CN107504640A - Air-conditioning system, air conditioner and refrigerant recovering control method - Google Patents

Air-conditioning system, air conditioner and refrigerant recovering control method Download PDF

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Publication number
CN107504640A
CN107504640A CN201710723125.0A CN201710723125A CN107504640A CN 107504640 A CN107504640 A CN 107504640A CN 201710723125 A CN201710723125 A CN 201710723125A CN 107504640 A CN107504640 A CN 107504640A
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CN
China
Prior art keywords
heat exchanger
temperature
air
conditioning
refrigerant recovering
Prior art date
Application number
CN201710723125.0A
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Chinese (zh)
Inventor
黎顺全
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广东美的制冷设备有限公司
美的集团股份有限公司
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Priority to CN201710723125.0A priority Critical patent/CN107504640A/en
Publication of CN107504640A publication Critical patent/CN107504640A/en

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Abstract

The invention discloses a kind of air-conditioning system, the air-conditioning system includes compressor, four-way valve, indoor heat exchanger, outdoor heat exchanger, control valve and throttling control assembly;The first end of four-way valve connects through outdoor heat exchanger, throttling control assembly, indoor heat exchanger and the second end of control valve and four-way valve successively, and the 3rd end of four-way valve and the exhaust outlet of compressor connect, and the 4th end of four-way valve and the gas returning port of compressor connect;The refrigerant that throttling control assembly is used to flow into outdoor heat exchanger indoor heat exchanger throttles, while controls the aperture of stream between outdoor heat exchanger and indoor heat exchanger.The present invention also proposes a kind of air conditioner and refrigerant recovering control method.The present invention can directly close throttling control assembly when carrying out refrigerant recovering, and to carry out refrigerant recovering, and when refrigerant recovering is completed, closing control valve realizes the automatic recovery of refrigerant, reduces refrigerant recovering cost.

Description

Air-conditioning system, air conditioner and refrigerant recovering control method
Technical field
The present invention relates to air-conditioner field, more particularly to a kind of air-conditioning system, air conditioner and refrigerant recovering control method.
Background technology
The medium that air conditioner is freezed during refrigerant, exchanged heat by indoor heat exchanger and outdoor heat exchanger to realize The refrigeration of air conditioner, and when refrigerant flows through air-conditioning system and exchanged heat, often occur that refrigerant is stayed in pipeline, refrigeration is imitated Fruit impacts.Professional is generally required in the prior art and carries out refrigerant recovering manually, and then refrigerant recovering cost is high.
The content of the invention
It is a primary object of the present invention to propose a kind of air-conditioning system, air conditioner and refrigerant recovering control method, it is intended to real The automatic recovery of existing refrigerant, to reduce refrigerant recovering cost.
The present invention provides a kind of air-conditioning system, and the air-conditioning system includes compressor, four-way valve, indoor heat exchanger, outdoor Heat exchanger, the first magnetic valve and throttling control assembly;The first end of the four-way valve is successively through the outdoor heat exchanger, throttling Control assembly, indoor heat exchanger and first magnetic valve are connected with the second end of the four-way valve, and the of the four-way valve Three ends are connected with the exhaust outlet of the compressor, and the 4th end of the four-way valve is connected with the gas returning port of the compressor;It is described The refrigerant that throttling control assembly is used to flow into the outdoor heat exchanger indoor heat exchanger throttles, while controls the outdoor The aperture of stream between heat exchanger and indoor heat exchanger, the air-conditioning system also includes temperature sensor and processor, described Temperature sensor is located at indoor heat exchanger and/or outdoor heat exchanger, the processor respectively with the throttling control assembly, first Magnetic valve and temperature sensor electrical connection;The processor is used for the temperature value detected according to the temperature sensor Determine whether refrigerant reclaims completion.
Alternatively, the throttling control assembly includes electric expansion valve.
Alternatively, the throttling control assembly includes capillary and second solenoid valve.
Alternatively, the air-conditioning system is provided with four temperature sensors, and each temperature sensor is located at institute respectively State in the middle part of indoor heat exchanger, indoor heat exchanger exports, in the middle part of outdoor heat exchanger and outdoor heat exchanger outlet.
Alternatively, the air-conditioning system also includes gas-liquid separator, and the gas-liquid separator is connected to the four-way valve Between 3rd end and the gas returning port of the compressor.
