CN206734008U - Air conditioning system - Google Patents
Air conditioning system Download PDFInfo
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- CN206734008U CN206734008U CN201720589027.8U CN201720589027U CN206734008U CN 206734008 U CN206734008 U CN 206734008U CN 201720589027 U CN201720589027 U CN 201720589027U CN 206734008 U CN206734008 U CN 206734008U
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- conditioning system
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 56
- 239000007788 liquid Substances 0.000 claims abstract description 76
- 239000003507 refrigerant Substances 0.000 claims abstract description 61
- 238000002347 injection Methods 0.000 claims abstract description 23
- 239000007924 injection Substances 0.000 claims abstract description 23
- 230000008676 import Effects 0.000 claims description 23
- 239000012530 fluid Substances 0.000 claims description 10
- 238000005057 refrigeration Methods 0.000 abstract description 25
- 238000001704 evaporation Methods 0.000 abstract description 17
- 230000008020 evaporation Effects 0.000 abstract description 17
- 238000000926 separation method Methods 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 description 48
- 230000000694 effects Effects 0.000 description 21
- 230000009471 action Effects 0.000 description 14
- 230000005611 electricity Effects 0.000 description 13
- 238000005507 spraying Methods 0.000 description 11
- 239000002826 coolant Substances 0.000 description 8
- 238000009434 installation Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 230000006872 improvement Effects 0.000 description 5
- 238000004781 supercooling Methods 0.000 description 5
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 238000007710 freezing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 238000007726 management method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000000476 thermogenic effect Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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- Air-Conditioning For Vehicles (AREA)
Abstract
The utility model provides an air conditioning system, including compressor (1), outdoor heat exchanger (2), indoor heat exchanger (3), and outdoor heat exchanger (2) with still be provided with sprayer (4) between indoor heat exchanger (3), and sprayer (4) with still be provided with vapour and liquid separator (5) between indoor heat exchanger (3), liquid outlet (53) of vapour and liquid separator (5) link to indoor heat exchanger (3). The utility model discloses carry out gas-liquid separation in the refrigerant injection entering gas-liquid separator that erupts the sprayer to make the gas that separates get into compressor, liquid and get into indoor heat exchanger, reduce the quality of the refrigerant that gets into in the evaporimeter effectively, improved evaporation heat exchange efficiency effectively, improved refrigeration capacity and refrigeration efficiency under the especially high temperature environment.
Description
Technical field
The utility model belongs to air-conditioning technical field, and in particular to a kind of air-conditioning system.
Background technology
The interior space of pure electric vehicle is limited at present, it is desirable to air conditioner structure is compact, and the performance of air-conditioning directly affect it is electronic
Car distance travelled；Therefore, the efficiency for improving air-conditioning is significant to electric car distance travelled.With the environmental law of automobile-used refrigerant
Rule requirement, R744 (i.e. CO2) refrigerant is high with its operating pressure, exothermic temperature is high, non-combustible, low-temperature heating performance is excellent, it is low into
This, the advantages such as chemical property is stable are listed in the important alternative refrigerant of future automobile air-conditioning.
CO2Working medium need to carry out trans critical cycle because critical-temperature is relatively low when environment temperature is higher than 30 DEG C of refrigeration, with
Environment temperature raises, and refrigeration performance decay is serious.This is also CO2Air conditioning for automobiles is difficult to one of key reason of popularization and application.Separately
On the one hand, electric automobile is both needed to 0 or less than -5 DEG C by electric auxiliary hot heating at present, and the auxiliary heat of electricity heats efficiency less than 1, and
It can also decline in 0 or less than -5 DEG C batteries power supplying efficiency in itself, so as to cause to continue a journey compared with electric automobile under low ambient temperature
Ability declines to a great extent.The efficiency of low-temperature heat supply is low, has leveraged the distance travelled of electric automobile at low ambient temperatures.
Because the technical problems such as cooling and warming inferior capabilities, therefore the utility model be present in electric automobile of the prior art
Research and design goes out a kind of air-conditioning system.
Utility model content
Therefore, the technical problems to be solved in the utility model is to overcome automotive air-conditioning system of the prior art ring to be present
The defects of refrigerating capacity is low when border temperature is higher, so as to provide a kind of air-conditioning system.
The utility model provides a kind of air-conditioning system, and it includes compressor, outdoor heat exchanger, indoor heat exchanger, and
Injector is additionally provided between the outdoor heat exchanger and the indoor heat exchanger, and is changed in the injector and the interior
Gas-liquid separator is additionally provided between hot device, the liquid outlet of the gas-liquid separator is connected to the indoor heat exchanger.
Preferably, the injector includes main import, injection import and jet exit, and the main import is changed with the outdoor
Hot device is connected, and the injection import is connected to the indoor heat exchanger, and the jet exit is connected to the gas-liquid separator.
Preferably, the gas-liquid separator also includes fluid inlet, and the fluid inlet is ejected by pipeline with described
Mouth is connected.
Preferably, the air-conditioning system is automotive air-conditioning system, and the refrigerant of air-conditioning system is CO2。
Preferably, it is additionally provided with battery heat exchanger in parallel with the indoor heat exchanger both ends, and in battery heat
The 5th magnetic valve is additionally provided with pipeline where exchanger.
Preferably, be additionally provided with subcooler in the suction line of the compressor, the outdoor heat exchanger with it is described
Intermediate duct between injector passes through the subcooler so that the suction line is with the intermediate duct in the supercooling
But exchanged heat in device.
Preferably, the first expansion valve is additionally provided between the injector and the subcooler, in the supercooling
The second expansion valve is additionally provided between device and the outdoor heat exchanger, and list is additionally provided with parallel on second expansion valve
To valve.
Preferably, when including injection import, the indoor heat exchanger is communicated to the injection import by connecting pipeline,
Second solenoid valve is additionally provided with the connecting pipeline.
Preferably, branch is gone back on the connecting pipeline, between the second solenoid valve and the indoor heat exchanger
Ground is provided with branch line, and the branch line is connected on the pipeline between first expansion valve and the subcooler, and
The 3rd magnetic valve is additionally provided with the branch line.
Preferably, in addition to four-way valve, four connection ends of the four-way valve are respectively connecting to the gas-liquid separator
The liquid outlet, the indoor heat exchanger, the exhaust end of the outdoor heat exchanger and the compressor.
Preferably, the 3rd expansion valve is additionally provided with the pipeline between the four-way valve and the indoor heat exchanger, and
The 4th magnetic valve is also provided with parallel on the 3rd expansion valve.
Preferably, in addition to triple valve, three connection ends of the triple valve are respectively connecting to the gas-liquid separator
The exhaust end of the liquid outlet, the outdoor heat exchanger and the compressor；
And the 6th magnetic valve is additionally provided between the gas-liquid separator and the triple valve, in the gas-liquid separation
The second branch road branch also is provided between device and the 6th magnetic valve, second branch road is connected to the outdoor heat exchange
Device, and it is provided with the 7th magnetic valve on second branch road.
Preferably, the 3rd expansion valve is additionally provided with the pipeline between the triple valve and the indoor heat exchanger, and
The 4th magnetic valve is also provided with parallel on the 3rd expansion valve.
A kind of air-conditioning system provided by the utility model has the advantages that：
1. air-conditioning system of the present utility model, by setting injector to carry out ejector action to refrigerant, form injection
Circulation, its speed and pressure are improved, and enter gas-liquid separation with reference to gas-liquid separator, the coolant injection for ejecting injector
Gas-liquid separation is carried out in device, and the gas for making to isolate enters compressor, liquid gets in heat exchanger, can effectively reduce
Into the mass dryness fraction of the refrigerant in evaporator so that the refrigerant as far as possible for liquid, which enters in evaporator, to be evaporated, so as to effectively
Ground improves evaporation and heat-exchange efficiency, improves refrigerating capacity and refrigerating efficiency under especially hot environment；
2. air-conditioning system of the present utility model, by setting injector to carry out ejector action to refrigerant, improve its speed
Degree and pressure, additionally it is possible to the restriction loss of system is effectively reduced, improves the pressure of inspiration(Pi) entered in compressor, reduces pressure ratio,
The power consumption of compressor is reduced, is effectively improved the efficiency of system；
3. air-conditioning system of the present utility model, as a result of the CO of natural environmental-protective2As refrigerant, can meet from pole
Low temperature such as -30 DEG C of uses for arriving such as 45 DEG C environment of high temperature, system possess good low-temperature heating performance, it is no longer necessary to which installation electricity is auxiliary
Heat carries out auxiliary heat supplying, while meets automobile air-conditioning refrigeration and functional requirement, improves security while saves cost and sky
Between；
4. air-conditioning system of the present utility model, the system realizes the switching of refrigeration and heating using four-way valve or triple valve,
Can meet the needs of pure electric automobile is to freezing and heating simultaneously；And can meet from extremely low temperature such as -30 DEG C use ring
Border, and no longer need the auxiliary heat of installation electricity to carry out auxiliary heat supplying；
5. air-conditioning system of the present utility model, the system has taken into account the heat management of battery, can effectively control battery pack
Temperature, improve battery efficiency.Solve the problems, such as that battery efficiency is low under extreme ambient temperature, improve the use of electric automobile
Temperature range and the endurance under extreme climate environment.
Brief description of the drawings
Fig. 1 is the spraying cycle heat pump refrigerating operaton figure of the present utility model using four-way valve；
Fig. 2 is the spraying cycle heat pump heating operation figure of the present utility model using four-way valve；
Fig. 3 is the spraying cycle heat pump refrigerating operaton figure of the present utility model using triple valve；
Fig. 4 is the spraying cycle heat pump refrigerating operaton figure of the present utility model using triple valve；
Fig. 5 is the structural representation of injector of the present utility model；
Fig. 6 is refrigerating operaton pressure-enthalpy chart of the present utility model；
Fig. 7 is heating operation pressure-enthalpy chart of the present utility model.
