CN202792469U - Air-conditioning system - Google Patents
Air-conditioning system Download PDFInfo
- Publication number
- CN202792469U CN202792469U CN2012204267376U CN201220426737U CN202792469U CN 202792469 U CN202792469 U CN 202792469U CN 2012204267376 U CN2012204267376 U CN 2012204267376U CN 201220426737 U CN201220426737 U CN 201220426737U CN 202792469 U CN202792469 U CN 202792469U
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- Prior art keywords
- heat exchanger
- air
- communicated
- compressor
- conditioning system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The utility model discloses an air-conditioning system. The air-conditioning system comprises an outdoor heat exchanger, an indoor heat exchanger, an indoor fan and a heat exchanging tube, wherein one end of the outdoor heat exchanger is communicated with the indoor heat exchanger through a first connecting pipe, a capillary pipe, a second connecting pipe and an electronic expansion valve which are connected in sequence; the heat exchanging pipe is arranged between the indoor heat exchanger and the indoor fan; one end of the heat exchanging pipe is provided with an air inlet pipe which is communicated with the first connecting pipe; the air inlet pipe is provided with an electromagnetic valve; and the other end of the heat exchanging pipe is provided with an air outlet pipe which is communicated with the second connecting pipe. According to the air-conditioning system, the temperature of the indoor heat exchanger is raised, so that the indoor heat exchanger can be prevented from freezing, and the heat exchanging effect is ensured. Moreover, a time interval during which the temperature of the indoor heat exchanger is lower than zero can be shortened effectively, so that the times when the indoor heat exchanger enters a low-temperature protection state are reduced, and a first compressor can be better protected.
Description
Technical field
The utility model relates to air-conditioning technical field, particularly a kind of air-conditioning system.
Background technology
Existing multi-gang air-conditioner heat pump is generally better owing to the system condensing effect under the refrigeration small load condition, and condensing pressure is lower, so compressor output is relatively large, causes system's evaporating pressure lower.Thereby cause indoor heat exchanger to enter frequently the low-temperature protection state, the start-stop of high frequent, and because system height pressure reduction is less, lubricating oil by compressor is a large amount of discharge after, can't return smoothly final so that compressor oil starvation and damaging.
Current; the multi-gang air-conditioner heat pump of Some Enterprises is for solving the problem of surveying the frequent low-temperature protection of heat exchanger in the system under the refrigeration small load condition; generally realize by changing control program: detect indoor heat exchanger middle part temperature T 2; if T2 surpasses T less than the zero degree duration; system enters the low-temperature protection state; by increasing the size of T, prolong the time of normal refrigeration, reduce the number of times of low-temperature protection.Under the refrigeration small load condition, increase the time of normal refrigeration, may cause the surface temperature of indoor heat exchanger to cross low even frosting, affect heat transfer effect.
The utility model content
Main purpose of the present utility model is to provide a kind of air-conditioning system, is intended to promote the temperature of indoor heat exchanger, prevents the indoor heat exchanger frosting, and affects its heat transfer effect.
To achieve these goals, the utility model provides a kind of air-conditioning system to comprise outdoor heat exchanger, indoor heat exchanger, indoor fan and heat exchanger tube, wherein, an end of outdoor heat exchanger is communicated with indoor heat exchanger by the first tube connector, capillary, the second tube connector, the electric expansion valve that connects successively; Heat exchanger tube is arranged between described indoor heat exchanger and the indoor fan, and an end of this heat exchanger tube is provided with the air inlet pipe that is communicated with described the first tube connector, and this air inlet pipe is provided with magnetic valve, and the other end of this heat exchanger tube is provided with the escape pipe that is communicated with the second tube connector.
Preferably, described escape pipe is provided with the check valve that flows into described the second tube connector for the control refrigerant from described air inlet pipe through escape pipe.
Preferably, described air-conditioning system also comprises controller, and this controller and the electrical connection of described magnetic valve are to control opening or closing of this magnetic valve.
