guided to the oil return side, so that the pressure of the oil return side of the heat pump system can be effectively increased, the oil in the gas can effectively, normally and continuously flow back to the compressor, the overall energy efficiency ratio of a heat pump unit cannot be reduced and the performance is not influenced at the same time.
Description
Technical field
The invention belongs to heat energy conversion and utilize technical field, being specifically related to a kind of heat pump with auxiliary oil return.
Background technology
Heat pump of the prior art generally includes compressor, condenser, expansion valve and vaporizer, refrigerant medium forms the gas of High Temperature High Pressure after compressor compresses, condense heat release through condenser and reject heat to need the environment (indoor environment in such as winter) of heat, cold-producing medium after condensation heat release lowers the temperature into high pressure low temperature or high-temperature gas, carry out reducing pressure by regulating flow then through expansion valve or choke valve and form the liquid of low-pressure low-temperature, then enter back into evaporation endothermic in vaporizer and form low-pressure low-temperature or high-temperature gas, and then entrance compressor is compressed again, complete the process of heat pump cycle.Between vaporizer and compressor, generally it is connected to gas-liquid separator so that the refrigerant gas after evaporation to be dried, enter back into the suction end of compressor, playing the cold-producing medium ensureing to enter in compresser cylinder is that gaseous state is to prevent the generation of the unfavorable conditions such as liquid hammer, the liquid oil gone out through gas-liquid separator separates can return to compressor smoothly to prevent compressor oil starvation from causing that compressor seizes and even burning, thus affecting operational efficiency and the service life of compressor.
Prior art generally connects an oil return pipe so that oil is transmitted back to compressor in the container bottom of described gas-liquid separator, but the generation that this kind of scheme often exists pressure in gas-liquid separator and the differing pressure too small (< 0.1MPa) of compressor air suction end and cause the oil in gas-liquid separator to cannot be introduced into the situation in compressor, and the versions such as plate type heat exchanger are more and more selected due to regenerator, cause the resistance within regenerator to diminish so that gas-liquid separator outlet pressure and the pressure differential of suction port of compressor is too little affects the normal oil return of compressor；If adopting the mode that regenerator increases pressure drop (i.e. resistance) to make oil normal reflow to compressor, can cause that again the complete machine Energy Efficiency Ratio (COP) of whole heat pump (or cooling cycle system) declines to a great extent.
Due to heat pump of the prior art exist the oil in edema caused by disorder of QI cannot be back in compressor normally, constantly thus affect the normal operational efficiency of compressor and service life or system can technical problem that normally oil return but causes complete machine Energy Efficiency Ratio to decline, therefore research design of the present invention goes out a kind of heat pump with auxiliary oil return.
Summary of the invention
Therefore; the technical problem to be solved in the present invention be in that the oil overcoming heat pump of the prior art to exist in edema caused by disorder of QI cannot be back in compressor normal continuous or can defect that normally oil return but causes complete machine Energy Efficiency Ratio to decline, thus providing a kind of heat pump with auxiliary oil return.
The present invention provides a kind of heat pump with auxiliary oil return, including compressor, gas cooler, throttling arrangement and vaporizer, it is also associated with gas-liquid separator between described vaporizer and described compressor, between described gas-liquid separator with described compressor, in the way of being connected both this, it is additionally provided with return line, also includes introducing the pressure of the high pressure gas end of described compressor to the oil return side being connected by described return line with described compressor to increase its pressure and to maintain the impulse pipeline of oil return.
Preferably, described oil return side is the oil storage end bottom described gas-liquid separator, and described impulse pipeline one end is communicated to the high pressure gas end of described compressor, and the other end is communicated to described gas-liquid separator inner space and is positioned at the position of more than oil level.
Preferably, described return line is additionally provided with control this pipeline break-make and regulate the first electromagnetic valve of return flow, and/or, described impulse pipeline is additionally provided with to control the second electromagnetic valve of this pipeline.
Preferably, being provided with oil vessel on described return line, described oil return side is described oil vessel, and one end of described impulse pipeline is communicated to the high pressure gas end of described compressor, the other end is communicated to the inner space of described oil vessel.
Preferably, described oil vessel arranges the lower section being positioned at described gas-liquid separator, and described return line includes the first return line connecting between the upper end of described oil vessel and the bottom of described gas-liquid separator.
Preferably, described return line also includes connecting the second return line between described oil vessel right-hand member and the suction end of described compressor.
