CN206426805U - A kind of carbon dioxide automobile air conditioner system of both vapor compression auxiliary supercooling - Google Patents
A kind of carbon dioxide automobile air conditioner system of both vapor compression auxiliary supercooling Download PDFInfo
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- CN206426805U CN206426805U CN201720090148.8U CN201720090148U CN206426805U CN 206426805 U CN206426805 U CN 206426805U CN 201720090148 U CN201720090148 U CN 201720090148U CN 206426805 U CN206426805 U CN 206426805U
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- vapor compression
- refrigerant
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- compressor
- compression auxiliary
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Abstract
The utility model discloses a kind of CO of both vapor compression auxiliary supercooling2Automotive air-conditioning system.The utility model includes mixed non-azeotropic refrigerant both vapor compression auxiliary cooling system and CO2Transcritical cooling system；Mixed non-azeotropic refrigerant both vapor compression auxiliary cooling system is made up of accessory system compressor, subcooler, choke valve and the condenser being sequentially connected；CO2Refrigeration system is made up of the main recycle compressor being sequentially connected, gas cooler, subcooler, choke valve and evaporator.The refrigerant that the utility model is exported using auxiliary circulation to gas cooler is subcooled, the CO that can be exported gas cooler by the auxiliary circulation of low capacity2Cooling, it is easy to accomplish, and its temperature can be down to below environment temperature, high pressure CO can be substantially reduced2Irreversible loss in throttling process.
Description
Technical field
The utility model is related to environmental protection refrigerant technology, field of Refrigeration and Air-conditioning, more particularly to a kind of non-azeotrope hybrid refrigeration
The CO of agent both vapor compression auxiliary supercooling2Trans-critical cycle kind of refrigeration cycle automobile air conditioning refrigerating system.
Background technology
With the continuous improvement developed rapidly with living standards of the people of China's economy, China's automobile quantity increasingly increases.
Present automobile air conditioning refrigerating system is neatly to compress based on kind of refrigeration cycle, generally using vapor-compression chiller, by making
Cold compressor, condenser, choke valve and evaporator composition.
Under current environmental protection and energy-conservation dual-pressure, development green refrigerant is trend of the times.Nowadays energy and environment
Problem turns into limitation China's economy and the key factor of social development.With increasing for automobile quantity, vehicle exhaust is made to environment
Into very havoc, the problem of it causes greenhouse effects and damaged the ozone layer, cause the common concern of people, it is empty as restricting vehicle
Readjust the distribution the restraining factors of exhibition.
For the most air conditioning for automobiles applied in the market, the refrigerant of filling is mostly R134a, and its whole world is warm
Change potentiality（GWP）Up to 1300, its lipophile is poor, incompatible with existing use refrigeration lubrication oil, also has corrosiveness to copper pipe；Vapour
The vibrations of car in the process of moving inevitably cause the leakage of refrigerant in refrigeration system, exacerbate greenhouse effects.2014
April in year, European Union was proposed use of the tightened up F-gas regulation limits high GWP refrigerant in refrigeration air-conditioner, reduced greenhouse
Gas discharge, slowing global warming have turned into the matter of utmost importance that global environmental protection work at this stage faces, and world community also adds
Speed promotes the process of the high GWP of environmentally friendly refrigerant replacement HFC class refrigerants.Wherein, CO2Because its environment-friendly characteristic is by again
The secondary common concern for receiving people.Professor Lorentzen of Norwegian University of Science ＆ Technology thinks CO2It is most potential natural work
Matter.CO2Have many advantages, such as：1）It is environment-friendly, ODP=0, GWP=1；2）Safety non-toxic is non-combustible, and chemical property is stable；3）
It is cheap easily to obtain；4）With the compatibility of lubricating oil；5）Viscosity is low, thermal conductivity factor is high, with good hot physical property and flowing and
Heat-transfer character；6）Unit volume cooling/heating amount is higher, compared with common working medium, CO2Equipment volume more compact.However,
Due to CO2Critical-temperature be only 31.1 DEG C, and critical pressure is up to 7.38MPa, and its operating pressure is big compared with high, restriction loss,
Cause CO2Trans critical cycle efficiency is less than conventional refrigerant systems, and this is the main reason for limiting its popularization and application.
