CN106766334A - A kind of air conditioner circulating system and control method - Google Patents
A kind of air conditioner circulating system and control method Download PDFInfo
- Publication number
- CN106766334A CN106766334A CN201710005790.6A CN201710005790A CN106766334A CN 106766334 A CN106766334 A CN 106766334A CN 201710005790 A CN201710005790 A CN 201710005790A CN 106766334 A CN106766334 A CN 106766334A
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- China
- Prior art keywords
- heat exchanger
- outdoor heat
- compressor
- control device
- air conditioner
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- 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.)
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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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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
- F25B47/022—Defrosting cycles hot gas defrosting
- F25B47/025—Defrosting cycles hot gas defrosting by reversing the 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
- 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
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
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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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
Abstract
The present invention provides a kind of air conditioner circulating system and control method, is related to air-conditioning technical field, is the frosting that can quickly remove in a short time on condenser, and defrosting is thoroughly invented.A kind of air conditioner circulating system, including indoor heat exchanger, outdoor heat exchanger and compressor, the indoor heat exchanger and the outdoor heat exchanger form circulation loop, circulation has refrigerant in the circulation loop, the circulation loop is connected with four-way valve, and the inlet and outlet of the compressor is connected with the four-way valve, also including defrosting branch road, one end of the defrosting branch road is connected with the outlet of the compressor, and pipeline of the other end with the outdoor heat exchanger near bottom is connected.Defrosting of the present invention for outdoor heat exchanger of air conditioner.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of air conditioner circulating system and control method.
Background technology
At present, splitting heat pump air conditioner is in heating process, and outdoor heat exchanger is relatively low due to temperature, easily produces knot
White phenomenon, and then influence the performance of air-conditioning.In order to be defrosted to outdoor heat exchanger, existing technology is substantially by collection
Indoor coil pipe value, defrosting is driven by control logic treatment.It is exactly normal kind of refrigeration cycle that the process of its defrosting is actual
HTHP refrigerant after process, i.e. compressor compresses is defrosted by refrigeration circuit into outdoor heat exchanger.
But, during outdoor heat exchanger defrosting, on the one hand to ensure indoor heating effect, the time of defrosting is unsuitable
It is long；On the other hand because the high temperature refrigerant discharged from compressor is by after outdoor heat exchanger radiating, reaching outdoor heat exchanger bottom
Condensed water after portion has reduced more close to the temperature in exit, and outdoor heat exchanger top is defrosted is past dirty from top to bottom,
Further suppress the defrosting effect of bottom.Therefore, thoroughly cannot be removed on outdoor heat exchanger by this technology merely at present
Frosting.
The content of the invention
Embodiments of the invention provide a kind of air conditioner circulating system, and the knot on condenser can be quickly removed in a short time
Frost, and defrosting is thorough.
To reach above-mentioned purpose, embodiments of the invention are adopted the following technical scheme that：
A kind of air conditioner circulating system, including indoor heat exchanger, outdoor heat exchanger and compressor, the indoor heat exchanger and institute
Stating outdoor heat exchanger and being formed to be circulated in circulation loop, the circulation loop has refrigerant, and the circulation loop is connected with four-way valve, institute
The inlet and outlet for stating compressor is connected with the four-way valve, also including defrosting branch road, one end of the defrosting branch road and institute
The outlet connection of compressor is stated, pipeline of the other end with the outdoor heat exchanger near bottom is connected.
The air conditioner circulating system air-conditioner of the embodiment of the present invention, including indoor heat exchanger, outdoor heat exchanger and compressor, room
Interior heat exchanger and outdoor heat exchanger form circulation in circulation loop, circulation loop refrigerant, and circulation loop is connected with four-way valve, pressure
The inlet and outlet of contracting machine is connected with the four-way valve, and by the switching of four-way valve, refrigerant can be in compressor, indoor heat exchanger
Circulated and outdoor heat exchanger between, and change direction, realized the refrigeration of air-conditioning or heat circulation.Meanwhile, for quickly defrosting, also
Including defrosting branch road, the one end for the branch road that defrosts is connected with the outlet of compressor, the pipe of the other end and outdoor heat exchanger near bottom
Road is connected, and so, when outdoor heat exchanger needs defrosting, air-conditioning is switched into refrigerating state by four-way valve, and compressor is produced
HTHP refrigerant two pipelines be divided into by the outlet of compressor enter outdoor heat exchanger, wherein, a pipeline is by compressing
Machine is exported by four-way valve, and subsequently into outdoor heat exchanger, another pipeline is by the branch road into outdoor heat exchanger that defrosts
Bottom position, so, HTHP refrigerant is entered in outdoor heat exchanger by two positions of outdoor heat exchanger, and by defrosting branch road
Refrigerant into outdoor heat exchanger is applied directly to the bottom of outdoor heat exchanger, compared to existing technology, can be quick in a short time
The frosting on outdoor heat exchanger is removed, and the defrosting effect of the bottom of outdoor heat exchanger is preferable, and then it is thorough to defrost.
