Clothes dryer and control method thereof

Abstract

The application discloses a clothes dryer and a control method thereof. The clothes dryer comprises a clothes dryer main body, a lint collecting device, an image recognition module and a controller. The lint collecting device comprises a filter screen, a collecting box and a cleaning assembly. The filter screen is arranged at a communication position of a cylinder and a condensing structure. The collecting box is arranged at one side of the filter screen. The cleaning assembly is used for cleaning the lint accumulated on the filter screen into the collecting box. The image recognition module is used for identifying the material of clothes put into the cylinder. The controller is electrically connected with the image recognition module and the lint collecting device. The controller is used for determining the working mode of the lint collecting device according to the material of clothes detected by the image recognition module, and controlling the lint collecting device to operate in the corresponding working mode. In the clothes drying process, the lint on the filter screen is cleaned down. After the clothes drying is completed, the user does not need to manually clean the filter screen again, which does not affect the next clothes drying process, and improves the user experience.

Description

Technical Field

[0001] This application belongs to the field of home appliances, and in particular relates to a clothes dryer and its control method. Background Technology

[0002] Because dryers can quickly dry clothes in a short time (compared to air drying), they have gradually become an important choice for most families when purchasing household appliances.

[0003] In related technologies, when clothes are dried in a dryer, lint on the clothes is detached by the hot air. To prevent lint from entering the drying tunnel, existing dryers are generally equipped with filters to filter lint from the air. However, after repeated use, too much lint accumulates on the filter, affecting airflow and requiring manual cleaning by the user, thus impacting the user experience. Summary of the Invention

[0004] This application provides a clothes dryer and its control method, which can automatically clean up lint generated during the drying process and improve the user experience.

[0005] In a first aspect, embodiments of this application provide a clothes dryer, comprising:

[0006] The main body of the dryer includes a drum and a condenser structure communicating with the drum;

[0007] A lint collection device includes a filter screen, a collection box, and a cleaning component. The filter screen is disposed at the connection between the cylinder and the condensation structure. The collection box is disposed on one side of the filter screen. The cleaning component is used to clean the lint accumulated on the filter screen into the collection box.

[0008] An image recognition module is used to identify the material of the clothing placed inside the cylinder; and

[0009] The controller is electrically connected to the image recognition module and the lint collection device. The controller is used to determine the working mode of the lint collection device based on the clothing material detected by the image recognition module, and to control the lint collection device to operate in the corresponding working mode.

[0010] Optionally, the lint collection device includes a high-frequency operating mode and a low-frequency operating mode;

[0011] When the image recognition module detects that the clothes inside the drum contain clothes that are prone to producing lint, the controller controls the lint collection device to operate in the high-frequency working mode; when the image recognition module detects that the clothes inside the drum do not contain clothes that are prone to producing lint, the controller controls the lint collection device to operate in the low-frequency working mode.

[0012] Optionally, the dryer also includes a humidity sensor, which is electrically connected to the controller and is used to detect the air humidity value inside the drum.

[0013] When the air humidity value is lower than the first preset humidity value, the controller controls the lint collection device to stop working.

[0014] Optionally, the cleaning component includes:

[0015] A cleaning brush is slidably disposed on the side of the filter screen opposite to the collection box, and the cleaning brush extends along a first direction; and

[0016] A driving structure is connected to the cleaning brush drive, and the driving structure is used to drive the cleaning brush to slide back and forth along a second direction, which is perpendicular to the first direction.

[0017] Optionally, the number of filters is two, and the two filters are stacked at intervals;

[0018] The number of cleaning brushes is two, and the two cleaning brushes and the two filter screens are set one to one.

[0019] Optionally, the filter screen has a marked side that is parallel to the first direction;

[0020] The two cleaning brushes are staggered along the second direction, and the distance from the cleaning brush located near the cylinder to the corresponding first side is greater than the distance from the cleaning brush located near the condensation structure to the corresponding first side.

