Pumps – Motor driven – Electric or magnetic motor
Patent
1997-08-08
1999-10-19
Freay, Charles G.
Pumps
Motor driven
Electric or magnetic motor
417368, 417370, 416169A, F04B 3504
Patent
active
059677643
ABSTRACT:
A fan and electric motor combination (or a fan adapted to be used in such a combination) which provides improved cooling for the motor, using a centrifugal impeller including rotating impeller blades. The impeller blades span between an impeller inlet and an impeller outlet, and they rotate to assist cooling airflow for the motor. Cooling airflow is also assisted by the position of the impeller in that the impeller outlet is positioned upstream of an intersection of the fan blade trailing edge and the hub. Therefore, cooling airflow is assisted by at least some (preferably all) of the pressure drop across the axial fan. If the impeller outlet is positioned still further upstream, e.g., upstream of an intersection of the fan blade leading edge and the hub, then the motor cooling airflow is assisted by all or nearly all of the pressure drop across the axial fan.
REFERENCES:
patent: 2294586 (1942-09-01), Troller
patent: 2661146 (1953-12-01), Hill et al.
patent: 2819675 (1958-01-01), Gilman
patent: 3731121 (1973-05-01), Cook et al.
patent: 4092556 (1978-05-01), Mabuchi
patent: 4153389 (1979-05-01), Boyd
patent: 4659951 (1987-04-01), Angi et al.
patent: 4883982 (1989-11-01), Forbes et al.
patent: 5180279 (1993-01-01), McLane-Goetz et al.
patent: 5217353 (1993-06-01), De Filippis
patent: 5283493 (1994-02-01), Hokanson et al.
patent: 5645401 (1997-07-01), Martin et al.
Booth Jeff D.
Van Houten Robert J.
Bosch Automotive Systems Corporation
Freay Charles G.
LandOfFree
Axial fan with self-cooled 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 Axial fan with self-cooled motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Axial fan with self-cooled motor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2047771