CN203837349U - Air conditioning system - Google Patents

Air conditioning system Download PDF

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Publication number
CN203837349U
CN203837349U CN201420241985.2U CN201420241985U CN203837349U CN 203837349 U CN203837349 U CN 203837349U CN 201420241985 U CN201420241985 U CN 201420241985U CN 203837349 U CN203837349 U CN 203837349U
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China
Prior art keywords
heat exchanger
outdoor heat
port
check valve
throttling
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Active
Application number
CN201420241985.2U
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Chinese (zh)
Inventor
周中华
李潇
刘冰军
韩雷
吴会丽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Priority to CN201420241985.2U priority Critical patent/CN203837349U/en
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Abstract

The utility model provides an air conditioning system. The air conditioning system comprises a throttling and guiding assembly arranged between an indoor heat exchanger and outdoor heat exchangers. The throttling and guiding assembly controls high-temperature gaseous refrigerating fluid to be selectively distributed under different modes of circulation and enter the different heat exchangers. In the refrigeration process, the throttling and guiding assembly enables the refrigerating fluid to be throttled after passing through the first outdoor heat exchanger and the second outdoor heat exchanger. In the heating process, the throttling and guiding assembly enables the refrigerating fluid to be split, part of the refrigerating fluid enters the first outdoor heat exchanger, part of the refrigerating fluid enters the second outdoor heat exchanger, and finally, all the refrigerating fluid enters the first outdoor heat exchanger. The first port of the first outdoor heat exchanger is communicated with a compressor, and the second port of the first outdoor heat exchanger is communicated with the throttling and guiding assembly. The first port and the second port of the second outdoor heat exchanger are communicated with the throttling and guiding assembly, and the second port of the second outdoor heat exchanger is communicated to a pipeline between the compressor and the indoor heat exchanger at the same time. The frosting problem in the heating process is solved.

