Method and arrangement relating to circulation pumps
US6289854A · kind A · utility
3Cited by
7References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1999 |
| Grant date | Sep 18, 2001 |
| Priority date | — |
| Expiry date | Nov 29, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2260/14
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A circulation pump for pumping a fluid, for example for heat interchange, by way of a rotating impeller is included in a circulation system that includes a first feeder liner from a heat source to a cooling device, a return line from the cooling device to the pump and a valve for shunting the outflow from the heat source via a bypass line back to the pump. The bypass line is connected to the pump in such a way that a flow essentially from this line produces and/or increases a pre-rotation of the inflow to the impeller, which pre-rotation results in a reduction of the power required by the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.