In addition, to achieve the above object, the present invention also proposes a kind of refrigerant recovering control method, the air conditioner is included such as Above-described air-conditioning system, the refrigerant recovering control method include:
When receiving refrigerant recovering instruction, indoor fan rotating speed is reduced to preset rotation speed;
When blower fan runs preset duration with the preset rotation speed indoors, the temperature that the temperature sensor detects is obtained As initial indoor heat exchanger temperature and/or initial outdoor sensor temperature, and close throttling control assembly;
The temperature that temperature sensor described in timing acquisition detects, and calculate indoor heat exchanger temperature rising value and/or Depreciation at a temperature of outdoor heat exchanger;
When the indoor heat exchanger temperature rising value is more than the first preset temperature value, and/or in the outdoor heat exchanger When temperature drop-out value is more than the second preset temperature value, first magnetic valve is closed.
Alternatively, perform it is described indoor fan rotating speed is reduced to preset rotation speed step while, perform step:
Control compressor is run with preset rotation speed, and controls the aperture of throttling control assembly to be adjusted to default aperture.
Alternatively, the refrigerant recovering control method also includes step:
When receiving refrigerant recovering instruction, judge whether the air conditioner is transducer air conditioning;
When the air conditioner is air-conditioner with fixed frequency, execution is described to be reduced to preset rotation speed by indoor fan rotating speed;
When the air conditioner is transducer air conditioning, indoor fan rotating speed is reduced to preset rotation speed, control compressor with Preset rotation speed is run, and controls the aperture of throttling control assembly to be adjusted to default aperture.
Alternatively, the refrigerant recovering control method also includes step:
When the indoor heat exchanger temperature rising value is more than the first preset temperature value, and/or in the outdoor heat exchanger When temperature drop-out value is more than the second preset temperature value, judge whether the difference of the indoor heat exchanger temperature and indoor temperature is less than 3rd preset temperature value and/or whether it is less than the 4th preset temperature in the difference of the outdoor heat exchanger temperature and outdoor temperature Value;
It is less than the 3rd preset temperature value and/or in the outdoor in the difference of the indoor heat exchanger temperature and indoor temperature When the difference of heat exchange temperature and outdoor temperature is less than four preset temperature values, the step for closing first magnetic valve is performed Suddenly.
In addition, to achieve the above object, the present invention also proposes a kind of air conditioner, including air-conditioning system as previously discussed, institute Stating air conditioner also includes memory and processor, and the processor is electrically connected with the throttling control assembly and the first magnetic valve Connect, the refrigerant recovering control program that can be run on the processor, the refrigerant recovering control are stored with the memory The step of refrigerant recovering control method as described above is realized when program is by the computing device.
Air-conditioning system, air conditioner and refrigerant recovering control method proposed by the present invention, can be direct when carrying out refrigerant recovering Throttling control assembly is closed, to carry out refrigerant recovering, and the temperature detected by temperature sensor determines whether refrigerant recovering is complete Into closing the automatic recovery that the first magnetic valve realizes refrigerant when refrigerant recovering is completed, reduce refrigerant recovering cost.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of air-conditioning system one of the present invention;
Fig. 2 is the schematic flow sheet of the embodiment of refrigerant recovering control method one of the present invention.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides a kind of air-conditioning system.
Reference picture 1, Fig. 1 are the structural representation of the embodiment of air-conditioning system one of the present invention.
The present embodiment proposes a kind of air-conditioning system, and the air-conditioning system includes compressor 10, four-way valve 20, indoor heat exchanger 30th, outdoor heat exchanger 40, the first magnetic valve 50 and throttling control assembly 60;The first end 21 of four-way valve 20 is changed through outdoor successively Hot device 40, throttling control assembly 60, the magnetic valve 50 of indoor heat exchanger 30 and first are connected with the second end 22 of four-way valve 20, and four 3rd end 23 of port valve 20 is connected with the exhaust outlet of compressor 10, and the 4th end 24 of four-way valve 20 and the gas returning port of compressor 10 connect Connect;The refrigerant that throttling control assembly 60 is used to flow into outdoor heat exchanger 40 indoor heat exchanger 30 throttles, while control room The aperture of stream between external heat exchanger 40 and indoor heat exchanger 30, air-conditioning system also include temperature sensor 70 and processor (not shown), temperature sensor 70 are located at indoor heat exchanger 30 and/or outdoor heat exchanger 40, processor (not shown) Electrically connected respectively with throttling control assembly 60, the first magnetic valve 50 and temperature sensor 70;Processor (not shown) is used Determine whether refrigerant reclaims completion in the temperature value detected according to temperature sensor 70.