Description

Air-conditioning system
Technical field
The utility model relates to field of air conditioning, especially, relates to a kind of air-conditioning system.
Background technology
Defrosting is the comparatively serious problem that current heat pump machine faces.Frosting affects the stable operation of air-conditioning; Conventional Defrost mode, for switching refrigeration mode, stops inner blower, and indoor temperature declines, and users'comfort is had to very large impact.System orientation, can reduce frosting, optimize defrosting effect is very important Technology design.
Improve heat pump machine technology and generally have both direction: accelerate molten frost for one; Another one reduces frosting exactly.By improving the hydrophily of heat exchanger fin, improve the methods such as heat exchanger heat exchange area and all can reduce frosting degree.But further design may just need to increase external heat source (bypass defrosting, return-air heating).
Utility model content
The utility model object is to provide a kind of air-conditioning system, the technical problem of frosting while heating to solve.
For achieving the above object, the utility model provides a kind of air-conditioning system, comprises connected successively compressor, indoor heat exchanger and outdoor heat exchanger; Outdoor heat exchanger comprises the first outdoor heat exchanger and the second outdoor heat exchanger; Also comprise throttling guidance set, be arranged between indoor heat exchanger and outdoor heat exchanger, throttling guidance set control high-temperature gas cold-producing medium optionally carries out the distribution of cold-producing medium under different mode circulation, enters different heat exchangers; When refrigeration, throttling guidance set makes cold-producing medium successively by the first outdoor heat exchanger and the then throttling of the second outdoor heat exchanger; While heating, throttling guidance set makes cold-producing medium shunting, and a part enters the first outdoor heat exchanger, and a part enters the second outdoor heat exchanger, and final ownership cryogen enters the first outdoor heat exchanger; The first port of the first outdoor heat exchanger is connected with compressor, and the second port of the first outdoor heat exchanger is connected with throttling guidance set; The first port of the second outdoor heat exchanger and the second port are all connected with throttling guidance set, and the second port of the second outdoor heat exchanger is connected on the pipeline between compressor and indoor heat exchanger simultaneously.
Further, throttling guidance set comprises the first check valve, the second check valve the 3rd check valve, the 4th check valve, the 5th check valve and restricting element; Throttling guidance set enters in the first outdoor heat exchanger or the second outdoor heat exchanger by the first branch road, and the cold-producing medium after throttling guidance set control throttling cooling enters in the second outdoor heat exchanger or the first outdoor heat exchanger by the second branch road; The import of the 4th check valve is connected with the first port of indoor heat exchanger; The outlet of the 4th check valve is connected with the first branch road and the second branch road respectively.
Further, on the first branch road, be disposed with restricting element and the first check valve.
Further, the second port of the second outdoor heat exchanger is connected on the pipeline between compressor and indoor heat exchanger and is provided with magnetic valve.
Further, the first port of the second outdoor heat exchanger and the second port are by the 3rd check valve one-way conduction.
Further, the second port of the first outdoor heat exchanger and the second port of the second outdoor heat exchanger are by the second check valve one-way conduction.
Further, the first port of the second outdoor heat exchanger and the first port of indoor heat exchanger are connected and pass through the 5th check valve one-way conduction.
Further, between the first port of the second outdoor heat exchanger and the import of the 5th check valve, be provided with restricting element.
The utlity model has following beneficial effect:
The utility model provides a kind of air-conditioning system, outdoor heat exchanger is divided into two parts, by throttling guidance set, make heat pump type air conditioner in the time that operation heats, improve the Temperature Distribution of the heat exchanger surface of frosting, when realizing frosting, heat exchanger heats defrosting.Realize sustainable heating.Reduce defrost number of times.Both ensure indoor comfort, also improved the heat exchange amount under machine system low temperature condition.
Except object described above, feature and advantage, the utility model also has other object, feature and advantage.Below with reference to figure, the utility model is described in further detail.
Brief description of the drawings
The accompanying drawing that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the schematic diagram according to air-conditioning system of the present utility model;
Fig. 2 is the heating operation schematic diagram according to air-conditioning system of the present utility model; And
Fig. 3 is the refrigerating operaton schematic diagram according to air-conditioning system of the present utility model.
Reference numeral in accompanying drawing is as follows: 10, compressor; 20, indoor heat exchanger; 30, outdoor heat exchanger; 31, the first outdoor heat exchanger; 32, the second outdoor heat exchanger; 41, the first check valve; 42, the second check valve; 43, the 3rd check valve; 44, the 4th check valve; 45, the 5th check valve; 46, restricting element; 50, magnetic valve.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
Referring to Fig. 1 to Fig. 3, according to air-conditioning system of the present utility model, comprise connected successively compressor 10, indoor heat exchanger 20 and outdoor heat exchanger 30; Outdoor heat exchanger 30 comprises the first outdoor heat exchanger 31 and the second outdoor heat exchanger 32; 2 to 3 U pipes of the super cooled sect of outdoor heat exchanger 30 are separable into heating part _ i.e. the second outdoor heat exchanger 32 in the utility model.Also comprise throttling guidance set, be arranged between indoor heat exchanger 20 and outdoor heat exchanger 30, throttling guidance set control high-temperature gas cold-producing medium enters in the first outdoor heat exchanger 31 and the second outdoor heat exchanger 32 by the first branch road direction; Or control cold-producing medium and enter by the second branch road the cold-producing medium that converges again indoor heat exchanger part after the second outdoor heat exchanger 32 and enter in the first outdoor heat exchanger 31; The first port of the first outdoor heat exchanger 31 is connected with compressor 10, and the second port of the first outdoor heat exchanger 31 is connected with throttling guidance set; The first port of the second outdoor heat exchanger 32 and the second port are all connected with throttling guidance set, and the second port of the second outdoor heat exchanger 32 is connected on the pipeline between compressor 10 and indoor heat exchanger 20 simultaneously.Outdoor heat exchanger is divided into two parts by air-conditioning system, and the refrigerant flow direction that enters outdoor heat exchanger 30 is controlled, and realizes the heat exchange area difference of freezing, heating heat exchanger in situation, and the function of realization is also different.By throttling guidance set, make heat pump type air conditioner in the time that operation heats, improve frosting environment, when realizing frosting, heat exchanger heats defrosting.Realize sustainable heating.Reduce defrost number of times.Both ensure indoor comfort, also improved the heat exchange amount under machine system low temperature condition.
Referring to Fig. 1 to Fig. 3, throttling guidance set comprises the first check valve 41, the second check valve 42 the 3rd check valve 43, the 4th check valve 44, the 5th check valve 45 and restricting element 46; The first check valve 41 is connected between restricting element and outdoor heat exchanger 30 top outlets; The second check valve 42 is connected between outdoor heat exchanger 30 top outlets and outdoor heat exchanger 30 lower part outlets.The 3rd check valve 43 connects between outdoor heat exchanger 30 lower inlet and lower part outlet.The second check valve 42 and the 3rd check valve 43 parallel joins are in the exit of outdoor heat exchanger 30 bottoms.The 4th check valve 44 is connected between indoor heat exchanger 20 and outdoor heat exchanger 30 lower inlet.Restricting element 46 is connected between the 4th check valve 44 and the first check valve 41.The outlet that the 5th check valve 45 is connected between restricting element 46 and indoor heat exchanger 20 and direction and the 4th check valve 44 are rightabout and the 5th check valve 45 is connected to the import department of the 4th check valve 44.The import of the 4th check valve 44 is connected with the first port of indoor heat exchanger 20; The outlet of the 4th check valve 44 is connected with the first branch road and the second branch road respectively.On the first branch road, be disposed with restricting element 46 and the first check valve 41.The second port of the second outdoor heat exchanger 32 is connected on the pipeline between compressor 10 and indoor heat exchanger 20 and is provided with magnetic valve 50.The first port of the second outdoor heat exchanger 32 and the second port are by the 3rd check valve 43 one-way conductions.The second port of the second port of the first outdoor heat exchanger 31 and the second outdoor heat exchanger 32 passes through the second check valve 42 one-way conductions.The first port of the second outdoor heat exchanger 32 is connected with the first port of indoor heat exchanger 20 and passes through the 5th check valve 45 one-way conductions.Between the first port of the second outdoor heat exchanger 32 and the import of the 5th check valve 45, be provided with restricting element 46.
Throttling guidance set of the present utility model, has realized: the cold-producing medium that enters outdoor heat exchanger 30 while heating is divided into two parts, and a part is high-temperature gas cold-producing medium, and a part is the cold-producing medium after throttling cooling.Low-temperature refrigerant evaporates on the top of heat exchanger and absorbs atmosphere heat.Water in air runs into heat exchanger upper face cryogenic temperature condensation Cheng Shui, and temperature is formed frost at heat exchanger surface water after further reducing; But, because high temperature refrigerant is passed into heat exchanger bottom-heated heat exchanger, allow heat heat from the bottom up.Due to the existence of this part high-temperature heat-exchanging, heat exchanger top frosting degree is reduced.Heat of high temperature can heat defrosting always.In frosting also in defrosting.Described high-temperature exhaust air is to pass into outdoor heat exchanger 30 bottom heating by bypass solenoid valve 50.
Referring to Fig. 1 to Fig. 3, outdoor heat exchanger 30 is divided into two parts, the respectively corresponding export and import of every part.Outdoor heat exchanger 30 upper inlet are communicated with compressor.Outdoor heat exchanger 30 lower part outlets are communicated with bypass branch road, are connected with compressor air-discharging end.On this branch road, magnetic valve 50 is controlled and is cut-off.Referring to Fig. 2, when heating mode operation, reduce frosting degree, realize the sustainable circulation that heats.Magnetic valve 50 conductings, cross valve is in heating mode.
Cold-producing medium out flows to indoor heat exchanger 20 through cross valve from exhaust outlet of compressor, entering before indoor heat exchanger 20, cold-producing medium is entered by 50 points of part of refrigerant of bypass solenoid valve in the bottom U pipe of outdoor heat exchanger 30, heat of high temperature heats this part heat exchanger, and heat up transmits from bottom along outdoor heat exchanger 30 bottoms.Enter the part heating clamber inner room of indoor heat exchanger 20, this part cold-producing medium converges before restricting element 46 with the cold-producing medium of bypass heat release after the 4th check valve 44 subsequently.Being passed subsequently the first check valve 41 imports outdoor heat exchanger 30 tops and completes cold-producing medium heating process---evaporation process.Gaseous refrigerant after heating enters compressor.Under this pattern, the second check valve 42, the 3rd check valve 43, the 5th check valve 45 are in blocking state.
Referring to Fig. 3, under refrigeration mode, outdoor heat exchanger entirety, for heat exchange, does not affect heat exchange area.Magnetic valve 50 cuts out, and cross valve switches to refrigeration mode.
High-temperature high-pressure refrigerant gaseous state enters in outdoor heat exchanger 30 upper spaces and carries out heat exchange through cross valve from compressor is discharged, and the cold-producing medium after cooling enters the cold heat release of the outdoor heat exchanger 30 further mistake in bottom by the second check valve 42.Carry out reducing pressure by regulating flow through restricting element 46 subsequently, be directed to indoor set by the 5th check valve 45 and carry out endothermic process---evaporation process.Absorb room heat, reduce room temperature.Cold-producing medium is got back to compressor and is completed circulation subsequently.Under this pattern, the first check valve 41, the 3rd check valve 43, the 4th check valve 44 are in blocking state.
As can be seen from the above description, the utility model the above embodiments have realized following technique effect:
The utility model provides a kind of air-conditioning system, the cold-producing medium that enters outdoor heat exchanger is divided into two parts according to stream under different mode, by throttling guidance set, make heat pump type air conditioner in the time that operation heats, improve frosting environment, when realizing frosting, heat exchanger heats defrosting.Realize sustainable heating.Reduce defrost number of times.Both ensure indoor comfort, also improved the heat exchange amount under machine system low temperature condition.The utility model proposes the outer machine frosting degree of the favourable minimizing of connected mode of heat exchanger.During on kind of refrigeration cycle, do not affect heat exchanger area.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims (8)

