CN111141043A - Screw compression overlapping combined system for injection air supplement - Google Patents
Screw compression overlapping combined system for injection air supplement Download PDFInfo
- Publication number
- CN111141043A CN111141043A CN202010069464.3A CN202010069464A CN111141043A CN 111141043 A CN111141043 A CN 111141043A CN 202010069464 A CN202010069464 A CN 202010069464A CN 111141043 A CN111141043 A CN 111141043A
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- China
- Prior art keywords
- evaporator
- ejector
- outlet
- gas
- temperature
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000002347 injection Methods 0.000 title claims abstract description 24
- 239000007924 injection Substances 0.000 title claims abstract description 24
- 239000013589 supplement Substances 0.000 title claims abstract description 17
- 230000006835 compression Effects 0.000 title claims abstract description 10
- 238000007906 compression Methods 0.000 title claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 45
- 239000012530 fluid Substances 0.000 claims abstract description 31
- 238000009833 condensation Methods 0.000 claims abstract description 11
- 230000005494 condensation Effects 0.000 claims abstract description 11
- 238000009792 diffusion process Methods 0.000 claims description 13
- 238000001816 cooling Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 230000001502 supplementing effect Effects 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
- F25B1/04—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type
- F25B1/047—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type of screw type
-
- 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
- F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
-
- 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
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)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention discloses a screw compression cascade combined system for injection air supplement, wherein one path of a condenser outlet connected with a high-temperature circulation screw compressor is connected with a main fluid inlet of a first injector, the two paths of the condenser outlet are respectively connected with a high-temperature circulation gas-liquid separator and a condensation evaporator connected with a low-temperature circulation screw compressor, a main fluid inlet of a second injector and an inlet of a first evaporator are respectively connected with a gas-liquid outlet of the high-temperature circulation gas-liquid separator, gas outlets of the first evaporator and the condensation evaporator are respectively connected with injection fluid inlets of the first injector and the second injector, and a low-temperature outlet of the condensation evaporator is respectively connected with a main fluid inlet of a third injector, the low-temperature; the gas outlets of the second evaporator and the third evaporator are respectively connected with the injection fluid inlets of the third ejector and the fourth ejector, and the main fluid inlet of the fourth ejector and the inlet of the second evaporator are respectively connected with the gas-liquid outlet of the low-temperature circulating gas-liquid separator; the outlets of the four ejectors are respectively connected with the air suction port and the air supplement port of the two screw compressors. The invention realizes the cooling and heating of multiple temperature zones.
Description
Technical Field
The invention relates to the technical field of refrigeration, in particular to a screw compression cascade combination system for injection air supplement.
Background
Energy waste and resource shortage are problems commonly faced by the current society, and how to efficiently and reasonably utilize energy is a problem to be solved urgently because a refrigeration air-conditioning system needs to consume energy.
Disclosure of Invention
The invention aims to provide a screw compression cascade combination system for injecting, injecting and supplementing air aiming at the defects of the prior art.
The technical scheme adopted for realizing the purpose of the invention is as follows:
the invention relates to a screw compression cascade combined system for injection air supplement, which comprises a high-temperature circulation screw compressor and a condenser, wherein the inlet of the condenser is connected with the outlet of the high-temperature circulation screw compressor; the liquid outlet of the high-temperature circulating gas-liquid separator is connected with the liquid inlet of the first evaporator, the gas outlet of the first evaporator is connected with the injection fluid inlet of the first ejector, and the diffusion outlet of the first ejector is connected with the air supplement port of the high-temperature circulating screw compressor; the gas outlet of the high-temperature circulating gas-liquid separator is connected with the main fluid inlet of the second ejector, the diffusion outlet of the second ejector is connected with the air suction port of the screw compressor, and the high-temperature working medium gas outlet of the condensation evaporator is connected with the injection inlet of the second ejector;
the low-temperature working medium inlet of the condensation evaporator is connected with the outlet of the low-temperature circulating screw compressor, the low-temperature working medium outlet of the condensation evaporator is divided into three paths, the first path is connected with the main fluid inlet of the third ejector, the second path is connected with the mixed fluid inlet of the low-temperature circulating gas-liquid separator through the third throttle valve, and the third path is connected with the inlet of the third evaporator through the fourth throttle valve; a liquid outlet of the low-temperature circulating gas-liquid separator is connected with a liquid inlet of the second evaporator, a gas outlet of the second evaporator is connected with an injection fluid inlet of the third ejector, and a diffusion outlet of the third ejector is connected with an air supplement port of the low-temperature circulating screw compressor; the gas outlet of the low-temperature circulating gas-liquid separator is connected with the main fluid inlet of the fourth ejector, the diffusion outlet of the fourth ejector is connected with the air suction port of the low-temperature circulating screw compressor, and the low-temperature working medium gas outlet of the third evaporator is connected with the injection inlet of the fourth ejector.
