Control method and control system of clothes dryer, and clothes dryer

Abstract

This invention provides a control method, control system, and dryer for a clothes dryer. The method includes: detecting the real-time wind speed at the air inlet of the dryer; obtaining the target wind speed at the air inlet of the dryer; and adjusting the fan speed of the dryer according to the target wind speed and the real-time wind speed. This solves the technical problem in the prior art where changes in the internal and external environment of the dryer cause changes in the real-time wind speed at the air inlet, resulting in low drying performance.

Description

Technical Field

[0001] This invention relates to the field of smart home appliances, specifically to a control method, a control system, and a clothes dryer. Background Art

[0002] Current dryers on the market all use a weighing method to compare the weight of clothes before and after drying to test the moisture content of the clothes, and then control the fan to generate airflow at the air inlet, thereby achieving the effect of drying clothes.

[0003] It should be noted that, on the one hand, the fan speed of existing dryers is often fixed, which cannot be better adjusted according to the moisture content (humidity) of the clothes, resulting in excessive power consumption. On the other hand, changes in the internal and external environment of the dryer often cause the air speed at the air inlet of the dryer to be different from the standard air speed, resulting in poor drying performance.

[0004] In view of this, the present invention is hereby proposed. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a control method, control system and dryer for clothes dryers, so as to solve the technical problem that changes in the internal and external environment of the dryer cause changes in the real-time wind speed at the air inlet, resulting in low drying performance.

[0006] According to a first aspect of the present invention, a control method for a clothes dryer is provided, comprising: detecting a real-time wind speed at the air inlet of the clothes dryer; acquiring a target wind speed at the air inlet of the clothes dryer; and adjusting the fan speed of the clothes dryer according to the target wind speed and the real-time wind speed.

[0007] Furthermore, before detecting the real-time wind speed at the dryer's air inlet, the method further includes: detecting the humidity inside the dryer; determining a target fan speed associated with the humidity and a target wind speed at the dryer's air inlet based on the humidity; and controlling the dryer's fan to operate according to the target fan speed.

[0008] Further, determining the target fan speed associated with the humidity based on the humidity includes: determining a first target fan speed associated with the humidity when the humidity exceeds a preset humidity; and determining a second target fan speed associated with the humidity when the humidity does not exceed the preset humidity, wherein the first target fan speed is greater than the second target fan speed.

[0009] Furthermore, adjusting the fan speed of the dryer according to the target wind speed and the real-time wind speed includes: controlling the real-time rotation speed of the fan to decrease when the real-time wind speed is greater than the target wind speed; controlling the real-time rotation speed of the fan to increase when the real-time wind speed is less than the target wind speed; and controlling the fan to maintain the target rotation speed when the real-time wind speed is equal to the target wind speed.

[0010] Furthermore, the real-time rotational speed of the fan is controlled to decrease or increase, so that the real-time wind speed is equal to the target wind speed.

[0011] According to a second aspect of the present invention, a control system for a clothes dryer is provided, comprising: a wind speed sensor for detecting real-time wind speed at the air inlet of the clothes dryer; and a controller for acquiring a target wind speed at the air inlet of the clothes dryer and adjusting the fan speed of the clothes dryer according to the target wind speed and the real-time wind speed.

[0012] Furthermore, the control system also includes: a humidity sensor for detecting the humidity inside the dryer and sending it to the controller; the controller is also used to determine the target fan speed associated with the humidity and the target wind speed at the air inlet of the dryer based on the humidity, and control the fan of the dryer to operate according to the target fan speed.

[0013] Furthermore, the controller is characterized in that, when the humidity exceeds a preset humidity, the controller is further configured to determine a first target fan speed associated with the humidity; and when the humidity does not exceed the preset humidity, the controller is further configured to determine a second target fan speed associated with the humidity, wherein the first target fan speed is greater than the second target fan speed.

[0014] Furthermore, when the real-time wind speed is greater than the target wind speed, the controller is also used to control the reduction of the real-time rotational speed of the fan; when the real-time wind speed is less than the target wind speed, the controller is also used to control the increase of the real-time rotational speed of the fan; when the real-time wind speed is equal to the target wind speed, the controller is also used to control the fan to maintain the target rotational speed of the fan.

[0015] According to a third aspect of the invention, a clothes dryer is provided, comprising the control system of any of the above.

[0016] This invention provides a control method, control system, and dryer for a clothes dryer. The method includes: detecting the real-time wind speed at the air inlet of the dryer; obtaining the target wind speed at the air inlet of the dryer; and adjusting the fan speed of the dryer according to the target wind speed and the real-time wind speed. This solves the technical problem in the prior art where changes in the internal and external environment of the dryer cause changes in the real-time wind speed at the air inlet, resulting in low drying performance. Attached Figure Description

[0017] Figure 1 This is a flowchart of the control method for a clothes dryer provided in an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of a clothes dryer with a wind speed sensor provided in an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of a clothes dryer with a humidity sensor provided in an embodiment of the present invention;

[0020] Figure 4 This is a flowchart of an optional control method for a clothes dryer provided in an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the control system of the clothes dryer provided in an embodiment of the present invention. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0023] To effectively solve the above problems, the present invention provides a control method and device for an air conditioner, which will be described in detail below.

