Clothes dryer frequency conversion fan control method and system, clothes drying equipment and medium

Abstract

The invention relates to the technical field of household appliances, in particular to a clothes dryer frequency conversion fan control method and system, clothes drying equipment and a medium. The clothes dryer frequency conversion fan control method at least comprises the steps that after a clothes drying program is started, a clothes drying fan operates according to a preset fan rotating speed; monitoring the accumulated running time of the clothes drying fan running according to the preset fan rotating speed in real time; if the accumulative operation duration is larger than a first preset duration, the clothes drying humidity of a clothes drying cylinder is collected; the real-time drying load of the clothes drying cylinder is determined according to the relative size of the clothes drying humidity and the first preset humidity; calculating a target fan rotating speed according to the real-time drying load; and controlling the clothes drying fan to operate according to the target fan rotating speed until drying is finished. The invention provides a method capable of dynamically regulating and controlling the working rotating speed of the clothes drying fan.

Description

Technical Field

[0001] The present application relates to the field of household appliance technology, and in particular to a method and system for controlling a variable frequency fan of a clothes dryer, a clothes drying device, and a medium. Background Art

[0002] The heat pump dryer market has seen rapid growth in recent years. The energy consumption of these products is directly related to their drying efficiency, which in turn is closely linked to the fan speed and the evaporator's heat exchange efficiency. In a heat pump system, the evaporator's structure and cooling efficiency are stable, resulting in a relatively fixed amount of heat absorbed per unit time and the amount of water vapor that can be condensed.

[0003] When a clothes dryer dries a load, the initial moisture content is high. Even with varying loads, the humidity of the air inside the drum remains similar, making it difficult to determine the load quantity based on the humidity. Furthermore, when the initial moisture content is high, the dryer operates for a long period of time. Since the amount of water vapor that can condense in the evaporator per unit time is relatively fixed, the amount of water that can be removed from the load is relatively limited, and the change in humidity within the drum is also minimal. Therefore, it is also difficult to determine the load quantity based on the humidity within this period.

[0004] Throughout the drying process, running the fan too high or too low will reduce drying efficiency. Excessive air velocity shortens the heat exchange time between the air and the evaporator, reducing dehumidification efficiency. Excessive air velocity reduces the heat exchange between the air and the evaporator, leading to incomplete evaporation of the refrigerant in the evaporator, also reducing dehumidification efficiency. During the drying process, if the fan runs at high speed, the inner drum wind resistance is low and the air velocity is high when the load is light, which reduces dehumidification efficiency. If the fan runs at low speed, the inner drum wind resistance is high and the air velocity is low when the load is heavy, which also reduces dehumidification efficiency. Therefore, high fan speed is required for heavy drying loads, while low fan speed is required for light loads. Furthermore, as the drying process continues, the moisture content of the load gradually decreases, making it more difficult for the evaporator to dehumidify. This is especially true in the later stages of drying, when the humidity and dew point of the air leaving the drum are relatively low. Continuing to run the fan at the original speed will result in inadequate heat exchange between the humid air and the evaporator, rapidly diminishing the evaporator's dehumidification capacity.

[0005] In summary, solving the problem of fan speed being too high or too low due to load and the rapid attenuation of evaporator dehumidification capacity in the later stages of drying are unavoidable issues for dryers to improve drying capacity and save energy and reduce consumption.

[0006] Therefore, there is an urgent need for a method that can dynamically control the operating speed of the fan. Summary of the Invention

[0007] In order to solve the above technical problems, embodiments of the present application provide a method, system, drying equipment and medium for controlling a variable frequency fan of a clothes dryer.

[0008] A first aspect of an embodiment of the present application provides a method for controlling a variable frequency fan of a clothes dryer, comprising at least:

[0009] After the drying program is started, the drying fan runs at the preset fan speed;

[0010] real-time monitoring of the cumulative running time of the clothes drying fan at the preset fan speed;

[0011] If the accumulated running time is greater than a first preset time, collecting the clothes drying humidity of the clothes drying drum;

[0012] determining a real-time drying load of the drying drum according to a relative magnitude between the drying humidity and a first preset humidity;

[0013] Calculating a target fan speed based on the real-time drying load;

[0014] The clothes drying fan is controlled to operate at the target fan speed until the drying is completed.

