CN203964488U - Adopt the air source heat pump defrosting device of hot-air evaporation initial liquid drop - Google Patents
Adopt the air source heat pump defrosting device of hot-air evaporation initial liquid drop Download PDFInfo
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- CN203964488U CN203964488U CN201420346944.XU CN201420346944U CN203964488U CN 203964488 U CN203964488 U CN 203964488U CN 201420346944 U CN201420346944 U CN 201420346944U CN 203964488 U CN203964488 U CN 203964488U
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Abstract
The utility model discloses a kind of air source heat pump defrosting device that adopts hot-air evaporation initial liquid drop, comprise refrigerant loop and air loop.Refrigerant loop comprises compressor, cross valve, indoor heat exchanger, the first check valve, the second check valve, the 3rd check valve, the 4th check valve, the first magnetic valve, the second magnetic valve, the 3rd magnetic valve, reservoir, device for drying and filtering, electric expansion valve, outdoor heat exchanger, gas-liquid separator and air heat exchanger, and air loop comprises outdoor heat exchanger, air heat exchanger, the first MOD, blower fan, the second MOD, the 3rd MOD and wind pushing nozzle.The utility model defrosting time is short, and defrosting heat consumption is little, defrost process can with heat process and carry out simultaneously, do not affect the thermal comfort of air-conditioning system, cross valve need not commutate, and has improved heat pump reliability.Meanwhile, this device is excessively cold for realizing cold-producing medium under cooling condition summer, has improved air source heat pump system specific refrigerating effect and refrigerating efficiency.
Description
Technical field
The utility model belongs to refrigerated air-conditioning system Design and manufacture field, relates to a kind of air source heat pump defrosting device that adopts hot-air evaporation initial liquid drop.
Background technology
Air source heat pump because thering are energy-saving and environmental protection, take into account cold and heat supply, use the advantage such as flexible to be used widely in China most areas.But there is the problem of the surperficial frosting of outdoor heat exchanger (evaporimeter) when heating operation in air source heat pump in the winter time, due to formation and the growth of frost layer, heat transfer resistance and air flow resistance between heat exchanger surface and air are strengthened, cause heat exchanger reduction of heat exchange efficiency, source pump hydraulic performance decline, even cisco unity malfunction.Therefore air source heat pump moves defrosting in good time under frozen condition.
At present, conventional Defrost method is reverse cycle defrosting and hot gas bypass defrosting.In reverse cycle defrosting process, because cross valve frequently commutates, cause refrigeration system compressor to occur " oil of running quickly " phenomenon, reliability and the service life of reducing compressor; Meanwhile, when defrosting, cold-producing medium will for defrosting, cause the rapid fluctuation of heating system temperature by draw heat from heating system, affects the thermal comfort of air-conditioning system.The heat of hot gas bypass defrosting is mainly from compressor wasted work, thereby defrosting speed is slower, and easily causes in defrost process compressor air suction band night.Existing Defrost method is all just to launch defrosting at Frosting rate to certain altitude simultaneously, for melting frost layer and evaporation defrosting water, need to consume a large amount of heats and time, thereby cause air source heat pump decrease in efficiency in the whole service cycle.
The utility model creator finds that in early-stage Study the frost layer on the outdoor finned tube exchanger of air source heat pump surface is (growth course of frost layer comprises: droplets agglomerate, drop freeze to form hoar crystal, frost crystal growth and frost layer and fully grow) that the droplet growth that condenses based on initial on its surface gets up, these droplet sizes are only 0.01 grade, if can these drops be removed to i.e. Frosting rate capable of blocking before drop freezes to form hoar crystal.Evaporation of water is an efficient heat and mass transfer process, is to remove the effective means of drop, and evaporates the small initial condensation drop of these sizes and only need to consume less heat.Therefore, utility model goes out a kind of air-source Defrost method that can realize initial condensation drop evaporation at the frosting process initial stage to improving the operational efficiency of heat pump, reduces defrosting energy consumption and time significant.
Utility model content
technical problem:the utility model provides that a kind of heat consumption is few, defrosting time is short, can solve the air source heat pump defrosting device of the employing hot-air evaporation initial liquid drop of the drop phenomenon of condensing that the air source heat pump frosting process initial stage occurs.
technical scheme:a kind of air source heat pump defrosting device that adopts hot-air evaporation initial liquid drop of the present utility model, comprises refrigerant loop and air loop;
Wherein refrigerant loop comprises compressor, cross valve, indoor heat exchanger, the first check valve, the second check valve, the 3rd check valve, the 4th check valve, the first magnetic valve, the second magnetic valve, the 3rd magnetic valve, reservoir, device for drying and filtering, electric expansion valve, outdoor heat exchanger, gas-liquid separator, air heat exchanger and relevant connection pipeline, and outdoor heat exchanger and air heat exchanger are also the parts of air loop simultaneously; On cross valve, be provided with cross valve first input end, cross valve the first output, cross valve the second input and cross valve the second output, on indoor heat exchanger, be provided with indoor heat exchanger input and indoor heat exchanger output, on outdoor heat exchanger, be provided with outdoor heat exchanger input and outdoor heat exchanger output, on air heat exchanger, be provided with air heat exchanger input and air heat exchanger output, wherein outdoor heat exchanger and air heat exchanger are also the parts of air loop simultaneously
In refrigerant loop, the output of compressor is connected with cross valve first input end, cross valve the first output is connected with indoor heat exchanger input, indoor heat exchanger output is divided into two-way, one tunnel is connected with the entrance of the first check valve, the outlet of another Lu Yu tri-check valves connects, the outlet of the first check valve is divided into three tunnels, one tunnel is connected with the outlet of the second check valve, first magnetic valve of leading up to is connected with the input of reservoir, second magnetic valve of separately leading up to is connected with air heat exchanger input, air heat exchanger output is connected with the input of reservoir by the 3rd magnetic valve, the output of reservoir connects device for drying and filtering successively by pipeline, after electric expansion valve, be divided into two-way, one tunnel is connected with the import of the 4th check valve, the entrance of another Lu Yu tri-check valves connects, the outlet of the 4th check valve is connected with outdoor heat exchanger input, outdoor heat exchanger input is also connected with the import of the second check valve simultaneously, outdoor heat exchanger output is connected with cross valve the second input, cross valve the second output is connected with the input of gas-liquid separator, the output of gas-liquid separator is connected with the input of compressor,
Air loop comprises outdoor heat exchanger, air heat exchanger, the first MOD, blower fan, the second MOD, the 3rd MOD, wind pushing nozzle and relevant connection pipeline; In air loop, air flow in air heat exchanger is consistent with the air flow in outdoor heat exchanger, the air inlet place of air heat exchanger is provided with the first MOD, the air outlet of air heat exchanger is by airduct connecting fan, the 3rd MOD and wind pushing nozzle successively, on the airduct sidewall between blower fan and the 3rd MOD, be provided with the second MOD and be communicated with external environment, the air outlet of wind pushing nozzle just arranges outdoor heat exchanger air inlet simultaneously.
In the utility model device, when the operation of heat pump winter heating defrosts, described the second magnetic valve (9), the 3rd magnetic valve, the first MOD, blower fan and the 3rd MOD are opened, and the first magnetic valve, the second MOD are closed.
By controlling the switch of the first magnetic valve, the second magnetic valve, the 3rd magnetic valve, the first MOD, the second MOD, the 3rd MOD and blower fan, can realize and under winter heating's operating mode, add hot-air and frosting process initial condensation drop and summer realize cold-producing medium under cooling condition and cross the several functions such as cold for evaporating.
In the utility model device, when the operation of heat pump refrigeration mode in summer: the first magnetic valve and the 3rd MOD are closed, and the second magnetic valve, the 3rd magnetic valve, the first MOD, the second MOD and blower fan are opened.Now, air heat exchanger served as cold heat exchanger, cold-producing medium in air heat exchanger with air heat-exchange realized cold, thereby improve heat pump specific refrigerating effect and refrigerating efficiency.
In in the preferred version of the utility model device, the hot blast direct effect that wind pushing nozzle is discharged is to the fin surface of outdoor heat exchanger.
In the utility model device, origin of heat when Defrost is crossed cold institute liberated heat in cold-producing medium, does not need extra heat exhaustion.
When the operation of heat pump refrigeration mode in summer: in refrigerant loop, the refrigerant gas of low-temp low-pressure is sucked by compressor from gas-liquid separator, the superheated vapor that becomes HTHP after compression is discharged, enter outdoor heat exchanger through cross valve, in outdoor heat exchanger, cold-producing medium is emitted heat and is condensed into after liquid, enter air heat exchanger through the second check valve and the second magnetic valve again, in air heat exchanger, refrigerant liquid and air heat-exchange, cold-producing medium was realized cold, cold-producing medium from air heat exchanger out, successively through the 3rd magnetic valve, reservoir, device for drying and filtering, after electric expansion valve and the 3rd check valve, enter indoor heat exchanger, cold-producing medium absorbs after heat of vaporization becomes superheated vapor and flows out in indoor heat exchanger, enter gas-liquid separator through cross valve, and then be inhaled into compressor, complete kind of refrigeration cycle.In air loop, air by blower fan from the first MOD air amount heat exchanger, in air heat exchanger with cold-producing medium heat exchange after, from second MOD discharge.
When air source heat pump winter heating mode operation: the first closed electromagnetic valve, the second magnetic valve, the 3rd magnetic valve are opened, and the first MOD, the second MOD, the 3rd MOD and blower fan are all closed.In refrigerant loop, in gas-liquid separator, the refrigerant gas of low-temp low-pressure is sucked by compressor, after compression, discharge, enter indoor heat exchanger through cross valve, cold-producing medium is condensed into after liquid in indoor heat exchanger, through the first check valve, the second magnetic valve enters air heat exchanger, cold-producing medium adds hot-air with air heat-exchange in air heat exchanger, realized cold, cold-producing medium enters reservoir through the 3rd magnetic valve from air heat exchanger out, cold-producing medium is become gas-liquid two-phase with electric expansion valve by throttling through super-dry filter from reservoir out, enter outdoor heat exchanger through the 4th check valve, cold-producing medium becomes superheated vapor in outdoor heat exchanger with after air heat-exchange, cold-producing medium enters gas-liquid separator through cross valve from outdoor heat exchanger out, and then be inhaled into compressor, complete and heat circulation.In air loop, be stored in the cooled dose of heating of air in air heat exchanger.
In the time that outdoor heat exchanger surface occurs that frosting initial procedure is condensed drop, the first MOD, the 3rd MOD and blower fan are opened, the second MOD is closed, be stored in hot-air in air heat exchanger blows to outdoor heat exchanger fast from wind pushing nozzle fin surface by the 3rd MOD, the drop condensing for evaporating fin surface frosting initial procedure.Due to only 0.01 millimeter of rank of fin surface drop size, hot-air can evaporate drop easily, thereby has blocked the growth of frost layer.After drop evaporation completely, close the first MOD, the 3rd MOD and blower fan.In this process, cold-producing medium heats the normal operation of circulation.
beneficial effect:the utility model, compared with the prior aries such as inverse defrosting, has the following advantages:
1, compare inverse defrosting method, start to finish to defrosting from defrosting, cross valve needs commutation, and pressure balance, the equalized temperature of system are all destroyed, a large amount of energy losses that cause.The utility model is for the drop that condenses of frosting initial procedure, and because now drop size is little, only needing to consume fraction heat can be evaporated, although the frequency of defrosting can increase, but because frost still exists with drop form, more easily remove, thereby can reduce total defrosting energy consumption and time.
2, simultaneously in defrost process, utilize cold-producing medium to cross cold liberated heat and add hot-air for evaporating the drop that condenses of frosting initial procedure, heating circulation can normally move, do not affect the thermal comfort of air-conditioning system, do not need to improve extra heat for defrosting, improved reliability and the heating efficiency of heat pump yet.
3, can serve as cold heat exchanger for the air heat exchanger that adds hot-air defrosting in summer winter, cold-producing medium was realized cold at air heat exchanger, thereby improved air source heat pump specific refrigerating effect and the refrigerating efficiency in summer.
Brief description of the drawings
Fig. 1 is the schematic diagram that the utility model adopts the air source heat pump defrosting device of hot-air evaporation initial liquid drop.
