CN116035466A - A handheld vacuum cleaner - Google Patents

Abstract

The invention relates to a handheld dust collector, which comprises a dust collector main body, a dust cup and a filter component, wherein the dust cup is connected to the dust collector main body, a suction inlet knot is arranged on the dust cup, the filter component comprises a filter element and an annular separator, the filter element is connected to the dust collector main body and is positioned in the dust cup, the annular separator is sleeved outside the filter element, an airflow channel is formed between the dust cup and the annular separator, the airflow channel is communicated with the suction inlet knot, the annular separator is provided with a plurality of channels which are communicated with the airflow channel and the filter element, an inlet of the channel is positioned at one side of the airflow channel, an outlet of the channel is positioned at one side of the filter element, and an included angle between the extending direction of the channel from the inlet to the outlet of the channel and the flowing direction of airflow in the airflow channel is an obtuse angle. The invention slows down the dust adhesion rate of the outer surface of the filter element, realizes good protection of the filter element, prolongs the service life of the filter element, ensures the filtering effect, and has simple integral structure, convenient installation and lower cost.

Description

A handheld vacuum cleaner

technical field

The invention belongs to the technical field of vacuum cleaners, and in particular relates to a hand-held vacuum cleaner.

Background technique

A vacuum cleaner is a commonly used cleaning device, which can generate negative air pressure to suck dust or foreign matter accumulated on the floor, carpet, wall, or other object surfaces into its garbage collection device. Vacuum cleaners can be divided into vertical, horizontal and hand-held according to their structure. Hand-held vacuum cleaners are widely used due to their small size, light weight, and convenient use. Common hand-held vacuum cleaners include a body, a dust collection cup, and a filter element. The body is equipped with a vacuum cleaner motor, and the dust collection cup is connected to the There is a dust suction port on the body and the dust cup, and the filter element is set in the dust cup. When the hand-held vacuum cleaner is working, the vacuum cleaner motor on the fuselage generates negative pressure in the dust collection cup, thereby generating suction to suck dust or foreign matter through the suction port, and filter through the filter element, which can remove larger particles of dust and The foreign matter is separated from the air and collected into the dust cup, and then the filtered air is discharged through the exhaust grille set on the machine body.

However, after a period of use of the handheld vacuum cleaner, a large amount of dust usually adheres to the outer surface of the filter element, resulting in a decrease in the suction of the vacuum cleaner and a reduction in the filtering effect of the filter element. At this time, the filter element needs to be disassembled for cleaning or replacement. At present, in order to prolong the service life of the filter element and prevent frequent cleaning or replacement of the filter element, hand-held vacuum cleaners with a filter element cleaning device have also appeared. See the Chinese invention patent whose publication number is CN208573588U, which discloses a dust filter assembly and a vacuum cleaner. The dust filter assembly includes a bracket, a filter screen cover, a scraper and a driving device, and the filter screen cover is rotatably arranged on the bracket. The driving device is used to drive the filter screen cover to rotate. The scraper is arranged on the bracket, and the scraper edge of the scraper is against the outer surface of the filter screen cover to scrape off the dust attached to the filter screen cover when the filter screen cover rotates relatively. . However, the scraper needs to be driven by a driving device when it is working, resulting in a complex internal overall structure of the hand-held vacuum cleaner, which cannot be simply modified on the existing structure, and the cost is high. The driving device will generate noise and the operation is cumbersome.

Contents of the invention

The purpose of the present invention is to provide a hand-held vacuum cleaner, which is used to solve the problems that dust is easy to adhere to the outer surface of the filter element and the structure of the existing cleaning device is complicated.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A hand-held vacuum cleaner, comprising a vacuum cleaner main body, a dust collection cup and a filter assembly, the dust collection cup is connected to the vacuum cleaner main body, and a suction port structure is arranged on the dust collection cup; the filter assembly It includes a filter element, the filter element is connected to the main body of the vacuum cleaner and is located in the dust collection cup, and it is characterized in that: the filter assembly also includes an annular separator, and the annular separator is sleeved on the On the outside of the filter element, an air flow channel is formed between the dust collection cup and the annular separator, the air flow channel communicates with the suction inlet structure, and the annular separator has multiple The airflow channel and the channel of the filter element, the inlet of the channel is located on the side of the air flow channel, the outlet of the channel is located on the side of the filter element, and the passage from the inlet to the outlet of the channel is The included angle between the extension direction and the flow direction of the airflow in the airflow channel is an obtuse angle.

