CN105423589B - Air conditioner and its control method - Google Patents
Air conditioner and its control method Download PDFInfo
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- CN105423589B CN105423589B CN201510817950.8A CN201510817950A CN105423589B CN 105423589 B CN105423589 B CN 105423589B CN 201510817950 A CN201510817950 A CN 201510817950A CN 105423589 B CN105423589 B CN 105423589B
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- heat exchanger
- bypass branch
- flow path
- air conditioner
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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
- 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
- F24F1/14—Heat exchangers specially adapted for separate outdoor units
- F24F1/16—Arrangement or mounting thereof
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- 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
-
- 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
- F24F11/65—Electronic processing for selecting an operating mode
-
- 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
- F25B2313/021—Indoor unit or outdoor unit with auxiliary heat exchanger not forming part of the indoor or outdoor unit
- F25B2313/0211—Indoor unit or outdoor unit with auxiliary heat exchanger not forming part of the indoor or outdoor unit the auxiliary heat exchanger being only used during defrosting
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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
-
- 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
- F25B2500/00—Problems to be solved
Abstract
The invention discloses a kind of air conditioner and its control methods, in the heating coolant loop of air conditioner, flow path between restricting element and outdoor heat exchanger is first flow path, flow path between outdoor heat exchanger and compressor is second flow path, air conditioner further includes that regenerative apparatus by the compressor and first bypass branch in parallel with first flow path and second bypass branch in parallel with second flow path, the first bypass branch and the second bypass branch flow through regenerative apparatus.In defrosting, regenerative apparatus heats the first bypass branch, to which the refrigerant flowed through via the first bypass branch is converted to high-temperature low-pressure gaseous state, the gaseous refrigerant of high-temperature low-pressure heat release and is converted to low-temp low-pressure liquid refrigerant in outdoor heat exchanger, and the heat of releasing defrosts to outdoor heat exchanger.Since during being defrosted, four-way valve does not need to commutate, therefore indoor heat exchanger still is able to carry out normal heat release, so that room temperature will not be decreased obviously in air conditioner defrosting.
Description
Technical field
The present invention relates to air-conditioning technical field more particularly to a kind of air conditioner and its control methods.
Background technique
Air conditioner is easy the frosting on outdoor heat exchanger in heating operations, with the increase of frosting degree, can gradually decrease
The heating capacity of air conditioner, therefore must defrost to outdoor heat exchanger in air conditioner operational process.
In the prior art, generally four-way valve commutate by way of defrost, that is, when being defrosted, air conditioner by
Heating cyclic switching is refrigeration cycle, and indoor heat exchanger is switched to evaporator by condenser, and to indoor heat release be switched to from
The state of indoor heat absorption.Drawback of the prior art is that when being defrosted, since indoor heat exchanger is from interior heat absorption,
It is easy to cause room temperature to be decreased obviously, affects comfort of the user using air-conditioning heating when.
Summary of the invention
The main purpose of the present invention is to provide a kind of air conditioner and its control methods, it is intended to solve air conditioner and defrost
When the technical issues of be easy to causeing room temperature to be decreased obviously.
To achieve the goals above, the present invention provides a kind of air conditioner, and the air conditioner includes compressor, four-way valve, room
Interior heat exchanger, restricting element and outdoor heat exchanger connect the heating coolant loop to be formed, in the heating coolant loop, the section
Flow path between fluid element and the outdoor heat exchanger is first flow path, between the outdoor heat exchanger and the compressor and
It is second flow path by the flow path of the outdoor heat exchanger to the compressor direction, the air conditioner further includes being located at the compression
Regenerative apparatus by machine, for absorbing the heat that the compressor case distributes, and in parallel with the first flow path first
Bypass branch and second bypass branch in parallel with the second flow path, the first flow path, second flow path, the first bypass branch
With solenoid valve is equipped on the second bypass branch, first bypass branch and the second bypass branch flow through the regenerative apparatus,
And the regenerative apparatus heats first bypass branch and the second bypass branch.
Preferably, the outdoor heat exchanger includes at least two sub- heat exchangers, wherein a sub- heat exchanger is windward side
Heat exchanger, another sub- heat exchanger are leeward side heat exchanger, and the number of the quantity of the first flow path and the sub- heat exchanger
Measure identical, the outlet end of each first flow path is connect with the arrival end of the wherein one sub- heat exchanger respectively, each described
The outlet end of sub- heat exchanger is connected with that four-way valve.
Preferably, the quantity of first bypass branch is identical as the quantity of the sub- heat exchanger, by the of each described first
The outlet end of logical branch is connect with the arrival end of the wherein one sub- heat exchanger respectively.
Preferably, the second flow path includes the sub- second flow path between the four-way valve and the compressor, institute
It is in parallel with the sub- second flow path to state the second bypass branch.
In addition, to achieve the goals above, the present invention also provides a kind of air conditioner, the air conditioner includes compressor, four
Port valve, indoor heat exchanger, restricting element and outdoor heat exchanger connect the heating coolant loop to be formed, the heating coolant loop
In, the flow path between the restricting element and the outdoor heat exchanger is first flow path, and the air conditioner further includes positioned at described
Regenerative apparatus by compressor, for absorbing the heat that the compressor case distributes, and it is in parallel with the first flow path
Solenoid valve is equipped on first bypass branch, the first flow path and the first bypass branch, first bypass branch flows through institute
Regenerative apparatus is stated, and the regenerative apparatus heats first bypass branch；The outdoor heat exchanger includes at least two sons
Heat exchanger, wherein a sub- heat exchanger is windward side heat exchanger, another sub- heat exchanger is leeward side heat exchanger, and described
The quantity of first flow path is identical as the quantity of the sub- heat exchanger, the outlet end of each first flow path respectively with wherein one institute
The arrival end connection of sub- heat exchanger is stated, the outlet end of each sub- heat exchanger is connected with that four-way valve.
