CN100342186C - Compression/injection mixed circulation refrigerating machine set - Google Patents
Compression/injection mixed circulation refrigerating machine set Download PDFInfo
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- CN100342186C CN100342186C CNB2005100284644A CN200510028464A CN100342186C CN 100342186 C CN100342186 C CN 100342186C CN B2005100284644 A CNB2005100284644 A CN B2005100284644A CN 200510028464 A CN200510028464 A CN 200510028464A CN 100342186 C CN100342186 C CN 100342186C
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Abstract
The present invention relates to a compression/ejection mixed circulation refrigerating machine set which comprises a compressor, an oil separator, a condenser, a high-pressure reservoir, a filtering dryer, a viewing mirror, an electromagnetic valve, a two-stage ejector, a low-pressure reservoir, a thermostatic expansion valve and an evaporator, wherein the two-stage ejector has three joints, a main flow inlet, an ejecting flow inlet and an ejector outlet; an outlet of the evaporator is connected with the ejecting flow inlet; an outlet of the electromagnetic valve is connected with the main flow inlet; an outlet of the ejector is connected with an inlet of the low-pressure reservoir. The present invention uses the two-stage ejector to eject low-pressure gaseous refrigerant coming from the evaporator by utilizing the energy of the main flow coming from the condenser, causes the low-pressure gaseous refrigerant to boost and improve the air absorbing pressure of the inlet of the compressor so as to improve the efficiency of the refrigerating device.
Description
Technical field
What the present invention relates to is a kind of refrigeration unit of refrigeration technology field, specifically, is a kind of compression/injection mixing circulation refrigeration unit.
Background technology
Refrigeration unit is made up of compressor, condenser, choke valve, evaporimeter mostly at present, add some annexes at most, such as parts such as oil eliminator, gas-liquid separators, cold-producing medium is condensed into liquid state after being come out by compressor in condenser, enter evaporimeter through choke valve again, because pipeline has the pressure loss, evaporating pressure in the compressor air suction pressure ratio evaporimeter is low slightly, compressor is worked between evaporating pressure and condensing pressure, pressure ratio is very high, refrigerating efficiency is lower, concerning the energy situation of present growing tension, is very disadvantageous.
Because the favourable energy with working media of ejector can be realized the compression to the injection medium, occurred utilizing injector to improve the refrigeration machine of compressor air suction pressure at present, this refrigeration machine can significantly improve the refrigerating efficiency of compressor, its composition is generally and is condensed into liquid state after cold-producing medium is come out by compressor in condenser, enter injector through choke valve again, enter low-pressure oil storage again, the gaseous refrigerant on low-pressure oil storage top enters compressor, the liquid refrigerant of low-pressure oil storage bottom enters evaporimeter and evaporates, and injected device injection goes out injector again and enters low-pressure oil storage in the injector with after the main flow refrigerant mixed.
Find that by prior art documents the Chinese patent publication number is CN1443999A, denomination of invention: vapour compression refrigerator and heat exchanger thereof, a kind of compression/ejector refrigeration machine that comes to this.This patent comprises: be used to suck the compressor with compression refrigeration, be used to cool off the radiator of the cold-producing medium of discharging from compressor, be used for the sweat cooling machine to absorb the evaporimeter of heat, described evaporimeter is made of heat exchanger; Nozzle, injector, gas-liquid separator." this refrigeration machine compares with traditional refrigeration machine; can significantly improve refrigerating efficiency; however its weak point: for the refrigeration machine of the lower cryogenic applications of evaporating temperature (such as freezing usefulness); because the compression ratio of the cold-producing medium that comes out from evaporimeter is bigger, thereby influenced the raising of refrigerating plant efficient.
Summary of the invention
Defective and the deficiency of the present invention in order to overcome prior art provides a kind of compression/injection mixing circulation refrigeration unit, makes it adopt two-stage ejector, can improve the refrigerating efficiency of refrigeration machine when evaporating temperature is low.
The present invention is achieved by the following technical solutions, the present invention includes: compressor, oil eliminator, condenser, high pressure reservoir, Filter dryer, visor, magnetic valve, two-stage ejector, low-pressure oil storage, heating power expansion valve, evaporimeter are formed, and two-stage ejector has three joints: main flow import, flow type pump with injection import, injector outlet.The outlet of compressor links to each other with the import of oil eliminator, the oil eliminator outlet links to each other with condenser inlet, the oil export of oil eliminator links to each other with the compressor inlet pipeline, the outlet of condenser links to each other with the import of high pressure reservoir, the outlet of high pressure reservoir links to each other with the Filter dryer import, the outlet of Filter dryer links to each other with the visor import, the outlet of visor links to each other with the magnetic valve import, electromagnetic valve outlet links to each other with the main flow import of two-stage ejector, the two-stage ejector outlet links to each other with the import of low-pressure oil storage, the outlet at low-pressure oil storage top links to each other with compressor inlet, the outlet of low-pressure oil storage bottom links to each other with the import of heating power expansion valve, the outlet of heating power expansion valve links to each other with the import of evaporimeter, and the temperature-sensitive of heating power expansion valve is packaged on the evaporator outlet pipeline, and evaporator outlet links to each other with the flow type pump with injection import of two-stage ejector.
When the unit kind of refrigeration cycle is moved, cold-producing medium by compressor compresses after, enter condenser through oil eliminator, again through entering two-stage ejector behind high pressure reservoir, device for drying and filtering, visor, the magnetic valve, arrive low-pressure oil storage again, the cold-producing medium that enters low-pressure oil storage carries out gas-liquid separation, and liquid refrigerant enters in the evaporimeter through heating power expansion valve from the low-pressure oil storage bottom again and evaporates, and the ejecting port by two-stage ejector enters two-stage ejector and main flow refrigerant mixed again; The gaseous refrigerant at low-pressure oil storage top is got back to compressor.
The present invention can be used for various refrigerating plants, air-conditioning, refrigerator car unit etc., and existing various cold-producing mediums commonly used all can use.Because two-stage ejector can utilize the energy of main flow cold-producing medium to make by the low pressure refrigerant in the injection evaporimeter and boost, even under very low evaporating temperature, also can improve the pressure of inspiration(Pi) of compressor inlet, thereby the efficient of compressor is improved, realize energy-conservation.
Compared with prior art, two-stage ejector has been adopted in not being both of maximum of the present invention, can be applicable to the cryogenic freezing application so that the evaporating pressure in the evaporimeter is lower, also makes the pressure of inspiration(Pi) of compressor further improve, and improves unit efficiency.The invention has the beneficial effects as follows: can improve the pressure of compressor suction, the economy of refrigeration system is significantly improved, energy savings consumption, it is about 10% to be than patent publication No. that the efficient of CN1443999A refrigeration system improves, and device is simple, reliable.
Description of drawings
Fig. 1 structural representation of the present invention
Fig. 2 two-stage ejector structure of the present invention cutaway view
The specific embodiment
As shown in Figure 1, the present invention includes: compressor 1, oil eliminator 2, condenser 3, high pressure reservoir 4, Filter dryer 5, visor 6, magnetic valve 7, two-stage ejector 8, evaporimeter 9, heating power expansion valve 10, low-pressure oil storage 11, two-stage ejector 8 have three joints: main flow import 12, flow type pump with injection import 13, injector outlet 14.The outlet of compressor 1 links to each other with the import of oil eliminator 2, oil eliminator 2 outlets link to each other with condenser 3 imports, the oil export of oil eliminator 2 links to each other with compressor 1 inlet pipeline, the outlet of condenser 3 links to each other with the import of high pressure reservoir 4, the outlet of high pressure reservoir 4 links to each other with Filter dryer 5 imports, the outlet of Filter dryer 5 links to each other with visor 6 imports, the outlet of visor 6 links to each other with magnetic valve 7 imports, magnetic valve 7 outlets link to each other with the main flow import 12 of two-stage ejector 8, the injector of two-stage ejector 8 outlet 14 links to each other with the import of low-pressure oil storage 11, the outlet at low-pressure oil storage 11 tops links to each other with compressor 1 import, the outlet of low-pressure oil storage 11 bottoms links to each other with the import of heating power expansion valve 10, the outlet of heating power expansion valve 10 links to each other with the import of evaporimeter 9, the temperature-sensitive of heating power expansion valve 10 is packaged on evaporimeter 9 outlet conduits, and evaporimeter 9 outlets link to each other with the flow type pump with injection import 13 of two-stage ejector 8.
As shown in Figure 2, two-stage ejector 8 is to be composed in series by two injectors, because injection pressure and back pressure is different, two injectors should design separately according to work operating mode separately, the back pressure of first order injector is exactly the injection pressure of second level injector, be called intermediate pressure, during design two-stage ejector 8, intermediate pressure should equate with the ratio of intermediate pressure (second level compression ratio) with the back pressure of two-stage ejector 8 with the ratio (first order compression ratio) of injection pressure, two-stage ejector 8 externally connects identical with the single-stage injector, is provided with main flow import 12, flow type pump with injection import 13, injector outlet 14.
