CN103743149B - Check valve controls the heat pump type air conditioning system of refrigerant flow direction in regenerator - Google Patents
Check valve controls the heat pump type air conditioning system of refrigerant flow direction in regenerator Download PDFInfo
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- CN103743149B CN103743149B CN201410031876.2A CN201410031876A CN103743149B CN 103743149 B CN103743149 B CN 103743149B CN 201410031876 A CN201410031876 A CN 201410031876A CN 103743149 B CN103743149 B CN 103743149B
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Abstract
A kind of check valve of air-conditioning technical field controls the heat pump type air conditioning system of refrigerant flow direction in regenerator, comprise: compressor, indoor set, off-premises station, regenerator, some check valves, four-way change-over valve and capillary module, the present invention controls refrigerant flow direction in regenerator by check valve, under cooling condition, the low-temp low-pressure refrigerant generation backheat that the middle temperature high pressure refrigerant of off-premises station outlet and indoor set export, thus improve refrigerating capacity and air-conditioning Energy Efficiency Ratio; Under heating condition, the low-temp low-pressure refrigerant generation backheat that the middle temperature high pressure refrigerant of indoor set outlet and off-premises station export, thus improve heating capacity and air-conditioning Energy Efficiency Ratio.
Description
Technical field
What the present invention relates to is a kind of device of air-conditioning technical field, and specifically a kind of check valve controls the heat pump type air conditioning system of refrigerant flow direction in regenerator.
Background technology
In air-conditioning refrigeration system, in the high pressure before interpolation regenerator can make throttling, geothermal liquid and evaporimeter low-pressure low-temperature gas out carry out heat exchange in regenerator.The interpolation of regenerator can make refrigerant liquid degree of supercooling increase, and increases refrigerating capacity.The technology of adding regenerator in air-conditioner is shown in Chinese patent literature CN101979938A and CN101153760A.
Heat pump type air conditioner is the air-conditioner type of extensive use, and its key character is, the closed circuit of cold-producing medium can be switched by four-way change-over valve, realizes the transformation freezing and heat two kinds of patterns.There are four adapters four-way change-over valve outside, is respectively first and second adapter D, E, the 3rd and the 4th adapter C, S; There is a valve seat that can laterally slide inside to convert the flow direction of cold-producing medium in these four adapters.In cooling mode, D connection is taken over E and is communicated with, and C adapter is taken over S and is communicated with; High-pressure refrigerant enters from D pipe, and E pipe goes out; Low pressure refrigerant enters from C pipe, and S pipe goes out.In a heating mode, D connection is taken over C and is communicated with, and E adapter is taken over S and is communicated with; High-pressure refrigerant enters from D pipe, and C pipe goes out; Low pressure refrigerant enters from E pipe, and S pipe goes out.In cooling mode, indoor and outdoor is respectively evaporimeter and condenser; In a heating mode, indoor and outdoor machine is respectively condenser and evaporimeter.If be applied in heat pump type air conditioner by the regenerator technology shown in CN101979938A and CN101153760A simply, this technology can only be applicable to refrigeration or a kind of pattern in heating, then inapplicable under another pattern.Such as can realize geothermal liquid and evaporimeter low-pressure low-temperature gas out in the high pressure before throttling by the regenerator of refrigeration mode design and carry out heat exchange in regenerator; But when being switched to heating mode, originally evaporator outlet that section of pipe stream is compressor pressure high temperature hot gas out, and original condenser that section of pipe stream out is two-phase system cryogen after throttling, regenerator now directly heats making compressor high-temperature gas out the cold-producing medium entering evaporimeter, thus refrigerating capacity is declined.
