| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a simply formed cooling device allowing reduction in size and thickness while improving cooling efficiency. <P>SOLUTION: In this cooling device, a radiator and a contact heat exchange type centrifugal pump are installed in a closed circulation passage for circulating refrigerant, the centrifugal pump is brought into contact with a heating electronic part 1 to remove heat from the heating electronic part by the heat exchange action of the refrigerant in the centrifugal pump for radiating heat from the radiator. The centrifugal pump comprises a pump casing 15 formed of a high heat conductive material and an open type impeller 11. A heat receiving surface 15b along a pump chamber 15a in the pump casing is formed in the pump casing 15 in such a shape in a contact state that is complemental to the three-dimensional shape of the upper surface of the heating electronic part 1. A suction passage 19 is installed between the heat receiving surface 15b and the inner wall surface of the pump chamber 15a. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
