Thread and scrap separating device of clothes dryer and method capable of collecting and identifying thread and scraps

Abstract

The invention provides a clothes dryer thread and scrap separating device and a thread and scrap collecting and identifying method.The clothes dryer comprises a door body, the thread and scrap separating device is arranged on the inner side of the door body, a gap is formed between the thread and scrap separating device and the inner side of the door body, the gap is communicated with a circulating air channel of the clothes dryer, and the thread and scrap separating device comprises a filtering unit and a collecting device; the to-be-filtered air flow is filtered by the filtering unit before flowing through the door body, thread scraps remaining in the filtering unit after being filtered fall into the collecting device located at the lower end of the filtering unit under the action of gravity, accumulation of the thread scraps on the filtering unit is avoided, then the wind resistance on the surface of the filtering unit is reduced, and the drying efficiency of the clothes dryer is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of dryers, and particularly relates to a lint separation device for a dryer and a method for realizing lint collection and identification. Background Art

[0002] During the operation of a dryer, the fluff and lint on the clothes inevitably flow with the drying air and are blocked by the lint filtering device and retained on the lint filtering device. As the dryer is used, the fluff and lint accumulate on the lint filtering device, blocking the flow of the drying air, resulting in a reduction in the drying efficiency of the dryer and a deterioration of the drying effect.

[0003] To solve this problem, in the prior art, the lint filtering device is usually set as a detachable structure. After the dryer is used for a period of time, the filtering device needs to be removed for cleaning, or a cleaning device is used to spray water on the filtering device for cleaning to ensure the normal operation of the dryer.

[0004] The Chinese invention patent with the application number CN201210575631.7 discloses a lint filtering device, which includes a first lint filtering layer, a second lint filtering layer and a third lint filtering layer. The first lint filtering layer and the second lint filtering layer are mutually clamped and installed under the door body of the front air duct at the air outlet of the dryer drum, and the third lint filtering layer is arranged in the internal air duct of the dryer. The lint is filtered and collected through multiple filtering layers, and the filtering device is taken out for cleaning; although the above solution realizes the filtering and collection of lint, due to the relatively small overall cross-sectional area of the lint filtering layer, there is still a resistance to the flow of the drying air caused by the lint adhering to the filter mesh, thereby affecting the drying efficiency of the dryer.

[0005] In view of this, the present invention is specifically proposed. Summary of the Invention

[0006] The object of the present invention is to provide a lint separation device for a dryer in view of the problems in the prior art. A lint separation device is arranged on the inner side of the door body of the dryer, and there is a gap communicating with the circulating air duct between the lint separation device and the inner side of the door body. The airflow to be filtered is filtered by the filtering unit before passing through the gap, and the filtered lint directly falls into the collection device located at the lower end of the filtering unit, avoiding the accumulation of lint on the filtering unit, thereby reducing the air resistance on the lint separation device and improving the lint filtering efficiency of the lint separation device.

[0007] Another object of the present invention is to provide a method for realizing lint collection and identification for the above-mentioned lint separation device of the dryer. The lint separation device of the dryer further includes an air resistance detection device communicatively connected to the dryer. The air resistance detection device detects the air resistance of the filtering unit in real time. When it detects that the air resistance exceeds the set threshold, the surface of the filtering unit is cleaned to ensure the filtering effect of the lint separation component.

[0008] To achieve the above object, a lint separation device for a dryer is provided in the first aspect of the present invention.

[0009] The dryer includes a door body. It is characterized in that a lint separation device is arranged inside the door body, including:

[0010] A filtering unit, which forms a gap with the inner side of the door body;

[0011] A collecting device, which is located at the lower end of the filtering unit.

[0012] The gap is communicated with the circulating air duct.

[0013] In the above solution, the filtering unit is arranged inside the door body and has a gap communicated with the circulating air duct between it and the inner side of the door body. The filtering unit can completely cover the cross-section of the airflow to be filtered. The lint filtered by the filtering unit directly falls into the collecting device located at the lower end of the filtering unit under the action of gravity, preventing excessive accumulation of lint on the filter screen and unable to be cleaned in time, thereby affecting the working efficiency of the dryer, reducing the problem that the filtering unit is blocked by lint and the air resistance is too large during the working process of the dryer, and further reducing the drying efficiency of the dryer.

