CN103158486A - Car air-conditioning system - Google Patents
Car air-conditioning system Download PDFInfo
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- CN103158486A CN103158486A CN2011104240674A CN201110424067A CN103158486A CN 103158486 A CN103158486 A CN 103158486A CN 2011104240674 A CN2011104240674 A CN 2011104240674A CN 201110424067 A CN201110424067 A CN 201110424067A CN 103158486 A CN103158486 A CN 103158486A
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Abstract
A car air-conditioning system comprises a heating component temperature control circuit and a heat pump system with a refrigerant circulation loop. The heating component temperature control circuit and the heat pump system with the refrigerant circulation loop exchange heat through a double passageway heat exchanger. The car air-conditioning system comprises a refrigerating mode, a heating mode and a demist mode. The heat pump system with the refrigerant circulation loop comprises a compressor, a gas-liquid separator, a heater and a cooler, a compartment outer heat exchanger and a throttling component. The heater and the cooler conduct heating, cooling or demisting on the compartment according to working condition requirements in the compartment. The refrigerant passes through the heater after coming out from the compressor, the heater can choose whether to conduct heat exchange, and then the refrigerant flows into the compartment outer heat exchanger. The heater of the heat pump system just passes hot refrigerant, and the cooler just passes the cold refrigerant so as to avoid heat and cold shock and improve service life.
Description
Technical field
The present invention relates to the automobile air conditioning technology field, particularly a kind of electric automobile air-conditioning system.
Background technology
Along with the development of low-carbon economy, energy-saving and emission-reduction have been proposed stricter requirement, electronlmobil becomes one of development of automobile aspect from now on due to energy-conserving and environment-protective being arranged.But electronlmobil is owing to using battery as power resources, and its a/c system also is different from original automotive air-conditioning system.
Along with improving constantly of quality of the life, comfort level in automobile bodies also more and more is subject to people's attention, traditional internal combustion engine type automobile, can utilize the waste heat of combustion engine and the heat of engine exhaust to come vehicle cabin, and the power of electronlmobil mainly comes from motor, the heat that has lacked driving engine can utilize, thereby is difficult to reach the heating requirement in winter.In prior art, for the temperature in the compartment of realizing electronlmobil remains on the comfortable temperature of human body sensory, some employings various ways heat in the compartment, as adopting independent thermal source, namely utilize the PTC heating; Perhaps utilize the fuel heating such as gasoline, kerosene, ethanol; The employing reclaiming scrap waste heat that also has, the more auxiliary independent thermal source that adopts; The employing heat pump that also has guarantees temperature in the compartment etc.
Yet, in above-mentioned various type of heating, if adopt independent thermal source, such as: purely use PTC to heat, need to consume the energy of more battery, and then can reduce the travelled distance of automobile; If adopt the fuel heating, not only the efficiency of heating surface is lower, pollutes but also can produce environment, can increase simultaneously the load of automobile.In addition, blowing cold air in compartment during demist in present air conditioning for automobiles can cause uncomfortable in the compartment when weather is relatively cold.
So at present, those skilled in the art need to solve at present, following technical matters is arranged: electric automobile air-conditioning system can be moved, to guarantee the comfort level in car under the complicated weather of weather-proof; Heat generating components (such as motor frequency conversion device, battery etc.) is worked, to keep relatively high efficient in normal range of temperatures; Can guarantee the optimization of the cost performance (initial cost, operating cost and performance) of refrigeration system.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of electric automobile air-conditioning system, comprises heat pump, electric automobile air-conditioning system can be moved, to guarantee relative comfort level in car under the complicated weather of weather-proof; Heat generating components (such as motor frequency conversion device, battery etc.) is worked, to keep relatively high efficient in normal range of temperatures.The present invention is by the following technical solutions:
A kind of automotive air-conditioning system, comprise heat generating components temperature control loop and the heat pump with refrigerant circulation circuit, wherein refrigerant circulation circuit and heat generating components temperature control loop carry out interchange of heat by the dual channel H Exch, the first flow of described dual channel H Exch is communicated with refrigerant circulation circuit, and the second runner of dual channel H Exch is communicated with the heat generating components temperature control loop; Described automotive air-conditioning system has: refrigeration mode, heating mode, demist pattern, battery pre-warm pattern be totally four kinds of mode of operations; Described heat pump comprises compressor, be positioned at vapour liquid separator, the temperature booster that heat is provided to the compartment that arranges respectively before compressor inlet and provide to the compartment cold cooling vessel, be positioned at the compartment outer heat-exchanger compartment outside, reach orifice union; Described temperature booster and cooling vessel carry out heat supply, cooling or demist for described compartment according to the operating mode demand in the compartment; Described temperature booster and compartment outer heat-exchanger can select to carry out interchange of heat; The refrigerant that the described temperature booster of described heat pump only becomes popular, and described cooling vessel is only walked cold refrigerant, to avoid thermal shock; Refrigerant first leads to described temperature booster from compressor after out, also be provided with three-way solenoid valve on the pipeline of described heater outlet, an interface of three-way solenoid valve directly or indirectly leads to the compartment outer heat-exchanger, and the another one interface directly or indirectly leads to the first flow of dual channel H Exch.
