| 摘要 |
PURPOSE:To enable provision of required velocity of flow distribution with a low pressure loss in a cooling flow passage, by a method wherein the parallel porosity flow passage of a communicating cell porosity member having a number of through-holes is formed through the combination of a fan-shaped flow uniformizing unit and sloped flow uniformizing units. CONSTITUTION:In the air speed control plate for air cooling of a mechanism formed with a heat generating body, a cooling fan, etc., the parallel porosity flow passage of a communicating cell porosity member having a number of through-holes is formed through the combination of plural flow uniformizing units, e.g., a fan-shaped flow uniformizing unit 12, formed in the shape of a fan, sloped flow uniformizing units 10 and 11, each having parallel porosity flow passages formed obliquely to the incoming direction of air. This constitution enables provision of required velocity of flow distribution with a low pressure loss in a cooling flow passage and an instrument which is reduced in volume and decreases the generation of low noise.
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