CN2436854Y - Freezing-resistant device for air-cooling hot-pump type air conditioner - Google Patents
Freezing-resistant device for air-cooling hot-pump type air conditioner Download PDFInfo
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- CN2436854Y CN2436854Y CN 00246290 CN00246290U CN2436854Y CN 2436854 Y CN2436854 Y CN 2436854Y CN 00246290 CN00246290 CN 00246290 CN 00246290 U CN00246290 U CN 00246290U CN 2436854 Y CN2436854 Y CN 2436854Y
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- heat exchanger
- check valve
- heat converter
- capillary
- outdoor heat
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Abstract
The utility model discloses a defroster for an air cooling heat pump type air conditioner. The lower part of an outdoor heat exchanger of the air conditioner is provided with an auxiliary heat exchanger; a capillary tube and a parallel connection assembly of a one-way valve are arranged between the outdoor heat exchanger and the auxiliary heat exchanger, and the one-way valve enables refrigerant to flow towards the auxiliary heat exchanger from the outdoor heat exchanger; a capillary tube and a parallel connection assembly of a one-way valve are arranged between the auxiliary heat exchanger and a pipeline led to an indoor heat exchanger, and the one-way valve enables refrigerant to flow towards the auxiliary heat exchanger from the indoor heat exchanger via a pipeline. The auxiliary heat exchanger of the utility model can not generate frost in the operation of heating, and a pipeline on the bottom of the heat exchanger can be prevented from freezing, and the heating efficiency is high.
Description
The utility model relates to a kind of anti-icing equipment of wind cooled heat pump air conditioner.
Wind cooled heat pump air conditioner is widely used among the human settlements such as family, office.Its structure as shown in Figure 1.Wind cooled heat pump air conditioner is made of off-premises station 20 and indoor set 21 and tube connector 12,14.Wherein off-premises station is made of compressor 1, cross valve 2, outdoor heat converter 4, capillary 8 and 22, gas-liquid separator 17 and the parts such as fan 18 that are used for outdoor heat converter semi-finals heat transfer; Indoor set is made of indoor heat converter 13 and fan 19 parts such as grade that are used for indoor heat converter 13 augmentation of heat transfers and adjusting air quantity.
The operation of air-conditioner divides two kinds, i.e. refrigerating operaton and heating operation, refrigerating operaton are by consuming certain work done during compression, indoor transfer of heat in outdoor air, being realized room temperature lowering, dehumidifying.Heating operation is by consuming certain work done during compression, the transfer of heat in the outdoor air to indoor next, being raise indoor temperature, warm.
Air-conditioner is in heating process, because the outdoor heat converter surface temperature is lower than the outdoor environment air, and when outside air temperature was low, outdoor heat exchanger surface temperature meeting frosting was after the frost layer is increased to a certain degree, the heat exchange thermal resistance increases, evaporating temperature reduces, and the heat that cold-producing medium is obtained from outdoor air will reduce, and the indoor heat exchanger surface temperature descends, to have a strong impact on the indoor heating effect and the comfortableness of indoor environment, this moment, air-conditioner must carry out Defrost operation.
In the prior art, the Defrost operation of air-conditioner adopts cross valve reverse cycle defrost method usually, i.e. cross valve energising, and the flow direction that makes cold-producing medium is identical during with the air-conditioner refrigerating operaton.When Defrost operation, indoor heat converter 13 is as the evaporimeter of refrigeration system, and heat-obtaining from indoor environment is the influence degree of reduction to the indoor environment comfortableness, and indoor heat exchanger fan 19 shuts down; At this moment, outdoor heat converter 4 is as the condenser of refrigeration system, and the high temperature refrigerant steam is released into the frost layer on heat exchanger 4 surfaces with heat, makes it to melt, and for making full use of its condensation heat, this moment, fan 18 shut down.
