CN109708247A - A kind of control method, control device and the air conditioner of combustibility secondary refrigerant leakage - Google Patents
A kind of control method, control device and the air conditioner of combustibility secondary refrigerant leakage Download PDFInfo
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- CN109708247A CN109708247A CN201811512208.6A CN201811512208A CN109708247A CN 109708247 A CN109708247 A CN 109708247A CN 201811512208 A CN201811512208 A CN 201811512208A CN 109708247 A CN109708247 A CN 109708247A
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Abstract
The present invention provides a kind of control method of flammable secondary refrigerant leakage, control device and air conditioner, method includes the flammable refrigerant concentration every first time interval measurement indoor unit, when the flammable refrigerant concentration exceeds predetermined concentration value, close the refrigerant feed line of indoor set heat exchanger, operating compressor generates the pressure difference of indoor unit and outdoor unit to extract the flammable refrigerant of indoor unit out, the flammable refrigerant is focused in outdoor unit pipeline, refrigerant every the second time interval measurement indoor set heat exchanger flows out pipeline inner pressure, when refrigerant outflow pipeline inner pressure exceeds scheduled pressure value, execute first step, until refrigerant outflow pipeline inner pressure is less than or equal to scheduled pressure value, it closes refrigerant and flows out pipeline, finally shut down.
Description
Technical field
The invention belongs to air conditioner technical fields, and in particular to it is a kind of combustibility secondary refrigerant leakage control method, control dress
It sets and air conditioner.
Background technique
Current social, air-conditioning have become important component for people's lives.The security and reliability of air-conditioning and people cease
Manner of breathing close, other than fire, coolant leakage have become influence personal safety major hidden danger, especially low combustible refrigerant, such as
The case of the R32 refrigerant air-conditioning explosion of generation.After refrigerant reaches a certain concentration in air, not only human health is generated huge
Harm, and have the security risk of explosion.So providing a kind of control method of flammable secondary refrigerant leakage of effectively control, control dress
It sets particularly significant with air-conditioning.
Based on technical problem present in above-mentioned combined air conditioners, there has been no relevant solutions；Therefore there is an urgent need to seek
Effective scheme is sought to solve the above problems.
Summary of the invention
In place of solving above-mentioned the deficiencies in the prior art, the present invention provide a kind of flammable secondary refrigerant leakage control method,
Control device and air conditioner, which solve the risks of existing air-conditioning combustibility secondary refrigerant leakage.
The purpose of the present invention is be achieved by the following technical programs.
It is a kind of combustibility secondary refrigerant leakage control method include the following steps,
First step, every the flammable refrigerant concentration of first time interval measurement indoor unit, when the flammable refrigerant
Concentration exceeds predetermined concentration value, closes the refrigerant feed line of indoor set heat exchanger, and operating compressor generates indoor unit and outdoor
The pressure difference of machine is focused on the flammable refrigerant in outdoor unit pipeline with extracting the flammable refrigerant of indoor unit out,
Second step, the refrigerant every the second time interval measurement indoor set heat exchanger flows out pipeline inner pressure, when described
Refrigerant flows out pipeline inner pressure and exceeds scheduled pressure value, executes first step, until refrigerant outflow pipeline inner pressure is less than
Equal to scheduled pressure value,
Third step closes refrigerant and flows out pipeline, finally shuts down.
In the control method of the flammable secondary refrigerant leakage, first step, the concentration being arranged on indoor machine base is passed
The flammable refrigerant concentration that motor spindle deposits in sensor measuring chamber, the predetermined concentration value are less than under flammable refrigerant kindling
Concentration is limited, when the flammable refrigerant concentration exceeds predetermined concentration value, transmission alarm is simultaneously switched to refrigeration mode, turns off interior
The refrigerant feed line of machine heat exchanger, operating compressor generate the pressure difference of indoor unit and outdoor unit to extract the combustibility of indoor unit out
Refrigerant focuses on the flammable refrigerant in outdoor unit pipeline.
In the control method of the flammable secondary refrigerant leakage, first step, the first time interval is 10 minutes, institute
/ 5th that predetermined concentration value is flammable refrigerant kindling least concentration are stated, when the flammable refrigerant concentration is dense beyond making a reservation for
Angle value, control unit send alarm command to buzzer, and buzzer sounds an alarm, and air-conditioning is switched to refrigeration mode.
