Filtering device and cleaning apparatus

Abstract

A filtering device and a cleaning apparatus. The filtering device comprises a filter element (2) and a frame (1). The filter element (2) comprises a filter element main body part (21) capable of implementing a filtering function, and a filter element connecting part (22) arranged around the peripheral side of the filter element main body part (21) and connected to the filter element main body part (21). The frame (1) comprises a cavity capable of accommodating the filter element main body part (21) and a frame connecting part capable of supporting the filter element connecting part (22); a fitting clearance (100) is reserved between the filter element connecting part (22) and the frame connecting part in the direction of airflow pressure applied to the filter element main body part (21), so as to provide a space required for elastic deformation of the filter element connecting part (22) in the direction of the airflow pressure. In this way, the self-cleaning dust removal effect and efficiency of the filter element (2) can be enhanced, and the use experience of users is improved.

Description

Filter device and cleaning equipment Technical Field

[0001] The utility model relates to the technical field of gas filtering, in particular to a filtering device and a cleaning device provided with the filtering device. Background Art

[0002] The filter is a key component of the vacuum cleaner's internal purification system. Its primary function is to capture and separate dust, particles, and other impurities from the air sucked in by the vacuum cleaner through the filter element, ensuring that the released air is as clean as possible and does not cause secondary pollution to the indoor environment. For example, a flat filter is a commonly used air filtration device, primarily consisting of a frame-shaped bracket and a filter element fixed within the bracket. The filter element is equipped with a filter medium, typically non-woven fabric, nylon mesh, activated carbon filter material, or metal mesh, which is used to capture and isolate particulate matter in the air or fluid.

[0003] As the number of operations and working time accumulate, the filter element in the filter device will be clogged due to the attachment of a large amount of dust, affecting the filtering effect. Utility Model Content

[0004] In view of this, the utility model provides a filtering device and a cleaning device provided with the filtering device.

[0005] In order to achieve the above-mentioned purpose of the utility model, the utility model provides the following technical solutions:

[0006] A filtering device comprises a filter element and a bracket detachably connected to the filter element, the filter element comprising a filter element main body capable of performing a filtering function, and a filter element connecting portion arranged around the circumference of the filter element main body and connected thereto, the bracket comprising a cavity capable of accommodating the filter element main body, and a bracket connecting portion capable of supporting the filter element connecting portion; the filter element connecting portion and the bracket connecting portion have a fitting gap in the direction in which the filter element main body is subjected to airflow pressure, so as to provide space for the filter element connecting portion to produce elastic deformation in the direction of the airflow pressure.

[0007] Optionally, in the above-mentioned filtering device, the filter element connecting portion includes:

[0008] An extended plate area, the extended plate area is arranged around the outside of the filter element main body and connected thereto, and the fitting gap is formed between the extended plate area and the bracket connecting portion;

[0009] A lip area is arranged around the outer side of the extension plate area and connected thereto, and is sealed to the bracket connecting portion.

[0010] Optionally, in the above-mentioned filtering device, the support connecting portion includes:

[0011] a support plate area, the support plate area being located on the circumferential side of the circumferential side plate that encloses and forms the cavity and connected thereto, and being located below the extension plate area of ​​the filter element, forming the fitting gap with the extension plate area;

[0012] A sealing connection area is located on the peripheral side of the support plate area and is connected thereto, and is sealingly connected to the lip area of ​​the filter element.

[0013] Optionally, in the above-mentioned filtering device, the inner side surface of the sealing connection area is protrudingly provided with a boss structure;

[0014] The outer side surface of the lip area of ​​the filter element is provided with a snap-fitting groove adapted to the boss structure.

[0015] Optionally, in the above-mentioned filtering device, the thickness of the lip area is greater than the thickness of the extension plate area.

[0016] Optionally, in the above-mentioned filtering device, the top of the lip area protrudes upward relative to the extended plate area; and / or the bottom of the lip area protrudes downward relative to the extended plate area.

