CN108826732A - Air-conditioning system and its control method - Google Patents
Air-conditioning system and its control method Download PDFInfo
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- CN108826732A CN108826732A CN201810840760.1A CN201810840760A CN108826732A CN 108826732 A CN108826732 A CN 108826732A CN 201810840760 A CN201810840760 A CN 201810840760A CN 108826732 A CN108826732 A CN 108826732A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—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
- F25B47/022—Defrosting cycles hot gas 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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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
- F25B2313/025—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units
- F25B2313/0251—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units being defrosted alternately
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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
- F25B2313/025—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units
- F25B2313/0253—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units in parallel arrangements
- F25B2313/02531—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units in parallel arrangements during cooling
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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
- F25B2313/025—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units
- F25B2313/0253—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units in parallel arrangements
- F25B2313/02533—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units in parallel arrangements during heating
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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
- F25B2313/02732—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using two three-way valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2347/00—Details for preventing or removing deposits or corrosion
- F25B2347/02—Details of defrosting cycles
- F25B2347/021—Alternate defrosting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2117—Temperatures of an evaporator
- F25B2700/21174—Temperatures of an evaporator of the refrigerant at the inlet of the evaporator
Abstract
Invention is related to a kind of air-conditioning system：Including indoor unit and outdoor unit, the indoor unit includes indoor heat exchanger, and outdoor unit includes by the first outdoor heat exchanger of pipeline connection, the second outdoor heat exchanger, compressor, four way solenoid valve, the first three-way magnetic valve, the second three-way magnetic valve, electromagnet cut off valve, the first threeway, the second threeway, third threeway, the 4th threeway, first throttle element and the second restricting element.Invention further relates to the control method of above-mentioned air-conditioning system：Air-conditioning system has refrigeration mode, heating mode and defrosting mode, and defrosting mode includes the first defrosting mode and the second defrosting mode.The advantages of invention is：Indoor heat can be prevented to be pumped in defrosting, so as to effectively reduce fluctuations in indoor temperature, room temperature be avoided quickly to reduce, comfort is good.
Description
Technical field
The present invention relates to air-conditioning, in particular to a kind of air-conditioning system and its control method.
Background technique
In winter, when air-conditioning is run in a heating mode, outdoor air exchanges heat with outdoor unit heat exchanger coil pipe, and
Outdoor air can cause the condensation vapor entrained by it in outdoor with after outdoor unit heat exchanger coil heat exchange because temperature reduces
At machine heat exchanger coil surface, cause outdoor unit heat exchanger coil pipe frosting, to influence the heating capacity of air-conditioning, therefore in air-conditioning
Long-play is in heating mode, it is therefore necessary to defrosting is timed to air-conditioning, to guarantee the heating capacity of air-conditioning.It is existing
Defrost mode used by air-conditioning is usually all the switching by four-way reversing valve, changes refrigerant flow direction with this, makes refrigerant from system
Refrigeration cycle is changed into thermal cycle, and high temperature refrigerant gas is transported in the heat exchanger coils of outdoor unit by compressor, most
Achieve the purpose that defrost to outdoor unit heat exchanger coil pipe eventually.But when refrigerant from heating varying cyclically be refrigeration cycle when,
Air-conditioning just will do it refrigeration, and indoor heat will be pumped at this time, and room temperature is caused to reduce, and thus greatly reduce air-conditioning
Comfort.
Summary of the invention
The invention solves one of technical problem be to provide and a kind of can prevent indoor heat quilt in defrosting
It takes away, so as to effectively reduce fluctuations in indoor temperature, room temperature is avoided quickly to reduce, the good air-conditioning system of comfort
System.
In order to solve the above technical problems, the present invention provides a kind of air-conditioning systems with flowering structure：Including indoor unit and room
Outer machine, the indoor unit include indoor heat exchanger, outdoor unit include the first outdoor heat exchanger, the second outdoor heat exchanger,
Compressor, four way solenoid valve, the first three-way magnetic valve, the second three-way magnetic valve, electromagnet cut off valve, the first threeway, the second threeway,
The first of third threeway, the 4th threeway, first throttle element and the second restricting element, the exhaust outlet of compressor and the first threeway
Port connection, the second port of the first threeway be connected to the first port of four way solenoid valve, the third port of the first threeway and the
The first port of two threeways is connected to, and the second port of four way solenoid valve is connected to the first port of indoor heat exchanger, and four are powered
The third port of magnet valve is connected to the air inlet of compressor, and the 4th port of four way solenoid valve and the second port of third threeway connect
Logical, the second port of the second threeway is connected to the third port of the first three-way magnetic valve, the third port of the second threeway and second
The third port of three-way magnetic valve is connected to, and the first port of third threeway is connected to the second port of the second three-way magnetic valve, the
The third port of three threeways is connected to the second port of the first three-way magnetic valve, the first port of the first three-way magnetic valve and first
The first port of outdoor heat exchanger is connected to, the first end of the first port of the second three-way magnetic valve and the second outdoor heat exchanger
Mouth connection, the second port of indoor heat exchanger are connected to the first port of electromagnet cut off valve, the second port of electromagnet cut off valve
It being connected to the second port of the 4th threeway, the first port of the 4th threeway is connected to the first port of the second restricting element, and the 4th
The third port of threeway is connected to the first port of first throttle element, the second port of first throttle element and the first outdoor heat
The second port of exchanger is connected to, and the second port of the second restricting element is connected to the second port of the second outdoor heat exchanger.