In the control method of the flammable secondary refrigerant leakage, second step is mounted on indoor-unit cooling-medium feed line
For first solenoid closure to close indoor-unit cooling-medium feed line, the flammable refrigerant of operating compressor extraction indoor unit is sent to room
In the condenser and system pipeline of outer machine.
In the control method of the flammable secondary refrigerant leakage, third step is arranged in indoor-unit cooling-medium outflow pipeline
Pressure sensor flows out pipeline inner pressure every 5 seconds measurement indoor-unit cooling-mediums, when refrigerant outflow pipeline inner pressure exceeds
0.1Mpa executes second step, until refrigerant outflow pipeline inner pressure is less than or equal to 0.1Mpa to terminate to receive liquid automatically.
In the control method of the flammable secondary refrigerant leakage, third step, every the second time interval measurement indoor unit
Refrigerant flows out pipeline inner pressure, when refrigerant outflow pipeline inner pressure exceeds atmospheric pressure, execution second step, until described
Refrigerant flows out pipeline inner pressure and is less than atmospheric pressure to terminate to receive liquid automatically.
In the control method of the flammable secondary refrigerant leakage, four steps, indoor-unit cooling-medium flows out pipeline and is equipped with second
Solenoid valve is closed second solenoid valve to close indoor-unit cooling-medium outflow pipeline, finally stops compressor.
According to another aspect of the present invention, a kind of control device of flammable secondary refrigerant leakage includes,
Compressor,
Concentration sensor is arranged on indoor machine base, and the concentration sensor is every first time interval measuring chamber
The flammable refrigerant concentration of interior motor spindle deposition,
Pressure sensor is arranged in indoor-unit cooling-medium outflow pipeline, and the pressure sensor is every the second time interval
It measures indoor-unit cooling-medium and flows out pipeline inner pressure,
First valve, the first valve for being configured to on-off indoor-unit cooling-medium feed line are mounted on indoor-unit cooling-medium feed line
On,
Second valve, the second valve for being configured to on-off indoor-unit cooling-medium outflow pipeline are mounted on indoor-unit cooling-medium outflow pipeline
On,
Control unit is electrically connected the concentration sensor, pressure sensor, the compressor, the first valve and
Two valves,
Exceed predetermined concentration value in response to the concentration of concentration sensor measurement, control unit sends the first signal to the pressure
Contracting machine sends second signal to first valve and makes interior to close indoor-unit cooling-medium feed line to be switched to refrigeration mode
The flammable refrigerant of the pressure difference of machine and outdoor unit extraction indoor unit the flammable refrigerant to be focused in outdoor unit pipeline,
Exceed predetermined concentration value in response to the pressure of pressure sensor measurement, control unit sends third signal to the pressure
The flammable refrigerant of contracting machine extraction indoor unit the flammable refrigerant to be focused in outdoor unit pipeline,
It is less than predetermined concentration value in response to the pressure of pressure sensor measurement, control unit sends fourth signal to the second valve
To close indoor-unit cooling-medium outflow pipeline.
In the control device, the first valve and/or the second valve are solenoid valve, and described device further includes connection control unit
Buzzer, exceed predetermined concentration value in response to the concentration of concentration sensor measurement, control unit sends fourth signal to buzzing
Device, so that buzzer sounds an alarm.
According to another aspect of the present invention, a kind of air conditioner includes the control device of the flammable secondary refrigerant leakage.
Real-time detection combustibility secondary refrigerant leakage of the present invention is simultaneously alarmed, and control panel opens automatic receipts liquid, prevents secondary refrigerant leakage from expanding
Reach kindling lower limit greatly, the security risks such as burning or explosion occur.Combustibility every first time interval measurement indoor unit is cold
Matchmaker's concentration is closed the refrigerant feed line of indoor set heat exchanger, is operated when the flammable refrigerant concentration exceeds predetermined concentration value
Compressor generates the pressure difference of indoor unit and outdoor unit to extract the flammable refrigerant of indoor unit out, and the flammable refrigerant is focused on
In outdoor unit pipeline, flammable secondary refrigerant leakage can be detected in time, significantly reduce the security risks risk such as burning or explosion, often
Pipeline inner pressure is flowed out every the refrigerant of the second time interval measurement indoor set heat exchanger, when refrigerant outflow pipeline inner pressure is super
Scheduled pressure value out executes first step, until refrigerant outflow pipeline inner pressure is less than or equal to scheduled pressure value, refrigerant stream
Enter pipeline, which ensure that refrigerant is collected completely, prevents the security risks such as raw burning or explosion.
