CN103925730A - Electric automobile air conditioning system - Google Patents
Electric automobile air conditioning system Download PDFInfo
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- CN103925730A CN103925730A CN201310015507.XA CN201310015507A CN103925730A CN 103925730 A CN103925730 A CN 103925730A CN 201310015507 A CN201310015507 A CN 201310015507A CN 103925730 A CN103925730 A CN 103925730A
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Abstract
The invention relates to the field of automobile air conditioning systems, and discloses an electric automobile air conditioning system. The electric automobile air conditioning system comprises a compressor (1), an outdoor heat exchanger (2), an indoor heat exchanger (3) and a throttle valve (4), and further comprises a first check valve (10), a second check valve (11) and an indoor auxiliary heat exchanger (6), wherein the second check valve (11) is connected with the indoor auxiliary heat exchanger (6) in series and used for heating, and forms a heating branch circuit, the first check valve (10) is used for refrigeration and forms a refrigeration branch circuit, and the heating branch circuit is connected with the refrigeration branch circuit in parallel. The electric automobile air conditioning system is based on an existing refrigeration system of a traditional automobile air conditioner, and achieves refrigeration and heating functions. Compared with a traditional automobile air conditioning system, the indoor auxiliary heat exchanger is added on the electric automobile air conditioning system, and therefore the electric automobile air conditioning system can provide heating effects which meet requirements of people. Furthermore, the electric automobile air conditioning system has the advantages of being low in cost, reliable in performance, easy to popularize and use and the like.
Description
Technical field
The present invention relates to automotive air-conditioning system field, especially a kind of electric automobile air-conditioning system.
Background technology
Traditional air conditioning for automobiles as shown in Figure 1, the closed circuit system consisting of compressor X1, the outdoor heat exchanger X2, reservoir X3, choke valve X4, indoor heat exchanger X5, the compressor X1 that connect successively realizes refrigeration, heats the circuit system absorption engine exhaust heat forming by outdoor water-side heat X6, indoor water-side heat X7 and intermediate member and realizes.
Along with scientific and technical progress and the development of auto industry, at present, the efficiency of automobile engine is more and more higher, this just make engine can be used under operating mode in the winter time into the waste heat of car heating of house fewer and feweri; Simultaneously for the electric automobile as next step development trend of automobile, it does not have orthodox car to be used for the engine exhaust heat of heating, and heating thermal source cannot be provided.Therefore no matter be existing fuel-engined vehicle, or the air-conditioning system of electric automobile all must self have the function heating, i.e. pump type heat automotive air-conditioning system.
The patent No. is that 200910158502.6 Chinese invention patent application discloses a kind of electric automobile air-conditioning system, this air-conditioning system is mainly combined into by two cover air-conditioning systems, switched by magnetic valve, its critical piece comprises: internal condensation device, external boiler, inner evaporator, external condensation device and two heating power expansion valves.This air-conditioning system is utilized the heat of the generating set waste gas on electric automobile and external boiler to carry out heat exchange and is realized heating effect, but electric automobile does not have the thermal source that can utilize, cannot realize and heat needs, this system has increased internal condensation device and external boiler simultaneously, complex structure, high cost.
Application number is that 200610021052.2 Chinese invention patent application discloses another kind of electric automobile air-conditioning system, this air-conditioning system comprises compressor, external heat exchanger, inner evaporator and internal condensation device, mode-changeover device, first throttle valve and the second choke valve, wherein, compressor, external heat exchanger, first throttle valve, inner evaporator, the formation refrigerating circuit that is connected of compressor order, compressor, internal condensation device, the second choke valve, external heat exchanger, the compressor order formation heating circuit that is connected, compressor, internal condensation device, the second choke valve, external heat exchanger, first throttle valve, inner evaporator, the compressor order formation defrosting/loop dehumidification that is connected, mode-changeover device switches between three loops.This air-conditioning system can solve the problems such as electric automobile heating in the situation that there is no internal combustion engine heat radiation as thermal source, refrigeration, defrosting, demist, but because inner space of vehicle is limited, the area of dissipation of its indoor heat exchanger and external heat exchanger is difficult to meet bidirectional high-efficiency coupling simultaneously, indoor heat exchanger exchange capability of heat deficiency can cause heating time, its heating capacity is diminished, can not meet instructions for use.
