Air conditioner self-cleaning control method, device, air conditioner and storage medium

Abstract

The present invention provides an air conditioner self-cleaning control method, device, air conditioner and storage medium, including: when it is determined that a target heating device in the air conditioner is in an operating state, receiving a first input from a user; the first input is used to turn on a first self-cleaning mode, and the target heating device is used to heat the flowing refrigerant; in response to the first input, controlling the opening and closing of the ports of a first three-way valve and a second three-way valve in the air conditioner to form a first refrigerant circulation loop, and executing the first self-cleaning mode to clean the indoor unit of the air conditioner; in the first refrigerant circulation loop, the path of the refrigerant circulating flow is compressor, condenser, target heating device, electronic expansion valve, evaporator, target heating device, compressor. The present invention can effectively improve the speed and efficiency of evaporator frosting, and at the same time can effectively prevent the liquid hammer phenomenon of the refrigerant on the compressor, improve the efficiency of the compressor, and thus can greatly improve the efficiency of the air conditioner self-cleaning.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to a self-cleaning control method and device for an air conditioner, an air conditioner and a storage medium. Background Art

[0002] After the air conditioner is placed or used for a long time, the dust accumulated on its indoor and outdoor units will gradually increase. When the dust accumulates to a certain level, it will affect the performance of the air conditioner and may even breed a large number of bacteria, affecting the health of the user. Therefore, the air conditioner needs to be cleaned in time.

[0003] In the prior art, the cleaning methods of air conditioners include manual cleaning and self-cleaning of the air conditioner. Manual cleaning is time-consuming and labor-intensive, and requires the various parts of the air conditioner to be disassembled for cleaning, and the various parts need to be reassembled after cleaning. Therefore, many air conditioners now have a self-cleaning function, but the existing self-cleaning control method generally has a slow frosting speed, resulting in a long self-cleaning process and low self-cleaning efficiency.

[0004] Therefore, how to better control the air conditioner to perform self-cleaning has become a technical problem that needs to be solved urgently in the industry. Summary of the invention

[0005] The present invention provides a self-cleaning control method and device for an air conditioner, an air conditioner and a storage medium, which are used to better control the air conditioner to perform self-cleaning.

[0006] The present invention provides a self-cleaning control method for an air conditioner, comprising:

[0007] In the case where it is determined that the target heating device in the air conditioner is in an operating state, receiving a first input from a user; the first input is used to start a first self-cleaning mode, and the target heating device is used to heat the inflowing refrigerant;

[0008] In response to the first input, controlling the opening and closing of ports of a first three-way valve and a second three-way valve in the air conditioner to form a first refrigerant circulation loop, and executing a first self-cleaning mode to clean the indoor unit of the air conditioner;

[0009] In the first refrigerant circulation loop, the path of the refrigerant circulation flow is the compressor, the condenser, the target heating device, the electronic expansion valve, the evaporator, the target heating device, and the compressor.

[0010] According to a self-cleaning control method for an air conditioner provided by the present invention, executing the first self-cleaning mode includes:

[0011] Entering the first frosting stage;

[0012] In the first frosting stage, the air conditioner performs refrigeration under the first refrigerant circulation circuit. The compressor operates at a first target frequency, the indoor unit fan is in a stopped state, and the outdoor unit fan is in an operating state. The target frequency is determined based on the outdoor ambient temperature.

[0013] When the operation duration in the first frosting stage exceeds a first duration threshold, it enters the first defrosting stage.

[0014] In the first defrosting stage, the indoor unit fan operates at the maximum wind speed and has an operating duration of a second duration threshold.

[0015] After the first defrosting stage ends, the first self-cleaning mode stops operating. The first self-cleaning mode includes the first frosting stage and the first defrosting stage.

[0016] According to an air conditioner self-cleaning control method provided by the present invention, before receiving the first input from the user, it further includes:

[0017] When the air conditioner is turned on, the target heating device is turned on and operates.

[0018] Receive a second input from the user, where the second input is used to turn on the refrigeration mode.

[0019] In response to the second input, control the opening and closing of the ports of the first three-way valve and the second three-way valve to form a second refrigerant circulation circuit and execute the refrigeration mode.

[0020] Wherein, under the second refrigerant circulation circuit, the path of the refrigerant circulating flow is the compressor, the condenser, the electronic expansion valve, the evaporator, the target heating device, and the compressor.

[0021] According to an air conditioner self-cleaning control method provided by the present invention, before receiving the first input from the user, it further includes:

[0022] When the air conditioner is turned on, the target heating device is turned on and operates.

[0023] Receive a third input from the user, where the third input is used to turn on the heating mode.

[0024] In response to the third input, control the opening and closing of the ports of the first three-way valve and the second three-way valve to form a third refrigerant circulation circuit and execute the heating mode.

[0025] Wherein, under the third refrigerant circulation circuit, the path of the refrigerant circulating flow is the compressor, the evaporator, the electronic expansion valve, the target heating device, the condenser, and the compressor.

[0026] According to an air conditioner self-cleaning control method provided by the present invention, after stopping the operation of the first self-cleaning mode, it further includes:

[0027] Starting the second frosting stage of the second self-cleaning mode;

[0028] When the operation duration of the second frosting stage exceeds a third duration threshold, entering the second defrosting stage of the second self-cleaning mode;

[0029] After the end of the second defrosting stage, stopping the operation of the second self-cleaning mode and recording the start time of the first self-cleaning mode;

[0030] Wherein, in the second frosting stage, the air conditioner performs heating under the first refrigerant circulation loop, the compressor operates at a second target frequency, the indoor unit fan operates at the maximum wind speed, and the outdoor unit fan is in a stopped operation state;

[0031] In the second defrosting stage, the outdoor unit fan operates at the maximum wind speed and takes a fourth duration threshold as the operation duration.

[0032] According to an air conditioner self-cleaning control method provided by the present invention, after recording the start time of the first self-cleaning mode, it further includes:

[0033] When it is determined that the target duration exceeds a fifth duration threshold, and the target heating device is in an operating state and the air conditioner is in a target mode, controlling the air conditioner to switch from the target mode to the first self-cleaning mode for operation; the target duration starts from the start time; the target mode includes a cooling mode or a heating mode;

[0034] After the operation of the first self-cleaning mode ends, controlling the air conditioner to operate the second self-cleaning mode;

[0035] After the operation of the second self-cleaning mode ends, controlling the air conditioner to switch back to the target mode.

[0036] According to an air conditioner self-cleaning control method provided by the present invention, it further includes:

[0037] When it is determined that the air conditioner is in a shutdown state and the cumulative duration since the last shutdown exceeds a sixth duration threshold, starting the operation of the air conditioner and starting the operation of the target heating device;

[0038] Controlling the air conditioner to sequentially operate the first self-cleaning mode and the second self-cleaning mode;

[0039] After the operation of the second self-cleaning mode ends, controlling the air conditioner to enter the shutdown state.

[0040] According to an air conditioner self-cleaning control method provided by the present invention, the target heating device is a solar heating device, and the solar heating device is used to heat the refrigerant flowing through it.

