CN110953742A - Ejector expansion self-cascade refrigeration system with vortex tube - Google Patents
Ejector expansion self-cascade refrigeration system with vortex tube Download PDFInfo
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- CN110953742A CN110953742A CN201911343405.4A CN201911343405A CN110953742A CN 110953742 A CN110953742 A CN 110953742A CN 201911343405 A CN201911343405 A CN 201911343405A CN 110953742 A CN110953742 A CN 110953742A
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 29
- 239000003507 refrigerant Substances 0.000 claims abstract description 70
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 239000012530 fluid Substances 0.000 claims abstract description 19
- 238000002347 injection Methods 0.000 claims abstract description 7
- 239000007924 injection Substances 0.000 claims abstract description 7
- 239000007791 liquid phase Substances 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000012071 phase Substances 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 description 7
- 230000008020 evaporation Effects 0.000 description 7
- 230000005494 condensation Effects 0.000 description 6
- 238000009833 condensation Methods 0.000 description 6
- 239000011555 saturated liquid Substances 0.000 description 5
- 238000000926 separation method Methods 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000013526 supercooled liquid Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Images
Classifications
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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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/02—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using Joule-Thompson effect; using vortex effect
- F25B9/04—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using Joule-Thompson effect; using vortex effect using vortex effect
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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
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
-
- 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
- F25B41/30—Expansion means; Dispositions thereof
-
- 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
-
- 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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/06—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using expanders
-
- 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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/08—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using ejectors
-
- 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
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/04—Details of condensers
- F25B2339/041—Details of condensers of evaporative condensers
Landscapes
- 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)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses an ejector expansion self-cascade refrigeration system with a vortex tube, which comprises a compressor; the outlet of the compressor is connected with the inlet of the first condenser; the outlet of the first condenser is respectively connected with the inlet of the vortex tube and the working fluid inlet of the ejector; the gas outlet at the cold end of the vortex tube is connected with the inlet at the high-pressure side of the evaporative condenser; the hot end outlet of the vortex tube is connected with the inlet of the second condenser; an outlet at the bottom of the second condenser is respectively converged with a liquid outlet end on the right side of the vortex tube and a high-pressure side outlet of the evaporative condenser, and then is connected with a second throttling valve; the second throttle valve is connected with the inlet of the evaporator; the evaporator refrigerant outlet is connected with the injection fluid inlet of the ejector; the outlet of the ejector is connected with the inlet of the gas-liquid separator; and a liquid phase outlet at the bottom of the gas-liquid separator is connected with a low-pressure side inlet of the evaporative condenser through a first throttling valve. The invention utilizes the ejector to recover the expansion work, and can improve the energy efficiency ratio of the self-cascade refrigeration system.
Description
Technical Field
The invention relates to the technical field of refrigeration and low temperature, in particular to an ejector expansion self-cascade refrigeration system with a vortex tube.
Background
With the development of industrial technology and medical field, the application of low-temperature refrigeration technology is more and more extensive. The self-cascade refrigeration system can obtain a low-temperature environment below 60 ℃ below zero, and has low cost and simple structure.
However, the cycle coefficient of performance COP of the self-cascade refrigeration cycle system is often low, and thus it is urgently required to improve the energy efficiency ratio of the self-cascade refrigeration cycle system.
Disclosure of Invention
The invention aims to provide an ejector expansion self-cascade refrigeration system with a vortex tube, aiming at the technical defects in the prior art.