In figure, have: compressor 1, cross valve 2, cross valve first input end 2a, cross valve the first output 2b, cross valve the second input 2c, cross valve the second output 2d, indoor heat exchanger 3, indoor heat exchanger input 3a, indoor heat exchanger output 3b, the first check valve 4, the second check valve 5, the 3rd check valve 6, the 4th check valve 7, the first magnetic valve 8, the second magnetic valve 9, the 3rd magnetic valve 10, reservoir 11, device for drying and filtering 12, electric expansion valve 13, outdoor heat exchanger 14, outdoor heat exchanger input 14a, outdoor heat exchanger output 14b, gas-liquid separator 15, air heat exchanger 16, air heat exchanger input 16a, air heat exchanger output 16b, the first MOD 17, blower fan 18, the second MOD 19, the 3rd MOD 20 and wind pushing nozzle 21.
Detailed description of the invention
Further illustrate the technical solution of the utility model below in conjunction with Figure of description and embodiment.
The utility model proposes a kind of air source heat pump defrosting device that adopts hot-air evaporation initial liquid drop, comprise refrigerant loop and air loop.Concrete method of attachment is:
In refrigerant loop, the output of compressor 1 is connected with cross valve first input end 2a, cross valve the first output 2b is connected with indoor heat exchanger input 3a, indoor heat exchanger output 3b is divided into two-way, one tunnel is connected with the entrance of the first check valve 4, the outlet of another Lu Yu tri-check valves 6 connects, the outlet of the first check valve 4 is divided into three tunnels, one tunnel is connected with the outlet of the second check valve 5, first magnetic valve 8 of leading up to is connected with the input of reservoir 11, second magnetic valve 9 of separately leading up to is connected with air heat exchanger input 16a, air heat exchanger output 16b is connected with the input of reservoir 11 by the 3rd magnetic valve 10, the output of reservoir 11 connects device for drying and filtering 12 successively by pipeline, after electric expansion valve 13, be divided into two-way, one tunnel is connected with the import of the 4th check valve 7, the entrance of another Lu Yu tri-check valves 6 connects, the outlet of described the 4th check valve 7 is connected with outdoor heat exchanger input 14a, outdoor heat exchanger input 14a is also connected with the import of the second check valve 5 simultaneously, outdoor heat exchanger output 14b is connected with cross valve the second input 2c, cross valve the second output 2d is connected with the input of gas-liquid separator 15, the output of gas-liquid separator 15 is connected with the input of compressor 1.
In air loop, air flow in air heat exchanger 16 is consistent with the air flow in outdoor heat exchanger 14, the air inlet place of air heat exchanger 16 is provided with the first MOD 17, the air outlet of air heat exchanger 16 is by the airduct wind pushing nozzle 21 of connecting fan 18, the 3rd MOD 20 and air supply duct end successively, on the airduct sidewall between blower fan 18 and the 3rd MOD 20, be provided with the second MOD 19 and be communicated with external environment, the air outlet of wind pushing nozzle 21 is just to outdoor heat exchanger 14 air inlet settings simultaneously.
When the operation of air source heat pump refrigeration mode in summer: the first magnetic valve 8 and the 3rd MOD 20 are closed, and the second magnetic valve 9, the 3rd magnetic valve 10, the first MOD 17, the second MOD 19 and blower fan 18 are opened.In refrigerant loop, the refrigerant gas of low-temp low-pressure is sucked by compressor 1 from gas-liquid separator 15, the superheated vapor that becomes HTHP after compression is discharged, enter outdoor heat exchanger 14 through cross valve 2, in outdoor heat exchanger 14, cold-producing medium is emitted heat and is condensed into after liquid, enter air heat exchanger 16 through the second check valve 5 and the second magnetic valve 9 again, in air heat exchanger 16, refrigerant liquid and air heat-exchange, cold-producing medium was realized cold, cold-producing medium from air heat exchanger 16 out, successively through the 3rd magnetic valve 10, reservoir 11, device for drying and filtering 12, after electric expansion valve 13 and the 3rd check valve 6, enter indoor heat exchanger 3, cold-producing medium absorbs after heat of vaporization becomes superheated vapor and flows out in indoor heat exchanger 3, enter gas-liquid separator 15 through cross valve 2, and then be inhaled into compressor 1, complete kind of refrigeration cycle.In air loop, air by blower fan 18 from the first MOD 17 air amount heat exchangers 16, in air heat exchanger 16 with cold-producing medium heat exchange after, discharge from the second MOD 19.
When air source heat pump winter heating mode operation: the first magnetic valve 8 cuts out, and the second magnetic valve 9, the 3rd magnetic valve 10 are opened, and the first MOD 17, the second MOD 19, the 3rd MOD 20 and blower fan 18 are all closed.In refrigerant loop, in gas-liquid separator 15, the refrigerant gas of low-temp low-pressure is sucked by compressor 1, after compression, discharge, enter indoor heat exchanger 3 through cross valve 2, cold-producing medium is condensed into after liquid in indoor heat exchanger 3, through the first check valve 4, the second magnetic valve 9 enters air heat exchanger 16, cold-producing medium adds hot-air with air heat-exchange in air heat exchanger 16, realized cold, cold-producing medium enters reservoir 11 through the 3rd magnetic valve 10 from air heat exchanger 16 out, cold-producing medium is become gas-liquid two-phase with electric expansion valve 13 by throttling through super-dry filter 12 from reservoir 11 out, enter outdoor heat exchanger 14 through the 4th check valve 7, cold-producing medium becomes superheated vapor in outdoor heat exchanger 14 with after air heat-exchange, cold-producing medium enters gas-liquid separator 15 through cross valve 2 from outdoor heat exchanger 14 out, and then be inhaled into compressor 1, complete and heat circulation.In air loop, be stored in the cooled dose of heating of air in air heat exchanger 16.
In the time that outdoor heat exchanger 14 surfaces occur that frosting initial procedure is condensed drop, the first MOD 17, the 3rd MOD 20 and blower fan 18 are opened, be stored in hot-air in air heat exchanger 16 blows to outdoor heat exchanger 14 fast from wind pushing nozzle 21 fin surface by the 3rd MOD 20, the drop condensing for evaporating fin surface frosting initial procedure.Due to only 0.01 millimeter of rank of surperficial drop size, hot-air can evaporate drop easily, thereby has blocked the growth of frost layer.After defrosting finishes, close the first MOD 17, the 3rd MOD 20 and blower fan 18 and open.In this process, cold-producing medium heats the normal operation of circulation.
The above is only preferred embodiment of the present utility model; be noted that for those skilled in the art; do not departing under the prerequisite of the utility model principle; can also make some improvement and be equal to replacement; these improve the utility model claim and are equal to the technical scheme after replacement, all fall into protection domain of the present utility model.
Claims (5)
1. an air source heat pump defrosting device that adopts hot-air evaporation initial liquid drop, is characterized in that, this device comprises refrigerant loop and air loop;
Described refrigerant loop comprises compressor (1), cross valve (2), indoor heat exchanger (3), the first check valve (4), the second check valve (5), the 3rd check valve (6), the 4th check valve (7), the first magnetic valve (8), the second magnetic valve (9), the 3rd magnetic valve (10), reservoir (11), device for drying and filtering (12), electric expansion valve (13), outdoor heat exchanger (14), gas-liquid separator (15), air heat exchanger (16) and relevant connection pipeline, described outdoor heat exchanger (14) and air heat exchanger (16) are also the parts of air loop simultaneously, on described cross valve (2), be provided with cross valve first input end (2a), cross valve the first output (2b), cross valve the second input (2c) and cross valve the second output (2d), on described indoor heat exchanger (3), be provided with indoor heat exchanger input (3a) and indoor heat exchanger output (3b), on described outdoor heat exchanger (14), be provided with outdoor heat exchanger input (14a) and outdoor heat exchanger output (14b), on described air heat exchanger (16), be provided with air heat exchanger input (16a) and air heat exchanger output (16b),
In described refrigerant loop, the output of compressor (1) is connected with cross valve first input end (2a), cross valve the first output (2b) is connected with indoor heat exchanger input (3a), indoor heat exchanger output (3b) is divided into two-way, one tunnel is connected with the entrance of the first check valve (4), the outlet of another Lu Yu tri-check valves (6) connects, the outlet of the first check valve (4) is divided into three tunnels, one tunnel is connected with the outlet of the second check valve (5), the first magnetic valve (8) of leading up to is connected with the input of reservoir (11), the second magnetic valve (9) of separately leading up to is connected with air heat exchanger input (16a), air heat exchanger output (16b) is connected with the input of reservoir (11) by the 3rd magnetic valve (10), the output of reservoir (11) connects device for drying and filtering (12) successively by pipeline, electric expansion valve is divided into two-way after (13), one tunnel is connected with the import of the 4th check valve (7), the entrance of another Lu Yu tri-check valves (6) connects, the outlet of described the 4th check valve (7) is connected with outdoor heat exchanger input (14a), outdoor heat exchanger input (14a) is also connected with the import of the second check valve (5) simultaneously, outdoor heat exchanger output (14b) is connected with cross valve the second input (2c), cross valve the second output (2d) is connected with the input of gas-liquid separator (15), the output of gas-liquid separator (15) is connected with the input of compressor (1),
Described air loop comprises outdoor heat exchanger (14), air heat exchanger (16), the first MOD (17), blower fan (18), the second MOD (19), the 3rd MOD (20), wind pushing nozzle (21) and relevant connection pipeline, in described air loop, air flow in air heat exchanger (16) is consistent with the air flow in outdoor heat exchanger (14), the air inlet place of air heat exchanger (16) is provided with the first MOD (17), the air outlet of air heat exchanger (16) is by airduct connecting fan (18) successively, the 3rd MOD (20) and wind pushing nozzle (21), on the airduct sidewall between blower fan (18) and the 3rd MOD (20), be provided with the second MOD (19) and be communicated with external environment simultaneously, the air outlet of wind pushing nozzle (21) is just to outdoor heat exchanger (14) air inlet setting.
2. the air source heat pump defrosting device of employing hot-air evaporation initial liquid drop according to claim 1, it is characterized in that, when the operation of heat pump winter heating defrosts, described the second magnetic valve (9), the 3rd magnetic valve (10), the first MOD (17), blower fan (18) and the 3rd MOD (20) are opened, and the first magnetic valve (8), the second MOD (19) are closed.
3. the air source heat pump defrosting device of employing hot-air evaporation initial liquid drop according to claim 1, it is characterized in that, when heat pump refrigerating operaton in summer, described the first magnetic valve (8) and the 3rd MOD (20) are closed, the second magnetic valve (9), the 3rd magnetic valve (10), the first MOD (17), blower fan (18) and the second MOD (19) are opened, now, air heat exchanger (16) served as cold heat exchanger, cold-producing medium was realized cold with air heat-exchange in air heat exchanger (16), thereby improve heat pump specific refrigerating effect and refrigerating efficiency.
4. the air source heat pump defrosting device of employing hot-air evaporation initial liquid drop according to claim 1, is characterized in that, the hot blast direct effect that described wind pushing nozzle (21) is discharged is to the fin surface of outdoor heat exchanger (14).
5. the air source heat pump defrosting device of employing hot-air evaporation initial liquid drop according to claim 1, is characterized in that, origin of heat when Defrost is crossed cold institute liberated heat in cold-producing medium, does not need extra heat exhaustion.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420346944.XU CN203964488U (en) | 2014-06-27 | 2014-06-27 | Adopt the air source heat pump defrosting device of hot-air evaporation initial liquid drop |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420346944.XU CN203964488U (en) | 2014-06-27 | 2014-06-27 | Adopt the air source heat pump defrosting device of hot-air evaporation initial liquid drop |
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| CN203964488U true CN203964488U (en) | 2014-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420346944.XU Withdrawn - After Issue CN203964488U (en) | 2014-06-27 | 2014-06-27 | Adopt the air source heat pump defrosting device of hot-air evaporation initial liquid drop |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061727A (en) * | 2014-06-27 | 2014-09-24 | 东南大学 | Air source heat pump defrosting device based on fast evaporation of liquid drops in initial process of frosting |
| CN105299987A (en) * | 2015-10-13 | 2016-02-03 | 东南大学 | Air source heat pump sprinkling defrosting device based on super-hydrophobic finned tube exchanger |
-
2014
- 2014-06-27 CN CN201420346944.XU patent/CN203964488U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061727A (en) * | 2014-06-27 | 2014-09-24 | 东南大学 | Air source heat pump defrosting device based on fast evaporation of liquid drops in initial process of frosting |
| CN105299987A (en) * | 2015-10-13 | 2016-02-03 | 东南大学 | Air source heat pump sprinkling defrosting device based on super-hydrophobic finned tube exchanger |
| CN105299987B (en) * | 2015-10-13 | 2017-10-20 | 东南大学 | Air source heat pump spray defroster based on super-hydrophobic finned tube exchanger |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141126 Effective date of abandoning: 20160817 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |