Self-cleaning device for filter assembly of dust collector

Abstract

The utility model relates to the technical field of filter cleaning, and discloses a self-cleaning device of a dust collector filtering assembly, which comprises a cabin body, an inner cavity is arranged in the cabin body, a base used for installing the filtering assembly is arranged in the inner cavity, and a negative pressure channel capable of generating negative pressure is arranged on the outer side of the cabin body; a front filtering cleaning air duct and a rear filtering cleaning air duct which are independent from each other are formed between the cabin body and the filtering assembly, the front filtering cleaning air duct and the rear filtering cleaning air duct are both communicated with the negative pressure channel, the rear filtering cleaning air duct penetrates through the rear filter, and the front filtering cleaning air duct penetrates through the front filter. The filtering assembly is placed in the cabin body, the negative pressure channel generates suction force through negative pressure, reverse blowing cleaning is carried out on the front filter and the rear filter along the front filtering cleaning air channel and the rear filtering cleaning air channel so as to avoid contact pollution of a user, the two cleaning air channels are mutually and independently sealed, and secondary pollution caused in the cleaning process can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of filter cleaning, in particular to a self-cleaning device for a filter assembly of a vacuum cleaner. Background Art

[0002] The filtering components on the vacuum cleaner main unit mainly play the role of ensuring the cleaning effect and protecting the vacuum motor. Therefore, front and rear filters are usually arranged upstream and downstream of the vacuum motor (intake and exhaust ends) respectively; the former is used to block dust from entering the vacuum motor to prevent it from clogging the motor's heat dissipation channels and wearing out the motor's components, affecting the motor's heat dissipation effect and service life; the latter is used to filter out tiny dust particles to prevent dust from escaping into the air again during the vacuuming process, thereby ensuring that the vacuum cleaner can achieve good cleaning effects.

[0003] The Chinese patent with publication number CN221331058U disclosed on July 16, 2024, a cordless vacuum cleaner that is easy to maintain. The internal filter includes an integrated front filter assembly and a rear filter assembly, which are located upstream and downstream of the vacuum motor respectively. At the same time, the filter can be removed separately from the vacuum cleaner body; it not only meets the requirements for air filtration, but also can remove the filter separately without removing the dust cup, and maintain the front and rear filter assemblies at the same time, which greatly reduces the user's operating difficulty during actual use and improves their usage experience.

[0004] The filter disclosed in the aforementioned patent integrates the front and rear filter components into an integrated structure. Although this reduces the difficulty of disassembly and assembly on the vacuum cleaner, since its two filter surfaces are almost vertical, it is not convenient in actual manual cleaning. In addition, dust and other particulate impurities adsorbed on the filter component are peeled off and scattered everywhere, causing secondary pollution. Therefore, we propose a self-cleaning device for the vacuum cleaner filter component. Utility Model Content

[0005] The purpose of this utility model is to overcome the deficiencies in the prior art and provide a self-cleaning device for a vacuum cleaner filter assembly, in which an integrated filter assembly is placed inside a cabin, suction is generated by the negative pressure at the negative pressure channel, and the front filter and the rear filter of the filter assembly are respectively blown in the reverse direction for cleaning through the front filter cleaning air duct and the rear filter cleaning air duct to avoid user contact and contamination.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A self-cleaning device for a vacuum cleaner filter assembly includes a cabin, an inner cavity is defined within the cabin, a base for mounting the filter assembly is provided in the inner cavity, and a negative pressure channel capable of generating negative pressure is provided on the outer side of the cabin;

[0008] A mutually independent front filter clean air duct and rear filter clean air duct are formed between the cabin and the filter assembly, both of which are connected to the negative pressure channel, and the rear filter clean air duct passes through the rear filter, and the front filter clean air duct passes through the front filter.

[0009] Optionally, the rear filter cleaning air duct includes an inner cavity, a buffer cavity and a rear filter air duct that are connected in sequence; baffles are provided at the front and rear ends of the base, the buffer cavity is enclosed between the baffles, the rear filter and the base, and the buffer cavity is connected to the inner cavity through the rear filter; the rear filter air duct is provided on the outside of the cabin, and the two ends of the rear filter air duct are respectively connected to the buffer cavity and the negative pressure channel.

[0010] Optionally, through holes are provided on both the left and right sides of the base, and the buffer cavity and the rear filter air duct are connected through the through holes.

[0011] Optionally, positioning grooves for positioning the filter assembly are further provided on the left and right sides of the base, the positioning grooves are located outside the through hole, and the filter duct and the negative pressure channel are connected through a central channel.

[0012] Optionally, the front filter cleaning air duct includes a side air duct, a front end cavity and a front filter air duct that are connected in sequence; the side air duct is opened at the bottom of the inner cavity and is connected thereto, the front end cavity is enclosed and formed between the baffle and the front filter, and one end of the front filter air duct is connected to the front end cavity through the front filter, and the other end is connected to the negative pressure channel.

[0013] Optionally, a shell is provided at the front end of the cabin body, an installation cavity communicating with the inner cavity is provided inside the shell, and a cleaning mechanism for cleaning the front filter is provided on the shell.

[0014] Optionally, the cleaning mechanism includes a cleaning brush head rotatably installed in the installation cavity, the cleaning brush head abuts against the front filter, and a driving component for driving the cleaning brush head to rotate is provided on the outside of the shell.

[0015] Optionally, the driving assembly includes a driving motor, a rotating shaft and a synchronous belt, the driving motor is fixedly mounted on the outside of the cabin, and a driving wheel is installed at the output end of the driving motor; the rotating shaft is rotatably passed through the shell, one end of the rotating shaft is connected to the cleaning brush head, and a driven wheel is installed at the other end, and the driven wheel and the driving wheel are connected through the synchronous belt.

[0016] Optionally, a cover plate that can be flipped open and closed in the longitudinal direction is installed on the top of the cabin body, the rear end of the cover plate is rotatably connected to the top of the cabin body, and a groove is also provided on the cover plate.

[0017] Beneficial effects

[0018] (1) The filter assembly is placed inside the cabin. The negative pressure channel uses negative pressure to generate suction, and reversely blows air along the front filter cleaning air duct and the rear filter cleaning air duct to clean the front filter and the rear filter respectively to avoid user contact contamination. The two cleaning air ducts are independently sealed to avoid secondary contamination during the cleaning process.

[0019] (2) In actual working conditions, the pollution degree of the front filter is much greater than that of the rear filter. Therefore, a cleaning mechanism for assisting negative pressure suction cleaning is set at the front end of the cabin. The dirt firmly adsorbed on the front filter is separated by the repeated sweeping of the cleaning brush head, which effectively improves the cleaning effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of the self-cleaning device according to an embodiment of the present utility model;

[0021] Figure 2 This is a schematic structural diagram of a filter assembly for a vacuum cleaner according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the position structure of the filter assembly and the self-cleaning device in an embodiment of the present utility model;

[0023] Figure 4 This is a schematic diagram of the path structure of the post-filtration cleaning air duct in an embodiment of the present utility model;

[0024] Figure 5 This is a schematic diagram of the internal structure of the self-cleaning device according to an embodiment of the present utility model;

[0025] Figure 6 This is a schematic diagram of the path structure of the front filter cleaning air duct in an embodiment of the present utility model;

[0026] Among them, 1, cabin; 2, cover; 201, groove;

[0027] 3. Base; 301. Baffle; 302. Through hole; 303. Positioning groove;

[0028] 401, rear filter air duct; 402, central channel;

[0029] 501, side air duct; 502, housing; 503, front filter air duct; 6, negative pressure channel;

[0030] 701, cleaning brush head; 702, rotating shaft; 703, driven pulley; 704, driving pulley; 705, driving motor; 706, synchronous belt;

[0031] 801, bracket; 802, rear filter; 803, front filter. DETAILED DESCRIPTION

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show components related to the present invention.

[0033] like Figure 2 As shown, the integrated filter assembly suitable for the vacuum cleaner includes a bracket 801, and the rear filter 802 and the front filter 803 are respectively installed on the circumferential surface and the front end surface of the bracket 801; in normal use, the front filter 803 is located at the air inlet end of the vacuum motor, and usually adopts air inlet filter cotton, and the rear filter 802 is located at the air outlet end of the vacuum motor, and usually adopts air outlet HEPA.

[0034] Under the action of the vacuum motor, the air flow carrying dirt passes through the front filter 803 from front to back, intercepting most of the dirt. The remaining tiny particles and air flow then pass through the rear filter 802 from inside to outside. After being intercepted by the rear filter 802, it is ensured that the discharged air will not cause secondary pollution to the external environment.

[0035] Example 1

[0036] like Figures 1-6 As shown, a self-cleaning device for a vacuum cleaner filter assembly includes a cabin 1, an inner cavity is opened inside the cabin 1, and a cover plate 2 that can be flipped open and closed in the longitudinal direction is installed on the top of the cabin 1 to complete the closing and opening of the inner cavity; the cover plate 2 can be embedded in the top of the cabin 1, and the rear end of the cover plate 2 is rotatably connected to the top of the cabin 1. In order to facilitate the lifting and opening of the cover plate 2, a groove 201 is also opened on it, and the user can quickly open the cover plate 2 through the groove 201.

[0037] As mentioned above, a base 3 is provided on the inner side of the cabin 1, and a negative pressure channel 6 is provided on the outer side; the base 3 is located in the inner cavity and is used to install an integrated filter assembly, and the negative pressure channel 6 is connected to an external device that can generate negative pressure, that is, the negative pressure device can generate negative pressure suction in the negative pressure channel 6, and a dust bag and other components for collecting dust are also provided between the two.

[0038] After the filter assembly is installed into the inner cavity of the cabin 1, independent front filter clean air duct and rear filter clean air duct are formed between the cabin 1 and the filter assembly. Both are connected to the negative pressure channel 6, and the rear filter clean air duct passes through the rear filter 802, and the front filter clean air duct passes through the front filter 803.

[0039] The negative pressure channel 6 generates suction, and clean air is sucked in from above the rear filter 802. When passing through the rear filter 802, the dust attached to it is taken away. The dusty and dirty air is sucked in and filtered through the clean air duct, and finally sent into the dust bag along the negative pressure channel 6.

[0040] Similarly, the negative pressure channel 6 generates suction, and clean air is sucked in from the side. When passing through the front filter 803, the dust and dirt attached to it are taken away. The air carrying dust and dirt is sucked into the front filter clean air duct and finally sent into the dust bag along the negative pressure channel 6.

[0041] The two groups of clean air ducts of this device are connected to the same negative pressure channel 6, and the two groups of clean air ducts are independent of each other through sealing, and the front filter 803 and the rear filter 802 of the filter assembly are cleaned separately, which can effectively prevent secondary contamination between them during the cleaning process.

[0042] Through this device, the operator can achieve the effect of efficiently cleaning the filter without touching the dirty parts of the filter component. It has novel functions and is very convenient. The cleaning air inlet direction is opposite to the air inlet direction when the filter is working, which effectively improves the cleaning effect.

[0043] like Figure 4-Figure 5 As shown, baffles 301 are provided at the front and rear ends of the base 3, and a buffer cavity is formed between the rear filter 802, the base 3 and the two baffles 301, and the buffer cavity is connected with the inner cavity through the rear filter 802; a rear filter air duct 401 is provided on the outside of the cabin body 1, and the two ends of the rear filter air duct 401 are respectively connected with the buffer cavity and the negative pressure channel 6, that is, the rear filter cleaning air duct includes the inner cavity, the buffer cavity and the rear filter air duct 401 connected in sequence.

[0044] As mentioned above, the negative pressure channel 6 and the rear filter air duct 401 are both arranged at the bottom of the outer side of the cabin body 1, and the rear filter air duct 401 is connected to the negative pressure channel 6 through the central channel 402, and the rear filter air duct 401 is connected to the buffer chamber through the through hole 302; the through hole 302 is opened on the left and right sides of the base 3, and the central channel 402 is used to quickly connect the negative pressure channel 6 and the rear filter air duct 401.

[0045] Under the traction of the suction force generated by the negative pressure channel 6, the outside air first enters the inner cavity, and then passes through the rear filter 802 to enter the buffer cavity. During this process, the dust and dirt attached to the rear filter 802 are blown back, and then the air carrying dust and dirt passes through the through hole 302 into the rear filter duct 401, and is finally sent into the dust bag for collection along the central channel 402 and the negative pressure channel 6.

[0046] Furthermore, positioning grooves 303 for positioning the filter assembly are provided on the left and right sides of the base 3, and the positioning grooves 303 are located on the outside of the through hole 302; the lower end of the bracket 801 of the filter assembly has a protrusion that can be embedded in the positioning groove 303 to ensure its accurate position in the inner cavity. At this time, the front filter 803 is located on the outside of the baffle 301, and sealing rings are provided in the baffle 301 and the positioning groove 303 to achieve sealing between the inside and outside of the buffer cavity.

[0047] A plurality of holes are provided on the circumferential surface of the bracket 801 so that air can pass through smoothly.

[0048] like Figure 4-Figure 6 As shown, when the filter assembly is installed on the base 3 of the inner cavity, the front filter 803 is located on the outside of the front baffle 301, and a front cavity is formed between the front filter 803 and the baffle 301; a side air duct 501 connected to the bottom side of the inner cavity is opened, and the side air duct 501 is also connected to the front cavity; the front filter air duct 503 is arranged at the front end of the cabin body 1, and one end thereof is connected to the front cavity through the front filter 803, and the other end is connected to the negative pressure channel 6; that is, the front filter cleaning air duct includes the side air duct 501, the front cavity and the front filter air duct 503 connected in sequence.

[0049] Under the traction of the suction force generated by the negative pressure channel 6, the clean air in the inner cavity enters the side air duct 501 at the bottom from both sides, enters the front cavity along the side air duct 501, passes through the front filter 803 from the inside to the outside and enters the front filter air duct 503. In this process, the airflow blows away the dust and dirt attached to the front filter 803 in the opposite direction, and then the air with dust and dirt enters the front filter air duct 503, and is finally sent into the dust bag for collection along the negative pressure channel 6.

[0050] Example 2

[0051] In actual working conditions, the pollution degree of the front filter 803 is much greater than that of the rear filter 802. Therefore, based on the first embodiment, the present invention further proposes a cleaning mechanism for assisting negative pressure suction cleaning.

[0052] like Figures 1-6 As shown, a shell 502 is provided at the front end of the cabin 1, and an installation cavity connected to the inner cavity is opened inside the shell 502, and a cleaning mechanism for cleaning the front filter 803 is provided on the shell 502. A part of the cleaning mechanism is located in the installation cavity for cleaning the front filter 803, and the other part is located outside the installation cavity to play a driving role.

[0053] As described above, the cleaning mechanism includes a cleaning brush head 701 rotatably mounted in the mounting cavity, the cleaning brush head 701 abuts against the front filter 803 , and a driving assembly for driving the cleaning brush head 701 to rotate is provided on the outer side of the housing 502 .

[0054] Among them, the installation cavity is connected with the inner cavity, and the front filter duct 503 is connected with the front cavity through the front filter 803. Because the front filter 803 is in the inner cavity, the installation cavity is connected with the front cavity through the front filter 803 and the front filter duct 503, that is, the installation cavity is part of the front filter cleaning duct.

[0055] Driven by the driving assembly, the cleaning brush head 701 rotates and sweeps repeatedly to remove dust particles and other dirt on the front filter 803; at the same time, the negative pressure suction force generated by the negative pressure channel 6 sends it and the dirt blown away in the reverse direction into the dust bag for collection.

[0056] This mechanism can be used to assist negative pressure suction for cleaning. The brush on the cleaning brush head 701 rotates and sweeps repeatedly to separate the dirt firmly adsorbed on the front filter 803, effectively improving the cleaning effect of the device.

[0057] Furthermore, the driving assembly includes a driving motor 705, a rotating shaft 702 and a synchronous belt 706. The driving motor 705 is fixedly installed on the outside of the cabin 1, and the output end of the driving motor 705 is installed with a driving wheel 704; the rotating shaft 702 is rotatably passed through the shell 502, one end of the rotating shaft 702 is connected to the cleaning brush head 701, and the other end is installed with a driven wheel 703, and the driven wheel 703 and the driving wheel 704 are connected by a synchronous belt 706.

[0058] The driving assembly adopts a belt drive structure, that is, the torque of the driving motor 705 is transmitted to the rotating shaft 702 through the belt drive structure composed of the driving wheel 704, the driven wheel 703 and the synchronous belt 706, and then the cleaning brush head 701 is driven to rotate through the rotating shaft 702; wherein, the rotating shaft 702 is coaxial with the front filter 803.

[0059] Working principle:

[0060] The negative pressure channel 6 generates suction, and clean air from the outside first enters the inner cavity, then passes through the rear filter 802 and enters the buffer cavity. During this process, the dust and dirt attached to the rear filter 802 are blown away in the opposite direction. The air carrying dust and dirt then passes through the through hole 302 and enters the rear filter duct 401, and is finally sent to the dust bag for collection along the intermediate channel 402 and the negative pressure channel 6.

[0061] When the cleaning brush head 701 cleans the dirt attached to the surface of the front filter 803, the negative pressure channel 6 generates suction, and the clean air in the inner cavity enters the side air duct 501 at the bottom from both sides, enters the front cavity along the side air duct 501, passes through the front filter 803 from the inside to the outside and enters the installation cavity. In this process, the airflow blows the dust and dirt attached to the front filter 803 in the opposite direction, and enters the front filter duct 503 together with the dirt cleaned by the cleaning brush head 701, and is finally sent into the dust bag for collection along the negative pressure channel 6 (the white arrows in the figure represent clean air, and the black arrows represent air with dust and dirt).

[0062] To sum up, when using this device, the cover 2 is opened and the integrated filter assembly is installed in the inner cavity, so that the filter assembly can be self-cleaned; the front filter 803 and the rear filter 802 can be respectively reversely blown and cleaned through the independent front filter cleaning air duct and the rear filter cleaning air duct, and the cleaning effect of the front filter 803 can be improved through the cleaning mechanism; the device achieves the function of cleaning the vacuum cleaner filter assembly by adding negative pressure suction through the cleaning brush head 701. The operator can complete the effect of efficiently cleaning the filter without touching the dirty parts of the filter assembly. It has novel functions and is very convenient.

[0063] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0064] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0065] The above description is based on the ideal embodiment of the present invention. Based on the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A self-cleaning device for a vacuum cleaner filter assembly, characterized in that: The invention comprises a cabin (1), wherein an inner cavity is provided inside the cabin (1), a base (3) for mounting the filter assembly is provided in the inner cavity, and a negative pressure channel (6) capable of generating negative pressure is provided on the outer side of the cabin (1); A mutually independent front filter clean air duct and a rear filter clean air duct are formed between the cabin (1) and the filter assembly, both of which are connected to the negative pressure channel (6), and the rear filter clean air duct passes through the rear filter (802), and the front filter clean air duct passes through the front filter (803).

2. The self-cleaning device of the vacuum cleaner filter assembly according to claim 1, characterized in that: The post-filter cleaning air duct comprises an inner cavity, a buffer cavity and a post-filter air duct (401) which are connected in sequence; baffles (301) are provided at both the front and rear ends of the base (3); the buffer cavity is enclosed and formed between the baffles (301), the post-filter (802) and the base (3), and the buffer cavity is connected to the inner cavity through the post-filter (802); The rear filter air duct (401) is arranged outside the cabin (1), and two ends of the rear filter air duct (401) are respectively in communication with the buffer chamber and the negative pressure channel (6).

3. The self-cleaning device of the vacuum cleaner filter assembly according to claim 2, characterized in that: Through holes (302) are provided on both the left and right sides of the base (3), and the buffer cavity and the rear filter air duct (401) are communicated through the through holes (302).

4. The self-cleaning device of the vacuum cleaner filter assembly according to claim 3, characterized in that: Positioning grooves (303) for positioning the filter assembly are also provided on the left and right sides of the base (3); the positioning grooves (303) are located outside the through hole (302); and the filter air duct (401) is connected to the negative pressure channel (6) via a central channel (402).

5. The self-cleaning device of the vacuum cleaner filter assembly according to claim 2, characterized in that: The front filter cleaning air duct comprises a side air duct (501), a front end cavity and a front filter air duct (503) which are connected in sequence; the side air duct (501) is opened at the bottom of the inner cavity and is connected thereto, the front end cavity is enclosed and formed between the baffle (301) and the front filter (803), and one end of the front filter air duct (503) is connected to the front end cavity through the front filter (803), and the other end is connected to the negative pressure channel (6).

6. The self-cleaning device of the vacuum cleaner filter assembly according to claim 1, characterized in that: A shell (502) is provided at the front end of the cabin (1), an installation cavity communicating with the inner cavity is provided inside the shell (502), and a cleaning mechanism for cleaning the front filter (803) is provided on the shell (502).

7. The self-cleaning device of the vacuum cleaner filter assembly according to claim 6, characterized in that: The cleaning mechanism comprises a cleaning brush head (701) rotatably mounted in the mounting cavity, the cleaning brush head (701) abutting against the front filter (803), and a driving assembly for driving the cleaning brush head (701) to rotate is provided on the outside of the housing (502).

8. The self-cleaning device of the vacuum cleaner filter assembly according to claim 7, characterized in that: The driving assembly comprises a driving motor (705), a rotating shaft (702) and a synchronous belt (706); the driving motor (705) is fixedly mounted on the outside of the cabin (1), and a driving wheel (704) is mounted on the output end of the driving motor (705); The rotating shaft (702) is rotatably mounted on the housing (502), one end of the rotating shaft (702) is connected to the cleaning brush head (701), and the other end is provided with a driven wheel (703), and the driven wheel (703) is connected to the driving wheel (704) via the synchronous belt (706).

9. The self-cleaning device of a vacuum cleaner filter assembly according to any one of claims 1 to 8, characterized in that: A cover plate (2) capable of being flipped open and closed in the longitudinal direction is installed on the top of the cabin body (1); the rear end of the cover plate (2) is rotatably connected to the top of the cabin body (1), and a groove (201) is also provided on the cover plate (2).

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