CN102878736A - Air source heat pump continuous heat supply defrosting system - Google Patents
Air source heat pump continuous heat supply defrosting system Download PDFInfo
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- CN102878736A CN102878736A CN2012104208866A CN201210420886A CN102878736A CN 102878736 A CN102878736 A CN 102878736A CN 2012104208866 A CN2012104208866 A CN 2012104208866A CN 201210420886 A CN201210420886 A CN 201210420886A CN 102878736 A CN102878736 A CN 102878736A
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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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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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Abstract
The invention discloses an air source heat pump continuous heat supply defrosting system, and relates to a heat supply defrosting system. To eliminate the influence of different defrosting modes to the heat pump unit, the air source heat pump continuous heat supply defrosting system provided by the invention improves the defrosting effect and reduces the adverse effect to the indoor environment during defrosting. The air source heat pump continuous heat supply defrosting system is characterized in that a four-way reversal valve is respectively communicated with an indoor machine and a first electromagnetic valve, the indoor machine is communicated with a dry filter, the dry filter is communicated with a second electronic expansion valve, and the first electromagnetic valve is respectively communicated with a second electromagnetic valve outdoor machine; the outdoor machine is communicated with a first electronic expansion valve, the first electronic expansion valve and the second electronic expansion valve are both communicated with a fourth electromagnetic valve, and the fourth electromagnetic valve is communicated with a heat transfer device arranged on the wall face of a compressor; a second electromagnetic valve is communicated with the four-way reversal valve which is communicated with a third electromagnetic valve, and the third electromagnetic valve is respectively communicated with a gas-liquid separator and a heating pipe; and the gas-liquid separator is communicated with the compressor, and the heating pipe is connected with the heat transfer device of the compressor. The air source heat pump continuous heat supply defrosting system provided by the invention is used for continuously supplying heat by the heat pump to defrost.
Description
Technical field
The present invention relates to a kind of heat supply defrost system.
Background technology
When air source heat pump moved in the winter time, the outdoor unit of Air-Cooled Heat Pump Unit was partly understood frosting, and heating capacity is significantly decayed when frost layer runs up to a certain degree, must defrost.Defrost mode commonly used mainly contains two kinds of reverse cycle defrosting and hot gas bypass defrostings.
Reverse cycle defrosting is to adopt the most general Defrost mode.But there are a lot of shortcomings in this Defrost mode: will absorb heat from the room when 1, defrosting, room temperature can reduce by 5～6 ℃, affects indoor comfortableness; 2, switch when heating with defrosting mode, the system pressure fluctuation is violent, and the mechanical shock of generation is larger; Indoor heat exchanger is as evaporimeter when 3, defrosting, and surface temperature is low to reach-20～-25 ℃, and after recovery heated, longer a period of time can not blown hot blast; 4, when starting and stop defrosting, the cross valve commutation produces larger pneumatic noise, causes easily four-way change-over valve to reveal after the simultaneously frequent commutation of four-way change-over valve, thereby causes systematic function to reduce.The hot gas bypass defrosting mode can overcome the above-mentioned shortcoming of reverse cycle defrosting mode, system parameter variations is mild in the defrost process, heat when switching with defrosting mode less to the mechanical shock of compressor, not from the room heat-obtaining, recovery heats and namely blows out hot blast, comfortableness is better, and four-way change-over valve does not need commutation, and pneumatic noise is little.But the problem that also has other side simultaneously, such as: the defrosting energy has prolonged defrosting time from the part high-temperature exhaust air of compressor; suction superheat is low simultaneously, and still, high-temperature exhaust air pressure is higher; to compression and generation certain impact, the safety of crisis compressor etc.
How effectively in conjunction with the advantage of reverse cycle defrosting and hot gas bypass defrosting, reasonably evade its shortcoming, the variety of issue that solves in the air source heat pump defrosting process will become the key that the restriction air source heat pump is further used.
Summary of the invention
The present invention to the adverse effect of indoor environment, provides a kind of air source heat pump continuous heat supply defrost system in order to eliminate different Defrost modes to the impact of source pump performance when improving defrosting effect and reducing defrosting.
