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. 31, 2017
Filed:
Jan. 10, 2013
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Takeshi Sano, Tokyo, JP;
Shinji Fukao, Tokyo, JP;
Koichi Ishizaka, Tokyo, JP;
Kenichi Niu, Tokyo, JP;
Yuya Fukuda, Tokyo, JP;
MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo, JP;
Abstract
A centrifugal fluid machine includes an impeller () that has a front shroud () arranged on one side in an axial direction, a rear shroud () arranged on the other side in the axial direction, and a plurality of blades () provided side by side in a circumferential direction between the front shroud and the rear shroud and is rotatably supported within a casing (); a suction passage (A) that allows a fluid to be sucked therethrough in the axial direction toward the impeller with the rotation of the impeller; a discharge passage (B) that allows a fluid delivered under pressure by the impeller with the rotation of the impeller to be discharged in a direction intersecting the axial direction of the impeller; and a first flow path (A) that communicates with the discharge passage, leads to the suction passage through a gap between the casing and the rear shroud, and an opening (Aa) that opens toward the downstream side of the suction passage in a suction direction of a fluid. The opening area of the opening is set so that the ejection speed (Vs) of a fluid ejected from the opening to the suction passage is matched with the suction speed (V) of a fluid sucked into the suction passage.