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.

Date of Patent:
Sep. 20, 2016

Filed:

Dec. 02, 2015
Applicants:

Denso Corporation, Kariya, Aichi-pref., JP;

Nippon Soken, Inc., Nishio-shi, Aichi-pref., JP;

Inventors:

Yasushi Mitsuishi, Anjo, JP;

Masaharu Sakai, Obu, JP;

Masanori Yasuda, Okazaki, JP;

Shouichi Imahigashi, Kariya, JP;

Syunsuke Ishiguro, Chiryu, JP;

Assignees:

DENSO CORPORATION, Kariya, Aichi-pref., JP;

NIPPON SOKEN, INC., Nishio, Aichi-pref., JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D 29/42 (2006.01); F04D 17/16 (2006.01); F04D 17/10 (2006.01);
U.S. Cl.
CPC ...
F04D 29/4233 (2013.01); F04D 17/10 (2013.01); F04D 17/16 (2013.01); F04D 17/162 (2013.01); F04D 29/4213 (2013.01); F04D 29/4226 (2013.01);
Abstract

A centrifugal blower provided with a spiral shaped scroll chamber where a bottom part of the scroll chamber gradually expands downward in the axial direction of the fan well along with expansion of the spiral and where a flow area gradually expands toward an air outlet from a spiral start part of the casing, the centrifugal blower having an initial slant angle θat the spiral start part of the bottom part of the scroll chamber of a range of angle of 5.2° to 27.5° or setting a backflow prevention rib at the fan outlet.


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