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

Abstract

This invention discloses an air conditioner and its control method, as well as a computer-readable storage medium. The air conditioner includes an indoor unit and a refrigerant leak detection device. The refrigerant leak detection device is used to detect the amount of refrigerant leaking from the air conditioner. The indoor unit includes an indoor fan. The method includes: in response to the refrigerant leak detection device identifying an abnormal condition, controlling the indoor fan to operate alternately at different fan speeds; wherein the abnormal condition includes: refrigerant leakage in the air conditioner; and / or, malfunction of the refrigerant leak detection device. This method ensures the accuracy of refrigerant leak detection by obtaining the refrigerant content of the air conditioner. Simultaneously, when refrigerant leakage occurs in the air conditioner and / or the refrigerant leak detection device malfunctions, controlling the indoor fan to operate alternately at different fan speeds creates a perceptible change in wind speed, airflow, and noise for the customer, thus achieving a reminder.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and in particular to a control method for an air conditioner, a computer-readable storage medium, and an air conditioner. Background Technology

[0002] For environmental reasons, refrigerants with good environmental properties have been widely promoted and applied in refrigeration, such as R290, R32, and R454B. However, these refrigerants are flammable and pose safety risks when used.

[0003] In related technologies, when a refrigerant leak is detected, a fault message is issued to remind the customer of the leak of flammable refrigerant. For example, a fault code is displayed or a beeping sound is made to remind the customer of the refrigerant leak. However, this reminder method has certain limitations and the reminder effect is not good. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, the first objective of this invention is to propose a control method for an air conditioner that determines whether a refrigerant leak has occurred based on the refrigerant content of 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 indoor fan is controlled to alternately operate at different wind speeds, causing the customer to perceive changes in wind speed, airflow, and indoor fan noise, effectively alerting the customer.

[0005] A second objective of this invention is to provide a computer-readable storage medium.

[0006] The third objective of this invention is to provide an air conditioner.

[0007] The fourth objective of this invention is to provide an air conditioner.

[0008] To achieve the above objectives, a first aspect of the present invention provides a control method for an air conditioner, the air conditioner including 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, the indoor unit including an indoor fan, the control method for the air conditioner including: in response to the refrigerant leak detection device identifying an abnormal condition, controlling the indoor fan to operate alternately at different fan speeds; wherein the abnormal condition includes: the air conditioner experiencing a refrigerant leak; and / or, the refrigerant leak detection device malfunctioning.

[0009] According to an embodiment of the present invention, the air conditioner includes an indoor unit and a refrigerant leak detection device. The refrigerant leak detection device is used to detect the amount of refrigerant leaking from the air conditioner. The indoor unit includes an indoor fan. In response to the refrigerant leak detection device identifying an abnormal condition, the method controls the indoor fan to operate alternately at different fan speeds. The abnormal condition includes: refrigerant leakage in the air conditioner; and / or, a malfunction in the refrigerant leak detection device. Therefore, this method determines whether a refrigerant leak has occurred based on the refrigerant content of 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, controlling the indoor fan to operate alternately at different fan speeds creates perceptible changes in fan speed, airflow, and indoor fan noise for the customer, effectively alerting them.

[0010] In addition, the air conditioner control method according to the above embodiments of the present invention may also have the following additional technical features:

[0011] According to one embodiment of the present invention, controlling the indoor fan to operate alternately at different wind speeds includes: when the abnormal condition is a refrigerant leak in the air conditioner, controlling the indoor fan 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 leak detection device, controlling the indoor fan 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.

[0012] According to one embodiment of the present invention, when the abnormal condition is that the air conditioner leaks refrigerant, before controlling the indoor fan to run alternately at different fan speeds, the control method of the air conditioner further includes: controlling the operation of the indoor fan to discharge the leaked refrigerant in the indoor unit.

[0013] According to one embodiment of the present invention, controlling the operation of an indoor fan to discharge leaked refrigerant from the indoor unit includes: 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 a first preset content and continues 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 but greater than or equal to the second preset content and continues 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 continues 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.

[0014] According to an embodiment of the present invention, 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 a first preset content and continues 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 but greater than or equal to the second preset content and continues 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 continues for a third detection time, first controlling the indoor fan to run at a sixth preset speed for a third preset time, and then controlling the indoor fan to run at a seventh preset speed for a fourth preset time.

[0015] According to an embodiment of the present invention, 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 a first preset content and continues 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 but greater than or equal to the second preset content and continues 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 the refrigerant content of the indoor unit being less than the second preset content and continuing for a third detection time, determining that the emission is complete.

[0016] According to one embodiment of the present invention, before controlling the indoor fan to operate alternately at different wind speeds, the control method of the air conditioner further includes: controlling the air conditioner to operate in a ventilation mode.

[0017] To achieve the above objectives, a second aspect of the present invention provides a computer-readable storage medium storing a control program for an air conditioner, which, when executed by a processor, implements the above-described air conditioner control method.

[0018] According to an embodiment of the present invention, when the control program of an air conditioner stored thereon is executed by a processor, the control method of the air conditioner described above is implemented. Based on the control method of the air conditioner described above, the accuracy of refrigerant leak detection is ensured. At the same time, when the air conditioner experiences refrigerant leak and / or the refrigerant leak detection device malfunctions, the indoor fan is controlled to operate alternately at different wind speeds, so that the customer experiences perceptual changes in wind speed, air volume, and indoor fan noise, thereby effectively reminding the customer.

[0019] To achieve the above objectives, a third aspect of the present invention provides an air conditioner, including 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, it implements the above-described air conditioner control method.

[0020] According to the air conditioner of the present invention, the control program of the air conditioner is executed by the processor to realize 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 the air conditioner experiences refrigerant leakage and / or the refrigerant leakage detection device malfunctions, the indoor fan is controlled to run alternately at different wind speeds, so that the customer experiences perceptual changes in wind speed, air volume, and indoor fan noise, thereby effectively reminding the customer.

[0021] To achieve the above objectives, a fourth aspect of the present invention provides an air conditioner, comprising: 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, the indoor unit including an indoor fan; and a controller being used to control the indoor fan to alternately operate at different fan speeds in response to the refrigerant leak detection device identifying an abnormal condition; wherein the abnormal condition includes: the air conditioner experiencing a refrigerant leak; and / or, the refrigerant leak detection device malfunctioning.

[0022] According to an embodiment of the present invention, the indoor unit of the air conditioner includes an indoor fan, a refrigerant leak detection device for detecting the amount of refrigerant leaking from the air conditioner, and a controller, in response to the refrigerant leak detection device identifying an abnormal condition, controlling the indoor fan to operate alternately at different fan speeds. The abnormal conditions include: refrigerant leakage in the air conditioner; and / or, malfunction of the refrigerant leak detection device. Therefore, the air conditioner determines whether a refrigerant leak has occurred based on the refrigerant content of the air conditioner, ensuring the accuracy of refrigerant leak detection. Simultaneously, when a refrigerant leak occurs and / or the refrigerant leak detection device malfunctions, controlling the indoor fan to operate alternately at different fan speeds creates perceptible changes in fan speed, airflow, and indoor fan noise for the customer, effectively alerting them.

[0023] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] Figure 1 This is a flowchart of an air conditioner control method according to an embodiment of the present invention;

[0025] Figure 2 A flowchart of an air conditioner control method according to a specific embodiment of the present invention;

[0026] Figure 3 This is a block diagram of an air conditioner according to an embodiment of the present invention;

[0027] Figure 4 This is a block diagram of an air conditioner according to an embodiment of the present invention. Detailed Implementation

[0028] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0029] The control method for an air conditioner, a computer-readable storage medium, and an air conditioner according to embodiments of the present invention are described below with reference to the accompanying drawings.

[0030] Figure 1 This is a flowchart of an air conditioner control method according to an embodiment of the present invention.

[0031] In one embodiment of this application, the air conditioner includes an indoor unit and a refrigerant leak detection device. The refrigerant leak detection device is used to detect the amount of refrigerant leaked from the air conditioner. The indoor unit includes an indoor fan.

[0032] An air conditioner is a complete refrigeration system that includes at least one refrigerant leak detection device. This device, developed based on refrigerant characteristics, is a component that detects the content of flammable refrigerant and can consist of a refrigerant concentration sensor, a main board, and connecting wires. The refrigerant leak detection device uses the refrigerant concentration sensor to detect the refrigerant content at its installation location and then feeds the detected refrigerant content back to the air conditioner's controller.

[0033] Specifically, refrigerant leak detection devices 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 highest. If a refrigerant leak occurs, the detection device can quickly detect it and provide feedback on information such as refrigerant concentration. For example, a refrigerant leak detection device can be placed near the welded gas-liquid piping of the indoor unit's heat exchanger to provide feedback on the refrigerant content of the indoor unit and determine whether a refrigerant leak has occurred. Similarly, a refrigerant leak detection device can be placed near the welded gas-liquid piping of the outdoor unit's heat exchanger to provide feedback on the refrigerant content of the outdoor unit and determine whether a refrigerant leak has occurred.

[0034] like Figure 1 As shown, the control method for an air conditioner according to an embodiment of the present invention includes:

[0035] S1, in response to the refrigerant leak detection device identifying an abnormal condition, controls the indoor fan to operate alternately at different fan speeds; wherein the abnormal condition includes: the air conditioner leaking refrigerant; and / or, the refrigerant leak detection device malfunctioning.

[0036] Refrigerant content is used to indicate the amount of refrigerant in the space it is in. It can be a refrigerant concentration. By detecting the refrigerant content of the air conditioner and using the refrigerant content to detect whether the air conditioner has leaked refrigerant in real time, the accuracy of refrigerant leak detection can be improved, thus ensuring control accuracy.

[0037] 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 L0. When the refrigerant leak detection device detects that the refrigerant content is less than the preset content threshold L0, it indicates that there is no refrigerant leak, and the air conditioner maintains its original state. If there is a new air conditioning command, it will operate according to the latest air conditioning command. When it is determined that the refrigerant content is greater than or equal to the preset content threshold L0, it is considered that the air conditioner has a refrigerant leak. At this time, the indoor fan is controlled to run alternately at different fan speeds. For example, the indoor fan can be controlled to run at the maximum fan speed for t1 time, then at the minimum fan speed for t2 time, and so on. Through the periodic changes in fan speed, air volume, and indoor fan noise, the customer is alerted to the refrigerant leak fault. It should be noted that, in addition to the above-mentioned criteria of considering refrigerant leakage as occurring when the refrigerant content is greater than or equal to the preset content threshold L0, and considering no refrigerant leakage as occurring when the refrigerant content is less than the preset content threshold L0, the condition can also be met if the refrigerant content is greater than or equal to the preset content threshold L0 and continues for t... 检测 If the time frame is specified, the air conditioner is considered to have a refrigerant leak; otherwise, it is considered not to have a refrigerant leak. No restrictions are imposed here.

[0038] In addition to detecting refrigerant content, the refrigerant leak detection device also has self-checking functions for lifespan and detection capabilities. If the device does not issue a lifespan warning or detect a malfunction, it indicates normal operation, and the air conditioner will maintain its original state, operating according to any new air conditioning commands. However, if the self-check detects a lifespan warning or a malfunction, it sends the corresponding information to the air conditioning controller. The controller then determines that the device is malfunctioning and controls the indoor fan to alternate between different fan speeds to alert the user to the problem. For example, after determining that the device is malfunctioning, the controller can first run the indoor fan at maximum speed for time t2, then at minimum speed for time t1, alternating between the two. This periodic change in fan speed, airflow, and indoor fan noise serves as a reminder to the user of the refrigerant leak detection device's functionality.

[0039] It should be noted that, to differentiate between refrigerant leak alerts and device malfunction alerts, different parameters such as maximum fan speed, minimum fan speed, or the duration of each fan speed can be set to differentiate the alerts. For example, if a first control strategy is used to control the indoor fan when the air conditioner experiences a refrigerant leak, and a second control strategy is used when the refrigerant leak detection device malfunctions, then when both refrigerant leaks and malfunctions occur simultaneously, a target cycle time can be set. For instance, the first control strategy can be used initially to control the indoor fan, and after the target cycle time, the second control strategy can be used, and this cycle can be repeated. For example, malfunctions of refrigerant leak detection devices can include lifespan abnormalities or detection function abnormalities. It is understandable that when a refrigerant leak detection device only experiences a lifespan abnormality, it will not affect the accuracy of the refrigerant content it obtains, and the normal operation of the refrigerant leak detection function can still be guaranteed. Therefore, it is possible for a refrigerant leak detection device to experience a lifespan abnormality, while simultaneously determining that the air conditioner has experienced a refrigerant leak based on the refrigerant content. In other words, the air conditioner experiences a refrigerant leak and the refrigerant leak detection device malfunctions at the same time.

[0040] In addition, when a refrigerant leak occurs in the air conditioner or the refrigerant leak detection device malfunctions, the air conditioner controller can also display the corresponding fault code and sound an alarm. Simultaneously, it can control the indoor fan to alternate between different fan speeds to enhance the alerting 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 show fault code M0, indicating a refrigerant leak. If the refrigerant leak detection device malfunctions, the air conditioner controller can control the indoor unit's display panel to show fault code F0, indicating a lifespan alarm or detection failure. Furthermore, fault codes can also be displayed via mobile devices; there are no restrictions on this.

[0041] Furthermore, in addition to the refrigerant leak detection device having a self-test function, it can also be monitored in real time based on external detection modules such as voltage detection modules, current detection modules, and timing modules, and the real-time monitoring data is fed back to the air conditioning controller. The air conditioning controller determines whether the refrigerant leak detection device is malfunctioning based on the acquired monitoring data.

[0042] In one embodiment of this application, when it is determined that the air conditioner has a refrigerant leak and / or the refrigerant leak detection device is malfunctioning based on the refrigerant content, the control method of the air conditioner further includes: controlling the air outlet angle of the indoor unit to a preset angle.

[0043] In other words, if the air conditioner experiences a refrigerant leak or the refrigerant leak detection device malfunctions, the indoor fan's air outlet angle will be adjusted to a preset angle to ensure maximum airflow and improve the alert effect. The preset angle can be set according to actual conditions.

[0044] In one embodiment of this application, when it is determined that the air conditioner has a refrigerant leak and / or the refrigerant leak detection device is malfunctioning based on the refrigerant content, the control method of the air conditioner further includes: controlling the air conditioner to operate in a fan-supply mode.

[0045] In other words, 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 is malfunctioning, the air conditioner will stop operating in the current cooling, dehumidifying, heating, or electric auxiliary heating modes, and directly maintain or switch to the fan-only mode. Stopping or prohibiting the operation of cooling, dehumidifying, and heating modes is to ensure that the compressor stops running, thereby reducing refrigerant circulation, slowing down the degree of refrigerant leakage in the indoor unit, and reducing the concentration of leaked refrigerant. Stopping the operation of electric auxiliary heating is to reduce the surface temperature of the leaked refrigerant.

[0046] If a refrigerant leak is detected or the refrigerant leak detection device malfunctions while the air conditioner is in standby mode, the air conditioner will be directly controlled to operate in fan mode.

[0047] In one embodiment of this application, the control method of the air conditioner further includes: detecting the refrigerant content leaked by the air conditioner before and / or after the air conditioner is shut down using a refrigerant leakage detection device.

[0048] In other words, when the air conditioner is powered on but not turned on, the refrigerant leak detection device will first perform self-checks on its lifespan and detection function, as well as check the refrigerant content of the air conditioner. By performing these pre-start self-checks and refrigerant content checks, the risks associated with operating the air conditioner in the event of a refrigerant leak can be mitigated. Even when the air conditioner is turned off, the refrigerant leak detection device will continue to perform its lifespan warning, self-checks, and refrigerant content checks. Essentially, as long as the air conditioner is powered on, the refrigerant leak detection device will continuously perform its lifespan warning, self-checks, and refrigerant content checks.

[0049] In addition, the data from the refrigerant leak detection device, such as lifespan warnings, self-tests, and refrigerant leak detections, will be cleared after the air conditioner is turned off or powered off, and a new round of testing will begin after the air conditioner is powered on or restarted.

[0050] In one embodiment of this application, controlling the indoor fan to operate alternately at different wind speeds includes: when the abnormal condition is a refrigerant leak in the air conditioner, controlling the indoor fan to operate alternately at a first preset speed R1 and a second preset speed R2, where 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 operate alternately at a third preset speed R3 and a fourth preset speed R4, where the third preset speed R3 is greater than the fourth preset speed R4; wherein the first preset speed R1 and the third preset speed R3 are different; and / or, the second preset speed R2 and the fourth preset speed R4 are different. It is understood that the higher the speed of the indoor fan, the greater the wind speed; the lower the speed, the smaller the wind speed.

[0051] In other words, if a refrigerant leak is detected in the air conditioner, the indoor fan will first be controlled to run continuously for a preset time according to R1, then continuously for a preset time according to R2, and so on, alternating between the two. If a malfunction is detected in the refrigerant leak detection device, the indoor fan can be controlled to run continuously for a preset time according to R3, then continuously for a preset time according to R4, and so on, alternating between the two. This periodic change in fan speed, airflow, and indoor fan noise will alert the customer to the alarm fault. Furthermore, different fan speed settings will generate different periodic changes in fan speed, airflow, and indoor fan noise, achieving different alert effects and allowing users to promptly identify the type of fault.

[0052] Furthermore, the first preset speed R1 can be the sum of the maximum indoor fan speed Rmax and the first speed ΔR1 during normal operation of the air conditioner; the second preset speed R2 is the difference between the minimum indoor fan speed Rmin and the second speed ΔR2 during normal operation of the air conditioner; the third preset speed R3 can be the sum of the maximum indoor fan speed Rmax and the first speed ΔR3 during normal operation of the air conditioner; and the fourth preset speed R4 is the difference between the minimum indoor fan speed Rmin and the second speed ΔR4 during normal operation of the air conditioner. Therefore, using the first preset speed R1 and the third preset speed R3, which are higher than the maximum indoor fan speed Rmax, can abnormally increase the fan noise. Then, alternating with the second preset speed R2 and the fourth preset speed R4, which are lower than the minimum indoor fan speed Rmin, further emphasizes the changes in the indoor fan noise level. Combined with changes in wind speed and air volume, this enhances the alerting effect.

[0053] In addition, to ensure the distinction between refrigerant leak warnings and device malfunction warnings, besides differentiating speeds, different warning effects can also be achieved by controlling the duration of the corresponding rotation speed, allowing users to promptly confirm the corresponding fault type.

[0054] In one embodiment of this application, when the abnormal condition is that the air conditioner has a refrigerant leak, before controlling the indoor fan to run alternately at different fan speeds, the control method of the air conditioner further includes: controlling the indoor fan to run in order to discharge the leaked refrigerant in the indoor unit.

[0055] Specifically, refrigerant leaks in air conditioners can occur in either the outdoor unit or the indoor unit. When the outdoor unit leaks, the leaking refrigerant can disperse quickly due to outdoor air circulation, minimizing the risk of combustion or explosion. Therefore, in this case, the indoor fan can be controlled to alternately operate at different speeds to provide a refrigerant leak warning. However, when the indoor unit leaks, the refrigerant diffusion is poor due to the enclosed indoor environment. Refrigerant accumulation in a certain area poses a greater risk of combustion or explosion. Therefore, in this case, the leaked refrigerant in the indoor unit must first be discharged. Once the refrigerant level in the indoor unit meets safety requirements, discharge is considered complete. Only then should the indoor fan be controlled to alternately operate at different speeds to provide a refrigerant leak warning.

[0056] The following is a detailed explanation of the refrigerant discharge process when a refrigerant leak occurs in an air conditioner.

[0057] In one embodiment of this application, controlling the operation of an indoor fan to discharge leaked refrigerant from the indoor unit includes: controlling the indoor fan to operate at a fifth preset speed R5 for a first preset time t1; and responding to detecting that the refrigerant content in the indoor unit is greater than or equal to a first preset content L1 and continues for a first detection time t. 检测1 The indoor fan is controlled to run at a fifth preset speed R5 for a second preset time t2; and, in response to the detection that the refrigerant content of the indoor unit is less than a first preset content L1 and greater than or equal to a second preset content L2, and continues for a second detection time t... 检测2 Then, the indoor fan is controlled to run at the 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 of the indoor unit is less than the second preset content L2 and continues for a third detection time t... 检测3 The indoor fan is controlled to run at the seventh preset speed R7 for a fourth preset time t4, where the seventh preset speed R7 is less than the sixth preset speed R6. The parameters are: first preset content L1, second preset content L2, fifth preset speed R5, sixth preset speed R6, seventh preset speed R7, first preset time t1, second preset time t2, third preset time t3, fourth preset time t4, and first detection time t. 检测1 The second detection time t 检测2 Third detection time t 检测3 The settings can be adjusted according to actual conditions, with the first detection time t. 检测1The second detection time t 检测2 Third detection time t 检测3 It can also be zero.

[0058] Assuming the refrigerant leak detection device operates for a duration t 检测 If the refrigerant content Ln≥L0 is detected in the indoor unit, it is considered that the indoor unit has a refrigerant leak.

[0059] Specifically, when the refrigerant content Ln ≥ L0 in the indoor unit and the duration t 检测 If a refrigerant leak is detected in the indoor unit, the indoor unit fan is first controlled to run continuously at the fifth preset speed R5 for a first preset time t1 to forcefully disperse the leaking refrigerant and prevent refrigerant accumulation.

[0060] After the indoor unit fan has been running at the fifth preset speed R5 for a first preset time t1, the refrigerant content inside the indoor unit is obtained, and a judgment is made based on the latest refrigerant content information, and the following control process is executed:

[0061] If it continues for t 检测1 If the refrigerant content Ln≥L1 detected within the time period, the indoor unit fan will continue to be 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 will be judged again based on the latest refrigerant content information and the corresponding control process will be executed.

[0062] If it continues for t 检测2 If the refrigerant content L2≤Ln<L1 is detected within a certain time, it is considered that the refrigerant content in the indoor unit is within a relatively safe range. The indoor fan is then controlled to reduce its speed and run at the sixth preset speed R6. After running for t3 time, the refrigerant content is judged again based on the latest refrigerant content information, and the corresponding control process is executed.

[0063] If it continues for t 检测3 If the refrigerant concentration Ln < L2 is detected within a certain time, it is considered that the refrigerant content in the indoor unit is already very low. The indoor fan is then controlled to run at the seventh preset speed R7. After running for t4 time, the refrigerant content is judged again based on the latest refrigerant content information, and the corresponding control process is executed.

[0064] In one embodiment of this application, the fifth preset speed R5 is the sum of the maximum speed Rmax of the indoor fan when the air conditioner is running 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 running 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 running normally and the seventh speed ΔR7. 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.

[0065] In other words, when it is determined that the indoor unit has leaked refrigerant, and when the refrigerant content Ln≥L1 and continues for t... 检测1 During this period, the operating speed of the indoor fan is increased by a certain amount based on the maximum speed Rmax of the indoor fan to run for a certain period of time, so as to forcefully disperse the leaked refrigerant and prevent its accumulation.

[0066] When the refrigerant content L2≤Ln<L1 and continues for t 检测2 During this period, continue to control the indoor fan speed to be increased by a certain amount beyond the maximum speed Rmax and continue running for a period of time to continue dispersing the refrigerant leak.

[0067] When the refrigerant content Ln < L2 and continues for t 检测3 During the specified time, the indoor fan is controlled to operate at a speed lower than the minimum speed Rmin of the indoor fan to further determine whether the refrigerant content of the indoor unit will increase under lower fan speed, thereby determining whether the refrigerant content is within a safe range and whether the refrigerant leaked inside the indoor unit has been completely discharged.

[0068] In one embodiment of this application, after the indoor fan is controlled to run at a sixth preset speed R6 for a third preset time t3, the control method of the air conditioner further includes: responding to detecting that the refrigerant content of the indoor unit is greater than or equal to a first preset content L1 and continues for a first detection time t. 检测1 The indoor fan is controlled to run at the fifth preset speed R5 for a second preset time t2; and in response to the detection 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 continues for a second detection time t 检测2 The indoor fan is controlled to run at the sixth preset speed R6 for a third preset time t3; and in response to the refrigerant content of the indoor unit being less than the second preset content L2 and continuing for a third detection time t. 检测3 First, control the indoor fan to run at the sixth preset speed R6 for the third preset time t3, then control the indoor fan to run at the seventh preset speed R7 for the fourth preset time t4.

[0069] In other words, to prevent the refrigerant content from rising, after the indoor fan runs at the sixth preset speed R6 for t3 time, the refrigerant content in the indoor unit is measured again, and refrigerant emission control is performed based on the latest refrigerant content.

[0070] Specifically, if it continues for t 检测1If the refrigerant content Ln≥L1 detected within a time period, the refrigerant content in the indoor unit increases, and the current speed cannot meet the refrigerant diffusion requirements. The indoor unit fan is controlled to run at a larger fifth preset speed R5 to forcefully disperse the refrigerant and reduce the refrigerant content. After running for t2 time, the latest refrigerant content information is used to make a judgment and control.

[0071] If it continues for t 检测2 If the refrigerant content L2 ≤ Ln < L1 is detected within the specified time, it is considered that no refrigerant content has rebounded. The indoor fan is then controlled to maintain its current speed for another t3 time. After t3 time, the latest refrigerant content information is used to make a judgment and control. It should be noted that if the indoor fan runs at the sixth preset speed R6 for t3 time a certain number of cycles is reached, the refrigerant dispersing effect at the sixth preset speed R6 is considered to be poor. The indoor fan should be controlled to run at a higher speed to improve the refrigerant dispersing effect.

[0072] If it continues for t 检测3 If the refrigerant content Ln < L2 is detected within a certain time, it is considered that the current refrigerant dispersal effect is good. In order to avoid the refrigerant content from rising again, the indoor fan is controlled to run at the sixth preset speed R6 for t3 time. Then, the indoor fan is controlled to run at the seventh preset speed R7 for t4 time, and the judgment and control are made based on the latest refrigerant content information.

[0073] In one embodiment of this application, after the indoor fan is controlled to run at a seventh preset speed R7 for a fourth preset time t4, the control method of the air conditioner further includes: responding to detecting that the refrigerant content of the indoor unit is greater than or equal to a first preset content L1 and continues for a first detection time t. 检测1 The indoor fan is controlled to run at the fifth preset speed R5 for a second preset time t2; in response to the detection 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 continues for a second detection time t 检测2 The indoor fan is controlled to run at the sixth preset speed R6 for a third preset time t3; in response to the detection that the refrigerant content of the indoor unit is less than the second preset content L2 and continues for a third detection time t 检测3 The emission has been confirmed to be complete.

[0074] In other words, after the indoor fan runs at the seventh preset speed R7 for t4 hours, the latest refrigerant concentration is obtained, and then refrigerant emission control is carried out based on the latest refrigerant content.

[0075] Specifically, if it continues for t 检测1If the refrigerant content Ln≥L1 detected within a time period, the refrigerant content in the indoor unit increases. If the current speed cannot meet the refrigerant diffusion requirements, the indoor unit fan is controlled to run at the fifth preset speed R5 to forcefully disperse the refrigerant and reduce the refrigerant content. After running for t2 time, the latest refrigerant content information is used to make a judgment and control.

[0076] If it continues for t 检测2 If the refrigerant content L2≤Ln<L1 is detected within a certain time, it is considered that the refrigerant content in the indoor unit has rebounded. The current speed cannot meet the refrigerant diffusion requirements, but the increase in refrigerant content is relatively small. Therefore, the indoor fan is controlled to run at the sixth preset speed R6, and the control is made again based on the latest refrigerant content information after running for t3 time.

[0077] If it continues for t 检测3 If the refrigerant content Ln < L2 is detected within a certain time, it is assumed that running at a lower speed will not increase the refrigerant content. Once the refrigerant leakage inside the indoor unit is discharged, the indoor fan will be further controlled to run alternately at different speeds to provide a refrigerant leakage warning.

[0078] Therefore, this embodiment achieves the goal of rapidly reducing the amount of leaked refrigerant by controlling the speed of the indoor fan to change with the refrigerant content, thus solving the problem of refrigerant accumulation. At the same time, by switching the speed of the indoor fan back and forth, customers can perceive changes in wind speed, air volume, and indoor unit noise, allowing them to detect refrigerant leaks in a timely manner.

[0079] In addition, if the refrigerant discharge from the indoor unit is not completed within the preset time, a refrigerant discharge fault is considered to have occurred. The indoor fan can be continuously controlled to run at the fifth preset speed R5. On the one hand, this ensures the refrigerant diffusion effect and avoids refrigerant accumulation. 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, fault codes can be displayed to improve the diversity of fault feedback methods.

[0080] As a specific embodiment of this application, such as Figure 2 As shown, the control method for this air conditioner may include the following steps:

[0081] S201, the air conditioner is powered on and running.

[0082] S202, Determine whether the refrigerant leak detection device is malfunctioning. If yes, proceed to step S203; if no, proceed to step S204.

[0083] S203 controls the air conditioner to execute the air supply mode, controls the air outlet angle of the indoor unit to a preset angle, and controls the indoor fan to run alternately at the third preset speed R3 and the fourth preset speed R4 to provide a device malfunction and abnormality reminder.

[0084] S204, the refrigerant content Ln of the indoor unit is detected by a refrigerant leakage detection device.

[0085] S205, determine whether the refrigerant content Ln is greater than or equal to the preset content threshold L0 and continues for t 检测 Time. If yes, proceed to step S206; otherwise, proceed to step S202.

[0086] S206, control the air conditioner to execute the air supply mode, the air outlet angle of the indoor unit is the preset angle, and the indoor fan runs continuously at the fifth preset speed R5 for the first preset time t1.

[0087] S207, determine whether the refrigerant content Ln is greater than or equal to the first preset content L1 and continues for the first detection time t. 检测1 If yes, proceed to step S208; otherwise, proceed to step S209.

[0088] S208, continue to control the indoor fan to run at the fifth preset speed R5 for the second preset time t2. Execute step S207.

[0089] S209, determine whether the refrigerant content Ln is greater than or equal to the second preset content L2 and continues for the second detection time t. 检测2 If yes, proceed to step S210; otherwise, proceed to step S214.

[0090] S210, control the indoor fan to run at the sixth preset speed R6 for the third preset time t3.

[0091] S211, determine whether the refrigerant content Ln is greater than or equal to the first preset content L1 and continues for the first detection time t. 检测1 If yes, proceed to step S208; otherwise, proceed to step S212.

[0092] S212, determine whether the refrigerant content Ln is greater than or equal to the second preset content L2 and continues for the second detection time t. 检测2 If yes, proceed to step S210; otherwise, proceed to step S213.

[0093] S213, control the indoor fan to run at the sixth preset speed R6 for the third preset time t3.

[0094] S214, control the indoor fan to run at the seventh preset speed R7 for the fourth preset time t4.

[0095] S215, determine whether the refrigerant content Ln is greater than or equal to the first preset content L1 and continues for the first detection time t. 检测1 If yes, proceed to step S208; otherwise, proceed to step S216.

[0096] S216, determine whether the refrigerant content Ln is greater than or equal to the second preset content L2 and continues for the second detection time t. 检测2 If yes, proceed to step S210; otherwise, proceed to step S217.

[0097] S217, confirm that the leaked refrigerant in the indoor unit has been discharged, and control the indoor fan to run alternately at the first preset speed R1 and the second preset speed R2 to provide a refrigerant leak warning.

[0098] It should be noted that this specific embodiment is only one possible implementation method of this application, and the self-test of the refrigerant leakage detection device and the acquisition of refrigerant content can be performed simultaneously.

[0099] Furthermore, refrigerant leakage faults have a higher priority than self-test faults such as lifespan warnings and abnormal detection functions of the refrigerant leakage detection device. When two different types of faults occur simultaneously, the refrigerant leakage is handled first. For example, when the refrigerant leakage detection device experiences a lifespan abnormality, i.e., the device's usage time reaches the preset lifespan, and a refrigerant leak is also detected in the indoor unit, the refrigerant leak inside the indoor unit is discharged first. After the refrigerant discharge is completed, the indoor fan is controlled according to the refrigerant leakage warning strategy.

[0100] In summary, according to the air conditioner control method of the present invention, the air conditioner includes an indoor unit and a refrigerant leak detection device. The refrigerant leak detection device is used to detect the amount of refrigerant leaking from the air conditioner. The indoor unit includes an indoor fan. In response to the refrigerant leak detection device identifying an abnormal condition, the method controls the indoor fan to operate alternately at different fan speeds. The abnormal condition includes: refrigerant leakage in the air conditioner; and / or, a malfunction in the refrigerant leak detection device. Therefore, this method determines whether the air conditioner has experienced a refrigerant leak based on the refrigerant content, ensuring the accuracy of refrigerant leak detection. Furthermore, when refrigerant leakage occurs in the air conditioner and / or the refrigerant leak detection device malfunctions, controlling the indoor fan to operate alternately at different fan speeds creates perceptible changes in fan speed, airflow, and indoor fan noise for the customer, effectively alerting them.

[0101] Corresponding to the above embodiments, the present invention also proposes a computer-readable storage medium.

[0102] The computer-readable storage medium of this invention stores a control program for an air conditioner, which, when executed by a processor, implements the aforementioned control method for the air conditioner.

[0103] According to an embodiment of the present invention, when the control program of an air conditioner stored thereon is executed by a processor, the control method of the air conditioner described above is implemented. Based on the control method of the air conditioner described above, the accuracy of refrigerant leak detection is ensured. At the same time, when the air conditioner experiences refrigerant leak and / or the refrigerant leak detection device malfunctions, the indoor fan is controlled to operate alternately at different wind speeds, so that the customer experiences perceptual changes in wind speed, air volume, and indoor fan noise, thereby effectively reminding the customer.

[0104] Corresponding to the above embodiments, the present invention also proposes an air conditioner.

[0105] like Figure 3 As shown, the air conditioner of this embodiment includes a memory, a processor, and a control program for the air conditioner stored in the memory and executable on the processor. When the processor executes the control program for the air conditioner, it implements the above-described control method for the air conditioner.

[0106] According to the air conditioner of the present invention, the control program of the air conditioner is executed by the processor to realize 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 the air conditioner experiences refrigerant leakage and / or the refrigerant leakage detection device malfunctions, the indoor fan is controlled to run alternately at different wind speeds, so that the customer experiences perceptual changes in wind speed, air volume, and indoor fan noise, thereby effectively reminding the customer.

[0107] Corresponding to the above embodiments, the present invention also proposes an air conditioner.

[0108] like Figure 4 As shown, the air conditioner of this embodiment includes: an indoor unit 10, a refrigerant leakage detection device 20, and a controller 30.

[0109] The indoor unit 10 includes an indoor fan 11. A refrigerant leak detection device 20 is used to detect the amount of refrigerant leaking from the air conditioner. A controller 20, in response to the refrigerant leak detection device 20 identifying an abnormal condition, controls the indoor fan 11 to operate alternately at different fan speeds; wherein the abnormal condition includes: refrigerant leakage from the air conditioner; and / or, a malfunction of the refrigerant leak detection device 20.

[0110] According to one embodiment of the present invention, the controller 30 controls the indoor fan 11 to operate alternately at different wind speeds, specifically for: when the abnormal condition is that the air conditioner is leaking refrigerant, 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 that the refrigerant leak detection device 20 is malfunctioning, 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.

[0111] According to one embodiment of the present invention, when the abnormal condition is that the air conditioner has a refrigerant leak, the controller 30 is also used to: control the indoor fan 11 to run in order to discharge the leaked refrigerant in the indoor unit 10 before controlling the indoor fan 11 to run alternately at different wind speeds.

[0112] According to one embodiment of the present invention, the controller 30 controls the indoor fan 11 to operate in order to discharge the refrigerant leaked in the indoor unit 10. Specifically, the controller 30 is configured to: control 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 a first preset content and continues for a first detection time, 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 but greater than or equal to the second preset content and continues for a second detection time, control 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 continues for a third detection time, control 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.

[0113] According to one embodiment of the present invention, after controlling the indoor fan 11 to run at a sixth preset speed for a third preset time, the controller 30 is further configured to: in response to detecting that the refrigerant content of the indoor unit 10 is greater than or equal to a first preset content and continues for a first detection time, control the indoor fan 11 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 10 is less than the first preset content but greater than or equal to the second preset content and continues for a second detection time, control the indoor fan 11 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 10 is less than the second preset content and continues for a third detection time, first control the indoor fan 11 to run at a sixth preset speed for a third preset time, and then control the indoor fan to run at a seventh preset speed for a fourth preset time.

[0114] According to one embodiment of the present invention, after controlling the indoor fan to run at a fifth preset speed for a fourth preset time, the controller 30 is further configured to: in response to detecting that the refrigerant content of the indoor unit 10 is greater than or equal to a first preset content and continues 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 but greater than or equal to the second preset content and continues for a second detection time, control the indoor fan 11 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 10 is less than the second preset content and continues for a third detection time, determine that the emission is complete.

[0115] According to one embodiment of the present invention, before the controller 30 controls the indoor fan 11 to run alternately at different wind speeds, it is also used to: control the air conditioner to run in air supply mode.

[0116] It should be noted that for details not disclosed in the air conditioner of the embodiments of the present invention, please refer to the details disclosed in the control method of the air conditioner of the above embodiments of the present invention, which will not be repeated here.

[0117] According to an embodiment of the present invention, the indoor unit of the air conditioner includes an indoor fan, a refrigerant leak detection device for detecting the amount of refrigerant leaking from the air conditioner, and a controller that, in response to the refrigerant leak detection device identifying an abnormal condition, controls the indoor fan to operate alternately at different fan speeds. The abnormal condition includes: refrigerant leakage in the air conditioner; and / or, malfunction of the refrigerant leak detection device. Thus, the air conditioner determines whether a refrigerant leak has occurred based on the refrigerant content of the air conditioner, ensuring the accuracy of refrigerant leak detection. Simultaneously, when a refrigerant leak occurs and / or the refrigerant leak detection device malfunctions, controlling the indoor fan to operate alternately at different fan speeds creates perceptible changes in fan speed, airflow, and indoor fan noise for the customer, effectively alerting them.

[0118] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing 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 (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0119] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0120] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions 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 one or more embodiments or examples.

[0121] 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 indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0122] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0123] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A control method for an air conditioner, characterized in that, 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, the indoor unit including an indoor fan, and the method comprising: In response to the refrigerant leak detection device identifying an abnormal condition, the indoor fan is controlled to operate alternately at different fan speeds; wherein, the abnormal condition includes: The air conditioner is experiencing a refrigerant leak; and / or, The refrigerant leak detection device malfunctioned. The control of the indoor fan to operate alternately at different wind speeds includes: When the abnormal condition is that the air conditioner leaks refrigerant, the indoor fan is controlled to run 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 leak detection device, the indoor fan is controlled to run 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; When the abnormal condition is a refrigerant leak in the air conditioner, before controlling the indoor fan to alternately operate at different fan speeds, the method further includes: Controlling the operation of the indoor fan to discharge leaked refrigerant from the indoor unit; the control of the operation of the indoor fan to discharge leaked refrigerant from the indoor unit includes: Control the indoor fan to run at the 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 remains so for a first detection time, the indoor fan is controlled to run 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 this detection continues for a second time, the indoor fan is controlled 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 this continues for a third detection time, the indoor fan is controlled to run at a seventh preset speed for a fourth preset time, wherein the seventh preset speed is less than the sixth preset speed; After controlling the indoor fan to run at a 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 remains so for the first detection time, the indoor fan is controlled 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 this detection continues for the second detection time, the indoor fan is controlled to operate at the sixth preset speed for the third preset time; and In response to the detection that the refrigerant content of the indoor unit is less than the second preset content and continues 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. After controlling the indoor fan to run 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 continues for the first detection time, the indoor fan is controlled to run 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 this detection continues for the second time, the indoor fan is controlled to run at the sixth preset speed for the third preset time. In response to the detection that the refrigerant content of the indoor unit is less than the second preset content and continues for the third detection time, it is determined that the emission is complete.

2. The method according to claim 1, characterized in that, Before controlling the indoor fan to alternately operate at different wind speeds, the method further includes: Control the air conditioner to operate in air supply mode.

3. A computer-readable storage medium, characterized in that, It stores the control program of the air conditioner, which, when executed by the processor, implements the control method of the air conditioner according to any one of claims 1-2.

4. An air conditioner, characterized in that, The device includes a memory, a processor, and a control program for an air conditioner stored in the memory and executable on the processor. When the processor executes the control program for the air conditioner, it implements the control method for the air conditioner according to any one of claims 1-2.

5. An air conditioner, characterized in that, include: An indoor unit and a refrigerant leak detection device, wherein the refrigerant leak detection device is used to detect the amount of refrigerant leaking from the air conditioner, and the indoor unit includes an indoor fan; The controller, in response to the refrigerant leak detection device identifying an abnormal condition, controls the indoor fan to operate alternately at different fan speeds; wherein the abnormal condition includes: the air conditioner experiencing a refrigerant leak; and / or, The refrigerant leak detection device malfunctioned. The control of the indoor fan to operate alternately at different wind speeds includes: When the abnormal condition is that the air conditioner leaks refrigerant, the indoor fan is controlled to run 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 leak detection device, the indoor fan is controlled to run 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; When the abnormal condition is a refrigerant leak in the air conditioner, before controlling the indoor fan to alternately run at different fan speeds... Controlling the operation of the indoor fan to discharge leaked refrigerant from the indoor unit; the control of the operation of the indoor fan to discharge leaked refrigerant from the indoor unit includes: Control the indoor fan to run at the 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 remains so for a first detection time, the indoor fan is controlled to run 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 this detection continues for a second time, the indoor fan is controlled 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 this continues for a third detection time, the indoor fan is controlled to run at a seventh preset speed for a fourth preset time, wherein the seventh preset speed is less than the sixth preset speed; After the indoor fan is controlled to run at the sixth preset speed for a third preset time... In response to detecting that the refrigerant content of the indoor unit is greater than or equal to the first preset content and remains so for the first detection time, the indoor fan is controlled 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 this detection continues for the second detection time, the indoor fan is controlled to operate at the sixth preset speed for the third preset time; and In response to the detection that the refrigerant content of the indoor unit is less than the second preset content and continues 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. After the indoor fan is controlled to run at the seventh preset speed for the fourth preset time. In response to detecting that the refrigerant content of the indoor unit is greater than or equal to the first preset content and continues for the first detection time, the indoor fan is controlled to run 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 this detection continues for the second time, the indoor fan is controlled to run at the sixth preset speed for the third preset time. In response to the detection that the refrigerant content of the indoor unit is less than the second preset content and continues for the third detection time, it is determined that the emission is complete.

Images