Fan assembly having an air directing member to cool a motor

Details Fan assembly having an air directing member to cool a motor Fan assembly having an air directing member to cool a motor

1997-11-25

1999-08-31

Freay, Charles G.

Pumps

Motor driven

Electric or magnetic motor

417368, F04B 1703

Patent

active

059444975

ABSTRACT:
A motor driven fan assembly is disclosed wherein a hub has a plurality of fan blades which extend radially outwardly therefrom and is fixed to an air cooled brushless motor for rotation, such that when the hub is rotatably driven by the motor, the fan blades create an atmospheric pressure differential defined by a higher pressure region downstream of the blades and a lower pressure region upstream of the blades. The hub has an opening dimensioned and located to communicate with cooling air openings in the motor. A cooling air directing plate is positioned axially upstream of the hub to define an air directing space with the motor and the hub, and the space communicates the lower pressure region with the higher pressure region through a cooling air path in the motor and the hub opening to cool the motor. A method of cooling such fan driving motor of the brushless type is also disclosed.

REFERENCES:
patent: Re34268 (1993-06-01), Muller
patent: Re34456 (1993-11-01), Harmsen et al.
patent: 3906266 (1975-09-01), Cowman
patent: 3961864 (1976-06-01), Papst et al.
patent: 4399379 (1983-08-01), Marks et al.
patent: 4554491 (1985-11-01), Plunkett
patent: 4563622 (1986-01-01), Deavers et al.
patent: 4682065 (1987-07-01), English et al.
patent: 4686400 (1987-08-01), Fujisaki et al.
patent: 4698542 (1987-10-01), Muller
patent: 4838760 (1989-06-01), Brackett
patent: 4992029 (1991-02-01), Harmsen et al.
patent: 5188508 (1993-02-01), Scott et al.
patent: 5217353 (1993-06-01), De Filippis
patent: 5654598 (1997-08-01), Horski
patent: 5818133 (1998-10-01), Kershaw et al.

Affiliated with

Also associated with

Rating

Fan assembly having an air directing member to cool a motor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fan assembly having an air directing member to cool a motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fan assembly having an air directing member to cool a motor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2424515