IP Library Granted Patent US 7,645,309
Granted Patent B2
US 7,645,309 · App. 11/233,004 · Granted Jan 12, 2010

Dust collection unit and vacuum cleaner with the same

Assignee: LG Electronics Inc.
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Quick Facts
Patent No.
US 7,645,309
App. No.
11/233,004
Granted
Jan 12, 2010
Kind
B2
Abstract

A dust collection unit for a vacuum cleaner includes a first filtering chamber filtering foreign objects using a cyclone airflow, a separation plate defining a top surface of the first filtering chamber, a filter having a diameter that is reduced as it goes downward in response to airflow rate variation in the first filtering chamber, and a blocking member provided under the filter to prevent the foreign objects filtered in the first filtering chamber from flying.

Claims (53)

1. A dust collection unit for a vacuum cleaner, comprising:

a first filtering chamber filtering foreign objects using a cyclone airflow;

a separation plate defining a top surface of the first filtering chamber;

a filter disposed in the first filtering chamber; and

a blocking member detachably mounted under the filter to prevent the foreign objects filtered in the first filtering chamber from flying,

wherein the filter is provided at a lower end portion with an insertion portion that can be at least partly inserted into the blocking member.

2. The dust collection unit according to claim 1 , wherein the diameter of the blocking member increases in a direction extending away from the filter.

3. The dust collection unit according to claim 1 , wherein the filter is coupled to the separation plate to be capable of separating from the separation plate.

4. The dust collection unit according to claim 1 , wherein a lower end of the filter is formed to define an acute point.

5. The dust collection unit according to claim 1 , wherein the filter is provided throughout its entire body with apertures.

6. The dust collection unit according to claim 1 , wherein the filter is formed in a cone shape.

7. The dust collection unit according to claim 1 , wherein the separation plate is provided with a communication hole through which air passed through the filter flows.

8. The dust collection unit according to claim 1 , wherein the filter is designed to be separable from the separation plate.

9. The dust collection unit according to claim 1 , further comprising:

an insertion groove formed on the blocking member to correspond to the insertion portion; and

a second projection formed on the insertion groove to interlock with the insertion portion.

10. The dust collection unit according to claim 1 , further comprising an airflow preventing plate integrally formed on a bottom of the blocking member.

11. The vacuum cleaner according to claim 10 , wherein the filter is formed in a cone shape.

12. A vacuum cleaner comprising:

a base;

a dust collection unit disposed on a front portion of the base;

a motor disposed on a rear portion of the base; and

a cover disposed above the base,

wherein the dust collection unit comprises:

a first filtering chamber;

a plurality of second filtering chambers formed on an outer circumference of the first filtering chamber;

storing chambers formed under the first and second filtering chambers;

a filter detachably mounted on a center portion of the first filtering chamber, the filter being formed of a rigid plastic material;

a blocking member detachably mounted on the filter; and

a plurality of airflow preventing plates disposed in a radial direction and integrally formed with a bottom surface of the blocking member.

13. The vacuum cleaner according to claim 12 , wherein an upper end of the filter is hooked on a top surface of the first filtering chamber.

14. The vacuum cleaner according to claim 12 , wherein the blocking member has a circular horizontal section and the filter is fixed in a state where at least a portion of the filter is inserted in the blocking member.

15. The vacuum cleaner according to claim 12 , wherein the filter, the blocking member and the airflow preventing member are aligned in a vertical direction.

16. The vacuum cleaner according to claim 12 , wherein the filter is provided throughout its entire body with apertures.

17. A vacuum cleaner comprising:

a base;

a dust collection unit disposed on a front portion of the base;

a motor disposed on a rear portion of the base;

a cover disposed above the base; and

wherein the dust collection unit comprises:

a filtering chamber,

a filter detachably mounted on a center portion of the first filtering chamber, the filter being formed of a rigid plastic material;

a blocking member detachably mounted on the filter; and

a plurality of airflow preventing plates disposed in a radial direction and integrally formed with a bottom surface of the blocking member.

18. A vacuum cleaner comprising:

a motor generating sucking force;

a dust collection unit filtering foreign objects contained in air introduced by the sucking force generated by the motor; and

a suction assembly guiding outer air to the dust collection unit, wherein the dust collection unit comprises:

a first filtering chamber formed on a center portion of the dust collection unit and having a relatively large diameter;

a plurality of second filtering chambers formed on an outer circumference of the first filtering chamber;

a cone-shaped filter mounted on a center portion of the first filtering chamber;

a blocking member detachably mounted on the cone-shaped filter to prevent the foreign objects from flying; and

an airflow preventing plate integrally formed with the blocking member to stop the cyclone airflow.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 23, 2005
From: JEONG, HOI KIL; HWANG, MAN TAE; KIM, YOUNG HO; HWANG, JUNG BAE; PARK, MIN
To: LG ELECTRONICS, INC.
Reel/Frame 017030/0269 →
Priority Claims (2)
KR 10-2004-0113370 · Dec 27, 2004 · national
KR 10-2004-0113378 · Dec 27, 2004 · national
Continuity (1)
Related Publication 20060137309A1 · Jun 29, 2006