[0024] Example 1

[0025] According to an embodiment of the present invention, a control method for a clothes dryer is provided, combined with Figure 1 ,include:

[0026] Step S12: Detect the real-time wind speed at the dryer's air inlet.

[0027] Specifically, in this solution, the controller of the clothes dryer can be used as the execution subject of the method in this embodiment. In this embodiment, combined with Figure 2 A wind speed sensor F can be installed at the air inlet of the dryer to detect the real-time wind speed at the air inlet when the dryer is in operation.

[0028] Step S13: Obtain the target wind speed at the air inlet of the dryer.

[0029] Specifically, the target wind speed mentioned above is the target wind speed at the air inlet of the dryer that the dryer needs to achieve during operation. It can also be understood as the standard wind speed that needs to be achieved at the air inlet after the dryer controls the fan to rotate during operation. It should be noted that the target wind speed at the air inlet is not necessarily the same as the actual real-time wind speed at the air inlet. This is because the internal and external environmental factors of the dryer will change. This change will cause the air inlet wind speed to be different even if the dryer fan rotates at the same speed.

[0030] Step S15: Adjust the fan speed of the dryer according to the target wind speed and the real-time wind speed.

[0031] Specifically, this solution can compare the target wind speed with the real-time wind speed, and adjust the fan speed of the dryer in real time according to the comparison result, so that the real-time wind speed at the air inlet of the dryer is the same as the target wind speed, so as to achieve the best drying effect.

[0032] It should be noted that this solution monitors the real-time wind speed at the dryer's air inlet after the dryer has finished operating, compares it with the target wind speed, and then adjusts the speed of the dryer's fan accordingly. This method ensures that the real-time wind speed of the dryer reaches the target wind speed during operation. Therefore, this solution solves the technical problem in existing technologies where changes in the internal and external environment of the dryer cause changes in the real-time wind speed at the air inlet, resulting in low drying performance.

[0033] Optionally, before detecting the real-time wind speed at the dryer's air inlet, the method further includes:

[0034] Step S08: Detect the humidity inside the dryer.

[0035] Specifically, in this embodiment, combined with Figure 3 A temperature sensor S is installed inside the dryer. This humidity sensor S can detect the humidity (moisture content RH1) of the clothes inside the dryer and feed it back to the dryer controller in real time.

[0036] Step S09: Determine the target fan speed associated with the humidity and the target wind speed at the dryer inlet based on the humidity.

[0037] Step S10: Control the dryer's fan to run at the target fan speed.

[0038] Specifically, this solution can determine the target fan speed R1 and the target air velocity at the dryer inlet based on the pre-established correlation. It should be noted that in the above-mentioned pre-established correlation, the target speed and target air velocity will be different depending on the humidity of the clothes inside the dryer. That is, this solution can adjust the drying strategy according to the different conditions of the clothes in the dryer, which solves the technical problem of high energy consumption caused by existing dryers always operating according to a fixed drying program.

[0039] Optionally, step S09, determining the target fan speed associated with the humidity based on the humidity, includes:

[0040] Step S091: If the humidity exceeds a preset humidity, determine a first target fan speed associated with the humidity.

[0041] Step S092: If the humidity does not exceed the preset humidity, determine the second target speed of the fan associated with the humidity, wherein the first target speed of the fan is greater than the second target speed of the fan.

[0042] Specifically, in this embodiment, if the humidity of the clothes inside the dryer exceeds the preset humidity, it means that the humidity of the clothes inside the dryer is relatively high. In this solution, the fan is controlled to run at a high speed to ensure the best drying performance and shorten the drying time. If the humidity of the dryer does not exceed the preset temperature, it means that the humidity inside the dryer is relatively low. In this solution, the fan is controlled to run at a low speed to save energy while achieving drying.

[0043] Optionally, step S15 adjusts the dryer's fan speed based on the target wind speed and the real-time wind speed, including the following three parallel steps S151 to S153:

[0044] Step S151: If the real-time wind speed is greater than the target wind speed, control the real-time rotation speed of the fan to be reduced.

[0045] Specifically, in this embodiment, if the real-time wind speed is greater than the target wind speed, it means that the material of the clothing may be damaged, causing the clothing to remain in a high-temperature state. In this case, the controller needs to reduce the fan speed.

[0046] Step S152: When the real-time wind speed is less than the target wind speed, control the real-time rotational speed of the fan to be increased.