According to the screw compression cascade combined system for injection air supplement, the air supplement port is axially formed in the cylinder of the high-low temperature circulation screw compressor body, and the gas formed by heat absorption and evaporation of refrigerant liquid in the evaporator is injected by the injector to perform intermediate air supplement, so that multi-temperature-zone cold and heat supply can be realized, the thermal performance of the combined system is effectively improved, and the energy consumption is saved.
Drawings
FIG. 1 is a schematic view of a screw compression cascade combination system for injection air make-up according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
As shown in figure 1, the screw compression overlapping combination system for injecting, injecting and air supplementing comprises:
the system comprises a high-temperature circulating screw compressor 1, a condenser 2, a high-temperature circulating gas-liquid separator 3, a first throttle valve 4, a condensing evaporator 5, a second throttle valve 6, a third throttle valve 7, a fourth throttle valve 8, a low-temperature circulating gas-liquid separator 9, a second evaporator 10, a third ejector 11, a third evaporator 12, a fourth ejector 13, a second ejector 14, a low-temperature circulating screw compressor 15, a first ejector 16 and a first evaporator 17.
The outlet of the high-temperature circulating screw compressor 1 is connected with the inlet of the condenser 2, the outlet of the condenser 2 is divided into three paths, the first path is connected with the main fluid inlet of the first ejector 16, the second path is connected with the mixed fluid inlet of the high-temperature circulating gas-liquid separator 3 through the first throttle valve 4, and the third path is connected with the high-temperature working medium inlet of the condensing evaporator 5 through the second throttle valve 6; a liquid outlet of the high-temperature circulating gas-liquid separator 3 is connected with a liquid inlet of a first evaporator 17, a gas outlet of the first evaporator 17 is connected with an injection fluid inlet of a first ejector 16, and a diffusion outlet of the first ejector 16 is connected with an air supplement port of the high-temperature circulating screw compressor 1; the gas outlet of the high-temperature circulating gas-liquid separator 3 is connected with the main fluid inlet of the second ejector 14, the diffusion outlet of the second ejector 14 is connected with the air suction port of the screw compressor 13, and the high-temperature working medium gas outlet of the condensing evaporator 5 is connected with the injection inlet of the second ejector 14.
The outlet of the low-temperature circulating screw compressor 15 is connected with the low-temperature working medium inlet of the condensing evaporator 5, the low-temperature working medium outlet of the condensing evaporator 5 is divided into three paths, the first path is connected with the main fluid inlet of the third ejector 11, the second path is connected with the mixed fluid inlet of the low-temperature circulating gas-liquid separator 9 through the third throttle valve 7, and the third path is connected with the inlet of the third evaporator 12 through the fourth throttle valve 8; a liquid outlet of the low-temperature circulating gas-liquid separator 9 is connected with a liquid inlet of a second evaporator 10, a gas outlet of the second evaporator 10 is connected with an injection fluid inlet of a third ejector 11, and a diffusion outlet of the third ejector 11 is connected with an air supplement port of the low-temperature circulating screw compressor 1; the gas outlet of the low-temperature circulating gas-liquid separator 9 is connected with the main fluid inlet of the fourth ejector 13, the diffusion outlet of the fourth ejector 13 is connected with the air suction port of the low-temperature circulating screw compressor 15, and the low-temperature working medium gas outlet of the evaporator 12 is connected with the injection inlet of the fourth ejector 13.
The first ejector, the second ejector, the third ejector and the fourth ejector are ejectors with the same structure or ejectors with different structures.
The first ejector, the second ejector, the third ejector and the fourth ejector can be single injection fluid inlet ejectors and respectively comprise a main fluid inlet, a diffusion outlet and an injection fluid inlet.
In the invention, the air supplementing port is axially arranged on the cylinder of the high-low temperature circulating screw compressor body, and the ejector ejects gas formed by heat absorption and evaporation of refrigerant liquid in the evaporator to perform intermediate air supplementing, so that multi-temperature-zone cooling and heating can be realized, and the thermal performance of the combined system is effectively improved.