[0021] Secondly, this application also provides a control method for a clothes dryer, applied to the clothes dryer described in any of the above embodiments, the control method comprising:

[0022] Obtain the material of the clothing placed inside the cylinder;

[0023] If the cylinder contains clothing that easily generates lint, the lint collection device is controlled to operate in a high-frequency mode.

[0024] If the cylinder does not contain clothing that easily generates lint, the lint collection device is controlled to operate in a low-frequency mode.

[0025] Optionally, if the cylinder does not contain clothing that easily generates lint, after controlling the lint collection device to operate in a low-frequency mode, the control method further includes:

[0026] Obtain the air humidity value inside the cylinder;

[0027] If the air humidity value is lower than the first preset humidity value, the lint collection device will stop working.

[0028] Optionally, the number of filter screens is two, and the two filter screens are stacked and spaced apart. The cleaning component includes a first cleaning brush and a second cleaning brush. The first cleaning brush is slidably disposed on one of the two filter screens near the cylinder, and the second cleaning brush is slidably disposed on the other of the two filter screens.

[0029] If the cylinder contains clothing that easily generates lint, controlling the lint collection device to operate in a high-frequency mode includes:

[0030] After starting the first cleaning brush, wait for a first duration before starting the second cleaning brush.

[0031] Optionally, if the cylinder does not contain clothing that easily generates lint, controlling the lint collection device to operate in a low-frequency mode includes:

[0032] Control the first cleaning brush to work, and control the second cleaning brush to not work.

[0033] In this embodiment, during the drying process, the dryer automatically cleans the lint accumulated on the filter screen through a cleaning component, preventing excessive lint buildup on the filter screen from affecting the flow of hot air and thus preventing the drying time from being prolonged. Furthermore, since the lint on the filter screen has already been cleaned during the drying process, the user does not need to manually clean the filter screen after the drying is finished, which will not affect the next drying process and improves the user experience.

[0034] Furthermore, this embodiment of the application also uses an image recognition module to detect the material of the clothing placed inside the cylinder, and determines the working mode of the lint collection device based on the material of the clothing. This allows the lint collection device to operate in a reasonable working mode according to the ease with which lint is generated. This not only ensures that the lint accumulated on the filter screen is cleaned up, but also improves the effective utilization rate of the lint collection device, prevents the cleaning components of the lint collection device from working ineffectively, reduces power consumption, and lowers the user's electricity costs. Attached Figure Description

[0035] The technical solution and its beneficial effects will become apparent from the following detailed description of specific embodiments of this application, in conjunction with the accompanying drawings.

[0036] Figure 1 This is a partial structural schematic diagram of the lint collection device for a clothes dryer provided in an embodiment of this application.

[0037] Figure 2 for Figure 1 Cross-sectional view of the lint collection device.

[0038] Figure 3 This is a first flowchart of a control method for a clothes dryer provided in an embodiment of this application.

[0039] Figure 4 This is a second flowchart of a control method for a clothes dryer provided in an embodiment of this application. Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0041] This application provides a clothes dryer and a control method for the clothes dryer to automatically remove lint generated during the drying process and improve the user experience.

[0042] In this embodiment, the clothes dryer includes a dryer body, a lint collection device, an image recognition module, and a controller. The dryer body includes a drum and a condenser structure communicating with the drum. Please refer to... Figure 1 The filter 10 includes a filter screen 10, a collection box, and a cleaning component. The filter screen 10 is located at the connection between the cylinder and the condensation structure. The collection box is located on one side of the filter screen 10. The cleaning component is used to clean the lint accumulated on the filter screen 10 into the collection box.

[0043] Understandably, the main body of a dryer also includes a shell and a drying tunnel structure. The drum is rotatably installed inside the shell, and one end of the drying tunnel structure is connected to the inside of the drum. The drying tunnel structure is usually equipped with heating components and a fan. The heating components can be electric heating tubes or condenser tubes to heat the air in the drying tunnel and blow it into the drum under the action of the fan, thereby providing hot air into the drum and realizing the drying function of the clothes in the drum.

