CN115289702B - Heat exchange system - Google Patents
Heat exchange system Download PDFInfo
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- CN115289702B CN115289702B CN202211020177.9A CN202211020177A CN115289702B CN 115289702 B CN115289702 B CN 115289702B CN 202211020177 A CN202211020177 A CN 202211020177A CN 115289702 B CN115289702 B CN 115289702B
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- heat exchange
- evaporator
- exchange system
- condenser
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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
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
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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
- F25B41/42—Arrangements for diverging or converging flows, e.g. branch lines or junctions
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- 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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- 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)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention provides a heat exchange system which comprises a compressor, a vortex tube, a first condenser, a first injection mechanism, a first evaporator and a gas-liquid separator, wherein an inlet of the vortex tube is communicated with an exhaust port of the compressor. According to the heat exchange system provided by the invention, the throttle valve used in the prior art is replaced by the first injection mechanism and the second injection mechanism, so that the throttle loss is effectively reduced, the heat exchange performance of the heat exchange system is effectively improved, meanwhile, the vortex effect of the vortex tube is utilized to split the exhaust of the compressor, so that the condenser can provide higher heat exchange efficiency under constant exhaust pressure, meanwhile, the temperature of the refrigerant entering the evaporator is further reduced, the heat exchange efficiency of the evaporator is increased, and meanwhile, the plurality of evaporators are arranged, so that the requirements of multi-temperature-area refrigeration, air conditioning adjustment, domestic hot water and the like are met, and the application range of the heat exchange system is improved.
Description
Technical Field
The invention relates to the technical field of heat exchange, in particular to a heat exchange system.
Background
Along with the progress of science and technology, the living standard of people is improved, and the energy consumption is also increased. Building energy consumption has become a huge energy consumption, wherein the energy consumption in the heating ventilation and air conditioning industry accounts for the majority. Under the background of 'carbon reaching peak, carbon neutralization', energy conservation and emission reduction are urgent.
In the traditional vapor compression refrigeration system, refrigeration is realized by adopting single-stage compression circulation, when the indoor and outdoor temperature difference is large, the compression ratio provided by the compressor is too small, so that the volumetric efficiency of the compressor is reduced, the throttling loss is increased, the exhaust temperature is too high, the refrigeration (or heating) capacity is reduced, the operation energy efficiency is reduced, and the expansion valve is adopted for throttling and depressurization in the system, so that the mechanical energy loss is caused after the high-pressure working medium is throttled, and the system performance is influenced.
Disclosure of Invention
In order to solve the technical problem that the steam heat exchange system in the prior art has throttling loss to influence the system performance, the heat exchange system provided with the vortex tube and the ejector to overcome the throttling loss is provided.
The utility model provides a heat transfer system, includes compressor, vortex tube, first condenser, first injection mechanism, first evaporimeter and vapour and liquid separator, the entry of vortex tube with the gas vent intercommunication of compressor, the hot junction export of vortex tube passes through first condenser with vapour and liquid separator's refrigerant entry intercommunication, the cold junction export of vortex tube with first injection mechanism's main injection mouth intercommunication, first injection mechanism's export with vapour and liquid separator's refrigerant entry intercommunication, first injection mechanism's by the injection mouth with first evaporimeter intercommunication, first evaporimeter pass through first throttle mechanism with vapour and liquid separator's liquid refrigerant export intercommunication, vapour and liquid separator's gaseous refrigerant export with the induction port intercommunication of compressor.
The heat exchange system further comprises a second injection mechanism and a second evaporator, a main injection port of the second injection mechanism is communicated with the condenser, an injected port of the second injection mechanism is communicated with the second evaporator, an outlet of the second injection mechanism is communicated with a refrigerant inlet of the gas-liquid separator, and the second evaporator is communicated with a liquid refrigerant outlet of the gas-liquid separator.
The heat exchange system further comprises an economizer and a second throttling mechanism, the economizer is provided with a main pipeline and an auxiliary pipeline which exchange heat with each other, one end of the main pipeline is connected to the first condenser, the other end of the main pipeline is connected to a main injection port of the second injection mechanism, one end of the auxiliary pipeline is connected to the first condenser through the second throttling mechanism, and the other end of the auxiliary pipeline is connected to a gas supplementing port of the compressor.
The heat exchange system further comprises a third evaporator, a third condenser and a driving mechanism, wherein the third evaporator, the third condenser and the driving mechanism are sequentially communicated to form a heat exchange cycle, and the third condenser exchanges heat with liquid refrigerant in the gas-liquid separator.
And a heat exchange coil is arranged in the gas-liquid separator, and the heat exchange coil forms the third condenser.
The refrigerant in the heat exchange cycle comprises water or glycol solution.