Summary of the invention
For solving above-mentioned electric automobile air-conditioning system complex structure of the prior art, high cost and the heating capacity problem such as can not satisfy the demand, the invention provides a kind of simple in structure, cost is lower and heating capacity is enough to satisfy the demand electric automobile air-conditioning system.
Electric automobile air-conditioning system provided by the invention comprises compressor, outdoor heat exchanger, indoor heat exchanger, choke valve, also comprises the first check valve, the second check valve and indoor supplementary heat exchanger; Described the second check valve is connected with indoor supplementary heat exchanger, and it forms and heat branch road for heating, and the first check valve is for refrigeration, is refrigeration branch road, and this heats branch road and refrigeration branch circuit parallel connection.
Preferably, described electric automobile air-conditioning system also comprises the first magnetic valve, the second magnetic valve, and this first magnetic valve and the second magnetic valve are by opening or close its a certain port and regulate refrigerant flow direction to heat branch road or refrigeration branch road and then realization heating or refrigerating function and heating or the switching of refrigerating function.
In above-mentioned arbitrary scheme preferably, described the first magnetic valve is three-way magnetic valve, have respectively the first port, the second port, the 3rd port, described the second magnetic valve is similarly three-way magnetic valve, also has respectively the first port, the second port, the 3rd port.
In above-mentioned arbitrary scheme preferably, described exhaust outlet of compressor connects the first magnetic valve the 3rd port, first magnetic valve the first port connects outdoor heat exchanger and second magnetic valve the second port, outdoor heat exchanger is connected with choke valve, indoor heat exchanger successively, indoor heat exchanger connects first magnetic valve the second port and second magnetic valve the first port, and the second magnetic valve the 3rd port connects suction port of compressor.
In above-mentioned arbitrary scheme, preferably, described electric automobile air-conditioning system also comprises reservoir.
Further preferably, described exhaust outlet of compressor connects the first magnetic valve the 3rd port, first magnetic valve the first port connects outdoor heat exchanger and second magnetic valve the second port, outdoor heat exchanger is connected with choke valve, indoor heat exchanger successively, indoor heat exchanger connects first magnetic valve the second port and second magnetic valve the first port, the second magnetic valve the 3rd port connects reservoir entrance, and reservoir outlet connects suction port of compressor.
In above-mentioned arbitrary scheme preferably, described in heat branch road and be positioned on the pipeline that is connected choke valve and indoor heat exchanger with the parallel line of refrigeration branch road composition.
In above-mentioned arbitrary scheme, preferably, under heating mode, described second, third port of the first magnetic valve is opened, the first port shutdown, and described second, third port of the second magnetic valve is opened, the first port shutdown.
In above-mentioned arbitrary scheme, preferably, under refrigeration mode, described the first magnetic valve first, the 3rd port are opened, the second port shutdown, and described the second magnetic valve first, the 3rd port are opened, the second port shutdown.
In above-mentioned arbitrary scheme, preferably, described choke valve is silicon expansion valve.
Electric automobile air-conditioning system provided by the invention, on the basis of orthodox car air-conditioning, has been removed heating, has realized refrigeration and heat-production functions on the basis of its refrigeration system, has met the needs of electric automobile; And the present invention, by an indoor supplementary heat exchanger is set, is equivalent to increase indoor heat exchange area, and then has increased the heating capacity while heating, overcome indoor heat exchanger exchange capability of heat deficiency in prior art, the defect that heating capacity can not be satisfied the demand; The simultaneously increase of indoor supplementary heat exchanger, the lifting amplitude of compressor exhaust temperature and system pressure can reduce compressor rotary speed and improve time, can ensure that air-conditioning system can stably normally work in the time that compressor rotary speed improves.
On the other hand, the heating of electric automobile air-conditioning system provided by the invention and refrigeration system share most of pipeline, only heating branch road is separate with refrigeration branch road, reduce like this weight of automotive air-conditioning system, and then alleviated the weight of electric automobile, reduce the energy resource consumption of electric automobile.
A good effect more of the present invention is, owing to continuing to use the refrigeration system of existing air conditioning for automobiles, institute is so that taking existing automotive air-conditioning system as basis upgrading repacking, upgrade cost and the application cost of technology are lower, are easy to apply.
Brief description of the drawings
Fig. 1 is the structural representation of existing automotive air-conditioning system;
Fig. 2 is the structural representation of a preferred embodiment of electric automobile air-conditioning system provided by the invention;
Fig. 3 is the refrigeration mode schematic diagram of preferred embodiment shown in Fig. 2;
Fig. 4 is the heating mode schematic diagram of preferred embodiment shown in Fig. 2;
Fig. 5 is the structural representation of another embodiment of electric automobile air-conditioning system provided by the invention;
Fig. 6 is the refrigeration mode schematic diagram of Fig. 5 illustrated embodiment;
Fig. 7 is the heating mode schematic diagram of Fig. 5 illustrated embodiment.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
First, before being described in detail, the specific embodiment of the present invention needs traditional automotive air-conditioning system to briefly explain.
Please refer to Fig. 1, Fig. 1 is the structural representation of traditional automotive air-conditioning system.As shown in Figure 1, traditional air conditioning for automobiles is realized refrigeration by following working cycles: compressor X1 is transported to the cold-producing medium of HTHP gaseous state (for example R134a) in outdoor heat exchanger X2, cold-producing medium release heat in outdoor heat exchanger X2, the cold-producing medium of HTHP gaseous state becomes middle temperature high-pressure liquid, then enter into reservoir X3, pass through afterwards the reducing pressure by regulating flow of choke valve X4, cold-producing medium becomes the damp steam of low-temp low-pressure, enter into afterwards indoor heat exchanger X5, in indoor heat exchanger X5, cold-producing medium absorbs the indoor heat of car under the effect of evaporimeter, blowing cold air, reduce car indoor temperature, reach the effect of refrigeration, cold-producing medium is transformed into the gaseous refrigerant of low-temp low-pressure, enter into compressor X1, the cold-producing medium of low-temp low-pressure gaseous state is become HTHP gaseous state by compressor X1 acting, then enter into outdoor heat exchanger X2, continue next kind of refrigeration cycle.
Continue referring to Fig. 1, heating of traditional automotive air-conditioning system is that an other cover system by being different from above-mentioned refrigeration system is realized, its operation principle is as follows: orthodox car uses internal combustion engine as dynamical system, because internal combustion engine distributes a large amount of heats in the time working, these heats that distribute have not only caused the waste of energy, if cannot dispel the heat timely, these heats also affect the normal work of internal combustion engine, so, near people position internal combustion engine arranges a water side room external heat exchanger X6, cooling water is equipped with in its inside, these cooling waters can absorb these heats, lower the temperature to internal combustion engine, cooling water becomes hot water after absorbing these heats, people utilize these hot water that it is transported in water side indoor heat exchanger X7 by pipeline, in water side indoor heat exchanger X7, hot water release heat, car indoor temperature is raise, and after hot water release heat, become cold water, enter into water side room external heat exchanger X6 by pipeline again, as the cooling water of internal combustion engine, the heat that absorption internal combustion engine distributes becomes hot water, form a complete working cycles.
Electric automobile air-conditioning system of the present invention, taking the refrigeration system of above-mentioned existing orthodox car air-conditioning system as basis, is removed its heating and is increased an indoor supplementary heat exchanger and realize refrigeration and heat-production functions, meets the needs of electric automobile to refrigeration and heating.Technical scheme and the good effect of electric automobile air-conditioning system of the present invention are described as an example of two preferred embodiments example below.
Please refer to Fig. 2, the structural representation of the preferred embodiment that Fig. 2 is electric automobile air-conditioning system provided by the invention.As shown in Figure 2, electric automobile air-conditioning system comprises compressor 1, outdoor heat exchanger 2, indoor heat exchanger 3, choke valve 4, reservoir 5 and the first magnetic valve 8, the second magnetic valve 9 and the first check valve 10, the second check valve 11, indoor supplementary heat exchanger 6.