The internal structure of two-stage ejector 8 comprises: first order jet nozzle 15, one-level injecting chamber 16, one-level mixing chamber 17, one-level diffusion chamber 18, secondary nozzle 19, secondary injecting chamber 20, secondary mixing chamber 21, secondary diffusion chamber 22.First order jet nozzle 15 all links to each other with main flow import 12 with secondary nozzle 19, place one-level injecting chamber 16 and secondary injecting chamber 20 respectively, be reducing and expansion type nozzle, work operating mode design according to their correspondences, one-level injecting chamber 16 links to each other with flow type pump with injection import 13, the back of one-level injecting chamber 16 is an one-level mixing chamber 17, the back of one-level mixing chamber 17 is one-level diffusion chamber 18, one-level diffusion chamber 18 links to each other with secondary injecting chamber 20, the back of secondary injecting chamber 20 is a secondary mixing chamber 21, the back of secondary mixing chamber 21 is secondary diffusion chamber 22, and secondary diffusion chamber 22 links to each other with injector outlet 14.
Claims (6)
1. compression/injection mixing circulation refrigeration unit, comprise: compressor (1), oil eliminator (2), condenser (3), high pressure reservoir (4), Filter dryer (5), visor (6), magnetic valve (7), evaporimeter (9), heating power expansion valve (10), low-pressure oil storage (11), it is characterized in that, also comprise: two-stage ejector (8), two-stage ejector (8) has three joints: main flow import (12), flow type pump with injection import (13), injector outlet (14), the outlet of compressor (1) links to each other with the import of oil eliminator (2), oil eliminator (2) outlet links to each other with condenser (3) import, the oil export of oil eliminator (2) links to each other with compressor (1) inlet pipeline, the outlet of condenser (3) links to each other with the import of high pressure reservoir (4), the outlet of high pressure reservoir (4) links to each other with Filter dryer (5) import, the outlet of Filter dryer (5) links to each other with visor (6) import, the outlet of visor (6) links to each other with magnetic valve (7) import, magnetic valve (7) outlet links to each other with the main flow import (12) of two-stage ejector (8), the injector outlet (14) of two-stage ejector (8) links to each other with the import of low-pressure oil storage (11), the outlet at low-pressure oil storage (11) top links to each other with compressor (1) import, the outlet of low-pressure oil storage (11) bottom links to each other with the import of heating power expansion valve (10), the outlet of heating power expansion valve (10) links to each other with the import of evaporimeter (9), the temperature-sensitive of heating power expansion valve (10) is packaged on evaporimeter (9) outlet conduit, and evaporimeter (9) outlet links to each other with the flow type pump with injection import (13) of two-stage ejector (8).
2. compression according to claim 1/injection mixing circulation refrigeration unit, it is characterized in that, two-stage ejector (8) is to be composed in series by two injectors, the back pressure of first order injector is exactly the injection pressure of second level injector, be called intermediate pressure, intermediate pressure equates with the ratio of intermediate pressure with the back pressure of two-stage ejector (8) with the ratio of the injection pressure of first order injector.
3. compression according to claim 2/injection mixing circulation refrigeration unit, it is characterized in that, two-stage ejector (8) internal structure comprises: first order jet nozzle (15), one-level injecting chamber (16), one-level mixing chamber (17), one-level diffusion chamber (18), secondary nozzle (19), secondary injecting chamber (20), secondary mixing chamber (21), secondary diffusion chamber (22), first order jet nozzle (15) all links to each other with main flow import (12) with secondary nozzle (19), place one-level injecting chamber (16) and secondary injecting chamber (20) respectively, one-level injecting chamber (16) links to each other with flow type pump with injection import (13), the back of one-level injecting chamber (16) is one-level mixing chamber (17), the back of one-level mixing chamber (17) is one-level diffusion chamber (18), one-level diffusion chamber (18) links to each other with secondary injecting chamber (20), the back of secondary injecting chamber (20) is secondary mixing chamber (21), the back of secondary mixing chamber (21) is secondary diffusion chamber (22), and secondary diffusion chamber (22) links to each other with injector outlet (14).
4. compression according to claim 3/injection mixing circulation refrigeration unit is characterized in that, first order jet nozzle (15) and secondary nozzle (19) are reducing and expansion type nozzle.
5. according to claim 1 or 2 described compressions/injection mixing circulation refrigeration unit, it is characterized in that two-stage ejector (8) externally connects identical with the single-stage injector, be provided with main flow import (12), flow type pump with injection import (13), injector outlet (14).