Preferably, described oil vessel left end is connected with the high pressure gas end of described compressor by described impulse pipeline.
Preferably, described first return line is additionally provided with control this pipeline break-make and regulate the 3rd electromagnetic valve of return flow, and/or, described second return line is additionally provided with control this pipeline break-make and regulate the 4th electromagnetic valve of oil flow in this pipeline, and/or, described impulse pipeline is provided with to control the 5th electromagnetic valve of this pipeline break-make.
Preferably, it is additionally provided with the first fuel level sensor inside described gas-liquid separator.
Preferably, it is additionally provided with the second fuel level sensor inside described oil vessel.
A kind of heat pump with auxiliary oil return provided by the invention has the advantages that
1. by a kind of heat pump with auxiliary oil return provided by the invention, can effectively increase the pressure of heat pump oil return side, the oil in edema caused by disorder of QI is effectively made normally and to be constantly back in compressor, while allowing oil to normally be recycled, compressor can also be maintained work normally, improve compressor service life；Realize normal oil return without the mode of the pressure drop (or pressure drag) by increasing regenerator simultaneously, and then ensure that the complete machine Energy Efficiency Ratio of source pump is unlikely to decline.
2. each pipeline is controlled by mode effectively that can pass through to arrange electromagnetic valve on each pipeline corresponding, the oil level of oil return side is detected by the mode simultaneously passing through to arrange fuel level sensor, and then by the oil level detected, the electromagnetic valve of return line is controlled, thus realizing the function that Intelligence Feedback effectively controls；
3. simple, convenient, control device is accurate and effective.
Accompanying drawing explanation
Fig. 1 is the structural representation of the heat pump embodiment one with auxiliary oil return of the present invention；
Fig. 2 is the structural representation of the heat pump embodiment two with auxiliary oil return of the present invention.
In figure, accompanying drawing labelling is expressed as:
1-compressor, 2-gas cooler, 3-throttling arrangement, 4-vaporizer, 5-gas-liquid separator, 6-return line, 61-the first return line, 62-the second return line, 7-impulse pipeline, 81-the first electromagnetic valve, 82-the second electromagnetic valve, 83-the 3rd electromagnetic valve, 84-the 4th electromagnetic valve, 85-the 5th electromagnetic valve, 9-oil vessel, 10-regenerator.
Detailed description of the invention
As shown in Figure 1-2, the present invention provides a kind of heat pump with auxiliary oil return, including compressor 1, gas cooler 2, throttling arrangement 3 and vaporizer 4, it is also associated with gas-liquid separator 5 between the gas exhaust piping and the suction line of described compressor 1 of described vaporizer 4, in the way of being connected both this, return line 6 it is additionally provided with between the bottom of described gas-liquid separator 5 with suction end or the oil revolving end of described compressor 1, the pressure also including the high pressure gas end by described compressor 1 is introduced to the oil return side being connected by described return line 6 with described compressor 1 to increase its pressure and to maintain the impulse pipeline 7 of oil return.
The heat pump with auxiliary oil return of the present invention, by arranging return line between gas-liquid separator with compressor in the way of the two being connected, the oil of the deposition in gas-liquid separator can be effectively made to be delivered in described compressor by connection, thus to compressor plays lubrication, simultaneously by the pressure of compressor high pressure gas end is introduced oil return side, can effectively increase the pressure of heat pump oil return side, the oil in edema caused by disorder of QI is effectively made normally and to be constantly back in compressor, while allowing oil to normally be recycled, compressor can also be maintained work normally, improve its service life；Realize normal oil return without the mode of the pressure drop (or pressure drag) by increasing regenerator simultaneously, and then ensure that the complete machine Energy Efficiency Ratio of source pump is unlikely to decline.
nullIn prior art, often there is its return pressure and compressor air suction end pressure difference too small (< 0.1MPa) and oil in the gas-liquid separator that causes cannot be introduced in compressor in the process of oil return in gas-liquid separator，And the versions such as plate type heat exchanger are more and more selected due to regenerator，Cause that the resistance of regenerator end is too little，The pressure differential more making pressure that gas-liquid separator exports and suction port of compressor becomes too little，From Fig. 1，The pressure C=of the pressure > oil return side of compressor high pressure gas end A or the pressure B of summary > compressor low pressure air suction end，(in experimentation, the pressure at A place records preferably concrete numerical value is 11MPa，It is 3.5MPa that the pressure at B place records preferably concrete numerical value，It is 3.5MPa that the pressure at C place records preferably concrete numerical value，)，Now the pressure C of oil return side is equal with the pressure B of compressor low pressure air suction end，Therebetween pressure reduction cannot be formed，Cause that oil return cannot continue again，Compressor can not be maintained work normally，Reduce service life，And the present invention has exactly done technological improvement herein，The high pressure A of compressor high pressure gas end is incorporated into oil return side，Promote the pressure of oil return side，The pressure making oil return side is still high than the pressure B of compressor low pressure air suction end，Just the oil that can make oil return side can normally and constantly be back in compressor，While allowing oil to normally be recycled、Compressor can also be maintained work normally，Improve its service life.
As shown in Figure 1, embodiments of the present invention one, it is preferable that described oil return side is the oil storage end bottom described gas-liquid separator 5, described impulse pipeline 7 one end is communicated to the high pressure gas end of described compressor 1, and the other end is communicated to described gas-liquid separator 5 inner space and is positioned at the position of more than oil level.To select the oil storage end bottom described gas-liquid separator be oil return side is the preferred embodiment of the present invention, so can by the high-pressure A of compressor high pressure gas end being introduced the position being positioned at more than oil level to gas-liquid separator 5 inner space, to improve the pressure of this oil level space above C, so that the oil in edema caused by disorder of QI can normally and constantly be back in compressor, compressor to be played the effects such as lubrication, cooling.
Preferably, described return line 6 is additionally provided with control this pipeline break-make and regulate the first electromagnetic valve 81 of return flow, and/or, described impulse pipeline 7 is additionally provided with control the second electromagnetic valve 82 of this pipeline.By arranging the mode of electromagnetic valve on this return line, the break-make of oil in this return line can be efficiently controlled and regulate the size of return flow, play the effect effectively to its control, by being also provided with the mode of electromagnetic valve on this impulse pipeline, big and the break-make of pressure in this impulse pipeline can be efficiently controlled, it is delivered to the generation of the abnormal conditions such as edema caused by disorder of QI end after preventing compressor start between high pressure, it is carried out safe and effective control.
As shown in Figure 2, embodiments of the present invention two, preferably, described return line 6 is provided with oil vessel 9, described oil return side is described oil vessel 9, and one end of described impulse pipeline 7 is communicated to the high pressure gas end of described compressor 1, the other end is communicated to the inner space of described oil vessel 9.Select to set up an oil vessel on return line and make described oil vessel to be oil return side be the second preferred implementation of the present invention, first the oil in edema caused by disorder of QI is guided in oil vessel, again oil is back in compressor again through oil vessel, and the inner space of oil vessel it is communicated to by impulse pipeline one end connection high pressure gas end of compressor, the other end, to improve the pressure of the inner space C of this oil vessel, so that the oil in oil vessel can normally and constantly be back in compressor, compressor to be played the effects such as lubrication, cooling.
Preferably, described oil vessel 9 arranges the lower section being positioned at described gas-liquid separator 5, and described return line 6 includes the first return line 61 connecting between upper end and the bottom of described gas-liquid separator 5 of described oil vessel 9.This be oil vessel be preferably provided with position, it is positioned in the lower section of gas-liquid separator, and can effectively make the oil in gas-liquid separator be back in oil vessel by the first loop between upper end and the bottom of described gas-liquid separator of described oil vessel and reduce flow process and the length of backflow.
Preferably, described return line 6 also includes the second return line 62 of connecting between described oil vessel 9 right-hand member and the suction end of described compressor 1.So can be connected internal for described oil vessel via the suction end of the second return line with described compressor 1 by its right-hand member, it is achieved the oil in oil vessel is back to the purpose in compressor and effect.
Preferably, described oil vessel 9 left end is connected by the high pressure gas end of described impulse pipeline 7 with described compressor 1.So the high-pressure at compressor high pressure gas end A place can be introduced to the inner space of oil vessel by oil vessel left end, thus promoting the pressure of oil vessel inner space, enable its pressure to be consistently higher than the pressure of suction end of compressor, it is possible to compressor air suction end is formed continue, continuous print oil return.
