Control method and equipment of air conditioner, storage medium and product

Abstract

The invention provides a control method and device of an air conditioner, a storage medium and a product. The air conditioner comprises a first water receiving container used for collecting condensate water of an indoor unit, a first draining pump used for draining the condensate water in the first water receiving container through a first water pipe and a first heat exchanger arranged above the first water receiving container. The first water pipe is connected to the first heat exchanger; the method comprises the steps that when the air conditioner is in a heating working state and the first water level of condensate water in a first water receiving container is larger than a first preset water level, a humidification starting instruction is responded, and a first drainage pump is controlled to be started to operate. According to the air conditioner, indoor air can be humidified so as to consume condensate water in the first water receiving container, the use scene of the air conditioner is effectively expanded, and the drainage requirement of the condensate water of the air conditioner is met.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and in particular to a control method, device, storage medium and product for an air conditioner. Background Technology

[0002] In related technologies, during the cooling process of the indoor unit of an air conditioner, when water vapor in the air comes into contact with the low-temperature evaporator, it condenses into water and flows into the air conditioner's condensate drain pan. Normally, the condensate in the drain pan flows to a lower drain pipe and is discharged outdoors, or a drain pump discharges the condensate to a drain pipe above the drain pan and then outdoors. However, in some special cases (such as renovations of older buildings), there is no outdoor drain pipe, which cannot meet the air conditioner's condensate drainage needs. Summary of the Invention

[0003] In view of this, embodiments of this application provide a control method, device, storage medium, and product for an air conditioner, aiming to effectively expand the application scenarios of air conditioners and meet the condensate drainage requirements of air conditioners.

[0004] The technical solution of this application embodiment is implemented as follows:

[0005] This application provides a control method for an air conditioner, the air conditioner including a first water receiving container for collecting condensate from the indoor unit, a first drain pump for discharging the condensate from the first water receiving container through a first water pipe, and a first heat exchanger disposed above the first water receiving container; the first water pipe is connected to the first heat exchanger; the method includes:

[0006] When the air conditioner is in heating mode and the first water level of condensate in the first water receiving container is greater than the first preset water level, the first drain pump is controlled to start operation in response to the humidification start command.

[0007] In some implementations, the method further includes:

[0008] If the first water level is determined to be less than or equal to the first preset water level, then the first drainage pump is controlled to stop running.

[0009] In some embodiments, the air conditioner further includes a spray pump for spraying condensate from the first water receiving container into the outdoor air; the method further includes:

[0010] If the first water level is determined to be greater than or equal to the second preset water level and the first drainage pump stops running, then the spray pump is controlled to start running.

[0011] If the first water level is determined to be less than or equal to the first preset water level, the spray pump is controlled to continue running for a first preset time and then stop running.

[0012] The second preset water level is greater than the first preset water level.

[0013] In some embodiments, the air conditioner further includes a second water receiving container for collecting condensate from the outdoor unit and a second drain pump for discharging the condensate in the second water receiving container into the first water receiving container via a second water pipe; the method further includes:

[0014] If the water temperature of the condensate in the second water receiving container is determined to be greater than or equal to a preset temperature threshold, and the second water level of the condensate in the second water receiving container is determined to be greater than or equal to a third preset water level, the second drain pump is controlled to start running.

[0015] If the first water level is determined to be greater than or equal to the second preset water level, or if the second water level is determined to be less than or equal to the fourth preset water level, then the second drainage pump is controlled to stop operating.

[0016] The third preset water level is greater than the fourth preset water level.

[0017] In some embodiments, the air conditioner further includes a third drain pump for discharging condensate from the first water receiving container to the second water receiving container via a third water pipe, and a second heat exchanger disposed above the second water receiving container, the third water pipe being connected to the second heat exchanger; the method further includes:

[0018] When the air conditioner is in cooling mode, if it is determined that the first water level is greater than or equal to the second preset water level and the second water level is less than or equal to the fourth preset water level, then the third drain pump is controlled to start running.

[0019] If the first water level is determined to be less than or equal to the first preset water level, or if the second water level is determined to be greater than or equal to the third preset water level, then the third drainage pump is controlled to stop operating.

[0020] In some implementations, the method further includes:

[0021] If the first water level is determined to be greater than or equal to the second preset water level, and the second water level is determined to be greater than or equal to the third preset water level, then the spray pump is controlled to start running.

[0022] If the first water level is determined to be less than or equal to the first preset water level, or if the second water level is determined to be less than or equal to the fourth preset water level, then the spray pump is controlled to stop operating.

[0023] In some embodiments, the air conditioner further includes a pumping motor for spraying condensate from the second water receiving container onto the second heat exchanger via a pumping wheel; the method further includes:

[0024] If the third drainage pump is determined to be running, and / or if the second water level is determined to be greater than or equal to the third preset water level, then the water pumping motor is controlled to start running.

[0025] If the second water level is determined to be less than or equal to the fourth preset water level, the water pumping motor is controlled to stop running.

[0026] In some implementations, the method further includes:

[0027] In response to an instruction to exit the refrigeration working state, and upon determining that the second water level is greater than or equal to the fourth preset water level, the second drain pump is controlled to run for a second preset time and then stop running.

[0028] If the second water level is determined to be less than or equal to the fourth preset water level, then the water pump is controlled to stop running, and the spray pump is controlled to stop running after a third preset time.

[0029] This application embodiment provides another air conditioner, including:

[0030] The first water collection container is used to collect the condensate from the indoor unit;

[0031] A first drain pump and a first water pipe, the first drain pump being connected to the first water receiving container, and a first heat exchanger of the indoor unit being connected through the first water pipe;

[0032] The processor is configured to execute the control method for the air conditioner.

[0033] This application also provides a control device for an air conditioner, including: a processor and a memory for storing a computer program that can run on the processor, wherein the processor, when running the computer program, executes the steps of the control method for the air conditioner.

[0034] This application embodiment also provides a storage medium storing a computer program, which, when executed by a processor, implements the steps of the control method for the air conditioner.

[0035] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the control method for the air conditioner.