[0017] Optionally, in the above-mentioned filtering device, the main body of the filter element includes filter paper that has been folded forward and backward multiple times, and the multiple folding units of the filter paper are arranged in sequence along a first direction; in a vertical section parallel to the first direction, the top end connection line of the multiple folding units is a concave arc trajectory; and / or, the bottom end connection line of the multiple folding units is a concave arc trajectory.

[0018] Optionally, the above-mentioned filtering device further includes a first limiting rib; the first limiting rib is located below the main body of the filter element; in the arrangement direction of the multiple folding units of the main body of the filter element, the two side walls of the circumferential side plate in the bracket used to enclose the cavity are respectively connected to the first limiting rib.

[0019] Optionally, the above-mentioned filtering device further includes a second limiting rib; the second limiting rib is located below the main body of the filter element; in a direction perpendicular to the arrangement direction of the multiple folding units of the main body of the filter element, the two side walls of the circumferential side plate in the bracket used to enclose the cavity are respectively connected to the second limiting rib.

[0020] A cleaning device is provided with the filtering device described above.

[0021] Compared with the prior art, the filter device and cleaning equipment provided by the present invention reserve a fitting gap between the filter element connection part and the bracket connection part. When the filter element connection part is elastically deformed by airflow pressure, the fitting gap can provide the filter element connection part with the movement space required for deformation. Therefore, when the filter element is subjected to airflow pressure, not only the filter element main body can vibrate due to elastic deformation, but also the filter element connection part can elastically deform and vibrate, thereby expanding and improving the side elasticity of the filter element, effectively increasing the vibration amplitude of the filter element main body, thereby enhancing the self-cleaning and dust removal effect and efficiency of the filter element, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] FIG1 is a schematic structural diagram of a filtering device provided in an embodiment of the present utility model.

[0024] FIG2 is a half-section view of the filter device in FIG1 .

[0025] FIG3 is a half-section view of a filter element provided in an embodiment of the present invention.

[0026] FIG4 is a schematic structural diagram of a filter element provided in an embodiment of the present utility model.

[0027] FIG5 and FIG6 are respectively isometric views of a bracket provided by an embodiment of the present invention at different angles.

[0028] FIG7 is a schematic structural diagram of a pressing plate provided in an embodiment of the present utility model.

[0029] FIG8 is an internal cross-sectional view of a cleaning device provided in an embodiment of the present invention.

[0030] FIG9 is an exploded view of a cleaning device provided in an embodiment of the present invention.

[0031] in:

[0032] 1- bracket, 2- filter element, 3- pressure plate, 4- barrel, 5- lower cover, 6- upper cover, 7- flap,

[0033] 11-support plate area, 12-sealing connection area, 13-circumferential side plate,

[0034] 21- filter element main body, 22- filter element connection part,

[0035] 100-fit clearance, 121-boss structure,

[0036] 141-first limiting rib, 142-second limiting rib,

[0037] 210- bottom gap, 211- folding unit,

[0038] 221-Extension plate area, 222-Lip area,

[0039] 2221 - snap-fit ​​groove, 222a - top of the lip area, 222b - bottom of the lip area. DETAILED DESCRIPTION

[0040] The utility model provides a filtering device and a cleaning device provided with the filtering device, which can have a good self-cleaning and dust-removing effect, and avoid the filter element from being blocked due to a large amount of dust attached, thereby affecting the filtering effect.

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] Referring to Figures 1 to 4, an embodiment of the present invention provides a filtering device, which includes a filter element 2 and a bracket 1 detachably connected to the filter element 2.

[0043] The filter element 2 includes a filter element body 21 that performs a filtering function, and a filter element connection portion 22 (or an annular sealing ring) that surrounds and connects the filter element body 21. Specifically, the filter element body 21 is located within the central cavity of the annular filter element connection portion 22.