The present invention solves the problems of the technologies described above the technical scheme of taking to be: described system comprises compressor, four-way change-over valve, indoor set, device for drying and filtering, off-premises station and gas-liquid separator, the port of export of compressor is communicated with one of them port of four-way change-over valve, it is characterized in that described system also comprises electrical heating wire, heating tube, the first magnetic valve, the second magnetic valve, the 3rd magnetic valve, the 4th magnetic valve, the first electric expansion valve, the second electric expansion valve and heat-exchanger rig, one in three ports of the residue of four-way change-over valve is communicated with the entrance point of indoor set and the entrance point of the first magnetic valve respectively;
The port of export of indoor set is communicated with the entrance point of device for drying and filtering, the port of export of device for drying and filtering is communicated with the entrance point of the second electric expansion valve, the port of export of the first magnetic valve is communicated with the entrance point of the second magnetic valve and the import/export end of off-premises station respectively, the going out of off-premises station/entrance point is communicated with the entrance point of the first electric expansion valve, the first electric expansion valve and the second electric expansion valve all are communicated with the entrance point of the 4th magnetic valve, and the port of export of the 4th magnetic valve is communicated with heat-exchanger rig on the wall that is arranged on compressor;
One in two ports of the port of export of the second magnetic valve and four-way change-over valve residue is communicated with, another entrance point with the 3rd magnetic valve in two ports of four-way change-over valve residue is communicated with, the port of export of the 3rd magnetic valve is communicated with the entrance point of gas-liquid separator and an end of heating tube respectively, the port of export of gas-liquid separator is communicated with the entrance point of compressor, the other end of heating tube is connected with the heat-exchanger rig of compressor, and heating tube is provided with electrical heating wire.
The present invention has following beneficial effect: system architecture advantages of simple of the present invention, and the cost cost is low; Avoid the four-way change-over valve commutation in the reverse cycle defrosting process, reduced the pneumatic noise of four-way change-over valve and the possibility of leakage.In the defrost process, simultaneously to indoor heating, avoided at least from the indoor set heat-obtaining, therefore effectively improved thermal comfort indoor in the defrost process.In the defrost process, the high-pressure refrigerant of circulation indoor set and off-premises station is realized respectively throttling, therefore can by regulating throttle degree, change the refrigerant flow in each self loop, thereby effectively shorten defrosting time.Utilize heat-exchanger rig to store the used heat of compressor, be used for heating low-temperature refrigerant, thereby realized Waste Heat Recovery.Utilize the used heat of compressor to heat low-temperature refrigerant, thereby realized Waste Heat Recovery.Electrical heating wire can improve the reliability of system effectively simultaneously, has guaranteed the security of system operation.
Description of drawings
Fig. 1 is overall structure schematic diagram of the present invention.
The specific embodiment
The specific embodiment one: present embodiment is described in conjunction with Fig. 1, the described system of present embodiment comprises compressor 1, four-way change-over valve 2, indoor set 3, device for drying and filtering 4, off-premises station 5 and gas-liquid separator 6, the port of export of compressor 1 is communicated with one of them port of four-way change-over valve 2, it is characterized in that described system also comprises electrical heating wire 7, heating tube 8, the first magnetic valve 9, the second magnetic valve 10, the 3rd magnetic valve 11, the 4th magnetic valve 12, the first electric expansion valve 13, the second electric expansion valve 14 and heat-exchanger rig, one in three ports of the residue of four-way change-over valve 2 is communicated with the entrance point of indoor set 3 and the entrance point of the first magnetic valve 9 respectively;
The port of export of indoor set 3 is communicated with the entrance point of device for drying and filtering 4, the port of export of device for drying and filtering 4 is communicated with the entrance point of the second electric expansion valve 14, the port of export of the first magnetic valve 9 is communicated with the entrance point of the second magnetic valve 10 and the import/export end of off-premises station 5 respectively, the going out of off-premises station 5/entrance point is communicated with the entrance point of the first electric expansion valve 13, the first electric expansion valve 13 and the second electric expansion valve 14 all are communicated with the entrance point of the 4th magnetic valve 12, and the port of export of the 4th magnetic valve 12 is communicated with heat-exchanger rig on the wall that is arranged on compressor 1;
One in two ports of the port of export of the second magnetic valve 10 and four-way change-over valve 2 residues is communicated with, another entrance point with the 3rd magnetic valve 11 in two ports of four-way change-over valve 2 residues is communicated with, the port of export of the 3rd magnetic valve 11 is communicated with the entrance point of gas-liquid separator 6 and an end of heating tube 8 respectively, the port of export of gas-liquid separator 6 is communicated with the entrance point of compressor 1, the other end of heating tube 8 is connected with the heat-exchanger rig of compressor 1, and heating tube 8 is provided with electrical heating wire 7.
The specific embodiment two: present embodiment is described in conjunction with Fig. 1; the described heat-exchanger rig of present embodiment comprises heat-accumulator tank 15 and heat exchanger tube 16; heat exchanger tube 16 is housed in the heat-accumulator tank 15; advantage is to utilize heat-accumulator tank effectively to store the used heat of compressor; for low-temperature refrigerant in the heat exchanger tube provides sufficient heat, can effectively protect the compressor steady operation.Other embodiment is identical with the specific embodiment one.
Operation principle: when native system is in normal Heating State, open the second magnetic valve 10, the 3rd magnetic valve 11, the first electric expansion valve 13 and the second electric expansion valve 14, close the first magnetic valve 9 and the 4th magnetic valve 12, the high temperature refrigerant that compressor 1 is discharged is through arriving indoor set 3 heat supplies behind the four-way change-over valve 2, pass through afterwards device for drying and filtering 4, again by the second electric expansion valve 14 with the first electric expansion valve 13 is rear is become low-temp low-pressure gas-liquid two-phase cold-producing medium by throttling, enter into off-premises station 5 interior heat-obtainings and become the low-temp low-pressure gaseous refrigerant, get back to the 3rd magnetic valve 11 of flowing through behind the four-way change-over valve 2 by the second magnetic valve 10 of opening again and get back to gas-liquid separator 6, get back at last the suction end of compressor 1, thereby finish indoor set 3 for thermal cycle;
When native system is in defrost state, open the first magnetic valve 9, the 4th magnetic valve 12, the first electric expansion valve 13 and the second electric expansion valve 14, close the second magnetic valve 10 and the 3rd magnetic valve 11, the high temperature refrigerant that compressor 1 is discharged is through being divided into the two-way operation behind the four-way change-over valve 2: wherein one the tunnel, the high temperature refrigerant that compressor 1 is discharged is through arriving indoor set 3 heat supplies, throttling in the second electric expansion valve 14 behind the device for drying and filtering 4 of then flowing through behind the four-way change-over valve 2; Another road cold-producing medium then flows in the off-premises station 5 by the first magnetic valve 9, and heat radiation is melted and evaporation off-premises station 5 wall frost layers in off-premises station 5, flows to afterwards 13 throttlings in the first electric expansion valve; The 4th magnetic valve 12 of flowing through after cold-producing medium after the two-way throttling converges arrives heat-exchanger rig on compressors 1 wall and the wall of compressor 1 carries out heat exchange.At this, become the gaseous refrigerant of low-temp low-pressure behind the used heat of the gas-liquid two-phase cold-producing medium of low-temp low-pressure absorption compressor 1, get back to afterwards the import department of gas-liquid separator 6; When the used heat of compressor 1 can not satisfy the low-temperature low-pressure refrigerant absorbing heat, then open the electrical heating wire 7 further heating and cooling agent on the heating tube 8, thereby guaranteed the fully evaporation of low-temperature low-pressure refrigerant.In addition, pass through to change the aperture of the first electric expansion valve 13 and the second electric expansion valve 14 in the defrost process, can effectively regulate the refrigerant flow of flow through indoor set 3 and off-premises station 5, thereby can effectively shorten defrosting time and improve indoor heating environment in the defrost process.
When defrosting finishes, again open the second magnetic valve 10, the 3rd magnetic valve 11 and the first electric expansion valve 13, close the first magnetic valve 9, the 4th magnetic valve 12 and the second electric expansion valve 14.Native system is in Heating State again, because the copper pipe wall surface temperature of indoor set 3 is higher in the defrost process, it is shorter therefore to recover heating time, even defrosting finishes rear just normally heat supply.
Claims (2)
1. air source heat pump continuous heat supply defrost system, described system comprises compressor (1), four-way change-over valve (2), indoor set (3), device for drying and filtering (4), off-premises station (5) and gas-liquid separator (6), the port of export of compressor (1) is communicated with one of them port of four-way change-over valve (2), it is characterized in that described system also comprises electrical heating wire (7), heating tube (8), the first magnetic valve (9), the second magnetic valve (10), the 3rd magnetic valve (11), the 4th magnetic valve (12), the first electric expansion valve (13), the second electric expansion valve (14) and heat-exchanger rig, one in three ports of the residue of four-way change-over valve (2) is communicated with the entrance point of indoor set (3) and the entrance point of the first magnetic valve (9) respectively;
The port of export of indoor set (3) is communicated with the entrance point of device for drying and filtering (4), the port of export of device for drying and filtering (4) is communicated with the entrance point of the second electric expansion valve (14), the port of export of the first magnetic valve (9) is communicated with the entrance point of the second magnetic valve (10) and the import/export end of off-premises station (5) respectively, the going out of off-premises station (5)/entrance point is communicated with the entrance point of the first electric expansion valve (13), the first electric expansion valve (13) and the second electric expansion valve (14) all are communicated with the entrance point of the 4th magnetic valve (12), and the port of export of the 4th magnetic valve (12) is communicated with heat-exchanger rig on the wall that is arranged on compressor (1);
One in two ports of the port of export of the second magnetic valve (10) and four-way change-over valve (2) residue is communicated with, another entrance point with the 3rd magnetic valve (11) in two ports of four-way change-over valve (2) residue is communicated with, the port of export of the 3rd magnetic valve (11) is communicated with the entrance point of gas-liquid separator (6) and an end of heating tube (8) respectively, the port of export of gas-liquid separator (6) is communicated with the entrance point of compressor (1), the other end of heating tube (8) is connected with the heat-exchanger rig of compressor (1), and heating tube (8) is provided with electrical heating wire (7).
2. described air source heat pump continuous heat supply defrost system according to claim 1 is characterized in that described heat-exchanger rig comprises heat-accumulator tank (15) and heat exchanger tube (16), is equipped with heat exchanger tube (16) in the heat-accumulator tank (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104208866A CN102878736A (en) | 2012-10-29 | 2012-10-29 | Air source heat pump continuous heat supply defrosting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104208866A CN102878736A (en) | 2012-10-29 | 2012-10-29 | Air source heat pump continuous heat supply defrosting system |
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| CN102878736A true CN102878736A (en) | 2013-01-16 |
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| CN2012104208866A Pending CN102878736A (en) | 2012-10-29 | 2012-10-29 | Air source heat pump continuous heat supply defrosting system |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307804A (en) * | 2013-06-14 | 2013-09-18 | 上海海立睿能环境技术有限公司 | Defrosting system for heat pump |
| CN104075512A (en) * | 2014-06-10 | 2014-10-01 | 烟台顿汉布什工业有限公司 | Full-liquid type air cooling and heating pump set |
| CN104110920A (en) * | 2014-07-04 | 2014-10-22 | 西安交通大学 | Air-source heat pump system for recycling waste heat of compressor |
| CN104422216A (en) * | 2013-08-28 | 2015-03-18 | 海尔集团公司 | Method for defrosting an air conditioning system |
| CN104422215A (en) * | 2013-08-28 | 2015-03-18 | 海尔集团公司 | Air conditioning system and defrosting method for same |
| CN104567074A (en) * | 2013-10-28 | 2015-04-29 | 珠海格力电器股份有限公司 | Air conditioner circulating device and control method thereof |
| CN104833152A (en) * | 2015-05-29 | 2015-08-12 | 上海交通大学 | Liquid impact preventing air conditioner defrosting system |
| CN105115189A (en) * | 2015-09-09 | 2015-12-02 | 宁波天海制冷设备有限公司 | Heat pump for grain drier |