Indoor supplementary heat exchanger 6 and the second check valve 11 form a branch road, for heating, and for heating branch road, the refrigeration branch circuit parallel connection at itself and the first check valve 10 places, and be installed on the pipeline that connects choke valve 4 and indoor heat exchanger 3.
The first magnetic valve 8 and the second magnetic valve 9 are all three-way magnetic valves, all have respectively three ports.Wherein, the first magnetic valve 8 the 3rd port is connected with compressor 1 exhaust outlet, the first magnetic valve 8 first ports connect outdoor heat exchanger 2 and the second magnetic valve 9 second ports, indoor heat exchanger 3 connects the first magnetic valve 8 second ports and the second magnetic valve 9 first ports, and the second magnetic valve 9 the 3rd port connects reservoir 5 entrances.
Outdoor heat exchanger 2 is connected with choke valve 4, indoor heat exchanger 3 successively, and reservoir 5 outlets connect compressor 1 entrance.
Choke valve 4 is silicon expansion valve, because electric automobile air-conditioning system operating condition is severe, so the good silicon expansion valve of selecting anti-shake performance can well adapt to the working environment of electric automobile air-conditioning system, has improved the reliability of automotive air-conditioning system.
Choke valve 4 is the power drives of direct current 12V by voltage, this voltage supply voltage shared with electric automobile other equipment except the power supply of drive motor and compressor is identical, choke valve 4 uses the power drives with this voltage, can improve the versatility of itself and other equipment of electric automobile.
Please refer to Fig. 3, Fig. 3 is the refrigeration mode schematic diagram of preferred embodiment shown in Fig. 2.As shown in Figure 3, under refrigeration mode, the first magnetic valve 8 first, the 3rd port opens, the second port shutdown, the second magnetic valve 9 first, the 3rd port opens, the second port shutdown.
In the case, electric automobile air-conditioning system refrigeration work circulates as shown in arrow in Fig. 3 and solid line: compressor 1 → the first magnetic valve 8 → outdoor heat exchanger 2 → choke valve 4 → the first check valve 10 → indoor heat exchanger 3 → the second magnetic valve 9 → reservoir 5 → compressors 1.Compressor 1 for example, from its exhaust outlet discharging refrigerant (R134a), now cold-producing medium is for being HTHP gaseous state, enter into outdoor heat exchanger 2 by the first magnetic valve 8, carry out heat release, condensation of refrigerant becomes middle temperature high-pressure liquid, pass through afterwards the reducing pressure by regulating flow of choke valve 4, cold-producing medium becomes the damp steam of low-temp low-pressure, and after enter into indoor heat exchanger 3 through the refrigeration branch road at the first check valve 10 places, in indoor heat exchanger 3, cold-producing medium absorbs the indoor heat of car, blowing cold air, car indoor temperature is reduced, produce refrigeration, cold-producing medium absorbs heat and becomes gaseous state, enter into reservoir 5 through the second magnetic valve 9, then enter into compressor 1 from reservoir 5, compressor 1 does work the cold-producing medium of low-temp low-pressure gaseous state is become to HTHP gaseous state, then discharge and enter into outdoor heat exchanger 2 by the first magnetic valve 8 from compressor 1 exhaust outlet, thereby form a complete kind of refrigeration cycle.
Please refer to Fig. 4, Fig. 4 is the heating mode schematic diagram of preferred embodiment shown in Fig. 2.As shown in Figure 4, under heating mode, second, third port of the first magnetic valve 8 is opened, the first port shutdown, and second, third port of the second magnetic valve 9 is opened, the first port shutdown.