Preferably, described outdoor heat exchanger is air cooling heat exchanger or water cooling heat exchanger.
Preferably, described air-conditioning system also comprises cross valve and the first compressor, and this first compressor has blast pipe and muffler; This cross valve has exhaust end, suction end, condenser end and evaporator end, and wherein exhaust end is communicated with described blast pipe, and suction end is communicated with described muffler; One end of described outdoor heat exchanger is communicated with described the first tube connector, and the other end is communicated with described condenser end; One end of described indoor heat exchanger is communicated with described electric expansion valve, and the other end is communicated with described evaporator end.
Preferably, also be connected with low pressure tank for separating of gaseous coolant and liquid refrigerants between described muffler and the described cross valve.
Preferably, described air-conditioning system also comprises the second compressor of at least one and described the first compressor parallel.
Preferably, described the first compressor is frequency-changeable compressor or constant speed compressor.
Preferably, described the second compressor is frequency-changeable compressor or constant speed compressor.
The utility model, owing between indoor fan and indoor heat exchanger, be provided with heat exchanger tube, so that the air that indoor fan blows to indoor heat exchanger at first with heat exchanger tube in refrigerant carry out heat exchange, thereby improved the temperature of carrying out the air of heat exchange with indoor heat exchanger, and then improved the temperature of indoor heat exchanger.The air-conditioning system that the utility model provides can prevent the indoor heat exchanger frosting, and affect its heat transfer effect owing to improved the temperature of indoor heat exchanger.Can effectively reduce in addition the temperature of indoor heat exchanger less than the time of zero degree, enter the number of times of low-temperature protection state so reduced indoor heat exchanger, so can protect better the first compressor.
Description of drawings
Fig. 1 is the structural representation of the utility model air-conditioning system preferred embodiment.
The realization of the utility model purpose, functional characteristics and advantage are described further with reference to accompanying drawing in connection with embodiment.
The specific embodiment
Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
With reference to Fig. 1, Fig. 1 is the structural representation of the utility model air-conditioning system preferred embodiment.The air-conditioning system that present embodiment provides, comprise outdoor heat exchanger 10, indoor heat exchanger 20, indoor fan 30 and heat exchanger tube 40, wherein, an end of this outdoor heat exchanger 10 is communicated with indoor heat exchanger 20 by the first tube connector 101, capillary 102, the second tube connector 103, the electric expansion valve 50 that connects successively; Heat exchanger tube 40 is arranged between indoor heat exchanger 20 and the indoor fan 30, and an end of this heat exchanger 40 is provided with the air inlet pipe 401 that is communicated with the first tube connector 101, and the other end of this heat exchanger tube 40 is provided with the escape pipe 402 that is communicated with the second tube connector 103.
Particularly, air-conditioning system also comprises cross valve 60, the first compressor 70, and this first compressor 70 has blast pipe 701 and muffler 702; This cross valve 60 has exhaust end D, suction end S, condenser end C and evaporator end E, and wherein exhaust end D is communicated with blast pipe 701, and suction end S is communicated with muffler 702; One end of outdoor heat exchanger 10 is communicated with the first tube connector 101, and the other end is communicated with condenser end C; One end of indoor heat exchanger 20 is communicated with electric expansion valve 50, and the other end is communicated with evaporator end E.
In the present embodiment, above-mentioned air-conditioning system also comprises the controller (not shown), this controller and above-mentioned magnetic valve 403 and cross valve 60 electrical connections.
When the air-conditioning system refrigerating operaton, the exhaust end D and the condenser end C that are controlled this magnetic valve 60 by controller are communicated with, and suction end S and evaporator end E are communicated with, and will control magnetic valve 403 with Time Controller and open.Refrigerant will flow to outdoor heat exchanger 10 through cross valve 60 from the blast pipe 701 of the first compressor 70 and carry out heat exchange this moment; Then flow into the first tube connector 101, because capillary 102 has throttling action, so that the part refrigerant in the first tube connector 101 flows into heat exchanger tube 40 through air inlet pipe 401 and magnetic valve 403, and flow into the second tube connector 103 from escape pipe 402; Return the first compressor 70 finally by electric expansion valve 50, indoor heat exchanger 20, muffler 702.