Preferably, the quantity of first bypass branch is identical as the quantity of the sub- heat exchanger, by the of each described first
The outlet end of logical branch is connect with the arrival end of the wherein one sub- heat exchanger respectively.
In addition, to achieve the goals above, the present invention also provides a kind of control method of air conditioner, the control of the air conditioner
Method processed includes:
When entering defrosting mode, the controller controls the cut-off of the solenoid valve in the first flow path and second flow path,
And control the solenoid valve conduction on first bypass branch and the second bypass branch.
In addition, to achieve the goals above, the present invention also provides a kind of control method of air conditioner, the control of the air conditioner
Method processed includes:
When entering defrosting mode, the solenoid valve in first flow path described in the controller control section ends, and controls
Solenoid valve conduction in remaining described first flow path.
Preferably, the control method of the air conditioner further include: when entering defrosting mode, controller control with it is each
The solenoid valve conduction on the first bypass branch that a sub- heat exchanger of cut-off is correspondingly connected with, and control and each conducting
Solenoid valve cut-off on the first bypass branch that heat exchanger is correspondingly connected with.
Preferably, the control method of the air conditioner further include: when entering defrosting mode, described in the controller control
Indoor hot-swappable fans are in low wind or halted state, and the control outdoor heat exchange fan is in low wind or halted state.
Air conditioner proposed by the present invention and its control method, by the way that first bypass branch in parallel with first flow path is arranged,
And the regenerative apparatus for absorbing the heat that compressor case distributes is set by compressor, and the first bypass branch flows through accumulation of heat
Device, regenerative apparatus can heat the first bypass branch, and first flow path and the first bypass branch are equipped with solenoid valve, are defrosting
When, the solenoid valve on the first bypass branch is opened, and when flowing through the first bypass branch by the refrigerant that restricting element flows out, passes through storage
Thermal heats the refrigerant flowed through in the first bypass branch, thus the refrigerant that will be flowed through via the first bypass branch
High-temperature low-pressure gaseous state is converted to by low-temp low-pressure liquid, then flows into outdoor heat exchanger, the gaseous refrigerant of high-temperature low-pressure is in room
Heat release and low-temp low-pressure liquid refrigerant is converted in external heat exchanger, the heat of releasing defrosts to outdoor heat exchanger.Due to
During being defrosted, four-way valve does not need to commutate, therefore indoor heat exchanger still is able to carry out normal heat release, thus
Room temperature will not be decreased obviously when air conditioner defrosts.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the air condition of that present invention first embodiment；
Fig. 2 is the structural schematic diagram of the air condition of that present invention second embodiment；
Fig. 3 is the structural schematic diagram of the 5th embodiment of the air condition of that present invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
With reference to the accompanying drawing and specific embodiment is described further with regard to technical solution of the present invention.It should be appreciated that this
Locate described specific embodiment to be only used to explain the present invention, be not intended to limit the present invention.
The present invention proposes a kind of air conditioner.Referring to Fig.1, Fig. 1 is the structural schematic diagram of the air condition of that present invention first embodiment,
The air conditioner includes that compressor 101, four-way valve 102, indoor heat exchanger 103, restricting element 104 and outdoor heat exchanger 105 connect
Connect the heating coolant loop to be formed, in the heating coolant loop, the restricting element 104 and the outdoor heat exchanger 105 it
Between flow path be first flow path 106, between the outdoor heat exchanger 105 and the compressor 101 and by the outdoor heat exchanger
105 flow path to 101 direction of compressor is second flow path 107, and the air conditioner further includes being located at the compressor 101
The other, regenerative apparatus 108 for absorbing the heat that 101 shell of compressor distributes, and it is in parallel with the first flow path 106
The first bypass branch 109 and second bypass branch 110 in parallel with the second flow path 107, the first flow path 106,
Solenoid valve, first bypass branch 109 are equipped on two flow paths 107, the first bypass branch 109 and the second bypass branch 110
The regenerative apparatus 108 is flowed through with the second bypass branch 110, and the regenerative apparatus 108 is to 109 He of the first bypass branch
The heating of second bypass branch 110.
It should be noted that arrival end and outlet end as described below are determined with the refrigerant flow direction for heating coolant loop
Justice.It is understood that the arrival end in heating coolant loop is the outlet end in refrigeration refrigerant circuit, it is cold heating
Outlet end in matchmaker circuit is the arrival end in refrigeration refrigerant circuit.
In the present embodiment, as shown in Figure 1, four-way valve 102 includes tetra- interfaces of a, b, c and d.The outlet of compressor 101
Mouth is connect with a interface of four-way valve 102, and the b interface of four-way valve 102 is connect with the arrival end of indoor heat exchanger 103, indoor heat exchange
The outlet end of device 103 is connect with the arrival end of restricting element 104, and restricting element 104 can be electric expansion valve.Restricting element
104 outlet end is connect with the arrival end of the arrival end of first flow path 106 and the first bypass branch 109 respectively, first flow path 106
Outlet end connect with the arrival end of outdoor heat exchanger 105, the outlet end of the first bypass branch 109 and outdoor heat exchanger 105
Arrival end connection.The outlet end of outdoor heat exchanger 105 is connect with the d interface of four-way valve 102, the c interface of four-way valve 102 respectively with
The connection of the arrival end of the arrival end of second flow path 107 and the second bypass branch 110.Air conditioner further includes gas-liquid separator.Second
The outlet end of flow path 107 and the outlet end of the second bypass branch 110 are connect with the arrival end of gas-liquid separator respectively, gas-liquid separation
The outlet end of device is connect with the arrival end of compressor 101.Above-mentioned each solenoid valve can be controlled by the controller on air conditioner
Be switched off and on.
