CN108705917A - A kind of automotive air-conditioning system being applicable in propane refrigerant - Google Patents
A kind of automotive air-conditioning system being applicable in propane refrigerant Download PDFInfo
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- CN108705917A CN108705917A CN201810339183.8A CN201810339183A CN108705917A CN 108705917 A CN108705917 A CN 108705917A CN 201810339183 A CN201810339183 A CN 201810339183A CN 108705917 A CN108705917 A CN 108705917A
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- air
- refrigerant
- control unit
- temperature
- conditioning
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
- B60H1/03—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant and from a source other than the propulsion plant
- B60H1/034—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant and from a source other than the propulsion plant from the cooling liquid of the propulsion plant and from an electric heating device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3205—Control means therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3227—Cooling devices using compression characterised by the arrangement or the type of heat exchanger, e.g. condenser, evaporator
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The present invention provides a kind of automotive air-conditioning system being applicable in propane refrigerant, including：Conditioning control unit, refrigerant cycle apparatus and coolant circulation unit.The refrigerant cycle apparatus carries out heat exchange by the first air duct and cockpit, so that the cockpit freezes.The refrigerant cycle apparatus carries out heat exchange by coolant liquid circulation pipe and the coolant circulation unit, so that the refrigerant cycle apparatus radiates.The conditioning control unit adjusts the heat exchanger effectiveness of the coolant circulation unit according to refrigerant temperature, and the conditioning control unit adjusts the heat exchanger effectiveness of the refrigerant cycle apparatus also according to setting cryogenic temperature.The present invention can improve the safety of air conditioning for automobiles, reduce the pollution that automobile uses.
Description
Technical field
The present invention relates to automobile air conditioning technology field more particularly to a kind of automotive air-conditioning systems being applicable in propane refrigerant.
Background technology
The refrigerant generally used in automotive air-conditioning system at present is freon class synthesis of organic substance, is easy to induce ozone layer
Hole and cause greenhouse effects, detrimental effect can be brought to environment.Refrigerant replacement problem in automotive air-conditioning system is
As industry focus of attention.European new listing vehicle uses R1234yf within 2017, since this refrigerant is on the one hand still to environment
There is destruction, on the other hand, is synthetically produced technology and is monopolized by international vendor, once Spread in China, to national related industry chain
Form strong impact.Therefore, domestic scholars carry out technical research, wherein refrigerant R290, dioxy in natural refrigerant refrigerant
Change the emphasis that carbon refrigerant is research.It is mainly characterized by, and working medium can be extracted directly from natural environment, even if leakage is to environment
It is pollution-free.
R290 refrigerants are propane, it is a kind of gas of no color or smell, and fusing point is -186.7 DEG C, and boiling point is -
42.1 DEG C, molecular weight 44.10, relative density 0.58.Propane is slightly soluble in water, is soluble in the organic solvents such as ethyl alcohol.Propane
There are certain damaging effect, excessive propane can be so that people suffocates to the body of people, propane can be used for anaesthetizing in medicine；Concentration
Lower propane can make one dizzy, and as increasing for concentration can be so that people anaesthetizes, whens very high concentrations can make one death by suffocation.
Propane is flammable, and the propane peace and quiet burning of high concentration, propane concentration is relatively low, and the mixing of explosive nature thereof can be formed when being mixed with air
Object, meets open fire or heat source generates violent explosion, and propane can be with oxide vigorous reaction.Propane molecular weight is more than air, expands
It is gathered in the lower section of air after dissipating, meet open fire burning or generates explosion.Therefore, how to prevent R290 refrigerants from leaking and leaking
Later two aspect of measure carries out fire-retardant, the utmostly operation of guarantee air-conditioning safety, with important research significance.
Invention content
The present invention provides a kind of automotive air-conditioning system being applicable in propane refrigerant, solves existing automotive air-conditioning system and uses
When R290 refrigerants, easily there is the problem of leakage causes to burn or explode, the safety of air conditioning for automobiles can be improved, reducing automobile makes
Pollution.
In order to achieve the above object, the present invention provides following technical scheme：
A kind of automotive air-conditioning system being applicable in propane refrigerant, including：Conditioning control unit, refrigerant cycle apparatus and cold
But liquid circulating device；
The refrigerant cycle apparatus carries out heat exchange by the first air duct and cockpit, so that the cockpit freezes；
The refrigerant cycle apparatus carries out heat exchange by coolant liquid circulation pipe and the coolant circulation unit, so that
The refrigerant cycle apparatus heat dissipation；
The conditioning control unit adjusts the heat exchanger effectiveness of the coolant circulation unit according to refrigerant temperature, described
Conditioning control unit adjusts the heat exchanger effectiveness of the refrigerant cycle apparatus also according to setting cryogenic temperature.
