CN202792261U - Multi-split air conditioning system - Google Patents
Multi-split air conditioning system Download PDFInfo
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- CN202792261U CN202792261U CN2012204266886U CN201220426688U CN202792261U CN 202792261 U CN202792261 U CN 202792261U CN 2012204266886 U CN2012204266886 U CN 2012204266886U CN 201220426688 U CN201220426688 U CN 201220426688U CN 202792261 U CN202792261 U CN 202792261U
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- expansion valve
- 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
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Abstract
The utility model discloses a multi-split air conditioning system. The multi-split air conditioning system comprises an outdoor heat exchanger, a throttle component and at least two branch parts, wherein the throttle component is provided with a first end and a second end; one end of the outdoor heat exchanger is communicated with the first end of the throttle component through an outdoor electronic expansion valve and a long matching pipe; and each branch part comprises an indoor heat exchanger and an indoor electronic expansion valve, one end of the each indoor electronic expansion valve is communicated with the relative indoor heat exchanger, and the other end of the each indoor electronic expansion valve is communicated with the throttle component. According to the multi-split air conditioning system disclosed by the utility model, the problem that in the prior art, the service life of a compressor is affected by the a multi-split air conditioning system as the compressor frequently enters into a protection state due to larger fluctuation of pressure parameters of a refrigerant is solved; and the flow of the aperture of the indoor electronic expansion valve is prevented from entering into a area range, where the flow change is non-linear, of an electronic expansion valve is prevented from changing within a non-linear area range, and thus the situation that the service life of a first compressor is affected as the first compressor frequently enters into the protection state due to the larger fluctuation of the pressure parameters of a system is prevented.
Description
Technical field
The utility model relates to air-conditioning technical field, particularly a kind of multi-online air-conditioning system.
Background technology
Existing multi-online air-conditioning system generally adopts the method for indoor set throttling, and Some Enterprises adopts lower-cost throttle part (0～480 step electric expansion valve).Adopt this electric expansion valve to carry out the control of the return-air degree of superheat as the indoor electronic expansion valve, because the aperture of indoor electronic expansion valve will be moved in more among a small circle, and this type of electric expansion valve adjustable range is narrow, and the discharge characteristic non-linear phenomena of its electric expansion valve in the scope in 0～100 step is obvious.Under refrigeration mode, because multi-online air-conditioning system refrigerant pressure parameter fluctuation is larger, so that high frequent enters guard mode, thereby have a strong impact on service life of compressor; Owing to the increase of indoor set number in parallel, the problem that causes high frequent to enter guard mode will be more obvious simultaneously.
The utility model content
Main purpose of the present utility model is to provide a kind of multi-online air-conditioning system; be intended to solve multi-online air-conditioning system because the fluctuation of refrigerant pressure parameter causes high frequent to enter the problem that guard mode affects the service life of compressor greatly, prolong the service life of compressor.
To achieve these goals, the utility model provides a kind of multi-online air-conditioning system, comprises outdoor heat exchanger, throttle part and at least two branching portions, and wherein, throttle part has first end and the second end; One end of outdoor heat exchanger is communicated with the first end of throttle part by outdoor electric expansion valve, long pipe arrangement; Branching portion comprises indoor heat exchanger and indoor electronic expansion valve, and an end of this indoor electronic expansion valve is communicated with indoor heat exchanger, and the other end is communicated with the second end of described throttle part.
Preferably, described multi-online air-conditioning system also comprises check valve, the two ends of this check valve are connected with the first tube connector and the second tube connector, and the refrigerant in the multi-online air-conditioning system flows to the second tube connector from this first tube connector through described check valve, this first tube connector is connected with the end of described throttle part near described indoor electronic expansion valve, and the second tube connector is connected with the other end of the close described long pipe arrangement of described throttle part.
Preferably, described multi-online air-conditioning system also comprises cross valve, the first compressor and low pressure tank, 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 by described low pressure tank; 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, described multi-online 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.
