CN-121993891-A - Control method, control device, air conditioner and storage medium

CN121993891ACN 121993891 ACN121993891 ACN 121993891ACN-121993891-A

Abstract

The invention discloses a control method, a control device, an air conditioner and a storage medium. The air conditioner comprises a compressor, a four-way valve, an outdoor heat exchanger, a control valve, an indoor heat exchanger and an indoor fan, wherein the four-way valve is communicated with the compressor, the indoor heat exchanger and the outdoor heat exchanger, the control valve is arranged at the refrigerant upstream of the indoor heat exchanger, the control method comprises the steps of controlling the indoor fan to operate and controlling the control valve to be conducted when the air conditioner is started, and controlling the control valve to be disconnected when the air conditioner is shut down. According to the control method of the air conditioner, the refrigerant sensor is omitted so as to reduce cost, and meanwhile, the safety risk caused by the fact that the concentration of the indoor leaked refrigerant is too high is avoided to a certain extent.

Inventors

MO YIYANG
JIN WENRUI
PAN ZHONGYU
HE YANLIN
LAI XUDONG
WU KONGXIANG

Assignees

广东美的暖通设备有限公司
美的集团股份有限公司

Dates

Publication Date: 20260508
Application Date: 20241105

Claims (12)

1. The control method of the air conditioner is characterized in that the air conditioner comprises a compressor, a four-way valve, an outdoor heat exchanger, a control valve, an indoor heat exchanger and an indoor fan, wherein the four-way valve is communicated with the compressor, the indoor heat exchanger and the outdoor heat exchanger, and the control valve is arranged at the refrigerant upstream of the indoor heat exchanger; The control method comprises the following steps: When the air conditioner is started, controlling the indoor fan to operate and the control valve to be conducted; And under the condition that the air conditioner is shut down, controlling the control valve to be disconnected.
2. The control method according to claim 1, wherein the control valve is provided between the indoor heat exchanger and the outdoor heat exchanger, the control valve being provided upstream of a refrigerant of the indoor heat exchanger in a case where the air conditioner is in a cooling mode; controlling the control valve to be opened when the air conditioner is in a shutdown state comprises: And under the condition that a shutdown instruction is received, when the current mode of the air conditioner is a heating mode, controlling the air conditioner to be switched into a refrigerating mode, and then controlling the control valve to be disconnected.
3. The control method according to claim 1, wherein the control valve is provided between the indoor heat exchanger and the four-way valve, the control valve being provided upstream of a refrigerant of the indoor heat exchanger in a case where the air conditioner is in a heating mode; controlling the control valve to be opened when the air conditioner is in a shutdown state comprises: And under the condition that a shutdown instruction is received, when the current mode of the air conditioner is a refrigeration mode, controlling the air conditioner to be switched into a heating mode, and then controlling the control valve to be disconnected.
4. The control method according to claim 1, wherein the air conditioner includes a check valve connected to the compressor, the check valve being configured to prevent a refrigerant from flowing back to the compressor or the four-way valve.
5. The control method according to claim 4, wherein controlling the control valve to be opened in a case where the air conditioner is shut down comprises: And after the air conditioner is switched from starting to standby for a preset time, the control valve is controlled to be disconnected.
6. The control method according to claim 5, wherein the preset time period is longer than or equal to a pressure balance minimum time period and is shorter than or equal to a safety time period, the safety time period being determined based on an indoor allowable maximum leakage amount, a total refrigerant amount, a refrigerant full leakage maximum time period, a refrigerant leakage acceleration coefficient, a content between the control valve and the check valve, and an inner volume of the air conditioner.
7. The control method according to claim 5, wherein the preset time period is greater than or equal to 0 seconds and less than or equal to 120 seconds.
8. The control method according to claim 1, wherein the control valve is provided on a side close to the indoor heat exchanger.
9. The control method according to claim 1, wherein the air conditioner includes a low pressure tank connecting the four-way valve and the compressor.
10. A control apparatus, characterized by comprising: A processor, and; A memory storing a computer program which, when executed by the processor, implements the steps of the control method of any one of claims 1-9.
11. An air conditioner comprising the control device of claim 10.
12. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the control method according to any one of claims 1-9.

Description

Control method, control device, air conditioner and storage medium Technical Field The present invention relates to the field of air conditioning technologies, and in particular, to a control method, a control device, an air conditioner, and a computer storage medium. Background In the related art, an air conditioner is provided with a combustible refrigerant. The air conditioner needs to be provided with a refrigerant sensor at the indoor side so as to ensure that the inner fan can be found and started in time when the refrigerant leaks, and the refrigerant is prevented from accumulating to exceed the combustible concentration. However, the installation of the refrigerant sensor and the corresponding associated hardware is expensive, which results in a relatively high cost of the system. Disclosure of Invention The embodiment of the invention provides a control method, a control device, an air conditioner and a computer storage medium. To solve at least one technical problem as described above. The embodiment of the invention provides a control method of an air conditioner. The air conditioner comprises a compressor, a four-way valve, an outdoor heat exchanger, a control valve, an indoor heat exchanger and an indoor fan, wherein the four-way valve is communicated with the compressor, the indoor heat exchanger and the outdoor heat exchanger, and the control valve is arranged at the refrigerant upstream of the indoor heat exchanger; The control method comprises the following steps: When the air conditioner is started, controlling the indoor fan to operate and the control valve to be conducted; And under the condition that the air conditioner is shut down, controlling the control valve to be disconnected. According to the control method of the air conditioner, the control valve is arranged at the refrigerant upstream of the indoor heat exchanger, the operation of the indoor fan is controlled to be conducted with the control valve under the condition that the air conditioner is started, so that the refrigerant leaked from the indoor can not gather under the action of the indoor fan, the combustible risk is reduced to a certain extent, and the control valve is disconnected under the condition that the air conditioner is shut down, so that the amount of refrigerant leaked from the indoor is reduced, and the safety risk caused by the fact that the concentration of the refrigerant leaked from the indoor is too high is avoided to a certain extent while the refrigerant sensor is omitted to reduce the cost. In some embodiments, the control valve is disposed between the indoor heat exchanger and the outdoor heat exchanger, the control valve being disposed upstream of a refrigerant of the indoor heat exchanger when the air conditioner is in a cooling mode; controlling the control valve to be opened when the air conditioner is in a shutdown state comprises: And under the condition that a shutdown instruction is received, when the current mode of the air conditioner is a heating mode, controlling the air conditioner to be switched into a refrigerating mode, and then controlling the control valve to be disconnected. In some embodiments, the control valve is disposed between the indoor heat exchanger and the four-way valve, the control valve being disposed upstream of the refrigerant of the indoor heat exchanger when the air conditioner is in a heating mode; controlling the control valve to be opened when the air conditioner is in a shutdown state comprises: and when a shutdown instruction is received and the current mode of the air conditioner is a refrigeration mode, controlling the air conditioner to be switched to a heating mode, and then controlling the control valve to be disconnected. In some embodiments, the air conditioner includes a check valve that is configured to prevent refrigerant from flowing back to the compressor or the four-way valve. In some embodiments, controlling the control valve to open when the air conditioner is shut down comprises: And after the air conditioner is switched from starting to standby for a preset time, the control valve is controlled to be disconnected. In some embodiments, the preset time period is greater than or equal to a pressure balance minimum time period and less than or equal to a safety time period, wherein the safety time period is determined according to an indoor allowable maximum leakage amount, a total refrigerant amount, a refrigerant full leakage maximum time period, a refrigerant leakage acceleration coefficient, an inner volume between the control valve and the check valve, and an inner volume of the air conditioner. In certain embodiments, the predetermined time period is greater than or equal to 0 seconds and less than or equal to 120 seconds. In some embodiments, the control valve is disposed on a side proximate to the indoor heat exchanger. In some embodiments, the air conditioner includes a low pressure tank connecting the four-way valve and the compressor.