CN112244687A

CN112244687A - Vacuum cleaner with pre-filter assembly

Info

Publication number: CN112244687A
Application number: CN202011023468.4A
Authority: CN
Inventors: 刘福建
Original assignee: Suzhou Kabite Intelligent Technology Co ltd
Current assignee: Suzhou Kabite Intelligent Technology Co ltd
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2021-01-22

Abstract

The invention discloses a dust collector with a pre-filter assembly, which comprises a machine body with a motor, a dust cup which is connected with the machine body and internally performs cyclone dust collection, a dust cup bottom cover which is arranged at the bottom of the dust cup and can be opened in a rotating way, and the pre-filter assembly which is arranged in the dust cup, is used for filtering dust and is positioned at the upstream of the motor, wherein the pre-filter assembly comprises a first filter used for coarse filtration and a second filter which is arranged in the first filter and is used for fine filtration, and the first filter or the second filter is cleaned manually. The invention has the advantages that the surface of the filter screen can be cleaned by the cleaning brush, the dust blockage is reduced, the filtering performance of the filter screen is improved, and the motor is prevented from being blocked.

Description

Vacuum cleaner with pre-filter assembly

Technical Field

The present invention relates to a vacuum cleaner having a pre-filter assembly.

Background

The dust collector on the market at present usually comprises a cyclone dust cup, a filter screen arranged in the cyclone dust cup and used for filtering dusty airflow, a motor located at the downstream of the filter screen and a rear filter component located at the downstream of the motor, and because the working environment where the filter screen is located is very bad, dust is easy to block meshes in the filter screen, and the filtering performance of the filter screen is affected.

Disclosure of Invention

The invention aims to: the utility model provides a dust catcher with prefilter subassembly, the accessible cleaning brush is cleared up the surface of filter screen, reduces the dust and blocks up, improves the filtering quality of filter screen, prevents that the motor from stifled commentaries on classics.

The first technical scheme of the invention is as follows: a vacuum cleaner having a pre-filter assembly includes a body having a motor, a dust cup connected to the body and cyclone-dusting inside, a bottom cover rotatably opened at a bottom of the dust cup, a pre-filter assembly disposed in the dust cup and disposed upstream of the motor for filtering dust, wherein the pre-filter assembly includes a first filter for coarse filtering, and a second filter disposed in the first filter and for fine filtering, and the first filter or the second filter is manually cleaned.

On the basis of the technical scheme, the method further comprises the following subsidiary technical scheme:

the first filter comprises a filter frame with a first filter cavity, a filter screen fixed on the outer side of the filter frame, a filter flanging arranged at the bottom of the filter frame and extending outwards, and a first filter cylinder wall arranged at the bottom of the filter frame and extending downwards, wherein the first filter cavity extends to the inside of the first filter cylinder wall.

The second filter includes that second filter barrel, detachably cover establish filter on the second filter barrel, be connected and can be by the filter end cover that the user drawed with second filter barrel bottom and set up respectively at a pair of sealing washer that filters the piece both ends.

The second filter cartridge is provided with a number of through holes or grids at the surface and allowing the passage of an air flow, an upper end opening downstream of the through holes or grids.

The filter end cover is provided with a handle, the sealing ring is sleeved on the filter end cover and seals between the filter piece and the filter end cover, or sleeved on the second filter cylinder and seals between the second filter cylinder and the filter piece.

The motor is positioned above the upper end opening and communicated with the upper end opening.

The single through hole or grid has a larger aeration area than the single screen hole.

The second technical scheme of the invention is as follows: a vacuum cleaner having a pre-filter assembly includes a body having a motor, a dust cup connected to the body and cyclone-dusting inside, a bottom cover of the dust cup rotatably opened and disposed at a bottom of the dust cup, a pre-filter assembly disposed in the dust cup for dust filtration and located upstream of the motor, wherein the pre-filter assembly includes a first filter for coarse filtration and a second filter disposed in the first filter for fine filtration, and the first filter is manually cleaned in a circumferential direction and the second filter is manually cleaned in a central axis direction of the dust cup.

