Radiant electric heater

Details Radiant electric heater Radiant electric heater

1998-12-15

2000-01-25

Paschall, Mark

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

2194431, 2194571, 219483, 2194601, 2194611, 2194651, 2194661, 2194671, 219540, H05B 102, H05B 100

Patent

active

060181494

ABSTRACT:
A radiant electric heater has first, second and third heating zones (1, 2, 3) arranged substantially side-by-side. The first heating zone (1) is provided with at least one first heating element (9). The second heating zone (2) is arranged adjacent to the first heating zone and is provided with at least one second heating element (10). The third heating zone (3) is arranged adjacent to the second heating zone and is provided with at least one third and one fourth heating element (11, 12). A switch (15) is provided for switching between first, second and third heating states. In the first heating state the at least one first heating element (9) of the first heating zone (1) is energised alone, the at least one second, third and fourth heating elements (10, 11, 12) of the second and third heating zones (2, 3) being de-energised. In the second heating state the at least one first heating element (9) of the first heating zone (1) is electrically connected and energised in parallel with the at least one second heating element (10) of the second heating zone (2), the at least one third and fourth heating elements (11, 12) of the third heating zone (3) being de-energised.

REFERENCES:
patent: 4158127 (1979-06-01), Husslein
patent: 4371780 (1983-02-01), Gossler et al.
patent: 4808798 (1989-02-01), Goessler et al.
patent: 5171973 (1992-12-01), Higgins
patent: 5204510 (1993-04-01), McWilliams et al.
patent: 5270519 (1993-12-01), Higgins
patent: 5498854 (1996-03-01), McWilliams

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