[0047] Specifically, in this embodiment, if the real-time wind speed is less than the target wind speed, it means that the current real-time wind speed is difficult to meet the optimal drying performance, which will increase the drying time and cause uneven drying of clothes, longer power consumption time of the whole machine, and increased power consumption. In this case, the controller needs to send a signal to increase the fan speed.

[0048] Step S153: When the real-time wind speed is equal to the target wind speed, control the fan to maintain the target fan speed.

[0049] Specifically, in this embodiment, if the real-time wind speed is equal to the target wind speed, it means that the current real-time wind speed meets the optimal drying performance, and the controller can control the fan to maintain the target speed.

[0050] Optionally, the real-time rotational speed of the fan can be controlled to decrease or increase, so that the real-time wind speed is equal to the target wind speed.

[0051] Specifically, in this embodiment, the controller controls the real-time rotation speed of the fan to decrease or increase, with the goal of making the real-time wind speed at the air inlet reach the target wind speed. After the wind speed stabilizes, an optimal clothes drying effect can be achieved.

[0052] The following is combined Figure 4 A preferred embodiment of this application is described below:

[0053] First, the user powers on the dryer, puts the wet clothes into the dryer drum, and turns it on. The dryer closes the door and starts the drying program, with the electric heating element continuously running.

[0054] Then, the humidity sensor in the dryer first determines the moisture content RH1 (i.e., humidity RH1) of the clothes in the drum, and feeds back the measured humidity electrical signal to the main control board. The main control board receives the humidity RH1 of the clothes in the drum and determines whether its moisture content exceeds the preset value of the humidity on the main control board.

[0055] If the moisture content RH1 is greater than the preset value, the main control board sends a signal to the fan based on the feedback humidity signal, controlling the fan speed to be set to a high speed R1. The fan operates at the set speed R1. The wind speed sensor at the air inlet detects the wind speed S1 at the air inlet corresponding to the high speed of the fan R1 and feeds the detected S1 signal back to the main control board. After receiving the actual wind speed S1 measured by the wind speed sensor, the main control board compares it with the original wind speed value S11 set by the main control board (the wind speed set by the program when the moisture content is high). If S1 is greater than S11, it means that the actual wind speed is higher than the wind speed set by the program, which may damage the material of the clothes and keep the clothes in a high temperature state. In this case, the main control board needs to reduce the fan speed to reduce the machine speed until S1 = S11. Only then will the wind speed stabilize and continue to run the program at the wind speed of S11 to dry the clothes. If S1 is less than S11, it means that the actual wind speed is lower than the wind speed set in the program. If the wind speed is lower than the preset value S11, the drying time will be longer, resulting in uneven drying of clothes, longer overall power consumption time, and increased power consumption. In this case, the main control board needs to send a signal to increase the fan speed. After the fan speed is increased to match the original preset value, the wind speed will remain stable, and the fan will continue to run the program at the wind speed of S11 to dry the clothes.

[0056] If not, meaning the moisture content RH1 is not greater than the preset value, after receiving the signal from the humidity sensor, the main control board will send a signal to the fan to control it to run at a low speed R2. The wind speed sensor at the air inlet detects the wind speed S2 at the air inlet corresponding to the high speed of the fan R2 and feeds the detected S2 signal back to the main control board. After receiving the actual wind speed S2 measured by the wind speed sensor, the main control board compares it with the original wind speed value S22 set by the main control board (the wind speed set by the program when the moisture content is low). If S2 is greater than S22, it means that the actual wind speed is higher than the wind speed set by the program, which may damage the material of the clothes and keep the clothes in a high temperature state. In this case, the main control board needs to reduce the speed of the fan to reduce the speed of the machine until S2 = S22. Only then will the wind speed stabilize and continue to run the program at the wind speed of S22 to dry the clothes. If S2 is less than S22, it means that the actual wind speed is lower than the wind speed set in the program. A wind speed lower than the preset value S22 will prolong the drying time, cause uneven drying of clothes, increase the overall power consumption time, and increase power consumption. In this case, the main control board needs to send a signal to increase the fan speed. After the fan speed is increased to match the original preset value, the wind speed remains stable, and the fan continues to run the program at the wind speed of S22 to dry the clothes.

[0057] In summary, this application ensures that the electric heating element operates continuously after the dryer is powered on. A humidity sensor inside the drum determines the humidity of the clothes, and a wind speed sensor at the dryer's air inlet determines the airflow speed. Feedback on the clothes' humidity level is sent to the main control board, which adjusts the fan speed. The wind speed sensor then checks if the adjusted speed reaches a preset value. If not, the fan speed is adjusted again until the airflow speed at the air inlet reaches the preset value. This allows for more intelligent adjustment of the fan speed based on the different moisture contents of the clothes and the airflow speed at the air inlet, resulting in a more efficient drying process.

[0058] Example 2

[0059] This application also provides a control system for a clothes dryer, which can be used to execute the method of Embodiment 1 above, in combination with... Figure 5 The system includes:

[0060] Wind speed sensor 50 is used to detect the real-time wind speed at the air inlet of the dryer;

[0061] The controller 52 is used to obtain the target wind speed at the air inlet of the dryer, and adjust the fan speed of the dryer according to the target wind speed and the real-time wind speed.

[0062] Optionally, the control system further includes:

[0063] A humidity sensor is used to detect the humidity inside the dryer and send it to the controller;

[0064] The controller is also configured to determine the target fan speed associated with the humidity and the target wind speed at the air inlet of the dryer based on the humidity, and control the fan of the dryer to operate according to the target fan speed.

[0065] Optionally, if the humidity exceeds a preset humidity, the controller is further configured to determine a first target fan speed associated with the humidity;

[0066] If the humidity does not exceed a preset humidity, the controller is further configured to determine a second target fan speed associated with the humidity, wherein the first target fan speed is greater than the second target fan speed.

[0067] Optionally, if the real-time wind speed is greater than the target wind speed, the controller is also used to control the reduction of the real-time rotational speed of the fan;

[0068] If the real-time wind speed is less than the target wind speed, the controller is also used to control and increase the real-time rotational speed of the fan;

[0069] When the real-time wind speed is equal to the target wind speed, the controller is also used to control the fan to maintain the target fan speed.

[0070] This application also provides a clothes dryer, characterized in that it includes the control system of any one of the embodiments in the second embodiment.

[0071] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0072] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0073] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0074] If the integrated units in the above embodiments are implemented as software functional units and sold or used as independent products, they can be stored in the aforementioned computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause one or more computer devices (which may be personal computers, servers, or network devices, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application.

[0075] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0076] In the several embodiments provided in this application, it should be understood that the disclosed client can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, indirect coupling or communication connection between units or modules, and may be electrical or other forms.

[0077] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0078] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0079] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A control method for a clothes dryer, characterized in that, include: The real-time wind speed at the dryer's air inlet was detected; Obtain the target wind speed at the dryer's air inlet; Adjust the dryer's fan speed according to the target wind speed and the real-time wind speed; Before detecting the real-time airflow velocity at the dryer's air inlet, the method further includes: Humidity inside the dryer was detected; The target fan speed and the target air velocity at the dryer inlet are determined based on the humidity. Control the dryer's fan to operate at the target fan speed.

2. The method according to claim 1, characterized in that, Determining the target fan speed associated with the humidity based on the humidity includes: If the humidity exceeds a preset humidity, a first target fan speed associated with the humidity is determined; If the humidity does not exceed a preset humidity, a second target fan speed associated with the humidity is determined, wherein the first target fan speed is greater than the second target fan speed.

3. The method according to claim 1, characterized in that, Adjusting the dryer's fan speed based on the target wind speed and the real-time wind speed includes: If the real-time wind speed is greater than the target wind speed, the real-time speed of the fan is controlled to be reduced. If the real-time wind speed is less than the target wind speed, the real-time rotational speed of the fan is increased. When the real-time wind speed is equal to the target wind speed, the fan is controlled to maintain the target fan speed.

4. The method according to claim 3, characterized in that, Control the real-time speed of the fan to decrease or increase, so that the real-time wind speed is equal to the target wind speed.

5. A control system for a clothes dryer, characterized in that, include: A wind speed sensor is used to detect the real-time wind speed at the air inlet of the dryer; The controller is used to obtain the target wind speed at the air inlet of the dryer and adjust the fan speed of the dryer according to the target wind speed and the real-time wind speed. The control system further includes: A humidity sensor is used to detect the humidity inside the dryer and send it to the controller; The controller is also configured to determine the target fan speed associated with the humidity and the target wind speed at the air inlet of the dryer based on the humidity, and control the fan of the dryer to operate according to the target fan speed.

6. The control system according to claim 5, characterized in that, If the humidity exceeds a preset humidity, the controller is also configured to determine a first target fan speed associated with the humidity; If the humidity does not exceed a preset humidity, the controller is further configured to determine a second target fan speed associated with the humidity, wherein the first target fan speed is greater than the second target fan speed.

7. The control system according to claim 5, characterized in that, If the real-time wind speed is greater than the target wind speed, the controller is also used to control the reduction of the real-time rotational speed of the fan; If the real-time wind speed is less than the target wind speed, the controller is also used to control and increase the real-time rotational speed of the fan; When the real-time wind speed is equal to the target wind speed, the controller is also used to control the fan to maintain the target fan speed.

8. A clothes dryer, characterized in that, The control system includes any one of claims 5 to 7.

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