Pump and pump control circuit apparatus and method
US8641383B2 · kind B2 · utility
38Cited by
87References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2007 |
| Grant date | Feb 4, 2014 |
| Priority date | — |
| Expiry date | Oct 31, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B2205/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Embodiments of the invention provide a method of controlling a pump. The method includes sensing a pressure in the pump and entering a low-flow mode when the sensed pressure in the pump is greater than a low pressure threshold. The method also includes reducing power to the pump when the sensed pressure is greater than a shut-off pressure during the low-flow mode and there is flow through the pump until the sensed pressure is less than the shut-off pressure. The method further includes turning the pump off when in the low-flow mode the sensed pressure is greater than the shut-off pressure and there is no flow through the pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.