Patent · US Expired

Centrifugal pump with inflow guide device

US6273677A · kind A · utility

12Cited by

5References

5Claims

0Family size

Assignee

KSB Aktiengesellschaft · DE

Inventors

Baogang Wang · Bischofswerda, DE
Juergen Schill · Bad Dürkheim, DE
Dieter-Heinz Hellmann · Kaiserslautern, DE

Key dates

Filing date	Nov 29, 1999
Grant date	Aug 14, 2001
Priority date	—
Expiry date	Nov 29, 2019

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04D29/4273
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A centrifugal pump having an axial inlet and an inflow guide device mounted upstream of the impeller, which guide device is composed of several fixed guide vanes, which on the side facing the impeller each have an edge pointing in or opposite to the direction of rotation of the impeller. The edge pointing in or opposite to the direction of rotation may take the form of a swirl blade (8) which is formed on the guide vane (6) and located in the vicinity of the wall of the inlet (2), and which has a shorter radial length than the guide vane (6). This increases the efficiency of the pump and achieves an effect which increases the breadth of applicability of the pump.

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