Feedback-controlled radiant furnace for firing ceramic material and the like
US4114024A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 6, 1975 |
| Grant date | Sep 12, 1978 |
| Priority date | — |
| Expiry date | Aug 6, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D23/1904
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A radiant furnace for firing ceramic material provides for accurate control over the rate of increase of the ceramic material temperature during a firing operation. Heat is radiated in the furnace from an electrically controlled heater. A first programming signal is produced to represent a manually selected rate at which the temperature is to be raised, and a second programming signal is produced to represent a manually selected target temperature beyond which the ceramic material temperature is not to be raised. Circuitry responsive to the first and second programming signals produces a command signal varying in magnitude to define a ramp having a peak value. The command signal is applied to a closed-loop heating control subsystem employing a thermo-sensitive transducer for providing a feedback signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.