After adopting the above structure, compared with prior art, the present invention has the following advantages that：
When air-conditioning system is in refrigeration mode, the second port of four way solenoid valve is connected with third port, four-way electromagnetic
The first port of valve is connected with the 4th port, and the first port of the first three-way magnetic valve is connected with second port, and the one or three is powered
The third port of magnet valve is closed, and the first port of the second three-way magnetic valve is connected with second port, and the of the second three-way magnetic valve
Three port shutdowns, electromagnet cut off valve are opened, and the flow direction of refrigerant is at this time：Compressor → the first threeway → four way solenoid valve (first
Port to the 4th port) → third threeway → first three-way magnetic valve and the second three-way magnetic valve → first outdoor heat exchanger and
Second outdoor heat exchanger → first throttle element and the second restricting element → four threeways → electromagnet cut off valve → Indoor Thermal are handed over
Parallel operation → four way solenoid valve (second port to third port) → compressor；
When air-conditioning system is in heating mode, the first port of four way solenoid valve is connected with second port, four-way electromagnetic
The third port of valve is connected with the 4th port, and the first port of the first three-way magnetic valve is connected with second port, and the one or three is powered
The third port of magnet valve is closed, and the first port of the second three-way magnetic valve is connected with second port, and the of the second three-way magnetic valve
Three port shutdowns, electromagnet cut off valve are opened, and the flow direction of refrigerant is at this time：Compressor → the first threeway → four way solenoid valve (first
Port is to second port) → indoor heat exchanger → electromagnet cut off valve → four threeways → first throttle element and the second throttling member
Part → first outdoor heat exchanger and the second outdoor heat exchanger → first three-way magnetic valve and the second three-way magnetic valve → third
Threeway → four way solenoid valve (the 4th port to third port) → compressor；
Since air-conditioning system tool is there are two outdoor heat exchanger, the defrosting mode of air-conditioning system includes the first defrosting mould
Formula and the second defrosting mode, for defrosting to the first outdoor heat exchanger, the second defrosting mode is used for the first defrosting mode
It defrosts to the second outdoor heat exchanger；
When air-conditioning system is in the first defrosting mode, indoor unit is shut down, the first port and second end of four way solenoid valve
Mouth conducting, the third port of four way solenoid valve are connected with the 4th port, the first port and third port of the first three-way magnetic valve
The second port of conducting, the first three-way magnetic valve is closed, and the first port of the second three-way magnetic valve is connected with second port, and second
The third port of three-way magnetic valve is closed, and electromagnet cut off valve is closed, and the flow direction of refrigerant is at this time：Compressor → the first threeway → the
Two threeways → the first three-way magnetic valve → first outdoor heat exchanger → first throttle element → the 4th threeway → the second throttling member
Part → the second outdoor heat exchanger → second three-way magnetic valve → third threeway → four way solenoid valve (the 4th port to third end
Mouthful) → compressor；
When air-conditioning system is in the second defrosting mode, indoor unit is shut down, the first port and second end of four way solenoid valve
Mouth conducting, the third port of four way solenoid valve are connected with the 4th port, the first port and second port of the first three-way magnetic valve
The third port of conducting, the first three-way magnetic valve is closed, and the first port of the second three-way magnetic valve is connected with third port, and second
The second port of three-way magnetic valve is closed, and electromagnet cut off valve is closed, and the flow direction of refrigerant is at this time：Compressor → the first threeway → the
Two threeways → the second three-way magnetic valve → the second outdoor heat exchanger → the second restricting element → four threeways → first throttle member
Part → the first outdoor heat exchanger → first three-way magnetic valve → third threeway → four way solenoid valve (the 4th port to third end
Mouthful) → compressor.
From the foregoing, it will be observed that air-conditioning system of the invention is under the premise of can be realized conventional refrigeration and heat-production functions, to biography
The air-conditioner defrosting mode of system is improved, i.e., after entering defrosting mode, refrigerant is not required to flow through room air-conditioning system of the invention
Inside heat exchanger, but in the defrosting of the first outdoor heat exchanger, indoor heat exchanger is substituted with the second outdoor heat exchanger, and
In the defrosting of the second outdoor heat exchanger, indoor heat exchanger is substituted with the first outdoor heat exchanger, can thus be generated very
More benefits：1, it prevents indoor heat largely to be taken away, to effectively reduce fluctuations in indoor temperature, avoids Indoor Temperature
Degree quickly reduces, and then substantially increases the comfort of air-conditioning system of the invention；2, air-conditioning system of the invention is from system
When heat pattern is switched to defrosting mode, compressor need to only close electromagnet cut off valve, and to the first three-way magnetic valve without shutting down
Switching operation is carried out with the second three-way magnetic valve, therefore defrosts execution movement quickly, when so as to effectively reduce defrosting
Between；3, when air-conditioning system of the invention is switched to defrosting mode from heating mode, four way solenoid valve is not necessarily to carry out switching operation, because
This can greatly increase the service life of four way solenoid valve.
Air-conditioning system of the present invention, wherein outdoor unit further includes the first outer blower and the second outer blower, the first exogenous wind
The first outdoor heat exchanger of machine face, second outer the second outdoor heat exchanger of blower face.
The setting of above structure can control the second outer blower fortune so that when air-conditioning system is in the first defrosting mode
Row, can thus accelerate the air circulation on the second outdoor heat exchanger periphery, to improve the heat exchange of the second outdoor heat exchanger
Effect, and then greatly shorten the defrosting time of the first outdoor heat exchanger；Similarly, when air-conditioning system is in the second defrosting mode
When, the first outer fan operation can be controlled, can thus accelerate the air circulation on the first outdoor heat exchanger periphery, to improve
The heat transfer effect of first outdoor heat exchanger, and then greatly shorten the defrosting time of the second outdoor heat exchanger.