Solenoid valve when air conditioner is in normal heating mode, on the first bypass branch 109 and the second bypass branch 110
It is in off state, to heat refrigerant in coolant loop without the first bypass branch 109 and the second bypass branch
110.And the solenoid valve in first flow path 106 and second flow path 107 is both turned on.Refrigerant flows successively through compressor 101, four-way valve
102 a-b interface, indoor heat exchanger 103, restricting element 104, first flow path 106, outdoor heat exchanger 105, four-way valve 102
D-c interface, second flow path 107, gas-liquid separator finally flow into compressor 101 and constitute a heating circulation.
When air conditioner is in defrosting mode, the solenoid valve on the first bypass branch 109 and the second bypass branch 110 is located
In on state, so that the refrigerant heated in coolant loop flows through the first bypass branch 109 and the second bypass branch 110.And the
Solenoid valve on two flow paths 107 is in off state, so that the refrigerant heated in coolant loop is not passed through second flow path 107.It can
Choosing, the quantity of first flow path 106 can be one, and the solenoid valve in first flow path 106 is in off state at this time, to make
Refrigerant in hot coolant loop is not passed through first flow path 106.Optionally, the quantity of first flow path 106 can also be at least two,
The solenoid valve at least in a first flow path 106 is in off state at this time, so that the refrigerant heated in coolant loop is not passed through this
First flow path 106 in off state.It is illustrated for a first flow path 106 is set in the present embodiment.Refrigerant according to
It is secondary flow through compressor 101, the a-b interface of four-way valve 102, indoor heat exchanger 103, restricting element 104, the first bypass branch 109,
Outdoor heat exchanger 105, the d-c interface of four-way valve 102, the second bypass branch 110, gas-liquid separator finally flow into compressor 101
Constitute the circulation under a defrosting mode.
Above-mentioned regenerative apparatus 108 may include a shell and be filled in the intracorporal heat-storing material of shell, and heat-storing material can be
High molecular material based on polyethylene glycol.Above-mentioned regenerative apparatus 108 can also include electric heating assembly, in compressor 101
The heat distributed, then can be by electric heating assembly to the first bypass branch 109 and second it is impossible to meet when regenerative apparatus 108
Bypass branch 110 is heated.Regenerative apparatus 108 can be configured according to actual needs relative to the position of compressor 101,
For example, 101 side of compressor can be set to, and fit in the setting of compressor 101；Or it is surrounded on the periphery of compressor 101 and sets
It sets.
Above-mentioned first bypass branch 109 and the second bypass branch 110 can be partially placed in regenerative apparatus 108.It can be with
Two regenerative apparatus 108 are set, and 108 part of regenerative apparatus accommodates the first bypass branch 109, another regenerative apparatus 108
Partial volume sets the second bypass branch 110.One regenerative apparatus 108, the first bypass branch 109 and the second bypass branch can also be only set
Road 110 is partially placed in the regenerative apparatus 108.
The defrosting principle of air conditioner is as follows, and when being defrosted, high temperature and high pressure gaseous refrigerant, warp is discharged in compressor 101
It crosses after the a-b interface of four-way valve 102 and fully enters after indoor heat exchanger 103 exchanged heat, come out from indoor heat exchanger 103
For cryogenic high pressure liquid refrigerant, low-temp low-pressure liquid refrigerant is converted to after restricting element 104.By first
Logical branch 109, regenerative apparatus 108 heat the first bypass branch 109, will flow through the low-temp low-pressure in the first bypass branch 109
Liquid refrigerant is converted to high-temperature low-pressure gaseous refrigerant.Then outdoor heat exchanger 105 is flowed into, high-temperature low-pressure gaseous refrigerant exists
Heat release is carried out in outdoor heat exchanger 105, to defrost to outdoor heat exchanger 105.It is via the outflow of outdoor heat exchanger 105
Low-temp low-pressure liquid refrigerant, then flows into the second bypass branch 110, and regenerative apparatus 108 adds the second bypass branch 110
The low-temp low-pressure liquid refrigerant flowed through in the second bypass branch 110 is converted high-temperature low-pressure gaseous refrigerant by heat.Then it flows
Enter gas-liquid separator, is high-temperature low-pressure gaseous refrigerant via gas-liquid separator outflow, finally flows back into compressor 101.
Energy of the air conditioner under heating mode and defrosting mode is analyzed separately below:
In a heating mode, the energy source of air conditioner is empty from environment from the acting of compressor 101 and outdoor heat exchanger 105
It absorbs heat in gas, the energy that compressor 101 does work largely is transferred to out of, exhaust outlet is gone out refrigerant, and energy is set as Q11, separately
A part is transferred in regenerative apparatus 108 by 101 shell of compressor, and energy is set as Q21；Outdoor heat exchanger 105 is from extraneous ring
The heat absorbed in the air of border is set as Q31.The energy dissipation of air conditioner is mainly energy of the indoor heat exchanger 103 by radiation loss
Measure Q41.According to law of conservation of energy, it can be deduced that formula (1): Q11+Q21+Q31=Q41.
