| 摘要 |
A heatsink apparatus has a radiator and a centrifugal pump in a closed circulation channel for circulating a coolant, wherein the centrifugal pump contacting a heat-generating component dissipates heat from the heat-generating component through heat exchange with the coolant. The centrifugal pump includes: a lower casing provided with a contact surface that contacts the heat-generating component; an upper casing; a ring-shaped sealing member provided between the lower and upper casings so as to form a round heat transfer chamber between the ring-shaped sealing member and the lower casing and to form a pump chamber that houses an impeller between the ring-shaped sealing member and the upper casing; a guiding member provided protruding on the lower casing to make the round heat transfer chamber a circulation channel; and the round heat transfer chamber connecting to a through-hole formed in a central portion of the ring-shaped sealing member.
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