CN107990580B - A kind of the self-cascade heat pump system and operational mode of separating for several times injection synergy - Google Patents
A kind of the self-cascade heat pump system and operational mode of separating for several times injection synergy Download PDFInfo
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- CN107990580B CN107990580B CN201711087220.2A CN201711087220A CN107990580B CN 107990580 B CN107990580 B CN 107990580B CN 201711087220 A CN201711087220 A CN 201711087220A CN 107990580 B CN107990580 B CN 107990580B
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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
- F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
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- Engineering & Computer Science (AREA)
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- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention discloses the self-cascade heat pump system and operational mode of a kind of injection synergy of separating for several times, which is made of compressor, condenser, gas-liquid separator, throttle valve, condenser/evaporator, evaporator, steam jet ejector and control valve；Refrigerant air-liquid two-phase mixture after throttling is carried out gas-liquid separation using gas-liquid separator by the present invention, guarantees that entering condenser/evaporator and the refrigerant of evaporator heat exchange is neat liquid, improves the heat exchange efficiency of condenser/evaporator and evaporator；And the system improves coefficient of performance using the available energy of refrigerant gas isolated in steam jet ejector recycling gas-liquid separator；In addition, the present invention can select single-stage heat pump mode or self-cascade heat pump mode according to outdoor environment temperature, system performance is made to reach optimum state, so the system is expected to obtain significant energy conservation and economic benefit.
Description
Technical field
The present invention relates to self-cascade heat pump systems technology fields, and in particular to a kind of Auto-cascade cycle of separating for several times injection synergy
Heat pump system and operational mode.
Background technique
How with becoming increasingly conspicuous for energy problem, a major issue efficiently is had become using the existing energy.Winter
The energy consumption of heat pump unit is one of the main energy consumption in production and living.Single-stage heat pump structure is simple, major applications occasion
Coefficient of performance is higher, can satisfy the demand of user, but in certain special occasions, such as outdoor environment temperature is low, the temperature difference
It is required that big occasion, single-stage heat pump system performance is very poor or even can not achieve heat-production functions, is not able to satisfy user demand, at this moment needs
It to be just able to achieve using overlapping heat pump.Self-cascade heat pump is a kind of overlapping heat pump of special shape, need to only use a compression
Machine can realize that overlapping heats, and the gas-liquid phase constituent in gas-liquid phase equilibrium is different using non-azeotropic mixed working medium for self-cascade heat pump
The characteristics of, higher boiling working medium and low boiling working fluid are separated by condenser and gas-liquid separator and enter two circulation overlapping systems
Heat.Compared with single-stage heat pump, coefficient of performance is higher in the lower situation of outdoor environment temperature, relatively reliable, but works as room
When external environment temperature is higher, system performance is poorer than single-stage heat pump.In China, Summer and winter outdoor environment temperature is widely different, single
The demand that user is all unable to satisfy using single-stage heat pump or self-cascade heat pump.
Summary of the invention
The purpose of the present invention is overcome the deficiencies of the prior art and provide a kind of self-cascade heat pump of separating for several times injection synergy
System and operational mode, the system can select single-stage heat pump mode or self-cascade heat pump mode according to outdoor environment temperature, make be
System performance reach optimum state, in addition, the system using gas-liquid separator by the refrigerant air-liquid two-phase mixture after throttling into
Row gas-liquid separation guarantees that entering condenser/evaporator and entering the refrigerant of evaporator heat absorption is neat liquid, improves condenser/evaporator
With the heat exchange efficiency of evaporator.
