CN106440098A - Air-conditioner outdoor unit, defrosting control method and device of air-conditioner outdoor unit and air conditioner - Google Patents
Air-conditioner outdoor unit, defrosting control method and device of air-conditioner outdoor unit and air conditioner Download PDFInfo
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- CN106440098A CN106440098A CN201610808763.8A CN201610808763A CN106440098A CN 106440098 A CN106440098 A CN 106440098A CN 201610808763 A CN201610808763 A CN 201610808763A CN 106440098 A CN106440098 A CN 106440098A
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- Prior art keywords
- valve
- heat exchanger
- air
- way pipe
- outdoor unit
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
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- 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
-
- 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
- F25B41/26—Disposition of valves, e.g. of on-off valves or flow control valves of fluid flow reversing valves
-
- 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
- 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
- F25B2347/00—Details for preventing or removing deposits or corrosion
- F25B2347/02—Details of defrosting cycles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The embodiment of the invention provides an air-conditioner outdoor unit, a defrosting control method and device of the air-conditioner outdoor unit and an air conditioner, relates to the field of air conditioner and solves the problem of poor defrosting of a conventional air-conditioner outdoor unit. The air-conditioner outdoor unit comprises a four-way valve, an outdoor heat exchanger and a compressor, wherein the four-way valve, an indoor heat exchanger and the outdoor heat exchanger are connected end to end; a first end opening of the four-way valve is connected with an outlet of the compressor; a fourth end opening of the four-way valve is connected with an inlet of the compressor; a third end opening of the four-way valve is connected with a first end of the outdoor heat exchanger through a first passage which is provided with a first valve; a second end opening of the four-way valve is connected with a second end of the outdoor heat exchanger through a second passage; a second valve is arranged on a connecting pipeline between the four-way valve and the outdoor heat exchanger; a third valve is arranged on a connecting pipeline between the indoor heat exchanger and the outdoor heat exchanger; and the defrosting control device is used for controlling the opening/closing state of the valves.
Description
Technical field
The present invention relates to field of air conditioning, more particularly, to a kind of air-conditioner outdoor unit and its defrosting control method and device, air-conditioning
Device.
Background technology
In heating operation, outdoor unit heat exchanger can produce frost to air-conditioning, such as runs into the climatic environment of low temperature and high relative humidity,
It is very thick that frost layer can be tied.When frost layer ties certain thickness, during impact heating effect, air-conditioner has to reversely to outdoor heat exchanger
Defrosted.Defrosting principle be：Cross valve commutates, and reverse refrigerating operaton, so that outdoor heat exchanger high temperature, removes frost layer.Former
Reason is as shown in Figure 1.
For considering the efficiency of air-conditioner, the outdoor heat exchanger flow scheme design during defrosting is upper entering and lower leaving, i.e. defrosting fortune
During row state, flow direction in outdoor heat exchanger for the cold-producing medium is upper entering and lower leaving, as indicated by a broken line in fig. 1, the height that compressor 13 is discharged
Warm cold-producing medium, is defrosted by heat release during outdoor heat exchanger 11, after through throttle part 14, stop valve 16, indoor heat exchanger 12, cut
Only valve 17 and cross valve 15 enter back into compressor and complete defrosting circulation.But the mistake of outdoor heat exchanger 11 outlet is reached in cold-producing medium
Cheng Zhong, the temperature of cold-producing medium is continuous reduction, therefore during defrosting, outdoor heat exchanger 11 top defrost speed lower part is fast.Using this
When planting Defrost mode, very big in outside humidity, and under the very low adverse circumstances of temperature, the frost layer on outdoor heat exchanger top melts shape
The water becoming down can trickle along heat exchanger fin gap, and the frost layerization of heat exchanger bottom is thoroughly, the current under overhead stream
Logical not smooth, can directly be frozen into ice sheet and cover in the frost layer of bottom.Frost layer is cumulative, or even the osculum by outdoor unit base
Block the heating effect that can have a strong impact on air-conditioner it is impossible to melt when being converted to heating operation state completely, to solve this
Problem need to extend defrosting time or increase base plate electrical heating, but extends defrosting time and can affect the experience of user, and increases
Base plate electrical heating can increase the power consumption of air-conditioner.