Preferably, described first return line 61 is additionally provided with control this pipeline break-make and regulate the 3rd electromagnetic valve 83 of return flow, and/or, described second return line 62 is additionally provided with control this pipeline break-make and regulate the 4th electromagnetic valve 84 of oil flow in this pipeline, and/or, described impulse pipeline 7 is provided with to control the 5th electromagnetic valve 85 of this pipeline break-make.Can effectively break-make and return flow to the first return line be controlled by arranging the mode of the 3rd electromagnetic valve on the first return line, can effectively break-make and return flow to the second return line be controlled by arranging the mode of the 4th electromagnetic valve at the second return line, can effectively break-make and return flow to the 3rd return line be controlled by arranging the mode of the 5th electromagnetic valve at the 3rd return line, thus realizing the effective control action to above-mentioned 3 loops.
Preferably, described gas-liquid separator 5 is internal is additionally provided with the first fuel level sensor (not shown).In real time the oil level within edema caused by disorder of QI can be detected by arranging the mode of the first fuel level sensor inside gas-liquid separator, this is applicable to the first embodiment, when oil level exceedes set preset value, illustrate that the oil level in now edema caused by disorder of QI is too high and lubricant in compressor is very few, and oil return process does not normally carry out, then now need to open the electromagnetic valve being arranged on impulse pipeline to introduce in edema caused by disorder of QI by pressure, and open the electromagnetic valve being arranged on return line so that oil can successfully be back to compressor bottom edema caused by disorder of QI.
Preferably, the refrigerant line of described gas-liquid separator 5 refrigerant line with described gas cooler 2 is provided with the regenerator carrying out mutual heat exchange in order to pipeline both this.By arranging the degree of superheat that the mode of regenerator can be lifted in compressor effectively, the COP value of enthalpy and whole system to improve cold-producing medium.
Preferably, described oil vessel 9 is internal is additionally provided with the second fuel level sensor (not shown).In real time the oil level within oil vessel can be detected by arranging the mode of the second fuel level sensor inside oil vessel, this is applicable to the second embodiment, when oil level exceedes set preset value, illustrate that now oil level is too high and lubricant in compressor is very few in oil vessel 9, i.e. oil return process does not normally carry out, then now need to open the electromagnetic valve being arranged on impulse pipeline to introduce in oil vessel by pressure, and open the electromagnetic valve being arranged on the second return line, allow oil to successfully be back to compressor bottom oil vessel.
The concrete operations principle of this kind of preferred implementation and operating process are as follows:
1. time flat need not oil return time (being learnt by fuel level sensor compressor within and the second fuel level sensor detection oil level), the 4th electromagnetic valve 84 and the 5th electromagnetic valve 85 being arranged on impulse pipeline 7 that are arranged on the second return line 62 are closed, the 3rd electromagnetic valve 83 being arranged on the first return line 61 is opened, make oil from continuing to flow into bottom edema caused by disorder of QI to this oil vessel, carry out the deposit of oil for compressor oil return；
2. (detect oil level by the second fuel level sensor to learn) when needs carry out oil return to compressor, the 3rd electromagnetic valve 83 being arranged on the first return line 61 cuts out, the 4th electromagnetic valve 84 and the 5th electromagnetic valve 85 being arranged on impulse pipeline 7 that are arranged on the second return line 62 are opened, oil is continued to flow into this compressor from oil vessel, compressor is made to obtain sufficient oil, to complete the effects such as lubrication, cooling, improve its work efficiency and service life.
Preferably, described heat pump is air source heat pump system, and the cold-producing medium in described refrigerant pipe is CO2.This is the optimal way of heat pump of technical solution of the present invention, adopts air source as thermal source to carrying out the purpose that draw heat reaches to heat in air source, and selection cold-producing medium is CO2The pollution to air can be reduced better, cleaning, sustainable, high financial profit.
Those skilled in the art will readily understand, under the premise do not conflicted, above-mentioned each advantageous manner can freely combine, superposition.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within protection scope of the present invention.The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the technology of the present invention principle; can also making some improvement and modification, these improve and modification also should be regarded as protection scope of the present invention.
Claims (10)
1. a heat pump with auxiliary oil return, including compressor (1), gas cooler (2), throttling arrangement (3) and vaporizer (4), it is characterized in that: between described vaporizer (4) and described compressor (1), be also associated with gas-liquid separator (5), in the way of being connected both this, return line (6) it is additionally provided with between described gas-liquid separator (5) with described compressor (1), the pressure also including the high pressure gas end by described compressor (1) is introduced to the oil return side being connected by described return line (6) with described compressor (1) to increase its pressure and to maintain the impulse pipeline (7) of oil return.