To this end, the present invention provides an ejector expansion self-cascade refrigeration system with a vortex tube, comprising a compressor, a first condenser, a vortex tube, a second condenser, an evaporative condenser, an evaporator, an ejector, a gas-liquid separator, a first throttle valve and a second throttle valve, wherein:
a refrigerant outlet of the compressor connected with the refrigerant inlet of the first condenser;
the refrigerant outlet of the first condenser is respectively connected with the refrigerant inlet of the vortex tube and the working fluid inlet of the ejector;
a cold end gas outlet at the top of the vortex tube is connected with a high-pressure side inlet of the evaporative condenser;
a hot end outlet at the bottom of the vortex tube is connected with a refrigerant inlet at the top of the second condenser;
a refrigerant outlet at the bottom of the second condenser is respectively connected with a liquid outlet end on the right side of the vortex tube and a high-pressure side outlet of the evaporative condenser, converged by a pipeline and then connected with one end of a second throttling valve;
the other end of the second throttling valve is connected with a refrigerant inlet of the evaporator;
the refrigerant outlet of the evaporator is connected with the injection fluid inlet of the ejector;
the outlet of the ejector is connected with the refrigerant inlet of the gas-liquid separator;
a liquid phase outlet at the bottom of the gas-liquid separator is connected with a low-pressure side inlet of the evaporative condenser through a connecting pipeline provided with a first throttling valve;
the low-pressure side inlet and outlet of the evaporative condenser are connected with the injection fluid inlet of the ejector;
and the gas-phase outlet at the top of the gas-liquid separator is connected with the refrigerant inlet of the compressor.
The high-pressure side inlet of the evaporative condenser is connected with the high-pressure side outlet of the evaporative condenser through a first heat exchange tube;
the first heat exchange tube is positioned inside the evaporative condenser.
The low-pressure side inlet of the evaporative condenser is connected with the low-pressure side outlet of the evaporative condenser through a second heat exchange tube;
and the second heat exchange tube is positioned inside the evaporative condenser.
Wherein, the second condenser comprises a condensing pipeline;
and a refrigerant inlet at the top of the second condenser and a refrigerant outlet at the bottom of the second condenser are respectively communicated with the upper end and the lower end of the condensation pipeline.
Wherein, the second condenser comprises a heating pipeline;
the inlet end at the lower side of the heating pipeline is connected with an external water supply source;
the outlet end at the upper side of the heating pipeline is connected with the water using end of a user through a hollow connecting pipeline.
Compared with the prior art, the ejector expansion self-cascade refrigeration system with the vortex tube has the advantages that the structural design is scientific, the expansion work is recovered by the ejector, and the energy efficiency ratio of the self-cascade refrigeration system can be improved.
In addition, the ejector expansion self-cascade refrigeration system with the vortex tube, provided by the invention, utilizes the vortex tube to separate cold and heat, and the second condenser is arranged at the outlet of the hot end of the vortex tube, so that heat can be provided for a user end, and the energy utilization rate is improved;
in addition, the ejector expansion self-cascade refrigeration system with the vortex tube provided by the invention has the advantages that the cold end gas of the vortex tube is subjected to heat release and condensation on the high pressure side of the evaporative condenser, then is mixed with the saturated liquid at the liquid outlet end and the refrigerant working medium at the outlet of the second condenser, and then enters the evaporator through the second throttle valve for refrigeration, so that the amount of the liquid refrigerant entering the evaporator is increased.
Drawings
Fig. 1 is a schematic structural diagram of an ejector expansion self-cascade refrigeration system with a vortex tube according to the present invention.
Detailed Description
In order that those skilled in the art will better understand the technical solution of the present invention, the following detailed description of the present invention is provided in conjunction with the accompanying drawings and embodiments.
Referring to fig. 1, the present invention provides an ejector expansion self-cascade refrigeration system with a vortex tube, comprising a compressor 1, a first condenser 2, a vortex tube 3, a second condenser 4, an evaporative condenser 5 (i.e., evaporative condenser), an evaporator 6, an ejector 7, a gas-liquid separator 8, a first throttle valve 9 and a second throttle valve 10, wherein:
a refrigerant outlet of the compressor 1 connected to a refrigerant inlet of the first condenser 2;
a refrigerant outlet of the first condenser 2 is respectively connected with a refrigerant inlet of the vortex tube 3 and a working fluid inlet of the ejector 7;
that is, the refrigerant outlet of the first condenser 2 is divided into two paths: one path is connected with a refrigerant inlet of the vortex tube 3, and the other path is connected with a working fluid inlet of the ejector 7.
