Air conditioner and control method therefor, and computer readable storage medium

Abstract

Provided are an air conditioner and a control method therefor, and a computer readable storage medium. The air conditioner comprises an indoor unit (10) and a refrigerant leakage measuring device (20). The refrigerant leakage measuring device (20) is used for measuring the content of the leaked refrigerant of the air conditioner. The indoor unit (10) comprises an indoor fan (11). The control method comprises: in response to a refrigerant leakage measuring device (20) recognizing an abnormal condition, controlling an indoor fan (11) to alternately operate on the basis of different airflow speeds, wherein the abnormal condition comprises: refrigerant leakage of the air conditioner; and / or, malfunction of the refrigerant leakage measuring device (20).

Description

Air conditioner and control method thereof, and computer readable storage medium

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to Chinese patent application No. 2023110427426, filed on August 17, 2023, entitled “AIR CONDITIONER AND CONTROL METHOD THEREOF, COMPUTER-READABLE STORAGE MEDIUM,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to the technical field of household appliances, and in particular to a control method for an air conditioner, a computer-readable storage medium, and an air conditioner. Background Art

[0004] For environmental considerations, refrigerants with good environmental properties have been vigorously promoted and applied in refrigeration, such as R290, R32, R454B, etc. However, these refrigerants are flammable and pose safety risks when used.

[0005] In the related art, when a refrigerant leak is detected, a fault message is issued to remind the customer of the leakage of the flammable refrigerant, for example, by displaying a fault code or making a beeping sound to remind the customer of the refrigerant leak. However, this reminder method has certain limitations and the reminder effect is not good.

[0006] Public content

[0007] The present disclosure aims to at least partially resolve one of the technical problems in the related art. To this end, the first object of the present disclosure is to provide a control method for an air conditioner, which determines whether a refrigerant leak has occurred in the air conditioner based on the refrigerant content of the air conditioner, thereby ensuring the accuracy of the refrigerant leak detection. At the same time, when a refrigerant leak occurs in the air conditioner and / or a refrigerant leak detection device malfunctions, the method controls the indoor fan to alternately operate at different wind speeds, causing the customer to experience changes in the wind speed, air volume, indoor fan air supply noise, and other physical sensations, thereby effectively alerting the customer.

[0008] A second object of the present disclosure is to provide a computer-readable storage medium.

[0009] The third object of the present disclosure is to provide an air conditioner.

[0010] A fourth object of the present disclosure is to provide an air conditioner.

[0011] To achieve the above-mentioned objectives, an embodiment of the first aspect of the present disclosure proposes a control method for an air conditioner, wherein the air conditioner includes an indoor unit and a refrigerant leakage detection device, the refrigerant leakage detection device is used to detect the refrigerant content leaked from the air conditioner, and the indoor unit includes an indoor fan. The control method of the air conditioner includes: in response to the refrigerant leakage detection device identifying an abnormal condition, controlling the indoor fan to operate alternately at different wind speeds; wherein the abnormal condition includes: refrigerant leakage in the air conditioner; and / or, a malfunction of the refrigerant leakage detection device.

[0012] According to the control method for an air conditioner according to an embodiment of the present disclosure, the air conditioner includes an indoor unit and a refrigerant leak detection device, the refrigerant leak detection device being used to detect the amount of refrigerant leaking from the air conditioner, and the indoor unit including an indoor fan. In response to the refrigerant leak detection device identifying an abnormal condition, the method controls the indoor fan to alternately operate at different wind speeds. The abnormal condition includes: a refrigerant leak in the air conditioner; and / or a malfunction of the refrigerant leak detection device. Thus, the method determines whether a refrigerant leak has occurred in the air conditioner based on the refrigerant content in the air conditioner, ensuring the accuracy of refrigerant leak detection. Furthermore, when a refrigerant leak occurs in the air conditioner and / or a malfunction occurs in the refrigerant leak detection device, the method controls the indoor fan to alternately operate at different wind speeds, causing the customer to experience changes in physical sensations such as wind speed, air volume, and indoor fan air supply noise, thereby effectively alerting the customer.

[0013] In addition, the air conditioner control method according to the above embodiment of the present disclosure may also have the following additional technical features:

[0014] According to one embodiment of the present disclosure, the indoor fan is controlled to operate alternately at different wind speeds, including: when the abnormal condition is a refrigerant leakage in the air conditioner, the indoor fan is controlled to operate alternately at a first preset speed and a second preset speed, wherein the first preset speed is greater than the second preset speed; when the abnormal condition is a malfunction of the refrigerant leakage detection device, the indoor fan is controlled to operate alternately at a third preset speed and a fourth preset speed, wherein the third preset speed is greater than the fourth preset speed; wherein the first preset speed is different from the third preset speed; and / or the second preset speed is different from the fourth preset speed.

[0015] According to one embodiment of the present disclosure, when the abnormal condition is refrigerant leakage in the air conditioner, before controlling the indoor fan to operate alternately at different wind speeds, the control method of the air conditioner further includes: controlling the indoor fan to operate to discharge the leaked refrigerant in the indoor unit.

[0016] According to one embodiment of the present disclosure, the operation of the indoor fan is controlled to discharge the refrigerant leaked in the indoor unit, including: controlling the indoor fan to operate at a fifth preset speed for a first preset time; in response to detecting that the refrigerant content in the indoor unit is greater than or equal to the first preset content and lasts for a first detection time, controlling the indoor fan to operate at the fifth preset speed for a second preset time; and, in response to detecting that the refrigerant content in the indoor unit is less than the first preset content and greater than or equal to the second preset content and lasts for a second detection time, controlling the indoor fan to operate at a sixth preset speed for a third preset time, wherein the sixth preset speed is less than the fifth preset speed; and, in response to detecting that the refrigerant content in the indoor unit is less than the second preset content and lasts for a third detection time, controlling the indoor fan to operate at a seventh preset speed for a fourth preset time, wherein the seventh preset speed is less than the sixth preset speed.

[0017] According to one embodiment of the present disclosure, after controlling the indoor fan to run at a fourth preset speed for a sixth preset time, the control method of the air conditioner further includes: in response to detecting that the refrigerant content of the indoor unit is greater than or equal to the first preset content and lasts for a first detection time, controlling the indoor fan to run at a fifth preset speed for a second preset time; and in response to detecting that the refrigerant content of the indoor unit is less than the first preset content and greater than or equal to the second preset content and lasts for a second detection time, controlling the indoor fan to run at a sixth preset speed for a third preset time; and in response to detecting that the refrigerant content of the indoor unit is less than the second preset content and lasts for a third detection time, first controlling the indoor fan to run at the sixth preset speed for the third preset time, and then controlling the indoor fan to run at the seventh preset speed for the fourth preset time.