Preferably, further include：Heating device；
The heating device carries out heat exchange, the heating device and the air-conditioning by the second air duct and the cockpit
Control unit signal connects；
The conditioning control unit controls the unlatching of the heating device according to setting heating temperature and shuts down.
Preferably, the refrigerant cycle apparatus includes：Condenser, evaporator, compressor and expansion valve；
The compressor is connected by the first pipeline with the condenser, the condenser by the second pipeline with it is described swollen
Swollen valve be connected, the expansion valve is connected by third pipeline with the evaporator, the evaporator by the 4th pipeline with it is described
Compressor is connected；
The condenser is for discharging the heat generated when refrigerant becomes liquid by gaseous state, the coolant circulation unit
Heat exchange is carried out by the coolant liquid circulation pipe and the condenser, to discharge the heat of the condenser discharge；
The evaporator be used for absorb surrounding enviroment heat so that by refrigerant gaseous state, the evaporator are become by liquid
Freezed to the cockpit by first air duct.
Preferably, the coolant circulation unit includes：Radiator, exhaust fan and circulating pump；
The radiator and the circulating pump are serially connected on the coolant liquid circulation pipe, and the exhaust fan is used to dissipate to described
Heat dissipation is exhausted in hot device, and the circulating pump is for making the refrigerating fluid in the refrigerating fluid circulation pipe cycle through the radiator
It radiates, to reduce the coolant temperature；
The conditioning control unit is connect with the exhaust fan and the cycle pump signal respectively, if the coolant liquid is followed
Coolant temperature in endless tube is more than set temperature threshold value, then the conditioning control unit controls the exhaust fan operating.
Preferably, the heating device includes：Heat exchanger and heater；
The heat exchanger carries out heat exchange by circulating water pipe and vehicle motor shell；
The heater is connect with the conditioning control unit signal, is more than the heat exchange in setting heating temperature
When device surface temperature, the conditioning control unit controls the heater electrified regulation.
Preferably, the heater is heater strip.
Preferably, the conditioning control unit includes：Air-conditioner controller, the first temperature sensor, second temperature sensor
With third temperature sensor；
The first input end of the air-conditioner controller is connected with the output end of first temperature sensor, the air-conditioning control
Second input terminal of device processed is connected with the output end of the second temperature sensor, the third input terminal of the air-conditioner controller with
The output end of the third temperature sensor is connected, the air-conditioner controller also with the exhaust fan, the circulating pump, the pressure
Contracting machine is connected with the heater signal；
First temperature sensor is used to detect the refrigerant temperature in the refrigerant cycle apparatus；
The second temperature sensor is used to detect the coolant temperature in the coolant circulation unit；
The third temperature sensor is for detecting the heat-exchanger surface temperature.
Preferably, the conditioning control unit further includes：Pressure sensor；
The pressure sensor output end is connected with the 4th input terminal of the air-conditioner controller, and the pressure sensor is used
In the circulating pressure for detecting the refrigerant cycle apparatus inner refrigerant；
When the circulating pressure is less than setting pressure threshold, the air-conditioner controller controls the compressor operation.
Preferably, the conditioning control unit further includes：Air blower；
The air blower is connect with the air-conditioner controller signal, and the air blower is used for first air duct or described
Gas in second air duct pumps in the cockpit.
Preferably, the condenser is liquid cooled condenser.
The present invention provides a kind of automotive air-conditioning system being applicable in propane refrigerant, using coolant circulation unit to refrigerant
Heat exchange is carried out, and so that refrigerant cycle apparatus is passed through air duct and carries out heat exchange with cockpit, avoids refrigerant directly and air duct
The direct heat exchange of interior air.Solve existing automotive air-conditioning system using R290 refrigerants when, easily occur leakage cause burning or
The problem of explosion, can improve the safety of air conditioning for automobiles, reduce the pollution that automobile uses.
Description of the drawings
In order to illustrate more clearly of specific embodiments of the present invention, attached drawing needed in the embodiment will be made below
Simply introduce.
Fig. 1：It is a kind of automotive air-conditioning system structural schematic diagram provided by the invention；
Fig. 2：It is a kind of automotive air-conditioning system schematic diagram provided in an embodiment of the present invention.
