CN105805970A - Heat pump unit and gas-liquid two-phase uniform distribution method - Google Patents
Heat pump unit and gas-liquid two-phase uniform distribution method Download PDFInfo
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- CN105805970A CN105805970A CN201610161499.3A CN201610161499A CN105805970A CN 105805970 A CN105805970 A CN 105805970A CN 201610161499 A CN201610161499 A CN 201610161499A CN 105805970 A CN105805970 A CN 105805970A
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- phase flow
- compressor
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- oil
- 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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
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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
- F25B41/40—Fluid line arrangements
Abstract
The invention relates to the technical field of heat pump units, in particular to a heat pump unit and a gas-liquid two-phase uniform distribution method. The heat pump unit comprises a compressor, an oil separator communicating with the compressor, a condenser communicating with the oil separator, and a parallel two-phase flow distribution type evaporator communicating with the compressor; a first ball valve, a drying filter, an electronic expansion valve and a second ball valve are sequentially arranged between the condenser and the parallel two-phase flow distribution type evaporator to form a first loop; an oil return angular ball valve and an oil return filter are sequentially arranged between the oil separator and the compressor to form a second loop; an oil return electromagnetic valve, a jet pump and a compressor input end ball valve are sequentially arranged between the parallel two-phase flow distribution type evaporator and the compressor; and the jet pump communicates with the condenser to form a third loop. The heat pump unit has the beneficial effect that uniform distribution of expansion valve throttling gas-liquid two-phase refrigerants can be achieved.
Description
Technical field
The present invention relates to source pump technical field, particularly relate to a kind of source pump and gas-liquid two-phase uniform distribution method.
Background technology
Along with the raising of social fast development and people's living standard, the energy consumption of air conditioning system ratio in entire society lives is increasing, sometimes even becomes the major part of enterprise's production cost.Energy consumption cost is huge, and energy-saving potential is also very big simultaneously.The full liquid system of air conditioning unit employing, liquid distribution falling liquid film system heat pump unit in traditional air-conditioning system.
A kind of low form full-liquid type energy tower heat pump unit such as patent disclosure that the patent No. is CN204494887U, full-liquid type energy tower heat pump unit is adopted to realize the technology such as heating, refrigeration, but the change due to full liquid unit liquid level, adding spill port again is fixing, oil viscosity is not unison change, thus easily causing the phenomenons such as unit oil starvation, liquid hammer, thus causing damaging compressor.
And liquid distribution falling liquid film system heat pump unit, it is necessary to condenser increases too much area, and refrigerant liquid after condensation is supercool, it is ensured that the liquid refrigerant of the low-temp low-pressure of expansion valve throttling is in liquid phase region, and liquid refrigerant enters distribution falling film evaporator and realizes equal liquid.Condenser is supercool for refrigerant liquid, causes that system supercool part heat exchanger area in fluorine road is not fully utilized, and then makes effective work area of condensing heat exchanger reduce, causes generation energy waste.
Pay close attention under the natural environment overall background with weather conditions at society comprehensively, this traditional technical scheme, obviously the strategic action of the energy-saving and emission-reduction of China's proposition, ecological environment, low-carbon economy, recycling economy can not be met, it is necessary to propose new technical scheme and solve or improve conventional process techniques.
Summary of the invention
The present invention is directed to prior art Problems existing, it is proposed that a kind of source pump being capable of expansion valve throttling gas-liquid two-phase cold-producing medium uniform distribution and gas-liquid two-phase uniform distribution method.
The technical solution adopted for the present invention to solve the technical problems is: a kind of source pump, distributes formula vaporizer including compressor and the oil eliminator that described compressor connect and the condenser that described oil eliminator connects and the parallel two phase flow that connects with described compressor；It is sequentially provided with the first ball valve, device for drying and filtering, electric expansion valve and the second ball valve between described condenser with described parallel two phase flow distribution formula vaporizer, forms the first loop；It is sequentially provided with oil return corner-kick valve and return filter between described oil eliminator and described compressor, forms second servo loop；Being sequentially provided with oil return solenoid valve, jet pump, compressor input ball valve between described parallel two phase flow distribution formula vaporizer and described compressor, described jet pump connects described condenser, forms tertiary circuit.
The present invention realizes expansion valve throttling gas-liquid two-phase cold-producing medium uniform distribution by three communication loop loops, utilize condenser to do the internal complete single liquid refrigerants of the supercool vaporizer of liquid to be uniformly distributed thus solving, heat exchanger area is avoided not to be fully utilized, and then improve effective work area of condensing heat exchanger, it is to avoid cause energy waste.
