CN109442794A - A kind of air-conditioning refrigeration system, Defrost method and air conditioner - Google Patents
A kind of air-conditioning refrigeration system, Defrost method and air conditioner Download PDFInfo
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- CN109442794A CN109442794A CN201811434784.3A CN201811434784A CN109442794A CN 109442794 A CN109442794 A CN 109442794A CN 201811434784 A CN201811434784 A CN 201811434784A CN 109442794 A CN109442794 A CN 109442794A
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- heat exchanger
- outdoor heat
- flow path
- solenoid valve
- branch
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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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
-
- 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
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- 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
- F25B2347/00—Details for preventing or removing deposits or corrosion
- F25B2347/02—Details of defrosting cycles
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
It includes indoor heat exchanger and outdoor heat exchanger that the present invention, which provides a kind of air-conditioning refrigeration system, Defrost method and air conditioner, refrigeration system,；Outdoor heat exchanger includes the first outdoor heat exchanger and the second outdoor heat exchanger；Outdoor heat exchanger is connect by first flow path with indoor heat exchanger；Outdoor heat exchanger is equipped with flow path control assembly；Series operation both when flow path control assembly makes any of the first outdoor heat exchanger and the second outdoor heat exchanger need to defrost, and refrigerant first flows through the outdoor heat exchanger for needing to defrost, and passes through the outdoor heat exchanger for not needing defrosting；At low temperature low pressure liquid refrigerants, refrigerant heat absorption in flowing through the outdoor heat exchanger for not needing defrosting becomes low-temperature low-pressure refrigerant gas to refrigerant for heat release in flowing through the outdoor heat exchanger for needing to defrost；Using the above scheme, heat exchange efficiency, energy saving, reduction noise be can be improved, to improve air conditioning comfortableness.
Description
Technical field
The invention belongs to air-conditioning technical fields, and in particular to a kind of air-conditioning refrigeration system, Defrost method and air conditioner.
Background technique
Existing air conditioner, in winter when heating operation, since outdoor operating condition is severe, outdoor heat exchanger is often seriously tied
Frost, to influence the heat transfer effect of air-conditioner outdoor unit；It is this to remove by four-way valve commutation Defrost mode in existing scheme
White mode has the shortcomings that generate noise, reduces indoor heating effect, cannot achieve defrosting and heating while carrying out, influences air-conditioning
Comfort；In addition, the high-temperature gas for introducing compressor discharge carries out defrosting, although being not required to four-way valve commutation, energy is caused
Amount waste.
During the defrosting of above-mentioned air conditioner, there has been no relevant solutions；Therefore urgent
Need to seek effective scheme to solve the above problems.
Summary of the invention
The purpose of the present invention is shortcoming present in view of the above technology, a kind of air-conditioning refrigeration system, defrosting are proposed
Method and air conditioner, it is intended to solve the problems, such as that existing air conditioner defrosting high noise, heat exchange efficiency are low.
The present invention provides a kind of air-conditioning refrigeration system, including indoor heat exchanger and outdoor heat exchanger；Outdoor heat exchanger includes
First outdoor heat exchanger and the second outdoor heat exchanger；Outdoor heat exchanger is connect by first flow path with indoor heat exchanger；Outdoor is changed
Hot device is equipped with flow path control assembly；Flow path control assembly needs any of the first outdoor heat exchanger and the second outdoor heat exchanger
Series operation both when defrosting, and refrigerant first flows through the outdoor heat exchanger for needing to defrost, and passes through and does not need defrosting
Outdoor heat exchanger；Refrigerant needs in the outdoor heat exchanger that defrosts heat release at low temperature low pressure liquid refrigerants, refrigerant flowing through
Heat absorption becomes low-temperature low-pressure refrigerant gas in flowing through the outdoor heat exchanger for not needing defrosting.
Further, when the first outdoor heat exchanger and the second outdoor heat exchanger are required to defrosting, flow path control assembly makes two
Person's series operation first defrosts to the first outdoor heat exchanger；Flow path control assembly makes refrigerant first flow through the first outdoor heat exchanger to put
Heat passes through the second outdoor heat exchanger evaporation endothermic；After the completion of the defrosting of first outdoor heat exchanger, then the first outdoor heat exchanger is removed
Frost；Refrigerant first flows through the second outdoor heat exchanger heat release, passes through the first outdoor heat exchanger evaporation endothermic.
It further, further include compressor, oil eliminator, four-way valve and gas-liquid separator；The inlet end of oil eliminator
It is connected with compressor air-discharging end, the end of going out of oil eliminator is connect with the first end of four-way valve；The input end of gas-liquid separator with
The second end of four-way valve connects；The outlet end of gas-liquid separator is connected with the suction end of compressor；Outdoor heat exchanger passes through second
4th end of the connection of the third end of flow path and four-way valve, indoor heat exchanger and four-way valve connects, with formed refrigeration cycle or
Heat circulation loop.
Further, the first outdoor heat exchanger and the second outdoor heat exchanger are respectively arranged at outdoor heat exchanger branch road；Room
External heat exchanger branch one end is connect by the first connection branch with first flow path, the outdoor heat exchanger branch other end and second flow path
Connection；Outdoor heat exchanger branch road is equipped with the first solenoid valve and outdoor electrical expansion valve；Solenoid valve is set to the first outdoor heat exchange
Between device and four-way valve and solenoid valve is set between the second outdoor heat exchanger and four-way valve；The setting of outdoor electrical expansion valve
Between the first outdoor heat exchanger and the first connection branch and outdoor electrical expansion valve is set to the second outdoor heat exchanger and the
Between one connection branch；First connection branch and flow path control assembly respectively include solenoid valve.
