CN108800687A - Dual chamber external heat exchanger heat pump with defrosting function and defrosting method - Google Patents
Dual chamber external heat exchanger heat pump with defrosting function and defrosting method Download PDFInfo
- Publication number
- CN108800687A CN108800687A CN201810485571.7A CN201810485571A CN108800687A CN 108800687 A CN108800687 A CN 108800687A CN 201810485571 A CN201810485571 A CN 201810485571A CN 108800687 A CN108800687 A CN 108800687A
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- Prior art keywords
- way valve
- evaporator
- valve
- mouths
- compressor
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Classifications
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- 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
-
- 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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/025—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units
- F25B2313/0252—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units with bypasses
- F25B2313/02522—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units with bypasses during defrosting
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
Abstract
The present invention relates to a kind of dual chamber external heat exchanger heat pump and defrosting method with defrosting function, feature be include compressor, the first four-way valve, check valve, the second four-way valve, condenser, the first evaporator with fan, solenoid valve, first throttle mechanism, second throttle body, third throttle mechanism and the second evaporator with fan；Its defrost is run in two stages.Its advantage is：It during defrost, is not required to provide heat for defrost for hot side heat exchanger, will not therefore decline for hot side temperature, ensure that Heating quality；During defrost, unit still absorbs heat from outdoor environment, ensure that the efficiency of unit operation, reduces the defrost time；During defrost, the heat exchange blower fan in evaporation operating mode remains operational, and refrigerant evaporation is complete, greatly reduces compressor and returns liquid phenomenon.
Description
Technical field
The present invention relates to a kind of dual chamber external heat exchanger heat pumps and defrosting method with defrosting function.
Background technology
Currently, the main stream approach of heat pump defrost is by a four-way reversing valve, hot gas importing air-side heat exchanger is removed
Frost, and be now in heat absorption situation for hot side, such defrost can seriously affect the effect for hot side, i.e., for hot side temperature can under
Drop, if temperature can decline on the inside of air conditioning chamber, the defrost time is longer, more apparent for being dropped at a temperature of hot side.Sometimes for hot side in order to anti-
Only temperature excessive descent can stop heat donor fluid, such as the flowing of air-conditioning room air, the hot water of water heater, to make heat absorption imitate
Fruit deteriorates, and causes thermo-compression evaporation side when defrost to return liquid phenomenon, larger hidden danger is brought to the operation of compressor.
Invention content
A kind of dual chamber with defrosting function is provided the purpose of the present invention is overcome the deficiencies in the prior art
Outdoor heat exchanger is cut into two by external heat exchanger heat pump and defrosting method, and when normal heat supply running pattern, two are changed
Hot device is in parallel operation state, and when in defrost pattern, two outdoor heat exchangers form complete refrigeration with compressor and are
System, and be excluded except refrigeration cycle for hot side heat exchanger, amount of heat is first absorbed by an outdoor heat exchanger, by second
Outdoor heat exchanger defrost, then second outdoor heat exchanger absorb amount of heat, First outdoor heat exchanger defrost.
In order to achieve the above object, the technical solution of the dual chamber external heat exchanger heat pump with defrosting function of the invention is this
What sample was realized, it is characterised in that including compressor, the first four-way valve, check valve, the second four-way valve, condenser, the with fan
One evaporator, solenoid valve, first throttle mechanism, second throttle body, third throttle mechanism and the second evaporator with fan；Its
In
The exhaust outlet of the compressor is connected to the air intake of the first four-way valve, C1 mouths and the compressor of first four-way valve
Gas returning port is connected to, and the B1 mouths of the first four-way valve are connected to the Single port of the second evaporator, the D1 mouths and check valve of the first four-way valve
Air intake connection；
The gas outlet of the check valve is connected to the air intake of the second four-way valve, C2 mouths and the compressor of second four-way valve
Gas returning port is connected to, and the B2 mouths of the second four-way valve are connected to the Single port of the first evaporator, the D2 mouths and condenser of the second four-way valve
Single port connection；
The solenoid valve and first throttle mechanism are sequentially connected in series, and the another port of the condenser and the air intake of solenoid valve connect
Logical, the gas outlet of the first throttle mechanism is connected to by second throttle body with the another port of the first evaporator, first segment
The gas outlet of stream mechanism is also connected to by third throttle mechanism with the another port of the second evaporator.
In the technical scheme, the first throttle mechanism, second throttle body and third throttle mechanism can be capillarys
Any one of three kinds of pipe, heating power expansion valve, electric expansion valve throttle mechanisms or several combinations；The solenoid valve can be with
One throttle mechanism is merged into electric expansion valve.
In the technical scheme, solenoid valve replacement can be used in the check valve.
In order to achieve the above object, a kind of dual chamber external heat exchanger heat pump defrosting method of the invention is achieved in that it
It is characterized in that progress control method is as follows：
When heat supply running, check valve is opened, and refrigerant is entered the air intake of the first four-way valve by exhaust outlet of compressor, and refrigerant is again
Check valve is flowed into from the D1 mouths of the first four-way valve, refrigerant enters the air intake of the second four-way valve, refrigerant by check valve
Condenser is flowed into from the D2 mouths of the second four-way valve again, solenoid valve and first throttle are flowed successively through again by the refrigerant of condenser
Divide two-way after mechanism, all the way successively through second throttle body, the first evaporator, the B2 mouths of the second four-way valve and the second four-way valve
The C2 mouthfuls of gas returning ports for returning to compressor, another way successively through third throttle mechanism, the second evaporator, the first four-way valve B1 mouths and
The C1 mouths of first four-way valve return to the gas returning port of compressor, complete a cycle；
Defrost is run in two stages:
First stage；Refrigerant is entered the air intake of the first four-way valve by exhaust outlet of compressor, and refrigerant is again from the first four-way valve
D1 mouths flow into check valve, by check valve refrigerant again enter the second four-way valve air intake, refrigerant is again from second
The B2 mouths of four-way valve flow into the first evaporator, pass through second throttle body, the successively again by the refrigerant of the first evaporator
Three throttle mechanisms, the second evaporator, the B1 mouths of the first four-way valve and the first four-way valve C1 mouths return to the gas returning port of compressor, it is complete
A full cycle；At this point, the first evaporator defrost, the fan of the first evaporator stops, and the second evaporator absorbs amount of heat, the
The fan of two evaporators is run；
Second stage；Check valve is closed, and refrigerant is entered the air intake of the first four-way valve, system by exhaust outlet of compressor
Cryogen flows into the second evaporator from the B1 mouths of the first four-way valve again, passes through third successively again by the refrigerant of the second evaporator
Throttle mechanism, second throttle body, the first evaporator, the B2 mouths of the second four-way valve and the second four-way valve C2 mouths return to compressor
Gas returning port, it is complete one cycle；At this point, the second evaporator defrost, the fan of the second evaporator stops, and the first evaporator absorbs
Amount of heat, the fan operation of the first evaporator.
The present invention compared with prior art the advantages of be：During defrost, it is not required to provide heat for defrost for hot side heat exchanger,
It will not therefore decline for hot side temperature, ensure that Heating quality；During defrost, unit still absorbs heat from outdoor environment, protects
The efficiency for having demonstrate,proved unit operation reduces the defrost time；During defrost, the heat exchange blower fan in evaporation operating mode remains operational, and makes
Cryogen evaporation is complete, greatly reduces compressor and returns liquid phenomenon.
Description of the drawings
Fig. 1 is the refrigerant flow circuit block diagram of the present invention.
Specific implementation mode
The specific implementation mode of the present invention is described further below in conjunction with the accompanying drawings.It should be noted that for
The explanation of these embodiments is used to help understand the present invention, but does not constitute limitation of the invention.In addition, disclosed below
The each embodiment of the present invention in involved technical characteristic can be combined with each other as long as they do not conflict with each other.
In the description of the present invention, term " first ", " second " and " third " is used for description purposes only, and cannot be understood
To indicate or implying relative importance.
As shown in Figure 1, it is a kind of dual chamber external heat exchanger heat pump with defrosting function, including compressor 1, the first four-way
Valve 2, check valve 3, the second four-way valve 4, condenser 5, the first evaporator 6 with fan, solenoid valve 7, first throttle mechanism 8,
Two throttle mechanisms 9, third throttle mechanism 10 and the second evaporator 11 with fan；Wherein
The exhaust outlet of the compressor 1 is connected to the air intake of the first four-way valve 2, C1 mouths and the compression of first four-way valve 2
The gas returning port of machine 1 is connected to, and the B1 mouths of the first four-way valve 2 are connected to the Single port of the second evaporator 11, the D1 mouths of the first four-way valve 2
It is connected to the air intake of check valve 3；
The gas outlet of the check valve 3 is connected to the air intake of the second four-way valve 4, C2 mouths and the compression of second four-way valve 4
The gas returning port of machine 1 is connected to, and the B2 mouths of the second four-way valve 4 are connected to the Single port of the first evaporator 6, the D2 mouths of the second four-way valve 4
It is connected to the Single port of condenser 5；
The solenoid valve 7 and first throttle mechanism 8 are sequentially connected in series, the air intake of the another port and solenoid valve 7 of the condenser 5
Connection, the gas outlet of the first throttle mechanism 8 are connected to by second throttle body 9 with the another port of the first evaporator 6, the
The gas outlet of one throttle mechanism 8 is also connected to by third throttle mechanism 10 with the another port of the second evaporator 11.
When installation, the first evaporator 6 and the second evaporator 11 can be at arranged apart two, can also merge and be arranged in same position
It sets, can be mounted on the same holder in structure, the heat exchanger tube of the first evaporator 6 and the second evaporator 11 can be through same
Heat exchange fin is opened, can be also through on different fins.
To obtain optimum efficiency in, the fan of the first evaporator 6 and the air duct of the fan of the second evaporator 11 should be
Two ducting systems independent and spaced apart from each other.But any of the fan and the fan of the second evaporator 11 when the first evaporator 6
Wind turbine stops, and when another fan operation, the corresponding heat exchanger surface wind speed of institute's blowing-out machine is smaller, its air flowing effect can be ignored
When fruit, it can not have to separate into two independent ventiduct systems yet.
The pipeline of first four-way valve 2 and the second four-way valve 4 is installed, and when energization, the air intake of the first four-way valve 2 leads to D1 mouthful
Road, B1 mouthfuls and C1 mouthfuls of accesses；The air intake of second four-way valve 4 and D2 mouthfuls of accesses, B2 mouthfuls and C2 mouthfuls of accesses.Can also be to be powered
When, the air intake of the first four-way valve 2 and B1 mouthful accesses, D1 mouthfuls and C1 mouthfuls of accesses；The air intake of second four-way valve 4 is logical with B2 mouthfuls
Road, D2 mouthfuls and C2 mouthfuls of accesses.
In the present embodiment, the first throttle mechanism 8, second throttle body 9 and third throttle mechanism 10 can be hairs
Any one of three kinds of tubule, heating power expansion valve, electric expansion valve throttle mechanisms or several combinations, such as first throttle mechanism 8
It is heating power expansion valve, and second throttle body 9 and third throttle mechanism 10 are capillaries；The solenoid valve 7 can be with first throttle
Mechanism 8 is merged into electric expansion valve, because electric expansion valve has both break-make and throttling function.
In the present embodiment, solenoid valve replacement can be used in the check valve 3, and check valve 3 prevents refrigerant from flowing backwards.
In the present embodiment, dual chamber external heat exchanger heat pump defrosting method is as follows：
When heat supply running, check valve 3 is opened, and refrigerant is entered the air intake of the first four-way valve 2, refrigerant by exhaust outlet of compressor
Check valve 3 is flowed into from the D1 mouths of the first four-way valve 2 again, refrigerant enters the air intake of the second four-way valve 4 by check valve 3,
Refrigerant flows into condenser 5 from the D2 mouths of the second four-way valve 4 again, and solenoid valve 7 is flowed successively through again by the refrigerant of condenser 5
And divide two-way after first throttle mechanism 8, B2 mouths through second throttle body 9, the first evaporator 6, the second four-way valve 4 successively all the way
And second the C2 mouths of four-way valve 4 return to the gas returning port of compressor 1, another way is successively through third throttle mechanism 10, the second evaporator
11, the B1 mouths of the first four-way valve 2 and the C1 mouths of the first four-way valve 2 return to the gas returning port of compressor 1, complete a cycle；
Defrost is run in two stages:
First stage；Refrigerant is entered the air intake of the first four-way valve 2 by exhaust outlet of compressor, and refrigerant is again from the first four-way valve
2 D1 mouths flow into check valve 3, by check valve 3 refrigerant again enter the second four-way valve 4 air intake, refrigerant again from
The B2 mouths of second four-way valve 4 flow into the first evaporator 6, pass through the second throttling successively again by the refrigerant of the first evaporator 6
Mechanism 9, third throttle mechanism 10, the second evaporator 11, the B1 mouths of the first four-way valve 2 and the first four-way valve 2 C1 mouths return to pressure
The gas returning port of contracting machine 1, a complete cycle；At this point, 6 defrost of the first evaporator, the fan of the first evaporator 6 stops, and second steams
It sends out device 11 and absorbs amount of heat, the fan operation of the second evaporator 11；
Second stage；Check valve 3 is closed, and refrigerant is entered the air intake of the first four-way valve 2 by exhaust outlet of compressor,
Refrigerant flows into the second evaporator 11 from the B1 mouths of the first four-way valve 2 again, by the refrigerant of the second evaporator 11 and successively
By third throttle mechanism 10, second throttle body 9, the first evaporator 6, the B2 mouths of the second four-way valve 2 and the second four-way valve 2
The C2 mouthfuls of gas returning ports for returning to compressor 1, a complete cycle；At this point, 11 defrost of the second evaporator, the fan of the second evaporator 11
Stop, the first evaporator 6 absorbs amount of heat, the fan operation of the first evaporator 6.
Embodiments of the present invention are explained in detail above in association with attached drawing, but the present invention is not limited to described reality
Apply mode.For the ordinary skill in the art, without departing from the principle and spirit of the present invention to these
Embodiment carries out a variety of variations, modification, replacement and deformation and still falls within the scope of the present invention.
Claims (4)
1. a kind of dual chamber external heat exchanger heat pump with defrosting function, it is characterised in that including compressor（1）, the first four-way valve
（2）, check valve（3）, the second four-way valve（4）, condenser（5）, the first evaporator with fan（6）, solenoid valve（7）, first segment
Flow mechanism（8）, second throttle body（9）, third throttle mechanism（10）And the second evaporator with fan（11）；Wherein
The compressor（1）Exhaust outlet and the first four-way valve（2）Air intake connection, first four-way valve（2）C1 mouths
With compressor（1）Gas returning port connection, the first four-way valve（2）B1 mouths and the second evaporator（11）Single port connection, first
Four-way valve（2）D1 mouths and check valve（3）Air intake connection；
The check valve（3）Gas outlet and the second four-way valve（4）Air intake connection, second four-way valve（4）C2 mouths
With compressor（1）Gas returning port connection, the second four-way valve（4）B2 mouths and the first evaporator（6）Single port connection, the two or four
Port valve（4）D2 mouths and condenser（5）Single port connection；
The solenoid valve（7）And first throttle mechanism（8）It is sequentially connected in series, the condenser（5）Another port and solenoid valve（7）
Air intake connection, the first throttle mechanism（8）Gas outlet pass through second throttle body（9）With the first evaporator（6）'s
Another port is connected to, first throttle mechanism（8）Gas outlet also pass through third throttle mechanism（10）With the second evaporator（11）'s
Another port is connected to.
2. the dual chamber external heat exchanger heat pump with defrosting function according to claim 1, it is characterised in that the first throttle
Mechanism（8）, second throttle body（9）And third throttle mechanism（10）Can be capillary, heating power expansion valve, electric expansion valve three
Any one of kind throttle mechanism or several combinations；The solenoid valve（7）It can be with first throttle mechanism（8）It is merged into electronics
Expansion valve.
3. the dual chamber external heat exchanger heat pump with defrosting function according to claim 1, it is characterised in that the check valve（3）
Solenoid valve replacement can be used.
4. a kind of dual chamber external heat exchanger heat pump defrosting method, it is characterised in that progress control method is as follows：
When heat supply running, check valve（3）It opens, refrigerant enters the first four-way valve by exhaust outlet of compressor（2）Air intake, system
Cryogen is again from the first four-way valve（2）D1 mouths flow into check valve（3）, refrigerant passes through check valve（3）Into the second four-way valve
（4）Air intake, refrigerant is again from the second four-way valve（4）D2 mouths flow into condenser（5）, by condenser（5）Refrigeration
Agent flows successively through solenoid valve again（7）And first throttle mechanism（8）After divide two-way, all the way successively through second throttle body（9）, first
Evaporator（6）, the second four-way valve（4）B2 mouths and the second four-way valve（4）C2 mouths return to compressor（1）Gas returning port, it is another
Road is successively through third throttle mechanism（10）, the second evaporator（11）, the first four-way valve（2）B1 mouths and the first four-way valve（2）'s
C1 mouthfuls return to compressor（1）Gas returning port, complete one cycle；
Defrost is run in two stages:
First stage；Refrigerant enters the first four-way valve by exhaust outlet of compressor（2）Air intake, refrigerant is again from the first four-way
Valve（2）D1 mouths flow into check valve（3）, by check valve（3）Refrigerant again enter the second four-way valve（4）Air intake,
Refrigerant is again from the second four-way valve（4）B2 mouths flow into the first evaporator（6）, by the first evaporator（6）Refrigerant again
Pass through second throttle body successively（9）, third throttle mechanism（10）, the second evaporator（11）, the first four-way valve（2）B1 mouths and
First four-way valve（2）C1 mouths return to compressor（1）Gas returning port, it is complete one cycle；At this point, the first evaporator（6）Defrost,
First evaporator（6）Fan stop, the second evaporator（11）Absorb amount of heat, the second evaporator（11）Fan operation；
Second stage；Check valve（3）It is closed, refrigerant enters the first four-way valve by exhaust outlet of compressor（2）Enter
Gas port, refrigerant is again from the first four-way valve（2）B1 mouths flow into the second evaporator（11）, by the second evaporator（11）System
Cryogen passes through third throttle mechanism successively again（10）, second throttle body（9）, the first evaporator（6）, the second four-way valve（2）'s
B2 mouthfuls and the second four-way valve（2）C2 mouths return to compressor（1）Gas returning port, it is complete one cycle；At this point, the second evaporator
（11）Defrost, the second evaporator（11）Fan stop, the first evaporator（6）Absorb amount of heat, the first evaporator（6）Wind
Fan operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810485571.7A CN108800687A (en) | 2018-05-21 | 2018-05-21 | Dual chamber external heat exchanger heat pump with defrosting function and defrosting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810485571.7A CN108800687A (en) | 2018-05-21 | 2018-05-21 | Dual chamber external heat exchanger heat pump with defrosting function and defrosting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108800687A true CN108800687A (en) | 2018-11-13 |
Family
ID=64091241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810485571.7A Pending CN108800687A (en) | 2018-05-21 | 2018-05-21 | Dual chamber external heat exchanger heat pump with defrosting function and defrosting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108800687A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111023372A (en) * | 2019-12-31 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Heat pump system of air conditioner, air conditioner and defrosting control method of air conditioner |
| CN111322784A (en) * | 2020-03-23 | 2020-06-23 | 珠海格力电器股份有限公司 | Air conditioning unit capable of continuously heating and control method thereof |
| CN115235154A (en) * | 2022-03-31 | 2022-10-25 | 浙江中广电器集团股份有限公司 | Air source heat pump and defrosting device thereof |
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|---|---|---|---|---|
| EP0128108B1 (en) * | 1983-06-01 | 1987-07-15 | Carrier Corporation | Apparatus and method for defrosting a heat exchanger in a refrigeration circuit |
| JP2000146344A (en) * | 1998-09-08 | 2000-05-26 | Hitachi Ltd | Air conditioner |
| KR100333814B1 (en) * | 1999-05-29 | 2002-04-26 | 윤종용 | Dual unit type air conditioner for heating and cooling and defrosting method thereof |
| CN201875996U (en) * | 2010-05-26 | 2011-06-22 | 广东芬尼克兹节能设备有限公司 | Multidimensional heat pump set |
| CN101788206B (en) * | 2009-07-03 | 2012-11-07 | 曾华文 | Outdoor double heat exchanger defrosting low-temperature heating system |
| CN204202231U (en) * | 2014-09-12 | 2015-03-11 | 江苏辛普森新能源有限公司 | A kind of double evaporators air source heat pump |
| CN105091437A (en) * | 2015-08-28 | 2015-11-25 | 合肥美菱股份有限公司 | Automatic defrosting system for air cooling refrigerator and control method of automatic defrosting system |
| WO2017094148A1 (en) * | 2015-12-02 | 2017-06-08 | 三菱電機株式会社 | Air conditioning device |
| CN106907877A (en) * | 2017-03-10 | 2017-06-30 | 南京理工大学 | A kind of double evaporators replace defrosting net for air-source heat pump units and its Defrost method |
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0128108B1 (en) * | 1983-06-01 | 1987-07-15 | Carrier Corporation | Apparatus and method for defrosting a heat exchanger in a refrigeration circuit |
| JP2000146344A (en) * | 1998-09-08 | 2000-05-26 | Hitachi Ltd | Air conditioner |
| KR100333814B1 (en) * | 1999-05-29 | 2002-04-26 | 윤종용 | Dual unit type air conditioner for heating and cooling and defrosting method thereof |
| CN101788206B (en) * | 2009-07-03 | 2012-11-07 | 曾华文 | Outdoor double heat exchanger defrosting low-temperature heating system |
| CN201875996U (en) * | 2010-05-26 | 2011-06-22 | 广东芬尼克兹节能设备有限公司 | Multidimensional heat pump set |
| CN204202231U (en) * | 2014-09-12 | 2015-03-11 | 江苏辛普森新能源有限公司 | A kind of double evaporators air source heat pump |
| CN105091437A (en) * | 2015-08-28 | 2015-11-25 | 合肥美菱股份有限公司 | Automatic defrosting system for air cooling refrigerator and control method of automatic defrosting system |
| WO2017094148A1 (en) * | 2015-12-02 | 2017-06-08 | 三菱電機株式会社 | Air conditioning device |
| CN106907877A (en) * | 2017-03-10 | 2017-06-30 | 南京理工大学 | A kind of double evaporators replace defrosting net for air-source heat pump units and its Defrost method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111023372A (en) * | 2019-12-31 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Heat pump system of air conditioner, air conditioner and defrosting control method of air conditioner |
| CN111322784A (en) * | 2020-03-23 | 2020-06-23 | 珠海格力电器股份有限公司 | Air conditioning unit capable of continuously heating and control method thereof |
| CN115235154A (en) * | 2022-03-31 | 2022-10-25 | 浙江中广电器集团股份有限公司 | Air source heat pump and defrosting device thereof |
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