Preferably, described throttle part is heating power expansion valve or capillary.
Preferably, described throttle part is electric expansion valve.
Preferably, described multi-online air-conditioning system also comprises and described electric expansion valve electrical connection, and is used for the controller that this electric expansion valve of control opens or closes.
Preferably, described outdoor heat exchanger is air cooling heat exchanger or water cooling heat exchanger.
Present embodiment is by arranging throttle part between branching portion and long pipe arrangement; when freezing, the refrigerant in the coolant circulating system is carried out the throttling first time by this throttle part; then carry out second throttle by the indoor electronic expansion valve; so when second throttle, can suitably improve the aperture of indoor electronic expansion valve; thereby so that in according to the degree of superheat conditioning chamber of the outdoor heat exchanger port of export during aperture of electric expansion valve; the changes in flow rate that the aperture that can effectively prevent the indoor electronic expansion valve enters electric expansion valve is in the nonlinear regional extent, and then can prevent that the system pressure parameter fluctuation is large and cause the first high frequent to enter the service life that guard mode affects the first compressor.Therefore, the multi-online air-conditioning system that the utility model provides can improve the stability of multi-online air-conditioning system, prolongs the service life of the first compressor; Simultaneously, increase pressure reduction, so that lubricating oil can return compressor smoothly, thereby protected better the first compressor.
Description of drawings
Fig. 1 is the structural representation of the utility model multi-online 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 multi-online air-conditioning system preferred embodiment.The multi-online air-conditioning system that present embodiment provides comprises outdoor heat exchanger 10, throttle part 20 and at least two branching portions 30, and wherein, throttle part 10 has first end and the second end; One end of outdoor heat exchanger 10 is communicated with the first end of throttle part 20 by outdoor electric expansion valve 101, long pipe arrangement 40; Branching portion 30 comprises indoor heat exchanger 301 and indoor electronic expansion valve 302, and an end of this indoor electronic expansion valve 302 is communicated with indoor heat exchanger 301, and the other end is communicated with the second end of throttle part 20.
In the present embodiment, behind the throttle part 20 a plurality of branches can be set, and be an indoor heat exchanger 301 and indoor electronic expansion valve 301 in each branch, thereby should consist of multi-online air-conditioning system.
Particularly, air-conditioning system also comprises cross valve 50, the first compressor 60 and low pressure tank 70, and this first compressor 60 has blast pipe 601 and muffler 602; This cross valve 50 has exhaust end D, suction end S, condenser end C and evaporator end E, and wherein exhaust end D is communicated with blast pipe 601, and suction end S is communicated with muffler 602 by low pressure tank 70; 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 301 is communicated with indoor electronic expansion valve 301, and the other end is communicated with evaporator end E, and this indoor electronic expansion valve 301 is communicated with above-mentioned throttle part.
When the multi-online air-conditioning system refrigerating operaton, exhaust end D and condenser end C that multi-online air-conditioning system will be controlled cross valve 50 are communicated with, and suction end S and evaporator end E are communicated with.Refrigerant will flow to outdoor heat exchanger 10 through cross valve 50 from the blast pipe 601 of the first compressor 60 and carry out heat exchange this moment; Then flow into long pipe arrangement 40 by outdoor electric expansion valve 101, and under the effect of throttle part 20, refrigerant is carried out the throttling first time; The refrigerant that carries out after the throttling will flow into each branch, be undertaken flowing into indoor set behind the second throttle by indoor electronic expansion valve 301 and carry out heat exchange; Return the first compressor 60 by cross valve 50, low pressure tank 70, muffler 602 at last.In the present embodiment, the suction end S of cross valve 50 is communicated with low pressure tank 70 by the 3rd tube connector, and the mouth of pipe of the 3rd tube connector is positioned at the top of low pressure tank 70; Muffler 602 is inserted low pressure tank 70, and so that the mouth of pipe of muffler 602 is positioned at the top of low pressure tank 70.After refrigerant enters low pressure tank 70 by the 3rd tube connector, liquid refrigerant will sink to the bottom of low pressure tank 70, and the refrigerant of gaseous state will return the first compressor 60 by muffler 602.Because this low pressure tank 70 separates with the refrigerant of gaseous state liquid, thereby can prevent that liquid refrigerants from entering in the first compressor 60, and then can better protect the first compressor 60.
Should be noted that in the present embodiment that the aperture of indoor expansion valve 302 is to regulate according to the degree of superheat of outdoor heat exchanger 10 ports of export.
Present embodiment is by arranging a throttle part 20 between branching portion 30 and long pipe arrangement 40; when freezing, the refrigerant in the coolant circulating system is carried out the throttling first time by this throttle part 20; then carry out second throttle by indoor electronic expansion valve 302; so when second throttle, can suitably improve the aperture of indoor electronic expansion valve 302; thereby so that in according to the degree of superheat conditioning chamber of outdoor heat exchanger 10 ports of export during aperture of electric expansion valve 302; the changes in flow rate that the aperture that can effectively prevent indoor electronic expansion valve 302 enters electric expansion valve is in the nonlinear regional extent, and then can prevent that the system pressure parameter fluctuation is large and cause the first compressor 60 frequently to enter the service life that guard mode affects the first compressor 60.Therefore, the multi-online air-conditioning system that the utility model provides can improve the stability of multi-online air-conditioning system, prolongs the service life of the first compressor 60; Simultaneously, increase pressure reduction, so that lubricating oil can return compressor smoothly, thereby protected better the first compressor 60.
Should be noted that above-mentioned outdoor heat exchanger 10 is air cooling heat exchanger or water cooling heat exchanger.
Further, above-mentioned multi-online air-conditioning system also comprises check valve 80, the two ends of this check valve 80 are connected with the first tube connector 801 and the second tube connector 802, and the refrigerant in this multi-online air-conditioning system flows to the second tube connector 802 from this first tube connector 801 through check valve 80, this first tube connector 801 is connected with the end of throttle part 20 near indoor electronic expansion valve 302, and the second tube connector 802 is connected with the other end near long pipe arrangement 40 of throttle part 20.
In the present embodiment, the internal diameter of above-mentioned check valve 80, the first tube connector 801 and the second tube connector 802 is adaptive with the internal diameter of long pipe arrangement 40.By the first tube connector 801 and the second tube connector 802 check valve 80 is connected in parallel on throttle part 20 two ends, thereby when heating in system, refrigerant flows in the long pipe arrangement 40 by check valve 80, therefore can prevent the throttling of carrying out to throttle part 20 refrigerants, thereby so that in the first compressor return air pipe the degree of superheat of refrigerant too high and damage compressor.
Above-mentioned throttle part 20 can be heating power expansion valve, capillary or electric expansion valve.When throttle part 20 is electric expansion valve, also can arrange in the multi-online air-conditioning system one with the electrical connection of this electric expansion valve, and be used for the controller (not shown) that this electric expansion valve of control opens or closes.In the present embodiment, when multi-online air-conditioning system freezed, 302 pairs of refrigerants of this electric expansion valve and indoor electronic expansion valve played throttling action jointly.Particularly, the aperture of electric expansion valve and indoor electronic expansion valve 302 can be regulated by controller according to actual needs, does not limit further at this.Aperture that for example can electric expansion valve is set to certain value, and so that the regulation scope of indoor electronic expansion valve 302 is that 200P is between the 400P.Should be noted that this controller also is electrically connected with above-mentioned cross valve 50, and be used for the connected state of each end of control cross valve 50.The aperture scope that should be noted that electric expansion valve can arrange according to actual needs, and for example can adopt the aperture scope is the 0-480P electric expansion valve.In the present embodiment, owing to only increased a throttle part 20, therefore guaranteed that the cost of multi-online air-conditioning system remains unchanged substantially.
Particularly, based on above-described embodiment, in the present embodiment, at least one the second compressor also can be on the first compressor 60 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 60 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 (10)
1. a multi-online air-conditioning system is characterized in that, comprises outdoor heat exchanger, throttle part and at least two branching portions, and wherein, throttle part has first end and the second end; One end of outdoor heat exchanger is communicated with the first end of throttle part by outdoor electric expansion valve, long pipe arrangement; Branching portion comprises indoor heat exchanger and indoor electronic expansion valve, and an end of this indoor electronic expansion valve is communicated with indoor heat exchanger, and the other end is communicated with the second end of described throttle part.
2. multi-online air-conditioning system as claimed in claim 1, it is characterized in that, also comprise check valve, the two ends of this check valve are connected with the first tube connector and the second tube connector, and the refrigerant in the multi-online air-conditioning system flows to the second tube connector from this first tube connector through described check valve, this first tube connector is connected with the end of described throttle part near described indoor electronic expansion valve, and the second tube connector is connected with the other end of the close described long pipe arrangement of described throttle part.
3. multi-online air-conditioning system as claimed in claim 2 is characterized in that, also comprises cross valve, the first compressor and low pressure tank, 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 by described low pressure tank; 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.
4. multi-online air-conditioning system as claimed in claim 3 is characterized in that, also comprises the second compressor of at least one and described the first compressor parallel.
5. multi-online air-conditioning system as claimed in claim 4 is characterized in that, described the first compressor is frequency-changeable compressor or constant speed compressor.
6. multi-online air-conditioning system as claimed in claim 4 is characterized in that, described the second compressor is frequency-changeable compressor or constant speed compressor.
7. multi-online air-conditioning system as claimed in claim 1 or 2 is characterized in that, described throttle part is heating power expansion valve or capillary.
8. multi-online air-conditioning system as claimed in claim 1 or 2 is characterized in that, described throttle part is electric expansion valve.
9. multi-online air-conditioning system as claimed in claim 8 is characterized in that, also comprises and described electric expansion valve electrical connection, and is used for the controller that this electric expansion valve of control opens or closes.
10. multi-online 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204266886U CN202792261U (en) | 2012-08-24 | 2012-08-24 | Multi-split air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204266886U CN202792261U (en) | 2012-08-24 | 2012-08-24 | Multi-split air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202792261U true CN202792261U (en) | 2013-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204266886U Expired - Fee Related CN202792261U (en) | 2012-08-24 | 2012-08-24 | Multi-split air conditioning system |
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| Country | Link |
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| CN (1) | CN202792261U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107842962A (en) * | 2017-12-20 | 2018-03-27 | 江苏阅源机电工程有限公司 | A kind of variable-flow air-conditioning system |
| CN107975989A (en) * | 2017-11-16 | 2018-05-01 | 广东美的暖通设备有限公司 | The defrosting control method of multi-online air-conditioning system |
| CN108139106A (en) * | 2015-10-26 | 2018-06-08 | 三菱电机株式会社 | Conditioner |
| CN111503725A (en) * | 2020-04-29 | 2020-08-07 | 宁波奥克斯电气股份有限公司 | Multi-split air conditioning system and control method thereof |
-
2012
- 2012-08-24 CN CN2012204266886U patent/CN202792261U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108139106A (en) * | 2015-10-26 | 2018-06-08 | 三菱电机株式会社 | Conditioner |
| CN107975989A (en) * | 2017-11-16 | 2018-05-01 | 广东美的暖通设备有限公司 | The defrosting control method of multi-online air-conditioning system |
| CN107842962A (en) * | 2017-12-20 | 2018-03-27 | 江苏阅源机电工程有限公司 | A kind of variable-flow air-conditioning system |
| CN111503725A (en) * | 2020-04-29 | 2020-08-07 | 宁波奥克斯电气股份有限公司 | Multi-split air conditioning system and control method thereof |
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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 |