Air-conditioning system of the present invention, wherein the first outdoor heat exchanger is equipped with the first temperature sensor, second Room
Outer heat-exchanger is equipped with second temperature sensor.
The setting of first temperature sensor can make air-conditioning system of the invention accurately detect the reality of the first outdoor heat exchanger
Shi Wendu, to keep air-conditioning system of the invention more accurate to the defrosting control of the first outdoor heat exchanger；Similarly, the second temperature
The setting of degree sensor can make air-conditioning system of the invention accurately detect the real time temperature of the second outdoor heat exchanger, to make this
The air-conditioning system of invention is more accurate to the defrosting control of the second outdoor heat exchanger.
The invention solves another technical problem be to provide and a kind of can prevent indoor heat from being taken out in defrosting
It walks, so as to effectively reduce fluctuations in indoor temperature, room temperature is avoided quickly to reduce, the good air-conditioning system of comfort
Control method.
In order to solve the above technical problems, the present invention provides a kind of control methods of above-mentioned air-conditioning system：Air-conditioning system tool
There are refrigeration mode, heating mode and defrosting mode；
When air-conditioning system is in refrigeration mode, the second port of four way solenoid valve is connected with third port, four-way electromagnetic
The first port of valve is connected with the 4th port, and the first port of the first three-way magnetic valve is connected with second port, and the one or three is powered
The third port of magnet valve is closed, and the first port of the second three-way magnetic valve is connected with second port, and the of the second three-way magnetic valve
Three port shutdowns, electromagnet cut off valve are opened；
When air-conditioning system is in heating mode, the first port of four way solenoid valve is connected with second port, four-way electromagnetic
The third port of valve is connected with the 4th port, and the first port of the first three-way magnetic valve is connected with second port, and the one or three is powered
The third port of magnet valve is closed, and the first port of the second three-way magnetic valve is connected with second port, and the of the second three-way magnetic valve
Three port shutdowns, electromagnet cut off valve are opened；
Defrosting mode includes the first defrosting mode and the second defrosting mode；
When air-conditioning system is in the first defrosting mode, indoor unit is shut down, the first port and second end of four way solenoid valve
Mouth conducting, the third port of four way solenoid valve are connected with the 4th port, the first port and third port of the first three-way magnetic valve
The second port of conducting, the first three-way magnetic valve is closed, and the first port of the second three-way magnetic valve is connected with second port, and second
The third port of three-way magnetic valve is closed, and electromagnet cut off valve is closed；
When air-conditioning system is in the second defrosting mode, indoor unit is shut down, the first port and second end of four way solenoid valve
Mouth conducting, the third port of four way solenoid valve are connected with the 4th port, the first port and second port of the first three-way magnetic valve
The third port of conducting, the first three-way magnetic valve is closed, and the first port of the second three-way magnetic valve is connected with third port, and second
The second port of three-way magnetic valve is closed, and electromagnet cut off valve is closed.
Compared with prior art, the control method of air-conditioning system of the invention has the following advantages that：
When air-conditioning system is in refrigeration mode, the flow direction of refrigerant is：Compressor → the first threeway → four way solenoid valve (the
Single port is to the 4th port) → third threeway → first three-way magnetic valve and the second three-way magnetic valve → first outdoor heat exchanger
With the second outdoor heat exchanger → first throttle element and the second restricting element → four threeways → electromagnet cut off valve → Indoor Thermal
Exchanger → four way solenoid valve (second port to third port) → compressor；
When air-conditioning system is in heating mode, the flow direction of refrigerant is：Compressor → the first threeway → four way solenoid valve (the
Single port is to second port) → indoor heat exchanger → electromagnet cut off valve → four threeways → first throttle element and the second throttling
Element → first outdoor heat exchanger and the second outdoor heat exchanger → first three-way magnetic valve and the second three-way magnetic valve → the
Three threeways → four way solenoid valve (the 4th port to third port) → compressor；
When air-conditioning system is in the first defrosting mode, the flow direction of refrigerant is：Compressor → the first threeway → the second threeway
→ the first three-way magnetic valve → the first outdoor heat exchanger → four threeway of first throttle element → the → second restricting element → the
Two outdoor heat exchangers → the second three-way magnetic valve → third threeway → four way solenoid valve (the 4th port to third port) → pressure
Contracting machine；
When air-conditioning system is in the second defrosting mode, the flow direction of refrigerant is：Compressor → the first threeway → the second threeway
→ the second three-way magnetic valve → the second outdoor heat exchanger → the second restricting element → four threeways → first throttle element → the
One outdoor heat exchanger → the first three-way magnetic valve → third threeway → four way solenoid valve (the 4th port to third port) → pressure
Contracting machine.
From the foregoing, it will be observed that the control method of air-conditioning system of the invention is before it can be realized conventional refrigeration and heat-production functions
It puts, traditional air-conditioner defrosting mode is improved, i.e., air-conditioning system of the invention is after entering defrosting mode, and refrigerant is not
Indoor heat exchanger need to be flowed through, but in the defrosting of the first outdoor heat exchanger, Indoor Thermal is substituted with the second outdoor heat exchanger
Exchanger, and in the defrosting of the second outdoor heat exchanger, indoor heat exchanger is substituted with the first outdoor heat exchanger, thus can
Generate very more benefits：1, it prevents indoor heat largely to be taken away, to effectively reduce fluctuations in indoor temperature, avoids
Room temperature quickly reduces, and then substantially increases the comfort of air-conditioning system of the invention；2, air-conditioning of the invention
When system is switched to defrosting mode from heating mode, compressor need to only close electromagnet cut off valve, and to the one or three without shutting down
Three-way electromagnetic valve and the second three-way magnetic valve carry out switching operation, therefore defrost execution movement quickly, so as to effectively subtract
Few defrosting time；3, when air-conditioning system of the invention is switched to defrosting mode from heating mode, four way solenoid valve is without being changed
To operation, therefore the service life of four way solenoid valve can be greatly increased.