[0014] Optionally, the filtering unit forms an angle with the radial cross-section of the door body;

[0015] The size of the angle is proportional to the projection distance of the filtering unit in the axial direction of the door body;

[0016] The width of the collecting device is adapted to the projection distance of the filtering unit in the axial direction of the door body.

[0017] In the above solution, the filtering unit forms a certain angle with the radial cross-section of the door body. The lint filtered by the filtering unit is more likely to fall into the collecting device arranged at the lower end of the filtering unit under the influence of gravity, reducing the lint residue on the filtering unit, and further improving the drying efficiency of the dryer.

[0018] Optionally, the lint separation device further includes a cleaning unit and a driving device;

[0019] The cleaning unit is arranged on the surface of the filtering unit;

[0020] The driving device is used to drive the cleaning unit and / or the filtering unit to perform relative movement.

[0021] In the above solution, the lint separation device further includes a cleaning unit and a driving device. The filtering unit is disposed on the surface of the filtering unit. The driving device is used to drive the cleaning unit and the filtering unit to move relatively, so as to clean the residual lint on the filtering unit, further ensuring that the filtering unit will not have excessive air resistance due to excessive accumulation of lint during the process of filtering air flow, thereby affecting the filtering performance of the filtering unit. The driving device can drive the cleaning unit to move on the surface of the filtering unit; or the driving device is used to drive the filtering unit to move relative to the fixedly arranged cleaning unit, improving the applicability of the lint cleaning solution.

[0022] Optionally, the driving device includes a transmission unit, a mounting member and a motor;

[0023] The mounting member is fixed on the door body and is at least used for fixing the transmission unit;

[0024] The motor drives the cleaning unit and / or the filtering unit to move relatively through the transmission unit.

[0025] In the above solution, the driving device includes a transmission unit, a mounting member and a motor. The mounting member is fixed relative to the door body and is provided with a transmission unit. The transmission unit cleans the filtering unit through the cleaning unit under the drive of the motor, improving the cleaning efficiency of the residual lint on the filtering unit.

[0026] Optionally, the transmission unit is a ball screw. The cleaning unit is mounted on the nut of the ball screw and forms a gap with the inner side of the door body;

[0027] The cleaning unit reciprocates on the surface of the filtering unit under the drive of the ball screw;

[0028] The moving distance of the cleaning unit on the ball screw is adapted to the length of the filtering unit.

[0029] In the above solution, the transmission unit is a ball screw. The cleaning unit is mounted on the nut of the ball screw. The motor drives the nut on the ball screw to reciprocate on the screw. The cleaning unit reciprocates on the filtering unit through the nut of the ball screw to clean the lint on the filtering unit and scrape the cleaned lint into the collection device; and the moving distance of the cleaning unit on the ball screw is adapted to the length of the filtering unit. During the process of cleaning the residual lint on the filter, the path covers the entire surface of the filtering unit, ensuring the cleaning effect of the residual lint on the filtering unit.

[0030] Optionally, the transmission unit is a transmission gear set. The filtering unit is mounted on the inner side of the door body through the transmission gear set and forms a gap with the inner side of the door body;

[0031] The cleaning unit is fixed on the surface of the filtering unit relative to the door body through the mounting member;

[0032] The filtering unit moves relative to the cleaning unit under the transmission of the transmission gear set.

[0033] In the above solution, the transmission unit is a transmission gear set. The filtering unit is installed inside the door body through the transmission gear set. The cleaning unit is fixed relative to the door body at the surface of the filtering unit through the installation point. When cleaning the lint on the surface of the filtering unit, the cleaning unit does not move, and the filtering unit slides relative to the cleaning unit under the transmission of the transmission gear set. The cleaning unit scrapes the residual lint on the surface of the filtering unit into the collection device, ensuring that the filter holes of the filtering unit are not blocked by lint, thereby improving the filtering effect of the filtering unit.

[0034] Optionally, the cleaning unit and the filtering unit move up and down or left and right relative to the door body;

[0035] And the cleaning unit covers the cross-section of the filtering unit.

[0036] In the above solution, the cleaning unit and the filtering unit move up and down or left and right relative to the door body, and a transmission method with higher cleaning efficiency is selected according to the actual situation of the dryer to improve the cleaning efficiency of the residual lint on the surface of the filtering unit.

[0037] Optionally, there is a gap between the filter net unit and the collection device.

[0038] In the above solution, there is a gap between the filtering unit and the collection device, preventing the relative movement between the cleaning unit and the filtering unit from taking the lint in the collection device away from the collection device during the cleaning of the filtering unit by the cleaning unit.

