CN207555847U - Air-conditioning system - Google Patents
Air-conditioning system Download PDFInfo
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- CN207555847U CN207555847U CN201721582771.1U CN201721582771U CN207555847U CN 207555847 U CN207555847 U CN 207555847U CN 201721582771 U CN201721582771 U CN 201721582771U CN 207555847 U CN207555847 U CN 207555847U
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- heat exchanger
- air
- conditioning system
- refrigerant
- compressor
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Abstract
The utility model belongs to automobile air conditioning technology field, disclose a kind of air-conditioning system, including compressor, condenser, expansion valve and the evaporator for being sequentially connected and being formed into a loop, one external heat exchanger is installed between the exhaust outlet of the compressor and the entrance of the condenser, the external heat exchanger includes heat exchanger tube and inner cavity, the water inlet adjunction cooling water source of the heat exchanger tube, water outlet connects air, refrigerant inlet connect compressor exhaust outlet on the inner cavity, the refrigerant outlet connection condenser inlet on inner cavity.The utility model is by installing external heat exchanger, system condensing temperature is reduced, the degree of supercooling of refrigerant is increased, reduces the compression ratio of compressor, then reduce compressor power consumption, increase the flow of air-conditioning system refrigerant, so as to reach raising air-conditioning system refrigerating capacity and COP and extend the purpose of compressor service life.
Description
Technical field
The utility model belongs to air-conditioning technical field, particularly a kind of air-conditioning system.
Background technology
In order to improve air-conditioning system COP and refrigerating capacity, the prior art mainly has 3 kinds of methods to realize, within air-conditioning systems
Three kinds of methods can be used individually or be used simultaneously.First, replacing fixed displacement compressor with variable compressor, become discharge capacity compression
Function adjusts compressor displacement according to the size of thermic load, avoids system shock caused by the cut-out of fixed displacement compressor clutch
Influence to engine life and oil consumption；Second is that inner heat exchanger backheat technology is used in system circulation circuit；Third, with electricity
Sub- expansion valve substitutes heating power expansion valve, it can accurately control refrigeration system refrigerant flow, air-conditioning system is made to reach best COP
Value
Referring to attached drawing 1, existing air-conditioning system include the compressor 11 for being sequentially connected and being formed into a loop by high-voltage tube 12,
Condenser 13, expansion valve 14 and evaporator 16, install inner heat exchanger 15 in this circuit, and inner heat exchanger 15 will condense
The port of export of device 13 carries out heat exchange with the port of export of evaporator 16.Although this system is also improved air-conditioning system COP and system
Cold, but the low-pressure section in system circulation circuit is improved only, high-pressure section especially exhaust pipe also has improvement space not have
It utilizes.
Utility model content
In order to solve the above-mentioned technical problem, the utility model provides a kind of air-conditioning system, by installing external heat exchanger,
System condensing temperature is reduced, the degree of supercooling of refrigerant is increased, reduces the compression ratio of compressor, then reduces compressor
Power consumption increases the flow of air-conditioning system refrigerant, so as to reach raising air-conditioning system refrigerating capacity and COP and extend
Compressor service life.
The technical scheme adopted by the utility model is that：
A kind of air-conditioning system, it is characterized in that, including be sequentially connected and be formed into a loop compressor, condenser, expansion valve and
Evaporator installs an external heat exchanger between the exhaust outlet of the compressor and the entrance of the condenser, described outer
Portion's heat exchanger includes heat exchanger tube and inner cavity, the water inlet adjunction cooling water source of the heat exchanger tube, and water outlet connects air, described
Refrigerant inlet connect compressor exhaust outlet on inner cavity, the refrigerant outlet connection condenser inlet on inner cavity.
Further, the water inlet of the external heat exchanger is located at bottom, and water outlet is located at top, the external heat exchange
The water inlet of device connects water pipe to cooling water source, and the cooling water source is higher than the water outlet of the external heat exchanger.
Further, the refrigerant inlet of the inner cavity is located at the top of inner cavity, and refrigerant outlet is located at the lower section of inner cavity.
Further, inner heat exchanger is installed in the circuit, there are four interfaces for the inner heat exchanger, connect respectively
The entrance of the outlet of condenser and the entrance of expansion valve, the outlet of expansion valve and compressor is connect, the inner heat exchanger will be cold
The port of export of condenser and the port of export of evaporator carry out heat exchange.
Further, the external heat exchanger include a shell, the enclosure be harmonica-shaped tube or helix tube, it is described
The both ends connecting interface pipe of helix tube, as the water inlet and water outlet of the external heat exchanger, the both ends of the shell connect
It connects refrigerant to take over, refrigerant inlet and refrigerant outlet as the external heat exchanger.
Further, the cooling water source is evaporator condensation water or external water source.
Further, the expansion valve is electric expansion valve.
Further, the material of the external heat exchanger is aluminium alloy, and is braze-welded structure.
Further, the housing is cylindrical housings, and the helix tube is distorted by round tube or harmonica-shaped tube.
The beneficial effects of the utility model are：
（1）Difference in height between cooling water and high-voltage tube makes cooling water rely on its own gravity from exterior as power
In the connector inflow device of heat exchanger, exterior space is flowed to full of the outlet from device top after device, refrigerant from
Top connector enters inner cavity at the top of external heat exchanger, later along inner cavity flow down, is flowed out to later from bottom discharge outlet
Condenser completes heat exchange in a device, and after air-conditioning first time use, water has been expired in storage always in device；Because being stored up in device
There is water, also there is auxiliary heat dissipation effect in when starting of air conditioner, and improving COP and cooling system amount reduces starting torque, reduces
Carbon emission；
（2）Air-conditioning COP and cooling system amount are improved 2% or so, carbon emission amount is effectively reduced and improves air-conditioning system
Comfort property, achieved the purpose that energy-saving.
Description of the drawings
Attached drawing 1 is the air-conditioning system principle schematic of the prior art；
Attached drawing 2 is the principle schematic of the air-conditioning system of the utility model；
Attached drawing 3 is the structure diagram of the air-conditioning system of the utility model；
Attached drawing 4 is the structure diagram of external heat exchanger；
Attached drawing 5 is the prior art and the pressure enthalpy compares figure of the utility model.
Label in attached drawing is respectively：
11. compressor；12. high-voltage tube；
13. condenser；14. expansion valve；
15. inner heat exchanger；16. evaporator；
17. external heat exchanger；18. water pipe；
701. cooling water inlets are taken over；702. shell；
703. helix tube；704. refrigerant outlet adapter；
705. cooling water outlets are taken over；706. refrigerant inlets are taken over.
Specific embodiment
It elaborates below in conjunction with the accompanying drawings to the specific embodiment of the utility model air-conditioning system.
Referring to attached drawing 2,3, the air-conditioning system of the utility model includes the compressor 11 for being sequentially connected and being formed into a loop, condensation
Device 13, electric expansion valve 14 and evaporator 16 are installed between the exhaust outlet of compressor 11 and the entrance of condenser 13 outside one
Portion's heat exchanger 17, external heat exchanger include heat exchanger tube and inner cavity, the water inlet adjunction cooling water source of heat exchanger tube, and water outlet connects
Connect air, 11 exhaust outlet of refrigerant inlet connect compressor on inner cavity, the refrigerant outlet connection condenser 13 on inner cavity enters
Mouthful.The water inlet of external heat exchanger 17 is located at bottom, and water outlet is located at top, the water inlet connection water of external heat exchanger 17
Pipe 18 to cooling water source, cooling water source is higher than the water outlet of external heat exchanger 17.The refrigerant inlet of inner cavity is located at inner cavity
Top, refrigerant outlet are located at the lower section of inner cavity.16 condensed water of evaporator directly may be used as cooling water source, will connect water pipe 18
Wet part is connected to the lower section of evaporator 16, you can realizes and receives condensed water.
In addition, same as the prior art, inner heat exchanger 15 is installed in the loop, inner heat exchanger 15 is by condenser
13 port of export carries out heat exchange with the port of export of evaporator 16.
