| 摘要 |
PROBLEM TO BE SOLVED: To provide a bent pipe air current noise reduction device enabling easy change in the shape of a rectifier vane for suppressing air current noise of a bent pipe. SOLUTION: The bent pipe air current noise reduction device 1 comprises a sealing part 10 detachably and attachably fixed on an pipe wall outside surface to cover and airtightly seal a through hole P2 provided on a pipe wall of a bent section P1 of a bent pipe P, a support part 11 projecting into a pipe through a through hole P2 from the seal part 10, and rectifier vane parts 12, 13, 14 formed on an pipe inside projection part of the support part 11 and including partition surfaces of a predetermined shape roughly dividing a channel of the bent section P1 into two in a curvature radius direction of the bent section P1. COPYRIGHT: (C)2009,JPO&INPIT
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