CN106524399A - Air conditioner defrosting device, air conditioner defrosting control method and system and air conditioner - Google Patents
Air conditioner defrosting device, air conditioner defrosting control method and system and air conditioner Download PDFInfo
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- CN106524399A CN106524399A CN201610931239.XA CN201610931239A CN106524399A CN 106524399 A CN106524399 A CN 106524399A CN 201610931239 A CN201610931239 A CN 201610931239A CN 106524399 A CN106524399 A CN 106524399A
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- Prior art keywords
- outdoor heat
- heat exchanger
- defrost
- electronic valve
- heats
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Classifications
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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
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- 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
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/37—Capillary tubes
-
- 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
-
- 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
-
- 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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention particularly relates to an air conditioner defrosting device, an air conditioner defrosting control method and a system and an air conditioner. Multiple parallel outdoor heat exchangers are provided; one or more outdoor heat exchangers can be selected for heating according to application environments of the air conditioner and user demands; when the outdoor heat exchangers need to defrost, the outdoor heat exchangers are defrosted by a hot air bypassing mode, and the other outdoor heat exchangers without needing defrosting are adopted to continuously heat, so that the indoor continuous heating in the defrosting process is realized, and the indoor comfort is prominently improved; and meanwhile, low-temperature gas after defrosting cooling in a bypass pipeline dose not directly enter a gas return port of a compressor, but enters a refrigerant circulating loop after being throttled by an electronic throttling part, so that the great change of the intake/exhaust pressure of the compressor cannot be caused, and the operation reliability of the compressor is improved.
Description
Technical field
The present invention relates to airconditioning control field, more particularly to a kind of air-conditioning defrosting device, air-conditioning defrosting control method, system
And air-conditioning.
Background technology
The Defrost mode that major part air-conditioner is adopted at present is all cross valve commutation defrosting, during defrost, due to four-way
Valve commutates, and indoor fan is out-of-blast, causes indoor temperature to decline, and reduces indoor comfort degree.And traditional hot gas bypass defrosting
Technology is then directly to bypass a part of high temperature and high pressure steam to be defrosted into outdoor heat exchanger, is directly entered compressor afterwards and returns
Gas port, can cause the large change of compressor Suck and exhaust pressure, and reliability is poor, while indoor user impression can be reduced.How
Avoid frosting or how do not affected under conditions of defrosting as far as possible indoor heat supply be solve problem key.
The content of the invention
The invention provides a kind of air-conditioning defrosting device, air-conditioning defrosting control method, system and air-conditioning, solve existing skill
Art can cause indoor temperature to decline when being defrosted, and reduce the technical problem of indoor comfort degree.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：
According to one aspect of the present invention, there is provided a kind of air-conditioning defrosting device, including the compressor, four-way that are sequentially connected
Valve, indoor heat exchanger, electronic throttle part and outdoor heat exchanger unit, the outdoor heat exchanger unit include that at least two is in parallel
Outdoor heat exchanger；
The gas outlet of each outdoor heat exchanger connects the exhaust of compressor by the first bypass line being correspondingly arranged
Mouthful, the inlet of each outdoor heat exchanger is connected to indoor heat exchanger and electronics by the second bypass line being correspondingly arranged
Between throttle part, on each described first bypass line, the first defrost electronic valve is equipped with, each described second bypass pipe
The second defrost electronic valve is equipped with road.
The invention has the beneficial effects as follows：Technical scheme is provided with the outdoor heat exchanger of multiple parallel connections, can be with root
Select one or more outdoor heat exchanger to be heated according to the applied environment and user's request of air-conditioning, defrost is needed when existing
During outdoor heat exchanger, carry out defrost by the way of hot-gas bypass to which, and using other without the need for defrost outdoor heat exchanger after
It is continuous to heat, so as to indoor continuously interruption heats during realizing defrost, significantly improve indoor comfort；Simultaneously in bypass line
Cryogenic gas after defrost cooling is not directed into compressor return air mouth, but refrigeration is entered Jing after electronic throttle part throttle
Agent closed circuit, therefore the large change of compressor Suck and exhaust pressure will not be caused, improve compressor operating reliability.
Further, the parallel connected end after all of first bypass line parallel connection is connected to compression by the 3rd defrost electronic valve
The exhaust outlet of machine.
Using the beneficial effect of above-mentioned further scheme it is：Further technical scheme is by arranging the 3rd defrost electronic valve
Door, when no outdoor heat exchanger needs defrost, directly closes the 3rd defrost electronic valve and can close each outdoor heat exchanger
Corresponding first bypass line, simplifies control process, improves control speed and efficiency.
Further, first is respectively equipped with the gas outlet of the outdoor heat exchanger and inlet heat electronic valve and second
Electronic valve is heated, described first bypass line one end is connected to the exhaust outlet of compressor by the 3rd defrost electronic valve, separately
One end is connected to outdoor heat exchanger gas outlet and first and heats between electronic valve；Described second bypass line one end is connected to room
External heat exchanger inlet and second is heated between electronic valve, between other end connection indoor heat exchanger and electronic throttle part.
Further, the electronic throttle part is capillary, electric expansion valve or heating power expansion valve.
Using the beneficial effect of above-mentioned further scheme it is：Capillary or electric expansion valve or heating power expansion valve have
Good throttling action, wherein, the degree of supercooling control that the aperture of electric expansion valve and heating power expansion valve can be as needed, and capillary
The low production cost of pipe, assembling are simple and convenient.
Air-conditioning defrost dress according to another aspect of the present invention, there is provided a kind of air-conditioning defrosting control system including described
Put, also including controller, the controller needs to change outside the target room of defrost in being used to obtain all outdoor heat exchangers in parallel
The information of hot device, controls the target outdoor heat exchanger and stops heating, and unlatching is heated without the need for the outdoor heat exchanger of defrost
Or keep being to heat state without the need for the outdoor heat exchanger of defrost, while using by the target outdoor heat exchanger corresponding first
Siphunculus road and the second bypass line carry out defrost to the target outdoor heat exchanger.
The invention has the beneficial effects as follows：The present invention is provided with the outdoor heat exchanger of multiple parallel connections, can answering according to air-conditioning
One or more outdoor heat exchanger is selected to be heated with environment and user's request, when presence needs the outdoor heat exchanger of defrost
When, defrost is carried out by the way of hot-gas bypass to which, and continues to heat without the need for the outdoor heat exchanger of defrost using other, so as to
During realizing defrost, indoor continuously interruption heats, and significantly improves indoor comfort.
Further, when all outdoor heat exchangers of the outdoor heat exchanger unit are required to defrost, the controller is also
For controlling at least one outdoor heat exchanger to heat state.
Using the beneficial effect of above-mentioned further scheme it is：This further technical scheme can ensure that to be not in all of
The situation of outdoor heat exchanger defrost simultaneously, further ensures the heating effect of interior, improves indoor comfort.
Further, the outdoor heat exchanger unit includes the first outdoor heat exchanger and the second outdoor heat exchanger, the control
When implement body is heated for start, control the first outdoor heat exchanger corresponding first heats electronic valve and second and heats electronic valve
Door is opened, and other electronic valves are turned off；
Or when judging that the first outdoor heat exchanger reaches default defrost condition, close the first outdoor heat exchanger corresponding the
One heats electronic valve and second heats electronic valve, while opening the 3rd defrost electronic valve, the first outdoor heat exchanger correspondence
The first defrost electronic valve and the second defrost electronic valve and the second outdoor heat exchanger corresponding first heat electronic valve
Electronic valve is heated with second, so that the first outdoor heat exchanger defrost, and the second outdoor heat exchanger is heated；
Or after the completion of the first outdoor heat exchanger defrost, close the 3rd defrost electronic valve, the first outdoor heat exchanger pair
The the first defrost electronic valve answered and the second defrost electronic valve；
Or when judging that the second outdoor heat exchanger reaches default defrost condition, close the second outdoor heat exchanger corresponding the
One heats electronic valve and second heats electronic valve, while opening the 3rd defrost electronic valve, the second outdoor heat exchanger correspondence
The first defrost electronic valve and the second defrost electronic valve and the first outdoor heat exchanger corresponding first heat electronic valve
Electronic valve is heated with second, so that the first outdoor heat exchanger and the second outdoor heat exchanger replace defrost.
Using the beneficial effect of above-mentioned further scheme it is：This further technical scheme is for adopting one under normal circumstances
Outdoor heat exchanger can meet the reality of heating needs, increased an outdoor heat exchanger, carried out using two outdoor heat exchangers
Defrost is used alternatingly and is replaced, indoor continuously interruption has both been capable of achieving and has been heated, significantly improved indoor comfort, energy can be saved again
Consumption, it is to avoid waste.
In order to solve the technical problem of the present invention, a kind of air-conditioning defrosting control method is additionally provided, is comprised the following steps：
Step 1, needs the information of the target outdoor heat exchanger of defrost in obtaining all outdoor heat exchangers in parallel；
Step 2, controls the target outdoor heat exchanger and stops heating, and open the outdoor heat exchanger system without the need for defrost
Heat keeps being to heat state without the need for the outdoor heat exchanger of defrost, while using corresponding first bypass of target outdoor heat exchanger
Pipeline and the second bypass line carry out defrost to the target outdoor heat exchanger.
Further, when all outdoor heat exchangers of the outdoor heat exchanger unit are required to defrost, control at least one
Outdoor heat exchanger is to heat state.
Further, it is when the outdoor heat exchanger unit includes the first outdoor heat exchanger and the second outdoor heat exchanger, described
Step 1 is specially：
When start is heated, control the first outdoor heat exchanger corresponding first heats electronic valve and second and heats electronic valve
Open, other electronic valves are turned off, so that the first outdoor heat exchanger is heated；
Judge whether first outdoor heat exchanger reaches default defrost condition, if so, then execution step 2；If it is not, then protecting
The state for holding all electronic valves is constant.