[0041] The present invention also provides an air conditioner self-cleaning control device, including:

[0042] An input module, configured to receive a first input from a user when it is determined that the target heating device in the air conditioner is in an operating state; the first input is used to turn on a first self-cleaning mode, and the target heating device is used to heat the inflowing refrigerant;

[0043] A control module, configured to, in response to the first input, control the opening and closing of the ports of the first three-way valve and the second three-way valve in the air conditioner to form a first refrigerant circulation loop, and execute the first self-cleaning mode to clean the indoor unit of the air conditioner;

[0044] Under the first refrigerant circulation loop, the path of the refrigerant circulating flow is: compressor, condenser, the target heating device, electronic expansion valve, evaporator, the target heating device, the compressor.

[0045] The present invention also provides an air conditioner, including a compressor, a four-way valve, a condenser, a first three-way valve, a second three-way valve, a target heating device, an electronic expansion valve, and an evaporator;

[0046] The first port of the first three-way valve is connected to the four-way valve through the condenser, the four-way valve is connected to the compressor, and the third port of the first three-way valve is respectively connected to one end of the electronic expansion valve and the third port of the target heating device; the other end of the electronic expansion valve is connected to one end of the evaporator;

[0047] The first port of the second three-way valve is connected to the compressor through the four-way valve, and the second port of the second three-way valve is connected to the second port of the target heating device;

[0048] The second port of the first three-way valve is connected to the first port of the target heating device; the third port of the second three-way valve is respectively connected to the other end of the evaporator and the fourth port of the target heating device;

[0049] It further includes a controller, and the controller includes a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, it implements the air conditioner self-cleaning control method as described in any one of the above.

[0050] The present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the air conditioner self-cleaning control method as described in any one of the above.

[0051] The present invention also provides a computer program product, including a computer program, and when the computer program is executed by a processor, it implements the air conditioner self-cleaning control method as described in any one of the above.

[0052] The air conditioner self-cleaning control method, device, air conditioner and storage medium provided by the present invention improve the internal pipeline structure of the air conditioner by adding a three-way valve and a heating device. When it is determined that the target heating device in the air conditioner is in an operating state, a first input from the user is received, and the first input is used to turn on the first self-cleaning mode; in response to the first input, the port opening and closing of the first three-way valve and the second three-way valve in the air conditioner are controlled to form a first refrigerant circulation loop, and the first self-cleaning mode is executed to clean the indoor unit of the air conditioner; under the first refrigerant circulation loop, the path of the refrigerant circulating flow is the compressor, the condenser, the target heating device, the electronic expansion valve, the evaporator, the target heating device, and the compressor, so that the target heating device heats the incoming refrigerant before the refrigerant flows into the evaporator, and at the same time heats the low-temperature and low-pressure refrigerant flowing out of the evaporator, so that the gas-liquid two-phase refrigerant in the saturated state can increase the flow rate of the gaseous refrigerant after absorbing heat, increase the temperature of the refrigerant, and can effectively improve the frosting speed and efficiency of the evaporator after entering the evaporator, and at the same time can effectively prevent the liquid hammer phenomenon of the refrigerant to the compressor, improve the efficiency of the compressor, and thus can greatly improve the efficiency of the air conditioner self-cleaning. Description of the Drawings

[0053] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0054] Figure 1 is a schematic structural diagram of the air conditioner provided by the present invention;

[0055] Figure 2 is a schematic flowchart of the air conditioner self-cleaning control method provided by the present invention;

[0056] Figure 3 is a schematic structural diagram of the air conditioner self-cleaning control device provided by the present invention;

[0057] Figure 4 is a schematic structural diagram of the controller in the air conditioner provided by the present invention. Detailed Embodiments

[0058] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without making creative efforts fall within the scope of protection of the present invention.

[0059] The following will be combined with Figures 1-4 Describe the self-cleaning control method, device, air conditioner and storage medium of the air conditioner of the present invention.

[0060] Figure 1 is a schematic structural diagram of the air conditioner provided by the present invention. As Figure 1 shown, the air conditioner includes a compressor 110, a four-way valve 120, a condenser 130, a first three-way valve 140, a second three-way valve 150, a target heating device 160, an electronic expansion valve 170 and an evaporator 180;

[0061] The first port 141 of the first three-way valve 140 is connected to the four-way valve 120 through the condenser 130. The four-way valve 120 is connected to the compressor 110. The third port 143 of the first three-way valve 140 is respectively connected to one end of the electronic expansion valve 170 and the third port 163 of the target heating device 160. The other end of the electronic expansion valve 170 is connected to one end of the evaporator 180;

[0062] The first port 151 of the second three-way valve 150 is connected to the compressor 110 through the four-way valve 120. The second port 152 of the second three-way valve 150 is connected to the second port 162 of the target heating device 160;

[0063] The second port 142 of the first three-way valve 140 is connected to the first port 161 of the target heating device 160. The third port 153 of the second three-way valve 150 is respectively connected to the other end of the evaporator 180 and the fourth port 164 of the target heating device 160.

[0064] In the embodiment of the present invention, when it is detected that the user turns on the refrigeration mode for operation, the first three-way valve connects its first port and third port, and the second three-way valve connects its first port and second port. At this time, the refrigerant circulates in turn through the compressor, condenser, electronic expansion valve, evaporator, target heating device, and compressor. By heating the low-temperature and low-pressure refrigerant coming out of the evaporator, the temperature of the refrigerant is increased. The gas-liquid two-phase refrigerant in the saturated state can become gaseous refrigerant after absorbing the heat of the target heating device, preventing the occurrence of liquid refrigerant, effectively preventing the liquid slugging phenomenon of the refrigerant to the compressor, protecting the compressor, improving the efficiency of the compressor at the same time, and reducing the energy consumption of the compressor;

[0065] When it is detected that the user starts the heating mode operation, the first three-way valve connects its first port and second port, and the second three-way valve connects its first port and third port. At this time, the refrigerant circulates in turn through the compressor, evaporator, electronic expansion valve, target heating device, condenser, and compressor. By heating the low-temperature and low-pressure refrigerant coming out after throttling by the electronic expansion valve, the gas-liquid two-phase refrigerant in a saturated state can become gaseous refrigerant after absorbing the heat of the target heating device, increasing the temperature of the refrigerant. Then, after entering the condenser, the heat exchange efficiency of the condenser can be improved, and at the same time, the efficiency of the compressor can be increased, reducing the energy consumption of the compressor.

[0066] Figure 2 It is a schematic flow chart of the air conditioner self-cleaning control method provided by the present invention, as Figure 2 shown, including:

[0067] Step 110, when it is determined that the target heating device in the air conditioner is in an operating state, receive the first input from the user; the first input is used to turn on the first self-cleaning mode, and the target heating device is used to heat the inflowing refrigerant;

[0068] Specifically, the target heating device described in the embodiments of the present invention is used to heat the inflowing refrigerant, and it can specifically adopt a heating device in the form of solar energy or an electric heating device.

[0069] In the embodiments of the present invention, when the air conditioner is started, the target heating device can be started synchronously for heating.

[0070] Optionally, in the embodiments of the present invention, the target heating device is a solar heating device, and the solar heating device is used to heat the flowing refrigerant.

[0071] In the embodiments of the present invention, by adopting solar heating technology and making full use of rich solar energy resources to heat the refrigerant in the air conditioner, the purpose of green environmental protection and energy conservation and emission reduction can be achieved.

[0072] The first input described in the embodiments of the present invention refers to the user operation for turning on the first self-cleaning mode.

[0073] Among them, the first input can be manifested in at least one of the following ways:

[0074] First, the first input can be manifested as a touch input, including but not limited to operations such as click input, slide input, and press input.