[0018] According to one embodiment of the present disclosure, after controlling the indoor fan to run at a seventh preset speed for a fourth preset time, the control method of the air conditioner further includes: in response to detecting that the refrigerant content of the indoor unit is greater than or equal to the first preset content and lasts for a first detection time, controlling the indoor fan to run at a fifth preset speed for a second preset time; in response to detecting that the refrigerant content of the indoor unit is less than the first preset content and greater than or equal to the second preset content and lasts for a second detection time, controlling the indoor fan to run at a sixth preset speed for a third preset time; in response to detecting that the refrigerant content of the indoor unit is less than the second preset content and lasts for a third detection time, determining that the discharge is completed.

[0019] According to an embodiment of the present disclosure, before controlling the indoor fan to operate alternately at different wind speeds, the method for controlling the air conditioner further includes: controlling the air conditioner to operate in an air supply mode.

[0020] To achieve the above-mentioned purpose, a second embodiment of the present disclosure proposes a computer-readable storage medium on which a control program for an air conditioner is stored. When the control program for the air conditioner is executed by a processor, the above-mentioned control method for the air conditioner is implemented.

[0021] According to the computer-readable storage medium of the embodiment of the present disclosure, the above-mentioned air conditioner control method is implemented when the air conditioner control program stored thereon is executed by the processor. Based on the above-mentioned air conditioner control method, the accuracy of refrigerant leakage detection is guaranteed. At the same time, when a refrigerant leak occurs in the air conditioner and / or a refrigerant leakage detection device malfunctions, the indoor fan is controlled to operate alternately at different wind speeds, so that the customer will have changes in physical perception of wind speed, air volume, indoor fan air supply noise, etc., thereby achieving the purpose of effectively reminding the customer.

[0022] To achieve the above-mentioned purpose, the third aspect embodiment of the present disclosure proposes an air conditioner, including a memory, a processor, and an air conditioner control program stored in the memory and runnable on the processor. When the processor executes the air conditioner control program, the above-mentioned air conditioner control method is implemented.

[0023] According to the air conditioner of the embodiment of the present disclosure, the control program of the air conditioner is executed by the processor to implement the above-mentioned control method of the air conditioner. Based on the above-mentioned control method of the air conditioner, the accuracy of refrigerant leakage detection is guaranteed. At the same time, when a refrigerant leak occurs in the air conditioner and / or a malfunction occurs in the refrigerant leakage detection device, the indoor fan is controlled to operate alternately at different wind speeds, so that the customer will have changes in physical perception of wind speed, air volume, indoor fan air supply noise, etc., thereby achieving the purpose of effectively reminding the customer.

[0024] To achieve the above-mentioned objectives, an embodiment of the fourth aspect of the present disclosure proposes an air conditioner, comprising: an indoor unit and a refrigerant leakage detection device, the refrigerant leakage detection device being used to detect the refrigerant content leaked from the air conditioner, and the indoor unit comprising an indoor fan; a controller being used to control the indoor fan to operate alternately at different wind speeds in response to the refrigerant leakage detection device identifying an abnormal condition; wherein the abnormal condition includes: refrigerant leakage in the air conditioner; and / or a malfunction of the refrigerant leakage detection device.

[0025] According to an embodiment of the air conditioner disclosed herein, the indoor unit includes an indoor fan, and a refrigerant leak detection device is used to detect the amount of refrigerant leaking from the air conditioner. In response to the refrigerant leak detection device identifying an abnormal condition, the controller controls the indoor fan to alternately operate at different wind speeds. The abnormal condition includes: a refrigerant leak in the air conditioner; and / or a malfunction of the refrigerant leak detection device. Thus, the air conditioner determines whether a refrigerant leak has occurred based on the refrigerant content in the air conditioner, ensuring the accuracy of refrigerant leak detection. Furthermore, when a refrigerant leak occurs in the air conditioner and / or the refrigerant leak detection device malfunctions, the controller controls the indoor fan to alternately operate at different wind speeds, causing the customer to experience changes in wind speed, air volume, and indoor fan air supply noise, thereby effectively alerting the customer.

[0026] Additional aspects and advantages of the present disclosure will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0028] FIG1 is a flow chart of a method for controlling an air conditioner according to an embodiment of the present disclosure;

[0029] FIG2 is a flow chart of a method for controlling an air conditioner according to a specific embodiment of the present disclosure;

[0030] FIG3 is a block diagram of an air conditioner according to an embodiment of the present disclosure;

[0031] FIG4 is a block diagram of an air conditioner according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0032] The following describes in detail embodiments of the present disclosure, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, and should not be construed as limiting the present disclosure.

[0033] The following describes a control method for an air conditioner, a computer-readable storage medium, and an air conditioner according to embodiments of the present disclosure with reference to the accompanying drawings.

[0034] FIG1 is a flowchart of a method for controlling an air conditioner according to an embodiment of the present disclosure.

[0035] In one embodiment of the present application, an air conditioner includes an indoor unit and a refrigerant leakage detection device, the refrigerant leakage detection device is used to detect the amount of refrigerant leaked from the air conditioner, and the indoor unit includes an indoor fan.

[0036] An air conditioner is an air conditioning system with a complete refrigeration cycle and includes at least one refrigerant leak detection device. This device, developed based on the characteristics of refrigerant, can detect the amount of flammable refrigerant. It can consist of a refrigerant concentration sensor, a mainboard, and connecting cables. The refrigerant leak detection device uses the refrigerant concentration sensor to measure the refrigerant concentration at the installation location and then feeds the detected refrigerant concentration back to the air conditioner controller.

[0037] Specifically, the refrigerant leak detection device can be installed near the welded gas-liquid piping of the air conditioner's heat exchanger, depending on the heat exchanger structure. This is where the risk of refrigerant leakage is greatest. If a refrigerant leak occurs, the refrigerant leak detection device can quickly detect and provide feedback on concentration and other information. For example, the refrigerant leak detection device can be installed near the welded gas-liquid piping of the indoor heat exchanger of an indoor unit, thereby providing feedback on the refrigerant content in the indoor unit to determine whether a refrigerant leak has occurred. The refrigerant leak detection device can also be installed near the welded gas-liquid piping of the outdoor heat exchanger of an outdoor unit, thereby providing feedback on the refrigerant content in the outdoor unit to determine whether a refrigerant leak has occurred.