Preferably, in the refrigerant circulation circuit of described heat pump, first flow for described dual channel H Exch is provided with second bypass flow path, be provided with the first flow of solenoid electric valve or described dual channel H Exch and the junction of described the second bypass flow path and be provided with solenoid electric valve on described the second bypass flow path, to control the flow by the refrigerant of dual channel H Exch first flow, further guarantee the temperature controlled requirement for heat element.
Preferably, in the refrigerant circulation circuit of described heat pump, be provided with the bypass passageways of a refrigerant for the described cooling vessel that cold is provided in the compartment, the conducting when heat pump operation heating mode or battery pre-warm pattern of described bypass passageways.
Preferably, the refrigerant circulation circuit of described heat pump comprises the second three-way solenoid valve, the second three-way solenoid valve is arranged in pipeline between cooling vessel and dual channel H Exch, and it can optionally control the conducting of the described bypass passageways of the stream that leads to described cooling vessel or described cooling vessel.
Preferably, described dual channel H Exch is plate type heat exchanger.
Preferably, the storage capacity of the refrigerant liquid in described vapour liquid separator is the 20-40 % of described heat pump coolant injection amount.
Preferably, described orifice union is electric expansion valve or heating power expansion valve.
Preferably, described automotive air-conditioning system also comprises the blower fan of blowing in the compartment, and when described heat pump was in the demist pattern, the wind that described blower fan is sent was first to dehumidify by described cooling vessel, then by being sent to after temperature booster in the compartment; Described temperature booster can heat or not heat optionally for the wind after dehumidifying according to the operating mode in the compartment, to guarantee the comfort level in the compartment.
Preferably, be provided with the first air door at the ventilation inlet of described temperature booster, the first air door can step-less adjustment, thereby the adjusting by described the first air door realizes the control and regulation of the ratio of the air quantity by temperature booster;
Preferably, described automotive air-conditioning system also is provided with ptc heater in described compartment, when heating mode by the described ptc heater of open and close optionally controlling the temperature in the compartment, and the wind in the described compartment is first by temperature booster, blow by described ptc heater and then in the compartment again.
Preferably, the refrigerant circulation circuit of described heat pump also comprises the 3rd bypass flow path of a bypass described compartment outer heat-exchanger, when system is demist pattern and heating mode, and described the 3rd bypass flow path of conducting optionally.
Compared with prior art, the present invention has the following advantages: a/c system of the present invention is by arranging battery pre-warm pattern, can avoid that the temperature of environment for use is too low to exert an influence and affect the problem of travelled distance battery life, when automotive operation snows heavily as in exceedingly odious sky in the relatively low situation of temperature, at this moment the ambient temperature of battery periphery is well below normal operating temperature, like this when beginning to start automobile, just can be to the elements such as battery be carried out pre-warm, it is rapidly heated, with service life and the assurance travelled distance that guarantees battery.Simultaneously a/c system of the present invention, be provided with cooling vessel and temperature booster in the compartment, and both arrange respectively, can avoid the impact of high low temperature in heat exchanger, to improve heat exchanger service life; And during the demist pattern, heater and cooling vessel, realize the effect of heating again of dehumidifying simultaneously simultaneously, guarantees the humiture in the compartment, thereby satisfy the comfort requirement in the compartment.
Description of drawings
Fig. 1 is the pipeline connection diagram of the first specific embodiment of the present invention when refrigeration mode;
Fig. 2 is the pipeline connection diagram of the first specific embodiment of the present invention when heating mode;
Fig. 3 is the pipeline connection diagram of the first specific embodiment of the present invention when the demist pattern;
Fig. 4 is the pipeline connection diagram of the first specific embodiment of the present invention when the pre-dim pattern of battery;
Fig. 5 is the wet schematic diagram of enthalpy that the first specific embodiment of the present invention dehumidifies when the demist pattern;
Fig. 6 is the pipeline connection diagram of the second specific embodiment of the present invention.