A cold end gas outlet at the top of the vortex tube 3 is connected with a high pressure side inlet a of the evaporative condenser 5;
a hot end outlet at the bottom of the vortex tube 3 is connected with a refrigerant inlet at the top of the second condenser 4;
a refrigerant outlet at the bottom of the second condenser 4 is respectively connected with a liquid outlet end at the right side of the vortex tube 3 and a high-pressure side outlet b of the evaporative condenser 5 through a pipeline and then is connected with one end of a second throttle valve 10;
the other end of the second throttle valve 10 is connected with a refrigerant inlet of the evaporator 6;
the refrigerant outlet of the evaporator 6 is connected with the injection fluid inlet of the ejector 7;
the outlet of the ejector 7 is connected with the refrigerant inlet of the gas-liquid separator 8;
a liquid phase outlet at the bottom of the gas-liquid separator 8 is connected with a low-pressure side inlet c of the evaporative condenser 5 through a connecting pipeline provided with a first throttle valve 9;
the inlet and outlet d of the low-pressure side of the evaporative condenser 5 is connected with the injection fluid inlet of the ejector 7;
and a gas phase outlet at the top of the gas-liquid separator 8 is connected with a refrigerant inlet of the compressor 1.
In the invention, in a specific implementation, a high-pressure side inlet a of the evaporative condenser 5 is connected with a high-pressure side outlet b of the evaporative condenser 5 through a first heat exchange tube;
and the first heat exchange pipe is positioned inside the evaporative condenser 5.
In the invention, in a specific implementation, a low-pressure side inlet c of the evaporative condenser 5 is connected with a low-pressure side outlet d of the evaporative condenser 5 through a second heat exchange tube;
and the second heat exchange tube is positioned inside the evaporative condenser 5.
In the present invention, in a specific implementation, the second condenser 4 includes a condensing pipeline 11;
a refrigerant inlet at the top of the second condenser 4 and a refrigerant outlet at the bottom of the second condenser 4 are respectively communicated with the upper end and the lower end of the condensing pipeline 11.
In the present invention, in a specific implementation, the second condenser 4 includes a heating pipeline 12;
the inlet end of the lower side of the heating pipe 12 is connected to an external water supply source (e.g., a tap water pipe);
the outlet end of the upper side of the heating pipe 12 is connected to a water using end (for example, a faucet) of a user through a hollow connection pipe.
In the invention, the refrigerant in the system is a non-azeotropic mixed refrigerant, and the non-azeotropic mixed refrigerant consists of a high boiling point refrigerant and a low boiling point refrigerant.
It should be noted that, for the present invention, the high-pressure non-azeotropic mixed refrigerant output from the outlet of the first condenser 2 is divided into two paths, one path is used as the working fluid of the ejector 7 to inject the mixed low-pressure refrigerant from the low-pressure side of the evaporator 6 and the evaporative condenser 5; the other path enters a vortex tube 3, and cold and heat separation is carried out in the vortex tube 3.
In order to more clearly understand the present invention, the following description is made of the operation process of the self-cascade air source heat pump system of the present invention:
superheated refrigerant gas output from an outlet of the compressor 1 enters the first condenser 2 to realize partial condensation, and the high-pressure non-azeotropic mixture refrigerant after partial condensation is divided into two paths: one path of the low-pressure gas refrigerant fluid enters the ejector 7 as working fluid, is used for ejecting the low-pressure gas refrigerant fluid from the outlet of the evaporation channel of the evaporation condenser 5 and the outlet of the evaporator 6, is mixed and boosted by the ejector 7 into two-phase refrigerant fluid under intermediate pressure, and then enters the gas-liquid separator 8, the two-phase refrigerant fluid realizes the separation of the gas refrigerant rich in low-boiling-point components and the liquid refrigerant rich in high-boiling-point components in the gas-liquid separator 8, wherein the saturated gas refrigerant is led to the compressor 1, and the saturated liquid refrigerant enters the evaporation side channel of the evaporation condenser 5 for heat absorption and evaporation after being throttled and depressurized by the first throttle valve 9;
