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. 09, 2018
Filed:
Jul. 08, 2013
Propeller fan, and air blower, air conditioner, and hot-water supply outdoor unit including the same
Applicant:
Mitsubishi Electric Corporation, Tokyo, JP;
Inventors:
Assignee:
Mitsubishi Electric Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D 29/38 (2006.01); F04D 19/00 (2006.01); F04D 29/54 (2006.01); F04D 29/66 (2006.01);
U.S. Cl.
CPC ...
F04D 29/384 (2013.01); F04D 19/002 (2013.01); F04D 29/545 (2013.01); F04D 29/663 (2013.01); F04D 29/667 (2013.01); F05D 2240/301 (2013.01); F05D 2240/307 (2013.01);
Abstract
The propeller fan includes a boss including a rotation axis, a plurality of blades formed on an outer periphery of the boss, and a bellmouth arranged so as to surround the plurality of blades at a trailing edge side of each of the blades. Each blade has a bending portion that bulges toward an upstream side of the air current in a cross-sectional shape in a radial direction, and a bend of the bending portion of the blade at an inner side of the bellmouth is set to be gentler than a bend of the bending portion of the blade at an outer side of the bellmouth.