Vacuum cleaner

• US 7,601,188 B2
• Filed: 03/02/2007
• Issued: 10/13/2009
• Est. Priority Date: 12/10/2005
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Yun, Chang Ho, Hyun, Kie Tak, Ha, Gun Ho, Jeong, Kyeong Seon, Son, Young Bok, Kim, Jae Kyum, Lee, Sung Hwa, Hwang, Man Tae, Yang, Hae Seock, Park, Yun Hee, Kim, Jin Young, Park, Min, Kim, Il Joong, Yoo, Myung Sig, Shin, Jin Hyouk, Choo, Jong Su, Jeong, Hoi Kil, Ko, Moo Hyun, Seo, Jin Wook, Lee, Chang Hoon
• Primary Examiner(s): Hopkins; Robert A
• Application Number:
  US11/713,022
• Publication Number:
  US 20070256272A1
• Time in Patent Office: 956 Days
• Field of Search: 553/43, 553/46, 553/49, 554/29, 554/591, 55D/IG.3, 963/80, 963/82
• US Class Current: 55/343
• CPC Class Codes: A47L 9/0081 Means for exhaust-air diffusion; Means for sound or vibration damping
• CPC Class Codes: A47L 9/108 Dust compression means
• 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: A47L 9/1691 Mounting or coupling means for cyclonic chamber or dust receptacles
• CPC Class Codes: B30B 9/3082 with compression means other than rams performing a rectilinear movement
• CPC Class Codes: Y10S 55/03 Vacuum cleaner

Abstract

A vacuum cleaner includes at least one cyclone dust separation unit. A cover is formed over the cyclone dust separation unit to attenuate noise generated by the cyclone unit. Dimples or recesses may be formed on the interior of the cover to further attenuate noise. In addition, a noise attenuating material may be inserted between the cyclone dust separation unit and the cover.

Claims

1. A vacuum cleaner, comprising:

a main body;

a dust collection device that is removably mounted on the main body;

a main cyclone dust separation device mounted on the dust collection device;

a secondary cyclone dust separation device mounted on the main body, wherein the secondary cyclone dust separation device receives a flow of air that has already passed through the main cyclone dust separation device; and

a cover mounted on the main body that at least partially surrounds the secondary cyclone dust separation device and that is configured to attenuate noise produced by the secondary cyclone dust separation device, wherein the dust collection device is capable of detaching from the main body in a state in which the secondary dust separation device is mounted on the main body.

2. The vacuum cleaner of claim 1, wherein the cover is configured and mounted on the main body such that a separation space is maintained between an exterior surface of the secondary dust separation device and an interior surface of the cover.

3. The vacuum cleaner of claim 2, wherein a sound absorbing material is mounted in the separation space.

4. The vacuum cleaner of claim 2, wherein noise reduction recesses are formed on the interior surface of the cover.

5. The vacuum cleaner of claim 4, wherein the recesses comprise dimples.

6. The vacuum cleaner of claim 4, wherein the recesses comprise grooves.

7. The vacuum cleaner of claim 1, wherein the secondary cyclone dust separation device comprises a plurality of cyclones.

8. The vacuum cleaner of claim 7, wherein the plurality of cyclones of the secondary cyclone dust separation device are arranged in a fan shape.

9. The vacuum cleaner of claim 8, wherein the cover has a shape that substantially matches the fan shape of the plurality of cyclones of the secondary dust separation device.

10. A vacuum cleaner, comprising:

a main body;

a cyclone dust separation device mounted on the main body; and

a cover that at least partially surrounds the cyclone dust separation device, wherein recesses are formed on an interior surface of the cover, and wherein the recesses arc configured to attenuate noise generated by the cyclone dust separation device.