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.

公开(公告)号：US20250084857A1

公开(公告)日：2025-03-13

申请号：US18558369

申请日：2023-05-16

Applicant: MITSUBA Corporation

Inventor： SATOSHI NAGAMOTO ,  HIDETAKE OTA

IPC: F04D25/06 ,  F04D25/08 ,  F04D29/28 ,  F04D29/54

Abstract: A fan device (1) includes a shroud (4) including a motor support unit (42), a fan (3) disposed on a surface side of the motor support unit (42), and a motor (2) supported on a rear side of the motor support unit (42). Multiple air guide passages (426) each penetrating in a thickness direction at positions spaced apart in a circumferential direction and radially outward from a boss 31 of the fan (3) are formed in the motor support unit (42). The fan device (1) further includes an air guide unit (52) that is disposed facing the air guide passage (426) on the rear side of the motor support unit (42), and guides cooling air generated by the fan (3) and passed through the air guide passage (426) to a rear side of a motor bracket (21).