Thread and scrap separating device of clothes dryer and clothes dryer

Abstract

The invention provides a clothes dryer thread and scrap separating device and a clothes dryer, the clothes dryer thread and scrap separating device comprises a filtering unit, a cleaning unit and a traction device, the filtering unit is arranged on the inner side of a door body, a gap communicated with a circulating air duct is formed between the filtering unit and the inner side of the door body, and the gap is communicated with the circulating air duct of the clothes dryer; the filtering unit can movably clean the surface of the unit, one end of the traction device is connected with the cleaning unit, the other end of the traction device is independent of the door body, and in the door body opening process, the traction device drags the cleaning unit to move on the surface of the filtering unit, so that residual thread scraps on the surface of the filtering unit are cleaned, and accumulation of the thread scraps on the surface of the filtering unit is prevented. The thread scrap processing efficiency of the thread scrap separating device is improved, and then the clothes drying effect of the clothes dryer is improved.

Description

Technical Field

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

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

[0004] Chinese Patent Invention with 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 snap-fitted and installed under the door body of the front air duct at the air outlet of the drum of the clothes dryer. The third lint filtering layer is arranged in the internal air duct of the clothes dryer. The lint is filtered and collected through multiple filtering layers, and the filtering device is taken out for cleaning; in the above solution, the filtering device needs to be cleaned by the user in time. Once the user fails to clean the filtering device in time, excessive lint will accumulate on the surface of the filtering device, resulting in too large air resistance and affecting the filtering effect.

[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 clothes dryer in view of the above problems in the prior art. The lint separation device for a clothes dryer includes a filtering unit, a cleaning unit and a traction device. The filtering unit is arranged inside the door body and forms a gap communicating with the circulating air duct between the filtering unit and the inner side of the door body. The filtering unit is movable on the surface of the cleaning unit. One end of the traction device is connected to the cleaning unit, and the other end is independently arranged from the door body. During the opening process of the door body, the traction device pulls the cleaning unit to move on the surface of the filtering unit to clean the residual lint on the surface of the filtering unit, prevent the lint from accumulating on the surface of the filtering unit, and improve the lint processing efficiency of the lint separation device.

[0007] Another object of the present invention is to provide a dryer using the above lint separation device. Since the cleaning unit provided in the dryer will clean the residual lint on the surface of the cleaning and filtering unit every time the door of the dryer is opened or closed, it ensures that the filtering unit is always in a clean state, avoids excessive accumulation of lint on the filtering unit that affects the filtering efficiency of the surface of the filtering unit, and thereby improves the drying efficiency of the dryer.

[0008] To achieve the above object, in a first aspect of the present invention, a lint separation device for a dryer is provided. The dryer includes a door body, and a filtering assembly is provided inside the door body. The filtering assembly includes:

[0009] A filtering unit, fixed inside the door body, and forming a gap communicating with the circulating air duct between the filtering unit and the inside of the door body;

[0010] A cleaning unit, movably disposed on the surface of the filtering unit for cleaning the filtering unit;

[0011] A traction device, one end of which is connected to the cleaning unit and the other end is independently disposed from the door body;

[0012] During the opening process of the door body, the traction device pulls the cleaning unit to move on the surface of the filtering unit.

[0013] In the above solution, the filtering assembly includes a filtering unit fixed inside the door body, a movable cleaning unit is provided on the filtering unit, and a traction device is provided. One end of the traction device is connected to the cleaning unit, and the other end is independently disposed from the door body. During the opening process of the door body, the end independently disposed from the door body pulls the cleaning unit to move on the surface of the filtering unit, cleaning the lint on the surface of the filtering unit, preventing excessive residual lint on the surface of the filtering unit from causing too large a wind resistance, and thereby improving the lint filtering effect of the lint separation assembly.

[0014] Optionally, an elastic element, one end of which is relatively fixed to the door body and the other end is connected to the cleaning unit. The elastic element has an initial acting force on the cleaning unit, and the initial acting force is an elastic force or a tensile force;

[0015] When the door body is in a closed state, the elastic element is in an initial position under the action of the initial acting force.

[0016] In the above solution, the filtering assembly is provided with an elastic element. One end of the elastic element is fixed to the door body and the other end is connected to the cleaning unit, and forms an initial acting force on the cleaning unit. When the door body is in a closed state, the cleaning unit is in an initial position under the action of the initial acting force. During each opening and closing process of the door body, the cleaning unit is respectively acted on by the traction device and the elastic element to move back and forth on the surface of the filtering unit, realizing the cleaning of the residual lint on the surface of the filtering unit every time the door body is opened and closed, and ensuring the lint filtering efficiency of the filtering assembly.

[0017] Optionally, the filtering unit includes a filter screen and a frame. The filter screen is disposed in the middle along the edge of the frame. The filter screen is fixed to the door body through the frame, and an opening communicating with the circulating air duct is provided on the frame close to one side of the door body.

[0018] When the cleaning unit is in the initial position, at least a part of it abuts against the frame on the side away from the door body.

[0019] In the above solution, the filter screen is installed on the door body through the frame. When the cleaning unit is in the initial position, at least a part of it abuts against the side of the frame away from the door body. The frame is used to define the moving range of the cleaning unit on the surface of the filtering unit during the opening and closing process of the door body, improving the stability of the cleaning unit during the cleaning process of the filtering unit.

[0020] Optionally, the cleaning unit includes a rotating shaft. The frame is a fan-shaped or trapezoidal area. The rotating shaft is arranged at the vertex of the fan shape or the upper end of the upper edge of the trapezoid. The cleaning unit rotates within the range defined by the frame around the cleaning unit. The frames located at both ends of the rotation direction of the cleaning unit respectively define the initial position and the end position of the rotation of the cleaning unit.

