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:
Dec. 27, 2022
Filed:
Mar. 05, 2021
Applicant:
Nuovo Pignone Tecnologie—s.r.l., Florence, IT;
Inventors:
Assignee:
NUOVO PIGNONE TECNOLOGIE SRL, Florence, IT;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/22 (2006.01); F04D 1/00 (2006.01); F04D 29/00 (2006.01); F04D 29/62 (2006.01);
U.S. Cl.
CPC ...
F04D 1/006 (2013.01); F04D 29/007 (2013.01); F04D 29/2205 (2013.01); F04D 29/2255 (2013.01); F04D 29/628 (2013.01); Y02E 10/20 (2013.01);
Abstract
A double suction impeller is disclosed. In at least one embodiment, the impeller is configured for centrifugal pumps and hydraulic power recovery turbines. The impeller's flow-path arrangement comprises inter-blade channels, intersecting each other at the impeller's outer diameter and defining a variable cross section shape, so that the equivalent number of blades is at least doubled with respect to a conventional configuration obtained by the coupling of two single suction impellers and an improved control over the velocity of the flow within the inter-blade channels is achieved.