The third technical scheme of the invention is as follows: a vacuum cleaner having a pre-filter assembly includes a body having a motor, a dust cup connected to the body and cyclone-dusting inside, a bottom cover rotatably opened at a bottom of the dust cup, a pre-filter assembly disposed in the dust cup for dust filtration and located upstream of the motor, wherein the pre-filter assembly includes a first filter for coarse filtration and a second filter disposed in the first filter for fine filtration, and the second filter and the first filter are selectively rotatably fixed, and the first filter is manually cleaned in a circumferential direction and the second filter is manually cleaned in a central axis direction of the dust cup.

The invention has the advantages that: the accessible cleaning brush clears up the surface of filter screen, reduces the dust and blocks up, improves the filtering quality of filter screen, prevents that the motor from stifled commentaries on classics.

Drawings

The invention is further described with reference to the following figures and examples:

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is another cross-sectional view of the dirt cup bottom cover of the present invention shown open;

FIG. 3 is an exploded view of the filter assembly of the present invention;

FIG. 4 is a top view of the dirt cup of the present invention;

fig. 5 is a perspective assembly view of the present invention.

Detailed Description

Example (b): as shown in fig. 1 to 5, the present invention discloses an embodiment of a vacuum cleaner having a pre-filter assembly, which includes a body 100 having a motor 400, a dirt cup 200 connected to the body 100 and cyclone-dusting the inside, a dirt cup bottom cover 220 rotatably opened and disposed at the bottom of the dirt cup 200, a pre-filter assembly 300 disposed in the dirt cup 200 and disposed upstream of the motor 400 for dust filtration, wherein the pre-filter assembly 300 includes a first filter 3100 for coarse filtration, and a second filter 3200 disposed in the first filter 3100 and for fine filtration, and the first filter 3100 or the second filter 3200 is manually cleaned.

The body 100 includes a motor body 110, a filter body 120 connected to the motor body 110, a battery pack body 130 positioned below the filter body 120, and a handle 140 connecting the filter body 120 and the battery pack body 130, wherein the motor body 110 is used to accommodate a motor 400, is positioned above the dirt cup, and is connected to each other.

The dirt cup 200 is for cyclonic dust removal and includes a cyclone chamber, an air inlet duct 210 tangentially connected to the cyclone chamber. The dirt cup 200 is injection molded from a transparent plastic. When the cleaner is horizontally placed on a plane, the central axis of the dirt cup 200 is perpendicular to the plane.

The first filter 3100 includes a filter frame 3102 having a first filter cavity 3107, a filter mesh 3104 fixed outside the filter frame 3102, a filter flange 3106 provided at the bottom of the filter frame 3102 and extending outward, a first filter cylinder wall 3108 provided at the bottom of the filter frame 3102 and extending downward, and a pair of elastic protrusions 3109 provided inside the first filter cylinder wall 3108 and disposed opposite to each other, wherein the filter mesh 3104 is a metal mesh or a plastic mesh and has a plurality of filter mesh holes. The first filter cavity 3107 extends into the first filter cylinder wall 3108 and houses a resilient protrusion 3109. The cleaning brush 3110 is located outside the first filter 3100 and includes a wool or leather strip for cleaning the mesh of the screen 3104. The first filter 3100 may be rotated in a circular manner as a whole manually or automatically, and the cleaning brush 3110 cleans the surfaces of the filter holes of the filter mesh 3104, i.e., cleans dust, paper slips, hair, etc., in the vicinity of the filter holes. Similarly, the first filter 3100 may be fixed, and the filter holes of the first filter 3100 may be cleaned by manually rotating the bottom of the cleaning brush 3110.

The present embodiment further includes a second filter 3200 disposed in the first filter 3100, and the first filter 3100 and the second filter 3200 together form the pre-filter assembly 300.

The second filter 3200 includes a second filter cylinder 3210 received by the first filter cavity 3107, a filter member 3220 detachably fitted over the second filter cylinder 3210, a filter end cap 3230 connected to a bottom end of the second filter cylinder 3210 and capable of being extracted by a user, and a pair of sealing rings 3240 respectively disposed at two ends of the filter member 3220. The filter element 3220 is preferably a high performance sponge or hypa. The second filter 3200 moves along the central axis of the dirt cup 200 in parallel with the central direction of the cyclone dust collection. The second filter cartridge 3210 is provided with a number of through holes or grills in the surface that allow airflow therethrough, a hollow cartridge cavity, and an upper end opening downstream of the cartridge cavity. The filter end cap 3230 is provided with a handle 3232, and the sealing ring 3240 is disposed on the filter end cap 3230 and seals between the filter element 3220 and the filter end cap 3230, or disposed on the second filter cylinder 3210 and seals between the second filter cylinder 3210 and the filter element 3220. The aeration area of a single through hole or grid is greater than the aeration area of a single screen hole. The second filter 3200 can be drawn out from the top to be cleaned, and when the second filter goes down, the second filter is interfered with the elastic protrusions 3109, i.e., dusting, thereby removing fine dust attached to the filter 3220. The motor 400 is positioned above the opening at the upper end of the second filter cylinder 3210 and is in communication therewith. Preferably, second filter 3200 is rotationally fixed with first filter 3100, for example, by rotating clockwise by an angle smaller than 90 degrees, and then both are synchronously rotated clockwise after fixation, and when detachment is required, the second filter 3200 is rotated counterclockwise, so that cleaning of first filter 3100 and dusting of second filter 3200 can be completed only by rotating second filter 3200 and vertically moving down.

The motor 400 is preferably a brushless dc motor, and is disposed in the motor body 110 above the dust cup 200, and the motor axis is collinear with or intersects the central axis of the dust cup 200 at an acute angle.

The extension direction of the post-filter 500 is parallel to that of the air inlet pipe 210, and a high-performance sponge or a sea handkerchief is adopted to perform final filtering on the air flow of the motor rear outlet air so as to ensure that the clean air flow is discharged to the atmosphere.

The battery pack 600 and the battery pack body 130 are connected to each other, and may be at least partially covered by the battery pack body 130. The battery pack 600 has a lithium battery or a nickel-metal hydride battery cell.

During normal operation, the dusty airflow enters the dust cup 200 through the air inlet pipe 210 and forms a downward cyclone, large garbage can be collected at the bottom of the periphery of the dust cup 200, then the dusty airflow moves upwards to enter the filter elements 3220 of the second filter 3200 through the filter mesh holes for secondary filtration, then the fine airflow passes through the through holes or the grids of the second filter cylinder 3210, then enters the hollow cylinder cavity, enters the motor 400 from bottom to top through the upper end opening, and then is finally filtered by the post-filter 500 and discharged to the atmosphere.

When the pre-filter assembly 300 needs to be cleaned, the dust cup bottom cover 220 at the bottom of the dust cup 200 is rotated to open, the second filter 3200 is moved along the central axis of the dust cup and away from the motor 400 by pinching the handle 3232 with hand, i.e. from top to bottom, and during the movement, the elastic protrusions 3109 are in interference fit with the surface of the second filter 3200, so that dust is brushed, floating dust accumulated on the filter elements 3220 is cleaned, and the second filter 3200 is filtered again. In order to clean the surface of the first filter 3100 from dust or dirt, the bottom of the first filter 3100 may also be rotated manually or automatically, with the cleaning brush 3110 on the top and outside of the first filter 3100, during which rotation the cleaning brush 3110 cleans the mesh surface in the mesh 3104. Similarly, the object of the present invention can be achieved by selectively fixing the first filter 3100 and the second filter 3200 and combining both operations.

Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vacuum cleaner having a pre-filter assembly, comprising: the dust collector comprises a machine body (100) with a motor (400), a dust cup (200) which is connected with the machine body (100) and internally performs cyclone dust collection, a dust cup bottom cover (220) which is arranged at the bottom of the dust cup (200) and can be rotatably opened, and a pre-filter assembly (300) which is arranged in the dust cup (200) and is used for dust filtration and is positioned at the upstream of the motor (400), wherein the pre-filter assembly (300) comprises a first filter (3100) used for coarse filtration and a second filter (3200) which is arranged in the first filter (3100) and is used for fine filtration, and the first filter (3100) or the second filter (3200) is manually cleaned.

2. The vacuum cleaner of claim 1, wherein: the first filter (3100) includes a filter frame (3102) having a first filter cavity (3107), a screen (3104) fixed to an outer side of the filter frame (3102), a filter flange (3106) provided at a bottom of the filter frame (3102) and extending outward, and a first filter cylinder wall (3108) provided at a bottom of the filter frame (3102) and extending downward, wherein the first filter cavity (3107) extends to an inside of the first filter cylinder wall (3108).

3. The vacuum cleaner of claim 2, wherein: the second filter (3200) comprises a second filter cylinder body (3210), a filter piece (3220) detachably sleeved on the second filter cylinder body (3210), a filter end cover (3230) connected with the bottom end of the second filter cylinder body (3210) and capable of being extracted by a user, and a pair of sealing rings (3240) respectively arranged at two ends of the filter piece (3220).

4. A vacuum cleaner according to claim 3, wherein: the second filter cylinder (3210) is provided with a number of through-holes or grids at the surface and allowing airflow therethrough, an upper end opening downstream of the through-holes or grids.

5. A vacuum cleaner according to claim 3, wherein: the filter end cover (3230) is provided with a handle (3232), and the sealing ring (3240) is sleeved on the filter end cover 3230 and seals between the filter element (3220) and the filter end cover (3230), or sleeved on the second filter cylinder (3210) and seals between the second filter cylinder (3210) and the filter element (3220).

6. A vacuum cleaner as claimed in claim 5, wherein: the motor (400) is positioned above the upper end opening and communicated with the upper end opening.

7. A vacuum cleaner as claimed in claim 4, wherein: the single through hole or grid has a larger aeration area than the single screen hole.

8. A vacuum cleaner having a pre-filter assembly, comprising: the dust collector comprises a machine body (100) with a motor (400), a dust cup (200) which is connected with the machine body (100) and internally performs cyclone dust collection, a dust cup bottom cover (220) which is arranged at the bottom of the dust cup (200) and can be opened rotatably, a pre-filter assembly (300) which is arranged in the dust cup (200) and is used for dust filtration and is positioned at the upstream of the motor (400), wherein the pre-filter assembly (300) comprises a first filter (3100) used for coarse filtration and a second filter (3200) which is arranged in the first filter (3100) and is used for fine filtration, and the first filter (3100) is manually cleaned in the circumferential direction, and the second filter (3200) is manually cleaned in the central axis direction of the dust cup.

9. A vacuum cleaner having a pre-filter assembly, comprising: the dust collector comprises a machine body (100) with a motor (400), a dust cup (200) connected with the machine body (100) and internally performing cyclone dust collection, a dust cup bottom cover (220) which is arranged at the bottom of the dust cup (200) and can be opened rotatably, a pre-filter assembly (300) which is arranged in the dust cup (200) and is used for dust filtration and is positioned at the upstream of the motor (400), wherein the pre-filter assembly (300) comprises a first filter (3100) used for coarse filtration and a second filter (3200) which is arranged in the first filter (3100) and is used for fine filtration, the second filter (3200) and the first filter (3100) are selectively and rotatably fixed, the first filter (3100) is manually cleaned in the circumferential direction, and the second filter (3200) is manually cleaned in the central axis direction of the dust cup.