When the air-conditioning system heating operation, exhaust end D and the evaporator end E of controller control cross valve 60 are communicated with, and suction end S and condenser end C are communicated with, and control simultaneously magnetic valve 403 and close.Refrigerant in the second tube connector 103 will only flow in the first tube connector 101 by capillary 102, and return the first compressor 70 by outdoor heat exchanger 10 and cross valve 60.
The utility model, owing between indoor fan 30 and indoor heat exchanger, be provided with heat exchanger tube 40, so that the air that indoor fan 30 blows to indoor heat exchanger 20 at first with heat exchanger tube 40 in refrigerant carry out heat exchange, thereby improved with indoor heat exchanger 30 and carried out the temperature of the air of heat exchange, and then improved the temperature of indoor heat exchanger 20.The air-conditioning system that the utility model provides can prevent the indoor heat exchanger frosting, and affect its heat transfer effect owing to improved the temperature of indoor heat exchanger 20.Can effectively reduce in addition the temperature of indoor heat exchanger 20 less than the time of zero degree, enter the number of times of low-temperature protection state so reduced indoor heat exchanger, so can protect better the first compressor 70.
Should be noted that above-mentioned outdoor heat exchanger 10 is air cooling heat exchanger or water cooling heat exchanger.
Further, above-mentioned escape pipe 402 is provided with check valve 80, flows into second tube connector 103 from air inlet pipe 401 through escape pipe 402 with the control refrigerant.
In the present embodiment, escape pipe 402 has first end and the second end, and its first end is communicated with above-mentioned heat exchanger tube 40, the second end and the second tube connector 103.Check valve 80 is arranged on this escape pipe 402, and can make the refrigerant in the escape pipe 402 flow to the second end from first end.Present embodiment is by arranging check valve 80 at escape pipe 402, air-conditioning system is when heating, prevent that by this check valve 80 refrigerant from flowing to the first end of escape pipe 402 from the second end of escape pipe 402, and flow to air inlet pipe 401 through heat exchanger tube 40 and cause impacting with high pressure to magnetic valve 403.
Further, also be connected with low pressure tank 90 for separating of gaseous coolant and liquid refrigerants between muffler 702 and the cross valve 60.In the present embodiment, the suction end S of cross valve 60 is communicated with low pressure tank 90 by the 3rd tube connector, and the mouth of pipe of the 3rd tube connector is positioned at the top of low pressure tank 90; Muffler 702 is inserted low pressure tank 90, and so that the mouth of pipe of muffler 702 is positioned at the top of low pressure tank 90.To enter the low pressure tank by the 3rd tube connector after 90s when refrigerant, and liquid refrigerant will sink to the bottom of low pressure tank 90, and the refrigerant of gaseous state will return the first compressor 70 by muffler 702.Present embodiment is separated with the refrigerant of gaseous state liquid by this low pressure tank 90, thereby can prevent that liquid refrigerants from entering in the first compressor 70, and then can better protect compressor by a low pressure tank 90 is set between muffler 702 and suction end S.
Particularly, based on above-described embodiment, in the present embodiment, at least one the second compressor also can be on the first compressor 70 in parallel.The quantity of this second compressor can arrange as required, does not limit further at this.
Should be noted that above-mentioned the first compressor 70 is frequency-changeable compressor or constant speed compressor, the second compressor is frequency-changeable compressor or constant speed compressor.
It below only is preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (9)
1. air-conditioning system, it is characterized in that, comprise outdoor heat exchanger, indoor heat exchanger, indoor fan and heat exchanger tube, wherein, an end of outdoor heat exchanger is communicated with indoor heat exchanger by the first tube connector, capillary, the second tube connector, the electric expansion valve that connects successively; Heat exchanger tube is arranged between described indoor heat exchanger and the indoor fan, and an end of this heat exchanger tube is provided with the air inlet pipe that is communicated with described the first tube connector, and this air inlet pipe is provided with magnetic valve, and the other end of this heat exchanger tube is provided with the escape pipe that is communicated with the second tube connector.