Reference numeral
11 first air ducts
12 coolant liquid circulation pipes
13 second air ducts
21 first pipelines
22 second pipelines
23 third pipelines
24 the 4th pipelines
S1 exhaust fans
S2 circulating pumps
Specific implementation mode
In order to make those skilled in the art more fully understand the scheme of the embodiment of the present invention, below in conjunction with the accompanying drawings and implement
Mode is described in further detail the embodiment of the present invention.
For the air-conditioning system that current vehicle makes, easily there is security risk when using R290 refrigerants, the present invention provides
A kind of automotive air-conditioning system being applicable in propane refrigerant carries out heat exchange to refrigerant using coolant circulation unit, and makes system
Refrigerant cycle device carries out heat exchange by air duct and cockpit, and refrigerant is avoided directly to be handed over the directly heat of the air in air duct
It changes.Solve the problem of that easily occurring leakage when existing automotive air-conditioning system uses R290 refrigerants causes to burn or explode, and can improve
The safety of air conditioning for automobiles reduces the pollution that automobile uses.
As shown in Figure 1, being a kind of automotive air-conditioning system structural schematic diagram provided by the invention, which includes：Air-conditioning control
Unit, refrigerant cycle apparatus and coolant circulation unit processed.The refrigerant cycle apparatus passes through the first air duct 11 and driving
Cabin carries out heat exchange, so that the cockpit freezes.The refrigerant cycle apparatus by coolant liquid circulation pipe 12 with it is described cold
But liquid circulating device carries out heat exchange, so that the refrigerant cycle apparatus radiates.The conditioning control unit is according to refrigerant
Temperature adjusts the heat exchanger effectiveness of the coolant circulation unit, and the conditioning control unit is adjusted also according to setting cryogenic temperature
The heat exchanger effectiveness of the refrigerant cycle apparatus.
Specifically, refrigerant cycle apparatus makes refrigerant by mutual between liquid gas for being recycled to air-conditioning agent cryogen
Air conditioner refrigerating is realized in conversion.Refrigerant cycle apparatus is connected with cockpit by the first air duct, the refrigeration for making refrigerant generate
Air carries out heat exchange with cockpit.Refrigeration is generated since refrigerant cycle apparatus absorbs heat to air, it also is made to air heat dissipation
Heating, and coolant circulation unit distributes heat to refrigerant cycle apparatus and carries out heat exchange, makes the temperature of its refrigerant will not
The problem of heating up, causing poor refrigerating efficiency.Meanwhile indirect thermal friendship is carried out to refrigerant cycle apparatus using coolant circulation unit
Transducing keeps refrigerant closed and the design structure of heat dissipation is more compact and independent, can make the adding amount for effectively reducing refrigerant,
Reduce the security risk that air-conditioning uses.
The system further includes：Heating device；The heating device carries out hot friendship by the second air duct 13 with the cockpit
It changes, the heating device is connect with the conditioning control unit signal.The conditioning control unit heats temperature control according to setting
It makes the unlatching of the heating device and shuts down.
Further, the heating device includes：Heat exchanger and heater.The heat exchanger passes through circulating water pipe and vehicle
Engine housing carries out heat exchange.The heater is connect with the conditioning control unit signal, and temperature is heated in the setting
When degree is more than the heat-exchanger surface temperature, the conditioning control unit controls the heater electrified regulation.Actually answering
In, the heater can be heater strip.
Specifically, heating device can utilize the heat that vehicle motor generates, and cooling water can be used to engine
Shell carries out heat exchange, and cooling water enters heat exchanger by circulating water pipe, and heat is carried out through the air of the second air duct and cockpit
It exchanges, to realize that engine exhaust heat utilizes.But only it can not meet the heating requirement of air-conditioning by engine exhaust heat, pass through
Electrically heated heater can be such that the air in the second air duct further heats up, and can effectively improve the heating efficiency of air-conditioning system.
Further, the refrigerant cycle apparatus includes：Condenser, evaporator, compressor and expansion valve.The compressor
It is connected with the condenser by the first pipeline 21, the condenser is connected by the second pipeline 22 with the expansion valve, described
Expansion valve is connected by third pipeline 23 with the evaporator, and the evaporator passes through the 4th pipeline 24 and the compressor phase
Even.For discharging the heat generated when refrigerant becomes liquid by gaseous state, the coolant circulation unit passes through the condenser
The coolant liquid circulation pipe carries out heat exchange with the condenser, to discharge the heat of the condenser discharge.The evaporator
For absorb surrounding enviroment heat so that by refrigerant gaseous state is become by liquid, the evaporator passes through first air duct pair
The cockpit freezes.