1. an air-conditioning system, is characterized in that, comprises connected successively compressor (10), indoor heat exchanger (20) and outdoor heat exchanger (30);
Described outdoor heat exchanger (30) comprises the first outdoor heat exchanger (31) and the second outdoor heat exchanger (32);
Also comprise throttling guidance set, be arranged between described indoor heat exchanger (20) and described outdoor heat exchanger (30), described throttling guidance set control high-temperature gas cold-producing medium optionally carries out the distribution of cold-producing medium under different mode circulation, enters different heat exchangers; When refrigeration, described throttling guidance set makes cold-producing medium successively by described the first outdoor heat exchanger (31) and then throttling of described the second outdoor heat exchanger (32); While heating, throttling guidance set makes cold-producing medium shunting, a part enters described the first outdoor heat exchanger (31), and a part enters described the second outdoor heat exchanger (32), and final ownership cryogen enters described the first outdoor heat exchanger (31);
The first port of described the first outdoor heat exchanger (31) is connected with described compressor (10), and the second port of described the first outdoor heat exchanger (31) is connected with described throttling guidance set;
The first port of described the second outdoor heat exchanger (32) and the second port are all connected with described throttling guidance set, and the second port of described the second outdoor heat exchanger (32) is connected on the pipeline between described compressor (10) and described indoor heat exchanger (20) simultaneously.
2. air-conditioning system according to claim 1, is characterized in that,
Described throttling guidance set comprises the first check valve (41), the second check valve (42) the 3rd check valve (43), the 4th check valve (44), the 5th check valve (45) and restricting element (46);
Described throttling guidance set enters in described the first outdoor heat exchanger (31) or described the second outdoor heat exchanger (32) by the first branch road, and the cold-producing medium after described throttling guidance set control throttling cooling enters in described the second outdoor heat exchanger (32) or described the first outdoor heat exchanger (31) by the second branch road;
The import of described the 4th check valve (44) is connected with the first port of described indoor heat exchanger (20); The outlet of described the 4th check valve (44) is connected with the first branch road and described the second branch road respectively.
3. air-conditioning system according to claim 2, is characterized in that,
On described the first branch road, be disposed with described restricting element (46) and described the first check valve (41).
4. air-conditioning system according to claim 2, is characterized in that,
The second port of described the second outdoor heat exchanger (32) is connected on the pipeline between described compressor (10) and described indoor heat exchanger (20) and is provided with magnetic valve (50).
5. air-conditioning system according to claim 2, is characterized in that,
The first port of described the second outdoor heat exchanger (32) and the second port are by described the 3rd check valve (43) one-way conduction.
6. air-conditioning system according to claim 2, is characterized in that,
The second port of the second port of described the first outdoor heat exchanger (31) and described the second outdoor heat exchanger (32) is by described the second check valve (42) one-way conduction.
7. air-conditioning system according to claim 6, is characterized in that,
The first port of described the second outdoor heat exchanger (32) is connected with the first port of described indoor heat exchanger (20) and passes through described the 5th check valve (45) one-way conduction.
8. air-conditioning system according to claim 7, is characterized in that,
Between the import of the first port of described the second outdoor heat exchanger (32) and described the 5th check valve (45), be provided with restricting element (46).
CN201420241985.2U 2014-05-12 2014-05-12 Air conditioning system Active CN203837349U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420241985.2U CN203837349U (en) 2014-05-12 2014-05-12 Air conditioning system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420241985.2U CN203837349U (en) 2014-05-12 2014-05-12 Air conditioning system