[0044] One end of the condenser structure is connected to the drying tunnel structure. Under the suction force of the fan, the hot and humid air inside the cylinder flows into the condenser structure. The condenser structure is usually equipped with condensate or evaporation pipes to exchange heat with the incoming hot and humid air, so that the moisture in the air condenses in the condenser structure, thereby turning the hot and humid air into dry and cold air and re-entering the drying tunnel structure.

[0045] Specifically, during the drying process, under the action of hot air, the lint on the clothes floats in the hot air and flows from the drum to the condensing structure with the hot air. This application provides a filter screen 10 at the connection between the condensing structure and the drum. Under the blocking effect of the filter screen 10, the lint in the hot air accumulates on the filter screen 10.

[0046] Furthermore, during the drying process, the dryer of this application automatically cleans the lint accumulated on the filter screen 10 through the cleaning component, preventing excessive lint accumulation on the filter screen 10 from affecting the flow of hot air and thus preventing the drying time from being prolonged. Since the lint on the filter screen 10 has already been cleaned during the drying process, the user does not need to manually clean the filter screen 10 after the drying is finished, which will not affect the next drying process and improve the user experience.

[0047] Since different clothing materials generate lint to varying degrees, in order to improve the working efficiency of the lint collection device 1, in this embodiment of the application, the dryer also includes an image recognition sensor and a controller. The image recognition module is used to identify the material of the clothing placed inside the drum. The controller is electrically connected to the image recognition module and the lint collection device 1. The controller is used to determine the working mode of the lint collection device 1 based on the clothing material detected by the image recognition module, and control the lint collection device 1 to operate in the corresponding working mode.

[0048] Specifically, when the image recognition module detects that the material of the clothes placed in the drum is prone to producing lint, it means that a lot of lint is generated during the drying process. In order to prevent too much lint from accumulating on the filter screen 10 and affecting the flow of hot air, the controller can control the lint collection device 1 to operate at a higher frequency. When the image recognition module detects that the material of the clothes placed in the drum is not prone to producing lint, it means that less lint is generated during the drying process. In this case, the controller can control the lint collection device 1 to operate at a lower frequency.

[0049] The image recognition module can be a camera, which can be installed in the housing. During the process of putting clothes into the tube, the image recognition module first acquires an image of the clothes and then identifies the material of the clothes based on the image.

[0050] Thus, this embodiment of the application also uses an image recognition module to detect the material of the clothing placed inside the drum, and determines the working mode of the lint collection device 1 based on the material of the clothing. This allows the lint collection device 1 to operate in a reasonable working mode according to the ease with which lint is generated. This not only ensures that the lint accumulated on the filter screen 10 is cleaned up, but also improves the effective utilization rate of the lint collection device 1, prevents the cleaning components of the lint collection device 1 from working ineffectively, reduces power consumption, and lowers the user's electricity costs.

[0051] For example, in one embodiment, the lint collection device 1 includes a high-frequency operating mode and a low-frequency operating mode. When the image recognition module detects that the clothes inside the drum contain clothes that are prone to generating lint, the controller controls the lint collection device 1 to operate in the high-frequency operating mode; when the image recognition module detects that the clothes inside the drum do not contain clothes that are prone to generating lint, the controller controls the lint collection device 1 to operate in the low-frequency operating mode.

[0052] It should be noted that the high-frequency working mode refers to the cleaning component of the lint collection device 1 operating at a higher working frequency, while the low-frequency working mode refers to the cleaning component of the lint collection device 1 operating at a relatively lower working frequency.

[0053] For example, in some embodiments, the cleaning component includes a cleaning brush 20, which is rotatable and rotates at different speeds in different operating modes. For instance, in a high-frequency operating mode, the cleaning brush 20 rotates at a first rotational speed, while in a low-frequency operating mode, the cleaning brush 20 rotates at a second rotational speed, where the first rotational speed is greater than the second rotational speed.

[0054] In other embodiments, the cleaning component includes a drive member that drives the cleaning brush 20 to reciprocate along the surface of the filter 10. The duration of the movement of the cleaning brush 20 varies depending on the operating mode. For example, in a high-frequency operating mode, the proportion of the time the drive member drives the cleaning brush 20 to reciprocate along the filter 10 to the total drying time is a first proportion. In a low-frequency operating mode, the proportion of the time the drive member drives the cleaning brush 20 to reciprocate along the filter 10 to the total drying time is a second proportion, where the first proportion is greater than the second proportion.