In defrost mode, the energy source of air conditioner is empty from environment from the acting of compressor 101 and outdoor heat exchanger 105
It absorbs heat in gas, the energy that compressor 101 does work largely is transferred to out of, exhaust outlet is gone out refrigerant, and energy Q12 is another
Part is transferred in regenerative apparatus 108 by 101 shell of compressor, and energy is set as Q22；Outdoor heat exchanger 105 is from external environment
The heat absorbed in air is set as Q32.The energy dissipation of air conditioner is mainly the energy Q42 of 103 radiation loss of indoor heat exchanger
With the energy Q5 of 105 radiation loss of outdoor heat exchanger.According to law of conservation of energy, it can be deduced that formula (2): Q12+Q22=Q42+
Q5。
Formula (2) is compared with formula (1), Q41=Q42, Q11+Q21+Q31=Q12+Q22-Q5, so Q12+Q22 > Q11+
Q21.Illustrate that the power of compressor 101 will not decay, defrosting process smoothly and can be carried out uninterruptedly, and defrosting efficiency is higher.
Air conditioner proposed by the present invention by the way that first bypass branch 109 in parallel with first flow path 106 is arranged, and is being pressed
Regenerative apparatus 108 for absorbing the heat that 101 shell of compressor distributes is set by contracting machine 101, and the first bypass branch 109 flows
Through regenerative apparatus 108, regenerative apparatus 108 can heat the first bypass branch 109, and first flow path 106 and the first bypass branch
109 are equipped with solenoid valve, and in defrosting, the solenoid valve on the first bypass branch 109 is opened, the system flowed out by restricting element 104
When cryogen flows through the first bypass branch 109, the refrigerant flowed through in the first bypass branch 109 is carried out by regenerative apparatus 108
Heating, so that the refrigerant flowed through via the first bypass branch 109 is converted to high-temperature low-pressure gaseous state by low-temp low-pressure liquid, so
Outdoor heat exchanger 105 is flowed into afterwards, and the gaseous refrigerant of high-temperature low-pressure heat release and is converted to low-temp low-pressure in outdoor heat exchanger 105
The heat of liquid refrigerant, releasing defrosts to outdoor heat exchanger 105.Due to during being defrosted, four-way valve 102
Do not need to commutate, therefore indoor heat exchanger 103 still is able to carry out normal heat release, thus air conditioner defrosting when room temperature not
It can be decreased obviously.
Further, based on the first embodiment of the air condition of that present invention, the invention also provides the second implementations of air conditioner
Example, is the structural schematic diagram of the air condition of that present invention second embodiment referring to Fig. 2, Fig. 2, and the outdoor heat exchanger 105 includes at least
Two sub- heat exchangers 1051, wherein a sub- heat exchanger 1051 is windward side heat exchanger, another sub- heat exchanger is leeward
Side heat exchanger, and the quantity of the first flow path 106 is identical as the quantity of the sub- heat exchanger 1051, each first flow path
106 outlet end is connect with the arrival end of the wherein one sub- heat exchanger 1051 respectively, and each sub- heat exchanger 1051 goes out
Mouth end is connect with the four-way valve 102.
In the present embodiment, the quantity of above-mentioned sub- heat exchanger 1051 can be configured according to actual needs, below to set
It sets and is illustrated for two sub- heat exchangers 1051.When being defrosted, first one of them sub- heat exchanger 1051 can be carried out
Defrosting, and another sub- heat exchanger 1051 carries out normal heat exchange under heating mode.
Solenoid valve when air conditioner is in normal heating mode, on the first bypass branch 109 and the second bypass branch 110
It is in off state, the solenoid valve in second flow path 107 is in the conductive state.It can electromagnetism in all first flow path 106
Valve is on state；Can also solenoid valve in part first flow path 106 it is in the conductive state, and remaining first flow path
Solenoid valve on 106 is in off state.
In the present embodiment, the quantity of the first bypass branch 109 can be one, and first bypass branch 109 with wherein
One sub- heat exchanger 1051 connects, to only defrost to this sub- heat exchanger 1051；The quantity of first bypass branch 109 is also
Can be to be multiple, optionally, the quantity of the first bypass branch 109 is identical with the quantity of the sub- heat exchanger 1051, it is each described in
The outlet end of first bypass branch 109 is connect with the arrival end of the wherein one sub- heat exchanger 1051 respectively.The present embodiment is to set
It sets and is illustrated for two the first bypass branch 109.
When air conditioner is in defrosting mode, the solenoid valve on the first bypass branch 109 and the second bypass branch 110 is equal
In the conductive state, the solenoid valve in part second flow path 107 is in off state.In the present embodiment, as shown in Fig. 2, with right
Sub- heat exchanger 1051 positioned at left side defrosts, and it is normal under heating mode to carry out the sub- heat exchanger 1051 positioned at right side
It is illustrated for heat exchange.At this point, the solenoid valve in the first flow path 106 connecting with the sub- heat exchanger 1051 for being located at left side is in
Off state, and the solenoid valve on the first bypass branch 109 connecting with the sub- heat exchanger 1051 for being located at left side is on shape
State, the solenoid valve in first flow path 106 connecting with the sub- heat exchanger 1051 for being located at right side is in the conductive state, and right with being located at
The solenoid valve on the first bypass branch 109 that the sub- heat exchanger 1051 of side connects is in off state.So that by throttling member
The refrigerant that part 104 flows out is divided into two-way, enters the sub- heat exchanger 1051 in left side via the first bypass branch 109 all the way, is passing through
When the first bypass branch 109, regenerative apparatus 108 heats the refrigerant flowed through in the first bypass branch 109, so that by
The refrigerant of one bypass branch 109 outflow is high-temperature low-pressure gaseous state, and carries out heat release when sub- heat exchanger 1051 on the left of entrance, from
And it defrosts to the sub- heat exchanger in left side 1051；Another way enters the sub- heat exchanger in right side via one of first flow path 106
1051, and normally exchange heat under heating mode, i.e., the heat in environment is absorbed by the sub- heat exchanger 1051 in right side.