The control method of air-conditioning system of the present invention, wherein outdoor unit further includes the first outer blower and the second exogenous wind
Machine, first outer the first outdoor heat exchanger of blower face, second outer the second outdoor heat exchanger of blower face；
When air-conditioning system is in the first defrosting mode, the first outer fan parking, the second outer fan operation.
When air-conditioning system is in the second defrosting mode, the first outer fan operation, the second outer fan parking.
The control method of above-mentioned air-conditioning system to control outside second when air-conditioning system is in the first defrosting mode
Fan operation can thus accelerate the air circulation on the second outdoor heat exchanger periphery, to improve the second outdoor heat exchanger
Heat transfer effect, and then greatly shorten the defrosting time of the first outdoor heat exchanger；Similarly, when air-conditioning system of the invention is in
When the second defrosting mode, the first outer fan operation can be controlled, can thus accelerate the air on the first outdoor heat exchanger periphery
Circulation, to improve the heat transfer effect of the first outdoor heat exchanger, and then when greatly shortening the defrosting of the second outdoor heat exchanger
Between.
The control method of air-conditioning system of the present invention, wherein the first outdoor heat exchanger is passed equipped with the first temperature
Sensor, the second outdoor heat exchanger are equipped with second temperature sensor；
When air-conditioning system is in heating mode operation, in any one section of continuous operating time t of compressornIt is interior,
If meeting condition always：Tdef1≤T1, and t1≥tb, then air-conditioning system enters the first defrosting mode；
If meeting condition always：Tdef2≤T1, and t2≥tb, then air-conditioning system enters the second defrosting mode；
Wherein, Tdef1For the real time temperature that the first temperature sensor detects, T1Enter defrosting mould for air-conditioning system is preset
Formula temperature, t1For Cumulative Elapsed Time of first outdoor heat exchanger under air-conditioning system heating mode, tbIt is default for air-conditioning system
Defrosting interval time, Tdef2For the real time temperature that second temperature sensor detects, t2It is the second outdoor heat exchanger in air-conditioning
Cumulative Elapsed Time under system heating mode.
The control method of above-mentioned air-conditioning system makes air-conditioning system to heat exchange outside the first outdoor heat exchanger and second Room
The judgement of device whether to defrost is more accurate, so as to substantially increase the comfort of air-conditioning system.
The control method of air-conditioning system of the present invention, wherein T1Value range be -8~-6 DEG C, tbValue model
It encloses for 50~70min, tnValue range be 6~8min.
The control method of above-mentioned air-conditioning system makes air-conditioning system to heat exchange outside the first outdoor heat exchanger and second Room
The judgement of device whether to defrost is more accurate, so as to substantially increase the comfort of air-conditioning system.
The control method of air-conditioning system of the present invention, wherein
After air-conditioning system enters the first defrosting mode, if meeting condition：Tdef1≥T2Or t3≥ta, then air-conditioning system
Exit the first defrosting mode；
After air-conditioning system enters the second defrosting mode, if meeting condition：Tdef2≥T2Or t4≥ta, then air-conditioning system
Exit the second defrosting mode；
Wherein, T2Defrosting mode temperature, t are exited for air-conditioning system is preset3For the first defrosting mode continuous service when
Between, t4For the continuous working period of the second defrosting mode, taFor the preset longest defrosting time of air-conditioning system.
The control method of above-mentioned air-conditioning system makes air-conditioning system to heat exchange outside the first outdoor heat exchanger and second Room
The defrosting control of device is more accurate, so as to substantially increase the comfort of air-conditioning system.
The control method of air-conditioning system of the present invention, wherein T2Value range be 11~13 DEG C, taValue range
For 2~4min.
The control method of above-mentioned air-conditioning system makes air-conditioning system to heat exchange outside the first outdoor heat exchanger and second Room
The defrosting control of device is more accurate, so as to substantially increase the comfort of air-conditioning system.
The control method of air-conditioning system of the present invention, wherein
When air-conditioning system re-powers or exits the first defrosting mode or goes to refrigeration mode from heating mode, t1Clearly
Zero；
When air-conditioning system re-powers or exits the second defrosting mode or goes to refrigeration mode from heating mode, t2Clearly
Zero；
When air-conditioning system exits the first defrosting mode, t3It resets；
When air-conditioning system exits the second defrosting mode, t4It resets.
The control method of above-mentioned air-conditioning system makes air-conditioning system to heat exchange outside the first outdoor heat exchanger and second Room
Judgement that whether device defrosts and more accurate to the defrosting control of the two, so as to substantially increase air-conditioning system
The comfort of system.
Detailed description of the invention
Fig. 1 is the system block diagram of air-conditioning system of the invention.
Description of symbols：
1, indoor heat exchanger；2, inner blower；3, the first outdoor heat exchanger；4, the second outdoor heat exchanger；5, it compresses
Machine；6, four way solenoid valve；7, the first three-way magnetic valve；8, the second three-way magnetic valve；9, electromagnet cut off valve；10, the first threeway；
11, the second threeway；12, third threeway；13, the 4th threeway；14, first throttle element；15, the second restricting element；16, outside first
Blower；17, the second outer blower；18, the first temperature sensor；19, second temperature sensor.
