Electronic component cooling apparatus
AssigneeSanyo Denki Co., Ltd.
InventorsNobumasa Kodama, Toshiki Ogawara
Life of this patent
Estimating the term…
Abstract
An electronic component cooling apparatus capable of permitting a heat sink to exhibit satisfactory cooling efficiency and increasing durability of a motor. A plurality of radiation fins are provided on a base of a heat sink in a manner to surround an impeller including blades and fixed on a rotor of a motor. The radiation fins are arranged so as to be in conformity to a direction of flowing of air from the impeller being rotated. The blades each are constructed so as to permit air to be sucked in from a side of webs and discharged through an air passage defined between each adjacent two of the radiation fins.
Claims11
An electronic component cooling apparatus comprising:
- a motor of the rotor out-rotation type in which a rotor is rotated outside a stator and which includes a housing;
- an impeller including a plurality of blades mounted on an outer periphery of said rotor;
- a casing arranged so as to surround said motor;
- a plurality of webs for interconnecting said housing of said motor and said casing;
- a heat sink including a base provided thereon with a plurality of radiation fins and fixed on said casing;
- said radiation fins being arranged so as to surround at least a part of said impeller;
- said blades of said impeller being arranged so as to draw in air from a side of said webs and while in the zone of said blades, generally change direction to move said air radially outward to pass through said radiation fins;
- said blades each having an upper edge facing said webs and sloping gradually away from said webs as each of said upper edge extends in an outward direction toward said radiation fins;
- said radiation fins being arranged so as to define an air passage between each adjacent two of said radiation fins for outwardly guiding air from said impeller therethrough.
An electronic component cooling apparatus comprising:
- a motor including a rotor and a stator and received in a housing;
- a cup-like impeller member having a plurality of blades mounted on an outer periphery thereof and fixed on said rotor;
- a frame-like casing for fixing said rotor therein;
- a plurality of webs for interconnecting said housing of said motor and said casing;
- and
- a heat sink including a base on which radiation fins each are arranged so as to substantially radially extend and terminate at an inner end thereof at an intermediate portion of said base;
- said heat sink being fixed to said casing;
- said radiation fins being disposed so as to permit a recess to be surroundedly defined by said inner ends of said radiation fins at a central region of said base, in which recess a part of said impeller is received;
- said radiation fins being arranged so as to permit an air passage to be defined between each adjacent two of said radiation fins;
- said blades being arranged so as to draw in air from a side of said webs and discharge air through said air passages of said radiation fins;
- said blades each having an upper edge facing said webs and sloping gradually away from said webs as each said upper edge extends in an outward direction toward said radiation fins;
- said casing including a connector section provided with a plurality of terminals to which power for driving of said motor is fed.
Dependencies are inferred from the claim text.