Through finding the retrieval of prior art, Chinese patent literature CN103292523A, publication date 2013.09.11, disclose a kind of cold and hot two air-conditioning system processed with regenerator, comprise outdoor heat exchanger and indoor heat exchanger, between outdoor heat exchanger and indoor heat exchanger, connect a regenerator; When heating, by four-way change-over valve, flow of refrigerant direction is changed, indoor heat exchanger is made condenser and is used, and outdoor heat exchanger is made evaporimeter and used; The refrigerant gas that after refrigerant gas is sucked by compressor, pressurization becomes HTHP in indoor heat exchanger condensation heat release in becoming the liquid room air of warm high pressure heated through heat exchanger surface, reach the object that indoor temperature is raised, the liquid of middle temperature high pressure becomes the liquid of low-temp low-pressure again after expansion valve reducing pressure by regulating flow, the liquid of low-temp low-pressure becomes the gas compartment outer air of low-temp low-pressure through the cooled cooling of heat exchanger surface in outdoor heat exchanger, and the gas of low-temp low-pressure is sucked by compressor again.Although this technology solves the problem of adding regenerator in the air-conditioning system adopting expansion valve as the cold and hot double-standard of restricting element.But because the restricting element of heat pump type air conditioner all adopts capillary substantially, and comprise main capillary and secondary capillary.Its working method is, during refrigeration mode, cold-producing medium only through main capillary, and does not flow through secondary capillary; During heating mode, cold-producing medium first flows through auxiliary capillary, then flows through main capillary, and the flow direction in main capillary is contrary with during refrigeration mode.Therefore time as above-mentioned technology is applied directly to heat pump air conditioner, then cold-producing medium flows to the position of capillary and flow direction and is freezing and remaining unchanged under heating two kinds of operating modes, and this just can not meet heat pump air conditioner in refrigeration and the switching requirement heating two kinds of mode of operations.
In order to the seal and the stability that make the interpolation of regenerator not affect heat pump air conditioner, seal and the high element of stability should be used to control the flow direction of cold-producing medium in regenerator, prevent cold-producing medium from leaking when flowing through regenerator.Therefore, need to invent a kind of heat pump type air conditioning system being controlled refrigerant flow direction in regenerator by check valve.
Summary of the invention
The present invention is directed to prior art above shortcomings, the heat pump type air conditioning system that a kind of check valve controls refrigerant flow direction in regenerator is proposed, under cooling condition, the low-temp low-pressure refrigerant generation backheat that the middle temperature high pressure refrigerant of off-premises station outlet and indoor set export, thus improve refrigerating capacity and air-conditioning Energy Efficiency Ratio (EER, i.e. specified refrigeration or thermal power/specified refrigeration or hear rate); Under heating condition, the low-temp low-pressure refrigerant generation backheat that the middle temperature high pressure refrigerant of indoor set outlet and off-premises station export, thus improve heating capacity and EER.
The present invention is achieved by the following technical solutions, the present invention includes: compressor, indoor set, off-premises station, regenerator, some check valves, four-way change-over valve and capillary module, wherein: first to fourth adapter of four-way change-over valve is connected with the first interface of the gas exhaust piping of compressor, off-premises station, indoor set and regenerator respectively; The first interface of regenerator connects the 4th adapter of cross valve, second interface connects the negative terminal of capillary module by the first check valve, 3rd interface connects the anode of capillary module by the 3rd check valve, 4th interface connects the air inlet pipeline of compressor, 5th interface connects indoor set, and the 6th interface connects off-premises station; The anode of capillary module with connect the 4th check valve and off-premises station is pointed in direction between off-premises station; The negative terminal of capillary module with connect the second check valve and indoor set is pointed in direction between indoor set.
Described capillary module is made up of main capillary, auxiliary capillary and the 5th check valve, and wherein: main capillary and auxiliary capillary are series between the anode of capillary module and negative terminal successively, the 5th check valve deviates from main capillary with auxiliary capillary paralleling and direction.
Described regenerator is made up of three copper pipes, therefore regenerator has six interfaces can be connected with air-conditioning system miscellaneous part, and wherein can carry out heat exchange between any two copper pipes, but heat pump air conditioner is when running a certain operating mode, only has wherein two copper pipes to have cold-producing medium to flow through concurrent raw heat exchange.
The present invention relates to the cold cycling method of above-mentioned heat pump type air conditioning system, two kinds of circulations under being included in cooling condition and under heating condition, wherein:
Under cooling condition, the 4th check valve between off-premises station and capillary module anode and the first check valve between regenerator and capillary module negative terminal are all in closed condition, the high temperature and high pressure steam of compressor outlet is made successively to flow through off-premises station, regenerator, capillary, indoor set, finally flow through the air inlet pipe way that regenerator enters compressor, thus complete a kind of refrigeration cycle, wherein: the low-temp low-pressure refrigerant that the middle temperature high pressure refrigerant of off-premises station outlet and indoor set export carries out heat exchange, thus reaches backheat effect.
Under heating condition, the second check valve between indoor set and capillary module negative terminal and the 3rd check valve between regenerator and capillary anode are all in closed condition, the high temperature and high pressure steam of compressor outlet is made successively to flow through indoor set, regenerator, capillary, off-premises station, finally flow through the air inlet pipe way that regenerator enters compressor, thus complete one and heat circulation, wherein: the low-temp low-pressure refrigerant that the middle temperature high pressure refrigerant of indoor set outlet and off-premises station export carries out heat exchange, thus reaches backheat effect.
Technique effect
Compared with prior art, the technology of the present invention effect comprises: the first, the interpolation of regenerator does not affect capillary and normally runs.The second, regenerator normal backheat of equal energy under refrigeration and heating condition, and mutually do not interfere.Three, low price; Described heat pump air conditioner only used a regenerator, achieves the backheat under cold and hot two kinds of operating modes.Four, good stability, good seal performance.First heat pump air conditioner adopts check valve to control the flow direction of cold-producing medium, has good stability; Secondly heat pump air conditioner realizes the backheat under cold and hot two kinds of operating modes by a regenerator, effectively decreases solder joint, therefore has good sealing property.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
In figure: 1 compressor, 2 indoor sets, 3 off-premises stations, 4 main capillaries, 5 regenerators, 6 first check valves, 7 second check valves, 8 the 3rd check valves, 9 the 4th check valves, 10 auxiliary capillaries, 11 four-way change-over valves, 12 the 5th check valves; In figure, solid arrow represents the flow direction of cold-producing medium under cooling condition, and dotted arrow represents the flow direction of cold-producing medium under heating condition.
Fig. 2 is a kind of profile of regenerator structure.
Fig. 3 is another kind of regenerator structure profile.
Detailed description of the invention
Elaborate to embodiments of the invention below, the present embodiment is implemented under premised on technical solution of the present invention, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
As shown in Figure 1, the present embodiment comprises: compressor 1, indoor set 2, off-premises station 3, regenerator 5, some check valves 6 ~ 9, four-way change-over valve 11 and capillary module, wherein: first to fourth adapter of four-way change-over valve 11 is connected with the first interface a of the gas exhaust piping of compressor 1, off-premises station 3, indoor set 2 and regenerator 5 respectively; The first interface a of regenerator 5 connects the 4th adapter S of cross valve 11, second interface b connects the negative terminal of capillary module by the first check valve 6,3rd interface c connects the anode of capillary module by the 3rd check valve 8,4th interface d connects the air inlet pipeline of compressor 1,5th interface e connects indoor set the 2, six interface f and connects off-premises station 3; The anode of capillary module with connect the 4th check valve 9 and off-premises station is pointed in direction between off-premises station; The negative terminal of capillary module with connect the second check valve 7 and indoor set is pointed in direction between indoor set.
Described capillary module is made up of main capillary 4, auxiliary capillary 10 and the 5th check valve 12, wherein: main capillary 4 and auxiliary capillary 10 are series between the anode of capillary module and negative terminal successively, the 5th check valve 12 is in parallel with auxiliary capillary 10 and direction deviates from main capillary 4.
Described regenerator 5 is made up of three copper pipes, and one of the structural shape that realizes of this regenerator is: the nested two auxiliary copper pipes of main inside pipe casing, and main sleeve pipe, arbitrary auxiliary copper pipe contact with each other between any two, and regenerator cross section as shown in Figure 2; Two of the structural shape that realizes of this regenerator is: three copper pipes weld side by side, and regenerator cross section is three mutual circumscribed circles, and regenerator cross section as shown in Figure 3.
