公开(公告)号：US20200041164A1

公开(公告)日：2020-02-06

申请号：US16597744

申请日：2019-10-09

Applicant: DENSO CORPORATION

Inventor： Yasue YONEZU ,  Ayumi KAWASAKI ,  Koichiro BABA ,  Shun OMORI

IPC: F24F13/20 ,  B60H1/00

Abstract: A recess that is provided at an end of a first case body includes an inner wall facing an air duct, an outer wall located on an outer side of a housing, and a bottom. A protrusion that is provided at an end of a second case body includes a tapered portion whose thickness in a cross sectional view gradually decreases from the second case body toward the bottom of the recess. The tapered portion is fitted between the inner wall and the outer wall of the recess. A taper angle is formed by a surface of the tapered portion facing the outer wall and a surface of the tapered portion facing the inner wall. The taper angle is larger than an internal angle formed by a surface of the outer wall facing the inner wall and a surface of the inner wall facing the outer wall.