Further, outdoor heat exchanger branch includes the first outdoor heat exchanger branch and the second outdoor heat exchanger branch；The
One heat exchanger is set to the first outdoor heat exchanger branch road；Second heat exchanger is set on the second outdoor heat exchanger branch；Flow path
Control assembly includes first flow path control assembly and second flow path control assembly；First outdoor heat exchanger branch one end with it is first-class
The third end of road connection, the other end and four-way valve connects；Second outdoor heat exchanger branch one end is connect with first flow path, another
One end and the third end of four-way valve connect；First flow path control assembly one end connects first flow path, and the other end connects the first Room
External heat exchanger branch, so that the first outdoor heat exchanger and the second outdoor heat exchanger form series loop.
Further, the first outdoor heat exchanger branch and the second outdoor heat exchanger branch pass through the first connection branch and first
Flow path connection；First outdoor heat exchanger branch road is equipped with the first solenoid valve and the first outdoor electrical expansion valve, the first solenoid valve position
Between the first outdoor heat exchanger and second flow path, the first outdoor electrical expansion valve is located at the first outdoor heat exchanger and the first connection
Between branch；Second outdoor heat exchanger branch is equipped with second solenoid valve and the second outdoor electrical expansion valve, second solenoid valve position
Between the second outdoor heat exchanger and second flow path, the second outdoor electrical expansion valve is located at the second outdoor heat exchanger and the first connection
Between branch；First connection branch road is equipped with the 5th solenoid valve, and first flow path control assembly includes third solenoid valve, second flow path
Control assembly includes the 4th solenoid valve；First connection branch road is equipped with the 5th solenoid valve.
Further, indoor heat exchanger includes multiple indoor heat exchangers；Multiple indoor heat exchangers are each by indoor heat exchange
Device branch is arranged side by side；Multiple indoor heat exchanger branches are connect with first flow path and four-way valve respectively.
Further, indoor heat exchanger branch road is equipped with indoor electronic expansion valve；Indoor electronic expansion valve is set to interior
Between heat exchanger and first flow path.
Further, when the first outdoor heat exchanger reaches defrosting preset value, first flow path is connected by flow path control assembly
Logical first outdoor heat exchanger, so that the first outdoor heat exchanger and the second outdoor heat exchanger form serial flow circuit, thus to the first Room
External heat exchanger defrosts；Or, first flow path passes through flow path control assembly when the second outdoor heat exchanger reaches defrosting preset value
It is connected to the second outdoor heat exchanger, so that the second outdoor heat exchanger and the first outdoor heat exchanger form serial flow circuit, thus to second
Outdoor heat exchanger defrosts；Or, when the first outdoor heat exchanger and the second outdoor heat exchanger reach defrosting preset value, first
Flow path passes through flow path control assembly so that the first outdoor heat exchanger and the second outdoor heat exchanger form serial flow circuit, first to the first Room
External heat exchanger defrosts, then defrosts to the second outdoor heat exchanger.
Further, when the first outdoor heat exchanger reaches defrosting preset value, the first solenoid valve is closed, the 4th solenoid valve closes
It closes and the 5th solenoid valve is closed, second solenoid valve is opened, and third solenoid valve is opened, so that the first outdoor heat exchanger and second Room
External heat exchanger is connected and is directly connected to the third end of four-way valve；When the second outdoor heat exchanger reaches defrosting preset value, second
Solenoid valve is closed, third solenoid valve is closed and the 5th solenoid valve is closed, and the first solenoid valve is opened, and the 4th solenoid valve is opened, with
The second outdoor heat exchanger and the first outdoor heat exchanger is set to connect and directly be connected to the third end of four-way valve.
Correspondingly, the present invention also provides a kind of air-conditioner defrosting methods, applied to air-conditioning refrigeration system described above；Including
Following steps:
When any one of the first outdoor heat exchanger or the second outdoor heat exchanger reach defrosting preset value, flow path control assembly makes
Series operation when any of first outdoor heat exchanger and the second outdoor heat exchanger need to defrost, and refrigerant first flows through needs
The outdoor heat exchanger of defrosting passes through the outdoor heat exchanger for not needing defrosting；Refrigerant is flowing through the outdoor heat exchange for needing to defrost
At low temperature low pressure liquid refrigerants, refrigerant heat absorption in flowing through the outdoor heat exchanger for not needing defrosting becomes low temperature for heat release in device
Low pressure refrigerant gas.
Correspondingly, the present invention also provides a kind of air conditioners, including remove defrosting system, described except defrosting system is sky described above
Modulate cooling system.
Using the above scheme, so that the present invention has the following technical effect that
The first, it is defrosted using the medium temperature refrigerant heat in indoor heat exchanger, improves heat exchange efficiency, energy saving；
The second, outdoor heat exchanger does not need four-way valve commutation during defrosting, reduces noise, improves defrosting efficiency；
Third, outdoor heat exchanger defrosting and indoor heat exchanger are heated while being carried out, and improve air conditioning comfortableness.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Below with reference to attached drawing, the invention will be further described:
Fig. 1 is a kind of air-conditioning refrigeration system structural schematic diagram of the present invention；
Fig. 2 is a kind of the first outdoor heat exchanger of air-conditioning refrigeration system defrosting flow path schematic diagram of the present invention；
Fig. 3 is a kind of the second outdoor heat exchanger of air-conditioning refrigeration system defrosting flow path schematic diagram of the present invention；
Fig. 4 is that a kind of air-conditioning refrigeration system of the present invention heats flow path schematic diagram；
Fig. 5 is a kind of air-conditioning refrigeration system refrigeration circuit schematic diagram of the present invention.