[0055] Since the amount of lint generated by clothes during the drying process is limited, when the dryer has been working for a certain period of time, most of the lint inside the drum has been collected into the collection box by the lint collection device 1. In order to prevent the lint collection device 1 from continuing to work and to prevent the lint collection device 1 from wasting power, the lint collection device 1 can be stopped at this time.

[0056] For example, in one embodiment, the dryer also includes a humidity sensor electrically connected to the controller. The humidity sensor is used to detect the air humidity value inside the drum. When the air humidity value is lower than a first preset humidity value, the controller controls the lint collection device 1 to stop working.

[0057] Specifically, when the humidity sensor detects that the humidity level inside the drum is less than or equal to a first preset humidity value, it indicates that the dryer has reached a certain stage of operation, the clothes inside the drum are nearly dry, most of the lint attached to the clothes has been removed by the hot air, and most of the lint in the air inside the drum has been collected into the collection box by the lint collection device 1. At this point, the controller stops the lint collection device 1 from working. This avoids the lint collection device 1 from working ineffectively for a long time, reduces power consumption, and saves users' electricity costs.

[0058] Please refer to Figure 1 , Figure 1 This is a partial structural schematic diagram of the lint collection device for a dryer according to an embodiment of this application. In this embodiment, the cleaning component includes a cleaning brush 20 and a drive structure (not shown). The cleaning brush 20 is slidably disposed on the side of the filter screen 10 opposite to the collection box, and the cleaning brush 20 extends along a first direction. The drive structure is drivenly connected to the cleaning brush 20, and the drive structure is used to drive the cleaning brush 20 to reciprocate along a second direction, which is perpendicular to the first direction.

[0059] The condenser structure has an air inlet on the side near the cylinder. The lint collection device 1 also includes a mounting frame 30, which is fixed at the air inlet. The mounting frame 30 serves as a carrier for the installation and positioning of the filter screen 10, the cleaning brush 20, and the drive structure.

[0060] The mounting frame 30 is provided with a slot for inserting the filter screen 10. The filter screen 10 can be pulled out and slidably inserted into the slot for easy replacement by the user later. In order to enhance the filtering effect of the filter screen 10 on lint, the filter screen 10 is made of mesh.

[0061] Specifically, the cleaning brush 20 is driven to slide back and forth in the second direction by the driving structure, so that the cleaning brush 20 slides to various positions of the filter screen 10, thereby sweeping down the lint from various places on the filter screen 10.

[0062] The cleaning brush 20 can be a fixed brush or a rotating brush, and the specific structure of the cleaning brush 20 is not limited here. When the cleaning brush 20 is a fixed brush, the cleaning brush 20 includes a brush body and bristles connected to one side of the brush body. The brush body is connected to the drive structure, the bristles are in contact with the surface of the filter screen 10, and the drive structure drives the brush body to move in the second direction.

[0063] When the cleaning brush 20 is a rotating brush, the cleaning brush 20 includes a shaft and a drive motor connected to the shaft drive motor. The outer peripheral wall of the shaft is surrounded by bristles. The drive motor drives the shaft to rotate, causing the bristles to rub on the filter screen 10. The drive structure is integrally connected to the cleaning brush 20, and the drive structure also drives the cleaning brush 20 to move in the second direction.

[0064] To further enhance the filtration effect on lint, in one embodiment, please refer to the reference. Figure 1 and Figure 2 There are two filter screens 10, which are stacked and spaced apart. There are two cleaning brushes 20, which are set one-to-one with the two filter screens 10.

[0065] like Figure 1 As shown, the mounting frame 30 is provided with two slots, which are spaced apart along the thickness direction of the mounting frame 30, and two filters 10 are respectively inserted into the two slots.