The above description is only an overview of the technical scheme of the present invention, in order to make technological means of the invention clearer
Understand, reach the degree that those skilled in the art can be implemented in accordance with the contents of the specification, and in order to allow the present invention
Above and other objects, features and advantages can be more clearly understood, illustrated below with a specific embodiment of the invention
Explanation.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Below with reference to attached drawing, the invention will be further described:
Fig. 1 is the step schematic diagram according to the control method of the flammable secondary refrigerant leakage of one embodiment of the invention；
Fig. 2 is the flow diagram according to the control method of the flammable secondary refrigerant leakage of one embodiment of the invention.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
In order to better understand, Fig. 1 is the control method of flammable secondary refrigerant leakage according to an embodiment of the invention
Step schematic diagram, as shown in Figure 1, a kind of control method of combustibility secondary refrigerant leakage includes the following steps,
First step, every the flammable refrigerant concentration of first time interval measurement indoor unit, when the flammable refrigerant
Concentration exceeds predetermined concentration value, closes the refrigerant feed line of indoor set heat exchanger, and operating compressor generates indoor unit and outdoor
The pressure difference of machine is focused on the flammable refrigerant in outdoor unit pipeline with extracting the flammable refrigerant of indoor unit out,
Second step, the refrigerant every the second time interval measurement indoor set heat exchanger flows out pipeline inner pressure, when described
Refrigerant flows out pipeline inner pressure and exceeds scheduled pressure value, executes first step, until refrigerant outflow pipeline inner pressure is less than
Equal to scheduled pressure value,
Third step closes refrigerant and flows out pipeline, finally shuts down.
In the control method preferred embodiment of the flammable secondary refrigerant leakage, first step is arranged in indoor unit bottom
The flammable refrigerant concentration that motor spindle deposits in concentration sensor measuring chamber on seat, the predetermined concentration value is less than flammable
Property refrigerant catch fire least concentration, when the flammable refrigerant concentration exceeds predetermined concentration value, send alarm and be simultaneously switched to refrigeration mould
Formula.In the control method of the flammable secondary refrigerant leakage, first step, the first time interval is 10 minutes, described pre-
/ 5th that concentration value is flammable refrigerant kindling least concentration are determined, when the flammable refrigerant concentration exceeds predetermined concentration
Value, control unit send alarm command to buzzer, and buzzer sounds an alarm, and air-conditioning is switched to refrigeration mode, turns off interior
The refrigerant feed line of machine heat exchanger, operating compressor generate the pressure difference of indoor unit and outdoor unit to extract the combustibility of indoor unit out
Refrigerant focuses on the flammable refrigerant in outdoor unit pipeline.
In the control method preferred embodiment of the flammable secondary refrigerant leakage, it is cold to be mounted on indoor unit for second step
For first solenoid closure of matchmaker's feed line to close indoor-unit cooling-medium feed line, operating compressor extracts the flammable of indoor unit out
Property refrigerant is sent in the condenser and system pipeline of outdoor unit.
In the control method preferred embodiment of the flammable secondary refrigerant leakage, it is cold to be arranged in indoor unit for third step
The pressure sensor that matchmaker flows out pipeline flows out pipeline inner pressure every 5 seconds measurement indoor-unit cooling-mediums, when the refrigerant flows out pipeline
Interior pressure exceeds 0.1Mpa, executes second step, until refrigerant outflow pipeline inner pressure is less than or equal to 0.1Mpa to terminate
It is automatic to receive liquid.
In the control method preferred embodiment of the flammable secondary refrigerant leakage, third step, every between the second time
Pipeline inner pressure is flowed out every measurement indoor-unit cooling-medium, when refrigerant outflow pipeline inner pressure exceeds atmospheric pressure, execution second
Step, until refrigerant outflow pipeline inner pressure is less than atmospheric pressure to terminate to receive liquid automatically.
In the control method preferred embodiment of the flammable secondary refrigerant leakage, four steps, indoor-unit cooling-medium outflow
Pipeline is equipped with second solenoid valve, is closed second solenoid valve to close indoor-unit cooling-medium outflow pipeline, finally stops compressor.
For a further understanding of the present invention, Fig. 2 is the control according to the flammable secondary refrigerant leakage of one embodiment of the invention
The flow diagram of method, in one embodiment, it is contemplated that refrigerant density ratio air is big, and when leakage is easy heavy in interior motor spindle
The leak sensor of product, detection refrigerant concentration is mounted on interior machine base.The every a min of leak sensor (default 10min) record
One time refrigerant concentration A, B are that refrigerant catches fire least concentration (LFL).
If continuing every 10min and recording a refrigerant concentration A 1. A < 0.2*B,
2. if A >=0.2*B, leak sensor feeds back leakage signal to control panel.It is (big that control panel sends instructions to buzzer
There is machine in majority) alarm, while opening automatic receipts liquid mode.Detailed process is as follows:
1. control panel sends instruction and forces to be switched to refrigeration mode.
2. compressor operation, the solenoid valve 1 (open type, the only closing when detecting leakage) for being mounted on interior machine air inlet pipe is closed
It closes, extracts interior machine refrigerant out using the inside and outside machine pressure difference that compressor provides, refrigerant is allowed to concentrate on (condenser and system in outer machine pipeline
Pipeline).
3. being monitored (interior machine to indoor overpressure by the pressure sensor installed on interior machine (row) tracheae
Pressure difference is small in pipeline, and some pressure values can represent machine loine pressure in entire).The every b s of pressure sensor (default 5s) record one
Secondary interior machine (row) intratracheal pressure C.
If C >=0.1Mpa (interior machine refrigerant pressure > atmospheric pressure, air-conditioning internal machine refrigerant are still being revealed), continue every 5s record
Machine outlet overpressure C in primary, and continue 2. step,
If C < 0.1MPa (prevents from drawing air into air-conditioning system, interior machine refrigerant pressure < atmospheric pressure, air can be into
Enter air-conditioning system), pressure sensor feedback receipts liquid completes signal to control panel, and control panel sends instruction and closes interior machine (row) tracheae
On solenoid valve 2 (open type), finally shut down.
According to another aspect of the present invention, a kind of control device of flammable secondary refrigerant leakage includes,
Compressor,
Concentration sensor is arranged on indoor machine base, and the concentration sensor is every first time interval measuring chamber
The flammable refrigerant concentration of interior motor spindle deposition,
Pressure sensor is arranged in indoor-unit cooling-medium outflow pipeline, and the pressure sensor is every the second time interval
It measures indoor-unit cooling-medium and flows out pipeline inner pressure,
First valve, the first valve for being configured to on-off indoor-unit cooling-medium feed line are mounted on indoor-unit cooling-medium feed line
On,
Second valve, the second valve for being configured to on-off indoor-unit cooling-medium outflow pipeline are mounted on indoor-unit cooling-medium outflow pipeline
On,
Control unit is electrically connected the concentration sensor, pressure sensor, the compressor, the first valve and
Two valves,
Exceed predetermined concentration value in response to the concentration of concentration sensor measurement, control unit sends the first signal to the pressure
Contracting machine sends second signal to first valve and makes interior to close indoor-unit cooling-medium feed line to be switched to refrigeration mode
The flammable refrigerant of the pressure difference of machine and outdoor unit extraction indoor unit the flammable refrigerant to be focused in outdoor unit pipeline,
Exceed predetermined concentration value in response to the pressure of pressure sensor measurement, control unit sends third signal to the pressure
The flammable refrigerant of contracting machine extraction indoor unit the flammable refrigerant to be focused in outdoor unit pipeline,
It is less than predetermined concentration value in response to the pressure of pressure sensor measurement, control unit sends fourth signal to the second valve
To close indoor-unit cooling-medium outflow pipeline.
In the control device preferred embodiment, the first valve and/or the second valve are solenoid valve, and described device further includes connecting
The buzzer for connecing control unit exceeds predetermined concentration value in response to the concentration of concentration sensor measurement, and control unit sends the 4th
Signal is to buzzer, so that buzzer sounds an alarm.