In wind cooled heat pump air conditioner, its outdoor heat converter 4 generally adopts flue on top, liquid line is at the frame mode of bottom, its structure principle chart is referring to Fig. 3 (flow direction of cold-producing medium when the direction of arrow is represented the air conditioner heat-production operation among the figure, solid line in the heat exchanger pipeline is represented the pipeline connecting mode in the front of heat exchanger, and dotted line is represented the pipeline connecting mode of the reverse side of heat exchanger).When being refrigerating operaton, refrigerant vapour is set out through cross valve 2, flue 3 by compressor 1, is entered by the top of heat exchanger 4, and condensed liquid is flowed out by the bottom; During heating operation, the low temperature liquid cold-producing medium enters from the bottom of heat exchanger 4, and the gaseous refrigerant after the evaporation flows to cross valve 2 from the top of heat exchanger 4 through flue 3.
During Defrost operation, refrigerant vapour enters from the top of heat exchanger 4, liquid after being condensed flows out from the bottom, aqueous water after simultaneously melt on top is along the fin surface lower fins surface of flowing through, remain among the chassis of off-premises station 20, when outside air temperature is crossed when low, in the Defrost operation process, heat exchanger lower tube inner refrigerant degree of liquid subcooling may be lower than 0 ℃, cause the outer frost layer of lower tube not melted, on the contrary top is flowed down that water congeals into ice, and attached to fin surface, when coming back to heating operation when finishing to defrost, these condensate water or ice are freezed by refrigerant of low temperature, grow up.Along with the circulation that heats with the Defrost operation process is carried out, the chassis of off-premises station 20 and heat exchanger 4 bottoms will be by the long-pending icebergs of embacle, and it is more and more higher, the growth of these icebergs finally can cause heating effect to descend, frozen by iceberg but also outdoor heat exchanger fan 18 can occur, cause fan electromotor to burn.In recent years, the frequency that this type of fault occurs has been caused enough attention by air-conditioner producer going up year by year, but does not still have the way that solves so far, does not more have the bibliographical information of this respect.
The purpose of this utility model is to design a kind of anti-icing equipment that is added the wind cooled heat pump air conditioner that existing air-conditioner is formed by secondary unit, two pairs of capillaries, check valve parallel components for overcoming above-mentioned weak point.
The utility model content: a kind of anti-icing equipment of wind cooled heat pump air conditioner, comprise outdoor heat converter, capillary and check valve parallel component, it is characterized in that: be provided with secondary unit in the outdoor heat converter bottom, be provided with capillary, check valve parallel component between outdoor heat converter and secondary unit, described check valve allows cold-producing medium to flow to secondary unit by outdoor heat converter; In secondary unit with lead between the pipeline of indoor heat converter and be provided with capillary, check valve parallel component, described check valve licence system cryogen from indoor heat converter through the pipeline flow-direction secondary unit.Check valve, capillary paralleling assembly also can use electric expansion valve to replace.
The utility model advantage:
1. when air conditioner heat-production operation defrosting, high temperature refrigerant is released into heat on the frost layer on outdoor heat converter surface, make white melting layer, because the secondary unit surface is frostless in the heating operation, so can successfully flow to the off-premises station chassis behind the white melting layer on outdoor heat converter surface, can not be trapped in outdoor heat converter bottom and secondary unit surface, can prevent outdoor heat converter bottom pipeline, the icing phenomenon that fin and off-premises station chassis occur because of defrosting/frosting circulation, the generation of burning faults such as fan electromotor that can prevent that the outdoor heat exchanger fan flabellum is frozen and cause also makes air-conditioner have higher heating efficiency.
2. the utility model only needs the outdoor heat converter of air-conditioner is changed a social system, promptly (or many rows) finned coil is arranged as secondary unit in the bottom two of outdoor heat converter, increase a check valve again, described check valve and original assisted capillary are formed another check valve, capillary paralleling assembly, simple in structure, increase cost seldom.
Description of drawings:
Fig. 1 is the schematic diagram of existing air-conditioning;
Fig. 2 is the utility model schematic diagram;
Fig. 3 is existing outdoor heat converter structural representation;
Fig. 4 is the utility model outdoor heat converter, secondary unit and check valve, capillary paralleling assembly and pipe connecting structure schematic diagram.
Further specify the utility model below in conjunction with drawings and Examples:
Please referring to Fig. 2, Fig. 4, the anti-icing equipment of wind cooled heat pump air conditioner is the improvement on existing air-conditioner outdoor heat converter 4, the bottom two of outdoor heat converter 4 row's finned coil 23 as secondary unit 7, and by check valve 5 and capillary 6 parallel components heat exchanger 4 and secondary unit 7 are coupled together, between the outlet of secondary unit 7 and liquid line 10, check valve 9 and capillary 8 parallel components are set.According to above-mentioned annexation, just constituted the device that can prevent that outdoor heat converter from freezing.
The anti-icing equipment of wind cooled heat pump air conditioner is made of off-premises station 20 and indoor set 21 and tube connector 12,14.Wherein off-premises station is made of compressor 1, cross valve 2, outdoor heat converter 4, capillary 5, check valve 6, secondary unit 7, capillary 8, check valve 9, gas-liquid separator 17 and the parts such as fan 18 that are used for outdoor heat converter semi-finals heat transfer; Indoor set is made of indoor heat converter 13 and fan 19 parts such as grade that are used for indoor heat converter 13 augmentation of heat transfers and adjusting air quantity.
During the air-conditioner refrigerating operaton, the compressed machine 1 of low-pressure gaseous refrigerant is compressed into high temperature and high pressure gaseous refrigerant, through cross valve 2 (this moment, cross valve did not connect), tube connector 3 inlet chamber outer heat-exchangers 4; High-pressure gaseous refrigerant in outdoor heat converter 4 with the outdoor environment air carry out heat exchange, heat is disposed to outdoor air and cool off, condensation; Because the resistance of capillary 6 is greater than check valve 5, cold-producing medium flows out from the outlet of heat exchanger 4, during through check valve 5 and capillary 6 parallel components, by check valve 5 bypass, directly enters in the secondary unit 7, proceeds condensation and cold excessively; When liquid refrigerant is flowed through check valve 9 and capillary 8 assemblies because check valve 9 is reverse, so cold-producing medium in capillary 8 the throttling step-down after the back heat exchanger 13 in the inlet chambers of liquid line 10, liquid valve 11 and liquid tube connector 12; The refrigerant liquid body portion is the heat of the interior surrounding medium of absorption chamber herein, flashes to gaseous refrigerant; Gaseous refrigerant returns compressor 1 then along gas connection pipe 14, gas trap 15, flue 16, cross valve 2, gas-liquid separator 17.When air-conditioner during,, the transfer of heat in the indoor environment in the outdoor environment air, is realized the purpose of room temperature lowering, dehumidifying by consuming certain work done during compression at refrigerating operaton.
During the air conditioner heat-production operation, the compressed machine 1 of low-pressure gaseous refrigerant is compressed into high temperature and high pressure gaseous refrigerant, heat exchanger 13 in the cross valve 2 after connecing the electricity commutation, flue 16, gas trap 15, the gas connection pipe 14 back inlet chambers; High-pressure gaseous refrigerant carries out heat exchange with indoor environment in indoor heat converter 13, heat is disposed to the room air medium and cool off, condensation and cross cold one-tenth high pressure liquid refrigerant; High pressure liquid refrigerant enters check valve 9 and capillary 8 parallel components along liquid tube connector 12, liquid valve 11, liquid line 10; Because the resistance of capillary 8 is greater than check valve 9, bypass enters secondary unit 7 to cold-producing medium without throttling, high pressure liquid refrigerant must be cold in secondary unit 7, because the temperature of secondary unit 7 inner refrigerants is higher than 0 ℃, even the outdoor environment air themperature is low excessively, secondary unit 7 surfaces can frosting yet; The high pressure liquid refrigerant of crossing after cold enters check valve 5 and capillary 6 parallel components, because of check valve 5 opposite with refrigerant flow direction, so cold-producing medium throttling step-down in capillary 6, inlet chamber outer heat-exchanger 4, the heat of liquid refrigerant absorption chamber external environment air in outdoor heat converter 4 flashes to gaseous refrigerant; Gaseous refrigerant returns compressor 1 then along flue 3, cross valve 2, gas-liquid separator 17.When air-conditioner during at heating operation, by consuming certain work done during compression, the airborne transfer of heat of outdoor environment is gone to indoor environment, realize the purpose of heating indoor air medium.
Air-conditioner is when Defrost operation, and indoor heat converter 13 is as the evaporimeter of refrigeration system, and heat-obtaining from indoor environment is the influence degree of reduction to the indoor environment comfortableness, and indoor heat exchanger fan 19 shuts down.Outdoor heat converter 4 and secondary unit 7 be as the condenser of refrigeration system, and the high temperature refrigerant steam is released into the frost layer on heat exchanger 4 surfaces with heat, makes it to melt, and for making full use of its condensation heat, this moment, fan 18 shut down; Because during heating operation, secondary unit surface 7 is frostless, so when Defrost operation, the frost layer on outdoor heat converter 4 surfaces can successfully flow to the off-premises station chassis, and can not remain in outdoor heat converter 4 bottoms and secondary unit 7 surfaces.The frost layer that the utility model can make outdoor heat converter 4 surfaces fully, remove neatly and residual frost can not occur, so when heating next time, have good heating efficiency.
The utility model is to have increased a check valve 9 in the prior art, and assisted capillary 22 of the prior art is changed to capillary 6, and the cost that is increased is less.
Claims (2)
1. the anti-icing equipment of a wind cooled heat pump air conditioner, comprise outdoor heat converter, capillary and check valve parallel component, it is characterized in that: be provided with secondary unit in the outdoor heat converter bottom, be provided with capillary, check valve parallel component between outdoor heat converter and secondary unit, described check valve allows cold-producing medium to flow to secondary unit by outdoor heat converter; In secondary unit with lead between the pipeline of indoor heat converter and be provided with capillary, check valve parallel component, described check valve licence system cryogen from indoor heat converter through the pipeline flow-direction secondary unit.
2. the anti-icing equipment of wind cooled heat pump air conditioner as claimed in claim 1 is characterized in that: check valve, capillary paralleling assembly also can use electric expansion valve to replace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00246290 CN2436854Y (en) | 2000-08-03 | 2000-08-03 | Freezing-resistant device for air-cooling hot-pump type air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00246290 CN2436854Y (en) | 2000-08-03 | 2000-08-03 | Freezing-resistant device for air-cooling hot-pump type air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2436854Y true CN2436854Y (en) | 2001-06-27 |
Family
ID=33605586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00246290 Expired - Fee Related CN2436854Y (en) | 2000-08-03 | 2000-08-03 | Freezing-resistant device for air-cooling hot-pump type air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2436854Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644456B (en) * | 2008-08-04 | 2011-12-07 | Lg电子株式会社 | Method for controlling hot water circulation system associated with heat pump |
| CN104596102A (en) * | 2015-01-12 | 2015-05-06 | 深圳北纯能源科技有限公司 | Complementary energy recovery system and complementary energy recovery method based on heat pump technology |
| CN110567099A (en) * | 2019-09-23 | 2019-12-13 | 宁波奥克斯电气股份有限公司 | Method and device for preventing outdoor unit of multi-connected air conditioner from freezing and air conditioner |
-
2000
- 2000-08-03 CN CN 00246290 patent/CN2436854Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644456B (en) * | 2008-08-04 | 2011-12-07 | Lg电子株式会社 | Method for controlling hot water circulation system associated with heat pump |
| CN104596102A (en) * | 2015-01-12 | 2015-05-06 | 深圳北纯能源科技有限公司 | Complementary energy recovery system and complementary energy recovery method based on heat pump technology |
| CN110567099A (en) * | 2019-09-23 | 2019-12-13 | 宁波奥克斯电气股份有限公司 | Method and device for preventing outdoor unit of multi-connected air conditioner from freezing and air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |