Filtering structure and dust collection device applying same

Abstract

The utility model discloses a filtering structure, which comprises a filtering piece, the first end of the filter piece fixing frame is connected with the first end of the filter piece, the second end of the filter piece fixing frame is partially sunken inwards to form a mounting groove, a first ventilation opening is formed in the filter piece fixing frame, and the filter piece covers the first ventilation opening; the first sealing piece is arranged in the mounting groove; the connecting piece is provided with a second ventilation opening; the first side, close to the filtering piece fixing frame, of the connecting piece partially protrudes outwards to form a protruding part, and at least part of the protruding part stretches into the installation groove to make contact with or abut against the first sealing piece. The dust collection device is characterized in that the filtering structure is arranged in the shell. The service life of the first sealing piece is prolonged while the sealing performance of the joint of the connecting piece and the filter piece fixing frame is guaranteed, a user can replace the filter piece conveniently, and the filter piece has the advantages of being long in service life and high in sealing performance.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum cleaners, in particular to a filtering structure and a dust collecting device using the filtering structure. Background Art

[0002] In vacuum cleaner technology, the sealing structure between the dust bin, filter and fan is crucial to the performance of the vacuum cleaner. However, many portable vacuum cleaners on the market currently have poor sealing structure reliability, resulting in gaps during use, allowing some air to flow directly from the gaps without being filtered, rather than entering through the air inlet, which greatly reduces the efficiency of the vacuum cleaner.

[0003] In response to the above problems, the prior art, such as a Chinese utility model patent with patent number CN201020501935.5 (publication number CN201759487U) entitled "Vacuum cleaner with HEPA seal" discloses a solution of installing a sealing ring between the air outlet wall and the HEPA, thereby preventing the air from flowing out from the gap between the HEPA and the air outlet wall without being fully filtered; however, the solution in the above patent will generate greater friction with the air outlet wall when installing or replacing the HEPA, thereby reducing the service life of the seal, and since the friction between the sealing ring and the air outlet wall is relatively large, the surface near the air outlet will be damaged when the sealing ring is replaced, making it difficult to replace. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a filter structure which is easy to replace the seal and convenient to install the filter element, and a dust collecting device using the filter structure in view of the above-mentioned existing technical status;

[0005] The first technical solution adopted by the utility model to solve the above technical problems is: the filtering structure includes:

[0006] A filter element for filtering dust;

[0007] It is characterized by also including:

[0008] A filter element fixing frame, wherein the first end is connected to the first end of the filter element, and the second end is partially recessed inward to form a mounting groove, the filter element fixing frame is provided with a first vent, and the filter element covers the first vent;

[0009] A first sealing member is disposed in the mounting groove;

[0010] The connecting member is provided with a second vent, and the first vent is connected to the second vent; the connecting member protrudes outward partially on the first side close to the filter fixing frame to form a protrusion, and the protrusion at least partially extends into the installation groove to contact or abut the first sealing member.

[0011] In order to further enhance the sealing performance of the filter structure during use, preferably, a second sealing member is provided on the outer side of the filter element fixing frame.

[0012] Furthermore, the connecting piece is integrally formed.

[0013] In order to facilitate users to replace the connecting piece, preferably, the connecting piece is formed by split assembly, including:

[0014] A first sub-connecting member, wherein the protrusion is formed on a surface of the first sub-connecting member close to a second end of the filter element fixing frame;

[0015] a second sub-connecting member, connected to the first sub-connecting member in a detachable manner;

[0016] The third sealing member is provided between the first sub-connecting member and the second sub-connecting member. The detachable connection between the first sub-connecting member and the second sub-connecting member enables the first sub-connecting member with worn protrusion to be independently removed and replaced when the above-mentioned filter structure is applied inside other dust removal devices. The provision of the third sealing member reduces the vibration of the filter element fixing frame when the fan is working, and prevents the filter element fixing frame or the filter element from being separated from the connecting member after the filter structure is installed.