The specific embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
A/c system of the present invention has: refrigeration mode, heating mode, demist pattern, battery pre-warm pattern be totally four kinds of mode of operations.The first specific embodiment of the present invention such as Fig. 1-shown in Figure 5, wherein Fig. 1 is the pipeline connection diagram of the first specific embodiment of the present invention when refrigeration mode, Fig. 2 is the pipeline connection diagram of the first specific embodiment of the present invention when heating mode, Fig. 3 is the pipeline connection diagram of the first specific embodiment of the present invention when the demist pattern, Fig. 4 is the pipeline connection diagram of the first specific embodiment of the present invention when the pre-dim pattern of battery, and Fig. 5 is the wet schematic diagram of the enthalpy of the first specific embodiment of the present invention when dehumidifying.Wherein the dotted line in figure represents that this place's pipeline is cut off not conducting.
As shown in Figure 1, a/c system comprises heat pump and the heat generating components temperature control loop with refrigerant circulation circuit, wherein carry out interchange of heat by a dual channel H Exch 16 between refrigerant circulation circuit and heat generating components temperature control loop: the first flow of dual channel H Exch 16 is communicated with refrigerant circulation circuit, the second runner of dual channel H Exch 16 is communicated with the heat generating components temperature control loop, and refrigerant circulation circuit and heat generating components temperature control loop can carry out interchange of heat at dual channel H Exch 16.Heat pump comprises compressor 10, be positioned at vapour liquid separator 11, the temperature booster 18 that heat is provided to the compartment that arranges respectively before compressor inlet and provide to the compartment cold cooling vessel 17, be positioned at compartment outer heat-exchanger 13, orifice union outside the compartment; Temperature booster 18 in described compartment and cooling vessel 17 can be selected to carry out heat supply, cooling or demist to described compartment according to the operating mode demand in the compartment.Temperature booster 18 and cooling vessel 17 can be arranged at also can be arranged at outside the compartment in the compartment and blow in the compartment by pipeline.
Heat pump also comprises control valve member and the pipeline connecting parts that the pilot piping refrigerant flows, particularly, comprise the three-way solenoid valve 124 that is arranged between temperature booster 18 and compartment outer heat-exchanger 13, three-way solenoid valve 124 also has an interface to be connected to an end of dual channel H Exch 16; Be provided with triplate line spare 121 in addition on the pipeline between three-way solenoid valve 124 and compartment outer heat-exchanger 13, another interface of triplate line spare 121 is connected with electromagnetic valve 122, another interface of electromagnetic valve 122 is connected with triplate line spare 123, and another two interfaces of triplate line spare 123 are connected with the import of vapour liquid separator 11, the outlet of cooling vessel 17 respectively.
When needed to freeze in car summer, the refrigerant circulation circuit of heat pump switched to refrigeration mode, and under refrigeration mode, the first air door 25 apertures that make temperature booster 18 are zero, allowed the air channel bypass, did not allow wind through temperature booster 18.when the gaseous coolant of High Temperature High Pressure from compressor 10 out, during through temperature booster 18, owing to there is no the wind process this moment, so, can not produce interchange of heat with air through the refrigerant of temperature booster, electromagnetic valve 122 is closed in addition, refrigerant is through three-way solenoid valve 124, arrive again triplate line spare 121, arrive again compartment outer heat-exchanger 13, carry out interchange of heat with air here, refrigerant is after the Bas Discharged heat, refrigerant carries out throttling by throttle valve component again, become the refrigerant of low-temp low-pressure, then by dual channel H Exch 16, carry out interchange of heat at dual channel H Exch 16 and heat generating components temperature control loop, to reduce the temperature of battery 21 heat elements such as grade, simultaneously, the water pump 22 of heat generating components temperature control loop starts, fluid such as the water of heat generating components temperature control loop are circulated, the battery of electronlmobil like this, the heat of the heat generating components 21 such as motor frequency conversion device is just passed to the fluid of heat generating components temperature control loop, and further pass to refrigerant in refrigerant circulation circuit by dual channel H Exch 16.Be to be provided with temperature booster, two radiatores of compartment outer heat-exchanger in heat pump of the present invention, can selectivity carry out interchange of heat.