2. air-conditioning system as claimed in claim 1 is characterized in that, described escape pipe is provided with the check valve that flows into described the second tube connector for the control refrigerant from described air inlet pipe through escape pipe.
3. air-conditioning system as claimed in claim 1 is characterized in that, also comprises controller, and this controller and the electrical connection of described magnetic valve are to control opening or closing of this magnetic valve.
4. air-conditioning system as claimed in claim 1 is characterized in that, described outdoor heat exchanger is air cooling heat exchanger or water cooling heat exchanger.
5. such as each described air-conditioning system of claim 1 to 4, it is characterized in that also comprise cross valve and the first compressor, this first compressor has blast pipe and muffler; This cross valve has exhaust end, suction end, condenser end and evaporator end, and wherein exhaust end is communicated with described blast pipe, and suction end is communicated with described muffler; One end of described outdoor heat exchanger is communicated with described the first tube connector, and the other end is communicated with described condenser end; One end of described indoor heat exchanger is communicated with described electric expansion valve, and the other end is communicated with described evaporator end.
6. air-conditioning system as claimed in claim 5 is characterized in that, also is connected with the low pressure tank for separating of gaseous coolant and liquid refrigerants between described muffler and the described cross valve.
7. air-conditioning system as claimed in claim 5 is characterized in that, also comprises the second compressor of at least one and described the first compressor parallel.
8. air-conditioning system as claimed in claim 7 is characterized in that, described the first compressor is frequency-changeable compressor or constant speed compressor.
9. air-conditioning system as claimed in claim 7 is characterized in that, described the second compressor is frequency-changeable compressor or constant speed compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204267376U CN202792469U (en) | 2012-08-24 | 2012-08-24 | Air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204267376U CN202792469U (en) | 2012-08-24 | 2012-08-24 | Air-conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202792469U true CN202792469U (en) | 2013-03-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204267376U Expired - Fee Related CN202792469U (en) | 2012-08-24 | 2012-08-24 | Air-conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202792469U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775624A (en) * | 2018-06-28 | 2018-11-09 | 珠海格力电器股份有限公司 | Air-conditioning system |
| CN108826731A (en) * | 2018-05-29 | 2018-11-16 | 广东美的制冷设备有限公司 | Air conditioner, progress control method and computer readable storage medium |
| CN111609589A (en) * | 2020-04-24 | 2020-09-01 | 珠海格力电器股份有限公司 | Double-temperature air conditioning system, control method and air conditioner |
| CN113405165A (en) * | 2021-06-23 | 2021-09-17 | 珠海格力电器股份有限公司 | Air conditioner, air conditioner refrigeration control method, computer device and storage medium |
-
2012
- 2012-08-24 CN CN2012204267376U patent/CN202792469U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108826731A (en) * | 2018-05-29 | 2018-11-16 | 广东美的制冷设备有限公司 | Air conditioner, progress control method and computer readable storage medium |
| CN108775624A (en) * | 2018-06-28 | 2018-11-09 | 珠海格力电器股份有限公司 | Air-conditioning system |
| CN108775624B (en) * | 2018-06-28 | 2023-09-12 | 珠海格力电器股份有限公司 | Air Conditioning System |
| CN111609589A (en) * | 2020-04-24 | 2020-09-01 | 珠海格力电器股份有限公司 | Double-temperature air conditioning system, control method and air conditioner |
| CN113405165A (en) * | 2021-06-23 | 2021-09-17 | 珠海格力电器股份有限公司 | Air conditioner, air conditioner refrigeration control method, computer device and storage medium |
| CN113405165B (en) * | 2021-06-23 | 2022-03-04 | 珠海格力电器股份有限公司 | Air conditioner, air conditioner refrigeration control method, computer device and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20190824 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |