公开(公告)号：US20220243640A1

公开(公告)日：2022-08-04

申请号：US17585565

申请日：2022-01-27

Applicant: MITSUBA Corporation

Inventor： RYO NONAKA ,  HIDETAKE OTA

IPC: F01P1/06 ,  B60H1/00 ,  F01P5/06 ,  F04D29/54 ,  F04D19/00

Abstract: A fan shroud and a blower device are provided. The fan shroud includes a shroud wall surface and a plurality of ventilation openings. The shroud wall surface extends around a fan along a radial direction orthogonal to a rotation axis. The plurality of ventilation openings are formed through the shroud wall surface in a thickness direction of the shroud wall surface to allow passing of wind generated by a fan motor. A width of a wall surface side opening on a downstream side of the wind in the ventilation opening is smaller than a width of a lateral wall side opening on an upstream side of the wind in the ventilation opening.