Flowing to the inboard heat exchanger in compartment through refrigerant after dual channel H Exch 16 is cooling vessel 17 again, here with the compartment in air carry out interchange of heat, draw unnecessary heat in the compartment, reach the purpose of refrigeration.Refrigerant is after subcooler 17, become the gaseous fluid of low-temp low-pressure or the fluid of low-temp low-pressure gas-liquid two-phase, afterwards, again by getting back to gas-liquid separator 11 after triplate line spare 32, triplate line spare 124, the gaseous coolant of low-temp low-pressure (super heat) is got back to compressor 10, do work by compressor 10, then the gaseous coolant of low-temp low-pressure is become the gaseous coolant of High Temperature High Pressure, form a refrigerating cycle.Throttle valve component can be selected heating power expansion valve; Be in addition the restriction effect of assurance refrigerant fluid in the present embodiment, throttle valve component is preferentially selected electric expansion valve 14.
Due to when the refrigeration mode, the heat generating components such as the battery of electronlmobil, motor frequency conversion device are to need certain cooling degree, are not more low better; For this reason, dual channel H Exch 16 also is provided with the second bypass flow path, and the first flow with dual channel H Exch 16 has been arranged in parallel by passage specifically, is provided with solenoid electric valve 15 in by passage; Can be divided into two-way by threeway 31 through the refrigerant fluid after throttle valve component like this, wherein the first branch road by solenoid electric valve 15, and the second three-way solenoid valve 19 directly flow to cooling vessel 17; Flow to again the second three-way solenoid valve 19 after other one tunnel process dual channel H Exch 16 together with the first branch road converges, then flow to cooling vessel 17.In addition, heat radiation requirement for heat generating components such as the battery that guarantees electronlmobil, motor frequency conversion devices, also can will cut off through the first branch road after electric expansion valve 14, particularly as the form of closing by solenoid electric valve 15, like this, the refrigerant of refrigerant circulation circuit carries out interchange of heat with the heat generating components temperature control loop here just all by dual channel H Exch 16.Particularly, solenoid electric valve 15 cuts out, and opens the water pump 22 that makes the circulation of heat generating components temperature control loop; From electric expansion valve 14 low temperature refrigerant out just all through dual channel H Exch 16.In addition, can also regulate by the action control of solenoid electric valve 15 by the cold medium flux of dual channel H Exch 16, the discharge by water pump 22 regulation heating parts temperature control loops simultaneously can be controlled the cold of using of the heat generating components such as battery easily.Like this, the control of the discharge by water pump 22 and the adjusting of solenoid electric valve 15 can be controlled the cold of using of the heat generating components such as battery easily, and the temperature that also can satisfy battery is controlled in the working temperature range of its better use.That is to say, be provided with second bypass flow path for the first flow by dual channel H Exch 16, and solenoid electric valve 15 is set on the second bypass flow path, action control by solenoid electric valve 15 guarantees the flow by the refrigerant of dual channel H Exch 16, further guarantees the temperature controlled requirement for heat element such as battery 21.Dual channel H Exch 16 can be plate type heat exchanger particularly.In addition, the position that threeway 31 or threeway 29 can also be set in the junction of the first flow of dual channel H Exch 16 and described the second bypass flow path such as existing figure changes into a three-way solenoid valve is set, the same like this flow that can control the refrigerant of the first flow by dual channel H Exch 16, thus reach temperature controlled requirement to heat element such as battery 21.
Solenoid electric valve 15 in specification sheets of the present invention has the function that flow control is regulated, and controls and be not limited to simple switch.
When needed heat in the compartment winter, system switched to heating mode as shown in Figure 2, and electromagnetic valve 122 is closed, and three-way solenoid valve 124 leads to an interface unlatching of triplate line spare 121, and another interface is closed; The first air door 25 is opened, also can reach as shown maximum, avoid the wind bypass and without temperature booster 18, at this moment the type of flow of refrigerant circulation circuit is as follows: the gaseous coolant of High Temperature High Pressure from compressor 10 out, through temperature booster 18, the gaseous coolant of the High Temperature High Pressure of the air that passes through here and temperature booster 18 carries out interchange of heat, flows to the compartment after atmosphere temperature rising with the temperature in vehicle cabin; And after the airborne cold of refrigerant absorption, refrigerant through three-way solenoid valve 124, again arrive triplate line spare 121, again to compartment outer heat-exchanger 13, refrigerant carries out throttling by throttle valve component again, become the refrigerant of low-temp low-pressure, then by dual channel H Exch 16, again to the second three-way solenoid valve 19, the interface that the second three-way solenoid valve 19 leads to cooling vessel 17 is closed, another interface is opened, refrigerant from this interface enter again triplate line spare 32, and triplate line spare 123 after flow to vapour liquid separator 11, return compressor 10; Complete like this a circulation.At dual channel H Exch 16, the heat elements such as battery, motor frequency conversion device carry out the interchange of heat heat radiation by heat generating components temperature control loop and refrigerant.