Specific embodiment
Air-conditioning system of the present invention and its control method are made with reference to the accompanying drawings and detailed description further detailed
Explanation.
Embodiment 1：
As shown in Figure 1, air-conditioning system of the invention includes indoor unit and outdoor unit, indoor unit includes indoor heat exchanger 1
With inner blower 2, indoor unit is existing conventional techniques, and therefore, not repeat them here；Outdoor unit includes the first outdoor heat exchanger 3, second
Outdoor heat exchanger 4, compressor 5, four way solenoid valve 6, the first three-way magnetic valve 7, the second three-way magnetic valve 8, electromagnet cut off valve
9, the first threeway 10, the second threeway 11, third threeway 12, the 4th threeway 13, first throttle element 14, the second restricting element 15,
First outer blower 16 and the second outer blower 17, the exhaust outlet of compressor 5 are connected to the first port of the first threeway 10, and the one or three
Logical 10 second port is connected to the first port of four way solenoid valve 6, the third port of the first threeway 10 and the second threeway 11
First port connection, the second port of four way solenoid valve 6 are connected to the first port of indoor heat exchanger 1, four way solenoid valve 6
Third port is connected to the air inlet of compressor 5, and the 4th port of four way solenoid valve 6 and the second port of third threeway 12 connect
Logical, the second port of the second threeway 11 is connected to the third port of the first three-way magnetic valve 7, the third port of the second threeway 11 and
The third port of second three-way magnetic valve 8 is connected to, the second port of the first port of third threeway 12 and the second three-way magnetic valve 8
Connection, the third port of third threeway 12 is connected to the second port of the first three-way magnetic valve 7, and the of the first three-way magnetic valve 7
Single port is connected to the first port of the first outdoor heat exchanger 3, the outer heat of the first port and second Room of the second three-way magnetic valve 8
The first port of exchanger 4 is connected to, and the second port of indoor heat exchanger 1 is connected to the first port of electromagnet cut off valve 9, electromagnetism
The second port of shut-off valve 9 is connected to the second port of the 4th threeway 13, the first port of the 4th threeway 13 and the second throttling member
The first port of part 15 is connected to, and the third port of the 4th threeway 13 is connected to the first port of first throttle element 14, first segment
The second port of fluid element 14 is connected to the second port of the first outdoor heat exchanger 3, the second port of the second restricting element 15
It is connected to the second port of the second outdoor heat exchanger 4, first outer 16 the first outdoor heat exchanger of face 3 of blower, the second exogenous wind
17 the second outdoor heat exchanger of face 4 of machine, the first outdoor heat exchanger 3 are equipped with the first temperature sensor 18, it is preferred that first
Temperature sensor 18 is arranged at the second port of the first outdoor heat exchanger 3；Second outdoor heat exchanger 4 is equipped with the second temperature
Spend sensor 19, it is preferred that second temperature sensor 19 is arranged at the second port of the second outdoor heat exchanger 4.
For ease of description and understand, the port in the present embodiment on involved pipeline component all uses " first end
The terms such as mouth ", " second port ", " third port ", " the 4th port " are described, to each pipeline component in Fig. 1 of attached drawing
Each port all carried out numeral mark, " first port " is corresponding digital " 1 ", and " second port " is corresponding digital " 2 ", " third
Port " is corresponding digital " 3 ", and " the 4th port " is corresponding digital " 4 ", and so on.
For ease of description and understand, multiple pipeline components identical to function use " first ", " the in the present embodiment
Two ", the terms such as " third ", " the 4th " distinguish, but these terms do not represent each component order of connection, do not represent refrigerant yet
Flow through sequence, such as the first threeway 10, the second threeway 11, third threeway 12, the 4th threeway 13.
First throttle element 14 and the second restricting element 15 in the present embodiment are capillary；Certainly, first throttle member
Part 14 and the second restricting element 15 can also use other restricting elements, such as electric expansion valve.
The first threeway 10, the second threeway 11, third threeway 12 and the 4th threeway 13 in the present embodiment might not be practical
In the presence of their function is all to make three pipeline connections together, plays the work that the refrigerant in pipeline is collaborated or shunted
With therefore, they can be substituted with simplified structure, such as wherein open up through-hole, Ling Yigen on the peripheral wall on a root canal road
Pipeline one end is connected to the through-hole.
The first outdoor heat exchanger 3 and the distribution of the second about 4 outdoor heat exchanger in the present embodiment, and the first outdoor heat
Coil pipe in exchanger 3 and the second outdoor heat exchanger 4 is all disposed on the same perpendicular, is not only convenient for outdoor unit in this way
Design and manufacture, and also ensure the heat exchange property of the first outdoor heat exchanger 3 and the second outdoor heat exchanger 4, avoid
The heat exchange property for interfering and influencing them is generated between the two.