In the control device preferred embodiment, as 1 concentration sensor of leak sensor is mounted on interior machine base
On.Further, in pipeline weld, concentration sensor is arranged in pipeline pad neighbouring position for general leak point.
In the control device preferred embodiment, compressor can be frequency-changeable compressor.
In the control device preferred embodiment, the flammable refrigerant of the pressure difference extraction indoor unit of indoor unit and outdoor unit
The flammable refrigerant is focused on condenser and system pipeline.
In the control device preferred embodiment, pressure sensor is mounted on interior machine tracheae, and when refrigeration, refrigerant is from liquid
Pipe air inlet pipe goes out.
According to another aspect of the present invention, a kind of air conditioner includes the control device of the flammable secondary refrigerant leakage.
The above, only presently preferred embodiments of the present invention not do limitation in any form to the present invention.It is any ripe
Those skilled in the art is known, without departing from the scope of the technical proposal of the invention, all using technology contents described above
Many possible changes and modifications or equivalent example modified to equivalent change are made to technical solution of the present invention.Therefore, all
It is the content without departing from technical solution of the present invention, any change modification made to the above embodiment of technology according to the present invention,
Equivalent variations and modification belong to the protection scope of the technical program.
Claims (10)
1. a kind of control method of combustibility secondary refrigerant leakage comprising following steps,
First step, every the flammable refrigerant concentration of first time interval measurement indoor unit, when the flammable refrigerant concentration
Beyond predetermined concentration value, the refrigerant feed line of indoor set heat exchanger is closed, operating compressor generates indoor unit and outdoor unit
Pressure difference is focused on the flammable refrigerant in outdoor unit pipeline with extracting the flammable refrigerant of indoor unit out,
Second step, the refrigerant every the second time interval measurement indoor set heat exchanger flows out pipeline inner pressure, when the refrigerant
It flows out pipeline inner pressure and exceeds scheduled pressure value, execute first step, until refrigerant outflow pipeline inner pressure is less than or equal to
Scheduled pressure value,
Third step closes refrigerant and flows out pipeline, finally shuts down.
2. the control method of combustibility secondary refrigerant leakage as described in claim 1, wherein first step is arranged in indoor unit bottom
The flammable refrigerant concentration that motor spindle deposits in concentration sensor measuring chamber on seat, the predetermined concentration value is less than flammable
Property refrigerant catch fire least concentration, when the flammable refrigerant concentration exceeds predetermined concentration value, send alarm and be simultaneously switched to refrigeration mould
Formula, turns off the refrigerant feed line of indoor set heat exchanger, and operating compressor generates the pressure difference of indoor unit and outdoor unit to extract out
The flammable refrigerant of indoor unit focuses on the flammable refrigerant in outdoor unit pipeline.
3. the control method of combustibility secondary refrigerant leakage as claimed in claim 2, wherein first step, between the first time
It is divided into 10 minutes, the predetermined concentration value is 1/5th of flammable refrigerant kindling least concentration, when the flammable refrigerant
Concentration exceeds predetermined concentration value, and control unit sends alarm command to buzzer, and buzzer sounds an alarm, and air-conditioning is switched to refrigeration
Mode.
4. the control method of combustibility secondary refrigerant leakage as described in claim 1, wherein it is cold to be mounted on indoor unit for second step
For first solenoid closure of matchmaker's feed line to close indoor-unit cooling-medium feed line, operating compressor extracts the flammable of indoor unit out
Property refrigerant is sent in the condenser and system pipeline of outdoor unit.
5. the control method of combustibility secondary refrigerant leakage as described in claim 1, wherein it is cold to be arranged in indoor unit for third step
The pressure sensor that matchmaker flows out pipeline flows out pipeline inner pressure every 5 seconds measurement indoor-unit cooling-mediums, when the refrigerant flows out pipeline
Interior pressure exceeds 0.1Mpa, executes second step, until refrigerant outflow pipeline inner pressure is less than or equal to 0.1Mpa to terminate
It is automatic to receive liquid.
6. the control method of combustibility secondary refrigerant leakage as described in claim 1, wherein third step, every between the second time
Pipeline inner pressure is flowed out every measurement indoor-unit cooling-medium, when refrigerant outflow pipeline inner pressure exceeds atmospheric pressure, execution second
Step, until refrigerant outflow pipeline inner pressure is less than atmospheric pressure to terminate to receive liquid automatically.
