CN100535550C - Automobile heat pump air conditioner system - Google Patents
Automobile heat pump air conditioner system Download PDFInfo
- Publication number
- CN100535550C CN100535550C CNB2008100298053A CN200810029805A CN100535550C CN 100535550 C CN100535550 C CN 100535550C CN B2008100298053 A CNB2008100298053 A CN B2008100298053A CN 200810029805 A CN200810029805 A CN 200810029805A CN 100535550 C CN100535550 C CN 100535550C
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- check valve
- heat exchanger
- valve
- liquid
- outdoor heat
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Abstract
A heat pump system for an automotive air conditioner is characterized in that four check valves are added on a throttling and pressure regulating device between an outdoor heat exchanger and an indoor heat exchanger in the system; the throttling and pressure regulating device includes a liquid reservoir, a dryer, liquid glasses and an expansion valve; the check valves are divided into two groups and are sequentially connected in series in the group in the same direction; the indoor heat exchanger and the outdoor heat exchanger are respectively connected between check valves in the different groups; the outlet ends of the check valves are respectively connected with the liquid reservoir of the throttling and pressure regulating device; and the inlet ends of the check valves are respectively connected with the expansion valve of the throttling and pressure regulating device. According to the unidirectional ventilation characteristic of the check valve, the flow direction of a refrigerant is changed in the system to achieve the function of a two-way expansion valve, so that the expansion valve has more reliable and safer operation and can meet the use requirement in refrigeration and heating operation.
Description
Technical field
The present invention relates to the air conditioning for automobiles field, especially a kind of pump type heat automotive air-conditioning system.
Background technology
Expansion valve also claims choke valve, is the critical piece of formed automobile air-conditioning refrigeration system, is installed in the evaporator inlet place, is the high pressure of automobile air conditioning refrigerating system and the separation of low pressure.Its function is: the high pressure liquid refrigerant expenditure and pressure that comes from receiver drier, regulate and control the liquid refrigeration agent flux that enters in the evaporimeter, make it to adapt to the variation of cooling load, the unusual overheated and compressor generation liquid hit phenomenon of device outlet steam can avoid evaporating simultaneously, be to be compressed after unevaporated liquid refrigerant enters compressor, very easily cause the damage of compressor valve plate.
Using now two-way expansion valve on the market is the restricting element that makes up heat pump type air conditioning system, and it can be realized freezing and heat the operation of two states, but but can not satisfy the efficient coupling of freezing and heating two states simultaneously.It is opposite that the difference of refrigeration when heating work is that cold-producing medium flows through the direction of two-way expansion valve.Because two-way expansion valve turnover pipe is in different size, Yi Bian be tubule, another side is bassoon.Freeze in addition and when heating the actual cycle amount of cold-producing medium different.When system realized refrigerating operaton, cold-producing medium flow to from two-way expansion valve tubule, and bassoon is flowed out, and flow can normally satisfy the requirement of system; But quite different when heating inverted running, caliber diminishes after the throttling, and resistance increases the circular flow that can reduce cold-producing medium; Because the evaporating pressure of cold-producing medium is low, density after the vaporization is low, thereby mass flow is much lower when mobile than forward (refrigeration), it is too little to cause making heating capacity, can not satisfy instructions for use, this is because air conditioning for automobiles outdoor heat exchanger and indoor heat exchanger area of dissipation ratio are difficult to satisfy simultaneously two-way efficient coupling.
Because freeze and heating operation state cold-producing medium all to pass through expansion valve, cold-producing medium must be by drier and liquid-sighting glass before the process expansion valve, therefore need to be provided with two driers and two liquid-sighting glass in system, make system architecture become complicated, product cost increases.
Summary of the invention
Prior art problem to be solved by this invention provides a kind of tide of motorism pump air conditioner system, has overcome when reverse heating operation, and caliber diminishes after the cold-producing medium throttling, resistance increases, refrigerant flow reduces, and the heating capacity that causes is too little, can not satisfy the phenomenon of instructions for use.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of tide of motorism pump air conditioner system, comprise compressor, be connected with cross valve on the described compressor, be provided with vapour liquid separator between described compressor and the return duct that cross valve is connected, described cross valve is connected with indoor side heat exchanger one end with outdoor heat exchanger one end respectively, the described outdoor heat exchanger other end is connected with a by-passing valve, the other end of described by-passing valve is connected between compressor and the outflow tube that cross valve is connected, described indoor side heat exchanger and outdoor heat converter are connected with liquid reservoir respectively, drier, liquid-sighting glass and expansion valve, described indoor side heat exchanger connects liquid reservoir one end and is connected with first check valve and second check valve, described first check valve and second check valve are connected in proper order, and described indoor side heat exchanger is connected between described first check valve and second check valve; Described outdoor heat exchanger connects drier one end and is connected with the 3rd check valve and the 4th check valve, described the 3rd check valve and the 4th check valve are connected in proper order, and its series connection direction is identical with second check valve series connection direction with described first check valve, and described outdoor heat exchanger is connected between described the 3rd check valve and the 4th check valve; Described liquid reservoir, drier, liquid-sighting glass and expansion valve constitute the throttling regulator, described liquid reservoir, drier, liquid-sighting glass and expansion valve are linked in sequence, described first check valve is connected with described liquid reservoir respectively with the 3rd check valve outlet side, and described second check valve is connected with described expansion valve respectively with the 4th check valve inlet end; During refrigeration, the cold-producing medium that described outdoor heat exchanger flows out passes through described first check valve, throttling regulator and the 4th check valve in proper order and flows to indoor side heat exchanger; When heating, the cold-producing medium that described indoor side heat exchanger flows out passes through described the 3rd check valve, the throttling regulator and second check valve in proper order and flows to outdoor heat exchanger.
As improvement, be provided with a stop valve between drier in the described throttling regulator and the liquid-sighting glass.
The beneficial effect that the present invention brought is:
1. because outdoor heat exchanger has been connected check valve apparatus with indoor side heat exchanger, make to freeze that the direction of liquid refrigerant passes through expansion valve becomes the same when heating, all be to advance from tubule, bassoon is come out, overcome when heating, caliber diminishes after the cold-producing medium throttling, and resistance increases.Make that by check valve refrigeration and the cold-producing medium that heats all are that tubule is entered, bassoon is come out, and freezes and heat all to satisfy user demand.
2. expansion valve is consistent with the shelves product with air conditioning for automobiles in this mechanism, and public part is liquid reservoir, drying bottle, liquid-sighting glass, expansion valve, saves a drying bottle and a liquid-sighting glass than traditional system, highly versatile, and parts easily obtain.
3. owing to lacked a drier and a liquid-sighting glass in the system, make system architecture become simple.
4. owing to lacked a drier and a liquid-sighting glass in the system, save product cost, improved economic benefit.
5. the present invention mainly is by check valve and single ported thermostatic expansion valve and combination thereof, changes cold-producing medium in the intrasystem flow direction, thereby reaches the purpose of the function of two-way expansion valve.More reliable safer when making expansion valve work.
Description of drawings
Fig. 1 is a line arrangement flow chart of the present invention;
Fig. 2 is a fundamental diagram of the present invention.
The specific embodiment
The invention will be further described below in conjunction with Figure of description
A kind of tide of motorism pump air conditioner system, described tide of motorism pump air conditioner system comprises compressor 5, be connected with cross valve 6 on the described compressor 5, be provided with vapour liquid separator 7 between described compressor 5 and the return duct that cross valve 6 is connected, described cross valve 6 is connected with indoor side heat exchanger 14 1 ends with outdoor heat exchanger 15 1 ends respectively, described outdoor heat exchanger 15 other ends are connected with a by-passing valve 9, the other end of described by-passing valve 9 is connected between compressor 5 and the outflow tube that cross valve 6 is connected, described indoor side heat exchanger 14 and outdoor heat exchanger 15 are connected with liquid reservoir 8 respectively, drier 10, liquid-sighting glass 12 and expansion valve 13, described indoor side heat exchanger 14 connects liquid reservoir 8 one ends and is connected with first check valve 1 and second check valve 2, described first check valve 1 and the 2 order series connection of second check valve, described indoor side heat exchanger 14 is connected between described first check valve 1 and second check valve 2; Described outdoor heat exchanger 15 connects drier 10 1 ends and is connected with the 3rd check valve 3 and the 4th check valve 4, described the 3rd check valve 3 and the 4 order series connection of the 4th check valve, and its series connection direction is identical with second check valve, 2 series connection directions with described first check valve 1, and described outdoor heat exchanger 15 is connected between described the 3rd check valve 3 and the 4th check valve 4; Described liquid reservoir 8, drier 10, liquid-sighting glass 12 and expansion valve 13 constitute the throttling regulator, described liquid reservoir 8, drier 10, liquid-sighting glass 12 and expansion valve 13 are linked in sequence, described first check valve 1 is connected with described liquid reservoir 8 respectively with the 3rd check valve 3 outlet sides, and described second check valve 2 is connected with described expansion valve 13 respectively with the 4th check valve 4 inlet ends.
