Stoves and furnaces – Heaters – Surface
Patent
1976-02-09
1978-02-14
Sprague, Kenneth W.
Stoves and furnaces
Heaters
Surface
62238, 122 18, F24J 302, F22B 502
Patent
active
040732851
ABSTRACT:
A typical automatic hot water tank installation has a self-contained source of heat for the water and is provided with external hot water from a solar collector, air conditioning condenser, or other suitable source. An external hot water handling assembly replaces the conventional drain valve at the bottom of the tank and includes a pair of concentric tubes. The outer one of the tubes is connected through the tank drain connection and has its open end proximate the tank wall. The inner tube extends into the tank inwardly from the outer tube and its opening is approximately midway across the tank and is directly upwardly to provide an inlet for discharge of the external hot water upwardly into a lower portion of the tank, and away from the cold water leaving the tank through the outer tube. Spacing apart of the hot water inlet and cold water outlet substantially retards passage of the hot water directly to the cold water proximate the outlet. Outer connections of the nested tubes are sealed from each other, the outer tube being connected through a pump for circulating the cold water to the external heating source and for circulating hot water from this source through the inner tube and into the hot water tank. The outer tube is preferably provided with a drain, to replace the conventional drain which was removed from the tank prior to installing the nested tube assembly.
REFERENCES:
patent: 1317039 (1919-09-01), Schneider
patent: 1366208 (1921-01-01), Noonan
patent: 1862630 (1932-06-01), Morrow
patent: 2366507 (1945-01-01), Ford
patent: 3513663 (1970-05-01), Martin, Jr. et al.
patent: 3922876 (1975-12-01), Wethering, Jr. et al.
Lowe James L.
Mouzavires William E.
Sprague Kenneth W.
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