[0017] The second technical solution adopted by the utility model to solve the above technical problems is: the dust suction device includes a shell and a suction piece arranged in the shell, the suction piece is used to generate negative pressure in the shell, the shell has an air inlet and an air outlet, and is characterized in that: the above-mentioned filtering structure is arranged in the shell, the second side of the connecting piece faces the air outlet and the second end of the filter element corresponds to the air inlet.

[0018] In order to facilitate the user to replace the internal parts of the dust collection device, preferably, a second seal is provided between the outer side of the filter holder and the inner wall of the shell, the shell includes a front shell and a rear shell, the front shell and the rear shell are connected in a detachable manner, the filter, the filter holder, the first seal, and the second seal are provided in the front shell, and the connecting member and the suction member are provided in the rear shell. The user can replace the filter, the filter holder, the first seal, and the second seal at the same time by removing the front shell.

[0019] Furthermore, the suction member is a fan.

[0020] Compared with the prior art, the advantages of the utility model are:

[0021] 1. The arrangement that the protrusion at least partially extends into the installation groove and contacts or abuts against the first seal prevents the housing from directly contacting the seal, thereby avoiding friction between the first seal and the housing when installing the filter structure, and prolonging the service life of the first seal while ensuring the sealing of the connection between the connector and the filter element fixing frame, thus having the advantage of "one thing for two purposes";

[0022] 2. Users can replace the filter holder and the filter together by separating the connector and the filter holder. The friction during the separation process is small, which is convenient for users to replace the filter.

[0023] 3. Applying the above-mentioned filtering structure to the dust collection device can ensure that the dust-containing air entering through the air inlet when the suction piece is working is fully filtered; the setting of the installation groove avoids the first sealing member from being offset due to the vibration of the suction piece, which affects the filtering effect, and has the advantages of long service life and strong sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural explosion diagram of the filtering structure of Example 1 of the utility model;

[0025] Figure 2 This is a schematic structural diagram of a filter element fixing frame according to Embodiment 1 of the present utility model;

[0026] Figure 3 It is a cross-sectional view of the filtering structure of Example 1 of the utility model;

[0027] Figure 4 This is a structural explosion diagram of the filtering structure of Example 2 of the utility model;

[0028] Figure 5 It is a cross-sectional view of the filtering structure of Example 2 of the utility model;

[0029] Figure 6 This is a schematic structural diagram of a dust collecting device according to Embodiment 3 of the present utility model;

[0030] Figure 7 This is an exploded view of the structure of a dust collecting device in which the connecting piece of Example 3 of the utility model is integrally formed;

[0031] Figure 8 for Figure 6 Section view along AA direction;

[0032] Fig. 9 This is a structural explosion diagram of a dust collection device in which the connecting piece of Example 3 of the utility model is assembled in a split manner.

[0033] Fig.10 This is a cross-sectional view of a dust collecting device in which the connecting piece of Example 3 of the utility model is assembled in a split manner. DETAILED DESCRIPTION

[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0035] Example 1

[0036] like Figures 1 to 3 The figure shows a preferred embodiment of the utility model. The filter structure of this embodiment is mainly used to be installed in a dust collecting device to filter small solid particles or water vapor in the air flowing through. The existing filter structure is inconvenient to install in the dust collecting device. When replacing the sealing ring, the friction between the HEPA and the air outlet wall is large. Therefore, it is beneficial to provide a filter structure that is easy to replace the sealing element and convenient to install the filter element. The following will expand the detailed description of the filter structure:

[0037] See also Figures 1 to 3 The filter structure includes a filter element 1, a filter element fixing frame 2, a first sealing member 3 and a connecting member 4, wherein the filter element 1 is used to filter dust; the first end of the filter element fixing frame 2 is connected to the first end of the filter element 1, and the second end of the filter element fixing frame 2 is partially recessed inward to form a mounting groove 21, the filter element fixing frame 2 is provided with a first vent 22, and the filter element 1 covers the first vent 22; the first sealing member 3 is arranged in the mounting groove 21; the connecting member 4 is provided with a second vent 41, and the first vent 22 is connected to the second vent 41; the first side of the connecting member 4 close to the filter element fixing frame 2 is partially protruded outward to form a protrusion 42, and the protrusion 42 at least partially extends into the mounting groove 21 to contact or abut the first sealing member 3. The filter element 1 can be a filter element made of HEPA, filter cotton or other materials.

[0038] A second sealing member 20 is provided on the outer side of the filter element fixing frame 2, so as to further enhance the sealing performance of the filter structure when in use.

[0039] Finally, the connecting piece 4 is integrally formed.

[0040] The working principle of this filtering structure is as follows: dust-laden air is blown in from one side of the filter element 1, filtered by the filter element 1 and flows out from the second vent 41. During this process, the first sealing element 3 will close the assembly gap between the filter element fixing frame 2 and the connecting element 4, and the dust-laden air will only pass through the filter element 1 and flow from the first vent 22 to the second vent 41, so it has a strong sealing performance. When assembling this filtering structure, the user first places the first sealing element 3 in the mounting groove 21, aligns the protrusion 42 with the mounting groove 21 and abuts or contacts the first sealing element 3, and then places the entire filtering structure into other dust removal devices for use, so that it is easy to install.

[0041] Example 2: Filter structure with separate connectors

[0042] Please see Figures 4 to 5The filter structure of this embodiment is basically similar to the filter structure of embodiment 1, except that: the connector 4 is formed by split assembly, including a first sub-connector 43, a second sub-connector 44 and a third sealing member 45, wherein the protrusion 42 is formed on the surface of the first sub-connector 43 close to the second end of the filter element fixing frame 2; the second sub-connector 44 is connected to the first sub-connector 43 in a detachable manner, and the third sealing member 45 is arranged between the first sub-connector 43 and the second sub-connector 44. The detachable connection between the first sub-connector 43 and the second sub-connector 44 enables the first sub-connector 43 with the worn protrusion 42 to be independently removed and replaced when the above-mentioned filter structure is applied to other dust removal devices, so that the user can replace the connector 4 conveniently. The provision of the third sealing member 45 reduces the vibration of the filter element fixing frame 2 caused by the fan when working, and prevents the filter element fixing frame 2 or the filter 1 from being separated from the connector 4 after the filter structure is installed.

[0043] Example 3: Dust collecting device using the above-mentioned filtering structure

[0044] The dust collecting device of this embodiment is mainly used to clean the dust on the surface of furniture in daily life. After the dust accumulates on the surface of the filter element, it needs to be replaced. After the sealing ring is worn out for a long time, it will affect the sealing performance. Therefore, it will be beneficial to provide a dust collecting device that is easy to replace the sealing element and convenient to install the filter element. The detailed structure of the dust collecting device will be described below:

[0045] Please see Figures 6 to 10 The dust collection device includes a shell 5 and a suction piece 6 arranged in the shell 5. The suction piece 6 is used to generate negative pressure in the shell 5. The shell 5 has an air inlet 51 and an air outlet 52. The shell 5 is provided with the filtering structure mentioned in Example 1 or Example 2. The second side of the connecting piece 4 faces the air outlet 52 and the second end of the filter 1 corresponds to the air inlet 51. In addition, the suction piece 6 is connected to a power supply that provides a working voltage through a switching circuit. The power supply can be arranged outside the shell 5 or inside the shell 5. The air inlet 51 can also be connected to a suction nozzle to control the dust collection range and facilitate the user to suck out the dust in the elongated slit through the suction nozzle. The structure of the connecting piece 4 in the dust collection device of this embodiment adopts the one-piece molding mentioned in Example 1 (see Figures 6 to 8 ) can also adopt the structure of split assembly mentioned in Example 2 (see Figures 9 and 10 ).

[0046] A second seal 20 is provided between the outer side of the filter holder 2 and the inner wall of the housing 5. The housing 5 includes a front housing 53 and a rear housing 54. The front housing 53 and the rear housing 54 are connected in a detachable manner. The front housing 53 is provided with a filter 1, a filter holder 2, a first seal 3, and a second seal 20. The rear housing 54 is provided with a connector 4 and a suction member 6. The user can remove the front housing 53 and replace the filter 1, the filter holder 2, the first seal 3, and the second seal 20 at the same time, which is convenient for the user to replace the internal parts of the dust collector. In addition, the lower end of the rear housing 54 is partially protruded to form a handle, and a power source (battery) can be installed in the handle.

[0047] Finally, the suction element 6 is a fan.

[0048] The working principle of the dust suction device of this embodiment is as follows: after the user aligns the air inlet 51 or the suction nozzle with the space to be cleaned and turns on the power switch, the suction member 6 generates negative pressure in the shell 1, and the dust-containing air enters the shell 5 through the air inlet 51, is filtered by the filter element 1, and the clean air is discharged from the air outlet 52 through the first ventilation port 22 and the second ventilation port 41. In this process, the first sealing member 3 blocks the assembly gap between the filter element fixing frame 2 and the connecting member 4, and the second sealing member 20 blocks the gap between the filter element fixing frame 2 and the shell 5, thereby ensuring that the dust-containing air entering the shell 5 is fully filtered; when assembling and replacing the first sealing member 3 and the second sealing member 20, the user pulls out the front shell 53, takes out the filter element 1, the filter element fixing frame 2, the first sealing member 3, and the second sealing member 20, and then replaces the worn first sealing member 3, the second sealing member 2, and the dusty filter element 1, and then reassembles them, which has the advantage of convenient replacement operation.

Claims

1. A filtering structure, comprising: A filter element (1) for filtering dust; It is characterized in that Also included are: A filter element fixing frame (2), the first end of which is connected to the first end of the filter element (1), and the second end of which is partially recessed inward to form a mounting groove (21), the filter element fixing frame (2) is provided with a first ventilation opening (22), and the filter element (1) covers the first ventilation opening (22); A first sealing member (3) is disposed in the mounting groove (21); The connecting member (4) is provided with a second ventilation opening (41), and the first ventilation opening (22) is communicated with the second ventilation opening (41); the connecting member (4) is partially protruded outwardly on a first side close to the filter element fixing frame (2) to form a protrusion (42), and the protrusion (42) at least partially extends into the installation groove (21) to contact or abut against the first sealing member (3).

2. The filtering structure according to claim 1, characterized in that: A second sealing element (20) is provided on the outer side of the filter element fixing frame (2).

3. The filtering structure according to claim 1, characterized in that: The connecting piece (4) is integrally formed.

4. The filtering structure according to claim 1, characterized in that: The connecting member (4) is formed by split assembly and includes: A first sub-connecting member (43), wherein the protrusion (42) is formed on a surface of the first sub-connecting member (43) close to the second end of the filter element fixing frame (2); The second sub-connecting member (44) is detachably connected to the first sub-connecting member (43); and the third sealing member (45) is arranged between the first sub-connecting member (43) and the second sub-connecting member (44).

5. A dust collecting device, comprising a housing (5) and a suction member (6) arranged in the housing (5), wherein the suction member (6) is used to generate negative pressure in the housing (5), and the housing (5) has an air inlet (51) and an air outlet (52), characterized in that: The housing (5) is provided with a filter structure as claimed in any one of claims 1 to 4, the second side of the connector (4) faces the air outlet (52) and the second end of the filter element (1) corresponds to the air inlet (51).

6. The dust collecting device according to claim 5, characterized in that: A second sealing member (20) is provided between the outer side of the filter element fixing frame (2) and the inner wall of the housing (5); the housing (5) comprises a front housing (53) and a rear housing (54); the front housing (53) and the rear housing (54) are connected in a detachable manner; the filter element (1), the filter element fixing frame (2), the first sealing member (3), and the second sealing member (20) are provided in the front housing (53); and the connecting member (4) and the suction member (6) are provided in the rear housing (54).

7. The dust collecting device according to claim 5, characterized in that: The suction member (6) is a fan.

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