Stoves and furnaces – Heaters – Surface
Patent
1975-12-15
1977-01-18
Cline, William R.
Stoves and furnaces
Heaters
Surface
126270, 165106, F24J 302
Patent
active
040033678
ABSTRACT:
A solar water heater comprises a unitary housing structure providing a thermally insulated storage compartment and a heating, or collector, compartment of substantially smaller volume than the storage compartment. The two compartments are interconnected by first and second liquid flow passages extending through an insulating wall portion, forming a thermosiphon responsive to absorption of solar radiation by the collector; one of the liquid flow passages extends between an inlet communicating with the storage compartment in the lower portion thereof and an outlet communicating with the heating compartment in the lower portion thereof, the passage providing a first duct portion extending upwardly within the insulation of the frontal wall portion from the inlet, a second duct portion extending upwardly within the insulation of the frontal wall portion from the outlet, and an intermediate duct portion interconnecting the first and second duct portions. Conductive heat exchange means are provided between the intermediate duct portion of the liquid flow passage and the upper portion of the storage compartment for inhibiting reverse flow of liquid when the liquid in the heating compartment is cooler than the liquid in the storage compartment.
REFERENCES:
patent: 433055 (1890-07-01), Tellier
patent: 966070 (1910-08-01), Bailey
patent: 3220470 (1965-11-01), Balch
patent: 3267996 (1966-08-01), Valente
patent: 3390672 (1968-07-01), Snelling
patent: 3901036 (1975-08-01), Martin
patent: 3919998 (1975-11-01), Parker
patent: 3923038 (1975-12-01), Cutchaw
Cline William R.
Spiegel H. Jay
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