When following device is included in the air-conditioning system of the embodiment of the present invention：Switch valve is in series with defrosting branch road；
Also include control device and detection unit, the four-way valve and the switch valve are electrically connected with the control device
Connect, the detection unit is arranged on the outdoor unit evaporator, and electrically connected with the control device, the detection unit can
The frosting index of the outdoor heat exchanger is detected, and passes to the control device, the control device can be according to the detection
Unit detection frosting index, judge the outdoor heat exchanger whether need defrosting, and control the four-way Vavle switching and
The unidirectional two-port valve (i.e. switch valve) opens or closes.
So, on the other hand the embodiment of the present invention additionally provides a kind of control method, comprises the following steps：
Detect the frosting index of the outdoor heat exchanger；
Judge whether the outdoor heat exchanger needs defrosting；
When the outdoor heat exchanger needs defrosting, the control device controls the four-way Vavle switching, makes the compressor
Outlet connected with the outdoor heat exchanger by the four-way valve, meanwhile, the control device controls the switch valve to open,
Turn on the defrosting branch road；
When the outdoor heat exchanger need not defrost, the control device controls the four-way Vavle switching, makes the compression
The outlet of machine is connected by the four-way valve with the outdoor heat exchanger, meanwhile, the control device controls the switch valve to close
Close.
Control method provided in an embodiment of the present invention, is referred to receiving the frosting that detection unit is detected by control device
Mark, judges whether outdoor heat exchanger needs defrosting, when outdoor heat exchanger needs defrosting, control device control four-way Vavle switching,
The outlet of compressor is set to be connected with outdoor heat exchanger by four-way valve, meanwhile, control device controlling switch valve is opened, and makes defrosting branch
Road turns on.Now, the HTHP refrigerant that compressor is produced is divided into two pipelines and enters outdoor heat exchanger by the outlet of compressor,
Wherein, a pipeline is that, by four-way valve, subsequently into outdoor heat exchanger, another pipeline is by defrosting by compressor outlet
Branch road enters the bottom position of outdoor heat exchanger, and then quick to outdoor heat exchanger defrosting.When outdoor heat exchanger need not defrost
When, control device control four-way Vavle switching makes the outlet of compressor be connected with indoor heat exchanger by four-way valve, meanwhile, control
Device controlling switch valve is closed.Now, air-conditioner enters normal heating mode, is heated with to interior.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
Other accompanying drawings are obtained with according to these accompanying drawings.
Fig. 1 is the system structure diagram of air conditioner circulating system provided in an embodiment of the present invention；
The step of Fig. 2 is control method provided in an embodiment of the present invention flow chart.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Company ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can
Being to mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
Two connections of element internal.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
The embodiment of the present invention provides a kind of air conditioner circulating system, as shown in figure 1, including indoor heat exchanger 1, outdoor heat exchanger
2 and compressor 3, indoor heat exchanger 1 and outdoor heat exchanger 2 form circulation in circulation loop, circulation loop and have refrigerant, circulation loop
Four-way valve 4 is connected with, the inlet and outlet of compressor 3 is connected with four-way valve 4, also including defrosting branch road 5, defrosting branch road 5
One end is connected with the outlet of compressor 3, and pipeline of the other end with outdoor heat exchanger 2 near bottom is connected.