Air-conditioning system can be set one or more sensors are located at the middle part of indoor heat exchanger 30, indoor heat exchanger 30 exports, Four temperature can be set in optional position among the middle part of outdoor heat exchanger 40 and outdoor heat exchanger 40 export, such as the air-conditioning system Sensor 70, each temperature sensor 70 is located at the middle part of indoor heat exchanger 30 respectively, indoor heat exchanger 30 exports, outdoor heat exchanger 40 middle parts and outdoor heat exchanger 40 export, and also can only set a sensor to be located at the middle part of indoor heat exchanger 30, indoor heat exchange Device 30 exports, the middle part of outdoor heat exchanger 40 and outdoor heat exchanger 40 export.
It is understood that temperature sensor 70, the first magnetic valve 50 and throttling control assembly in the air-conditioning system 60 can be connected with processor, realize automatically controlling during refrigerant recovering, and the processor can be the processor of air conditioner built-in. When receiving refrigerant recovering instruction, processor closes throttling control assembly 60, and when refrigerant recovering is completed, closes first Magnetic valve 50.
The throttling control assembly 60 can be electric expansion valve, both can be throttled or controlled outdoor heat exchanger 40 to be changed with interior The aperture of stream between hot device 30;Or the throttling control assembly 60 can be by second solenoid valve (not shown) and capillary (not shown) forms, and capillary (not shown) plays throttling action, and second solenoid valve (not shown) plays control The effect of the aperture of stream between outdoor heat exchanger 40 and indoor heat exchanger 30, the throttling control of the magnetic valve and capillary composition Component 60 processed can be applied in air-conditioner with fixed frequency.
Gas-liquid separator 80 can be connected between the gas returning port of compressor 10 and the first magnetic valve 50, to flowing into the return-air of compressor 10 The refrigerant of mouth carries out gas-liquid separation, to avoid the infringement to compressor 10.
In the present embodiment, close after throttling control assembly 60 (closing magnetic valve or electric expansion valve), it is outdoor The refrigerant of side enters in outdoor heat exchanger 40, and the refrigerant of indoor enters in compressor 10 to carry out refrigerant recovering, in refrigerant It can judge whether refrigerant reclaims completion by the condition of setting in removal process.The condition that refrigerant recovering is completed can be throttling control The duration that the aperture of component 60 processed is zero reaches preset duration, when duration is more than preset duration, judges refrigerant recovering Complete;Or can also be realized by detecting the temperature of indoor heat exchanger 30 and/or the temperature of outdoor heat exchanger 40, changed according to interior The temperature of hot device 30 rises and the Wen Duxiajiang of outdoor heat exchanger 40 can determine that whether refrigerant reclaims completion.
The air-conditioning system that the present embodiment proposes can directly close throttling control assembly 60, to enter when carrying out refrigerant recovering Row refrigerant recovering, and the temperature detected by temperature sensor 70 determines whether refrigerant recovering is completed, when refrigerant recovering is completed The automatic recovery that the first magnetic valve 50 realizes refrigerant is closed, reduces refrigerant recovering cost.
Reference picture 2, Fig. 2 are the schematic flow sheet of refrigerant recovering control method first embodiment of the present invention.
The present embodiment proposes a kind of refrigerant recovering control method, and refrigerant recovering control method includes:
Step S10, when receiving refrigerant recovering instruction, indoor fan rotating speed is reduced to preset rotation speed;
Refrigerant recovering instruction can be triggered by user, and user can pass through the control in remote control or air-conditioner panel when triggering Part is realized, can also be realized by modes such as voice and gestures, not limited herein.Preset rotation speed can be air conditioner lowest gear Rotating speed be alternatively the rotating speed that user pre-sets, or the preset rotation speed is the carry out refrigerant recovering that developer is specially set Rotating speed, the rotating speed is relatively low rotating speed.
Step S20, when blower fan runs preset duration with preset rotation speed indoors, obtain the temperature that temperature sensor detects As initial indoor heat exchanger temperature and/or initial outdoor sensor temperature, and close throttling control assembly;
Step S30, the temperature that timing acquisition temperature sensor detects, and calculate the temperature rising value of indoor heat exchanger And/or depreciation at a temperature of outdoor heat exchanger;
The temperature rising value of indoor heat exchanger can be detected by the temperature sensor in indoor heat exchanger obtained temperature with And the difference of initial indoor heat exchanger temperature obtains, depreciation can pass through the temperature in outdoor heat exchanger at a temperature of outdoor heat exchanger The temperature and the difference of initial outdoor heat exchanger temperature that sensor detects obtain.
Step S40, when heat exchange temperature rising value is more than the first preset temperature value indoors, and/or in outdoor heat exchanger When temperature drop-out value is more than the second preset temperature value, the first magnetic valve is closed.
Because during refrigerant recovering, refrigerant recovering is into compressor in indoor set pipeline, then in indoor heat exchanger Refrigerant is recycled in compressor so that the temperature of indoor heat exchanger constantly raises, you can by the temperature of indoor heat exchanger Appreciate to determine whether to complete refrigerant recovering;And the refrigerant in outdoor unit pipeline is flowed into outdoor heat exchanger, simultaneously because outdoor The refrigerant of heat exchanger no longer exchanges heat, then outdoor heat exchange refrigerant therein can constantly reduce temperature, the i.e. temperature in outdoor heat exchanger When drop-out value is more than the second preset temperature value, it is believed that refrigerant recovering is completed, first preset temperature value and the second preset temperature value Can it is equal also.
It is understood that the temperature rising value of indoor heat exchanger may include temperature rising value in the middle part of heat exchanger and/or The temperature rising value of indoor heat exchanger outlet, at a temperature of depreciation may include in the middle part of outdoor heat exchanger at a temperature of outdoor heat exchanger Depreciation at a temperature of depreciation and/or indoor heat exchanger export.
Will the throttle aperture regulation of control assembly of closing throttling control assembly in the present embodiment is zero, because throttling is controlled Component processed can be made up of magnetic valve and capillary, or the throttling control assembly is electric expansion valve, close throttling control Magnetic valve can be closed during component accordingly or closes electric expansion valve.
If being detected in air conditioner running, refrigerant recovering instructs, can be after the first magnetic valve is closed, to air-conditioning Device is shut down, and is restarted after shut down, and the first magnetic valve and regulation throttling control assembly are opened after restarting Aperture, while air conditioner is run according to the parameter before refrigerant recovering, such as air conditioner is according to the frequency before refrigerant recovering Operation, then need to adjust the aperture of throttling control assembly according to the frequency.
Refrigerant recovering control method disclosed in the present embodiment, when carrying out refrigerant recovering, it can directly close throttling control group Part, to carry out refrigerant recovering, and the temperature detected by temperature sensor determines whether refrigerant recovering is completed, complete in refrigerant recovering Into when close the automatic recovery that the first magnetic valve realizes refrigerant, reduce refrigerant recovering cost.
Further, refrigerant recovering control method second embodiment of the present invention is proposed based on first embodiment, in this implementation In example, refrigerant recovering control method also includes:
When heat exchange temperature rising value is more than the first preset temperature value indoors, and/or in the decline of outdoor heat exchanger temperature When value is more than the second preset temperature value, judge whether the difference of indoor heat exchanger temperature and indoor temperature is less than the 3rd preset temperature It is worth and/or whether is less than the 4th preset temperature value in the difference of outdoor heat exchanger temperature and outdoor temperature;
The difference of heat exchange temperature and indoor temperature is less than the 3rd preset temperature value and/or in outdoor heat exchanger temperature indoors When degree and the difference of outdoor temperature are less than four preset temperature values, step S40 is performed, that is, closes the first magnetic valve.
Because indoor heat exchanger and outdoor heat exchanger will not be exchanged heat again during refrigerant recovering, then interior is changed The temperature of hot device and outdoor heat exchanger can be close to indoor temperature, then the difference of heat exchange temperature and indoor temperature is small indoors In the 3rd preset temperature value and/or when the difference of outdoor heat exchanger temperature and outdoor temperature is less than four preset temperature values, sentence Determine air-conditioner coolant recovery to complete.
Further, when heat exchange temperature rising value is more than the first preset temperature value indoors, and/or in outdoor heat exchanger When temperature drop-out value is more than the second preset temperature value, judge whether the difference of indoor heat exchanger temperature and indoor temperature is less than the 3rd Preset temperature value and/or whether it is less than the 4th preset temperature value in the difference of outdoor heat exchanger temperature and outdoor temperature, indoors The difference of heat exchange temperature and indoor temperature is less than the 3rd preset temperature value and/or in outdoor heat exchanger temperature and outdoor temperature When difference is less than four preset temperature values, judge that air-conditioner coolant recovery is completed, the accurate of judgement is completed to improve refrigerant recovering Rate.