Above-mentioned arbitrary structure makes can carry out heat exchange between any two copper pipes in regenerator 5, but heat pump air conditioner is when running a certain operating mode, only has wherein two copper pipes to have cold-producing medium to flow through concurrent raw heat exchange.
First to fourth described check valve 6 ~ 9 achieves cold-producing medium can only from regenerator 5 single flow direction capillary module, and by capillary module single flow direction indoor set 2 or off-premises station 3.
The cold cycling method of this air-conditioning system, two kinds of circulations under being included in cooling condition and under heating condition, wherein:
Under cooling condition, according to check valve installation direction in Fig. 1, the first check valve 6 and the 4th check valve 9 are closed and the second check valve 7 and the 3rd check valve 8 are opened.According to the refrigerant flow direction in Fig. 1 represented by solid arrow, the flow direction of cold-producing medium is as follows: the 3rd adapter C of the first adapter D of compressor 1 → four-way change-over valve 11 and the 6th interface f of the second adapter E → off-premises station 3 → regenerator 5 and the 3rd interface c → the 3rd check valve 8 → main capillary the 4 → five check valve 12 → the second check valve 7 → indoor set 2 → four-way change-over valve 11 and first interface a of the 4th adapter S → regenerator 5 and the air inlet pipe way of the 4th interface d → compressor 1.Wherein: the middle temperature high pressure refrigerant that off-premises station 3 exports and the low-temp low-pressure refrigerant that indoor set 2 exports carry out heat exchange, thus reach backheat effect.
Under heating condition, according to check valve installation direction in Fig. 1, the first check valve 6 and the 4th check valve 9 are opened and the second check valve 7 and the 3rd check valve 8 are closed.According to the refrigerant flow direction in Fig. 1 represented by dotted arrow, refrigerant flow direction is as follows: the second adapter E of the first adapter D of compressor 1 → four-way change-over valve 11 and the 5th interface e of the 3rd adapter C → indoor set 2 → regenerator 5 and second interface b → the first check valve 6 → auxiliary capillary 10 → main capillary the 4 → four check valve 9 → off-premises station 3 → four-way change-over valve 11 and first interface a of the 4th adapter S → regenerator 5 and the air inlet pipe way of the 4th interface d → compressor 1.Wherein: the middle temperature high pressure refrigerant that indoor set 2 exports and the low-temp low-pressure refrigerant that off-premises station 3 exports carry out heat exchange, thus reach backheat effect.
Claims (6)
1. a check valve controls the heat pump type air conditioning system of refrigerant flow direction in regenerator, it is characterized in that, comprise: compressor, indoor set, off-premises station, regenerator, some check valves, four-way change-over valve and capillary module, wherein: first to fourth adapter of four-way change-over valve is connected with the first interface of the gas exhaust piping of compressor, off-premises station, indoor set and regenerator respectively; The first interface of regenerator connects the 4th adapter of cross valve, second interface connects the negative terminal of capillary module by the first check valve, 3rd interface connects the anode of capillary module by the 3rd check valve, 4th interface connects the air inlet pipeline of compressor, 5th interface connects indoor set, and the 6th interface connects off-premises station; The anode of capillary module with connect the 4th check valve and off-premises station is pointed in direction between off-premises station; The negative terminal of capillary module with connect the second check valve and indoor set is pointed in direction between indoor set; First to fourth described check valve achieves cold-producing medium can only from regenerator single flow direction capillary module, and by capillary module single flow direction indoor set or off-premises station.
2. heat pump type air conditioning system according to claim 1, it is characterized in that, described capillary module is made up of main capillary, auxiliary capillary and the 5th check valve, wherein: main capillary and auxiliary capillary are series between the anode of capillary module and negative terminal successively, the 5th check valve deviates from main capillary with auxiliary capillary paralleling and direction.