[0044] The bracket 1 includes a bracket connection portion capable of supporting the filter element connection portion 22 , and a cavity for accommodating the filter element main body 21 . The cavity is generally formed by enclosing a circumferential side plate 13 .

[0045] Furthermore, the core of the present invention is that the filter element connecting part 22 and the bracket connecting part have a fitting gap 100 (see Figure 2 for details) in the direction of the airflow pressure exerted on the filter element main body 21 (see F1 and F2 in Figure 3 for details), and the fitting gap 100 can provide the filter element connecting part 22 with a moving space for elastic deformation.

[0046] When the filter element connecting part 22 is elastically deformed by the airflow pressure, the fitting gap 100 can provide the filter element connecting part 22 with the movement space required for deformation. Therefore, when the filter element 2 is subjected to the airflow pressure, not only the filter element main body 21 can vibrate due to the elastic deformation, but the filter element connecting part 22 can also undergo elastic deformation and vibrate, thereby expanding and improving the side elasticity of the filter element 2, and can effectively increase the vibration amplitude of the filter element main body 21, thereby enhancing the self-cleaning and dust removal effect and efficiency of the filter element 2, and improving the user experience.

[0047] Please refer to Figures 1 to 4. In some embodiments, the above-mentioned filter element connection part 22 includes an extension plate area 221 and a lip area 222, wherein: the extension plate area 221 is an annular platform structure, which is arranged around the outside of the filter element main body 21 and connected thereto, and the extension plate area 221 is located above the support plate area 11 of the bracket connection part to form a fitting gap 100 therewith; the lip area 222 is arranged around the outside of the extension plate area 221 and connected thereto, and is used for sealing connection with the sealing connection area 12 of the bracket connection part.

[0048] When the airflow passes through the filter element in the forward direction, filtration is achieved. Moreover, by controlling the reverse flow of the airflow, the filter element can achieve a self-cleaning and dust-clearing effect. For details, see Figure 3: When the equipment in which the filter device is located is operating normally, the airflow passes through the filter body 21 of the filter element 2 from bottom to top, thereby achieving filtration. At this time, the filter body 21 is subjected to a positive pressure F1. When the filter device is in the self-cleaning state, the airflow blows from top to bottom toward the filter body 21 of the filter element 2, driving dust attached to the filter body 21 to fall off, achieving dust removal, thereby avoiding filter blockage and improving the filtration effect. At this time, the filter body 21 is subjected to a reverse pressure F2.

[0049] Furthermore, similar to the principle of a trampoline, the extended plate area 221 can increase the side elasticity of the filter element 2. When the filter element main body 21 is subjected to the aforementioned pressure F1 or F2, the extended plate area 221 can cause the filter element main body 21 to vibrate up and down, increasing the vibration amplitude of the filter element main body 21, thereby enhancing the self-cleaning effect and efficiency of the filter element and improving the user experience.

[0050] In some embodiments, the thickness of the extended plate area 221 in the filter element 2 is thinner than that of the lip area 222. That is, the extended plate area 221 is thinner than the lip area 222, as shown in area A of Figure 2. This improves the side elasticity of the filter element 2 by utilizing the extended plate area 221, while the lip area 222 ensures stable installation of the filter element 2. The thinner extended plate area 221 drives the filter element body 21 to vibrate up and down, enhancing the self-cleaning effect of the filter element 2.

[0051] For example, referring to Figures 2 and 3 , in some embodiments, the middle region of the filter element connection portion 22 is thinned, namely, region A in Figure 2 , to form an extended plate region 221. In this case, referring to Figure 3 , the top 222a of the lip region 222 protrudes upward relative to the extended plate region 221, and / or the bottom 222b of the lip region 222 protrudes downward relative to the extended plate region 221. Preferably, an annular hollow groove is formed in the bottom middle region of the filter element connection portion 22. In a specific implementation, the outer edge of this annular hollow groove overlaps the bracket 1, while the inner edge protrudes relative to the bracket 1 toward the central cavity region of the bracket 1. In other words, the inner edge of this annular hollow groove is suspended in the central cavity region of the bracket 1, neither overlapping nor supported by the bracket 1. Therefore, the annular hollow groove at the bottom of the filter element connection portion 22 provides the required movement space for the filter element main body 21 to vibrate up and down. This movement space is the space required to ensure that the filter element main body 21 has a certain vibration amplitude when vibrating up and down.