In figure: 1, compressor；2, oil eliminator；3, four-way valve；4, the first solenoid valve；5, second solenoid valve；6, third electricity
Magnet valve；7, the 4th solenoid valve；8, the 5th solenoid valve；9, the first outdoor heat exchanger；10, the second outdoor heat exchanger；11, first is outdoor
Electric expansion valve；12, the second outdoor electrical expansion valve；13, indoor electronic expansion valve；14, indoor electronic expansion valve；15, first
Indoor heat exchanger；16, the second indoor heat exchanger；17, gas-liquid separator.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figures 1 to 5, the present invention provides a kind of air-conditioning refrigeration system, including indoor heat exchanger and outdoor heat exchanger；
Outdoor heat exchanger includes the first outdoor heat exchanger 9 and the second outdoor heat exchanger 10；Outdoor heat exchanger passes through first flow path a and room
Interior heat exchanger connection, to form refrigeration circuit or heating flow path；On first outdoor heat exchanger 9 and the second outdoor heat exchanger 10 respectively
Equipped with flow path control assembly；Flow path control assembly makes any of the first outdoor heat exchanger 9 and the second outdoor heat exchanger 10 needs
Series operation (10 series operation of the first outdoor heat exchanger 9 and the second outdoor heat exchanger) both when defrosting, and refrigerant is first
The outdoor heat exchanger for needing to defrost is flowed through, the outdoor heat exchanger for not needing defrosting is passed through；Refrigerant is flowing through what needs defrosted
Heat release is absorbed heat in flowing through the outdoor heat exchanger for not needing defrosting at low temperature low pressure liquid refrigerants, refrigerant in outdoor heat exchanger
Become low-temperature low-pressure refrigerant gas；Further, it is required to defrost in the first outdoor heat exchanger 9 and the second outdoor heat exchanger 10
When, flow path control assembly makes 10 series operation of the first outdoor heat exchanger 9 and the second outdoor heat exchanger, and flow path control assembly makes to freeze
Agent first flows through 9 heat release of the first outdoor heat exchanger, passes through 10 evaporation endothermic of the second outdoor heat exchanger；First outdoor heat exchanger 9 removes
After the completion of frost, then defrost to the first outdoor heat exchanger 10, and refrigerant is in the first outdoor heat exchanger 9 and the second outdoor heat exchanger
Equal heat release in 10；Specifically, the frost layer of outdoor heat exchanger and medium temperature liquid refrigerant carry out heat exchange, frost layer absorbs heat and melts
Change, refrigerant is released thermal temperature and reduced, and enters another group of outdoor heat exchanger, after electric expansion valve throttles then to guarantee to remove
White effect, low windscreen is arranged in indoor heat exchanger blower during defrosting, improves indoor heat exchanger refrigerant exit temperature, i.e. defrosting liquid
Temperature；Using the above scheme, it can effectively defrost to existing air-conditioner outdoor unit, reduce noise, improve heating effect.
Preferably, in conjunction with above scheme, as shown in Figures 1 to 5, in the present embodiment, air-conditioning refrigeration system further includes compression
Machine 1, oil eliminator 2, four-way valve 3 and gas-liquid separator 17；The inlet end of oil eliminator 2 is connected with 1 exhaust end of compressor, oil
The end of going out of separator 2 is connect with the first end D of four-way valve 3；The input end of gas-liquid separator 17 and the second end S of four-way valve 3
Connection；The outlet end of gas-liquid separator 17 is connected with the suction end of compressor 1；Outdoor heat exchanger passes through second flow path b and four-way
The third end C connection of valve 3, indoor heat exchanger are connect with the 4th end E of four-way valve 3, are followed with forming refrigeration cycle or heating
Loop back path.
Preferably, in conjunction with above scheme, as shown in Figures 1 to 5, in the present embodiment, the first outdoor heat exchanger 9 and second Room
External heat exchanger 10 is respectively arranged at outdoor heat exchanger branch road；Outdoor heat exchanger branch one end passes through the first connection branch d and the
One flow path a connection, the outdoor heat exchanger branch other end are connect with second flow path b；Outdoor heat exchanger branch road be equipped with solenoid valve and
Outdoor electrical expansion valve；Wherein, solenoid valve 4 is set between the first outdoor heat exchanger 9 and four-way valve 3 and solenoid valve 5 is arranged
Between the second outdoor heat exchanger 10 and four-way valve 3；Outdoor electrical expansion valve 11 is set to the first outdoor heat exchanger 9 and first and connects
It connects between branch d and outdoor electrical expansion valve 12 is set between the second outdoor heat exchanger 10 and the first connection branch d；The
One connection branch d and flow path control assembly respectively include solenoid valve；First connection branch d is connect with first flow path a, is mainly
Based on refrigeration cycle or heating circulation loop is formed under air-conditioning system nominal situation, so that the first outdoor heat exchanger 9 and the
The work of two outdoor heat exchangers 10.
Preferably, in conjunction with above scheme, as shown in Figures 1 to 5, in the present embodiment, outdoor heat exchanger branch includes first
Outdoor heat exchanger branch e1 and the second outdoor heat exchanger branch e2；First Heat Exchanger 9 is set to the first outdoor heat exchanger branch e1
On；Second heat exchanger 10 is set on the second outdoor heat exchanger branch e2；Flow path control assembly includes first flow path control assembly
C1 and second flow path control assembly c2；First outdoor heat exchanger one end branch e1 is connect with first flow path a, the other end and four-way
The third end C connection of valve 3；Second outdoor heat exchanger one end branch e2 is connect with first flow path a, the other end and four-way valve 3
The C connection of third end；First flow path one end control assembly c1 connects first flow path a, and the other end connects the first outdoor heat exchanger branch
Road e1, so that the first outdoor heat exchanger 9 and the second outdoor heat exchanger 10 form series loop.