It is understood that to reduce the detection number of indoor heat exchanger temperature and/or outdoor heat exchanger temperature to reduce System energy consumption, the temperature that temperature sensor detects can be obtained, and calculate indoor heat exchanger after air conditioner runs preset duration Temperature rising value and/or outdoor heat exchanger at a temperature of depreciation, to carry out the judgement of refrigerant recovering completion.
The temperature of depreciation and/or outdoor heat exchanger at a temperature of technical scheme is by indoor heat exchanger disclosed in the present embodiment Rising value determines whether refrigerant is completed so that air conditioner can complete refrigerant recovering in time, avoid the waste of the energy.
Further, propose that refrigerant recovering control method the 3rd of the present invention is implemented based on first embodiment or second embodiment Example, in the present embodiment, perform while indoor fan rotating speed is reduced into the step of preset rotation speed, perform step:Control pressure Contracting machine is run with preset rotation speed, and controls the aperture of throttling control assembly to be adjusted to default aperture.
Because air conditioner is divided into convertible frequency air-conditioner and fixed frequency air conditioner, only need to control compressor for transducer air conditioning with pre- If rotating speed is run, for convertible frequency air-conditioner, control throttling control assembly while controlling compressor to be run with preset rotation speed Aperture be adjusted to default aperture so that the minimum energy spent by air conditioner.
It is understood that also can be that fixed frequency air conditioner and convertible frequency air-conditioner only design a control journey for institute's organic type Sequence, i.e., air conditioner is judged when carrying out refrigerant recovering for fixed frequency air conditioner or convertible frequency air-conditioner, i.e., referred to receiving refrigerant recovering When making, judge whether air conditioner is transducer air conditioning;When air conditioner is air-conditioner with fixed frequency, performing reduces indoor fan rotating speed To preset rotation speed;When air conditioner is transducer air conditioning, indoor fan rotating speed is reduced to preset rotation speed, control compressor is with pre- If rotating speed is run, and controls the aperture of throttling control assembly to be adjusted to default aperture.
In technical scheme disclosed in the present embodiment, run for transducer air conditioning in control compressor with preset rotation speed, and The aperture of control throttling control assembly is adjusted to default aperture, to reduce energy consumption of the air conditioner during refrigerant recovering.
In the above-described embodiments, air conditioner enters refrigerant recovering in some patterns of operation as defrost etc. is not easy to interrupt, Then when receiving refrigerant recovering instruction, current operational mode is judged;When current operational mode is preset running mode, Output can not carry out the information of refrigerant recovering.
It is understood that refrigerant recovering is realized in cooling mode, when receiving refrigerant recovering instruction, air-conditioning is obtained The current operational mode of device, when the current operational mode of air conditioner is heating mode, air conditioner is can control by current operation Pattern switching is reduced to preset rotation speed to refrigeration mode, and by indoor fan rotating speed, and blower fan is pre- with preset rotation speed operation indoors If during duration, close throttling control assembly;When refrigerant recovering is completed, the first magnetic valve is closed.
Further, the present invention also proposes a kind of air conditioner, including the air-conditioning system as more than, and air conditioner also includes storage Device and processor, processor electrically connect with throttling control assembly and the first magnetic valve, and being stored with memory can be in processor The refrigerant recovering control program of upper operation, the refrigerant such as any of the above item is realized when refrigerant recovering control program is executed by processor The step of recycling and control method.
The refrigerant recovering control program that processor in air conditioner is stored by calling in memory, to realize air-conditioning system In refrigerant recovering.
The preferred embodiments of the present invention are these are only, are not intended to limit the scope of the invention, it is every to utilize this hair The equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills Art field, is included within the scope of the present invention.