Further, the step 2 is specially：
S201, when the first outdoor heat exchanger reaches default defrost condition, closes the first outdoor heat exchanger corresponding first
Heat electronic valve and second and heat electronic valve, while it is corresponding to open the 3rd defrost electronic valve, the first outdoor heat exchanger
First defrost electronic valve and the second defrost electronic valve and the second outdoor heat exchanger corresponding first heat electronic valve and
Second heats electronic valve, so that the first outdoor heat exchanger carries out defrost, until the first outdoor heat exchanger defrost is completed, performs
S202；
S202, closes the 3rd defrost electronic valve, the corresponding first defrost electronic valve of the first outdoor heat exchanger and second
Defrost electronic valve, so that the first outdoor heat exchanger stops defrost, and performs S203；
S203, when the second outdoor heat exchanger reaches default defrost condition, closes the second outdoor heat exchanger corresponding first
Heat electronic valve and second and heat electronic valve, while it is corresponding to open the 3rd defrost electronic valve, the second outdoor heat exchanger
First defrost electronic valve and the second defrost electronic valve and the first outdoor heat exchanger corresponding first heat electronic valve and
Second heats electronic valve, so that the second outdoor heat exchanger defrost, and the first outdoor heat exchanger is heated, until described second outdoor
After the completion of heat exchanger defrosting, close the 3rd defrost electronic valve, the corresponding first defrost electronic valve of the second outdoor heat exchanger and
Second defrost electronic valve, so that the second outdoor heat exchanger stops defrost；
S204, repeat step S201～S203, so that the first outdoor heat exchanger and the second outdoor heat exchanger replace defrost.
In order to solve the technical problem of the present invention, a kind of air-conditioning, including described air-conditioning defrosting control system are additionally provided.
Description of the drawings
Structural representations of the Fig. 1 for a kind of 1 air-conditioning defrosting device of embodiment；
Structural representations of the Fig. 2 for a kind of 2 air-conditioning defrosting control system of embodiment；
Schematic flow sheets of the Fig. 3 for a kind of 3 air-conditioning defrosting control method of embodiment；
Structural representations of the Fig. 4 for a kind of 4 air-conditioning of embodiment.
Specific embodiment
The principle and feature of the present invention are described below in conjunction with accompanying drawing, example is served only for explaining the present invention, and
It is non-for limiting the scope of the present invention.
Air-conditioning defrosting device of the accompanying drawing respectively to the present invention, air-conditioning defrosting control system are combined below by way of specific embodiment
System, air-conditioning defrosting control method and air-conditioning are described in detail.
As shown in figure 1, for a kind of structural representation of 1 air-conditioning defrosting device of embodiment, in the present embodiment, the outdoor is changed
Hot device unit 5 includes two outdoor heat exchangers, i.e. the first outdoor heat exchanger 13 and the second outdoor heat exchanger 14, the first outdoor heat exchange
The correspondence of the first outdoor heat exchanger 13 first is respectively equipped with the gas outlet of device 13 and inlet and heats magnetic valve 11 and second
Heat magnetic valve 12；Second outdoor heat exchanger is respectively equipped with the gas outlet of second outdoor heat exchanger 14 and inlet
14 correspondences first heat magnetic valve 11 and second and heat magnetic valve 12；In the present embodiment, the electronic throttle part 6 is that electronics is swollen
Swollen valve, in other embodiments, the electronic throttle part 4 can also be capillary or heating power expansion valve.
In the present embodiment, the gas outlet of first outdoor heat exchanger 13 is bypassed by the first of the first outdoor heat exchanger 13
Pipeline 6 connects the exhaust outlet of compressor 1, the inlet of first outdoor heat exchanger 13 by the first outdoor heat exchanger 13 the
Two bypass lines 7 are connected between indoor heat exchanger 3 and electronic throttle part 4, first outdoor heat exchanger 13 first by
Siphunculus road 6 is provided with 13 corresponding first defrost electronic valve 8 of the first outdoor heat exchanger, and the of first outdoor heat exchanger 13
Two bypass lines 7 are provided with 13 corresponding second defrost electronic valve 9 of the first outdoor heat exchanger.
First bypass line 6 connection pressure of the gas outlet of second outdoor heat exchanger 14 by the second outdoor heat exchanger 14
The exhaust outlet of contracting machine 1, the inlet of second outdoor heat exchanger 14 pass through the second bypass line 7 of the second outdoor heat exchanger 14
It is connected between indoor heat exchanger 3 and electronic throttle part 4, sets on the first bypass line 6 of second outdoor heat exchanger 14
There are 14 corresponding first defrost electronic valve 8 of the second outdoor heat exchanger, the second bypass line 7 of second outdoor heat exchanger 14
It is provided with 14 corresponding second defrost electronic valve 9 of the second outdoor heat exchanger.In the present embodiment, the first outdoor heat exchanger 13 and
Parallel connected end after the first bypass line parallel connection of two outdoor heat exchangers 14 is connected to compressor 3 by the 3rd defrost electronic valve 10
Exhaust outlet.In other embodiments, the outdoor heat exchanger unit 5 can also include plural outdoor heat exchanger, its
Method of attachment is simply changed with reference to the connected mode of the present embodiment.