Further, described parallel two phase flow distribution formula vaporizer includes parallel two phase flow allotter, heat exchanger tube, the parallel two phase flow distribution plate of secondary and cylinder.
Further, it is provided with gas register mode area in described parallel two phase flow allotter.
Further, the oil screen of preliminary filtering high temperature high-pressure gaseous coolant and refrigeration oil it is provided with inside described oil eliminator.
Further, the horizontal oil screen of second time filtering high temperature high-pressure gaseous coolant and refrigeration oil it is provided with inside described oil eliminator.
Further, described compressor and described electric expansion valve are by switch board control.
Further, described first loop, described second servo loop, described tertiary circuit are closed circuit.
A kind of gas-liquid two-phase uniform distribution method, utilize the source pump including compressor, oil eliminator, condenser and parallel two phase flow distribution formula vaporizer, low-temp low-pressure gaseous coolant is compressed into high pressure gaseous coolant and is mixed into described oil eliminator with refrigeration oil by described compressor, and high pressure gaseous coolant is separated with refrigeration oil by described oil eliminator by horizontal oil screen；Described high pressure gaseous coolant after separation enters described condenser, described condenser by described high pressure gaseous coolant by the biphase coolant of air-liquid that cooling water condensation is middle temperature high pressure；The biphase coolant of air-liquid of described middle temperature high pressure sequentially passes through the first ball valve, device for drying and filtering, electric expansion valve to be become the biphase coolant of low-temp low-pressure air-liquid with the second ball valve and enters described parallel two phase flow distribution formula vaporizer；The gasification of biphase for low-temp low-pressure air-liquid coolant for low-temp low-pressure gaseous coolant and is entered described compressor and forms the first loop by described parallel two phase flow distribution formula vaporizer；Described refrigeration oil after the separation of described oil eliminator sequentially passes through oil return corner-kick valve and return filter enters compressor and formed the described second servo loop of lubrication；The refrigeration oil that described parallel two phase flow distribution formula vaporizer separates gases at high pressure in oil return solenoid valve with described condenser collect to compressor input ball valve through jet pump injection and return to described compressor formation tertiary circuit.
The present invention realizes expansion valve throttling gas-liquid two-phase cold-producing medium uniform distribution by three communication loop loops, utilize condenser to do the internal complete single liquid refrigerants of the supercool vaporizer of liquid to be uniformly distributed thus solving, heat exchanger area is avoided not to be fully utilized, and then improve effective work area of condensing heat exchanger, it is to avoid cause energy waste.
Further, described parallel two phase flow distribution formula vaporizer includes parallel two phase flow allotter, heat exchanger tube, the parallel two phase flow distribution plate of secondary and cylinder；The described biphase coolant of low-pressure low-temperature air-liquid enters described parallel two phase flow allotter by the storage distribution of shwoot refrigerant gas, then makes the biphase coolant uniform distribution of air-liquid through described heat exchanger tube by secondary parallel two phase flow distribution plate, finally enters described cylinder.
Further, the oil screen of preliminary filtering high temperature high-pressure gaseous coolant and refrigeration oil it is provided with inside described oil eliminator.
The invention has the beneficial effects as follows, realize expansion valve throttling gas-liquid two-phase cold-producing medium uniform distribution by three communication loop loops, improve effective work area of condensing heat exchanger, it is to avoid cause energy waste.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of source pump of the present invention and gas-liquid two-phase uniform distribution method；
Fig. 2 is the structural representation of parallel two phase flow distribution formula vaporizer in Fig. 1；
Wherein, 1, compressor, 2, oil eliminator, 3, condenser, 4, the first ball valve, 5, device for drying and filtering, 6, electric expansion valve, 7, the second ball valve, 8, parallel two phase flow distribution formula vaporizer, 9, oil return solenoid valve, 10, jet pump, 11, compressor input ball valve, 12, oil return corner-kick valve, 13, return filter, 14, switch board, 15, parallel two phase flow allotter, 16, heat exchanger tube, 17, the parallel two phase flow distribution plate of secondary, 18, cylinder.
Detailed description of the invention
Technical scheme is further illustrated below in conjunction with accompanying drawing and by detailed description of the invention.
