Filter assembly and roller washing and drying machine

Abstract

The invention relates to a filtering assembly and a roller washing and drying machine in the technical field of fabric processing equipment, the filtering assembly comprises a filtering piece, the filtering piece comprises a filtering box body and a filtering net, one side of the filtering box body is provided with an open installation opening, the filtering net is installed on the installation opening in an openable and closable mode, and the side, opposite to the installation opening, of the filtering box body is provided with a first air inlet part; the drum washing and drying machine comprises an inner drum, vent holes are formed in the bottom wall of the inner drum, and the filter part is detachably installed on the bottom wall of the inner drum and correspondingly covers the forming area of the vent holes. The filtering assembly is installed in the roller washing and drying machine and is mainly used for filtering and collecting soft flocks generated during drying, drying air enters the inner barrel, firstly passes through the filtering box body and flows to the filtering net through the first air inlet part of the filtering box body, and impurities such as the soft flocks in the drying air are intercepted on the windward side of the filtering net, so that the impurities are collected in the containing cavity; therefore, bacteria breeding caused by accumulation of soft flocks in the drying tunnel is prevented, and the health effect of washing clothes by a user is improved.

Description

Technical Field

[0001] This invention relates to the field of fabric processing equipment technology, and more particularly to a filter assembly and a drum washer-dryer. Background Technology

[0002] In the field of fabric processing equipment, such as washer-dryers, a large amount of lint is generated during the drying process. Lint is easily stuck in the centrifugal fan blades and drying ducts during drying, eventually adhering to the fan blades and ducts, causing a decrease in the efficiency of the centrifugal fan blades, and a large amount of lint can easily breed odors, affecting the health of users when washing and wearing clothes. Summary of the Invention

[0003] The technical problem to be solved by the present invention is that a large amount of lint is generated during the drying process in the prior art. The lint is easily stuck in the centrifugal fan blades and drying ducts during the drying process, and eventually adheres to the fan blades and ducts, causing a decrease in the efficiency of the centrifugal fan blades. In addition, a large amount of lint can easily generate odors, affecting the health of users when washing and wearing clothes. The present invention provides a filter component and a drum washer-dryer.

[0004] This invention aims to provide a filter assembly for a drum washer-dryer, comprising: A filter element includes a filter housing and a filter screen. The filter housing has an open mounting port on one side, and the filter screen can be opened and closed and mounted on the mounting port. A first air inlet is provided on the side of the filter housing opposite to the mounting port. The drum washer-dryer includes an inner drum with ventilation holes on the bottom wall of the inner drum. The filter element is detachably installed on the inner wall of the bottom of the inner drum and covers the area where the ventilation holes are located.

[0005] In some embodiments, the filtering component includes: A fixing frame is installed on the bottom wall of the inner cylinder and covers the opening area of ​​the ventilation hole. The filter box is detachably connected to the fixing frame. The fixing frame has a second air inlet. The filter screen is located between the first air inlet and the second air inlet.

[0006] In some embodiments, one end of the filter housing is formed with an insertion end, and one end of the fixing frame is provided with a slot that mates with the insertion end. The insertion end is inserted into the slot so that the filter housing presses one end of the filter screen against one end of the fixing frame. And / or, the other end of the filter housing has an extended end, and a relief groove is formed on the extended end. The other end of the fixing frame is provided with a first column that is adapted to the relief groove. A first column cavity is formed in the first column cavity. A limiting member is detachably provided in the first column cavity. The limiting member limits the extended end at the relief groove at the other end of the fixing frame to achieve a detachable connection between the filter housing and the fixing frame.

[0007] In some embodiments, the limiting member includes a stud and a first limiting block disposed on the peripheral sidewall of the stud, the inner sidewall of the first column cavity is provided with an internal thread adapted to the stud, the stud is screwed into the first column cavity, and the first limiting block abuts against the protruding end.

[0008] In some embodiments, a plurality of partition slits are formed on the peripheral sidewall of the stud, and a lever is formed between adjacent partition slits. A first limiting block is disposed at one end of the lever, and a second limiting block is disposed at the other end of the lever. The second limiting block abuts against one end of the first stud near the bottom wall of the inner cylinder.

[0009] In some embodiments, an elastic element is provided between the protruding end and the fixing frame. The elastic element is compressed and deformed when the limiting member limits the protruding end, and recovers its deformation when the filter box is removed from the fixing frame, thus pushing out the protruding end.

[0010] In some embodiments, a second column is provided on the filter housing, a second column cavity is formed in the second column, and the elastic member is disposed in the second column cavity; One end of the elastic element is fixedly connected to the filter box body, and the other end abuts against the fixing frame, or the elastic element is fixedly connected to the fixing frame, and the other end abuts against the filter box body.