As shown in Fig. 2 for a kind of structural representation of 2 defrosting control system of embodiment, including the air-conditioning defrost of embodiment 1
Device, i.e., including the first outdoor heat exchanger 13 and the second outdoor heat exchanger 14, also including controller, control described in the present embodiment
When implement body is heated for start, the first outdoor heat exchanger 13 corresponding first of control heats electronic valve 11 and second and heats electricity
Sub- valve 12 is opened, and other electronic valves are turned off, and is now heated using the first outdoor heat exchanger 13, and detailed process is：
Cross valve commutates, and the high temperature and high pressure gas that 1 exhaust outlet of compressor is discharged get in heat exchanger 3, heat exchange cooling by cross valve 2
Liquid afterwards carries out heat absorption evaporation into the first outdoor heat exchanger 13 Jing after the decompression of electronic throttle part 4, afterwards into compressor
1, re-compress into next circulation.Under rugged environment, with the carrying out for heating, the fin of the first outdoor heat exchanger 13
On can tie the thick frost layer of thick layer, cause heating capacity drastically to decline, it is therefore desirable to detect whether the first outdoor heat exchanger 13 needs
Want defrost.Be present various defrost Rule of judgment in prior art, such as judged according to the temperature of outdoor heat exchanger coil pipe, when
When one outdoor heat exchanger 13 meets default defrost condition, need to carry out defrost to the first outdoor heat exchanger 13.First is closed now
Outdoor heat exchanger 13 corresponding first heats electronic valve 11 and second and heats electronic valve 12, and opens the second outdoor heat exchanger
14 corresponding first heat electronic valve 11 and second heats electronic valve 12, the liquid Jing after indoor heat exchanger 3 exchanges heat cooling
Jing electronic throttles part 4 carries out heat absorption evaporation into the second outdoor heat exchanger 14, so that the second outdoor heat exchanger 14 starts to heat.
The 3rd defrost electronic valve 10,13 corresponding first defrost electronic valve 8 of the first outdoor heat exchanger and the second defrost are opened simultaneously
Electronic valve 9,13 corresponding first bypass line 6 of a part of the first outdoor heat exchangers of high-temperature exhaust air Jing of compressor 1 enter
One outdoor heat exchanger 13 carries out defrost, from the first outdoor heat exchanger 13 out afterwards in the second defrost electronic valve 9 with Jing rooms
The cold-producing medium out of heat exchanger 3 converge after together Jing electronic throttles part 4 throttle, then via the second outdoor heat exchanger 14 heat absorption steam
Compressor 1 is returned to after sending out and completes circulation, to realize 13 defrost of the first outdoor heat exchanger, the second outdoor heat exchanger 14 is heated.
After the completion of 13 defrost of the first outdoor heat exchanger, the 3rd defrost electronic valve 10, the first outdoor heat exchange are closed in control
13 corresponding first defrost electronic valve 8 of device and the second defrost electronic valve 9, no longer carry out hot gas to the first outdoor heat exchanger 13
Bypass defrosting.When judging that the second outdoor heat exchanger 14 reaches default defrost condition, the second outdoor heat exchanger 14 is closed corresponding
First heats electronic valve 11 and second heats electronic valve 12, while open the first outdoor heat exchanger 13 corresponding first heating
Electronic valve 11 and second heats electronic valve 12, makes the first outdoor heat exchanger 13 enter heating mode.Meanwhile, open the 3rd and change
White electronic valve 10,14 corresponding first defrost electronic valve 8 of the second outdoor heat exchanger and the second defrost electronic valve 9, compression
14 corresponding first bypass line 6 of a part of the second outdoor heat exchangers of high-temperature exhaust air Jing of machine enters into the second outdoor heat exchanger 14
Row defrost, from the second outdoor heat exchanger 14 out afterwards through corresponding second defrost electronic valve 9 with Jing indoor heat exchangers 3 out
Cold-producing medium converge after together Jing electronic throttles part 4 throttle, then via the first outdoor heat exchanger 13 heat absorption evaporation after return to pressure
Contracting machine 1 completes circulation, and to realize 14 defrost of the second outdoor heat exchanger, the first outdoor heat exchanger 13 is heated.In the present embodiment, if
Detect the second outdoor heat exchanger 14 and reach default defrost condition, and the first outdoor heat exchanger 13 is when having not been completed defrost, control
Make the second outdoor heat exchanger 14 to continue to heat, it is after the first outdoor heat exchanger 13 completes defrost and entrance heats state then right
Second outdoor heat exchanger 14 carries out defrost.According to this kind of defrosting control mode, you can replace defrost using two outdoor heat exchangers,
Heat so as to realize continuously not interrupting, improve indoor comfort.