[0015] In an optional embodiment of the present application, determining the real-time drying load of the drying drum according to the relative size of the drying humidity and the first preset humidity includes:

[0016] If the clothes drying humidity is greater than the first preset humidity, determining that the real-time drying load is a preset maximum load;

[0017] If the clothes drying humidity is not greater than the first preset humidity, the real-time drying load is determined to be a preset small load.

[0018] In an optional embodiment of the present application, the calculating the target fan speed according to the real-time drying load includes:

[0019] When the real-time drying load of the clothes drying drum is the preset maximum load, the target fan speed is calculated based on a preset first load correction coefficient according to the real-time drying load and a pre-configured fan speed model;

[0020] When the real-time drying load of the clothes drying drum is the preset small load, the target fan speed is calculated based on the preset second load correction coefficient according to the real-time drying load and the pre-configured fan speed model; wherein, the preset first load correction coefficient is smaller than the preset second load correction coefficient.

[0021] In an optional embodiment of the present application, the fan speed model includes:

[0022]

[0023] Among them, S x Indicates the target fan speed in rpm; K indicates the humidity correction coefficient, ranging from 40 to 70; φ m Indicates the humidity of the dry clothes in %; a is the correction factor, ranging from 1500 to 2200; b is the load correction factor.

[0024] In an optional embodiment of the present application, the first preset load correction coefficient is 0; and / or the second preset load correction coefficient is 200-400.

[0025] A second aspect of the embodiments of the present application provides a variable frequency fan control system for a clothes dryer, comprising at least:

[0026] A detection module is used to collect the drying humidity of the clothes in the drying drum and to monitor in real time the cumulative running time of the clothes drying fan at a preset fan speed;

[0027] a judgment module, signal-connected to the detection module, configured to determine a real-time drying load of the drying drum according to a relative magnitude of the drying humidity and a first preset humidity when the accumulated running time is greater than a first preset time;

[0028] a calculation module, connected to the judgment module by signal, and configured to calculate a target fan speed according to the real-time drying load;

[0029] A control module is respectively connected to the calculation module and the clothes drying fan by signal, and the control module is used to control the clothes drying fan to operate according to the target fan speed until the drying is completed.

[0030] In an optional embodiment of the present application, the calculation module is used to calculate the target fan speed based on a pre-configured fan speed model and the real-time drying load; wherein, the fan speed model is obtained based on historical drying load and historical fan speed simulation training.

[0031] In an optional embodiment of the present application, the detection module at least includes:

[0032] a humidity detection unit, provided in the clothes drying drum and connected to the judgment module by signal, for collecting the clothes drying humidity in the clothes drying drum;

[0033] The duration detection unit is respectively connected to the judgment module and the clothes drying fan signal, and is used to collect the operation duration of the fan at different fan speeds.

[0034] A third aspect of the embodiments of the present application provides a clothes drying device, comprising at least:

[0035] clothes dryer fan;

[0036] The variable frequency fan control system for a clothes dryer as described in any one of the above items is connected to the clothes dryer fan signal, and the variable frequency fan control system for a clothes dryer is used to control the operation of the clothes dryer fan.

[0037] According to a fourth aspect of the embodiments of the present application, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of any of the methods described above are implemented.

[0038] The variable frequency fan control method for a clothes dryer provided in an embodiment of the present application monitors in real time the cumulative operating time of the clothes dryer fan at the preset fan speed. When the cumulative operating time exceeds a first preset time, the clothes drying humidity of the clothes dryer drum is collected. The real-time drying load of the clothes dryer drum is determined based on the relative size of the clothes drying humidity and the first preset humidity. A target fan speed is calculated based on the real-time drying load, and the clothes dryer fan is controlled to operate at the target fan speed until the drying is completed. First, after the clothes dryer fan has been running at the preset fan speed for a certain period of time, the moisture content of the load in the drum is reduced. The real-time drying load used to represent the drying load can be accurately determined based on the humidity in the drum. Then, a target fan speed is calculated to match the load to avoid the problem of reduced drying efficiency caused by the mismatch between the fan speed and the load. At the same time, as the clothes drying humidity decreases, the target fan speed is correspondingly reduced, which can avoid the problem of rapid attenuation of the evaporator's dehumidification capacity in the later stages of drying, thereby improving the drying efficiency of the clothes dryer while reducing the operating energy consumption of the clothes dryer. In summary, the embodiments of the present application provide a method for controlling a variable frequency fan of a clothes dryer, which can dynamically adjust the operating speed of the fan, while reducing the energy consumption of the dryer and improving the working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0040] Figure 1 A flow chart of a variable frequency fan control method for a clothes dryer provided in an embodiment of the present application;

