HEAT RADIATOR, ITS FAN FRAME STRUCTURE, AND HEAT RADIATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a heat radiation fan having a smooth curved expansion part capable of reducing noise generated by friction of air stream and a wall part of a fan frame, stabilizing and concentrating air stream, and increasing performance and to provide its fan frame structure and a heat radiation system.

SOLUTION: This fan frame structure of the heat radiator includes a column-like passage 216 for leading air stream from an opening on one side to an opening on the other side. An inner peripheral wall of the column-like passage 216 on at least one opening side has the smooth curved expansion part F enlarged outward in the radial direction.

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