Specifically, since condenser discharge heat makes refrigerant become liquid by gaseous state, the heat that condenser generates needs
It is cooled down by coolant liquid, avoids the temperature raising because of condenser that refrigerant is made to heat up, reduce refrigeration effect.Meanwhile liquid
Refrigerant is nebulized by expansion valve injection, and absorbing heat through evaporator makes refrigerant become gaseous state from liquid, using compression
Machine pressurizes, and makes gaseous refrigerant circular flow in refrigerant cycle apparatus, realizes air conditioner refrigeration effect.
Further, the condenser is liquid cooled condenser.
The coolant circulation unit includes：Radiator, exhaust fan and circulating pump.The radiator and the circulating pump string
It is connected on the coolant liquid circulation pipe, for heat dissipation to be exhausted to the radiator, the circulating pump is used for the exhaust fan
Make the refrigerating fluid in the refrigerating fluid circulation pipe cycle through the radiator to radiate, to reduce the coolant temperature.
The conditioning control unit is connect with the exhaust fan and the cycle pump signal respectively, if in the coolant liquid circulation pipe
Coolant temperature is more than set temperature threshold value, then the conditioning control unit controls the exhaust fan operating.
The conditioning control unit includes：Air-conditioner controller, the first temperature sensor, second temperature sensor and third temperature
Spend sensor.The first input end of the air-conditioner controller is connected with the output end of first temperature sensor, the air-conditioning
Second input terminal of controller is connected with the output end of the second temperature sensor, the third input terminal of the air-conditioner controller
Be connected with the output end of the third temperature sensor, the air-conditioner controller also with the exhaust fan, circulating pump, described
Compressor is connected with the heater signal.First temperature sensor is used to detect the system in the refrigerant cycle apparatus
Refrigerant temperature.The second temperature sensor is used to detect the coolant temperature in the coolant circulation unit.The third
Temperature sensor is for detecting the heat-exchanger surface temperature.
Further, the conditioning control unit further includes：Pressure sensor.The pressure sensor output end and the sky
The 4th input terminal of controller is adjusted to be connected, the pressure sensor is for detecting following for the refrigerant cycle apparatus inner refrigerant
Ring compression.When the circulating pressure is less than setting pressure threshold, the air-conditioner controller controls the compressor operation.
The conditioning control unit further includes：Air blower, the air blower is connect with the air-conditioner controller signal, described
Air blower is for pumping to the gas in first air duct or second air duct in the cockpit.
In practical applications, air-conditioner controller realizes the adjusting of air-conditioning air volume by controlling the operation power of air blower.It is empty
It further includes multiple solenoid valves and air damper controller to adjust control unit, and the air damper controller controls the first air duct and the second air duct
It opens and closes, the solenoid valve is used to control the break-make of coolant liquid circulation pipe and cool water circulating pipe.
As it can be seen that the present invention provides a kind of automotive air-conditioning system being applicable in propane refrigerant, using coolant circulation unit pair
Refrigerant carries out heat exchange, and so that refrigerant cycle apparatus is passed through air duct and carry out heat exchange with cockpit, avoids refrigerant direct
With the direct heat exchange of air in air duct.When solving existing automotive air-conditioning system using R290 refrigerants, easily there is leakage and cause
The problem of burning or explosion, the safety of air conditioning for automobiles can be improved, reduce the pollution that automobile uses.
The structure, feature and effect of the present invention, the above institute is described in detail according to diagrammatically shown embodiment above
Only presently preferred embodiments of the present invention is stated, but the present invention is not to limit practical range, every structure according to the present invention shown in drawing
Change made by thinking, or is revised as the equivalent embodiment of equivalent variations, when not going beyond the spirit of the description and the drawings,
It should all be within the scope of the present invention.
Claims (10)
1. a kind of automotive air-conditioning system being applicable in propane refrigerant, which is characterized in that including：Conditioning control unit, refrigerant follow
Loop device and coolant circulation unit；
The refrigerant cycle apparatus carries out heat exchange by the first air duct and cockpit, so that the cockpit freezes；
The refrigerant cycle apparatus carries out heat exchange by coolant liquid circulation pipe and the coolant circulation unit, so that described
Refrigerant cycle apparatus radiates；
The conditioning control unit adjusts the heat exchanger effectiveness of the coolant circulation unit, the air-conditioning according to refrigerant temperature
Control unit adjusts the heat exchanger effectiveness of the refrigerant cycle apparatus also according to setting cryogenic temperature.