When in left side, the sub- defrosting of heat exchanger 1051 is completed, it can defrost again to the sub- heat exchanger in right side 1051, and make a left side
The sub- heat exchanger 1051 in side is in the normal heat exchange state under heating mode.At this point, being connect with the sub- heat exchanger 1051 for being located at right side
First flow path 106 on solenoid valve first bypassing of being in off state, and connect with the sub- heat exchanger 1051 for being located at right side
Solenoid valve on branch 109 is in the conductive state, the electricity in first flow path 106 connecting with the sub- heat exchanger 1051 for being located at left side
Magnet valve is in the conductive state, and at the solenoid valve on the first bypass branch 109 connecting with the sub- heat exchanger 1051 for being located at left side
In off state.Defrosting principle is same as above, and details are not described herein.
In the present embodiment, in defrost mode, the energy source of whole system is changed from the acting of compressor 101 and outdoor
Hot device 105 absorbs heat from surrounding air, and the energy that compressor 101 does work largely is transferred to the refrigerant gone out from exhaust outlet
Interior, energy is set as Q12；Another part is transferred in regenerative apparatus 108 by 101 shell of compressor, and energy is set as Q22；Right side
The heat that sub- heat exchanger 1051 is absorbed from outside ambient air is set as Q32.The energy dissipation of whole system is mainly that interior is changed
The energy Q5 of sub- 1051 radiation loss of heat exchanger of the energy Q42 of hot 103 radiation loss of device and left side.According to law of conservation of energy,
It can be concluded that formula (3): Q12+Q22+Q32=Q42+Q5.
Formula (3) is compared with formula (1), Q41=Q42, Q31 > Q32, so Q12+Q22 > Q11+Q21.Illustrate compressor 101
Power will not decay, and defrosting process smoothly can be carried out uninterruptedly.
It should be noted that can first be changed a portion when the quantity of sub- heat exchanger 1051 is at least three
Hot device 1051 defrosts, and the sub- heat exchanger 1051 of another part carries out normal heat exchange under heating mode.The principle that defrosts is same
On, details are not described herein.
Air conditioner provided in this embodiment, can be with thus during defrosting by the way that multiple sub- heat exchangers 1051 are arranged
It alternately defrosts at times to each sub- heat exchanger 1051 respectively, and remaining is carried out normally without the sub- heat exchanger 1051 of defrosting
Heat exchange under heating mode, to further increase further such that due to defrosting significant change will not occur for room temperature
User uses comfort level when air-conditioner defrosting.
Further, in order to further increase the defrosting efficiency of air conditioner, the first or second based on the air condition of that present invention
Embodiment, the invention also provides the 3rd embodiment of air conditioner, the second flow path 107 includes being located at the four-way valve 102
With the sub- second flow path 107 between the compressor 101, second bypass branch 110 and the sub- second flow path 107 are simultaneously
Connection.In the present embodiment, the sub- second flow path 107 is the flow path between four-way valve 102c interface and gas-liquid separator.By
In sub- second flow path 107 relatively close to gas-liquid separator, therefore the high-temperature low-pressure gaseous refrigerant flowed out by the second bypass branch 110
Agent will not lose excessive heat, cracking can enter gas-liquid separator and eventually enter into compressor 101, to further drop
Low thermal loss, improves the defrosting efficiency of compressor 101.
It should be noted that in other embodiments, the second bypass branch 110 can also be located outside heat exchanger 105
Flow path between four-way valve 102 is in parallel.
Further, in order to further increase the defrosting efficiency of air conditioner, based on the air condition of that present invention first to third
Any embodiment, the invention also provides the fourth embodiment of air conditioner, the air conditioner further includes being set to the compressor 101
Other and air-out direction successively passes through the fan of the compressor 101 and regenerative apparatus 108.By the way that fan is arranged, so that compressor
The heat that 101 shells distribute is easier to be absorbed by regenerative apparatus 108, so that regenerative apparatus 108 can be preferably to first
Bypass branch 109 and the heating of the second bypass branch 110, further improve the defrosting efficiency of air conditioner.
The present invention further provides a kind of air conditioners.