Reference is expressed as in figure：
1st, compressor；2nd, outdoor heat exchanger；3rd, indoor heat exchanger；4th, injector；41st, main import；42nd, injection import；
43rd, jet exit；5th, gas-liquid separator；51st, fluid inlet；52nd, gas vent；53rd, liquid outlet；6th, battery heat exchanger；
7th, the 5th magnetic valve；8th, four-way valve；9th, subcooler；10th, suction line；11st, intermediate duct；12nd, the first expansion valve；13rd,
Two expansion valves；14th, check valve；15th, the 3rd expansion valve；16th, the 4th magnetic valve；17th, connecting pipeline；18th, second solenoid valve；19、
Branch line；20th, the 3rd magnetic valve；21st, triple valve；22nd, the 6th magnetic valve；23rd, the second branch road；24th, the 7th magnetic valve；25、
First magnetic valve；G, driving nozzle exports；H, mixing section exports；I, diffuser exports.
Embodiment
Explanation：Dotted line represents short circuit in circuit in figure, i.e., refrigerant is not by if magnetic valve filled black, representing the electricity
Magnet valve is closed, and is filled if white, then it represents that the magnetic valve is opened.
Embodiment 1
As shown in figs. 1-7, the utility model provides a kind of air-conditioning system, and it includes compressor 1, outdoor heat exchanger 2, interior
Heat exchanger 3, and injector 4 is additionally provided between the outdoor heat exchanger 2 and the indoor heat exchanger 3, and described
Gas-liquid separator 5 is additionally provided between injector 4 and the indoor heat exchanger 3, the liquid outlet 53 of the gas-liquid separator 5 connects
To one end of the indoor heat exchanger 3.The gas vent 52 of gas-liquid separator 5 of the present invention is connected to the suction of the compressor 1
Gas port end, with to entering the refrigerant progress gas liquid separating function in compressor, preventing that liquid coolant from entering in compressor and causes
Liquid hammer.
By setting injector to carry out ejector action to refrigerant, spraying cycle is formed, improves its speed and pressure, and
And combine gas-liquid separator, the coolant injection that ejects injector enters in gas-liquid separator and carries out gas-liquid separation, and make point
The gas separated out enters compressor, liquid gets in heat exchanger, can effectively reduce into the dry of the refrigerant in evaporator
Degree so that the refrigerant as far as possible for liquid, which enters in evaporator, to be evaporated, and so as to be effectively improved evaporation and heat-exchange efficiency, is carried
The refrigerating capacity and refrigerating efficiency of high system when especially environment temperature is higher；
By setting injector to carry out ejector action to refrigerant, its speed and pressure are improved, additionally it is possible to effectively drop
The restriction loss of low system, the pressure of inspiration(Pi) entered in compressor is improved, reduce pressure ratio, reduce the power consumption of compressor, effectively
Improve the efficiency of system.
As shown in Figure 5, it is preferable that the injector 4 includes main import 41, injection import 42 and jet exit 43, described
Main import 41 is connected with the outdoor heat exchanger 2, and the injection import 42 is connected to the other end of the indoor heat exchanger 3, described
Jet exit 43 is connected to the gas-liquid separator 5.This is the preferred structure and connected mode of injector of the present utility model, is passed through
By the injection import in injector be connected to indoor heat exchanger, can from the higher refrigerant of indoor heat exchanger pipeline section injection enthalpy, from
And improve main import refrigerant enthalpy, except also by injector diffuser improve refrigerant pressure, so as to be effectively improved
Refrigerant pressure, reduce restriction loss, reduce pressure ratio, improve system energy efficiency.
Preferably, the gas-liquid separator 5 includes fluid inlet 51, the gas vent 52 and the liquid outlet 53,
The fluid inlet 51 is connected by pipeline with the jet exit 43；The gas vent 52 is connected to the suction of the compressor 1
Gas port end, the liquid outlet 53 are connected to the indoor heat exchanger 3.This is the preferred structure of gas-liquid separator of the present utility model
Form and connected mode, fluid inlet is connected into the jet exit of injector, and effectively can to obtain pressure from jet exit higher
Refrigerant, will separate the liquid refrigerants that draws and be directed into indoor heat exchanger can effectively reduce the mass dryness fraction of refrigerant so as to the greatest extent may be used
Heat absorption can be evaporated for the refrigerant of liquid state, improves evaporation and heat-exchange efficiency, improve refrigerating efficiency, while will isolated
Gaseous coolant be directed into compressor air entry end enable to the larger refrigerant of mass dryness fraction enter compressor in be compressed, so as to
It efficiently avoid compressor and the phenomenon of liquid hammer occur, ensure that the performance of compressor and air-conditioning system.
Preferably, the air-conditioning system is automotive air-conditioning system, and the refrigerant of air-conditioning system is CO2.As a result of day
So CO of environmental protection2As refrigerant, it can meet possess from such as -30 DEG C of uses to such as 45 DEG C environment of high temperature of extremely low temperature, system
Good low-temperature heating performance, it is no longer necessary to which the auxiliary heat of installation electricity carries out auxiliary heat supplying, while meets automobile air-conditioning refrigeration and function
Demand, improve security while save cost and space.
Preferably, battery heat exchanger 6 is additionally provided with parallel with the both ends of indoor heat exchanger 3, and in the battery
The 5th magnetic valve 7 is additionally provided with pipeline where heat exchanger 6.By the way that battery heat exchange is arranged in parallel on heat exchanger indoors
The frame mode of device, heat exchange action can also effectively be carried out to battery, can effectively control the temperature of battery pack, improve electricity
Pond power consumption efficiency.Solve the problems, such as that battery efficiency is low under extreme ambient temperature, improve electric automobile use temperature range and
Endurance under extreme climate environment, battery can be carried out according to being actually needed by way of the 5th magnetic valve is set
Heat exchange effect, to be heated up or be cooled to it.
Preferably, be additionally provided with subcooler 9 in the suction line 10 of the compressor 1, the outdoor heat exchanger 2 with
Intermediate duct 11 between the injector 4 passes through the subcooler 9 so that the suction line 10 and the intermediate duct
11 are exchanged heat in the subcooler 9.By the setting of subcooler, enable to after being exchanged heat through outdoor heat exchanger
Refrigerant carries out the effect of further condensation heat release so that the temperature of refrigerant is further reduced, to reach supercooling as far as possible
State, so as to ensure that the refrigerant entered in evaporator is liquid as much as possible, so as to for further raising evaporation and heat-exchange efficiency, carry
High refrigerating efficiency provides condition；Also effectively ensure that the refrigerant into compressor inlet carries out further evaporation and inhaled simultaneously
Heat effect so that the refrigerant at this reaches the state of overheat as much as possible, so as to effectively ensure the refrigerant entered in compressor
For gaseous state, so as to effectively prevent liquid hammer, the security performance of compressor or even air-conditioning system is improved.
Preferably, it (is preferably electricity that the first expansion valve 12 is additionally provided between the injector 4 and the subcooler 9
Sub- expansion valve), it (is preferably electronics that the second expansion valve 13 is additionally provided between the subcooler 9 and the outdoor heat exchanger 2
Expansion valve), and on second expansion valve 13 be additionally provided with check valve 14 in parallel (check valve only allows fluid to be changed from outdoor
Hot device flows to subcooler)., can be to by condensation heat release and supercooling by setting the structure of the first expansion valve in above-mentioned position
Refrigerant after condensation heat release carries out throttling expansion and adjusts the effect of flow, so as to reduce the pressure of refrigerant so that evaporation is made
With by setting the second expansion valve can be to carrying out throttling expansion before entering outdoor heat exchanger from subcooler in above-mentioned position
Effect, for entering in outdoor heat exchanger be evaporated while heating (system), while by the second expansion valve and receipts or other documents in duplicate
To valve and make it that only allowing fluid to flow to subcooler from outdoor heat exchanger enables to system in refrigeration from outdoor heat exchange
The throttling action of expansion valve is needed not move through after device condensation, enters back into subcooler, and preventing subcooler can not normally exchange heat
Have the function that supercooling so that switching that can normally, safe between cooling system and heating.
Preferably, when including injection import 42, the indoor heat exchanger 3 is communicated to the injection by connecting pipeline 17
Import 42, second solenoid valve 18 is additionally provided with the connecting pipeline 17.Indoor heat exchanger is so enabled to pass through connection
Pipeline is connected to the injection import of injector, to complete ejector action, while can be to the injection branch road by second solenoid valve
Effectively controlled.
Preferably, on the connecting pipeline 17, between the second solenoid valve 18 and the indoor heat exchanger 3 also
Branch line 19 is provided with to branch, the branch line 19 is connected between first expansion valve 12 and the subcooler 9
Pipeline on, and be additionally provided with the 3rd magnetic valve 20 on the branch line 19.By setting branch line in above-mentioned position
Indoor heat exchanger is enabled to directly to be connected without injector with subcooler, such case is applied to system and transported in heating
During row, due to CO2The heating performance of refrigerant is preferable, can still provide for normally heating under low temperature and ultra low temperature state, because
This air-conditioning system can not have to carry out jet-action using injector in heating operation, still ensure that its normal heating property
Can, good control action is realized, improves the refrigeration performance and heating performance of system.
Embodiment 2
The present embodiment is the further improvement made on the basis of embodiment 1, it is preferable that also including four-way valve 8, institute
Four connection ends for stating four-way valve 8 are respectively connecting to the liquid outlet 53 of the gas-liquid separator 5, the indoor heat exchanger
3rd, the exhaust end of the outdoor heat exchanger 2 and the compressor 1.The system realizes the switching of refrigeration and heating using four-way valve,
Can meet the needs of pure electric automobile is to freezing and heating simultaneously；And can meet from extremely low temperature such as -30 DEG C of use environment,
And the auxiliary heat of installation electricity is no longer needed to carry out auxiliary heat supplying.