Preferably, in conjunction with above scheme, as shown in Figures 1 to 5, in the present embodiment, the first outdoor heat exchanger branch e1 and
Second outdoor heat exchanger branch e2 is connect by the first connection branch d with first flow path a；It is set on first outdoor heat exchanger branch e1
There are the first solenoid valve 4 and the first outdoor electrical expansion valve 11, the first solenoid valve 4 is located at the first outdoor heat exchanger 9 and second flow path b
Between, the first outdoor electrical expansion valve 11 is located between the first outdoor heat exchanger 9 and the first connection branch d；Second outdoor heat exchange
Device branch e2 is equipped with second solenoid valve 5 and the second outdoor electrical expansion valve 12, and second solenoid valve 5 is located at the second outdoor heat exchanger
Between 10 and second flow path b, the second outdoor electrical expansion valve is located between the second outdoor heat exchanger and the first connection branch d；The
One connection branch d is equipped with the 5th solenoid valve, and first flow path control assembly c1 includes third solenoid valve 6, second flow path control group
Part c2 includes the 4th solenoid valve 7；First connection branch d includes the 5th solenoid valve 8.
Preferably, in conjunction with above scheme, as shown in Figures 1 to 5, in the present embodiment, indoor heat exchanger includes multiple interiors
Heat exchanger；Multiple indoor heat exchangers are arranged side by side each by indoor heat exchanger branch；Multiple indoor heat exchanger branches respectively with
First flow path a is connected with four-way valve；Specifically, indoor heat exchanger includes the first indoor heat exchanger 15 and the second indoor heat exchanger
16, the first indoor heat exchanger 15 is set on the first indoor heat exchanger branch f1, and the second indoor heat exchanger 16 is set to second Room
On interior heat exchanger branch f2, and the first indoor heat exchanger branch f1 and the second indoor heat exchanger branch f2 are arranged in parallel, and point
It is not connect with the 4th end E and first flow path a of four-way valve 3；Further, indoor heat exchanger branch road is equipped with indoor electronic expansion
Valve, indoor electronic expansion valve is between indoor heat exchanger and first flow path a；Specifically, on the first indoor heat exchanger branch f1
Equipped with indoor electronic expansion valve 13, the second indoor heat exchanger branch f2 is equipped with indoor electronic expansion valve 14.
Preferably, it in conjunction with above scheme, as shown in Figures 1 to 5, in the present embodiment, is removed when the first outdoor heat exchanger 9 reaches
When white preset value, first flow path a is connected to the first outdoor heat exchanger by flow path control assembly, so that 9 He of the first outdoor heat exchanger
Second outdoor heat exchanger 10 forms serial flow circuit, to defrost to the first outdoor heat exchanger 9；Specifically, the first outdoor is changed
When hot device 9 defrosts, the high-temperature high-pressure refrigerant gas that compressor 1 is discharged enters the D valve of four-way reversing valve 3 by oil eliminator 2
Mouthful, it is flowed out from E valve port, enters the room heat exchanger, become medium temperature high pressure liquid refrigerant through heat exchange, through indoor electronic expansion valve
Into third solenoid valve 6, enter the first outdoor heat exchanger 9 after third solenoid valve 6 out, in the first outdoor heat exchanger 9, frost layer is inhaled
It receives heat to melt, medium temperature high-pressure refrigerant is released thermal temperature and reduced, and enters outside second Room through the first outdoor electrical expansion valve 11
Become low temperature low pressure liquid refrigerants after 12 reducing pressure by regulating flow of electric expansion valve, becomes into 10 evaporation endothermic of the second outdoor heat exchanger
Low-temperature low-pressure refrigerant gas enters the C valve port of four-way valve 3 through second solenoid valve 5, goes out to enter gas-liquid separator 17 from S valve port,
It is absorbed by compressor 1.
Preferably, in conjunction with above scheme, as shown in Figures 1 to 5, in the present embodiment, the second outdoor heat exchanger 10, which reaches, to be removed
When white preset value, first flow path a is connected to the second outdoor heat exchanger 10 by flow path control assembly, so that the second outdoor heat exchanger 10
Serial flow circuit is formed with the first outdoor heat exchanger 9, to defrost to the second outdoor heat exchanger 10；Specifically, work as second Room
When external heat exchanger 10 defrosts, the high-temperature high-pressure refrigerant gas that compressor 1 is discharged enters the D valve of four-way valve 3 by oil eliminator 2
Mouthful, heat exchanger is entered the room after the outflow of E valve port, becomes medium temperature high pressure liquid refrigerant through heat exchange, is expanded through indoor electronic
Valve enters the 4th solenoid valve 7, enters second Room external heat exchanger 10 after the 4th solenoid valve 7 out, in the second outdoor heat exchanger 10, frost
Layer absorbs heat and melts, and medium temperature high-pressure refrigerant is released thermal temperature and reduced, and enters first through the second outdoor electrical expansion valve 12
Become low temperature low pressure liquid refrigerants after 11 reducing pressure by regulating flow of outdoor electrical expansion valve, into 9 evaporation endothermic of the first outdoor heat exchanger
Become low-temperature low-pressure refrigerant gas, the C valve port of four-way valve 3 is entered through the first solenoid valve 4, goes out from S valve port and enter gas-liquid separation
Device 17 is absorbed by compressor 1.
Preferably, in conjunction with above scheme, as shown in Figures 1 to 5, in the present embodiment, when the first outdoor heat exchanger 9 and second
When outdoor heat exchanger 10 reaches defrosting preset value, first flow path a is by flow path control assembly so that 9 He of the first outdoor heat exchanger
Second outdoor heat exchanger 10 forms serial flow circuit, to defrost to the first outdoor heat exchanger 9 and the second outdoor heat exchanger 10.