3. heat pump type air conditioning system according to claim 1, it is characterized in that, described regenerator is made up of three copper pipes, and wherein can carry out heat exchange between any two copper pipes, and when described heat pump type air conditioning system is at arbitrary operating condition, only wherein two copper pipes have cold-producing medium to flow through concurrent raw heat exchange.
4. the heat pump type air conditioning system according to claim 1 or 3, is characterized in that, one of the structural shape that realizes of described regenerator is: the nested two auxiliary copper pipes of main inside pipe casing, main sleeve pipe, arbitrary auxiliary copper pipe contact with each other between any two.
5. the heat pump type air conditioning system according to claim 1 or 3, is characterized in that, two of the structural shape that realizes of described regenerator is: three copper pipes weld side by side, and regenerator cross section is three mutual circumscribed circles.
6. the cold cycling method of heat pump type air conditioning system according to above-mentioned arbitrary claim, is characterized in that, two kinds of circulations under being included in cooling condition and under heating condition, wherein:
Under cooling condition, first check valve and the 4th closed check valve and the second check valve and the 3rd check valve are opened, the flow direction of cold-producing medium is as follows: the 3rd of the first adapter of compressor → four-way change-over valve and the 6th interface of the second adapter → off-premises station → regenerator and the 3rd interface → the 3rd check valve → main capillary → the 5th check valve → the second check valve → indoor set → four-way change-over valve is taken over and the first interface of the 4th adapter → regenerator and the air inlet pipe way of four interface → compressor, wherein: the low-temp low-pressure refrigerant that the middle temperature high pressure refrigerant of off-premises station outlet and indoor set export carries out heat exchange, thus reach backheat effect,
Under heating condition, first check valve and the 4th check valve are opened and the second check valve and the 3rd closed check valve, refrigerant flow direction is as follows: second of the first adapter of compressor → four-way change-over valve and the 5th interface of the 3rd adapter → indoor set → regenerator and the second interface → the first check valve → auxiliary capillary → main capillary → four check valve → off-premises station → four-way change-over valve is taken over and the first interface of the 4th adapter → regenerator and the air inlet pipe way of four interface → compressor, wherein: the low-temp low-pressure refrigerant that the middle temperature high pressure refrigerant of indoor set outlet and off-premises station export carries out heat exchange, thus reach backheat effect.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410031876.2A CN103743149B (en) | 2014-01-23 | 2014-01-23 | Check valve controls the heat pump type air conditioning system of refrigerant flow direction in regenerator |
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| CN201410031876.2A CN103743149B (en) | 2014-01-23 | 2014-01-23 | Check valve controls the heat pump type air conditioning system of refrigerant flow direction in regenerator |
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| CN103743149B true CN103743149B (en) | 2016-01-13 |
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| CN111256385A (en) * | 2018-11-30 | 2020-06-09 | 广东美芝精密制造有限公司 | Refrigerating device |
| CN113700894A (en) * | 2020-05-20 | 2021-11-26 | 浙江盾安机械有限公司 | Four-way reversing valve |
| CN113819673A (en) * | 2021-09-28 | 2021-12-21 | 澳柯玛股份有限公司 | Variable flow reversing defrosting system and method for refrigerator and freezer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5822858A (en) * | 1981-08-03 | 1983-02-10 | 株式会社東芝 | Differential pressure automatic changeover type three-way valve |
| JPH10332212A (en) * | 1997-06-02 | 1998-12-15 | Toshiba Corp | Refrigeration cycle of air conditioner |
| JP2001174092A (en) * | 1999-12-20 | 2001-06-29 | Fujitsu General Ltd | Air conditioner |
| KR100496376B1 (en) * | 2003-03-31 | 2005-06-22 | 한명범 | Improvement system of energy efficiency for use in a refrigeration cycle |
| CN103292523B (en) * | 2013-05-14 | 2016-05-04 | 西安交通大学 | A kind of cold and hot two air-conditioning systems processed with regenerator |
| CN103423815B (en) * | 2013-08-31 | 2015-07-29 | 湖南科技大学 | A kind of Solution-assistant energy-storage domestic air conditioner |
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