[0041] Figure 2 A flow chart of a variable frequency fan control method for a clothes dryer provided in an embodiment of the present application;

[0042] Figure 3 A flow chart of a variable frequency fan control method for a clothes dryer provided in an embodiment of the present application;

[0043] Figure 4 A schematic diagram of the structure of a variable frequency fan control system for a clothes dryer provided in an embodiment of the present application;

[0044] Figure 5 A schematic diagram of the structure of a variable frequency fan control system for a clothes dryer provided in an embodiment of the present application;

[0045] Figure 6 A schematic diagram of the computer device structure provided in an embodiment of the present application. DETAILED DESCRIPTION

[0046] In the process of realizing this application, the applicant found that there is an urgent need for a method that can dynamically control the operating speed of the fan.

[0047] To address the above issues, embodiments of the present application provide a method, system, drying device, and medium for controlling a variable-frequency fan in a clothes dryer. To further clarify the objectives, technical solutions, and advantages of this application, the following describes in further detail a method, system, drying device, and medium for controlling a variable-frequency fan in a clothes dryer, using embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are intended only to explain this application and are not intended to limit it.

[0048] The solutions in the embodiments of the present application can be implemented in various computer languages, such as the object-oriented programming language Java and the directly interpreted scripting language JavaScript. The serial numbers of the components herein, such as "first" and "second", are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present application, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present application.

[0049] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0050] See Figure 1 and Figure 2 The embodiment of the present application provides a method for controlling a variable frequency fan of a clothes dryer, which includes at least the following steps 101 to 106:

[0051] Step 101: After the clothes drying program is started, the clothes drying fan runs at a preset fan speed;

[0052] The clothes drying fan is a fan used to dry the clothes drying drum and the load in the clothes drying drum. The preset fan speed S1 generally ranges from 2000 to 2600 rpm, which is the half-load operating speed of the clothes drying fan.

[0053] Step 102: monitor in real time the cumulative running time of the clothes drying fan at the preset fan speed;

[0054] Step 103: If the accumulated running time is greater than a first preset time, collect the clothes drying humidity of the clothes drying drum;

[0055] The clothes drying humidity can be the air humidity inside the dryer, the air humidity at the outlet of the dryer, or the clothes humidity inside the dryer. After the drying mode is turned on and the compressor and fan are started, the dryer fan is controlled to continuously run at a preset fan speed, and the accumulated running time is monitored. Simultaneously, the clothes drying humidity of the dryer is collected; for example, the humidity value of the outlet humidity sensor is collected every second, and the average of all humidity values ​​during this period is calculated every second as the clothes drying humidity φm.

[0056] Step 104: determining a real-time drying load of the drying drum according to a relative value between the drying humidity and a first preset humidity;

[0057] The real-time drying load refers to the real-time collected drying humidity and the real-time parameter calculated based on the accumulated running time according to the preset fan speed, and changes with time and drying humidity.

[0058] Step 105: Calculate the target fan speed according to the real-time drying load;

[0059] In the embodiment of the present application, the target fan speed can be calculated based on the real-time drying load and the pre-configured fan speed model. Different real-time drying loads correspond to different model parameters to achieve accurate calculation and matching. The fan speed model is obtained based on historical drying load and historical fan speed simulation training, and may include, for example, humidity influencing factors, temperature influencing factors, and influencing factors corresponding to different loads. These are not exhaustive and can be flexibly configured according to actual conditions. It is only necessary to be able to calculate the target fan speed based on the real-time drying load and the pre-configured fan speed model.

[0060] Step 106: Control the clothes drying fan to operate at the target fan speed until the drying is completed.

