公开(公告)号：US11852362B2

公开(公告)日：2023-12-26

申请号：US17215659

申请日：2021-03-29

Applicant: DENSO CORPORATION

Inventor： Ippei Nagata

IPC: F24F1/38 ,  F04D29/44 ,  F24F1/0018

CPC classification number: F24F1/38 ,  F04D29/44 ,  F24F1/0018

Abstract: A blower includes: an outside/inside air box into which outside air and inside air are introduced; an impeller to suck and blow out air introduced into the air box; a casing having a bell mouth that forms an air suction port to the impeller, the casing forming a ventilation passage on an outer side of the impeller in a radial direction; and a plate-shaped member provided with a predetermined gap relative to the casing and the bell mouth. A gap passage is defined between the casing and the plate-shaped member. A guide rib is provided at a part of the gap passage opposite to an opening through which air flows into the gap passage. The guide rib guides air flowing through the gap passage in a circumferential direction of the bell mouth.