A drying mode control method of a dehumidifier

Abstract

The application discloses a clothes drying mode control method of a dehumidifier. In order to overcome the problems of poor drying effect and low efficiency of constant air drying for clothes objects in different positions which need to be dried in the prior art, the application comprises the following steps: S1: starting the clothes drying mode, and adjusting the air outlet to the corresponding position according to the clothes position; S2: the dehumidifier detects environmental temperature, air outlet temperature and environmental humidity information, compares the humidity threshold value, determines the working strategy of the compressor and the fan in the clothes drying mode and the strategy execution time, and executes the corresponding strategy execution time; S3: detecting the environmental humidity change amount in the strategy execution time, and adjusting the humidity threshold value according to the environmental humidity change amount; S4: returning to step S2 to redetermine the working strategy of the dehumidifier. According to the collected environmental data and the clothes position, the working strategy of the dehumidifier in the clothes drying mode is determined, the clothes drying efficiency of the dehumidifier is improved, and the energy consumption is reduced.

Description

Technical Field

[0001] This invention relates to the field of dehumidifier technology, and in particular to a method for controlling the drying mode of a dehumidifier. Background Technology

[0002] Currently, dehumidifiers are used in an increasingly wide range of applications. Dehumidifiers remove moisture from the air to reduce humidity. Many high-end dehumidifiers use inverter technology and also have a clothes drying function. The clothes drying function is achieved by keeping the dehumidifier in dehumidification mode while controlling the fan to rotate at high speed. The fan carries the moisture from the clothes into the air. The refrigerant, compressed by the compressor, is condensed in the condenser and then sent to the evaporator. The refrigerant evaporates in the evaporator to absorb external heat, and the moisture in the air flowing through the evaporator is condensed, thereby reducing the humidity of the air and clothes, achieving the clothes drying function.

[0003] The difference between the clothes drying function and the regular dehumidification function is that the clothes drying function has a specific target, and the amount of airflow and heat required by the dehumidifier to dry the clothes varies depending on the placement of the clothes, such as their distance from the dehumidifier and the height of the clothes. Therefore, the airflow and heat of the dehumidifier need to be well controlled to achieve a more efficient clothes drying function.

[0004] In related technologies, existing dehumidifiers generally use a constant airflow and dry clothes by setting a drying time. For example, a "control method for a dehumidifier" disclosed in Chinese patent literature, publication number CN111720905A, includes recording a first cumulative operating time of the compressor during a first operating phase. When the first cumulative operating time reaches a first set time, the compressor enters a second operating phase, during which a second cumulative operating time of the compressor is recorded, and the ambient humidity value is continuously checked to see if it is greater than a first set humidity value. If the ambient humidity value is less than the first set humidity value during the second cumulative operating time, the compressor stops. This solution uses a constant airflow by setting the dehumidifier's operating time, which is unlikely to achieve good drying results for clothes in different locations. Summary of the Invention

[0005] This invention primarily addresses the problem of poor drying effect and low efficiency in existing technologies when using constant airflow to dry clothes in different locations. It provides a method for controlling the drying mode of a dehumidifier, which determines the dehumidifier's operating strategy in drying mode based on collected environmental data and the location of the clothes, thereby improving the drying efficiency of the dehumidifier and reducing energy consumption.

[0006] The above-mentioned technical problems of the present invention are mainly solved by the following technical solutions:

[0007] A method for controlling the drying mode of a dehumidifier includes the following steps:

[0008] S1: When the clothes are within the drying range of the dehumidifier and a drying mode start command is received, the drying mode is activated, and the air outlet is adjusted to the corresponding position according to the position of the clothes.

[0009] S2: The dehumidifier detects ambient temperature, outlet air temperature and ambient humidity information, compares them with the set humidity threshold, and determines the working strategy of the compressor and fan in the drying mode and the execution time of the strategy.

[0010] S3: After the corresponding strategy execution time has elapsed, detect and report the change in ambient humidity during the strategy execution time, and adjust the humidity threshold according to the change in ambient humidity.

[0011] S4: Return to step S2 to redetermine the dehumidifier's operating strategy.

[0012] This solution determines the dehumidifier's operating strategy in drying mode based on collected environmental data and the location of the clothes, thereby improving the drying efficiency of the dehumidifier and reducing energy consumption.

[0013] Preferably, the hinge at the dehumidifier's air outlet is equipped with a linear scanning infrared device, capable of acquiring the distance between objects in the direction the hinge faces and the dehumidifier. Upon startup, the dehumidifier's initialization process includes the hinge at the air outlet repeatedly opening and closing from its minimum to its maximum opening and back to its minimum opening. During this initial opening and closing process, the linear scanning infrared device acquires information about the relative distance between the clothes in front of the dehumidifier and the height of the clothes.