Preferably, the plurality of channels are evenly distributed on the side wall of the annular separator.

Preferably, the annular separator includes a top ring, a bottom ring and a plurality of plates, the plurality of plates are connected between the top ring and the bottom ring, and two adjacent plates The channel is formed between them.

Further preferably, the plate body is arc-shaped, and the plate body is bent away from the flow direction of the airflow in the airflow channel, so as to improve the separation effect of the annular separator on dust particles.

Preferably, the filter element includes a filter holder and a filter screen, the filter screen is arranged on the filter holder, and the annular separator is connected to the filter holder.

Further preferably, the height of the annular separator is not less than the height of the filter screen, so that the annular separator completely covers the filter screen, preventing part of the filter screen from being exposed to the in the airflow channel.

Preferably, the annular separator is detachably connected to the filter element, so that the disassembly of the annular separator is more convenient.

Preferably, the dust cup, the filter element and the annular separator are arranged coaxially.

Preferably, the suction port structure includes an inlet, an outlet, and a suction channel connecting the inlet and the outlet, the airflow channel is in the shape of a ring, and the direction of the outlet is tangent to the airflow channel.

Further preferably, the suction inlet structure further includes two deflectors arranged in the suction passage, the extension direction of the two deflectors is consistent with the direction of the outlet, and the two deflectors The outlet is formed between the deflectors.

Due to the use of the above-mentioned technical solutions, the present invention has the following advantages compared with the prior art:

In the present invention, by setting an annular separator with channels on the outer side of the filter element, the probability that the dust particles in the airflow directly act on the outer surface of the filter element can be reduced, and the dust adhesion rate on the outer surface of the filter element can be slowed down, thereby achieving good protection for the filter element and improving the efficiency of the filter element. The service life of the filter element is extended and the filtering effect is guaranteed. The overall structure of the ring separator is simple and easy to install. It can be directly retrofitted and installed on the existing hand-held vacuum cleaner with low cost.

Description of drawings

Accompanying drawing 1 is the explosion schematic diagram of the handheld vacuum cleaner of the present embodiment;

Accompanying drawing 2 is the schematic front view of the handheld vacuum cleaner of this embodiment;

Accompanying drawing 3 is the schematic sectional view of A-A in accompanying drawing 2;

Accompanying drawing 4 is the partially enlarged schematic diagram of place B in accompanying drawing 3;

Accompanying drawing 5 is the schematic sectional view of C-C in accompanying drawing 3;

Accompanying drawing 6 is the three-dimensional schematic diagram of the annular separator of this embodiment.

In the above drawings: 1. Vacuum cleaner main body; 2. Dust collection cup; 20. Air flow channel; 21. Bottom cover; 3. Filter assembly; 31. Filter element; 311. Filter bracket; 312. Filter screen; 32. Ring separator ; 320, channel; 321, top ring; 322, bottom ring; 323, plate body; 4, suction port structure; 41, inlet; 42, outlet; 43, suction channel;

Detailed ways

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediary, and it can be the internal communication of two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

A hand-held vacuum cleaner, as shown in Figure 1 and Figure 2, includes a vacuum cleaner main body 1, a dust collection cup 2 and a filter assembly 3, the dust collection cup 2 is connected to the vacuum cleaner main body 1, and the dust collection cup 2 is provided with a suction port structure 4. The suction port structure 4 communicates with the inside of the dust collection cup 2, and the filter assembly 3 is arranged in the dust collection cup 2 to filter the dust, foreign matter, etc. in the airflow sucked into the dust collection cup 2 from the suction port structure 4 .

