Air conditioner, control method thereof and computer readable storage medium

Abstract

The invention discloses an air conditioner and a control method thereof and a computer readable storage medium, the air conditioner comprises an indoor unit and a refrigerant leakage detection device, the refrigerant leakage detection device is used for detecting the refrigerant content leaked by the air conditioner, and the indoor unit comprises an indoor fan; the method comprises the following steps: in response to an abnormal condition recognized by a refrigerant leakage detection device, controlling an indoor fan to alternately operate according to different air speeds; wherein the abnormal condition comprises that the air conditioner has refrigerant leakage; and / or the refrigerant leakage detection device has a fault abnormity. According to the method, the accuracy of refrigerant leakage detection is guaranteed by obtaining the refrigerant content of the air conditioner, meanwhile, when refrigerant leakage of the air conditioner occurs and / or a refrigerant leakage detection device has faults and abnormities, an indoor fan is controlled to alternately operate according to different air speeds, so that a customer generates perception changes in somatosensory such as the air speed, the air volume and noise, and the customer experience is improved. The reminding purpose is achieved.

Description

Technical Field

[0001] The present invention 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

[0002] 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.

[0003] 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. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the first purpose of the present invention is to propose a control method for an air conditioner, which determines whether the air conditioner has a refrigerant leak based on the refrigerant content of the air conditioner, thereby ensuring the accuracy of the refrigerant leak detection. At the same time, when the air conditioner has a refrigerant leak and / or the refrigerant leak detection device fails abnormally, the indoor fan is controlled to alternately operate at different wind speeds, so that the customer has a physical perception change in wind speed, air volume, indoor fan air supply noise, etc., thereby achieving the purpose of effectively reminding the customer.

[0005] A second object of the present invention is to provide a computer-readable storage medium.

[0006] The third object of the present invention is to provide an air conditioner.

[0007] A fourth object of the present invention is to provide an air conditioner.

[0008] To achieve the above-mentioned purpose, a first aspect of an embodiment of the present invention proposes 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 control method for the air conditioner 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 comprises: refrigerant leakage in the air conditioner; and / or a malfunction of the refrigerant leakage detection device.

[0009] According to the control method of the air conditioner of the embodiment of the present invention, 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 by 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 alternately operate at different wind speeds; wherein the abnormal condition includes: refrigerant leakage in the air conditioner; and / or abnormal failure of the refrigerant leakage detection device. Therefore, the method determines whether the air conditioner has a refrigerant leakage based on the refrigerant content of the air conditioner, thereby ensuring the accuracy of the refrigerant leakage detection. At the same time, when the air conditioner has a refrigerant leakage and / or the refrigerant leakage detection device has an abnormal failure, the indoor fan is controlled to alternately operate at different wind speeds, so that the customer has a change in the perceived physical sense of wind speed, air volume, indoor fan air supply noise, etc., thereby achieving the purpose of effectively reminding the customer.

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

[0011] According to one embodiment of the present invention, 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.

[0012] According to one embodiment of the present invention, 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.

[0013] According to one embodiment of the present invention, the operation of the indoor fan is controlled to discharge the refrigerant leaked in the indoor unit, including: controlling the indoor fan to run 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 run 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 run 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 run 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 one 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 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.

[0015] According to one 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 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 first preset content and greater than or equal to the second preset content and lasts for a second detection time, determining that the discharge is completed.

[0016] According to an embodiment of the present invention, 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.

[0017] To achieve the above object, a second embodiment of the present invention provides 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.

[0018] According to the computer-readable storage medium of an embodiment of the present invention, the control program of the air conditioner stored thereon 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 refrigerant leakage occurs in the air conditioner and / or the refrigerant leakage detection device fails abnormally, 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.

[0019] To achieve the above-mentioned purpose, the third aspect of the present invention proposes 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, the above-mentioned air conditioner control method is implemented.

[0020] According to the air conditioner of the embodiment of the present invention, the control program of the air conditioner is executed by the processor to implement the control method of the air conditioner. Based on the control method of the air conditioner, the accuracy of refrigerant leakage detection is guaranteed. At the same time, when refrigerant leakage occurs in the air conditioner and / or the refrigerant leakage detection device fails abnormally, 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.

[0021] To achieve the above-mentioned purpose, the fourth aspect of the present invention proposes an air conditioner, comprising: 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 comprises an indoor fan; a controller is 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.