It is the structural schematic diagram of the 5th embodiment of the air condition of that present invention, air conditioner packet provided by the invention referring to Fig. 3, Fig. 3
Include the heating that compressor 101, four-way valve 102, indoor heat exchanger 103, restricting element 104 and the connection of outdoor heat exchanger 105 are formed
Coolant loop, in the heating coolant loop, the flow path between the restricting element 104 and the outdoor heat exchanger 105 is the
One flow path 106, the air conditioner further include being located at by the compressor 101, distributing for absorbing 101 shell of compressor
The regenerative apparatus 108 of heat, and first bypass branch 109 in parallel with the first flow path 106, the first flow path 106
With solenoid valve is equipped on the first bypass branch 109, first bypass branch 109 flows through the regenerative apparatus 108, and described
Regenerative apparatus 108 heats first bypass branch 109；The outdoor heat exchanger 105 includes at least two sub- heat exchangers
1051, wherein a sub- heat exchanger 1051 is windward side heat exchanger, another sub- heat exchanger is leeward side heat exchanger, and institute
The quantity for stating first flow path 106 is identical as the quantity of the sub- heat exchanger 1051, the outlet end point of each first flow path 106
It is not connect with the arrival end of the wherein one sub- heat exchanger 1051, the outlet end of each sub- heat exchanger 1051 is with described four
Port valve 102 connects.
In the present embodiment, the quantity of the first bypass branch 109 can be one, and first bypass branch 109 with wherein
One sub- heat exchanger 1051 connects, to only defrost to this sub- heat exchanger 1051；The quantity of first bypass branch 109 is also
Can be to be multiple, optionally, the quantity of the first bypass branch 109 is identical with the quantity of the sub- heat exchanger 1051, it is each described in
The outlet end of first bypass branch 109 is connect with the arrival end of the wherein one sub- heat exchanger 1051 respectively.
The present embodiment is not provided with above-mentioned second bypass branch 110 unlike each embodiment of above-mentioned air conditioner, and
The quantity equal at least two of sub- heat exchanger 1051 and first flow path 106, remaining set-up mode can refer to the above-mentioned of air conditioner
Each embodiment, details are not described herein.Optionally, it only defrosts every time to one of them sub- heat exchanger 1051, and remaining is each
A sub- heat exchanger 1051 carries out the heat exchange under normal heating mode.
When being defrosted, the outflow of sub- heat exchanger 1051 only to defrost is low-temp low-pressure liquid refrigerant, and
The outflow of remaining sub- heat exchanger 1051 not defrosted is high-temperature low-pressure gaseous refrigerant, general only at a certain section due to defrosting
The low-temp low-pressure liquid refrigerant for carrying out, therefore flowing out in time will not cause too much influence to heating circulation, and low temperature is low
Pressure liquid refrigerant after gas-liquid separator via can also separate liquid refrigerant.
Air conditioner proposed by the present invention by the way that first bypass branch 109 in parallel with first flow path 106 is arranged, and is being pressed
Regenerative apparatus 108 for absorbing the heat that 101 shell of compressor distributes is set by contracting machine 101, and the first bypass branch 109 flows
Through regenerative apparatus 108, regenerative apparatus 108 can heat the first bypass branch 109, and first flow path 106 and the first bypass branch
109 are equipped with solenoid valve, and in defrosting, the solenoid valve on the first bypass branch 109 is opened, the system flowed out by restricting element 104
When cryogen flows through the first bypass branch 109, the refrigerant flowed through in the first bypass branch 109 is carried out by regenerative apparatus 108
Heating, so that the refrigerant flowed through via the first bypass branch 109 is converted to high-temperature low-pressure gaseous state by low-temp low-pressure liquid, so
Outdoor heat exchanger 105 is flowed into afterwards, and the gaseous refrigerant of high-temperature low-pressure heat release and is converted to low-temp low-pressure in outdoor heat exchanger 105
The heat of liquid refrigerant, releasing defrosts to outdoor heat exchanger 105.Due to during being defrosted, four-way valve 102
Do not need to commutate, therefore indoor heat exchanger 103 still is able to carry out normal heat release, thus air conditioner defrosting when room temperature not
It can be decreased obviously.
The present invention further provides a kind of control methods of air conditioner.The structure of air conditioner can refer to the of above-mentioned air conditioner
One embodiment, the air conditioner further include the controller connecting with the solenoid valve, the control method of the air conditioner include:
When into defrosting mode, the controller controls the cut-off of the solenoid valve in the first flow path 106 and second flow path 107, and controls
Make the solenoid valve conduction on first bypass branch 109 and the second bypass branch 110.
In the present embodiment, the quantity of first flow path 106 can be one.The heating of air conditioner and defrosting principle can join
According to the first embodiment of above-mentioned air conditioner, details are not described herein.
The control method of air conditioner proposed by the present invention, by the way that first bypass branch in parallel with first flow path 106 is arranged
109, and the regenerative apparatus 108 for absorbing the heat that 101 shell of compressor distributes is set by compressor 101, and by the of first
Logical branch 109 flows through regenerative apparatus 108, and regenerative apparatus 108 can heat the first bypass branch 109, and first flow path 106 and the
One bypass branch 109 is equipped with solenoid valve, and in defrosting, the solenoid valve on the first bypass branch 109 is opened, by restricting element
The refrigerants of 104 outflows are when flowing through the first bypass branch 109, by regenerative apparatus 108 to flowing through in the first bypass branch 109
Refrigerant is heated, so that the refrigerant flowed through via the first bypass branch 109 is converted to high temperature by low-temp low-pressure liquid
Low-pressure gaseous, then flow into outdoor heat exchanger 105, the gaseous refrigerant of high-temperature low-pressure in outdoor heat exchanger 105 heat release and turn
It is changed to low-temp low-pressure liquid refrigerant, the heat of releasing defrosts to outdoor heat exchanger 105.Due in the process to defrost
In, four-way valve 102 does not need to commutate, therefore indoor heat exchanger 103 still is able to carry out normal heat release, to defrost in air conditioner
When room temperature will not be decreased obviously.
