The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 04, 2019
Filed:
Feb. 20, 2015
Denso Corporation, Kariya, Aichi-pref., JP;
Toshikatsu Kondou, Kariya, JP;
Masashi Matsukawa, Kariya, JP;
Youhei Kamiya, Kariya, JP;
Masaru Kamiya, Kariya, JP;
Takeshi Miyamoto, Kariya, JP;
Isao Kondoh, Kariya, JP;
Takashi Ito, Kariya, JP;
Kazuhiro Takeuchi, Kariya, JP;
DENSO CORPORATION, Kariya, Aichi-pref., JP;
Abstract
A blower fan includes a plurality of blades radially extending from a boss provided at the rotary center and spaced apart from each other in the rotational direction, and a ring portion connecting outer peripheral ends of the blades in a ring shape. An inner peripheral wall surface of an end part on an air-flow downstream side of a cylindrical portion is disposed on the outside in a radial direction of the rotary shaft in the blower fan, with respect to an end part on the air-flow downstream side of the ring portion. The end part on the air-flow downstream side of the cylindrical portion is positioned outward in the radial direction of the rotary shaft, as toward the air-flow downstream side. Thus, the blower can prevent the backflow air from being swirled, thereby reducing noise.