[0038] As shown in FIG1 , the control method of the air conditioner according to the embodiment of the present disclosure includes:

[0039] S1, in response to the refrigerant leakage detection device identifying an abnormal condition, controlling the indoor fan to operate alternately at different wind speeds; wherein the abnormal condition includes: refrigerant leakage in the air conditioner; and / or a malfunction of the refrigerant leakage detection device.

[0040] The refrigerant content is used to indicate the amount of refrigerant in the space where it is located. It can be the refrigerant concentration. By detecting the refrigerant content leaking from the air conditioner and performing real-time detection of whether the air conditioner has refrigerant leakage based on the refrigerant content, the refrigerant leakage detection accuracy can be improved, ensuring control accuracy.

[0041] Specifically, after the air conditioner is powered on, the refrigerant leak detection device acquires the refrigerant content and sends the acquired refrigerant content to the air conditioner controller. The air conditioner controller compares the acquired refrigerant content with a preset content threshold value L0. If the refrigerant leak detection device detects that the refrigerant content is less than the preset content threshold value L0, it indicates that there is no refrigerant leak. The air conditioner maintains its original state and operates according to the latest air conditioning instructions, if any. If the refrigerant content is determined to be greater than or equal to the preset content threshold value L0, the air conditioner is deemed to have a refrigerant leak, and the indoor fan is controlled to operate at different speeds. For example, the indoor fan can be controlled to operate at maximum speed for time t1, then at minimum speed for time t2, and so on. This can alert customers to refrigerant leaks through periodic changes in wind speed, air volume, and indoor fan noise. It should be noted that in addition to the above-mentioned judgment conditions that the air conditioner is considered to have a refrigerant leak when the refrigerant content is greater than or equal to the preset content threshold L0; and the air conditioner is considered to have no refrigerant leak when the refrigerant content is less than the preset content threshold L0, the air conditioner can also be considered to have a refrigerant leak when the refrigerant content is greater than or equal to the preset content threshold L0 and lasts for t detection time, otherwise it is considered that the air conditioner has no refrigerant leak. There is no restriction here.

[0042] In addition, in addition to the refrigerant content detection function, the refrigerant leak detection device also has a self-test function for life and detection functions. When the refrigerant leak detection device does not have a life warning or detection function failure, it means that the refrigerant leak detection device is operating normally, and the air conditioner maintains its original state. If there is a latest air conditioning instruction, it will operate according to the latest air conditioning instruction. When the refrigerant leak detection device self-tests and finds a life warning or detection function failure, it will feedback the corresponding information to the air conditioning controller. The air conditioning controller determines that the refrigerant leak detection device has an abnormality, and then controls the indoor fan to run alternately at different wind speeds to provide a device abnormality reminder. For example, after determining that the refrigerant leak detection device has an abnormality, the air conditioning controller can first control the indoor fan to run at the maximum wind speed for t2 time, and then run at the minimum wind speed for t1 time, and then alternately run in sequence, so as to remind customers to pay attention to the functional failure of the refrigerant leak detection device through periodic changes in wind speed, air volume and indoor fan noise.

[0043] It should be noted that in order to distinguish between refrigerant leakage reminders and device abnormality reminders, different maximum wind speeds, minimum wind speeds, or durations of corresponding wind speeds can be set to distinguish the reminders. Assume that when a refrigerant leak occurs in the air conditioner, the first control strategy is used to control the indoor fan, and when an abnormality occurs in the refrigerant leak detection device, the second control strategy is used to control the indoor fan. Then, when a refrigerant leak occurs in the air conditioner and an abnormality occurs in the refrigerant leak detection device at the same time, a target cycle time can be set. For example, the first control strategy is first used for the indoor fan. After the target cycle time, the second control strategy is used to control the indoor fan, and the cycle continues in sequence. For example, the abnormalities of the refrigerant leakage detection device may include life abnormalities, detection function abnormalities, etc. It can be understood that when the refrigerant leakage detection device only has a life abnormality, it will not affect the accuracy of the refrigerant content it obtains, and the normal operation of the refrigerant leakage function can still be guaranteed. Therefore, the refrigerant leakage detection device may have a life abnormality, and at the same time, it may be determined that the air conditioner has a refrigerant leakage based on the refrigerant content, that is, the air conditioner has a refrigerant leakage and the refrigerant leakage detection device has an abnormality at the same time.

[0044] In addition, if a refrigerant leak occurs in the air conditioner or an abnormality occurs in the refrigerant leak detection device, the air conditioner controller can also control the display of the corresponding fault code and sound an alarm, while also controlling the indoor fan to operate at different wind speeds to enhance the warning effect. For example, if a refrigerant leak is determined based on the refrigerant content, the air conditioner controller can control the indoor unit's display panel to display the fault code M0 indicating a refrigerant leak; if an abnormality occurs in the refrigerant leak detection device, the air conditioner controller can control the indoor unit's display panel to display the fault code F0 indicating a life alarm or detection fault. In addition, the fault code can also be displayed via a mobile terminal, which is not limited here.

[0045] Furthermore, in addition to the self-test function of the refrigerant leakage detection device, the refrigerant leakage detection device can also be monitored in real time based on external detection modules such as a voltage detection module, a current detection module, a timing module, etc., and the real-time monitoring data obtained can be fed back to the air-conditioning controller. The air-conditioning controller determines whether the refrigerant leakage detection device has an abnormality based on the obtained monitoring data.

[0046] In one embodiment of the present application, when it is determined based on the refrigerant content that the air conditioner has a refrigerant leak and / or the refrigerant leak detection device has an abnormality, the control method of the air conditioner further includes: controlling the air outlet angle of the indoor unit to a preset angle.

[0047] That is, if a refrigerant leak occurs in the air conditioner or the refrigerant leak detection device malfunctions, the air outlet angle of the indoor fan is adjusted to a preset angle to ensure maximum airflow and improve the warning effect. The preset angle can be set according to actual conditions.

[0048] In one embodiment of the present application, when it is determined based on the refrigerant content that the air conditioner has a refrigerant leak and / or the refrigerant leakage detection device has an abnormality, the control method of the air conditioner further includes: controlling the air conditioner to operate in an air supply mode.

[0049] That is to say, when the air conditioner is in operation mode, if it is determined that the air conditioner has a refrigerant leak or the refrigerant leak detection device has an abnormality, the air conditioner is controlled to stop the current cooling, dehumidification, heating or electric auxiliary heating mode, and directly maintain or switch to the air supply mode. The cooling, dehumidification and heating modes are stopped or prohibited to ensure that the compressor stops running, so as to reduce the refrigerant circulation, slow down the degree of refrigerant leakage in the indoor unit, and reduce the concentration of the leaked refrigerant; the electric auxiliary heating operation is stopped to reduce the surface temperature of the leaked refrigerant.

