CN108981223A - Injection supercooling refrigeration system - Google Patents
Injection supercooling refrigeration system Download PDFInfo
- Publication number
- CN108981223A CN108981223A CN201811080222.3A CN201811080222A CN108981223A CN 108981223 A CN108981223 A CN 108981223A CN 201811080222 A CN201811080222 A CN 201811080222A CN 108981223 A CN108981223 A CN 108981223A
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- China
- Prior art keywords
- outlet
- injector
- subcooler
- connect
- compressor
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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
- F25B19/00—Machines, plants or systems, using evaporation of a refrigerant but without recovery of the vapour
- F25B19/02—Machines, plants or systems, using evaporation of a refrigerant but without recovery of the vapour using fluid jet, e.g. of steam
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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
- F25B43/006—Accumulators
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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 discloses a kind of injections, and refrigeration system is subcooled.The main injection inflow entrance of its compressor outlet and injector of the invention connects, injector outlet is connect with condenser inlet, condensator outlet is connect with liquid storage device entrance, reservoir outlet is divided into two branches, one branch connects first throttle valve, subsequently into intermediate subcooler, outlet is connect with the second ejecting port of injector, another branch is directly over intermediate subcooler, outlet is connect by second throttle with evaporator inlet, and the outlet parameter is connect by motor with injector injection structure, evaporator outlet is connect with suction port of compressor.The present invention can be improved system effectiveness and energy utilization rate.
Description
Technical field
The present invention relates to refrigeration cycle and energy-saving field, more particularly to a kind of New Refrigerating with injection supercooling function
System.
Background technique
In vapor compression refrigeration system, refrigerant completes one through compressor, condenser, restricting element, evaporator, compressor
A circulation, as people are for environment and energy-efficient attention, the COP for improving refrigeration system also becomes an important content.Draw
Emitter is mainly made of components such as main jet, receiving chamber, mixing chamber and diffuser casings, is the turbulent diffusion using jet stream,
It is mutually mixed the two fluids of different pressures, and causes the fluid machinery and mix reaction equipment of energy exchange, many theories
Studies have shown that the basic recycle ratio routine Vapor Compression Refrigeration Cycle high-efficient 20% or more of injection.At present with the refrigeration of injector
After injector is usually placed in condenser by system, if patent 200710018738.0 is in U.S. C.A.Cemper patent US
Improved ejection circulation and the changeable refrigerating plant used of vapor-compression cycle, have and improve efficiency on the basis of 3277660
And automatic adjustment, the simple advantage of defrost, but component parts is more, and process is more complex.Injector is set there are also some refrigeration systems
Before condenser, to substitute compressor, if 201410256899.3 system of patent is free of compressor, and utilization waste heat driving,
Low-grade heat source is efficiently used, there is energy-saving effect, but application is limited.
Summary of the invention
The present invention solves the technical problem of provide a kind of simple refrigeration system with injection supercooling function, energy
Enough solve the problems, such as that system complex, energy utilization rate are low and application range is narrow.
In order to solve the above technical problems, refrigeration system is subcooled in a kind of injection of the present invention, comprising: compressor, injector, condensation
Device, liquid storage device, intermediate subcooler, first throttle valve, second throttle, evaporator and motor, the compressor outlet and injection
The main injection inflow entrance of device connects, and injector outlet is connect with condenser inlet, and condensator outlet is connect with liquid storage device entrance, storage
The outlet of liquid device is divided into two branches, and a branch is sequentially connected first throttle valve and intermediate subcooler, and intermediate subcooler first goes out
Mouth is connect with the second ejecting port of injector, and another branch is directly connected to intermediate subcooler, and intermediate subcooler second outlet passes through
Second throttle is connect with evaporator inlet, and intermediate subcooler second outlet is connected by motor and injector injection, evaporator
Outlet is connect with suction port of compressor.
The beneficial effects of the present invention are: injector nozzle distance of the present invention can be carried out according to intermediate subcooler outlet parameter
Automatic adjustment, system both can be used the pure refrigerant such as R22, R134a, R410a, Binary Refrigerant Mixtures also can be used and formed
Auto-cascading refrigeration system, and supercooling can be adjusted by first throttle valve, system is simpler, has a wide range of application, Neng Gouti
High refrigerant system efficiency and energy utilization rate.
Detailed description of the invention
Fig. 1 is schematic diagram of the three-dimensional structure；
Fig. 2 is conventional vapor compression refrigeration system structural schematic diagram.
The label of each component is as follows in figure: 1, compressor；2, injector；3, condenser；4, liquid storage device；5, intermediate supercooling
Device；6, first throttle valve；7, second throttle；8, evaporator；9, motor.