Content of the invention
Embodiments of the invention provide a kind of air-conditioner outdoor unit and its defrosting control method and device, air-conditioner, solve
The bad problem of existing air conditioner outdoor machine defrosting.
For reaching above-mentioned purpose, embodiments of the invention adopt the following technical scheme that：
In a first aspect, providing a kind of air-conditioner outdoor unit, including cross valve, outdoor heat exchanger and compressor；The of cross valve
Single port connects the outlet of compressor, and the second port of cross valve connects the first end of indoor heat exchanger；The of indoor heat exchanger
Two ends connect the first end of outdoor heat exchangers, and the second end of outdoor heat exchanger connects the 3rd port of cross valve, and the of cross valve
Four ports connect the entrance of compressor；
3rd port of cross valve connects the first end of outdoor heat exchanger by first passage, and first passage is provided with
Second valve；
The second port of cross valve connects the second end of outdoor heat exchanger by second channel, and second channel is provided with list
To valve, check valve is used for controlling second channel from the second end of outdoor heat exchanger towards the second port one-way conduction of cross valve；
It is additionally provided with the first valve between 3rd port of cross valve and the second end of outdoor heat exchanger；Indoor heat exchanger
It is additionally provided with the 3rd valve between second end and the first end of outdoor heat exchanger.
Second aspect, provides a kind of defrosting control method of air-conditioner outdoor unit, and the method includes：
In heating operation state, control the first valve and the 3rd valve opening；Control the second valve closing.
In Defrost operation state, control the second valve opening；Control the first valve and the 3rd valve closing.
The third aspect, provides a kind of defrosting control device of air-conditioner outdoor unit, and this device includes：
First control unit, in heating operation state, controlling the first valve and the 3rd valve opening；Control the second valve
Door is closed；Second control unit, in Defrost operation state, controlling the second valve opening；Control the first valve and the 3rd valve
Door is closed.
Fourth aspect, provides a kind of air-conditioner, including first aspect provide air-conditioner outdoor unit and the third aspect provide
Air conditioner outdoor machine defrosting control device.
In the air-conditioner outdoor unit of such scheme offer and its Defrost method and defrosting control device, air-conditioner, by existing
Have in air-conditioner outdoor unit and add three valves, a throttling arrangement and a check valve and by controlling respective state, respectively
Form two different loops in Defrost operation state and heating operation state, when running defrosting state, control the second valve
The first valve and the 3rd valve opening are closed and controlled to door, forms loop during heating operation state, high-temperature high-pressure refrigerant from
After compressor is discharged, heat exchanger can be got in by cross valve, the first three-way pipe and the first stop valve successively and complete heat release, and
The cold-producing medium of low temperature enters outdoor after sequentially passing through the second stop valve, the 3rd valve, first throttle device and the 4th three-way pipe afterwards
Heat exchanger absorbs heat, then returns to compressor after sequentially passing through the 3rd three-way pipe, the first valve, the second three-way pipe and cross valve, completes
One heats circulation；In Defrost operation state, control the second valve opening and control the first valve and the 3rd valve closing, shape
Become loop during heating operation state, after high-temperature high-pressure refrigerant is discharged from compressor, pass sequentially through cross valve, the second threeway
Heat release defrosting is entered from outdoor heat exchanger first end, rear low-temperature refrigerant leads to successively again after pipe, the second valve and the 4th three-way pipe
Enter compressor after crossing the 3rd three-way pipe, second throttling device, check valve, the first three-way pipe and cross valve to complete a defrosting and follow
Ring.So in heating operation state, cold-producing medium flow to first end i.e. from top inflow bottom from the second end of outdoor heat exchanger；And
Flow to the second end in Defrost operation state cold-producing medium from the first end of outdoor heat exchanger, that is, from bottom inflow top it is achieved that from
Defrosted successively to top in the bottom of outdoor heat exchanger, the current that defrosting is formed can be directly from the row of air-conditioner outdoor unit bottom
Water hole is flowed out, without being attached to the bottom of outdoor heat exchanger, thus improve defrosting effect, it is to avoid defrosting bad asking
Topic；Further, because in Defrost operation state, cold-producing medium, without indoor heat exchanger, therefore also reduces cold-producing medium
Heat waste and crushing, improve heating effect, reduce power consumption.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable
Other accompanying drawings are obtained according to these accompanying drawings.