[0075] In this embodiment, through wireless interconnection, the operation of the air conditioner can be controlled by the user's electronic device. Receiving the first input from the user can be manifested as receiving the first input from the user in the display area of the electronic device display screen, and then automatically sending the first input to the air conditioner. The controller of the air conditioner can receive the first input from the user.

[0076] Second, the first input can be manifested as an input through a physical button.

[0077] In this embodiment, a physical button for triggering the air conditioner to start the first self-cleaning mode can be provided on the terminal device for controlling the air conditioner. Receiving the first input from the user can be manifested as receiving the first input from the user pressing the corresponding physical button on the electronic device, and then automatically sending the first input to the air conditioner. The controller of the air conditioner can receive the first input from the user.

[0078] Third, the first input can be manifested as a voice input.

[0079] In this embodiment, the air conditioner can be pre-set with a voice interaction module to conduct voice interaction with the user. It can receive the user's voice, such as voices like "start self-cleaning", etc., to implement the first input and send the first input to the air conditioner.

[0080] Of course, in other embodiments, the first input can also be manifested in other forms, which can be specifically determined according to actual needs, and the embodiments of the present invention do not limit this.

[0081] The method of the embodiments of the present invention can trigger the air conditioner to start the first self-cleaning mode by receiving the first input from the user, realizing the user's autonomous control of the air conditioner cleaning, facilitating the user to control the frequency of the air conditioner self-cleaning according to personal needs, and being beneficial to improving the user experience.

[0082] Step 120, in response to the first input, control the opening and closing of the ports of the first three-way valve and the second three-way valve in the air conditioner to form a first refrigerant circulation circuit, and execute the first self-cleaning mode to clean the indoor unit of the air conditioner;

[0083] Under the first refrigerant circulation circuit, the path of the refrigerant circulating flow is compressor, condenser, target heating device, electronic expansion valve, evaporator, target heating device, compressor.

[0084] Specifically, the first self-cleaning mode described in the embodiments of the present invention refers to the mode of controlling the air conditioner to perform self-cleaning on the indoor unit.

[0085] The first three-way valve and the second three-way valve described in the embodiments of the present invention are two preset three-way valves, where, for example Figure 1As shown, the first three-way valve is disposed between the condenser and the electronic expansion valve, and the second three-way valve is disposed between the four-way valve and the evaporator, which is used to control the refrigerant flow circulation loop so that the refrigerant can be heated by the target heating device.

[0086] In the embodiment of the present invention, by controlling the opening and closing of the ports of the first three-way valve and the second three-way valve, the first three-way valve connects its first port and second port, and the second three-way valve connects its first port and second port. Thus, the path of the refrigerant circulating flow is compressor, condenser, target heating device, electronic expansion valve, evaporator, target heating device, compressor, forming the first refrigerant circulation loop.

[0087] Further, in response to the first input, control the opening and closing of the ports of the first three-way valve and the second three-way valve in the air conditioner to form the first refrigerant circulation loop, and execute the first self-cleaning mode under the first refrigerant circulation loop, so that when the air conditioner performs self-cleaning operation, the frosting control process and defrosting control process in the self-cleaning mode can be effectively realized, thereby cleaning the indoor unit of the air conditioner.

[0088] The method of the embodiment of the present invention improves the internal pipeline structure of the air conditioner by adding a three-way valve and a heating device. When it is determined that the target heating device in the air conditioner is in an operating state, receive the first input of the user, and the first input is used to turn on the first self-cleaning mode; in response to the first input, control the opening and closing of the ports of the first three-way valve and the second three-way valve in the air conditioner to form the first refrigerant circulation loop, and execute the first self-cleaning mode to clean the indoor unit of the air conditioner; under the first refrigerant circulation loop, the path of the refrigerant circulating flow is compressor, condenser, target heating device, electronic expansion valve, evaporator, target heating device, compressor, so that the target heating device heats the incoming refrigerant before the refrigerant flows into the evaporator, and at the same time heats the low-temperature and low-pressure refrigerant flowing out of the evaporator, so that the saturated gas-liquid two-phase refrigerant can increase the flow rate of the gaseous refrigerant after absorbing heat, increase the temperature of the refrigerant, and can effectively improve the frosting speed and efficiency of the evaporator after entering the evaporator. At the same time, it can effectively prevent the liquid hammer phenomenon of the refrigerant on the compressor, improve the efficiency of the compressor, and thus can greatly improve the self-cleaning efficiency of the air conditioner.

[0089] Based on the content of the above embodiment, as an optional embodiment, executing the first self-cleaning mode includes:

[0090] Enter the first frosting stage;

[0091] In the first frosting stage, the air conditioner performs refrigeration under the first refrigerant circulation loop, the compressor operates at the first target frequency, the indoor unit fan is in a stopped state, and the outdoor unit fan is in an operating state. The target frequency is determined based on the outdoor ambient temperature;

[0092] When the operation duration in the first frosting stage exceeds the first duration threshold, enter the first defrosting stage;

[0093] In the first defrosting stage, the indoor unit fan operates at the maximum wind speed and uses the second duration threshold as the operation duration;

[0094] After the first defrosting stage ends, stop operating the first self-cleaning mode; The first self-cleaning mode includes the first frosting stage and the first defrosting stage.

[0095] Specifically, in the embodiments of the present invention, the first self-cleaning mode includes the first frosting stage and the first defrosting stage. That is to say, the first frosting stage refers to the frosting stage of the first self-cleaning mode, and the first defrosting stage refers to the defrosting stage of the first self-cleaning mode.

[0096] The first target frequency described in the embodiments of the present invention refers to the initial operation frequency of the compressor when the first self-cleaning mode is turned on, which is determined based on the outdoor ambient temperature; Specifically, in the embodiments of the present invention, when the outdoor ambient temperature is greater than or equal to 22°C, the first target frequency can be 85 Hz; when the outdoor ambient temperature is less than 22°C, the first target frequency can be 80 Hz.

[0097] The first duration threshold described in the embodiments of the present invention refers to the preset threshold for the operation duration of the first frosting stage, and its specific value range can be 10 to 20 minutes.

[0098] The second duration threshold described in the embodiments of the present invention refers to the preset threshold for the operation duration of the first defrosting stage, and its specific value range can be 0.5 to 1 minute.

[0099] Further, in the embodiments of the present invention, when the first self-cleaning mode is executed, enter the first frosting stage: In the first frosting stage, the air conditioner performs refrigeration in the first refrigerant circulation circuit, the compressor operates at the first target frequency, the indoor unit fan is in a stopped state, and the outdoor unit fan is in an operating state, which can effectively accelerate the frosting time of the indoor unit self-cleaning;

[0100] When the operation duration in the first frosting stage exceeds the first duration threshold, enter the first defrosting stage: In the first defrosting stage, the indoor unit fan operates at the maximum wind speed and uses the second duration threshold as the operation duration, which can effectively accelerate the defrosting time of the indoor unit self-cleaning, so as to perform rapid defrosting and efficient dust removal in the first self-cleaning mode.

[0101] Further, in the embodiments of the present invention, after the first defrosting stage ends, stop operating the first self-cleaning mode.