As shown in Figure 1 and Figure 2, a kind of source pump, including compressor 1, oil eliminator 2, condenser the 3, first ball valve 4, device for drying and filtering 5, electric expansion valve the 6, second ball valve 7, parallel two phase flow distribution formula vaporizer 8, oil return solenoid valve 9, jet pump 10, compressor input ball valve 11, oil return corner-kick valve 12, return filter 13.Described compressor 1 connects described oil eliminator 2, described oil eliminator 2 connects described ball valve 4, described ball valve 4 connects described device for drying and filtering 5, described device for drying and filtering 5 connects described electric expansion valve 6, described electric expansion valve 6 connects described ball valve 7, described ball valve 7 connects described parallel two phase flow distribution formula vaporizer 8, and described parallel two phase flow distribution formula vaporizer 8 connects described compressor 1 and forms the first loop.Described compressor 1 connects described oil eliminator 2, and the refrigeration oil that described oil eliminator 2 separates connects with described return filter 13 through described oil corner-kick valve 12, enters described compressor 1 and forms second servo loop.The internal refrigeration oil got off of described parallel two phase flow distribution formula vaporizer 8 is collected to described compressor input ball valve 11 through described jet pump 10 injection with described condenser 3 gases at high pressure by described solenoid 9, enters described compressor 1 and forms tertiary circuit.Described parallel two phase flow distribution formula vaporizer 8 includes parallel two phase flow allotter 15, heat exchanger tube 16, the parallel two phase flow distribution plate 17 of secondary and cylinder 18.It is provided with gas register mode area in described parallel two phase flow allotter 15.The internal oil screen being provided with preliminary filtering high temperature high-pressure gaseous coolant and refrigeration oil of described oil eliminator 2.The internal horizontal oil screen being provided with second time filtering high temperature high-pressure gaseous coolant and refrigeration oil of described oil eliminator 2.Described compressor 1 and described electric expansion valve 6 are controlled by switch board 14.Described first loop, described second servo loop, described tertiary circuit are closed circuit.Expansion valve throttling gas-liquid two-phase cold-producing medium uniform distribution is realized by three communication loop loops, utilize condenser to do the internal complete single liquid refrigerants of the supercool vaporizer of liquid to be uniformly distributed thus solving, heat exchanger area is avoided not to be fully utilized, and then improve effective work area of condensing heat exchanger, it is to avoid cause energy waste.
A kind of gas-liquid two-phase uniform distribution method, utilize the source pump including compressor 1, oil eliminator 2, condenser 3 and parallel two phase flow distribution formula vaporizer 8, low-temp low-pressure gaseous coolant is compressed into high pressure gaseous coolant and is mixed into described oil eliminator 2 with refrigeration oil by described compressor 1, and high pressure gaseous coolant is separated with refrigeration oil by described oil eliminator 2 by horizontal oil screen；Described high pressure gaseous coolant after separation enters described condenser 3, described condenser 3 by described high pressure gaseous coolant by the biphase coolant of air-liquid that cooling water condensation is middle temperature high pressure；The biphase coolant of air-liquid of described middle temperature high pressure sequentially passes through the first ball valve 4, device for drying and filtering 5, electric expansion valve 6 to be become the biphase coolant of low-temp low-pressure air-liquid and enters described parallel two phase flow distribution formula vaporizer 8 with the second ball valve 7；The gasification of biphase for low-temp low-pressure air-liquid coolant for low-temp low-pressure gaseous coolant and is entered described compressor 1 and forms the first loop by described parallel two phase flow distribution formula vaporizer 8；Described refrigeration oil after the separation of described oil eliminator 2 sequentially passes through oil return corner-kick valve 12 and return filter 13 enters compressor 1 and formed the second servo loop of lubrication；The described parallel two phase flow distribution refrigeration oil that separates of formula vaporizer 8 gases at high pressure in oil return solenoid valve 9 with described condenser 3 collect to compressor input ball valve 11 through jet pump 10 injection and return to described compressor 1 and form tertiary circuit.
When unit is when load running, low-temp low-pressure gaseous coolant is compressed by compressor 1 and forms high pressure gaseous coolant, high pressure gaseous coolant enters oil eliminator 2 interior sealed space with refrigeration oil mixture, after being filtered by oil screen, after high pressure gaseous coolant and refrigeration oil again pass by horizontal oil screen, the refrigeration oil entrance compressor 1 separated forms circulation and plays lubrication.Meanwhile, High Temperature High Pressure coolant is changed into is condensed into the liquid of middle temperature high pressure, the biphase coolant of gaseous state to the cooling water release heat in condenser 3 copper pipe.Low-pressure low-temperature air-liquid state coolant enters parallel two phase flow allotter 15, gas " register mode area " is had in parallel two phase flow allotter 15, through heat exchanger tube 16 by the storage distribution of shwoot refrigerant gas, then pass through the parallel two phase flow distribution plate 17 of secondary and make air-liquid uniform distribution.Utilize condenser to do the internal complete single liquid refrigerants of the supercool vaporizer of liquid to be uniformly distributed thus solving, it is to avoid heat exchanger area is not fully utilized, and then improves effective work area of condensing heat exchanger, it is to avoid cause energy waste.Entering parallel two phase flow distribution formula vaporizer 8, distribute the running of formula vaporizer 8 through parallel two phase flow, low-pressure low-temperature two-phase mixture coolant absorbs heat from the chilled water flowing through evaporator shell in copper body 18, produces refrigeration to room and reduces the purpose of room temperature.Low-pressure low-temperature coolant sucks compressor 1 after being vaporizated into low temperature low pressure gas, and cold-producing medium forms circulation also into compressor 1 simultaneously.Thus solve vaporizer rely on single-phase flow uniform distribution cold-producing medium, and solve increase supercool formation single-phase liquid realize distributed uniform, it is to avoid condenser copper tube area loss.Parallel two phase flow distribution formula method is assigned to outside each evaporation tube and will not form dry blowing district, and gas-liquid two-phase distribution is uniform, so that the heat exchange efficiency of vaporizer promotes 10%.Also stopped some refrigerant fully to be evaporated and make liquid refrigerant directly be sucked by compressor and cause compressor band liquid to run and damage compressor.