[0066] Thus, by setting two filters 10 stacked and spaced apart, this embodiment can improve the filtration effect of the brush collection device. When the lint in the air inside the cylinder is small and fine, even if a small part of the lint passes through the first filter 10, the second filter 10 can still block it to further prevent small lint from entering the condensation structure.

[0067] Understandably, when there are two filter screens 10, the filter screen 10 closer to the cylinder can be made of mesh with larger pores, while the filter screen 10 farther from the cylinder can be made of mesh with smaller pores. That is, the pores of the two filter screens 10 are not the same, so as to ensure that the filter screen 10 can block lint from passing through, while allowing hot air to pass through the first filter screen 10 with less resistance, thereby reducing the obstruction of airflow by the two filter screens 10.

[0068] When there are two filter screens 10, under the flow of hot air, the lint cleaned off from the filter screen 10 on the side closer to the cylinder will fall onto the filter screen 10 on the side farther from the cylinder, causing some lint to accumulate on the filter screen 10 on the side farther from the cylinder.

[0069] To address the above problems, optionally, in one embodiment, please refer to the reference... Figure 1 and Figure 2 The filter screen 10 has a marked side 10a, which is parallel to the first direction; two cleaning brushes 20 are staggered along the second direction, and the distance from the cleaning brush 20 located near the cylinder to the corresponding first side 10a is greater than the distance from the cleaning brush 20 located near the condensation structure to the corresponding first side 10a.

[0070] For ease of explanation, the filter screen 10 closer to the cylinder is defined as the first filter screen 11, the cleaning brush 20 corresponding to the filter screen 10 closer to the cylinder is defined as the first cleaning brush 21, the filter screen 10 farther from the cylinder is defined as the second filter screen 12, and the cleaning brush 20 corresponding to the filter screen 10 farther from the cylinder is defined as the second cleaning brush 22.

[0071] With the above settings, the first cleaning brush 21 is closer to the edge of the first filter screen 11 in the initial position. When the first cleaning brush 21 cleans the lint off the first filter screen 11, the lint cleaned off the first filter screen 11 falls into the area of ​​the second filter screen 12 that has not yet been cleaned. Thus, the lint that falls onto the second filter screen 12 can be cleaned off by the second cleaning brush 22, thereby preventing the accumulation of lint cleaned off the first filter screen 11 on the second filter screen 12.

[0072] This application also provides a control method for a clothes dryer. Please refer to... Figure 3 The figure is a flowchart illustrating a control method for a clothes dryer according to three embodiments of this application. Specifically, this control method for a clothes dryer is applied to a clothes dryer based on the above-described design concept.

[0073] The dryer includes a dryer body and a lint collection device 1. The dryer body includes a drum and a condenser structure connected to the drum. The lint collection device 1 includes a filter screen 10, a collection box, and a cleaning component. The filter screen 10 is located at the connection between the drum and the condenser structure. The collection box is located on one side of the filter screen 10. During the drying process, the lint generated by the clothes in the drum flows towards the condenser structure under the action of hot air and accumulates on the filter screen 10 due to the obstruction of the filter screen 10. The cleaning component is used to clean the lint accumulated on the filter screen 10 into the collection box.

[0074] like Figure 3 As shown in the embodiments of this application, the control method for the clothes dryer includes:

[0075] 101: Get the material of the clothing placed inside the cylinder.

[0076] The dryer is equipped with an image recognition module, which is used to acquire image information of the clothes placed inside the drum, so that the dryer can identify the material of the clothes based on the acquired image.

[0077] For example, the image recognition module could be a camera that captures images of the clothing placed inside the drum. The camera then inputs these images into a pre-set recognition program to identify the material. Alternatively, before placing the clothing inside the drum, the camera can capture images of the clothing labels, and the material information of the clothing can be directly obtained by recognizing the text information on the labels.

[0078] 102: If the clothes inside the drum include clothes that are prone to producing lint, control the lint collection device 1 to operate in a high-frequency working mode.

[0079] The cleaning component of the lint collection device 1 includes a cleaning brush 20. By driving the cleaning brush 20 to move along the filter screen 10, the lint accumulated on the filter screen can be cleaned and dropped into the collection box.

