Method of establishing a preferred rate of air flow, method of determining torque, and apparatus
US4638233A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 24, 1985 |
| Grant date | Jan 20, 1987 |
| Priority date | — |
| Expiry date | Oct 24, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of determining torque of an electronically commutated motor arranged to drive a blower means for flowing air through a contained space with the electronically controlled motor and the blower means having a combined predetermined inertia. In practicing this method, power is applied to the electronically commutated motor, and the blower means is thereby accelerated to a predetermined speed. The power is then removed from the electronically commutated motor, and thereby the blower means is decelerated. The deceleration of the blower means is measured, and the torque of the electronically commutated motor is computed from the measured deceleration. A method of establishing a preferred rate of air flow and apparatus are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.