Circumferential arc segment motor cooling fan

H - Electricity – 02 – K

Patent

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Details

H02K 9/00 (2006.01) F04D 25/06 (2006.01) H02K 1/12 (2006.01) H02K 1/22 (2006.01) H02K 7/14 (2006.01) H02K 21/12 (2006.01) H02K 41/03 (2006.01)

Patent

CA 2415877

A cooling fan (10) according to the present invention includes a housing (18). A fan assembly (12) includes a plurality of fan blades carrying a rotor ring (15) at the outer circumference of the fan assembly (12). A plurality of stator elements (20, 21) are supported by the housing (18) to confront the rotor ring (15) around only a portion of the outer circumference of the fan assembly (12). A motor controller (22) is operatively connected to the stator elements (20, 21) to induce force on the rotor ring (15) to turn the fan assembly (12).

La présente invention concerne un ventilateur (10) venant dans un logement (18). Un système de ventilation (12) comprend une pluralité de pales portant un anneau de rotor (15) situé au niveau de la circonférence extérieure du système de ventilation (12). Une pluralité d'éléments statoriques (20, 21) sont supportés par le logement (18) de manière à faire face à l'anneau de rotor (15) seulement au niveau d'une portion de la circonférence extérieure du système de ventilation (12). Une commande moteur (22), reliée fonctionnellement aux éléments statoriques (20, 21), applique une force sur l'anneau de rotor (15) pour faire tourner ledit système de ventilation (12).

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