Volute shaped pump casing for a centrifugal pump
US8939720B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 10, 2011 |
| Grant date | Jan 27, 2015 |
| Priority date | — |
| Expiry date | Jan 5, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/448
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A volute shaped pump casing (1) for a centrifugal pump includes a chamber for housing at least one impeller (4) mounted on a shaft (2) for rotating the impeller around an axis of rotation (2a), a volute shaped chamber which forms a flow channel divided into a first volute (5.1) and a second volute (5.2), and a first channel (6.1) and a second channel (6.2) connected to the first and the second volute respectively. The first channel is also called long channel and the second channel is also called short channel. In the volute shaped pump casing (1), the first or long channel (6.1) is axially displaced with respect to the second or short channel (6.2) and/or with respect to the second volute (5.2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.