Therefore, the energy consumption of air conditioning for automobiles, the latent value of filling zero ozone depletion are reduced in the urgent need to new technology（ODP）, it is low
GWP refrigerant ensures the environment-friendly of refrigeration system.
Utility model content
The utility model purpose is to provide a kind of CO of mixed non-azeotropic refrigerant both vapor compression auxiliary supercooling2Trans-critical cycle
Kind of refrigeration cycle automobile air conditioning refrigerating system, is realized cold to gas by mixed non-azeotropic refrigerant both vapor compression auxiliary cooling system
But the refrigerant of device outlet is subcooled, and improves the performance of refrigeration system and the efficiency of vehicle；Use natural refrigerant CO2, it is ensured that
Refrigeration system it is environment-friendly.
In order to solve problem above, technical solution adopted in the utility model is：Propose that a kind of both vapor compression was aided in
Cold CO2Automotive air-conditioning system, including mixed non-azeotropic refrigerant both vapor compression auxiliary cooling system and CO2Trans-critical cycle refrigeration system
System；Mixed non-azeotropic refrigerant both vapor compression auxiliary cooling system is by the accessory system compressor, subcooler, throttling that are sequentially connected
Valve and condenser composition； CO2Refrigeration system is by the main recycle compressor being sequentially connected, gas cooler, subcooler, choke valve
With evaporator composition.
CO2The working medium of filling is CO in refrigeration system2, the CO of low-temp low-pressure2Steam enters compressor air suction mouthful, by compressing
Machine is compressed to HTHP supercritical fluid, into gas cooler heat release, a little higher than environment temperature of refrigerant temperature now.
Enter CO afterwards2Cooling evaporator and the refrigerant of auxiliary circulation are exchanged heat, and it is low to be changed into low temperature after choke valve expansion throttling
The gas-liquid two-phase fluid of pressure, the heat in compartment is absorbed into evaporator, then into compressor, completes kind of refrigeration cycle.CO2From
Flowed out in gas cooler, outlet temperature is higher, can be by increasing evaporation process that auxiliary cooling circulates by CO in major cycle2's
Subcooling process liberated heat is transferred to cooling water or atmospheric environment, realizes CO2Supercooling, and then reduce restriction loss.
The utility model has the advantages and positive effects of：
（1）The refrigerant of refrigeration system is natural refrigerant CO2。CO2GWP for 1, ODP be 0, safety non-toxic is non-combustible, honest and clean
Valency is easily obtained, and is environment-friendly refrigerant, compared with the refrigerant that existing air conditioning for automobiles is used, and greenhouse effect is alleviated significantly
Should, environment-friendly advantage is obvious.
（2）CO2Relative to the refrigerant used now, the cooling condition of lower temperature is more suitable for, with higher list
The charging amount of position volume refrigerating capacity compressor, the volume of compressor and refrigerant reduces, and reduces the weight and vehicle of refrigeration system
Car weight, so as to reduce the oil consumption of refrigerator car.
（3）The refrigerant exported using auxiliary circulation to gas cooler is subcooled, and passes through the auxiliary circulation of low capacity
The CO that gas cooler can be exported2Cooling, it is easy to accomplish, and its temperature can be down to below environment temperature, can be significantly
Reduce high pressure CO2Irreversible loss in throttling process.
（4）Non-azeotropic mixed working medium is used in auxiliary circulation, it has temperature glide in the phase transition process of heat exchanger,
Saturation temperature gradually rises with the progress of evaporation process, with CO2Temperature change form good Temperature Matching, reduce cooling
Irreversible loss during evaporator heat exchange, improves the overall thermodynamics consummating degree of circulation, improves circular flow performance.
Each constituent element of non-azeotropic mixed working medium selects low GWP refrigerants, environment-friendly.