Embodiment 2：
Present embodiments provide a kind of control method of the air-conditioning system in embodiment 1：
The air-conditioning system has refrigeration mode, heating mode and defrosting mode；
When air-conditioning system is in refrigeration mode, the second port of four way solenoid valve 6 is connected with third port, four-way electromagnetic
The first port of valve 6 is connected with the 4th port, and the first port of the first three-way magnetic valve 7 is connected with second port, the first threeway
The third port of solenoid valve 7 is closed, and the first port of the second three-way magnetic valve 8 is connected with second port, the second three-way magnetic valve 8
Third port close, electromagnet cut off valve 9 open；
When air-conditioning system is in heating mode, the first port of four way solenoid valve 6 is connected with second port, four-way electromagnetic
The third port of valve 6 is connected with the 4th port, and the first port of the first three-way magnetic valve 7 is connected with second port, the first threeway
The third port of solenoid valve 7 is closed, and the first port of the second three-way magnetic valve 8 is connected with second port, the second three-way magnetic valve 8
Third port close, electromagnet cut off valve 9 open；
Defrosting mode includes the first defrosting mode and the second defrosting mode；
When air-conditioning system is in the first defrosting mode, indoor unit is shut down, the first port and second end of four way solenoid valve 6
Mouth conducting, the third port of four way solenoid valve 6 are connected with the 4th port, the first port of the first three-way magnetic valve 7 and third end
The second port of mouth conducting, the first three-way magnetic valve 7 is closed, and the first port of the second three-way magnetic valve 8 is connected with second port,
The third port of second three-way magnetic valve 8 is closed, and electromagnet cut off valve 9 is closed；Meanwhile first outer blower 16 shut down, the second exogenous wind
Machine 17 is run.
When air-conditioning system is in the second defrosting mode, indoor unit is shut down, the first port and second end of four way solenoid valve 6
Mouth conducting, the third port of four way solenoid valve 6 are connected with the 4th port, the first port and second end of the first three-way magnetic valve 7
The third port of mouth conducting, the first three-way magnetic valve 7 is closed, and the first port of the second three-way magnetic valve 8 is connected with third port,
The second port of second three-way magnetic valve 8 is closed, and electromagnet cut off valve 9 is closed；Meanwhile first outer blower 16 run, the second exogenous wind
Machine 17 is shut down.
When air-conditioning system is in refrigeration mode, the flow direction of refrigerant is：5 → the first 10 → four way solenoid valve of threeway of compressor
6 (first port to the 4th port) → third threeway, 12 → the first three-way magnetic valve 7 and the second three-way magnetic valve 8 → the first are outdoor
The 15 → the 4th 13 → electricity of threeway of heat exchanger 3 and second 4 → first throttle of outdoor heat exchanger element 14 and the second restricting element
1 → four way solenoid valve of magnetic 9 → indoor heat exchanger of shut-off valve 6 (second port to third port) → compressor 5；
When air-conditioning system is in heating mode, the flow direction of refrigerant is：5 → the first 10 → four way solenoid valve of threeway of compressor
6 (first port to second port) → 1 → electromagnet cut off valve of indoor heat exchanger 9 → the 4th 13 → first throttle of threeway element 14
With 4 → the first three-way magnetic valve 7 and second of 15 → the first outdoor heat exchanger 3 of the second restricting element and the second outdoor heat exchanger
12 → four way solenoid valve of three-way magnetic valve 8 → third threeway 6 (the 4th port to third port) → compressor 5；
When air-conditioning system is in the first defrosting mode, the flow direction of refrigerant is：5 → the first threeway the 10 → the 2nd 3 of compressor
Logical 11 → the first three-way magnetic valve, 7 → the first 3 → first throttle of outdoor heat exchanger element 14 → the 4th threeway, 13 → the second section
15 → the second outdoor heat exchanger of fluid element, 4 → the second 12 → four way solenoid valve of three-way magnetic valve 8 → third threeway, 6 (the 4th end
Mouth arrives third port) → compressor 5；
When air-conditioning system is in the second defrosting mode, the flow direction of refrigerant is：5 → the first threeway the 10 → the 2nd 3 of compressor
Logical the 15 → the 4th 13 → first segment of threeway of 11 → the second three-way magnetic valve, 8 → the second outdoor heat exchanger, 4 → the second restricting element
14 → the first outdoor heat exchanger of fluid element, 3 → the first 12 → four way solenoid valve of three-way magnetic valve 7 → third threeway, 6 (the 4th end
Mouth arrives third port) → compressor 5.
Whether the control method of the air-conditioning system of the present embodiment needs the determination method into defrosting mode to air-conditioning system
It is as follows：
When air-conditioning system is in heating mode operation, in any one section of continuous operating time t of compressor 5nIt is interior,
If meeting condition always：Tdef1≤T1, and t1≥tb, then air-conditioning system enters the first defrosting mode；
If meeting condition always：Tdef2≤T1, and t2≥tb, then air-conditioning system enters the second defrosting mode；
Wherein, Tdef1For the real time temperature that the first temperature sensor 18 detects, T1Enter defrosting for air-conditioning system is preset
Model temperature, t1For Cumulative Elapsed Time of first outdoor heat exchanger 3 under air-conditioning system heating mode, tbFor air-conditioning system
Preset defrosting interval time, Tdef2For the real time temperature that second temperature sensor 19 detects, t2For the second outdoor heat exchanger
4 Cumulative Elapsed Time under air-conditioning system heating mode；
T1Value range be -8~-6 DEG C, preferably -7 DEG C；tbValue range be 50~70min, preferably 60min；
tnValue range be 6~8min, preferably 7min.
The determination method whether control method of the air-conditioning system of the present embodiment exits defrosting mode to air-conditioning system is as follows：
After air-conditioning system enters the first defrosting mode, if meeting condition：Tdef1≥T2Or t3≥ta, then air-conditioning system
Exit the first defrosting mode；
After air-conditioning system enters the second defrosting mode, if meeting condition：Tdef2≥T2Or t4≥ta, then air-conditioning system
Exit the second defrosting mode；
Wherein, T2Defrosting mode temperature, t are exited for air-conditioning system is preset3For the first defrosting mode continuous service when
Between, t4For the continuous working period of the second defrosting mode, taFor the preset longest defrosting time of air-conditioning system.