Preferably, in conjunction with above scheme, as shown in Figures 1 to 5, in the present embodiment, when the first outdoor heat exchanger 9, second
Outdoor heat exchanger 10 is not up to defrosting condition, i.e., in the high-temperature high-pressure refrigerant that when normally heating state, compressor 1 is discharged
Gas enters the D valve port of four-way valve 3 by oil eliminator 2, from being entered the room during heat exchanger becomes through heat exchange after the outflow of E valve port
Warm high pressure liquid refrigerant enters the 5th solenoid valve 8 through indoor electronic expansion valve, out respectively through the first electricity after the 5th solenoid valve 8
Sub- expansion valve 11,12 reducing pressure by regulating flow of the second electric expansion valve become low temperature low pressure liquid refrigerants, respectively enter the first outdoor and change
Hot device 9, the second outdoor heat exchanger 10, the liquid refrigerant evaporation endothermic in the first outdoor heat exchanger 9, the second outdoor heat exchanger 10
Become low-temperature low-pressure refrigerant gas, enters the C valve port of four-way valve 3 through the first solenoid valve 4, second solenoid valve 5 respectively, from S valve
Mouth goes out to enter gas-liquid separator 17, is absorbed by compressor 1.
Preferably, it in conjunction with above scheme, as shown in Figures 1 to 5, in the present embodiment, is removed when the first outdoor heat exchanger 9 reaches
When white preset value, the first connection branch d is blocked, and the solenoid valve 4 on the first outdoor heat exchanger branch e1 is closed, so that first is outdoor
Serial flow circuit is formed between heat exchanger 9 and the second outdoor heat exchanger 10, first flow path a passes through parallel flow paths and the first outdoor heat exchange
Device branch e1 connection, to defrost to the first outdoor heat exchanger 9；When the second outdoor heat exchanger 10 reaches defrosting preset value
When, the first connection branch d is blocked, and the solenoid valve 5 on the second outdoor heat exchanger branch e2 is closed, so that the second outdoor heat exchanger 10
And first form serial flow circuit between outdoor heat exchanger 9, first flow path a passes through parallel flow paths and the second outdoor heat exchanger branch e2
Connection, to defrost to the second outdoor heat exchanger 10；When the first outdoor heat exchanger 9 and the second outdoor heat exchanger 10 reach
To defrosting preset value when, first connection branch d block, first flow path a pass through parallel flow paths and the first outdoor heat exchanger branch e1
Or second outdoor heat exchanger branch e2 connection, defrost respectively to the first outdoor heat exchanger 9 and the second outdoor heat exchanger 10；Room
During external heat exchanger 9 or outdoor heat exchanger 10 defrost, to guarantee that low windscreen is arranged in defrosting effect, indoor heat exchanger blower, improve
Indoor heat exchanger refrigerant exit temperature, i.e. defrosting fluid temperature.
Preferably, it in conjunction with above scheme, as shown in Figures 1 to 5, in the present embodiment, is removed when the first outdoor heat exchanger 9 reaches
When white preset value, the first solenoid valve 4 is closed, the 4th solenoid valve 7 is closed and the 5th solenoid valve 8 is closed, and second solenoid valve 5 is opened
Open, third solenoid valve 6 open so that the first outdoor heat exchanger 9 and the second outdoor heat exchanger 10 series connection and directly with four-way valve 3
Third end C connection；When the second outdoor heat exchanger 10 reaches defrosting preset value, second solenoid valve 5 is closed, third solenoid valve 6 closes
It closes and the 5th solenoid valve 8 is closed, the first solenoid valve 4 is opened, and the 4th solenoid valve 7 is opened, so that the second outdoor heat exchanger 9 and the
One outdoor heat exchanger 10 is connected and is directly connected to the third end C of four-way valve 3.
Correspondingly, in conjunction with above scheme, as shown in Figures 1 to 5, the present invention also provides a kind of air-conditioner defrosting method, applications
In air-conditioning refrigeration system described above；The following steps are included:
When any one of the first outdoor heat exchanger 9 or the second outdoor heat exchanger 10 reach defrosting preset value, flow path control group
Series operation when part makes any of the first outdoor heat exchanger 9 and the second outdoor heat exchanger 10 need to defrost, and refrigerant is first
The outdoor heat exchanger for needing to defrost is flowed through, the outdoor heat exchanger for not needing defrosting is passed through；Refrigerant is flowing through what needs defrosted
Heat release is absorbed heat in flowing through the outdoor heat exchanger for not needing defrosting at low temperature low pressure liquid refrigerants, refrigerant in outdoor heat exchanger
Become low-temperature low-pressure refrigerant gas.