[0036] This application provides a control method, device, storage medium, and product for an air conditioner. The air conditioner includes a first water receiving container for collecting condensate from the indoor unit, a first drain pump for discharging the condensate from the first water receiving container through a first water pipe, and a first heat exchanger disposed above the first water receiving container. The first water pipe is connected to the first heat exchanger. The method includes: when the air conditioner is in heating mode and the first water level of the condensate in the first water receiving container is greater than a first preset water level, in response to a humidification start command, controlling the first drain pump to start operation. Thus, in heating mode, if the first water level of the condensate in the first water receiving container is greater than the first preset water level, activating the first drain pump to spray the condensate from the first water receiving container onto the first heat exchanger through the first water pipe can humidify the indoor air, thereby consuming the condensate in the first water receiving container, effectively expanding the application scenarios of the air conditioner and meeting the condensate discharge requirements of the air conditioner. Attached Figure Description

[0037] Figure 1 This is a flowchart illustrating the control method of an air conditioner according to an embodiment of this application;

[0038] Figure 2 This is a schematic diagram of the structure of an air conditioner control system in an application example of this application;

[0039] Figure 3 This is a schematic diagram of the condensate treatment method in an application example of this application;

[0040] Figure 4 This is a schematic diagram of the structure of an air conditioner according to an embodiment of this application;

[0041] Figure 5 This is a schematic diagram of the control device of the air conditioner according to an embodiment of this application. Detailed Implementation

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0043] This application provides a control method, device, storage medium, and product for an air conditioner, aiming to effectively expand the application scenarios of air conditioners and meet the condensate drainage requirements of air conditioners.

[0044] Before describing the control method of the air conditioner in the embodiments of this application, the components such as the water pump, water pump motor and water level switch in the air conditioner will be described by way of example.

[0045] Water pumps: Water pumps are machines that transport or pressurize liquids. They can transfer mechanical energy from a prime mover or other external energy sources to a liquid, increasing the liquid's energy. Primarily used for transporting liquids, they can be classified into positive displacement pumps, vane pumps, etc., based on different working principles. Positive displacement pumps utilize changes in the volume of their working chamber to transfer energy; vane pumps utilize the interaction between rotating vanes and water to transfer energy, and include centrifugal pumps, axial flow pumps, and mixed flow pumps. Centrifugal pumps and diaphragm pumps are commonly used for draining condensate from air conditioners.

[0046] Water-pumping motor: This can be a micro-motor, fixed near the heat exchanger of the air conditioner. A water-pumping wheel is mounted on the motor shaft, partially submerged in the water in the drip tray. When the motor operates, centrifugal force flings the water in the drip tray, turning it into small droplets that adhere to the heat exchanger. These droplets absorb heat from the heat exchanger during evaporation, improving the air conditioner's energy efficiency.

[0047] A water level switch is a switch used to control water levels. It is mainly divided into contact and non-contact types. Commonly used non-contact switches include capacitive level switches and magnetic reed-float switches (where a magnet is built into the float, which floats with the water level; when it approaches the reed switch, the magnetic field inside the float changes the on / off state of the reed switch, outputting a switching signal). Contact float level switches are the most widely used. Electrode level switches, electronic level switches, and capacitive level switches can also be implemented using contact methods. Float level switches are commonly used in air conditioners.

[0048] This application provides a control method for an air conditioner. The air conditioner includes a first water receiving container for collecting condensate from the indoor unit, a first drain pump for discharging the condensate from the first water receiving container through a first water pipe, and a first heat exchanger disposed above the first water receiving container; the first water pipe is connected to the first heat exchanger; as shown in the example. Figure 1 As shown, the method includes:

[0049] Step 101: When the air conditioner is in heating mode and the first water level of condensate in the first water receiving container is greater than the first preset water level, the first drain pump is controlled to start operation in response to the humidification start command.

[0050] For example, the first water receiving container can be an indoor water receiving tray for collecting condensate from the indoor unit; the first preset water level can be the non-overflow water level L1 of the condensate in the first water receiving container, which can be the lowest water level at which the condensate in the first water receiving container can be discharged. The first drain pump can be an indoor humidification pump, and the first water pipe can be an indoor humidification water pipe connected to the first drain pump. The first heat exchanger can be an indoor heat exchanger.

[0051] For example, the first water level can be the water level of the condensate in the first water receiving container (also known as the indoor water level). The first water level of the condensate in the first water receiving container can be obtained by monitoring the water level switch. Specifically, the first water level can be compared with a first preset water level based on the first water level switch to determine whether the first water level is greater than the first preset water level. The first preset water level corresponds to the location of the first water level switch. If it is determined that the first water level has risen to the position of the first water level switch, it indicates that the first water level is greater than the first preset water level. The first water level switch can be understood as an indoor water level switch.

[0052] For example, the humidifier activation command can be determined based on actual conditions. No limitation is made here. As an example, the humidifier activation command can be determined by receiving user commands, humidity sensor monitoring, or other setting procedures. The humidifier activation command can indicate that humidification is currently required.

[0053] For example, when the first water level of condensate in the first water receiving container is greater than the first preset water level, it indicates that the condensate in the first water receiving container is above the minimum water level that supports condensate discharge, thus satisfying the opening condition of the first drain pump, that is, the first drain pump can extract condensate from the first water receiving container. If a humidification start command has been received or generated, then in response to the humidification start command, the first drain pump can be controlled to spray the condensate in the first water receiving container onto the first heat exchanger through the first water pipe. It should be noted that in the heating operation state, the indoor heat exchanger is equivalent to a condenser for heat dissipation. Spraying condensate onto the indoor heat exchanger can utilize the heat conducted by the indoor heat exchanger to heat the condensate and generate water vapor, thereby humidifying the indoor air.

[0054] It should be noted that when the air conditioner is in heating mode, the condensate from the outdoor unit can be drained into the first water receiving container. At this time, if the first water level in the first water receiving container is higher than the first preset water level, the first drain pump will start operating in response to the humidification start command. It can be understood that when the air conditioner is in heating mode, if the indoor water level is higher than water level L1 (i.e., the aforementioned first preset water level) and humidification is required, the indoor humidification pump can be activated.

[0055] In one application example, the method also includes:

[0056] If the first water level is determined to be less than or equal to the first preset water level, the first drainage pump will be stopped.

[0057] For example, if the first water level of condensate in the first water receiving container is less than or equal to a first preset water level, indicating that the condensate in the first water receiving container is below or equal to the minimum water level that supports condensate discharge, the starting condition of the first drain pump is not met, meaning the first drain pump cannot extract condensate from the first water receiving container. In this case, the first drain pump can be directly controlled to stop operating. It is understood that if the indoor water level is below water level L1, humidification is impossible, and the indoor humidification pump can be stopped.

[0058] In some embodiments, a humidification shutdown command can be received or generated, and in response to the humidification shutdown command, the first drain pump can be controlled to stop operating. The humidification shutdown command can be determined according to actual conditions. No limitation is made here. As an example, the humidification shutdown command can be determined by receiving user commands, humidity sensor monitoring, or other setting procedures. The humidification shutdown command can indicate that humidification is not currently required.