[0080] When the clothes inside the drum are detected to contain clothes that are prone to producing lint, a large amount of lint is likely to be generated during the drying process of the dryer. In order to prevent a large amount of lint from accumulating on the filter screen 10 and affecting the airflow, the lint collection device 1 is controlled to operate in a high-frequency working mode.

[0081] It should be noted that the high-frequency working mode refers to the cleaning component of the lint collection device 1 operating at a higher working frequency. Correspondingly, the lint collection device 1 also has a low-frequency working mode, which refers to the cleaning component of the lint collection device 1 operating at a relatively lower working frequency.

[0082] For example, in high-frequency operating mode, the number of times the cleaning brush 20 moves back and forth along the filter screen 10 per unit time is the first count, and in low-frequency operating mode, the number of times the cleaning brush 20 moves back and forth along the filter screen 10 per unit time is the second count, and the first count is greater than the second count.

[0083] Alternatively, in high-frequency working mode, the cleaning time of the cleaning brush 20 moving back and forth along the filter screen 10 accounts for the first proportion of the total drying time, and in low-frequency working mode, the cleaning time of the cleaning brush 20 moving back and forth along the filter screen 10 accounts for the second proportion of the total drying time, with the first proportion being greater than the second proportion.

[0084] 103: If the clothes inside the drum do not include clothes that are prone to producing lint, control the lint collection device 1 to operate in a low-frequency working mode.

[0085] When it is detected that the clothes inside the drum do not contain clothes that are prone to producing lint, then the lint produced during the drying process of the dryer is relatively small. In order to improve the effective utilization rate of the lint collection device 1, the lint collection device 1 is controlled to operate in a low-frequency working mode.

[0086] Thus, by controlling the operation of the lint collection device 1, this application can collect lint during the drying process of the dryer. On the one hand, it prevents a large amount of lint from accumulating on the filter screen 10 and affecting the flow of hot air, thus avoiding prolonging the drying time. On the other hand, the lint collection device 1 automatically cleans up the lint generated during the drying process, so that the user does not need to manually clean it after the drying is finished, thus avoiding affecting the next drying and improving the user experience.

[0087] Furthermore, the control method provided in this application embodiment obtains the material information of the clothing to determine the ease with which the clothing generates lint, and then controls the lint collection device 1 to operate in the corresponding working mode. When there is a lot of lint, the lint collection device 1 is controlled to operate in a high-frequency working mode, and when there is less lint, the lint collection device 1 is controlled to operate in a low-frequency working mode, thereby improving the effective utilization rate of the lint collection device 1, avoiding ineffective operation of the lint collection device 1, reducing power consumption, and reducing the user's electricity costs.

[0088] This application also provides a control method for a clothes dryer; please refer to [reference needed]. Figure 4 , Figure 4 This is a second flowchart of a control method for a clothes dryer provided in an embodiment of this application. In this embodiment, the control method for the clothes dryer includes steps 201-205, wherein steps 201-203 are the same as steps 101-103 of the control method for the clothes dryer provided in the above embodiment, and will not be described in detail below.

[0089] 204: Obtain the air humidity value inside the cylinder.

[0090] The dryer is equipped with a humidity sensor, which can detect the air humidity inside the drum in real time during the drying process. The humidity sensor transmits the detected air humidity value to the controller, so that the controller can output corresponding control commands based on the air humidity value.

[0091] 205: If the air humidity value is lower than the first preset humidity value, control the lint collection device 1 to stop working.

[0092] Understandably, since the amount of lint generated by clothes during the drying process is limited, when the dryer has been working for a certain period of time, most of the lint inside the drum has been collected into the collection box by the lint collection device 1. In order to prevent the lint collection device 1 from continuing to work and to prevent the lint collection device 1 from working ineffectively, the lint collection device 1 can be stopped at this time.

[0093] Therefore, in this embodiment, a first preset humidity value and a second preset humidity value are preset in the control program of the controller, and the first preset humidity value is greater than the second preset humidity value; wherein, the second preset humidity value is used as the humidity standard for the dryer to stop, and the first preset humidity value is used as the humidity standard for the lint collection device 1 to stop working.

