Self-cleaning method of dehumidifier and dehumidifier

Abstract

The application provides a self-cleaning method of a dehumidifier and the dehumidifier, and relates to the technical field of dehumidifiers. The dehumidifier comprises a compressor, a fan and an evaporator. The dehumidifier at least has a self-cleaning mode. The method comprises the following steps: in the case that the dehumidifier starts the self-cleaning mode, the compressor is controlled to continuously operate at a constant power, so that the surface of the evaporator is frosted; after the surface of the evaporator is frosted, the compressor is controlled to be in an off state, and the rotating speed of the fan is adjusted, so that the surface of the evaporator is defrosted; wherein the corresponding rotating speed of the fan in the process of defrosting the surface of the evaporator is greater than the corresponding rotating speed of the fan in the process of frosting the surface of the evaporator.

Description

Technical Field

[0001] This application relates to the field of dehumidifier technology, and more particularly to a self-cleaning method for a dehumidifier and a dehumidifier. Background Technology

[0002] In the use of a dehumidifier, the evaporator is one of the key components. Its main function is to condense the moisture in the air by cooling the air, thereby achieving the effect of dehumidification.

[0003] However, over time, dust, bacteria, and other contaminants can easily accumulate on the evaporator surface, such as the fins. These deposits not only reduce the dehumidifier's efficiency but can also affect indoor air quality and even lead to health problems. Therefore, cleaning these deposits to keep the evaporator surface clean is crucial. Summary of the Invention

[0004] This application provides a self-cleaning method for a dehumidifier and a dehumidifier for cleaning dirt from the surface of the evaporator to keep the evaporator surface clean.

[0005] In a first aspect, this application provides a self-cleaning method for a dehumidifier, the dehumidifier comprising a compressor, a fan, and an evaporator; the dehumidifier having at least a self-cleaning mode, the method comprising:

[0006] When the dehumidifier starts its self-cleaning mode, the compressor is controlled to run continuously at a constant power, causing frost to form on the surface of the evaporator.

[0007] After frost forms on the evaporator surface, the compressor is shut off, and the fan speed is adjusted to defrost the evaporator surface.

[0008] The fan speed during the defrosting process on the evaporator surface is greater than the fan speed during the frosting process on the evaporator surface.

[0009] As one possible implementation of this application, the fan is in a closed state during the frosting process on the evaporator surface;

[0010] Alternatively, the method may further include:

[0011] During the frosting process on the evaporator surface, the fan speed is reduced.

[0012] As one possible implementation of this application, the dehumidifier further includes an exhaust pipe, and the method further includes:

[0013] During the frosting process on the evaporator surface, the fan speed is positively correlated with the temperature of the exhaust pipe.

[0014] As one possible implementation of this application, the dehumidifier further includes a temperature sensor, the exhaust pipe is connected to the compressor, and the temperature sensor is used to detect a first temperature of the exhaust pipe; during the frosting process on the evaporator surface, the fan speed is positively correlated with the temperature of the exhaust pipe, including:

[0015] During the frosting process on the evaporator surface, the target speed of the fan is determined based on the first temperature detected by the temperature sensor, and the fan is controlled to operate at the target speed; the target speed is positively correlated with the first temperature.

[0016] As one possible implementation of this application, during the frosting process on the evaporator surface, the fan operates at a first speed suitable for the frosting conditions; determining the target speed of the fan based on the first temperature detected by the temperature sensor, and controlling the fan to operate at the target speed, includes:

[0017] When the first temperature is determined to be greater than or equal to a preset temperature threshold, the first rotational speed of the fan is increased; the preset temperature threshold is less than a safe temperature threshold.

[0018] Alternatively, when it is determined that the first temperature is less than the preset temperature threshold, the fan is controlled to continue to maintain the first rotational speed.

[0019] As one possible implementation of this application, the dehumidifier further includes a temperature sensor for detecting a second temperature of the coil in the evaporator; controlling the compressor to operate continuously at a constant power to cause frost to form on the evaporator surface includes:

[0020] The compressor is controlled to run at a constant power for a first duration until the second temperature detected by the temperature sensor is lower than the preset frosting temperature, and the duration for which the second temperature is lower than the preset frosting threshold is greater than the preset frosting duration, so that the surface of the evaporator is frosted.

[0021] As one possible implementation of this application, the dehumidifier further includes a temperature sensor for detecting a second temperature of the coil in the evaporator; adjusting the fan speed to defrost the evaporator surface includes:

[0022] The fan is controlled to run at a second speed for a second duration until the second temperature detected by the temperature sensor reaches the preset defrosting temperature, so that the surface of the evaporator defrosts.

[0023] As one possible implementation of this application, the second rotational speed is the maximum rotational speed of the fan.

[0024] As one possible implementation of this application, the dehumidifier also has a dehumidification mode. When the dehumidifier is in the dehumidification mode, the fan has a third speed, which is greater than the speed of the fan during the frosting process on the evaporator surface.

[0025] As one possible implementation of this application, the method further includes:

[0026] The operating time of the fan during the frosting process on the evaporator surface is determined based on the ambient temperature and / or ambient relative humidity.

[0027] As one possible implementation of this application, the ambient temperature is positively correlated with the operating time of the fan during the frosting process on the evaporator surface;

[0028] And / or, the relative humidity of the environment is negatively correlated with the operating time of the fan during the frosting process on the evaporator surface.

[0029] As one possible implementation of this application, the method further includes:

[0030] During the defrosting process on the evaporator surface, the rotation direction of the fan is adjusted to reverse its direction.

[0031] In a second aspect, this application provides a dehumidifier comprising a compressor, a fan, an evaporator, and a controller, the controller being configured to perform the method as described in any one of the first aspects.

[0032] In summary, this application provides a self-cleaning method and a dehumidifier. By intelligently controlling the operation of the compressor and fan, it achieves active frosting and efficient defrosting of the evaporator surface, thereby effectively cleaning the evaporator surface. Specifically, when the dehumidifier starts its self-cleaning mode, the compressor operates at a constant power, the temperature of the evaporator surface decreases, and moisture in the air condenses into frost on the evaporator surface. This frosting process captures tiny particles such as dust, dirt, and bacteria on the evaporator surface, as these particles are encased in the frost layer. Furthermore, after frost has formed on the evaporator surface, the compressor is turned off, and the evaporator stops cooling. As the frost on the surface of the evaporator begins to melt, the fan speed is increased during the defrosting process. This accelerates airflow, promoting the melting of frost and the evaporation of moisture. The melted water carries away trapped dust, bacteria, and other particles, thus cleaning the evaporator surface. In this way, the natural process of frosting and defrosting avoids the tedious steps of manual disassembly and cleaning, as well as the material corrosion problems that may occur with chemical cleaning. Furthermore, this self-cleaning method utilizes the dehumidifier's own function to achieve self-cleaning, reducing additional cleaning costs. In addition, increasing the fan speed during the defrosting process accelerates the melting of frost and the evaporation of moisture, improving cleaning efficiency. Attached Figure Description

[0033] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0034] Figure 1 This is a schematic diagram of an application scenario provided by an embodiment of this application;

[0035] Figure 2 This is a schematic diagram of the structure of a dehumidifier provided in an embodiment of this application;

[0036] Figure 3 A schematic flowchart illustrating a self-cleaning method for a dehumidifier provided in an embodiment of this application;

[0037] Figure 4 A schematic diagram of the structure of a self-cleaning device for a dehumidifier provided in an embodiment of this application;

[0038] Figure 5 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0039] Figure 6 This is a partial structural diagram of a dehumidifier provided in an embodiment of this application.