[0061] The variable frequency fan control method for a clothes dryer provided in an embodiment of the present application monitors in real time the cumulative operating time of the clothes dryer fan at the preset fan speed. When the cumulative operating time exceeds a first preset time, the clothes drying humidity of the clothes dryer drum is collected. The real-time drying load of the clothes dryer drum is determined based on the relative size of the clothes drying humidity and the first preset humidity. A target fan speed is calculated based on the real-time drying load, and the clothes dryer fan is controlled to operate at the target fan speed until the drying is completed. First, after the clothes dryer fan has been running at the preset fan speed for a certain period of time, the moisture content of the load in the drum is reduced. The real-time drying load used to represent the drying load can be accurately determined based on the humidity in the drum. Then, a target fan speed is calculated to match the load to avoid the problem of reduced drying efficiency caused by the mismatch between the fan speed and the load. At the same time, as the clothes drying humidity decreases, the target fan speed is correspondingly reduced, which can avoid the problem of rapid attenuation of the evaporator's dehumidification capacity in the later stages of drying, thereby improving the drying efficiency of the clothes dryer while reducing the operating energy consumption of the clothes dryer. In summary, the embodiments of the present application provide a method for controlling a variable frequency fan of a clothes dryer, which can dynamically adjust the operating speed of the fan, while reducing the energy consumption of the dryer and improving the working efficiency.

[0062] In an optional embodiment of the present application, the above step 104, determining the real-time drying load of the drying drum according to the relative size of the drying humidity and the first preset humidity, includes the following two cases:

[0063] In a first case, if the clothes drying humidity is greater than the first preset humidity, the real-time drying load is determined to be a preset maximum load;

[0064] In the second case, if the clothes drying humidity is not greater than the first preset humidity, the real-time drying load is determined to be a preset small load.

[0065] The preset maximum load is lower than the preset minimum load, and the first preset humidity φs is a humidity threshold used to distinguish whether the drying load is the preset maximum load or the preset minimum load. The preset maximum load, the preset minimum load, and the first preset humidity φs are all determined based on actual experimental values ​​and historical data. Different models of dryers correspond to different values, and are not specifically limited here. They can be flexibly adjusted according to the specific model of each dryer.

[0066] The embodiment of the present application associates the fan speed with the humidity value of the clothes drying. When the humidity is high, the fan runs at a relatively high speed to ensure efficient heat exchange and dehumidification between the evaporator and the air. When the humidity is low, the fan runs at a relatively low speed to reduce the air flow rate, increase the heat exchange time between the air and the evaporator, and avoid the problem of rapid attenuation of the evaporator's dehumidification capacity. The embodiment of the present application monitors the change in the humidity value of the clothes drying through a humidity detection unit to determine whether the drying load is a preset large load or a preset small load. If it is determined to be the preset large load, the fan speed is increased to solve the problem of small air volume caused by large wind resistance. If it is determined not to be the preset small load, the fan speed is reduced, for example, the fan is operated at a medium or low speed to avoid the problem of large air volume caused by small wind resistance. By dynamically determining the load in real time and adjusting the appropriate fan operating speed, the problem of low drying efficiency caused by the incompatibility between the fan speed and the load weight is avoided.

[0067] See Figure 3 In an optional embodiment of the present application, the above step 105, wherein the target fan speed is calculated based on the real-time drying load, includes the following steps 301-302:

[0068] Step 301: When the real-time drying load of the clothes drying drum is the preset maximum load, the target fan speed is calculated based on a preset first load correction coefficient, the real-time drying load, and a pre-configured fan speed model;

[0069] Step 302: When the real-time drying load of the clothes drying drum is the preset minimum load, the target fan speed is calculated based on a preset second load correction coefficient, the real-time drying load, and the pre-configured fan speed model;

[0070] The preset first load correction coefficient is smaller than the preset second load correction coefficient. The fan speed model has been described in the above embodiment and will not be repeated here. This embodiment uses a smaller first preset load correction coefficient when the real-time drying load is a preset large load, and a larger second preset load correction coefficient when the real-time drying load is a preset small load. This allows the fan speed model to calculate a more accurate and appropriate target fan speed, thereby improving the overall adaptability of the fan drying machine.