[0039] Optionally, multiple layers of filter nets are arranged at intervals in the axial direction of the door body for the filtering unit;

[0040] A cleaning unit is provided on the surface of each layer of filter net;

[0041] The cleaning unit is arranged on the side of the filter net away from the gap;

[0042] The cleaning unit or the filter net is detachably arranged on the mounting part.

[0043] In the above solution, multiple layers of filter nets are arranged at intervals in the axial direction of the door body for the filtering unit to improve the lint filtering effect of the filtering unit. And a cleaning unit is provided on the surface of each layer of filter net. The cleaning units on the surfaces of each layer of filtering unit can clean the filter nets simultaneously or separately; the cleaning unit is arranged on the side of the filter net away from the gap, facilitating scraping the lint remaining on the filter net into the collection device; and the filter net is detachably arranged on the mounting part, facilitating the maintenance and replacement of the filter net.

[0044] The second aspect of the present invention provides a method for realizing lint collection and identification applicable to the above-mentioned lint separation device of a dryer. The lint separation device of the dryer further includes

[0045] a wind resistance detection device, which is communicatively connected to the dryer and is used to detect the real-time wind resistance of the filtering unit;

[0046] When the wind resistance detection device detects that the real-time wind resistance of the filtering unit exceeds the set threshold, the driving device drives the cleaning unit to clean the surface of the filtering unit.

[0047] In the above solution, when the wind resistance detection device detects that the real-time wind resistance of the filtering unit exceeds the set threshold, it indicates that some of the filtering holes on the filtering unit are blocked by lint. At this time, the control unit of the dryer controls the operation of the motor, and the motor drives the cleaning unit to move relative to the filtering unit. The lint cleaned from the filtering unit falls into the collection device below the filtering unit; the lint separation device of the present invention improves the lint filtering efficiency of the dryer and enhances the user experience.

[0048] The beneficial effects of the present invention are as follows:

[0049] 1. By arranging the filtering unit inside the door body and forming a gap communicating with the circulating air duct with the inner side of the door body, the filtering unit covers the cross-section of the airflow to be filtered. The airflow to be filtered is filtered by the filtering unit when passing through the door body, and the lint blocked by the filtering unit falls into the collection device at the lower end of the filtering unit under the action of gravity, reducing the accumulation of lint on the surface of the filtering unit, thereby reducing the wind resistance on the surface of the filtering unit and improving the drying efficiency of the dryer.

[0050] 2. A cleaning unit is arranged on the surface of the filtering unit. The cleaning unit moves relative to the filtering unit under the drive of the driving device, scraping the residual lint on the surface of the filtering unit into the collection device, preventing the excessive accumulation of lint on the surface of the filtering unit from causing too large a wind resistance and thus affecting the drying efficiency of the dryer; moreover, the filtering unit and the cleaning unit include various relative movement modes, and different transmission modes can be selected according to different usage situations, with high applicability.

[0051] 3. The lint separation device further includes a wind resistance detection device communicatively connected to the dryer, which real-time detects the real-time wind resistance on the surface of the filtering unit. When it detects that the wind resistance on the surface of the filtering unit exceeds the set threshold, the cleaning unit timely cleans the residual lint that has not fallen under the action of gravity on the surface of the filtering unit, ensuring the filtering effect of the filtering unit and thus ensuring the drying efficiency of the dryer. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a schematic diagram of the position where the filtering unit of the present invention is arranged on the door body.

[0053] Figure 2 This is a schematic structural view of a filtering unit in the lint separating device of the dryer according to the present invention.

[0054] Figure 3 This is another schematic structural view of a filtering unit in the lint separating device of the dryer according to the present invention.

[0055] In the figure: 1. Door body; 11. Filtering unit; 12. Cleaning unit; 13. Gap; 14. Driving device; 15. Collection device. Detailed implementation manners

[0056] Hereinafter, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Those skilled in the art can understand that the following embodiments are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention.

[0057] In the description of the present invention, unless otherwise clearly defined and limited, the terms "arrangement" and "connection" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0058] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0059] The dryer has a circulating air duct. The air inlet of the circulating air duct communicates with the inside of the dryer drum from the bottom of the front window gasket, and the air outlet of the circulating air duct communicates with the inside of the drum from the rear or top of the drum to form a circulating air path; generally, the lint separating device in the prior art is arranged at the bottom of the front window. The cross-sectional area of the space at the bottom of the front window is small. During the process of filtering lint by the lint separating device, the filter screen needs to be frequently cleaned to prevent blockage. Even if the filter screen is frequently cleaned, it will increase the workload of the dryer, and thus reduce the filtering efficiency to a certain extent.

[0060] Such as Figure 1As shown in the figure, the present invention provides a lint separation device for a dryer. The dryer includes a door body 1. The filter air duct is arranged opposite to the inner side of the dryer door body 1. A lint separation device is arranged on the inner side of the door body 1. The lint separation device includes a filter unit 11. The filter unit 11 has a mesh structure and has a gap 13 with the inner side of the door body 1. The lint separation device includes a collection device 15. The collection device 15 is arranged at the lower end of the filter unit 11 to collect the filtered lint. Since the filter unit 11 is arranged relative to the door body 1, the lint will naturally fall into the collection device 15 after being filtered by the filter unit 11. While reducing the number of times of cleaning the filter screen, the coverage range of the filter unit 11 is larger and the filtering effect on lint is better.

[0061] Furthermore, to enhance the lint collection rate, the filter unit 11 forms an angle with the radial cross-section of the door body 1. The size of the angle is proportional to the projected distance of the filter unit 11 in the axial direction of the door body 1. After the filter unit 11 finishes filtering the lint, since the filter unit 11 is inclined relative to the radial cross-section of the door body 1, the lint is more likely to fall into the collection device 15.

[0062] For further explanation of the above angle, the filter unit 11 or the cleaning unit 12 is installed on the door body 1 through the installation part. The length of the installation part at the upper end relative to the door body is longer than the length of the installation part at the lower end relative to the door body, thereby realizing the angle between the filter unit 11 and the radial cross-section of the door body 1.

[0063] Furthermore, the installation part is used to adjust the distance between the filter unit 11 or the cleaning unit 12 and the inner side of the door body 1. The user adjusts the installation part according to the amount of lint on the clothes processed by the dryer. When there is more lint on the clothes, the inclination angle of the filter unit 11 relative to the door body 1 is also larger. The filtered lint is more likely to fall into the collection device 15, enhancing the applicability of this solution. At the same time, the larger the angle between the filter unit 11 and the door body, the smaller the filtering area of the filter unit 11 for the air flow. To prevent the filter unit 11 from not covering all the air flow blowing towards the door body due to too large an angle, a maximum adjustable angle is set to ensure the filtering effect of the filter unit 11 on the air flow.

[0064] Furthermore, to ensure the lint filtering effect of the filter unit 11, as the angle between the filter unit 11 and the radial cross-section of the door body 1 increases, the size of the mesh structure of the filter unit 11 is also correspondingly increased; the larger the angle between the filter unit 11 and the radial cross-section of the door body 1, the larger the filtering holes of the mesh structure.

[0065] Further, the filtering unit 11 further includes a cleaning unit 12 and a driving device 14. The cleaning unit 12 is disposed on the surface of the filtering unit 11, and the driving device 14 is configured to drive the cleaning unit 12 and / or the filtering unit 11 to move relatively. It should be noted that when the cleaning unit 12 is fixedly arranged relative to the door body 1, the driving device 14 is configured to drive the filtering unit 11 to slide relative to the cleaning unit 12; when the filtering unit 11 is fixedly arranged relative to the door body 1, the driving device 14 is configured to drive the cleaning unit 12 to slide relative to the filtering unit 11.

[0066] Further, to ensure the cleaning effect of the cleaning unit 12 on the filtering unit 11, after the cleaning unit 12 and the filtering unit 11 are installed in place, the cleaning unit 12 at least covers the cross-section of the filtering unit 11 in a certain direction. Specifically, in this embodiment, as Figure 2 or Figure 3 shown, the cleaning unit 12 is a long strip-shaped brush. After the brush and the filtering unit 11 are installed in place relative to the door body, the brush covers the cross-section of the filtering unit 11 in the up and down direction relative to the door body 1. When cleaning the filtering unit 11, the brush moves left and right relative to the door body on the filtering unit 11 to ensure that the residual lint on the surface of the filtering unit 11 is cleaned up.

[0067] As a specific implementation manner of this embodiment, the driving device 14 includes a transmission unit, a mounting member, and a motor; the mounting member is fixedly installed on the door body 1 and is at least used to fix the transmission unit, and the motor drives the cleaning unit 12 and / or the filtering unit 11 to move relatively through the transmission unit; the motor can be fixed on the door body 1 or on the transmission unit.