the other path of the high-pressure non-azeotropic mixture refrigerant after partial condensation enters the vortex tube 3 for cold-heat separation, and the medium-pressure low-temperature refrigerant at the outlet of the cold end of the vortex tube 3 enters a condensing side channel of the evaporative condenser 5 and is evaporated and condensed into saturated liquid or supercooled liquid; the medium-pressure high-temperature refrigerant at the outlet of the hot end of the vortex tube 3 enters a condensing pipeline 11 in the second condenser 4 and releases a large amount of heat through the condensing pipeline 11, during this time, the heating line 12 of the user side exchanges heat with the condensing line 11, and absorbs heat emitted from the condensing line 11, thereby meeting the requirement of domestic hot water of users, after the refrigerant after heat release is mixed with the saturated liquid at the liquid outlet end of the vortex tube 3 and the refrigerant at the outlet of the condensing side channel of the evaporative condenser 5, then the refrigerant is throttled and decompressed by a second throttle valve 10, enters an evaporator 6 to absorb heat and evaporate the refrigerant into saturated or superheated refrigerant gas, and is mixed with low-pressure gaseous refrigerant at the outlet of an evaporation side channel of the evaporation condenser 5, the two-phase fluid of the non-azeotropic mixed refrigerant at the outlet of the first condenser 2 is injected into the ejector 7 to complete the whole cycle.
It should be noted that, for the present invention, any two components that are communicated with each other through a pipeline, as shown in fig. 1.
In summary, compared with the prior art, the ejector expansion self-cascade refrigeration system with the vortex tube provided by the invention has a scientific structural design, and the ejector is used for recovering expansion work, so that the energy efficiency ratio of the self-cascade refrigeration system can be improved.
In addition, the ejector expansion self-cascade refrigeration system with the vortex tube, provided by the invention, utilizes the vortex tube to separate cold and heat, and the second condenser is arranged at the outlet of the hot end of the vortex tube, so that heat can be provided for a user end, and the energy utilization rate is improved;
in addition, the ejector expansion self-cascade refrigeration system with the vortex tube provided by the invention has the advantages that the cold end gas of the vortex tube is subjected to heat release and condensation on the high pressure side of the evaporative condenser, then is mixed with the saturated liquid at the liquid outlet end and the refrigerant working medium at the outlet of the second condenser, and then enters the evaporator through the second throttle valve for refrigeration, so that the amount of the liquid refrigerant entering the evaporator is increased.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The utility model provides an ejector inflation is from cascade refrigeration system with vortex tube which characterized in that, includes compressor (1), first condenser (2), vortex tube (3), second condenser (4), evaporative condenser (5), evaporimeter (6), ejector (7), vapour and liquid separator (8), first choke valve (9) and second choke valve (10), wherein:
a refrigerant outlet of the compressor (1) is connected with a refrigerant inlet of the first condenser (2);
a refrigerant outlet of the first condenser (2) is respectively connected with a refrigerant inlet of the vortex tube (3) and a working fluid inlet of the ejector (7);
a cold end gas outlet at the top of the vortex tube (3) is connected with a high-pressure side inlet of the evaporative condenser (5);
a hot end outlet at the bottom of the vortex tube (3) is connected with a refrigerant inlet at the top of the second condenser (4);
a refrigerant outlet at the bottom of the second condenser (4) is respectively connected with a liquid outlet end at the right side of the vortex tube (3) and a high-pressure side outlet of the evaporative condenser (5) after converging through a pipeline, and is connected with one end of a second throttle valve (10);
the other end of the second throttling valve (10) is connected with a refrigerant inlet of the evaporator (6);
the refrigerant outlet of the evaporator (6) is connected with the injection fluid inlet of the ejector (7);
the outlet of the ejector (7) is connected with the refrigerant inlet of the gas-liquid separator (8);
a liquid phase outlet at the bottom of the gas-liquid separator (8) is connected with a low-pressure side inlet of the evaporative condenser (5) through a connecting pipeline provided with a first throttle valve (9);
the low-pressure side inlet and outlet of the evaporative condenser (5) are connected with the injection fluid inlet of the ejector (7);
and a gas phase outlet at the top of the gas-liquid separator (8) is connected with a refrigerant inlet of the compressor (1).
2. The ejector expansion self-cascade refrigeration system with a vortex tube according to claim 1, wherein a high-pressure side inlet of the evaporative condenser (5), and a high-pressure side outlet of the evaporative condenser (5), are connected by a first heat exchange tube;
the first heat exchange tube is positioned inside the evaporative condenser (5).
3. The ejector expansion self-cascade refrigeration system with a vortex tube according to claim 1, wherein a low-pressure side inlet of the evaporative condenser (5), and a low-pressure side outlet of the evaporative condenser (5), are connected through a second heat exchange tube;
and the second heat exchange tube is positioned inside the evaporative condenser (5).
4. The ejector expansion self-cascade refrigeration system with vortex tube according to claim 1, characterized in that the second condenser (4) comprises a condensing line (11);
a refrigerant inlet at the top of the second condenser (4) and a refrigerant outlet at the bottom of the second condenser (4) are respectively communicated with the upper end and the lower end of the condensing pipeline (11).
5. The ejector expansion self-cascade refrigeration system with vortex tube according to claim 1, characterized in that the second condenser (4) comprises a heating circuit (12);
the inlet end at the lower side of the heating pipeline (12) is connected with an external water supply source;
the outlet end at the upper side of the heating pipeline (12) is connected with the water using end of a user through a hollow connecting pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911343405.4A CN110953742A (en) | 2019-12-24 | 2019-12-24 | Ejector expansion self-cascade refrigeration system with vortex tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911343405.4A CN110953742A (en) | 2019-12-24 | 2019-12-24 | Ejector expansion self-cascade refrigeration system with vortex tube |
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| CN110953742A true CN110953742A (en) | 2020-04-03 |
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| CN201911343405.4A Pending CN110953742A (en) | 2019-12-24 | 2019-12-24 | Ejector expansion self-cascade refrigeration system with vortex tube |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001067011A1 (en) * | 2000-03-03 | 2001-09-13 | Vai Holdings, Llc | High efficiency refrigeration system |
| CN102252446A (en) * | 2011-07-08 | 2011-11-23 | 浙江大学 | Ejector-based vortex pipe refrigeration system |
| CN104374109A (en) * | 2014-11-28 | 2015-02-25 | 天津商业大学 | Vortex tube and ejector combined CO2 refrigerating system |
| CN104676943A (en) * | 2015-01-05 | 2015-06-03 | 西安交通大学 | CO2 high-temperature heat pump system |
| CN108106048A (en) * | 2018-01-11 | 2018-06-01 | 西安交通大学 | A kind of injector expansion self-cascade refrigeration system system and the course of work |
| CN211372814U (en) * | 2019-12-24 | 2020-08-28 | 天津商业大学 | Ejector expansion self-cascade refrigeration system with vortex tube |
-
2019
- 2019-12-24 CN CN201911343405.4A patent/CN110953742A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001067011A1 (en) * | 2000-03-03 | 2001-09-13 | Vai Holdings, Llc | High efficiency refrigeration system |
| CN102252446A (en) * | 2011-07-08 | 2011-11-23 | 浙江大学 | Ejector-based vortex pipe refrigeration system |
| CN104374109A (en) * | 2014-11-28 | 2015-02-25 | 天津商业大学 | Vortex tube and ejector combined CO2 refrigerating system |
| CN104676943A (en) * | 2015-01-05 | 2015-06-03 | 西安交通大学 | CO2 high-temperature heat pump system |
| CN108106048A (en) * | 2018-01-11 | 2018-06-01 | 西安交通大学 | A kind of injector expansion self-cascade refrigeration system system and the course of work |
| CN211372814U (en) * | 2019-12-24 | 2020-08-28 | 天津商业大学 | Ejector expansion self-cascade refrigeration system with vortex tube |
Non-Patent Citations (1)
| Title |
|---|
| 赵家华;宁静红;: "涡流管膨胀降压的R290制冷系统性能分析", 上海节能, no. 08, 31 August 2016 (2016-08-31), pages 459 - 462 * |
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