Preferably, it is additionally provided with the 3rd expansion valve 15 on the pipeline between the four-way valve 8 and the indoor heat exchanger 3
(being preferably electric expansion valve), and the 4th magnetic valve 16 is also provided with parallel on the 3rd expansion valve 15.By in room
The position of the interior above-mentioned upstream of heat exchanger sets the structure type of above-mentioned expansion valve and above-mentioned magnetic valve in parallel, can be in system system
The 4th magnetic valve is closed during cold operation so that refrigerant flows through from the 3rd expansion valve, so as to complete the effect of throttling expansion, makes
Bigger evaporation endothermic enthalpy difference can be obtained, obtain more preferable evaporation and heat-exchange effect by obtaining when refrigerant gets in evaporation in heat exchanger
Fruit, the 4th magnetic valve is opened in heating operation so that the effect that refrigerant need not carry out throttling expansion just can obtain preferably
Heating effect, so as to realize that the demand according to actual conditions carries out integrating effective control action.
Embodiment 3
The present embodiment is the further improvement made on the basis of embodiment 1, and is implemented for the replacement of embodiment 2
Example, it is preferable that be also respectively connecting to the gas-liquid separator 5 including triple valve 21, three connection ends of the triple valve 21
The exhaust end of the liquid outlet 53, the outdoor heat exchanger 2 and the compressor 1；
And the 6th magnetic valve 22 is additionally provided between the gas-liquid separator 5 and the triple valve 21, in the gas
The second branch road 23 branch also is provided between liquid/gas separator 5 and the 6th magnetic valve 22, second branch road 23 is connected to
The outdoor heat exchanger 2, and it is provided with the 7th magnetic valve 24 on second branch road 23.
The system realizes the switching of refrigeration and heating using triple valve, is effective substitute mode to the structure of four-way valve,
Can also meet the needs of pure electric automobile is to freezing and heating simultaneously；And can meet from extremely low temperature such as -30 DEG C use ring
Border, and no longer need the auxiliary heat of installation electricity to carry out auxiliary heat supplying.
Preferably, it is additionally provided with the 3rd expansion valve on the pipeline between the triple valve 21 and the indoor heat exchanger 3
15 (preferably electric expansion valves), and the 4th magnetic valve 16 is also provided with parallel on the 3rd expansion valve 15.By in room
The position of the interior above-mentioned upstream of heat exchanger sets the structure type of above-mentioned expansion valve and above-mentioned magnetic valve in parallel, can be in system system
The 4th magnetic valve is closed during cold operation so that refrigerant flows through from the 3rd expansion valve, so as to complete the effect of throttling expansion, makes
Bigger evaporation endothermic enthalpy difference can be obtained, obtain more preferable evaporation and heat-exchange effect by obtaining when refrigerant gets in evaporation in heat exchanger
Fruit, the 4th magnetic valve is opened in heating operation so that the effect that refrigerant need not carry out throttling expansion just can obtain preferably
Heating effect, so as to realize that the demand according to actual conditions carries out integrating effective control action.
Embodiment 4
The utility model also provides a kind of control method of air-conditioning system, and it uses foregoing air-conditioning system, and it is carried out
The control of spraying cycle.The utility model forms spraying cycle, carried by setting injector to carry out ejector action to refrigerant
High its speed and pressure, and enter in gas-liquid separator with reference to gas-liquid separator, the coolant injection for ejecting injector
Row gas-liquid separation, and the gas for making to isolate enters compressor, liquid gets in heat exchanger, can effectively reduce into steaming
Send out the mass dryness fraction of the refrigerant in device so that the refrigerant as far as possible for liquid, which enters in evaporator, to be evaporated, so as to effectively improve
Evaporation and heat-exchange efficiency, improves refrigerating capacity and refrigerating efficiency；
The utility model also by setting injector to carry out ejector action to refrigerant, improves its speed and pressure, also
The restriction loss of system can be effectively reduced, improves the pressure of inspiration(Pi) entered in compressor, reduces pressure ratio, reduces compressor
Power consumption, it is effectively improved the efficiency of system.
Preferably, when including the 3rd expansion valve 15 and during four magnetic valves 16, when cooling system is run, described the is closed
Four magnetic valves 16, in system heating operation, open the 4th magnetic valve 16.Due to air-conditioning system especially CO2Air-conditioning system
The heating performance of system is better than refrigeration performance, (such as higher than 30 DEG C) its progress trans critical cycle, system when environment temperature is higher
Cold poor-performing, therefore above-mentioned control device of the present utility model to close the 4th magnetic valve when cooling system is run,
So that refrigerant is flowed through from the 3rd expansion valve, so as to complete the effect of throttling expansion so that refrigerant, which is got in heat exchanger, to be steamed
Bigger evaporation endothermic enthalpy difference can be obtained during hair, obtains more preferable evaporation and heat-exchange effect, the 4th electricity is opened in heating operation
Magnet valve so that the effect that refrigerant need not carry out throttling expansion just can obtain preferable heating effect (CO during heating2Air-conditioning system
Possess good heating performance), so as to realize that the demand according to actual conditions carries out integrating effective control action.