2. automotive air-conditioning system according to claim 1, which is characterized in that further include：Heating device；
The heating device carries out heat exchange, the heating device and the airconditioning control by the second air duct and the cockpit
Cell signal connects；
The conditioning control unit controls the unlatching of the heating device according to setting heating temperature and shuts down.
3. automotive air-conditioning system according to claim 2, which is characterized in that the refrigerant cycle apparatus includes：Condensation
Device, evaporator, compressor and expansion valve；
The compressor is connected by the first pipeline with the condenser, and the condenser passes through the second pipeline and the expansion valve
It is connected, the expansion valve is connected by third pipeline with the evaporator, and the evaporator passes through the 4th pipeline and the compression
Machine is connected；
For discharging the heat generated when refrigerant becomes liquid by gaseous state, the coolant circulation unit passes through the condenser
The coolant liquid circulation pipe carries out heat exchange with the condenser, to discharge the heat of the condenser discharge；
The evaporator be used for absorb surrounding enviroment heat so that by refrigerant gaseous state is become by liquid, the evaporator passes through
Freeze to the cockpit in first air duct.
4. automotive air-conditioning system according to claim 3, which is characterized in that the coolant circulation unit includes：Heat dissipation
Device, exhaust fan and circulating pump；
The radiator and the circulating pump are serially connected on the coolant liquid circulation pipe, and the exhaust fan is used for the radiator
Heat dissipation is exhausted, the circulating pump is carried out for making the refrigerating fluid in the refrigerating fluid circulation pipe cycle through the radiator
Heat dissipation, to reduce the coolant temperature；
The conditioning control unit is connect with the exhaust fan and the cycle pump signal respectively, if the coolant liquid circulation pipe
Interior coolant temperature is more than set temperature threshold value, then the conditioning control unit controls the exhaust fan operating.
5. automotive air-conditioning system according to claim 4, which is characterized in that the heating device includes：Heat exchanger and
Heater；
The heat exchanger carries out heat exchange by circulating water pipe and vehicle motor shell；
The heater is connect with the conditioning control unit signal, is more than the heat exchanger table in setting heating temperature
When the temperature of face, the conditioning control unit controls the heater electrified regulation.
6. automotive air-conditioning system according to claim 5, which is characterized in that the heater is heater strip.
7. automotive air-conditioning system according to claim 6, which is characterized in that the conditioning control unit includes：Air-conditioning control
Device, the first temperature sensor, second temperature sensor and third temperature sensor processed；
The first input end of the air-conditioner controller is connected with the output end of first temperature sensor, the air-conditioner controller
The second input terminal be connected with the output end of the second temperature sensor, the third input terminal of the air-conditioner controller with it is described
The output end of third temperature sensor is connected, the air-conditioner controller also with the exhaust fan, the circulating pump, the compressor
It is connected with the heater signal；
First temperature sensor is used to detect the refrigerant temperature in the refrigerant cycle apparatus；
The second temperature sensor is used to detect the coolant temperature in the coolant circulation unit；
The third temperature sensor is for detecting the heat-exchanger surface temperature.
8. automotive air-conditioning system according to claim 7, which is characterized in that the conditioning control unit further includes：Pressure
Sensor；
The pressure sensor output end is connected with the 4th input terminal of the air-conditioner controller, and the pressure sensor is for examining
Survey the circulating pressure of the refrigerant cycle apparatus inner refrigerant；
When the circulating pressure is less than setting pressure threshold, the air-conditioner controller controls the compressor operation.
9. automotive air-conditioning system according to claim 8, which is characterized in that the conditioning control unit further includes：Air blast
Machine；
The air blower is connect with the air-conditioner controller signal, and the air blower is used for first air duct or described second
Gas in air duct pumps in the cockpit.
10. automotive air-conditioning system according to claim 9, which is characterized in that the condenser is liquid cooled condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810339183.8A CN108705917A (en) | 2018-04-16 | 2018-04-16 | A kind of automotive air-conditioning system being applicable in propane refrigerant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810339183.8A CN108705917A (en) | 2018-04-16 | 2018-04-16 | A kind of automotive air-conditioning system being applicable in propane refrigerant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108705917A true CN108705917A (en) | 2018-10-26 |
Family
ID=63866597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810339183.8A Pending CN108705917A (en) | 2018-04-16 | 2018-04-16 | A kind of automotive air-conditioning system being applicable in propane refrigerant |
Country Status (1)
| Country | Link |
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| CN (1) | CN108705917A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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Application publication date: 20181026 |
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| RJ01 | Rejection of invention patent application after publication |