The heat exchange system further includes a refrigeration mechanism, the first evaporator being located within the refrigeration mechanism.
The heat exchange system further comprises a refrigeration mechanism, and the second evaporator is positioned in the refrigeration mechanism.
The heat exchange system further comprises a water heating mechanism, and the water heating mechanism is communicated with the first condenser.
The refrigerant in the heat exchange system comprises water vapor.
According to the heat exchange system provided by the invention, the throttle valve used in the prior art is replaced by the first injection mechanism and the second injection mechanism, so that the throttle loss is effectively reduced, the heat exchange performance of the heat exchange system is effectively improved, meanwhile, the vortex effect of the vortex tube is utilized to split the exhaust of the compressor, so that the condenser can provide higher heat exchange efficiency under constant exhaust pressure, meanwhile, the temperature of the refrigerant entering the evaporator is further reduced, the heat exchange efficiency of the evaporator is increased, and meanwhile, the plurality of evaporators are arranged, so that the requirements of multi-temperature-area refrigeration, air conditioning adjustment, domestic hot water and the like are met, and the application range of the heat exchange system is improved.
Drawings
Fig. 1 is a schematic structural diagram of a heat exchange system according to an embodiment of the present invention;
In the figure:
1. A compressor; 2, a vortex tube, 3, a first condenser, 4, a first injection mechanism, 5, a first evaporator, 6, a gas-liquid separator, 7, a second injection mechanism, 8, a second evaporator, 9, an economizer, 10, a second throttling mechanism, 11, a third evaporator, 12, a third condenser, 13, a driving mechanism, 14 and a first throttling mechanism.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The heat exchange system shown in fig. 1 comprises a compressor 1, a vortex tube 2, a first condenser 3, a first injection mechanism 4, a first evaporator 5 and a gas-liquid separator 6, wherein an inlet of the vortex tube 2 is communicated with an exhaust port of the compressor 1, a hot end outlet of the vortex tube 2 is communicated with a refrigerant inlet of the gas-liquid separator 6 through the first condenser 3, a cold end outlet of the vortex tube 2 is communicated with a main injection port of the first injection mechanism 4, an outlet of the first injection mechanism 4 is communicated with a refrigerant inlet of the gas-liquid separator 6, an injected port of the first injection mechanism 4 is communicated with the first evaporator 5, the first evaporator 5 is communicated with a liquid refrigerant outlet of the gas-liquid separator 6 through a first throttling mechanism 14, and a gaseous refrigerant outlet of the gas-liquid separator 6 is communicated with an air suction port of the compressor 1. Utilize first injection mechanism 4 and second injection mechanism to replace the choke valve that uses among the prior art to effectual reduction throttling loss, effectual promotion heat transfer system's heat transfer performance utilizes vortex tube 2's vortex effect simultaneously, shunts the exhaust of compressor 1, makes under invariable exhaust pressure, and condensing mechanism (first condenser 3) can provide higher heat exchange efficiency, and the refrigerant temperature that gets into evaporating mechanism simultaneously further reduces, increases evaporating mechanism (first evaporator 5) heat exchange efficiency.
Specifically, the refrigerant discharged from the exhaust port of the compressor 1 is divided into a cold stream and a hot stream under the action of the vortex tube 2, one stream of refrigerant is discharged into the first condenser 3 from the hot end outlet for condensation and heat release, the refrigerant after heat exchange flows back into the gas-liquid separator 6, the other stream of refrigerant enters the main injection port of the first injection mechanism 4 from the cold end outlet and flows back into the gas-liquid separator 6 through the outlet of the first injection mechanism 4, meanwhile, negative pressure is generated at the injected port of the first injection mechanism 4 to suck the liquid refrigerant in the gas-liquid separator 6 into the first evaporator 5 for heat exchange, and the refrigerant after heat exchange through the first evaporator 5 flows back into the gas-liquid separator 6 under the action of the first injection mechanism 4, so that the whole heat exchange cycle of the heat exchange system is completed. Wherein the temperature of the refrigerant exiting the hot side outlet is higher than the temperature of the refrigerant exiting the cold side outlet, the first condenser 3 is capable of providing a higher heat exchange efficiency, while the temperature of the refrigerant entering the first evaporator 5 is further reduced relative to the prior art, increasing the heat exchange efficiency of the first evaporator 5.