Specific embodiment
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
Referring to Fig. 1, the present invention includes: compressor 1, injector 2, condenser 3, liquid storage device 4, intermediate subcooler 5, first
Throttle valve 6, second throttle 7, evaporator 8 and motor 9, system structure is simpler, and a variety of refrigerants can be used and recycled, pressure
The refrigerant superheat steam that contracting machine 1 exports high temperature and pressure enters the main injection inflow entrance of injector 2, and refrigerant superheat steam is in
Between subcooler 5 export low pressure by flow type pump with injection fluid mixing after left injector 2, refrigerant enters 3 equipressure of condenser and is condensed into
Saturated liquid, saturated liquid enter liquid storage device 4 and are kept completely separate, and liquid storage device 4 exports saturated liquid and is divided into two branches, a branch
By 6 isenthalpic throttling of first throttle valve, pressure, temperature are reduced, the saturated liquid into intermediate subcooler 5, with another branch
Isobaric heat exchange is carried out, refrigerant temperature increases the second ejecting port for entering injector 2 after heat exchange, during another branch is directly over
Between subcooler 5, by heat exchange saturated liquid is subcooled, the saturated liquid of supercooling enters 7 isenthalpic throttling of second throttle, wherein mistake
It is cold to make the reduction of throttling process irreversible loss, energy utilization rate is improved, and the saturated liquid parameter being subcooled can pass through motor control
The nozzle distance of injector 2 processed.Two phase refrigerant fluid after being throttled by second throttle 7 enters evaporator 8 and carries out equipressure
It is evaporated to saturated vapor, saturated vapor enters compressor 1 and carries out the refrigerant superheat steam that isentropic Compression is high temperature high temperature, thus
Complete a cyclic process.
Fig. 2 is conventional vapor compression refrigeration system, and the refrigerant superheat steam that compressor 1 exports high temperature and pressure enters condensation
3 equipressure of device is condensed into saturated liquid, and saturated liquid enters second throttle 7 and carries out isenthalpic throttling, reduces pressure and temperature, saves
Two phase refrigerant fluid after stream, which enters evaporator 8, to carry out equipressure and is evaporated to saturated vapor, and saturated vapor enters 1 constant entropy of compressor
The refrigerant superheat steam of boil down to high temperature high temperature completes cyclic process.
The present invention can be improved system effectiveness and energy utilization rate compared with conventional vapor compression refrigeration system.Such as assume this
The system refrigerant of invention be R22, refrigerant mass fluxes 2q, -7 DEG C of evaporating temperature, 35 DEG C of condensation temperature, the pressure of injector
It is reduced to 50kpa, intermediate subcooler heat transfer temperature difference is 5 DEG C, then it is 402.38KJ/ that refprop software, which checks in evaporator outlet enthalpy,
Kg, evaporator inlet enthalpy are subcooled since throttle valve is isenthalpic throttling so identical as intermediate subcooler outlet enthalpy by centre
Evaporator inlet enthalpy is 71.88KJ/Kg known to the thermal balance and heat transfer temperature difference of device, and the enthalpy of compressor outlet is by injector pressure
The entropy of drop and evaporator outlet can be identified as 434.19KJ/Kg, so system effectiveness of the inventionSimilarly, if Fig. 2 system uses identical operating condition refrigerant for R22, refrigerant matter
Amount flow is 2q, and -7 DEG C of evaporating temperature, 35 DEG C of condensation temperature, then evaporator outlet enthalpy is 402.38KJ/Kg, evaporator inlet
Enthalpy is 243.07KJ/Kg, and the enthalpy of compressor outlet is 433.23KJ/Kg, so system effectivenessComparison is it is found that system effectiveness of the invention is much higher than conventional vapor compression refrigeration
System is as many as its 4.8 times.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (2)
1. refrigeration system is subcooled in a kind of injection characterized by comprising compressor, injector, condenser, liquid storage device, intermediate mistake
The main injection inflow entrance of cooler, first throttle valve, second throttle, evaporator and motor, the compressor outlet and injector
Connection, injector outlet are connect with condenser inlet, and condensator outlet is connect with liquid storage device entrance, and reservoir outlet is divided into two
Branch, a branch are sequentially connected first throttle valve and intermediate subcooler, and the second of intermediate subcooler first outlet and injector
Ejecting port connection, another branch are directly connected to intermediate subcooler, and intermediate subcooler second outlet passes through second throttle and evaporation
The connection of device entrance, intermediate subcooler second outlet are connected by motor and injector injection, evaporator outlet and suction port of compressor
Connection.
2. refrigeration system is subcooled in a kind of injection according to claim 1, it is characterised in that: the system using R22, R134a,
The pure refrigerant of R410a forms auto-cascading refrigeration system using Binary Refrigerant Mixtures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811080222.3A CN108981223A (en) | 2018-09-17 | 2018-09-17 | Injection supercooling refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811080222.3A CN108981223A (en) | 2018-09-17 | 2018-09-17 | Injection supercooling refrigeration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108981223A true CN108981223A (en) | 2018-12-11 |
Family
ID=64546281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811080222.3A Pending CN108981223A (en) | 2018-09-17 | 2018-09-17 | Injection supercooling refrigeration system |
Country Status (1)
| Country | Link |
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| CN (1) | CN108981223A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109724283A (en) * | 2019-02-02 | 2019-05-07 | 天津商业大学 | A kind of carbon dioxide refrigerating system with injector |
| WO2020211184A1 (en) * | 2019-04-18 | 2020-10-22 | 青岛海尔空调电子有限公司 | Refrigeration system |
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| CN1963341A (en) * | 2006-11-21 | 2007-05-16 | 西安交通大学 | Self-overlapping refrigerating cycle system with injector |
| CN201269664Y (en) * | 2008-08-27 | 2009-07-08 | 太原中绿节能技术有限公司 | Nozzle-adjustable ejection apparatus |
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| CN104121719A (en) * | 2013-04-25 | 2014-10-29 | 珠海格力电器股份有限公司 | Heat pump or refrigerating system |
| CN204460837U (en) * | 2014-12-16 | 2015-07-08 | 山东大学 | A kind of both vapor compression-injection coupling refrigeration system of improvement |
| CN104913542A (en) * | 2015-05-29 | 2015-09-16 | 浙江工业大学 | Injection-compression refrigerating system driven by adopting low-grade heat energy of gas-liquid separator |
| CN104930741A (en) * | 2015-05-29 | 2015-09-23 | 浙江工业大学 | Novel compression auxiliary jetting refrigerating system with supercooler |
| CN104949372A (en) * | 2015-05-29 | 2015-09-30 | 浙江工业大学 | Novel compression-assisted ejector refrigeration system with gas-liquid separator |
| CN105363588A (en) * | 2014-09-01 | 2016-03-02 | 彭光前 | Novel adjustable ejector |
| CN107255087A (en) * | 2017-06-28 | 2017-10-17 | 西安交通大学 | A kind of moveable injector device of main jet |
| CN208871903U (en) * | 2018-09-17 | 2019-05-17 | 天津商业大学 | Injection supercooling refrigeration system |
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2018
- 2018-09-17 CN CN201811080222.3A patent/CN108981223A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1963341A (en) * | 2006-11-21 | 2007-05-16 | 西安交通大学 | Self-overlapping refrigerating cycle system with injector |
| CN201269664Y (en) * | 2008-08-27 | 2009-07-08 | 太原中绿节能技术有限公司 | Nozzle-adjustable ejection apparatus |
| CN101963411A (en) * | 2009-07-25 | 2011-02-02 | 王海 | Steam compression and jet type air conditioner |
| CN101829639A (en) * | 2010-05-28 | 2010-09-15 | 杜战奇 | Injector with adjustable distance between nozzle and mixing chamber inlet and adjustable nozzle critical sectional area |
| CN102042721A (en) * | 2010-12-10 | 2011-05-04 | 西安交通大学 | Synergy type steam compression heat pump circulating system of ejector |
| CN103148649A (en) * | 2013-03-27 | 2013-06-12 | 上海理工大学 | Ejector design method for vapor compression refrigeration circulating system |
| CN104121719A (en) * | 2013-04-25 | 2014-10-29 | 珠海格力电器股份有限公司 | Heat pump or refrigerating system |
| CN105363588A (en) * | 2014-09-01 | 2016-03-02 | 彭光前 | Novel adjustable ejector |
| CN204460837U (en) * | 2014-12-16 | 2015-07-08 | 山东大学 | A kind of both vapor compression-injection coupling refrigeration system of improvement |
| CN104913542A (en) * | 2015-05-29 | 2015-09-16 | 浙江工业大学 | Injection-compression refrigerating system driven by adopting low-grade heat energy of gas-liquid separator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109724283A (en) * | 2019-02-02 | 2019-05-07 | 天津商业大学 | A kind of carbon dioxide refrigerating system with injector |
| CN109724283B (en) * | 2019-02-02 | 2024-05-28 | 天津商业大学 | Carbon dioxide refrigerating system with ejector |
| WO2020211184A1 (en) * | 2019-04-18 | 2020-10-22 | 青岛海尔空调电子有限公司 | Refrigeration system |
| US11578896B2 (en) | 2019-04-18 | 2023-02-14 | Qingdao Haier Air-Conditioning Electronic Co., Ltd | Refrigeration system |
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Application publication date: 20181211 |
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