[0040] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0041] To facilitate a clear description of the technical solutions in the embodiments of this application, the terms "first" and "second" are used in the embodiments of this application to distinguish identical or similar items with substantially the same function and effect. For example, "first device" and "second device" are merely used to distinguish different devices and do not limit their order. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and the terms "first" and "second" do not necessarily imply that they are different.

[0042] It should be noted that, in this application, the terms "exemplary" or "for example" are used to indicate that something is being described as an example, illustration, or illustration. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0043] In this application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0044] First, the core components of the dehumidifier involved in this application will be explained.

[0045] Compressor: Used to compress refrigerant to provide cooling capacity. It is usually of piston, screw or scroll type, such as a rotary compressor with a rated power of 300W, a maximum discharge temperature of 90℃ and a rated current of 2.5A.

[0046] Fans: Used to draw humid air into the dehumidifier and exhaust the treated dry air. They typically consist of blades driven by an electric motor. For example, a fan can be a DC fan, which is a fan driven by a DC power supply. DC fans support 0%-100% speed adjustment and have a maximum airflow of 120 m³ / h. 3 / h.

[0047] Evaporator: Used to absorb heat from the air and cause the moisture in the air to condense into water droplets. It is usually a coil structure, consisting of coils and fins, and its surface is prone to frost formation.

[0048] Condenser: Used to cool and condense the refrigerant from the compressor into a liquid, and also to heat the air to restore it to room temperature. It is usually composed of copper tubes and aluminum fins.

[0049] Water pump: Used to drain condensate from the water tank to a designated drain location. The water tank is used to collect condensate.

[0050] Exhaust pipe: Connected to the compressor, used to discharge the air processed by the dehumidifier.

[0051] Evaporator coils: These provide a passage for refrigerant flow and facilitate heat exchange with the air.

[0052] Filter: Used to filter dust and impurities from the air.

[0053] Currently, cleaning dehumidifiers typically involves disassembling the dehumidifier and manually cleaning the fins and other components, or using chemical cleaners to spray or soak the evaporator surface to remove dirt and bacteria buildup.

[0054] However, manual disassembly and cleaning is cumbersome, and the gaps between the fins are narrow, making it difficult to clean them thoroughly. Chemical cleaning may also corrode the materials and is costly.

[0055] To address the aforementioned issues, this application provides a self-cleaning method for a dehumidifier. This method achieves active frosting and efficient defrosting of the evaporator surface through intelligent control of the compressor and fan, thereby effectively cleaning the evaporator surface. Specifically, when the dehumidifier activates the self-cleaning mode, the compressor operates at a constant power, lowering the temperature of the evaporator surface. Moisture in the air condenses into frost on the evaporator surface. This frosting process captures tiny particles such as dust, dirt, and bacteria on the evaporator surface, as these particles are encased in the frost layer by moisture. Furthermore, after frost has formed on the evaporator surface, the compressor is turned off, the evaporator stops cooling, and the frost on the evaporator surface begins to melt. During the defrosting process, the fan speed is increased, which accelerates airflow, promotes the melting of frost and the evaporation of moisture. The melted water carries away the encased dust and bacteria particles, thus achieving the effect of cleaning the evaporator surface.

[0056] In this way, the natural process of frosting and defrosting avoids the tedious steps of manual disassembly and cleaning, as well as the material corrosion problems that may be caused by chemical cleaning. Furthermore, this self-cleaning method utilizes the dehumidifier's own function to achieve self-cleaning, reducing additional cleaning costs. In addition, increasing the fan speed during the defrosting process can accelerate the melting of frost and the evaporation of moisture, thereby improving cleaning efficiency.

[0057] For example, Figure 1 This is a schematic diagram illustrating an application scenario of a dehumidifier provided in an embodiment of this application, such as... Figure 1 As shown, taking a home scenario as an example, this application scenario includes a dehumidifier 100 and a television 200. In the living room, if the user wants to clean the dehumidifier 100, they can turn on the self-cleaning mode of the dehumidifier 100 to enable the dehumidifier 100 to self-clean. This self-cleaning mode is based on the refrigeration cycle principle of the dehumidifier 100. By controlling the operating status of the compressor and fan, the frost formation and defrosting process on the evaporator surface is realized to achieve the cleaning effect.

[0058] It should be noted that the dehumidifier 100 can also be applied to other application scenarios, such as shopping malls, schools, and offices. This application embodiment does not limit the specific application scenario; the above is only an example.

[0059] Based on the above application scenarios, the structure of a dehumidifier is as follows: Figure 2 As shown, Figure 2 This is a schematic diagram of the structure of a dehumidifier provided in an embodiment of this application, as shown below. Figure 2 As shown, the dehumidifier includes a compressor 101, a fan 102, an evaporator 103, a condenser 104, a water pump 105, and a filter 106.

[0060] During the dehumidification process, the fan 102 draws humid air into the dehumidifier. The humid air typically passes through the filter 106 to remove dust and impurities, protecting the internal components. Further, the drawn-in air passes through the evaporator 103, where the refrigerant absorbs heat from the air, lowering the air temperature. As the air temperature decreases, water vapor in the air condenses into water droplets and flows along the fins of the evaporator 103, flowing into the water tank via the water pump 105. Simultaneously, the cooled air continues to flow through the condenser 104, which releases heat to reheat the air, restoring its temperature to near room temperature. Finally, the treated dry air is discharged from the dehumidifier by the fan 102 and re-enters the indoor environment. During the dehumidification process described above, the fan 102 operates at a third rotational speed.

[0061] During the self-cleaning process of the dehumidifier, the compressor 101 operates at a constant power, which lowers the temperature of the evaporator 103 surface. Water vapor in the air condenses into frost on the evaporator 103 surface. The frost layer can capture tiny particles such as dust, dirt, and bacteria. After the frost layer on the evaporator 103 surface is completed, the compressor 101 is turned off, stopping further refrigerant circulation and cooling. During the defrosting process, the fan 102 speed is increased to a higher level than the speed during the frosting process. Increasing the fan speed helps to accelerate airflow, thereby melting the frost layer on the evaporator surface more quickly. During the defrosting process, the water pump 105 may be started to allow the water generated during defrosting to flow into the water tank. During the frosting process, the fan 102 operates at a first speed suitable for the frosting conditions, or is in a stopped state to reduce the amount of airflow. The third speed is greater than the first speed.

[0062] It should be noted that the refrigerant cycle includes: the compressor 101 compresses the refrigerant and sends it into the condenser 104. The refrigerant releases heat and turns into a liquid in the condenser 104. The liquid refrigerant enters the evaporator 103 after passing through the expansion valve. In the evaporator 103, it absorbs heat and vaporizes, causing the temperature of the surface of the evaporator 103 to drop rapidly.

[0063] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0064] Figure 3 This is a schematic flowchart illustrating a self-cleaning method for a dehumidifier provided in an embodiment of this application. Figure 3 As shown, the self-cleaning method of this dehumidifier is applied to... Figure 2 The dehumidifier shown has at least a self-cleaning mode, and the self-cleaning method of the dehumidifier includes the following steps:

[0065] S301. When the dehumidifier starts the self-cleaning mode, the compressor is controlled to run continuously at a constant power, so that the surface of the evaporator is frosted.

[0066] In this application, the compressor is set to operate at a constant power, which means that the compressor will work at a stable speed and power and will not adjust its output due to changes in external conditions.

[0067] In this step, when the dehumidifier is in self-cleaning mode, the compressor operates at a constant power, and the dehumidifier circulates refrigerant, which lowers the temperature of the evaporator surface. As a result, water vapor in the air condenses on the evaporator surface and then freezes into frost. This frosting process not only lowers the temperature of the evaporator surface but also captures tiny particles such as dust, dirt, and bacteria in the air. These particles are encased in the frost layer by the moisture.

[0068] S302. After frost forms on the surface of the evaporator, the compressor is controlled to be turned off, and the fan speed is adjusted to defrost the surface of the evaporator.

[0069] The fan speed during the defrosting process on the evaporator surface is greater than the fan speed during the frosting process on the evaporator surface.

[0070] After frost has formed on the evaporator surface, the compressor is shut off to stop refrigerant circulation. As a result, the evaporator stops cooling, and the temperature on the evaporator surface begins to rise, causing the frost to melt. Correspondingly, during the defrosting process, the fan speed is increased. Compared to the fan speed during frost formation, the fan speed during defrosting is higher to accelerate airflow and promote the rapid melting and evaporation of the frost on the evaporator surface. The melted water, as it flows, carries away particles such as dust, dirt, and bacteria trapped in the frost, thus achieving self-cleaning of the evaporator surface.

[0071] In one possible implementation, after the dehumidifier self-cleaning process is completed, the dehumidifier can automatically return to the normal dehumidification mode or stop working. In this application embodiment, the state of the dehumidifier after the self-cleaning process is completed is not specifically limited, and it can be determined based on the state of the dehumidifier before the self-cleaning mode is started.

[0072] Therefore, in self-cleaning mode, the compressor operates at a constant power, ensuring that it works at a stable speed and power to provide consistent cooling. This helps to quickly reduce the temperature of the evaporator surface, effectively forming a frost layer. This frost layer not only lowers the temperature of the evaporator surface but also captures tiny particles such as dust, dirt, and bacteria in the air, ensuring that dirt is effectively encased in the frost. Furthermore, during the defrosting process, the compressor is turned off to stop refrigerant circulation, causing the temperature of the evaporator surface to rise again, the frost layer to begin to melt, and the fan speed is increased compared to the speed during the frosting process, accelerating airflow, promoting rapid melting of frost and evaporation of moisture, and improving cleaning efficiency. The melted water carries the dust, dirt, and bacteria particles encased in the frost layer out of the evaporator, thus effectively achieving self-cleaning. This avoids the tedious steps of manual disassembly and cleaning, as well as the material corrosion problems that may be caused by chemical cleaning, extending the service life of the dehumidifier.

[0073] In addition, the self-cleaning process described above utilizes the dehumidifier's own functions to achieve self-cleaning, which also reduces additional cleaning costs.

[0074] In some embodiments, the fan is in a closed state during the frosting process on the evaporator surface;

[0075] Alternatively, the method may further include:

[0076] During the frosting process on the evaporator surface, the fan speed is reduced.

[0077] During the frosting process on the evaporator surface, the fan is turned off. At this time, without the fan driving airflow, the temperature of the evaporator surface can drop more quickly, thus accelerating the frosting process.

[0078] In addition, the fan is off during the frosting process on the evaporator surface, which can reduce energy consumption and reduce interference with the formation of the frost layer, thus helping to form a more uniform frost layer.

[0079] For example, during the frosting process on the evaporator surface, the fan can operate at a lower speed or be turned off, for example, by reducing the DC fan speed to 20%-40% of a preset range or stopping it to reduce airflow. The preset range is the maximum speed of the DC fan.

[0080] Understandably, reducing the fan speed can ensure that the evaporator surface temperature is low enough to form a frost layer while maintaining a certain amount of airflow. In addition, moderate airflow can also help prevent localized overcooling of the evaporator surface, thereby avoiding potential icing problems.

[0081] In addition, reducing the fan speed so that the fan does not stop can maintain a certain dehumidification effect.

[0082] Therefore, during the frosting process on the evaporator surface, the fan speed can be flexibly adjusted to optimize the self-cleaning effect and suit different environmental conditions.

[0083] In some embodiments, the dehumidifier further includes an exhaust pipe, and the method further includes:

[0084] During the frosting process on the evaporator surface, the fan speed is positively correlated with the temperature of the exhaust pipe.

[0085] During the frosting process on the evaporator surface, the fan speed is adjusted according to the temperature of the exhaust pipe. Specifically, the fan speed is positively correlated with the exhaust pipe temperature. When the exhaust pipe temperature rises, the fan speed can be increased. For example, when the exhaust pipe temperature increases to near a certain temperature threshold, the fan speed is increased to 25%-30% of the preset range to balance the cooling effect and compressor safety. When the exhaust pipe temperature decreases, the fan speed is reduced or kept constant.

[0086] In this way, by adjusting the fan speed in response to changes in the exhaust pipe temperature, the temperature conditions on the evaporator surface can be better controlled, thereby optimizing the frosting process. In particular, increasing the fan speed can accelerate airflow, helping to remove excess heat and ensuring that the evaporator surface temperature is low enough to form a frost layer. Therefore, precisely controlling the relationship between fan speed and exhaust pipe temperature helps maintain suitable operating conditions inside the dehumidifier, preventing overheating or overcooling, reducing maintenance needs, and also helps to improve the flexibility and adaptability of the self-cleaning process. In addition, by controlling the linkage between fan speed and exhaust pipe temperature, the fan speed is increased only when necessary, thereby reducing unnecessary energy consumption.

[0087] In some embodiments, the dehumidifier further includes a temperature sensor, the exhaust pipe is connected to the compressor, and the temperature sensor is used to detect a first temperature of the exhaust pipe; during the frosting process on the evaporator surface, the fan speed is positively correlated with the temperature of the exhaust pipe, including:

[0088] During the frosting process on the evaporator surface, the target speed of the fan is determined based on the first temperature detected by the temperature sensor, and the fan is controlled to operate at the target speed; the target speed is positively correlated with the first temperature.

[0089] In one possible implementation, at least part of the temperature sensor is installed on the exhaust pipe connected to the compressor to detect a first temperature of the exhaust pipe in real time, which reflects the operating status of the compressor and the heat level inside the dehumidifier.

[0090] In this step, during the frosting process on the evaporator surface, the target speed of the fan is determined based on the first temperature detected by the temperature sensor, and the actual speed of the fan is adjusted according to the determined target speed to reach and maintain the target speed, so as to ensure that the operating state of the fan matches the current heat conditions. The target speed is positively correlated with the first temperature, that is, when the exhaust pipe temperature rises, the target speed increases; when the exhaust pipe temperature falls, the target speed decreases or remains unchanged.

[0091] Therefore, this application allows for dynamic adjustment of the fan's energy consumption based on the detected first temperature, optimizing the fan's operating efficiency according to actual needs. This method enables the dehumidifier to better adapt to different environmental conditions. By adjusting the interaction between the fan and the exhaust pipe, the flexibility and adaptability of the self-cleaning process are improved. In addition, precise control of the relationship between the fan speed and the first temperature can prevent overheating or overcooling, helping to extend the service life of the dehumidifier and reduce maintenance needs.

[0092] In some embodiments, during the frosting process on the evaporator surface, the fan operates at a first speed suitable for the frosting conditions; determining the target speed of the fan based on the first temperature detected by the temperature sensor, and controlling the fan to operate at the target speed, includes:

[0093] When the first temperature is determined to be greater than or equal to a preset temperature threshold, the first rotational speed of the fan is increased; the preset temperature threshold is less than a safe temperature threshold.

[0094] Alternatively, when it is determined that the first temperature is less than the preset temperature threshold, the fan is controlled to continue to maintain the first rotational speed.

[0095] In this embodiment of the application, during the frosting process on the evaporator surface, the fan initially operates at a first speed suitable for the frosting conditions. This first speed is preset according to the internal parameters of the dehumidifier and the environmental conditions to optimize the frosting efficiency. This embodiment of the application does not limit the specific value of the first speed.

[0096] It should be noted that the preset temperature threshold is set to be lower than the safe temperature threshold to ensure that the dehumidifier still operates within a safe temperature range even when the fan speed is adjusted, thus preventing shutdown. The specific value of the preset temperature threshold is not limited in this embodiment; it can be set based on the size of the safe temperature threshold. For example, the preset temperature threshold is a value that is close to the safe temperature threshold, which can be 85°C.

[0097] In this step, when the first temperature is detected to be greater than or equal to the preset temperature threshold, the first speed of the fan is increased to increase airflow, help remove excess heat, prevent the evaporator from overheating, and ensure the frosting process continues. When the first temperature is detected to be less than the preset temperature threshold, the fan is controlled to continue to maintain the first speed, because the current conditions are already suitable for frosting and no additional adjustment is required.

[0098] In this way, by judging the first temperature and the preset temperature threshold, the fan speed can be increased only when necessary, which can effectively manage energy consumption and avoid unnecessary energy waste. Furthermore, by setting the preset temperature threshold and the safety temperature threshold, it can be ensured that the dehumidifier operates within a safe temperature range, preventing overheating or other potential safety problems. Moreover, by dynamically adjusting the fan speed, the temperature conditions on the evaporator surface can be better controlled, thereby optimizing the frosting process and ensuring the effective formation of the frost layer.

[0099] It should be noted that if the first temperature exceeds the safe temperature threshold, there is a risk of the machine shutting down. Therefore, during the self-cleaning process of the dehumidifier, it is necessary to ensure that the first temperature does not exceed the safe temperature threshold to ensure the safe operation of the dehumidifier and reduce the risk of overheating.

[0100] In some embodiments, the dehumidifier further includes a temperature sensor for detecting a second temperature of the coil in the evaporator; controlling the compressor to operate continuously at a constant power to cause frost to form on the surface of the evaporator includes:

[0101] The compressor is controlled to run at a constant power for a first duration until the second temperature detected by the temperature sensor is lower than the preset frosting temperature, and the duration for which the second temperature is lower than the preset frosting threshold is greater than the preset frosting duration, so that the surface of the evaporator is frosted.

[0102] The first duration refers to the time period during which the compressor operates at a constant power.

[0103] In this embodiment of the application, ensuring that the duration of the second temperature being less than the preset frosting threshold is greater than the preset frosting duration means that after the required low temperature condition is reached, the state must be maintained for a sufficiently long time to ensure the effective formation of the frost layer.

[0104] In one possible implementation, some temperature sensors are installed on the evaporator coils to detect a second temperature of the coils in real time, which can reflect the cooling status and frosting conditions of the evaporator.

[0105] In this step, the second temperature of the coil in the evaporator is monitored in real time until it is lower than the preset frosting temperature and the duration is longer than the preset frosting duration. As a result, a stable frost layer is formed on the surface of the evaporator, capturing dust and dirt on the surface of the evaporator. For example, if the second temperature of the coil in the evaporator is detected to drop to -3°C to 0°C and the duration is longer than the preset frosting duration, then the frost layer is confirmed to have formed on the surface of the evaporator.

[0106] It should be noted that the embodiments of this application do not specifically limit the values ​​of the preset frosting temperature and preset frosting duration. They can be set based on the internal parameters of the dehumidifier and environmental parameters. The preset frosting temperature and preset frosting duration can be in the form of a numerical range or a single numerical value.

[0107] Therefore, this application can precisely control the compressor's operating time by monitoring the second temperature of the evaporator coil in real time until the frosting conditions are met, ensuring the effectiveness of the frosting process. By ensuring that frosting occurs under appropriate temperature and time conditions, it helps to form a uniform and effective frost layer, improving the self-cleaning effect. In addition, by setting clear temperature and time thresholds, unnecessary compressor operation can be avoided, energy consumption can be optimized, and operating costs can be reduced.

[0108] In some embodiments, the dehumidifier further includes a temperature sensor for detecting a second temperature of the coil in the evaporator; adjusting the fan speed to defrost the evaporator surface includes:

[0109] The fan is controlled to run at a second speed for a second duration until the second temperature detected by the temperature sensor reaches the preset defrosting temperature, so that the surface of the evaporator defrosts.

[0110] In this embodiment of the application, the second temperature can also be used to determine whether the frost layer on the surface of the evaporator has melted, and the second duration refers to the time period during which the fan runs at the second speed.

[0111] During the defrosting process, the fan is controlled to run at a second speed, which is preset and usually higher than the speed during the frosting process, in order to increase airflow, accelerate the melting of the frost, and optimize defrosting efficiency. Furthermore, the fan continues to run at the second speed until the second temperature detected by the temperature sensor reaches the preset defrosting temperature, indicating that the frost has melted and the evaporator surface has returned to normal temperature. At this point, the defrosting process is complete.

[0112] It should be noted that the embodiments of this application do not specifically limit the value of the preset defrost temperature. It can be set based on the internal parameters of the dehumidifier and the environmental parameters. The preset defrost temperature can be in the form of a numerical range or a single numerical value. For example, the preset defrost temperature can be 5°C.

[0113] In this way, by monitoring the second temperature of the evaporator coil in real time, this application can accurately control the operating time and speed of the fan, ensuring the high efficiency of the defrosting process. By ensuring that defrosting is carried out under appropriate temperature and time conditions, it helps to keep the evaporator clean and improve the overall performance of the dehumidifier. In addition, by setting a clear temperature threshold, unnecessary fan operation can be avoided, energy consumption can be optimized, and operating costs can be reduced.

[0114] In some embodiments, the second rotational speed is the maximum rotational speed of the fan.

[0115] During defrosting, the fan is set to operate at its maximum speed, meaning the fan rotates at the highest speed allowed by its design to provide maximum airflow.

[0116] For example, during the defrosting process, the fan runs at maximum speed until the second temperature detected by the temperature sensor reaches the preset defrosting temperature, indicating that the frost layer has melted, thus completing the self-cleaning process.

[0117] Therefore, keeping the motor at maximum speed provides the strongest airflow, quickly removing the cold air from the evaporator surface and accelerating the melting of frost. This shortens the defrosting time. Combined with the compressor stopping, frost and dirt can be removed, improving the overall cleaning efficiency of the dehumidifier. In addition, setting the fan speed to maximum utilizes strong airflow and natural heating to melt the frost, reducing the possibility of localized frost or ice residue, ensuring the evaporator surface is completely clean. Furthermore, rapid defrosting can reduce potential damage to the evaporator from frost, such as mechanical stress or corrosion problems that may result from excessive accumulation.

[0118] Understandably, by defrosting quickly and effectively, dehumidifiers can return to normal dehumidification operation or other working states more quickly, thus improving their efficiency and performance.

[0119] In some embodiments, the dehumidifier further has a dehumidification mode, and when the dehumidifier is in the dehumidification mode, the fan has a third speed, which is greater than the speed of the fan during the frosting process on the evaporator surface.

[0120] like Figure 2 As shown, when the dehumidifier is running in dehumidification mode, the fan operates at the third speed. This third speed is set to optimize airflow and dehumidification efficiency. Since the frosting process usually requires a lower fan speed in order to quickly reduce the temperature of the evaporator surface and effectively frost, the third speed is greater than the fan speed during the frosting process on the evaporator surface.

[0121] It should be noted that in dehumidification mode, a higher fan speed helps to circulate indoor air more quickly and remove moisture from the air more effectively through the evaporator.

[0122] Therefore, this application can adjust the fan speed in different modes, enabling the dehumidifier to better adapt to different environmental conditions and needs. Whether it is rapid dehumidification or efficient frosting, in dehumidification mode, the higher fan speed increases the airflow speed, allowing more air to pass through the evaporator and improving the contact efficiency between the air and the cooling surface, thereby enhancing the condensation and removal of moisture. In self-cleaning mode, the fan speed is controlled to be lower than that in dehumidification mode, which can reduce the airflow and make the temperature of the evaporator surface drop faster, thereby accelerating the frosting process.

[0123] In some embodiments, the method further includes:

[0124] The operating time of the fan during the frosting process on the evaporator surface is determined based on the ambient temperature and / or ambient relative humidity.

[0125] In this embodiment, the dehumidifier can be equipped with sensors to monitor ambient temperature and relative humidity in real time. At higher ambient temperatures, the time required for the evaporator coil temperature to drop to the preset frosting temperature is longer, and correspondingly, the time required for the fan to frost on the evaporator surface is longer. At higher ambient relative humidity, the water vapor content in the air is higher, so the frosting speed is faster, and correspondingly, the time required for the fan to frost on the evaporator surface is shorter. Therefore, the running time of the fan frosting process on the evaporator surface can be determined based on ambient temperature and / or ambient relative humidity.

[0126] The relationship between the water vapor content in the air and the frosting rate can be determined according to a preset algorithm or model. For example, the frosting formula is dh / dt∝(ρv-ρs), where ρv is the air water vapor density, ρs is the saturated water vapor density, and dh / dt is the rate at which the frost layer thickness (h) changes with time (t). The difference between the air water vapor density and the saturated water vapor density is positively correlated with the frosting rate. Therefore, the higher the water vapor content in the air, the faster the frosting rate.

[0127] In this way, the operating time of the fan can be dynamically adjusted based on environmental conditions to better adapt to different environmental conditions, ensure the formation of an effective frost layer on the evaporator surface, improve frost formation efficiency, and prevent excessive or insufficient frost formation, thus avoiding unnecessary energy consumption, optimizing overall energy use, and improving the performance and reliability of the dehumidifier.

[0128] In one possible implementation of this application, the ambient temperature is positively correlated with the operating time of the fan during the frosting process on the evaporator surface;

[0129] And / or, the relative humidity of the environment is negatively correlated with the operating time of the fan during the frosting process on the evaporator surface.

[0130] In this embodiment, when the ambient temperature rises, the evaporator needs more time to reach a sufficiently low temperature to form a frost layer. Therefore, the operating time of the fan needs to be extended to ensure that the evaporator surface can be effectively frosted. Conversely, when the ambient temperature is low, the evaporator can more easily reach the low temperature required for frosting, and the operating time of the fan can be shortened.

[0131] When the relative humidity of the environment is high, the moisture content in the air is higher, and the evaporator is more likely to form a frost layer. Therefore, the operating time of the fan can be shortened. Conversely, when the relative humidity of the environment is low, the moisture content in the air is lower, and the evaporator needs more time to accumulate enough moisture to form a frost layer. Therefore, the operating time of the fan needs to be extended.

[0132] For example, taking a maximum fan speed of 3000 RPM as an example, the initial temperature of the evaporator coil, T_coil, is 15℃, and the initial temperature of the exhaust pipe, T_exhaust, is 40℃. Under standard conditions, i.e., an ambient temperature of 15℃ and an ambient relative humidity of 70%, the self-cleaning process of the dehumidifier includes: reducing the fan speed to 900 RPM, with the compressor running continuously. After the fan runs for 6 minutes, T_coil drops to -2℃, the frost layer thickness is about 0.8mm, and T_exhaust rises to 78℃. At this point, the frost formation process on the evaporator surface is completed. Further, the compressor is turned off, the fan speed is adjusted to 3000 RPM, and after the fan runs for 3 minutes, T_coil rises back to 5℃, and the frost layer completely melts. At this point, the defrosting process on the evaporator surface is completed, and the evaporator surface achieves self-cleaning.

[0133] In a low-temperature environment, specifically an ambient temperature of 5°C and a relative humidity of 70%, the dehumidifier's self-cleaning process includes: reducing the fan speed to 600 RPM while the compressor continues to run. After the fan runs for 8 minutes, T_coil drops to -3°C, the frost layer is approximately 1 mm thick, and T_exhaust rises to 80°C. If T_exhaust continues to rise above 82°C, exceeding the preset temperature threshold, the fan speed needs to be fine-tuned to 750 RPM until the frost formation process on the evaporator surface is complete. Further, the compressor is turned off, the fan speed is adjusted to 3000 RPM, and after the fan runs for 4 minutes, T_coil rises back to 5°C, and the frost layer completely melts. At this point, the defrosting process on the evaporator surface is complete, and the evaporator surface achieves self-cleaning.

[0134] In a high-temperature environment, specifically an ambient temperature of 30℃ and a relative humidity of 50%, the dehumidifier's self-cleaning process includes: reducing the fan speed to 1200 RPM while the compressor continues to run. After the fan runs for 15 minutes, T_coil drops to 0℃, the frost layer thickness is approximately 0.5mm, and T_exhaust rises to 75℃. At this point, the frost formation process on the evaporator surface is complete. Next, the compressor is turned off, the fan speed is adjusted to 3000 RPM, and after the fan runs for 2 minutes, T_coil rises back to 6℃, and the frost layer completely melts. At this point, the defrosting process on the evaporator surface is complete, and the evaporator surface achieves self-cleaning.

[0135] It should be noted that T_coil is set to a temperature between -3℃ and 0℃, which is the preset frosting temperature. The frosting thickness is between 0.5mm and 1mm, which meets the frosting conditions.

[0136] The above examples show that this application can adapt to environments ranging from 5℃ to 30℃, and can still operate effectively, especially under low temperature and high humidity conditions. By dynamically adjusting the operating time of the fan according to the ambient temperature and humidity, it can ensure the formation of an effective frost layer on the evaporator surface and improve the frosting efficiency.

[0137] At higher ambient temperatures, the water vapor content in the air is usually lower, which may slow down the frosting process. Therefore, extending the fan running time can prevent premature frosting and ensure that the evaporator surface remains clean. At higher relative humidity, the water vapor content in the air is higher, and the frosting process is faster. Therefore, shortening the fan running time can reduce the formation of frost and thus reduce the need for defrosting. In this way, this application enables the dehumidifier to better adapt to changing environmental conditions by adjusting the fan running time in real time according to the ambient temperature and relative humidity, thereby improving the flexibility and adaptability of the dehumidifier.

[0138] In addition, by precisely controlling the operating time of the fan, it is helpful to prevent excessive or insufficient frost formation and avoid unnecessary energy consumption. Especially in conditions where frost formation is not easy, such as high temperature and low humidity environments, controlling the operating time of the fan can significantly save energy and thus optimize overall energy use.

[0139] In some embodiments, during the defrosting process on the evaporator surface, the rotation direction of the fan is adjusted to reverse its direction.

[0140] In this embodiment, the airflow generated by the fan running in reverse can help accelerate the melting or blowing away of frost on the evaporator surface. By changing the direction of the airflow, warm air can more effectively contact the frosted area on the evaporator surface, accelerating the melting of the frost.

[0141] For example, such as Figure 2As shown, the condenser 104 is located near the fan 102 at the air outlet. Under normal circumstances, the fan 102 blows air across the condenser 104 to exhaust hot air from the air outlet. However, when the dehumidifier is self-cleaning, during the defrosting process on the surface of the evaporator 103, the fan 102 can be controlled to change its rotation direction to blow hot air from the condenser 104 to the evaporator 103, so that the hot air directly contacts the surface of the evaporator 103, providing additional heat and accelerating the defrosting process.

[0142] Therefore, by controlling the fan to run in reverse during the defrosting process on the evaporator surface, hot air can be guided to the evaporator surface, which can melt the frost layer more quickly, improve defrosting efficiency, and utilize the waste heat generated by the condenser for defrosting, which can save energy while accelerating the defrosting process.

[0143] In some embodiments, the dehumidifier further includes a current sensor for detecting current data of the compressor, and the method further includes:

[0144] During the frosting process on the evaporator surface, if the compressor is determined to be in an abnormal state based on the current data detected by the current sensor, a first prompt message is generated.

[0145] Abnormal states may include compressor overload, short circuit, start-up failure, shutdown or other malfunctions. The abnormal states in this application embodiment are not specifically limited.

[0146] In this embodiment of the application, a current sensor is installed in the compressor circuit to detect the compressor current data in real time in order to determine the compressor's working status. Under normal circumstances, the compressor current should fluctuate within a preset range, for example, between 80% and 100% of the rated current.

[0147] In this step, by continuously monitoring the data provided by the current sensor, if the current data is detected to be outside the normal range, it indicates that the compressor may be in an abnormal state. At this time, a first prompt message can be generated. The first prompt message can notify the user through a display screen, indicator light or other means. The first prompt message may include the fault type, suggested inspection steps or suggestions to contact maintenance services, etc. This application embodiment does not specifically limit the display content and sending form of the first prompt message. The above is only an example.

[0148] Therefore, by monitoring the compressor's current data in real time, potential faults can be quickly detected and responded to, reducing the risk of dehumidifier damage or safety accidents. Furthermore, the initial alert information can help users take measures to check and maintain the unit before the problem becomes serious, thereby reducing dehumidifier downtime and maintenance costs.

[0149] Understandably, timely detection and handling of abnormal conditions also helps reduce excessive wear and tear on the compressor and other components, extending the dehumidifier's lifespan.

[0150] In some embodiments, the dehumidifier further includes a power monitoring module for monitoring the power of the compressor, and the method further includes:

[0151] During the process of frost forming on the evaporator surface, if the power monitored by the power monitoring module determines that the compressor is in an abnormal state, a second prompt message is generated.

[0152] In this embodiment, the power monitoring module is installed in the compressor circuit to monitor the compressor's power consumption in real time in order to determine the compressor's working status. Under normal circumstances, the compressor's power consumption should fluctuate within a preset range to reflect its normal working status.

[0153] In this step, by continuously monitoring the data provided by the power monitoring module, if the power consumption is detected to be outside the normal range, it indicates that the compressor may be in an abnormal state, such as compressor overload, efficiency reduction, shutdown, mechanical failure, or other problems. In this case, a second prompt message can be generated. It should be noted that the definition of the second prompt message is similar to that of the first prompt message. The corresponding display content and sending format can be referred to the description of the first prompt message, which will not be repeated here.

[0154] Therefore, by monitoring the compressor's power consumption in real time, potential faults can be quickly detected and responded to, reducing the risk of dehumidifier damage or safety accidents. Furthermore, the second alert information can help users take steps to inspect and maintain the unit before the problem becomes serious, thereby reducing dehumidifier downtime and maintenance costs.

[0155] In some embodiments, the dehumidifier further includes a current sensor for detecting current data of the compressor, and the method further includes:

[0156] After controlling the compressor to be in the off state, the system determines whether the compressor is in the off state based on the current data detected by the current sensor.

[0157] During normal operation, when the compressor is turned off, the current sensor should detect that the current has dropped to zero or near zero.

[0158] After the dehumidifier controls the compressor to be off, the current sensor continues to monitor the current data. If the current data is zero or close to zero, it confirms that the compressor has been successfully shut down. If the current data is still non-zero, it may indicate that the compressor has not shut down properly, which may be due to a circuit fault or control problem.

[0159] It should be noted that if the compressor fails to shut down successfully, a prompt message can be generated to notify the user, or the compressor can be turned off again. This application embodiment does not specifically limit the handling measures after the compressor fails to shut down successfully.

[0160] In this way, by timely detecting current data to verify the compressor's shutdown status, potential damage and performance degradation of the dehumidifier can be prevented, thus improving the dehumidifier's reliability.

[0161] In some embodiments, the dehumidifier further includes a power monitoring module for monitoring the power of the compressor, and the method further includes:

[0162] After controlling the compressor to be in the off state, the power monitored by the power monitoring module is used to determine whether the compressor is in the off state.

[0163] During normal operation, when the compressor is turned off, the power monitoring module should detect that the power has dropped to zero or near zero.

[0164] After the dehumidifier controls the compressor to be off, the power monitoring module continues to monitor the power data. If the power data shows zero or close to zero, it confirms that the compressor has been successfully shut down. If the power data still shows non-zero, it may indicate that the compressor has not shut down correctly, which may be due to a circuit fault or control problem.

[0165] In this way, by timely detecting power data to verify whether the compressor is in a shut-off state, potential damage and performance degradation of the dehumidifier can be prevented, thus improving the reliability of the dehumidifier.

[0166] In the foregoing embodiments, the self-cleaning method of the dehumidifier provided in this application has been described. To achieve the functions of the methods provided in the embodiments of this application, the dehumidifier, as the executing entity, may include hardware structures and / or software modules, implementing the above functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. Whether a particular function is executed in the form of hardware structures, software modules, or a combination of hardware structures and software modules depends on the specific application and design constraints of the technical solution.

[0167] For example, Figure 4 This is a schematic diagram of the structure of a self-cleaning device for a dehumidifier provided in an embodiment of this application. The dehumidifier includes a compressor, a fan, and an evaporator; the dehumidifier has at least a self-cleaning mode, such as... Figure 4 As shown, the self-cleaning device 400 of the dehumidifier includes:

[0168] The first control module 401 is used to control the compressor to run continuously at a constant power when the dehumidifier starts the self-cleaning mode, so that the surface of the evaporator is frosted.

[0169] The second control module 402 is used to control the compressor to be shut down and adjust the fan speed after frost forms on the evaporator surface, so that the evaporator surface defrosts.

[0170] The fan speed during the defrosting process on the evaporator surface is greater than the fan speed during the frosting process on the evaporator surface.

[0171] As one possible implementation of this application, the fan is in a closed state during the frosting process on the evaporator surface;

[0172] Alternatively, the self-cleaning device 400 of the dehumidifier may further include a speed-reducing module, the speed-reducing module being used for:

[0173] During the frosting process on the evaporator surface, the fan speed is reduced.

[0174] As one possible implementation of this application, the dehumidifier further includes an exhaust pipe, and the self-cleaning device 400 of the dehumidifier further includes a third control module, the third control module being used for:

[0175] During the frosting process on the evaporator surface, the fan speed is positively correlated with the temperature of the exhaust pipe.

[0176] As one possible implementation of this application, the dehumidifier further includes a temperature sensor, the exhaust pipe is connected to the compressor, and the temperature sensor is used to detect a first temperature of the exhaust pipe; the third control module is specifically used for:

[0177] During the frosting process on the evaporator surface, the target speed of the fan is determined based on the first temperature detected by the temperature sensor, and the fan is controlled to operate at the target speed; the target speed is positively correlated with the first temperature.

[0178] As one possible implementation of this application, during the frosting process on the evaporator surface, the fan operates at a first rotational speed suitable for the frosting conditions; the third control module is specifically used for:

[0179] When the first temperature is determined to be greater than or equal to a preset temperature threshold, the first rotational speed of the fan is increased; the preset temperature threshold is less than a safe temperature threshold.

[0180] Alternatively, when it is determined that the first temperature is less than the preset temperature threshold, the fan is controlled to continue to maintain the first rotational speed.

[0181] As one possible implementation of this application, the dehumidifier further includes a temperature sensor for detecting a second temperature of the coil in the evaporator; the first control module is specifically used for:

[0182] The compressor is controlled to run at a constant power for a first duration until the second temperature detected by the temperature sensor is lower than the preset frosting temperature, and the duration for which the second temperature is lower than the preset frosting threshold is greater than the preset frosting duration, so that the surface of the evaporator is frosted.

[0183] As one possible implementation of this application, the dehumidifier further includes a temperature sensor for detecting a second temperature of the coil in the evaporator; the second control module is specifically used for:

[0184] The fan is controlled to run at a second speed for a second duration until the second temperature detected by the temperature sensor reaches the preset defrosting temperature, so that the surface of the evaporator defrosts.

[0185] As one possible implementation of this application, the second rotational speed is the maximum rotational speed of the fan.

[0186] As one possible implementation of this application, the dehumidifier also has a dehumidification mode. When the dehumidifier is in the dehumidification mode, the fan has a third speed, which is greater than the speed of the fan during the frosting process on the evaporator surface.

[0187] As one possible implementation of this application, the self-cleaning device 400 of the dehumidifier further includes a determining module, the determining module being used for:

[0188] The operating time of the fan during the frosting process on the evaporator surface is determined based on the ambient temperature and / or ambient relative humidity.

[0189] As one possible implementation of this application, the ambient temperature is positively correlated with the operating time of the fan during the frosting process on the evaporator surface;

[0190] And / or, the relative humidity of the environment is negatively correlated with the operating time of the fan during the frosting process on the evaporator surface.

[0191] As one possible implementation of this application, the self-cleaning device 400 of the dehumidifier further includes an adjustment module, the adjustment module being used for:

[0192] During the defrosting process on the evaporator surface, the rotation direction of the fan is adjusted to reverse its direction.

[0193] It should be noted that the specific implementation principle and effect of the self-cleaning device of the above dehumidifier can be found in the relevant description and effect of the above embodiments, and will not be elaborated further here.

[0194] For example, embodiments of this application also provide an electronic device, Figure 5 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application, such as... Figure 5 As shown, the electronic device 500 includes: a controller 501, and a memory 502 communicatively connected to the controller 501;

[0195] The memory 502 stores computer-executed instructions;

[0196] The controller 501 executes computer execution instructions stored in the memory 502 to implement the method as described in any of the above embodiments.

[0197] The memory 502 can be either independent or integrated with the controller 501.

[0198] In addition, the memory 502 and the controller 501 can be connected via the bus 503.

[0199] The implementation principle and technical effects of the electronic device provided in this embodiment can be found in the foregoing embodiments, and will not be repeated here.

[0200] This application also provides a dehumidifier. Figure 6 This is a partial structural diagram of a dehumidifier provided in an embodiment of this application, as shown below. Figure 6 As shown, the dehumidifier 100 includes a compressor 101, a fan 102, an evaporator 103, and a controller 501, which is used to perform the method as described in any of the above embodiments.

[0201] In this embodiment, the controller 501 is used to receive data from various sensors and perform speed and on / off control, such as increasing the fan speed and shutting down the compressor. This embodiment does not specifically limit the control function of the controller 501.

[0202] It should be noted that the implementation principle and technical effects of the dehumidifier provided in this embodiment can be found in the relevant descriptions of the above embodiments, and will not be repeated here.

[0203] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the method described in any of the foregoing embodiments.

[0204] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the methods described in any of the foregoing embodiments.

[0205] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or modules may be electrical, mechanical, or other forms.

[0206] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to implement the solution of this embodiment according to actual needs.

[0207] Furthermore, the functional modules in the various embodiments of this application can be integrated into one processing unit, or each module can exist physically separately, or two or more modules can be integrated into one unit. The aforementioned modular unit can be implemented in hardware or in a combination of hardware and software functional units.

[0208] The integrated modules implemented as software functional modules described above can be stored in a computer-readable storage medium. These software functional modules, stored in a storage medium, include several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute some steps of the methods described in the various embodiments of this application.

[0209] It should be understood that the aforementioned processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. A general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the application can be directly manifested as being executed by a hardware processor, or executed by a combination of hardware and software modules within the processor.

[0210] The memory may include high-speed random access memory (RAM) or non-volatile memory (NVM), such as at least one disk storage device, and may also be a USB flash drive, external hard drive, read-only memory, disk or optical disc, etc.

[0211] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, the buses shown in the accompanying drawings are not limited to a single bus or a single type of bus.

[0212] The aforementioned storage media can be implemented from any type of volatile or non-volatile storage device or a combination thereof, such as Static Random-Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The storage media can be any available medium accessible to general-purpose or special-purpose computers.

[0213] An exemplary storage medium is coupled to a processor, enabling the processor to read information from and write information to the storage medium. Alternatively, the storage medium can be an integral part of the processor. Both the processor and the storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the processor and storage medium can exist as discrete components in an electronic device or host device.

[0214] The above description is merely a specific implementation of the embodiments of this application, but the protection scope of the embodiments of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the embodiments of this application should be covered within the protection scope of the embodiments of this application. Therefore, the protection scope of the embodiments of this application should be determined by the protection scope of the claims.

Claims

1. A self-cleaning method for a dehumidifier, characterized in that, The dehumidifier includes a compressor, a fan, and an evaporator; The dehumidifier has at least a self-cleaning mode, and the method includes: When the dehumidifier starts its self-cleaning mode, the compressor is controlled to run continuously at a constant power, causing frost to form on the surface of the evaporator. After frost forms on the evaporator surface, the compressor is shut off, and the fan speed is adjusted to defrost the evaporator surface. The fan speed during the defrosting process on the evaporator surface is greater than the fan speed during the frosting process on the evaporator surface.

2. The method according to claim 1, characterized in that, During the frosting process on the evaporator surface, the fan is in the off state; Alternatively, the method may further include: During the frosting process on the evaporator surface, the fan speed is reduced.

3. The method according to claim 1, characterized in that, The dehumidifier also includes an exhaust pipe, and the method further includes: During the frosting process on the evaporator surface, the fan speed is positively correlated with the temperature of the exhaust pipe.

4. The method according to claim 3, characterized in that, The dehumidifier also includes a temperature sensor, and the exhaust pipe is connected to the compressor. The temperature sensor is used to detect a first temperature of the exhaust pipe. During the frosting process on the evaporator surface, the fan speed is positively correlated with the temperature of the exhaust pipe, including: During the frosting process on the evaporator surface, the target speed of the fan is determined based on the first temperature detected by the temperature sensor, and the fan is controlled to operate at the target speed; the target speed is positively correlated with the first temperature.

5. The method according to claim 4, characterized in that, During the frosting process on the evaporator surface, the fan operates at a first speed suitable for the frosting conditions; determining the target speed of the fan based on the first temperature detected by the temperature sensor, and controlling the fan to operate at the target speed, includes: When the first temperature is determined to be greater than or equal to a preset temperature threshold, the first rotational speed of the fan is increased; the preset temperature threshold is less than a safe temperature threshold. Alternatively, when it is determined that the first temperature is less than the preset temperature threshold, the fan is controlled to continue to maintain the first rotational speed.

6. The method according to claim 1, characterized in that, The dehumidifier also includes a temperature sensor for detecting a second temperature of the coil in the evaporator; controlling the compressor to operate continuously at a constant power, causing frost to form on the evaporator surface, includes: The compressor is controlled to run at a constant power for a first duration until the second temperature detected by the temperature sensor is lower than the preset frosting temperature, and the duration for which the second temperature is lower than the preset frosting threshold is greater than the preset frosting duration, so that the surface of the evaporator is frosted.

7. The method according to claim 1, characterized in that, The dehumidifier also includes a temperature sensor for detecting a second temperature of the coil in the evaporator; adjusting the fan speed to defrost the evaporator surface includes: The fan is controlled to run at a second speed for a second duration until the second temperature detected by the temperature sensor reaches the preset defrosting temperature, so that the surface of the evaporator defrosts.

8. The method according to claim 7, characterized in that, The second rotational speed is the maximum rotational speed of the fan.

9. The method according to claim 1, characterized in that, The dehumidifier also has a dehumidification mode. When the dehumidifier is in the dehumidification mode, the fan has a third speed, which is greater than the speed of the fan during the frosting process on the evaporator surface.

10. The method according to claim 1, characterized in that, The method further includes: The operating time of the fan during the frosting process on the evaporator surface is determined based on the ambient temperature and / or ambient relative humidity.

11. The method according to claim 10, characterized in that, The ambient temperature is positively correlated with the operating time of the fan during the frosting process on the evaporator surface; And / or, the relative humidity of the environment is negatively correlated with the operating time of the fan during the frosting process on the evaporator surface.

12. The method according to claim 1, characterized in that, The method further includes: During the defrosting process on the evaporator surface, the rotation direction of the fan is adjusted to reverse its direction.

13. A dehumidifier, characterized in that, The dehumidifier includes a compressor, a fan, an evaporator, and a controller, the controller being used to perform the method as described in any one of claims 1-12.

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