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:
Apr. 28, 2020
Filed:
Oct. 07, 2015
Mitsubishi Electric Corporation, Tokyo, JP;
Atsushi Kono, Tokyo, JP;
Takashi Ikeda, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A blower includes a volute shaped casing having an air inlet, and an impeller including a disk-shaped backing plate, a ring-shaped rim, and a plurality of blades supported between the backing plate and the rim. The impeller is housed in the casing. Each of the blades includes a first blade segment adjacent to the backing plate, and a second blade segment provided between the first blade segment and the rim. Each of the blades has a blade outlet angle at a trailing edge of the second blade segment different from a blade outlet angle at a trailing edge of the first blade segment. At least one of a pressure surface of the second blade segment and a suction surface of the second blade segment includes a flat surface extending toward a leading edge of the second blade segment from the trailing edge of the second blade segment.