公开(公告)号：US20190145427A1

公开(公告)日：2019-05-16

申请号：US16097853

申请日：2017-05-10

Applicant: DENSO CORPORATION

Inventor： Kazuhiro TAKEUCHI ,  Masashi MATSUKAWA ,  Isao KONDO

IPC: F04D29/54 ,  F04D29/66 ,  F04D29/68 ,  F04D29/16 ,  F04D29/32

Abstract: A fan shroud, in which air flows from a suction port to an outlet port, includes: a bell mouth part having a circular wall, the outlet port being formed by the bell mouth part; and a rectangle part having a proximity wall located adjacent to the circular wall and a distal wall distant from the circular wall than the proximity wall, the suction port being formed by the rectangle part. The proximity wall has a most close area that is most close to the circular wall. The circular wall has an extended wall part extended in an axial direction of a propeller fan than a residual portion of the circular wall. The extended wall part is provided along a rotational direction of the propeller fan from a position opposing the most close area.