Electric vacuum cleaner

• US 7,276,099 B2
• Filed: 02/14/2006
• Issued: 10/02/2007
• Est. Priority Date: 06/11/2002
• Status: Expired due to Fees

• Current Assignee: Hitachi Home & Life Solutions, Inc. (Hitachi, Ltd.)
• Original Assignee: Hitachi Home & Life Solutions, Inc. (Hitachi, Ltd.)
• Inventors: Tanaka, Hirofumi, Kitagawa, Naofumi, Sato, Susumu, Hayashi, Shoji, Kotaka, Yasunori, Suzuki, Naruhiko, Umezawa, Koichi, Hiruta, Yasuyuki, Iwase, Yukiji, Kanno, Kyouichi
• Primary Examiner(s): Hopkins; Robert A.
• Application Number:
  US11/353,143
• Publication Number:
  US 20060123751A1
• Time in Patent Office: 595 Days
• Field of Search: 553/37, 554/28, 554/29, 554/591, 554/82, 55D/IG.3, 153/277, 153/47, 153/50, 153/53
• US Class Current: 55/429
• CPC Class Codes: A47L 5/362 of the horizontal type, e.g. canister or sledge type
• CPC Class Codes: A47L 9/122 flat
• CPC Class Codes: A47L 9/1666 with filtering means
• CPC Class Codes: A47L 9/1683 Dust collecting chambers; Dust collecting receptacles
• CPC Class Codes: A47L 9/22 Mountings for motor fan assemblies
• CPC Class Codes: B04C 2009/002 with external filters
• CPC Class Codes: B04C 9/00 Combinations with other devices, e.g. fans, expansion chambers, diffusors, water lockswith filters B01D50/00
• CPC Class Codes: Y10S 55/03 Vacuum cleaner

Abstract

An object of the present invention is to provide an electric vacuum cleaner equipped with a compact and easy-to-operate cyclonic separation type dust collector.

To accomplish the object, the present invention mounts a cyclonic separation cylinder (104) that centrifugally separates and captures dust and a dust collecting case (105) that contains a first auxiliary filter (106) detachably on the lower case (101) of the cleaner body (1) and part of air from the cyclonic separation cylinder (104) is fed to the motor-driven blower through the dust collecting case (105).

The present invention mounts a cyclonic separation cylinder (104) that centrifugally separates and captures dust and a dust collecting case (105) that contains a first auxiliary filter (106) detachably on the lower case (101) of the cleaner body (1) and part of air from the cyclonic separation cylinder (104) is fed to the motor-driven blower through the dust collecting case (105) and a filter provided under it.

Claims

1. An electric vacuum cleaner having a cyclonic separation cylinder for flowing into dusts containing air sucked from a suction port and for removing the dusts according to a centrifugal separation and a dust collecting case having an opening which communicates with said cyclonic separation cylinder, wherein

a center axial direction of said cyclonic separation cylinder is arranged at a substantial vertical direction,

an inflow inlet to said cyclonic separation cylinder has a position where air flows into a substantial tangential direction and is provided at a lower portion of said cyclonic separation cylinder, and

said opening of said dust collecting case is provided at an upper portion of said cyclonic separation cylinder.

2. An electric vacuum cleaner according to claim 1, wherein

the electric vacuum cleaner comprising further

an inner cylinder provided on said cyclonic separation cylinder and having an exhaust air port, and

said exhaust air port of said inner cylinder is provided at said lower portion of said cyclonic separation cylinder.

3. An electric vacuum cleaner comprising:

an electric vacuum cleaner main body to which an electric driven blower is installed;

a cyclonic separation cylinder provided on said electric vacuum cleaner main body and for flowing dusts containing air sucked from a suction port into an inlet tube and for removing the dusts according to a centrifugal separation; and

a dust collecting case provided on said electric vacuum cleaner main body and having an opening which communicates with said cyclonic separation cylinder, wherein

a center axial direction of said cyclonic separation cylinder is arranged at a substantial vertical direction,

an inflow inlet to said cyclonic separation cylinder has a position where air flows into a substantial tangential direction and is provided at a lower portion of said cyclonic separation cylinder,

said opening of said dust collecting case is provided at an upper portion of said cyclonic separation cylinder, and

a rotation center of said electric driven blower is arranged at a horizontal direction.

4. An electric vacuum cleaner according to claim 3, wherein

said inflow inlet is positioned at a central portion viewing from an upper portion of said electric vacuum cleaner main body,

said cyclonic separation cylinder is arranged to any one side of a right direction and a left direction, and

said electric driven blower is arranged at another side where said cyclonic separation cylinder is arranged.