Nec Corporation

Fuji Photo Film Company, Limited

Yasuo Ueno

Takashi Oyamada

Masaaki Nomura

Makoto Moribe

Toyomichi Nakamura

Yuka Katagiri

A sealed type casing comprises a casing body 10, a cover 9, one motor 12 fixed to a rear face plate 10a of the casing body, a plurality of inner and outer heat exchange fins 11a, 11b integral with and formed on inner and outer surfaces of the rear face plate so that the heat exchange fins are arranged vortically in an overlapping manner around a rotary shaft 12a of the motor, a first centrifugal fan 13 adapted to be rotated inside the casing body by the motor and sending the air to the inner heat exchange fins, and a second centrifugal fan 13 adapted to be rotated outside the casing body by the motor and sending outside air to the outer heat exchange fins. When the motor is rotated, the centrifugal fans apply a centrifugal force to the air sucked from a region close to the rotary shaft of the motor, and send out the air toward the heat exchange fins.

Sealed type casing

A cam mechanism according to the present invention is constructed in such a way that a face cam is secured to a rotary shaft which is rotated by a motor, and a pressing cam, which is movable along the rotary shaft, presses a cam follower pin toward a cam face of the face cam. The press cam has a cam face which faces the cam face of the face cam and has the same cam curve as that of the face cam. Hence, when the motor rotates, the swing pin follows the cam face of the face cam, and the press cam presses the swing pin with a substantially constant force while remains stationary at substantially the same position. Thus, it is possible to reduce a contact friction on the cam face and a load torque which is generated when the motor is driven, and it is also possible to eliminate the unevenness of the torque, which results from the movement of the cam follower which moves up and down on the cam face.

Cam mechanism

A heat exchanging device of the present invention includes two fluid compressing means respectively mounted on the centers of both sides of a partition, each for feeding a respective fluid under pressure. A plurality of passageways adjoin each other around the fluid compressing means, and each faces the associated fluid compressing means at one end while facing the outside of the partition at the other end. The passageways protrude from both sides of the partition. Among the passageways, either the odd passageways or the even passageways are open on the front side of the partition at both ends while the other passageways are open on the rear side of said same at both ends. Two fluids of different temperatures respectively compressed by the fluid compressing means are respectively fed under pressure from one ends to the other ends of the odd passageways and the even passageways while contacting each other with the intermediary of the side walls of the passageways to thereby exchange heat.

Growing community of inventors

Tokyo, Japan

Yasuo Ueno