[0021] In the above solution, the cleaning unit realizes the cleaning of lint on the surface of the filtering unit by rotating around the rotating shaft. During the opening and closing process of the door body, the cleaning unit rotates around the rotating shaft, improving the stability of the cleaning unit in cleaning lint. And the movement path of the cleaning unit around the rotating shaft is fan-shaped, and the shape of the frame is adapted to the rotation path of the cleaning unit. The rotating shaft is preferably arranged at the vertex position of the fan shape. The frames at the edge radius of the fan shape are respectively used as the initial position and the end position of the rotation of the cleaning unit. The setting method of the cleaning unit around the rotating shaft improves the stability of the cleaning unit when cleaning the filtering unit.

[0022] Optionally, the elastic element is a torsion spring. The torsion spring is arranged on the rotating shaft of the cleaning unit and has an initial elastic force to make the cleaning unit in the initial position.

[0023] In the above solution, the elastic element is a torsion spring, which is arranged at the rotating shaft. The torsion spring has a simple structure and does not occupy the space in front of the filtering unit when arranged at the rotating shaft. While ensuring the filtering efficiency of the filtering unit, it can also realize the reset of the cleaning unit after movement, ensuring the cleaning efficiency of the cleaning unit for the residual lint on the surface of the filtering unit.

[0024] Optionally, the elastic element is a tension spring or a tension elastic band. The tension spring or the tension elastic band is arranged in the middle or at the end of the cleaning unit except the rotating shaft and has an initial elastic force or tension to make the cleaning unit in the initial position.

[0025] In the above solution, the elastic element is a tension spring or a tension elastic band provided in the middle or end of the cleaning unit except for the rotating shaft, which can increase the acting force of the elastic element on the cleaning unit, and further ensure that the acting force received by the cleaning unit during the closing process of the door body is sufficient to ensure its reset.

[0026] Optionally, when one end of the elastic element is fixed on the side close to the rotating shaft of the door body, the initial acting force of the elastic element on the cleaning unit is elastic force;

[0027] When one end of the elastic element is fixed on the side of the door body far from the rotating shaft of the door body, the initial acting force of the elastic element on the cleaning unit is tensile force.

[0028] In the above solution, the elastic unit can select the initial acting force as elastic force or tensile force according to the fixed position on the door body, improving the applicability of this solution.

[0029] Optionally, the traction device traction the cleaning unit through a pulley set provided on the door body;

[0030] Both ends of the traction device are respectively fixed on the cleaning unit and the rotating shaft of the door body;

[0031] An opening for the traction rope to pass through is opened in the frame close to the rotating shaft of the door body.

[0032] In the above solution, the traction device traction the cleaning unit through a sliding group provided on the door body. On the one hand, the pulley set limits the traction path of the traction device and optimizes the setting method of the traction device; on the other hand, it reduces the friction during the traction process and improves the energy utilization rate during the opening and closing of the door body. At this time, the end of the traction device independent of the door body is set on the rotating shaft of the door body, and the traction device converts the displacement of the door body relative to the rotating shaft during the opening and closing of the door body into the displacement of the cleaning unit on the surface of the filtering unit.

[0033] Optionally, a plurality of filtering units spaced apart from each other are provided in the frame, and a cleaning unit is provided on each filter screen. A collecting device covering the plurality of filtering units is provided at the lower end of the filtering unit.

[0034] In the above solution, a plurality of filtering units spaced apart from each other are provided in the frame, improving the lint filtering effect of the lint separation device. And a cleaning unit is provided on the surface of each filtering unit. A collecting device covering the plurality of filtering units is provided at the lower end of the filtering unit. The lint cleaned by the cleaning unit falls into the collecting device provided in the filtering unit.

[0035] The first aspect of the present invention provides a dryer, which applies the lint separation device in the above solution. The area of the filtering unit covers the filtering air duct of the dryer, and the residual lint of the filtering unit can be cleaned and collected in time, improving the drying efficiency of the dryer.

[0036] The beneficial effects of the present invention are as follows:

[0037] 1. A filtering unit is arranged on the inner side of the dryer door body, a gap communicating with the circulating air duct is formed between the filtering unit and the inner side of the door body, and a cleaning unit is arranged on the surface of the filtering unit. By connecting the cleaning unit and a traction device independently arranged from the door body at both ends respectively, during the opening process of the door body, the traction device traction the cleaning unit to clean the residual lint on the surface of the filtering unit, avoiding excessive air resistance caused by the accumulation of lint on the surface of the filtering unit, and further affecting the lint filtering effect of the dryer and the drying efficiency of the dryer.

[0038] 2. A spring with one end relatively fixed to the door body and the other end connected to the cleaning unit and having an initial acting force is used to realize the reset of the cleaning unit during the closing process of the door body, ensuring that during each opening and closing process of the door body, the cleaning unit is respectively affected by the acting forces of the traction device and the elastic element, and will clean the residual lint on the surface of the filtering unit, improving the lint cleaning effect of the cleaning unit.

[0039] 3. The traction device of the present invention traction the cleaning unit through a pulley group arranged on the door body. On the one hand, the pulley group limits the traction path of the traction device and optimizes the setting mode of the traction device; on the other hand, it reduces the friction during the traction process, improves the energy utilization rate during the opening and closing process of the door body, and further ensures the cleaning effect of the cleaning unit on the filtering unit. Brief Description of the Drawings

[0040] Figure 1 It is a schematic structural diagram of the lint separation device of the dryer according to Embodiment 1 of the present invention.

[0041] Figure 2 It is a schematic diagram of a setting mode of the initial position or the end position of the cleaning unit according to Embodiment 1 of the present invention.

