Centrifugal fan

Details Centrifugal fan Centrifugal fan

2011-07-12

2011-07-12

Kramer, Devon C (Department: 3746)

Pumps

Motor driven

Electric or magnetic motor

C417S423100, C417S423140

Reexamination Certificate

active

07976293

ABSTRACT:
A centrifugal fan includes an impeller having a plurality of blades around a predetermined central axis, a motor that rotatably drives the impeller, a control circuit that controls the rotation of the motor, and a casing that houses the impeller, the motor, and at least a portion of the control circuit. A plurality of electronic components of the control circuit are disposed in an electronic component mounting portion provided between a circumferential wall of the casing and a virtually extending plane of an opening end surface of an exhaust port along a direction substantially perpendicular to the central axis. In the centrifugal fan, the electronic components are disposed radially outside an air passage, and thus the centrifugal fan can be reduced in its axial size, so that downsizing of the fan can be achieved.

REFERENCES:
patent: 4164690 (1979-08-01), Muller et al.
patent: 5979541 (1999-11-01), Saito
patent: 6400053 (2002-06-01), Horng
patent: 07-046811 (1995-02-01), None
patent: 2001-135964 (2001-05-01), None
patent: 2001-241395 (2001-09-01), None
patent: 2002-291194 (2002-10-01), None
patent: 2005-083244 (2005-03-01), None
patent: 2005-291157 (2005-10-01), None

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