Optionally, the heat exchange system further includes a second injection mechanism 7 and a second evaporator 8, a main injection port of the second injection mechanism 7 is communicated with the condenser, an injected port of the second injection mechanism 7 is communicated with the second evaporator 8, an outlet of the second injection mechanism 7 is communicated with a refrigerant inlet of the gas-liquid separator 6, and the second evaporator 8 is communicated with a liquid refrigerant outlet of the gas-liquid separator 6. The refrigerant flowing into the gas-liquid separator 6 from the first condenser 3 is utilized to inject the refrigerant subjected to heat exchange in the second evaporator 8 into the gas-liquid separator 6, so that the second evaporator 8 can obtain liquid refrigerant from the gas-liquid separator 6 for heat exchange, and the refrigerant subjected to heat exchange flows back into the gas-liquid separator 6 to complete heat exchange circulation.
Optionally, the heat exchange system further includes an economizer 9 and a second throttling mechanism 10, the economizer 9 has a main pipeline and an auxiliary pipeline that exchange heat with each other, one end of the main pipeline is connected to the first condenser 3, the other end of the main pipeline is connected to a main injection port of the second injection mechanism 7, one end of the auxiliary pipeline is connected to the first condenser 3 through the second throttling mechanism 10, and the other end of the auxiliary pipeline is connected to a gas supplementing port of the compressor 1. The economizer 9 is utilized to supplement air and increase enthalpy for the compressor 1, so that the heat exchange capacity of the heat exchange system is further improved, the operation energy efficiency ratio is improved, and the adaptability of the heat exchange system to indoor and outdoor temperature difference is further improved.
Preferably, the economizer 9 is a plate heat exchanger or a double pipe heat exchanger.
In order to enable the heat exchange system to achieve the effect of multi-temperature-zone heat exchange, the heat exchange system further comprises a third evaporator 11, a third condenser 12 and a driving mechanism 13, wherein the third evaporator 11, the third condenser 12 and the driving mechanism 13 are sequentially communicated to form a heat exchange cycle, and the third condenser 12 exchanges heat with the liquid refrigerant in the gas-liquid separator 6. The refrigerant in the heat exchange cycle flows between the third evaporator 11 and the third condenser 12 under the drive of the drive mechanism 13, and the third condenser 12 can exchange heat with the liquid refrigerant in the gas-liquid separator 6, so that the refrigerant in the heat exchange cycle can release heat at the third condenser 12 and absorb heat at the third evaporator 11, thereby realizing the heat exchange effect. Wherein the drive mechanism 13 is a power pump.
Simultaneously, the first evaporator 5, the second evaporator 8 and the third evaporator 11 can exchange heat for three areas according to the requirement, so that the heat exchange effect of the heat exchange system on the multi-temperature areas is realized. Of course, in order to further increase the number of temperature zones, a plurality of sets of third evaporators 11, third condensers and driving mechanisms 13 may be optionally provided, and heat exchange for a plurality of temperature zones may be achieved by a plurality of third evaporators 11.
Preferably, the first evaporator 5 is a main evaporator, which mainly plays a role of ensuring the normal operation of the compressor 1, and is a low-temperature evaporator relative to the temperatures of the second evaporator 8 and the third evaporator 11, the second evaporator 8 is still connected in series in the heat exchange cycle where the compressor 1 is located, so that the temperature of the second evaporator is higher relative to the temperature of the third evaporator 11, and the third evaporator 11 is a surface cooler.
For this purpose, the heat exchange system further comprises a refrigeration mechanism, within which the second evaporator 8 is located, the refrigeration function being achieved by means of the second evaporator 8. Similarly, the heat exchange system further comprises a freezing mechanism, and the first evaporator 5 is located in the freezing mechanism. The freezing function is achieved by means of the first evaporator 5.
A heat exchange coil is arranged in the gas-liquid separator 6, and the heat exchange coil forms the third condenser 12. That is, the gas-liquid separator 6 may be a shell-and-tube heat exchanger, and part or all of the heat exchange coils are below the liquid surface of the shell-and-tube heat exchanger, so that the effect that the refrigerant in the heat exchange coils is cooled is achieved.
The refrigerant in the heat exchange cycle comprises water or glycol solution.
The heat exchange system further comprises a water heating mechanism which is communicated with the first condenser 3. By utilizing the vortex effect of the vortex tube 2, the heat exchange system can provide a higher heat exchange effect for the first condenser 3 under constant exhaust pressure, so that hot water with higher temperature can be produced.
