Heat sink-equipped fan motor and small flat motor

H - Electricity – 02 – K

Patent

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Details

H02K 5/18 (2006.01) F04D 25/06 (2006.01) F04D 29/58 (2006.01)

Patent

CA 2375129

A heat sink-equipped fan motor that is small and flat but superior in heat dissipation or air-cooling effect and that is structurally simple as a whole, easily assembled in thin form and inexpensive. A fan motor (M) comprising a rotor (11) and a stator (12) is mounted on substantially the middle of the plate surface of a base plat (10) adapted to be fixed to various devices requiring heat dissipation. A plurality of thin-sheet-like heat dissipating sheets (17) mutually parallelly stacked with a predetermined clearance therebetween and having an opening (17a) formed in the middle of the plate surface for rotatably receiving the fan motor (M) are used to assemble a heat sink (H) that transfers heat from the base plate (10).

L'invention concerne un moteur de ventilateur équipé d'un dissipateur thermique lequel est petit et plat mais présente un effet supérieur de dissipation thermique et de refroidissement par air et est d'une structure globale simple, assemblé aisément en une forme mince et bon marché. Un moteur (M) de ventilateur comprenant un rotor (11) et un stator (12) est monté sensiblement au milieu de la surface d'une plaque de base (10) adaptée pour être fixée à divers dispositifs nécessitant une dissipation thermique. Une pluralité de plaques (17) de dissipation thermique ayant la forme de plaques minces, empilées parallèlement mutuellement avec un espace prédéterminé entre elles, et présentant une ouverture (17a) formée au milieu de la surface de la plaque destinée à recevoir en rotation le moteur (M) du ventilateur, est utilisée pour assembler un dissipateur thermique (H) transférant la chaleur provenant de la plaque de base (10).

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