[0050] When the air conditioner is in the standby mode, if it is determined that the air conditioner has a refrigerant leak and the refrigerant leak detection device has an abnormality, the air conditioner is directly controlled to operate in the air supply mode.

[0051] In one embodiment of the present application, the method for controlling the air conditioner further includes: detecting the amount of refrigerant leaked from the air conditioner by a refrigerant leakage detection device before and / or after the air conditioner is shut down.

[0052] Specifically, when the air conditioner is powered on but not turned on, the refrigerant leak detection device prioritizes self-tests of its lifespan and detection function, as well as its refrigerant content. This pre-startup self-test and refrigerant content check mitigates the risks associated with operating the air conditioner in the event of a refrigerant leak. Furthermore, when the air conditioner is turned off, the refrigerant leak detection device continues to perform self-tests of its lifespan and detection function, as well as its refrigerant content. In other words, the refrigerant leak detection device's lifespan warning, self-test, and refrigerant content check continue as long as the air conditioner is powered on.

[0053] In addition, the life warning, function self-test, refrigerant leakage detection and other data of the refrigerant leakage detection device will be cleared after the air conditioner is turned off or the power is cut off, and a new round of detection will be started after the air conditioner is powered on or restarted.

[0054] In one embodiment of the present application, controlling the indoor fan to alternately operate at different speeds includes: when the abnormal condition is a refrigerant leak in the air conditioner, controlling the indoor fan to alternately operate at a first preset speed R1 and a second preset speed R2, wherein the first preset speed R1 is greater than the second preset speed R2; when the abnormal condition is a malfunction of the refrigerant leak detection device, controlling the indoor fan to alternately operate at a third preset speed R3 and a fourth preset speed R4, wherein the third preset speed R3 is greater than the fourth preset speed R4; wherein the first preset speed R1 is different from the third preset speed R3; and / or the second preset speed R2 is different from the fourth preset speed R4. It is understood that the higher the speed of the indoor fan, the greater the wind speed; and the lower the speed, the lower the wind speed.

[0055] That is, if a refrigerant leak is confirmed in the air conditioner, the indoor fan is first controlled to run continuously for a preset time according to R1, then for a preset time according to R2, and so on. If a fault is confirmed in the refrigerant leak detection device, the indoor fan is first controlled to run continuously for a preset time according to R3, then for a preset time according to R4, and so on. This alerts the user to the alarm fault through periodic changes in wind speed, air volume, and indoor fan noise. Different wind speed settings also produce different periodic changes in wind speed, air volume, and indoor fan noise, achieving different alert effects, allowing users to promptly identify the fault type.

[0056] Furthermore, the first preset speed R1 can be the sum of the maximum speed Rmax of the indoor fan during normal operation of the air conditioner and the first speed ΔR1. The second preset speed R2 can be the difference between the minimum speed Rmin of the indoor fan during normal operation and the second speed ΔR2. The third preset speed R3 can be the sum of the maximum speed Rmax of the indoor fan during normal operation of the air conditioner and the first speed ΔR3. The fourth preset speed R4 can be the difference between the minimum speed Rmin of the indoor fan during normal operation and the second speed ΔR4. Thus, using the first preset speed R1 and the third preset speed R3, which are higher than the maximum speed Rmax of the indoor fan, can cause an abnormal increase in fan noise. These can then be alternating with the second preset speed R2 and the fourth preset speed R4, which are lower than the minimum speed Rmin of the indoor fan, to further highlight the variations in the indoor fan noise and, combined with changes in wind speed and air volume, enhance the warning effect.

[0057] In addition, in order to ensure the distinction between refrigerant leakage reminders and device fault abnormality reminders, in addition to distinguishing the speeds, different reminder effects can also be achieved by controlling the corresponding speed duration, so that users can confirm the corresponding fault type in time.

[0058] In one embodiment of the present application, when the abnormal condition is a refrigerant leakage in the air conditioner, before controlling the indoor fan to operate alternately at different wind speeds, the control method of the air conditioner also includes: controlling the indoor fan to operate to discharge the leaked refrigerant in the indoor unit.

[0059] Specifically, refrigerant leakage in the air conditioner may include refrigerant leakage in the outdoor unit and refrigerant leakage in the indoor unit. When a refrigerant leak occurs in the outdoor unit, the leaked refrigerant can be diffused in time under the action of outdoor air circulation, and the risk of combustion and explosion is relatively low. Therefore, in the case of a refrigerant leak in the outdoor unit, the indoor fan can be directly controlled to run alternately at different wind speeds to provide a refrigerant leak reminder. When a refrigerant leak occurs in the indoor unit, due to the closed nature of the indoor environment, the refrigerant diffusion effect is poor, and the accumulation of refrigerant in a certain area will bring a greater risk of combustion and explosion. Therefore, in the case of a refrigerant leak in the indoor unit, it is necessary to first discharge the leaked refrigerant in the indoor unit, and when the refrigerant content in the indoor unit meets the safety requirements, determine that the discharge is complete, and then control the indoor fan to run alternately at different wind speeds to provide a refrigerant leak reminder.

[0060] The following describes in detail the refrigerant discharge process when a refrigerant leak occurs in the air conditioner.

[0061] In one embodiment of the present application, the operation of the indoor fan is controlled to discharge the refrigerant leaked in the indoor unit, including: controlling the indoor fan to operate at a fifth preset speed R5 for a first preset time t1; in response to detecting that the refrigerant content in the indoor unit is greater than or equal to the first preset content L1 and lasts for a first detection time tdetect1, controlling the indoor fan to operate at the fifth preset speed R5 for a second preset time t2; and, in response to detecting that the refrigerant content in the indoor unit is less than the first preset content L1 and greater than or equal to the second preset content L2 and lasts for a second detection time tdetect2, controlling the indoor fan to operate at a sixth preset speed R6 for a third preset time t3, wherein the sixth preset speed R6 is less than the fifth preset speed R5; and, in response to detecting that the refrigerant content in the indoor unit is less than the second preset content L2 and lasts for a third detection time tdetect3, controlling the indoor fan to operate at a seventh preset speed R7 for a fourth preset time t4, wherein the seventh preset speed R7 is less than the sixth preset speed R6. Among them, the first preset content L1, the second preset content L2, the fifth preset speed R5, the sixth preset speed R6, the seventh preset speed R7, the first preset time t1, the second preset time t2, the third preset time t3, the fourth preset time t4, the first detection time t detection 1, the continuous second detection time t detection 2, and the third detection time t detection 3 can be set according to actual conditions, and the first detection time t detection 1, the continuous second detection time t detection 2, and the third detection time t detection 3 can also be zero.