During refrigeration, cross valve 6 commutations are connected solid line, and at this moment indoor side heat exchanger 14 serves as evaporimeter, and outdoor heat exchanger 15 serves as condenser.Cross hot gas from the low-temp low-pressure of indoor side heat exchanger 14 and enter vapour liquid separator 7 through cross valve 6, after isolating liquid, did hot gas and sucked the gas discharge that is collapsed into HTHP by compressor 5 by return duct, gas is by the outflow tube cross valve 6 of flowing through, enter into outdoor heat exchanger 15 heat release condensations then, become supercooled liquid.Supercooled liquid enters into the throttling regulator by first check valve 3, at first be to enter into liquid reservoir 8, store unnecessary cold-producing medium, enter into drier 10 through behind the liquid reservoir 8, cold-producing medium is carried out the stop valve of flowing through behind the filtering, dehumidifying, stop valve can more effective realization to the control of refrigerant flow, cold-producing medium enters into expansion valve 13 by liquid-sighting glass 12 at last, supercooled liquid makes cold-producing medium flow through the spatial volume increase through expansion valve 13, its pressure and temperature sharply descends, become the moist steam of low-temp low-pressure, the moist steam of low-temp low-pressure enters in the indoor side heat exchanger 14 by the 4th check valve 4, and heat absorption evaporation rapidly.Carry out flow-control simultaneously in expansion process,, thereby reach the purpose that room air is lowered so that supply with the required cold-producing medium of indoor side heat exchanger 14.Cross hot gas then and enter next circulation through cross valve 6 and vapour liquid separator 7 again.
When heating, cross valve 6 commutations are connected dotted line, and at this moment indoor side heat exchanger 14 serves as condenser, and outdoor heat exchanger 15 serves as evaporimeter.Cross hot gas from the low-temp low-pressure of outdoor heat exchanger 15 and enter vapour liquid separator 7 through cross valve 6, after isolating liquid, did hot gas and sucked the gas discharge that is collapsed into HTHP by compressor 5 by return duct, gas is by the outflow tube cross valve 6 of flowing through, enter into indoor side heat exchanger 14 heat release condensations then, become supercooled liquid.Supercooled liquid enters into the throttling regulator by the 3rd check valve 3, at first be to enter into liquid reservoir 8, store unnecessary cold-producing medium, enter into drier 10 through behind the liquid reservoir 8, cold-producing medium is carried out the stop valve of flowing through behind the filtering, dehumidifying, stop valve can more effective realization to the control of refrigerant flow, cold-producing medium enters into expansion valve 13 by liquid-sighting glass 12 at last, supercooled liquid makes cold-producing medium flow through the spatial volume increase through expansion valve 13, its pressure and temperature sharply descends, become the moist steam of low-temp low-pressure, the moist steam of low-temp low-pressure is by in second check valve, the 1 inlet chamber outside heat exchangers 15, and heat absorption evaporation rapidly.Carry out flow-control simultaneously in expansion process, so that the required cold-producing medium of supply chamber outside heat exchangers 15, thereby reach the heated purpose of room air.Cross hot gas then and enter next circulation through cross valve 6 and vapour liquid separator 7 again.
By-passing valve 9 plays a part to cut off in system or opens the conveying pipe of refrigerant road, and its device pressure anomaly that can avoid evaporating descends, and indoor temperature is controlled in the prescribed limit, and the device frosting that avoids evaporating.When compressor 5 rotating speeds raise, its pressure of inspiration(Pi) reduced, and evaporating pressure also drops to below the setting thereupon, at this moment the easy frosting of evaporimeter, control by-passing valve 9 this moment and open, the cold-producing medium of a part of high pressure-temperature directly is inhaled into compressor 5, and compressor 5 pressures of inspiration(Pi) rise, evaporating pressure also rises thereupon, when rising to certain value, 9 disconnected closing, the so constantly circulations of control by-passing valve, compressor 5 pressures of inspiration(Pi) are stabilized in the prescribed limit, and the device frosting avoids evaporating.
