Dust collection unit and vacuum cleaner with same

• US 20060137306A1
• Filed: 09/23/2005
• Published: 06/29/2006
• Est. Priority Date: 12/27/2004
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Jeong, Hoi Kil, Hwang, Geun Bae, Kim, Young Jong
• Granted Patent: US 7,556,661 B2
• Time in Patent Office: Days
• US Class Current: 55/337
• CPC Class Codes: A47L 9/0081 Means for exhaust-air diffusion; Means for sound or vibration damping
• CPC Class Codes: A47L 9/1625 for series flow
• CPC Class Codes: A47L 9/1641 for parallel flow
• CPC Class Codes: A47L 9/1658 Construction of outlets
• CPC Class Codes: Y10S 55/03 Vacuum cleaner

Abstract

A dust collection unit for a vacuum cleaner includes a first filtering chamber filtering relatively large foreign objects, a second filtering chamber filtering relatively small foreign objects when air exhausted from the first filtering chamber is introduced into the second filtering chamber, an exhaust member disposed above the filtering chambers to guide airflow, a storing chamber disposed under the filtering chambers to store the foreign objects filtered in the filtering chambers, a sealing member sealing bottoms of the filtering chambers, and a rectifying unit formed on an exhaust side of the second filtering chamber to rectify airflow, thereby reducing noise generated by the airflow.

Claims

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

a first filtering chamber filtering relatively large foreign objects;

a second filtering chamber filtering relatively small foreign objects when air exhausted from the first filtering chamber is introduced into the second filtering chamber;

an exhaust member disposed above the filtering chambers to guide airflow;

a storing chamber disposed under the filtering chambers to store the foreign objects filtered in the filtering chambers;

a sealing member sealing bottoms of the filtering chambers; and

a rectifying unit formed on an exhaust side of the second filtering chamber to rectify airflow, thereby reducing noise generated by the airflow.

2. The dust collection unit according to claim 1, wherein the rectifying unit is formed on an exhaust side air intake hole inserted in the second filtering chamber by a predetermined depth.

3. The dust collection unit according to claim 2, wherein the exhaust side air intake hole extends downward from the exhaust member.

4. The dust collection unit according to claim 2, wherein an outer diameter of the exhaust side air intake hole is less than an inner diameter of the second filtering chamber.

5. The dust collection unit according to claim 1, wherein the rectifying unit has a section having a shape selected from the group consisting of a cross-shape, a linear-shape, a radial-shape, a circular-shape, and a lattice-shape.

6. The dust collection unit according to claim 1, wherein the rectifying unit is integrally formed with the exhaust member.

7. The dust collection unit according to claim 1, wherein the second filtering chamber is provided in plurality disposed around the first filtering chamber.

8. The dust collection unit according to claim 1, further comprising a gap forming member disposed above the exhaust member to guide airflow exhausted through the rectifying unit.

9. The dust collection unit according to claim 1, wherein the rectifying unit extends in an extending direction of the second filtering chamber.

12. The dust collection unit according to claim 1, wherein the rectifying unit has a section having a cross-shape.

20. The dust collection unit according to claim 1, wherein the rectifying unit has an identical section shape extending in an extending direction of the second filtering chamber.

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

a first filtering chamber filtering relatively large foreign objects;

a second filtering chamber filtering relatively small foreign objects when air exhausted from the first filtering chamber is introduced into the second filtering chamber; and

a rectifying unit formed on an exhaust side of the second filtering chamber to rectify airflow, thereby reducing noise generated by the airflow.

11. The dust collection unit according to claim 10, wherein the rectifying unit is formed on an exhaust side air intake hole inserted in the second filtering chamber by a predetermined depth.

13. The dust collection unit according to claim 10, wherein the rectifying unit is integrally formed with an object where it will be installed.

14. The dust collection unit according to claim 10, wherein the second filtering chamber is provided in plurality disposed around the first filtering chamber.

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

a first filtering chamber filtering relatively large foreign objects;

a second filtering chamber filtering relatively small foreign objects when air exhausted from the first filtering chamber is introduced into the second filtering chamber;

an exhaust member disposed above the filtering chambers to guide airflow;

a storing chamber disposed under the filtering chambers to store the foreign objects filtered in the filtering chambers; and

a rectifying unit formed on an exhaust side of the second filtering chamber to rectify airflow, thereby reducing noise generated by the airflow.

16. The dust collection unit according to claim 15, wherein the air whose foreign objects are filtered in the filtering chambers is exhausted upward.

17. The dust collection unit according to claim 15, further comprising a gap forming member disposed above the exhaust member to guide air exhausted through the rectifying unit.

18. The dust collection unit according to claim 15, further comprising an exhaust side air intake hole extending downward from the exhaust member to guide air exhausted from the second filtering unit.

19. The dust collection unit according to claim 18, wherein the rectifying unit is provided in the exhaust side air intake hole.