[0011] In some embodiments, one end of the filter housing is formed with an insertion end, and one end of the fixing frame is provided with a slot that mates with the insertion end. The insertion end is inserted into the slot so that the filter housing presses one end of the filter screen against one end of the fixing frame. The other end of the filter box is engaged with the other end of the fixing frame.

[0012] In some embodiments, the first air inlet is an air inlet wall with multiple through holes, the diameter of the through holes being larger than the diameter of the mesh holes on the filter screen, and the through holes being polygonal through holes; Multiple protrusions are formed on the side of the air inlet wall away from the filter screen.

[0013] In some embodiments, one end of the filter housing is rotatably connected to one end of the filter screen, and the other end of the filter housing abuts against the other end of the filter screen; One end of the filter box is provided with a first connection hole, and one end of the filter screen is provided with a connecting post corresponding to the first connection hole. The connecting post is rotatably connected to the corresponding first connection hole.

[0014] In some embodiments, a drum washer-dryer is provided, comprising: The aforementioned filter components; The inner cylinder has ventilation holes on its bottom wall, and the filter assembly is detachably installed on the bottom wall of the inner cylinder, correspondingly covering the area where the ventilation holes are located.

[0015] The solution provided by this invention has the following advantages compared with the prior art: The filter assembly is installed in the drum washer-dryer and is mainly used to filter and collect lint generated during drying. The drying air enters the inner drum, first passes through the filter box, and flows to the filter screen through the first air inlet of the filter box. Lint and other impurities in the drying air are intercepted on the windward side of the filter screen and thus collected in the cavity, thereby preventing the accumulation of lint in the drying tunnel from causing bacterial growth and improving the health of users' laundry. Attached Figure Description

[0016] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings: Figure 1 This is an exploded view of the filter assembly shown in an embodiment of the present invention; Figure 2 This is one of the schematic diagrams of the limiting member structure shown in the embodiments of the present invention; Figure 3 This is one of the schematic diagrams of the filter component structure shown in the embodiments of the present invention; Figure 4 This is a partial cross-sectional view of the filtering component shown in an embodiment of the present invention; Figure 5 This is a schematic diagram of the filter structure shown in an embodiment of the present invention; Figure 6 This is a second partial cross-sectional view of the filter component shown in an embodiment of the present invention; Figure 7 This is a second schematic diagram of the filter component structure shown in an embodiment of the present invention. Figure 8 This is a schematic diagram of the inner cylinder shown in an embodiment of the present invention; Figure 9 This is a perspective view of the inner cylinder shown in an embodiment of the present invention.

[0017] In the diagram: 1-Filter element, 101-Filter screen, 1011-Connecting column, 102-Filter box body, 1021-Insert end, 1022-Extended end, 1024-Protrusion, 1025-First connecting hole, 103-Through hole, 2-Fixing bracket, 201-Slot, 202-First column, 2021-First column cavity, 203-Second column, 2031-Second column cavity, 204-Second connecting hole, 3-Limiting element, 301-Stud, 3011-Separation seam, 3012-Pulley, 3013-Second limiting block, 302-First limiting block, 4-Elastic element, 5-Inner cylinder, 501-Ventilation hole, 6-Expansion plate.

[0018] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0019] In the description of this invention, it should be noted that the terms "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "contact," and "communication" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] Washer dryers produce a lot of lint during the drying process. Lint can easily get stuck in the centrifugal fan blades and drying ducts, eventually adhering to the fan blades and ducts. This causes a decrease in the efficiency of the centrifugal fan blades, and a large amount of lint can easily breed odors, affecting the health of users when washing and wearing clothes.

[0022] Based on this, the following embodiments are proposed.

[0023] Example 1: like Figure 1 , 3 As shown, this embodiment provides a filter assembly for a drum washer-dryer, comprising: The filter element 1 includes a filter housing 102 and a filter screen 101. The filter housing 102 has an open mounting port on one side, and the filter screen 101 is closable and mounted on the mounting port. A first air inlet is provided on the side of the filter housing 102 opposite to the mounting port. The drum washer-dryer includes an inner drum 5, with ventilation holes 501 opened on the bottom wall of the inner drum 5. The filter element 1 is detachably installed on the inner wall of the bottom of the inner drum 5 and covers the area where the ventilation holes 501 are opened.

[0024] The filter assembly proposed in this embodiment is installed in a drum washer-dryer and is mainly used to filter and collect lint generated during drying, thereby reducing lint accumulation in the air duct and centrifugal fan, and avoiding decreased drying efficiency and bacterial and odor generation due to prolonged clogging. The filter assembly includes a filter screen 101 and a filter box 102, which form a cavity for collecting lint and other impurities. When the drum washer-dryer runs the drying program, the fan rotates to provide power for airflow in the washing drum. The airflow sequence in the washing drum is: inner drum 5—rear air duct—fan—electric heater—inner drum 5, completing one cycle. When the air flows through the electric heater, it is heated into humid hot air. When it passes through the rear air duct, it is condensed by the condensate flowing downward from above the rear air duct, releasing the moisture it carries, thus achieving dehumidification. At this time, the humid, high-temperature air becomes dry, low-temperature air, which is then heated to a high temperature by the electric heater to participate in the next cycle, thereby drying the fabric in the inner drum 5 and achieving the drying purpose. The filter assembly proposed in this embodiment filters and collects lint generated by the fabric during drying based on the drying principle. The drying air enters the inner cylinder 5, first passes through the filter box 102, and flows to the filter screen 101 through the first air inlet of the filter box 102. Lint and other impurities in the drying air are intercepted on the windward side of the filter screen 101 and thus collected in the cavity, thereby preventing bacterial growth caused by lint accumulation in the drying tunnel and improving the health of the user's laundry. The filter can be completely removed from the inner cylinder 5 for convenient periodic cleaning. Specifically, by opening the filter box 102, the filter is fully open, and the lint and other impurities accumulated in the cavity can be manually cleaned. Then, the filter can be reinstalled back into the inner cylinder 5.

[0025] Preferably, the filter screen 101 has a mesh frame around its periphery, and the mesh frame has a connecting position. An expansion plate 6 is provided at the connecting position. The connection can be a screw hole, where screws are connected to the corresponding screw holes on the bottom wall of the inner cylinder 5, thereby fixing the filter screen 101 to the bottom wall of the inner cylinder 5. The expansion plate 6 is stretched and secured to the inner cylinder 5 by the screws, making the filter element more secure and preventing it from falling off. With this connection method, lint and other impurities collected in the cavity can also be automatically cleaned by the washing water during the washing cycle of the washer-dryer, allowing the lint to be discharged with the water flow without manual intervention.

[0026] Optionally, such as Figure 1 , 3 As shown, in one implementation of this embodiment, the filter assembly further includes: a fixing frame 2, which is installed on the bottom wall of the inner cylinder 5 and covers the opening area of ​​the ventilation hole 501. The filter box 102 is detachably connected to the fixing frame 2. The fixing frame 2 has a second air inlet, and the filter screen 101 is located between the first air inlet and the second air inlet.

[0027] In this embodiment, a fixed frame 2 is provided and fixedly connected to the bottom wall of the inner drum 5 of the drum washer-dryer instead of the filter element. The filter box 102 is detachably connected to the fixed frame 2, allowing the filter element to be removed from the fixed frame 2 for easier operation and cleaning. When the drum washer-dryer is running the drying program, the drying air enters the inner drum 5, first passes through the filter box 102, and flows to the filter screen 101 through the first air inlet of the filter box 102. Impurities such as lint in the drying air are intercepted on the windward side of the filter screen 101 and collected in the cavity, thus preventing bacterial growth caused by lint accumulation in the drying tunnel and improving the health of the user's laundry. The filtered drying air enters the ventilation hole 501 through the second air inlet and continues to circulate.

[0028] like Figure 6 As shown, preferably, one end of the filter housing 102 has an insertion end 1021, and one end of the fixing frame 2 has a slot 201 that mates with the insertion end 1021. The insertion end 1021 is inserted into the slot 201, so that the filter housing 102 presses one end of the filter screen 101 against one end of the fixing frame 2; the other end of the filter housing 102 is engaged with the other end of the fixing frame 2. When the user needs to disassemble the filter element, they only need to pry the end of the filter housing 102 that is engaged with the fixing frame 2 to separate the filter housing 102 from the fixing frame 2, and then pull the insertion end 1021 out of the slot 201 to remove the entire filter element. The filter housing 102 has few connecting parts, making disassembly simpler. After the entire filter element is removed from the inner cylinder 5, the filter housing 102 is opened to allow the filter element to be in an open state. The accumulated lint and other impurities in the cavity are manually cleaned, and then the filter element is reinstalled back into the fixing frame 2.

[0029] Optionally, such as Figure 1-4As shown in Figure 7, in one implementation of this embodiment, one end of the filter box 102 is formed with an insertion end 1021, and one end of the fixing frame 2 is provided with a slot 201 that cooperates with the insertion end 1021. The insertion end 1021 is inserted into the slot 201 so that the filter box 102 presses one end of the filter screen 101 against one end of the fixing frame 2. And / or, the other end of the filter box 102 is formed with an extension end 1022, and a relief groove 1023 is formed on the extension end 1022. The other end of the fixing frame 2 is provided with a first column 202 adapted to the relief groove 1023. A first column cavity 2021 is formed in the first column 202. A limiting member 3 is detachably provided in the first column cavity 2021. The extension end 1022 is limited at the relief groove 1023 by the limiting member 3 to the other end of the fixing frame 2 to realize the detachable connection between the filter box 102 and the fixing frame 2.