T2Value range be 11~13 DEG C, preferably 12 DEG C；taValue range is 2~4min, preferably 3min.
Certainly, there is also the feelings that the first outdoor heat exchanger 3 and the second outdoor heat exchanger 4 meet defrosting condition simultaneously
Condition, then when the above-described situation occurs, need to only preset and preferentially defrost to one of outdoor heat exchanger, and
When that outdoor heat exchanger preferentially to defrost completes defrosting, then defrost to another outdoor heat exchanger.
Air-conditioning system reenters heating mode after exiting defrosting mode.
In order to enable whether air-conditioning system removes the first outdoor heat exchanger 3 and the second outdoor heat exchanger 4
The judgement of frost and more accurate to the defrosting of the two control, so as to substantially increase the comfort of air-conditioning system,
When air-conditioning system re-powers or exits the first defrosting mode or goes to refrigeration mode from heating mode, t1Clearly
Zero；
When air-conditioning system re-powers or exits the second defrosting mode or goes to refrigeration mode from heating mode, t2Clearly
Zero；
When air-conditioning system exits the first defrosting mode, t3It resets；
When air-conditioning system exits the second defrosting mode, t4It resets.
The control method of air-conditioning system in the present embodiment under the premise of can be realized conventional refrigeration and heat-production functions,
Traditional air-conditioner defrosting mode is improved, i.e., after entering defrosting mode, refrigerant is not required to pass through interior air-conditioning system
Heat exchanger, but in the defrosting of the first outdoor heat exchanger 3, indoor heat exchanger 1 is substituted with the second outdoor heat exchanger 4,
And in the defrosting of the second outdoor heat exchanger 4, indoor heat exchanger 1 is substituted with the first outdoor heat exchanger 3, can thus be generated
Very more benefit：1, it prevents indoor heat largely to be taken away, to effectively reduce fluctuations in indoor temperature, avoids room
Interior temperature quickly reduces, and then substantially increases the comfort of air-conditioning system；2, air-conditioning system is switched to from heating mode
When defrosting mode, compressor need to only close electromagnet cut off valve 9, and to the first three-way magnetic valve 7 and the second threeway without shutting down
Solenoid valve 8 carries out switching operation, therefore defrosts execution movement quickly, so as to effectively reduce defrosting time；3, air-conditioning
When system is switched to defrosting mode from heating mode, four way solenoid valve 6 can greatly increase four without carrying out switching operation
The service life of three-way electromagnetic valve 6.
Above embodiment be only preferred embodiments of the present invention will be described, not to the scope of the present invention into
Row limits, and without departing from the spirit of the design of the present invention, those of ordinary skill in the art make technical solution of the present invention
Various changes and improvements out should all be fallen into the protection scope that claims of the present invention determines.
Claims (10)
1. a kind of air-conditioning system, it is characterised in that：Including indoor unit and outdoor unit, the indoor unit includes indoor heat exchanger
(1), the outdoor unit includes the first outdoor heat exchanger (3), the second outdoor heat exchanger (4), compressor (5), four-way electromagnetic
Valve (6), the first three-way magnetic valve (7), the second three-way magnetic valve (8), electromagnet cut off valve (9), the first threeway (10), the second threeway
(11), third threeway (12), the 4th threeway (13), first throttle element (14) and the second restricting element (15), the compression
The exhaust outlet of machine (5) is connected to the first port of the first threeway (10), and the second port of first threeway (10) is powered with four
The first port of magnet valve (6) is connected to, and the third port of first threeway (10) is connected to the first port of the second threeway (11),
The second port of the four way solenoid valve (6) is connected to the first port of indoor heat exchanger (1), the four way solenoid valve (6)
Third port be connected to the air inlet of compressor (5), the 4th port of the four way solenoid valve (6) and third threeway (12)
Second port connection, the second port of second threeway (11) is connected to the third port of the first three-way magnetic valve (7), described
The third port of second threeway (11) is connected to the third port of the second three-way magnetic valve (8), and the of the third threeway (12)
Single port is connected to the second port of the second three-way magnetic valve (8), the third port and the first threeway of the third threeway (12)
The second port of solenoid valve (7) is connected to, the first port of first three-way magnetic valve (7) and the first outdoor heat exchanger (3)
First port connection, the first port of the first port of second three-way magnetic valve (8) and the second outdoor heat exchanger (4)
Connection, the second port of the indoor heat exchanger (1) are connected to the first port of electromagnet cut off valve (9), the electromagnetism cut-off
The second port of valve (9) is connected to the second port of the 4th threeway (13), the first port and second of the 4th threeway (13)
The first port of restricting element (15) is connected to, and the first of the third port of the 4th threeway (13) and first throttle element (14)
Port connection, the second port of the first throttle element (14) are connected to the second port of the first outdoor heat exchanger (3), institute
The second port for stating the second restricting element (15) is connected to the second port of the second outdoor heat exchanger (4).
2. air-conditioning system according to claim 1, it is characterised in that：The outdoor unit further include the first outer blower (16) and
Second outer blower (17), first outer blower (16) first outdoor heat exchanger of face (3), the second outer blower (17) is just
To the second outdoor heat exchanger (4).
3. air-conditioning system according to claim 1 or 2, it is characterised in that：First outdoor heat exchanger (3) is equipped with
First temperature sensor (18), second outdoor heat exchanger (4) are equipped with second temperature sensor (19).
