Air conditioner, control method and device of air conditioner and storage medium

Abstract

The invention discloses an air conditioner and a control method and device thereof and a storage medium. The air conditioner comprises a first water storage tank arranged in an outdoor unit, a heating assembly arranged in the first water storage tank, a second water storage tank arranged in an indoor unit and a drainage assembly communicating with the first water storage tank and the second water storage tank. The method comprises the steps that when the air conditioner operates in a heating mode, the state of condensate water in a first water storage tank is obtained, under the condition that the state of the condensate water is a preset state, the air conditioner is controlled to execute an ice melting strategy, the ice melting strategy is that the state of a heating assembly is controlled, and when the executed ice melting strategy meets a first preset condition, the state of the heating assembly is controlled; and if the state of the condensate water is still the preset state, the drainage assembly is controlled to drain the condensate water in the second water storage tank into the first water storage tank. Therefore, under the condition of low-temperature operation, the residual ice in the first water storage tank can be reduced, the operation reliability of the air conditioner is achieved, and the user experience is improved.

Description

Technical Field

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

[0002] Traditional window air conditioner condensate reuse methods include pumping water and spraying heat exchangers. By collecting and consuming condensate, the purpose of eliminating the need for drainage is achieved. For cooling-only air conditioners, only the condensate on the evaporator side needs to be collected for reuse; for heating-cooling air conditioners, the condensate in cooling mode is on the indoor side, and the condensate in heating mode is on the outdoor side. The condensate consumption needs to be concentrated on the indoor side or the outdoor side, and then reused. By reusing condensate, the efficiency of the heat exchanger can be improved and the problem of condensate discharge can be solved.

[0003] When the air conditioner is running in heating mode in a cold environment, when the condensed water is consumed by the outdoor fan blades, it is easy to cause problems such as insufficient consumption, splashing water, and easy freezing or damage of the fan blades. In the related art, heating spray is used to consume condensed water, but the humidity of the indoor environment will increase. At the same time, the amount of water consumed by spray humidification is small, the consumption time is long, and the water tank is prone to overflow. In the related art, water consumption can be achieved by high-pressure atomization without connecting a drain pipe, but when high-pressure atomization is used, a temporary water storage tank is required. In a low temperature environment, when the heat supply in the water tank is insufficient, the condensed water inside the water tank will gradually freeze, and some ice cubes are difficult to melt. These ice cubes will occupy the volume of the water tank, increasing the risk of defrost water overflow. 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, when the air conditioner is operating in a heating mode, the execution of an ice-melting strategy is determined according to the state of condensed water in a first water storage tank, and when the execution of the ice-melting strategy meets certain conditions, if the state of the condensed water is still a preset state, the drainage component is controlled to discharge the condensed water in the second water storage tank into the first water storage tank, which can reduce the residual ice in the first water storage tank under low-temperature operation, achieve the reliability of the operation of the first water storage tank, and improve the user experience.

[0005] A second object of the present invention is to provide a control device for an air conditioner.

[0006] A third object of the present invention is to provide a computer-readable storage medium.

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

[0008] To achieve the above-mentioned purpose, an embodiment of the first aspect of the present invention proposes a control method for an air conditioner, wherein the air conditioner comprises: a first water tank arranged in an outdoor unit, a heating component arranged in the first water tank, a second water tank arranged in an indoor unit, and a drainage component connecting the first water tank and the second water tank, wherein the heating component is configured to heat the condensed water in the first water tank, and the method comprises: when the air conditioner is operating in a heating mode, obtaining the state of the condensed water in the first water tank; when the state of the condensed water is a preset state, controlling the air conditioner to execute a defrosting strategy, wherein the defrosting strategy is to control the state of the heating component; when the execution of the defrosting strategy satisfies a first preset condition, if the state of the condensed water is still the preset state, controlling the drainage component to discharge the condensed water in the second water tank into the first water tank.

[0009] According to the control method of the air conditioner of the embodiment of the present invention, when the air conditioner is running in the heating mode, the state of the condensed water in the first water tank is obtained, and when the state of the condensed water is a preset state, the air conditioner is controlled to execute the ice-melting strategy, wherein the ice-melting strategy is to control the state of the heating component, and when the execution of the ice-melting strategy meets the first preset condition, if the state of the condensed water is still the preset state, the drainage component is controlled to discharge the condensed water in the second water tank into the first water tank. Therefore, when the air conditioner is running in the heating mode, the method determines to execute the ice-melting strategy according to the state of the condensed water in the first water tank, and when the execution of the ice-melting strategy meets certain conditions, if the state of the condensed water is still the preset state, the drainage component is controlled to discharge the condensed water in the second water tank into the first water tank, which can reduce the residual ice in the first water tank under low-temperature operation, achieve the reliability of the operation of the first water tank, and improve the user experience.

[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 some embodiments of the present invention, the control method of the above-mentioned air conditioner also includes: when the step of controlling the drainage component to discharge the condensed water in the second water tank into the first water tank reaches a first preset time, or when it is detected that the water level of the first water tank reaches a first preset water level, controlling the drainage component to stop draining water to the first water tank.

[0012] According to some embodiments of the present invention, the control method of the air conditioner further includes: when the execution of the defrosting strategy satisfies a second preset condition, controlling the drainage component to drain the water in the first water storage tank.