Preferably, when including five magnetic valve 7, and when system is (including in the four-way valve system and Fig. 4 in Fig. 2
Three-way valve systems) refrigerating operaton and when detecting battery pack temperature more than a DEG C, the 5th magnetic valve 7 is opened, to electricity
Pond group is cooled down；When detecting that battery pack temperature is less than a DEG C, the 5th magnetic valve 7 is closed, is not required to carry out battery pack
Cooling, wherein a span is 30<a<60.Because the 5th magnetic valve is provided in the pipeline being connected with battery heat exchanger
On, the electromagnetism is opened during refrigeration preset temperature when above-mentioned control device enables to the battery pack temperature to exceed refrigerating operaton
Valve carries out refrigeration cool-down effect to it, prevents that its temperature is too high；It is also possible that when battery pack temperature is less than refrigeration preset temperature
Close the magnetic valve and refrigeration cool-down effect is not carried out to battery pack, so as to effectively by the temperature control of battery pack above-mentioned default
Below a DEG C of temperature, realize and the effective refrigeration control of battery pack is acted on.
Preferably, when system (including three-way valve systems in the four-way valve system and Fig. 4 in Fig. 2) heating operation and inspection
When measuring battery pack temperature less than b DEG C, the 5th magnetic valve 7 is opened, battery pack is heated；When detecting battery pack temperature
When degree is higher than b DEG C, the 5th magnetic valve 7 is closed, is not required to heat battery pack, wherein b span is -5<b<-
25.Because the 5th magnetic valve is provided on the pipeline being connected with battery heat exchanger, above-mentioned control device enables to
The magnetic valve is opened during heating preset temperature when battery pack temperature is less than heating operation to carry out it heating thermogenic action, prevent
Its temperature is too high；It is also possible that the magnetic valve is closed not to battery pack system when battery pack temperature is higher than heating preset temperature
Hot thermogenic action, so as to which effectively by the temperature control of battery pack in more than b DEG C of above-mentioned preset temperature, realize has to battery pack
The heating control action of effect.
This heat pump uses spraying cycle, and restriction loss is greatly reduced while can lift high-temperature refrigeration ability and energy
Effect；The refrigeration performance under higher than 30 DEG C environment is improved, saves air conditioner refrigerating energy consumption, while improve under summer high temperature environment
In-car comfortableness；Solve the problems, such as that battery efficiency is low under extreme ambient temperature, improve the use temperature range of electric automobile
And the endurance under extreme climate environment.The energy consumption of air-conditioning is also effectively saved, is contributed in the traveling of lifting automobile
Journey；
The system uses the CO of natural environmental-protective2As refrigerant, and meet automobile air-conditioning refrigeration and functional requirement simultaneously；Can
To meet from such as -30 DEG C of uses to such as 45 DEG C environment of high temperature of extremely low temperature, due to using CO2As refrigerant, system possesses good
Good low-temperature heating performance, it is no longer necessary to the auxiliary heat of installation electricity carries out auxiliary heat supplying, improve security at the same save cost with
Space；
The system realizes the switching of refrigeration and heating using four-way valve or triple valve, can meet pure electric automobile pair simultaneously
Refrigeration and the demand of heating；And can meet from extremely low temperature such as -30 DEG C of use environment, and no longer need the auxiliary heat of installation electricity to carry out
Auxiliary heat supplying；The system can use four-way valve or triple valve to realize the switching of refrigeration and heating, and pure electric automobile can be met to system
Cold and heating demand；
The system has taken into account the heat management of battery, can effectively control the temperature of battery pack, improves battery efficiency.Increase
Add the cold and hot management to battery of electric vehicle group, improve the use temperature range of electric automobile and the continuation of the journey under extreme climate environment
Ability.
The utility model is further described below in conjunction with the accompanying drawings.
Refrigerating operaton：
Use spraying cycle during refrigerating operaton, the gaseous coolant of low-temp low-pressure reaches a high temperature high pressure after compressor compresses
State, then by four-way valve 8 (as shown in Figure 1-2) or triple valve 21 (as shown in Figure 3-4, now the 6th magnetic valve 22 is opened,
7th magnetic valve 24 is closed) cooled down into outdoor heat exchanger, then carry out hot friendship into subcooler 9 through check valve 14
Change, enter injector through the first magnetic valve 25 after then being throttled by the first expansion valve 12, it is laggard with the refrigerant mixing diffusion of injection
Enter gas-liquid separator 5, a part of gaseous coolant is inhaled into compressor 1, another portion after the heat exchange of subcooler 9 in gas-liquid separator
Point liquid refrigerants (fourth magnetic valve 16 in parallel with the 3rd expansion valve 15 or is adopted after the throttling of the 3rd expansion valve 15 during refrigeration
It is closed mode with the 4th magnetic valve 16 in three-way valve systems) heat exchanger 3 and battery heat exchanger 6 are got in, all the way
Liquid refrigerants through indoor heat exchanger 3 is evaporated into gaseous state, all the way into battery heat exchanger 6, using the 5th magnetic valve 7 to entering
The refrigerant for entering battery heat exchanger is controlled, and the 5th on battery pack pipeline is then opened when detecting that battery pack needs and cooled
Magnetic valve 7, is otherwise closed.Converge after the refrigerant in indoor heat exchanger 3 and battery heat exchanger 6 is by evaporation completely, then pass through
Second solenoid valve 18 enters injector 4, so completes spraying cycle.
