Patent ID: 7150311

Claim:
A radiation module capable of resisting reverse flow of hot fluid, comprising; a fan, providing a square fan frame with a circular inlet and a circular outlet and a first through hole being provided at four corners of the fan frame for being passed through with a fastener respectively; a square plate shaped retaining tool, being disposed next to the fan, providing a second through hole at four corners thereof corresponding to the first through hole for being passed through with the fastener, a first elongated holding part extending downward from the center of a lateral side thereof, a slot being disposed at another lateral side thereof corresponding to the first holding part available for a second elongated holding part passing through and both of the holding parts having an engaging hole at lower ends thereof; a square radiator, being disposed next to the retaining tool to be associated with the retaining tool and the fan with the fastener and being embraced by the holding parts, providing a plurality of parallel cooling fins and a plurality of flow passages being disposed between the cooling fins to space apart the cooling fins such that hot fluid is capable of moving outward via both lateral ends of the respective flow passages; and a base seat, being a square frame attached to a main board for receiving the bottom of the radiator, a locking piece jutting out the center of two opposite sides thereof for engaging with the engaging holes respectively; and a heat-generating component, being disposed on the main board and in the base seat to be kept contact with the bottom of the radiator; characterized in that a rectangular baffle part extends from periphery of the inlet across two opposite lateral sides of the fan fame and along another two lateral sides of the fan frame such that the baffle part is arranged at a position exceeding the lateral ends of the respective flow passage; whereby, fluid, which enters the fan via the inlet and flows toward the radiator via the outlet to perform heat transfer to heat in the radiator and moves outward from both lateral ends of the respective flow passage, is resisted to move back to the inlet by means of the baffle part.