CN203908132U - Air conditioning system - Google Patents
Air conditioning system Download PDFInfo
- Publication number
- CN203908132U CN203908132U CN201420288746.2U CN201420288746U CN203908132U CN 203908132 U CN203908132 U CN 203908132U CN 201420288746 U CN201420288746 U CN 201420288746U CN 203908132 U CN203908132 U CN 203908132U
- Authority
- CN
- China
- Prior art keywords
- conditioning system
- air
- expansion valve
- heat exchanger
- compressor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004378 air conditioning Methods 0.000 title claims abstract description 40
- 239000003507 refrigerant Substances 0.000 claims abstract description 40
- 238000010438 heat treatment Methods 0.000 claims abstract description 39
- 238000004880 explosion Methods 0.000 claims description 23
- 230000004888 barrier function Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 230000007306 turnover Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 2
- 230000006872 improvement Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000010687 lubricating oil Substances 0.000 description 9
- 239000003921 oil Substances 0.000 description 6
- 239000010725 compressor oil Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000010726 refrigerant oil Substances 0.000 description 2
- 239000010729 system oil Substances 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000010688 mineral lubricating oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The utility model belongs to the technical field of air conditioners and particularly relates to an air conditioning system. The air conditioning system is provided with a refrigerant circulating loop consisting of a compressor, a four-way valve, an outdoor heat exchanger, an electronic expansion valve, an indoor heat exchanger and the like. For improvement, an explosion-proof heating tape started when the air conditioning system performs low-temperature heating is arranged on the electronic expansion valve. The explosion-proof heating tape heats the electronic expansion valve under the working condition that the air conditioning system performs the low-temperature heating and prevents the problem that rapid temperature reduction caused by throttling of the electronic expansion valve in the air-conditioner starting process enables the oil viscosity of the compressor to be increased, accordingly a valve core of the electronic expansion valve is plugged, an R290 refrigerant cannot participate in circulation and the compressor is damaged in idling. After the explosion-proof heating tape is added on the electronic expansion valve, the situation can be effectively avoided, user experience is improved, and the service life of the compressor and the system is prolonged.
Description
Technical field
The utility model belongs to air-conditioning technical field, relates in particular to a kind of air-conditioning system of R290 refrigerant.
Background technology
At present, in air conditioner refrigerating technical field, mostly with R410a refrigerant, substitute traditional R22 refrigerant, but GWP value (the Global Warming Potential due to R410a refrigerant, global warming potential) higher,, countries in the world day by day serious at Present Global greenhouse effects to the background of global climate transition pay attention to day by day under, also will be eliminated gradually.Therefore, the low GWP refrigerant that R32, R290 are representative is take at present more absorbed research, and meanwhile, corresponding compressor research and development are also underway.Wherein, compressor lubricant oil also more and more comes into one's own as requisite part in air-conditioning system.
Lubricating oil in cooler compressor is extremely important to the normal operation of system, and lubricating oil plays a part lubricated, the sealing and cooling to cylinder and rotor, particularly for refrigerants such as R290, is even more important.When compressor runs well, lubricating oil sucks cylinder by bent axle from compressor bottom, after overcompression, follow the refrigerant of HTHP to enter system, along with refrigerant circulation is got back to compressor bottom again, the heat that compressor electric motor and cylinder produce simultaneously also can be taken away by refrigerant and lubricating oil afterwards.If exist certain reason to cause oil return return-air not smooth, will cause the problems such as compressor lubrication shortage of oil, motor idle running heating, further will cause between compresser cylinder and rotor that wearing and tearing strengthen, internal temperature is too high, finally cause burn-down of electric motor, system crash.So in system, must guarantee that lubricating oil can return to compressor normally and motor heat is discharged timely.
But common mineral lubricating oil at low temperatures viscosity can sharply increase, particularly, in changes in temperature frequency changer, when defrost finishes cross valve commutation, ultralow temperature refrigerant and lubricating oil in heat exchanger need to enter heat exchanger by electric expansion valve.But for R290 refrigerant, because the consideration of security, the charging amount of R290 refrigerant is less, so system pressure is also less, therefore also easily cause lubricating oil that ratio of viscosities is larger to stop up the electric expansion valve of normal aperture, cause R290 refrigerant cannot participate in circulation, compressor idle running, ability and power decline, system oil starvation lacks fluorine, compressor electric motor excessive heating after long time running, had both affected user's use impression, also greatly reduced the service life of compressor and system.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of air-conditioning system, to solve the air-conditioning system cold-starting of existing use R290 refrigerant, oil technical problem stifled, that consequently cause compressor and whole system to damage easily occurs.
