Zoning circulator controller
US5466995A · kind A · utility
40Cited by
16References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 29, 1993 |
| Grant date | Nov 14, 1995 |
| Priority date | — |
| Expiry date | Sep 29, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K17/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A zoning circulator for circulating fluid within a zone in a hydronic heating or cooling system includes a zoning circulator controller including a speed regulating circuit for controlling the speed of a circulator motor. The circulator controller also includes an override circuit for operating the circulator at a high speed, high starting torque for several seconds to overcome frictional resistances between the moving parts of the motor and then tapers down to the speed established by the speed regulating circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.