[0102] In a specific embodiment of the present invention, in the case of summer refrigeration, when the air conditioner is in the refrigeration state, after starting the air conditioner to enter the first frosting stage of the first self-cleaning mode, if the outdoor ambient temperature is greater than or equal to 22°C at this time, the compressor of the air conditioner operates at the first target frequency (such as 85 Hz), and refrigerates under the first refrigerant circulation circuit. At the same time, the indoor unit fan stops, and the outdoor unit fan rotates normally. After the operation time in the first frosting stage exceeds the first duration threshold, such as 15 minutes, the air conditioner enters the first defrosting stage, then the indoor unit fan is turned on to operate at the maximum wind speed for 0.5 minutes, and then the self-cleaning of the indoor unit ends.

[0103] In another specific embodiment of the present invention, in the case of winter heating, when the air conditioner is in the heating state, at this time, by controlling the compressor to adjust the frequency to the target frequency value (such as 45 Hz) within a predetermined time (such as 1.5 minutes), the value range of the target frequency value can be 40 Hz to 50 Hz. By controlling the compressor to operate at a low frequency, it is convenient for the four-way valve to reverse, adjust the air conditioner to the refrigeration mode, and make the air conditioner in the refrigeration state. After starting the air conditioner to enter the first frosting stage of the first self-cleaning mode, if the outdoor ambient temperature is less than 22°C at this time, the compressor of the air conditioner operates at the first target frequency (such as 80 Hz), and refrigerates under the first refrigerant circulation circuit. At the same time, the indoor unit fan stops, and the outdoor unit fan rotates normally. After the operation time in the first frosting stage exceeds the first duration threshold, such as 15 minutes, the air conditioner enters the first defrosting stage. To increase the defrosting time in winter, the compressor can be controlled to adjust the frequency to the target frequency value within a predetermined time (such as 1.5 minutes), which is convenient for the four-way valve to reverse, the air conditioner is adjusted to the heating mode, then the indoor unit fan is turned on to operate at the maximum wind speed for 0.5 minutes, and then the self-cleaning of the indoor unit ends.

[0104] It should be noted that the refrigeration state described in the embodiments of the present invention refers to the state in which the air conditioner is in the refrigeration mode through the reversal of the four-way valve. For example, when the air conditioner is operating in the refrigeration mode and shuts down and exits the refrigeration mode, the air conditioner will still be in the refrigeration state.

[0105] The method of the embodiments of the present invention sets the operating parameters for the frosting stage and the defrosting stage in the self-cleaning mode of the indoor unit, so that the air conditioner can be finely controlled under the first refrigerant circulation circuit, thereby more accurately and effectively controlling the operation of the air conditioner in the self-cleaning mode of the indoor unit, which is beneficial to accelerating the frosting time and defrosting time of the self-cleaning mode of the indoor unit and improving the self-cleaning efficiency of the air conditioner.

[0106] Based on the content of the above embodiments, as an optional embodiment, after stopping the operation of the first self-cleaning mode, it further includes:

[0107] The second frosting stage of the second self-cleaning mode;

[0108] When the running duration of the second frosting stage exceeds the third duration threshold, enter the second defrosting stage of the second self-cleaning mode;

[0109] After the second defrosting stage ends, stop running the second self-cleaning mode and record the start time of the first self-cleaning mode;

[0110] Wherein, in the second frosting stage, the air conditioner heats under the first refrigerant circulation circuit, the compressor operates at the second target frequency, the indoor unit fan operates at the maximum wind speed, and the outdoor unit fan is in a stopped state;

[0111] In the second defrosting stage, the outdoor unit fan operates at the maximum wind speed and has an operating duration of the fourth duration threshold.

[0112] Specifically, in the embodiments of the present invention, the second self-cleaning mode includes a second frosting stage and a second defrosting stage. That is to say, the second frosting stage refers to the frosting stage of the second self-cleaning mode, and the second defrosting stage refers to the defrosting stage of the second self-cleaning mode.

[0113] The second target frequency described in the embodiments of the present invention refers to the initial operating frequency of the compressor when the second self-cleaning mode is turned on, and it is also determined based on the outdoor ambient temperature. Specifically, in the embodiments of the present invention, when the outdoor ambient temperature is greater than or equal to 16°C, the second target frequency can be 80Hz; when the outdoor ambient temperature is greater than or equal to 5°C and less than 16°C, the second target frequency can be 85Hz; when the outdoor ambient temperature is less than 5°C, the second target frequency can be 0Hz, that is, the compressor stops operating. At this time, only the indoor unit is self-cleaned, and the outdoor unit is not self-cleaned.

[0114] The third duration threshold described in the embodiments of the present invention refers to the preset threshold of the running duration of the second frosting stage, and its specific value range can also be 13 to 20 minutes.

[0115] The fourth duration threshold described in the embodiments of the present invention refers to the preset threshold of the running duration of the second defrosting stage, and it is also the running duration threshold of the outdoor unit fan in the second defrosting stage. Its specific value range can be 0.5 to 1 minute.

[0116] Further, in the embodiments of the present invention, after stopping running the first self-cleaning mode, execute the second self-cleaning mode and enter the second frosting stage:

[0117] In the second frosting stage, by reducing the operating frequency of the compressor and adjusting the reversing of the four-way valve, the air conditioner is switched from the previous cooling mode to the heating mode, so that the air conditioner performs heating under the first refrigerant circulation circuit. Then, the compressor is adjusted to operate at a second target frequency, the indoor unit fan operates at the maximum wind speed, and the outdoor unit fan is in a stopped operating state, which can effectively accelerate the frosting time of the self-cleaning of the outdoor unit;

[0118] When the operating duration in the second frosting stage exceeds the third duration threshold, it enters the second defrosting stage: In the second defrosting stage, the outdoor unit fan operates at the maximum wind speed and operates for a fourth duration threshold, which can effectively accelerate the defrosting time of the self-cleaning of the outdoor unit, so as to perform rapid defrosting in the second self-cleaning mode and perform efficient dust removal.

[0119] Furthermore, in the embodiment of the present invention, after the second defrosting stage ends, the second self-cleaning mode is stopped, and the start time of the first self-cleaning mode is recorded, so as to regularly perform self-cleaning on the air conditioner.

[0120] In a specific embodiment of the present invention, in the case of summer cooling, after the self-cleaning of the indoor unit ends, the compressor can be controlled to adjust its frequency to the target frequency value within a predetermined time (such as 1.5 minutes), which is convenient for the four-way valve to reverse, and the air conditioner is adjusted to the heating mode to realize the frosting control process of the self-cleaning of the outdoor unit. Then, the compressor is adjusted to operate at a second target frequency (such as 80 Hz), the indoor unit fan operates at the maximum wind speed, and the outdoor unit fan is in a stopped operating state. When the operating duration in the second frosting stage exceeds the third duration threshold (such as 15 minutes), it enters the second defrosting stage. In the second defrosting stage, the outdoor unit fan operates at the maximum wind speed for 0.5 minutes, and then the air conditioner is controlled to stop and exit the self-cleaning mode. At the same time, the first three-way valve is controlled to connect its first port and third port, and the second three-way valve is controlled to connect its first port and third port to restore the state at the time of shutdown. At the same time, the start time of this self-cleaning is recorded, that is, the start time of the first self-cleaning mode is recorded.

[0121] In another specific embodiment of the present invention, in the case of heating in winter, after the self-cleaning of the indoor unit is completed, it enters the second frosting stage of the second self-cleaning mode. The air conditioner can be adjusted to the heating mode by controlling the compressor to operate at a low frequency and reversing the four-way valve, so that the air conditioner is in the heating state to realize the frosting control process of the outdoor unit self-cleaning. Furthermore, adjust the compressor to operate at a second target frequency (such as 85 Hz), the indoor unit fan operates at the maximum wind speed, and the outdoor unit fan is in the stopped state. At the same time, in order to accelerate the frosting time, the opening of the electronic expansion valve can also be increased, and the range of increase in the opening threshold can be 50 to 100 steps. When the operation duration in the second frosting stage exceeds the third duration threshold (such as 15 minutes), it enters the second defrosting stage. In the second defrosting stage, the outdoor unit fan operates at the maximum wind speed for 0.5 minutes, then controls the air conditioner to stop, exits the self-cleaning mode, and controls the first three-way valve to connect its first port and third port, and the second three-way valve to connect its first port and third port, to restore the state at the time of shutdown, and at the same time record the start time of the first self-cleaning mode.

[0122] The method of the embodiment of the present invention realizes the outdoor unit self-cleaning function by setting the operating parameters of the frosting stage and the defrosting stage in the second self-cleaning mode, and at the same time sets the air conditioner to perform fine control under the first refrigerant circulation circuit, so as to more accurately and effectively control the operation of the air conditioner in the outdoor unit self-cleaning mode, which is beneficial to accelerating the frosting time and defrosting time of the outdoor unit self-cleaning mode, and further improving the efficiency of the air conditioner self-cleaning.

[0123] Based on the content of the above embodiments, as an alternative embodiment, before receiving the first input from the user, it further includes:

[0124] When the air conditioner is turned on, turn on the target heating device to operate;

[0125] Receive the second input from the user, and the second input is used to turn on the cooling mode;

[0126] In response to the second input, control the opening and closing of the ports of the first three-way valve and the second three-way valve to form a second refrigerant circulation circuit and execute the cooling mode;

[0127] Wherein, in the second refrigerant circulation circuit, the path of the refrigerant circulating flow is the compressor, the condenser, the electronic expansion valve, the evaporator, the target heating device, and the compressor.

[0128] Specifically, the second input described in the embodiment of the present invention refers to the user operation for turning on the cooling mode of the air conditioner.

[0129] In an embodiment of the present invention, the specific implementation manner of the second input may be the same as that of the first input. That is to say, the second input may be manifested as at least one of the three manners of the aforementioned first input, which will not be elaborated here. The embodiments of the present invention do not specifically limit the implementation manner of the second input.

[0130] In an embodiment of the present invention, by controlling the opening and closing of the ports of the first three-way valve and the second three-way valve, the first three-way valve is connected to its first port and third port, and the second three-way valve is connected to its first port and second port. Thus, the path for the refrigerant to circulate is compressor, condenser, electronic expansion valve, evaporator, target heating device, compressor, forming a second refrigerant circulation circuit.

[0131] Further, in an embodiment of the present invention, in response to the second input, the opening and closing of the ports of the first three-way valve and the second three-way valve are controlled to form a second refrigerant circulation circuit, and the cooling mode of the air conditioner is executed under the second refrigerant circulation circuit.

[0132] The method of the embodiment of the present invention can heat the low-temperature and low-pressure refrigerant coming out of the evaporator when the cooling mode is running by adding a target heating device and a three-way valve, improve the temperature of the refrigerant, so that the gas-liquid two-phase refrigerant in the saturated state can become gaseous refrigerant after absorbing heat, prevent the occurrence of liquid refrigerant, effectively prevent the liquid slugging phenomenon of the refrigerant to the compressor, protect the compressor, improve the efficiency of the compressor at the same time, reduce the energy consumption of the compressor, and thus can effectively improve the cooling efficiency of the air conditioner.

[0133] Based on the content of the above embodiments, as an alternative embodiment, before receiving the first input from the user, it further includes:

[0134] When the air conditioner is turned on, turn on the target heating device to run;

[0135] Receive a third input from the user, where the third input is used to turn on the heating mode;

[0136] In response to the third input, control the opening and closing of the ports of the first three-way valve and the second three-way valve to form a third refrigerant circulation circuit and execute the heating mode;

[0137] Wherein, under the third refrigerant circulation circuit, the path for the refrigerant to circulate is compressor, evaporator, electronic expansion valve, target heating device, condenser, compressor.

[0138] Specifically, the third input described in the embodiment of the present invention refers to the user operation for turning on the heating mode of the air conditioner.

[0139] In an embodiment of the present invention, the specific implementation manner of the third input may be the same as that of the first input. That is to say, the third input may be manifested as at least one of the three manners of the aforementioned first input, which will not be elaborated herein. The embodiment of the present invention does not specifically limit the implementation manner of the third input.

[0140] In an embodiment of the present invention, by controlling the opening and closing of the ports of the first three-way valve and the second three-way valve, the first three-way valve is connected to its first port and second port, and the second three-way valve is connected to its first port and third port. Thus, the path of the refrigerant circulating flow is compressor, evaporator, electronic expansion valve, target heating device, condenser, compressor, forming a third refrigerant circulation loop.

[0141] Further, in an embodiment of the present invention, in response to the third input, the opening and closing of the ports of the first three-way valve and the second three-way valve are controlled to form a third refrigerant circulation loop, and the heating mode of the air conditioner is executed under the third refrigerant circulation loop.

[0142] The method of the embodiment of the present invention can heat the low-temperature and low-pressure refrigerant coming out after throttling by the electronic expansion valve when the heating mode is running by adding a target heating device and a three-way valve, so that the gas-liquid two-phase refrigerant in the saturated state becomes a gaseous refrigerant after absorbing heat, increasing the temperature of the refrigerant. Then, after entering the condenser, the heat exchange efficiency of the condenser can be improved, and at the same time, the efficiency of the compressor can be increased, reducing the energy consumption of the compressor, thereby effectively improving the heating efficiency of the air conditioner.

[0143] Based on the content of the above embodiment, as an optional embodiment, after recording the start time of the first self-cleaning mode, it further includes:

[0144] When it is determined that the target duration exceeds the fifth duration threshold and the target heating device is in the running state and the air conditioner is in the target mode, control the air conditioner to switch from the target mode to the first self-cleaning mode for operation; the target duration starts from the start time; the target mode includes the cooling mode or the heating mode;

[0145] After the first self-cleaning mode operation ends, control the air conditioner to operate the second self-cleaning mode;

[0146] After the second self-cleaning mode operation ends, control the air conditioner to switch back to the target mode.

[0147] Specifically, the target duration described in the embodiment of the present invention refers to the cumulative operation duration of the air conditioner starting from the start time of the first self-cleaning mode.

[0148] The fifth duration threshold described in the embodiment of the present invention refers to a preset duration threshold, and its specific value range may be 45 to 60 days.

[0149] The target mode described in the embodiments of the present invention may include a refrigeration mode or a heating mode.

[0150] Further, in the embodiments of the present invention, after recording the start time of the first self-cleaning mode, when it is determined that the target duration exceeds the fifth duration threshold and the target heating device is in an operating state, and the air conditioner is in the target mode, that is, the cumulative operating duration of the air conditioner has exceeded the fifth duration threshold. At this time, the air conditioner will automatically switch the current target mode to the first self-cleaning mode for operation, execute the first self-cleaning mode, and perform self-cleaning on the indoor unit.

[0151] Further, in the embodiments of the present invention, after the first self-cleaning mode operation ends, control the air conditioner to operate in the second self-cleaning mode to perform self-cleaning on the outdoor unit; after the second self-cleaning mode ends, it means that both the indoor unit and the outdoor unit have been cleaned. At this time, control the air conditioner to switch back to the previous target mode. Thus, the automatic startup self-cleaning function can be realized.

[0152] In a specific embodiment of the present invention, in the case of summer refrigeration, when it is determined that the air conditioner is operating in the target mode of the refrigeration mode and the cumulative operating time of the air conditioner exceeds 50 days, control the air conditioner to automatically start the startup self-cleaning program. At this time, the air conditioner operates in the refrigeration state. After the air conditioner enters the first frosting stage of the first self-cleaning mode, control the compressor to operate at the self-cleaning operating frequency, that is, the first target frequency, control the first three-way valve and the second three-way valve to form the first refrigerant circulation circuit, and perform refrigeration under the first refrigerant circulation circuit. At this time, the indoor unit fan stops, and the outdoor unit fan rotates normally. After the operating time in the first frosting stage exceeds the first duration threshold, such as running for 15 minutes, the air conditioner enters the first defrosting stage, then turn on the indoor unit fan to run at the maximum wind speed for 0.5 minutes, and then the self-cleaning of the indoor unit ends.

[0153] After the self-cleaning of the indoor unit ends, the operating frequency of the compressor can be adjusted to the target frequency value by control, the four-way valve is commutated, and the air conditioner is adjusted to the heating mode to realize the frosting control process of the self-cleaning of the outdoor unit; then adjust the compressor to operate at the second target frequency (such as 80 Hz), the indoor unit fan runs at the maximum wind speed, and the outdoor unit fan is in a stopped operating state. When the operating duration in the second frosting stage exceeds the third duration threshold (such as 15 minutes), enter the second defrosting stage. In the second defrosting stage, the outdoor unit fan runs at the maximum wind speed for 0.5 minutes to dry, and then exits the self-cleaning mode, and control the first three-way valve to connect its first port and third port, and the second three-way valve to connect its first port and second port, and restore the state in the refrigeration mode, and continue to operate according to the previously set refrigeration mode of the air conditioner, and at the same time record the start time of the first self-cleaning mode this time.

[0154] In another specific embodiment of the present invention, in the case of heating in winter, when it is determined that the air conditioner is operating in the target mode of heating mode and the cumulative operating time of the air conditioner exceeds 50 days, the air conditioner is controlled to automatically start the self-cleaning program at startup. After entering the first frosting stage of the first self-cleaning mode, at this time, the air conditioner is in the heating state. By controlling the compressor frequency to be adjusted to the target frequency value and the four-way valve to change direction, the air conditioner is adjusted to the cooling mode, so that the air conditioner is in the cooling state; then the compressor of the air conditioner operates at the first target frequency (such as 80 Hz), the first three-way valve and the second three-way valve are controlled to form a first refrigerant circulation loop, and cooling is carried out under the first refrigerant circulation loop. At the same time, the indoor unit fan stops and the outdoor unit fan rotates normally. When the operating time in the first frosting stage exceeds the first duration threshold, such as 15 minutes, the air conditioner enters the first defrosting stage. To increase the defrosting time in winter, the compressor operating frequency can be controlled to decrease, the four-way valve changes direction, the air conditioner is adjusted to the heating mode, and then the indoor unit fan is turned on to run at the maximum wind speed for 0.5 minutes. After that, the self-cleaning of the indoor unit ends;

[0155] After the self-cleaning of the indoor unit ends, the air conditioner is still in the heating mode and in the heating state, and the frosting control process for the self-cleaning of the outdoor unit can be realized. Entering the second frosting stage of the second self-cleaning mode, the compressor is adjusted to operate at the second target frequency (such as 85 Hz), the indoor unit fan runs at the maximum wind speed, and the outdoor unit fan is in the stopped operating state. At the same time, in order to accelerate the frosting time, the opening of the electronic expansion valve can also be increased, and the range of increase in the opening threshold can be 50 to 100 steps; when the operating duration in the second frosting stage exceeds the third duration threshold (such as 15 minutes), the second defrosting stage is entered. In the second defrosting stage, the outdoor unit fan runs at the maximum wind speed and runs for 0.5 minutes to dry, and then exits the self-cleaning mode. The first three-way valve is controlled to connect its first port and second port, and the second three-way valve is controlled to connect its first port and third port to restore the state in the heating mode and continue to operate according to the previously set heating mode of the air conditioner. At the same time, the start time of the first self-cleaning mode this time is recorded.

[0156] The method of the embodiment of the present invention automatically starts the self-cleaning mode by setting the fifth duration threshold when it is determined that the cumulative operating duration of the air conditioner exceeds the fifth duration threshold, realizes the regular automatic self-cleaning of the air conditioner, enables the air conditioner to continuously maintain a clean state, is beneficial to improving the user experience. After the self-cleaning ends, it automatically exits the self-cleaning mode and switches to the operating mode previously selected by the user, without affecting the normal use of the user, and the user experience is good.

[0157] Based on the content of the above embodiment, as an optional embodiment, it further includes:

[0158] When it is determined that the air conditioner is in the shutdown state and the cumulative duration since the last shutdown exceeds the sixth duration threshold, turn on the operation of the air conditioner and turn on the operation of the target heating device;

[0159] Control the air conditioner to operate in the first self-cleaning mode and the second self-cleaning mode in sequence;

[0160] After the operation of the second self-cleaning mode ends, control the air conditioner to enter the shutdown state.

[0161] Specifically, the sixth duration threshold described in the embodiments of the present invention refers to a preset duration threshold, and its specific value range can be 80 to 100 days.

[0162] Further, in the embodiments of the present invention, when it is determined that the air conditioner is in the shutdown state and the cumulative duration since the last shutdown exceeds the sixth duration threshold, that is to say, the duration of the air conditioner in the shutdown state since the last shutdown has exceeded the sixth duration threshold. At this time, the operation of the air conditioner can be turned on and the operation of the target heating device can be turned on; furthermore, control the air conditioner to operate in the first self-cleaning mode and the second self-cleaning mode to fully clean the indoor unit and the outdoor unit, and after the operation of the second self-cleaning mode ends, that is, after the cleaning of the indoor unit and the outdoor unit is completed, control the air conditioner to return to the previous state, that is, enter the shutdown state.

[0163] The method of the embodiments of the present invention, by setting the sixth duration threshold, automatically turns on the self-cleaning mode when it is determined that the cumulative duration since the last shutdown exceeds the sixth duration threshold, realizes the regular automatic self-cleaning of the air conditioner in the shutdown state, enables the air conditioner to continuously maintain a clean state, provides a clean state for the next use of the air conditioner, ensures the comfort of the user when using the air conditioner, is beneficial to improving the user experience. After the self-cleaning ends, automatically exit the self-cleaning mode and enter the shutdown state, which does not affect the normal use of the user and has a good user experience.

[0164] It should be noted that in the embodiments of the present invention, four modes of manual shutdown self-cleaning mode, manual startup self-cleaning mode, automatic shutdown self-cleaning mode, and automatic startup self-cleaning mode can be realized. When the air conditioner is in operation, when the user manually presses a key to select the self-cleaning function and then presses the power key to shut down, it enters the manual shutdown self-cleaning mode; when the user manually presses a key to select the self-cleaning function and does not press the power key to shut down, it enters the manual startup self-cleaning mode; when the cumulative standby time of the air conditioner exceeds the sixth duration threshold, the air conditioner enters the automatic shutdown self-cleaning process mode; when the cumulative operation time of the air conditioner exceeds the fifth duration threshold, the air conditioner enters the automatic startup self-cleaning process mode;

[0165] It should also be noted that in the self-cleaning mode, the above-mentioned first self-cleaning mode and second self-cleaning mode can be executed to clean the indoor unit and the outdoor unit.

[0166] After each self-cleaning operation, record the start time of this time, and set the next automatic self-cleaning time according to this time. The time interval between the two times is not less than 50 days. The manual time is not restricted and can be turned on at any time. The determination of the outdoor ambient temperature is only made once when the self-cleaning is turned on and is not determined afterwards. When the outdoor temperature is lower than 5 degrees, only the indoor unit of the air conditioner is self-cleaned, and the outdoor unit is not self-cleaned. This is because the outdoor ambient temperature is too low, and it is easy to freeze when entering the high-frequency operation of outdoor self-cleaning and it cannot defrost, affecting the normal function operation of the air conditioner.

[0167] The air conditioner self-cleaning control device provided by the present invention will be described below. The air conditioner self-cleaning control device described below can be mutually corresponding and referred to the air conditioner self-cleaning control method described above.

[0168] Figure 3 is a schematic structural diagram of the air conditioner self-cleaning control device provided by the present invention, as Figure 3 shown, including:

[0169] An input module 310, configured to receive a first input from a user when it is determined that a target heating device in the air conditioner is in an operating state; the first input is used to turn on the first self-cleaning mode, and the target heating device is used to heat the flowing refrigerant.

[0170] A control module 320, configured to respond to the first input, control the opening and closing of ports of a first three-way valve and a second three-way valve in the air conditioner to form a first refrigerant circulation loop, and execute the first self-cleaning mode to clean the indoor unit of the air conditioner.

[0171] In the first refrigerant circulation loop, the path of the refrigerant circulating flow is the compressor, the condenser, the target heating device, the electronic expansion valve, the evaporator, the target heating device, and the compressor.

[0172] The air conditioner self-cleaning control device described in this embodiment can be used to execute the above-mentioned air conditioner self-cleaning control method embodiment, and its principle and technical effects are similar, and will not be elaborated here.

[0173] The device according to the embodiment of the present invention improves the internal pipeline structure of the air conditioner by adding a three-way valve and a heating device. When it is determined that the target heating device in the air conditioner is in an operating state, a first input from the user is received. The first input is used to turn on the first self-cleaning mode. In response to the first input, the opening and closing of the ports of the first three-way valve and the second three-way valve in the air conditioner are controlled to form a first refrigerant circulation loop, and the first self-cleaning mode is executed to clean the indoor unit of the air conditioner. Under the first refrigerant circulation loop, the path of the refrigerant circulating flow is compressor, condenser, target heating device, electronic expansion valve, evaporator, target heating device, compressor, so that the target heating device heats the flowing refrigerant before the refrigerant flows into the evaporator, and at the same time heats the low-temperature and low-pressure refrigerant flowing out of the evaporator, so that the gas-liquid two-phase refrigerant in the saturated state can increase the flow rate of the gaseous refrigerant after absorbing heat, increase the temperature of the refrigerant, and can effectively improve the frosting speed and efficiency of the evaporator after entering the evaporator. At the same time, it can effectively prevent the liquid slugging phenomenon of the refrigerant to the compressor, improve the efficiency of the compressor, and thus can greatly improve the self-cleaning efficiency of the air conditioner.

[0174] Figure 4 is a schematic structural diagram of a controller in an air conditioner provided by the present invention, as Figure 4 shown, the electronic device may include: a processor 410, a communication interface 420, a memory 430, and a communication bus 440. Among them, the processor 410, the communication interface 420, and the memory 430 complete mutual communication through the communication bus 440. The processor 410 can call the logical instructions in the memory 430 to execute the air conditioner self-cleaning control method provided by the above-mentioned various methods. The method includes: when it is determined that the target heating device in the air conditioner is in an operating state, receiving a first input from the user; the first input is used to turn on the first self-cleaning mode, and the target heating device is used to heat the flowing refrigerant; in response to the first input, controlling the opening and closing of the ports of the first three-way valve and the second three-way valve in the air conditioner to form a first refrigerant circulation loop, and executing the first self-cleaning mode to clean the indoor unit of the air conditioner; under the first refrigerant circulation loop, the path of the refrigerant circulating flow is compressor, condenser, the target heating device, electronic expansion valve, evaporator, the target heating device, the compressor.

[0175] In addition, when the logical instructions in the above-mentioned memory 430 are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical discs that can store program codes.

[0176] On the other hand, the present invention also provides a computer program product. The computer program product includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the air conditioner self-cleaning control method provided by the above-mentioned various methods. The method includes: when it is determined that the target heating device in the air conditioner is in an operating state, receiving a first input from the user; the first input is used to turn on the first self-cleaning mode, and the target heating device is used to heat the flowing refrigerant; in response to the first input, controlling the opening and closing of the ports of the first three-way valve and the second three-way valve in the air conditioner to form a first refrigerant circulation loop, and executing the first self-cleaning mode to clean the indoor unit of the air conditioner; in the first refrigerant circulation loop, the path of the refrigerant circulating flow is the compressor, the condenser, the target heating device, the electronic expansion valve, the evaporator, the target heating device, and the compressor.

[0177] In yet another aspect, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it is implemented to execute the air conditioner self-cleaning control method provided by the above-mentioned various methods. The method includes: when it is determined that the target heating device in the air conditioner is in an operating state, receiving a first input from the user; the first input is used to turn on the first self-cleaning mode, and the target heating device is used to heat the flowing refrigerant; in response to the first input, controlling the opening and closing of the ports of the first three-way valve and the second three-way valve in the air conditioner to form a first refrigerant circulation loop, and executing the first self-cleaning mode to clean the indoor unit of the air conditioner; in the first refrigerant circulation loop, the path of the refrigerant circulating flow is the compressor, the condenser, the target heating device, the electronic expansion valve, the evaporator, the target heating device, and the compressor.

[0178] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative work.

[0179] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the essence of the above technical solution, or the part that contributes to the prior art, can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0180] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A self-cleaning control method for an air conditioner, characterized in that, Including: When it is determined that the target heating device in the air conditioner is in an operating state, receiving a first input from the user; The first input is used to turn on the first self-cleaning mode, and the target heating device is used to heat the flowing refrigerant; In response to the first input, controlling the opening and closing of the ports of the first three-way valve and the second three-way valve in the air conditioner to form a first refrigerant circulation loop, and executing the first self-cleaning mode to clean the indoor unit of the air conditioner; Under the first refrigerant circulation loop, the path of the refrigerant circulating flow is the compressor, the condenser, the target heating device, the electronic expansion valve, the evaporator, the target heating device, the compressor; Executing the first self-cleaning mode includes: Entering the first frosting stage; In the first frosting stage, the air conditioner refrigerates under the first refrigerant circulation loop, the compressor operates at a first target frequency, the indoor unit fan is in a stopped state, and the outdoor unit fan is in an operating state. The target frequency is determined based on the outdoor ambient temperature; When the operation duration in the first frosting stage exceeds the first duration threshold, entering the first defrosting stage; In the first defrosting stage, the indoor unit fan operates at the maximum wind speed and has an operation duration of a second duration threshold; After the first defrosting stage ends, stopping the operation of the first self-cleaning mode; the first self-cleaning mode includes the first frosting stage and the first defrosting stage; When the outdoor ambient temperature is greater than or equal to 22°C, the first target frequency is 85Hz; when the outdoor ambient temperature is less than 22°C, the first target frequency is 80Hz; After stopping the operation of the first self-cleaning mode, it further includes: Turning on the second frosting stage of the second self-cleaning mode; When the operation duration in the second frosting stage exceeds the third duration threshold, entering the second defrosting stage of the second self-cleaning mode; After the second defrosting stage ends, stopping the operation of the second self-cleaning mode and recording the start time of the first self-cleaning mode; Wherein, in the second frosting stage, the air conditioner heats under the first refrigerant circulation loop, the compressor operates at a second target frequency, the indoor unit fan operates at the maximum wind speed, and the outdoor unit fan is in a stopped state; In the second defrosting stage, the outdoor unit fan operates at the maximum wind speed and has an operation duration of a fourth duration threshold; When the outdoor ambient temperature is greater than or equal to 16°C, the second target frequency is 80Hz; when the outdoor ambient temperature is greater than or equal to 5°C and less than 16°C, the second target frequency is 85Hz. When the outdoor ambient temperature is less than 5°C, the second target frequency is 0Hz, the compressor stops operating, and the indoor unit is self-cleaned.

2. The air conditioner self-cleaning control method according to claim 1, wherein Before receiving the first input from the user, it further includes: When turning on the air conditioner, turning on the operation of the target heating device; Receiving a second input from the user, the second input is used to turn on the cooling mode; In response to the second input, controlling the opening and closing of the ports of the first three-way valve and the second three-way valve to form a second refrigerant circulation loop and executing the cooling mode; Among them, under the second refrigerant circulation loop, the path of the refrigerant circulating flow is the compressor, the condenser, the electronic expansion valve, the evaporator, the target heating device, and the compressor.

3. The air conditioner self-cleaning control method according to claim 1, wherein Before receiving the first input from the user, it further includes: When the air conditioner is turned on, turn on the operation of the target heating device; Receive the third input from the user, where the third input is used to turn on the heating mode; In response to the third input, control the opening and closing of the ports of the first three-way valve and the second three-way valve to form a third refrigerant circulation loop and execute the heating mode; Among them, under the third refrigerant circulation loop, the path of the refrigerant circulating flow is the compressor, the evaporator, the electronic expansion valve, the target heating device, the condenser, and the compressor.

4. The air conditioner self-cleaning control method according to claim 1, wherein After recording the start time of the first self-cleaning mode, it further includes: When it is determined that the target duration exceeds the fifth duration threshold, and the target heating device is in the operating state and the air conditioner is in the target mode, control the air conditioner to switch from the target mode to the first self-cleaning mode for operation; the target duration starts from the start time; the target mode includes the cooling mode or the heating mode; After the first self-cleaning mode operation ends, control the air conditioner to operate the second self-cleaning mode; After the second self-cleaning mode operation ends, control the air conditioner to switch back to the target mode.

5. The air conditioner self-cleaning control method according to claim 1, characterized in that, It further includes: When it is determined that the air conditioner is in the shutdown state and the cumulative duration since the last shutdown exceeds the sixth duration threshold, turn on the air conditioner and turn on the operation of the target heating device; Control the air conditioner to operate the first self-cleaning mode and the second self-cleaning mode in sequence; After the second self-cleaning mode operation ends, control the air conditioner to enter the shutdown state.

6. The air conditioner self-cleaning control method according to any one of claims 1-5, characterized in that, The target heating device is a solar heating device, and the solar heating device is used to heat the flowing refrigerant.

7. An air conditioner self-cleaning control device, characterized in that, It includes: An input module, configured to receive the first input from the user when it is determined that the target heating device in the air conditioner is in the operating state; The first input is used to turn on the first self-cleaning mode, and the target heating device is used to heat the inflowing refrigerant; A control module, configured to, in response to the first input, control the opening and closing of the ports of the first three-way valve and the second three-way valve in the air conditioner to form a first refrigerant circulation loop and execute the first self-cleaning mode to clean the indoor unit of the air conditioner; Under the first refrigerant circulation loop, the path of the refrigerant circulating flow is the compressor, the condenser, the target heating device, the electronic expansion valve, the evaporator, the target heating device, and the compressor; Executing the first self-cleaning mode includes: Entering the first frosting stage; In the first frosting stage, the air conditioner performs refrigeration under the first refrigerant circulation loop, the compressor operates at a first target frequency, the indoor unit fan is in the stopped state, and the outdoor unit fan is in the operating state. The target frequency is determined based on the outdoor ambient temperature; When the running duration of the first frosting stage exceeds the first duration threshold, enter the first defrosting stage; In the first defrosting stage, the indoor unit fan operates at the maximum wind speed and has a running duration of the second duration threshold; After the end of the first defrosting stage, stop operating the first self-cleaning mode; the first self-cleaning mode includes the first frosting stage and the first defrosting stage; When the outdoor ambient temperature is greater than or equal to 22°C, the first target frequency is 85 Hz; when the outdoor ambient temperature is less than 22°C, the first target frequency is 80 Hz; After stopping the operation of the first self-cleaning mode, it further includes: Start the second frosting stage of the second self-cleaning mode; When the running duration of the second frosting stage exceeds the third duration threshold, enter the second defrosting stage of the second self-cleaning mode; After the end of the second defrosting stage, stop operating the second self-cleaning mode and record the start time of the first self-cleaning mode; Wherein, in the second frosting stage, the air conditioner performs heating under the first refrigerant circulation loop, the compressor operates at the second target frequency, the indoor unit fan operates at the maximum wind speed, and the outdoor unit fan is in a stopped state; In the second defrosting stage, the outdoor unit fan operates at the maximum wind speed and has a running duration of the fourth duration threshold; When the outdoor ambient temperature is greater than or equal to 16°C, the second target frequency is 80 Hz; when the outdoor ambient temperature is greater than or equal to 5°C and less than 16°C, the second target frequency is 85 Hz, when the outdoor ambient temperature is less than 5°C, the second target frequency is 0 Hz, and the compressor stops operating for indoor unit self-cleaning.

8. An air conditioner, characterized in that, It includes a compressor, a four-way valve, a condenser, a first three-way valve, a second three-way valve, a target heating device, an electronic expansion valve, and an evaporator; The first port of the first three-way valve is connected to the four-way valve through the condenser, the four-way valve is connected to the compressor, and the third port of the first three-way valve is respectively connected to one end of the electronic expansion valve and the third port of the target heating device; the other end of the electronic expansion valve is connected to one end of the evaporator; The first port of the second three-way valve is connected to the compressor through the four-way valve, and the second port of the second three-way valve is connected to the second port of the target heating device; The second port of the first three-way valve is connected to the first port of the target heating device; the third port of the second three-way valve is respectively connected to the other end of the evaporator and the fourth port of the target heating device; It further includes a controller, the controller includes a memory, a processor, and a computer program stored on the memory and executable on the processor, and when the processor executes the program, it implements the air conditioner self-cleaning control method according to any one of claims 1 to 6.

9. A non-transitory computer-readable storage medium, having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the air conditioner self-cleaning control method according to any one of claims 1 to 6.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the air conditioner self-cleaning control method according to any one of claims 1 to 6.

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