To provide a pump device capable of keeping airtightness high and stably and efficiently pressure-feeding fluid and to provide a cooling apparatus equipped with the pump device.
The pump device 10 has, in a housing 1 connected to a pipe 20 through which the fluid can flow, a check valve 6, a movable body 2, a bellows supported at opposite ends by check valve 6 and the movable body 2, and a coil spring 5 supporting the movable body 2 and the bellows 8 on an inner wall of the housing 1. The movable body 2 is provided with a magnet 4 and a check valve 7. A coil 3 is provided on an outer periphery of the housing 1 for reciprocating the movable body 2 including the magnet 4 in a flow direction of the fluid. When the bellows 8 is expanded through reciprocation of the movable body 2, pressure in the bellows is decreased and the fluid flows in from the pipe 20 through an opening portion 1b and the check valve 6. When the bellows is constricted, the pressure in the bellows 8 is increased and the fluid flows out through the check valve 7 and an opening portion 1d.
COPYRIGHT: (C)2007,JPO&INPIT
HASHIMOTO MITSUO
KOMAMI TAKUYA
GOTO KAZUO
YOSHITAKA HIROYUKI