In order to achieve the above objectives, the technical scheme adopted by the invention is that:
A kind of self-cascade heat pump system of separating for several times injection synergy, by compressor 1, condenser 2, the first gas-liquid separator
3, first throttle valve 4, the second gas-liquid separator 5, condenser/evaporator 6, second throttle 7, third gas-liquid separator 8, evaporator
9, steam jet ejector 10, the first control valve 11 and the second control valve 12 are formed；
The compressor 1 outlet by connecting tube be sequentially communicated condenser 2, the first gas-liquid separator 3, first throttle valve 4,
Second gas-liquid separator 5,1 entrance of condenser/evaporator 6, steam jet ejector 10 and compressor；First gas-liquid separator, 3 upper end outlet
The first control valve 11, condenser/evaporator 6, second throttle 7, third gas-liquid separator 8, evaporator are sequentially communicated by connecting tube
9,10 entrance of steam jet ejector；First gas-liquid separator, 3 upper end outlet is also sequentially communicated control valve 12 and steam jet ejector 10 enters
Mouthful；In addition, 5 upper end outlet of the second gas-liquid separator is connected with the outlet of condenser/evaporator 6；It is brought out on third gas-liquid separator 8
Mouth is connected with the outlet of evaporator 9.
Refrigerant air-liquid two-phase mixture after first throttle valve 4 is carried out gas-liquid point by second gas-liquid separator 5
From the refrigerant for guaranteeing to enter the heat absorption of condenser/evaporator 6 is neat liquid, improves the heat exchange efficiency of condenser/evaporator 6.
Refrigerant air-liquid two-phase mixture after second throttle 7 is carried out gas-liquid point by the third gas-liquid separator 8
From the refrigerant for guaranteeing to enter the heat absorption of evaporator 9 is neat liquid, improves the heat exchange efficiency of evaporator 9.
The steam jet ejector 10 recycles the available energy of 3 mesohigh refrigerant gas of the first gas-liquid separator, improves pressure
The pressure and temperature of 1 import of contracting machine.
First control valve 11 and the second control valve 12 is solenoid valve, and effect is the flowing by controlling refrigerant
Direction, decision systems press single-stage heat pump mode or self-cascade heat pump mode operation.
The operational mode of the self-cascade heat pump system of the described separating for several times injection synergy, including single-stage heat pump mode and from
Overlapping heat pump mode, specific as follows:
Single-stage heat pump mode: the first control valve 11 is closed, and the second control valve 12 is opened；The high pressure that compressor 1 exports is non-total
Boiling mixed refrigerant vapor, which enters after condenser 2 condenses heat release, becomes high-pressure refrigerant gas-fluid two-phase mixture, high-pressure refrigerant
Gas-fluid two-phase mixture carries out gas-liquid separation, the isolated high compacting of the first gas-liquid separator 3 in the first gas-liquid separator 3
Refrigerant gas enters steam jet ejector 10, the isolated high-pressure refrigerant of the first gas-liquid separator 3 by the second control valve 12
Liquid then enters 4 reducing pressure by regulating flow of first throttle valve into middle compression refrigerant gas-fluid two-phase mixture, then passes through the second gas-liquid separation
Device 5 carries out gas-liquid separation, and the isolated middle compression refrigerant liquid of the second gas-liquid separator 5 enters the evaporation of condenser/evaporator 6 and inhales
The middle compression refrigerant gas mixing isolated with the second gas-liquid separator 5 after heat enters steam jet ejector 10 by the after mixing
Compressor 1, which is returned to, after the isolated higher pressure refrigerant gas injection boosting of one gas-liquid separator 3 completes circulation；
Self-cascade heat pump mode: the first control valve 11 is opened, and the second control valve 12 is closed；The high pressure that compressor 1 exports is non-
Azeotropic refrigerant steam, which enters after condenser 2 condenses heat release, becomes high-pressure refrigerant gas-fluid two-phase mixture, high-pressure refrigeration
Agent gas-fluid two-phase mixture carries out gas-liquid separation, the isolated high pressure of the first gas-liquid separator 3 in the first gas-liquid separator 3
Refrigerant liquid enters 4 reducing pressure by regulating flow of first throttle valve into middle compression refrigerant gas-fluid two-phase mixture, then passes through the second gas-liquid
Separator 5 carries out gas-liquid separation, and the isolated middle compression refrigerant liquid of the second gas-liquid separator 5 enters the steaming of condenser/evaporator 6
The middle compression refrigerant mixed gases isolated with the second gas-liquid separator 5 after hair heat absorption, subsequently into steam jet ejector 10；
The isolated higher pressure refrigerant gas of first gas-liquid separator 3 enters the condensation of condenser/evaporator 6 by the first control valve 11 and puts
Heat, subsequently into 7 reducing pressure by regulating flow of second throttle at low pressure refrigerant gas-fluid two-phase mixture, low pressure refrigerant gas-liquid two-phase is mixed
Close object and carry out gas-liquid separation in third gas-liquid separator 8, the isolated low pressure refrigerant liquid of third gas-liquid separator 8 into
Enter to enter steam after isolated with third gas-liquid separator 8 low pressure refrigerant gas after 9 evaporation endothermic of evaporator mixes and spray
Emitter 10 is returned to compressor 1 after the middle compression refrigerant gas injection boosting from condenser/evaporator 6 and completes circulation.
Relative to conventional self-cascade heat pump system, the self-cascade heat pump system of separating for several times injection synergy of the present invention is used
Refrigerant air-liquid two-phase mixture after throttling is carried out gas-liquid separation by gas-liquid separator, and recycles gas using steam jet ejector
The available energy of refrigerant gas in liquid/gas separator.The system only must add steam on the basis of conventional self-cascade heat pump system
Injector, gas-liquid separator, control valve, and this body structure of these equipment is simple, cheap, performance is stablized, so this is repeatedly
The self-cascade heat pump system of separation injection synergy is expected to obtain significant energy conservation and economic benefit, can achieve following beneficial to effect
Fruit:
(1) single-stage heat pump mode or self-cascade heat pump mode can be selected, system performance is reached according to outdoor environment temperature
Optimum state；
(2) gas-liquid separator by after throttling gas-fluid two-phase mixture carry out gas-liquid separation, improve condenser/evaporator and
The heat exchange efficiency of evaporator.
(3) when single-stage heat pump mode, higher pressure refrigerant gas injection that steam jet ejector is obtained with gas-liquid separator separates
The middle compression refrigerant gas of condenser/evaporator outlet, improves the temperature and pressure of suction port of compressor refrigerant vapour.
(4) when self-cascade heat pump mode, the middle compression refrigerant gas injection that steam jet ejector condenser/evaporator exports steams
The low pressure refrigerant gas for sending out device outlet, improves the temperature and pressure of suction port of compressor refrigerant vapour.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of present system.
Specific embodiment
The present invention is described in further details with reference to the accompanying drawings and detailed description:
As shown in Figure 1, a kind of self-cascade heat pump system of separating for several times injection synergy of the present invention, by compressor 1, condenser
2, the first gas-liquid separator 3, first throttle valve 4, the second gas-liquid separator 5, condenser/evaporator 6, second throttle 7, third gas
Liquid/gas separator 8, evaporator 9, steam jet ejector 10, the first control valve 11 and the second control valve 12 are formed；
The compressor 1 outlet by connecting tube be sequentially communicated condenser 2, the first gas-liquid separator 3, first throttle valve 4,
Second gas-liquid separator 5,1 entrance of condenser/evaporator 6, steam jet ejector 10 and compressor；First gas-liquid separator, 3 upper end outlet
The first control valve 11, condenser/evaporator 6, second throttle 7, third gas-liquid separator 8, evaporator are sequentially communicated by connecting tube
9,10 entrance of steam jet ejector；First gas-liquid separator, 3 upper end outlet is also sequentially communicated control valve 12 and steam jet ejector 10 enters
Mouthful；In addition, 5 upper end outlet of the second gas-liquid separator is connected with the outlet of condenser/evaporator 6；It is brought out on third gas-liquid separator 8
Mouth is connected with the outlet of evaporator 9.
The self-cascade heat pump system of separating for several times injection synergy of the present invention presses following mode operation:
Single-stage heat pump mode: the first control valve 11 is closed, and the second control valve 12 is opened；The high pressure that compressor 1 exports is non-total
Boiling mixed refrigerant vapor, which enters after condenser 2 condenses heat release, becomes high-pressure refrigerant gas-fluid two-phase mixture, high-pressure refrigerant
Gas-fluid two-phase mixture carries out gas-liquid separation, the isolated high compacting of the first gas-liquid separator 3 in the first gas-liquid separator 3
Refrigerant gas enters steam jet ejector 10, the isolated high-pressure refrigerant of the first gas-liquid separator 3 by the second control valve 12
Liquid then enters 4 reducing pressure by regulating flow of first throttle valve into middle compression refrigerant gas-fluid two-phase mixture, then passes through the second gas-liquid separation
Device 5 carries out gas-liquid separation, and the isolated middle compression refrigerant liquid of the second gas-liquid separator 5 enters the evaporation of condenser/evaporator 6 and inhales
The middle compression refrigerant gas mixing isolated with the second gas-liquid separator 5 after heat enters steam jet ejector 10 by the after mixing
Compressor 1, which is returned to, after the isolated higher pressure refrigerant gas injection boosting of one gas-liquid separator 3 completes circulation.
Self-cascade heat pump mode: the first control valve 11 is opened, and the second control valve 12 is closed；The high pressure that compressor 1 exports is non-
Azeotropic refrigerant steam, which enters after condenser 2 condenses heat release, becomes high-pressure refrigerant gas-fluid two-phase mixture, high-pressure refrigeration
Agent gas-fluid two-phase mixture carries out gas-liquid separation, the isolated high pressure of the first gas-liquid separator 3 in the first gas-liquid separator 3
Refrigerant liquid enters 4 reducing pressure by regulating flow of first throttle valve into middle compression refrigerant gas-fluid two-phase mixture, then passes through the second gas-liquid
Separator 5 carries out gas-liquid separation, and the isolated middle compression refrigerant liquid of the second gas-liquid separator 5 enters the steaming of condenser/evaporator 6
The middle compression refrigerant mixed gases isolated with the second gas-liquid separator 5 after hair heat absorption, subsequently into steam jet ejector 10；
The isolated higher pressure refrigerant gas of first gas-liquid separator 3 enters the condensation of condenser/evaporator 6 by the first control valve 11 and puts
Heat, subsequently into 7 reducing pressure by regulating flow of second throttle at low pressure refrigerant gas-fluid two-phase mixture, low pressure refrigerant gas-liquid two-phase is mixed
Close object and carry out gas-liquid separation in third gas-liquid separator 8, the isolated low pressure refrigerant liquid of third gas-liquid separator 8 into
Enter to enter steam after isolated with third gas-liquid separator 8 low pressure refrigerant gas after 9 evaporation endothermic of evaporator mixes and spray
Emitter 10 is returned to compressor 1 after the middle compression refrigerant gas injection boosting from condenser/evaporator 6 and completes circulation.
Claims (6)
1. a kind of self-cascade heat pump system of separating for several times injection synergy, it is characterised in that: by compressor (1), condenser (2),
First gas-liquid separator (3), first throttle valve (4), the second gas-liquid separator (5), condenser/evaporator (6), second throttle
(7), third gas-liquid separator (8), evaporator (9), steam jet ejector (10), the first control valve (11) and the second control valve (12)
It is formed；
Compressor (1) outlet is sequentially communicated condenser (2), the first gas-liquid separator (3), first throttle valve by connecting tube
(4), the second gas-liquid separator (5), condenser/evaporator (6), steam jet ejector (10) and compressor (1) entrance；First gas-liquid point
From device (3) upper end outlet by connecting tube be sequentially communicated the first control valve (11), condenser/evaporator (6), second throttle (7),
Third gas-liquid separator (8), evaporator (9), steam jet ejector (10) entrance；First gas-liquid separator (3) upper end outlet also according to
Secondary connection control valve (12) and steam jet ejector (10) entrance；In addition, the second gas-liquid separator (5) upper end outlet and condensation evaporation
Device (6) outlet is connected；Third gas-liquid separator (8) upper end outlet is connected with evaporator (9) outlet.
2. a kind of self-cascade heat pump system of separating for several times injection synergy as described in claim 1, it is characterised in that: described
Refrigerant air-liquid two-phase mixture after first throttle valve (4) is carried out gas-liquid separation by the second gas-liquid separator (5), guarantees to enter
The refrigerant of condenser/evaporator (6) heat absorption is neat liquid, improves the heat exchange efficiency of condenser/evaporator (6).
3. a kind of self-cascade heat pump system of separating for several times injection synergy as described in claim 1, it is characterised in that: described
Refrigerant air-liquid two-phase mixture after second throttle (7) is carried out gas-liquid separation by third gas-liquid separator (8), guarantees to enter
The refrigerant of evaporator (9) heat absorption is neat liquid, improves the heat exchange efficiency of evaporator (9).
4. a kind of self-cascade heat pump system of separating for several times injection synergy as described in claim 1, it is characterised in that: described
Steam jet ejector (10) recycles the available energy of the first gas-liquid separator (3) mesohigh refrigerant gas, improves compressor (1) import
Pressure and temperature.
5. a kind of self-cascade heat pump system of separating for several times injection synergy as described in claim 1, it is characterised in that: described
First control valve (11) and the second control valve (12) are solenoid valve, and effect is the flow direction by controlling refrigerant, are determined
System presses single-stage heat pump mode or self-cascade heat pump mode operation.
6. the operation method of the self-cascade heat pump system of separating for several times injection synergy described in any one of claim 1 to 5, special
Sign is: specific as follows including single-stage heat pump mode and self-cascade heat pump mode:
Single-stage heat pump mode: the first control valve (11) is closed, and the second control valve (12) is opened；The high pressure of compressor (1) outlet is non-
Azeotropic refrigerant steam becomes high-pressure refrigerant gas-fluid two-phase mixture, height compacting after entering condenser (2) condensation heat release
Cryogen gas-fluid two-phase mixture carries out gas-liquid separation in the first gas-liquid separator (3), and the first gas-liquid separator (3) is isolated
Higher pressure refrigerant gas enter steam jet ejector (10) by the second control valve (12), the first gas-liquid separator (3) separates
To high pressure refrigerant liquid then enter first throttle valve (4) reducing pressure by regulating flow at middle compression refrigerant gas-fluid two-phase mixture, then
By the second gas-liquid separator (5) carry out gas-liquid separation, the isolated middle compression refrigerant liquid of the second gas-liquid separator (5) into
Enter middle compression refrigerant gas mixing isolated with the second gas-liquid separator (5) after condenser/evaporator (6) evaporation endothermic, mixing
Enter steam jet ejector (10) afterwards to be returned to after the isolated higher pressure refrigerant gas injection boosting of the first gas-liquid separator (3)
Compressor (1) completes circulation；
Self-cascade heat pump mode: the first control valve (11) is opened, and the second control valve (12) is closed；The high pressure of compressor (1) outlet
Mixed non-azeotropic refrigerant steam becomes high-pressure refrigerant gas-fluid two-phase mixture, high pressure after entering condenser (2) condensation heat release
Refrigerant air-liquid two-phase mixture carries out gas-liquid separation in the first gas-liquid separator (3), and the first gas-liquid separator (3) separates
To high pressure refrigerant liquid enter first throttle valve (4) reducing pressure by regulating flow into middle compression refrigerant gas-fluid two-phase mixture, then lead to
It crosses the second gas-liquid separator (5) and carries out gas-liquid separation, the isolated middle compression refrigerant liquid of the second gas-liquid separator (5) enters
The middle compression refrigerant mixed gases isolated with the second gas-liquid separator (5) after condenser/evaporator (6) evaporation endothermic, then
Into steam jet ejector (10)；The isolated higher pressure refrigerant gas of first gas-liquid separator (3) passes through the first control valve
(11) enter condenser/evaporator (6) and condense heat release, subsequently into second throttle (7) reducing pressure by regulating flow at low pressure refrigerant gas-liquid two
Phase mixture, low pressure refrigerant gas-fluid two-phase mixture carry out gas-liquid separation, third gas-liquid point in third gas-liquid separator (8)
The low pressure refrigerant liquid isolated from device (8) separates after entering evaporator (9) evaporation endothermic with third gas-liquid separator (8)
Enter the middle compression refrigerant gas that steam jet ejector (10) are come from condenser/evaporator (6) after obtained low pressure refrigerant gas mixing
Compressor (1), which is returned to, after the boosting of body injection completes circulation.
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| CN201711087220.2A CN107990580B (en) | 2017-11-07 | 2017-11-07 | A kind of the self-cascade heat pump system and operational mode of separating for several times injection synergy |
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| CN201711087220.2A CN107990580B (en) | 2017-11-07 | 2017-11-07 | A kind of the self-cascade heat pump system and operational mode of separating for several times injection synergy |
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| CN108592448A (en) * | 2018-05-22 | 2018-09-28 | 福建工程学院 | Synergy auto-cascading refrigeration system is pressed in a kind of injector |
| CN109307377B (en) * | 2018-09-20 | 2020-05-26 | 西安交通大学 | Two-stage self-cascade refrigeration cycle system and circulation method adopting ejector to increase efficiency |
| CN109737623A (en) * | 2018-12-25 | 2019-05-10 | 西安交通大学 | A kind of Novel synergistic low temperature auto-cascading refrigeration system and the course of work |
| CN113654262B (en) * | 2021-08-31 | 2022-06-21 | 嵊州市浙江工业大学创新研究院 | Low-grade heat-driven refrigerating system for large-scale freezer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1047962C (en) * | 1995-10-06 | 2000-01-05 | 中国石油化工总公司 | Polymetal carrying alkyl aromatic hydrocarbon isomerization catalyst |
| EP1589301B1 (en) * | 2000-03-15 | 2017-06-14 | Denso Corporation | Ejector cycle system with critical refrigerant pressure |
| JP2004205154A (en) * | 2002-12-26 | 2004-07-22 | Nippon Soken Inc | Refrigerating machine |
| CN1288401C (en) * | 2005-04-11 | 2006-12-06 | 北京工业大学 | Heat pump (refrigerating) system with injector and liquid storage subcooler |
| JP4506877B2 (en) * | 2008-03-12 | 2010-07-21 | 株式会社デンソー | Ejector |
| US20110289953A1 (en) * | 2010-05-27 | 2011-12-01 | Gerald Allen Alston | Thermally Enhanced Cascade Cooling System |
| ITPD20130004A1 (en) * | 2013-01-15 | 2014-07-16 | Epta Spa | REFRIGERATOR SYSTEM WITH EJECTOR |
| CN203364496U (en) * | 2013-06-09 | 2013-12-25 | 张翠珍 | Auto-cascade type refrigeration and heating all-in-one machine of refrigerator, air conditioner and water heater |
| JP6277869B2 (en) * | 2014-05-30 | 2018-02-14 | 株式会社デンソー | Ejector refrigeration cycle |
| KR102303676B1 (en) * | 2014-12-30 | 2021-09-23 | 삼성전자주식회사 | Ejector and Cooling Apparatus having the same |
| CN205048774U (en) * | 2015-10-15 | 2016-02-24 | 珠海格力电器股份有限公司 | Enhanced vapor injection system and air conditioning unit who has this system |
| CN106766316A (en) * | 2016-12-23 | 2017-05-31 | 燕园德普科技（北京）有限公司 | A kind of Gas-supplying enthalpy-increasing CO suitable for cold district2Part overlapping heat pump |
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