[0022] According to the air conditioner of the embodiment of the present invention, the indoor unit includes an indoor fan, and the refrigerant leakage detection device is used to detect the refrigerant content leaked by the air conditioner. The controller controls the indoor fan to alternately operate 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 abnormal failure of the refrigerant leakage detection device. Thus, the air conditioner determines whether the air conditioner has a refrigerant leakage based on the refrigerant content of the air conditioner, thereby ensuring the accuracy of the refrigerant leakage detection. At the same time, when the air conditioner has a refrigerant leakage and / or the refrigerant leakage detection device has an abnormal failure, the indoor fan is controlled to alternately operate at different wind speeds, so that the customer has a change in the perceived physical sense of wind speed, air volume, indoor fan air supply noise, etc., thereby achieving the purpose of effectively reminding the customer.

[0023] Additional aspects and advantages of the present invention 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 invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a flow chart of a method for controlling an air conditioner according to an embodiment of the present invention;

[0025] Figure 2 is a flow chart of a method for controlling an air conditioner according to a specific embodiment of the present invention;

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

[0027] Figure 4 FIG. 1 is a block diagram of an air conditioner according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, 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 invention, and should not be construed as limiting the present invention.

[0029] 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 invention with reference to the accompanying drawings.

[0030] Figure 1 FIG. 4 is a flow chart of a method for controlling an air conditioner according to an embodiment of the present invention.

[0031] 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 refrigerant content leaked from the air conditioner, and the indoor unit includes an indoor fan.

[0032] The air conditioner is an air conditioning system with a complete refrigeration cycle and includes at least one refrigerant leakage detection device. The refrigerant leakage detection device is a component developed based on the characteristics of the refrigerant and capable of detecting the content of flammable refrigerant. It can be composed of a refrigerant concentration sensor, a main board, and connecting wires. The refrigerant leakage detection device detects the refrigerant content at the installation location based on the refrigerant concentration sensor, and then feeds back the refrigerant content obtained by the detection to the controller of the air conditioner.

[0033] Specifically, the refrigerant leakage detection device can be installed near the gas-liquid pipeline welding of the heat exchanger of the air conditioner according to different heat exchanger structures, where the risk of refrigerant leakage is the greatest. If a refrigerant leakage occurs, the refrigerant leakage detection device can quickly detect and feedback information such as concentration. For example, the refrigerant leakage detection device can be set near the gas-liquid pipeline welding of the indoor heat exchanger of the indoor unit, so as to feedback the refrigerant content of the indoor unit to determine whether the indoor unit has a refrigerant leakage; the refrigerant leakage detection device can also be set near the gas-liquid pipeline welding of the outdoor heat exchanger of the outdoor unit, so as to feedback the refrigerant content of the outdoor unit to determine whether the outdoor unit has a refrigerant leakage.

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

[0035] 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.

[0036] The refrigerant content is used to indicate the amount of refrigerant in the space where the refrigerant is located, which 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 higher, thus ensuring the control accuracy.

[0037] Specifically, after the air conditioner is powered on, the refrigerant leakage detection device is powered on to obtain the refrigerant content, and the obtained refrigerant content is sent to the air conditioner controller. The air conditioner controller compares the obtained refrigerant content with the preset content threshold L0. When the refrigerant leakage detection device detects that the refrigerant content is less than the preset content threshold L0, it means that there is no refrigerant leakage, and the air conditioner maintains the original state. If there is a latest air conditioning instruction, it will operate according to the latest air conditioning instruction. 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 leakage, so the indoor fan is controlled to alternately operate at different wind speeds. For example, the indoor fan can be controlled to run at the maximum wind speed for t1 time, and then run at the minimum wind speed for t2 time, and then alternately operate in sequence, so as to remind customers to pay attention to the refrigerant leakage fault through the periodic changes in wind speed, air volume and indoor fan noise. It should be noted that, in addition to the above judgment conditions that when the refrigerant content is greater than or equal to the preset content threshold L0, the air conditioner is considered to have a refrigerant leak; when the refrigerant content is less than the preset content threshold L0, the air conditioner is considered not to have a refrigerant leak, it is also possible to 检测 When the time is reached, the air conditioner is considered to have refrigerant leakage, otherwise it is considered that the air conditioner has not had refrigerant leakage, and there is no restriction here.