To achieve these goals, the air-conditioning system that the utility model provides, comprise a refrigerant circulation circuit, in described refrigerant circulation circuit, be connected with compressor, cross valve, outdoor heat exchanger, electric expansion valve and indoor heat exchanger in turn, as improvement, on described electric expansion valve, be provided with the anti-explosion heating band of a startup when air-conditioning system is carried out low-temperature heating.
Further, described electric expansion valve comprises body rotating mechanism, the coil holder joining with it and is connected to described body rotating mechanism bottom, is respectively used to horizontal adapter and the vertical joint pipe of refrigerant turnover; And the winding of described anti-explosion heating band is placed in the junction outer rim of described horizontal adapter and described vertical joint pipe.
Further, described anti-explosion heating band has girdle structure, described belt body comprise innermost layer wire, be coated on the exothermic material on described wire, the screen layer that is coated on the insulating barrier on described exothermic material and is coated on described insulating barrier.
Further, described refrigerant circulation circuit is formed by connecting by copper pipe; The refrigerant exit of described compressor is connected with the first interface of described cross valve, the return-air interface of described compressor is connected with the 3rd interface of described cross valve, described outdoor heat exchanger is connected between second interface and described electric expansion valve of described cross valve, and described indoor heat exchanger is connected between the 4th interface of described electric expansion valve and described cross valve.
Preferably, the included compressor of described air-conditioning system is a plurality of compressors that are connected in parallel.
Preferably, the quantity of the indoor heat exchanger that described air-conditioning system is included is a plurality of, and the type of attachment between described a plurality of indoor heat exchangers is parallel connection, series connection or combination in parallel and series connection.
Preferably, described outdoor heat exchanger is forced air cooling type finned coil needle recuperator.
Preferably, described indoor heat exchanger is bleed type finned coil formula heat exchanger.
The air-conditioning system that the utility model provides, there is the refrigerant circulation circuit being formed by compressor, cross valve, outdoor heat exchanger, electric expansion valve and indoor heat exchanger etc., as improvement, on electric expansion valve, be provided with the anti-explosion heating band of a startup when air-conditioning system is carried out low-temperature heating.This anti-explosion heating band heats electric expansion valve under air-conditioning system low-temperature heating operating mode, prevent that in starting of air conditioner process, electric expansion valve throttling causes temperature sharply to reduce, compressor oil viscosity is increased, thereby block the spool of electric expansion valve, cause R290 refrigerant cannot participate in circulation, compressor idle running, finally causes damage.On electric expansion valve, set up after an anti-explosion heating band, can effectively avoid the generation of above-mentioned situation, both improved user and experienced, extended again the service life of compressor and system.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of refrigerant circulation circuit in the air-conditioning system that provides of the utility model embodiment;
Fig. 2 is the scheme of installation of the anti-explosion heating band that provides of the utility model embodiment;
Fig. 3 is the structural representation of the anti-explosion heating band that provides of the utility model embodiment.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Fig. 1 is the schematic diagram of refrigerant circulation circuit in the air-conditioning system that provides of the utility model embodiment; For convenience of explanation, only show the part relevant to the present embodiment.Referring to Fig. 1:
The air-conditioning system that the utility model embodiment provides, comprises refrigerant circulation circuit as shown in Figure 1.Described refrigerant circulation circuit by copper pipe, be connected with compressor 101, cross valve 102, outdoor heat exchanger 103, electric expansion valve 104 and indoor heat exchanger 105 in turn; As improvement, on electric expansion valve 104, be also provided with the anti-explosion heating band 106 of a startup when air-conditioning system is carried out low-temperature heating.
Further, the refrigerant exit of compressor 101 is connected with the first interface of cross valve 102, the return-air interface of compressor 101 is connected with the 3rd interface of cross valve 102, outdoor heat exchanger 103 is connected between second interface and electric expansion valve 104 of cross valve 102, and indoor heat exchanger connects 105 between the 4th interface of electric expansion valve 104 and cross valve 102.
Fig. 2 shows a kind of scheme of installation of anti-explosion heating band.Particularly, electric expansion valve 104 comprise body rotating mechanism 401, the coil holder 402 that joins with body rotating mechanism 401 and be connected to described body rotating mechanism 401 bottoms, be respectively used to horizontal adapter 403 and the vertical joint pipe 404 of refrigerant turnover; And anti-explosion heating band 106, around being arranged at the junction outer rim of described horizontal adapter 403 with described vertical joint pipe 404, ring set is at the needle place of electric expansion valve 104 inside.
As a preferred embodiment, the structure of anti-explosion heating band 106 can be as shown in Figure 3.Referring to Fig. 3, anti-explosion heating band 106 has girdle structure, belt body comprise innermost layer wire 601, be coated on exothermic material 602 on described wire 601, be coated on the insulating barrier 603 on described exothermic material 602 and be coated on the screen layer 604 on described insulating barrier 603.In fact, when specific implementation, insulating barrier 603 and screen layer 604 can be respectively the sandwich constructions that different materials forms, and for example insulating barrier 603 can be high density IXPE material, and screen layer 604 can be foil shielding layer, copper clad aluminum magnesium alloy or copper covered steel woven layer.
In practical work process, when existing air-conditioning system is used R290 refrigerant, when defrost finishes, cross valve 102 commutations are when again heat, the ultralow temperature refrigerant in indoor heat exchanger 105 and lubricating oil need to enter outdoor heat exchanger 103 by electric expansion valve 104.But for the consideration of R290 refrigerant security, its charging amount is generally less, so system pressure is also less, therefore can cause oil that ratio of viscosities is larger to stop up the electric expansion valve 104 of normal aperture, cause R290 refrigerant cannot participate in circulation, compressor idle running.
The air-conditioning system providing according to the utility model, set up an anti-explosion heating band 106 on electric expansion valve 104 after, described anti-explosion heating band 106 is also only opened under heating condition.When user sets heating mode, anti-explosion heating band 106 is opened, and can preheat t minute to electric expansion valve (for example, preferably 5 minutes), while being used for improving outdoor low temperature, stick to the temperature of the compressor lubricant oil of spool, stop to stop up the hidden danger of electric expansion valve 104.And, after defrost finishes, when cross valve 102 commutations heat again, ultralow temperature refrigerant in indoor heat exchanger 105 and lubricating oil need to enter outdoor heat exchanger 103 by electric expansion valve 104, due to 106 pairs of electric expansion valve 104 spools of anti-explosion heating band continue heat, make spool place compressor oil be difficult to stick on spool, make R290 refrigerant be able to normal circulation in system.Effectively avoid the generation of oily stifled situation, both improved user and experienced, extended again the service life of compressor and system.
In specific implementation process, in the air-conditioning system that the utility model preferred embodiment provides, included compressor 101 can be a plurality of compressors that are connected in parallel.
Further, as a preferred embodiment, the quantity of the indoor heat exchanger 105 that described air-conditioning system is included can be for one or more.If a plurality of indoor heat exchangers, its type of attachment is parallel connection, series connection or combination in parallel and series connection.
Further, as a preferred embodiment, described outdoor heat exchanger 103 is forced air cooling type finned coil needle recuperator; Described indoor heat exchanger 105 is bleed type finned coil formula heat exchanger.
In sum, the air-conditioning system that the utility model embodiment provides, there is the refrigerant circulation circuit being formed by compressor, cross valve, outdoor heat exchanger, electric expansion valve and indoor heat exchanger etc., as improvement, on electric expansion valve, be provided with the anti-explosion heating band of a startup when air-conditioning system is carried out low-temperature heating.This anti-explosion heating band heats electric expansion valve under air-conditioning system low-temperature heating operating mode, prevent that in starting of air conditioner process, electric expansion valve throttling causes temperature sharply to reduce, compressor oil viscosity is increased, thereby block the spool of electric expansion valve, cause R290 refrigerant cannot participate in circulation, compressor idle running, finally causes damage.On electric expansion valve, set up after an anti-explosion heating band, can effectively avoid the generation of above-mentioned situation, both improved user's experience, extended again the service life of compressor and system.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, although the utility model has been carried out to more detailed explanation with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified or part technical characterictic is wherein equal to replacement.All any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (8)
1. an air-conditioning system, comprise a refrigerant circulation circuit, in described refrigerant circulation circuit, be connected with compressor, cross valve, outdoor heat exchanger, electric expansion valve and indoor heat exchanger in turn, it is characterized in that, on described electric expansion valve, be provided with the anti-explosion heating band of a startup when air-conditioning system is carried out low-temperature heating.
2. air-conditioning system as claimed in claim 1, is characterized in that, described electric expansion valve comprises body rotating mechanism, the coil holder joining with it and is connected to described body rotating mechanism bottom, is respectively used to horizontal adapter and the vertical joint pipe of refrigerant turnover; And the winding of described anti-explosion heating band is placed in the junction outer rim of described horizontal adapter and described vertical joint pipe.
3. air-conditioning system as claimed in claim 1 or 2, it is characterized in that, described anti-explosion heating band has girdle structure, described belt body comprise innermost layer wire, be coated on exothermic material on described wire, be coated on the insulating barrier on described exothermic material and be coated on the screen layer on described insulating barrier.
4. air-conditioning system as claimed in claim 1, is characterized in that, described refrigerant circulation circuit is formed by connecting by copper pipe; The refrigerant exit of described compressor is connected with the first interface of described cross valve, the return-air interface of described compressor is connected with the 3rd interface of described cross valve, described outdoor heat exchanger is connected between second interface and described electric expansion valve of described cross valve, and described indoor heat exchanger is connected between the 4th interface of described electric expansion valve and described cross valve.
5. air-conditioning system as claimed in claim 4, is characterized in that, the included compressor of described air-conditioning system is a plurality of compressors that are connected in parallel.
6. air-conditioning system as claimed in claim 4, is characterized in that, the quantity of the indoor heat exchanger that described air-conditioning system is included is a plurality of, and the type of attachment between described a plurality of indoor heat exchangers is parallel connection, series connection or combination in parallel and series connection.
7. air-conditioning system as claimed in claim 1, is characterized in that, described outdoor heat exchanger is forced air cooling type finned coil needle recuperator.
8. air-conditioning system as claimed in claim 1, is characterized in that, described indoor heat exchanger is bleed type finned coil formula heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420288746.2U CN203908132U (en) | 2014-05-30 | 2014-05-30 | Air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420288746.2U CN203908132U (en) | 2014-05-30 | 2014-05-30 | Air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203908132U true CN203908132U (en) | 2014-10-29 |
Family
ID=51782398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420288746.2U Expired - Lifetime CN203908132U (en) | 2014-05-30 | 2014-05-30 | Air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203908132U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105091226A (en) * | 2015-08-07 | 2015-11-25 | 广东美芝制冷设备有限公司 | Control method and device for air conditioner system |
| CN105546641A (en) * | 2015-12-31 | 2016-05-04 | 广东美的制冷设备有限公司 | Air conditioning system, and processing method and device for oil blockage of air conditioning system |
| CN105570987A (en) * | 2015-12-31 | 2016-05-11 | 广东美的制冷设备有限公司 | Air conditioning system and oil blockage treatment method and treatment device of air conditioning system |
| CN111174373A (en) * | 2020-01-03 | 2020-05-19 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
-
2014
- 2014-05-30 CN CN201420288746.2U patent/CN203908132U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105091226A (en) * | 2015-08-07 | 2015-11-25 | 广东美芝制冷设备有限公司 | Control method and device for air conditioner system |
| CN105091226B (en) * | 2015-08-07 | 2018-11-06 | 广东美芝制冷设备有限公司 | The control method and control device of air-conditioning system |
| CN105546641A (en) * | 2015-12-31 | 2016-05-04 | 广东美的制冷设备有限公司 | Air conditioning system, and processing method and device for oil blockage of air conditioning system |
| CN105570987A (en) * | 2015-12-31 | 2016-05-11 | 广东美的制冷设备有限公司 | Air conditioning system and oil blockage treatment method and treatment device of air conditioning system |
| CN105546641B (en) * | 2015-12-31 | 2018-03-27 | 广东美的制冷设备有限公司 | Air-conditioning system, air-conditioning system oil stifled processing method and processing unit |
| CN105570987B (en) * | 2015-12-31 | 2019-01-29 | 广东美的制冷设备有限公司 | Air-conditioning system, air-conditioning system oil stifled processing method and processing unit |
| CN111174373A (en) * | 2020-01-03 | 2020-05-19 | 珠海格力电器股份有限公司 | 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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141029 |
|
| CX01 | Expiry of patent term |