Preferably, in conjunction with above scheme, as shown in Figures 1 to 5, in the present embodiment, First Heat Exchanger 9 is set to the first Room
On external heat exchanger branch e1；Second heat exchanger 10 is set on the second outdoor heat exchanger branch e2；Flow path control assembly includes the
One flow path control assembly c1 and second flow path control assembly c2；First outdoor heat exchanger one end branch e1 is connect with first flow path a,
Its other end is connect with the third end C of four-way valve 3；Second outdoor heat exchanger one end branch e2 is connect with first flow path a, another
End is connect with the third end C of four-way valve 3；First flow path one end control assembly c1 connects first flow path a, other end connection first
Outdoor heat exchanger branch e1；Be respectively equipped on first outdoor heat exchanger branch e1 and the second outdoor heat exchanger branch e2 solenoid valve and
Outdoor electrical expansion valve；First solenoid valve 4 is set between the first outdoor heat exchanger 9 and four-way valve 3 and second solenoid valve 5
It is set between the second outdoor heat exchanger 10 and four-way valve 3；Outdoor electrical expansion valve 11 is set to the first outdoor heat exchanger 9 and
Between one connection branch d and outdoor electrical expansion valve 12 be set to the second outdoor heat exchanger 10 and the first connection branch d it
Between；First connection branch d and flow path control assembly are equipped with the 5th solenoid valve 8；In this way, being removed when the first outdoor heat exchanger 9 reaches
When white preset value, the first solenoid valve 4, the 4th solenoid valve 7 and the 5th solenoid valve 8 are closed；Second solenoid valve 5, third solenoid valve 6
It opens, so that the first outdoor heat exchanger branch e1, the second outdoor heat exchanger branch e2 connect with first flow path a, and refrigerant
It first flows through the progress heat release of the first outdoor heat exchanger 9 to defrost, passes through the second outdoor heat exchanger 10；Further, when second
When outdoor heat exchanger 10 reaches defrosting preset value, second solenoid valve 5, third solenoid valve 6 and the 5th solenoid valve 8 are closed；First
Solenoid valve 4, the 4th solenoid valve 7 open so that the first outdoor heat exchanger branch e1, the second outdoor heat exchanger branch e2 with it is first-class
Road a series connection, and refrigerant first flows through the progress heat release of the second outdoor heat exchanger 10 and defrosts, and passes through the first outdoor heat exchanger
9；Further, when the first outdoor heat exchanger 9 and the second outdoor heat exchanger 10 reach defrosting preset value, flow path control assembly is first
It defrosts to the first outdoor heat exchanger (9), completes again to remove the second outdoor heat exchanger (10) to the first outdoor heat exchanger (9) defrosting
Frost；Specific implementation process includes: that the first solenoid valve 4, the 4th solenoid valve 7 and the 5th solenoid valve 8 are closed, second solenoid valve 5, the
Three solenoid valves 6 are opened, so that the first outdoor heat exchanger branch e1, the second outdoor heat exchanger branch e2 connect with first flow path a, system
Cryogen first flows through the progress heat release of the first outdoor heat exchanger 9 and defrosts, and passes through the second outdoor heat exchanger 10 and carries out heat release progress
Defrosting or heat absorption evaporation, at this point, the blower gear of indoor heat exchanger is reduced, to improve the temperature that indoor heat exchanger comes out refrigerant
Degree；Or after defrosting to the first outdoor heat exchanger 9, second solenoid valve 5, the closing of third solenoid valve 6, the 5th solenoid valve 8
It closes；First solenoid valve 4, the 4th solenoid valve 7 are opened, so that the second outdoor heat exchanger branch e2, the first outdoor heat exchanger branch
E1, it connects with first flow path a, refrigerant first flows through the second outdoor heat exchanger 10 and carries out heat release, passes through the first outdoor heat exchanger 9
Heat release defrosting or heat absorption evaporation are carried out, and reduces the blower gear of indoor heat exchanger.
Correspondingly, in conjunction with above scheme, the present invention also provides a kind of air conditioners, including remove defrosting system, described to remove defrosting system
For air-conditioning refrigeration system described above.
Using the above scheme, so that the present invention has the following technical effect that
The first, it is defrosted using the medium temperature refrigerant heat in indoor heat exchanger, improves heat exchange efficiency, energy saving；
The second, outdoor heat exchanger does not need four-way valve commutation during defrosting, reduces noise, improves defrosting efficiency；
Third, outdoor heat exchanger defrosting and indoor heat exchanger are heated while being carried out, and improve air conditioning comfortableness.
The above, only presently preferred embodiments of the present invention not do limitation in any form to the present invention.It is any ripe
Those skilled in the art is known, without departing from the scope of the technical proposal of the invention, all using technology contents described above
Many possible changes and modifications or equivalent example modified to equivalent change are made to technical solution of the present invention.Therefore, all
It is the content without departing from technical solution of the present invention, any change modification made to the above embodiment of technology according to the present invention,
Equivalent variations and modification belong to the protection scope of the technical program.
Claims (13)
1. a kind of air-conditioning refrigeration system, which is characterized in that including indoor heat exchanger and outdoor heat exchanger；The outdoor heat exchanger packet
Include the first outdoor heat exchanger (9) and the second outdoor heat exchanger (10)；The outdoor heat exchanger passes through first flow path (a) and the room
Interior heat exchanger connection；The outdoor heat exchanger is equipped with flow path control assembly；The flow path control assembly makes first outdoor
Series operation both when any of heat exchanger (9) and second outdoor heat exchanger (10) need to defrost, and refrigerant is first
The outdoor heat exchanger for needing to defrost is flowed through, the outdoor heat exchanger for not needing defrosting is passed through；The refrigerant is removed flowing through needs
Heat release does not need the outdoor heat exchange of defrosting flowing through at low temperature low pressure liquid refrigerants, the refrigerant in the outdoor heat exchanger of frost
Heat absorption becomes low-temperature low-pressure refrigerant gas in device.
2. air-conditioning refrigeration system according to claim 1, which is characterized in that first outdoor heat exchanger (9) and described
When second outdoor heat exchanger (10) is required to defrosting, both the flow path control assembly makes series operation first changes the first outdoor
Hot device (9) defrosting；The flow path control assembly makes refrigerant first flow through the first outdoor heat exchanger (9) heat release, passes through second Room
External heat exchanger (10) evaporation endothermic；After the completion of first outdoor heat exchanger (9) defrosting, then the first outdoor heat exchanger (10) is removed
Frost, the refrigerant first flow through the second outdoor heat exchanger (10) heat release, pass through the first outdoor heat exchanger (9) evaporation endothermic.
3. air-conditioning refrigeration system according to claim 1, which is characterized in that further include compressor (1), oil eliminator (2),
Four-way valve (3) and gas-liquid separator (17)；The inlet end of the oil eliminator (2) is connected with the compressor (1) exhaust end,
The end of going out of the oil eliminator (2) is connect with the first end (D) of the four-way valve (3)；The gas-liquid separator (17) into
Mouth end is connect with the second end (S) of the four-way valve (3)；The outlet end and the compressor (1) of the gas-liquid separator (17)
Suction end be connected；The outdoor heat exchanger is connect by second flow path (b) with the third end (C) of the four-way valve (3), described
Indoor heat exchanger is connect with the 4th end (E) of the four-way valve (3), to form refrigeration cycle or heating circulation loop.
4. air-conditioning refrigeration system according to claim 3, which is characterized in that first outdoor heat exchanger (9) and described
Second outdoor heat exchanger (10) is respectively arranged at outdoor heat exchanger branch road；Outdoor heat exchanger branch one end connects by first
It connects branch (d) to connect with the first flow path (a), the outdoor heat exchanger branch other end is connect with the second flow path (b)；
The outdoor heat exchanger branch road is equipped with the first solenoid valve and outdoor electrical expansion valve；The solenoid valve is set to first Room
Between external heat exchanger (9) and the four-way valve (3) and the solenoid valve is set to second outdoor heat exchanger (10) and institute
It states between four-way valve (3)；Outdoor electrical expansion valve is set to first outdoor heat exchanger (9) and the first connection branch
(d) between and outdoor electrical expansion valve is set between second outdoor heat exchanger and first connection branch (d)；
First connection branch (d) and the flow path control assembly respectively include solenoid valve.
5. air-conditioning refrigeration system according to claim 4, which is characterized in that the outdoor heat exchanger branch includes the first Room
External heat exchanger branch (e1) and the second outdoor heat exchanger branch (e2)；It is outdoor that the First Heat Exchanger (9) is set to described first
On heat exchanger branch (e1)；Second heat exchanger (10) is set on the second outdoor heat exchanger branch (e2)；The stream
Road control assembly includes first flow path control assembly (c1) and second flow path control assembly (c2)；The first outdoor heat exchanger branch
Road one end (e1) is connect with the first flow path (a), and the other end is connect with the third end (C) of the four-way valve (3)；Described
Two outdoor heat exchanger branch one end (e2) are connect with the first flow path (a), the third end of the other end and the four-way valve (3)
(C) it connects；Described first flow path control assembly one end (c1) connects the first flow path (a), other end connection described first
Outdoor heat exchanger branch (e1), so that first outdoor heat exchanger (9) and second outdoor heat exchanger (10) form series connection
Circuit.
6. air-conditioning refrigeration system according to claim 5, which is characterized in that the first outdoor heat exchanger branch (e1) and
The second outdoor heat exchanger branch (e2) is connect by the first connection branch (d) with the first flow path (a)；First Room
External heat exchanger branch (e1) is equipped with the first solenoid valve (4) and the first outdoor electrical expansion valve (11), first solenoid valve (4)
Between first outdoor heat exchanger (9) and the second flow path (b), the first outdoor electrical expansion valve (11) is located at
Between first outdoor heat exchanger (9) and first connection branch (d)；It is set on the second outdoor heat exchanger branch (e2)
There are second solenoid valve (5) and the second outdoor electrical expansion valve (12), the second solenoid valve (5) is located at second outdoor heat exchange
Between device (10) and the second flow path (b), the second outdoor electrical expansion valve (12) is located at second outdoor heat exchange
(10) between device and first connection branch (d)；It is described first connection branch (d) be equipped with the 5th solenoid valve, described first
Flow path control assembly (c1) includes third solenoid valve (6), and the second flow path control assembly (c2) includes the 4th solenoid valve (7)；
First connection branch (d) is equipped with the 5th solenoid valve (8).
7. air-conditioning refrigeration system according to claim 1, which is characterized in that the indoor heat exchanger includes that multiple interiors are changed
Hot device；Multiple indoor heat exchangers are arranged side by side each by indoor heat exchanger branch；Multiple indoor heat exchanger branches
It is connect respectively with the first flow path (a) and the four-way valve (3).
8. air-conditioning refrigeration system according to claim 7, which is characterized in that the indoor heat exchanger branch road is equipped with interior
Electric expansion valve；The indoor electronic expansion valve is set between the indoor heat exchanger and the first flow path (a).
9. air-conditioning refrigeration system according to claim 1, which is characterized in that when first outdoor heat exchanger (9) reaches
When defrosting preset value, the first flow path (a) is connected to first outdoor heat exchanger (9) by the flow path control assembly, with
First outdoor heat exchanger (9) and second outdoor heat exchanger (10) is set to form serial flow circuit, thus to first Room
External heat exchanger (9) defrosts；Or, when second outdoor heat exchanger (10) reaches defrosting preset value, the first flow path
(a) second outdoor heat exchanger (10) is connected to by the flow path control assembly, so that second outdoor heat exchanger (10)
Serial flow circuit is formed with first outdoor heat exchanger (9), to defrost to second outdoor heat exchanger (10)；Or,
It is described first-class when first outdoor heat exchanger (9) and second outdoor heat exchanger (10) reach defrosting preset value
Road (a) is by the flow path control assembly so that first outdoor heat exchanger (9) and second outdoor heat exchanger (10) shape
It at serial flow circuit, first defrosts to first outdoor heat exchanger (9), then second outdoor heat exchanger (10) is removed
Frost.