The air conditioner circulating system air-conditioner of the embodiment of the present invention, including indoor heat exchanger 1, outdoor heat exchanger 2 and compressor
3, indoor heat exchanger 1 and outdoor heat exchanger 2 form circulation in circulation loop, circulation loop and have refrigerant, and circulation loop is connected with four
Port valve 4, the inlet and outlet of compressor 3 is connected with four-way valve 4, and by the switching of four-way valve 4, refrigerant can be in compressor 3, room
Circulated between interior heat exchanger 1 and outdoor heat exchanger 2, and change direction, realized the refrigeration of air-conditioning or heat circulation.Meanwhile, in order to
Quickly defrosting, also including defrosting branch road 5, the one end for the branch road 5 that defrosts is connected with the outlet of compressor 3, the other end and outdoor heat exchange
Pipeline of the device 2 near bottom is connected, and so, when outdoor heat exchanger 2 needs defrosting, air-conditioning is switched into system by four-way valve 4
Cold state, the HTHP refrigerant that compressor 3 is produced is divided into two pipelines into outdoor heat exchanger 2 by the outlet of compressor 3, its
In, a pipeline is exported by four-way valve 4 by compressor 3, and subsequently into outdoor heat exchanger 2, another pipeline is by removing
White branch road 5 enters the bottom position of outdoor heat exchanger 2, and so, HTHP refrigerant is entered by two positions of outdoor heat exchanger 2
In outdoor heat exchanger 2, and the bottom of outdoor heat exchanger 2 is applied directly into the refrigerant of outdoor heat exchanger 2 by defrosting branch road 5,
Compared to existing technology, the frosting on outdoor heat exchanger 2 can be quickly removed in a short time, and the bottom of outdoor heat exchanger 2 is removed
White effect preferably, and then defrosts thoroughly.
When that need not defrost, defrosting branch road 5 should not be connected outdoor heat exchanger 2, to ensure the performance of air-conditioner, because
This, as shown in figure 1, being in series with switch valve 6 in defrosting branch road 5, by opening or closing for switch valve 6, can control defrosting branch road 5
Connection or closing, and then when outdoor heat exchanger 2 need not defrost, defrosting branch road 5 can be closed, to ensure the property of air-conditioner
Energy.
When being defrosted to outdoor heat exchanger 2, switch valve 6 is opened, because the HTHP refrigerant in compressor 3 is from outdoor
Two positions of heat exchanger 2 enter outdoor heat exchanger 2, in that way it is possible to make enter outdoor heat exchanger 2 refrigerant from defrosting branch road 5
It is interior to be flowed back towards compressor 3, and then defrosting effect is influenceed, therefore, in order to avoid there is backflow now in the refrigerant in defrosting branch road 5
As switch valve 6 is check valve, and when check valve is opened, refrigerant flows to outdoor heat exchanger 2 from compressor 3.So, check valve is beaten
When opening, refrigerant is only allowed to flow to outdoor heat exchanger 2 from compressor 3, and then it is existing to avoid the refrigerant defrosted in branch road 5 that backflow occurs
As.
In air-conditioning normal course of operation, refrigerant finally flows back to compressor 3 by outdoor heat exchanger 2 and indoor heat exchanger 1
It is interior, but, the form of refrigerant in compressor 3 often liquid and the state of gaseous state mixing are flowed back into, in order that into compression
The refrigerant of machine 3 is gaseous, as shown in figure 1, being in series with gas-liquid separator 7, gas-liquid between the import of compressor 3 and four-way valve 4
Separator 7 can separate the refrigerant of gaseous refrigerant and liquid, and the refrigerant for making to enter compressor 3 is gaseous state.
Switched by four-way valve 4, the circular order of refrigerant in the circulatory system of air-conditioning can be changed, and then realize air-conditioning
Refrigeration or heat, reference picture 1, four-way valve 4 includes four interfaces, and the inlet and outlet of two of which interface and compressor connects
Connect, another two interface is connected with the outlet of indoor heat exchanger 1 and the import of outdoor heat exchanger 2, the import of indoor heat exchanger 1 and room
The outlet of external heat exchanger 2 is connected by throttle part 8.When four-way valve 4 connects the outlet of compressor 3 with outdoor heat exchanger 2, and
When the import of compressor 3 is connected with indoor heat exchanger 1, the path as shown in solid arrow in Fig. 1, the refrigerant warp in compressor 3
The outlet of overcompression machine 3 enters outdoor heat exchanger 2, then gets in heat exchanger 1 by outdoor heat exchanger 2, finally by indoor heat exchange
Device 1 is returned in compressor 3, and then realizes the refrigeration of air-conditioning；When four-way valve 4 connects the outlet of compressor 3 with indoor heat exchanger 1
It is logical, and the import of compressor 3, when being connected with outdoor heat exchanger 2, path as indicated by the dashed arrow in fig. 1 is cold in compressor 3
Matchmaker gets in heat exchanger 1 by the outlet of compressor 3, then enters outdoor heat exchanger 2 by indoor heat exchanger 1, finally by outdoor
Heat exchanger 2 is returned in compressor 3, and then realizes heating for air-conditioning.Meanwhile, the import of indoor heat exchanger 1 and outdoor heat exchanger 2
Outlet is connected by throttle part 8, and throttle part 8 can play a part of step-down throttling, can prevent in outdoor heat exchanger 2
Normal temperature high voltage liquid refrigerants is directly entered evaporator, reduces the pressure in indoor heat exchanger 1, is conducive to the evaporation of refrigerant.Wherein,
Throttle part 8 is generally capillary, between the import of solderable heat exchanger indoors 1 and the outlet of outdoor heat exchanger 2.