The refrigerant in the heat exchange system comprises water vapor.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (9)
1. A heat exchange system is characterized by comprising a compressor (1), a vortex tube (2), a first condenser (3), a first injection mechanism (4), a first evaporator (5) and a gas-liquid separator (6), wherein an inlet of the vortex tube (2) is communicated with an exhaust port of the compressor (1), a hot end outlet of the vortex tube (2) is communicated with a refrigerant inlet of the gas-liquid separator (6) through the first condenser (3), a cold end outlet of the vortex tube (2) is communicated with a main injection port of the first injection mechanism (4), an outlet of the first injection mechanism (4) is communicated with a refrigerant inlet of the gas-liquid separator (6), an injected port of the first injection mechanism (4) is communicated with the first evaporator (5), a gaseous refrigerant outlet of the gas-liquid separator (6) is communicated with a liquid refrigerant outlet of the gas-liquid separator (6) through a first throttling mechanism (14), a gaseous refrigerant outlet of the gas-liquid separator (6) is communicated with a main injection port of the compressor (7), the second injection mechanism (7) is communicated with a second injection mechanism (7) which is communicated with the second evaporator (8), the outlet of the second injection mechanism (7) is communicated with the refrigerant inlet of the gas-liquid separator (6), and the second evaporator (8) is communicated with the liquid refrigerant outlet of the gas-liquid separator (6).
2. The heat exchange system according to claim 1, wherein the heat exchange system further comprises an economizer (9) and a second throttling mechanism (10), the economizer (9) is provided with a main pipeline and an auxiliary pipeline which exchange heat with each other, one end of the main pipeline is connected to the first condenser (3), the other end of the main pipeline is connected to a main injection port of the second injection mechanism (7), one end of the auxiliary pipeline is connected to the first condenser (3) through the second throttling mechanism (10), and the other end of the auxiliary pipeline is connected to a gas supplementing port of the compressor (1).
3. The heat exchange system as set forth in claim 1, further comprising a third evaporator (11), a third condenser (12) and a driving mechanism (13), wherein the third evaporator (11), the third condenser (12) and the driving mechanism (13) are sequentially communicated to form a heat exchange cycle, and the third condenser (12) exchanges heat with the liquid refrigerant in the gas-liquid separator (6).
4. A heat exchange system according to claim 3, wherein a heat exchange coil is arranged in the gas-liquid separator (6), said heat exchange coil constituting the third condenser (12).
5. The heat exchange system as set forth in claim 3, wherein the refrigerant in the heat exchange cycle comprises water or a glycol solution.
6. The heat exchange system according to claim 1, further comprising a freezing mechanism, wherein the first evaporator (5) is located within the freezing mechanism.
7. The heat exchange system according to claim 1, further comprising a refrigeration mechanism, wherein the second evaporator (8) is located within the refrigeration mechanism.
8. The heat exchange system according to claim 1, further comprising a water heating mechanism in communication with the first condenser (3).
9. The heat exchange system as set forth in claim 1, wherein the refrigerant in the heat exchange system comprises water vapor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211020177.9A CN115289702B (en) | 2022-08-24 | 2022-08-24 | Heat exchange system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211020177.9A CN115289702B (en) | 2022-08-24 | 2022-08-24 | Heat exchange system |
Publications (2)
| Publication Number | Publication Date |
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| CN115289702A CN115289702A (en) | 2022-11-04 |
| CN115289702B true CN115289702B (en) | 2024-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211020177.9A Active CN115289702B (en) | 2022-08-24 | 2022-08-24 | Heat exchange system |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116465116B (en) * | 2023-04-23 | 2024-10-11 | 珠海格力电器股份有限公司 | Heat exchange system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104676943A (en) * | 2015-01-05 | 2015-06-03 | 西安交通大学 | A CO2 high temperature heat pump system |
| CN205690728U (en) * | 2016-06-14 | 2016-11-16 | 安徽省君杰新能源科技有限公司 | A kind of compound computer-room air conditioning system |
| CN218120237U (en) * | 2022-08-24 | 2022-12-23 | 珠海格力电器股份有限公司 | heat exchange system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252446B (en) * | 2011-07-08 | 2012-09-05 | 浙江大学 | Ejector-based vortex pipe refrigeration system |
| JP2013036684A (en) * | 2011-08-08 | 2013-02-21 | Fujitsu General Ltd | Refrigeration cycle device |
| CN110940105A (en) * | 2019-12-24 | 2020-03-31 | 天津商业大学 | Self-cascade refrigeration system combining ejector and vortex tube |
| CN211575585U (en) * | 2019-12-24 | 2020-09-25 | 天津商业大学 | Take expanded vortex tube refrigerating system of sprayer |
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2022
- 2022-08-24 CN CN202211020177.9A patent/CN115289702B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104676943A (en) * | 2015-01-05 | 2015-06-03 | 西安交通大学 | A CO2 high temperature heat pump system |
| CN205690728U (en) * | 2016-06-14 | 2016-11-16 | 安徽省君杰新能源科技有限公司 | A kind of compound computer-room air conditioning system |
| CN218120237U (en) * | 2022-08-24 | 2022-12-23 | 珠海格力电器股份有限公司 | heat exchange system |
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