CN102230681B - Zero-superheat-degree running refrigerating system at evaporator outlet - Google Patents
Zero-superheat-degree running refrigerating system at evaporator outlet Download PDFInfo
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- CN102230681B CN102230681B CN 201110158386 CN201110158386A CN102230681B CN 102230681 B CN102230681 B CN 102230681B CN 201110158386 CN201110158386 CN 201110158386 CN 201110158386 A CN201110158386 A CN 201110158386A CN 102230681 B CN102230681 B CN 102230681B
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Abstract
The invention discloses a zero-superheat-degree running refrigerating system at an evaporator outlet. The refrigerating system comprises a compressor, a main evaporator, a condenser, an economizer, an ejector, a gas-liquid separator and an auxiliary evaporator, wherein in the ejector, the pressure difference between intermediate-pressure flash steam generated by the economizer and the air suction port of the compressor is taken as ejecting power to drive the refrigerating system for performing secondary evaporation on a liquid-state refrigerant separated from a refrigerant at the evaporator outlet by using the gas-liquid separator. By adopting the refrigerating system, the main evaporator can run efficiently without the superheat degree of the outlet refrigerant, the non-evaporated liquid-state refrigerant is separated out and fully evaporated in the auxiliary evaporator, and a higher refrigerating efficiency is achieved.
Description
Technical field
The present invention relates to compressed steam formula refrigeration system, specifically is the refrigeration system of a kind of evaporator outlet zero degree of superheat.
Background technology
All have an appointment 5～10 ℃ the degree of superheat of the gaseous coolant of dry evaporator that refrigeration system generally adopts outlet; Cause that there is bigger flow resistance in the refrigerant in the evaporimeter at superheat section; This makes compressor air suction pressure must be lower than the evaporating pressure in the evaporimeter, causes refrigeration system to have tangible loss in efficiency.Therefore reducing the evaporator outlet refrigerant degree of superheat can significantly improve refrigeration system efficient; Measure commonly used comprises adopts electric expansion valve to reduce the degree of superheat or employing flooded evaporator, downward film evaporator etc.; But the equal cost of these schemes is higher; Or be of limited application, all there is certain limitation.
Summary of the invention
The technical problem that the present invention will solve provides the refrigeration system of a kind of evaporator outlet zero degree of superheat, solves the problem that there is the degree of superheat in existing evaporator outlet refrigerant.
Technical scheme of the present invention is:
The refrigeration system of a kind of evaporator outlet zero degree of superheat operation comprises compressor, main evaporator, condenser, economizer, injector, gas-liquid separator and auxiliary evaporator; The gas outlet of described compressor is communicated with the air inlet of condenser, and the liquid outlet of condenser is communicated with the inlet of economizer, and the leakage fluid dram of economizer is communicated with the inlet of main evaporator; The air inlet of described gas-liquid separator, gas outlet and leakage fluid dram are communicated with the outlet of main evaporator, the air entry of compressor, the inlet of auxiliary evaporator respectively; The high-pressure mouth of described injector, exhaust outlet and ejecting port are communicated with the exhaust outlet of economizer, the air entry of compressor, the outlet of auxiliary evaporator respectively.
Be connected with the first throttle valve between the inlet of described main evaporator and the leakage fluid dram of economizer; The liquid outlet of described condenser and the inlet of economizer directly are connected with second choke valve.
Described economizer selects for use flash tank economizer or plate to change economizer.
The present invention sets up gas-liquid separator in the outlet of main evaporator unevaporated liquid refrigerants is separated; And the pressure exhaust that produces by the uncooled gaseous state of economizer comes the separated liquid refrigerants of injection to carry out the refrigeration system of secondary assisted evaporative as the high voltage power of injector.The partially stabilized subcooled liquid that gets off of economizer directly gets into the main evaporator refrigeration; Pressure that the uncooled gaseous coolant of another part produces and the pressure differential between the auxiliary evaporator are as the high voltage power of injector, and the uncooled gaseous coolant of this another part gets into compressor continuation compression again simultaneously; The aperture of first throttle valve of the present invention is by the outlet refrigerant degree of superheat control of auxiliary evaporator.
First throttle valve before the main evaporator of the present invention only guarantees the outlet degree of superheat of auxiliary evaporator; Therefore the refrigerant of main evaporator outlet can be realized zero degree of superheat; Therefore do not exist refrigerant at the additional flow drag losses that superheat section produced, so the efficient of this refrigeration system is far above existing dry evaporator system; The effect of auxiliary cooling circulation is to guarantee that separated liquid refrigerants fully evaporates, and realizes the compressor oil return.
Advantage of the present invention:
(1), drive injector through economizer intermediate pressure shwoot steam and realize assisted evaporative, realize that main evaporator can export the refrigerant degree of superheat and still can normally move, therefore significantly improved refrigeration system efficient;
(2), system feasibility is high, do not have significant technical bottleneck, can large-scale popularization.
Description of drawings
Fig. 1 is a systematic schematic diagram of the present invention.
The specific embodiment
See Fig. 1, the refrigeration system of a kind of evaporator outlet zero degree of superheat operation comprises compressor 1, main evaporator 2, condenser 3, economizer 5, injector 6, gas-liquid separator 8, auxiliary evaporator 9, first throttle valve 7 and second choke valve 4; The gas outlet of compressor 1 is communicated with the air inlet of condenser 3, and the liquid outlet of condenser 3 is communicated with the inlet 5a of economizer 5 through second choke valve 4, and the leakage fluid dram 5b of economizer 5 is communicated with the inlet of main evaporator 2; The air inlet 8a of gas-liquid separator 8, gas outlet 8b and leakage fluid dram 8c are communicated with the outlet of main evaporator 2, the air entry of compressor 1, the inlet of auxiliary evaporator 9 respectively; The high-pressure mouth 6a of injector 6, exhaust outlet 6b and ejecting port 6c are communicated with, and are connected with first throttle valve 7 between the leakage fluid dram 5b of the inlet of main evaporator 2 and economizer 5 with the exhaust outlet 5c of economizer 5, the air entry of compressor 1, the outlet of auxiliary evaporator 9 respectively.