[0062] Assume that when the refrigerant leakage detection device detects that the refrigerant content Ln in the indoor unit is L0 within the detection duration t, it is considered that a refrigerant leakage occurs in the indoor unit.

[0063] Specifically, when the refrigerant content Ln of the indoor unit is greater than or equal to L0 and the duration t is detected, it is determined that a refrigerant leak has occurred in the indoor unit. First, the indoor unit fan is controlled to continuously run at the fifth preset speed R5 for the first preset time t1 to forcefully disperse the leaked refrigerant and prevent refrigerant accumulation.

[0064] After the indoor unit fan continues to operate at the fifth preset speed R5 for the first preset time t1, the refrigerant content in the indoor unit is obtained, and a judgment is made based on the latest refrigerant content information to execute the following control process:

[0065] If the refrigerant content Ln≥L1 is continuously detected for t1 time, the indoor unit fan is controlled to maintain the fifth preset speed R5 to forcefully disperse the refrigerant and reduce the refrigerant content. After running for t2 time, the refrigerant content is judged based on the latest refrigerant content information and the corresponding control process is executed.

[0066] If the refrigerant content L2≤Ln<L1 is detected for a continuous detection time of t2, it is considered that the refrigerant content in the indoor unit is already in a relatively safe range, and the indoor fan is controlled to reduce the wind speed and run at the sixth preset speed R6. After running for t3 time, the refrigerant content is judged based on the latest refrigerant content information and the corresponding control process is executed.

[0067] If the refrigerant concentration Ln is detected to be less than L2 for a continuous detection time of t3, it is considered that the refrigerant content in the current indoor unit is already very thin, and the indoor fan is controlled to run at the seventh preset speed R7. After running for t4 time, the refrigerant content is judged based on the latest refrigerant content information and the corresponding control process is executed.

[0068] In one embodiment of the present application, the fifth preset speed R5 is the sum of the maximum speed Rmax of the indoor fan when the air conditioner is operating normally and the fifth speed ΔR5, the sixth preset speed R6 is the sum of the maximum speed Rmax of the indoor fan when the air conditioner is operating normally and the sixth speed ΔR6, and the seventh preset speed R7 is the difference between the minimum speed Rmin of the indoor fan when the air conditioner is operating normally and the seventh speed ΔR7, wherein the sixth speed ΔR6 is less than the fifth speed ΔR5, for example, the sixth speed ΔR6 can be half of the fifth speed ΔR5.

[0069] That is to say, when it is determined that a refrigerant leak has occurred in the indoor unit, and when the refrigerant content Ln ≥ L1 and continues to be detected for t1 time, the operating speed of the indoor fan is controlled to be increased by a certain speed based on the maximum speed Rmax of the indoor fan for a period of time to forcefully disperse the leaked refrigerant and prevent accumulation.

[0070] When the refrigerant content L2≤Ln<L1 and continues for t detection time 2, the operating speed of the indoor fan is continued to be controlled to increase the speed by a certain amount based on the maximum speed Rmax and continue to run for a period of time to continue to dissipate the refrigerant leakage.

[0071] When the refrigerant content Ln is less than L2 and continues for t detection time 3, the indoor fan is controlled to operate at a speed less than the minimum speed Rmin of the indoor fan to further determine whether the refrigerant content in the indoor unit will increase at a lower wind speed, thereby determining whether the refrigerant content is within a safe range and determining whether the refrigerant leakage in the indoor unit has been discharged.

[0072] In one embodiment of the present application, after controlling the indoor fan to run at the sixth preset speed R6 for the third preset time t3, the control method of the air conditioner also includes: in response to detecting that the refrigerant content of the indoor unit is greater than or equal to the first preset content L1 and lasts for the first detection time tDetect1, controlling the indoor fan to run at the fifth preset speed R5 for the second preset time t2; and in response to detecting that the refrigerant content of the indoor unit is less than the first preset content L1 and greater than or equal to the second preset content L2 and lasts for the second detection time tDetect2, controlling the indoor fan to run at the sixth preset speed R6 for the third preset time t3; and in response to the refrigerant content of the indoor unit being less than the second preset content L2 and lasting for the third detection time tDetect3, first controlling the indoor fan to run at the sixth preset speed R6 for the third preset time t3, and then controlling the indoor fan to run at the seventh preset speed R7 for the fourth preset time t4.

[0073] That is, to prevent the refrigerant content from rising again, after the indoor fan is controlled to run at the sixth preset speed R6 for t3 time, the refrigerant content in the indoor unit is obtained again, and refrigerant discharge control is performed based on the latest refrigerant content.

[0074] Specifically, if the refrigerant content Ln≥L1 detected within the continuous detection time t1, the refrigerant content in the indoor unit increases, and the current rotation speed cannot meet the refrigerant diffusion requirements. The indoor unit fan is controlled to run at the larger fifth preset speed R5 to forcefully disperse the refrigerant and reduce the refrigerant content. After running for t2 time, judgment and control are performed based on the latest refrigerant content information.

[0075] If the refrigerant content L2 ≤ Ln < L1 is continuously detected for detection time t2, it is considered that the refrigerant content has not rebounded, and the indoor fan is controlled to continue running at the current speed for time t3. After time t3, judgment and control are again made based on the latest refrigerant content information. It should be noted that if the indoor fan runs at the sixth preset speed R6 for time t3 for the preset number of cycles, the refrigerant dispersal effect of the sixth preset speed R6 is considered to be insufficient, and the indoor fan should be controlled to operate at a higher speed to improve the refrigerant dispersal effect.

[0076] If the refrigerant content Ln is detected to be less than L2 within 3 consecutive detection times, it is considered that the current refrigerant dissipation effect is better. In order to avoid the refrigerant content from rising again, the indoor fan is continued to be controlled to run at the sixth preset speed R6 for t3 time, and then the indoor fan is controlled to run at the seventh preset speed R7 for t4 time, and judgment and control are performed based on the latest refrigerant content information.

[0077] In one embodiment of the present application, after controlling the indoor fan to run at the seventh preset speed R7 for the fourth preset time t4, the control method of the air conditioner further includes: in response to detecting that the refrigerant content of the indoor unit is greater than or equal to the first preset content L1 and lasts for the first detection time tDetect1, controlling the indoor fan to run at the fifth preset speed R5 for the second preset time t2; in response to detecting that the refrigerant content of the indoor unit is less than the first preset content L1 and greater than or equal to the second preset content L2 and lasts for the second detection time tDetect2, controlling the indoor fan to run at the sixth preset speed R6 for the third preset time t3; in response to detecting that the refrigerant content of the indoor unit is less than the second preset content L2 and lasts for the third detection time tDetect3, determining that the discharge is completed.

[0078] That is, after the indoor fan runs at the seventh preset speed R7 for t4 time, the latest cold concentration is obtained, and then the refrigerant discharge control is performed according to the latest refrigerant content.

[0079] Specifically, if the refrigerant content Ln≥L1 detected within the continuous detection time t1, the refrigerant content in the indoor unit increases, and the current speed cannot meet the refrigerant diffusion requirements, then the indoor unit fan is controlled to run at the fifth preset speed R5 to forcefully disperse the refrigerant and reduce the refrigerant content, and after running for t2 time, judgment and control are performed based on the latest refrigerant content information.

[0080] If the refrigerant content L2≤Ln<L1 is detected within the continuous detection time t2, it is considered that the refrigerant content in the indoor unit has risen, and the current speed cannot meet the refrigerant diffusion requirements, but the relative increase in refrigerant content is small. Therefore, the indoor fan is controlled to run at the sixth preset speed R6, and at the running time t3, judgment and control are performed based on the latest refrigerant content information.

[0081] If the refrigerant content Ln is detected to be less than L2 within 3 consecutive detection times, it is considered that running at a lower speed will not cause an increase in the refrigerant content, and the refrigerant leakage in the indoor unit is discharged. The indoor fan is further controlled to operate alternately at different wind speeds to provide a refrigerant leakage reminder.

[0082] Therefore, this embodiment achieves the purpose of quickly reducing the leaked refrigerant content by controlling the speed of the indoor fan to change with the change of the refrigerant content, and solves the problem of accumulation of leaked refrigerant. At the same time, by switching the speed of the indoor fan back and forth, the customer can have changes in the perception of wind speed, air volume, indoor unit air supply noise, etc., and timely discover the problem of refrigerant leakage.

[0083] In addition, if the continuous discharge time of the indoor unit refrigerant reaches the preset time and the discharge is still not completed, it is considered that a refrigerant discharge failure has occurred. The indoor fan can be continuously controlled to run at the fifth preset speed R5. On the one hand, the refrigerant diffusion effect can be guaranteed to avoid refrigerant aggregation. On the other hand, the fifth preset speed R5 is greater than the maximum speed Rmax of the indoor fan, which can ensure the maximization of wind speed, air volume and indoor unit noise, thereby reminding the user. At the same time, the fault can also be displayed through the fault code to improve the diversity of fault feedback methods.

[0084] As a specific embodiment of the present application, as shown in FIG2 , the control method of the air conditioner may include the following steps:

[0085] S201, the air conditioner is powered on and operates.

[0086] S202: Determine whether the refrigerant leakage detection device has a fault. If so, execute step S203; if not, execute step S204.

[0087] S203, controlling the air conditioner to execute the air supply mode, controlling the air outlet angle of the indoor unit to be a preset angle, and controlling the indoor fan to operate alternately at a third preset speed R3 and a fourth preset speed R4 to provide an abnormal device failure reminder.

[0088] S204: Detect the refrigerant content Ln in the indoor unit by using a refrigerant leakage detection device.

[0089] S205: Determine whether the refrigerant content Ln is greater than or equal to a preset content threshold L0 and lasts for a detection time t. If so, execute step S206; if not, execute step S202.

[0090] S206 , controlling the air conditioner to execute the air supply mode, the air outlet angle of the indoor unit is a preset angle, and the indoor fan continuously runs at a fifth preset speed R5 for a first preset time t1 .

[0091] S207: Determine whether the refrigerant content Ln is greater than or equal to a first preset content L1 and lasts for a first detection time t detection 1. If so, execute step S208; if not, execute step S209.

[0092] S208: Continue to control the indoor fan to operate at the fifth preset speed R5 for the second preset time t2. Execute step S207.

[0093] S209: Determine whether the refrigerant content Ln is greater than or equal to a second preset content L2 and lasts for a second detection time tDetect2. If so, execute step S210; if not, execute step S214.

[0094] S210: Control the indoor fan to operate at a sixth preset speed R6 for a third preset time t3.

[0095] S211, determining whether the refrigerant content Ln is greater than or equal to a first preset content L1 and lasts for a first detection time t detection 1. If so, executing step S208; if not, executing step S212.

[0096] S212: Determine whether the refrigerant content Ln is greater than or equal to a second preset content L2 and lasts for a second detection time tDetect2. If so, execute step S210; if not, execute step S213.

[0097] S213, controlling the indoor fan to run at a sixth preset speed R6 for a third preset time t3.

[0098] S214, controlling the indoor fan to operate at a seventh preset speed R7 for a fourth preset time t4.

[0099] S215: Determine whether the refrigerant content Ln is greater than or equal to a first preset content L1 and lasts for a first detection time t detection 1. If so, execute step S208; if not, execute step S216.

[0100] S216: Determine whether the refrigerant content Ln is greater than or equal to a second preset content L2 and lasts for a second detection time tDetect2. If so, execute step S210; if not, execute step S217.

[0101] S217 , determining that the refrigerant leak in the indoor unit has been discharged, and controlling the indoor fan to alternately operate at a first preset speed R1 and a second preset speed R2 to issue a refrigerant leakage reminder.

[0102] It should be noted that this specific embodiment is only one possible implementation method of the present application, and the functional self-test of the refrigerant leakage detection device and the acquisition of the refrigerant content can be performed simultaneously.

[0103] Furthermore, the priority of the refrigerant leakage fault is higher than the self-test faults such as the life warning and detection function abnormality of the refrigerant leakage detection device. When two different types of faults occur at the same time, the refrigerant leakage processing is performed first. For example, when the refrigerant leakage detection device has a life abnormality, that is, the usage time of the refrigerant leakage detection device reaches the preset life time, and it is determined that a refrigerant leakage has occurred in the indoor unit, the refrigerant leakage in the indoor unit is discharged first. After the refrigerant discharge is completed, the indoor fan operation is controlled according to the refrigerant leakage reminder strategy.

[0104] In summary, according to the control method of an air conditioner according to an embodiment of the present disclosure, the air conditioner includes an indoor unit and a refrigerant leakage detection device, the refrigerant leakage detection device is used to detect the refrigerant content leaked from the air conditioner, and the indoor unit includes an indoor fan. In response to the refrigerant leakage detection device identifying an abnormal condition, the method controls the indoor fan to operate alternately at different wind speeds; wherein the abnormal condition includes: a refrigerant leakage in the air conditioner; and / or a malfunction of the refrigerant leakage detection device. Thus, the method determines whether a refrigerant leakage has occurred in the air conditioner based on the refrigerant content of the air conditioner, thereby ensuring the accuracy of refrigerant leakage detection. At the same time, when a refrigerant leakage occurs in the air conditioner and / or a malfunction occurs in the refrigerant leakage detection device, by controlling the indoor fan to operate alternately at different wind speeds, the customer experiences changes in physical sensations such as wind speed, air volume, and indoor fan air supply noise, thereby effectively reminding the customer.

[0105] Corresponding to the above embodiments, the present disclosure also proposes a computer-readable storage medium.

[0106] The computer-readable storage medium of the embodiment of the present disclosure stores a control program for an air conditioner, and the control program for the air conditioner implements the above-mentioned control method for the air conditioner when executed by a processor.

[0107] According to the computer-readable storage medium of the embodiment of the present disclosure, the above-mentioned air conditioner control method is implemented when the air conditioner control program stored thereon is executed by the processor. Based on the above-mentioned air conditioner control method, the accuracy of refrigerant leakage detection is guaranteed. At the same time, when a refrigerant leak occurs in the air conditioner and / or a refrigerant leakage detection device malfunctions, the indoor fan is controlled to operate alternately at different wind speeds, so that the customer will have changes in physical perception of wind speed, air volume, indoor fan air supply noise, etc., thereby achieving the purpose of effectively reminding the customer.

[0108] Corresponding to the above embodiments, the present disclosure also proposes an air conditioner.

[0109] As shown in FIG3 , the air conditioner according to the embodiment of the present disclosure includes a memory, a processor, and an air conditioner control program stored in the memory and executable on the processor. When the processor executes the air conditioner control program, the above-mentioned air conditioner control method is implemented.

[0110] According to the air conditioner of the embodiment of the present disclosure, the control program of the air conditioner is executed by the processor to implement the above-mentioned control method of the air conditioner. Based on the above-mentioned control method of the air conditioner, the accuracy of refrigerant leakage detection is guaranteed. At the same time, when a refrigerant leak occurs in the air conditioner and / or a malfunction occurs in the refrigerant leakage detection device, the indoor fan is controlled to operate alternately at different wind speeds, so that the customer will have changes in physical perception of wind speed, air volume, indoor fan air supply noise, etc., thereby achieving the purpose of effectively reminding the customer.

[0111] Corresponding to the above embodiments, the present disclosure also proposes an air conditioner.

[0112] As shown in FIG. 4 , the air conditioner according to the embodiment of the present disclosure includes an indoor unit 10 , a refrigerant leakage detection device 20 , and a controller 30 .

[0113] The indoor unit 10 includes an indoor fan 11. A refrigerant leak detection device 20 is configured to detect the amount of refrigerant leaking from the air conditioner. The controller 20 is configured to control the indoor fan 11 to alternately operate at different speeds in response to the refrigerant leak detection device 20 detecting an abnormality. The abnormality may include: a refrigerant leak in the air conditioner; and / or a malfunction of the refrigerant leak detection device 20.

[0114] According to one embodiment of the present disclosure, the controller 30 controls the indoor fan 11 to operate alternately at different wind speeds, specifically for: when the abnormal condition is a refrigerant leakage in the air conditioner, controlling the indoor fan 11 to operate alternately at a first preset speed and a second preset speed, wherein the first preset speed is greater than the second preset speed; when the abnormal condition is a fault abnormality in the refrigerant leakage detection device 20, controlling the indoor fan 11 to operate alternately at a third preset speed and a fourth preset speed, wherein the third preset speed is greater than the fourth preset speed; wherein the first preset speed is different from the third preset speed; and / or the second preset speed is different from the fourth preset speed.

[0115] According to one embodiment of the present disclosure, when the abnormal condition is refrigerant leakage in the air conditioner, the controller 30 is further used to control the operation of the indoor fan 11 to discharge the leaked refrigerant in the indoor unit 10 before controlling the indoor fan 11 to operate alternately at different wind speeds.

[0116] According to one embodiment of the present disclosure, the controller 30 controls the operation of the indoor fan 11 to discharge the refrigerant leaked in the indoor unit 10, specifically for: controlling the indoor fan 11 to operate at a fifth preset speed for a first preset time; in response to detecting that the refrigerant content of the indoor unit 10 is greater than or equal to the first preset content and lasts for a first detection time, continuing to control the indoor fan 11 to operate at the fifth preset speed for a second preset time; and, in response to detecting that the refrigerant content of the indoor unit 10 is less than the first preset content and greater than or equal to the second preset content and lasts for a second detection time, controlling the indoor fan 11 to operate at a sixth preset speed for a third preset time, wherein the sixth preset speed is less than the fifth preset speed; and, in response to detecting that the refrigerant content of the indoor unit 10 is less than the second preset content and lasts for a third detection time, controlling the indoor fan 11 to operate at a seventh preset speed for a fourth preset time, wherein the seventh preset speed is less than the sixth preset speed.

[0117] According to one embodiment of the present disclosure, after controlling the indoor fan 11 to run at the sixth preset speed for the third preset time, the controller 30 is further used to: in response to detecting that the refrigerant content of the indoor unit 10 is greater than or equal to the first preset content and lasts for the first detection time, control the indoor fan 11 to run at the fifth preset speed for the second preset time; and in response to detecting that the refrigerant content of the indoor unit 10 is less than the first preset content and greater than or equal to the second preset content and lasts for the second detection time, control the indoor fan 11 to run at the sixth preset speed for the third preset time; and in response to detecting that the refrigerant content of the indoor unit 10 is less than the second preset content and lasts for the third detection time, first control the indoor fan 11 to run at the sixth preset speed for the third preset time, and then control the indoor fan to run at the seventh preset speed for the fourth preset time.

[0118] According to one embodiment of the present disclosure, after controlling the indoor fan to run at a fifth preset speed for a fourth preset time, the controller 30 is further used to: in response to detecting that the refrigerant content of the indoor unit 10 is greater than or equal to the first preset content and lasts for a first detection time, control the indoor fan 11 to run at a fifth preset speed for a second preset time; in response to detecting that the refrigerant content of the indoor unit 10 is less than the first preset content and greater than or equal to the second preset content and lasts for a second detection time, control the indoor fan 11 to run at a sixth preset speed for a third preset time; in response to detecting that the refrigerant content of the indoor unit 10 is less than the second preset content and lasts for a third detection time, determine that the discharge is completed.

[0119] According to one embodiment of the present disclosure, before the controller 30 controls the indoor fan 11 to operate alternately at different wind speeds, it is also used to control the air conditioner to operate in the air supply mode.

[0120] It should be noted that for details not disclosed in the air conditioner of the embodiment of the present disclosure, please refer to the details disclosed in the control method of the air conditioner of the above embodiment of the present disclosure, and the details will not be repeated here.

[0121] According to an embodiment of the air conditioner disclosed herein, the indoor unit includes an indoor fan, and a refrigerant leak detection device is used to detect the amount of refrigerant leaking from the air conditioner. In response to the refrigerant leak detection device identifying an abnormal condition, the controller controls the indoor fan to alternately operate at different wind speeds. The abnormal condition includes: a refrigerant leak in the air conditioner; and / or a malfunction of the refrigerant leak detection device. Thus, the air conditioner determines whether a refrigerant leak has occurred based on the refrigerant content in the air conditioner, ensuring the accuracy of refrigerant leak detection. Furthermore, when a refrigerant leak occurs in the air conditioner and / or the refrigerant leak detection device malfunctions, the controller controls the indoor fan to alternately operate at different wind speeds, causing the customer to experience changes in wind speed, air volume, and indoor fan air supply noise, thereby effectively alerting the customer.

[0122] It should be noted that the logic and / or steps represented in the flowcharts or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing the logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (e.g., a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device). For purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (non-exhaustive list) of computer-readable media include the following: an electrical connection with one or more wires (electronic device), a portable computer disk cartridge (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and programmable read-only memory (EPROM or flash memory), fiber optic devices, and portable compact disc read-only memory (CDROM). Furthermore, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing it in another suitable manner if necessary, and then storing it in a computer memory.

[0123] It should be understood that various parts of the present disclosure can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof can be used to implement: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application-specific integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0124] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0125] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0126] In this disclosure, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components, unless otherwise expressly limited. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on specific circumstances.

[0127] Although the embodiments of the present disclosure have been shown and described above, it is understood that the above embodiments are illustrative and are not to be construed as limitations on the present disclosure. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present disclosure.

Claims

1. A control method for an air conditioner, the air conditioner comprising an indoor unit and a refrigerant leakage detection device, the refrigerant leakage detection device being used to detect the refrigerant content leaked from the air conditioner, the indoor unit comprising an indoor fan, the method comprising: In response to the refrigerant leakage detection device identifying an abnormal condition, controlling the indoor fan to operate alternately at different wind speeds; wherein the abnormal condition includes: The air conditioner has a refrigerant leak; and / or, The refrigerant leakage detection device fails abnormally.

2. The method according to claim 1, wherein: The controlling the indoor fan to operate alternately at different wind speeds comprises: When the abnormal condition is a refrigerant leakage in the air conditioner, the indoor fan is controlled to alternately operate at a first preset speed and a second preset speed, wherein the first preset speed is greater than the second preset speed; When the abnormal condition is that the refrigerant leakage detection device fails abnormally, the indoor fan is controlled to alternately operate at a third preset speed and a fourth preset speed, and the third preset speed is greater than the fourth preset speed; Wherein, the first preset speed is different from the third preset speed; and / or the second preset speed is different from the fourth preset speed.

3. The method according to claim 1 or 2, wherein: When the abnormal condition is refrigerant leakage in the air conditioner, before controlling the indoor fan to alternately operate at different wind speeds, the method further includes: The indoor fan is controlled to operate so as to discharge the refrigerant leaking from the indoor unit.

4. The method according to claim 3, wherein: The controlling the indoor fan to operate so as to discharge the refrigerant leaked from the indoor unit includes: Controlling the indoor fan to run at a fifth preset speed for a first preset time; In response to detecting that the refrigerant content of the indoor unit is greater than or equal to a first preset content and lasts for a first detection time, controlling the indoor fan to operate at the fifth preset speed for a second preset time; and In response to detecting that the refrigerant content of the indoor unit is less than the first preset content and greater than or equal to the second preset content and lasts for a second detection time, controlling the indoor fan to operate at a sixth preset speed for a third preset time, wherein the sixth preset speed is less than the fifth preset speed; and In response to detecting that the refrigerant content of the indoor unit is less than the second preset content and lasts for a third detection time, the indoor fan is controlled to operate at a seventh preset speed for a fourth preset time, wherein the seventh preset speed is less than the sixth preset speed.

5. The method according to claim 4, wherein: After controlling the indoor fan to run at the sixth preset speed for a third preset time, the method further includes: In response to detecting that the refrigerant content of the indoor unit is greater than or equal to the first preset content and lasts for the first detection time, controlling the indoor fan to operate at the fifth preset speed for the second preset time; and In response to detecting that the refrigerant content of the indoor unit is less than the first preset content and greater than or equal to the second preset content and lasts for the second detection time, controlling the indoor fan to operate at the sixth preset speed for the third preset time; and In response to detecting that the refrigerant content in the indoor unit is less than the second preset content and lasts for the third detection time, the indoor fan is first controlled to run at the sixth preset speed for the third preset time, and then the indoor fan is controlled to run at the seventh preset speed for the fourth preset time.

6. The method according to claim 5, wherein: After controlling the indoor fan to operate at the seventh preset speed for a fourth preset time, the method further includes: In response to detecting that the refrigerant content of the indoor unit is greater than or equal to the first preset content and lasts for the first detection time, controlling the indoor fan to operate at the fifth preset speed for the second preset time; In response to detecting that the refrigerant content of the indoor unit is less than the first preset content and greater than or equal to the second preset content and lasts for the second detection time, controlling the indoor fan to operate at the sixth preset speed for the third preset time; In response to detecting that the refrigerant content of the indoor unit is less than the second preset content and lasts for the third detection time, it is determined that the discharge is completed.

7. The method according to any one of claims 1 to 6, wherein: Before controlling the indoor fan to operate alternately at different wind speeds, the method further includes: The air conditioner is controlled to operate in an air supply mode.

8. A computer-readable storage medium having a control program for an air conditioner stored thereon, wherein the control program for the air conditioner, when executed by a processor, implements the control method for the air conditioner according to any one of claims 1 to 7.

9. An air conditioner, comprising a memory, a processor, and a control program of the air conditioner stored in the memory and executable on the processor, wherein when the processor executes the control program of the air conditioner, the control method of the air conditioner according to any one of claims 1 to 7 is implemented.

10. An air conditioner, comprising: An indoor unit and a refrigerant leakage detection device, wherein the refrigerant leakage detection device is used to detect the refrigerant content leaked from the air conditioner, and the indoor unit includes an indoor fan; The controller is used to control the indoor fan to Alternately operate at different wind speeds; wherein the abnormal condition includes: refrigerant leakage in the air conditioner; and / or, The refrigerant leakage detection device fails abnormally.

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