Electric heater with thermistor temperature control
US5111527A · kind A · utility
5Cited by
11References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 1990 |
| Grant date | May 5, 1992 |
| Priority date | — |
| Expiry date | Mar 12, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24H15/407
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A forced gas electric heater has a serpentine heating element in series with a preheat coil. Gas to be heated first flows through the preheat coil before flowing through the serpentine heating element. A thermistor is disposed between two adjacent turns of the preheat coil. The thermistor controls the "on" time of a solid state power control device which is in series with the preheat coil and the serpentine heating element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.