WO2023179041A1 - Method and apparatus for controlling variable-frequency dehumidifier, electronic device and storage medium - Google Patents

Abstract

The present application relates to the technical field of variable-frequency dehumidifiers, and discloses a method for controlling a variable-frequency dehumidifier, comprising: obtaining an air inflow temperature of an air inlet and air inflow humidity of the air inlet; obtaining an air outflow temperature of an air outlet and air outflow humidity of the air outlet; obtaining an air inflow/outflow dew point difference value according to the air inflow temperature of the air inlet, the air inflow humidity of the air inlet, the air outflow temperature of the air outlet and the air outflow humidity of the air outlet; and changing the frequency of a compressor of the variable-frequency dehumidifier according to the air inflow/outflow dew point difference value so as to adjust the humidity of a preset region. In this way, the air inflow/outflow dew point difference value is obtained by means of the air inflow temperature of the air inlet and the air outflow temperature of the air outlet, such that the frequency of the compressor of the variable-frequency dehumidifier can be changed according to the dew point difference value, considering the influence of temperature on humidity, thereby improving the humidity adjustment accuracy of the variable-frequency dehumidifier. The present application further discloses an apparatus for controlling a variable-frequency dehumidifier, an electronic device and a storage medium.

Description

Method and device, electronic equipment, storage medium for controlling variable frequency dehumidifier

This application is filed based on a Chinese patent application with application number 202210278513.3 and a filing date of March 21, 2022, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated into this application as a reference.

Technical field

This application relates to the technical field of variable frequency dehumidifiers, for example, to a method and device, electronic equipment, and storage media for controlling a variable frequency dehumidifier.

Background technique

If the indoor humidity is too high, it will lead to the growth of indoor bacteria, user susceptibility to diseases, moldy furniture and other adverse consequences, thus adversely affecting the user's life. In order to avoid or reduce the occurrence of the above situations, a large number of families or companies use variable frequency dehumidifiers to adjust indoor humidity.

In the process of implementing the embodiments of the present disclosure, it was found that there are at least the following problems in the related technology: the variable frequency dehumidifier adjusts the frequency of the variable frequency dehumidifier compressor according to the indoor humidity, ignoring the impact of temperature on humidity, resulting in the variable frequency dehumidifier. Humidity regulation is not precise.

Contents of the invention

In order to provide a basic understanding of some aspects of the disclosed embodiments, a simplified summary is provided below. This summary is not intended to be a general review, nor is it intended to identify key/important elements or delineate the scope of the embodiments, but is intended to serve as a prelude to the detailed description that follows.

Embodiments of the present disclosure provide a method and device, electronic equipment, and storage media for controlling a variable frequency dehumidifier, so as to improve the accuracy of the variable frequency dehumidifier in regulating humidity.

In some embodiments, the method of controlling a variable frequency dehumidifier includes: obtaining the inlet air temperature and the inlet air humidity of the inlet air; obtaining the outlet air temperature and the outlet air humidity of the outlet air; according to the The inlet air temperature, the inlet air humidity, the outlet air temperature and the outlet air humidity are used to obtain the dew point difference between the inlet and outlet air; the compressor frequency of the compressor of the variable frequency dehumidifier is changed according to the dew point difference, so as to Adjust the humidity in a preset area.

In some embodiments, the device for controlling a variable frequency dehumidifier includes a processor and a memory storing program instructions. The processor is configured to execute the above-mentioned method for controlling the variable frequency dehumidifier when running the program instructions. Dehumidifier method.

In some embodiments, the electronic device includes the above-mentioned device for controlling a variable frequency dehumidifier.

In some embodiments, the storage medium stores program instructions that, when running, execute the above-mentioned method for controlling a variable frequency dehumidifier.

The methods and devices, electronic equipment, and storage media for controlling a variable frequency dehumidifier provided by embodiments of the present disclosure can achieve the following technical effects: by obtaining the inlet air temperature and the inlet air humidity, the outlet air temperature can be obtained. Based on the air temperature and outlet air humidity, the dew point difference between the inlet and outlet air is obtained based on the inlet air temperature, inlet air humidity, outlet air temperature and outlet air humidity, and the compressor frequency of the compressor of the variable frequency dehumidifier is changed based on the dew point difference. To adjust the humidity in the preset area. In this way, the dew point difference of the inlet and outlet air is obtained by using the inlet air temperature and the outlet air temperature, and the compressor frequency of the compressor of the variable frequency dehumidifier is changed according to the dew point difference, taking into account the influence of temperature on humidity. Variable frequency dehumidifier regulates humidity with precision.

The above general description and the following description are exemplary and explanatory only and are not intended to limit the application.

Description of the drawings

One or more embodiments are exemplified by corresponding drawings. These exemplary descriptions and drawings do not constitute limitations to the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings are not limited to scale and in which:

Figure 1 is a schematic diagram of a method for controlling a variable frequency dehumidifier provided by an embodiment of the present disclosure;

Figure 2 is a schematic diagram of another method for controlling a variable frequency dehumidifier provided by an embodiment of the present disclosure;

Figure 3 is a schematic diagram of another method for controlling a variable frequency dehumidifier provided by an embodiment of the present disclosure;

Figure 4 is a schematic diagram of another method for controlling a variable frequency dehumidifier provided by an embodiment of the present disclosure;

Figure 5 is a schematic diagram of a device for controlling a variable frequency dehumidifier provided by an embodiment of the present disclosure;

Figure 6 is a schematic diagram of another device for controlling a variable frequency dehumidifier provided by an embodiment of the present disclosure;

Figure 7 is a schematic diagram of another device for controlling a variable frequency dehumidifier provided by an embodiment of the present disclosure;

FIG. 8 is a schematic diagram of an electronic device provided by an embodiment of the present disclosure, taking a variable frequency dehumidifier as an example.

Detailed ways

In order to understand the characteristics and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The attached drawings are for reference only and are not intended to limit the embodiments of the present disclosure. In the following technical description, for convenience of explanation, multiple details are provided to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown simplified to simplify the drawings.