When the system is operated, high-temperature and high-pressure gas discharged by the high-temperature circulating screw compressor 1 enters the condenser 2, and liquid which is subjected to heat exchange with a cooling medium, emits heat and is condensed is divided into three paths: the first path enters a first ejector 16 for ejection depressurization, is used for ejecting gas formed by heat absorption and evaporation in a first evaporator 17, is mixed and diffused, enters a cylinder of the high-temperature circulating screw compressor 1 through an air supplement port of the high-temperature circulating screw compressor 1 and is continuously compressed; the second path enters a high-temperature circulating gas-liquid separator 3 through throttling and pressure reduction of a first throttle valve 4, the separated gas enters a second ejector 14 to jet the high-temperature circulating gas in a pressure reduction injection condensation evaporator 5, the gas enters a screw compressor 1 through an air suction port after mixing and pressure expansion, and the separated liquid enters a first evaporator 17 to absorb the heat of a cooled space; the third path enters the condensing evaporator 5 through a second throttling valve 6.
The gas discharged from the low-temperature circulating screw compressor 15 enters the condensing evaporator 5 to exchange heat with the high-temperature circulating working medium to discharge heat and condense the liquid, and the liquid is divided into three paths: the first path enters a third ejector 11 for ejection depressurization, is used for ejecting gas formed by heat absorption and evaporation in the second evaporator 10, is mixed and diffused, enters a cylinder of the low-temperature circulating screw compressor 15 through an air supplement port of the low-temperature circulating screw compressor 15 and is continuously compressed; the second path enters a low-temperature circulating gas-liquid separator 9 through throttling and pressure reduction of a third throttle valve 7, the separated gas enters a fourth ejector 13 to jet the low-temperature circulating gas in a third evaporator 12 in a pressure reduction mode, the gas is mixed and expanded and then enters a low-temperature circulating screw compressor 15 through a gas suction port, and the separated liquid enters a second evaporator 10 to absorb heat of a cooled space; the third path enters a third evaporator 12 after being throttled and depressurized by a fourth throttle valve 8, and absorbs the heat of the cooled space.
In the invention, the first evaporator 17, the second evaporator 10 and the third evaporator 12 of the system can realize refrigeration at three temperatures, and the condenser 2 can supply heat.
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 (1)
1. The screw compression cascade combined system comprises a high-temperature circulation screw compressor and a condenser, wherein the inlet of the condenser is connected with the outlet of the high-temperature circulation screw compressor, the outlet of the condenser is divided into three paths, the first path is connected with the main fluid inlet of a first ejector, the second path is connected with the mixed fluid inlet of a high-temperature circulation gas-liquid separator through a first throttling valve, and the third path is connected with the high-temperature working medium inlet of a condensation evaporator through a second throttling valve; the liquid outlet of the high-temperature circulating gas-liquid separator is connected with the liquid inlet of the first evaporator, the gas outlet of the first evaporator is connected with the injection fluid inlet of the first ejector, and the diffusion outlet of the first ejector is connected with the air supplement port of the high-temperature circulating screw compressor; the gas outlet of the high-temperature circulating gas-liquid separator is connected with the main fluid inlet of the second ejector, the diffusion outlet of the second ejector is connected with the air suction port of the screw compressor, and the high-temperature working medium gas outlet of the condensation evaporator is connected with the injection inlet of the second ejector;
the low-temperature working medium inlet of the condensation evaporator is connected with the outlet of the low-temperature circulating screw compressor, the low-temperature working medium outlet of the condensation evaporator is divided into three paths, the first path is connected with the main fluid inlet of the third ejector, the second path is connected with the mixed fluid inlet of the low-temperature circulating gas-liquid separator through the third throttle valve, and the third path is connected with the inlet of the third evaporator through the fourth throttle valve; a liquid outlet of the low-temperature circulating gas-liquid separator is connected with a liquid inlet of the second evaporator, a gas outlet of the second evaporator is connected with an injection fluid inlet of the third ejector, and a diffusion outlet of the third