A kind of structure and working principle figure of common air-conditioning device that Fig. 1 provides for prior art；
Fig. 2 is a kind of structural representation of air-conditioner outdoor unit provided in an embodiment of the present invention；
Fig. 3 is a kind of air conditioner structure provided in an embodiment of the present invention and air-conditioning heating and defrosting principle schematic；
Fig. 4 is the defrosting control device structural representation of air-conditioner outdoor unit provided in an embodiment of the present invention；
Fig. 5 is a kind of air conditioner outdoor machine defrosting control method flow chart provided in an embodiment of the present invention.
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 description is it is clear that described embodiment is only a part of embodiment of the present 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 not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
In prior art, with reference to shown in Fig. 1, it is that outdoor heat exchanger is defrosted, cross valve 15 commutates, reversely refrigeration fortune
Row, so that outdoor heat exchanger high temperature, removes frost layer；During defrosting, outdoor heat exchanger flow scheme design is upper entering and lower leaving, that is, remove
When frost runs, flow direction in outdoor heat exchanger for the cold-producing medium is upper entering and lower leaving, and the outlet of usual outdoor heat exchanger is located at lower end, system
During reaching outdoor heat exchanger 11 outlet, the temperature of cold-producing medium is continuous reduction to cryogen, therefore outdoor heat exchange during defrosting
Device 11 top i.e. upper end defrost speed fast compared with bottom i.e. lower end so that top defrosting produce water in high humility low temperature
Under the conditions of can not flow out from bottom osculum as soon as possible and lead to its regelation to cover on the frost layer of bottom, cause air-conditioning outdoor
Machine defrosting is bad.
In embodiment of the present invention specific embodiment scheme, with the first end of outdoor heat exchanger as bottom, with outdoor heat exchange
Second end of device illustrates for top, provides a kind of air-conditioner, such as Fig. 2 for solving the above-mentioned technical problem embodiment of the present invention
Shown, including：Air-conditioner outdoor unit 1, defrosting control device 25 and indoor heat exchanger 23, wherein indoor heat exchanger 23 are used for air conditioning chamber
Interior machine.
With reference to shown in Fig. 2, air-conditioner outdoor unit 1 provided in an embodiment of the present invention includes：Cross valve 21, outdoor heat exchanger 24 and
Compressor 22；The first port of cross valve 21 connects the outlet of compressor 22, and the second port of cross valve 21 connects indoor heat exchange
The first end of device 23；The first end of the second end connection outdoor heat exchanger 24 of indoor heat exchanger 23, the second of outdoor heat exchanger 24
End connects the 3rd port of cross valve 21, and the 4th port of cross valve 21 connects the entrance of compressor 22；The 21 the 3rd of cross valve
Port connects the first end of outdoor heat exchanger 24 by first passage, and first passage is provided with the second valve 28；Cross valve
Second port by second channel connect outdoor heat exchanger 24 the second end, second channel is provided with check valve 26, unidirectional
Valve 26 is used for controlling second channel from the second end of outdoor heat exchanger 24 towards the second port one-way conduction of cross valve 21；Four-way
It is additionally provided with the first valve 27 between 3rd port of valve 21 and the second end of outdoor heat exchanger 24；The second of indoor heat exchanger 23
It is additionally provided with the 3rd valve 29 between end and the first end of outdoor heat exchanger 24.
With reference to as shown in figure 4, the embodiment of the present invention provides a kind of defrosting control device 25 of air-conditioner outdoor unit, this device bag
Include：First control unit 251, in air-conditioning heating running status, controlling the first valve and the 3rd valve opening；Control the
Two valve closings；Second control unit 252, in air-conditioner defrosting running status, controlling the second valve opening；Control first
Valve and the 3rd valve closing.
Wherein, the first control unit 251 and the second control unit 252 can defrost and individually set up in control device 25
Processor is realized it is also possible to be integrated in some processor of defrosting control device 25, in addition it is also possible to program code
Form be stored in defrosting control device 25 memory in, by defrosting control device 25 some processor call and execute with
Upper first control unit 251 and the function of the second control unit 252.Processor described here can be a central processing unit
(Central Processing Unit, CPU), or specific integrated circuit (Application Specific
Integrated Circuit, ASIC), or be arranged to implement one or more integrated circuits of the embodiment of the present invention.
In such scheme, by adding three valves, a throttling arrangement and one unidirectional in existing air-conditioner outdoor unit
Valve simultaneously passes through to control respective state, forms two different loops in Defrost operation state and heating operation state respectively,
When running defrosting state, control the second valve closing and control the first valve and the 3rd valve opening, form heating operation shape
Loop during state, high-temperature high-pressure refrigerant, successively can be by cross valve, the first three-way pipe and the first cut-off after compressor discharge
Valve gets in heat exchanger and completes heat release, and then the cold-producing medium of low temperature sequentially passes through the second stop valve, the 3rd valve, first throttle
Enter outdoor heat exchanger heat absorption after device and the 4th three-way pipe, then sequentially pass through the 3rd three-way pipe, the first valve, the second three-way pipe
Return to compressor with after cross valve, complete one and heat circulation；In Defrost operation state, control the second valve opening and control
First valve and the 3rd valve closing, form loop during heating operation state, and high-temperature high-pressure refrigerant is discharged from compressor
Afterwards, enter heat release from outdoor heat exchanger first end after passing sequentially through cross valve, the second three-way pipe, the second valve and the 4th three-way pipe
Defrosting, rear low-temperature refrigerant passes sequentially through the 3rd three-way pipe, second throttling device, check valve, the first three-way pipe and cross valve again
Enter compressor afterwards and complete a defrosting circulation.So in heating operation state, cold-producing medium is from the second end stream of outdoor heat exchanger
To first end i.e. from top inflow bottom；And it flow to second in Defrost operation state cold-producing medium from the first end of outdoor heat exchanger
End, that is, from bottom inflow top it is achieved that being defrosted successively to top from the bottom of outdoor heat exchanger, the current that defrosting is formed
Can flow out directly from the osculum of air-conditioner outdoor unit bottom, without being attached to the bottom of outdoor heat exchanger, thus improve
Defrosting effect, it is to avoid defrosting bad problem；Further, because in Defrost operation state, cold-producing medium is without interior
Heat exchanger, therefore also reduces heat waste and the crushing of cold-producing medium, improves heating effect, reduce power consumption.
Concrete scheme is, with reference to as Fig. 3, in air conditioner outdoor unit structure provided in an embodiment of the present invention, the of cross valve 21
Two-port netwerk connects the first end of the first three-way pipe 35, and the second end of the first three-way pipe 35 connects the first end of indoor heat exchanger 23,
Second end of the three-terminal link second channel of the first three-way pipe 35；In addition, the 3rd port of cross valve 21 connects the second threeway
The first end of pipe 34, the second end of the second three-way pipe 34 connects the first end of the first valve 27, the 3rd end of the second three-way pipe 34
Connect the first end of first passage；And the second end of the first valve 34 connects the first end of the 3rd three-way pipe 33, the 3rd three-way pipe
33 the second end connects the second end of outdoor heat exchanger 24, the first end of the three-terminal link second channel of the 3rd three-way pipe 33；
Second end of first passage connects the first end of the 4th three-way pipe 32, and the second end of the 4th three-way pipe 32 connects outdoor heat exchanger 24
First end, the first end of the 4th three-way pipe 32 three-terminal link to the 3rd valve 29, the second end junction chamber of the 3rd valve 29
Second end of interior heat exchanger 23.
In addition, with reference to shown in Fig. 3, the second end of the first three-way pipe 35 in this air conditioner outdoor unit structure is passed through first and is ended
Valve 36 intercepts the first end of indoor heat exchanger 23.The 3rd valve 29 in this air conditioner outdoor unit structure is by the second cut-off 37 valve even
Connect the second end of indoor heat exchanger.First throttle device is passed through at 3rd end of the 4th three-way pipe 32 in this air conditioner outdoor unit structure
The first end of 31 connection the 3rd valves 29.Set between the first end of the second channel in this air conditioner outdoor unit structure and check valve 26
It is equipped with second throttling device 30.