[0068] The transmission unit is a ball screw. The working principle of the ball screw is that during operation, the nut is connected to the component that needs to perform a linear reciprocating motion. When the screw rotates, it drives the nut to perform a linear reciprocating motion, thereby driving the component to perform a linear reciprocating motion. In the present invention, the cleaning unit 12 is fixed to the nut of the ball screw and covers the filtering unit 11 in a direction perpendicular to the nut. When the ball screw works, the nut drives the cleaning unit 12 to perform a linear reciprocating motion on the filtering unit 11 to achieve the cleaning of the residual lint on the surface of the filtering unit 11.

[0069] Further, to ensure the cleaning effect of the cleaning unit 12 on the filtering unit 11, in this embodiment, the cleaning unit 12 is a rectangular filter screen, and the ball screw is arranged on one side of the rectangular filter screen. It should be noted that the side where the ball screw is installed means that the ball screw can be installed on the rectangular filter screen or installed with a certain gap 13 from the edge of the filter screen. When there is a certain gap 13 between the ball screw and the edge of the filter screen, the side where the ball screw is installed is the edge of the filter screen closest to the ball screw; the length of the ball screw is greater than the length of the installation side of the rectangular filter screen, and the length of the cleaning unit 12 is greater than the length of the adjacent side of the installation side of the rectangular filter screen; during the reciprocating movement of the cleaning unit 12 driven by the ball screw, all positions of the filtering unit 11 are covered.

[0070] Further, to ensure the filtering effect of the rectangular filter screen, the cleaning unit 12 has an initial position on the rectangular filter screen. The initial position is any adjacent side of the installation side of the rectangular filter screen. It should be noted that the initial position can be at the edge of the rectangular filter screen or have a gap 13 from the edge of the rectangular filter screen. Before and after cleaning the filtering unit 11, the cleaning unit 12 is in the initial position to prevent the filter screen from being blocked by the cleaning unit 12 during the process of filtering lint, thus affecting the lint filtering efficiency of the filter screen.

[0071] Further, the ball screw can be installed at the upper and lower edges of the rectangular filter screen relative to the door body 1, or installed on the left and right edges of the rectangular filter screen relative to the door body 1; when the ball screw is installed at the upper and lower edges of the rectangular filter screen relative to the door body 1, the cleaning unit 12 reciprocates in the left and right directions of the rectangular filter screen relative to the door body 1 when it is in the working state, and when the ball screw is installed on the left and right edges of the rectangular filter screen relative to the door body 1, the cleaning unit reciprocates in the up and down directions of the rectangular filter screen relative to the door body 1 when it is in the working state.

[0072] Further, the collecting device 15 is installed at the lower end of the rectangular filter screen, and there is a certain interval between the lower edge of the filter screen to prevent the cleaning unit 12 from taking the residual lint in the collecting device 15 away from the collecting device 15 during the process of cleaning the filter screen.

[0073] Further, to improve the filtering effect of the filtering unit 11 on lint, the filtering unit 11 is provided with multiple layers of filter screens spaced apart in the axial direction of the door body 1, and there is a gap 13 between the filter screen closest to the door body 1 and the inner side of the door body 1. The gap 13 is communicated with the circulating air duct, and the airflow in the circulating air path is filtered by the lint separation device during the process of blowing towards the door body 1.

[0074] Further, to ensure the cleaning effect of the cleaning unit 12 on the multi-layer filter screen, a cleaning unit 12 is provided for each layer of the filter screen. In this embodiment, multiple cleaning units 12 are fixed by the nuts of the ball screw. When the cleaning unit 12 needs to clean, multiple cleaning units 12 clean each layer of the filter screen simultaneously; alternatively, multiple ball screws are installed, and the cleaning unit 12 on each layer of the filter screen is fixed to the nut of a ball screw. When the cleaning unit 12 needs to clean, multiple cleaning units 12 can clean each layer of the filter screen machine simultaneously, or can independently clean each layer of the filter screen according to the lint residue on each layer of the filter screen.

[0075] Further, to improve the cleaning effect of the cleaning unit 12 on the filter screen, the cleaning unit 12 is arranged on the side of the filter screen away from the door body 1, and the cleaning unit 12 can be an electric brush or a soft scraper.