[0071] In an optional embodiment of the present application, the fan speed model includes:

[0072]

[0073] Among them, S x Indicates the target fan speed in rpm; K indicates the humidity correction coefficient, ranging from 40 to 70; φ m Indicates the humidity of the dry clothes in %; a is the correction factor, ranging from 1500 to 2200; b is the load correction factor.

[0074] In an optional embodiment of the present application, the first preset load correction coefficient is set to 0; and / or the second preset load correction coefficient is set to 200 to 400. This allows a more accurate and appropriate target fan speed to be calculated using the fan speed model, thereby improving the overall adaptability of the fan drying system.

[0075] In an optional embodiment of the present application, the clothes drying humidity is an average value of the clothes drying drum humidity within a second preset time period.

[0076] The second preset time period may be, for example, 60 seconds or 120 seconds. For example, the humidity detection unit collects the clothes drying humidity of the clothes drying drum once every second, and then calculates the average humidity value within 60 seconds every 60 seconds based on all collected data. The average humidity value is used as the clothes drying humidity, and the clothes drying humidity is sent to the second judgment module for the second judgment module to judge the real-time drying load of the clothes drying drum based on the relative size of the clothes drying humidity and the first preset humidity.

[0077] The drying humidity in the variable frequency fan control method for the clothes dryer provided in the embodiment of the present application is the average value of the humidity of the clothes drying drum within the second preset time period, avoiding calculation errors caused by numerical deviations of the unstable part of the system, thereby improving the accuracy of the real-time drying load and the target fan speed, and further improving the reliability of the variable frequency fan control method for the clothes dryer provided in the embodiment of the present application.

[0078] See Figure 4 One embodiment of the present application provides a dryer variable frequency fan control system, which includes at least: a detection module, a judgment module, a calculation module and a control module, wherein:

[0079] The detection module is used to collect the drying humidity of the clothes in the drying drum and monitor the cumulative running time of the clothes drying fan at the preset fan speed in real time;

[0080] The detection module includes at least a humidity detection unit, such as a humidity sensor, and may also include a temperature sensor, a time detector, etc. Each sensor may be provided separately or integrated into, for example, a chip. The clothes drying humidity may be the real-time humidity, or the average, median, or mode within a set time period. This is not specifically limited here and can be flexibly configured according to actual circumstances.

[0081] The judgment module is signal-connected to the detection module, and is configured to determine the real-time drying load of the drying drum according to the relative size of the drying humidity and the first preset humidity when the accumulated running time is greater than the first preset time;

[0082] The judgment module can be a hardware AND / OR circuit, a software configuration, or other computer program control for performing logical judgment, etc., and this application does not make any specific limitations.

[0083] The calculation module is connected to the judgment module by signal, and the calculation module is used to calculate the target fan speed according to the real-time drying load;

[0084] The computing module can be a chip, an integrated circuit, or a software program integrated into the control module, etc., which is not specifically limited here and can be flexibly configured according to actual conditions.

[0085] The control module is respectively connected to the calculation module and the clothes drying fan by signal, and the control module is used to control the clothes drying fan to operate according to the target fan speed until the drying is completed.

[0086] The control module can be a microcomputer, a computer, a chip, an integrated circuit, or a computer program integrated on the control module, etc., which is not specifically limited here and can be flexibly configured according to actual conditions.

[0087] The variable frequency fan control system for a clothes dryer provided in an embodiment of the present application includes at least: a detection module, a judgment module, a calculation module and a control module. The judgment module determines the real-time drying load of the clothes dryer based on the cumulative running time of the fan at a preset fan speed and the drying humidity. The calculation module calculates the target fan speed based on the real-time drying load and a pre-configured fan speed model. The control module controls the fan to operate at the target fan speed.

[0088] First, after the dryer fan runs at a preset fan speed for a certain period of time, the moisture content of the load in the drum is reduced. The real-time drying load used to characterize the drying load can be accurately determined by the humidity in the drum, and then a target fan speed of the corresponding size is calculated based on the load, avoiding the problem of reduced drying efficiency caused by the mismatch between the fan speed and the load. At the same time, as the humidity of the clothes decreases, the target fan speed decreases accordingly, which can avoid the problem of rapid attenuation of the evaporator's dehumidification capacity in the later stage of drying. While improving the drying efficiency of the dryer, it also reduces the operating energy consumption of the dryer. In summary, the embodiment of the present application provides a fan control system that can dynamically adjust the fan operating speed, while reducing the energy consumption of the dryer and improving working efficiency.