[0052] It should be noted that in other embodiments, if the bottom of the filter element connecting portion 22 does not have the aforementioned annular hollow groove structure, the filter device can still achieve a self-cleaning effect through the inherent elasticity of the filter element main portion 21 and the extended plate area 221. However, the aforementioned annular hollow groove structure helps increase the vibration amplitude of the extended plate area 221 and the filter element main portion 21, thereby improving the shaking effect. In actual implementation, the specific dimensions of the extended plate area 221 and the annular hollow groove structure at its bottom can be designed by technicians according to actual needs, and this utility model does not impose specific limitations on this.

[0053] In some embodiments, the filter element connection portion 22 is glue-filled, so that the filter element 2 formed by the filter element main portion 21 and the filter element connection portion 22 forms an integrated connected structure. Furthermore, as shown in FIG3 , the filter element main portion 21 comprises filter paper that has been folded multiple times, with multiple folded units 211 arranged sequentially along a first direction. In a vertical cross-section parallel to the first direction, the top ends of the multiple folded units 211 form a concave arc-shaped trajectory L, and / or the bottom ends of the multiple folded units 211 form a concave arc-shaped trajectory L. That is, the top ends of the multiple folded units 211 are located within the first curved surface S1, and / or the bottom ends of the multiple folded units 211 are located within the second curved surface S2. As can be seen, the curved shape of the filter element 2 increases the bottom gap 210 between adjacent folded units 211 compared to a flat filter element. When air is blown through the filter element 2, the vibration of the filter element shakes off more dust, thereby improving the self-cleaning ability of the filter device.

[0054] In addition, referring to Figures 1, 2, 5 and 6, in the filtering device provided by the present invention, the bracket 1 is detachably connected to the filter element 2, and the bracket 1 includes a circumferential side plate 13 and a bracket connecting portion, wherein: the circumferential side plate 13 forms a cavity capable of accommodating the filter element main body 21, that is, the filter element main body 21 is located in the accommodating cavity formed by the circumferential side plate 13 of the bracket 1; the bracket connecting portion can support the filter element connecting portion 22 and seal with it.

[0055] In some embodiments, the bracket connection portion is provided with a groove structure that can accommodate and seal the lip area 222 of the filter element connection portion 22. For example, referring to Figures 2 and 5, the bracket connection portion includes a support plate area 11 and a sealing connection area 12, wherein: the support plate area 11 is located on the circumferential side of the circumferential side plate 13 and is connected thereto, and is located below the extension plate area 221 of the filter element 2, with the aforementioned mating gap 100 being provided between the support plate area 11 and the extension plate area 221; the sealing connection area 12 is located on the circumferential side of the support plate area 11 and is connected thereto, and is sealed to the lip area 222 of the filter element 2.

[0056] Furthermore, in some embodiments, a snap-fit ​​structure is provided at the aforementioned "sealed connection". For example, referring to FIG2 , a boss structure 121 is protruding from the inner side surface of the sealed connection area 12, and a snap-fit ​​groove 2221 is provided on the outer side surface of the lip area 222 of the filter element 2, which is overlapped and matched with the boss structure 121. Thus, when the filter element 2 is placed in the bracket 1, the filter element main body 21 of the filter element 2 is located in the accommodating cavity formed by the circumferential side plate 13 of the bracket 1, and at the same time, the filter element connection portion 22 of the filter element 2 is automatically overlapped and sealed with the sealed connection area 12 of the bracket 1. When the equipment in which the filter element device is located is working, the filter element connection portion 22 and the bracket 1 are sealed to ensure that the airflow is filtered only through the filter element main body 21.

[0057] It should be noted here that the "sealed connection" mentioned in this article can be a tightly fitting abutment / overlap, or other connection methods such as snap connection, bonding, screw fastening connection, etc., as long as it can ensure that the sealing connection area 12 of the bracket 1 and the lip area 222 of the filter element 2 are sealed and leak-proof at this point, and the normal filtering function of the filter element 2 is guaranteed.

[0058] Referring to Figures 2, 5, and 6, in some embodiments, a first limiting rib 141 is provided at the bottom of the bracket 1. The first limiting rib 141 is located below the filter element main body 21; in the arrangement direction of the multiple folding units 211 of the filter element main body 21 (i.e., the first direction shown in Figure 3), the two side walls of the circumferential side plate 13 are respectively connected to the first limiting rib 141.

[0059] Furthermore, a second limiting rib 142 is also provided at the bottom of the bracket 1. The second limiting rib 142 is located below the filter element main body 21; in a direction perpendicular to the arrangement direction of the multiple folding units 211 of the filter element main body 21, the two side walls of the circumferential side plate 13 are respectively connected to the second limiting rib 142. Moreover, as shown in Figures 2 and 6, the first limiting rib 141 and the second limiting rib 142 are connected at the intersection. Furthermore, the first limiting rib 141 and the second limiting rib 142 are both arc-shaped ribs that adapt to the arc-shaped bottom surface of the filter element main body 21. It can be understood that although the first limiting rib 141 and the second limiting rib 142 are both located at the bottom of the filter element main body 21 and adapted to its shape, the first limiting rib 141 and the second limiting rib 142 both maintain a preset gap greater than zero with the filter element main body 21. It can be seen that the circumferential side plate 13 and the first limiting rib 141 and the second limiting rib 142 in the bracket 1 can limit the deformation range of the filter element.

[0060] Please refer to Figures 1, 7, and 8. In some embodiments, a pressure plate 3 (i.e., a handle) is further hingedly provided on the outer side of the bracket 1. When installing the filter device, the pressure plate 3 is rotated to a horizontal position (as shown in Figure 1). The outer protrusion of the pressure plate 3 engages with the limiting groove of the filter device mounting structure (e.g., the lower cover 5 of the vacuum cleaner), thereby fixing the filter device within the mounting structure inside the device. When unlocking the filter device, the pressure plate 3 is rotated to a vertical (or non-horizontal) position (not shown in the figure, but refer to the unlocking arrow direction summarized in Figure 1). The outer protrusion of the pressure plate 3 disengages from the limiting groove of the filter device mounting structure, and the filter device is unlocked, thereby allowing the filter device to be removed from the cleaning device.

[0061] In specific implementation, depending on different application scenarios, the material of the bracket 1 can be a paper frame, a plastic frame, an aluminum frame or a galvanized iron frame to meet different strength requirements and usage environments.

[0062] In summary, it can be seen that the filtering device provided by the embodiment of the present invention is applicable to many occasions requiring air purification (or other gas purification, fluid coarse filtration).

[0063] In addition, an embodiment of the present invention further provides a cleaning device, in which the filtering device described above is provided.

[0064] When the filter device in the cleaning equipment is in the self-cleaning state, the flap 7 in the air duct in the cleaning equipment is opened, and the gas supplied by the air duct enters the barrel 4 from the filter device, which will generate a downward force F2 on the filter device. This force will cause the filter element main body 21 in the filter device to deform downward. At this time, the first limiting rib 141 and the second limiting rib 142 mentioned above can prevent the filter element main body 21 from excessive deformation, thereby ensuring the deformation displacement of the filter element 2.

[0065] When the cleaning equipment is in normal working condition, that is, the filter device plays a filtering role and is not self-cleaning, the flap 7 in the air duct of the cleaning equipment is closed, and the pressure P1 in the barrel 4 and the pressure P2 generated in the air duct, P1>P2, cause the filter element main body 21 of the filter device to be subjected to a force F1 from bottom to top, thereby realizing the shaking self-cleaning effect of the filter element.

[0066] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed.

[0067] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0068] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A filtering device, comprising a filter element (2) and a bracket (1) detachably connected to the filter element (2), wherein the filter element (2) comprises a filter element main body (21) capable of performing a filtering function, and a filter element connecting portion (22) disposed around the circumference of the filter element main body (21) and connected thereto, and the bracket (1) comprises a cavity capable of accommodating the filter element main body (21) and a bracket connecting portion capable of supporting the filter element connecting portion (22), characterized in that: The filter element connecting portion (22) and the bracket connecting portion have a fitting gap (100) in the direction in which the filter element main body (21) is subjected to airflow pressure, so as to provide space for the filter element connecting portion (22) to generate elastic deformation in the direction of the airflow pressure.

2. The filtering device according to claim 1, wherein The filter element connecting portion (22) comprises: an extended plate area (221), the extended plate area (221) being arranged around the outside of the filter element main body (21) and connected thereto, and forming the fitting gap (100) between the extended plate area (221) and the bracket connecting portion; A lip area (222) is arranged around the outside of the extension plate area (221) and connected thereto, and is sealed to the bracket connection portion.

3. The filter device according to claim 2, wherein the support connection portion comprises: a support plate area (11), the support plate area (11) being located on the circumferential side of the circumferential side plate (13) that encloses and forms the cavity and connected thereto, and being located below the extension plate area (221) of the filter element (2), with the fitting gap (100) being formed between the support plate area (11) and the extension plate area (221); A sealing connection area (12), the sealing connection area (12) is located on the peripheral side of the support plate area (11) and connected thereto, and the sealing connection area (12) is sealingly connected to the lip area (222) of the filter element (2).

4. The filtering device according to claim 3, wherein The inner side surface of the sealing connection area (12) is provided with a boss structure (121); The outer side surface of the lip area (222) of the filter element (2) has a snap-fitting groove (2221) adapted to the boss structure (121).

5. The filtering device according to claim 3, wherein The thickness of the lip area (222) is greater than the thickness of the extension plate area (221).

6. The filtering device according to claim 3, wherein The top (222a) of the lip region (222) protrudes upward relative to the extension plate region (221); And / or, the bottom (222b) of the lip area (222) protrudes downward relative to the extension plate area (221).

7. The filtering device according to claim 1, wherein The filter element main body (21) comprises filter paper that has been folded forward and backward multiple times, and the multiple folding units (211) of the filter paper are arranged in sequence along a first direction; In a vertical cross-section parallel to the first direction, a line connecting the top ends of the plurality of folding units (211) forms a concave arc track (L); and / or a line connecting the bottom ends of the plurality of folding units (211) forms a concave arc track (L).

8. The filtering device according to claim 1, wherein Also includes a first limiting rib (141); The first limiting rib (141) is located below the filter element main body (21); in the arrangement direction of the multiple folding units (211) of the filter element main body (21), the two side walls of the circumferential side plate (13) in the bracket (1) for enclosing and forming the cavity are respectively connected to the first limiting rib (141).

9. The filtering device according to claim 1, wherein Also includes a second limiting rib (142); The second limiting rib (142) is located below the filter element main body (21); in a direction perpendicular to the arrangement direction of the multiple folding units (211) of the filter element main body (21), two side walls of the circumferential side plate (13) in the bracket (1) for enclosing and forming the cavity are respectively connected to the second limiting rib (142).

10. A cleaning device, characterized in that: A filtering device according to any one of claims 1 to 9 is provided.

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