[0076] Further, to improve the installation convenience and replacement convenience of the lint separation device of the present invention, the filter screen, the cleaning unit 12, the ball screw, etc. are all independently detachable and installable relative to the door body 1.

[0077] The present invention also discloses a lint collection and identification method that can be realized by a lint separation device of a dryer. The lint separation device of the present invention is equipped with a wind resistance detection device, which is communicatively connected to the dryer and used to detect the real-time partial resistance of the filter unit 11. The wind resistance detection device has a set wind resistance threshold. When the real-time wind resistance detected by the wind resistance detection device for the filter unit 11 exceeds the set threshold, it indicates that some filter holes on the filter unit 11 are blocked by lint. At this time, the control unit of the dryer controls the motor to operate, and the motor drives the nut of the ball screw to reciprocate on the screw. The cleaning unit 12 fixedly installed on the ball screw nut reciprocates on the surface of the filter unit 11 along with the ball screw nut to clean the residual lint on the filter unit 11. The lint cleaned from the filter unit 11 falls by gravity into the collection device 15 below the filter unit 11; the lint separation device of the present invention improves the lint filtering efficiency of the dryer and enhances the user experience.

[0078] As another specific implementation manner of this embodiment, as Figure 3 shown, different from the above implementation manner, the transmission unit is a transmission gear set 14. The transmission gear set 14 is fixed relative to the door body 1. The filter unit 11 is installed on the inner side of the door body 1 through the transmission gear set 14 and forms a gap 13 with the inner side of the door body 1; the cleaning unit 12 is fixed relative to the door body 1 on the surface of the filter unit 11 through a mounting member and moves relative to the cleaning unit 12 under the transmission of the transmission gear set 14, thereby cleaning the residual lint on the filter unit 11.

[0079] Further, the filtering unit 11 covers the cross-section of the filtering air duct facing the door body 1 to block lint. The transmission gear set 14 is composed of a motor driving two parallel and spaced-apart rotating shafts through gears. The motor can drive one rotating shaft to rotate through gears, and the filtering unit 11 drives the other rotating shaft to rotate under the drive of the rotating shaft. Alternatively, the motor can directly drive the two rotating shafts to rotate through gears.

[0080] Specifically, both ends of the filtering unit 11 are respectively wound around the two rotating shafts, and the relative displacement between the filtering unit 11 and the cleaning unit is driven by the rotation of the two rotating shafts. To ensure that the filtering unit 11 can fully cover the cross-section of the filtering air duct facing the door body 1, the two rotating shafts are respectively arranged on opposite sides of the filtering air duct. Therefore, the filtering unit 11 is set as a flexible filter net or flexible net plate that can freely deform.

[0081] Further, to simplify the cleaning process, the cleaning unit is arranged close to the rotating shaft. During the cleaning process, the two rotating shafts only need to continuously rotate in the direction of the cleaning unit to fully clean the lint attached to the surface of the filtering unit 11. Or, considering the length of the filtering unit 11, the cleaning unit can also be arranged at the position between the two rotating shafts. Although the two rotating shafts need to rotate in two different directions to fully clean the lint, the length of the filtering unit 11 is shortened, reducing the production cost.

[0082] Further, two cleaning units are arranged on the filtering unit 11, and the two cleaning units are respectively arranged on both sides of the filtering unit 11, which can better clean the lint on the filtering unit 11.

[0083] As another specific implementation manner of this embodiment, the transmission gear set 14 includes two rotating shafts, and the two rotating shafts are arranged parallel to each other at intervals. The two ends of the filtering unit 11 are connected end to end to form an annular track belt, which is sleeved on the two rotating shafts. Even if the two rotating shafts always rotate in the same direction, the lint filtering effect will not be affected due to the insufficient length of the filtering unit 11.

[0084] Further, when two cleaning units are arranged on the filtering unit 11, the two cleaning units are respectively arranged close to the two rotating shafts, that is, no matter which direction the two rotating shafts rotate, the lint will not cross the cleaning unit, reducing the problem that the lint is carried away by the movement of the filtering unit 11 to the side of the filter net close to the gap 13, resulting in the lint falling into the gap 13.

[0085] To further improve the cleaning effect of the lint, cleaning units are arranged on both surfaces of the filtering unit 11 far from the inner side of the door body 1, which can better achieve the cleaning of the lint.