4. a kind of control method of air-conditioning system according to claim 1, it is characterised in that：The air-conditioning system has system
Cold mode, heating mode and defrosting mode；
When the air-conditioning system is in refrigeration mode, the second port of the four way solenoid valve (6) is connected with third port, institute
The first port for stating four way solenoid valve (6) is connected with the 4th port, the first port and second of first three-way magnetic valve (7)
The third port of port conducting, first three-way magnetic valve (7) is closed, the first port of second three-way magnetic valve (8)
It is connected with second port, the third port of second three-way magnetic valve (8) is closed, and the electromagnet cut off valve (9) is opened；
When the air-conditioning system is in heating mode, the first port of the four way solenoid valve (6) is connected with second port, institute
The third port for stating four way solenoid valve (6) is connected with the 4th port, the first port and second of first three-way magnetic valve (7)
The third port of port conducting, first three-way magnetic valve (7) is closed, the first port of second three-way magnetic valve (8)
It is connected with second port, the third port of second three-way magnetic valve (8) is closed, and the electromagnet cut off valve (9) is opened；
The defrosting mode includes the first defrosting mode and the second defrosting mode；
When the air-conditioning system is in the first defrosting mode, the indoor unit is shut down, the first end of the four way solenoid valve (6)
Mouth is connected with second port, and the third port of the four way solenoid valve (6) is connected with the 4th port, first three-way magnetic valve
(7) first port is connected with third port, and the second port of first three-way magnetic valve (7) is closed, second threeway
The first port of solenoid valve (8) is connected with second port, and the third port of second three-way magnetic valve (8) is closed, the electricity
Magnetic shut-off valve (9) is closed；
When the air-conditioning system is in the second defrosting mode, the indoor unit is shut down, the first end of the four way solenoid valve (6)
Mouth is connected with second port, and the third port of the four way solenoid valve (6) is connected with the 4th port, first three-way magnetic valve
(7) first port is connected with second port, and the third port of first three-way magnetic valve (7) is closed, second threeway
The first port of solenoid valve (8) is connected with third port, and the second port of second three-way magnetic valve (8) is closed, the electricity
Magnetic shut-off valve (9) is closed.
5. a kind of control method of air-conditioning system according to claim 4, it is characterised in that：The outdoor unit further includes
One outer blower (16) and the second outer blower (17), first outer blower (16) first outdoor heat exchanger of face (3), described
Two outer blower (17) the second outdoor heat exchangers of face (4)；
When the air-conditioning system is in the first defrosting mode, the first outer blower (16) is shut down, the second outer blower (17) operation.
When the air-conditioning system is in the second defrosting mode, the first outer blower (16) operation, the second outer blower (17) is shut down.
6. the control method of air-conditioning system according to claim 5, it is characterised in that：First outdoor heat exchanger
(3) the first temperature sensor (18) are equipped with, second outdoor heat exchanger (4) is equipped with second temperature sensor (19)；
When the air-conditioning system is in heating mode operation, in any one section of continuous operating time t of compressor (5)nIt is interior,
If meeting condition always：Tdef1≤T1, and t1≥tb, then the air-conditioning system enters the first defrosting mode；
If meeting condition always：Tdef2≤T1, and t2≥tb, then the air-conditioning system enters the second defrosting mode；
Wherein, Tdef1For the real time temperature that the first temperature sensor (18) detects, T1Enter defrosting mould for air-conditioning system is preset
Formula temperature, t1For Cumulative Elapsed Time of the first outdoor heat exchanger (3) under air-conditioning system heating mode, tbFor air-conditioning system
Preset defrosting interval time, Tdef2For the real time temperature that second temperature sensor (19) detects, t2For heat exchange outside second Room
Cumulative Elapsed Time of the device (4) under air-conditioning system heating mode.
7. the control method of air-conditioning system according to claim 6, it is characterised in that：T1Value range be -8~-6 DEG C,
tbValue range be 50~70min, tnValue range be 6~8min.
8. the control method of air-conditioning system according to claim 6 or 7, it is characterised in that：
After the air-conditioning system enters the first defrosting mode, if meeting condition：Tdef1≥T2Or t3≥ta, then the air-conditioning
System exits the first defrosting mode；
After the air-conditioning system enters the second defrosting mode, if meeting condition：Tdef2≥T2Or t4≥ta, then the air-conditioning
System exits the second defrosting mode；
Wherein, T2Defrosting mode temperature, t are exited for air-conditioning system is preset3For the continuous working period of the first defrosting mode, t4
For the continuous working period of the second defrosting mode, taFor the preset longest defrosting time of air-conditioning system.
9. the control method of air-conditioning system according to claim 8, it is characterised in that：T2Value range be 11~13 DEG C,
taValue range is 2~4min.
10. the control method of air-conditioning system according to claim 9, it is characterised in that：
When the air-conditioning system re-powers or exits the first defrosting mode or goes to refrigeration mode from heating mode, t1It resets；
When the air-conditioning system re-powers or exits the second defrosting mode or goes to refrigeration mode from heating mode, t2It resets；
When the air-conditioning system exits the first defrosting mode, t3It resets；
When the air-conditioning system exits the second defrosting mode, t4It resets.
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| WO2021134959A1 (en) * | 2019-12-31 | 2021-07-08 | 青岛海尔空调器有限总公司 | Air conditioner, and method and device for controlling defrosting of air conditioner |
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| WO2021218350A1 (en) * | 2020-04-30 | 2021-11-04 | 青岛海尔空调电子有限公司 | Air conditioning system control method and air conditioning system |
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