The switching of four-way valve 4 and switch valve 6 or break-make can also can be automatically controlled with manually operated using control device.
Certainly, the scheme for being automatically controlled using control device more facilitates accurate, it is therefore preferred that the air-conditioning of the embodiment of the present invention is followed
Loop systems also include control device and detection unit, and four-way valve 4 and switch valve 6 are electrically connected with control device, and detection unit sets
Put on outdoor unit evaporator 2, and electrically connected with control device, the frosting index of the detectable outdoor heat exchanger 2 of detection unit, and
Control device is passed to, the frosting index that control device can be detected according to detection unit judges whether outdoor heat exchanger 2 needs
Defrosting, and control that four-way valve 4 switches and switch valve 6 is opened or closed.
When being defrosted due to outdoor heat exchanger 2, the kind of refrigeration cycle time of air-conditioning is unsuitable long, otherwise influences indoor heat exchanger 1
Heating effect, therefore, be the time of accurate control room external heat exchanger 2 defrosting, delay switch is provided with control device, time delay is opened
Controllable four-way valve 4 is closed to switch, and the time that switch valve 6 is opened or closed.
When following device is included in the air-conditioning system of the embodiment of the present invention：Switch valve is in series with defrosting branch road；
Also include control device and detection unit, four-way valve and switch valve are electrically connected with control device, and detection unit sets
Put on outdoor unit evaporator, and electrically connected with control device, the frosting index of the detectable outdoor heat exchanger of detection unit, and pass
Control device is passed, the frosting index that control device can be detected according to detection unit judges whether outdoor heat exchanger needs to remove
Frost, and control four-way Vavle switching and unidirectional two-port valve (i.e. switch valve) to open or close.
So, on the other hand the embodiment of the present invention additionally provides a kind of control method, and reference picture 2 is comprised the following steps：
The frosting index of S11, detection outdoor heat exchanger 2；
S12, judge outdoor heat exchanger 2 whether need defrosting；
In step s 12, if outdoor heat exchanger 2 needs defrosting, step S13 is performed, if outdoor heat exchanger 2 need not be removed
When white, then step S14 is performed.
S13, control device control four-way valve 4 switch, and the outlet of compressor 3 is connected with outdoor heat exchanger 2 by four-way valve 4
It is logical, meanwhile, control device controlling switch valve 6 is opened, and turns on defrosting branch road 5；
Now, the refrigerant in air conditioner circulating system presses kind of refrigeration cycle, and outdoor heat exchanger 2 is defrosted.
S14, control device control four-way valve 4 switch, and the outlet of compressor is connected with outdoor heat exchanger 2 by four-way valve 4
It is logical, meanwhile, control device controlling switch valve 6 is closed.
Now, the refrigerant in air conditioner circulating system is heated by circulation is heated to interior.
Control method provided in an embodiment of the present invention, is referred to receiving the frosting that detection unit is detected by control device
Mark, judges whether outdoor heat exchanger 2 needs defrosting, and when outdoor heat exchanger 2 needs defrosting, control device control four-way valve 4 is cut
Change, the outlet of compressor 3 is connected with outdoor heat exchanger 2 by four-way valve 4, meanwhile, control device controlling switch valve 6 is opened,
Turn on defrosting branch road 5.Now, the HTHP refrigerant that compressor 3 is produced is divided into two pipelines and enters by the outlet of compressor 3
Outdoor heat exchanger 2, wherein, a pipeline is exported by four-way valve 4 by compressor 3, another subsequently into outdoor heat exchanger 2
Individual pipeline is to enter the bottom position of outdoor heat exchanger 2 by the branch road 5 that defrosts, and then quickly outdoor heat exchanger 2 is defrosted.Work as room
When external heat exchanger 2 need not defrost, control device control four-way valve 4 switches, and the outlet of compressor 3 is passed through four-way valve 4 and room
Interior heat exchanger 2 is connected, meanwhile, control device controlling switch valve 6 is closed.Now, air-conditioner enters normal heating mode, with right
Interior is heated.
The above, specific embodiment only of the invention, but protection scope of the present invention is not limited thereto, and it is any
Those familiar with the art the invention discloses technical scope in, the change or replacement that can be readily occurred in, all should
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection domain described in claim
It is accurate.
Claims (8)
1. a kind of air conditioner circulating system, including indoor heat exchanger, outdoor heat exchanger and compressor, the indoor heat exchanger and described
Outdoor heat exchanger forms circulation in circulation loop, the circulation loop refrigerant, and the circulation loop is connected with four-way valve, described
The inlet and outlet of compressor is connected with the four-way valve, it is characterised in that also including defrosting branch road, the defrosting branch road
One end is connected with the outlet of the compressor, and pipeline of the other end with the outdoor heat exchanger near bottom is connected.
2. air conditioner circulating system according to claim 1, it is characterised in that be in series with switch valve in the defrosting branch road.
3. air conditioner circulating system according to claim 2, it is characterised in that the switch valve is check valve, when the list
When being opened to valve, the refrigerant flows to the outdoor heat exchanger from the compressor.
4. the air conditioner circulating system according to any one of claims 1 to 3, it is characterised in that the import of the compressor
Gas-liquid separator is in series with and the four-way valve between.
5. the air conditioner circulating system according to any one of claims 1 to 3, it is characterised in that the four-way valve includes four
Individual interface, two of which interface is connected with the inlet and outlet of the compressor, another two interface and the indoor heat exchanger
Outlet and the import of the outdoor heat exchanger are connected, and the import of the indoor heat exchanger and the outlet of the outdoor heat exchanger pass through
Throttle part is connected.
6. air conditioner circulating system according to claim 2, it is characterised in that also including control device and detection unit, institute
State four-way valve and the switch valve to be electrically connected with the control device, the detection unit is arranged on the outdoor unit heat exchanger
On, and electrically connected with the control device, the detection unit can detect the frosting index of the outdoor heat exchanger, and pass to
The control device, the frosting index that the control device can be detected according to the detection unit, judges the outdoor heat exchange
Whether device needs defrosting, and controls the four-way Vavle switching and the switch valve to open or close.
7. air conditioner circulating system according to claim 6, it is characterised in that be provided with delay switch in the control device,
The delay switch can control the four-way Vavle switching, and the time that the switch valve is opened or closed.
8. the control method of a kind of air conditioner circulating system for described in claim 6, it is characterised in that comprise the following steps：
Detect the frosting index of the outdoor heat exchanger；
Judge whether the outdoor heat exchanger needs defrosting；
When the outdoor heat exchanger needs defrosting, the control device controls the four-way Vavle switching, makes going out for the compressor
Mouth is connected by the four-way valve with the outdoor heat exchanger, meanwhile, the control device controls the switch valve to open, and makes institute
State defrosting branch road conducting；
When the outdoor heat exchanger need not defrost, the control device controls the four-way Vavle switching, makes the compressor
Outlet is connected by the four-way valve with the indoor heat exchanger, meanwhile, the control device controls the switch valve to close.
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| CN201710005790.6A CN106766334A (en) | 2017-01-04 | 2017-01-04 | A kind of air conditioner circulating system and control method |
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| CN201710005790.6A CN106766334A (en) | 2017-01-04 | 2017-01-04 | A kind of air conditioner circulating system and control method |
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| CN107101275A (en) * | 2017-06-01 | 2017-08-29 | 青岛海尔空调器有限总公司 | A kind of air conditioner and its control method |
| CN110762746A (en) * | 2018-07-10 | 2020-02-07 | 青岛海尔空调电子有限公司 | Air conditioner and defrosting control method thereof |
| CN111530117A (en) * | 2020-05-18 | 2020-08-14 | 山东冰轮海卓氢能技术研究院有限公司 | Oil gas defrosting system and method for condensation method oil gas recovery device |
| CN114992780A (en) * | 2022-05-18 | 2022-09-02 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107101275A (en) * | 2017-06-01 | 2017-08-29 | 青岛海尔空调器有限总公司 | A kind of air conditioner and its control method |
| CN110762746A (en) * | 2018-07-10 | 2020-02-07 | 青岛海尔空调电子有限公司 | Air conditioner and defrosting control method thereof |
| CN110762746B (en) * | 2018-07-10 | 2021-05-25 | 青岛海尔空调电子有限公司 | Air conditioner and defrosting control method thereof |
| CN111530117A (en) * | 2020-05-18 | 2020-08-14 | 山东冰轮海卓氢能技术研究院有限公司 | Oil gas defrosting system and method for condensation method oil gas recovery device |
| CN114992780A (en) * | 2022-05-18 | 2022-09-02 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
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