[0089] In an optional embodiment of the present application, the calculation module is used to calculate the target fan speed based on a pre-configured fan speed model and the real-time drying load; wherein, the fan speed model is obtained based on historical drying load and historical fan speed simulation training.

[0090] Please also see Figure 4 and Figure 5 In an optional embodiment of the present application, the detection module at least includes: a humidity detection unit and a duration detection unit, wherein:

[0091] The humidity detection unit is arranged in the clothes drying drum and is connected to the judgment module signal for collecting the clothes drying humidity in the clothes drying drum; as described in the above embodiment, the humidity detection unit can be arranged in the clothes drying drum or at the outlet of the clothes drying drum, and the embodiment of the present application does not make specific limitations.

[0092] The duration detection unit is connected to the judgment module and the clothes drying fan signal, respectively, and is used to collect the operating time of the fan at different fan speeds. The duration detection unit can be a clock chip or a timer, etc., and is not specifically limited in this embodiment of the application. It can be flexibly configured according to actual conditions, as long as it can detect the operating time of the fan at different speeds.

[0093] The judgment module detects the drying humidity of the dryer according to the humidity detection unit, and the operating time of the fan at different speeds detected by the duration detection unit. The data timeliness is higher, so that the timeliness of determining the real-time drying load of the dryer according to the changes in the operating time and the drying humidity is higher, and then the target fan speed calculated according to the real-time drying load is more matched with the actual drying degree, and the adaptability is higher, further solving the problem of low drying efficiency caused by the incompatibility between the fan speed and the load, improving the overall working efficiency of the fan, and reducing the energy consumption of the dryer.

[0094] Please continue to see Figure 5In an optional embodiment of the present application, the judgment module includes: a first judgment module and a second judgment module, wherein:

[0095] The first judgment module is signal-connected to the humidity detection unit and the duration detection unit respectively, and the first judgment module is used to judge whether the accumulated running time is greater than a first preset time;

[0096] The second judgment module is signal-connected to the first judgment module and the calculation module respectively. The second judgment module is used to judge the real-time drying load of the drying drum according to the relative size of the drying humidity and the first preset humidity when the accumulated running time is greater than the first preset time.

[0097] The first preset time length Ts is the judgment threshold for the cumulative time the fan runs at the preset fan speed, which is generally in the range of 40 to 60 minutes. The first judgment module and the second judgment module can be hardware AND / OR circuits, software configurations, or other computer program controls for performing logical judgments, etc., and this application does not make specific limitations. The second judgment module is used to determine whether the drying humidity φm values ​​within the second preset time length (for example, the last few minutes) are all greater than the first preset humidity based on the drying humidity φm values ​​sent by the detection module after determining that the first cumulative running time of the fan at the preset fan speed is greater than the first preset time length. If so, it is determined that the drying load is the preset large load. Otherwise, it is determined that the drying load is the preset small load, and the judgment result is transmitted to the calculation module.

[0098] One embodiment of the present application provides a clothes drying device, comprising at least:

[0099] clothes dryer fan;

[0100] The variable frequency fan control system for a clothes dryer as described in any one of the above items is connected to the clothes dryer fan signal, and the variable frequency fan control system for a clothes dryer is used to control the operation of the clothes dryer fan.

[0101] The beneficial effects of the variable frequency fan control system for the clothes dryer have been described in detail in the above embodiments and will not be repeated here. The embodiments of the present application provide a clothes drying device that can dynamically adjust the fan speed while reducing the energy consumption of the clothes dryer and improving the working efficiency.

[0102] It should be understood that, although the various steps in the flowchart are shown in sequence as indicated by the arrows, these steps are not necessarily performed in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps may be performed in other orders. Moreover, at least a portion of the steps in the figure may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily performed at the same time, but may be performed at different times. The execution order of these sub-steps or stages is not necessarily to be performed in sequence, but may be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0103] In one embodiment, a computer device is provided, wherein the internal structure diagram of the computer device can be as follows: Figure 6 As shown. The computer device includes a processor, a memory, a network interface and a database connected via a system bus. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store data. The network interface of the computer device is used to communicate with an external terminal via a network connection. When the computer program is executed by the processor, it implements a dryer variable frequency fan control method as described above. It includes: a memory and a processor, the memory stores a computer program, and when the processor executes the computer program, it implements any step in the dryer variable frequency fan control method as described above.

[0104] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, any step in the above-mentioned method for controlling a variable frequency fan of a clothes dryer can be implemented.

[0105] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0106] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0107] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0108] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 The steps for the function specified in one or more boxes.

[0109] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0110] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A method for controlling a variable frequency fan of a clothes dryer, characterized in that: At least: After the drying program is started, the drying fan runs at the preset fan speed; real-time monitoring of the cumulative running time of the clothes drying fan at the preset fan speed; If the accumulated running time is greater than a first preset time, collecting the clothes drying humidity of the clothes drying drum; determining a real-time drying load of the drying drum according to a relative magnitude between the drying humidity and a first preset humidity; Calculating a target fan speed based on the real-time drying load; The clothes drying fan is controlled to operate at the target fan speed until the drying is completed.

2. The method for controlling a variable frequency fan of a clothes dryer according to claim 1, wherein: The determining of the real-time drying load of the drying drum according to the relative size of the drying humidity and the first preset humidity includes: If the clothes drying humidity is greater than the first preset humidity, determining that the real-time drying load is a preset maximum load; If the clothes drying humidity is not greater than the first preset humidity, the real-time drying load is determined to be a preset small load.

3. The method for controlling a variable frequency fan of a clothes dryer according to claim 2, wherein: The calculating the target fan speed according to the real-time drying load includes: When the real-time drying load of the clothes drying drum is the preset maximum load, the target fan speed is calculated based on a preset first load correction coefficient according to the real-time drying load and a pre-configured fan speed model; When the real-time drying load of the clothes drying drum is the preset small load, the target fan speed is calculated based on the preset second load correction coefficient according to the real-time drying load and the pre-configured fan speed model; wherein, the preset first load correction coefficient is smaller than the preset second load correction coefficient.

4. The method for controlling a variable frequency fan of a clothes dryer according to claim 3, wherein: The fan speed model includes: Among them, S x Indicates the target fan speed in rpm; K indicates the humidity correction coefficient, ranging from 40 to 70; φ m Indicates the humidity of the dry clothes in %; a is the correction factor, ranging from 1500 to 2200; b is the load correction factor.

5. The method for controlling a variable frequency fan of a clothes dryer according to claim 4, wherein: The first preset load correction coefficient is set to 0; and / or the second preset load correction coefficient is set to 200-400.

6. A variable frequency fan control system for a clothes dryer, characterized in that: At least: A detection module is used to collect the drying humidity of the clothes in the drying drum and to monitor in real time the cumulative running time of the clothes drying fan at a preset fan speed; a judgment module, signal-connected to the detection module, configured to determine a real-time drying load of the drying drum according to a relative magnitude of the drying humidity and a first preset humidity when the accumulated running time is greater than a first preset time; a calculation module, connected to the judgment module by signal, and configured to calculate a target fan speed according to the real-time drying load; A control module is respectively connected to the calculation module and the clothes drying fan by signal, and the control module is used to control the clothes drying fan to operate according to the target fan speed until the drying is completed.

7. The variable frequency fan control system for a clothes dryer according to claim 6, characterized in that: The calculation module is used to calculate the target fan speed based on a pre-configured fan speed model and the real-time drying load; wherein the fan speed model is obtained by simulation training based on historical drying load and historical fan speed.

8. The variable frequency fan control system for a clothes dryer according to claim 6, characterized in that: The detection module at least includes: a humidity detection unit, provided in the clothes drying drum and connected to the judgment module by signal, for collecting the clothes drying humidity in the clothes drying drum; The duration detection unit is respectively connected to the judgment module and the clothes drying fan signal, and is used to collect the operation duration of the fan at different fan speeds.

9. A clothes drying device, characterized in that: At least: clothes dryer fan; The variable frequency fan control system for a clothes dryer according to any one of claims 6 to 8 is connected to the clothes dryer fan signal, and the variable frequency fan control system for a clothes dryer is used to control the operation of the clothes dryer fan.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 5 are implemented.

Images