Dust collector for vacuum cleaner

Patent metadata

Field	Value
Publication number	US-9808134-B2
Application number	US-201514642179-A
Country	US
Kind code	B2
Filing date	Mar 9, 2015
Priority date	Sep 29, 2014
Publication date	Nov 7, 2017
Grant date	Nov 7, 2017

Abstract

A dust collector for a vacuum cleaner disclosed herein includes a first cyclone to primarily separate dust from air introduced from a lower portion thereof with containing foreign materials and discharge the separated dust into the first dust storing unit, a second cyclone extending in an intersecting direction with an extending direction of the first cyclone and configured to secondarily separate fine dust from the air introduced from the first cyclone and discharge the separated fine dust into a second dust storing unit, and a lower cover defining a bottom surface of the first dust storing unit, the second dust storing unit and the first cyclone and coupled to the first dust storing unit by a hinge such that the foreign materials collected in the first dust storing unit, the second dust storing unit and the first cyclone are discharged upon being open.

First claim

What is claimed is:

1. A dust collector for a vacuum cleaner, the dust collector comprising:
a first dust storing unit;
a first cyclone provided in the first dust storing unit, the first cyclone being configured to separate dust from air introduced into the first cyclone from a lower portion of the first cyclone and discharge the separated dust into the first dust storing unit;
a second dust storing unit;
a second cyclone provided above the first cyclone to extend in an intersecting direction with an extending direction of the first cyclone, the second cyclone being configured to separate fine dust from the air introduced into the second cyclone from the first cyclone and discharge the separated fine dust into the second dust storing unit;
a lower cover defining a bottom surface of the first dust storing unit, the second dust storing unit and the first cyclone;-and
a hinge coupling the lower cover to the first dust storing unit, the hinge permitting the lower cover to be opened to discharge dust collected in the first dust storing unit, the second dust storing unit and the first cyclone; and
a compression plate provided in the first dust storing unit the compression plate being rotatable in at least one direction about a central shaft to compress dust in the first dust storing unit to secure space so that more dust may be collected,
wherein the first cyclone is disposed eccentrically from the central shaft so as not to interfere with rotational motion of the compression plate, and
wherein the lower cover has an introduction opening formed therein through the bottom surface of the first cyclone to permit dust to be introduced into the first cyclone through the introduction opening.

2. The dust collector of claim 1 , wherein the first cyclone comprises a mesh filter configured to separate the dust from the air in a filtering manner.

3. The dust collector of claim 2 , wherein an upper portion of the mesh filter is connected to an inlet of the second cyclone such that air that has passed through the mesh filter is introduced into the second cyclone.

4. The dust collector of claim 2 , wherein the mesh filter has a conic shape that becomes narrower from a top of the mesh filter to a bottom of the mesh filter, such that the dust filtered by the mesh filter and stuck on the mesh filter is separated from the mesh filter upon being open.

5. The dust collector of claim 4 , wherein the mesh filter is provided in the first cyclone and extends substantially in a same direction as the extending direction of the first cyclone.

6. The dust collector of claim 1 , wherein the second dust storing unit is provided in the first dust storing unit.

7. The dust collector of claim 1 , wherein the second dust storing unit comprises a guide surface that is inclined to guide fine dust separated from the air by the second cyclone into the second dust storing unit.

8. The dust collector of claim 6 , wherein the second dust storing unit extends substantially in a same direction as an extending direction of the first dust storing unit.

9. The dust collector of claim 8 , wherein the second dust storing unit has a cylindrical shape that contacts an outer circumferential surface of the first cyclone and an inner circumferential surface of the first dust storing unit.

10. The dust collector of claim 8 , wherein the second dust storing unit comprises two second dust storing units that each contact an outer circumferential surface of the first cyclone and an inner circumferential surface of the first dust storing unit.

11. The dust collector of claim 1 , wherein the second cyclone comprises a plurality of second cyclones extending in parallel with one another.

12. The dust collector of claim 11 , wherein the plurality of second cyclones are stacked into plural layers.

13. The dust collector of claim 1 , wherein the second dust storing unit is provided in the first dust storing unit,
wherein the second dust storing unit comprises a guide surface that is inclined to guide fine dust separated from the air by the second cyclone into the second dust storing unit,
wherein the second dust storing unit extends substantially in a same direction as an extending direction of the first dust storing unit, and
wherein the second cyclone comprises a plurality of second cyclones extending in parallel with one another.

14. The dust collector of claim 1 , wherein an extending direction of the second cyclone is orthogonal to the extending direction of the first cyclone.

15. A vacuum cleaner, comprising:
a main body configured to produce a suction force;
a suction part configured to suck air containing dust; and
a dust collector configured to separate the dust from the air introduced from the suction part and discharge the separated dust, wherein the dust collector comprises:
a first dust storing unit;
a first cyclone provided in the first dust storing unit, the first cyclone being configured to separate dust from air introduced into the first cyclone from a lower portion of the first cyclone and discharge the separated dust into the first dust storing unit;
a second dust storing unit;
a second cyclone provided above the first cyclone to extend in an intersecting direction with an extending direction of the first cyclone, the second cyclone being configured to separate fine dust from the air introduced into the second cyclone from the first cyclone and discharge the separated fine dust into the second dust storing unit;
a lower cover defining a bottom surface of the first dust storing unit, the second dust storing unit and the first cyclone;
a hinge coupling the lower cover to the first dust storing unit, the hinge permitting the lower cover to be opened to discharge dust collected in the first dust storing unit, the second dust storing unit and the first cyclone; and
a compression plate provided in the first dust storing unit the compression plate being rotatable in at least one direction about a central shaft to compress dust in the first dust storing unit to secure space so that more dust may be collected,
wherein the first cyclone is disposed eccentrically from the central shaft so as not to interfere with rotational motion of the compression plate, and
wherein the lower cover has an introduction opening formed therein through the bottom surface of the first cyclone to permit dust to be introduced into the first cyclone through the introduction opening.

16. The vacuum cleaner of claim 15 , wherein the second dust storing unit is provided in the first dust storing unit.

17. The vacuum cleaner of claim 16 , wherein the second dust storing unit has a cylindrical shape that contacts an outer circumferential surface of the first cyclone and an inner circumferential surface of the first dust storing unit.

18. The vacuum cleaner of claim 15 , wherein the second cyclone comprises a plurality of second cyclones extending in parallel with one another.

19. The vacuum cleaner of claim 18 , wherein the second dust storing unit is provided in the first dust storing unit,
wherein the second dust storing unit comprises a guide surface that is inclined to guide fine dust separated from the air by the second cyclone into the second dust storing unit, and
wherein the second dust storing unit extends substantially in a same direction as an extending direction of the first dust storing unit.

20. The vacuum cleaner of claim 15 , wherein an extending direction of the second cyclone is orthogonal to the extending direction of the first cyclone.

Assignees

• Lg Electronics Inc

Inventors

• Hyun Kietak
• Lee Seungyeop
• Ahn Hyukjin

Classifications

• B01D45/16

  generated by the winding course of the gas stream {, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes} · CPC title

• B01D50/002

  Operations & Transport · mapped topic

• A47L9/1666

  with filtering means · CPC title

• A47L9/1625 Primary

  for series flow · CPC title

• A47L9/1641 Primary

  for parallel flow · CPC title