In the case, electric automobile air-conditioning system heats working cycles as shown in arrow in Fig. 4 and solid line: compressor 1 → the first magnetic valve 8 → indoor heat exchanger 3 → indoor supplementary heat exchanger 6 → the second check valve 11 → choke valve 4 → outdoor heat exchanger 2 → the second magnetic valve 9 → reservoir 5 → compressors 1.Compressor 1 is from its exhaust outlet discharging refrigerant, now cold-producing medium is HTHP gaseous state, enter into indoor heat exchanger 3 through the first magnetic valve 8, release heat, blow out hot blast, car indoor temperature is raise, produce heating effect, and due to inner space of vehicle restriction, the condensation area of indoor heat exchanger 3 is relatively little, fully heat exchange of high temperature and high pressure gaseous refrigerant, and then cause heating capacity deficiency, cannot satisfy the demand, so after indoor heat exchanger 3, car indoor temperature raises, but still cannot meet the needs of people to car indoor heating.
Cold-producing medium after indoor heat exchanger 3 continues to enter into indoor supplementary heat exchanger 6 along pipeline, in indoor supplementary heat exchanger 6, the further release heat of cold-producing medium, further rising car indoor temperature, reach the heating effect needing, and cold-producing medium becomes liquid state after now releasing heat, and after enter into choke valve 4 through the second check valve 11, through the reducing pressure by regulating flow of choke valve 4, enter into outdoor heat exchanger 2 and absorb heat, cold-producing medium becomes gaseous state, then through the second magnetic valve 9, enter into reservoir 5, enter into compressor 1 from reservoir 5 again, do work and become high temperature and high pressure gas through compressor 1, enter into indoor heat exchanger 3 release heat through the first magnetic valve 8 afterwards, start the next one and heat circulation.
Please refer to Fig. 5-Fig. 7, Fig. 5-Fig. 7 is respectively the structural representation of another preferred embodiment of electric automobile air-conditioning system of the present invention, refrigeration mode schematic diagram, heating mode schematic diagram.Different from first embodiment is, the present embodiment has been removed reservoir, make the second magnetic valve the 3rd port directly and suction port of compressor join, other are all identical with first embodiment, compare first embodiment, the present embodiment simplifies the structure and the flow process of working cycles more, also more provides cost savings.
In the working cycles of above-mentioned two embodiment, the indoor supplementary heat exchanger 6 increasing compared to existing technology, it is equivalent to increase compared to existing technology indoor heat exchange area, play the cold-producing medium effect of release heat more up hill and dale that makes, thereby can reach better heating effect, overcome in prior art and heated deficiency, cannot meet the defect of car indoor heating needs; And in the time that compressor rotary speed improves, it can reduce the delivery temperature of compressor and the lifting amplitude of system pressure, the system that can ensure is normally worked, and avoids occurring because compressor rotary speed improves the situation that sharply raises and cause system to work that causes compressor exhaust temperature and system pressure.
In concrete enforcement, outdoor heat exchanger and indoor heat exchanger all can be continued to use outdoor heat exchanger and the indoor heat exchanger in orthodox car air-conditioning system, indoor supplementary heat exchanger can be arranged at the position of the indoor water-side heat of orthodox car air-conditioning system, and the appearance and size of indoor supplementary heat exchanger also can be designed to the appearance and size identical with the indoor water-side heat of orthodox car air-conditioning system.
By the way, can improve to greatest extent the versatility of electric automobile air-conditioning system and orthodox car air-conditioning system, reduce the change to orthodox car air-conditioning system, the benefit of doing is like this: cost is low, technology maturity is high, dependable performance, and by orthodox car air-conditioning system is very simply transformed and can be transform as electric automobile air-conditioning system, be easy to apply.
By reference to the accompanying drawings the specific embodiment of the present invention is done to detailed explanation above; but the present invention is not limited to above-mentioned explanation; in the ken possessing those of ordinary skill in the art; can also under the prerequisite that does not depart from aim of the present invention, make various variations, it all belongs to protection scope of the present invention.
Claims (10)
1. electric automobile air-conditioning system, comprises compressor (1), outdoor heat exchanger (2), indoor heat exchanger (3), choke valve (4), it is characterized in that, also comprises the first check valve (10), the second check valve (11) and indoor supplementary heat exchanger (6); Described the second check valve (11) is connected with indoor supplementary heat exchanger (6), and it forms and heat branch road for heating, and the first check valve (10) is for refrigeration, is refrigeration branch road, and this heats branch road and refrigeration branch circuit parallel connection.