The terms "first", "second", etc. in the description and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that data so used are interchangeable under appropriate circumstances for the purposes of the embodiments of the disclosure described herein. Furthermore, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

Unless otherwise stated, the term "plurality" means two or more.

In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an "or" relationship. For example, A/B means: A or B.

The term "and/or" is an association relationship describing objects, indicating that three relationships can exist. For example, A and/or B means: A or B, or A and B.

The term "correspondence" can refer to an association relationship or a binding relationship. The correspondence between A and B refers to an association relationship or a binding relationship between A and B.

In the embodiment of the present disclosure, electronic equipment is used to obtain the inlet air temperature, the inlet air humidity, the outlet air temperature and the outlet air humidity. According to the inlet air temperature, the inlet air humidity The dew point difference of the incoming and outgoing air is obtained by using the wind humidity, the outgoing air temperature and the outgoing air humidity, and the compressor frequency of the compressor of the variable frequency dehumidifier is changed according to the dew point difference of the incoming and outgoing air to control the preset area. Humidity is adjusted, taking into account the impact of temperature on humidity, improving the accuracy of the variable frequency dehumidifier in regulating humidity.

As shown in FIG. 1 , an embodiment of the present disclosure provides a method for controlling a variable frequency dehumidifier, including:

Step S101: The electronic device obtains the inlet air temperature and the inlet air humidity of the inlet air; the electronic device obtains the outlet air temperature and the outlet air humidity of the outlet air.

Step S102: The electronic device obtains the dew point difference of the inlet and outlet air based on the inlet air temperature, the inlet air humidity, the outlet air temperature, and the outlet air humidity.

Step S103: The electronic device changes the compressor frequency of the compressor of the variable frequency dehumidifier according to the dew point difference between the incoming and outgoing air to adjust the humidity in the preset area.

Using the method for controlling the variable frequency dehumidifier provided by the embodiment of the present disclosure, by obtaining the inlet air temperature and the inlet air humidity of the inlet air, the outlet air temperature and the outlet air humidity of the outlet air are obtained. According to the inlet air Temperature, inlet air humidity, outlet air temperature and outlet air humidity are used to obtain the dew point difference between the inlet and outlet air, and the compressor frequency of the compressor of the variable frequency dehumidifier is changed according to the dew point difference to adjust the humidity in the preset area. In this way, the dew point difference of the inlet and outlet air is obtained by using the inlet air temperature and the outlet air temperature, so as to change the compressor frequency of the variable frequency dehumidifier compressor according to the dew point difference, taking into account the influence of temperature on humidity. Improved the accuracy of the variable frequency dehumidifier in regulating humidity.

Optionally, the electronic device includes a server or a variable frequency dehumidifier.

Optionally, when the electronic device is a server, the server obtains the inlet air temperature and the inlet air humidity through the following method: the server receives the inlet air temperature and the inlet air humidity sent by the variable frequency dehumidifier. Wind humidity.

Optionally, when the electronic device is a server, the server obtains the outlet air temperature and the outlet air humidity of the air through the following method: the server receives the outlet air temperature and the outlet air humidity sent by the variable frequency dehumidifier. Wind humidity.

Optionally, when the electronic device is a variable frequency dehumidifier, the variable frequency dehumidifier obtains the inlet air temperature and the inlet air humidity of the incoming air through the following method: the variable frequency dehumidifier detects the temperature of the air inlet through the first temperature sensor, Obtain the inlet air temperature; the variable frequency dehumidifier detects the humidity of the air inlet through the first humidity sensor to obtain the inlet air humidity. In some embodiments, the first temperature sensor and the first humidity sensor are disposed at the air inlet of the variable frequency dehumidifier.

Optionally, when the electronic device is a variable frequency dehumidifier, the variable frequency dehumidifier obtains the outlet air temperature and the outlet air humidity of the air through the following method: the variable frequency dehumidifier detects the temperature of the air outlet through the second temperature sensor, Obtain the outlet air temperature; the variable frequency dehumidifier detects the humidity of the air outlet through the second humidity sensor to obtain the outlet air humidity. In some embodiments, the second temperature sensor and the second humidity sensor are disposed at the air outlet of the variable frequency dehumidifier.

Optionally, when the electronic device is a variable frequency dehumidifier, the variable frequency dehumidifier obtains the outlet air temperature and the outlet air humidity of the air through the following methods: the variable frequency dehumidifier obtains the outlet air humidity set by the user; the variable frequency dehumidifier obtains the outlet air humidity set by the user; The machine detects the humidity of the air outlet through the second humidity sensor to obtain the air outlet humidity.

Optionally, the outlet air humidity and inlet air humidity are absolute humidity.

Optionally, the electronic device obtains the dew point difference between the inlet and outlet air based on the inlet air temperature, inlet air humidity, outlet air temperature and outlet air humidity, including: the electronic device obtains the inlet air dew point of the variable frequency dehumidifier based on the inlet air temperature and inlet air humidity. temperature; the electronic device obtains the outlet dew point temperature of the variable frequency dehumidifier based on the outlet air temperature and outlet air humidity; the electronic device obtains the dew point difference based on the inlet air dew point temperature and the outlet air dew point temperature. In this way, the electronic device obtains the inlet air dew point temperature of the variable frequency dehumidifier through the inlet air temperature and the inlet air humidity, obtains the outlet air dew point temperature of the variable frequency dehumidifier based on the outlet air temperature and outlet air humidity, and obtains the outlet air dew point temperature of the variable frequency dehumidifier based on the inlet air dew point temperature and outlet air dew point. The temperature obtains the dew point difference, so that the variable frequency dehumidifier can change the compressor frequency of the compressor according to the dew point difference, taking into account the influence of temperature on humidity, and improving the accuracy of the variable frequency dehumidifier in regulating humidity.

Optionally, the electronic device obtains the inlet dew point temperature of the variable frequency dehumidifier based on the inlet air temperature and the inlet air humidity, including: the electronic device searches for the isotherm corresponding to the inlet air temperature and the inlet air humidity in the preset enthalpy-humidity diagram. The dew point temperature corresponding to the intersection point between equal relative humidity lines is determined as the inlet air dew point temperature of the variable frequency dehumidifier.

Optionally, the electronic device obtains the inlet air dew point temperature of the variable frequency dehumidifier based on the inlet air temperature and inlet air humidity, including: the electronic device searches for the dew point corresponding to both the inlet air temperature and the inlet air humidity in the preset dew point temperature data table. Temperature; the preset dew point temperature data table stores the corresponding relationship between temperature, humidity and dew point temperature; the dew point temperature corresponding to the inlet air temperature and the inlet air humidity is determined as the inlet air dew point temperature of the variable frequency dehumidifier.

Optionally, the electronic device obtains the outlet dew point temperature of the variable frequency dehumidifier based on the outlet air temperature and outlet air humidity, including: the electronic device searches for the isotherm corresponding to the outlet air temperature and the outlet air humidity in a preset enthalpy-humidity diagram. The dew point temperature corresponding to the intersection between equal relative humidity lines is determined as the outlet dew point temperature of the variable frequency dehumidifier; optionally, the preset enthalpy-humidity diagram stores the corresponding relationship between temperature, relative humidity and dew point temperature. .

Optionally, the electronic device obtains the outlet air dew point temperature of the variable frequency dehumidifier based on the outlet air temperature and outlet air humidity, including: the electronic device searches for the dew point corresponding to the outlet air temperature and outlet air humidity in a preset dew point temperature data table. Temperature; the preset dew point temperature data table stores the corresponding relationship between temperature, humidity and dew point temperature; the dew point temperature corresponding to the outlet air temperature and outlet air humidity is determined as the outlet air dew point temperature of the variable frequency dehumidifier.

Optionally, the electronic device obtains the dew point difference based on the inlet air dew point temperature and the outlet air dew point temperature, including: the electronic device determines the difference between the inlet air dew point temperature and the outlet air dew point temperature as the inlet and outlet air dew point difference. In this way, the difference between the inlet air dew point temperature and the outlet air dew point temperature is determined as the dew point difference of the inlet and outlet air, so that the compressor frequency of the compressor of the variable frequency dehumidifier can be changed according to the dew point difference, taking into account the temperature versus humidity The influence of the variable frequency dehumidifier improves the accuracy of adjusting humidity.

Optionally, the electronic device changes the compressor frequency of the compressor of the variable frequency dehumidifier according to the dew point difference to adjust the humidity in the preset area, including: the electronic device determines the difference range in which the dew point difference lies; the electronic device determines The target compressor frequency corresponding to the difference range; the electronic device adjusts the compressor frequency of the compressor to the target compressor frequency to adjust the humidity in the preset area. In this way, by adjusting the compressor frequency of the compressor to the target compressor frequency corresponding to the difference range of the dew point difference, the humidity in the preset area is adjusted. In this way, the humidity is adjusted according to the dew point difference between the inlet and outlet air, which improves the accuracy of the variable frequency dehumidifier in adjusting humidity.

Optionally, the electronic device determines the difference range in which the dew point difference exists, including: the electronic device searches for the difference range corresponding to the dew point difference in a preset dew point difference range data table.

Optionally, the electronic device determines the difference range in which the dew point difference lies, including: when the dew point difference is greater than the first preset difference, the electronic device determines that the difference range in which the dew point difference lies is the first preset difference. Set a range; when the dew point difference is greater than the second preset difference and the dew point difference is less than or equal to the first preset difference, the electronic device determines that the difference range in which the dew point difference is located is the second preset range; When the dew point difference is greater than the third preset difference and the dew point difference is less than or equal to the second preset difference, the electronic device determines that the difference range in which the dew point difference is located is the third preset range; the electronic device When the dew point difference is greater than the fourth preset difference and the dew point difference is less than or equal to the third preset difference, the difference range in which the dew point difference is located is determined to be the fourth preset range; the electronic device is in the dew point difference range. If it is less than or equal to the fourth preset difference, the difference range in which the dew point difference is located is determined to be the fifth preset range. Optionally, the first preset difference is greater than the second preset difference; the second preset difference is greater than the third preset difference; the third preset difference is greater than the fourth preset difference; the fourth preset difference is The difference is greater than the fifth preset difference.

Optionally, the first preset difference value is 8; the second preset difference value is 5; the third preset difference value is 2; and the fourth preset difference value is -1.

Optionally, the electronic device determines the target compressor frequency corresponding to the difference range, including: the electronic device searches for the target compressor frequency corresponding to the difference range in a preset target compressor frequency data table; the preset target compressor frequency The correspondence between the target compressor frequency and the difference range is stored in the data table. In this way, the electronic device can accurately obtain the target compressor frequency by searching the target compressor frequency corresponding to the difference range in the preset target compressor frequency data table, so as to change the compressor frequency of the compressor to the target compressor frequency, can accurately adjust the humidity in the preset area, improving the accuracy of the variable frequency dehumidifier in adjusting humidity.

In some embodiments, the first preset difference is 8, the dew point difference is 10, the dew point difference is greater than the first preset difference, and the electronic device determines that the difference range in which the dew point difference is located is the first preset range. , that is, (8, +∞]; where ∞ is the infinity symbol; the electronic device searches for the target compressor frequency corresponding to the difference range in the preset target compressor frequency data table, that is, the highest frequency set by the compressor , is 64Hz, which means that the dehumidification requirement of the variable frequency dehumidifier is the highest, and then the electronic device adjusts the compressor frequency of the compressor to 64Hz to adjust the humidity in the preset area. In this way, the dehumidification efficiency of the variable frequency dehumidifier can be guaranteed. It can also ensure the reliability of the system temperature and pressure of the internal refrigeration cycle of the variable frequency dehumidifier, ensuring the safety of users using the variable frequency dehumidifier.