The utility model carries out the compressor exhaust pipe in air-conditioning system using air-conditioning condensed water itself or external water source
Decrease temperature and pressure cools down and finally improves air-conditioning system COP and refrigerating capacity, faster, is efficiently cooled down with reaching to vehicle room air
A kind of air-conditioning system of dehumidifying.
The air-conditioning system of the utility model has the compressor for being compressed and being conveyed to refrigerant, it is air-conditioning system
The power source of controlling SAPMAC method does work to refrigerant compression.The air-conditioning system has high temperature and high pressure gaseous refrigerant with entering it
Internal cooling water carries out the external heat exchanger of heat exchange,
With continued reference to attached drawing 4, there is cooling water to enter from bottom connector and from top outlet inside external heat exchanger
The inside cooling-water duct in air and the high temperature and high pressure gaseous refrigerant from compressor is expelled to from top connector to enter
And the internal refrigerant pass of condenser inlet is expelled to from bottom discharge outlet.There is a circular shell outside external heat exchanger
702, have inside shell 702 and be twisted into spiral helicine helix tube 703 by harmonica-shaped tube or pipe and be connected with helix tube 703 cold
But water inlet take over 701 and cooling water outlet take over 705, helix tube 703 connect with cooling water inlet take over 701 and cooling water outlet
Pipe 705 constitutes the inner passage of cooling water.There is the refrigerant inlet being connected with shell 702 to take over outside external heat exchanger
706 and refrigerant outlet adapter 704, spiral tube outer surface go out with 702 inner wall of shell and refrigerant inlet take over 706 and refrigerant
Mouth take over 704 forms the inner passage of refrigerant；
The cooling water of lower temperature carries out heat exchange, refrigeration in 703 outer surface of helix tube with high temperature and high pressure gaseous refrigerant
Agent temperature reduces, and water temperature increases and take away the heat of refrigerant；Helix tube 703 distorts spiral, makes cooling water and refrigerant
Turbulent flow is formed in flowing, heat transfer effect is enhanced；In addition, cooling water flows, freezes from the bottom up in external heat exchanger
Agent flows and forms the reverse flow between refrigerant and cooling water from top to bottom, has obtained further carrying so as to exchange heat to imitate
It is high；Each component of external heat exchanger forms the component of an entirety, all aluminium alloys of material, air-tightness by welding
More preferably, refrigerant leakage rate is extremely low, meets requirement of the air-conditioning system to air-tightness.
The air-conditioning system of the utility model have for the high-temperature high-pressure refrigerant from external heat exchanger to air
The condenser of heat dissipation is distributed by its heat by the secondary high-temperature high-pressure refrigerant from external heat exchanger into air；This
There is the air-conditioning system of utility model the medium temperature high pressure liquid refrigerant for condenser in future to be transported to electric expansion valve, incite somebody to action
The low-temp low-pressure overheat gaseous refrigerant come out from electric expansion valve is transmitted back to compressor, the medium temperature high pressure for being simultaneously from condenser
Liquid refrigerant carries out heat inside it with the low-temp low-pressure gaseous refrigerant come out after evaporation and heat-exchange from electric expansion valve
Exchange, its in future flash-pot refrigerant heat temperature raising after flow back into compressor, the refrigerant of condenser in future carries out heat dissipation drop
Evaporator is supplied after temperature.
The air-conditioning system of the utility model has for being throttled, being depressured to the refrigerant for entering evaporator, passes through sense
The electric expansion valve that refrigerant temperature and pressure is answered accurately to adjust cold medium flux, it can be according to required heat load adjustment
Refrigerant flow；The air-conditioning system of the utility model have for make refrigerant and will be supplied between indoor air into
Row heat exchange, the evaporator so as to be cooled down to air.