Brief description of the drawings
Fig. 1 is system schematic of the present utility model；
In figure：1st, compressor；2nd, gas cooler；3rd, auxiliary circulation compressor；4th, auxiliary circulation condenser；5th, auxiliary is followed
Ring choke valve, 6, CO2Cooling evaporator；7th, choke valve；8th, evaporator.
Embodiment
For invention, features and effects of the present utility model can be further appreciated that, following examples are hereby enumerated, and coordinate
Accompanying drawing describes in detail as follows：
Referring to Fig. 1, the utility model core is mixed non-azeotropic refrigerant both vapor compression auxiliary cooling system.You are for this
Want new including mixed non-azeotropic refrigerant both vapor compression auxiliary cooling system and CO2Transcritical cooling system；Non-azeotrope is mixed
Refrigerant vapor compression auxiliary cooling system is by the accessory system compressor being sequentially connected, subcooler, choke valve and condenser group
Into； CO2Refrigeration system is made up of the main recycle compressor being sequentially connected, gas cooler, subcooler, choke valve and evaporator.
The CO of the mixed non-azeotropic refrigerant both vapor compression auxiliary supercooling of the present embodiment2Trans-critical cycle kind of refrigeration cycle air conditioning for automobiles
The operation principle of refrigeration system is：
The first step：The CO of low-temp low-pressure2Steam enters the air entry of compressor 1, is faced by compressor compresses to HTHP is super
Boundary's fluid, into the heat release of gas cooler 2, because there is heat transfer temperature difference in air cooler, a little higher than environment of refrigerant temperature now
Temperature.
Second step： CO2Fluid enters CO2Mixed non-azeotropic refrigerant in cooling evaporator 6, auxiliary circulation enters compression
Machine 3, carries out condensation throttling in condenser 4 and choke valve 5.
3rd step：Cryogenic high pressure supercritical fluid CO 2 is the gas-liquid two-phase of low-temp low-pressure after the expansion throttling of choke valve 7
Fluid state, the heat in environment is absorbed into evaporator 8, then into compressor 1, completes kind of refrigeration cycle.
Claims (1)
1. a kind of CO of both vapor compression auxiliary supercooling2Automotive air-conditioning system, it is characterized in that, including mixed non-azeotropic refrigerant steam
Compress auxiliary cooling system and CO2Transcritical cooling system；Mixed non-azeotropic refrigerant both vapor compression auxiliary cooling system by according to
Accessory system compressor, subcooler, choke valve and the condenser composition of secondary connection； CO2Refrigeration system is followed by the master being sequentially connected
Ring compressor, gas cooler, subcooler, choke valve and evaporator composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720090148.8U CN206426805U (en) | 2017-01-24 | 2017-01-24 | A kind of carbon dioxide automobile air conditioner system of both vapor compression auxiliary supercooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720090148.8U CN206426805U (en) | 2017-01-24 | 2017-01-24 | A kind of carbon dioxide automobile air conditioner system of both vapor compression auxiliary supercooling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206426805U true CN206426805U (en) | 2017-08-22 |
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ID=59590522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720090148.8U Expired - Fee Related CN206426805U (en) | 2017-01-24 | 2017-01-24 | A kind of carbon dioxide automobile air conditioner system of both vapor compression auxiliary supercooling |
Country Status (1)
| Country | Link |
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| CN (1) | CN206426805U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106828032A (en) * | 2017-01-24 | 2017-06-13 | 天津商业大学 | A kind of carbon dioxide automobile air conditioner system of both vapor compression auxiliary supercooling |
| CN109551996A (en) * | 2018-12-05 | 2019-04-02 | 上海交通大学 | Assist the carbon dioxide automobile heat pump air-conditioning system of supercooling |
-
2017
- 2017-01-24 CN CN201720090148.8U patent/CN206426805U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106828032A (en) * | 2017-01-24 | 2017-06-13 | 天津商业大学 | A kind of carbon dioxide automobile air conditioner system of both vapor compression auxiliary supercooling |
| CN109551996A (en) * | 2018-12-05 | 2019-04-02 | 上海交通大学 | Assist the carbon dioxide automobile heat pump air-conditioning system of supercooling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170822 Termination date: 20180124 |