In order further to control refrigerant by the flow of dual channel H Exch 16, thereby guarantee the accuracy of temperature control of the heat elements such as battery, motor frequency conversion device, first flow for dual channel H Exch 16 circulation refrigerants also is provided with a bypass passageways as the second bypass flow path, and in present embodiment, the second bypass flow path is provided with solenoid electric valve 15 and carries out this passage by the control of cold medium flux.If make the flow maximum of the first flow of dual channel H Exch 16 circulation refrigerants, solenoid electric valve 15 can cut out; Open simultaneously the water pump 22 of heat generating components temperature control loop circulation, thereby make from the first flow of electric expansion valve 14 refrigerant out through dual channel H Exch 16, carry out cooling to heat generating components; After the refrigerant of process dual channel H Exch 16 and the fluid of heat generating components temperature control loop circulation carry out interchange of heat, again through the second outlet of the second three-way solenoid valve 19 by leading to again vapour liquid separator 11 after a threeway 32, and get back to compressor and complete a circulation.At this moment the second three-way solenoid valve 19 leads to the first port closing of cooling vessel 17, and namely refrigerant is obstructed subcooler 17, has namely formed the bypass passageways of cooling vessel 17 between second of the second three-way solenoid valve 19 the outlet and threeway 32; Refrigerant first passes through bypass passageways, by after vapour liquid separator 11, the gaseous coolant of low-temp low-pressure (super heat) is got back to compressor 10, passes through compressor work again, again the gaseous coolant of low-temp low-pressure is become the gaseous coolant of High Temperature High Pressure, form a heat pump cycle; And if have liquid refrigerants, liquid refrigerants will be stored in vapour liquid separator 11 when the vapour liquid separator 11, to avoid compressor 10 liquid hammers or to cross the cold efficient that affects heat pump.
Like this, for the temperature control of the heat elements such as battery, control the adjusting of discharge and solenoid electric valve 15 by water pump 22, can control easily the cold of using of this part, namely the temperature of battery can be controlled in its applicable working temperature range.Simultaneously, due to the compartment outer heat-exchanger and be not used in cold scattering, so this heat pump need not deice mode.In addition, the bypass passageways of cooling vessel 17 is not limited to above-described mode, can also realize with two electromagnetic valves in addition.Also comprise ptc heater 26 in automotive air-conditioning system of the present invention in addition, heat only starting heat pump, and in the compartment, temperature is when also out of reach requires, ptc heater 26 starts and heats, and reaches the comfort level requirement to guarantee the temperature in the compartment.
When the moisture in needs are removed air or fog on glass, start the demist pattern, as shown in Figure 3, the first air door 25 can be in half-open or corresponding aperture position.If in the time of need to removing fast fog on glass or steam in addition, can directly close the first air door 25, and by corresponding airduct, directly cold wind be blowed to glass, reach the purpose of removing fast the glass surface mist.The mobile of its refrigerant is: the gaseous coolant of High Temperature High Pressure from compressor 10 out, through temperature booster 18, at this moment blower fan 24 is opened, so wind is arranged through temperature booster 18, the refrigerant through temperature booster 18 can produce interchange of heat with air like this, the interior air of heating car; Then refrigerant enters compartment outer heat-exchanger 13 through after three-way solenoid valve 124, here can select as required whether to carry out interchange of heat with air, then refrigerant carries out throttling by throttle valve component such as electric expansion valve 14, become the fluid of low-temp low-pressure, through the second three-way solenoid valve 19, then enter cooling vessel 17; Here the air in refrigerant and compartment carries out interchange of heat, because temperature in the surface temperature of cooling vessel relative compartment is much lower, therefore in this process, if the dew temperature of air is higher than the surface temperature of cooling vessel at this moment, just have moisture condensation and separate out and the pipeline that passes through to arrange is discharged on the surface of cooling vessel, the content that has so just reduced the water vapour in the air in a car compartment has namely reduced relative humidity, thereby reaches the purpose of demist in the compartment.Refrigerant is after subcooler, enter vapour liquid separator 11 by pipeline again, the gaseous coolant of low-temp low-pressure (saturated or super heat) is got back to compressor 10, by compressor 10 actings, again the gaseous coolant of low-temp low-pressure is become the gaseous coolant of High Temperature High Pressure, form a circulation.First to dry and then by temperature booster 18 through subcooler 17 and be sent to wind in the compartment, can select whether to heat at temperature booster 18, and then wind is delivered in the compartment, like this, except humidity has also guaranteed the temperature in the compartment simultaneously, namely satisfied the comfort level requirement.