Exemplary, the first throttle device 31 employed in above-mentioned air-conditioner outdoor unit and second throttling device 30 permissible
From choke valve or capillary, for throttling/hypotensive effect is played to cold-producing medium used in air-conditioner outdoor unit, its concrete form
It is not particularly limited herein.It should be noted that stop valve does not do control loop use herein, but needing system is carried out
Safeguard or air-conditioner is out of order to assist when needing repairing and uses.The first valve employed in this air conditioner outdoor unit structure,
Second valve and the 3rd valve can be magnetic valves, play on-off action.
With reference to as shown in figure 5, the embodiment of the present invention provides a kind of defrosting control method of air-conditioner outdoor unit, the method is used for
Above-mentioned air-conditioner outdoor unit is controlled, including following control flow：
501st, during heating operation state, the first valve and the 3rd valve opening are controlled；Control the second valve closing.
Specifically, as shown in solid arrow in Fig. 3, when air-conditioning heating runs, the first valve 27 and the 3rd valve are controlled
29 unlatchings, control the second valve 28 to close so that the first valve 27 and the 3rd valve 29 place channel conductive；When HTHP system
Cryogen, after compressor 22 discharge, can be got in by cross valve 21, the first conducting device 35 and the first stop valve 36 successively
Heat exchanger 23 completes heat release, and then the cold-producing medium of low temperature sequentially passes through the second stop valve 37, the 3rd valve 29, first throttle device
31 and the 4th enter outdoor heat exchanger 24 after three-way pipe 32 absorbs heat, then sequentially passes through the 3rd three-way pipe 33, the first valve 27, second
Return to compressor 22 after three-way pipe 34 and cross valve 21, complete one and heat circulation.
502nd, Defrost operation, controls the second valve opening；Control the first valve and the 3rd valve closing.
Specifically, with reference to as shown in dotted arrow in Fig. 3, when air-conditioner defrosting runs, the second valve 28 is controlled to open, first
Valve 27 and the 3rd valve 29 close the first passage conducting so that the second valve 28 place；When high-temperature high-pressure refrigerant is from pressure
After discharging in contracting machine 22, change from outdoor after passing sequentially through cross valve 21, the second three-way pipe 34, the second valve 28 and the 4th three-way pipe
Hot device 24 bottom enters heat release defrosting, and rear low-temperature refrigerant passes sequentially through the 3rd three-way pipe 33, second throttling device 30, unidirectional again
Enter compressor 22 after valve 26, the first three-way pipe 35 and cross valve 21 and complete a defrosting circulation.
Due to adding three valves, a throttling arrangement and a check valve in existing air-conditioner outdoor unit in such scheme
And by controlling respective state, form two different loops in Defrost operation state and heating operation state respectively,
When running defrosting state, control the second valve closing and control the first valve and the 3rd valve opening, form heating operation state
When loop, high-temperature high-pressure refrigerant, successively can be by cross valve, the first three-way pipe and the first stop valve after compressor discharge
Get in heat exchanger and complete heat release, then the cold-producing medium of low temperature sequentially passes through the second stop valve, the 3rd valve, first throttle dress
Put with the 4th three-way pipe after enter outdoor heat exchanger heat absorption, then sequentially pass through the 3rd three-way pipe, the first valve, the second three-way pipe and
Return to compressor after cross valve, complete one and heat circulation；In Defrost operation state, control the second valve opening and control the
One valve and the 3rd valve closing, form loop during heating operation state, after high-temperature high-pressure refrigerant is discharged from compressor,
Enter heat release from outdoor heat exchanger first end after passing sequentially through cross valve, the second three-way pipe, the second valve and the 4th three-way pipe to remove
Frost, after rear low-temperature refrigerant passes sequentially through the 3rd three-way pipe, second throttling device, check valve, the first three-way pipe and cross valve again
Enter compressor and complete a defrosting circulation.So in heating operation state, cold-producing medium flow to from the second end of outdoor heat exchanger
First end is i.e. from top inflow bottom；And it flow to the second end in Defrost operation state cold-producing medium from the first end of outdoor heat exchanger,
I.e. from bottom inflow top it is achieved that being defrosted successively to top from the bottom of outdoor heat exchanger, the current that defrosting is formed can
Flowed out with the osculum directly from air-conditioner outdoor unit bottom, without being attached to the bottom of outdoor heat exchanger, thus improve removing
White effect, it is to avoid defrosting bad problem；Further, because in Defrost operation state, cold-producing medium changes without interior
Hot device, therefore also reduces heat waste and the crushing of cold-producing medium, improves heating effect, reduce power consumption.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, all should contain
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be defined by described scope of the claims.