In other preferred embodiments, if the first outdoor heat exchanger 13 and the second outdoor heat exchanger 14 are according to user's request
Simultaneously in when heating state, controller is used for according to default defrost condition, respectively to the first outdoor heat exchanger 13 and second Room
Whether external heat exchanger 14 needs defrost to be detected, when the first outdoor heat exchanger 13 needs defrost and 14 nothing of the second outdoor heat exchanger
When needing defrost, control the first outdoor heat exchanger 13 stops heating, and keep the second outdoor heat exchanger 14 heats state, while utilizing
First outdoor heat exchanger, 13 corresponding first bypass line 6 and the second bypass line 7, and using hot gas bypassing method to described the
One outdoor heat exchanger 13 carries out defrost, until the defrost process of the first outdoor heat exchanger 13 terminates.Then according to user instruction control
System opens the current state that the first outdoor heat exchanger 13 heated or kept the first outdoor heat exchanger 13, changes only with the second outdoor
Hot device 14 is heated.Then, when the second outdoor heat exchanger 14 reaches default defrost condition needs defrost, control the first outdoor heat exchange
Device 13 is to heat state, and utilizes 14 corresponding first bypass line 6 of the second outdoor heat exchanger and the second bypass line 7, and adopts
Defrost is carried out to second outdoor heat exchanger 14 with hot gas bypassing method, until the defrost process of the second outdoor heat exchanger 14 is tied
Beam.So it is circulated, makes the first outdoor heat exchanger 13 and the second outdoor heat exchanger 14 replace defrost, and at least one outdoor is changed
Hot device is being heated, it is ensured that the heating effect in room.
In other preferred embodiments, the outdoor heat exchanger that two or more can also be adopted in parallel, now, controller is used for
The target outdoor heat exchanger information of defrost is needed in obtaining all outdoor heat exchangers in parallel, and controls the target outdoor heat exchange
Device stops heating, and it is to heat that unlatching is heated without the need for the outdoor heat exchanger of defrost or kept without the need for the outdoor heat exchanger of defrost
State；Corresponding first bypass line of target outdoor heat exchanger and the second bypass line are adopted simultaneously, and utilize hot-gas bypass side
Method carries out defrost to the target outdoor heat exchanger.Such as in a preferred embodiment, carried out using three outdoor heat exchangers
Parallel connection, in three in parallel outdoor heat exchangers, at least one to heat state, such as two outdoor heat exchangers heat simultaneously or
Three outdoor heat exchangers are heated simultaneously.Whether controller needs defrost to judge each outdoor heat exchanger in parallel, if only
There is an outdoor heat exchanger to need defrost, then defrost is carried out to which by the way of hot-gas bypass, keep other outdoor heat exchanges
In device, at least one is to heat state；If there is two outdoor heat exchangers to need to carry out defrost, by the way of hot-gas bypass pair
Two outdoor heat exchangers carry out defrost simultaneously, and another outdoor heat exchanger is heated, or first one of outdoor is changed
Hot device carries out hot-gas bypass defrost, two other outdoor heat exchanger is heated, after the completion for the treatment of defrost, then the defrost to needing
Other outdoor heat exchangers carry out defrost, i.e., defrost in turn is carried out by the way of one by one；If there is three outdoor heat exchangers to need
Defrost to be carried out, i.e., all of outdoor heat exchanger are required to defrost, then controller controls at least one outdoor heat exchanger to heat
State, remaining outdoor heat exchanger carry out defrost, when have outdoor heat exchanger defrost to complete and enter heat state after, then control other
The outdoor heat exchanger of defrost is needed to carry out defrost, it is to avoid whole outdoor heat exchangers occur all in defrost, no outdoor heat exchanger system
The situation of heat, further improves the comfort level of user.
As described in Figure 3, be a kind of 3 air-conditioning defrosting control method of embodiment schematic flow sheet, comprise the following steps：
Step 1, needs the information of the target outdoor heat exchanger of defrost in obtaining all outdoor heat exchangers in parallel；
Step 2, controls the target outdoor heat exchanger and stops heating, and open the outdoor heat exchanger system without the need for defrost
Heat keeps being to heat state without the need for the outdoor heat exchanger of defrost；Simultaneously using corresponding first bypass of target outdoor heat exchanger
Pipeline and the second bypass line, and defrost is carried out to the target outdoor heat exchanger using hot gas bypassing method.
In a preferred embodiment, the outdoor heat exchanger unit 5 includes that the first outdoor heat exchanger 13 and second is outdoor
During heat exchanger 14, defrost is replaced by the first outdoor heat exchanger 13 and the second outdoor heat exchanger 14 and alternating is heated, not only can
Ensure defrost effect and indoor heating effect, it is also possible to which energy-saving, specifically, the step 1 is specially：
When start is heated, the first outdoor heat exchanger 13 corresponding first of control heats electronic valve 11 and second and heats electronics
Valve 12 is opened, and other electronic valves are turned off, so that the first outdoor heat exchanger 13 is heated；
Judge whether first outdoor heat exchanger 13 reaches default defrost condition, if so, then first outdoor heat exchange
13 target outdoor heat exchangers of device, execution step 2；If it is not, then keeping the state of all electronic valves constant.