6. compression according to claim 1/injection mixing circulation refrigeration unit is characterized in that, low-pressure oil storage (11) is established an import and two outlets, and import is located at low-pressure oil storage (11) middle part on the upper side, and top and bottom are located in two outlets respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100284644A CN100342186C (en) | 2005-08-04 | 2005-08-04 | Compression/injection mixed circulation refrigerating machine set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100284644A CN100342186C (en) | 2005-08-04 | 2005-08-04 | Compression/injection mixed circulation refrigerating machine set |
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| Publication Number | Publication Date |
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| CN1719157A CN1719157A (en) | 2006-01-11 |
| CN100342186C true CN100342186C (en) | 2007-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100284644A Expired - Fee Related CN100342186C (en) | 2005-08-04 | 2005-08-04 | Compression/injection mixed circulation refrigerating machine set |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832680A (en) * | 2010-04-27 | 2010-09-15 | 大连理工大学 | Two-stage steam jet refrigeration system |
| CN111373213A (en) * | 2017-09-25 | 2020-07-03 | 江森自控科技公司 | Two-stage oil power injector system |
Families Citing this family (11)
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|---|---|---|---|---|
| CN100398940C (en) * | 2006-02-25 | 2008-07-02 | 大连理工大学 | Air-wave refrigerator with single pipe and refrigerating method thereof |
| CN100434834C (en) * | 2006-03-09 | 2008-11-19 | 西安交通大学 | Steam jetting refrigerating circulation system |
| CN102187164B (en) * | 2008-08-14 | 2015-07-08 | 梅-鲁本技术公司 | Binary fluid ejector and method of use |
| CN101865120B (en) * | 2010-06-03 | 2012-06-20 | 广州市盈夏制冷技术有限公司 | Air compressor set capable of freezing and drying air inflow |
| CN102853578B (en) * | 2012-04-19 | 2014-06-25 | 浙江大学 | Mixed working medium two-stage jet type refrigerating machine |
| CN108131278A (en) * | 2018-01-10 | 2018-06-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor assembly, refrigeration system component and refrigerator |
| CN110803288A (en) * | 2019-10-25 | 2020-02-18 | 中航通飞研究院有限公司 | Heating, injecting and mixing device for cabin |
| CN111043795B (en) * | 2019-12-27 | 2021-08-20 | 广东美的白色家电技术创新中心有限公司 | Compressor assembly and refrigeration equipment |
| CN112664326B (en) * | 2020-12-11 | 2022-09-06 | 中国航空工业集团公司金城南京机电液压工程研究中心 | High-low pressure bleed air system |
| CN114279102B (en) * | 2021-12-14 | 2023-12-29 | 南京恒标斯瑞冷冻机械制造有限公司 | Falling film type evaporation cold refrigerating system and working method |
| CN117174676B (en) * | 2023-09-11 | 2024-02-02 | 山东大学 | Heat dissipation device and method for ejector pumpless circulating chip driven by TEC heat energy |
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| JP2001221517A (en) * | 2000-02-10 | 2001-08-17 | Sharp Corp | Supercritical refrigeration cycle |
| CN1470821A (en) * | 2002-07-09 | 2004-01-28 | ��ʽ�����װ | Injector with throttle controllable nozzle and injection circulation using same |
| US6729157B2 (en) * | 2002-01-15 | 2004-05-04 | Denso Corporation | Air conditioner with ejector cycle system |
| CN1532471A (en) * | 2000-06-01 | 2004-09-29 | ��ʽ�����װ | Jet circulation system |
| CN1573258A (en) * | 2003-06-18 | 2005-02-02 | 株式会社电装 | Ejector cycle |
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2005
- 2005-08-04 CN CNB2005100284644A patent/CN100342186C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001221517A (en) * | 2000-02-10 | 2001-08-17 | Sharp Corp | Supercritical refrigeration cycle |
| CN1532471A (en) * | 2000-06-01 | 2004-09-29 | ��ʽ�����װ | Jet circulation system |
| US6729157B2 (en) * | 2002-01-15 | 2004-05-04 | Denso Corporation | Air conditioner with ejector cycle system |
| CN1470821A (en) * | 2002-07-09 | 2004-01-28 | ��ʽ�����װ | Injector with throttle controllable nozzle and injection circulation using same |
| CN1573258A (en) * | 2003-06-18 | 2005-02-02 | 株式会社电装 | Ejector cycle |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832680A (en) * | 2010-04-27 | 2010-09-15 | 大连理工大学 | Two-stage steam jet refrigeration system |
| CN111373213A (en) * | 2017-09-25 | 2020-07-03 | 江森自控科技公司 | Two-stage oil power injector system |
| CN111373213B (en) * | 2017-09-25 | 2022-04-05 | 江森自控科技公司 | Two-stage oil power injector system |
| US11435116B2 (en) | 2017-09-25 | 2022-09-06 | Johnson Controls Tyco IP Holdings LLP | Two step oil motive eductor system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1719157A (en) | 2006-01-11 |
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Granted publication date: 20071010 Termination date: 20120804 |