Invention Grant
- Patent Title: Electric apparatus
- Patent Title (中): 电器
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Application No.: US12362955Application Date: 2009-01-30
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Publication No.: US08388141B2Publication Date: 2013-03-05
- Inventor: Junichi Tanaka
- Applicant: Junichi Tanaka
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon USA Inc IP Division
- Priority: JP2008-027707 20080207
- Main IPC: G03B21/18
- IPC: G03B21/18

Abstract:
An electric apparatus includes a centrifugal fan that includes an impeller in a casing, and is configured to draw air when the impeller rotates in the casing, and to have a blowoff channel of the air from the impeller in the casing, which spreads in a rotating direction of the impeller, and a first cooled part and a second cooled part that has a necessary cooling air capacity larger than that of the first cooled part, the first cooled part and the second cooled part being cooled by the air drawn by the centrifugal fan, wherein a drawing surface of the centrifugal fan has a first drawing area and a second drawing area that has a drawing speed higher than that of the first drawing area when the impeller rotates.
Public/Granted literature
- US20090200001A1 ELECTRIC APPARATUS Public/Granted day:2009-08-13
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