[0059] In one application example, the air conditioner also includes a spray pump for spraying condensate from a first water collection container into outdoor air; the method further includes:

[0060] If the first water level is determined to be greater than or equal to the second preset water level and the first drainage pump stops running, then the spray pump is controlled to start running.

[0061] If the first water level is determined to be less than or equal to the first preset water level, the spray pump will continue to run for the first preset time and then stop running.

[0062] The second preset water level is greater than the first preset water level.

[0063] For example, the second preset water level can be the overflow water level L2 of the condensate in the first water receiving container, which can be the highest water level in the first water receiving container that can hold condensate. The first water level and the second preset water level can be compared based on the second water level switch to determine whether the first water level is greater than or equal to the second preset water level; specifically, the second preset water level corresponds to the position of the second water level switch. When the first water level rises to the position of the second water level switch, it indicates that the first water level is greater than or equal to the second preset water level. The second water level switch can be understood as an indoor water level switch.

[0064] For example, if the first water level is greater than or equal to the second preset water level, it indicates a risk of condensate overflow in the first water receiving container. If the first drain pump is stopped in response to a humidification shutdown command, the spray pump can be turned on. It is understood that the spray pump can be an indoor spray pump. If the indoor water level is higher than water level L2 (i.e., the aforementioned second preset water level) and humidification is not required, the indoor humidification pump is turned off, and the indoor spray pump is operated. The indoor spray pump pumps the condensate in the indoor water receiving pan to the outside, where it is atomized through the nozzles and discharged into the outdoor air.

[0065] For example, if the first water level is less than or equal to the first preset water level, indicating that there is no risk of condensate overflow in the first water receiving container, the spray pump can be controlled to continue running for a first preset time before stopping. The first preset time T1 can be reasonably set according to requirements. It is understood that if the indoor water level drops to level L1, the indoor spray pump will be forced to run for another T1 time before shutting down, in order to drain any remaining water from the spray pump's drain pipe and prevent the condensate in the drain pipe from freezing and damaging the drain pipe and the spray pump nozzles. If the indoor water level does not drop to level L1, the indoor spray pump will continue running until the indoor water level drops to level L1.

[0066] In one application example, the air conditioner further includes a second water receiving container for collecting condensate from the outdoor unit and a second drain pump for discharging the condensate from the second water receiving container into the first water receiving container via a second water pipe; the method also includes:

[0067] If the water temperature of the condensate in the second water receiving container is greater than or equal to a preset temperature threshold, and the second water level of the condensate in the second water receiving container is greater than or equal to a third preset water level, control the second drain pump to start running.

[0068] If the first water level is determined to be greater than or equal to the second preset water level, or if the second water level is determined to be less than or equal to the fourth preset water level, then the second drainage pump is controlled to stop operating.

[0069] The third preset water level is greater than the fourth preset water level.

[0070] For example, the second water receiving container can be an outdoor water receiving pan for collecting condensate from the outdoor unit. The third preset water level can be the overflow water level L3 of the condensate in the second water receiving container, which can be the highest water level in the second water receiving container that can hold condensate. It should be noted that the second preset water level and the third preset water level can be the same or different. The second water level can be the water level of the condensate in the second water receiving container (also known as the outdoor water level).

[0071] For example, the fourth preset water level can be the non-overflow water level L4 of the condensate in the second water receiving container, which can be the lowest water level at which the condensate in the second water receiving container can be discharged. It should be noted that the first preset water level and the fourth preset water level can be the same or different.

[0072] For example, the third preset water level corresponds to the location of the third water level switch. When the second water level rises to the position of the third water level switch, it indicates that the second water level is greater than or equal to the third preset water level. The third water level switch can be an outdoor upper water level switch. The fourth preset water level corresponds to the location of the fourth water level switch. When the second water level drops to the position of the fourth water level switch, it indicates that the second water level is less than or equal to the fourth preset water level. The fourth water level switch can be an outdoor lower water level switch.

[0073] For example, the preset temperature threshold can be determined according to the actual situation. No limitation is made here. As an example, the preset temperature threshold C0 can be reasonably set according to requirements. The preset temperature threshold can determine whether the condensate in the second water receiving container is an ice-water mixture or solid ice. If the water temperature of the condensate in the second water receiving container is determined to be greater than or equal to the preset temperature threshold, then the condensate in the second water receiving container can be determined to be liquid water, ensuring that the second drain pump draws liquid condensate, not solid ice, and avoiding dry pumping of the second drain pump.

[0074] For example, the second drain pump can be an outdoor water pump. The second water pipe can be an outdoor water inlet pipe connecting the second drain pump and the first water receiving container. If the second water level of the condensate in the second water receiving container is determined to be greater than or equal to a third preset water level, indicating that there is a risk of condensate overflow in the second water receiving container, the second drain pump can be controlled to start running to drain the condensate in the second water receiving container to the first water receiving container through the second water pipe.

[0075] For example, if it is determined that the first water level is greater than or equal to the second preset water level, indicating a risk of condensate overflow in the first water receiving container, the second drain pump can be controlled to stop operating, that is, to stop draining the condensate in the second water receiving container to the first water receiving container through the second water pipe. In some embodiments, the first drain pump or spray pump can be controlled to operate in order to consume the amount of condensate in the first water receiving container.

[0076] For example, if it is determined that the second water level is less than or equal to the fourth preset water level, indicating that there is no risk of condensate overflow in the second water receiving container, then the second drain pump is controlled to stop operating, that is, to stop the discharge of condensate in the second water receiving container to the first water receiving container through the second water pipe.

[0077] Understandably, if the air conditioner is set to heating and the outdoor condensate water temperature is ≥C0, the outdoor water pump will start when the outdoor water level rises to level L3 (the aforementioned third preset water level). The outdoor water pump will first pump the outdoor condensate water to the indoor drip tray. If the indoor water level rises to level L2, the outdoor water pump will stop operating; otherwise, the outdoor water pump will stop operating when the outdoor water level falls to level L4 (the aforementioned fourth preset water level).

[0078] In some embodiments, the air conditioner is controlled to shut down in response to a command to exit the heating operation state. Exemplarily, the command to exit the heating operation state can be determined based on actual circumstances. No limitation is made herein. As an example, the command to exit the heating operation state can be determined by receiving a user command, a timed shutdown command, or other preset procedures.

[0079] In one application example, the air conditioner further includes a third drain pump for discharging condensate from a first water receiving container to a second water receiving container via a third water pipe, and a second heat exchanger disposed above the second water receiving container, the third water pipe being connected to the second heat exchanger; the method further includes:

[0080] When the air conditioner is in cooling mode, if the first water level is greater than or equal to the second preset water level and the second water level is less than or equal to the fourth preset water level, then the third drain pump is controlled to start running.

[0081] If the first water level is determined to be less than or equal to the first preset water level, or if the second water level is determined to be greater than or equal to the third preset water level, then the third drainage pump is controlled to stop operating.

[0082] For example, the third drain pump can be an outdoor water spray pump, the third water pipe can be an outdoor water spray pipe, and the second heat exchanger can be an outdoor heat exchanger. When the third drain pump is running, it can spray the condensate in the first water receiving container onto the second heat exchanger through the third water pipe, and then flow into the second water receiving container. It can be understood that when the air conditioner is in cooling mode, if the indoor water level rises to level L2 and the outdoor water level falls to level L4, the outdoor water spray pump is turned on to spray water onto the outdoor condenser for heat dissipation.

[0083] In this embodiment, the condensate generated indoors during cooling is at a low temperature. At this time, the outdoor heat exchanger is a condenser. Spraying the condensate onto the outdoor heat exchanger can reduce the energy consumption of the air conditioner and improve its energy efficiency.

[0084] For example, during the operation of the third drainage pump, if the first water level is less than or equal to the first preset water level, indicating that there is no risk of condensate overflowing from the first water receiving container, the third drainage pump can be controlled to stop discharging the condensate from the first water receiving container. It is understood that if the indoor water level drops to water level L1, the outdoor sprinkler pump will be shut off.

[0085] For example, if the second water level is greater than or equal to the third preset water level, indicating a risk of condensate overflow in the second water receiving container, the third drain pump can be controlled to stop discharging condensate from the first water receiving container into the second water receiving container. It is understood that if the outdoor water level rises to level L3, the outdoor sprinkler pump will be shut off (to prevent overflow from the outdoor water receiving pan).

[0086] In one application example, the method also includes:

[0087] If the first water level is determined to be greater than or equal to the second preset water level, and the second water level is determined to be greater than or equal to the third preset water level, then the spray pump is controlled to start running.

[0088] If the first water level is determined to be less than or equal to the first preset water level, or if the second water level is determined to be less than or equal to the fourth preset water level, then the spray pump is controlled to stop operating.

[0089] For example, if the first water level is greater than or equal to the second preset water level and the second water level is greater than or equal to the third preset water level, it indicates that there is a risk of condensate overflow in both the first and second water receiving containers, making it impossible to drain the condensate from the first water receiving container into the second water receiving container. In this case, the spray pump can be activated to spray the condensate in the first water receiving container into the outdoor air. Specifically, when the spray pump is activated, it pumps the condensate in the first water receiving container outdoors, where it is atomized by the spray pump nozzle and discharged into the outdoor air.

[0090] In this embodiment, the condensate is pressurized by a spray pump and sprayed into the outdoor air, solving the problem of condensate drainage from the air conditioner in scenarios where there is no outdoor drain pipe in related technologies. Furthermore, the spray pump is activated when both the first and second water levels rise to the overflow level of the condensate, and deactivated when either the first or second water level falls to the non-overflow level of the condensate. This reduces the operating time of the spray pump, meets its lifespan requirements, and extends its service life.

[0091] In some embodiments, if the first water level is greater than or equal to the second preset water level when the spray pump stops operating, the first drain pump can be controlled to discharge the condensate in the first water receiving container into the second water receiving container. In this embodiment, since the outdoor sprinkler pump has a long lifespan, the usage time of the spray pump can be more effectively reduced by increasing the usage time of the outdoor sprinkler pump, thus meeting the lifespan requirements of the spray pump, extending its service life, and effectively ensuring the reliability of indoor condensate drainage.

[0092] Understandably, if the outdoor water level rises to level L3 and the outdoor sprinkler pump is shut off, and then the indoor water level rises again to level L2, the indoor misting pump will be turned on (to prevent the indoor drip tray from overflowing). The indoor misting pump will pump the condensate in the indoor drip tray to the outside, where it will be atomized through the nozzles and discharged into the outdoor air. If the indoor water level drops to level L1, the indoor misting pump will be turned off. If the outdoor water level drops to level L4 while the indoor misting pump is running, the outdoor sprinkler pump will be turned on and the indoor misting pump will be turned off.

[0093] In one application example, the air conditioner also includes a water-spraying motor for spraying condensate from a second water receiving container onto a second heat exchanger via a water-spraying impeller; the method further includes:

[0094] If the third drainage pump is confirmed to be running, and / or if the second water level is confirmed to be greater than or equal to the third preset water level, then the water pumping motor is controlled to start running.

[0095] If the second water level is determined to be less than or equal to the fourth preset water level, the water pumping motor will be stopped.

[0096] For example, during the process of the third drain pump being turned on to discharge condensate from the first water receiving container to the second water receiving container, the amount of condensate in the second water receiving container increases. In order to consume the amount of condensate in the second water receiving container, the water pumping motor can be turned on to pump the condensate from the second water receiving container onto the second heat exchanger. The water pumping motor is equipped with a water pumping wheel.

[0097] For example, if the second water level is greater than or equal to the third preset water level, it indicates that there is a risk of condensate overflow in the second water receiving container. In order to consume the amount of condensate in the second water receiving container, the water pumping motor can be controlled to start running to pump the condensate in the second water receiving container onto the second heat exchanger.

[0098] For example, if the second water level is less than or equal to the fourth preset water level, indicating that there is no risk of condensate overflow in the second water receiving container, the pumping motor can be controlled to stop pumping condensate from the second water receiving container onto the second heat exchanger. At this time, if the first water level is greater than or equal to the second preset water level, the third drain pump can be restarted.

[0099] It's understandable that the water pump motor can be the outdoor water pump motor. When the air conditioner is in cooling mode, if the indoor water level rises to level L2, the outdoor water pump and outdoor water pump motor are turned on to spray water onto the outdoor condenser for heat dissipation. If the outdoor water level rises to level L3, the outdoor water pump is turned off (to prevent overflow from the outdoor drip tray), and the outdoor water pump motor is turned on. If the outdoor water level drops to level L4 at this time, the outdoor water pump motor is turned off; if the indoor water level rises to level L2 at this time, the indoor mist pump operates. If the outdoor water level drops to level L4 while the indoor mist pump is running, the outdoor water pump motor is turned off. If the indoor water level has not dropped to level L1 at this time, the outdoor water pump is turned on again, and the indoor mist pump is turned off. It should be noted that if the outdoor water pump is turned on again, the water level of the condensate in the second drip tray will rise, and the outdoor water pump motor can be turned on again.

[0100] In this embodiment, the outdoor heat exchanger functions as a condenser during cooling. A third drain pump and a water-spraying motor are used to spray indoor condensate onto the outdoor condenser in summer, utilizing water evaporation to absorb heat and improve air conditioning energy efficiency. The water-spraying motor allows condensate to adhere to the outdoor heat exchanger, increasing condensate evaporation and further achieving energy savings. It also increases condensate consumption, reduces the operating time of the spray pump, and more effectively extends the service life of the spray pump.

[0101] In one application example, the method also includes:

[0102] In response to the command to exit the cooling operation state, and if it is determined that the second water level is greater than or equal to the fourth preset water level, the second drain pump is controlled to run for a second preset time and then stop running.

[0103] If the second water level is determined to be less than or equal to the fourth preset water level, the water pump motor will be stopped, and the spray pump will be stopped after running for a third preset time.

[0104] For example, the instruction to exit the cooling operation state can be determined according to the actual situation. No limitation is made here. As an example, the instruction to exit the cooling operation state can be determined by receiving user instructions, timed shutdown instructions, or other set procedures.

[0105] For example, if it is determined that the second water level is greater than or equal to the fourth preset water level, indicating the presence of residual condensate in the second water receiving container, the second drain pump can be controlled to start operating to drain the condensate in the second water receiving container to the first water receiving container through the inlet pipe, and then stop operating after a second preset time, so as to completely drain the condensate from the second water receiving container. The second preset time T2 can be reasonably set according to requirements.

[0106] For example, if it is determined that the second water level is less than or equal to the fourth preset water level, indicating that there is no residual condensate in the second water receiving container, the water pump motor can be controlled to stop operating, and the spray pump can be controlled to stop operating after a third preset time. The third preset time T3 can be reasonably set according to requirements.

[0107] Understandably, if the air conditioner is off cooling and the outdoor water level has dropped to level L4, then the outdoor water pump should be turned off and the spray pump should be forced to run for time T3 to remove any residual water from the indoor drip tray, preventing bacterial growth, and to drain any remaining water from the spray pump's drain pipe, preventing condensation from freezing in winter and damaging the drain pipe and spray pump nozzles. Otherwise, the outdoor water pump should be run for time T2 before checking the outdoor water level again, until the outdoor water level drops to level L4.

[0108] It should be noted that the first preset duration, the second preset duration, and the third preset duration can be the same or different, and no restrictions are imposed here.

[0109] To understand the embodiments of the present invention, the following description uses an air conditioner condensate water treatment method and the air conditioner itself as an example. This method is applied to an air conditioner control system. Figure 2 As shown, the air conditioner control system includes a central processing unit (CPU), a storage unit, a power supply unit, a display unit, a control unit, and components in the air conditioner (e.g., a water pump, a water pump motor, and a water level switch).

[0110] The CPU controls the operation of the air conditioner control system; the storage unit stores necessary information; the display unit displays the air conditioner's operating information and fault information (including water pump fault information); the control unit controls the operation of components such as the water pump and water pump motor in the air conditioner, and detects the water pump's operating speed, outdoor water temperature, and the position of the water level switch; after the water pump is powered on, it pumps the condensate produced by the air conditioner to the designated location; the water pump motor is used to pump the condensate onto the heat exchanger.

[0111] The power supply unit supplies power to the air conditioner control system and includes a CPU, storage unit, display unit, control unit, water pump, water pump motor, water level switch, etc.

[0112] The CPU exchanges information with the storage unit; the CPU controls the display unit to display; the CPU exchanges information with the control unit, issues control commands to the control unit, and collects control information and component operation status feedback from the control unit; the control unit controls the operation of components in the air conditioner, including the water pump and water pump motor, and detects information such as the water pump speed, outdoor water temperature, and water level switch position.

[0113] like Figure 3 As shown, the process of condensate treatment includes:

[0114] Step 301: Turn on the air conditioner.

[0115] Step 302: Determine if the air conditioner is on cooling mode. If yes, proceed to step 304; otherwise, proceed to step 303.

[0116] Step 303: Determine if the air conditioner is in heating mode. If yes, proceed to step 318; otherwise, proceed to step 302.

[0117] Step 304: Determine if the indoor water level has risen to level L2. If yes, proceed to step 305; otherwise, proceed to step 316.

[0118] For example, when the indoor water level rises to level L2 (i.e., the aforementioned second preset water level), it indicates that there is a risk of condensate overflow in the first water receiving container.

[0119] Step 305: The outdoor water pump and the outdoor water jet motor are running.

[0120] For example, the outdoor water pump sprays the condensate in the first water receiving container onto the second heat exchanger through the third water pipe, and the condensate flows into the second water receiving container; the outdoor water pumping motor sprays the condensate in the second water receiving container onto the second heat exchanger through the water pumping wheel, so as to consume the condensate in the second water receiving container.

[0121] Step 306: Determine if the outdoor water level has risen to level L3. If yes, proceed to step 307; otherwise, proceed to step 311.

[0122] For example, when the outdoor water level rises to level L3 (i.e., the aforementioned third preset water level), it indicates that there is a risk of condensate overflow in the second water receiving container.

[0123] Step 307: Turn off the outdoor sprinkler pump and turn on the outdoor water pump motor.

[0124] For example, the condensate in the first water receiving container is stopped from being sprayed onto the second heat exchanger through the third water pipe to avoid overflow of the second water receiving container; the condensate in the second water receiving container is continued to be sprayed onto the second heat exchanger through the water jet to consume the condensate in the second water receiving container.

[0125] Step 308: Determine if the indoor water level has risen to level L2. If yes, proceed to step 313; otherwise, proceed to step 309.

[0126] For example, if the outdoor water level rises to level L3 and the indoor water level rises to level L2, it indicates that there is a risk of condensate overflow in both the first and second water receiving containers.

[0127] Step 309: Determine if the outdoor water level has dropped to level L4. If yes, proceed to step 310; otherwise, proceed to step 316.

[0128] For example, when the outdoor water level drops to level L4 (i.e., the aforementioned fourth preset water level), it indicates that there is no risk of condensate overflow in the second water receiving container.

[0129] Step 310: Turn on the outdoor sprinkler pump, turn off the indoor spray pump, turn off the outdoor water pump motor, and proceed to step 306.

[0130] For example, when the outdoor water level drops to level L4, the condensate in the second water receiving container is stopped from being sprayed onto the second heat exchanger through the water pump wheel to avoid the water pump motor running dry.

[0131] If the indoor water level does not drop to level L1 and the outdoor water level drops to level L4, the condensate in the first water receiving container is sprayed onto the second heat exchanger through the third water pipe to consume the condensate in the first water receiving container. The condensate in the first water receiving container is then stopped from being sprayed into the outdoor air, thereby reducing the operating time of the spray pump and increasing its service life.

[0132] It should be noted that if the outdoor water pump is restarted, the water level of the condensate in the second water inlet container will rise, and the outdoor water pump motor can be restarted.

[0133] Step 311: Determine if the indoor water level has dropped to water level L1. If yes, proceed to step 312; otherwise, proceed to step 305.

[0134] For example, when the indoor water level drops to water level L1 (i.e., the aforementioned first preset water level), it indicates that there is no risk of condensate overflow in the first water receiving container.

[0135] Step 312: Stop the outdoor water pump and proceed to step 316.

[0136] For example, the condensate in the first water receiving container is stopped from being sprayed onto the second heat exchanger through the third water pipe to avoid the outdoor water pump running dry.

[0137] Step 313: Indoor spray pump operation.

[0138] For example, an indoor spray pump sprays condensate from a first water collection container into the outdoor air to consume the condensate in the first water collection container.

[0139] Step 314: Determine if the indoor water level has dropped to water level L1. If yes, proceed to step 315; otherwise, proceed to step 309.

[0140] Step 315: The indoor spray pump stops running.

[0141] For example, the spraying of condensate from the first water receiving container into the outdoor air is stopped to prevent the indoor spray pump from running dry.

[0142] Step 316: Determine if the air conditioner is off cooling. If yes, proceed to step 317; otherwise, proceed to step 302.

[0143] Step 317: Determine if the outdoor water level has dropped to level L4. If yes, proceed to step 335; otherwise, proceed to step 334.

[0144] Step 318: Determine if the outdoor water temperature is greater than or equal to C0. If yes, proceed to step 319; otherwise, proceed to step 302.

[0145] For example, if the outdoor water temperature is greater than or equal to C0, it indicates that the condensate in the second water receiving container is in a liquid water state.

[0146] For example, C0 is a natural number greater than or equal to 0, such as 4°C.

[0147] Step 319: Determine if the outdoor water level has risen to level L3. If yes, proceed to step 320; otherwise, proceed to step 324.

[0148] Step 320: Outdoor water pump starts operating.

[0149] For example, an outdoor water pump discharges condensate from the second water receiving container into the first water receiving container through a second water pipe to consume the condensate in the second water receiving container.

[0150] Step 321: Determine if the indoor water level has risen to level L2. If yes, proceed to step 322; otherwise, proceed to step 323.

[0151] Step 322: Stop the outdoor water pump and proceed to step 325.

[0152] For example, the discharge of condensate from the second water receiving container into the first water receiving container is stopped through the second water pipe to avoid overflow of the first water receiving container.

[0153] Step 323: Determine if the outdoor water level has dropped to level L4. If yes, proceed to step 324; otherwise, proceed to step 320.

[0154] Step 324: The outdoor water pump stops running.

[0155] For example, the discharge of condensate from the second water receiving container to the first water receiving container is stopped through the second water pipe to avoid the outdoor water pump running dry.

[0156] Step 325: Determine if humidification is needed. If yes, proceed to step 326; otherwise, proceed to step 329.

[0157] Step 326: Indoor humidification pump operation.

[0158] For example, if humidification is required, the indoor humidification pump discharges the condensate in the first water receiving container through the first water pipe to the first heat exchanger, and then flows into the first water receiving container to humidify the indoor air, thereby consuming the condensate in the first water receiving container.

[0159] Step 327: Determine if the indoor water level has dropped to water level L1. If yes, proceed to step 328; otherwise, proceed to step 325.

[0160] Step 328: Turn off the indoor humidification pump and proceed to step 333.

[0161] For example, the discharge of condensate from the first water receiving container to the first heat exchanger is stopped through the first water pipe to avoid the indoor humidification pump running dry.

[0162] Step 329: The indoor humidification pump stops running, and the indoor spray pump starts running.

[0163] For example, if humidification is not required, the discharge of condensate from the first water container to the first heat exchanger through the first water pipe is stopped, and the indoor spray pump sprays the condensate from the first water container into the outdoor air to consume the condensate in the first water container.

[0164] Step 330: Determine if the indoor water level has dropped to water level L1. If yes, proceed to step 332; otherwise, proceed to step 331.

[0165] Step 331: The indoor spray pump starts running, proceed to step 330.

[0166] For example, the condensate in the first water receiving container is continued to be sprayed into the outdoor air, and the indoor water level is determined.

[0167] Step 332: The indoor spray pump is shut down after running for time T1.

[0168] For example, if the indoor water level drops to level L1, the indoor spray pump is forced to run for another time T1 to drain the remaining water in the drain pipe, preventing the water in the drain pipe from freezing due to low temperature and damaging the drain pipe and the nozzle of the indoor spray pump. Then the indoor spray pump is turned off.

[0169] For example, T1 can be set reasonably according to needs, such as 2 minutes.

[0170] Step 333: Determine if the air conditioner is in heating mode. If yes, proceed to step 336; otherwise, proceed to step 302.

[0171] Step 334: After the outdoor water pump has been running for T2 hours, proceed to step 317.

[0172] For example, if the outdoor water level has not dropped to level L4, the outdoor water pump is run for time T2 before the outdoor water level is determined, so as to drain the condensate in the second water receiving container and prevent bacterial growth.

[0173] For example, T2 can be set reasonably according to needs, such as 1 minute.

[0174] Step 335: The outdoor water pump motor stops running, the indoor spray pump stops running after time T3, and then proceed to step 336.

[0175] For example, the outdoor water pump motor is turned off and the indoor spray pump is forced to run for time T3 to remove the residual water from the first water container to prevent bacterial growth, and to remove the residual water from the drain pipe to prevent the water in the low-temperature drain pipe from freezing and damaging the drain pipe and the nozzle of the indoor spray pump.

[0176] For example, T3 can be set reasonably according to needs, such as 3 minutes.

[0177] Step 336: Stop.

[0178] This application embodiment also provides an air conditioner, such as Figure 4 As shown, the air conditioner includes: a first water receiving container 401, an indoor unit 402, a first drain pump 403, a first water pipe 404, and a first heat exchanger 405; wherein, the first water receiving container 401 is used to collect condensate from the indoor unit 402; the first drain pump 403 is connected to the first water receiving container 401 and to the first heat exchanger 405 of the indoor unit 402 via the first water pipe 404; the air conditioner also includes a processor configured to, in response to a humidification start command, control the first drain pump 403 to start operation when the air conditioner is in heating mode and the first water level of the condensate in the first water receiving container 401 is greater than a first preset water level, discharge the condensate in the first water receiving container 401 on the indoor unit 402 through the first water pipe 404 to the top of the first heat exchanger 405.

[0179] In some embodiments, the processor may also be configured to control the first drainage pump 403 to stop operating if it is determined that the first water level is less than or equal to the first preset water level.

[0180] In some embodiments, the air conditioner may further include a spray pump 406, a first water inlet pipe 407, and a first water outlet pipe 408; the spray pump 406 is connected to a first water receiving container 401 via the first water inlet pipe 407, and to a spray nozzle 409 facing outdoors via the first water outlet pipe 408. Exemplarily, the first water inlet pipe 407 may be an indoor water inlet pipe, and the first water outlet pipe 408 may be a spray pump outlet pipe. The spray pump 406 may be positioned above the first water receiving container 401.

[0181] The processor can also be configured to, upon determining that the first water level is greater than or equal to the second preset water level and the first drainage pump 403 stops running, control the spray pump 406 to start running and spray the condensate in the first water receiving container 401 into the outdoor air; upon determining that the first water level is less than or equal to the first preset water level, control the spray pump 406 to continue running for a first preset time and then stop running; wherein the second preset water level is greater than the first preset water level.

[0182] In some embodiments, the air conditioner may further include a second water collection container 410, an outdoor unit 411, a second drain pump 412, and a second water pipe 413; the second water collection container 410 is used to collect condensate from the outdoor unit 411; the second drain pump 412 is connected to the second water collection container 410 and to the first water collection container 401 via the second water pipe 413.

[0183] The processor can also be configured to execute actions such as determining that the water temperature of the condensate in the second water receiving container 410 is greater than or equal to a preset temperature threshold, and determining that the second water level of the condensate in the second water receiving container 410 is greater than or equal to a third preset water level, controlling the second drain pump 412 to start running, and draining the condensate in the second water receiving container 410 on the outdoor unit 411 side to the first water receiving container 401 through the second water pipe 413; determining that the first water level is greater than or equal to the second preset water level, or determining that the second water level is less than or equal to the fourth preset water level, then controlling the second drain pump 412 to stop running; wherein, the third preset water level is greater than the fourth preset water level.

[0184] In some embodiments, the air conditioner may further include a third drain pump 414, a third water pipe 415, and a second heat exchanger 416; the third drain pump 414 is connected to the first water receiving container 401, and the second heat exchanger 416 is connected to the outdoor unit 411 via the third water pipe 415.

[0185] The processor can also be configured to, when the air conditioner is in cooling mode, determine if the first water level is greater than or equal to the second preset water level and the second water level is less than or equal to the fourth preset water level, then control the third drain pump 414 to start running, and discharge the condensate in the first water receiving container 401 through the third water pipe 415 to the second water receiving container 410 or above the second heat exchanger 416 above the second water receiving container 410; or determine if the first water level is less than or equal to the first preset water level, or if the second water level is greater than or equal to the third preset water level, then control the third drain pump 414 to stop running.

[0186] In some embodiments, the processor may also be configured to control the spray pump 406 to start running if it is determined that the first water level is greater than or equal to the second preset water level and the second water level is greater than or equal to the third preset water level; or to control the spray pump 406 to stop running if it is determined that the first water level is less than or equal to the first preset water level, or if it is determined that the second water level is less than or equal to the fourth preset water level.

[0187] In some embodiments, the air conditioner may further include a water pump motor 417 disposed within the second water receiving container 410 near the second heat exchanger 416. The processor may also be configured to determine that the third drain pump 414 is turned on, and / or, if the second water level is determined to be greater than or equal to a third preset water level, control the water pump motor 417 to turn on, spraying condensate from the second water receiving container 410 onto the second heat exchanger 416 via a water pump wheel; if the second water level is determined to be less than or equal to a fourth preset water level, control the water pump motor 417 to stop operating.

[0188] In some embodiments, the processor may also be configured to execute an instruction in response to exiting the cooling operation state, and if it is determined that the second water level is greater than or equal to the fourth preset water level, then control the second drain pump 412 to run for a second preset time and then stop running; if it is determined that the second water level is less than or equal to the fourth preset water level, then control the water pump motor 417 to stop running, and control the spray pump 406 to run for a third preset time and then stop running.

[0189] In some embodiments, the air conditioner further includes an indoor upper water level switch 4011 and an indoor lower water level switch 4012 disposed in a first water receiving container 401; an outdoor upper water level switch 4101 and an outdoor lower water level switch 4102 disposed in a second water receiving container 410; and an outdoor water temperature sensor 4103 disposed in the second water receiving container 410.

[0190] In some embodiments, the air conditioner may further include an indoor water spray box 418 disposed above the first heat exchanger 405 and an outdoor water spray box 419 disposed above the second heat exchanger 416. A second water pipe 413 may be connected to the indoor water spray box 418 to pump condensate from the first water receiving container 401 into the indoor water spray box 418; a third water pipe 415 may be connected to the outdoor water spray box 419 to pump condensate from the first water receiving container 401 into the outdoor water spray box 419. The indoor water spray box 418 and the outdoor water spray box 419 may be water tanks with through holes at the bottom, allowing condensate to flow out and spray onto the first heat exchanger 405 and the second heat exchanger 416.

[0191] It should be noted that the number and location of the air conditioner's spray nozzles can be adjusted according to the actual situation, as long as the condensate can be atomized and discharged into the outdoor air through the spray nozzles. No specific restrictions are imposed here.

[0192] To implement the method of the embodiments of this application, the embodiments of this application also provide a control device for an air conditioner. Figure 5 This only shows an exemplary structure of the control device for the air conditioner, not the entire structure; implementation is possible as needed. Figure 5 The structure shown may be part or all of the structure.

[0193] like Figure 5 As shown in the embodiment of this application, the control device 500 for an air conditioner includes at least one processor 501, a memory 502, and a user interface 503. The various components in the control device 500 are coupled together via a bus system 504. It can be understood that the bus system 504 is used to implement communication between these components. In addition to a data bus, the bus system 504 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in… Figure 5The general designated all buses as Bus System 504.

[0194] The user interface 503 may include a monitor, keyboard, mouse, trackball, click wheel, buttons, touchpad, or touch screen.

[0195] The memory 502 in this embodiment is used to store various types of data to support the operation of the control device. Examples of such data include any computer program used to operate on the control device.

[0196] The air conditioner control method disclosed in this application embodiment can be applied to, or implemented by, processor 501. Processor 501 may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the air conditioner control method can be completed by the integrated logic circuitry in the hardware of processor 501 or by instructions in software form. The processor 501 can be a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Processor 501 can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. A general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of this application can be directly manifested as execution by a hardware decoding processor, or execution by a combination of hardware and software modules in the decoding processor. The software modules can be located in a storage medium, specifically memory 502. Processor 501 reads information from memory 502 and, in conjunction with its hardware, completes the steps of the air conditioner control method provided in the embodiments of this application.

[0197] In an exemplary embodiment, the control device for the air conditioner may be implemented by one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers (MCUs), microprocessors, or other electronic components to perform the aforementioned method.

[0198] It is understood that memory 502 can be volatile memory or non-volatile memory, or both. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), ferromagnetic random access memory (FRAM), flash memory, magnetic surface memory, optical disc, or compact disc read-only memory (CD-ROM); magnetic surface memory can be disk storage or magnetic tape storage. Volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), SyncLink Dynamic Random Access Memory (SLDRAM), and Direct Rambus Random Access Memory (DRRAM).The memories described in the embodiments of this application are intended to include, but are not limited to, these and any other suitable types of memories.

[0199] In an exemplary embodiment, this application also provides a storage medium, namely a computer storage medium, specifically a computer-readable storage medium, such as a memory 502 storing a computer program. This computer program can be executed by the processor 501 of the air conditioner's control device 500 to complete the steps described in the method of this application embodiment. The computer-readable storage medium can be a ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or CD-ROM, etc.

[0200] In an exemplary embodiment, this application also provides a computer program product, including a computer program that can be executed by a processor 501 of an air conditioner control device 500 to perform the steps described in any of the foregoing methods.

[0201] It should be noted that terms such as "first" and "second" are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0202] Furthermore, the technical solutions described in the embodiments of this application can be combined arbitrarily without conflict.

[0203] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A control method for an air conditioner, characterized in that, The air conditioner includes a first water receiving container for collecting condensate from the indoor unit, a first drain pump for discharging the condensate from the first water receiving container through a first water pipe, and a first heat exchanger disposed above the first water receiving container. The first water pipe is connected to the first heat exchanger; the method includes: When the air conditioner is in heating mode and the first water level of condensate in the first water receiving container is greater than the first preset water level, the first drain pump is controlled to start operation in response to the humidification start command.

2. The method according to claim 1, characterized in that, The method further includes: If the first water level is determined to be less than or equal to the first preset water level, then the first drainage pump is controlled to stop running.

3. The method according to claim 1 or 2, characterized in that, The air conditioner further includes a spray pump for spraying condensate from the first water receiving container into the outdoor air; the method further includes: If the first water level is determined to be greater than or equal to the second preset water level and the first drainage pump stops running, then the spray pump is controlled to start running. If the first water level is determined to be less than or equal to the first preset water level, the spray pump is controlled to continue running for a first preset time and then stop running. The second preset water level is greater than the first preset water level.

4. The method according to claim 3, characterized in that, The air conditioner further includes a second water receiving container for collecting condensate from the outdoor unit and a second drain pump for discharging the condensate from the second water receiving container into the first water receiving container through a second water pipe; the method further includes: If the water temperature of the condensate in the second water receiving container is determined to be greater than or equal to a preset temperature threshold, and the second water level of the condensate in the second water receiving container is determined to be greater than or equal to a third preset water level, the second drain pump is controlled to start running. If the first water level is determined to be greater than or equal to the second preset water level, or if the second water level is determined to be less than or equal to the fourth preset water level, then the second drainage pump is controlled to stop running. The third preset water level is greater than the fourth preset water level.

5. The method according to claim 4, characterized in that, The air conditioner further includes a third drain pump for discharging condensate from the first water receiving container to the second water receiving container through a third water pipe, and a second heat exchanger disposed above the second water receiving container, the third water pipe being connected to the second heat exchanger; the method further includes: When the air conditioner is in cooling mode, if it is determined that the first water level is greater than or equal to the second preset water level and the second water level is less than or equal to the fourth preset water level, then the third drain pump is controlled to start running. If the first water level is determined to be less than or equal to the first preset water level, or if the second water level is determined to be greater than or equal to the third preset water level, then the third drainage pump is controlled to stop operating.

6. The method according to claim 5, characterized in that, The method further includes: If the first water level is determined to be greater than or equal to the second preset water level, and the second water level is determined to be greater than or equal to the third preset water level, then the spray pump is controlled to start running. If the first water level is determined to be less than or equal to the first preset water level, or if the second water level is determined to be less than or equal to the fourth preset water level, then the spray pump is controlled to stop operating.

7. The method according to claim 5, characterized in that, The air conditioner further includes a water-spraying motor for spraying condensate from the second water receiving container onto the second heat exchanger via a water-spraying wheel; the method further includes: If the third drainage pump is determined to be running, and / or if the second water level is determined to be greater than or equal to the third preset water level, then the water pumping motor is controlled to start running. If the second water level is determined to be less than or equal to the fourth preset water level, the water pumping motor is controlled to stop running.

8. The method according to claim 7, characterized in that, The method further includes: In response to an instruction to exit the refrigeration working state, and upon determining that the second water level is greater than or equal to the fourth preset water level, the second drain pump is controlled to run for a second preset time and then stop running. If the second water level is determined to be less than or equal to the fourth preset water level, then the water pump is controlled to stop running, and the spray pump is controlled to stop running after a third preset time.

9. An air conditioner, characterized in that, include: The first water collection container is used to collect the condensate from the indoor unit; A first drain pump and a first water pipe, the first drain pump being connected to the first water receiving container, and a first heat exchanger of the indoor unit being connected through the first water pipe; A processor configured to perform the method described in any one of claims 1 to 8.

10. A control device for an air conditioner, characterized in that, include: The processor and memory for storing computer programs that can run on the processor, wherein, The processor, when running a computer program, performs the steps of the method according to any one of claims 1 to 8.

11. A storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 8.

12. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 8.

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