In some embodiments, the first preset difference value is 8, the second preset difference value is 5, the dew point difference value is 7, the dew point difference value is greater than the second preset difference value and the dew point difference value is less than or equal to the first preset difference value. Assuming a difference value, the electronic device determines that the difference range in which the dew point difference is located is the second preset range, that is, (5, 8]. The electronic device searches for the corresponding difference range in the preset target compressor frequency data table. The target compressor frequency, that is, the second highest frequency set by the compressor, is 44Hz, which means that the dehumidification requirement of the variable frequency dehumidifier is the second highest. Then the electronic device adjusts the compressor frequency of the compressor to 44Hz to control the dehumidification of the preset area. Humidity is adjusted.

In some embodiments, the third preset difference value is 2, the second preset difference value is 5, the dew point difference value is 4, the dew point difference value is greater than the third preset difference value and the dew point difference value is less than or equal to the second preset difference value. Assuming a difference value, the electronic device determines that the difference range in which the dew point difference is located is the third preset range, that is, (2, 5]. The electronic device searches for the corresponding difference range in the preset target compressor frequency data table. The target compressor frequency, that is, the medium and low frequency set by the compressor, is 28Hz, which means that the dehumidification requirement of the variable frequency dehumidifier is medium and low. Then the electronic device adjusts the compressor frequency of the compressor to 28Hz to control the preset area. adjust the humidity.

In some embodiments, the third preset difference value is 2, the fourth preset difference value is -1, the dew point difference value is 1, the dew point difference value is greater than the fourth preset difference value and the dew point difference value is less than or equal to the third Preset difference value, the electronic device determines that the difference range in which the dew point difference is located is the fourth preset range, that is, (-1, 2], and the electronic device searches for the difference value in the preset target compressor frequency data table The target compressor frequency corresponding to the range, that is, the low frequency set by the compressor, is 16Hz, which means that the dehumidification requirements of the variable frequency dehumidifier are low. Then the electronic device adjusts the compressor frequency of the compressor to 16Hz to control the dehumidification of the preset area. Humidity is adjusted.

In some embodiments, the fourth preset difference is -1, the dew point difference is -5, the dew point difference is less than or equal to the fourth preset difference, and the electronic device determines that the dew point difference is in a difference range of Five preset ranges, namely (-∞, -1], the electronic device searches for the target compressor frequency corresponding to the difference range in the preset target compressor frequency data table, that is, the lowest frequency set by the compressor, which is 0Hz means that the variable frequency dehumidifier has no dehumidification requirements, and then the electronic device adjusts the compressor frequency of the compressor to 0Hz, controls the compressor to stop, and does not adjust the humidity in the preset area.

In this way, the electronic device searches for the target compressor frequency corresponding to the difference range in the preset target compressor frequency data table, so that the compressor can operate at its corresponding target compressor frequency according to the dehumidification demand of the variable frequency dehumidifier, which improves efficiency. Variable frequency dehumidifier regulates humidity with precision.

As shown in FIG. 2 , an embodiment of the present disclosure provides a method for controlling a variable frequency dehumidifier, including:

Step S201, the electronic device obtains the inlet air temperature and the inlet air humidity of the inlet air; the electronic device obtains the outlet air temperature and the outlet air humidity of the outlet air.

Step S202: The electronic device obtains the inlet air dew point temperature of the variable frequency dehumidifier based on the inlet air temperature and the inlet air humidity; the electronic device obtains the outlet air dew point temperature of the variable frequency dehumidifier based on the outlet air temperature and outlet air humidity.

Step S203: The electronic device determines the difference between the inlet air dew point temperature and the outlet air dew point temperature as the dew point difference between the inlet and outlet air.

Step S204: The electronic device determines the difference range within which the dew point difference exists.

Step S205, the electronic device searches for the target compressor frequency corresponding to the difference range in the preset target compressor frequency data table; the preset target compressor frequency data table stores the distance between the target compressor frequency and the difference range. Correspondence.

In step S206, the electronic device adjusts the compressor frequency of the compressor to the target compressor frequency to adjust the humidity in the preset area.

Using the method for controlling a variable frequency dehumidifier provided by the embodiment of the present disclosure, the inlet air dew point temperature and the outlet air dew point temperature are obtained through the inlet air temperature, the inlet air humidity, the outlet air temperature and the outlet air humidity, and the inlet air dew point temperature and the outlet air dew point temperature are obtained. The difference between the wind dew point temperature is determined as the dew point difference between the inlet and outlet air, determine the difference range where the dew point difference lies, and find the target compressor frequency corresponding to the difference range in the preset target compressor frequency data table. , adjust the compressor frequency of the compressor to the target compressor frequency to adjust the humidity in the preset area. In this way, the dew point difference of the inlet and outlet air is obtained by using the inlet air temperature and the outlet air temperature, so as to change the compressor frequency of the variable frequency dehumidifier compressor according to the dew point difference, taking into account the influence of temperature on humidity. Improved the accuracy of the variable frequency dehumidifier in regulating humidity.

Optionally, after the electronic device changes the compressor frequency of the compressor of the variable frequency dehumidifier according to the dew point difference, it also includes: the electronic device obtains the coil temperature of the evaporator of the variable frequency dehumidifier; the electronic device adjusts the frequency of the compressor according to the coil temperature. Compressor frequency. In this way, after the electronic device changes the compressor frequency of the compressor of the inverter dehumidifier according to the dew point difference, the compressor frequency of the compressor is adjusted by the coil temperature of the evaporator of the inverter dehumidifier, and dehumidification can be performed using the inverter dehumidifier. At the same time, it adjusts the coil temperature of the evaporator, improves the heat exchange efficiency of the evaporator, and reduces the poor cooling effect of the evaporator due to frost on the surface of the evaporator, thereby improving the accuracy of the variable frequency dehumidifier in regulating humidity. Spend.

Optionally, when the electronic device is a server, the electronic device obtains the coil temperature of the evaporator of the variable frequency dehumidifier, including: the electronic device receives the coil temperature of the evaporator sent by the variable frequency dehumidifier.

Optionally, when the electronic device is a variable frequency dehumidifier, the electronic device obtains the coil temperature of the evaporator of the variable frequency dehumidifier, including: the electronic device obtains a temperature detector and detects the coil temperature of the evaporator. Optionally, the temperature detector is a third temperature sensor.

As shown in FIG. 3 , an embodiment of the present disclosure provides a method for controlling a variable frequency dehumidifier, including:

Step S301: The electronic device obtains the inlet air temperature and the inlet air humidity of the inlet air; the electronic device obtains the outlet air temperature and the outlet air humidity of the outlet air.

Step S302: The electronic device obtains the dew point difference between the inlet and outlet air based on the inlet air temperature, inlet air humidity, outlet air temperature and outlet air humidity.

Step S303: The electronic device changes the compressor frequency of the compressor of the variable frequency dehumidifier according to the dew point difference to adjust the humidity in the preset area.

Step S304: The electronic device obtains the coil temperature of the evaporator of the variable frequency dehumidifier.

Step S305: The electronic device adjusts the compressor frequency of the compressor according to the coil temperature.

Using the method for controlling the variable frequency dehumidifier provided by the embodiment of the present disclosure, by obtaining the inlet air temperature and the inlet air humidity of the inlet air, the outlet air temperature and the outlet air humidity of the outlet air are obtained. According to the inlet air Temperature, inlet air humidity, outlet air temperature and outlet air humidity are used to obtain the dew point difference between the inlet and outlet air. According to the dew point difference, the compressor frequency of the variable frequency dehumidifier is changed to adjust the humidity in the preset area and adjust the temperature according to the panel. Tube temperature regulates the compressor frequency of the compressor. In this way, the dew point difference of the inlet and outlet air is obtained by using the inlet air temperature and the outlet air temperature, so as to change the compressor frequency of the variable frequency dehumidifier compressor according to the dew point difference, taking into account the influence of temperature on humidity. Adjusting the coil temperature of the evaporator improves the heat exchange efficiency of the evaporator, reduces the problem of poor cooling effect due to frost on the evaporator surface, and improves the accuracy of the variable frequency dehumidifier in regulating humidity.

Optionally, the electronic device adjusts the compressor frequency of the compressor according to the coil temperature, including: the electronic device reduces compression when the coil temperature is less than or equal to the first preset temperature and the coil temperature is greater than the second preset temperature. The compressor frequency of the compressor; and/or, the electronic device adjusts the compressor frequency of the compressor to the preset frequency when the coil temperature is less than or equal to the second preset temperature. In this way, when the coil temperature is less than or equal to the first preset temperature and the coil temperature is greater than the second preset temperature, the compressor frequency of the compressor is reduced, and when the coil temperature is less than or equal to the second preset temperature Under the condition, the compressor frequency of the compressor is adjusted to the preset frequency, which can adjust the temperature of the evaporator, reducing the problem of poor cooling effect of the evaporator due to frost on the surface of the evaporator, thus improving the efficiency of the variable frequency dehumidifier. Precision in regulating humidity.

Optionally, when the coil temperature is less than or equal to the third preset temperature and the coil temperature is greater than the first preset temperature, the electronic device controls the compressor frequency of the compressor to no longer increase.

In some embodiments, the third preset temperature is 1°C, the first preset temperature is -1°C, the coil temperature of the evaporator is 0°C, the coil temperature of the evaporator is less than or equal to the third preset temperature and When the coil temperature is greater than the first preset temperature, the electronic device controls the compressor's compressor frequency no longer to increase.

In some embodiments, the first preset temperature is -1°C, the second preset temperature is -4°C, the coil temperature of the evaporator is -3°C, and the coil temperature of the evaporator is less than or equal to the first preset temperature. temperature and the coil temperature is greater than the second preset temperature, the electronic device reduces the compressor frequency of the compressor.

In some embodiments, the preset frequency is 0 Hz, the second preset temperature is -4°C, the coil temperature of the evaporator is -5°C, the coil temperature of the evaporator is less than or equal to the second preset temperature, and the electronic device Adjust the compressor frequency of the compressor to the preset frequency, that is, 0Hz, so that the variable frequency dehumidifier does not need to continue dehumidification when the evaporator surface is severely frosted, making it more intelligent and energy-saving.

Optionally, the electronic device adjusts the compressor frequency of the compressor to the preset frequency when the coil temperature is less than or equal to the second preset temperature, including: the electronic device adjusts the compressor frequency of the compressor to the preset frequency when the coil temperature is less than or equal to the second preset temperature. If the coil temperature is less than or equal to the second preset temperature, the duration is obtained; if the duration is greater than or equal to the preset time, the compressor frequency of the compressor is adjusted to the preset frequency. In this way, the frost on the surface of the evaporator can be reduced, so that a large amount of frost will not form on the surface of the evaporator, and the occurrence of the evaporator being wrapped in frost can be reduced.

In some embodiments, the preset frequency is 0Hz, the preset time is 300s, the second preset temperature is -4°C, the coil temperature of the evaporator is -5°C, and the coil temperature of the evaporator is less than or equal to the second If the coil temperature is less than or equal to the second preset temperature, the duration for which the coil temperature is less than or equal to the second preset temperature is obtained, 305s; if the duration for which the coil temperature is less than or equal to the second preset temperature is greater than the preset time of 300s, then the compressor The frequency is adjusted to the preset frequency, which is 0Hz.

As shown in FIG. 4 , an embodiment of the present disclosure provides a method for controlling a variable frequency dehumidifier, including:

Step S401, the electronic device obtains the inlet air temperature and the inlet air humidity of the inlet air; the electronic device obtains the outlet air temperature and the outlet air humidity of the outlet air;

Step S402, the electronic device obtains the inlet air dew point temperature of the variable frequency dehumidifier based on the inlet air temperature and the inlet air humidity; the electronic device obtains the outlet air dew point temperature of the variable frequency dehumidifier based on the outlet air temperature and outlet air humidity;

Step S403: The electronic device determines the difference between the inlet air dew point temperature and the outlet air dew point temperature as the dew point difference of the inlet and outlet air.

Step S404: The electronic device determines the difference range within which the dew point difference exists.

Step S405, the electronic device searches for the target compressor frequency corresponding to the difference range in the preset target compressor frequency data table; the preset target compressor frequency data table stores the distance between the target compressor frequency and the difference range. Correspondence.

In step S406, the electronic device adjusts the compressor frequency of the compressor to the target compressor frequency to adjust the humidity in the preset area.

Step S407: The electronic device obtains the coil temperature of the evaporator of the variable frequency dehumidifier.

Step S408: The electronic device reduces the compressor frequency of the compressor when the coil temperature is less than or equal to the first preset temperature; and/or the electronic device reduces the compressor frequency when the coil temperature is less than or equal to the second preset temperature. , adjust the compressor frequency of the compressor to the preset frequency.

Using the method for controlling a variable frequency dehumidifier provided by the embodiment of the present disclosure, the inlet air dew point temperature and the outlet air dew point temperature are obtained through the inlet air temperature, the inlet air humidity, the outlet air temperature and the outlet air humidity, and the inlet air dew point temperature and the outlet air dew point temperature are obtained. The difference between the wind dew point temperature is determined as the dew point difference between the inlet and outlet air, determine the difference range where the dew point difference lies, and find the target compressor frequency corresponding to the difference range in the preset target compressor frequency data table. , adjust the compressor frequency of the compressor to the target compressor frequency to adjust the humidity in the preset area, and adjust the compressor frequency of the compressor according to the coil temperature. In this way, the dew point difference of the inlet and outlet air is obtained by using the inlet air temperature and the outlet air temperature, so as to change the compressor frequency of the variable frequency dehumidifier compressor according to the dew point difference, taking into account the influence of temperature on humidity. Adjusting the coil temperature of the evaporator improves the heat exchange efficiency of the evaporator, reduces the problem of poor cooling effect due to frost on the evaporator surface, and improves the accuracy of the variable frequency dehumidifier in regulating humidity.

Optionally, after the electronic device changes the compressor frequency of the compressor of the variable frequency dehumidifier according to the dew point difference, it also includes: the electronic device obtains the coil temperature of the evaporator of the variable frequency dehumidifier; the electronic device adjusts the frequency of the compressor in the preset target wind speed data table Find the target wind speed corresponding to the coil temperature; the preset target wind speed data table stores the corresponding relationship between the target wind speed and the coil temperature; adjust the wind speed of the fan to the target wind speed. In this way, by adjusting the wind speed through the evaporator coil temperature, the air flow rate on the evaporator surface can be controlled, thereby controlling the evaporator coil temperature and reducing the occurrence of frost on the evaporator surface.

As shown in FIG. 5 , an embodiment of the present disclosure provides a device 50 for controlling a variable frequency dehumidifier, including: a first acquisition module 1 , a second acquisition module 2 and a first adjustment module 3 . The first acquisition module 1 is configured to acquire the inlet air temperature and the inlet air humidity of the inlet air; acquire the outlet air temperature and outlet air humidity of the outlet air; the second acquisition module 2 is configured to acquire the inlet air temperature according to the inlet air temperature. , inlet air humidity, outlet air temperature and outlet air humidity to obtain the dew point difference of the inlet and outlet air; the first adjustment module 3 is configured to change the compressor frequency of the compressor of the variable frequency dehumidifier according to the dew point difference to adjust the frequency of the compressor in the preset area. Humidity is adjusted.

Using the device 50 for controlling the variable frequency dehumidifier provided by the embodiment of the present disclosure, by obtaining the inlet air temperature and the inlet air humidity, the outlet air temperature and the outlet air humidity are obtained, and according to the inlet air temperature, the outlet air temperature and the outlet air humidity are obtained. The wind temperature, inlet air humidity, outlet air temperature and outlet air humidity are used to obtain the dew point difference between the inlet and outlet air, and the compressor frequency of the compressor of the variable frequency dehumidifier is changed according to the dew point difference to adjust the humidity in the preset area. In this way, the dew point difference of the inlet and outlet air is obtained by using the inlet air temperature and the outlet air temperature, so as to change the compressor frequency of the variable frequency dehumidifier compressor according to the dew point difference, taking into account the influence of temperature on humidity. Improved the accuracy of the variable frequency dehumidifier in regulating humidity.

Optionally, the second acquisition module is configured to obtain the dew point difference value of the inlet and outlet air according to the inlet air temperature, inlet air humidity, outlet air temperature and outlet air humidity through the following method: obtain the variable frequency dehumidifier according to the inlet air temperature and inlet air humidity. The inlet air dew point temperature; obtain the outlet air dew point temperature of the variable frequency dehumidifier based on the outlet air temperature and outlet air humidity; obtain the dew point difference based on the inlet air dew point temperature and outlet air dew point temperature.

Optionally, the second acquisition module is configured to obtain the dew point difference value according to the inlet air dew point temperature and the outlet air dew point temperature through the following method: determine the difference between the inlet air dew point temperature and the outlet air dew point temperature as the dew point of the inlet and outlet air difference.

Optionally, the first adjustment module is configured to change the compressor frequency of the compressor of the variable frequency dehumidifier according to the dew point difference to adjust the humidity in the preset area by: determining the difference range in which the dew point difference lies. ; Determine the target compressor frequency corresponding to the difference range; adjust the compressor frequency of the compressor to the target compressor frequency to adjust the humidity in the preset area.

Optionally, the first adjustment module is configured to determine the target compressor frequency corresponding to the difference range through the following method: searching for the target compressor frequency corresponding to the difference range in a preset target compressor frequency data table; The target compressor frequency data table stores the corresponding relationship between the target compressor frequency and the difference range.

As shown in FIG. 6 , the device 50 for controlling a variable frequency dehumidifier provided by the embodiment of the present disclosure also includes: a third acquisition module 4 and a second adjustment module 5 . The third acquisition module 4 is configured to acquire the coil temperature of the evaporator of the variable frequency dehumidifier; the second adjustment module 5 is configured to adjust the compressor frequency of the compressor according to the coil temperature.

Using the device 50 for controlling the variable frequency dehumidifier provided by the embodiment of the present disclosure, by obtaining the inlet air temperature and the inlet air humidity, the outlet air temperature and the outlet air humidity are obtained, and according to the inlet air temperature, the outlet air temperature and the outlet air humidity are obtained. The air temperature, inlet air humidity, outlet air temperature and outlet air humidity are used to obtain the dew point difference between the inlet and outlet air, and the compressor frequency of the compressor of the variable frequency dehumidifier is changed according to the dew point difference to adjust the humidity in the preset area. The evaporator coil temperature regulates the compressor frequency of the compressor. In this way, the dew point difference of the inlet and outlet air is obtained by using the inlet air temperature and the outlet air temperature, so as to change the compressor frequency of the variable frequency dehumidifier compressor according to the dew point difference, taking into account the influence of temperature on humidity. It improves the accuracy of the variable frequency dehumidifier in adjusting humidity. At the same time, it adjusts the compressor frequency of the compressor according to the coil temperature of the evaporator, which can improve the heat exchange efficiency of the evaporator while dehumidifying, and reduce the cost of the evaporator. Frost on its surface causes the evaporator to have poor cooling effect, thereby improving the accuracy of the variable frequency dehumidifier in regulating humidity.

Optionally, the second adjustment module is configured to adjust the compressor frequency of the compressor based on the coil temperature by: reducing the compressor frequency of the compressor if the coil temperature is less than or equal to the first preset temperature; and/or, if the coil temperature is less than or equal to the second preset temperature, adjust the compressor frequency of the compressor to the preset frequency.

As shown in FIG. 7 , an embodiment of the present disclosure provides a device 60 for controlling a variable frequency dehumidifier, including a processor 100 and a memory 101 . Optionally, the device 60 may also include a communication interface (Communication Interface) 102 and a bus 103. Among them, the processor 100, the communication interface 102, and the memory 101 can communicate with each other through the bus 103. Communication interface 102 may be used for information transmission. The processor 100 can call logical instructions in the memory 101 to execute the method for controlling the variable frequency dehumidifier in the above embodiment.

In addition, the above-mentioned logical instructions in the memory 101 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.

As a computer-readable storage medium, the memory 101 can be used to store software programs, computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 100 executes the program instructions/modules stored in the memory 101 to execute functional applications and data processing, that is, to implement the method for controlling the variable frequency dehumidifier in the above embodiment.

The memory 101 may include a stored program area and a stored data area, wherein the stored program area may store an operating system and at least one application program required for a function; the stored data area may store data created according to the use of the terminal device, etc. In addition, the memory 101 may include a high-speed random access memory and may also include a non-volatile memory.

Using the device 60 for controlling the variable frequency dehumidifier provided by the embodiment of the present disclosure, by obtaining the inlet air temperature and the inlet air humidity of the inlet air, the outlet air temperature and the outlet air humidity of the outlet air are obtained. According to the inlet air temperature The wind temperature, inlet air humidity, outlet air temperature and outlet air humidity are used to obtain the dew point difference between the inlet and outlet air, and the compressor frequency of the compressor of the variable frequency dehumidifier is changed according to the dew point difference to adjust the humidity in the preset area. In this way, the dew point difference of the inlet and outlet air is obtained by using the inlet air temperature and the outlet air temperature, so as to change the compressor frequency of the variable frequency dehumidifier compressor according to the dew point difference, taking into account the influence of temperature on humidity. Improved the accuracy of the variable frequency dehumidifier in regulating humidity.

An embodiment of the present disclosure provides an electronic device 10, including the above-mentioned device 50 (60) for controlling a variable frequency dehumidifier.

The electronic device obtains the outlet air temperature and outlet air humidity of the inlet air by acquiring the inlet air temperature and the inlet air humidity. According to the inlet air temperature, inlet air humidity, outlet air temperature and outlet air humidity Obtain the dew point difference between the inlet and outlet air, and change the compressor frequency of the variable frequency dehumidifier according to the dew point difference to adjust the humidity in the preset area. In this way, the dew point difference of the inlet and outlet air is obtained by using the inlet air temperature and the outlet air temperature, so as to change the compressor frequency of the variable frequency dehumidifier compressor according to the dew point difference, taking into account the influence of temperature on humidity. Improved the accuracy of the variable frequency dehumidifier in regulating humidity.

Optionally, the electronic device includes a server or a variable frequency dehumidifier.

As shown in FIG. 8 , an embodiment of the present disclosure provides an electronic device 10 , taking a variable frequency dehumidifier as an example, including the above-mentioned device 50 ( 60 ) for controlling the variable frequency dehumidifier.

The electronic device 10 of the embodiment of the present disclosure also includes: a main body of the device, and the above-mentioned device 50 (60) for controlling the variable frequency dehumidifier. The device 50 (60) for controlling the variable frequency dehumidifier is installed on the main body of the device. The installation relationship described here is not limited to placement inside the electronic device, but also includes installation connections with other components of the electronic device, including but not limited to physical connections, electrical connections, or signal transmission connections. Those skilled in the art can understand that the device 50 (60) for controlling the variable frequency dehumidifier can be adapted to the feasible equipment body, thereby realizing other feasible embodiments.

The embodiment of the present disclosure provides a computer program, which when the computer program is executed by a computer, causes the computer to implement the above method of controlling a variable frequency dehumidifier.

Embodiments of the present disclosure provide a computer program product. The computer program product includes computer instructions stored on a computer-readable storage medium. When the program instructions are executed by a computer, the computer is caused to implement the above-mentioned control of the variable frequency dehumidifier. Methods.

An embodiment of the present disclosure provides a storage medium that stores computer-executable instructions, and the computer-executable instructions are configured to execute the above method for controlling a variable frequency dehumidifier.

Embodiments of the present disclosure provide a computer program product. The computer program product includes a computer program stored on a computer-readable storage medium. The computer program includes program instructions. When the program instructions are executed by a computer, the The computer executes the above method for controlling the variable frequency dehumidifier.

The above-mentioned computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product. The computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network equipment, etc.) to perform all or part of the steps of the method described in the embodiments of the present disclosure. The aforementioned storage media can be non-transitory storage media, including: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk, etc. A medium that can store program code or a temporary storage medium.

The foregoing description and drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples represent only possible variations. Unless explicitly required, individual components and features are optional and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. Furthermore, the words used in this application are used only to describe the embodiments and not to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. . Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed items. In addition, when used in this application, the term "comprise" and its variations "comprises" and/or "comprising" etc. refer to stated features, integers, steps, operations, elements, and/or The presence of a component does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groupings of these. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method or apparatus including the stated element. In this article, each embodiment may focus on its differences from other embodiments, and the same and similar parts among various embodiments may be referred to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiment, then the relevant parts can be referred to the description of the method part.

Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. The skilled person may use different methods to implement the described functionality for each specific application, but such implementations should not be considered to be beyond the scope of the disclosed embodiments. The skilled person can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.

In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units may only be a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined. Either it can be integrated into another system, or some features can be ignored, or not implemented. In addition, the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to implement this embodiment. In addition, each functional unit in the embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

The flowcharts and block diagrams in the Figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code that contains one or more components for implementing the specified logical function(s). Executable instructions. In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two consecutive blocks may actually execute substantially in parallel, or they may sometimes execute in the reverse order, depending on the functionality involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, operations or steps corresponding to different blocks may also occur in a sequence different from that disclosed in the description, and sometimes there is no specific distinction between different operations or steps. order. For example, two consecutive operations or steps may actually be performed substantially in parallel, or they may sometimes be performed in reverse order, depending on the functionality involved. Each block in the block diagram and/or flowchart illustration, and combinations of blocks in the block diagram and/or flowchart illustration, may be implemented by special purpose hardware-based systems that perform the specified functions or actions, or may be implemented using special purpose hardware implemented in combination with computer instructions.

Claims (12)

1. A method for controlling a variable frequency dehumidifier, which is characterized by including:

   Obtain the inlet air temperature and inlet air humidity; obtain the outlet air temperature and outlet air humidity;

   Obtain the dew point difference between the inlet and outlet air according to the inlet air temperature, the inlet air humidity, the outlet air temperature and the outlet air humidity;

   The compressor frequency of the compressor of the variable frequency dehumidifier is changed according to the dew point difference to adjust the humidity in the preset area.
2. The method according to claim 1, characterized in that obtaining the dew point difference between the inlet and outlet air according to the inlet air temperature, the inlet air humidity, the outlet air temperature and the outlet air humidity includes:

   Obtain the inlet air dew point temperature of the variable frequency dehumidifier based on the inlet air temperature and the inlet air humidity; obtain the outlet air dew point temperature of the variable frequency dehumidifier based on the outlet air temperature and the outlet air humidity;

   The dew point difference is obtained based on the inlet air dew point temperature and the outlet air dew point temperature.
3. The method according to claim 1 or 2, characterized in that, obtaining the dew point difference according to the inlet air dew point temperature and the outlet air dew point temperature includes:

   The difference between the inlet air dew point temperature and the outlet air dew point temperature is determined as the dew point difference of the inlet and outlet air.
4. The method according to any one of claims 1 to 3, characterized in that changing the compressor frequency of the compressor of the variable frequency dehumidifier according to the dew point difference to adjust the humidity in the preset area includes:

   Determine the difference range within which the dew point difference lies;

   Determine the target compressor frequency corresponding to the difference range;

   The compressor frequency of the compressor is adjusted to the target compressor frequency to adjust the humidity of the preset area.
5. The method according to claim 4, characterized in that determining the target compressor frequency corresponding to the difference range includes:

   The target compressor frequency corresponding to the difference range is searched in the preset target compressor frequency data table; the preset target compressor frequency data table stores the corresponding relationship between the target compressor frequency and the difference range.
6. The method according to any one of claims 1 to 5, characterized in that after changing the compressor frequency of the compressor of the variable frequency dehumidifier according to the dew point difference, it further includes:

   Obtain the coil temperature of the evaporator of the variable frequency dehumidifier;

   The compressor frequency of the compressor is adjusted based on the coil temperature.
7. The method of claim 6, wherein adjusting the compressor frequency of the compressor based on the coil temperature includes:

   If the coil temperature is less than or equal to the first preset temperature, reduce the compressor frequency of the compressor; and/or,

   When the coil temperature is less than or equal to the second preset temperature, the compressor frequency of the compressor is adjusted to the preset frequency.
8. A device for controlling a variable frequency dehumidifier, including a processor and a memory storing program instructions, characterized in that the processor is configured to execute any one of claims 1 to 7 when running the program instructions. The method for controlling a variable frequency dehumidifier as described in the item.
9. An electronic device, characterized in that it includes a device main body, and a device for controlling a variable frequency dehumidifier as claimed in claim 9, which is installed on the device main body.
10. A storage medium that stores program instructions, characterized in that when the program instructions are run, the method for controlling a variable frequency dehumidifier as described in any one of claims 1 to 7 is executed.
11. A computer program, when the computer program is executed by a computer, causes the computer to implement the method for controlling a variable frequency dehumidifier as described in any one of claims 1 to 7.
12. A computer program product. The computer program product includes computer instructions stored on a computer-readable storage medium. When the program instructions are executed by a computer, the computer implements any one of claims 1 to 7. Method for controlling variable frequency dehumidifier.

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