Dust collector for vacuum cleaner

Patent metadata

Field	Value
Publication number	US-2018271343-A1
Application number	US-201615542463-A
Country	US
Kind code	A1
Filing date	Jan 13, 2016
Priority date	Jan 14, 2015
Publication date	Sep 27, 2018
Grant date	—

Abstract

The present disclosure discloses a dust collector for a vacuum cleaner, including a first cyclone disposed within an outer case to filter out dust from air introduced from an outside thereof and introduce the air from which dust has been filtered out to an inside thereof, a second cyclone accommodated in the inside of the first cyclone to separate fine dust from the air introduced to the inside of the first cyclone, a first guide vane spirally extended from an annular shaped first space between the first and the second cyclone to induce rotational flow so as to introduce air introduced into the first space to an inlet of the second cyclone, and a second guide vane spirally extended along an inner circumference of the inlet to enhance the rotational flow of air introduced to an inside of the second cyclone through the inlet.

First claim

1 . A dust collector for a vacuum cleaner, comprising:
a first cyclone disposed within an outer case to filter out dust from air introduced from an outside thereof and introduce the air from which dust has been filtered out to an inside thereof; a second cyclone accommodated in the inside of the first cyclone to separate fine dust from the air introduced to the inside of the first cyclone; a first guide vane spirally extended from an annular shaped first space between the first and the second cyclone to induce rotational flow so as to introduce air introduced into the first space to an inlet of the second cyclone; and a second guide vane spirally extended along an inner circumference of the inlet to enhance the rotational flow of air introduced to an inside of the second cyclone through the inlet.

2 . The dust collector for a vacuum cleaner of claim 1 , wherein a plurality of the first guide vanes are provided, and disposed to be spaced from each other at predetermined intervals along an inner circumference of the first cyclone or an outer circumference of the second cyclone.

3 . The dust collector for a vacuum cleaner of claim 2 , wherein an entrance extended toward an inner circumference of the outer case is formed at an upper portion of the outer case to rotate air introduced from an outside in one direction, and
the first guide vane is formed in an inclined manner upward along the one direction to rotate and move air introduced into the first space upward in the one direction.

4 . The dust collector for a vacuum cleaner of claim 3 , wherein the first guide vane is formed to be protruded from an outer circumference of the second cyclone toward an inner circumference of the first cyclone.

5 . The dust collector for a vacuum cleaner of claim 3 , wherein the second guide vane is formed in an inclined manner downward along the one direction to allow the air rotated and moved upward in the one direction along the first guide vane to be rotated and moved downward in the one direction and introduced to an inside of the second cyclone.

6 . The dust collector for a vacuum cleaner of claim 1 , wherein a vortex finder is provided at the center of the second cyclone to discharge air from which fine dust is separated, and
the second guide vane is installed on the inlet which is a space between the vortex finder and an inner circumference of the second cyclone.

7 . The dust collector for a vacuum cleaner of claim 6 , wherein a plurality of second guide vanes are provided, and disposed to be spaced from each other at predetermined intervals along an outer circumference of the vortex finder.

8 . The dust collector for a vacuum cleaner of claim 6 , wherein a plurality of ribs extended toward a radial direction are provided at an inside of the vortex finder to mitigate the rotational flow of discharged air.

9 . The dust collector for a vacuum cleaner of claim 1 , wherein the first cyclone comprises:
a housing formed to accommodate the second cyclone therein, and provided with an opening portion communicating with an inside on an outer circumference thereof; and a mesh filter installed to cover the opening portion to filter out and separate the dust from the air.

10 . The dust collector for a vacuum cleaner of claim 9 , wherein an outlet of the second cyclone is installed to pass through a bottom surface of the housing, and
an inner case is installed at a lower portion of the housing to allow the inner case to accommodate the outlet so as to collect fine dust discharged through the outlet into a fine dust storage unit within the inner case.

11 . The dust collector for a vacuum cleaner of claim 10 , wherein dust filtered out through the mesh filter is collected into a dust storage unit between an inner circumference of the outer case and an outer circumference of the inner case, and further comprising:
a lower cover hinge-coupled to the outer case to form a bottom surface of the outer case and the inner case during the closing, and discharge dust collected in the dust storage unit and fine dust collected in the fine dust storage unit at the same time during the opening.

12 . The dust collector for a vacuum cleaner of claim 11 , wherein a plurality of ribs for dust collection are formed in a protruding manner on an inner circumference of the outer case to collect the dust introduced into the dust storage unit.

Assignees

• Lg Electronics Inc

Inventors

• Hyun Kietak
• Lee Seungyeop
• Ahn Hyukjin

Classifications

• A47L9/1658

  Construction of outlets · CPC title

• A47L9/1683 Primary

  Dust collecting chambers; Dust collecting receptacles · CPC title

• A47L9/1608

  Cyclonic chamber constructions · CPC title

• A47L9/1633 Primary

  Concentric cyclones · CPC title

• A47L9/1666

  with filtering means · CPC title