2. electric automobile air-conditioning system claimed in claim 1, it is characterized in that, described electric automobile air-conditioning system also comprises the first magnetic valve (8), the second magnetic valve (9), and this first magnetic valve (8) and the second magnetic valve (9) are by opening or close its a certain port and regulate refrigerant flow direction to heat branch road or refrigeration branch road and then realization heating or refrigerating function and heating or the switching of refrigerating function.
3. electric automobile air-conditioning system claimed in claim 2, it is characterized in that, described the first magnetic valve (8) is three-way magnetic valve, there is respectively the first port, the second port, the 3rd port, described the second magnetic valve (9) is similarly three-way magnetic valve, also has respectively the first port, the second port, the 3rd port.
4. electric automobile air-conditioning system according to claim 3, it is characterized in that, described compressor (1) exhaust outlet connects the 3rd port of the first magnetic valve (8), the first magnetic valve (8) first ports connect outdoor heat exchanger (2) and the second magnetic valve (9) second ports, outdoor heat exchanger (2) is connected with choke valve (4), indoor heat exchanger (3) successively, indoor heat exchanger (3) connects the first magnetic valve (8) second ports and the second magnetic valve (9) first ports, and the second magnetic valve (9) the 3rd port connects compressor (1) entrance.
5. according to the electric automobile air-conditioning system described in claim 1 or 3, it is characterized in that, described electric automobile air-conditioning system also comprises reservoir (5).
6. electric automobile air-conditioning system according to claim 5, it is characterized in that, described compressor (1) exhaust outlet connects the 3rd port of the first magnetic valve (8), the first port of the first magnetic valve (8) connects the second port of outdoor heat exchanger (2) and the second magnetic valve (9), outdoor heat exchanger (2) successively with choke valve (4), indoor heat exchanger (3) series connection, indoor heat exchanger (3) connects the second port of the first magnetic valve (8) and the first port of the second magnetic valve (9), the 3rd port of the second magnetic valve (9) connects reservoir (5) entrance, reservoir (5) outlet connects compressor (1) entrance.
7. according to the electric automobile air-conditioning system described in any one in claim 1,4,6, it is characterized in that, described in heat branch road and be positioned on the pipeline that is connected choke valve (4) and indoor heat exchanger (3) with the parallel line of refrigeration branch road composition.
8. according to the electric automobile air-conditioning system described in any one in claim 3,4,6, it is characterized in that: under heating mode, second, third port of described the first magnetic valve (8) is opened, the first port shutdown, second, third port of described the second magnetic valve (9) is opened, the first port shutdown.
9. according to the electric automobile air-conditioning system described in any one in claim 3,4,6, it is characterized in that, under refrigeration mode, described the first magnetic valve (8) first, the 3rd port opens, the second port shutdown, described the second magnetic valve (9) first, the 3rd port opens, the second port shutdown.
10. electric automobile air-conditioning system according to claim 1, is characterized in that, described choke valve (4) is silicon expansion valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310015507.XA CN103925730A (en) | 2013-01-16 | 2013-01-16 | Electric automobile air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310015507.XA CN103925730A (en) | 2013-01-16 | 2013-01-16 | Electric automobile air conditioning system |
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| CN103925730A true CN103925730A (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310015507.XA Pending CN103925730A (en) | 2013-01-16 | 2013-01-16 | Electric automobile air conditioning system |
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| CN (1) | CN103925730A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771963A (en) * | 2015-09-17 | 2017-05-31 | 盾安美斯泰克股份有限公司 | Test equipment arrangement with superheat controller |
| CN111251805A (en) * | 2018-11-30 | 2020-06-09 | 比亚迪股份有限公司 | Vehicle, thermal management system of vehicle and control method of thermal management system |
| CN111486550A (en) * | 2020-04-27 | 2020-08-04 | 广东美的制冷设备有限公司 | Control method and device of air conditioner, air conditioner and electronic equipment |
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| CN111486550A (en) * | 2020-04-27 | 2020-08-04 | 广东美的制冷设备有限公司 | Control method and device of air conditioner, air conditioner and electronic equipment |
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Application publication date: 20140716 |