Sanyo Denki Co., Ltd.

Intel Corporation

Michinori Watanabe

Toshiki Ogawara

Haruhisa Maruyama

Masayuki Iijima

Yuichi Kodaira

Nobumasa Kodama

Shinjiro Yokozawa

Noriyasu Sasa

Michihiro Suzuki

Toshiyuki Nakamura

Shuji Inoue

Kesatsugu Watanabe

Yoshihiro Wada

Akiyoshi Kuroda

A fan casing, webs, and a motor casing are integrally formed of a resin material by injection molding to configure a fan housing. An electrically grounded electromagnetic noise guard and a bearing holder to which an outer race of a ball bearing are electrically connected by an electrically-conducting path member provided in the fan casing by means of insert molding. Thus, the ball bearing may sufficiently be prevented from suffering electric corrosion in an electric fan of which a fan housing is made of an insulating resin.

Electric fan

An axial-flow fan unit that produces less noise is provided. Bladesare exposed from a venturi. The shape of each of the bladesis so defined that a space formed between at least an inner surfaceof each of web leg sectionsA toC and an edgeof each of the bladeslocated in the radially outward direction of the bladesexpands toward the ends of the web leg sectionsA toC (or web bodiesA toC). With this arrangement, noise produced when the bladesrotate along the web leg sectionsA toC is reduced.

Axial-flow fan unit and heat-emitting element cooling

There is provided a fan unit in which when the fan unit is conveyed, existence of a plurality of lead wires will not become an obstacle to the conveyance. Four lead wire engaging sections, andare provided along the contour of an outer wall sectionof a fan casingas the fan casingis viewed from a predetermined position in a forward direction. Then, the lead wire engaging sectionsandare configured to engage a part of lead wiresso as to prevent the lead wiresfrom coming out of the fan casingone or more during the conveyance.

Heat-emitting element cooling apparatus

Electronic component cooling apparatus

Axial-flow fan unit and heat-emitting element cooling apparatus

Heat sink

A heat-emitting element cooling apparatus that can improve a cooling effect on a heat-emitting element without increasing its size is provided. A heat sink is so constructed that all or part of radiation fins are located outside the contour of a base as seen from a side on which an axial flow fan unit is mounted. Then, the axial flow fan unit is so constructed as to discharge air along the portions of the radiation fin located outside the contour of the base.

The present invention provides a cooling apparatus which can increase air flow. A plurality of blades are provided with extending portions of the blades which extend outwardly in the direction of the diameter of the axis of the motor and rotate at such a space that is outside and surrounds the opening in the space . The extending portions of the blades are integrally formed with the blades . The rim portions of the extending portions of the blades which are disposed on the side of the first wall part and extend along the first wall part are sloped so as to be gradually away from the first wall part as they extend toward the edges.

Cooling apparatus for cooling electric element

Growing community of inventors

Nagano, Japan

Michinori Watanabe