[0014] Preferably, step S1 includes the following process:

[0015] S101: Determine whether the dehumidifier has received a drying mode start command. If so, determine the drying range; otherwise, enter dehumidification mode.

[0016] S102: The distance data at each hinge angle is obtained by an infrared sensor installed at the air outlet hinge of the dehumidifier, and the relative distance between the dehumidifier and the clothes and the height of the clothes are calculated.

[0017] S103: After calculating the relative distance between the clothes and the dehumidifier, determine whether the calculated relative distance is within the drying distance range set by the dehumidifier. If so, start the drying mode; otherwise, indicate that no clothes are detected within the drying range and return to step S101.

[0018] S104: Determine the minimum height of the clothing based on the hinge angle when the infrared sensor detects the clothing, and set the hinge angle range at the air outlet based on the minimum height of the clothing.

[0019] The location of the clothes is determined during the initialization process, so the air outlet angle of the dehumidifier can be set accordingly to improve the drying efficiency of the clothes.

[0020] Preferably, the relative distance between the clothes and the dehumidifier is calculated using distance information obtained from a linear scanning infrared device and the opening and closing angle of the hinge. The specific calculation process is as follows:

[0021] D = L * cosθ;

[0022] Where D is the relative distance between the clothes and the dehumidifier;

[0023] L represents the distance information acquired by the linear scanning device;

[0024] θ is the hinge angle corresponding to the distance information acquired by the linear scanning device.

[0025] Preferably, the relative distances at each moment are calculated based on the hinge angle and the distance information obtained by the corresponding linear scanning device. The average of all relative distances is then taken as the relative distance between the clothes and the dehumidifier. The specific calculation process is as follows:

[0026] D i =L i *cosθ i

[0027]

[0028] Among them, D i Let be the relative distance between the clothes and the dehumidifier calculated at time i.

[0029] L i The distance information acquired by the linear scanning device at time i;

[0030] θ i Let be the hinge angle corresponding to the distance information acquired by the linear scanning device at time i.

[0031] N is the total number of moments during the initial opening and closing process of the hinge;

[0032] This is the average of all calculated relative distances.

[0033] Preferably, the hinge angle range at the air outlet is defined as the range of opening and closing angles within which clothing can be detected during the hinge opening and closing process.

[0034] Preferably, if the hinge at the air outlet is already open to its maximum angle when the lowest height of the clothes is detected, then the maximum angle of the hinge is used as the air outlet angle for the drying mode.

[0035] If clothing is detected at the minimum angle of the hinge at the air outlet, the set minimum air outlet angle is taken as the minimum air outlet angle of the air outlet in the drying mode. The hinge angle range at the air outlet is defined as the opening and closing angle at which clothing can be detected when the hinge is greater than the minimum air outlet angle.

[0036] As a preferred option, the dehumidifier collects environmental information, including ambient temperature and humidity, as well as the outlet air temperature.

[0037] The system compares the collected ambient humidity with the set humidity threshold. If the ambient humidity is less than or equal to the humidity threshold, it determines that the clothes have been dried and switches to dehumidification mode.

[0038] If the ambient humidity is greater than the humidity threshold, the operating strategy of the compressor and fan is calculated based on the ambient temperature, ambient humidity and outlet temperature information.

[0039] As a preferred option, the specific planning process for the work strategy is as follows:

[0040] A1: Determine the strategy execution time based on the humidity difference between ambient humidity and humidity threshold.

[0041] A2: Formulate compressor operating strategies based on the temperature difference between the outlet air temperature and the ambient temperature and the corresponding threshold.

[0042] A3: Develop the fan's operating strategy based on the compressor's start / stop status and outlet air temperature.

[0043] As a preferred option, set the default strategy execution time to t0; calculate the humidity difference Δw:

[0044] Δw=w e -w s

[0045] Among them, w e The collected environmental humidity data;

[0046] w s The set humidity threshold;

[0047] Then, the strategy execution time t d for:

[0048]

[0049] Where, Δw max This is the maximum humidity difference threshold that is set.

[0050] Preferably, the environmental humidity change Δw is obtained after the corresponding strategy execution time. t ;

[0051] Based on the change in ambient humidity Δw during the strategy execution time t Adjust humidity threshold w s :

[0052]

[0053] Among them, w′ s The adjusted humidity threshold;

[0054] Δw cmin The minimum threshold for humidity variation is set.

[0055] Δw cmax This is the maximum threshold for humidity variation.

[0056] The beneficial effects of this invention are:

[0057] 1. Based on the collected environmental data and the location of the clothes, determine the dehumidifier's working strategy in drying mode to improve the drying efficiency of the dehumidifier and reduce energy consumption.

[0058] 2. During the initialization process, the location of the clothes is determined, thereby allowing the dehumidifier's air outlet angle to be set accordingly, improving the efficiency of drying clothes.

[0059] 3. Adjust the humidity threshold based on the humidity change value after the execution strategy feedback, thereby adjusting the execution time of each strategy. This avoids reducing the drying efficiency of clothes due to the same strategy being executed for too long, and also avoids increasing energy consumption due to frequent adjustments to the execution strategy. Attached Figure Description

[0060] Figure 1 This is a flowchart of the clothes drying mode control method of the dehumidifier of the present invention.

[0061] Figure 2 This is a flowchart illustrating the specific working strategy of this invention. Detailed Implementation

[0062] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0063] Example:

[0064] This embodiment provides a method for controlling the drying mode of a dehumidifier, such as... Figure 1 As shown, it includes the following steps:

[0065] S1: When the clothes are within the drying range of the dehumidifier and a drying mode start command is received, the drying mode is activated, and the air outlet is adjusted to the corresponding position according to the position of the clothes.

[0066] S101: Determine whether the dehumidifier has received a drying mode start command. If so, determine the drying range; otherwise, enter dehumidification mode.

[0067] In this embodiment, the dehumidification mode involves starting the compressor and fan according to a set program until the set humidity range is reached. This embodiment mainly involves the working control method in the clothes drying mode, and the conventional dehumidification mode will not be described in detail.

[0068] S102: The distance data at each hinge angle is obtained by an infrared sensor installed at the air outlet hinge of the dehumidifier, and the relative distance between the dehumidifier and the clothes and the height of the clothes are calculated.

[0069] In this embodiment, a linear scanning infrared device is installed on the hinge at the air outlet of the dehumidifier, which can obtain the distance between the object in the forward direction of the hinge and the dehumidifier.

[0070] When this implementation scheme is executed, the dehumidifier is moved near the clothes to be dried. After the dehumidifier is turned on, the dehumidifier initializes, including the hinge at the air outlet opening and closing back and forth from the minimum opening to the maximum opening and back to the minimum opening. During the initial back and forth opening and closing process, the linear scanning infrared device can obtain the relative distance between the clothes in front and the dehumidifier, as well as the height information of the clothes.

[0071] Specifically, the relative distance between the clothes and the dehumidifier can be calculated using distance information obtained from a linear scanning infrared device and the opening angle of the hinge. The specific calculation process is as follows:

[0072] D = L * cosθ;

[0073] Where D is the relative distance between the clothes and the dehumidifier;

[0074] L represents the distance information acquired by the linear scanning device;

[0075] θ is the hinge angle corresponding to the distance information acquired by the linear scanning device.

[0076] Furthermore, the relative distances calculated at each hinge angle and the corresponding distances obtained by the linear scanning device are used to obtain the relative distances at each time point. The average of all relative distances is then taken as the relative distance between the clothes and the dehumidifier. The specific calculation process is as follows:

[0077] D i =L i *cosθ i

[0078]

[0079] Among them, D i Let be the relative distance between the clothes and the dehumidifier calculated at time i.

[0080] L i The distance information acquired by the linear scanning device at time i;

[0081] θ i Let be the hinge angle corresponding to the distance information acquired by the linear scanning device at time i.

[0082] N is the total number of moments during the initial opening and closing process of the hinge;

[0083] This is the average of all calculated relative distances.

[0084] S103: After calculating the relative distance between the clothes and the dehumidifier, determine whether the calculated relative distance is within the drying distance range set by the dehumidifier. If so, start the drying mode; otherwise, indicate that no clothes are detected within the drying range and return to step S101.

[0085] S104: Determine the minimum height of the clothing based on the hinge angle when the infrared sensor detects the clothing, and set the hinge angle range at the air outlet based on the minimum height of the clothing.

[0086] The hinge angle range at the air outlet is defined as the range of opening and closing angles within which clothing can be detected during the opening and closing process.

[0087] If the hinge at the air outlet is already open to its maximum angle when the lowest height of the clothes is detected, then the maximum angle of the hinge will be used as the air outlet angle for the drying mode.

[0088] If clothing is detected at the minimum angle of the hinge at the air outlet, the set minimum air outlet angle is taken as the minimum air outlet angle of the air outlet in the drying mode. The hinge angle range at the air outlet is defined as the opening and closing angle at which clothing can be detected when the hinge is greater than the minimum air outlet angle.

[0089] Furthermore, by narrowing the hinge angle range to the rated parameters, the final air outlet angle range is obtained.

[0090] Adjust the air outlet angle to the set air outlet angle range.

[0091] S2: The dehumidifier detects ambient temperature, outlet air temperature and ambient humidity information, compares them with the set humidity threshold, and determines the working strategy of the compressor and fan in the drying mode and the strategy execution time.

[0092] The dehumidifier collects environmental information, including ambient temperature and humidity, as well as the outlet air temperature.

[0093] The system compares the collected ambient humidity with the set humidity threshold. If the ambient humidity is less than or equal to the humidity threshold, it determines that the clothes have been dried and switches to dehumidification mode.

[0094] If the ambient humidity is greater than the humidity threshold, the operating strategy of the compressor and fan is calculated based on the ambient temperature, ambient humidity and outlet temperature information.

[0095] Specific operating strategies include the compressor's start / stop status and operating power, the fan's wind speed and force, and the execution time of the strategy. For example... Figure 2 As shown, the specific planning process for the work strategy is as follows:

[0096] A1: Determine the strategy execution time based on the humidity difference between the ambient humidity and the humidity threshold.

[0097] Set the default strategy execution time t0; calculate the humidity difference Δw;

[0098] Δw=w e -w s

[0099] Among them, w e The collected environmental humidity data;

[0100] w s The set humidity threshold.

[0101] Then, the strategy execution time t d for:

[0102]

[0103] Where, Δw max This is the maximum humidity difference threshold that is set.

[0104] A2: Formulate compressor operating strategies based on the temperature difference between the outlet air temperature and the ambient temperature and the corresponding threshold.

[0105] After the compressor has been running for its rated time, calculate the temperature difference between the air temperature and the ambient temperature.

[0106] When the temperature difference between the outlet air temperature and the ambient temperature is less than or equal to the set temperature difference threshold, the compressor stops working;

[0107] When the temperature difference between the outlet air temperature and the ambient temperature exceeds the set temperature difference threshold, the compressor will start working.

[0108] The compressor's operating power control method is as follows:

[0109] When the compressor is working, determine whether the opening degree of the expansion valve is the preset minimum opening degree:

[0110] If the opening of the expansion valve is greater than the preset minimum opening, then the opening of the expansion valve is reduced until the opening of the expansion valve is reduced to the preset minimum opening.

[0111] If the expansion valve opening is the preset minimum opening, then it is further determined whether the compressor operating frequency is the preset maximum frequency.

[0112] If the compressor's operating frequency is less than the preset maximum frequency, the compressor's operating frequency will be increased until it reaches the preset maximum frequency.

[0113] If the operating frequency of the compressor is the preset maximum frequency, then the operating frequency of the compressor of the dehumidifier and the opening degree of the expansion valve remain unchanged.

[0114] A3: Develop the fan's operating strategy based on the compressor's start / stop status and outlet air temperature.

[0115] If the compressor is stopped, the fan will output air at its maximum force.

[0116] When the compressor is stopped, it means that the difference between the ambient temperature and the outlet air temperature is not large, and the clothes are dried by relying on the ambient temperature, so the outlet air force reaches its maximum.

[0117] If the compressor is on, the air outlet temperature is further compared with the set temperature threshold.

[0118] If the outlet air temperature is greater than or equal to the set temperature threshold, the fan will operate at minimum airflow.

[0119] If the outlet air temperature is lower than the set temperature threshold, the fan will operate at maximum airflow.

[0120] S3: After the corresponding strategy execution time has elapsed, detect and report the change in ambient humidity during the strategy execution time, and adjust the humidity threshold according to the change in ambient humidity.

[0121] The change in ambient humidity Δw during the corresponding strategy execution time is obtained. t .

[0122] Based on the change in ambient humidity Δw during the strategy execution time t Adjust humidity threshold w s :

[0123]

[0124] Among them, w′ s The adjusted humidity threshold;

[0125] Δw cmin The minimum threshold for humidity variation is set.

[0126] Δw cmax This is the maximum threshold for humidity variation.

[0127] S4: Return to step S2 to redetermine the dehumidifier's operating strategy.

[0128] The proposed solution determines the dehumidifier's operating strategy in drying mode based on collected environmental data and the location of the clothes, thereby improving the drying efficiency of the dehumidifier and reducing energy consumption.

[0129] It should be understood that the embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A method for controlling the drying mode of a dehumidifier, characterized in that, Includes the following steps: S1: When the clothes are within the drying range of the dehumidifier and a drying mode start command is received, the drying mode is activated, and the air outlet is adjusted to the corresponding position according to the position of the clothes. S2: The dehumidifier detects ambient temperature, outlet air temperature and ambient humidity information, compares them with the set humidity threshold, and determines the working strategy of the compressor and fan in the drying mode and the execution time of the strategy. The specific planning process for the work strategy is as follows: A1: Determine the strategy execution time based on the humidity difference between ambient humidity and humidity threshold. A2: Formulate compressor operating strategies based on the temperature difference between the outlet air temperature and the ambient temperature and the corresponding threshold. A3: Develop the fan's operating strategy based on the compressor's start / stop status and outlet air temperature; S3: After the corresponding strategy execution time has elapsed, detect the change in ambient humidity during the strategy execution time and adjust the humidity threshold according to the change in ambient humidity. S4: Return to step S2 to redetermine the dehumidifier's operating strategy.

2. The method for controlling the drying mode of a dehumidifier according to claim 1, characterized in that, The dehumidifier is equipped with a linear scanning infrared device on the hinge at the air outlet, which can obtain the distance between the object in front of the hinge and the dehumidifier; after the dehumidifier is turned on, the dehumidifier initializes its program, which includes the back-and-forth opening and closing of the hinge at the air outlet from the minimum opening to the maximum opening and back to the minimum opening.

3. A method for controlling the drying mode of a dehumidifier according to claim 1 or 2, characterized in that, Step S1 includes the following process: S101: Determine whether the dehumidifier has received a drying mode start command. If so, determine the drying range; otherwise, enter dehumidification mode. S102: The distance data at each hinge angle is obtained by an infrared sensor installed at the air outlet hinge of the dehumidifier, and the relative distance between the dehumidifier and the clothes and the height of the clothes are calculated. S103: After calculating the relative distance between the clothes and the dehumidifier, determine whether the calculated relative distance is within the drying distance range set by the dehumidifier. If so, start the drying mode; otherwise, indicate that no clothes are detected within the drying range and return to step S101. S104: Determine the minimum height of the clothing based on the hinge angle when the infrared sensor detects the clothing, and set the hinge angle range at the air outlet based on the minimum height of the clothing.

4. The method for controlling the drying mode of a dehumidifier according to claim 3, characterized in that, The relative distance between the clothes and the dehumidifier is calculated using distance information obtained from a linear scanning infrared device and the opening angle of the hinge. The specific calculation process is as follows: D = L * cosθ; Where D is the relative distance between the clothes and the dehumidifier; L represents the distance information acquired by the linear scanning device; θ is the hinge angle corresponding to the distance information acquired by the linear scanning device.

5. The method for controlling the drying mode of a dehumidifier according to claim 3, characterized in that, The hinge angle range at the air outlet is defined as the range of opening and closing angles within which clothing can be detected during the opening and closing process.

6. A method for controlling the drying mode of a dehumidifier according to claim 5, characterized in that, If the hinge at the air outlet is already open to its maximum angle when the lowest height of the clothes is detected, then the maximum angle of the hinge will be used as the air outlet angle for the drying mode. If clothing is detected at the minimum hinge angle at the air outlet, the set minimum air outlet angle is taken as the minimum air outlet angle for the drying mode. The hinge angle range at the air outlet is defined as the opening and closing angle at which clothing can be detected when the hinge angle is greater than the minimum air outlet angle.

7. The method for controlling the drying mode of a dehumidifier according to claim 1, characterized in that, The dehumidifier collects environmental information, including ambient temperature and humidity, as well as the outlet air temperature. The system compares the collected ambient humidity with the set humidity threshold. If the ambient humidity is less than or equal to the humidity threshold, it determines that the clothes have been dried and switches to dehumidification mode. If the ambient humidity is greater than the humidity threshold, the operating strategy of the compressor and fan is calculated based on the ambient temperature, ambient humidity and outlet temperature information.

8. A method for controlling the drying mode of a dehumidifier according to claim 1, characterized in that, Set the default policy execution time Calculate the humidity difference : in, The collected environmental humidity data; The set humidity threshold; Then, the strategy execution time for: in, This is the maximum humidity difference threshold that is set.

9. A method for controlling the drying mode of a dehumidifier according to claim 1, characterized in that, The execution process is completed within the specified timeframe, and the change in ambient humidity during that time is obtained. ; Based on the change in ambient humidity during the strategy execution time Adjust humidity threshold : in, The adjusted humidity threshold; The minimum threshold for humidity variation is set. This is the maximum threshold for humidity variation.

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