7. the control method of combustibility secondary refrigerant leakage as described in claim 1, wherein four steps, indoor-unit cooling-medium outflow
Pipeline is equipped with second solenoid valve, is closed second solenoid valve to close indoor-unit cooling-medium outflow pipeline, finally stops compressor.
8. a kind of control device of combustibility secondary refrigerant leakage comprising,
Compressor,
Concentration sensor is arranged on indoor machine base, and the concentration sensor measures indoor unit every first time interval
The flammable refrigerant concentration of bottom deposit,
Pressure sensor is arranged in indoor-unit cooling-medium outflow pipeline, and the pressure sensor is every the second time interval measurement
Indoor-unit cooling-medium flows out pipeline inner pressure,
First valve, the first valve for being configured to on-off indoor-unit cooling-medium feed line are mounted in indoor-unit cooling-medium feed line,
Second valve, the second valve for being configured to on-off indoor-unit cooling-medium outflow pipeline are mounted on indoor-unit cooling-medium effuser road,
Control unit is electrically connected the concentration sensor, pressure sensor, the compressor, the first valve and the second valve,
Exceed predetermined concentration value in response to the concentration of concentration sensor measurement, control unit sends the first signal to the compressor
To be switched to refrigeration mode, send second signal closed to first valve indoor-unit cooling-medium feed line make indoor unit and
The flammable refrigerant of the pressure difference extraction indoor unit of outdoor unit the flammable refrigerant to be focused in outdoor unit pipeline,
Exceed predetermined concentration value in response to the pressure of pressure sensor measurement, control unit sends third signal to the compressor
The flammable refrigerant of indoor unit is extracted out to focus on the flammable refrigerant in outdoor unit pipeline,
It is less than predetermined concentration value in response to the pressure of pressure sensor measurement, control unit sends fourth signal to the second valve to close
Close indoor-unit cooling-medium outflow pipeline.
9. control device as claimed in claim 8, wherein the first valve and/or the second valve are solenoid valve, and described device further includes
The buzzer for connecting control unit exceeds predetermined concentration value in response to the concentration of concentration sensor measurement, and control unit sends the
Four signals are to buzzer, so that buzzer sounds an alarm.
10. a kind of air conditioner comprising the control device of combustibility secondary refrigerant leakage as claimed in claim 8 or 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811512208.6A CN109708247A (en) | 2018-12-11 | 2018-12-11 | A kind of control method, control device and the air conditioner of combustibility secondary refrigerant leakage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811512208.6A CN109708247A (en) | 2018-12-11 | 2018-12-11 | A kind of control method, control device and the air conditioner of combustibility secondary refrigerant leakage |
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| CN110469951A (en) * | 2019-08-19 | 2019-11-19 | 青岛海尔空调器有限总公司 | A kind of control method of air conditioner, storage medium and air conditioner |
| CN110486884A (en) * | 2019-08-19 | 2019-11-22 | 青岛海尔空调器有限总公司 | A kind of air conditioner, control method and storage medium |
| CN110715399A (en) * | 2019-10-21 | 2020-01-21 | 广东美的制冷设备有限公司 | Detection method and device for sensor in air conditioner, air conditioner and electronic equipment |
| CN111720950A (en) * | 2020-05-19 | 2020-09-29 | 青岛海尔空调器有限总公司 | Control method for reducing indoor side refrigerant leakage of air conditioner and air conditioner |
| CN112503720A (en) * | 2020-12-08 | 2021-03-16 | 合肥美的暖通设备有限公司 | Refrigerant leakage protection method, air conditioning equipment and readable storage medium |
| CN113483457A (en) * | 2021-07-07 | 2021-10-08 | 珠海拓芯科技有限公司 | Air conditioner operation control method, air conditioner and readable storage medium |
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| CN111720950A (en) * | 2020-05-19 | 2020-09-29 | 青岛海尔空调器有限总公司 | Control method for reducing indoor side refrigerant leakage of air conditioner and air conditioner |
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| CN113483457A (en) * | 2021-07-07 | 2021-10-08 | 珠海拓芯科技有限公司 | Air conditioner operation control method, air conditioner and readable storage medium |
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Application publication date: 20190503 |