[0042] Figure 3 It is a schematic diagram of another setting mode of the initial position or the end position of the cleaning unit according to Embodiment 1 of the present invention.

[0043] Figure 4 It is a schematic structural diagram of the lint separation device of the dryer according to Embodiment 2 of the present invention.

[0044] Figure 5 It is a schematic diagram of a setting mode of the initial position or the end position of the cleaning unit according to Embodiment 2 of the present invention.

[0045] Figure 6 It is a schematic diagram of another setting mode of the initial position or the end position of the cleaning unit according to Embodiment 2 of the present invention.

[0046] Figure 7 is Figure 4 an enlarged schematic diagram of area A in

[0047] In the figure: 1. Door body; 10. Gap; 11. Filter unit; 12. Cleaning unit; 121. Rotating shaft; 13. Elastic element; 14. Frame; 15. Collection device; 16. Traction device; 17. Transmission device; 171. Transmission gear; 1712. Transmission rod; 172. Driven gear; 174. Transmission. Specific embodiments

[0048] The exemplary embodiments of the present invention will be described in more detail below 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.

[0049] In the description of the present invention, unless otherwise clearly specified and limited, the terms "arrangement" and "connection" should 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.

[0050] 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 accompanying 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.

[0051] 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; the lint separation device in the prior art is generally 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 separation device, the filter screen needs to be cleaned frequently to prevent blockage. Even if the filter screen is cleaned frequently, it will increase the workload of the dryer, and thus reduce the filtering efficiency to a certain extent.

[0052] The following specifically describes a lint separation device for a dryer according to the present invention with specific embodiments.

[0053] Embodiment 1

[0054] A lint separation device for a dryer provided by the present invention. A filtering assembly is arranged inside the door body 1. The filtering assembly includes a filtering unit 11. The filtering unit 11 is fixed inside the door body 1 and forms a gap 10 communicating with the air inlet of the circulating air duct between the filtering unit 11 and the inner side of the door body 1. A cleaning unit 12 is movably arranged on the surface of the filtering unit 11 for cleaning the filtering unit 11. A traction device 16 has one end connected to the cleaning unit 12 and the other end is arranged independently of the door body 1. During the opening and closing process of the door body 1, the cleaning unit 12 is tractioned by the traction device 16 to slide on the surface of the filtering unit 11, so as to clean the residual lint on the surface of the filtering unit 11. When the user opens and closes the door body 1, the lint on the surface of the filtering unit 11 can be cleaned, simplifying the lint cleaning process of the filtering unit 11 and improving the lint separation efficiency of the dryer.

[0055] Further explanation of the traction force of the traction device 16: The length of the traction device 16 remains unchanged. During the opening process of the door body 1, the distance between the end of the traction device 16 arranged independently of the door body 1 and the door body 1 gradually increases. Therefore, the other end connected to the cleaning unit 12 moves on the door body 1 to ensure that the overall length of the traction device 16 remains unchanged, realizing the cleaning of the cleaning unit 12.

[0056] Further explanation of the installation position of the filtering unit 11 on the door body 1: As is well known to those skilled in the art, generally, an observation window is provided at the front end of the dryer door body, and the observation window is a flat surface as a whole. The filtering unit 11 of the present invention is preferably installed on the observation window of the door body.

[0057] When the traction device 16 is made of a rigid material, such as a rigid rod, during the closing process of the door body 1, the cleaning unit 12 is also affected by the force of the traction device 16 to move on the surface of the filtering unit 11 until the door body 1 is closed, and the cleaning unit 12 is reset.

[0058] Furthermore, when the traction device 16 is made of a flexible material, such as a soft traction rope, as another implementation manner, during the opening process of the door body 1, the cleaning unit 12 is pulled by the traction rope from the lower end of the door body 1 to the upper end of the door body 1 to store gravitational potential energy. When the door body 1 is closed, the cleaning unit 12 is reset under the action of gravity.

[0059] When the cleaning unit 12 moves left and right relative to the door body 1 during the opening process of the door body 1, it is unable to apply a resetting force to the cleaning unit 12 when the door body 1 is closed. At this time, the filtering component includes an elastic element 13. One end of the elastic element 13 is relatively fixed to the door body 1, and the other end is connected to the cleaning unit 12. When the door body 1 is in the closed state, the elastic element 13 has an initial force on the cleaning unit 12, and the initial force can be an elastic force or a tensile force. When the door body 1 is closed, the cleaning element is in the initial position under the action of the elastic force or tensile force of the elastic element 13. During the opening process of the door body 1, the traction force of the traction device 16 on the cleaning unit 12 is greater than the elastic force or tensile force of the elastic element 13 on the cleaning unit 12. The cleaning unit 12 moves on the surface of the filtering unit 11 under the action of the traction force of the traction device 16 to clean the filtering unit 11. During the closing process of the door body 1, the traction force of the traction device 16 on the cleaning unit 12 disappears, and the filtering unit 11 resets to the initial position under the action of the elastic force or tensile force of the elastic element 13. Each time the door body 1 opens and closes, the cleaning unit 12 will complete two cleanings of the lint on the surface of the cleaning unit 12, thereby ensuring that the air resistance on the surface of the cleaning unit 12 is at a relatively low level and ensuring the drying performance of the dryer.

[0060] Further explanation of the elastic force or tensile force of the elastic element 13: When one end of the elastic element 13 is fixed on the side of the door body 1 close to the rotating shaft 121 and the other end is connected to the cleaning unit 12, the initial force of the elastic element 13 on the cleaning unit 12 is an elastic force. When one end of the elastic element 13 is fixed on the side of the door body 1 far from the rotating shaft 121 and the other end is connected to the cleaning unit 12, the initial force of the elastic element 13 on the cleaning unit 12 is a tensile force. During the process of the door body 1 moving from the closed state to the open state, the cleaning unit 12 moves from the side far from the rotating shaft 121 of the door body 1 to the side close to the rotating shaft 121 of the door body 1 to clean the lint on the surface of the filtering unit 11.