Use principle of the present invention:
The refrigerant that main evaporator 2 outlets are discharged separates liquid refrigerants through gas-liquid separator 8 with gaseous coolant; Gaseous coolant directly gets into compressor 1 processed compressed; Liquid refrigerants gets into auxiliary evaporator 9 evaporation process once more; The gaseous coolant that obtains of auxiliary evaporator 9 evaporation is introduced compressor 1 through injector 6 by the exhaust outlet 6b of injector and is compressed then; Gas after the compression gets into condenser 3 through condensation process; Condensed liquid gets into the cold matchmaker of mistake that a part settles out in the economizer 5 and directly advances main evaporator 2 refrigeration through first throttle valve 7 through the inlet 5a entering economizer 5 of second choke valve 4 by economizer 5, and pressure that the uncooled gaseous coolant of another part produces and the pressure differential between the auxiliary evaporator 9 are as the high voltage power of injector 6; The uncooled gaseous coolant of this another part gets into compressor 1 continuation compression again simultaneously, realizes kind of refrigeration cycle.
Can know by technique scheme; The present invention through the secondary assisted evaporative loop of gas-liquid separator and economizer intermediate pressure exhaust gas drive, realizes that main evaporator outlet refrigerant does not have the degree of superheat through comparatively simple mode; Therefore system effectiveness is higher; Near flooded evaporator and downward film evaporator,, practiced thrift mass energy through this technological innovation.
Claims (3)
1. the refrigeration system of evaporator outlet zero degree of superheat operation is characterized in that: comprise compressor, main evaporator, condenser, economizer, injector, gas-liquid separator and auxiliary evaporator; The gas outlet of described compressor is communicated with the air inlet of condenser, and the liquid outlet of condenser is communicated with the inlet of economizer, and the leakage fluid dram of economizer is communicated with the inlet of main evaporator; The air inlet of described gas-liquid separator, gas outlet and leakage fluid dram are communicated with the outlet of main evaporator, the air entry of compressor, the inlet of auxiliary evaporator respectively; The high-pressure mouth of described injector, exhaust outlet and ejecting port are communicated with the exhaust outlet of economizer, the air entry of compressor, the outlet of auxiliary evaporator respectively.
2. the refrigeration system of a kind of evaporator outlet according to claim 1 zero degree of superheat operation is characterized in that: be connected with the first throttle valve between the inlet of described main evaporator and the leakage fluid dram of economizer; The liquid outlet of described condenser and the inlet of economizer directly are connected with second choke valve.
3. the refrigeration system of a kind of evaporator outlet according to claim 1 zero degree of superheat operation, it is characterized in that: described economizer selects for use flash tank economizer or plate to change economizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110158386 CN102230681B (en) | 2011-06-14 | 2011-06-14 | Zero-superheat-degree running refrigerating system at evaporator outlet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110158386 CN102230681B (en) | 2011-06-14 | 2011-06-14 | Zero-superheat-degree running refrigerating system at evaporator outlet |
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| Publication Number | Publication Date |
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| CN102230681A CN102230681A (en) | 2011-11-02 |
| CN102230681B true CN102230681B (en) | 2012-12-26 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105444450A (en) * | 2014-07-04 | 2016-03-30 | 约克广州空调冷冻设备有限公司 | Refrigeration device |
| CN104394009B (en) * | 2014-10-29 | 2019-05-07 | 中国建设银行股份有限公司 | A kind of processing method and processing device of fault message |
| CN106705508A (en) * | 2015-08-07 | 2017-05-24 | 丹佛斯（天津）有限公司 | Flash tank and refrigerating system |
| CN105737459A (en) * | 2016-04-13 | 2016-07-06 | 广东美芝制冷设备有限公司 | Air conditioner |
| CN109269136A (en) * | 2018-08-07 | 2019-01-25 | 珠海格力电器股份有限公司 | Air-conditioning system |
| CN111829201B (en) | 2019-04-18 | 2021-11-02 | 青岛海尔空调电子有限公司 | Refrigeration system |
| CN113007913A (en) * | 2019-12-20 | 2021-06-22 | 青岛海尔空调电子有限公司 | Water chilling unit and control method thereof |
| CN114963634A (en) * | 2022-04-27 | 2022-08-30 | 西安华为数字能源技术有限公司 | Refrigerating system, control method and electric equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4639541B2 (en) * | 2001-03-01 | 2011-02-23 | 株式会社デンソー | Cycle using ejector |
| CN2486924Y (en) * | 2001-05-30 | 2002-04-17 | 武汉新世界制冷工业有限公司 | Large and medium ammonia refrigeration unit |
| JP2010038456A (en) * | 2008-08-05 | 2010-02-18 | Denso Corp | Vapor compression refrigeration cycle |
| JP5195364B2 (en) * | 2008-12-03 | 2013-05-08 | 株式会社デンソー | Ejector refrigeration cycle |
| CN201666688U (en) * | 2010-01-19 | 2010-12-08 | 珠海格力电器股份有限公司 | Double-temperature gas supplementing refrigerating system |
| CN201666686U (en) * | 2010-01-19 | 2010-12-08 | 珠海格力电器股份有限公司 | Throttling air supply system with ejectors |
| CN202133171U (en) * | 2011-06-14 | 2012-02-01 | 合肥天鹅制冷科技有限公司 | Refrigeration system capable of operating on zero superheat degree on an evaporator outlet |
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