The present invention further provides a kind of control methods of air conditioner.The structure of air conditioner can refer to the of above-mentioned air conditioner
Two to the 5th embodiments, the air conditioner further include the controller connecting with the solenoid valve, the control method of the air conditioner
Include: the solenoid valve cut-off when entering defrosting mode, in first flow path 106 described in the controller control section, and controls
Solenoid valve conduction in remaining described first flow path 106.
In the present embodiment, the quantity of first flow path 106 is at least two.The heating of air conditioner and defrosting principle can join
According to the second to the 5th embodiment of above-mentioned air conditioner, details are not described herein.
When air conditioner includes the second bypass branch 110, then controller controls the electromagnetism on the second bypass branch 110 simultaneously
Valve conducting, and control the cut-off of the solenoid valve in second flow path 107.
In the present embodiment, the quantity of the first bypass branch 109 can be one, and first bypass branch 109 with wherein
One sub- heat exchanger 1051 connects, to only defrost to this sub- heat exchanger 1051；The quantity of first bypass branch 109 is also
Can be to be multiple, optionally, the quantity of the first bypass branch 109 is identical with the quantity of the sub- heat exchanger 1051, it is each described in
The outlet end of first bypass branch 109 is connect with the arrival end of the wherein one sub- heat exchanger 1051 respectively.In off state
The solenoid valve where the sub- heat exchanger 1051 that is correspondingly connected with of first flow path 106 to end sub- heat exchanger 1051, in leading
The sub- heat exchanger 1051 that first flow path 106 where the solenoid valve of logical state is correspondingly connected with is the sub- heat exchanger 1051 of conducting,
The control method of the air conditioner further include:
When entering defrosting mode, controller control and each sub- heat exchanger 1051 of cut-off be correspondingly connected with the
Solenoid valve conduction on one bypass branch 109, and control by first be correspondingly connected with each sub- heat exchanger 1051 of conducting
Solenoid valve cut-off on logical branch 109.The heating of air conditioner and defrosting principle are referred to the second to the 5th of above-mentioned air conditioner
Embodiment, details are not described herein.
The control method of air conditioner proposed by the present invention, by the way that first bypass branch in parallel with first flow path 106 is arranged
109, and the regenerative apparatus 108 for absorbing the heat that 101 shell of compressor distributes is set by compressor 101, and by the of first
Logical branch 109 flows through regenerative apparatus 108, and regenerative apparatus 108 can heat the first bypass branch 109, and first flow path 106 and the
One bypass branch 109 is equipped with solenoid valve, and in defrosting, the solenoid valve on the first bypass branch 109 is opened, by restricting element
The refrigerants of 104 outflows are when flowing through the first bypass branch 109, by regenerative apparatus 108 to flowing through in the first bypass branch 109
Refrigerant is heated, so that the refrigerant flowed through via the first bypass branch 109 is converted to high temperature by low-temp low-pressure liquid
Low-pressure gaseous, then flow into outdoor heat exchanger 105, the gaseous refrigerant of high-temperature low-pressure in outdoor heat exchanger 105 heat release and turn
It is changed to low-temp low-pressure liquid refrigerant, the heat of releasing defrosts to outdoor heat exchanger 105.Due in the process to defrost
In, four-way valve 102 does not need to commutate, therefore indoor heat exchanger 103 still is able to carry out normal heat release, to defrost in air conditioner
When room temperature will not be decreased obviously.
Further, in order to further increase the defrosting efficiency of air conditioner, the air conditioner further includes and the controller
The indoor hot-swappable fans and outdoor heat exchange fan of connection, the control method of the air conditioner further include: when entering defrosting mode,
The controller control indoor hot-swappable fans are in low wind or halted state, and the control outdoor heat exchange fan is in
Low wind or halted state.Enable the sub- heat exchanger 1051 heated under the model that defrosts is the smallest to reduce the negative of air conditioner
Lotus, to further improve the defrosting efficiency of air conditioner.
Optionally, the control method of the air conditioner further includes, when entering defrosting mode, being set to the compressor 101
Other fan is in normal operation or high wind state.To further improve the heat storage capacity of regenerative apparatus 108, in turn
Further improve the defrosting efficiency of air conditioner.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal device (can be mobile phone, computer, clothes
Business device, air conditioner or the network equipment etc.) execute method described in each embodiment of the present invention.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (8)
1. a kind of air conditioner, the air conditioner includes compressor, four-way valve, indoor heat exchanger, restricting element and outdoor heat exchanger
The heating coolant loop formed is connected, in the heating coolant loop, between the restricting element and the outdoor heat exchanger
Flow path is first flow path, between the outdoor heat exchanger and the compressor and by the outdoor heat exchanger to the compressor
The flow path in direction is second flow path, which is characterized in that the air conditioner further includes being located at by the compressor, being described for absorbing
The regenerative apparatus for the heat that compressor case distributes, and first bypass branch in parallel with the first flow path and with described
Second bypass branch of two flow paths parallel connection, on the first flow path, second flow path, the first bypass branch and the second bypass branch
Equipped with solenoid valve, first bypass branch and the second bypass branch flow through the regenerative apparatus, and the regenerative apparatus is to institute
State the first bypass branch and the heating of the second bypass branch；The air conditioner further includes the controller connecting with the solenoid valve, institute
Controller is stated for when entering defrosting mode, controlling the solenoid valve cut-off in the first flow path and second flow path, and is controlled
Solenoid valve conduction on first bypass branch and the second bypass branch.