[0061] Further, the filtering unit 11 includes a filter screen and a frame 14. The frame 14 has a certain thickness. The filtering unit 11 is fixed to the door body 1 through the frame 14. After the filtering unit 11 is installed on the door body 1 through the frame 14, the frame of the filtering unit 11 is divided into an inner part and an outer part. The frame 14 on the side close to the door body 1 is used to install the filtering unit 11 and forms a gap 10 communicating with the air inlet of the circulating air duct between the frame 14 and the inner side of the door body 1. The frame 14 on the side far from the door body 1 is used to define the initial position and the end position of the cleaning unit 12 moving on the filtering unit 11. The gap 10 can be formed by directly pasting the frame 14 on the door body 1 at the pasting position of the filtering unit 11 and the frame 14 on the door body 1. Those skilled in the art should understand that on the side of the filtering unit 11 close to the door body 1, the frame 14 is provided with an opening communicating with the air inlet of the circulating air duct. The opening is formed by the frame 14 being recessed or the end part / entirely not provided with the frame 14 near the air inlet for the gap 10 to communicate with the air inlet. Correspondingly, on the side of the filtering unit 11 far from the door body 1, the lower end of the filtering unit 11 is not provided with the frame 14, and a collecting device 15 is provided. The lint on the filtering unit 11 is scraped off by the cleaning unit 12 into the collecting unit 16.

[0062] Further, as Figure 2 shown in Figure 3 As an implementation manner of this embodiment, when the cleaning unit 12 cleans the filtering unit 11, it works within the range defined by the frame 14 and moves left and right on the filtering unit 11 to achieve the cleaning of the filtering unit 11. The two frames 14 in the moving direction of the cleaning unit 12 on the filtering unit 11 respectively define the initial position and the end position of the cleaning unit 12. When the cleaning unit 12 is in the initial position, at least part of it abuts against the frame 14 on the side far from the door body 1. When the door body 1 is opened to the end position, at least part of the cleaning unit 12 abuts against the frame 14 in the direction opposite to the initial position, so that the cleaning path of the cleaning unit 12 covers the entire filtering unit 11 during the cleaning process of the filtering unit 11, ensuring the cleaning effect of the cleaning unit 12 on the filtering unit 11.

[0063] Further, as another implementation manner of this embodiment, the traction device 16 is an elastic traction rope. During the process of the door body 1 being opened from the closed state to a certain angle, the cleaning unit 12 reaches the end position from the initial position on the surface of the filtering unit 11. When the cleaning unit 12 reaches the end position, the door body 1 does not necessarily need to be opened to the maximum angle. After the cleaning unit 12 reaches the end position, during the process of the opening angle of the door body 1 continuing to increase, the elastic traction rope is in a stretched state, and the user adaptively adjusts the opening angle of the door body 1 when the cleaning unit 12 reaches the end position, improving the applicability of this solution.

[0064] Further, asFigure 2 and Figure 3 As shown, as a specific implementation of this embodiment, a rotating shaft 121 is set at one end of the cleaning unit 12, and the rotating shaft 121 can be installed on the frame 14 or on the inner side of the door body 1. The frame 14 or the door body 1 is provided with a mounting hole for the rotating shaft 121, and the rotating shaft 121 is assembled in the mounting hole. The cleaning unit 12 rotates on the surface of the filter unit 11 around the rotating shaft 121, and the shape of the filter unit 11 is adapted to the rotation path of the cleaning unit 12. When the door body 1 is opening, the rotating end of the cleaning unit 12 rotates from the initial position to the terminal position to clean the residual wire scraps on the surface of the filter unit 11; after the door body 1 is closed, the rotating end of the cleaning unit 12 is reset to the initial position.

[0065] Furthermore, the rotating shaft 121 of the cleaning unit 12 is fixed at the upper end of the central axis of the door body 1, and the shape of the filter unit 11 is fan-shaped or trapezoidal. The frame 14 is arranged at the edge of the filter unit 11 and is adapted to the shape of the filter unit 11. The fixed end of the elastic element 13 is installed on the side away from the rotating axis of the door body 1. When the door body 1 is in a closed state, the cleaning unit 12 is subjected to the spring tension and is against the frame 14 on the side away from the rotating axis of the door body 1. During the opening process of the door body 1, the cleaning unit 12 moves from the frame 14 on the side away from the rotating axis of the door body 1 to the frame 14 on the side close to the rotating axis of the door body 1, and scrapes the residual wire scraps on the filter unit 11 into the collecting device 15 at the lower end of the filter unit 11, thereby completing the cleaning of the filter unit 11.

[0066] Furthermore, the cleaning unit 12 includes a rotating shaft 121, the frame 14 is a fan-shaped area, the rotating shaft 121 is set at the vertex position of the fan, the frame 14 at least includes an edge set at the radius part of the fan, the cleaning unit 12 rotates around the rotating shaft 121 within the range defined by the frame 142, and the frames 14 at both ends of the rotation direction of the cleaning unit 12 respectively define the initial position and the end position of the cleaning unit 12 rotation; the cleaning unit 12 cleans the surface of the filter unit 11 by rotating around the rotating shaft 121, and the door body 1 opens and closes During the process, the cleaning unit 12 rotates around the rotating shaft 121, which improves the stability of the cleaning unit 12 in cleaning the wire scraps, and the movement path of the cleaning unit 12 around the rotating shaft 121 is fan-shaped. The shape of the frame 14 is adapted to the rotation path of the cleaning unit 12, and the rotating shaft 121 is preferentially set at the vertex of the sector. The two frames 14 at the edge radius of the sector serve as the initial position and the end position of the rotation of the cleaning unit 12 respectively. The setting method of the cleaning unit 12 around the rotating shaft 121 improves the stability of the cleaning unit 12 when cleaning the filter unit 11.

[0067] Further, such as Figures 1 to 3As shown, when the frame 14 is a trapezoidal area, correspondingly, the shape of the filtering unit 11 is adapted to the shape of the frame 14; the rotating shaft 121 is arranged at the upper end or the lower end of the symmetry axis of the trapezoidal area and there is a gap between it and the upper end or the lower end, ensuring that during the process of the cleaning unit 12 rotating around the rotating shaft 121, it can cover the entire trapezoidal area. In the schematic diagram of this embodiment, the rotating shaft is arranged at the upper end of the trapezoidal area, and there is a certain distance between the rotating shaft 121 and the upper edge of the trapezoidal area. The cleaning unit 12 moves on the surface of the filtering unit 11 around the rotating shaft 121, and the area formed by the moving path is not less than the cross-sectional area of the filtering unit 11, ensuring that the residual lint on the surface of the filtering unit 11 is completely cleaned. It should be noted that, Figure 2 or Figure 3 Any position in Figure 2 can be used as the initial position or the termination position. Preferably, Figure 3 the position shown is the initial position,

[0068] Furthermore, as a specific implementation manner of this embodiment, the elastic element 13 is a torsion spring. The torsion spring is arranged at the rotating shaft 121 of the cleaning unit 12 and has an initial tensile force or elastic force to ensure that the cleaning unit 12 is in the initial position when the door body 1 is closed, and during the process of the door body 1 opening to closing, the cleaning unit 12 is restored from the termination position to the initial position, ensuring that each time the door body 1 opens and closes, the cleaning unit 12 processes the residual lint on the surface of the filtering unit 11, preventing excessive wind resistance caused by excessive accumulation of lint on the surface of the filtering unit 11 and improving the drying effect of the dryer.

[0069] Furthermore, as another specific implementation manner of this embodiment, the elastic element 13 is a tension spring or a tension elastic band. The tension spring or the tension elastic band is arranged in the middle or at the end of the cleaning unit 12 except the rotating shaft 121 and has an initial tensile force or elastic force to ensure that the cleaning unit 12 is in the initial position when the door body 1 is closed, and during the process of the door body 1 opening to closing, the cleaning unit 12 is restored from the termination position to the initial position, ensuring that each time the door body 1 opens and closes, the cleaning unit 12 processes the residual lint on the surface of the filtering unit 11. Different elastic elements 13 are selected according to the actual situation of the dryer to improve the applicability of this solution.

[0070] Specifically, when the door body 1 is in the closed state, the cleaning unit 12 is in the initial position under the action of the elastic element 13. The force of the elastic element 13 on the cleaning unit 12 is proportional to the distance of the cleaning element from the initial position, and the maximum force of the elastic element 13 on the cleaning element does not exceed the traction force of the traction device 16 on the cleaning device. During the opening process of the door body 1, the cleaning unit 12 moves away from the initial position under the traction force of the traction device 16. During the closing process of the door body 1, the cleaning unit 12 is no longer under the traction force, and the cleaning unit 12 is reset to the initial position under the action of the elastic element 13.

[0071] Further, a pulley set is provided on the door body 1, which is arranged on the path where the traction device 16 connects the cleaning unit 12 and the filtering unit 11. While planning the route of the traction device 16, the friction force of the traction device 16 on the door body 1 is reduced, the efficiency of the traction device 16 pulling the cleaning unit 12 to move on the surface of the filtering unit 11 during the opening process of the door body 1 is improved, and the cleaning efficiency of the lint on the surface of the filtering unit 11 is improved.

[0072] Further, an opening for the traction rope to pass through is opened on the frame 14 close to the rotating shaft 121 of the door body 1, so that the path of the traction device 16 when pulling the surface of the cleaning unit 12 is the shortest, and the friction force of the traction device 16 during the traction process is reduced.

[0073] Further, as an implementation manner of this embodiment, one end of the traction device 16 independent of the door body 1 is arranged on the rotating shaft 121 of the door body 1. During the opening and closing process of the door body 1, the end of the traction device 16 arranged on the rotating shaft 121 of the door body 1 does not rotate with the door body 1. The larger the opening angle of the door body 1, the greater the moving amplitude of the cleaning unit 12 on the surface of the filtering unit 11, realizing the cleaning of the residual lint on the surface of the filtering unit 11.

[0074] As another implementation manner of this embodiment, one end of the traction device 16 independent of the door body 1 is fixed outside the door body 1. During the opening process of the door body 1, the user manually pulls the traction device 16 to realize the cleaning of the residual lint on the surface of the filtering unit 11.

[0075] Further, a collecting device 15 is arranged on the filtering unit 11. A part of the lint falls into the collecting device 15 after being blocked by the filtering unit 11. The lint remaining on the surface of the filtering unit 11 is scraped off into the collecting device 15 by the cleaning unit 12 every time the door body 1 opens and closes, realizing the collection of the lint.

[0076] Further, the filter screen is arranged in multiple layers inside the door body 1 through the frame 14 to achieve a better filtering effect on lint, and the collection device 15 covers the lower ends of the multiple layers of filter screens to ensure the collection of the lint filtered by each layer of filter screen. A cleaning unit 12 is provided for each layer of filter screen, and multiple cleaning units 12 share a rotating shaft 121 to improve the cleaning effect of the residual lint on the filter screen.

[0077] Embodiment 2

[0078] As Figures 4 to 6 shown, as an embodiment of the present invention, the difference between this embodiment and the above solution is that in this embodiment, the transmission device 17 converts the rotation direction of the rotating shaft of the door body 1 into the rotation direction of the cleaning unit 12 on the surface of the filtering unit 11.

[0079] The present invention provides a lint separation device for a dryer. The dryer includes a door body 1, and a filtering assembly is arranged inside the door body 1. The filtering assembly includes a filtering unit 11. The filtering unit 11 is fixed inside the door body 1, and a gap 10 communicating with the circulation air duct is formed between the filtering unit 11 and the inside of the door body 1. A rotatable cleaning unit 12 is arranged on the surface of the filtering unit 11; a transmission device 17, one end of the transmission device 17 is connected to the rotating shaft 121, and the other end rotates coaxially with the door body 1. The transmission device 17 is used to convert the rotation direction of the door body 1 into the rotation direction of the cleaning unit 12 on the surface of the filtering unit 11. During the opening and closing of the door body 1, the transmission device 17 transmits the power of the rotation of the door body 1 to the rotation of the cleaning unit 12 on the surface of the filtering unit 11 to clean the residual lint on the surface of the filtering unit 11.

[0080] Further, the filtering unit 11 includes a filter screen and a frame 14. The frame 14 has a certain thickness. The filtering unit 11 is fixed to the door body 1 through the frame 14. After the filtering unit 11 is installed on the door body 1 through the frame 14, the frame of the filtering unit 11 is divided into an inner part and an outer part. The frame 14 on the side close to the door body 1 is used to install the filtering unit 11, and a gap 10 communicating with the air inlet of the circulation air duct is formed between the frame 14 and the inner side of the door body 1. The frame 14 near the upper end and / or the lower end of the door body 1 is used to define the initial position or the end position of the cleaning unit 12 moving on the filtering unit 11. The gap 10 may be formed by directly pasting the frame 14 on the door body 1 at the pasting position of the filtering unit 11 and the frame 14 on the door body 1. Those skilled in the art should understand that on the side of the filtering unit 11 close to the door body 1, the frame 14 is provided with an opening communicating with the air inlet of the circulation air duct. The opening is formed by the frame 14 being recessed or a part / all of the end near the air inlet not being provided with the frame 14, and is used for the gap 10 to communicate with the air inlet. Correspondingly, on the side of the filtering unit 11 away from the door body 1, the lower end of the filtering unit 11 is not provided with the frame 14, and a collecting device 15 is provided. The lint on the filtering unit 11 is scraped off by the cleaning unit 12 and falls into the collecting unit 16.

[0081] Further, as Figure 5 shown in Figure 6 As an implementation manner of this embodiment, when the cleaning unit 12 cleans the filtering unit 11, it works within the range defined by the frame 14 and moves up and down relative to the door body on the surface of the filtering unit 11 to realize the cleaning of the lint on the surface of the filtering unit 11. The two frames 14 of the cleaning unit 12 in the moving direction on the filtering unit 11 respectively define the initial position and the end position of the cleaning unit 12. When the cleaning unit 12 is in the initial position, at least part of it abuts against the frame 14 above the door body. When the door body 1 is opened to the end position, at least part of the cleaning unit 12 abuts against the frame 14 in the direction opposite to the initial position, so that the cleaning path of the cleaning unit 12 covers the entire filtering unit 11 during the cleaning process of the filtering unit 11, ensuring the cleaning effect of the cleaning unit 12 on the filtering unit 11.

[0082] Further, the transmission device 17 is a gear set. The gear set includes a driving gear, a transmission gear 171 and a driven gear 172 which are meshed with each other. The driving gear is coaxially arranged with the door body 1. The driven gear 172 is installed on the rotating shaft 121 and drives the cleaning unit 12 to rotate coaxially on the filtering unit 11 through the rotating shaft 121. During the opening and closing process of the door body 1, the rotating shaft of the door body 1 rotates. The driving gear converts the movement in the rotation direction of the door body 1 into the rotation of the driven gear 172 driving the cleaning unit 12 on the filtering unit 11 through the transmission gear 171, so as to realize the cleaning of the residual lint on the surface of the filtering unit 11.

[0083] Further, the transmission gear 171 is provided with a first transmission gear and a second transmission gear respectively meshing with the driving gear and the driven gear 172; the first transmission gear and the second transmission gear are connected by a transmission rod 1712, and the first transmission gear and the second transmission gear achieve coaxial rotation through the transmission rod 1712. The transmission rod 1712 can also adjust the distance between the first transmission gear and the second transmission gear, thereby adjusting the position of the rotating shaft 121 relative to the filtering unit 11, so that the rotation path of the cleaning unit 12 on the filtering unit 11 covers all positions of the filtering unit 11, improving the cleaning effect of the cleaning unit 12 on the residual lint on the surface of the filtering unit 11, ensuring that the filtering unit 11 can be comprehensively cleaned during each opening and closing process of the dryer door, and further preventing the surface of the filtering unit 11 from being affected by excessive lint accumulation and reducing the drying efficiency of the dryer.

[0084] Further, the transmission gear 171 is preferably a bevel gear, which is more likely to convert the power direction from the rotating shaft of the door body 1 to the rotating shaft 121.

[0085] Further, a transmission 174 is provided on the first transmission gear or the second transmission gear, and the first transmission gear and / or the second transmission gear are meshed with the driving gear and / or the driven gear 172 through the transmission 174; that is to say, the transmission 174 can be provided at one end of the first transmission gear or the second transmission gear. The transmission 174 adjusts the ratio of the opening and closing angle of the door body 1 to the rotation angle of the cleaning unit 12 by adjusting the gear pitch, ensuring that the cleaning unit 12 can comprehensively clean the lint on the surface of the filtering unit 11 during the opening and closing process of the door body 1.

[0086] Specifically, as Figure 7 shown, the transmission 174 is meshed with the second transmission gear. Since the first transmission gear is provided on one side of the door body rotating shaft and is not shown in the figure, only a schematic diagram showing the second transmission gear meshing with the transmission 174 and the driven gear 172 is shown. The transmission 174 is provided on a shaft fixed to the door body and rotates relative to the door body 1. At this time, the transmission 174 is not only used to adjust the rotation angle of the door body 1 and the rotation angle of the cleaning unit 12 on the filtering unit 11, but also used to convert the rotation direction between the second transmission gear and the driven gear 172; to further improve the conversion stability, the transmission includes a first rotating part and a second rotating part respectively meshed with the second transmission gear. The second rotating part and the second rotating part are coaxially arranged, and at the same time support and drive the second transmission gear, improving the conversion efficiency of the rotation direction and momentum of the door body 1.

[0087] Further, as an implementation manner of this embodiment, the transmission 174 includes a speed-changing gear. The distance between the gears of the speed-changing gear is different from the distance between the gears of the first transmission gear and the second transmission gear; the setting direction of the speed-changing gear is different from the setting direction of the first transmission gear or the second transmission gear. The speed-changing gear can be arranged at one end of the first transmission gear. The driving gear adjusts the rotation angle of the door body 1 to the rotation angle of the cleaning unit 12 on the filtering unit 11 through the transmission 174, and transfers the momentum to the driven gear 172 through the first transmission gear and the second transmission gear, thereby driving the cleaning unit 12 to rotate on the filtering unit 11 at a set angle to clean the lint on the surface of the filtering unit 11; the speed-changing gear can be arranged at one end of the second transmission gear. The momentum generated by the rotation of the door body 1 is transmitted to the first transmission gear through the driving gear, and then transmitted from the first transmission gear to the second transmission gear. After the angular velocity is adjusted by the transmission 174, the driven gear 172 drives the cleaning unit 12 to process the lint on the surface of the filtering unit 11; in this embodiment, the speed-changing gear is arranged at one end of the second transmission gear, and the driven gear 172 is meshed with the speed-changing gear, and the angular momentum transfer distance is small, which improves the stability of kinetic energy transfer.

[0088] Further, as a specific implementation manner of this embodiment, the rotating shaft 121 is arranged at the central position of the door body 1 and is at the central position of the filtering unit 11. The distance from the rotating shaft 121 of the door body 1 to the rotating shaft 121 is adapted to the radius of the door body 1. During the opening process of the door body 1, through the driving gear, the first transmission gear, the second transmission gear, the speed-changing gear and the driven gear 172 which are meshed with each other, the angular momentum in the opening direction of the door body 1 is converted into the angular momentum of the cleaning unit 12 rotating on the filtering unit 11. And during the process of the door body 1 closing to opening to the maximum angle, the cleaning unit 12 rotates at least one week on the filtering unit 11 to ensure that the residual lint on the filtering unit 11 is completely scraped off into the collecting device 15 at the lower end of the filtering source; during the process of the door body 1 opening from the maximum angle, the cleaning unit 12 rotates on the filtering unit 11 in the opposite direction to prevent more lint from remaining on the surface of the filtering unit 11 after the first cleaning, and improve the cleaning effect of the cleaning unit 12 on the residual lint on the filtering unit 11.

[0089] As another implementation manner of this embodiment, as Figure 7 shown, the rotating shaft 121 is installed on one side of the door body 1 close to the rotating shaft. And during the process of the door body 1 closing to opening to the maximum angle, the area formed by the rotation path of the cleaning unit 12 around the rotating shaft 121 on the filtering unit 11 is adapted to the area of the filtering unit 11. When the rotating shaft 121 is arranged close to one side of the rotating shaft 121 of the door body 1, the transmission path of the transmission gear 171 is shorter, which can better ensure the stability of the cleaning unit 12 rotating on the surface of the filtering unit 11.

[0090] Furthermore, as Figures 3 to 6 shown, the filtering unit 11 includes a filter screen and a frame 14. The filter screen is disposed in the middle along the edge of the frame 14. The filter screen is fixed to the door body 1 through the frame 14. When the cleaning unit 12 cleans the filtering unit 11, it works within the range defined by the frame 14, and an opening communicating with the circulating air duct is provided on the frame 14 on the side close to the door body 1. The filtered air flow enters the circulating air duct through the opening; and an opening is provided at the lower end of the frame 14 on the side away from the door body 1, and the lint filtered by the filtering unit 11 falls into the collecting device 15 provided at the lower end of the filtering unit 11 through the opening; when the rotating shaft 121 is disposed in the middle of the filtering unit 11, the shape of the frame 14 and the filter screen disposed on the frame 14 is circular, and the rotating shaft 121 is disposed at the center of the circle; when the rotating shaft 121 is disposed on the side close to the rotating shaft 121 of the door body 1, the frame 14 and the filter screen disposed on the frame 14 are fan-shaped, and the rotating shaft 121 is disposed at the vertex of the fan shape; no matter what setting method the filtering unit 11 adopts, it is sufficient to cover the filtering air duct, and the length of the cleaning unit 12 is adapted to the radius of the circle or the side length of the fan shape, so as to ensure that the cleaning path of the cleaning unit 12 covers the entire filtering unit 11 during the cleaning process of the filtering unit 11, and ensure the cleaning effect of the cleaning unit 12 on the filtering unit 11.

[0091] Furthermore, an elastic element 13 is disposed on the rotating shaft 121. One end of the elastic element is relatively fixed to the door body 1, and the other end abuts against the cleaning unit 12, and tightens or relaxes with the movement of the cleaning unit 12; during the opening and / or closing process of the door body 1, the acting force of the elastic element 13 on the cleaning unit 12 becomes larger and / or smaller; when the door body 1 is closed, the cleaning unit 12 is located at one end of the door frame; by disposing the elastic element 13 at the rotating shaft 121, during the opening and closing process of the door body 1, the acting force of the elastic element 13 on the cleaning unit 12 first becomes larger and then smaller, and the filtering unit 11 is always subjected to the acting force of the elastic element 13, reducing the jerks during the movement process and improving the stability of the cleaning unit 12 rotating on the surface of the filtering unit 11. The elastic element 13 is preferably a torsion spring; in addition, during the opening process of the door body, after the cleaning unit 12 reaches the end position, the rotational force of the door body 1 is transferred to the torsion spring so that the torsion spring continues to be compressed, preventing the cleaning unit 12 from being damaged.

[0092] Furthermore, a collecting device 15 is provided for the filtering unit 11. Part of the lint is blocked by the filtering unit 11 and falls into the collecting device 15. The lint remaining on the surface of the filtering unit 11 is scraped off into the collecting device 15 by the cleaning unit 12 every time the door body 1 opens and closes, realizing the collection of the lint.

[0093] Further, multiple layers of the filter screen are provided on the frame 14 to achieve a better filtering effect on lint, and the collecting device 15 covers the lower ends of the multiple layers of filter screens to ensure the collection of the lint filtered by each layer of filter screen. A cleaning unit 12 is provided for each layer of filter screen, and multiple cleaning units 12 share a rotating shaft 121 to improve the cleaning effect of the residual lint on the filter screen.

[0094] The above are only the preferred embodiments of the present invention, and there is no any form of limitation to the present invention. 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 may make some changes or modifications to the above-mentioned technical content to be equivalent embodiments within the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution 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 filtering component is provided inside the door body (1). The filtering component includes: A filtering unit (11), which is fixed inside the door body (1) and forms a gap (10) communicating with the circulating air duct between it and the inner side of the door body (1); A cleaning unit (12), which is movably arranged on the surface of the filtering unit (11) for cleaning the filtering unit (11); A traction device (16), one end of which is connected to the cleaning unit (12) and the other end is independently arranged on the dryer outside the door body (1); During the opening process of the door body (1), the traction device pulls the cleaning unit (12) to move on the surface of the filtering unit (11).

2. The lint separation device of a dryer according to claim 1, characterized in that: An elastic element (13), one end of which is relatively fixed to the door body (1) and the other end is connected to the cleaning unit (12). The elastic element (13) has an initial acting force on the cleaning unit (12), and the initial acting force is an elastic force or a tensile force; When the door body (1) is in a closed state, the cleaning unit (12) is in an initial position under the action of the initial acting force.

3. The lint separation device of a dryer according to claim 2, characterized in that: The filtering unit (11) includes a filter net and a frame. The filter net is arranged in the middle along the edge of the frame. The filter net is fixed to the door body (1) through the frame, and an opening communicating with the circulating air duct is provided on the frame on the side close to the door body (1); When the cleaning unit (12) is in the initial position, at least part of it abuts against the frame on the side far from the door body (1).

4. The lint separation device of a dryer according to claim 3, characterized in that: The cleaning unit (12) includes a rotating shaft (121). The frame is a fan-shaped or trapezoidal area. The rotating shaft (121) is arranged at the vertex of the fan shape or the upper end of the upper edge of the trapezoid. The cleaning unit (12) rotates within the range defined by the frame (14). The frames (14) at both ends of the rotation direction of the cleaning unit (12) respectively define the initial position and the end position of the rotation of the cleaning unit (12).

5. The lint separation device of a dryer according to claim 4, characterized in that: The elastic element (13) is a torsion spring with elastic force. The torsion spring with elastic force is arranged at the rotating shaft (121) of the cleaning unit (12) and has an initial elastic force to make the cleaning unit (12) in the initial position.

6. The lint separation device of a dryer according to claim 4, characterized in that: The elastic element (13) is a tension spring or a tension elastic band. The tension spring or the tension elastic band is arranged in the middle or at the end outside the rotating shaft (121) and has an initial elastic force or a tensile force to make the cleaning unit (12) in the initial position.

7. The lint separation device of a dryer according to claim 5 or 6, characterized in that: When one end of the elastic element (13) is fixed on the side of the rotating shaft (121) close to the door body (1), the initial acting force of the elastic element (13) on the cleaning unit (12) is an elastic force; When one end of the elastic element (13) is fixed on the side of the door body (1) away from the rotation axis (121) of the door body (1), the initial acting force of the elastic element (13) on the cleaning unit (12) is a tensile force.

8. A lint separation device for a dryer according to any one of claims 1-7, characterized in that the traction device pulls the cleaning unit (12) through a pulley set provided on the door body (1); both ends of the traction device are respectively fixed on the cleaning unit (12) and the rotation axis (121) of the door body (1); an opening for the traction rope to pass through is formed in the frame near the rotation axis (121) of the door body (1).

9. A lint separation device for a dryer according to claim 8, characterized in that a plurality of filter units (11) arranged at intervals are provided inside the frame, and a cleaning unit (12) is provided on each filter unit (11), and a collection device (15) covering the plurality of filter units (11) is provided at the lower end of the filter unit (11).

10. A dryer, characterized in that, including a lint separation device for a dryer according to any one of claims 1-9.

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