The step 2 is specially：
S201, when the first outdoor heat exchanger 13 reaches default defrost condition, closes the first outdoor heat exchanger 13 corresponding
First heats electronic valve 11 and second heats electronic valve 12, while open the 3rd defrost electronic valve 10, the first outdoor changing
13 corresponding first defrost electronic valve 8 of hot device and the second defrost electronic valve 9 and the second outdoor heat exchanger 14 corresponding
One heats electronic valve 11 and second heats electronic valve 12, so that the first outdoor heat exchanger 13 carries out defrost, the second outdoor is changed
Hot device 14 is heated, and until 13 defrost of the first outdoor heat exchanger is completed, performs S202；
S202, closes the 3rd defrost electronic valve 10,13 corresponding first defrost electronic valve, 8 and of the first outdoor heat exchanger
Second defrost electronic valve 9, so that the first outdoor heat exchanger 13 stops defrost, and performs S203；
S203, when the second outdoor heat exchanger 14 reaches default defrost condition, closes the second outdoor heat exchanger 14 corresponding
First heats electronic valve 11 and second heats electronic valve 12, while open the 3rd defrost electronic valve 10, the second outdoor changing
14 corresponding first defrost electronic valve 8 of hot device and the second defrost electronic valve 9 and the first outdoor heat exchanger 13 corresponding
One heats electronic valve 11 and second heats electronic valve 12, so that 14 defrost of the second outdoor heat exchanger, and the first outdoor heat exchange
Device 13 is heated, and after the completion of 14 defrost of the second outdoor heat exchanger, is closed the 3rd defrost electronic valve 10, the second outdoor and is changed
14 corresponding first defrost electronic valve 8 of hot device and the second defrost electronic valve 9, so that 14 stoppingization of the second outdoor heat exchanger
Frost；
S204, repeat step S201～S203, so that 14 alternatingization of the first outdoor heat exchanger 13 and the second outdoor heat exchanger
Frost.In the preferred embodiment, if detecting the second outdoor heat exchanger 14 reaches default defrost condition, and the first outdoor heat exchanger
13 when having not been completed defrost, and the second outdoor heat exchanger 14 of control continues to heat, until the first outdoor heat exchanger 13 completes defrost
And into after heating state, then defrost is carried out to the second outdoor heat exchanger 14.According to this kind of defrosting control mode, you can adopt two
Individual outdoor heat exchanger replaces defrost, heats so as to realize continuously not interrupting, improves indoor comfort.
In another preferred embodiment, first outdoor heat exchanger 13 and the second outdoor heat exchanger 14 are according to user's request
Simultaneously in when heating state, the air-conditioning defrosting control method is specially：
According to default defrost condition, whether defrost is needed to the first outdoor heat exchanger 13 and the second outdoor heat exchanger 14 respectively
Detected, when the first outdoor heat exchanger 13 need defrost and the second outdoor heat exchanger 14 without the need for defrost when, control first is outdoor
Heat exchanger 13 stops heating, and keep the second outdoor heat exchanger 14 heats state, while utilizing 13 correspondence of the first outdoor heat exchanger
The first bypass line 6 and the second bypass line 7, and first outdoor heat exchanger 13 is changed using hot gas bypassing method
Frost, until the defrost process of the first outdoor heat exchanger 13 terminates；
The current shape that first outdoor heat exchanger 13 heated or kept the first outdoor heat exchanger 13 is opened according to user instruction
State, heats only with the second outdoor heat exchanger 14；
When the second outdoor heat exchanger 14 reaches default defrost condition needs defrost, the first outdoor heat exchanger of control 13 is system
Warm status, and 14 corresponding first bypass line 6 of the second outdoor heat exchanger and the second bypass line 7 are utilized, and using by hot gas
Circulation method carries out defrost to second outdoor heat exchanger 14, until the defrost process of the second outdoor heat exchanger 14 terminates.So
It is circulated, makes the first outdoor heat exchanger 13 and the second outdoor heat exchanger 14 replace defrost, and at least one outdoor heat exchanger exists
Heated, it is ensured that the heating effect in room.
In an additional preferred embodiment, parallel connection, three outdoor heat exchangers in parallel are carried out using three outdoor heat exchangers
In at least one to heat state, such as two outdoor heat exchangers are heated simultaneously or three outdoor heat exchangers are while heat, institute
State air-conditioning defrosting control method to be specially：
Defrost whether is needed to judge each outdoor heat exchanger in parallel, if only one of which outdoor heat exchanger needs
Frost, then carry out defrost by the way of hot-gas bypass to which, and in the other outdoor heat exchangers of holding, at least one is to heat state；
It is if there is two outdoor heat exchangers to need to carry out defrost, same to two outdoor heat exchangers by the way of hot-gas bypass
Shi Jinhang defrosts, another outdoor heat exchanger are heated, or first carry out hot-gas bypass to one of outdoor heat exchanger
Defrost, two other outdoor heat exchanger are heated, and after the completion for the treatment of defrost, then other outdoor heat exchangers of the defrost to needing enter
Row defrost, i.e., carry out defrost in turn by the way of one by one；
If there is three outdoor heat exchangers to need to carry out defrost, i.e., all of outdoor heat exchanger is required to defrost, then control to
To heat state, remaining outdoor heat exchanger carries out defrost to a few outdoor heat exchanger, completes to go forward side by side when there is outdoor heat exchanger defrost
Entering after heating state, then control other outdoor heat exchangers for needing defrost carries out defrost, it is to avoid whole outdoor heat exchangers occur all
In defrost, there is no the situation that outdoor heat exchanger is heated, further improve the comfort level of user.
As described in Figure 4, be embodiment 4 air conditioning structure diagram, the air-conditioning includes above-described air-conditioning defrost control
System processed.
Technical scheme is provided with the outdoor heat exchanger of multiple parallel connections, can be according to the applied environment of air-conditioning and use
Family demand selects one or more outdoor heat exchanger to be heated, when presence needs the outdoor heat exchanger of defrost, using heat
The mode of gas bypass carries out defrost to which, and continues to heat without the need for the outdoor heat exchanger of defrost using other, so as to realize defrost
During indoor continuously interruption heat, significantly improve indoor comfort；Low temperature gas after defrost is cooled down in bypass line simultaneously
Body is not directed into compressor return air mouth, but refrigerant circulation loop is entered Jing after electronic throttle part throttle, therefore not
The large change of compressor Suck and exhaust pressure can be caused, compressor operating reliability is improve.
In describing the invention, it is to be understood that term " first ", " second " are only used for describing purpose, and can not
It is interpreted as indicating or implying relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " the
One ", at least one this feature can be expressed or be implicitly included to the feature of " second ".In describing the invention, " multiple "
It is meant that at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
Example ", or the description of " some examples " etc. mean specific features with reference to the embodiment or example description, structure, material or spy
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be with office
Combined in one or more embodiments or example in an appropriate manner.Additionally, in the case of not conflicting, the skill of this area
The feature of the different embodiments or example described in this specification and different embodiments or example can be tied by art personnel
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (12)
1. a kind of air-conditioning defrosting device, it is characterised in that including the compressor (1), cross valve (2) being sequentially connected, indoor heat exchange
The outdoor heat exchanger of device (3), electronic throttle part (4) and at least two parallel connections；
The gas outlet of each outdoor heat exchanger connects the row of compressor (1) by the first bypass line (6) being correspondingly arranged
Gas port, the inlet of each outdoor heat exchanger are connected to indoor heat exchanger by the second bypass line (7) being correspondingly arranged
(3) and electronic throttle part (4) between, on each described first bypass line (6), the first defrost electronic valve (8) is equipped with,
The second defrost electronic valve (9) is equipped with each described second bypass line (7).
2. air-conditioning defrosting device according to claim 1, it is characterised in that after all of first bypass line (6) parallel connection
Parallel connected end the exhaust outlet of compressor (1) is connected to by the 3rd defrost electronic valve (10).
3. air-conditioning defrosting device according to claim 2, it is characterised in that at the gas outlet of each outdoor heat exchanger
It is provided with first and heats electronic valve (11), second is provided with the inlet of each outdoor heat exchanger and heats electronic valve
(12), described first bypass line (6) one end is connected to the exhaust outlet of compressor (1) by the 3rd defrost electronic valve (10),
The other end is connected to outdoor heat exchanger gas outlet and first and heats between electronic valve (11)；Second bypass line (7) one
End is connected to outdoor heat exchanger inlet and second and heats between electronic valve (12), other end connection indoor heat exchanger (3) and
Between electronic throttle part (4).
4. according to the arbitrary described air-conditioning defrosting device of claims 1 to 3, it is characterised in that the electronic throttle part (4) is
Capillary, electric expansion valve or heating power expansion valve.
5. a kind of air-conditioning defrosting control system, it is characterised in that including the arbitrary described air-conditioning defrosting device of Claims 1 to 4,
Also include controller, the controller is used to obtain in all outdoor heat exchangers in parallel according to default defrost condition needs defrost
Target outdoor heat exchanger information, control the target outdoor heat exchanger and stop heating, and the outdoor opened without the need for defrost is changed
It is to heat state that hot device is heated or kept without the need for the outdoor heat exchanger of defrost, while utilizing the target outdoor heat exchanger
Corresponding first bypass line (6) and the second bypass line (7), and using hot gas bypassing method to the target outdoor heat exchanger
Carry out defrost.
6. air-conditioning defrosting control system according to claim 5, it is characterised in that when all outdoor heat exchangers in parallel it is equal
When needing defrost, the controller is additionally operable to control at least one outdoor heat exchanger to heat state.
7. the air-conditioning defrosting control system according to claim 5 or 6, it is characterised in that：The air-conditioning defrosting device includes
First outdoor heat exchanger (13) and the second outdoor heat exchanger (14), when the controller is heated specifically for start, control first
Outdoor heat exchanger (13) corresponding first heats electronic valve (11) and second and heats electronic valve (12) unlatching, other electronic valves
Door is turned off；
Or when judging that the first outdoor heat exchanger (13) reaches default defrost condition, close the first outdoor heat exchanger (13) correspondence
First heat electronic valve (11) and second and heat electronic valve (12), while open the 3rd defrost electronic valve (10), the
The corresponding first defrost electronic valve (8) of one outdoor heat exchanger (13) and the second defrost electronic valve (9) and the second outdoor are changed
Hot device (14) corresponding first heats electronic valve (11) and second and heats electronic valve (12), so that the first outdoor heat exchanger
(13) defrost, and the second outdoor heat exchanger (14) heats；
Or after the completion of the first outdoor heat exchanger (13) defrost, close the 3rd defrost electronic valve (10), the first outdoor heat exchange
The corresponding first defrost electronic valve (8) of device (13) and the second defrost electronic valve (9)；
Or when judging that the second outdoor heat exchanger (14) reaches default defrost condition, close the second outdoor heat exchanger (14) correspondence
First heat electronic valve (11) and second and heat electronic valve (12), while open the 3rd defrost electronic valve (10), the
The corresponding first defrost electronic valve (8) of two outdoor heat exchangers (14) and the second defrost electronic valve (9) and the first outdoor are changed
Hot device (13) corresponding first heats electronic valve (11) and second and heats electronic valve (12), so that the first outdoor heat exchanger
(13) and the second outdoor heat exchanger (14) alternately defrost.