One source pump of the present invention and gas-liquid two-phase uniform distribution method have and are capable of expansion valve throttling gas-liquid two-phase cold-producing medium uniform distribution, and then improve effective work area of condensing heat exchanger, it is to avoid cause the advantages such as energy waste.
Claims (10)
1. a source pump, it is characterised in that: include the condenser (3) that the oil eliminator (2) that compressor (1) connects connects with described oil eliminator (2) and parallel two phase flow distribution formula vaporizer (8) connected with described compressor (1) with described compressor (1)；It is sequentially provided with the first ball valve (4), device for drying and filtering (5), electric expansion valve (6) and the second ball valve (7) between described condenser (3) with described parallel two phase flow distribution formula vaporizer (8), forms the first loop；It is sequentially provided with oil return corner-kick valve (12) and return filter (13) between described oil eliminator (2) and described compressor (1), forms second servo loop；It is sequentially provided with oil return solenoid valve (9), jet pump (10), compressor input ball valve (11) between described parallel two phase flow distribution formula vaporizer (8) and described compressor (1), described jet pump (10) connects described condenser (3), forms tertiary circuit.
2. a kind of source pump according to claim 1, it is characterised in that: described parallel two phase flow distribution formula vaporizer (8) includes parallel two phase flow allotter (15), heat exchanger tube (16), the parallel two phase flow distribution plate (17) of secondary and cylinder (18).
3. a kind of source pump according to claim 2, it is characterised in that: it is provided with gas register mode area in described parallel two phase flow allotter (15).
4. a kind of source pump according to claim 1, it is characterised in that: the internal oil screen being provided with preliminary filtering high temperature high-pressure gaseous coolant and refrigeration oil of described oil eliminator (2).
5. according to a kind of source pump described in claim 4, it is characterised in that: the internal horizontal oil screen being provided with second time filtering high temperature high-pressure gaseous coolant and refrigeration oil of described oil eliminator (2).
6. according to a kind of source pump described in claim 1, it is characterised in that: described compressor (1) and described electric expansion valve (6) are controlled by switch board (14).
7. according to a kind of source pump described in claim 1, it is characterised in that: described first loop, described second servo loop, described tertiary circuit are closed circuit.
8. a gas-liquid two-phase uniform distribution method, utilization includes compressor (1), oil eliminator (2), condenser (3) and parallel two phase flow and distributes the source pump of formula vaporizer (8), it is characterized in that: low-temp low-pressure gaseous coolant is compressed into high pressure gaseous coolant and is mixed into described oil eliminator (2) with refrigeration oil by described compressor (1), high pressure gaseous coolant is separated with refrigeration oil by described oil eliminator (2) by horizontal oil screen；Described high pressure gaseous coolant after separation enters described condenser (3), described condenser (3) by described high pressure gaseous coolant by the biphase coolant of air-liquid that cooling water condensation is middle temperature high pressure；The biphase coolant of air-liquid of described middle temperature high pressure sequentially passes through the first ball valve (4), device for drying and filtering (5), electric expansion valve (6) to be become the biphase coolant of low-temp low-pressure air-liquid and enters described parallel two phase flow distribution formula vaporizer (8) with the second ball valve (7)；The gasification of biphase for low-temp low-pressure air-liquid coolant for low-temp low-pressure gaseous coolant and is entered described compressor (1) and forms the first loop by described parallel two phase flow distribution formula vaporizer (8)；Described refrigeration oil after described oil eliminator (2) separation sequentially passes through oil return corner-kick valve (12) and return filter (13) enters compressor (1) and formed the second servo loop of lubrication；The refrigeration oil that described parallel two phase flow distribution formula vaporizer (8) separates gases at high pressure in oil return solenoid valve (9) with described condenser (3) collect to compressor input ball valve (11) through jet pump (10) injection and return to described compressor (1) formation tertiary circuit.