[0030] In this embodiment, the protruding end 1022 is limited to the end of the fixed frame 2 by the setting of the limiting member 3. Under normal conditions, one end of the filter element and one end of the fixed frame 2 are fixed by the insertion end 1021 and the slot 201. The other end of the filter element and the other end of the fixed frame 2 are fixed by the cooperation between the first column cavity 2021 in the first column 202 and the limiting member 3.

[0031] Preferably, the limiting member 3 includes a stud 301 and a first limiting block 302 disposed on the peripheral sidewall of the stud 301. The inner sidewall of the first column cavity 2021 is provided with an internal thread adapted to the stud 301. The stud 301 is screwed into the first column cavity 2021, and the first limiting block 302 abuts against the protruding end 1022.

[0032] In this embodiment, the structural design of the limiting member 3 further enhances the convenience of disassembling and installing the filter element and the fixing frame 2. By turning the stud 301, the first limiting block 302 moves away from the protruding end 1022, and the protruding end 1022 loses the limiting effect of the limiting member 3. At this time, the filter element can be completely removed from the fixing frame 2. After cleaning the filter element, it can be reinstalled into the fixing frame 2. After alignment, simply turning the stud 301 drives the first limiting block 302 to rotate to abut against the protruding end 1022, thereby limiting the protruding end 1022 and fixing the filter element. This connection method between the filter element and the fixing frame 2 has the following advantages compared to snap-fit: 1. Enhanced connection stability and improved vibration resistance, better suited to washer-dryer operating conditions. When the drum washer-dryer is working, especially during the dehydration and drying stages, the inner drum 5 will rotate at high speed and generate continuous vibration. The direct snap-fit ​​connection method relies on the deformation of the elastic buckle to snap into the slot. Long-term vibration can easily lead to buckle fatigue, elasticity decay, or even loosening and displacement, which may cause lint to leak out from the gaps and affect the filtration efficiency during the drying process.

[0033] The limiting component proposed in this embodiment achieves rigid limiting through threaded transmission. The threaded structure itself has self-locking properties and can resist the loosening tendency caused by vibration. Together with the limiting block, it abuts against the protruding end 1022. The fixing force is directly applied to the contact point without elasticity dependence. Even with long-term high-frequency vibration, the filter box 102 and the filter screen 101 can maintain their own positions to ensure that the lint interception effect does not fail.

[0034] Second, it has superior durability and is less prone to failure even after repeated disassembly and reassembly. Filter components need to be disassembled and cleaned regularly. Repeated disassembly and assembly will cause pressure and wear on the clips each time they are disassembled and assembled. Long-term use may lead to plastic deformation or increased gaps in the fit, resulting in a short lifespan.

[0035] The limiting component proposed in this embodiment has wear concentrated on the threaded contact surface, and the contact area of ​​the thread is much larger than that of the snap fastener, resulting in more uniform and slower wear. Even with long-term repeated twisting, its lifespan can cover the entire cycle of the washer-dryer, eliminating the need for frequent replacement of connecting parts and reducing maintenance costs.

[0036] Third, it is more user-friendly to disassemble and assemble, and has a higher tolerance for misalignment. The bottom wall space of the inner drum of the washer-dryer is narrow, and users often operate blindly or with one hand when disassembling and assembling the filter. The snap-fit ​​connection method requires the buckle and the slot to be precisely aligned. When installing, force is required to press or snap it in, and when disassembling, the buckle position must be found and pried open with force. Problems such as misalignment and inability to install, buckle jamming and inability to be pried open, and buckle breaking due to excessive force are likely to occur.

[0037] The limiting component proposed in this application embodiment has high alignment tolerance and does not require precise alignment. As long as the filter component is placed back in the approximate position of the fixing frame, the position of the first limiting block 302 can be adjusted by turning the stud 301 to finally achieve tight fixing. IV. Adjustable fixing force After prolonged use of a washer-dryer, the filter element may undergo slight deformation, such as shrinkage of the plastic due to high-temperature drying, leading to a decrease in its fixation and fit. If a snap-fit ​​connection is used, the clips may not be able to hold tightly or may not be able to be installed. However, the limiting component proposed in this application allows adjustment of the clamping force of the first limiting block 302 by turning the stud 301 a few more times. Even if the filter element is slightly deformed, the first limiting block 302 can be tightened against the protruding end by turning the stud 301 a few more times, or the stud can be loosened slightly to flexibly adapt to the deformed filter element.

[0038] Optionally, such as Figure 1 , 2 As shown, in one implementation of this embodiment, Multiple partition slits 3011 are formed on the peripheral sidewall of the stud 301, and a lever 3012 is formed between adjacent partition slits 3011. A first limiting block 302 is disposed at one end of the lever 3012, and a second limiting block 3013 is disposed at the other end of the lever 3012. The second limiting block 3013 abuts against the end of the column 202 near the bottom wall of the inner cylinder 5.

[0039] In this embodiment, for example, two sets of partition slits 3011 are formed on the peripheral sidewall of the stud 301, each set having two partition slits 3011. Each set of two partition slits 3011 forms a lever 3012, meaning the stud 301 has two levers 3012 on its peripheral sidewall. These levers 3012 can be moved under external force, with the moving direction towards the central axis of the stud 301. Both the first limiting block 302 and the second limiting block 3031 are two in number. During the process of screwing the stud 301 into the cylinder cavity 2021, the two levers 3012 are compressed, causing the second limiting block 3031 to move inward, avoiding interference with the threaded connection between the stud 301 and the cylinder cavity 2021. As the stud 301 extends into the cylinder cavity 2021, the second limiting block 3013 moves inward from its position. However, the screw 301 is firmly fixed in the column cavity 2021 by the end of the column 202 near the bottom wall of the inner cylinder 5, preventing it from falling off during the rotation of the inner cylinder 5. When the filter element 1 needs to be disassembled, hold the two first limiting blocks 302 by hand. The two first limiting blocks 302 act as a screw handle, further improving the convenience of the knob operation. By squeezing the two first limiting blocks 302, the two levers 3012 are pressed, thereby causing the second limiting block 3013 to disengage from the end of the column 202 near the bottom wall of the inner cylinder 5. Tightening the screw 301 to disengage from the column cavity 2021 causes the first limiting block 302 to leave the protruding end 1022. The protruding end 1022 loses the limiting effect of the limiting member 3. At this time, the filter element 1 can be completely removed from the fixing frame 2.

[0040] Optionally, such as Figure 1 As shown, in one implementation of this embodiment, An elastic element 4 is provided between the protruding end 1022 and the fixed frame 2. The elastic element 4 is compressed and deformed when the limiting member 3 limits the protruding end 1022. When the filter box 102 is removed from the fixed frame 2, it recovers its deformation and pushes out the protruding end 1022.

[0041] Preferably, a second column 203 is provided on the filter box 102, and a second column cavity 2031 is formed in the second column 203. The elastic member 4 is disposed in the second column cavity 2031. One end of the elastic member 4 is fixedly connected to the filter box 102, and the other end abuts against the fixing frame 2, or the elastic member 4 is fixedly connected to the fixing frame 2, and the other end abuts against the filter box 102.

[0042] In this embodiment, the elastic element 4 can be a spring. The setting of the elastic element 4 further improves the convenience of removing the filter element from the fixing frame 2. When it is necessary to remove the filter element from the fixing frame 2, the first limiting block 302 is moved away from the protruding end 1022 by turning the stud 301. The protruding end 1022 loses the limiting effect of the limiting element 3, the spring returns to its deformation, and pushes out the protruding end 1022. At this time, one end of the filter box 102 is raised. The user can pull the raised end to remove the filter element from the fixing frame 2 as a whole, thereby further improving the convenience of removing the filter element.

[0043] Optionally, such as Figure 3 As shown, in one implementation of this embodiment, The first air inlet is an air inlet wall 104 with multiple through holes 103. The diameter of the through holes 103 is larger than the diameter of the mesh holes of the filter screen 101. The through holes 103 are polygonal through holes. Multiple protrusions 1024 are formed on the side of the air inlet wall 104 away from the filter screen 101.

[0044] In this embodiment, the drying air enters the inner drum 5 and first passes through the filter box 102. It then flows through the air inlet wall 104 of the filter box 102, which has multiple through holes 103, to the filter screen 101. Impurities such as lint in the drying air are intercepted on the windward side of the filter screen 101 and collected in the cavity. This prevents bacteria from growing due to lint accumulation in the drying tunnel and improves the health of the user's laundry. The air inlet wall 104 has multiple protrusions 1024. During the drying process of the drum washer-dryer, the protrusions 1024 have a certain friction with the fabric as the inner drum 5 rotates. This friction can scrape off the lint from the fabric, and the scraped lint is directly collected into the cavity of the filter element, improving the lint removal effect of the filter element on the fabric.

[0045] When the drum washer-dryer is running in washing mode, the washing water flow impacts the outer wall of the filter box 102 as the inner drum 5 rotates. The washing water flow enters the filter element through the polygonal through holes 103 on the outer wall. In this embodiment, the polygonal through holes 103 are, for example, hexagonal through holes. These hexagonal through holes form a composite fluid channel. When the water flow comes into contact with the hexagonal through holes, the hexagonal through holes use the included angle between their six adjacent hole walls to guide the water flow, so that the washing water flow forms a spiral turbulence at the end face of the hexagonal through holes. The centrifugal force generated by the spiral turbulence can increase the tangential velocity of the water flow, thereby improving the circulation efficiency of the fabric treatment agent in the washing water flow by 15%-20%. At the same time, the spiral turbulence can also draw more washing water into the filter element to increase the filter element's throughput of washing water. After passing through the hexagonal through-hole, the washing water enters the gap between the outer wall of the filter box 102 and the filter screen. Then, the washing water continues to pass through the filter screen 101 and flows to the ventilation hole 501 located on the bottom wall of the inner drum 5. At this time, the filter screen 101 blocks and retains the lint carried in the washing water, preventing the lint from entering the ventilation hole 501 with the washing water and circulating back into the inner drum 5 to cause secondary pollution to the fabric. The trapped lint accumulates in the gap between the outer wall of the filter box 102 and the filter screen. Since all six walls of the hexagonal through holes are perpendicular to the horizontal plane at the bottom of the filter element, each hole wall forms a right angle with the outer wall of the filter box 102. Therefore, when the inner cylinder 5 rotates, the six walls of the hexagonal through holes rotate with the inner cylinder 5, and can drive the lint in the filter element to always move along the circumference of the inner cylinder 5 through each right angle structure. This greatly reduces the possibility of lint passing through the hexagonal through holes and returning to the inner cylinder 5 along the axial direction of the inner cylinder 5, thereby enhancing the interception effect of lint and other impurities and improving the cleaning efficiency of the fabric.

[0046] When the drum washer-dryer is running in drying mode, the drying airflow inside the drum washer-dryer continuously dries the fabric through its own constant changes. The high-temperature dry airflow of 60 to 80 degrees Celsius output from the drying duct comes into contact with the damp fabric in the inner drum 5, absorbing the moisture in the fabric to form a high-temperature, high-humidity airflow. After the high-temperature, high-humidity airflow enters the drying duct through the ventilation holes 501 on the inner drum 5, it first undergoes condensation, leaving the moisture near the condenser, and then forms a low-temperature dry airflow. The low-temperature dry airflow continues to flow through the heater in the drying duct, and then forms a high-temperature dry airflow again, thus re-entering the inner drum 5 to form a drying cycle. During the drying cycle, as the fabric gradually dries, lint adhering to the fabric surface flows with the drying airflow from the inner cylinder 5 through the filter element to the ventilation hole 501. After passing through the hexagonal through-hole, the lint is blocked by the filter screen 101 and trapped in the gap between the outer wall of the filter box 102 and the filter screen 101. Since the drying airflow path is unidirectional, the lint inside the filter element will not flow back into the inner cylinder 5 through the hexagonal through-hole, causing secondary contamination to the fabric. Furthermore, the drying airflow also forms a spiral turbulence at the end face of the hexagonal through-hole. By cooperating with the ventilation hole 501 on the bottom wall of the inner cylinder 5, the exhaust cross-sectional area of ​​the inner cylinder 5 can be increased by 30%, thereby drawing more drying airflow into the filter element and discharging more drying airflow out of the inner cylinder 5. This allows the filter element to filter more drying airflow per unit time and increases the humidity reduction rate in the inner cylinder 5 by 25%.

[0047] Optionally, such as Figure 1 As shown, in one implementation of this embodiment, One end of the filter box 102 is rotatably connected to one end of the filter screen 101, and the other end of the filter box 102 abuts against the other end of the filter screen 101. One end of the filter box 102 is provided with a first connection hole 1025, and one end of the filter screen 101 is provided with a connecting post 1011 corresponding to the first connection hole 1025. The connecting post 1011 is rotatably connected to the corresponding first connection hole 1025.

[0048] In this embodiment, when the filter needs to be cleaned, the filter screen can be completely removed from the inner cylinder 5. Rotate the filter box 102 at the openable end of the filter box 102 to open the filter box 102, so that the filter is in an open state. Manually clean the lint and other impurities accumulated in the cavity, then fasten the filter box 102 onto the filter screen 101, and then install the filter back into the inner cylinder 5. The operation is convenient.

[0049] Example 2 like Figure 8 , 9 As shown, this embodiment provides a drum washer-dryer, including: The filtering component in Example 1; The inner cylinder 5 has ventilation holes 501 on its bottom wall. The filter assembly is detachably installed on the bottom wall of the inner cylinder 5 and covers the area where the ventilation holes 501 are located.

[0050] The drum washer-dryer proposed in this embodiment has ventilation holes 501 on the bottom wall of its inner drum 5. When the drum washer-dryer runs the drying program, the fan rotates to provide power for airflow in the drum. The airflow sequence is: inner drum 5—rear air duct—fan—electric heater—inner drum 5, completing one cycle. When the air flows through the electric heater, it is heated into humid hot air. When it passes through the rear air duct, it is condensed by the condensate flowing downwards from above the rear air duct, releasing the moisture it carries, thus achieving dehumidification. At this time, the humid, high-temperature air becomes dry, low-temperature air, which is then heated to a high temperature by the electric heater to participate in the next cycle, thereby drying the fabric moisture in the inner drum 5 and achieving the drying purpose. The filter assembly is located at the ventilation hole 501 on the bottom wall of the inner cylinder 5. The filter is divided into two layers: a filter screen 101 and a filter box 102. The cavity formed by the filter screen 101 and the filter box 102 is used to collect impurities such as lint in the drying air. When the washer-dryer is running the drying program, the filter assembly effectively prevents lint from participating in the drying cycle and thus clogging the drying tunnel.

[0051] Preferably, in the drum washer-dryer, the area containing the ventilation holes 501 on the bottom wall of the inner drum 5 is divided into three fan-shaped areas, and three filter components are provided, each corresponding to one of the three fan-shaped areas containing the ventilation holes 501. This design allows the inner drum 5 to have a large area for drying air circulation, ensuring efficient flow of drying air, and the filter components can fully cover the ventilation holes, thus achieving all-round filtration of the drying air.

[0052] The mounting bracket 2 is fixed to the bottom wall of the inner cylinder 5 with screws. The filter element can be removed from the mounting bracket 2. The limiting member 3 is a knob structure made of plastic or stainless steel. The knob structure fixes the filter element to the mounting bracket 2 by rotating it into position. When the user needs to remove the filter element, simply rotate the knob, and the spring will lift one end of the filter element, allowing the user to remove and clean it. After removing the filter element from the mounting bracket 2, the user can open the filter box 102 to clean the filter screen 101. Similarly, when the user needs to install the filter element, simply place the filter element into the mounting bracket 2 and tighten the knob. The operation is convenient and reliable.

[0053] In this embodiment, the fixing frame 2 includes a frame and a first rib and a second rib connected to the inner side of the frame. The first rib and the second rib are arranged in different directions. The first rib and the second rib form a rib mesh on the inner side of the frame. The rib mesh forms a rib mesh groove structure in the frame. When the filter element is assembled on the fixing frame 2, the whole is located in the rib mesh groove structure. The positioning is convenient, and the overall strength of the filter component is higher, and the interception effect of impurities such as hair is better.

[0054] In summary, the ingenious design of the filter component lies in: First, the filter assembly is installed in the drum washer-dryer, mainly used to filter and collect lint generated during drying. The drying air enters the inner drum, first passes through the filter box, and then flows to the filter screen through the first air inlet of the filter box. Lint and other impurities in the drying air are intercepted on the windward side of the filter screen and thus collected in the cavity. This prevents bacteria growth caused by lint accumulation in the drying tunnel, improving the health of the clothes washed by the user. The filter can be completely removed from the inner drum, providing convenience for regular cleaning of the filter. Specifically, by opening the filter box, the filter is fully open, and the lint and other impurities accumulated in the cavity can be manually cleaned. Then, the filter can be reinstalled back into the inner drum. The operation is convenient.

[0055] Secondly, by setting up a fixed frame and fixing the fixed frame to the bottom wall of the inner drum of the drum washer-dryer instead of the filter element, and the filter box body being detachably connected to the fixed frame, the filter element can be removed from the fixed frame as a whole, making it easier to operate and thus making the cleaning of the filter element more convenient.

[0056] Third, the structural design of the limiting component further enhances the convenience of disassembling and installing the filter element and the mounting frame. By turning the stud, the limiting block is moved away from the protruding end, and the protruding end loses its limiting function. At this point, the filter element can be completely removed from the mounting frame. After cleaning the filter element, it can be reinstalled on the mounting frame. Once aligned, simply turning the stud rotates the limiting block to abut the protruding end, thus limiting the protruding end and fixing the filter element as a whole. Compared to snap-fit ​​connections, this connection method between the filter element and the mounting frame has the following advantages: stronger connection stability, better vibration resistance to adapt to washer-dryer conditions, superior durability, less prone to failure after repeated disassembly and assembly, more user-friendly disassembly and assembly, higher alignment tolerance, and adjustable fixing force.

[0057] Fourth, the air inlet wall has multiple protrusions. During the drying process of the drum washer-dryer, as the inner drum rotates, the protrusions have a certain friction with the fabric, which can scrape off the lint on the fabric. The scraped lint is directly collected into the cavity of the filter element, improving the lint removal effect of the filter element on the fabric.

[0058] It can be further understood that in this disclosure, "many" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0059] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0060] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0061] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0062] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A filter assembly for a drum washer-dryer, characterized in that, include: The filter element (1) includes a filter box (102) and a filter screen (101). The filter box (102) has an open mounting port on one side. The filter screen (101) is closable and mounted on the mounting port. A first air inlet is provided on the side of the filter box (102) opposite to the mounting port. The drum washer-dryer includes an inner drum (5), and a ventilation hole (501) is provided on the bottom wall of the inner drum (5). The filter element (1) is detachably installed on the inner wall of the bottom of the inner drum (5) and covers the area where the ventilation hole (501) is provided.

2. The filter assembly according to claim 1, characterized in that, include: A fixing frame (2) is installed on the bottom wall of the inner cylinder (5) and covers the opening area of ​​the ventilation hole (501). The filter box (102) is detachably connected to the fixing frame (2). The fixing frame (2) has a second air inlet. The filter screen (101) is located between the first air inlet and the second air inlet.

3. The filter assembly according to claim 2, characterized in that, One end of the filter box (102) is formed with an insertion end (1021), and one end of the fixing frame (2) is provided with a slot (201) that mates with the insertion end (1021). The insertion end (1021) is inserted into the slot (201) so that the filter box (102) presses one end of the filter screen (101) against one end of the fixing frame (2). And / or, the other end of the filter box (102) is formed with an extension end (1022), and a relief groove (1023) is formed on the extension end (1022). The other end of the fixing frame (2) is provided with a first column (202) that is adapted to the relief groove (1023). A first column cavity (2021) is formed in the first column (2022). A limiting member (3) is detachably provided in the first column cavity (2021). The extension end (1022) is limited at the relief groove (1023) by the limiting member (3) to the other end of the fixing frame (2) to realize the detachable connection between the filter box (102) and the fixing frame (2).

4. The filter assembly according to claim 3, characterized in that, The limiting member (3) includes a stud (301) and a first limiting block (302) disposed on the peripheral sidewall of the stud (301). The inner sidewall of the first column cavity (2021) is provided with an internal thread adapted to the stud (301). The stud (301) is screwed into the first column cavity (2021), and the first limiting block (302) abuts against the protruding end (1022).

5. The filter assembly according to claim 4, characterized in that, Multiple partition slits (3011) are formed on the peripheral sidewall of the stud (301), and a lever (3012) is formed between adjacent partition slits (3011). The first limiting block (302) is disposed at one end of the lever (3012), and a second limiting block (3013) is disposed at the other end of the lever (3012). The second limiting block (3013) abuts against the end of the first column (202) near the bottom wall of the inner cylinder (5).

6. The filter assembly according to claim 4, characterized in that, An elastic element (4) is provided between the protruding end (1022) and the fixed frame (2). The elastic element (4) is compressed and deformed when the limiting element (3) limits the protruding end (1022). When the filter box (102) is removed from the fixed frame (2), it recovers its deformation and pushes out the protruding end (1022).

7. The filter assembly according to claim 6, characterized in that, The filter box (102) is provided with a second column (203), and a second column cavity (2031) is formed in the second column (203). The elastic member (4) is disposed in the second column cavity (2031). One end of the elastic element (4) is fixedly connected to the filter box (102), and the other end abuts against the fixing frame (2), or the elastic element (4) is fixedly connected to the fixing frame (2), and the other end abuts against the filter box (102).

8. The filter assembly according to claim 2, characterized in that, One end of the filter box (102) is formed with an insertion end (1021), and one end of the fixing frame (2) is provided with a slot (201) that mates with the insertion end (1021). The insertion end (1021) is inserted into the slot (201) so that the filter box (102) presses one end of the filter screen (101) against one end of the fixing frame (2). The other end of the filter box (102) is engaged with the other end of the fixing frame (2).

9. The filter assembly according to claim 1, characterized in that, The first air inlet is an air inlet wall (104) with multiple through holes (103). The diameter of the through holes (103) is larger than the diameter of the mesh holes of the filter screen (101). The through holes (103) are polygonal through holes. Multiple protrusions (1024) are formed on the side of the air inlet wall (104) away from the filter (101).

10. The filter assembly according to claim 2, characterized in that, One end of the filter box (102) is rotatably connected to one end of the filter screen (101), and the other end of the filter box (102) abuts against the other end of the filter screen (101). One end of the filter box (102) is provided with a first connection hole (1025), and one end of the filter screen (101) is provided with a connecting post (1011) corresponding to the first connection hole (1025). The connecting post (1011) is rotatably connected to the corresponding first connection hole (1025).

11. A drum washer-dryer, characterized in that, include: The filtering component as described in any one of claims 1-10; The inner cylinder (5) has ventilation holes (501) on its bottom wall. The filter assembly is detachably installed on the bottom wall of the inner cylinder (5) and covers the area where the ventilation holes (501) are opened.

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