ejector is connected with an air supplement port of the low-temperature circulating screw compressor; the gas outlet of the low-temperature circulating gas-liquid separator is connected with the main fluid inlet of the fourth ejector, the diffusion outlet of the fourth ejector is connected with the air suction port of the low-temperature circulating screw compressor, and the low-temperature working medium gas outlet of the third evaporator is connected with the injection inlet of the fourth ejector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010069464.3A CN111141043B (en) | 2020-01-21 | 2020-01-21 | Screw compression cascade combination system for injection air supplement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010069464.3A CN111141043B (en) | 2020-01-21 | 2020-01-21 | Screw compression cascade combination system for injection air supplement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111141043A true CN111141043A (en) | 2020-05-12 |
| CN111141043B CN111141043B (en) | 2024-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010069464.3A Active CN111141043B (en) | 2020-01-21 | 2020-01-21 | Screw compression cascade combination system for injection air supplement |
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| Country | Link |
|---|---|
| CN (1) | CN111141043B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113280524A (en) * | 2021-05-31 | 2021-08-20 | 哈尔滨工业大学 | Large temperature difference heat exchange system provided with multiple ejectors |
Citations (7)
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|---|---|---|---|---|
| JP2001221517A (en) * | 2000-02-10 | 2001-08-17 | Sharp Corp | Supercritical refrigeration cycle |
| US20140083124A1 (en) * | 2011-08-04 | 2014-03-27 | Mitsubishi Electric Corporation | Refrigeration apparatus |
| CN103954069A (en) * | 2014-05-14 | 2014-07-30 | 浙江大学宁波理工学院 | Multi-heat source jet type refrigerator |
| JP2014190581A (en) * | 2013-03-26 | 2014-10-06 | Toho Gas Co Ltd | Direct expansion cooling device |
| CN108375233A (en) * | 2018-04-19 | 2018-08-07 | 天津商业大学 | A kind of folding type cooling system with backheat and injection decompression |
| CN109682101A (en) * | 2019-01-28 | 2019-04-26 | 天津商业大学 | Three warm cold supply systems of the direct condensation by contact with injector |
| CN211823231U (en) * | 2020-01-21 | 2020-10-30 | 天津商业大学 | Screw compression overlapping combined system for injection air supplement |
-
2020
- 2020-01-21 CN CN202010069464.3A patent/CN111141043B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001221517A (en) * | 2000-02-10 | 2001-08-17 | Sharp Corp | Supercritical refrigeration cycle |
| US20140083124A1 (en) * | 2011-08-04 | 2014-03-27 | Mitsubishi Electric Corporation | Refrigeration apparatus |
| JP2014190581A (en) * | 2013-03-26 | 2014-10-06 | Toho Gas Co Ltd | Direct expansion cooling device |
| CN103954069A (en) * | 2014-05-14 | 2014-07-30 | 浙江大学宁波理工学院 | Multi-heat source jet type refrigerator |
| CN108375233A (en) * | 2018-04-19 | 2018-08-07 | 天津商业大学 | A kind of folding type cooling system with backheat and injection decompression |
| CN109682101A (en) * | 2019-01-28 | 2019-04-26 | 天津商业大学 | Three warm cold supply systems of the direct condensation by contact with injector |
| CN211823231U (en) * | 2020-01-21 | 2020-10-30 | 天津商业大学 | Screw compression overlapping combined system for injection air supplement |
Non-Patent Citations (1)
| Title |
|---|
| 王林;谈莹莹;梁坤峰;崔晓龙;: "一种新型自复叠制冷循环特性研究", 工程热物理学报, no. 06, 15 June 2012 (2012-06-15), pages 921 - 924 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113280524A (en) * | 2021-05-31 | 2021-08-20 | 哈尔滨工业大学 | Large temperature difference heat exchange system provided with multiple ejectors |
| CN113280524B (en) * | 2021-05-31 | 2022-06-10 | 哈尔滨工业大学 | Large temperature difference heat exchange system provided with multiple ejectors |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111141043B (en) | 2024-06-04 |
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Effective date of registration: 20241031 Address after: 509 Kangrui Times Square, Keyuan Business Building, 39 Huarong Road, Gaofeng Community, Dalang Street, Longhua District, Shenzhen, Guangdong Province, 518000 Patentee after: Shenzhen lizhuan Technology Transfer Center Co.,Ltd. Country or region after: China Address before: 409 Guangrong Road, Beichen District, Tianjin Patentee before: TIANJIN University OF COMMERCE Country or region before: China |
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Effective date of registration: 20241101 Address after: Room B, 25th Floor, Building B, Changshi Zhongdeng Building, No. 138-1 Weiyang Road, Xi'an Economic and Technological Development Zone, Shaanxi Province 710000 Patentee after: Shaanxi Yulong Technology Co.,Ltd. Country or region after: China Address before: 509 Kangrui Times Square, Keyuan Business Building, 39 Huarong Road, Gaofeng Community, Dalang Street, Longhua District, Shenzhen, Guangdong Province, 518000 Patentee before: Shenzhen lizhuan Technology Transfer Center Co.,Ltd. Country or region before: China |