Claims (10)

1. a kind of air-conditioning system, it is characterised in that the air-conditioning system is changed including compressor, four-way valve, indoor heat exchanger, outdoor Hot device, the first magnetic valve and throttling control assembly;The first end of the four-way valve is controlled through the outdoor heat exchanger, throttling successively Component, indoor heat exchanger and first magnetic valve processed are connected with the second end of the four-way valve, and the 3rd of the four-way valve the End is connected with the exhaust outlet of the compressor, and the 4th end of the four-way valve is connected with the gas returning port of the compressor;The section The refrigerant that flow control component is used to flow into the outdoor heat exchanger indoor heat exchanger throttles, while controls the outdoor to change The aperture of stream between hot device and indoor heat exchanger, the air-conditioning system also include temperature sensor and processor, the temperature Degree sensor be located at indoor heat exchanger and/or outdoor heat exchanger, the processor respectively with the throttling control assembly, first electric Magnet valve and temperature sensor electrical connection;The temperature value that the processor is used to be detected according to the temperature sensor is true Determine whether refrigerant reclaims completion.
2. the air-conditioning system as described in right 1, it is characterised in that the throttling control assembly includes electric expansion valve.
3. air-conditioning system as claimed in claim 1, it is characterised in that the throttling control assembly includes capillary and the second electricity Magnet valve.
4. the air-conditioning system as described in claim any one of 1-3, it is characterised in that the air-conditioning system is provided with four temperature Sensor, each temperature sensor is respectively positioned at indoor heat exchanger middle part, indoor heat exchanger outlet, outdoor heat exchanger Middle part and outdoor heat exchanger outlet.
5. the air-conditioning system as described in claim any one of 1-3, it is characterised in that the air-conditioning system also includes gas-liquid separation Device, the gas-liquid separator are connected between the 3rd end of the four-way valve and the gas returning port of the compressor.
6. a kind of refrigerant recovering control method, it is characterised in that the air conditioner is included as described in claim any one of 1-5 Air-conditioning system, the refrigerant recovering control method include:
When receiving refrigerant recovering instruction, indoor fan rotating speed is reduced to preset rotation speed;
When blower fan runs preset duration with the preset rotation speed indoors, the temperature conduct that the temperature sensor detects is obtained Initial indoor heat exchanger temperature and/or initial outdoor sensor temperature, and close throttling control assembly;
The temperature that temperature sensor described in timing acquisition detects, and calculate temperature rising value and/or the outdoor of indoor heat exchanger Depreciation at a temperature of heat exchanger;
When the indoor heat exchanger temperature rising value is more than the first preset temperature value, and/or in the outdoor heat exchanger temperature When drop-out value is more than the second preset temperature value, first magnetic valve is closed.
7. refrigerant recovering control method as claimed in claim 6, it is characterised in that execution is described to reduce indoor fan rotating speed To preset rotation speed step while, perform step:
Control compressor is run with preset rotation speed, and controls the aperture of throttling control assembly to be adjusted to default aperture.
8. refrigerant recovering control method as claimed in claim 6, it is characterised in that the refrigerant recovering control method also includes Step:
When receiving refrigerant recovering instruction, judge whether the air conditioner is transducer air conditioning;
When the air conditioner is air-conditioner with fixed frequency, execution is described to be reduced to preset rotation speed by indoor fan rotating speed;
When the air conditioner is transducer air conditioning, indoor fan rotating speed is reduced to preset rotation speed, control compressor is with default Rotating speed is run, and controls the aperture of throttling control assembly to be adjusted to default aperture.
9. the refrigerant recovering control method as described in claim any one of 6-8, it is characterised in that the refrigerant recovering controlling party Method also includes step:
When the indoor heat exchanger temperature rising value is more than the first preset temperature value, and/or in the outdoor heat exchanger temperature When drop-out value is more than the second preset temperature value, judge whether the difference of the indoor heat exchanger temperature and indoor temperature is less than the 3rd Preset temperature value and/or whether it is less than the 4th preset temperature value in the difference of the outdoor heat exchanger temperature and outdoor temperature;
It is less than the 3rd preset temperature value and/or in the outdoor heat exchange in the difference of the indoor heat exchanger temperature and indoor temperature When the difference of device temperature and outdoor temperature is less than four preset temperature values, described the step of closing first magnetic valve is performed.
10. a kind of air conditioner, its feature is being, including the air-conditioning system as described in claim any one of 1-5, the air conditioner Also include memory and processor, the processor electrically connects with the throttling control assembly and the first magnetic valve, described to deposit The refrigerant recovering control program that can be run on the processor is stored with reservoir, the refrigerant recovering control program is described The step of refrigerant recovering control method as any one of claim 6 to 8 is realized during computing device.
CN201710723125.0A 2017-08-21 2017-08-21 Air-conditioning system, air conditioner and refrigerant recovering control method CN107504640A (en)

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Application publication date: 20171222