8. a kind of air-conditioning defrosting control method, is applied to the arbitrary described air-conditioning defrosting control system of claim 5～7, and which is special
Levy and be, comprise the following steps：
Step 1, according to default defrost condition, needs the target outdoor heat exchanger of defrost in obtaining all outdoor heat exchangers in parallel
Information；
Step 2, controls the target outdoor heat exchanger and stops heating, and the outdoor heat exchanger opened without the need for defrost heated or
Person keeps being to heat state without the need for the outdoor heat exchanger of defrost, while using corresponding first bypass of the target outdoor heat exchanger
Pipeline and the second bypass line, and defrost is carried out to the target outdoor heat exchanger using hot gas bypassing method.
9. air-conditioning defrosting control method according to claim 8, it is characterised in that when all outdoor heat exchangers in parallel it is equal
When needing defrost, at least one outdoor heat exchanger is controlled to heat state.
10. air-conditioning defrosting control method according to claim 8 or claim 9, it is characterised in that outdoor heat exchanger in parallel includes
First outdoor heat exchanger and the second outdoor heat exchanger, the step 1 are specially：
Start is when heating, and control the first outdoor heat exchanger corresponding first heats electronic valve and second and heats electronic valve and open
Open, other electronic valves are turned off, so that the first outdoor heat exchanger is heated；
Judge whether first outdoor heat exchanger reaches default defrost condition, if so, then first outdoor heat exchanger is mesh
Mark outdoor heat exchanger, execution step 2；If it is not, then keeping the state of all electronic valves constant.
11. air-conditioning defrosting control methods according to claim 10, it is characterised in that the step 2 is specially：
S201, closing the first outdoor heat exchanger corresponding first heat electronic valve and second and heat electronic valve, while opening
The corresponding first defrost electronic valve of 3rd defrost electronic valve, the first outdoor heat exchanger and the second defrost electronic valve and
Two outdoor heat exchangers corresponding first heat electronic valve and second and heat electronic valve, so that the first outdoor heat exchanger
Frost, the second outdoor heat exchanger are heated, and until the first outdoor heat exchanger defrost is completed, perform S202；
S202, closes the 3rd defrost electronic valve, the corresponding first defrost electronic valve of the first outdoor heat exchanger and the second defrost
Electronic valve, so that the first outdoor heat exchanger stops defrost, and performs S203；
S203, when the second outdoor heat exchanger reaches default defrost condition, closes the second outdoor heat exchanger corresponding first and heats
Electronic valve and second heats electronic valve, while opening the 3rd defrost electronic valve, the second outdoor heat exchanger corresponding first
Defrost electronic valve and the second defrost electronic valve and the first outdoor heat exchanger corresponding first heat electronic valve and second
Electronic valve is heated, so that the second outdoor heat exchanger defrost, and the first outdoor heat exchanger is heated, until second outdoor heat exchange
After the completion of device defrost, the 3rd defrost electronic valve, the corresponding first defrost electronic valve of the second outdoor heat exchanger and second are closed
Defrost electronic valve, so that the second outdoor heat exchanger stops defrost；
S204, repeat step S201～S203, so that the first outdoor heat exchanger and the second outdoor heat exchanger replace defrost.
12. a kind of air-conditionings, it is characterised in that including the arbitrary described air-conditioning defrosting control system of claim 5～7.
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| CN201610931239.XA CN106524399A (en) | 2016-10-31 | 2016-10-31 | Air conditioner defrosting device, air conditioner defrosting control method and system and air conditioner |
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|---|---|---|---|
| CN201610931239.XA CN106524399A (en) | 2016-10-31 | 2016-10-31 | Air conditioner defrosting device, air conditioner defrosting control method and system and air conditioner |
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| CN107238222A (en) * | 2017-05-17 | 2017-10-10 | 青岛海尔空调器有限总公司 | Air-conditioning system and its control method |
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| CN108731306A (en) * | 2018-06-11 | 2018-11-02 | 桂林电子科技大学 | A kind of air source heat pump system and control method being adapted to cold district weather |
| CN108826583A (en) * | 2018-05-30 | 2018-11-16 | 珠海格力电器股份有限公司 | The defrosting control method and device of air-conditioning system |
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| CN114370692A (en) * | 2022-02-28 | 2022-04-19 | 海信（广东）空调有限公司 | Air conditioner and control method thereof |
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Application publication date: 20170322 |