Publications (1)

Publication Number Publication Date
CN203837349U true CN203837349U (en) 2014-09-17

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Application Number Title Priority Date Filing Date
CN201420241985.2U Active CN203837349U (en) 2014-05-12 2014-05-12 Air conditioning system

Country Status (1)

Country Link
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103954082A (en) * 2014-05-12 2014-07-30 珠海格力电器股份有限公司 Air-conditioning system
US10941955B2 (en) 2017-10-27 2021-03-09 Dometic Sweden Ab Systems, methods, and apparatuses for providing communications between climate control devices in a recreational vehicle
US11254183B2 (en) 2017-08-25 2022-02-22 Dometic Sweden Ab Recreational vehicle, cooling device, controlling system and method for controlling the cooling device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103954082A (en) * 2014-05-12 2014-07-30 珠海格力电器股份有限公司 Air-conditioning system
CN103954082B (en) * 2014-05-12 2017-01-25 珠海格力电器股份有限公司 Air-conditioning system
US11254183B2 (en) 2017-08-25 2022-02-22 Dometic Sweden Ab Recreational vehicle, cooling device, controlling system and method for controlling the cooling device
US10941955B2 (en) 2017-10-27 2021-03-09 Dometic Sweden Ab Systems, methods, and apparatuses for providing communications between climate control devices in a recreational vehicle

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