Dust collection assembly of vacuum cleaner

• US 20060137304A1
• Filed: 09/23/2005
• Published: 06/29/2006
• Est. Priority Date: 12/29/2004
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Young Ho, Hwang, Man Tae, Park, Min, Jeong, Hoi Kil, Hwang, Jung Bae
• Granted Patent: US 7,488,362 B2
• Time in Patent Office: Days
• US Class Current: 55/337
• CPC Class Codes: A47L 9/1625 for series flow
• CPC Class Codes: A47L 9/1641 for parallel flow
• CPC Class Codes: A47L 9/1683 Dust collecting chambers; Dust collecting receptacles
• CPC Class Codes: B01D 50/20 Combinations of devices covered by groups B01D45/00 and B01D46/00
• CPC Class Codes: B04C 5/12 Construction of the overflow ducting, e.g. diffusing or spiral exits
• CPC Class Codes: B04C 5/185 Dust collectors
• CPC Class Codes: B04C 5/24 Multiple arrangement thereof combination types according to other /00 groups, B04C7/00
• CPC Class Codes: Y10S 55/03 Vacuum cleaner

Abstract

A dust collection assembly of a vacuum cleaner is provided. The dust collection assembly includes a dust collecting box, a filter, a flow guide unit, an exhaust guider, and an upper cover. The dust collecting box and the flow guide unit are integrally formed in a single body. The dust collecting box includes a first and second dust collecting spaces for collecting foreign objects. The filter is disposed in the inside of the dust collecting space to primarily filter foreign objects during operation of a cyclone. The flow guide unit guides airflow and has small cyclones integrally formed therein, for secondarily filtering the foreign objects in air. The exhaust guider guides airflow and has a plurality of discharge holes through which air filtered by the small cyclone flows. The upper cover is disposed on the upper side of the exhaust guider.

Claims

1. A dust collection assembly of a vacuum cleaner comprising:

a dust collecting box having a first dust collecting space and a second dust collecting space for collecting foreign objects therein;

a filter disposed in an inside of the first dust collecting space, for primarily filtering foreign objects during cyclone airflow in the first dust collecting space;

a flow guide unit disposed on an upper side of the dust collecting box, for guiding airflow between the dust collecting spaces and having small cyclones integrally formed therein, for secondarily filtering foreign objects contained in air;

an exhaust guider spaced a predetermined distance to an upward direction of the flow guide unit, for guiding the airflow exhausted from the dust collecting box, the exhaust guider having a plurality of discharge holes through which the air filtered by the small cyclones; and

an upper cover disposed on the exhaust guider, the dust collecting box and the flow guide unit being formed as a single body.

2. The dust collection assembly according to claim 1, wherein the dust collecting box and the flow guide unit are manufactured by an injection molding.

3. The dust collection assembly according to claim 1, wherein the small cyclone comprises:

a cylindrical part formed to vertically pass through the flow guide unit; and

a conical part extending downward from a lower end of the cylindrical part.

4. The dust collection assembly according to claim 1, wherein the flow guide unit has an inlet pipe protruded downward, for guiding upward air that has passed through the filter.

5. The dust collection assembly according to claim 1, wherein the flow guide unit has a flow guide protruded thereon, for guiding air guided to an upper side of the flow guide unit to one direction.

6. The dust collection assembly according to claim 1, further comprising a partition wall for partitioning the dust collecting space into the first and second dust collecting spaces.

7. The dust collection assembly according to claim 6, wherein the partition wall makes the first dust collecting space circular.

8. The dust collection assembly according to claim 1, wherein the exhaust guider has discharge guide pipes formed therebelow and extending to an inner space of the small cyclones.

9. A dust collection assembly of a vacuum cleaner comprising:

a dust collecting box having a plurality of partitioned dust collecting spaces for storing foreign objects filtered by cyclone airflow;

a flow guide unit disposed on an upper end of the dust collecting box, for guiding airflow between the dust collecting spaces and formed integrally with the dust collecting box;

an exhaust guider spaced a predetermined interval above the flow guide unit, for guiding foreign object-free air discharged from the flow guide unit; and

an upper cover for covering an upper side of the exhaust guider.

10. A dust collection assembly of a vacuum cleaner comprising:

a dust collecting box having a first dust collecting space for storing relatively large foreign objects and a second dust collecting space for storing small foreign objects, each of the dust collecting spaces being partitioned;

a flow guide unit disposed on an upper end of the dust collecting box, for guiding airflow between the dust collecting spaces and formed integrally with the dust collecting box as one body;

a plurality of small cyclones extending from a lower surface of the flow guide unit to the second dust collecting space;

an exhaust guider spaced a predetermined interval above the flow guide unit and constituting a predetermined space for airflow together with the flow guide unit, the exhausting guider having holes for guiding foreign object-free air discharged from the flow guide unit; and

an upper cover formed on an upper side of the exhaust guider.

11. The dust collection assembly according to claim 10, further comprising a filter detachably fixed on an upper side of the first duct collecting space.

12. The dust collection assembly according to claim 10, wherein the first and second dust collecting spaces are partitioned left and right.

13. The dust collection assembly according to claim 10, wherein the small cyclones gather to each other on one side of the first dust collecting space.

14. The dust collection assembly according to claim 10, wherein an upper end of the small cyclone contacts a lower surface of the exhaust guider.

15. The dust collection assembly according to claim 10, wherein the small cyclone has an open end facing the first dust collecting space.

16. The dust collection assembly according to claim 10, wherein the dust collecting spaces are partitioned so that a cross-section of the first dust collecting space is circular.

17. The dust collection assembly according to claim 10, wherein the small cyclones are integrally formed with the flow guide unit.

18. The dust collection assembly according to claim 10, wherein the exhaust guider has discharge guide pipes formed therebelow and extending to an inner space of the small cyclones.

19. The dust collection assembly according to claim 10, wherein the discharge guide pipes are integrally formed with the exhaust guider.

20. The dust collection assembly according to claim 10, wherein the dust collecting box and the flow guide unit are integrally formed by an injection molding.