By the way flow general character of check valve, a kind of tide of motorism pump air conditioner system of the present invention changes cold-producing medium in the intrasystem flow direction, thereby reaches the purpose of the function of two-way expansion valve.Make expansion valve when work more reliable safer, and when operating in refrigeration and heating, all can satisfy user demand.
Claims (2)
1. tide of motorism pump air conditioner system, comprise compressor, be connected with cross valve on the described compressor, be provided with vapour liquid separator between described compressor and the return duct that cross valve is connected, described cross valve is connected with indoor side heat exchanger one end with outdoor heat exchanger one end respectively, the described outdoor heat exchanger other end is connected with a by-passing valve, the other end of described by-passing valve is connected between compressor and the outflow tube that cross valve is connected, and described indoor side heat exchanger and outdoor heat converter are connected with liquid reservoir, drier, liquid-sighting glass and expansion valve respectively; It is characterized in that: described indoor side heat exchanger connects liquid reservoir one end and is connected with first check valve and second check valve, described first check valve and second check valve are connected in proper order, and described indoor side heat exchanger is connected between described first check valve and second check valve; Described outdoor heat exchanger connects drier one end and is connected with the 3rd check valve and the 4th check valve, described the 3rd check valve and the 4th check valve are connected in proper order, and its series connection direction is identical with second check valve series connection direction with described first check valve, and described outdoor heat exchanger is connected between described the 3rd check valve and the 4th check valve; Described liquid reservoir, drier, liquid-sighting glass and expansion valve constitute the throttling regulator, described liquid reservoir, drier, liquid-sighting glass and expansion valve are linked in sequence, described first check valve is connected with described liquid reservoir respectively with the 3rd check valve outlet side, and described second check valve is connected with described expansion valve respectively with the 4th check valve inlet end; During refrigeration, the cold-producing medium that described outdoor heat exchanger flows out passes through described first check valve, throttling regulator and the 4th check valve in proper order and flows to indoor side heat exchanger; When heating, the cold-producing medium that described indoor side heat exchanger flows out passes through described the 3rd check valve, the throttling regulator and second check valve in proper order and flows to outdoor heat exchanger.
2. a kind of device that substitutes two-way expansion valve according to claim 1 is characterized in that: be provided with a stop valve between drier in the described throttling regulator and the liquid-sighting glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100298053A CN100535550C (en) | 2008-07-29 | 2008-07-29 | Automobile heat pump air conditioner system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100298053A CN100535550C (en) | 2008-07-29 | 2008-07-29 | Automobile heat pump air conditioner system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101324382A CN101324382A (en) | 2008-12-17 |
| CN100535550C true CN100535550C (en) | 2009-09-02 |
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ID=40188018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2008100298053A Expired - Fee Related CN100535550C (en) | 2008-07-29 | 2008-07-29 | Automobile heat pump air conditioner system |
Country Status (1)
| Country | Link |
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| CN (1) | CN100535550C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192676B (en) * | 2012-01-05 | 2016-06-22 | 杭州三花研究院有限公司 | A kind of automotive air-conditioning system |
| CN102765308A (en) * | 2012-08-01 | 2012-11-07 | 江苏晨宇车业有限公司 | New-energy cold and heat air exchange system of air conditioner for automobile |
| DE102012222594B4 (en) | 2012-12-10 | 2018-05-17 | Bayerische Motoren Werke Aktiengesellschaft | Method for operating a refrigerant circuit as a heat pump and as a heat pump operable refrigerant circuit |
| CN105588358A (en) * | 2014-11-13 | 2016-05-18 | 海信（山东）空调有限公司 | Air supplementing and enthalpy increasing air conditioner system and air conditioner |
| JP6415943B2 (en) * | 2014-11-21 | 2018-10-31 | 三菱重工サーマルシステムズ株式会社 | Heat pump air conditioning system for vehicles |
| CN109367351B (en) * | 2018-10-13 | 2021-10-08 | 朱森林 | Multifunctional system for electric automobile |
| CN116222026A (en) * | 2023-01-30 | 2023-06-06 | 中车大连机车研究所有限公司 | Throttling device and CO 2 Bidirectional circulating heat pump air conditioner and control method thereof |
-
2008
- 2008-07-29 CN CNB2008100298053A patent/CN100535550C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101324382A (en) | 2008-12-17 |
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Granted publication date: 20090902 Termination date: 20190729 |
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