Referring to attached drawing 5, the air-conditioning system of the utility model has the effectiveness for improving air-conditioning system refrigerating capacity and COP, in Fig. 5
3-5-7-2-3 be the prior art pressure-enthalpy chart, COP=(h3-h2)/(h5-h3)；3-4-6-8-1-3 is the utility model
Pressure-enthalpy chart, COP=(h3-h1)/(h4-h3)；The Compressor Discharge Pressure that the utility model reduces is P5-P4, specific discharge increasing
The refrigerating capacity added is h2-h1, because Compressor Discharge Pressure reduces, flow system flow also can accordingly increase, and incrementss are △ Q, and system is total
The incrementss of refrigerating capacity are（h2-h1）*△Q；In addition, it is clear that the COP values of the utility model are more than the COP values of the prior art.
The utility model can also be applied to that central air-conditioning, rail traffic air-conditioning, car air-conditioner etc. are similar condensation aquatic products
Raw or external water source air-conditioning and refrigerating field.
It the above is only the preferred embodiment of the utility model, it is noted that for the ordinary skill people of the art
Member, under the premise of the utility model principle is not departed from, can also make several improvements and modifications, these improvements and modifications also should
It is considered as the scope of protection of the utility model.
Claims (9)
1. a kind of air-conditioning system, it is characterised in that：Including be sequentially connected and be formed into a loop compressor, condenser, expansion valve and
Evaporator installs an external heat exchanger between the exhaust outlet of the compressor and the entrance of the condenser, described outer
Portion's heat exchanger includes heat exchanger tube and inner cavity, the water inlet adjunction cooling water source of the heat exchanger tube, and water outlet connects air, described
Refrigerant inlet connect compressor exhaust outlet on inner cavity, the refrigerant outlet connection condenser inlet on inner cavity.
2. air-conditioning system according to claim 1, it is characterised in that：The water inlet of the external heat exchanger is located at bottom
Portion, water outlet are located at top, and the water inlet of the external heat exchanger connects water pipe to cooling water source, and the cooling water source is higher than
The water outlet of the external heat exchanger.
3. air-conditioning system according to claim 2, it is characterised in that：The refrigerant inlet of the inner cavity is located at the upper of inner cavity
Side, refrigerant outlet are located at the lower section of inner cavity.
4. air-conditioning system according to any one of claim 1 to 3, it is characterised in that：In the circuit inside installation
Heat exchanger, there are four interfaces for the inner heat exchanger, connect the outlet of condenser and entrance, the expansion valve of expansion valve respectively
Outlet and compressor entrance, the port of export of the port of export of condenser and evaporator carries out hot friendship by the inner heat exchanger
It changes.
5. air-conditioning system according to any one of claim 1 to 3, it is characterised in that：The external heat exchanger includes
One shell, the enclosure be harmonica-shaped tube or helix tube, the both ends connecting interface pipe of the helix tube, as the outside
The water inlet and water outlet of heat exchanger, the both ends connection refrigerant of the shell is taken over, as the external heat exchanger
Refrigerant inlet and refrigerant outlet.
6. air-conditioning system according to any one of claim 1 to 3, it is characterised in that：The cooling water source is evaporator
Condensed water or external water source.
7. air-conditioning system according to any one of claim 1 to 3, it is characterised in that：The expansion valve is electronic expansion
Valve.
8. air-conditioning system according to any one of claim 1 to 3, it is characterised in that：The material of the external heat exchanger
Expect for aluminium alloy, and be braze-welded structure.
9. air-conditioning system according to claim 5, it is characterised in that：The shell be cylindrical housings, the helix tube
It is distorted by round tube or harmonica-shaped tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721582771.1U CN207555847U (en) | 2017-11-23 | 2017-11-23 | Air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721582771.1U CN207555847U (en) | 2017-11-23 | 2017-11-23 | Air-conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207555847U true CN207555847U (en) | 2018-06-29 |
Family
ID=62680886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721582771.1U Active CN207555847U (en) | 2017-11-23 | 2017-11-23 | Air-conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207555847U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107883495A (en) * | 2017-11-23 | 2018-04-06 | 上海加冷松芝汽车空调股份有限公司 | Air-conditioning system |
-
2017
- 2017-11-23 CN CN201721582771.1U patent/CN207555847U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107883495A (en) * | 2017-11-23 | 2018-04-06 | 上海加冷松芝汽车空调股份有限公司 | Air-conditioning system |
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