Variable frequency drive system for fluid delivery system
US5522707A · kind A · utility
82Cited by
5References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 16, 1994 |
| Grant date | Jun 4, 1996 |
| Priority date | — |
| Expiry date | Nov 16, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/10
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fluid flow delivery system switches a variable speed pump drive among a plurality of pumps. The remaining pumps can be operated as constant speed pumps and can be energized one at a time in response to increasing demand. The pump associated with the variable speed drive can be operated over a variable output range to provide relatively low levels of fluid output, in response to low demand, and can be operated in combination with one or more constant speed pumps to provide increased levels of output fluid in response to greater demand levels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.