| 摘要 |
PROBLEM TO BE SOLVED: To provide a centrifugal fan with easy suction even in a thinned casing, and capable of reducing noise even while maintaining an air capacity. SOLUTION: An exhaust port 21 is provided in a sidewall of the casing 2, positioned in a delivery direction of an impeller 1, and air intakes 24, 25 are provided in one part of the sidewall of the casing 2. By this, a flow of air reaching the exhaust port 21 via a wind path 27 being a flow path between the impeller 1 and the casing 2 from the air intakes 24, 25 can be formed in a straight line. Therefore, even in a casing for a thinned mobile apparatus or the like, a necessary air capacity for cooling can be maintained by easily carrying out suction from the air intakes 24, 25. With respect to the necessary air capacity for cooling, noise is significantly reduced than a conventional one in the centrifugal fan 100, and noise reduction can be carried out. COPYRIGHT: (C)2009,JPO&INPIT
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