in demist, if it is cooling that the heat generating components such as battery need, can control by the action of the solenoid electric valve 15 before the second three-way solenoid valve 19, the water pump 22 of open water circulation, make refrigerant first pass through the first flow of dual channel H Exch 16, make the fluid of refrigerant in dual channel H Exch 16 and heat generating components temperature control loop carry out interchange of heat, also can make the part refrigerant first by dual channel H Exch 16, be beneficial to like this control the temperature of the fluid in the heat generating components temperature control loop, control the action of discharge and solenoid electric valve 15 regulates by water pump 22, thereby can control easily the working temperature range with heat generating components uses such as cold control batteries of the heat generating components such as battery.
Particularly, the psychrometric chart of demist process as shown in Figure 5, Fig. 5 is the wet schematic diagram of the enthalpy of the first specific embodiment of the present invention when dehumidifying: at first by outdoor new wind W point and indoor N point, be mixed together the point to C, be cooled to L point (dew temperature) through subcooler, air touches the rear meeting condensation moisture higher than dew temperature of cooling vessel 17, then the air that will separate out after moisture is heated to O point (being the ventilation state point) by temperature booster 18; Like this, the present invention can satisfy the needs of dehumidifying in car effectively, has guaranteed again the comfort level in car.In addition, demist pattern during present embodiment has been avoided the switching repeatedly of refrigeration and heating mode, in traditional air-conditioning, temperature booster and cooling vessel are same heat exchanger, when demist, need constantly to switch refrigeration and heating mode like this, make heat exchanger core body always be in the thermal shock state, the waste energy, along with the increase of switch mode, be easy to cause the inefficacy of heat exchanger like this.And embodiments of the present invention only need to be controlled three-way solenoid valve and can complete corresponding switching, and the refrigerant that only becomes popular of temperature booster, and cooling vessel is also only walked cold refrigerant, and the complete like this thermal shock of can avoiding is saved the energy.Simultaneously in dehumidifying, the air after again can heating and dehumidification satisfies the comfort level in car.
In embodiments of the present invention, the wind that compartment inner blower 24 blows out is again by temperature booster 18 after first dehumidifying by cooling vessel 17, the last like this wind that blows out just can keep certain temperature and humidity, thereby avoided cold wind directly to blow in the compartment, when having solved in existing air conditioning for automobiles dehumidifying or demist, blowing cold air causes the problem that people's comfort level reduces.In addition, the temperature of the wind that blows out can suitably be regulated by the aperture of controlling the first air door 25, and when needing temperature relatively high, the aperture of the first air door 25 is relatively larger, is conducive to like this to keep the comfort level in the compartment.In addition, the air intake of blower fan 24 comprises new wind and return air, and both ratios are controlled by the second air door 23.
In addition, for electronlmobil, the temperature of environment for use is too low also to exert an influence on battery life and affects travelled distance.When automotive operation snows heavily as in exceedingly odious sky in the relatively low situation of temperature, the heat elements such as its battery need to be worked at normal temperature equally, but peripheral ambient temperature is well below normal operating temperature, like this when beginning to start automobile, just need to carry out pre-warm to elements such as batteries, it is rapidly heated, with service life and the assurance travelled distance that guarantees battery.