During refrigerating operaton, fourth magnetic valve 16 in parallel with the 3rd expansion valve 15 or electric using the 4th in three-way valve systems
Magnet valve 16 is constantly in closed mode.
When detecting battery pack temperature more than a DEG C, a span is 30<a<60, the 5th magnetic valve 7 is opened, right
Battery pack is cooled down；When detecting that battery pack temperature is less than a DEG C, it is 0 that the 5th magnetic valve 7, which is closed, is not required to enter battery pack
Row cooling.Air-conditioning system operation energy consumption is saved, while ensure that battery pack operational efficiency.
Heating operation：
Based on CO2With good heating performance, delivery temperature is higher, and injector has directionality.To simplify system
Structure, spraying cycle is not used in heating operation, and use conventional single stage compression kind of refrigeration cycle mode.
The gaseous coolant of low-temp low-pressure reaches a high temperature the state of high pressure after the compression of compressor 1, then by four-way valve 8
After (as shown in Figure 2) or triple valve 21 (as shown in figure 4, now the 6th magnetic valve 22 is closed, the 7th magnetic valve 24 is opened), and
The 4th magnetic valve 16 by the 3rd expansion valve 15 and opening connected in parallel is (or using the opening state in three-way valve systems
4th magnetic valve 16 of state) after, get in heat exchanger and carry out to in-car heating, equally using magnetic valve to entering battery heat
The refrigerant of exchanger is controlled, i.e., according to the actual temperature of battery pack, be selectively turned on and off the 5th magnetic valve 7 (or
The 5th magnetic valve 7 in three-way valve systems) battery is heated or not heated so as to realize.
When detecting that battery pack temperature is less than b DEG C, b span is -5<b<The system of four-way valve is used in -25, Fig. 2
5th magnetic valve 7 (or the 5th magnetic valve 7 in three-way valve systems) of hot runtime is opened, and battery pack is heated；When
When detecting that battery pack temperature is higher than b DEG C, in Fig. 2 using four-way valve heating operation system the 5th magnetic valve 7 (or triple valve
The 5th magnetic valve 7 in system) close, it is not required to heat battery pack.Air-conditioning system operation energy consumption is saved, ensure that simultaneously
Battery pack operational efficiency.
During heating operation, fourth magnetic valve 16 in parallel with the 3rd expansion valve 15 or electric using the 4th in three-way valve systems
Magnet valve 16 is constantly in opening.
High-pressure liquid is cooled into by the refrigerant of indoor heat exchanger 3 and battery heat exchanger 6, by the 3rd magnetic valve 20
The refrigerant exported into subcooler 9 and gas-liquid separator 5 carries out heat exchange, then after the throttling of the second expansion valve 13, leads to
Cross four-way valve 8 or triple valve 21 enters gas-liquid separator 5, pressure is inhaled into after the heat exchange of subcooler 9 after carrying out gas-liquid separation
In contracting machine 1, heating circulation is so completed.
For those skilled in the art it is easily understood that on the premise of not conflicting, above-mentioned each advantageous manner can be free
Ground combination, superposition.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.Described above is only preferred embodiment of the present utility model, it is noted that for the art
For those of ordinary skill, on the premise of the utility model technical principle is not departed from, some improvement and modification can also be made,
These improvement and modification also should be regarded as the scope of protection of the utility model.
Claims (13)
- A kind of 1. air-conditioning system, it is characterised in that：Including compressor (1), outdoor heat exchanger (2), indoor heat exchanger (3), and Injector (4) is additionally provided between the outdoor heat exchanger (2) and the indoor heat exchanger (3), and in the injector (4) gas-liquid separator (5), the liquid outlet of the gas-liquid separator (5) are additionally provided between the indoor heat exchanger (3) (53) it is connected to the indoor heat exchanger (3).
- 2. air-conditioning system according to claim 1, it is characterised in that：The injector (4) includes main import (41), injection Import (42) and jet exit (43), the main import (41) are connected with the outdoor heat exchanger (2), the injection import (42) The indoor heat exchanger (3) is connected to, the jet exit (43) is connected to the gas-liquid separator (5).