[0038] In addition, in addition to the refrigerant content detection function, the refrigerant leakage detection device also has a self-check function for life and detection functions. When the refrigerant leakage detection device does not have a life warning or a detection function failure, it means that the refrigerant leakage 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 leakage detection device self-checks and finds a life warning or a detection function failure, it will feedback the corresponding information to the air conditioning controller. The air conditioning controller determines that the refrigerant leakage detection device is abnormal, and then controls the indoor fan to run alternately at different wind speeds to remind the device of abnormality. For example, after determining that the refrigerant leakage detection device is abnormal, 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 run alternately in sequence, so as to remind customers to pay attention to the functional failure of the refrigerant leakage detection device through periodic changes in wind speed, air volume and indoor fan noise.

[0039] 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 and other parameters can be set accordingly to distinguish the reminders. Assuming 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 leakage 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 leakage 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 continues, the second control strategy is used to control the indoor fan, and the cycle is repeated 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.

[0040] In addition, when the air conditioner has a refrigerant leak or the refrigerant leak detection device has an abnormality, the air conditioner controller can also control the display of the corresponding fault code and sound an alarm, and control the indoor fan to run alternately at different wind speeds to improve the reminder effect. For example, when the air conditioner is determined to have a refrigerant leak based on the refrigerant content, the air conditioner controller can control the display panel of the indoor unit to display the fault code M0 representing the refrigerant leak; when the refrigerant leak detection device has an abnormality, the air conditioner controller can control the display panel of the indoor unit to display the life alarm or the fault code F0 for the detection fault. In addition, the fault code can also be displayed through a mobile terminal, which is not limited here.

[0041] 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 acquired monitoring data can be fed back to the air-conditioning controller. The air-conditioning controller determines whether there is an abnormality in the refrigerant leakage detection device based on the acquired monitoring data.

[0042] 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 also includes: controlling the air outlet angle of the indoor unit to a preset angle.

[0043] That is, when the air conditioner leaks refrigerant or the refrigerant leakage detection device is abnormal, the air outlet angle of the indoor fan is adjusted to a preset angle to ensure the maximum air volume and improve the reminder effect. The preset angle can be set according to actual conditions.

[0044] 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 conditioner to operate in an air supply mode.

[0045] 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 modes, 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.

[0046] 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.

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

[0048] That is to say, when the air conditioner is powered on but not turned on, the refrigerant leakage detection device will be prioritized to self-check its life and detection function, as well as the refrigerant content of the air conditioner. Through the self-check and refrigerant content detection of the refrigerant leakage detection device before turning on, the risk of starting the air conditioner when the refrigerant leaks can be avoided. And when the air conditioner is turned off, the refrigerant leakage detection device will continue to self-check its life and detection function, as well as the refrigerant content of the air conditioner. That is, as long as the air conditioner is powered on, the life warning, function self-check, and refrigerant content detection of the refrigerant leakage detection device will continue to be performed.

[0049] 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 power is lost, and a new round of detection will be started after the air conditioner is powered on or restarted.

[0050] In one embodiment of the present application, the indoor fan is controlled to alternately operate at different wind speeds, including: when the abnormal condition is that the air conditioner has a refrigerant leak, the indoor fan is controlled to alternately operate at a first preset speed R1 and a second preset speed R2, and the first preset speed R1 is greater than the second preset speed R2; when the abnormal condition is that the refrigerant leakage detection device has a fault abnormality, the indoor fan is controlled to alternately operate at a third preset speed R3 and a fourth preset speed R4, and 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 can be understood that the higher the speed of the indoor fan, the greater the wind speed; the lower the speed, the lower the wind speed.

[0051] That is to say, when it is determined that the air conditioner has a refrigerant leak, the indoor fan is first controlled to run continuously for a preset time according to R1, and then for a preset time according to R2, and they are operated alternately in sequence; when it is determined that the refrigerant leakage detection device has a fault abnormality, the indoor fan can be first controlled to run continuously for a preset time according to R3, and then for a preset time according to R4, and they are operated alternately in sequence, thereby reminding customers to pay attention to the alarm fault through the periodic changes of wind speed, air volume, and indoor fan noise. At the same time, based on different wind speed settings, different periodic changes of wind speed, air volume, and indoor fan noise are generated to achieve different reminder effects, so that users can identify the fault type in time.

[0052] Furthermore, the first preset speed R1 may be the sum of the maximum speed Rmax of the indoor fan when the air conditioner is operating normally and the first speed ΔR1, and the second preset speed R2 may be the difference between the minimum speed Rmin of the indoor fan when the air conditioner is operating normally and the second speed ΔR2. The third preset speed R3 may be the sum of the maximum speed Rmax of the indoor fan when the air conditioner is operating normally and the first speed ΔR3, and the fourth preset speed R4 may be the difference between the minimum speed Rmin of the indoor fan when the air conditioner is operating normally and the second speed ΔR4. Thus, the use of the first preset speed R1 and the third preset speed R3, which are higher than the maximum speed Rmax of the indoor fan, may increase the fan noise abnormally, and then the fan noise may be alternately operated with the second preset speed R2 and the fourth preset speed R4, which are lower than the minimum speed Rmin of the indoor fan, respectively, to further highlight the size change of the indoor fan noise, and to improve the reminder effect in combination with the change of wind speed and air volume.

[0053] 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.

[0054] 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 operation of the indoor fan to discharge the leaked refrigerant in the indoor unit.

[0055] 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 small. 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 not good, 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 completed, and then control the indoor fan to run alternately at different wind speeds to provide a refrigerant leak reminder.

[0056] The refrigerant discharge process when refrigerant leakage occurs in the air conditioner is described in detail below.

[0057] In one embodiment of the present application, controlling the operation of the indoor fan to discharge the leaked refrigerant in the indoor unit includes: 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 of the indoor unit is greater than or equal to the first preset content L1 and lasts for a first detection time t 检测1 , 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 t 检测2 , the indoor fan is controlled to run 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 of the indoor unit is less than the second preset content L2 and lasts for a third detection time t 检测3 , control the indoor fan to run at the seventh preset speed R7 for the 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 检测1 , continue the second detection time t 检测2 , the third detection time t 检测3 It can be set according to the actual situation. The first detection time t 检测1, continue the second detection time t 检测2 , the third detection time t 检测3 Can also be zero.

[0058] Assume that the refrigerant leakage detection device is in the duration t 检测 When the refrigerant content Ln ≥ L0 of the indoor unit is detected, it is considered that the indoor unit has a refrigerant leak.

[0059] Specifically, when the refrigerant content Ln in the indoor unit is L0 or more and the duration is t 检测 When it is determined that a refrigerant leak occurs in the indoor unit, the indoor unit fan is first controlled to continuously run at a fifth preset speed R5 for a first preset time t1 to forcefully disperse the leaked refrigerant and prevent the refrigerant from gathering.

[0060] After the indoor unit fan continues to run 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:

[0061] If the duration 检测1 If the refrigerant content Ln≥L1 detected within the time, the indoor unit fan continues 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 is judged according to the latest refrigerant content information and the corresponding control process is executed.

[0062] If the duration 检测2 If the refrigerant content L2≤Ln<L1 is detected within the time, 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.

[0063] If the duration 检测3 If the refrigerant concentration Ln is detected to be less than L2 within the time, 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, and after running for t4 time, the refrigerant content is judged based on the latest refrigerant content information and the corresponding control process is executed.

[0064] 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.

[0065] That is, when it is determined that the indoor unit has a refrigerant leak, and when the refrigerant content Ln ≥ L1 and lasts for t 检测1 When the time comes, control the running speed of the indoor fan to increase 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 it from gathering.

[0066] When the refrigerant content L2≤Ln<L1 and lasts for t 检测2 When the time is up, continue to control the operating speed of the indoor fan 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 dispel the refrigerant leakage.

[0067] When the refrigerant content Ln is less than L2 and lasts for t 检测3 When the time comes, the indoor fan is controlled to run at a speed less than the minimum speed Rmin of the indoor fan, so as 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 whether the leaked refrigerant in the indoor unit has been discharged.

[0068] In one embodiment of the present application, after the indoor fan is controlled to run at the sixth preset speed R6 for the third preset time t3, 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 t 检测1 , 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 continues for the second detection time t 检测2 , control 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 t 检测3 First, the indoor fan is controlled to run at the sixth preset speed R6 for the third preset time t3, and then the indoor fan is controlled to run at the seventh preset speed R7 for the fourth preset time t4.

[0069] 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 the refrigerant discharge control is performed based on the latest refrigerant content.

[0070] Specifically, if the duration t 检测1If the refrigerant content Ln detected within the time is L1 or higher, the refrigerant content in the indoor unit increases, and the current rotation speed cannot meet the refrigerant diffusion requirement. The indoor unit fan is controlled to run at the fifth larger preset rotation speed R5 to forcefully disperse the refrigerant and reduce the refrigerant content. After running for t2 time, the control is judged based on the latest refrigerant content information.

[0071] If the duration 检测2 If the refrigerant content L2≤Ln<L1 is detected within the time, it is considered that the refrigerant content has not risen, and the indoor fan is controlled to maintain the current speed for t3 time, and after t3 time, the judgment and control are performed again according to the latest refrigerant content information. It should be noted that if the number of cycles of the indoor fan running at the sixth preset speed R6 for t3 time reaches the preset number of times, it is considered that the refrigerant dispersal effect of the sixth preset speed R6 is not good, and the indoor fan should be controlled to run at a higher speed to improve the refrigerant dispersal effect.

[0072] If the duration 检测3 If the refrigerant content Ln is detected to be less than L2 within the time, it is considered that the current refrigerant dissipation effect is better. To avoid the refrigerant content from rising again, the indoor fan continues 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.

[0073] In one embodiment of the present application, after the indoor fan is controlled to run at the seventh preset speed R7 for a 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 t 检测1 , control 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 continues for the second detection time t 检测2 , control 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 t 检测3 , confirm that the discharge is completed.

[0074] 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 emission control is performed according to the latest refrigerant content.

[0075] Specifically, if the duration t 检测1If the refrigerant content Ln ≥ L1 detected within the time, the refrigerant content in the indoor unit increases, and the current speed cannot meet the refrigerant diffusion requirement, 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, judgment and control are performed based on the latest refrigerant content information.

[0076] If the duration 检测2 If the refrigerant content L2≤Ln<L1 is detected within the time, it is considered that the refrigerant content in the indoor unit has risen, and the current rotation 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, it is judged and controlled based on the latest refrigerant content information.

[0077] If the duration 检测3 If the refrigerant content Ln is detected to be less than L2 within the time, 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 run alternately at different wind speeds to provide a refrigerant leakage reminder.

[0078] Therefore, this embodiment achieves the purpose of quickly reducing the leaked refrigerant content and solving the problem of accumulation of leaked refrigerant by controlling the speed of the indoor fan to change with the change of the refrigerant content. At the same time, by switching the speed of the indoor fan back and forth, the customer can perceive changes in wind speed, air volume, indoor air supply noise, etc., and discover refrigerant leakage problems in time.

[0079] 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.

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

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

[0082] S202, determining whether the refrigerant leakage detection device has a fault abnormality. If so, executing step S203; if not, executing step S204.

[0083] 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.

[0084] S204: Detect the refrigerant content Ln of the indoor unit by using 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 lasts for t 检测 If yes, go to step S206; if no, go to step S202.

[0086] 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.

[0087] S207, determining whether the refrigerant content Ln is greater than or equal to the first preset content L1 and lasts for a first detection time t 检测1 If yes, go to step S208; if no, go 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, determining whether the refrigerant content Ln is greater than or equal to the second preset content L2 and lasts for a second detection time t 检测2 If yes, go to step S210; if no, go to step S214.

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

[0091] S211, determining whether the refrigerant content Ln is greater than or equal to the first preset content L1 and lasts for a first detection time t 检测1 If yes, go to step S208; if no, go to step S212.

[0092] S212, determining whether the refrigerant content Ln is greater than or equal to the second preset content L2 and lasts for a second detection time t 检测2 If yes, go to step S210; if no, go to step S213.

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

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

[0095] S215, determining whether the refrigerant content Ln is greater than or equal to the first preset content L1 and lasts for a first detection time t 检测1 If yes, go to step S208; if no, go to step S216.

[0096] S216, determining whether the refrigerant content Ln is greater than or equal to the second preset content L2 and lasts for a second detection time t 检测2 If yes, go to step S210; if no, go to step S217.

[0097] S217, determining that the refrigerant leakage 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 provide a refrigerant leakage reminder.

[0098] 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.

[0099] Furthermore, the fault priority of refrigerant leakage is higher than the self-detection 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 at the same time, the refrigerant leakage in the indoor unit is discharged first, and after the refrigerant discharge is completed, the indoor fan operation is controlled according to the refrigerant leakage reminder strategy.

[0100] In summary, according to the control method of the air conditioner of the embodiment of the present invention, 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 by 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 alternately operate at different wind speeds; wherein the abnormal condition includes: refrigerant leakage in the air conditioner; and / or, abnormal failure of the refrigerant leakage detection device. Therefore, the method determines whether the air conditioner has a refrigerant leakage based on the refrigerant content of the air conditioner, thereby ensuring the accuracy of the refrigerant leakage detection. At the same time, when the air conditioner has a refrigerant leakage and / or the refrigerant leakage detection device has an abnormal failure, the indoor fan is controlled to alternately operate at different wind speeds, so that the customer has a change in the perceived physical sense of wind speed, air volume, indoor fan air supply noise, etc., thereby achieving the purpose of effectively reminding the customer.

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

[0102] The computer-readable storage medium of the embodiment of the present invention stores a control program of an air conditioner, and the control program of the air conditioner implements the above-mentioned control method of the air conditioner when executed by a processor.

[0103] According to the computer-readable storage medium of an embodiment of the present invention, the control program of the air conditioner stored thereon 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 refrigerant leakage occurs in the air conditioner and / or the refrigerant leakage detection device fails abnormally, 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.

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

[0105] like Figure 3 As shown, the air conditioner of the embodiment of the present invention 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.

[0106] According to the air conditioner of the embodiment of the present invention, the control program of the air conditioner is executed by the processor to implement the control method of the air conditioner. Based on the control method of the air conditioner, the accuracy of refrigerant leakage detection is guaranteed. At the same time, when refrigerant leakage occurs in the air conditioner and / or the refrigerant leakage detection device fails abnormally, 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.

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

[0108] like Figure 4 As shown, the air conditioner according to the embodiment of the present invention 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. The refrigerant leakage detection device 20 is used to detect the refrigerant content leaked from the air conditioner. The controller 20 is used to control the indoor fan 11 to alternately operate at different wind speeds in response to the refrigerant leakage detection device 20 identifying an abnormal condition; wherein the abnormal condition includes: refrigerant leakage in the air conditioner; and / or a fault abnormality in the refrigerant leakage 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 a refrigerant leakage in the air conditioner, the indoor fan 11 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 20, the indoor fan 11 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.

[0111] According to one embodiment of the present invention, when the abnormal condition is a 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.

[0112] According to one embodiment of the present invention, 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 run 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 run 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 run 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 run 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 the sixth preset speed for the third preset time, the controller 30 is also 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.

[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 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.

[0115] According to an embodiment of the present invention, 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.

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

[0117] According to the air conditioner of the embodiment of the present invention, the indoor unit includes an indoor fan, and the refrigerant leakage detection device is used to detect the refrigerant content leaked by the air conditioner. In response to the refrigerant leakage detection device identifying an abnormal condition, the controller controls the indoor fan to alternately operate at different wind speeds; wherein the abnormal condition includes: refrigerant leakage in the air conditioner; and / or abnormal failure of the refrigerant leakage detection device. Thus, the air conditioner determines whether the air conditioner has a refrigerant leakage based on the refrigerant content of the air conditioner, thereby ensuring the accuracy of the refrigerant leakage detection. At the same time, when the air conditioner has a refrigerant leakage and / or the refrigerant leakage detection device has an abnormal failure, the indoor fan is controlled to alternately operate at different wind speeds, so that the customer has a change in the perceived physical sense of wind speed, air volume, indoor fan air supply noise, etc., thereby achieving the purpose of effectively reminding the customer.

[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 specifically implemented in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection portion with one or more wirings (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, 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 in other suitable ways if necessary, and then stored in a computer memory.

[0119] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0120] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0121] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0122] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0123] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A method for controlling an air conditioner, characterized in that: The air conditioner comprises 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, the indoor unit comprises an indoor fan, and the method comprises: 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, characterized in that 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, characterized in that: 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, characterized in that 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, characterized in that 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, characterized in that 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 claim 1, characterized in that 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, characterized in that: An air conditioner control program is stored thereon, and when the air conditioner control program is executed by a processor, an air conditioner control method according to any one of claims 1-7 is implemented.

9. An air conditioner, characterized in that: The invention comprises a memory, a processor and a control program of an air conditioner which is stored in the memory and can be run on the processor. 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, characterized in that: include: 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; A controller, configured to control the indoor fan to alternately operate 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, The refrigerant leakage detection device fails abnormally.

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