9. method according to claim 8, it is characterised in that: described parallel two phase flow distribution formula vaporizer (8) includes parallel two phase flow allotter (15), heat exchanger tube (16), the parallel two phase flow distribution plate (17) of secondary and cylinder (18)；The described biphase coolant of low-pressure low-temperature air-liquid enters described parallel two phase flow allotter (15) by the storage distribution of shwoot refrigerant gas, then make the biphase coolant uniform distribution of air-liquid through described heat exchanger tube (16) by secondary parallel two phase flow distribution plate (17), finally enter described cylinder (18).
10. method according to claim 8, it is characterised in that: the internal oil screen being provided with preliminary filtering high temperature high-pressure gaseous coolant and refrigeration oil of described oil eliminator (2).
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| CN201610161499.3A CN105805970B (en) | 2016-03-22 | 2016-03-22 | A kind of heat pump unit and gas-liquid two-phase uniform distribution method |
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| CN201610161499.3A CN105805970B (en) | 2016-03-22 | 2016-03-22 | A kind of heat pump unit and gas-liquid two-phase uniform distribution method |
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| CN105805970A true CN105805970A (en) | 2016-07-27 |
| CN105805970B CN105805970B (en) | 2018-09-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766415A (en) * | 2016-12-20 | 2017-05-31 | 江苏世林博尔制冷设备有限公司 | Knockout system is set up after a kind of dry type unit evaporator |
| CN111288595A (en) * | 2018-12-10 | 2020-06-16 | 李守雄 | Cleaning device for refrigeration air-conditioning system without condenser, expansion valve and capillary tube |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865553A (en) * | 2010-05-21 | 2010-10-20 | 北京中科华誉能源技术发展有限责任公司 | Flooded water source heat pump system with parallel scroll compressor |
| CN201973960U (en) * | 2011-01-30 | 2011-09-14 | 山东欧锴空调科技有限公司 | Oil return system for hydraulic filling flooded water source ejector |
| CN202835922U (en) * | 2012-09-19 | 2013-03-27 | 山东乐捷空调设备有限公司 | Full liquid type heat pump system |
| CN203687461U (en) * | 2013-12-30 | 2014-07-02 | 麦克维尔空调制冷(武汉)有限公司 | Full falling film evaporator with double refrigerant distributing devices |
| CN204006843U (en) * | 2014-07-16 | 2014-12-10 | 江苏海雷德蒙新能源有限公司 | A kind of parallel oil separator |
| CN205481894U (en) * | 2016-03-22 | 2016-08-17 | 浙江英谷节能设备有限公司 | Heat pump set |
-
2016
- 2016-03-22 CN CN201610161499.3A patent/CN105805970B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865553A (en) * | 2010-05-21 | 2010-10-20 | 北京中科华誉能源技术发展有限责任公司 | Flooded water source heat pump system with parallel scroll compressor |
| CN201973960U (en) * | 2011-01-30 | 2011-09-14 | 山东欧锴空调科技有限公司 | Oil return system for hydraulic filling flooded water source ejector |
| CN202835922U (en) * | 2012-09-19 | 2013-03-27 | 山东乐捷空调设备有限公司 | Full liquid type heat pump system |
| CN203687461U (en) * | 2013-12-30 | 2014-07-02 | 麦克维尔空调制冷(武汉)有限公司 | Full falling film evaporator with double refrigerant distributing devices |
| CN204006843U (en) * | 2014-07-16 | 2014-12-10 | 江苏海雷德蒙新能源有限公司 | A kind of parallel oil separator |
| CN205481894U (en) * | 2016-03-22 | 2016-08-17 | 浙江英谷节能设备有限公司 | Heat pump set |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766415A (en) * | 2016-12-20 | 2017-05-31 | 江苏世林博尔制冷设备有限公司 | Knockout system is set up after a kind of dry type unit evaporator |
| CN111288595A (en) * | 2018-12-10 | 2020-06-16 | 李守雄 | Cleaning device for refrigeration air-conditioning system without condenser, expansion valve and capillary tube |
| CN111288595B (en) * | 2018-12-10 | 2022-02-25 | 李守雄 | Cleaning device for refrigeration air-conditioning system without condenser, expansion valve and capillary tube |
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| Publication number | Publication date |
|---|---|
| CN105805970B (en) | 2018-09-18 |
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