2. a kind of heat pump with auxiliary oil return according to claim 1, it is characterized in that: described oil return side is the oil storage end of described gas-liquid separator (5) bottom, described impulse pipeline (7) one end is communicated to the high pressure gas end of described compressor (1), and the other end is communicated to described gas-liquid separator (5) inner space and is positioned at the position of more than oil level.
3. a kind of heat pump with auxiliary oil return according to claim 2, it is characterized in that: be additionally provided with control this pipeline break-make and regulate first electromagnetic valve (81) of return flow on described return line (6), and/or, described impulse pipeline (7) is additionally provided with to control second electromagnetic valve (82) of this pipeline.
4. a kind of heat pump with auxiliary oil return according to claim 1, it is characterized in that: on described return line (6), be provided with oil vessel (9), described oil return side is described oil vessel (9), and one end of described impulse pipeline (7) is communicated to the high pressure gas end of described compressor (1), the other end is communicated to the inner space of described oil vessel (9).
5. a kind of heat pump with auxiliary oil return according to claim 4, it is characterized in that: described oil vessel (9) arranges the lower section being positioned at described gas-liquid separator (5), and described return line (6) includes the first return line (61) connecting between the upper end of described oil vessel (9) and the bottom of described gas-liquid separator (5).
6. according to a kind of heat pump with auxiliary oil return one of claim 4-5 Suo Shu, it is characterised in that: described return line (6) also includes the second return line (62) connecting between the suction end of described oil vessel (9) right-hand member and described compressor (1).
7. according to a kind of heat pump with auxiliary oil return one of claim 4-6 Suo Shu, it is characterised in that: described oil vessel (9) left end is connected with the high pressure gas end of described compressor (1) by described impulse pipeline (7).
8. according to a kind of heat pump with auxiliary oil return one of claim 4-7 Suo Shu, it is characterized in that: be additionally provided with control this pipeline break-make and regulate the 3rd electromagnetic valve (83) of return flow on described first return line (61), and/or, described second return line (62) is additionally provided with control this pipeline break-make and regulate the 4th electromagnetic valve (84) of oil flow in this pipeline, and/or, described impulse pipeline (7) is provided with to control the 5th electromagnetic valve (85) of this pipeline break-make.
9. according to a kind of heat pump with auxiliary oil return one of claim 2-3 Suo Shu, it is characterised in that: described gas-liquid separator (5) is internal is additionally provided with the first fuel level sensor.
10. according to a kind of heat pump with auxiliary oil return one of claim 4-8 Suo Shu, it is characterised in that: described oil vessel (9) is internal is additionally provided with the second fuel level sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610290557.2A CN105805986A (en) | 2016-04-27 | 2016-04-27 | Heat pump system with auxiliary oil return |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610290557.2A CN105805986A (en) | 2016-04-27 | 2016-04-27 | Heat pump system with auxiliary oil return |
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| CN105805986A true CN105805986A (en) | 2016-07-27 |
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| CN201610290557.2A Pending CN105805986A (en) | 2016-04-27 | 2016-04-27 | Heat pump system with auxiliary oil return |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560238A (en) * | 2017-10-18 | 2018-01-09 | 伊马莱富（北京）制药系统有限公司 | The oil return apparatus and oil return method of a kind of refrigeration system |
| CN110088540A (en) * | 2016-12-21 | 2019-08-02 | 三菱电机株式会社 | Refrigerating circulatory device |