- 3. air-conditioning system according to claim 2, it is characterised in that：The gas-liquid separator (5) also includes fluid inlet (51), the fluid inlet (51) is connected by pipeline with the jet exit (43).
- 4. according to the air-conditioning system described in one of claim 1-3, it is characterised in that：The air-conditioning system is air conditioning for automobiles system System, and the refrigerant of air-conditioning system is CO2。
- 5. air-conditioning system according to claim 4, it is characterised in that：Also set up in parallel with the indoor heat exchanger (3) There is battery heat exchanger (6), and the 5th magnetic valve (7) is additionally provided with the pipeline where the battery heat exchanger (6).
- 6. according to the air-conditioning system described in claim 1-3, one of 5, it is characterised in that：Air intake duct in the compressor (1) Subcooler (9), the intermediate duct between the outdoor heat exchanger (2) and the injector (4) are additionally provided with road (10) (11) subcooler (9) is passed through so that the suction line (10) is with the intermediate duct (11) in the subcooler (9) exchanged heat in.
- 7. air-conditioning system according to claim 6, it is characterised in that：In the injector (4) and the subcooler (9) Between be additionally provided with the first expansion valve (12), is additionally provided between the subcooler (9) and the outdoor heat exchanger (2) Two expansion valves (13), and check valve (14) is additionally provided with parallel on second expansion valve (13).
- 8. air-conditioning system according to claim 7, it is characterised in that：When the injector (4) includes injection import (42) When, the indoor heat exchanger (3) is communicated to the injection import (42) by connecting pipeline (17), in the connecting pipeline (17) On be additionally provided with second solenoid valve (18).
- 9. air-conditioning system according to claim 8, it is characterised in that：On the connecting pipeline (17), positioned at described Also branch branch line (19), the branch line are provided between two magnetic valves (18) and the indoor heat exchanger (3) (19) it is connected on the pipeline between first expansion valve (12) and the subcooler (9), and in the branch line (19) On be additionally provided with the 3rd magnetic valve (20).
- 10. according to the air-conditioning system described in one of claim 1-3,5,7-9, it is characterised in that：Also include four-way valve (8), institute Four connection ends for stating four-way valve (8) are respectively connecting to the liquid outlet (53) of the gas-liquid separator (5), the interior The exhaust end of heat exchanger (3), the outdoor heat exchanger (2) and the compressor (1).
- 11. air-conditioning system according to claim 10, it is characterised in that：In the four-way valve (8) and the indoor heat exchange The 3rd expansion valve (15) is additionally provided with pipeline between device (3), and is also set in parallel on the 3rd expansion valve (15) There is the 4th magnetic valve (16).
- 12. according to the air-conditioning system described in one of claim 1-3,5,7-9, it is characterised in that：Also include triple valve (21), institute Three connection ends for stating triple valve (21) are respectively connecting to the liquid outlet (53) of the gas-liquid separator (5), the room The exhaust end of external heat exchanger (2) and the compressor (1)；And the 6th magnetic valve (22) is additionally provided between the gas-liquid separator (5) and the triple valve (21), described Also branch the second branch road (23), second branch road are provided between gas-liquid separator (5) and the 6th magnetic valve (22) (23) outdoor heat exchanger (2) is connected to, and the 7th magnetic valve (24) is provided with second branch road (23).
- 13. air-conditioning system according to claim 12, it is characterised in that：In the triple valve (21) and the indoor heat exchange The 3rd expansion valve (15) is additionally provided with pipeline between device (3), and is also set in parallel on the 3rd expansion valve (15) There is the 4th magnetic valve (16).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720589027.8U CN206734008U (en) | 2017-05-24 | 2017-05-24 | Air conditioning system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720589027.8U CN206734008U (en) | 2017-05-24 | 2017-05-24 | Air conditioning system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107176009A (en) * | 2017-05-24 | 2017-09-19 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
| CN110654199A (en) * | 2019-10-10 | 2020-01-07 | 上海理工大学 | New energy automobile heat pump air conditioning system with ejector |
| CN111043787A (en) * | 2018-10-12 | 2020-04-21 | 青岛海尔（胶州）空调器有限公司 | Air conditioner and control method thereof |
| CN112361638A (en) * | 2019-07-25 | 2021-02-12 | 青岛海尔空调电子有限公司 | Air conditioning system |
-
2017
- 2017-05-24 CN CN201720589027.8U patent/CN206734008U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107176009A (en) * | 2017-05-24 | 2017-09-19 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
| CN111043787A (en) * | 2018-10-12 | 2020-04-21 | 青岛海尔（胶州）空调器有限公司 | Air conditioner and control method thereof |
| CN112361638A (en) * | 2019-07-25 | 2021-02-12 | 青岛海尔空调电子有限公司 | Air conditioning system |
| CN112361638B (en) * | 2019-07-25 | 2021-11-26 | 青岛海尔空调电子有限公司 | Air conditioning system |
| CN110654199A (en) * | 2019-10-10 | 2020-01-07 | 上海理工大学 | New energy automobile heat pump air conditioning system with ejector |
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