Claims (10)
1. a kind of air-conditioner outdoor unit, including cross valve, outdoor heat exchanger and compressor；It is characterized in that, the of described cross valve
Single port connects the outlet of described compressor, and the second port of described cross valve connects the first end of indoor heat exchanger；Described room
Second end of interior heat exchanger connects the first end of described outdoor heat exchanger, and the second end of described outdoor heat exchanger connects described four-way
3rd port of valve, the 4th port of described cross valve connects the entrance of described compressor；
3rd port of described cross valve connects the first end of described outdoor heat exchanger by first passage, described first passage
On be provided with the second valve；
The second port of described cross valve connects the second end of described outdoor heat exchanger by second channel, on described second channel
It is provided with check valve, described check valve is used for controlling described second channel from the second end of described outdoor heat exchanger towards described four
The second port one-way conduction of port valve；
It is additionally provided with the first valve between 3rd port of described cross valve and the second end of described outdoor heat exchanger；Described interior
It is additionally provided with the 3rd valve between second end of heat exchanger and the first end of described outdoor heat exchanger.
2. air-conditioner outdoor unit according to claim 1 it is characterised in that
The second port of described cross valve connects the first end of the first three-way pipe, and the second end connection of described first three-way pipe is described
The first end of indoor heat exchanger, the second end of the second channel described in three-terminal link of described first three-way pipe；
3rd port of described cross valve connects the first end of the second three-way pipe, and the second end connection of described second three-way pipe is described
The first end of the first valve, the first end of the first passage described in three-terminal link of described second three-way pipe；
Second end of described first valve connects the first end of the 3rd three-way pipe；Second end of described 3rd three-way pipe connects described
Second end of outdoor heat exchanger, the first end of the second channel described in three-terminal link of described 3rd three-way pipe；
Second end of described first passage connects the first end of the 4th three-way pipe, and the second end connection of described 4th three-way pipe is described
The first end of outdoor heat exchanger, the first end of three-terminal link extremely described 3rd valve of described 4th three-way pipe, the described 3rd
Second end of valve connects the second end of described indoor heat exchanger.
3. air-conditioner outdoor unit according to claim 2 is it is characterised in that the second end of described first three-way pipe passes through first
Stop valve connects the first end of described indoor heat exchanger.
4. air-conditioner outdoor unit according to claim 2 is it is characterised in that the second end of described 3rd valve passes through second section
Only valve connects the second end of described indoor heat exchanger.
5. air-conditioner outdoor unit according to claim 2 is it is characterised in that the 3rd end of described 4th three-way pipe passes through first
Throttling arrangement connects the first end of described 3rd valve.
6. air-conditioner outdoor unit according to claim 2 is it is characterised in that the first end of described second channel is unidirectional with described
It is provided with second throttling device between valve.
7. air-conditioner outdoor unit according to claim 2 is it is characterised in that described first valve, the second valve and the 3rd valve
Door is magnetic valve.
8. the air-conditioner outdoor unit described in a kind of any one of claim 1-7 defrosting control method it is characterised in that
In heating operation state, control the first valve and the 3rd valve opening；Control the second valve closing；
In Defrost operation state, control the second valve opening；Control the first valve and the 3rd valve closing.
9. the air-conditioner outdoor unit described in a kind of any one of claim 1-7 defrosting control device it is characterised in that
Including：First control unit, in heating operation state, controlling the first valve and the 3rd valve opening, controls second
Valve closing；
Second control unit, in Defrost operation state, controlling the second valve opening, controls the first valve and the 3rd valve to close
Close.
10. a kind of air-conditioner is it is characterised in that including the air-conditioner outdoor unit as described in any one of claim 1-7 and such as weighing
Profit requires the defrosting control device of the air-conditioner outdoor unit described in 9.