| CN110762015A (en) * | 2019-10-18 | 2020-02-07 | 珠海凌达压缩机有限公司 | Air suction oil return assembly, liquid distributor and compressor comprising same |
| CN115014010A (en) * | 2022-06-09 | 2022-09-06 | 珠海格力电器股份有限公司 | Compression refrigeration system for fluorine pump |
| CN116378931A (en) * | 2023-04-20 | 2023-07-04 | 氢合科技(广州)有限公司 | Helium compressor system with buffer tank and throttling element |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07305921A (en) * | 1994-03-15 | 1995-11-21 | Mitsubishi Electric Corp | Air conditioner |
| JPH08189732A (en) * | 1995-01-09 | 1996-07-23 | Mitsubishi Heavy Ind Ltd | Refrigeration cycle |
| JP2007113815A (en) * | 2005-10-19 | 2007-05-10 | Matsushita Electric Ind Co Ltd | Refrigerating cycle device |
| US20090133435A1 (en) * | 2005-10-06 | 2009-05-28 | Mitsubishi Electric Corporation | Refrigerating Air-Conditioning Apparatus |
| CN201926222U (en) * | 2010-12-28 | 2011-08-10 | 珠海格力电器股份有限公司 | Air conditioner and low-pressure oil storage and refrigerant circulation accelerating device thereof |
| CN102365508A (en) * | 2009-03-31 | 2012-02-29 | 三菱电机株式会社 | Refrigeration device |
| WO2012159475A1 (en) * | 2011-05-24 | 2012-11-29 | 宁波奥克斯电气有限公司 | Heat-pump, screw-compression, multi-connected central air-conditioning apparatus |
| CN104457030A (en) * | 2013-09-13 | 2015-03-25 | 约克广州空调冷冻设备有限公司 | Oil way system for parallel-connection type air conditioning unit and parallel-connection type air conditioning unit |
| CN205014719U (en) * | 2015-09-02 | 2016-02-03 | Tcl空调器(中山)有限公司 | Oil -gas separation device and refrigeration plant |
| CN105371532A (en) * | 2015-12-24 | 2016-03-02 | 重庆美的通用制冷设备有限公司 | Air conditioner |
| CN205580032U (en) * | 2016-04-27 | 2016-09-14 | 燕园德普科技（北京）有限公司 | Heat pump system with supplementary oil return |
-
2016
- 2016-04-27 CN CN201610290557.2A patent/CN105805986A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07305921A (en) * | 1994-03-15 | 1995-11-21 | Mitsubishi Electric Corp | Air conditioner |
| JPH08189732A (en) * | 1995-01-09 | 1996-07-23 | Mitsubishi Heavy Ind Ltd | Refrigeration cycle |
| US20090133435A1 (en) * | 2005-10-06 | 2009-05-28 | Mitsubishi Electric Corporation | Refrigerating Air-Conditioning Apparatus |
| JP2007113815A (en) * | 2005-10-19 | 2007-05-10 | Matsushita Electric Ind Co Ltd | Refrigerating cycle device |
| CN102365508A (en) * | 2009-03-31 | 2012-02-29 | 三菱电机株式会社 | Refrigeration device |
| CN201926222U (en) * | 2010-12-28 | 2011-08-10 | 珠海格力电器股份有限公司 | Air conditioner and low-pressure oil storage and refrigerant circulation accelerating device thereof |
| WO2012159475A1 (en) * | 2011-05-24 | 2012-11-29 | 宁波奥克斯电气有限公司 | Heat-pump, screw-compression, multi-connected central air-conditioning apparatus |
| CN104457030A (en) * | 2013-09-13 | 2015-03-25 | 约克广州空调冷冻设备有限公司 | Oil way system for parallel-connection type air conditioning unit and parallel-connection type air conditioning unit |
| CN205014719U (en) * | 2015-09-02 | 2016-02-03 | Tcl空调器(中山)有限公司 | Oil -gas separation device and refrigeration plant |
| CN105371532A (en) * | 2015-12-24 | 2016-03-02 | 重庆美的通用制冷设备有限公司 | Air conditioner |
| CN205580032U (en) * | 2016-04-27 | 2016-09-14 | 燕园德普科技（北京）有限公司 | Heat pump system with supplementary oil return |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110088540A (en) * | 2016-12-21 | 2019-08-02 | 三菱电机株式会社 | Refrigerating circulatory device |
| CN110088540B (en) * | 2016-12-21 | 2021-08-17 | 三菱电机株式会社 | Refrigeration cycle device |
| CN107560238A (en) * | 2017-10-18 | 2018-01-09 | 伊马莱富（北京）制药系统有限公司 | The oil return apparatus and oil return method of a kind of refrigeration system |
| CN107560238B (en) * | 2017-10-18 | 2023-07-04 | 伊马莱富（北京）制药系统有限公司 | Oil return device and oil return method of refrigeration system |
| CN110762015A (en) * | 2019-10-18 | 2020-02-07 | 珠海凌达压缩机有限公司 | Air suction oil return assembly, liquid distributor and compressor comprising same |
| CN115014010A (en) * | 2022-06-09 | 2022-09-06 | 珠海格力电器股份有限公司 | Compression refrigeration system for fluorine pump |
| CN116378931A (en) * | 2023-04-20 | 2023-07-04 | 氢合科技(广州)有限公司 | Helium compressor system with buffer tank and throttling element |
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