[0094] Specifically, when the humidity sensor detects that the air humidity inside the drum is less than or equal to the second preset humidity value, that is, the air humidity inside the drum is low and the moisture content of the air inside the drum is very low, it means that the clothes inside the drum have been completely dried, and the controller controls the dryer to stop, and the drying process ends.

[0095] When the humidity sensor detects that the humidity level inside the drum is less than or equal to the first preset humidity value, it indicates that the dryer has reached a certain stage of operation, the clothes inside the drum are nearly dry, most of the lint attached to the clothes has been removed by the hot air, and most of the lint in the air inside the drum has been collected into the collection box by the lint collection device 1. At this point, the controller stops the lint collection device 1 from working. This avoids the lint collection device 1 from working ineffectively for a long time, reduces power consumption, and saves users' electricity costs.

[0096] Moreover, since the total drying time varies for each drying process, this embodiment uses a set humidity value to control the lint collection device 1 to stop, rather than directly setting the working time of the lint collection device 1. This makes the judgment more accurate and avoids the situation where a large amount of lint remains on the filter screen 10 without being cleaned and collected.

[0097] In one embodiment, the dryer has two filters 10, which are stacked and spaced apart. The cleaning component includes a first cleaning brush 21 and a second cleaning brush 22. The first cleaning brush 21 is slidably disposed on one of the two filters 10 near the drum, and the second cleaning brush 22 is slidably disposed on the other of the two filters 10.

[0098] Step 102: If the drum contains clothing that easily generates lint, control the lint collection device 1 to operate in high-frequency mode, specifically including the following steps:

[0099] After the first cleaning brush 21 is started, wait for a first duration before starting the second cleaning brush 22.

[0100] For ease of explanation, the filter screen 10 closer to the cylinder is defined as the first filter screen 11, and the filter screen 10 farther from the cylinder is defined as the second filter screen 12. Specifically, by activating the first cleaning brush 21, the first cleaning brush 21 sweeps down the lint accumulated on the first filter screen 11, and the cleaned-down lint falls onto the second filter screen 12. After a certain period of time, the second cleaning brush 22 is activated, and the second cleaning brush 22 cleans up the lint that was originally accumulated on the second filter screen 12, as well as the lint that fell from the first filter screen 11.

[0101] Thus, if the drum contains clothing that is prone to producing lint, it means that a lot of lint is produced during the drying process. By activating both the first cleaning brush 21 and the second cleaning brush 22, the cleaning needs of the two filters 10 can be met, preventing the two filters 10 from accumulating too much lint and affecting the flow of hot air.

[0102] Furthermore, the control method of this embodiment controls the first cleaning brush 21 and the second cleaning brush 22 to start sequentially, so that the lint cleaned from the filter screen 10 (i.e., the first filter screen 11) near the cylinder falls to the area of ​​the filter screen 10 (i.e., the second filter screen 12) away from the cylinder that has not yet been cleaned. This allows the second cleaning brush 22 to clean up the lint swept down by the first cleaning brush 21. Compared to starting the first cleaning brush 21 and the second cleaning brush 22 simultaneously, this avoids the situation where the area of ​​the filter screen 10 away from the cylinder that has already been cleaned is again filled with fallen lint.

[0103] In addition, starting the first cleaning brush 21 and the second cleaning brush 22 sequentially can reduce the starting current and protect the circuit. Compared with starting the first cleaning brush 21 and the second cleaning brush 22 simultaneously, it can prevent the circuit from being overloaded and burned out due to excessive instantaneous starting current.

[0104] Step 103 If the drum does not contain clothing that easily generates lint, control the lint collection device 1 to operate in a low-frequency mode, specifically including the following steps:

[0105] Control the first cleaning brush 21 to work, and control the second cleaning brush 22 to not work.

[0106] Specifically, if the drum does not contain lint-producing clothing, it means that less lint is generated during the drying process, resulting in less lint accumulating on the filter screen 10 and a lower need for cleaning the filter screen 10. Moreover, since there are two filter screens 10, the lint accumulating on the filter screen 10 closer to the drum is usually more than that on the filter screen 10 farther away from the drum, so only the filter screen 10 closer to the drum needs to be cleaned to meet the requirements.

[0107] Therefore, this embodiment can save electricity and reduce the user's electricity costs by controlling the first cleaning brush to work and the second cleaning brush to not work.

[0108] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0109] The dryer and its control method provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A clothes dryer, characterized in that, include: The main body of the dryer includes a drum and a condenser structure communicating with the drum; A lint collection device includes a filter screen, a collection box, and a cleaning component. The filter screen is disposed at the connection between the cylinder and the condensation structure. The collection box is disposed on one side of the filter screen. The cleaning component is used to clean the lint accumulated on the filter screen into the collection box. The cleaning component includes: a cleaning brush slidably disposed on the side of the filter screen away from the collection box, and the cleaning brush extends along a first direction; and a drive structure drivenly connected to the cleaning brush, the drive structure being used to drive the cleaning brush to reciprocate along a second direction, the second direction being perpendicular to the first direction. The number of filter screens is two, and the two filter screens are stacked and spaced apart. The number of cleaning brushes is two, and the two cleaning brushes and the two filter screens are arranged one-to-one. The filter screen has a marked side, and the marked side is parallel to the first direction. The two cleaning brushes are staggered along the second direction, and the distance from the cleaning brush located closer to the cylinder to the corresponding marked side is greater than the distance from the cleaning brush located closer to the condensation structure to the corresponding marked side. An image recognition module is used to identify the material of the clothing placed inside the cylinder; and The controller is electrically connected to the image recognition module and the lint collection device. The controller is used to determine the working mode of the lint collection device based on the clothing material detected by the image recognition module, and to control the lint collection device to operate in the corresponding working mode.

2. The clothes dryer according to claim 1, characterized in that, The lint collection device includes a high-frequency operating mode and a low-frequency operating mode; When the image recognition module detects that the clothes inside the drum contain clothes that are prone to producing lint, the controller controls the lint collection device to operate in the high-frequency working mode; when the image recognition module detects that the clothes inside the drum do not contain clothes that are prone to producing lint, the controller controls the lint collection device to operate in the low-frequency working mode.

3. The clothes dryer according to claim 1, characterized in that, The dryer also includes a humidity sensor, which is electrically connected to the controller and is used to detect the air humidity value inside the drum. When the air humidity value is lower than the first preset humidity value, the controller controls the lint collection device to stop working.

4. A control method for a clothes dryer, applied to the clothes dryer according to any one of claims 1 to 3, characterized in that, The control method includes: Obtain the material of the clothing placed inside the cylinder; If the cylinder contains clothing that easily generates lint, the lint collection device is controlled to operate in a high-frequency mode. If the cylinder does not contain clothing that easily generates lint, the lint collection device is controlled to operate in a low-frequency mode.

5. The control method for a clothes dryer according to claim 4, characterized in that, If the cylinder does not contain clothing that easily generates lint, after controlling the lint collection device to operate in a low-frequency mode, the control method further includes: Obtain the air humidity value inside the cylinder; If the air humidity value is lower than the first preset humidity value, the lint collection device will stop working.

6. The control method for a clothes dryer according to claim 4, characterized in that, The number of filter screens is two, and the two filter screens are stacked and spaced apart. The cleaning component includes a first cleaning brush and a second cleaning brush. The first cleaning brush is slidably disposed on one of the two filter screens near the cylinder, and the second cleaning brush is slidably disposed on the other of the two filter screens. If the cylinder contains clothing that easily generates lint, controlling the lint collection device to operate in a high-frequency mode includes: After starting the first cleaning brush, wait for a first duration before starting the second cleaning brush.

7. The control method for a clothes dryer according to claim 6, characterized in that, If the cylinder does not contain clothing that easily generates lint, controlling the lint collection device to operate in a low-frequency mode includes: Control the first cleaning brush to work, and control the second cleaning brush to not work.

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