2. air conditioner as described in claim 1, which is characterized in that the outdoor heat exchanger includes at least two sub- heat exchangers,
Wherein a sub- heat exchanger is windward side heat exchanger, and another sub- heat exchanger is leeward side heat exchanger, and described first-class
The quantity on road is identical as the quantity of the sub- heat exchanger, and the outlet end of each first flow path is changed with wherein one son respectively
The arrival end of hot device connects, and the outlet end of each sub- heat exchanger is connected with that four-way valve.
3. air conditioner as claimed in claim 2, which is characterized in that the quantity of first bypass branch and the sub- heat exchanger
Quantity it is identical, the outlet end of each first bypass branch is connect with the arrival end of the wherein one sub- heat exchanger respectively.
4. air conditioner as described in any one of claims 1 to 3, which is characterized in that the second flow path includes being located at described four
Sub- second flow path between port valve and the compressor, second bypass branch are in parallel with the sub- second flow path.
5. a kind of control method of air conditioner, which is characterized in that the air conditioner is air conditioner as described in claim 1, institute
The control method for stating air conditioner includes:
When entering defrosting mode, the controller controls the cut-off of the solenoid valve in the first flow path and second flow path, and controls
Make the solenoid valve conduction on first bypass branch and the second bypass branch.
6. a kind of control method of air conditioner, which is characterized in that the air conditioner is air conditioner as claimed in claim 2, described
The control method of air conditioner includes:
When entering defrosting mode, the solenoid valve in first flow path described in the controller control section ends, and controls remaining
Solenoid valve conduction in the first flow path.
7. the control method of air conditioner as claimed in claim 6, which is characterized in that the quantity of first bypass branch and institute
The quantity for stating sub- heat exchanger is identical, and the outlet end of each first bypass branch enters with the wherein one sub- heat exchanger respectively
The connection of mouth end, the sub- heat exchanger that the first flow path where the solenoid valve in off state is correspondingly connected with are that cut-off exchanges heat
Device, the sub- heat exchanger that the first flow path where the solenoid valve in the conductive state is correspondingly connected with are that sub- heat exchanger, institute is connected
State the control method of air conditioner further include:
When entering defrosting mode, the controller control and each first bypass branch ending sub- heat exchanger and being correspondingly connected with
The solenoid valve conduction of road, and control the solenoid valve on the first bypass branch being correspondingly connected with each sub- heat exchanger of conducting
Cut-off.
8. the control method of air conditioner as claimed in claims 6 or 7, which is characterized in that the air conditioner further include with it is described
The indoor hot-swappable fans and outdoor heat exchange fan of controller connection, the control method of the air conditioner further include:
When entering defrosting mode, the controller control indoor hot-swappable fans are in low wind or halted state, and control
It makes the outdoor heat exchange fan and is in low wind or halted state.
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| CN201510817950.8A CN105423589B (en) | 2015-11-20 | 2015-11-20 | Air conditioner and its control method |
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| CN201510817950.8A CN105423589B (en) | 2015-11-20 | 2015-11-20 | Air conditioner and its control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106828015B (en) * | 2017-01-13 | 2024-01-02 | 深圳市科泰新能源车用空调技术有限公司 | Combined heat control system for automobile air conditioner and battery |
| CN107940876A (en) * | 2017-11-03 | 2018-04-20 | 广东美的暖通设备有限公司 | The control method of air conditioner and air conditioner |
| CN108224840B (en) * | 2018-01-25 | 2023-08-15 | 珠海格力电器股份有限公司 | Heat pump air conditioning system and control method |
| CN108413560B (en) * | 2018-02-05 | 2020-12-25 | 青岛海尔空调器有限总公司 | Self-cleaning system of air conditioner indoor unit and control method thereof |
| CN108847759B (en) * | 2018-06-20 | 2020-06-05 | 广东美的制冷设备有限公司 | Control method and device for heating compressor winding |
| CN109405365A (en) * | 2018-09-27 | 2019-03-01 | 珠海格力电器股份有限公司 | Coolant circulating system and its control method, conditioner |
| CN111256290B (en) * | 2020-01-20 | 2021-03-19 | 珠海格力电器股份有限公司 | Heat pump air conditioner |
| CN111271796B (en) * | 2020-03-26 | 2024-02-09 | 宁波奥克斯电气股份有限公司 | Air conditioner and defrosting control method and device thereof |
| CN111623471B (en) * | 2020-05-29 | 2021-08-03 | Tcl空调器(中山)有限公司 | Defrosting method of air conditioner, air conditioner and computer readable storage medium |
| CN114688607B (en) * | 2020-12-31 | 2023-09-01 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and device and air conditioner |
| CN112611027A (en) * | 2021-01-05 | 2021-04-06 | 格力电器（合肥）有限公司 | Air conditioning system and control method thereof |
| CN112902390B (en) * | 2021-02-23 | 2022-04-15 | 珠海格力电器股份有限公司 | Defrosting method and device and air conditioner |
| CN113720057B (en) * | 2021-09-01 | 2022-10-04 | 珠海格力电器股份有限公司 | Refrigerating unit, control method and refrigerating equipment |
| CN113865005B (en) * | 2021-10-28 | 2022-11-22 | 珠海格力电器股份有限公司 | Defrosting shunting method |
| CN114811755A (en) * | 2022-04-01 | 2022-07-29 | 北京小米移动软件有限公司 | Air conditioner, air conditioner control method and device and storage medium |
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