particularly, as shown in Figure 4, heat pump of the present invention running condition when battery pre-warm pattern is substantially as follows: the heat pump operation, compressor 10 starts, the interface that three-way solenoid valve 124 leads to the compartment outer heat-exchanger is closed, the interface that leads to dual channel H Exch 16 is opened, other the second three-way solenoid valve 19 is closed, the gaseous coolant of High Temperature High Pressure from compressor out like this, be introduced into temperature booster 18, at this moment the first air door 25 can reach maximum, avoid the wind bypass and without temperature booster, in car after the discharge unit energy, after three-way solenoid valve 124, enter the first flow of dual channel H Exch 16, at this moment can close with the solenoid electric valve 15 of dual channel H Exch 16 bypass, refrigerant all flows to dual channel H Exch 16 like this, at this moment start water pump 22, circulation by the current road, battery 21 is preheated, promote the temperature of battery.Further reduce through the refrigerant temperature after dual channel H Exch 16; Last refrigerant by throttle valve component such as electric expansion valve 14 throttlings after, the refrigerant of the low-temp low-pressure of refrigerant liquefy, and enter compartment outer heat-exchanger 13, and absorb heat outside the compartment, (at this moment start the blower fan of compartment outer heat-exchanger, impel both to carry out interchange of heat), refrigerant becomes gas-liquid two-phase or the superheated vapor refrigerant of low-temp low-pressure like this, through after electromagnetic valve 122, gets back to gas-liquid separator 11, at last, get back to compressor 10; And by compressor work, become again the superheated vapor of High Temperature High Pressure, form a complete circulation.By the time the temperature of battery 21 heat elements such as grade heats up when acquiring a certain degree, and mode of operation can be switched to the heating mode operation.
If guarantee that battery can be rapidly heated, can also once change when above-mentioned battery pre-warm pattern: the first air door 25 is first closed, allow the refrigerant of the High Temperature High Pressure that compressor discharges first not carry out interchange of heat at temperature booster 18, directly 16 pairs of batteries heat up along stream to the dual channel H Exch but allow refrigerant, the intensification of battery is faster like this, but the human comfort in the compartment is weaker possibly, so also can allow frame take advantage of personnel to select voluntarily.
The below introduces the second specific embodiment of the present invention, and Fig. 6 is the pipeline connection diagram of the second specific embodiment of the present invention.present embodiment is a kind of improvement on the first specific embodiment in the above, import and export at the compartment outer heat-exchanger specifically arrange respectively a triplate line spare, three-way solenoid valve, as being that the 3rd three-way solenoid valve 28 is set in the pipeline between compartment outer heat-exchanger 13 and three-way solenoid valve 124 in Fig. 6, compartment outer heat-exchanger 13 export to pipeline between electric expansion valve in a triplate line spare 27 is set, interface of the 3rd three-way solenoid valve 28 and temperature booster 18, the pipeline that vapour liquid separator 11 is come connects, two other interface leads to respectively compartment outer heat-exchanger 13, triplate line spare 27, similarly, two other interface of triplate line spare 27 connects respectively compartment outer heat-exchanger 13, electric expansion valve 14, like this, namely increased the bypass flow path of a compartment outer heat-exchanger 13 as the 3rd bypass flow path of heat pump, when system is demist pattern and heating mode, can not need to use compartment outer heat-exchanger 13, at this moment, the 3rd three-way solenoid valve 28 leads to the interface unlatching of pipeline fitting 27, and the interface that leads to the compartment outer heat-exchanger can be closed, refrigerant can directly pass through from the 3rd bypass flow path, can form complete heat pump equally like this, and avoided the waste of the energy, improved the Energy Efficiency Ratio of heat pump.When also can being heating mode, this 3rd bypass flow path carries out bypass.
In addition, in the 3rd bypass flow path, the setting position of three-way solenoid valve also can be adjusted, in pipeline between compartment outer heat-exchanger 13 and temperature booster 18, vapour liquid separator 11, a triplate line spare is set, and a three-way solenoid valve, the same like this object of the invention that can realize are set in the pipeline between compartment outer heat-exchanger 13 and electric expansion valve 14; Three-way solenoid valve can also substitute with two general electromagnetic valves in addition, as before electromagnetic valve being arranged on respectively compartment outer heat-exchanger 13 or in the 3rd bypass flow path etc.
The above is only preferred embodiment of the present invention, is not the present invention is done any pro forma restriction.Although the present invention discloses as above with preferred embodiment, yet is not to limit the present invention.Any those of ordinary skill in the art, do not breaking away from technical solution of the present invention scope situation, all can utilize method and the technology contents of above-mentioned announcement to make many possible changes and modification to technical solution of the present invention, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solution of the present invention, all still belongs in the scope of technical solution of the present invention protection any simple modification made for any of the above embodiments, equivalent variations and modification according to technical spirit of the present invention.
