CN106705502A - Evaporator dedusting and defrosting system of air source heat pump - Google Patents
Evaporator dedusting and defrosting system of air source heat pump Download PDFInfo
- Publication number
- CN106705502A CN106705502A CN201710074898.0A CN201710074898A CN106705502A CN 106705502 A CN106705502 A CN 106705502A CN 201710074898 A CN201710074898 A CN 201710074898A CN 106705502 A CN106705502 A CN 106705502A
- Authority
- CN
- China
- Prior art keywords
- fixed
- fall way
- evaporator
- heat pump
- source heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
Abstract
The invention discloses an evaporator dedusting and defrosting system of an air source heat pump. The system comprises a bracket, an upper shaft, a lower shaft, two hollow lifting pipes, a lifting motor, a rotary motor and an air heater and is characterized in that the upper shaft and the lower shaft are fixed on the bracket; upper chain wheels are arranged at two ends of the upper shaft; lower chain wheels are fixed at two ends of the lower shaft; the upper chain wheels and the lower chain wheels carry out transmission through chains; the lifting pipes are fixed on the chains; bristles are fixed on the outer surfaces of the lifting pipes; vent holes are uniformly formed in the outer surfaces of the lifting pipes; air outlets of the air heater communicate with inner cavities of the lifting pipes via a breather pipe; and the lifting motor drives the lower shaft to rotate to drive a chain transmission system to drive the bristles to sweep the surfaces of a coil and fins in a reciprocating manner, and a draught fan is adopted for blowing dust to ensure that an evaporator has excellent heat exchanging efficiency during working. Hot gas sprayed out of the vent holes in the lifting pipes also can be utilized to defrost and deice the surfaces of the coil and the fins, so that the heat exchanging efficiency of the evaporator in frost weather is improved, and energy consumption of the air source heat pump is further reduced.
Description
Technical field
Frost system is removed the present invention relates to a kind of air source heat pump evaporator dedusting, in particular, more particularly to it is a kind of
Frost system is removed using bristle and cold wind dedusting, using the air source heat pump evaporator dedusting of hot wind deicing frost.
Background technology
Air source heat pump is made up of devices such as compressor, evaporator, condenser, fluid reservoir, expansion valves, and medium is in compressor
In the presence of in system internal circulation flow, its operation principle is：Heat energy of the liquid medium in absorption air in evaporator, and turn
Turn to gaseous state；Then, medium completes gaseous boosting intensification through compressor, and enters condenser by the heat of high temperature transmission of itself
To recirculated water, while oneself being converted into liquid, then expanded valve is again introduced into evaporator, successively reciprocation cycle, with reality
The utilization of heat energy in existing air.
Thermal energy storage in air is abundant, widely distributed, easy acquisition, and less electric energy is consumed using compressor, you can
By the thermal energy storage in air in the hot water.The operating efficiency of air source heat pump is influenceed larger by outside environmental elements, due to
The pipeline of evaporator is exposed in external environment, and long-term use coil pipe is easily covered with dust all over the surface of fin so that evaporation tube
In medium and outside air heat exchange efficiency reduction, increased the energy consumption of air source heat pump.And, in cold winter, disk
The easy frosting in surface or icing of pipe and fin, because frost is to the iris action of air so that the work effect of air source heat pump
Rate is substantially reduced, and existing defrosting principle is to be defrosted using the energy of hot water in water tank, under defrosting efficiency is relatively low.
The content of the invention
Shortcoming in order to overcome above-mentioned technical problem of the invention, there is provided a kind of air source heat pump evaporator dedusting removes frost
System.
Air source heat pump evaporator dedusting of the invention removes frost system, including support, upper axle, lower axle, two hollow liters
Drop pipe, lifting motor and warm-air drier, coil pipe and the fin of evaporator are fixed on support by fixed plate；It is characterized in that：Branch
The upper end of frame is fixed with axle, and the lower end of support is provided with the lower axle that can be rotated, and lower axle is parallel with upper axle, and the two of upper axle
End is provided with upper sprocket wheel by bearing, and the two ends of lower axle are fixed with lower sprocket, and upper sprocket wheel and the lower sprocket of homonymy are passed by chain
It is dynamic；Lifting motor is arranged at one end of lower axle, and the output shaft of lifting motor is connected with lower axle, to order about lower axle rotation；Two liftings
Pipe is individually fixed in the top and bottom of chain both sides；
Bearing is fixed with chain, the two ends of fall way are fixed on bearing by upper bearing (metal), on the bearing of fall way one end
Rotary electric machine is fixed with, the output shaft of rotary electric machine is connected with fall way, to order about fall way rotation；The outer surface of fall way
On be uniformly fixed with the bristle of dedusting carried out to the surface of coil pipe and fin；Warm-air drier is fixed on support, the air-out of warm-air drier
Mouth is communicated through breather pipe with the inner chamber of fall way, and uniformly venthole is offered on fall way, to realize coil pipe and fin outer surface
Defrosting and blow away dust during bristle dedusting.
Air source heat pump evaporator dedusting of the invention removes frost system, and breather pipe is in the side of irrotationality rotating motor and lifting
Pipe is connected, and breather pipe is provided with joint with the junction of fall way, and the periphery of fall way is provided with the slip ring mutually fixed with joint,
The end of fall way is provided with carries out spacing spacing ring to slip ring.
Air source heat pump evaporator dedusting of the invention removes frost system, and the support is by base, top board, left riser and the right side
Riser is constituted, and top board is located at the top of base, and left riser, right riser be fixed between base and top board, left riser and right riser
It is parallel；The two ends of upper axle are individually fixed on left riser and right riser, and lower axle is fixed on base by two lower bearings.
Air source heat pump evaporator dedusting of the invention removes frost system, is provided between the chain and coil pipe and fin
Dividing plate, is provided with the vertical slot being engaged with fall way on dividing plate, to ensure being freely lifted for fall way.
Air source heat pump evaporator dedusting of the invention removes frost system, and air source heat pump is by evaporator, compressor, condensation
Device, fluid reservoir, filter and expansion valve composition, compressor are arranged at connecting tube between evaporator outlet and condenser line inlet
On line, fluid reservoir, filter and expansion valve are set in turn on the pipeline between condensate line outlet and evaporator inlet.
The beneficial effects of the invention are as follows：Air source heat pump evaporator dedusting of the invention removes frost system, by support
It is respectively arranged with axle, lower axle and lifting motor, and upper axle and lower axle in upper setting by the upper sprocket wheel and lower chain of chain drive
Wheel, under the drive of lifting motor, can order about two fall ways, one rising, the decline on chain, by fall way
Bristle can realize the cleaning to coil pipe and fin surface dust, and while hairbrush is cleaned, fan airflow blows away also by venthole
The dust that brush falls, ensures that evaporator has good heat exchange efficiency all the time.When running in the winter time, the air outlet of warm-air drier
Communicated with the inner chamber of fall way through breather pipe, during fall way moves up and down, sprayed using venthole on fall way
Hot gas, is capable of achieving the defrosting deicing of coil pipe and fin surface, improves heat exchange efficiency of the evaporator in cold snap, reduces air-source
Heat pump energy consumption.
Brief description of the drawings
Fig. 1 is the structural representation of air source heat pump；
Fig. 2 is air source heat pump evaporator dedusting of the invention except the structural representation of frost system；
Fig. 3 is the sectional view of Section A-A in Fig. 2；
Fig. 4 is the attachment structure figure of breather pipe and fall way.
In figure：1 evaporator, 2 compressors, 3 condensers, 4 fluid reservoirs, 5 filters, 6 expansion valves, 7 storage tanks, 8 bases, 9
Top board, 10 left risers, 11 right risers, 12 coil pipes and fin, 13 fixed plates, axle on 14,15 lower axles, 16 fall ways, 17 lifting electricity
Machine, 18 warm-air driers, 19 rotary electric machines, 20 bearings, 21 upper bearing (metal)s, 22 chains, 23 dividing plates, 24 shaft couplings, 25 lower sprockets, 26 lower axles
Hold, 27 upper sprocket wheels, 28 bristles, 29 ventholes, 30 breather pipes, 31 joints, 32 slip rings, 33 spacing rings, 34 screws.
Specific embodiment
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, giving the structural representation of air source heat pump, it is by evaporator 1, compressor 2, condenser 3, storage
Flow container 4, filter 5 and expansion valve 6 are constituted, and compressor 2 is arranged at connecting tube between evaporator outlet and condenser line inlet
On line, fluid reservoir 4, filter 5 and expansion valve 6 are set in turn on the pipeline between condensate line outlet and evaporator inlet.
After medium absorbs the heat in the external world in evaporator 1, boosting intensification is carried out by compressor 2, by condenser 3 by heat transfer
To the recirculated water in storage tank 7, the transmission of heat in heat to recirculated water in air is realized.Process of the air source heat pump in work
In, evaporator 1 is exposed to the external environment, and by long-term use, coil pipe and the surface of fin 12 of evaporator 1 can be covered with dust all over,
Have a strong impact on the heat transfer of air and medium in coil pipe and fin 12 so that the operating efficiency reduction of air source heat pump.And,
The easy frosting in surface or icing of cold winter, coil pipe and fin 12, frost are big to the iris action of air, can make air and matchmaker
Heat conduction efficiency between Jie is substantially reduced.If not carrying out timely dedusting or defrosting to coil pipe and fin 12, can be tight
The operating efficiency of air source heat pump is reduced again, can consume increase.
As shown in Fig. 2 giving air source heat pump evaporator dedusting of the invention except the structural representation of frost system, figure
3 sectional views for giving Section A-A in Fig. 2, shown dedusting is except frost system is by support, upper axle 14, lower axle 15, two fall ways
16th, lifting motor 17, warm-air drier 18, rotary electric machine 19, two upper sprocket wheels 27, two lower sprockets 25, chain 20 are constituted, shown support
Fixed and supporting role is played, support is made up of base 8, top board 9, left riser 10 and right riser 11, top board 9 is located at the upper of base 8
Side, left riser 10 and right riser 11 are fixed on the both sides of top board 9 and base 8.Upper axle 14 is horizontally disposed with, the middle part of upper axle 14
It is fixed on top board 9 by connector, two upper sprocket wheels 27 are arranged on the both sides of upper axle 14 by bearing.Lower axle 15 is located at support
Bottom, the both sides of lower axle 15 are fixed on base 8 by lower bearing 26.
Two lower sprockets 25 are fixed on the both sides of lower axle 15, and lower sprocket 25 and the upper sprocket wheel 27 of homonymy are located at same vertical direction
On, lower sprocket 25 is connected with upper sprocket wheel 27 by chain 22.Lifting motor 17 is fixed on the base 8 of the left end of lower axle 15,
The output shaft of lifting motor 17 is mutually fixed by shaft coupling 24 with the left end of lower axle 15, and ordering about lower axle 15 in lifting motor 17 rotates
During, you can drive lower sprocket 25, chain 22, upper sprocket wheel 27 to move.
Two shown fall ways 16, a top for being arranged at the side of chain 22, another is arranged at the opposite side of chain 22
Bottom, fall way 16 be horizontally disposed with, the both sides of fall way 16 are provided with upper bearing (metal) 21, to realize freely turning for fall way 16
It is dynamic；Upper bearing (metal) 21 is fixed on chain 22 by bearing 20, to realize fall way 16 with the oscilaltion of chain 22.Rotary electric machine 19
It is arranged on the bearing 20 of the left end of fall way 16, output shaft and the fall way 16 of rotary electric machine 19 are mutually fixed, to rotate electricity
Under the driving effect of machine 19, fall way 16 is driven to be rotated.
Bristle 28 uniformly is fixed with the outer surface of fall way 16, simultaneously itself is turned with the oscilaltion of chain 22 in fall way 16
In dynamic process, bristle 28 can remove the dust of coil pipe and the surface of fin 12, and also coil pipe can be entered with the frost on the surface of fin 12
Row strikes off.Also uniformly offer venthole 29 on the outer surface of fall way 16, the cavity phase inside venthole 29 and fall way 16
Logical, the right-hand member of fall way 16 is communicated through breather pipe 30 with the gas outlet of warm-air drier 18, and warm-air drier 18 is fixed in right riser 11
Portion position.After the hot blast of the blowout of warm-air drier 18 is through breather pipe 30, the internal cavities of fall way 16, discharged through venthole 29, with
The oscilaltion of fall way 16 and own rotation, can reach the effect of removal frost by coil pipe and the blowing of frost on the surface of fin 12
Fruit is also used for blowing away dust in bristle dust removal process..
As shown in figure 4, give the attachment structure figure of Center Vent tube of the present invention and fall way, shown breather pipe 30 and lifting
The junction of pipe 16 is provided with joint 31, and the periphery of the end of fall way 16 is provided with slip ring 32, and the internal diameter of slip ring 32 is more than lifting
The external diameter of pipe 16, so that slip ring 32 is not rotated with it during the rotation of fall way 16.Joint 31 passes through screw 34 and slip ring
32 mutually fix, and the outer end of fall way 16 is provided with and spacing spacing ring 33 is carried out to slip ring 32, in case on-slip ring 32 is from fall way
16 end abjection.
Air source heat pump evaporator dedusting of the invention is as follows except the course of work of frost system：Air source heat pump is through long
The work of phase, in the case where the outer surface of coil pipe and fin 12 is covered with dust all over, then opens lifting motor 17 and rotates electricity simultaneously
Machine 19, the cool wind mode of intermittently starting warm-air drier 18.Under the induced effect of lifting motor 17, the fall way 16 in the top
Can decline, the fall way 16 in least significant end can rise, while rotary electric machine 19 orders about the rotation of fall way 16, on fall way 16
Bristle 28 can constantly clean the surface of coil pipe and fin 12, coil pipe can be cleaned and blown away with the dust on the surface of fin 12.When most
When the fall way 16 of upper end drops to least significant end, due to the position-limiting action of bearing 20（Also can be by setting limit switch come real
It is existing）, lifting motor 17 is inverted, to realize that the continuation to coil pipe and fin 12 is cleaned.Winter, when coil pipe is outer with fin 12
When surface has frost, open warm-air drier 18 warm wind pattern, according to clean dust communicate the step of, you can by coil pipe and wing
The frost removal of the outer surface of piece 12.
Claims (5)
1. a kind of air source heat pump evaporator dedusting removes frost system, including support, upper axle（14）, lower axle（15）, it is two hollow
Fall way（16）, lifting motor（17）And warm-air drier（18）, the coil pipe and fin of evaporator（12）By fixed plate（13）It is fixed
In on support；It is characterized in that：The upper end of support is fixed with axle（14）, the lower end of support is provided with the lower axle that can be rotated
（15）, lower axle is parallel with upper axle, and the two ends of upper axle are provided with upper sprocket wheel by bearing（27）, the two ends of lower axle are fixed with lower chain
Wheel（25）, upper sprocket wheel and the lower sprocket of homonymy pass through chain（22）Transmission；Lifting motor is arranged at one end of lower axle, lifting motor
Output shaft be connected with lower axle, with order about lower axle rotation；Two fall ways are individually fixed in the top and bottom of chain both sides；
Bearing is fixed with chain（20）, the two ends of fall way pass through upper bearing (metal)（21）It is fixed on bearing, fall way one end
Bearing on be fixed with rotary electric machine（19）, the output shaft of rotary electric machine is connected with fall way, to order about fall way rotation；Rise
Drop uniformly to be fixed with the outer surface of pipe and the bristle of dedusting is carried out to the surface of coil pipe and fin（28）；Warm-air drier is fixed on support
On, the air outlet of warm-air drier is through breather pipe（30）Communicated with the inner chamber of fall way, uniformly venthole is offered on fall way（29）,
Dust is blown away during with defrosting and the bristle dedusting of realizing coil pipe and fin outer surface.
2. air source heat pump evaporator dedusting according to claim 1 removes frost system, it is characterised in that：Breather pipe（30）
In irrotationality rotating motor（19）Side and fall way（16）Connection, breather pipe is provided with joint with the junction of fall way（31）,
The periphery of fall way is provided with the slip ring mutually fixed with joint（32）, the end of fall way is provided with and carries out spacing limit to slip ring
Position ring（33）.
3. air source heat pump evaporator dedusting according to claim 1 and 2 removes frost system, it is characterised in that：The branch
Frame is by base（8）, top board（9）, left riser（10）With right riser（11）Composition, top board is located at the top of base, and left riser, the right side are vertical
Plate is fixed between base and top board, and left riser is parallel with right riser；Upper axle（14）Two ends be individually fixed in left riser and
On right riser, lower axle（15）By two lower bearings（26）It is fixed on base（8）On.
4. air source heat pump evaporator dedusting according to claim 1 and 2 removes frost system, it is characterised in that：The chain
Bar（22）With coil pipe and fin（12）Between be provided with dividing plate（23）, it is provided with dividing plate and fall way（16）What is be engaged is vertical
Groove, to ensure being freely lifted for fall way.
5. air source heat pump evaporator dedusting according to claim 1 and 2 removes frost system, it is characterised in that：Air-source
Heat pump is by evaporator（1）, compressor（2）, condenser（3）, fluid reservoir（4）, filter（5）And expansion valve（6）Composition, compressor
It is arranged between evaporator outlet and condenser line inlet in connecting pipeline, fluid reservoir, filter and expansion valve set gradually
On pipeline between condensate line outlet and evaporator inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710074898.0A CN106705502A (en) | 2017-02-13 | 2017-02-13 | Evaporator dedusting and defrosting system of air source heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710074898.0A CN106705502A (en) | 2017-02-13 | 2017-02-13 | Evaporator dedusting and defrosting system of air source heat pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106705502A true CN106705502A (en) | 2017-05-24 |
Family
ID=58909216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710074898.0A Pending CN106705502A (en) | 2017-02-13 | 2017-02-13 | Evaporator dedusting and defrosting system of air source heat pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106705502A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109059529A (en) * | 2018-08-21 | 2018-12-21 | 上饶市欧德环保有限公司 | A kind of stoving rack based on grapheme material |
| CN109114806A (en) * | 2018-08-16 | 2019-01-01 | 浙江正理生能科技有限公司 | A kind of air source water heater and its Defrost method |
| CN110307599A (en) * | 2019-06-11 | 2019-10-08 | 江苏经贸职业技术学院 | A kind of air-conditioning heat dissipation system |
| CN112361656A (en) * | 2020-11-09 | 2021-02-12 | 湖南哲能赫新能源有限责任公司 | Energy-saving air source heat pump unit |
| CN112484343A (en) * | 2020-11-25 | 2021-03-12 | 温州瘦玫机械科技有限公司 | Air source screw type heat pump unit with defrosting mechanism |
| CN112781288A (en) * | 2021-01-03 | 2021-05-11 | 李俊利 | Air conditioner defrosting device |
| CN112923602A (en) * | 2021-02-08 | 2021-06-08 | 中兵占一新能源科技集团有限公司 | Efficient and environment-friendly carbon dioxide air source heat pump device |
| CN114251877A (en) * | 2021-12-21 | 2022-03-29 | 王向阳 | Fin type evaporator |
| CN114963629A (en) * | 2022-05-27 | 2022-08-30 | 合肥荣事达太阳能有限公司 | Ultra-low temperature air energy heat pump unit defrosting system |
| CN115046330A (en) * | 2022-06-27 | 2022-09-13 | 深圳市永凯机电设备有限公司 | Combined type energy-saving air source heat pump |
| CN117553457A (en) * | 2023-12-22 | 2024-02-13 | 东莞市锦沐节能科技有限公司 | Self-cleaning type air source heat pump with efficient heat exchange function |
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| CN206488512U (en) * | 2017-02-13 | 2017-09-12 | 硕楠 | A kind of air source heat pump evaporator dedusting removes frost system |
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| CN103256776A (en) * | 2013-05-29 | 2013-08-21 | 孟岩 | Automatic mechanical defrosting device of direct-cooling refrigerator evaporator |
| CN104457065A (en) * | 2014-12-20 | 2015-03-25 | 邱国栋 | Defrosting and dedusting device, heat exchanger with same and defrosting and dedusting method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109114806A (en) * | 2018-08-16 | 2019-01-01 | 浙江正理生能科技有限公司 | A kind of air source water heater and its Defrost method |
| CN109059529A (en) * | 2018-08-21 | 2018-12-21 | 上饶市欧德环保有限公司 | A kind of stoving rack based on grapheme material |
| CN110307599A (en) * | 2019-06-11 | 2019-10-08 | 江苏经贸职业技术学院 | A kind of air-conditioning heat dissipation system |
| CN112361656A (en) * | 2020-11-09 | 2021-02-12 | 湖南哲能赫新能源有限责任公司 | Energy-saving air source heat pump unit |
| CN112484343A (en) * | 2020-11-25 | 2021-03-12 | 温州瘦玫机械科技有限公司 | Air source screw type heat pump unit with defrosting mechanism |
| CN112781288A (en) * | 2021-01-03 | 2021-05-11 | 李俊利 | Air conditioner defrosting device |
| CN112923602A (en) * | 2021-02-08 | 2021-06-08 | 中兵占一新能源科技集团有限公司 | Efficient and environment-friendly carbon dioxide air source heat pump device |
| CN114251877A (en) * | 2021-12-21 | 2022-03-29 | 王向阳 | Fin type evaporator |
| CN114251877B (en) * | 2021-12-21 | 2023-08-25 | 广州市展能机电设备有限公司 | Fin type evaporator |
| CN114963629A (en) * | 2022-05-27 | 2022-08-30 | 合肥荣事达太阳能有限公司 | Ultra-low temperature air energy heat pump unit defrosting system |
| CN115046330A (en) * | 2022-06-27 | 2022-09-13 | 深圳市永凯机电设备有限公司 | Combined type energy-saving air source heat pump |
| CN117553457A (en) * | 2023-12-22 | 2024-02-13 | 东莞市锦沐节能科技有限公司 | Self-cleaning type air source heat pump with efficient heat exchange function |
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Application publication date: 20170524 |
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| RJ01 | Rejection of invention patent application after publication |