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. 14, 2022
Filed:
Dec. 15, 2020
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Energy Systems & Solutions Corporation, Kawasaki, JP;
Takero Mukai, Yokohama Kanagawa, JP;
Masahiko Nakazono, Kawasaki Kanagawa, JP;
Toshifumi Kurokawa, Kamakura Kanagawa, JP;
Ryosuke Shima, Kawasaki Kanagawa, JP;
Kotaro Tezuka, Yokohama Kanagawa, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATTON, Kanagawa, JP;
Abstract
According to the embodiment, in a range from a plane Pincluding a runner rotation center axis C and an end pointEof an outlet endof the vane, up to a plane Pcorresponding to a position where the plane Pis moved by an angle, which is determined by dividing 360° by a value that is four times the number of vanes, in a runner rotation direction, when respective sections of the vaneare taken at a plane including the axis C and radially extending, in at least one section, a tangent Ton a centerline Cv of the vanepassing through an intersection X at which the centerline Cv and a flowing water surfaceintersect, and a tangent Ton the flowing water surfacepassing through the intersection X, define an acute angle on a negative pressure surface.