Modular infrared space heater device

DETAILED DESCRIPTION OF THE INVENTION In the accompanying drawings, which form a part of the specification and are to be read in conjunction therewith and in which like reference numerals are employed to indicate like parts in the various views: FIG.
1 is a perspective view of a modular heating device which is constructed in accordance with a preferred embodiment of the present invention; FIG.
2 is a rear elevational view of the modular heating device shown in FIG.
1; FIG.
3 is a cross sectional view on an enlarged scale taken along line 3--3 of FIG.
2; FIG.
4 is a cross sectional view taken along line 4--4 of FIG.
3; FIG.
5 is an enlarged sectional view on one of the tubular conduits used in the heating device of the present invention; and FIG.
6 is a schematic diagram of a control circuit which is suitable for use in the heating device of the present invention.
Referring now to FIGS.
1, 2, 3, and 4, numeral 10 is used to generally designate a modular space heater which is constructed in accordance with a preferred embodiment of the present invention.
This heater includes an outer casing 12 which is made of metal.
The outer casing is basically constructed to have the shape of a cube and is comprised of a top wall 14, a bottom wall 16 and four side walls 18, 20, 22 and 24.
The outer casing is supported by a pair of leg structures 26 and 28 which are arranged to rest on the floor or some other support surface.
The outer casing also has an intake opening 30 defined in side wall 18 and an outlet opening 32 defined in side wall 22.
The intake opening is in turn covered by a protective grill 34 while the outlet opening is covered by a protective grill 36.
The outer casing of the heating device encloses a heating chamber 38.
The heating chamber comprises a generally rectangular shaped chamber which is supported above the bottom wall 16 of the casing by means of a floor unit 40.
The floor unit is constructed from a single piece of ferrous metal which is formed to provide a rectangular shaped floor area 42 and a pair of lateral support legs 44 and 46 with in-turned end portions 48 and 50, respectively