PTC air heater employing triangular PTC heating elements

Details PTC air heater employing triangular PTC heating elements PTC air heater employing triangular PTC heating elements

1988-07-27

1989-10-24

Bartis, Anthony

Electric heating

Heating devices

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

219376, 219382, 338 22R, H05B 102, H05B 306, F24H 304

Patent

active

048764361

ABSTRACT:
An electrically powered forced air heater includes six triangular PTC heating elements co-planarly disposed within a circular shroud with a apex of each element being disposed adjacent a common central point and the sides of the six PTC heating elements which are opposite the aforesaid apexes forming a hexagon. The area collectively occupied by the six PTC heating elements is greater than 78% of the cross sectional area of the circular shroud. The PTC heating elements are provided with a multiplicity of air flow holes therethrough and an electric fan is arranged to force air through the holes without interference with the rotational component of the fan-forced air vortex before the fan forced air strikes the PTC heating elements.

REFERENCES:
patent: 4233494 (1980-11-01), Pawlik et al.
patent: 4368380 (1983-01-01), Igashira et al.
patent: 4703153 (1987-10-01), Pelonis
patent: 4717813 (1988-01-01), Berg et al.

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