Claims (10)
1. automotive air-conditioning system, comprise heat generating components temperature control loop and the heat pump with refrigerant circulation circuit, wherein refrigerant circulation circuit and heat generating components temperature control loop carry out interchange of heat by the dual channel H Exch, the first flow of described dual channel H Exch is communicated with refrigerant circulation circuit, and the second runner of dual channel H Exch is communicated with the heat generating components temperature control loop;
Described automotive air-conditioning system has: refrigeration mode, heating mode, demist pattern, battery pre-warm pattern be totally four kinds of mode of operations;
Described heat pump comprises compressor, be positioned at vapour liquid separator, the temperature booster that heat is provided to the compartment that arranges respectively before compressor inlet and provide to the compartment cold cooling vessel, be positioned at the compartment outer heat-exchanger compartment outside, reach orifice union; Described temperature booster and cooling vessel carry out heat supply, cooling or demist for described compartment according to the operating mode demand in the compartment; Described temperature booster and compartment outer heat-exchanger can select to carry out interchange of heat; The refrigerant that the described temperature booster of described heat pump only becomes popular, and described cooling vessel is only walked cold refrigerant, to avoid thermal shock;
Refrigerant first leads to described temperature booster from compressor after out, also be provided with three-way solenoid valve on the pipeline of described heater outlet, an interface of three-way solenoid valve directly or indirectly leads to the compartment outer heat-exchanger, and the another one interface directly or indirectly leads to the first flow of dual channel H Exch.
2. automotive air-conditioning system according to claim 1, it is characterized in that, in the refrigerant circulation circuit of described heat pump, first flow for described dual channel H Exch is provided with second bypass flow path, be provided with the first flow of solenoid electric valve or described dual channel H Exch and the junction of described the second bypass flow path and be provided with solenoid electric valve on described the second bypass flow path, to control the flow by the refrigerant of dual channel H Exch first flow, further guarantee the temperature controlled requirement for heat element.
3. automotive air-conditioning system according to claim 1 and 2, it is characterized in that, in the refrigerant circulation circuit of described heat pump, be provided with the bypass passageways of a refrigerant for the described cooling vessel that cold is provided in the compartment, the conducting when heat pump operation heating mode or battery pre-warm pattern of described bypass passageways.
4. automotive air-conditioning system according to claim 3, it is characterized in that, the refrigerant circulation circuit of described heat pump comprises the second three-way solenoid valve, the second three-way solenoid valve is arranged in pipeline between cooling vessel and dual channel H Exch, and it can optionally control the conducting of the described bypass passageways of the stream that leads to described cooling vessel or described cooling vessel.
5. automotive air-conditioning system according to claim 1 and 2, is characterized in that, described dual channel H Exch is plate type heat exchanger.
6. automotive air-conditioning system according to claim 5, is characterized in that, the capacity of the storage space of the refrigerant liquid in described vapour liquid separator is the 20-40 % of described heat pump coolant injection amount.
7. automotive air-conditioning system according to claim 5, is characterized in that, electric expansion valve or the heating power expansion valve of described orifice union for two-way circulating and carrying out throttling.
8. according to the described automotive air-conditioning system of top arbitrary claim, it is characterized in that, described automotive air-conditioning system also comprises the blower fan of blowing in the compartment, when described heat pump is in the demist pattern, the wind that described blower fan is sent is first to dehumidify by described cooling vessel, then by being sent to after temperature booster in the compartment; Described temperature booster can heat or not heat optionally for the wind after dehumidifying according to the operating mode in the compartment, to guarantee the comfort level in the compartment.
9. automotive air-conditioning system according to claim 8, it is characterized in that, ventilation inlet at described temperature booster is provided with the first air door, and the first air door can step-less adjustment, thereby the adjusting by described the first air door realizes the control and regulation of the ratio of the air quantity by temperature booster;
With or described automotive air-conditioning system also be provided with ptc heater in described compartment, when heating mode by the described ptc heater of open and close optionally controlling the temperature in the compartment, and the wind in the described compartment is first by temperature booster, blow by described ptc heater and then in the compartment again.
10. automotive air-conditioning system according to claim 8, it is characterized in that, the refrigerant circulation circuit of described heat pump also comprises the 3rd bypass flow path of a bypass described compartment outer heat-exchanger, when system is demist pattern and heating mode, described the 3rd bypass flow path of conducting optionally.
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