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CN-116035466-B - Handheld dust collector

CN116035466BCN 116035466 BCN116035466 BCN 116035466BCN-116035466-B

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.

Inventors

  • MA WEIHONG

Assignees

  • 苏州市宏伟电器有限公司

Dates

Publication Date
20260508
Application Date
20221215

Claims (6)

  1. 1. A 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), a suction inlet structure (4) is arranged on the dust collecting cup (2), the filtering component (3) comprises a filter core (31), the filter core (31) is connected to the dust collector main body (1) and is positioned in the dust collecting cup (2), the filter core (31) comprises a filtering bracket (311) and a filter screen (312), the filter screen (312) is arranged on the filtering bracket (311), and is characterized in that the filtering component (3) further comprises an annular separator (32), the annular separator (32) is sleeved outside the filter core (31) and is connected to the filtering bracket (311), an airflow channel (20) is formed between the dust collecting cup (2) and the annular separator (32), the airflow channel (20) is communicated with the suction inlet structure (4), the airflow channels (320) are communicated with the annular separator (32), the inlet of the channel (320) is positioned on one side of the airflow channel (20), the outlet of the channel (320) is positioned on one side of the filter element (31), the extending direction of the channel (320) from the inlet to the outlet of the channel is obtuse angle with the flowing direction of the airflow in the airflow channel (20), the annular separator (32) comprises a top ring (321), a bottom ring (322) and a plurality of plate bodies (323), the plate bodies (323) are connected between the top ring (321) and the bottom ring (322), the channel (320) is formed between two adjacent plate bodies (323), the plate bodies (323) are arc-shaped, and the plate bodies (323) bend towards the flowing direction deviating from the airflow in the airflow channel (20).
  2. 2. The vacuum cleaner according to claim 1, wherein the height of the annular separator (32) is not smaller than the height of the filter screen (312), so that the annular separator (32) completely covers the filter screen (312).
  3. 3. A hand-held vacuum cleaner according to claim 1, wherein the annular separator (32) is detachably connected to the filter insert (31).
  4. 4. A hand-held vacuum cleaner according to claim 1, wherein the dirt cup (2), the filter element (31) and the annular separator (32) are arranged coaxially.
  5. 5. The hand-held vacuum cleaner according to claim 1, wherein the suction inlet structure (4) comprises an inlet (41), an outlet (42) and a suction channel (43) communicating the inlet (41) and the outlet (42), the air flow channel (20) is circular, and the outlet (42) is oriented tangentially to the air flow channel (20).
  6. 6. The vacuum cleaner according to claim 5, wherein the suction inlet structure (4) further comprises two guide plates (44) disposed in the suction passage (43), the two guide plates (44) extending in the same direction as the outlet (42), and the outlet (42) is formed between the two guide plates (44).

Description

Handheld dust collector Technical Field The invention belongs to the technical field of dust collectors, and particularly relates to a handheld dust collector. Background A cleaner is a general cleaning apparatus that can generate negative air pressure to suck dust or foreign matter accumulated on the surface of a floor, a carpet, a wall surface, or other objects into a garbage collection device thereof. The dust collector can be divided into a vertical type, a horizontal type, a handheld type and the like according to the structure. The hand-held dust collector is widely used due to the advantages of small volume, light weight, convenient use and the like, and the common hand-held dust collector comprises a machine body, a dust cup and a filter element, wherein a dust collector motor is arranged in the machine body, the dust cup is connected to the machine body, a dust collection opening is formed in the dust cup, and the filter element is arranged in the dust cup. When the handheld dust collector works, negative pressure is generated in the dust collecting cup through the dust collector motor on the machine body, so that suction force is generated to suck dust or foreign matters through the dust collection opening, the filter element is used for filtering, larger-particle dust and foreign matters can be separated from air and collected in the dust collecting cup, and then the filtered air is discharged through the exhaust grille arranged on the machine body. However, after the handheld dust collector is used for a period of time, a large amount of dust is usually attached to the outer surface of the filter element, so that the suction force of the dust collector is reduced, the filtering effect of the filter element is reduced, and the filter element needs to be disassembled for cleaning or replacement. At present, in order to prolong the service life of the filter element, frequent cleaning or replacement of the filter element is prevented, and a handheld dust collector with a filter element cleaning device is also appeared. Referring to the chinese patent of publication No. CN208573588U, it discloses a dust filtering component and dust collector, the dust filtering component includes a support, a filtering net cover, a scraper blade and a driving device, the filtering net cover is rotatably arranged on the support, the driving device is used for driving the filtering net cover to rotate, the scraper blade is arranged on the support, the scraping blade of the scraper blade is propped against the outer side surface of the filtering net cover for scraping dust attached to the filtering net cover when the filtering net cover rotates relatively. But the scraper blade during operation needs drive arrangement to drive, leads to hand-held type dust catcher's inside overall structure complicated, can't carry out simple transformation to current structure, and the cost is higher, and drive arrangement work can produce the noise, and complex operation. Disclosure of Invention The invention aims to provide a handheld dust collector which is used for solving the problems that dust is easy to adhere to the outer surface of a filter element, the structure of an existing cleaning device is complex and the like. In order to achieve the above purpose, the invention adopts the following technical scheme: A handheld dust collector comprises a dust collector main body, a dust collecting cup and a filter assembly, wherein the dust collecting cup is connected to the dust collector main body, a suction inlet structure is arranged on the dust collecting cup, the filter assembly comprises a filter element, the filter element is connected to the dust collector main body and is positioned in the dust collecting cup, the handheld dust collector is characterized by further comprising an annular separator, the annular separator is sleeved outside the filter element, an air flow channel is formed between the dust collecting cup and the annular separator, the air flow channel is communicated with the suction inlet structure, the annular separator is provided with a plurality of channels which are communicated with the air flow channel and the filter element, an inlet of the channel is positioned on one side of the air flow channel, an outlet of the channel is positioned on one side of the filter element, and an included angle between the extending direction of the channel from the inlet to the outlet and the flowing direction of air flow in the air flow channel is an obtuse angle. Preferably, a plurality of said channels are evenly distributed over the side wall of said annular separator. Preferably, the annular separator comprises a top ring, a bottom ring and a plurality of plate bodies, wherein a plurality of plate bodies are connected between the top ring and the bottom ring, and the channels are formed between two adjacent plate bodies. Further preferably, the plate body is arc-shaped, and the plate body is bent towards the flowin