[0013] According to some embodiments of the present invention, the heating component includes a refrigerant pipeline, which extends from one end of the indoor heat exchanger to the first water storage tank. The control of the air conditioner to execute the defrosting strategy includes: increasing the operating frequency of the compressor, reducing the speed of the indoor fan, reducing the speed of the outdoor fan, increasing the opening of the throttling component, and switching at least one of the operating modes of the air conditioner.

[0014] According to some embodiments of the present invention, the heating component includes a heater, and controlling the air conditioner to execute the defrosting strategy includes: turning on the heater, or turning on the heater and controlling the heating power of the heater.

[0015] According to some embodiments of the present invention, the drainage component includes a first water pump arranged in an outdoor unit, and the step of controlling the drainage component to discharge condensed water in the second water tank into the first water tank for a first preset time includes: controlling the first water pump to reverse for a first preset time to pump the condensed water in the second water tank into the first water tank; wherein the first preset time is less than the time to drain the condensed water in the second water tank.

[0016] According to some embodiments of the present invention, the second preset condition is: the total time for executing the defrost strategy reaches the second preset time, or the state of the condensed water is the preset state. When the execution of the defrost strategy does not meet the first preset condition, the method also includes: when the water level of the first water tank reaches the first preset water level, controlling the first water pump to rotate forward for a third preset time; when the water level of the first water tank does not reach the first preset water level, obtaining the state of the condensed water in the first water tank.

[0017] According to some embodiments of the present invention, controlling the drainage component to drain water from the first water storage tank includes: controlling the first water pump to rotate forward for a third preset time.

[0018] According to some embodiments of the present invention, the drainage component includes a spray pump arranged in an indoor unit, and the spray pump is configured to spray and discharge condensed water in a second water tank of the indoor unit, wherein, in the process of controlling the first water pump to rotate forward for a third preset time, the method also includes: when the water level of the second water tank reaches the second preset water level, controlling the first water pump to stop rotating forward, and controlling the spray pump to rotate forward for a fourth preset time; after the spray pump rotates forward for the fourth preset time, controlling the first water pump to rotate forward until the third preset time is reached; wherein the third preset time is the time it takes to drain the condensed water in the first water tank, and the fourth preset time is less than the time it takes for the spray pump to drain the condensed water in the second water tank.

[0019] According to some embodiments of the present invention, the control method of the air conditioner further includes: when a shutdown command is received, controlling the spray pump to operate for a fifth preset time.

[0020] To achieve the above-mentioned purpose, a second aspect of the present invention proposes a control device for an air conditioner, wherein the air conditioner comprises: a first water tank arranged in an outdoor unit, a heating component arranged in the first water tank, a second water tank arranged in an indoor unit, and a drainage component connecting the first water tank and the second water tank, wherein the heating component is configured to heat the condensed water in the first water tank, and the device comprises: an acquisition module, for acquiring the state of the condensed water in the first water tank when the air conditioner is operating in a heating mode; a control module, for controlling the air conditioner to execute a defrosting strategy when the state of the condensed water is a preset state, wherein the defrosting strategy is to control the state of the heating component; the control module is also used to control the drainage component to discharge the condensed water in the second water tank into the first water tank when a first preset condition is met during the execution of the defrosting strategy, if the state of the condensed water is still the preset state.

[0021] According to the control device of the air conditioner of the embodiment of the present invention, when the air conditioner is running in the heating mode, the state of the condensed water in the first water tank is obtained through the acquisition module. When the state of the condensed water is in the preset state, the control module controls the air conditioner to execute the ice-melting strategy, wherein the ice-melting strategy is to control the state of the heating component. When the execution of the ice-melting strategy meets the first preset condition, if the state of the condensed water is still in the preset state, the control module controls the drainage component to discharge the condensed water in the second water tank into the first water tank. Therefore, when the air conditioner is running in the heating mode, the device determines to execute the ice-melting strategy according to the state of the condensed water in the first water tank. When the execution of the ice-melting strategy meets certain conditions, if the state of the condensed water is still in the preset state, the drainage component is controlled to discharge the condensed water in the second water tank into the first water tank. In the case of low-temperature operation, the residual ice in the first water tank can be reduced, the reliability of the operation of the first water tank can be achieved, and the user experience can be improved.

[0022] To achieve the above-mentioned purpose, a third aspect 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.

[0023] The computer-readable storage medium of the embodiment of the present invention can reduce the residual ice in the first water tank when operating at a low temperature by executing the above-mentioned air conditioner control method, thereby achieving the reliability of the operation of the first water tank and improving the user experience.

[0024] To achieve the above-mentioned purpose, the fourth 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, wherein when the processor executes the air conditioner control program, the above-mentioned air conditioner control method is implemented.

[0025] According to the air conditioner of the embodiment of the present invention, by executing the above-mentioned air conditioner control method, it is possible to reduce the residual ice in the first water tank when operating at a low temperature, achieve the reliability of the operation of the first water tank, and improve the user experience.

[0026] 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

[0027] Figure 1 is a flow chart of a method for controlling an air conditioner according to some embodiments of the present invention;

[0028] Figure 2 is a schematic diagram of an air conditioner according to some embodiments of the present invention;

[0029] Figure 3 A top view of a first water storage tank in an air conditioner according to some embodiments of the present invention;

[0030] Figure 4 A partial schematic diagram of residual ice in a first water storage tank of an air conditioner according to some embodiments of the present invention;

[0031] Figure 5 A partial schematic diagram of residual ice in a first water storage tank of an air conditioner according to some embodiments of the present invention;

[0032] Figure 6 is a flow chart of a method for controlling an air conditioner according to some embodiments of the present invention;

[0033] Figure 7 is a block diagram of a control device for an air conditioner according to some embodiments of the present invention;

[0034] Figure 8 is a block diagram of an air conditioner according to some embodiments of the present invention. DETAILED DESCRIPTION

[0035] 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.

[0036] The following describes a method for controlling an air conditioner, a control device 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.

[0037] Figure 1 is a flow chart of a method for controlling an air conditioner according to some embodiments of the present invention.

[0038] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the air conditioner 100 may include: a first water storage tank 122 provided in the outdoor unit 120, a heating component (not specifically shown in the figure) provided in the first water storage tank 122, a second water storage tank provided in the indoor unit, and a drainage component connecting the first water storage tank and the second water storage tank, and the heating component is configured to heat the condensed water in the first water storage tank 122. In some embodiments of the present invention, the heating component may be a refrigerant pipeline or a heater.

[0039] Continue to refer Figure 2 and Figure 3 The air conditioner 100 of the embodiment of the present invention further includes: a second water storage tank 112 disposed in the indoor unit 110 , and the drainage component may include a first water pump 124 disposed in the outdoor unit 120 .

[0040] The drainage assembly of the embodiment of the present invention may further include a spray pump 111 disposed in the indoor unit 110 , and the spray pump 111 is configured to spray and discharge the condensed water in the second water storage tank 112 of the indoor unit 110 .

[0041] The air conditioner 100 of the embodiment of the present invention may further include: a first water level detection switch 113 disposed in the second water tank 112, a second water level detection switch 125 disposed in the first water tank 122, and an ice detector 121 disposed in the first water tank 122. The first water level detection switch 113 is used to detect the water level information of the second water tank, the second water level detection switch 125 is used to detect the water level information of the first water tank, the setting position of the ice detector 121 may be determined according to the shape of the first water tank 122, the number of ice detectors 121 is not limited to one, and multiple ice detectors 121 may be provided, and the specific number of ice detectors may be determined according to the capacity of the first water tank. It should be noted that the installation position of the ice detector 121 is far away from the heating component in the first water tank 122, and is provided in a position that is difficult to heat, so as to better detect ice formation, for example, it may be provided at the corner of the water tank.

[0042] When the air conditioner is running in heating mode, the condensed water in the first water tank 122 gradually increases. When the condensed water in the first water tank 122 increases to a certain amount and triggers the second water level detection switch 125, it means that there is a risk of overflow of the condensed water in the first water tank. At this time, the first water pump 124 can be controlled to start, and the condensed water in the first water tank 122 can be pumped into the second water tank 112, and the spray pump 111 can be controlled to start, so as to spray the condensed water in the second water tank 112 into atomized water by high pressure and discharged through the spray head.

[0043] In some embodiments of the present invention, when the heating component is a refrigerant pipeline, a portion of the pipeline of the indoor heat exchanger 114 extends to the outdoors and spirals in the first water storage tank 122, that is, Figure 2 and Figure 3 The refrigerant pipe 123 in the heating mode is a high-temperature device for the indoor heat exchanger. Therefore, the refrigerant pipe extending to the outside and circling in the first water storage tank 122 can be used to heat and keep warm the space of the first water storage tank 122. However, in the case of ultra-low temperature, defrosting period, shutdown period, etc., when there is residual water in the first water storage tank 122 and it is running for a long time, when the heating capacity of the refrigerant pipe 123 is insufficient, there is still ice in the first water storage tank 122, resulting in the inability to consume condensed water normally.

[0044] To this end, an embodiment of the present invention proposes a control method for an air conditioner. When the air conditioner is in a heating operation mode, when ice is detected in a first water tank, the air conditioner is controlled to execute a defrosting strategy, wherein the defrosting strategy controls the state of a heating component. When the defrosting strategy meets certain conditions, if the state of condensed water is still a preset state, the drainage component is controlled to discharge the condensed water in the second water tank into the first water tank. When the air conditioner is operated at a low temperature, the residual ice in the first water tank is reduced, the reliability of the operation of the first water tank is achieved, and the user experience is improved.

[0045] It should be noted that the following embodiments of the present invention are not limited to Figure 2 The schematic diagram of the air conditioner in the figure is not limited to window-type air conditioners, but is applicable to various outdoor units with residual ice in the water tank.

[0046] like Figure 1 As shown, the control method of the air conditioner according to the embodiment of the present invention may include the following steps:

[0047] S1, when the air conditioner is operated in a heating mode, obtaining a state of condensed water in a first water storage tank.

[0048] S2, when the state of condensed water is a preset state, controlling the air conditioner to execute a defrosting strategy, wherein the defrosting strategy is to control the state of a heating component.

[0049] S3, when the execution of the ice-melting strategy meets the first preset condition, if the state of the condensed water is still the preset state, the drainage component is controlled to discharge the condensed water in the second water storage tank into the first water storage tank.

[0050] Specifically, during the operation of the air conditioner, the operation mode of the air conditioner is first obtained, and the operation mode of the air conditioner may include a heating mode and a cooling mode. When the air conditioner is operated in the heating mode, the ice detector set in the first water tank starts to work, and detects the state of the condensed water in the first water tank, that is, detects whether the state of the condensed water in the first water tank is an ice state (preset state). The state of the condensed water may be a liquid state or a solid state (ice). When the ice detector detects that the state of the condensed water is an ice state, the air conditioner is controlled to execute an ice-melting strategy, and the ice-melting strategy is to control the state of the heating component. When the execution of the ice-melting strategy meets the first preset condition (the first preset condition may include: the time reaches a certain time A1, the water temperature in the first water tank reaches a preset temperature, etc.), if the state of the condensed water is still the preset state, the drainage component is controlled to discharge the condensed water in the second water tank into the first water tank. The drainage component may be one water pump or two water pumps. When the heating component is a heater, controlling the state of the heating component includes increasing the heating power of the heater; when the heating component is a refrigerant pipeline, controlling the state of the heating component includes increasing the temperature of the refrigerant pipeline. Thereby, when operating at low temperature, the residual ice in the first water storage tank can be reduced, the reliability of the operation of the first water storage tank can be achieved, and the user experience can be improved.

[0051] The control method of the air conditioner according to the embodiment of the present invention is described in detail below.

[0052] In some embodiments of the present invention, the control method of the air conditioner further includes: when the step of controlling the drainage component to drain the condensed water in the second water tank into the first water tank reaches a first preset time, or when it is detected that the water level of the first water tank reaches a first preset water level, controlling the drainage component to stop draining water into the first water tank. The first preset time and the first preset water level can be calibrated according to actual conditions.

[0053] Specifically, when the execution of the defrosting strategy meets the first preset condition, if the state of the condensed water is still the preset state, the drainage component is controlled to discharge the condensed water in the second water tank into the first water tank. When the step of controlling the drainage component to discharge the condensed water in the second water tank into the first water tank reaches B minutes (the first preset time), the drainage component is controlled to stop draining water to the first water tank, or when it is detected that the water level of the first water tank reaches the first preset water level (such as the high water level switch of the first water tank is triggered), the drainage component is controlled to stop draining water to the first water tank. At this time, the heating component maintains the heating and defrosting state, which can ensure that there is still condensed water in the first water tank.

[0054] In some embodiments of the present invention, the control method of the air conditioner further includes: when the defrosting strategy is executed and a second preset condition is satisfied, controlling the drainage component to drain the water in the first water storage tank.

[0055] Specifically, when the execution of the defrosting strategy reaches a second preset condition (the second preset condition may be that the total time for executing the defrosting strategy reaches a certain time C, or the state of the condensed water is detected to be a liquid state), the drainage component is controlled to drain the water in the first water tank to reduce the residual water in the first water tank.

[0056] In some embodiments of the present invention, the heating component includes a refrigerant pipeline, which extends from one end of the indoor heat exchanger to the first water storage tank, and controls the air conditioner to execute a defrosting strategy, including: increasing the operating frequency of the compressor, reducing the speed of the indoor fan, reducing the speed of the outdoor fan, increasing the opening of the throttling component, and switching the operating mode of the air conditioner. At least one control method.

[0057] Specifically, when the heating component is a refrigerant pipeline, a portion of the refrigerant pipeline of the indoor heat exchanger extends to the outdoor water tank. In the heating mode, the indoor heat exchanger is a high-temperature device. The extended refrigerant pipeline can be used to heat and insulate the water tank space. At the same time, the first water pump and the spray pump are attached to the extended refrigerant pipeline, and the high temperature of the refrigerant pipeline can be used to reduce the residual ice in the first water tank.

[0058] In a low temperature environment, when residual water in the first water storage tank cannot be drained away in time and remains, the heating component needs to provide sufficient heat to maintain the liquid state of the residual water. When the refrigerant pipeline is heated, the temperature of the refrigerant pipeline can be increased by controlling at least one of the operating frequency of the compressor, the speed of the internal and external fans, the opening of the throttling component, and switching the operating mode of the air conditioner. For example, the operating frequency of the compressor is increased, the speed of the indoor fan is reduced, the speed of the outdoor fan is reduced, the opening of the throttling component is increased, and the operating mode of the air conditioner is switched to provide the temperature of the refrigerant so that the state of the refrigerant pipeline is a temperature-increasing state. It is also possible to select all control methods for joint control, and the effect of the refrigerant pipeline being a temperature-increasing state is better.

[0059] In other embodiments of the present invention, the heating component may include a heater, and controlling the air conditioner to execute the defrosting strategy includes: turning on the heater, or turning on the heater and controlling the heating power of the heater.

[0060] That is to say, in a low temperature environment, when residual water in the first water storage tank cannot be drained away in time and remains, the heating component needs to provide sufficient heat to maintain the residual water in a liquid state. The temperature of the condensed water in the first water storage tank can be increased by turning on the heater, or by turning on the heater and controlling the heating power of the heater, for example, by increasing the heating power of the heater, to reduce the risk of freezing.

[0061] When increasing the temperature of the refrigerant pipeline by increasing the operating frequency of the compressor, reducing the speed of the indoor and outdoor fans, increasing the opening of the throttling element, and switching the operating mode of the air conditioner to increase the temperature of the refrigerant water in the first water tank, it is necessary to consider the impact of these methods on the performance of the air-conditioning system. The temperature increase state of the refrigerant pipeline cannot be maintained for a long time, so the air conditioner is mainly in a low-temperature insulation state during operation. When the condensed water in the first water tank is heated by increasing the heating power of the heater, continuously maintaining a high-temperature heating state means higher power consumption. Therefore, when the outdoor ambient temperature is low and the residual water in the first water tank cannot be drained away in time and remains, the first water tank heating refrigerant pipe is partially frozen during system operation because the temperature is relatively low. The part of the heating refrigerant pipe that is close to the first water tank is liquid, and the part of the heating refrigerant pipe that is far away from the first water tank is ice. The liquid water that is close to the first water tank heating refrigerant pipe is gradually heated and evaporated during operation and dries up, resulting in the following phenomenon. Figure 4 The residual ice phenomenon shown is that, because of evaporation and drying up, the area near the first water tank heating refrigerant tube is air, and the part far away from the first water tank heating refrigerant tube is still not iced. At this time, the heat transfer medium between the first water tank heating refrigerant tube and the ice is air. Even if the temperature of the first water tank heating refrigerant tube is increased, the residual ice cannot be melted. The residual ice will occupy the space of the water tank and reduce the actual volume of the water tank. Although before the above-mentioned evaporation and drying up phenomenon occurs, increasing the temperature of the first water tank heating refrigerant tube and entering a high-temperature heating state can melt the ice far away from the first water tank heating refrigerant tube, but since the volume of ice cubes decreases during the melting process, it is easy to appear Figure 5 When the ice residue is thick, it may cause defrosting water to overflow. In addition, ice residue is easily left in the pipe fixture, water level switch, water pump and other parts in the first water storage tank, resulting in failure to drain water normally.

[0062] In some embodiments of the present invention, the drainage component includes a first water pump arranged in an outdoor unit, and the step of controlling the drainage component to discharge condensed water in the second water tank into the first water tank for a first preset time includes: controlling the first water pump to reverse for the first preset time to pump the condensed water in the second water tank into the first water tank; wherein the first preset time is less than the time to drain the condensed water in the second water tank.

[0063] Specifically, when the air conditioner is running in heating mode, the ice detector starts to run to detect the ice condition in the first water tank. When the detection value of the ice detector reaches the set value, it means that the condensed water in the first water tank is frozen, and the ice-melting strategy is executed at this time. If the detection value of the ice detector does not reach the set value, it means that the condensed water in the first water tank has melted, and there is no need to execute the ice-melting strategy. When the execution of the ice-melting strategy meets the first preset condition, for example, the execution time of the ice-melting strategy reaches a certain time A1, if the state of the condensed water detected by the ice detector is still the preset state, it means that the ice-melting strategy has been executed. Figure 4 and Figure 5 In similar cases of residual ice, there is air between the residual ice and the refrigerant pipeline, so increasing the temperature of the refrigerant pipeline can no longer melt the residual ice. At this time, the first water pump is controlled to reverse for a first preset time (such as B minutes) to pump the condensed water in the second water tank into the first water tank. The condensed water in this process is used to fill the gap between the residual ice and the refrigerant pipeline, making the condensed water the heat transfer medium between the residual ice and the refrigerant pipeline. The amount of condensed water in the second water tank pumped into the first water tank is different each time. The condensed water in the second water tank can only be pumped into the first water tank in small amounts to avoid overflow. In order to ensure that there is still condensed water in the second water tank, the first preset time (such as B minutes) should be less than the time it takes to empty the condensed water in the second water tank after the first water pump is reversed. After controlling the first water pump to reverse for B minutes, the defrost strategy is executed again until the execution time of the defrost strategy reaches a certain time (such as A minute). Since the first water tank is filled with liquid water, the residual ice is more easily melted into water. At the same time, the first water pump can be avoided from being started and closed, thereby increasing the service life of the first water pump.

[0064] In some embodiments of the present invention, the second preset condition is: the total time of executing the ice-melting strategy does not reach the second preset time, or the state of the condensed water is the preset state. When the execution of the ice-melting strategy does not meet the first preset condition, the above method further includes: when the water level of the first water storage tank reaches the first preset water level, controlling the first water pump to rotate forward for a third preset time; when the water level of the first water tank does not reach the first preset water level, obtaining the state of the condensed water in the first water storage tank. Among them, the second preset time, the first preset water level and the third preset time can be calibrated according to actual conditions.

[0065] Furthermore, in some embodiments of the present invention, controlling the drainage component to drain the water in the first water storage tank includes: controlling the first water pump to rotate forward for a third preset time.

[0066] Specifically, when the ice detector detects that the state of condensed water is in a preset state, the total time for executing the ice-melting strategy is recorded. When the total time for executing the ice-melting strategy does not reach the second preset time (such as C minutes), or the state of the condensed water is in the preset state, when it is detected that the water level of the first water tank reaches the first preset water level (the water level detection switch in the first water tank is triggered), the pumping process is entered, and the first water pump is controlled to rotate forward for a third preset time (such as D minutes) to pump the condensed water in the first water tank into the second water tank to discharge the ice-melting water in the first water tank to prevent the first water tank from overflowing. When it is detected that the water level of the first water tank does not reach the first preset water level, the state of the condensed water in the first water tank is detected by the ice detector. If the condensed water in the first water tank is in an iced state, the ice-melting strategy continues to be executed. When the total time for executing the defrosting strategy reaches the second preset time (such as C minutes), it means that the condensed water in the first water tank is insufficient and cannot completely fill the first water tank, and it is necessary to enter the pumping process. The first water pump is controlled to rotate forward for the third preset time (such as D minutes) to pump the condensed water in the first water tank into the second water tank, that is, to control the drainage component to drain the water in the first water tank.

[0067] In some embodiments of the present invention, the drainage assembly includes a spray pump disposed in the indoor unit, and the spray pump is configured to spray and discharge the condensed water in the second water storage tank of the indoor unit, wherein, in the process of controlling the first water pump to rotate forward for the third preset time, the above method further includes: when the water level of the second water storage tank reaches the second preset water level, controlling the first water pump to stop rotating forward, and controlling the spray pump to rotate forward for the fourth preset time; after the spray pump rotates forward for the fourth preset time, controlling the first water pump to rotate forward until the third preset time is reached; wherein the third preset time is the time to empty the condensed water in the first water storage tank, and the fourth preset time is less than the time to empty the condensed water in the second water storage tank by the spray pump. The second preset water level and the fourth preset time can be calibrated according to actual conditions.

[0068] Specifically, in the process of controlling the first water pump to rotate forward for the third preset time, that is, entering the process of pumping, when it is detected that the water level of the second water tank reaches the second preset water level (the water level detection switch in the second water tank is triggered), it means that the water level in the second water tank is high and there is a risk of overflow. At this time, the first water pump is first controlled to stop rotating forward, and the current time that the first water pump has rotated is recorded, and the spray pump is controlled to rotate forward. After the spray pump rotates forward for the fourth preset time (such as E minutes), the spray pump is controlled to stop working, and the first water pump is controlled to continue to rotate forward for the remaining time until the accumulated working time of the first water pump reaches the third preset time (such as D minutes). Among them, D minutes is the time required for the first water pump to rotate forward to drain the condensed water in the first water tank when the first water tank is full of water. In order to ensure that there is enough condensed water in the second water tank for the first water pump to reverse and pump the condensed water in the second water tank into, the working time of the spray pump (E minutes) should be less than the time required for the spray pump to drain the water after the second water tank reaches the drainage water volume.

[0069] In some embodiments of the present invention, the control method of the air conditioner further comprises: upon receiving the shutdown command, controlling the spray pump to operate for a fifth preset time. The fifth preset time can be calibrated according to actual conditions, for example, the fifth preset time is the time required for the spray pump to drain the water after the second water tank reaches the drainage volume.

[0070] That is, when the air conditioner receives a shutdown command from the user, the spray pump is controlled to rotate forward for a fifth preset time (such as F minutes) to drain the condensed water in the second water storage tank to prevent the condensed water accumulated in the second water storage tank from having odor. In addition, due to the low outdoor ambient temperature, residual water in the spray pipeline and the nozzle will also freeze. Therefore, it is necessary to control the spray pump to rotate forward for a period of time to drain the condensed water in the spray pipeline and reduce the residual water in the pipe.

[0071] As a specific example, Figure 6 As shown, the control method of the air conditioner of the present invention may include the following steps:

[0072] S101, the air conditioner operates in a heating mode.

[0073] S102, the ice detector detects that the condensed water state reaches a preset state.

[0074] S103, the air conditioner executes defrosting strategy A for 1 minute and starts timing.

[0075] S104, determining whether the condensed water state detected by the ice detector reaches a preset state. If yes, executing step S105; if no, executing step S109.

[0076] S105, controlling the first water pump to reverse for B minutes.

[0077] S106, the air conditioner executes the defrosting strategy for A minutes.

[0078] S107, determining whether the total duration of the air conditioner executing the optimization strategy is greater than C minutes. If yes, executing step S109; if not, executing step S108.

[0079] S108, determining whether the water level of the first water storage tank has reached the first preset water level. If yes, executing step S109; if no, returning to step S104.

[0080] S109, control the first water pump to rotate forward for D minutes.

[0081] S110, during the forward rotation of the first water pump, determine whether the water level of the second water storage tank reaches the second preset water level. If yes, execute step S111; if no, execute step S112.

[0082] S111, control the spray pump to run for E minutes.

[0083] S112, determine whether the first water pump rotates forward for D minutes. If yes, execute step S113; if no, return to step S109.

[0084] S113, determining whether the air conditioner has received a shutdown instruction. If yes, executing step S114; if no, returning to step S102.

[0085] S114, control the spray pump to run for F minutes and then end.

[0086] It should be noted that the specific numerical values ​​mentioned above are only used as examples to illustrate the implementation of the present invention in detail, and should not be understood as limiting the present invention. In other examples or implementations or embodiments, other numerical values ​​can be selected according to the present invention, and are not specifically limited here.

[0087] In summary, according to the control method of the air conditioner according to the embodiment of the present invention, when the air conditioner is operating in the heating mode, the state of the condensed water in the first water tank is obtained, and when the state of the condensed water is a preset state, the air conditioner is controlled to execute a defrosting strategy, wherein the defrosting strategy is to control the state of the heating component, and when the execution of the defrosting strategy meets the first preset condition, if the state of the condensed water is still the preset state, the drainage component is controlled to discharge the condensed water in the second water tank into the first water tank.

[0088] Therefore, when the air conditioner is operating in heating mode, the method determines the execution of the defrosting strategy according to the state of the condensed water in the first water tank. When the execution of the defrosting strategy meets certain conditions, if the state of the condensed water is still in a preset state, the drainage component is controlled to discharge the condensed water in the second water tank into the first water tank. Under low-temperature operation, the residual ice in the first water tank can be reduced, the reliability of the operation of the first water tank can be achieved, and the user experience can be improved.

[0089] Corresponding to the above embodiment, the present invention further proposes a control device for an air conditioner.

[0090] like Figure 7 As shown, the control device 200 of the air conditioner according to the embodiment of the present invention may include: an acquisition module 210 and a control module 220 .

[0091] The acquisition module 210 is used to acquire the state of condensed water in the first water storage tank when the air conditioner is running in the heating mode. The control module 220 is used to control the air conditioner to execute the ice-melting strategy when the state of the condensed water is a preset state, wherein the ice-melting strategy is to control the state of the heating component. When the execution of the ice-melting strategy meets the first preset condition, if the state of the condensed water is still the preset state, the control module 220 controls the drainage component to discharge the condensed water in the second water storage tank into the first water storage tank.

[0092] In some embodiments of the present invention, the control module 220 is also used to: when the step of controlling the drainage component to discharge condensed water in the second water tank into the first water tank reaches a first preset time, or when it is detected that the water level of the first water tank reaches a first preset water level, control the drainage component to stop draining water to the first water tank.

[0093] In some embodiments of the present invention, the control module 220 is further configured to: when the defrosting strategy is executed and a second preset condition is satisfied, control the drainage component to drain the water in the first water storage tank.

[0094] In some embodiments of the present invention, the heating component includes a refrigerant pipeline, which extends from one end of the indoor heat exchanger to the first water storage tank. The control module 220 controls the air conditioner to execute the defrosting strategy, which is specifically used to: adopt at least one control method of increasing the operating frequency of the compressor, reducing the indoor fan speed, reducing the outdoor fan speed, increasing the opening of the throttling component, and switching the operating mode of the air conditioner.

[0095] In some embodiments of the present invention, the heating component includes a heater, and the control module 220 controls the air conditioner to execute the defrosting strategy, specifically for: turning on the heater, or turning on the heater and controlling the heating power of the heater.

[0096] In some embodiments of the present invention, the drainage component includes a first water pump arranged in the outdoor unit, which controls the drainage component to discharge the condensed water in the second water tank into the first water tank until a first preset time is reached. The control module 220 is also used to control the first water pump to reverse for a first preset time to pump the condensed water in the second water tank into the first water tank; wherein the first preset time is less than the time to drain the condensed water in the second water tank.

[0097] In some embodiments of the present invention, the second preset condition is: when the total time for executing the defrost strategy reaches the second preset time, or the state of the condensed water is a preset state, when the execution of the defrost strategy does not meet the first preset condition, the control module 220 is also used to: when the water level in the first water tank reaches the first preset water level, control the first water pump to rotate forward for a third preset time; when the water level in the first water tank does not reach the first preset water level, obtain the state of the condensed water in the first water tank.

[0098] In some embodiments of the present invention, the control module 220 controls the drainage component to drain the water in the first water storage tank, specifically for: controlling the first water pump to rotate forward for a third preset time.

[0099] In some embodiments of the present invention, the drainage component includes a spray pump arranged in the indoor unit, and the spray pump is configured to spray and discharge the condensed water in the second water tank of the indoor unit, wherein, in the process of controlling the first water pump to rotate forward for the third preset time, the control module 220 is also used to: when the water level of the second water tank reaches the second preset water level, control the first water pump to stop rotating forward, and control the spray pump to rotate forward for a fourth preset time; after the spray pump rotates forward for the fourth preset time, control the first water pump to rotate forward until the third preset time is reached; wherein the third preset time is the time for draining the condensed water in the first water tank, and the fourth preset time is less than the time for the spray pump to drain the condensed water in the second water tank.

[0100] In some embodiments of the present invention, the control module 220 is further configured to: upon receiving a shutdown instruction, control the spray pump to operate for a fifth preset time.

[0101] It should be noted that for details not disclosed in the control device of the air conditioner in the embodiment of the present invention, please refer to the details disclosed in the control method of the air conditioner in the embodiment of the present invention, and no further details will be given.

[0102] According to the control device of the air conditioner of the embodiment of the present invention, when the air conditioner is running in the heating mode, the state of the condensed water in the first water tank is obtained through the acquisition module. When the state of the condensed water is in the preset state, the control module controls the air conditioner to execute the ice-melting strategy, wherein the ice-melting strategy is to control the state of the heating component. When the ice-melting strategy is executed and certain conditions are met, if the state of the condensed water is still in the preset state, the drainage component is controlled to discharge the condensed water in the second water tank into the first water tank. Therefore, when the air conditioner is running in the heating mode, the device determines to execute the ice-melting strategy according to the state of the condensed water in the first water tank. When the ice-melting strategy is executed and certain conditions are met, if the state of the condensed water is still in the preset state, the drainage component is controlled to discharge the condensed water in the second water tank into the first water tank. In the case of low-temperature operation, the residual ice in the first water tank can be reduced, the reliability of the operation of the first water tank can be achieved, and the user experience can be improved.

[0103] Corresponding to the above embodiment, the present invention also proposes a computer-readable storage medium.

[0104] The computer-readable storage medium of the present invention stores a control program for an air conditioner, and the control program for the air conditioner implements the above-mentioned control method for the air conditioner when executed by a processor.

[0105] The computer-readable storage medium of the embodiment of the present invention can reduce the residual ice in the first water tank when operating at a low temperature by executing the above-mentioned air conditioner control method, thereby achieving the reliability of the operation of the first water tank and improving the user experience.

[0106] Corresponding to the above embodiment, the present invention also proposes an air conditioner.

[0107] like Figure 8 As shown, the air conditioner 300 of the embodiment of the present invention includes a memory 310, a processor 320, and an air conditioner control program stored in the memory 310 and executable on the processor 320. When the processor 320 executes the air conditioner control program, the above-mentioned air conditioner control method is implemented.

[0108] According to the air conditioner of the embodiment of the present invention, by executing the above-mentioned air conditioner control method, it is possible to reduce the residual ice in the first water tank when operating at a low temperature, achieve the reliability of the operation of the first water tank, and improve the user experience.

[0109] 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 purpose 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.

[0110] 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.

[0111] 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.

[0112] 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.

[0113] 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.

[0114] 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: a first water storage tank provided in an outdoor unit, a heating component provided in the first water storage tank, a second water storage tank provided in an indoor unit, and a drainage component communicating with the first water storage tank and the second water storage tank, wherein the heating component is configured to heat condensed water in the first water storage tank, and the method comprises: When the air conditioner is operated in a heating mode, obtaining a state of condensed water in the first water storage tank; When the state of the condensed water is a preset state, controlling the air conditioner to execute a defrosting strategy, wherein the defrosting strategy is to control the state of the heating component; When the defrosting strategy is executed to meet the first preset condition, if the state of the condensed water is still the preset state, the drainage component is controlled to discharge the condensed water in the second water storage tank into the first water storage tank.

2. The method according to claim 1, characterized in that Also includes: When the step of controlling the drainage component to drain the condensed water in the second water tank into the first water tank reaches a first preset time, or when it is detected that the water level of the first water tank reaches a first preset water level, the drainage component is controlled to stop draining water to the first water tank.

3. The method according to claim 2, characterized in that Also includes: When the defrosting strategy is executed and a second preset condition is satisfied, the drainage component is controlled to drain the water in the first water storage tank.

4. The method according to claim 1, characterized in that The heating assembly includes a refrigerant pipeline, and the refrigerant pipeline extends from one end of the indoor heat exchanger to the first water storage tank. The controlling the air conditioner to execute the ice-melting strategy includes: At least one control method is adopted, including increasing the operating frequency of the compressor, reducing the speed of the indoor fan, reducing the speed of the outdoor fan, increasing the opening of the throttling component, and switching the operating mode of the air conditioner.

5. The method according to claim 1, characterized in that The heating component includes a heater, and the controlling the air conditioner to execute the defrosting strategy includes: Turn on the heater, or turn on the heater and control the heating power of the heater.

6. The method according to claim 3, characterized in that The drainage component includes a first water pump disposed in the outdoor unit, and the step of controlling the drainage component to discharge the condensed water in the second water storage tank into the first water storage tank for a first preset time includes: Controlling the first water pump to reverse for the first preset time to pump the condensed water in the second water storage tank into the first water storage tank; Wherein, the first preset time is shorter than the time required to drain the condensed water in the second water storage tank.

7. The method according to claim 6, characterized in that The second preset condition is that the total time of executing the ice-melting strategy reaches the second preset time, or the state of the condensed water is the preset state. When the execution of the ice-melting strategy does not meet the first preset condition, the method further includes: When the water level of the first water storage tank reaches the first preset water level, controlling the first water pump to rotate forward for a third preset time; When the water level of the first water tank does not reach the first preset water level, the state of condensed water in the first water storage tank is obtained.

8. The method according to claim 6, characterized in that Controlling the drainage component to drain the water in the first water storage tank comprises: Control the first water pump to rotate forward for a third preset time.

9. The method according to claim 7 or 8, characterized in that: The drainage assembly includes a spray pump disposed in the indoor unit, and the spray pump is configured to spray and discharge condensed water in the second water storage tank of the indoor unit, wherein, in the process of controlling the first water pump to rotate forward for a third preset time, the method further includes: When the water level of the second water storage tank reaches a second preset water level, controlling the first water pump to stop forward rotation, and controlling the spray pump to forward rotation for a fourth preset time; After the spray pump rotates forward for the fourth preset time, controlling the first water pump to rotate forward until the third preset time is reached; The third preset time is the time it takes to drain the condensed water in the first water storage tank, and the fourth preset time is less than the time it takes for the spray pump to drain the condensed water in the second water storage tank.

10. The method according to claim 9, characterized in that Also includes: When the shutdown instruction is received, the spray pump is controlled to run for a fifth preset time.

11. A control device for an air conditioner, characterized in that: The air conditioner comprises: a first water storage tank provided in an outdoor unit, a heating component provided in the first water storage tank, a second water storage tank provided in an indoor unit, and a drainage component communicating with the first water storage tank and the second water storage tank, wherein the heating component is configured to heat condensed water in the first water storage tank, and the device comprises: An acquisition module, configured to acquire the state of condensed water in the first water storage tank when the air conditioner is operated in a heating mode; A control module, used for controlling the air conditioner to execute a defrosting strategy when the state of the condensed water is a preset state, wherein the defrosting strategy is to control the state of the heating component; The control module is further configured to control the drainage component to discharge the condensed water in the second water storage tank into the first water storage tank when a first preset condition is met during the execution of the defrosting strategy and if the state of the condensed water is still the preset state.

12. 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 1-10 is implemented.

13. 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 10 is implemented.

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