CN1337552A - Ice preventer for wind cooled heat pump air conditioner - Google Patents
Ice preventer for wind cooled heat pump air conditioner Download PDFInfo
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- CN1337552A CN1337552A CN 00120981 CN00120981A CN1337552A CN 1337552 A CN1337552 A CN 1337552A CN 00120981 CN00120981 CN 00120981 CN 00120981 A CN00120981 A CN 00120981A CN 1337552 A CN1337552 A CN 1337552A
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- check valve
- heat exchanger
- capillary
- heat converter
- outdoor heat
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Abstract
The present invention discloses an anti-icing device for air-cooled heat pump type air conditioner, which characterized by that an auxiliary heat exchanger is set in the lower portion of outdoor heat exchanger of said air-conditioner, and between the outdoor heat exchanger and auxilairy ehat exchanger the capillary and non-return valve parallelly-connected component can be added, and said non-return valve can allow the refrigerant to flow into auxiliary heat exchanger from outdoor heat exchanger, and between the auxiliary heat exchanger and pipeline coming into indoor heat-exchanger the capillary and non-return valve parallelly-connected componnet can be added, the non-return valve can allow the refrigerant to flow into auxiliary heat exchange from indoor heat exchanger via pipeline. Said auxiliary heat-exchanger has no frost in the heating process, can prevent bottom pipeline of heat exchanger from icing, and its heating efficiency is high.
Description
The present invention 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 objective of the invention is to design a kind of anti-icing equipment that adds 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.
Content of the present invention: 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.
Advantage of the present invention:
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 present invention 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 a schematic diagram of the present invention;
Fig. 3 is existing outdoor heat converter structural representation;
Fig. 4 is outdoor heat converter of the present invention, secondary unit and check valve, capillary paralleling assembly and pipe connecting structure schematic diagram.
Further specify the present invention 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 present invention 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 present invention has 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 00120981 CN1337552A (en) | 2000-08-03 | 2000-08-03 | Ice preventer for wind cooled heat pump air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00120981 CN1337552A (en) | 2000-08-03 | 2000-08-03 | Ice preventer for wind cooled heat pump air conditioner |
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| Publication Number | Publication Date |
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| CN1337552A true CN1337552A (en) | 2002-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00120981 Pending CN1337552A (en) | 2000-08-03 | 2000-08-03 | Ice preventer for wind cooled heat pump air conditioner |
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| CN (1) | CN1337552A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101004302B (en) * | 2006-01-25 | 2011-05-04 | 武汉凯龙技术开发有限责任公司 | Frostless air-source heat pump |
| CN104254751A (en) * | 2012-04-27 | 2014-12-31 | 大金工业株式会社 | Heat exchanger |
| CN107101275A (en) * | 2017-06-01 | 2017-08-29 | 青岛海尔空调器有限总公司 | A kind of air conditioner and its control method |
| CN107702271A (en) * | 2017-08-30 | 2018-02-16 | 青岛海尔空调器有限总公司 | The fault detect of air-conditioning and its supercooling tube group and processing method |
| CN110762642A (en) * | 2019-10-09 | 2020-02-07 | 青岛海尔空调电子有限公司 | Outdoor heat exchanger, air conditioning system and control method thereof |
| CN110762889A (en) * | 2019-10-23 | 2020-02-07 | 广东纽恩泰新能源科技发展有限公司 | Air source heat pump system for preventing frost accumulation |
-
2000
- 2000-08-03 CN CN 00120981 patent/CN1337552A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101004302B (en) * | 2006-01-25 | 2011-05-04 | 武汉凯龙技术开发有限责任公司 | Frostless air-source heat pump |
| CN104254751A (en) * | 2012-04-27 | 2014-12-31 | 大金工业株式会社 | Heat exchanger |
| CN104254751B (en) * | 2012-04-27 | 2016-11-23 | 大金工业株式会社 | Heat exchanger |
| US9845994B2 (en) | 2012-04-27 | 2017-12-19 | Daikin Industries, Ltd. | Heat exchanger configured to accelerate discharge of liquid refrigerant from lowest heat exchange section |
| US10345047B2 (en) | 2012-04-27 | 2019-07-09 | Daikin Industries, Ltd. | Heat exchanger configured to accelerate discharge of liquid refrigerant from lowest heat exchange section |
| US10520256B2 (en) | 2012-04-27 | 2019-12-31 | Daikin Industries, Ltd. | Heat exchanger configured to accelerate discharge of liquid refrigerant from lowest heat exchange section |
| CN107101275A (en) * | 2017-06-01 | 2017-08-29 | 青岛海尔空调器有限总公司 | A kind of air conditioner and its control method |
| CN107702271A (en) * | 2017-08-30 | 2018-02-16 | 青岛海尔空调器有限总公司 | The fault detect of air-conditioning and its supercooling tube group and processing method |
| CN110762642A (en) * | 2019-10-09 | 2020-02-07 | 青岛海尔空调电子有限公司 | Outdoor heat exchanger, air conditioning system and control method thereof |
| CN110762889A (en) * | 2019-10-23 | 2020-02-07 | 广东纽恩泰新能源科技发展有限公司 | Air source heat pump system for preventing frost accumulation |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |