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:
Jan. 04, 2022
Filed:
Mar. 07, 2017
Applicant:
Mitsubishi Electric Corporation, Tokyo, JP;
Inventors:
Tatsuro Okubo, Tokyo, JP;
Hideo Terasawa, Tokyo, JP;
Assignee:
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K 9/06 (2006.01); B61C 3/00 (2006.01); F04D 25/06 (2006.01); H02K 7/08 (2006.01); H02K 7/14 (2006.01);
U.S. Cl.
CPC ...
H02K 9/06 (2013.01); B61C 3/00 (2013.01); F04D 25/06 (2013.01); H02K 7/08 (2013.01); H02K 7/14 (2013.01);
Abstract
A first bearing box has, in one end face perpendicular to a direction along a rotor shaft and farther from a fan, an air outlet for air taken in through an air inlet to exit. A flow channel is defined between an outer peripheral surface of a cylindrical portion of the first bearing box continuous with the end face and a frame. A value obtained by dividing a distance between an outer periphery of blades in the fan and the air outlet by an outer radius of the blades is greater than or equal to a threshold.