Electric resistance heating devices – Heating devices – Convection space heater
Patent
1995-01-31
1998-11-17
Hoang, Tu Ba
Electric resistance heating devices
Heating devices
Convection space heater
392373, F24H 304
Patent
active
058388788
ABSTRACT:
A portable electric heater including a housing having a bottom wall with front and back portions, a rear wall, a pair of side walls each having front and back portions, a top wall with front and back portions, a divider wall having a given area, and a front grill wall. The rear wall, divider wall and back portions of the bottom, side and top walls define a chamber while the divider wall, the front grill wall, and the front portions of the bottom, side and top walls define a cavity horizontally juxtaposed to the chamber. A plurality of elongated quartz heater elements and a temperature sensor are mounted in the cavity, and an electrically energizable fan is mounted in the chamber. Defined in the rear wall are a plurality of inlet openings, and in the divider wall are a plurality of discharge openings having a combined area equal to less than 2.5% of the given area. Limiting the overall area of the discharge openings reduces in the cavity turbulence which can prevent the detection of hot spots by the temperature sensor.
REFERENCES:
patent: 2410211 (1946-10-01), Gough
patent: 2433137 (1947-12-01), Marr
patent: 3051820 (1962-08-01), Krichton
patent: 5381509 (1995-01-01), Mills
Jane Rodney
Wong Arthur
Hoang Tu Ba
Honeywell Consumer Products Inc.
Jarcho Harold G.
Toupal John E.
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