Patent · US Active

Diffuser for cable suspended dewatering pumping system

US9482078B2 · kind B2 · utility

2Cited by

18References

20Claims

0Family size

Assignee

ZEITECS B.V. · NL

Inventors

Christian Carstensen · Aachen, DE
Rik W. De Doncker · Leuven, BE
Helge Brauer · Gochsheim, DE
Holger Franz · Aachen, DE
Johannes P. Schmidt · Aachen, DE
Benjamin Eduard Wilkosz · Aachen, DE

Key dates

Filing date	Jun 19, 2013
Grant date	Nov 1, 2016
Priority date	—
Expiry date	Nov 23, 2034

Classification

Technology area (CPC H)Electricity
CPC primaryH02K16/00
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A pump includes one or more stages, each stage including a tubular housing and a mandrel disposed in the housing. The mandrel includes a rotor rotatable relative to the housing and having: an impeller, a shaft, and one or more helicoidal blades on an outer surface of the impeller. The mandrel further includes a diffuser: connected to the housing, having the rotor shaft extending therethrough and having a plurality of vanes on an outer surface thereof. Each vane has an arcuate portion and a longitudinal portion. The diffuser further has a channel formed between an adjacent pair of vanes. The pump further includes a fluid passage formed between the housing and the mandrel.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.