Heating unit for hot tubs and/or spa units

Details Heating unit for hot tubs and/or spa units Heating unit for hot tubs and/or spa units

1981-07-13

1984-06-26

Scott, Samuel

Stoves and furnaces

Liquid heater

Solid fuel burner and submerged under the liquid

126366, 126368, 4545, F24B 900

Patent

active

044559976

ABSTRACT:
A submerged heating unit fueled by wood and/or coal is disclosed for heating water in a tub or spa unit. The heating unit is composed of a single shell of a highly heat-conductive metal, such as aluminum, and has a generally L-shaped configuration in cross-section. The unit is entirely submerged in the tank of water except for air and fuel inlets and an exhaust outlet.

REFERENCES:
patent: 394689 (1888-12-01), Hadley
patent: 428124 (1890-05-01), McGowen
patent: 430673 (1890-06-01), Naylor
patent: 547038 (1895-10-01), Slowey et al.
patent: 596892 (1898-01-01), Lowe
patent: 715895 (1902-12-01), Strahm
patent: 1237994 (1917-08-01), Barrett
patent: 1450444 (1922-08-01), McGuire
patent: 4164930 (1979-08-01), Johnston
patent: 4215668 (1980-08-01), Holcombe

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