10. air-conditioning refrigeration system according to claim 6, which is characterized in that when first outdoor heat exchanger (9) reaches
When defrosting preset value, first solenoid valve (4) is closed, the 4th solenoid valve (7) is closed and the 5th solenoid valve (8) is closed
It closes, the second solenoid valve (5) is opened, and the third solenoid valve (6) is opened, so that first outdoor heat exchanger and described the
Two outdoor heat exchangers are connected and are directly connected to the third end (C) of the four-way valve；When second outdoor heat exchanger (10) reaches
When to defrosting preset value, the second solenoid valve (5) is closed, third solenoid valve (6) is closed and the 5th solenoid valve (8) is closed
It closes, first solenoid valve (4) is opened, and the 4th solenoid valve (7) is opened, so that second outdoor heat exchanger (10) and institute
The first outdoor heat exchanger (9) are stated to connect and be directly connected to the third end (C) of the four-way valve (3).
11. a kind of air-conditioner defrosting method, which is characterized in that applied to air-conditioning refrigeration system described in the claims 1；Including
Following steps:
When any one of first outdoor heat exchanger (9) or second outdoor heat exchanger (10) reach defrosting preset value, institute
Stating flow path control assembly makes any of first outdoor heat exchanger (9) and described second outdoor heat exchanger (10) need to defrost
When series operation, and refrigerant first flows through and needs the outdoor heat exchanger that defrosts, passes through the outdoor heat exchanger for not needing defrosting；
Refrigerant heat release in flowing through the outdoor heat exchanger that needs defrost is being flowed at low temperature low pressure liquid refrigerants, the refrigerant
Heat absorption becomes low-temperature low-pressure refrigerant gas in outdoor heat exchanger through not needing defrosting.
12. air-conditioner defrosting method according to claim 12, which is characterized in that the First Heat Exchanger (9) is set to
On one outdoor heat exchanger branch (e1)；Second heat exchanger (10) is set on the second outdoor heat exchanger branch (e2)；It is described
Flow path control assembly includes first flow path control assembly (c1) and second flow path control assembly (c2)；First outdoor heat exchanger
Branch one end (e1) is connect with the first flow path (a), and the other end is connect with the third end (C) of four-way valve (3)；Described second
Outdoor heat exchanger branch one end (e2) is connect with the first flow path (a), the third end of the other end and the four-way valve (3)
(C) it connects；Described first flow path control assembly one end (c1) connects the first flow path (a), other end connection described first
Outdoor heat exchanger branch (e1)；Divide on the first outdoor heat exchanger branch (e1) and the second outdoor heat exchanger branch (e2)
It She You not solenoid valve and outdoor electrical expansion valve；First solenoid valve (4) is set to first outdoor heat exchanger (9) and described four
Between port valve (3) and second solenoid valve (5) is set between second outdoor heat exchanger (10) and the four-way valve (3)；
First outdoor electrical expansion valve (11) is set between first outdoor heat exchanger (9) and first connection branch (d), with
And second outdoor electrical expansion valve (12) be set to second outdoor heat exchanger (10) and it is described first connection branch (d) it
Between；The first flow path control assembly (c1) includes third solenoid valve (6), and the second flow path control assembly (c2) includes the 4th
Solenoid valve (7)；First connection branch (d) is equipped with the 5th solenoid valve (8)；
When first outdoor heat exchanger (9) reaches defrosting preset value, the first solenoid valve (4), the 4th solenoid valve (7) and the
Five solenoid valves (8) are closed；Second solenoid valve (5), third solenoid valve (6) are opened, so that the first outdoor heat exchanger branch
(e1), the second outdoor heat exchanger branch (e2) is connected with the first flow path (a), and refrigerant first flows through the first outdoor heat exchange
Device (9) carries out heat release, passes through the second outdoor heat exchanger (10)；
When second outdoor heat exchanger (10) reach defrosting preset value when, second solenoid valve (5), third solenoid valve (6) and
5th solenoid valve (8) is closed；First solenoid valve (4), the 4th solenoid valve (7) are opened, so that the first outdoor heat exchanger branch
(e1), the second outdoor heat exchanger branch (e2) is connected with the first flow path (a), and refrigerant first flows through the second outdoor heat exchange
Device (10) carries out heat release, passes through the first outdoor heat exchanger (9)；
When first outdoor heat exchanger (9) and second outdoor heat exchanger (10) reach defrosting preset value, the first electricity
Magnet valve (4), the 4th solenoid valve (7) and the 5th solenoid valve (8) are closed, and second solenoid valve (5), third solenoid valve (6) are opened, with
So that the first outdoor heat exchanger branch (e1), the second outdoor heat exchanger branch (e2) is connected with the first flow path (a), freezes
Agent first flows through first outdoor heat exchanger (9) and carries out heat release defrosting, passes through second outdoor heat exchanger (10) and is put
Heat defrosting, and reduce the blower gear of indoor heat exchanger.
13. a kind of air conditioner, including remove defrosting system, which is characterized in that it is described except defrosting system is that the claims 1 to 10 are any
Air-conditioning refrigeration system described in.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811434784.3A CN109442794A (en) | 2018-11-28 | 2018-11-28 | A kind of air-conditioning refrigeration system, Defrost method and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811434784.3A CN109442794A (en) | 2018-11-28 | 2018-11-28 | A kind of air-conditioning refrigeration system, Defrost method and air conditioner |
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| CN110762757A (en) * | 2019-11-06 | 2020-02-07 | 青岛海尔空调电子有限公司 | Air conditioning system and control method thereof |
| CN113357843A (en) * | 2020-03-04 | 2021-09-07 | 青岛海尔空调电子有限公司 | Air conditioning system and defrosting control method thereof |
| CN116182422A (en) * | 2023-02-17 | 2023-05-30 | 青岛海尔空调电子有限公司 | Heat pump system and its control method and control device |
| CN116465113A (en) * | 2023-04-20 | 2023-07-21 | 哈尔滨工业大学 | A gas-driven air-source heat pump unit with adjustable defrosting and uninterrupted heating |
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Application publication date: 20190308 |