| CN105605841A (en) * | 2016-02-02 | 2016-05-25 | 广东美的制冷设备有限公司 | Air conditioning system and defrosting control method thereof |
| CN105674519A (en) * | 2014-11-17 | 2016-06-15 | 青岛海尔空调器有限总公司 | Air conditioning system and defrosting control method |
| CN105698450A (en) * | 2016-02-02 | 2016-06-22 | 广东美的制冷设备有限公司 | Air conditioner system and defrosting control method of air conditioner system |
| CN106225293A (en) * | 2016-08-24 | 2016-12-14 | 常州市武进南夏墅苏南锻造有限公司 | Heat pump type air conditioner |
| CN106288565A (en) * | 2016-10-31 | 2017-01-04 | 广东美的制冷设备有限公司 | Air-conditioning does not shut down defrosting system and method and air-conditioning |
| CN106765983A (en) * | 2017-01-10 | 2017-05-31 | 美的集团武汉制冷设备有限公司 | Defrosting control method, defrosting control system and air-conditioner |
| CN108386980A (en) * | 2018-03-05 | 2018-08-10 | 奥克斯空调股份有限公司 | A kind of air-conditioning defrosting control method and device |
| CN110307592A (en) * | 2019-06-17 | 2019-10-08 | Tcl空调器(中山)有限公司 | A kind of defrosting air-conditioning and control method |
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| CN102753911A (en) * | 2010-02-10 | 2012-10-24 | 松下电器产业株式会社 | Heat storage device, and air-conditioner provided with same |
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| US4279129A (en) * | 1978-10-02 | 1981-07-21 | Carrier Corporation | Hot gas defrost system |
| JPH1194405A (en) * | 1997-09-19 | 1999-04-09 | Fujitsu General Ltd | Air conditioner |
| JP2002006197A (en) * | 2000-06-26 | 2002-01-09 | Nidec Copal Corp | Lens driving device for camera |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307804A (en) * | 2013-06-14 | 2013-09-18 | 上海海立睿能环境技术有限公司 | Defrosting system for heat pump |
| CN104422216B (en) * | 2013-08-28 | 2017-03-22 | 海尔集团公司 | Method for defrosting an air conditioning system |
| CN104422216A (en) * | 2013-08-28 | 2015-03-18 | 海尔集团公司 | Method for defrosting an air conditioning system |
| CN104422215A (en) * | 2013-08-28 | 2015-03-18 | 海尔集团公司 | Air conditioning system and defrosting method for same |
| CN104422215B (en) * | 2013-08-28 | 2019-04-19 | 海尔集团公司 | The Defrost method of air-conditioning system and air-conditioning system |
| CN104567074A (en) * | 2013-10-28 | 2015-04-29 | 珠海格力电器股份有限公司 | Air conditioner circulating device and control method thereof |
| CN104567074B (en) * | 2013-10-28 | 2017-11-14 | 珠海格力电器股份有限公司 | Air conditioner circulating device and control method thereof |
| CN104075512A (en) * | 2014-06-10 | 2014-10-01 | 烟台顿汉布什工业有限公司 | Full-liquid type air cooling and heating pump set |
| CN104110920A (en) * | 2014-07-04 | 2014-10-22 | 西安交通大学 | Air-source heat pump system for recycling waste heat of compressor |
| CN105674519A (en) * | 2014-11-17 | 2016-06-15 | 青岛海尔空调器有限总公司 | Air conditioning system and defrosting control method |
| CN104833152B (en) * | 2015-05-29 | 2017-08-08 | 上海交通大学 | A kind of liquid impact prevention air conditioner defrosting system |
| CN104833152A (en) * | 2015-05-29 | 2015-08-12 | 上海交通大学 | Liquid impact preventing air conditioner defrosting system |
| CN105115189A (en) * | 2015-09-09 | 2015-12-02 | 宁波天海制冷设备有限公司 | Heat pump for grain drier |
| CN105698450A (en) * | 2016-02-02 | 2016-06-22 | 广东美的制冷设备有限公司 | Air conditioner system and defrosting control method of air conditioner system |
| CN105605841A (en) * | 2016-02-02 | 2016-05-25 | 广东美的制冷设备有限公司 | Air conditioning system and defrosting control method thereof |
| CN106225293A (en) * | 2016-08-24 | 2016-12-14 | 常州市武进南夏墅苏南锻造有限公司 | Heat pump type air conditioner |
| CN106288565A (en) * | 2016-10-31 | 2017-01-04 | 广东美的制冷设备有限公司 | Air-conditioning does not shut down defrosting system and method and air-conditioning |
| CN106765983A (en) * | 2017-01-10 | 2017-05-31 | 美的集团武汉制冷设备有限公司 | Defrosting control method, defrosting control system and air-conditioner |
| CN108386980A (en) * | 2018-03-05 | 2018-08-10 | 奥克斯空调股份有限公司 | A kind of air-conditioning defrosting control method and device |
| CN108386980B (en) * | 2018-03-05 | 2020-06-02 | 奥克斯空调股份有限公司 | Air conditioner defrosting control method and device |
| CN110307592A (en) * | 2019-06-17 | 2019-10-08 | Tcl空调器(中山)有限公司 | A kind of defrosting air-conditioning and control method |
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Application publication date: 20130116 |