The following is a detailed introduction to each component:

The bottom of one side of the vacuum cleaner main body 1 is provided with a connecting portion, and the top of the dust collecting cup 2 is detachably connected to the connecting portion of the vacuum cleaner main body 1 . The bottom of the dust collection cup 2 is blocked by the bottom cover 21, that is, the bottom cover 21 is detachably connected to the bottom of the dust collection cup 2. Specifically, such as hinge connection, screw connection, etc., can be used. Of course, it is not limited to these two methods. .

The filter assembly 3 is arranged in the dust collection cup 2, and the filter assembly 3 is used to filter the dust, foreign matter, etc. An annular separator 32 , the filter element 31 is connected to the vacuum cleaner main body 1 and located in the dust collection cup 2 , the annular separator 32 is sheathed on the outside of the filter element 31 , so that an airflow channel 20 is formed between the dust collection cup 2 and the annular separator 32 . in particular:

The filter element 31 includes a filter bracket 311 and a filter screen 312. As shown in FIG. 5, the top of the filter bracket 311 is detachably connected to the connection part of the vacuum cleaner main body 1. The filter screen 312 is a core part for filtering dust, foreign matter, etc. in the airflow. The filter screen 312 is sheathed on the filter bracket 311 , and the filter bracket 311 , the filter screen 312 and the dust collection cup 2 are arranged coaxially.

The annular separator 32 is detachably connected to the filter bracket 311, and the annular separator 32 is coaxially arranged with the dust collection cup 2, the filter bracket 311, and the filter screen 312. Specifically, it can be realized by, for example, a buckle connection, a screw connection, etc. Of course, it is not limited to these two connection modes. The height of the annular separator 32 is not less than the height of the filter screen 312, that is, when the annular separator 32 is connected on the filter holder 311, it can completely cover the filter screen 312, preventing the occurrence of partial filter screen 312 directly exposed in the airflow channel 20. Condition. The side wall of the annular separator 32 is provided with a plurality of passages 320, and the plurality of passages 320 are evenly distributed around the circumference of the axis of the annular separator 32. The passage 320 can communicate with the airflow passage 20 and the filter element 31, and the entrance of the passage 320 is located in the airflow passage. 20 side, the outlet of the channel 320 is located on the side of the filter element 31, as shown in Figure 4, the angle α between the extending direction of the channel 320 from its inlet to the outlet and the flow direction of the airflow in the airflow channel 20 is an obtuse angle, so as to realize Effective separation of dust and foreign matter. in particular:

Annular separator 32 comprises top ring 321, bottom ring 322 and plate body 323, as shown in Figure 6, plate body 323 is provided with a plurality of, and the top of multiple plate body 323 is connected with top ring 321, and the top of multiple plate body 323 The bottom is connected to the bottom ring 322; as shown in Figure 4, one side of the plate body 323 faces the filter element 31, and the other side of the plate body 323 faces the airflow channel 20, and a channel 320 is formed between two adjacent plate bodies 323, and a plurality of The plate body 323 is evenly distributed around the circumference of the axis of the annular separator 32, so that the dimensions of the plurality of passages 320 are consistent; Improve the separation effect of the ring separator 32 on the dust particles in the airflow. In this embodiment: because the airflow flows counterclockwise in the airflow channel 20 , the plate body 323 bends clockwise.

The suction port structure 4 communicates with the airflow channel 20 , and the suction port structure 4 is used to suck dust, sundries, etc. into the airflow channel 20 of the dust collecting cup 2 . The suction port structure 4 specifically includes an inlet 41, an outlet 42, and a suction channel 43. The inlet 41 and the outlet 42 are communicated through the suction channel 43, and the outlet 42 is inclined, specifically, the direction of the outlet 42 is in line with the circular airflow channel 20. Tangentially, the airflow directed into the airflow channel 20 may flow clockwise or counterclockwise. Specifically, two deflectors 44 are arranged in the suction channel 43 , and the extension direction of the two deflectors 44 is consistent with the direction of the outlet 42 , and the outlet 42 is formed between the two deflectors 44 . In this embodiment: the two deflectors 44 extend obliquely towards the same side, so that the airflow flows counterclockwise after entering the airflow channel 20 from the outlet 42 .

The working process of the present embodiment is set forth in detail below:

Start the hand-held vacuum cleaner, so that the airflow with dust and debris enters the suction passage 43 from the inlet 41 of the suction inlet structure 4 and enters the airflow passage 20 between the dust collection cup 2 and the annular separator 32 from the outlet 42. When the airflow passage 20 flows, the airflow will be blocked first, and then enter the passage 320 of the annular separator 32. During this process, part of the dust and sundries in the airflow will be directly dropped due to being blocked by the plate body 323. It falls to the bottom of the dust collection cup 2, and then the airflow is filtered through the filter element 31, which can reduce the probability that the dust and sundries in the airflow directly act on the outer surface of the filter screen 312, and slow down the dust adhesion rate on the outer surface of the filter screen 312 , to achieve good protection for the filter element 31, improve the service life of the filter element 31, and ensure the filtering effect.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and not to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention shall fall within the protection scope of the present invention.

Claims (10)

1. The handheld dust collector comprises a dust collector main body (1), a dust collecting cup (2) and a filtering component (3), wherein the dust collecting cup (2) is connected to the dust collector main body (1), and a suction inlet structure (4) is arranged on the dust collecting cup (2); the filter component (3) comprises a filter element (31), wherein the filter element (31) is connected to the dust collector main body (1) and is positioned in the dust collecting cup (2), and the filter component is characterized in that: the filter assembly (3) further comprises an annular separator (32), the annular separator (32) is sleeved outside the filter element (31), an air flow channel (20) is formed between the dust cup (2) and the annular separator (32), the air flow channel (20) is communicated with the suction inlet structure (4), the annular separator (32) is provided with a plurality of channels (320) which are communicated with the air flow channel (20) and the filter element (31), an inlet of the channel (320) is positioned on one side of the air flow channel (20), an outlet of the channel (320) is positioned on one side of the filter element (31), and an included angle between the extending direction of the channel (320) from the inlet to the outlet and the flowing direction of air flow in the air flow channel (20) is an obtuse angle.

2. A hand-held vacuum cleaner as claimed in claim 1, wherein: a plurality of said passages (320) are uniformly distributed on the side wall of said annular separator (32).

3. A hand-held cleaner according to claim 1 or 2, wherein: the annular separator (32) comprises a top ring (321), a bottom ring (322) and a plurality of plate bodies (323), wherein a plurality of plate bodies (323) are connected between the top ring (321) and the bottom ring (322), and a channel (320) is formed between two adjacent plate bodies (323).

4. A hand-held cleaner according to claim 3, wherein: the plate body (323) is arc-shaped, and the plate body (323) is bent towards the flowing direction of the air flow in the air flow channel (20).

5. A hand-held vacuum cleaner as claimed in claim 1, wherein: the filter element (31) comprises a filter support (311) and a filter screen (312), the filter screen (312) is arranged on the filter support (311), and the annular separator (32) is connected to the filter support (311).

6. The hand-held vacuum cleaner of claim 5 wherein: the height of the annular separator (32) is not less than the height of the filter screen (312), so that the annular separator (32) completely covers the filter screen (312).

7. A hand-held cleaner according to claim 1 or 5, wherein: the annular separator (32) is detachably connected with the filter element (31).

8. A hand-held vacuum cleaner as claimed in claim 1, wherein: the dust cup (2), the filter element (31) and the annular separator (32) are coaxially arranged.

9. A hand-held vacuum cleaner as claimed in claim 1, wherein: the suction inlet structure (4) comprises an inlet (41), an outlet (42) and a suction channel (43) communicated with the inlet (41) and the outlet (42), the airflow channel (20) is in a circular ring shape, and the direction of the outlet (42) is tangential to the airflow channel (20).

10. The hand-held vacuum cleaner of claim 9, wherein: the suction inlet structure (4) further comprises two guide plates (44) arranged in the suction channel (43), the extending direction of the two guide plates (44) is consistent with the direction of the outlet (42), and the outlet (42) is formed between the two guide plates (44).

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