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| CN201610808763.8A CN106440098A (en) | 2016-09-07 | 2016-09-07 | Air-conditioner outdoor unit, defrosting control method and device of air-conditioner outdoor unit and air conditioner |
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| CN201610808763.8A CN106440098A (en) | 2016-09-07 | 2016-09-07 | Air-conditioner outdoor unit, defrosting control method and device of air-conditioner outdoor unit and air conditioner |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500664A (en) * | 2019-08-14 | 2019-11-26 | 海信（山东）空调有限公司 | A kind of air-conditioner outdoor unit, air-conditioning and its control method and device |
| CN112577164A (en) * | 2019-09-27 | 2021-03-30 | 广东美的制冷设备有限公司 | Control method and device of air conditioner, air conditioner and electronic equipment |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11230646A (en) * | 1998-02-17 | 1999-08-27 | Denso Corp | Engine driven heat pump |
| JP2008116156A (en) * | 2006-11-07 | 2008-05-22 | Matsushita Electric Ind Co Ltd | Air conditioner |
| CN101430153A (en) * | 2008-12-12 | 2009-05-13 | 广东志高空调有限公司 | Defrosting method for thermal pump air conditioner and air conditioner |
| CN101871675A (en) * | 2009-04-24 | 2010-10-27 | 日立空调·家用电器株式会社 | Air conditioner |
| CN202229488U (en) * | 2011-09-06 | 2012-05-23 | 海信（山东）空调有限公司 | Air-conditioner and double-loop working fluid circulating system thereof |
| CN103047727A (en) * | 2013-01-23 | 2013-04-17 | 三花控股集团有限公司 | Heat pump system |
| CN103307801A (en) * | 2012-03-06 | 2013-09-18 | 俞绍明 | Heat pump system |
| CN104832989A (en) * | 2015-04-29 | 2015-08-12 | 广东美的制冷设备有限公司 | Air conditioner and control method for air conditioner |
-
2016
- 2016-09-07 CN CN201610808763.8A patent/CN106440098A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11230646A (en) * | 1998-02-17 | 1999-08-27 | Denso Corp | Engine driven heat pump |
| JP2008116156A (en) * | 2006-11-07 | 2008-05-22 | Matsushita Electric Ind Co Ltd | Air conditioner |
| CN101430153A (en) * | 2008-12-12 | 2009-05-13 | 广东志高空调有限公司 | Defrosting method for thermal pump air conditioner and air conditioner |
| CN101871675A (en) * | 2009-04-24 | 2010-10-27 | 日立空调·家用电器株式会社 | Air conditioner |
| JP2010255921A (en) * | 2009-04-24 | 2010-11-11 | Hitachi Appliances Inc | Air conditioner |
| CN202229488U (en) * | 2011-09-06 | 2012-05-23 | 海信（山东）空调有限公司 | Air-conditioner and double-loop working fluid circulating system thereof |
| CN103307801A (en) * | 2012-03-06 | 2013-09-18 | 俞绍明 | Heat pump system |
| CN103047727A (en) * | 2013-01-23 | 2013-04-17 | 三花控股集团有限公司 | Heat pump system |
| CN104832989A (en) * | 2015-04-29 | 2015-08-12 | 广东美的制冷设备有限公司 | Air conditioner and control method for air conditioner |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500664A (en) * | 2019-08-14 | 2019-11-26 | 海信（山东）空调有限公司 | A kind of air-conditioner outdoor unit, air-conditioning and its control method and device |
| CN110500664B (en) * | 2019-08-14 | 2021-02-23 | 海信（山东）空调有限公司 | Air conditioner outdoor unit, air conditioner and control method and device of air conditioner |
| CN112577164A (en) * | 2019-09-27 | 2021-03-30 | 广东美的制冷设备有限公司 | Control method and device of air conditioner, air conditioner and electronic equipment |
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Address after: 266100 Zhuzhou Road, Laoshan District, Qingdao, Shandong Province, No. 151 Applicant after: Hisense (Shandong) Air-conditioning Co., Ltd. Address before: 266736 Hisense Road 1, South Village Town, Pingdu City, Qingdao, Shandong Applicant before: Hisense (Shandong) Air-conditioning Co., Ltd. |
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Application publication date: 20170222 |
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