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CN-224206730-U - Dust collector with low noise

CN224206730UCN 224206730 UCN224206730 UCN 224206730UCN-224206730-U

Abstract

The utility model discloses a low-noise dust collector, which comprises a shell and a fan assembly, wherein the shell is provided with a closed cavity, the front end wall of the closed cavity is provided with an air inlet structure, the rear end wall of the closed cavity is provided with a separation grid plate, the closed cavity is internally provided with a fan cavity positioned at the front part and a transition cavity positioned at the rear part, a plurality of separation holes are densely distributed on the separation grid plate, and the fan assembly is fixedly arranged in the fan cavity. The air flow exhausted by the fan assembly sequentially passes through the isolation holes of the separation grid plate, the transition cavity and the air outlet holes of the rear end wall, so that the air flow flows in a shrinking-expanding-shrinking mode to be exhausted, and the sound noise is greatly reduced.

Inventors

  • ZHOU XIAOLIN
  • ZHENG LIHANG

Assignees

  • 宁波洁匠智能科技有限公司

Dates

Publication Date
20260508
Application Date
20250411

Claims (10)

  1. 1. The utility model provides a dust catcher of low noise, its characterized in that includes casing and fan subassembly, the casing structure is provided with the airtight cavity that the front end wall has the air inlet structure and the back end wall has a plurality of apopores, be provided with the separation grid tray in the airtight cavity in order to separate it into the fan chamber that is located the front portion and be located the transition chamber at rear portion, the dense a plurality of isolation holes that have on the separation grid tray, the fan subassembly is adorned admittedly in the fan chamber.
  2. 2. The low noise vacuum cleaner of claim 1, wherein the wall thickness of the rear end wall of the closed cavity is greater than or equal to 2.5mm; and/or the thickness of the separation grid plate is more than or equal to 2.5mm.
  3. 3. A low noise vacuum cleaner according to claim 1 or 2, wherein the flow area of the air outlet in the rear end wall of the closed cavity is no more than 19.6mm 2 ; And/or the flow area of the isolation hole is less than or equal to 19.6mm 2 .
  4. 4. The low noise cleaner of claim 1, wherein the housing comprises an upper shell and a lower shell which are combined to form a closed cavity, the front end of the upper shell is provided with an upper arc opening, and the middle of the inner surface of the upper shell is provided with an upper separation rib; the front end of the lower shell is provided with a lower arc opening which is matched with the upper arc opening to form a mounting opening, and the middle part of the inner surface of the lower shell is provided with a lower partition rib which is matched with the upper partition rib to form a partition grid plate.
  5. 5. The low noise cleaner of claim 4, wherein the fan assembly includes a fan housing, and a motor mounted within the fan housing, the motor having a first sound damping cotton disposed about an exterior thereof; and/or the fan shell is provided with second silencing cotton at the position corresponding to the air outlet.
  6. 6. The low noise cleaner of claim 5, wherein the blower housing includes a front housing and a rear housing fixedly connected, the front housing including a retainer ring abutting against an inner wall of the mounting opening, and an air intake plate disposed on a front surface of the retainer ring and extending into the mounting opening, the air intake plate being provided with an air intake structure; The fixed lugs are arranged on two opposite sides of the rear surface of the retainer ring, the upper fixing column and the lower fixing column are respectively arranged on the inner surface of the upper shell and the inner surface of the lower shell corresponding to the fixed lugs, and the upper fixing column and the lower fixing column are matched to clamp the fixed lugs and fix the fixed lugs through screws.
  7. 7. The low noise cleaner of claim 6, wherein the rear housing is configured with a first cavity having an open front end and a second cavity having an open rear end and positioned outside the first cavity, a communication port being provided between the first and second cavities, and the second sound damping cotton being inserted into the second cavity.
  8. 8. The low noise cleaner of claim 4, wherein upper restraint ribs are disposed on opposite sides of the upper shell corresponding to the rear of the upper partition ribs, and third silencing cotton is restrained between the upper restraint ribs; the lower shell is provided with lower restraint ribs corresponding to two sides behind the lower separation ribs, and fourth silencing cotton is restrained between the lower restraint ribs.
  9. 9. The low noise vacuum cleaner of claim 4, further comprising a dust cup, wherein the dust suction pipe is connected above the upper housing, the rear end of the dust suction pipe is closed, the dust cup extends forward axially, the dust cup is fixedly connected below the dust suction pipe, the dust cup is communicated with the dust suction pipe, and an opening of the dust cup is in butt joint with the front end of the closed cavity.
  10. 10. The low noise vacuum cleaner of claim 1, wherein the rear end wall of the closed cavity has a beveled structure for directing the airflow to blow obliquely downward.

Description

Dust collector with low noise Technical Field The utility model relates to the technical field of dust collector equipment, in particular to a dust collector with low noise. Background The dust collector uses the motor to drive the fan to rotate at high speed, so that partial vacuum is formed in the dust collection chamber, air pressure difference is formed between the dust collection chamber and the dust collection chamber to generate air flow, dust is sucked into the dust collection chamber along with the air flow, and is filtered to leave the dust in the dust collection chamber to discharge clean air, however, the existing fan is arranged in a fan cavity of the dust collector, and the air flow discharged by the discharged fan is directly discharged by an air outlet hole on the fan cavity, so that the form of air outlet noise is larger, and the dust collector has room for improvement. Disclosure of utility model The utility model aims to overcome the defects in the prior art, and provides a low-noise dust collector, which is structured so that air flow discharged by a fan assembly sequentially passes through an isolation hole of a separation grid plate, a transition cavity and an air outlet hole of a rear end wall, so that the air flow flows out in a shrinking-enlarging-shrinking mode, and the noise is greatly reduced. In order to achieve the above purpose, the utility model provides a low noise dust collector, comprising a shell and a fan assembly, wherein the shell is provided with a closed cavity with an air inlet structure on the front end wall and a plurality of air outlet holes on the rear end wall, a separation grid plate is arranged in the closed cavity to separate the closed cavity into a fan cavity positioned at the front part and a transition cavity positioned at the rear part, a plurality of isolation holes are densely distributed on the separation grid plate, and the fan assembly is fixedly arranged in the fan cavity. The wall thickness of the rear end wall of the closed cavity is more than or equal to 2.5mm; and/or the thickness of the separation grid plate is more than or equal to 2.5mm. The flow area of the air outlet hole on the rear end wall of the closed cavity is less than or equal to 19.6mm 2; And/or the flow area of the isolation hole is less than or equal to 19.6mm 2. The shell comprises an upper shell and a lower shell which are combined to form a closed cavity, wherein the front end of the upper shell is provided with an upper arc opening, and the middle part of the inner surface of the upper shell is provided with an upper separation rib; the front end of the lower shell is provided with a lower arc opening which is matched with the upper arc opening to form a mounting opening, and the middle part of the inner surface of the lower shell is provided with a lower partition rib which is matched with the upper partition rib to form a partition grid plate. The fan assembly comprises a fan shell and a motor arranged in the fan shell, wherein first silencing cotton is wrapped outside the motor. And/or the fan shell is provided with second silencing cotton at the position corresponding to the air outlet. The fan shell comprises a front cover body and a rear cover body which are fixedly connected, wherein the front cover body comprises a retainer ring which is propped against the inner wall of the mounting opening, and an air inlet plate which is arranged on the front surface of the retainer ring and extends into the mounting opening, and an air inlet structure is arranged on the air inlet plate; The fixed lugs are arranged on two opposite sides of the rear surface of the retainer ring, the upper fixing column and the lower fixing column are respectively arranged on the inner surface of the upper shell and the inner surface of the lower shell corresponding to the fixed lugs, and the upper fixing column and the lower fixing column are matched to clamp the fixed lugs and fix the fixed lugs through screws. The novel silencer is characterized in that the rear cover body is provided with a first cavity with an open front end and a second cavity with an open rear end, the second cavity is positioned outside the first cavity, a communication port is arranged between the first cavity and the second cavity, and the second silencing cotton is inserted into the second cavity. The upper shell is provided with upper constraint ribs on two sides corresponding to the rear of the upper separation ribs, and third silencing cotton is constrained between the upper constraint ribs; the lower shell is provided with lower restraint ribs corresponding to two sides behind the lower separation ribs, and fourth silencing cotton is restrained between the lower restraint ribs. The dust collection device is characterized by further comprising a dust cup, wherein a dust collection pipe with a closed rear end and extending forwards axially is connected to the upper side of the upper shell, the dust cup is fixedly conne