[0086] In this embodiment, the lint collection and recognition method can be realized as follows: a wind resistance detection device is installed in the lint separation device of the dryer. The wind resistance detection device is communicatively connected to the dryer and is used to detect the real-time partial resistance of the filtering unit 11. The wind resistance detection device has a set wind resistance threshold. When the wind resistance detection device detects that the real-time wind resistance of the filtering unit 11 exceeds the set threshold, it indicates that some of the filtering holes on the filtering unit 11 are blocked by lint. At this time, the control unit of the dryer controls the motor to operate. The motor drives the rotating shaft to rotate. The filtering unit 11 moves relative to the cleaning unit driven by the rotating shaft. When the filtering unit 11 passes by the cleaning unit, the cleaning unit scrapes the residual lint on the cleaning unit into the collection device 15 below the filtering unit 11.

[0087] The above are only the preferred embodiments of the present invention, and there is no limitation to the present invention in any form. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present invention, can make some changes or modifications using the technical content prompted above into equivalent embodiments of equivalent changes. The implementation schemes in the above embodiments can also be further combined or replaced. However, as long as the content does not depart from the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the present invention.

Claims

1. A lint separation device for a dryer, the dryer comprising a door body (1), characterized in that, A lint separation device is provided inside the door body (1), characterized in that the lint separation device includes, a filtering unit (11), which forms a gap (13) with the inside of the door body (1); a collection device (15), the collection device (15) is located at the lower end of the filtering unit (11), the gap (13) is communicated with the circulating air duct.

2. The lint separation device for a dryer according to claim 1, characterized in that, the filtering unit (11) forms an angle with the radial cross-section of the door body (1); the size of the angle is proportional to the projected distance of the filtering unit (11) in the axial direction of the door body (1); the width of the collection device (15) is adapted to the projected distance of the filtering unit (11) in the axial direction of the door body (1).

3. The lint separation device for a dryer according to any one of claims 1 or 2, characterized in that, the lint separation device further includes a cleaning unit and a driving device; the cleaning unit is arranged on the surface of the filtering unit (11); the driving device is used to drive the cleaning unit (12) and / or the filtering unit (11) to move relatively.

4. The lint separation device for a dryer according to claim 3, characterized in that, the driving device includes a transmission unit, a mounting member and a motor; the mounting member is fixed on the door body (1) and is at least used to fix the transmission unit; the motor drives the cleaning unit (12) and / or the filtering unit (11) to move relatively through the transmission unit.

5. The lint separation device for a dryer according to claim 4, characterized in that, the transmission unit is a ball screw, the cleaning unit (12) is installed on the nut of the ball screw and forms a gap (13) with the inside of the door body (1); the cleaning unit (12) reciprocates on the surface of the filtering unit under the drive of the ball screw; the moving distance of the cleaning unit (12) on the ball screw is adapted to the length of the filtering unit (11).

6. The lint separation device for a dryer according to claim 4, characterized in that, the transmission unit is a transmission gear set (14), the filtering unit (11) is installed inside the door body (1) through the transmission gear set (14) and forms a gap (13) with the inside of the door body (1); the cleaning unit (12) is fixed on the surface of the filtering unit (11) relative to the door body (1) through the mounting member; the filtering unit (11) moves relatively with the cleaning unit (12) under the transmission of the transmission gear set (14).

7. The lint separation device for a dryer according to any one of claims 5 or 6, characterized in that, the cleaning unit (12) and the filtering unit (11) move up and down or left and right relative to the door body (1); and the cleaning unit (12) covers the cross-section of the filtering unit (11).

8. The lint separation device for a dryer according to claim 7, characterized in that, there is a gap (13) between the filtering unit (11) and the collection device (15).

9. The lint separation device for a dryer according to any one of claims 1-8, characterized in that, the filtering unit (11) is provided with multiple layers of filter nets at intervals in the axial direction of the door body (1); A cleaning unit (12) is provided on the surface of each layer of the filter net; The cleaning unit (12) is arranged on the side of the filter net away from the gap (13); The cleaning unit (12) or the filter net is detachably arranged on the mounting member.

10. A method for realizing lint collection and recognition applicable to the lint separation device of the dryer according to any one of claims 1-9, characterized in that, The lint separation device of the dryer further includes, A wind resistance detection device, which is communicatively connected to the dryer and is used to detect the real-time wind resistance of the filter unit (11); When the wind resistance detection device detects that the real-time wind resistance of the filter unit (11) exceeds the set threshold, the driving device drives the cleaning unit to clean the surface of the filter unit (11).

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