Liquid heaters and vaporizers – Stand boiler – Fluid fuel burner
Patent
1986-01-27
1988-04-05
Makay, Albert J.
Liquid heaters and vaporizers
Stand boiler
Fluid fuel burner
122156, 122159, 126362, F24H 100
Patent
active
047351748
ABSTRACT:
This gas hot water heater has a storage tank with a vertical flue having an elongated tube surrounding the flue to form an inverted inner tank that is closed at its top portion while being open at its bottom portion to the storage tank. A service water inlet pipe is located at the upper portion of the storage tank to discharge cold water into the upper portion of the inner tank to flow in a swirling direction down and around the outside of the flue. This downward swirling action of the cold service water relative to the upward flow of the hot flue gases within the flue tube represents the counterflow action. A thermostatic control valve is located through the wall of the upper portion of the inverted tank so as to open the valve to the inner tank when the water temperature within the inner tank reaches a normal, predetermined high temperature at a stand-by mode when no hot water is being drawn. Hence, the control valve is normally-open during high temperature stand-by conditions. At this point the heating action reverses flow direction by operating as a convection heat exchanger. The heated water rises up through the inner tank, out the control valve and into the outer tank.
REFERENCES:
patent: 1101872 (1914-06-01), Meacham
patent: 1552292 (1925-09-01), Fuller
patent: 1908149 (1933-05-01), Horton
patent: 1971139 (1934-08-01), Harris
patent: 2077323 (1937-04-01), Hendrix
patent: 2561465 (1951-07-01), Eplins et al.
patent: 2576603 (1951-11-01), Hines et al.
patent: 2773488 (1956-12-01), MacCracken et al.
patent: 3580224 (1971-05-01), Rouet
patent: 4474139 (1984-10-01), Dobias
patent: 4505231 (1985-03-01), Syles
Caslin Richard L.
Makay Albert J.
Warner Steven E.
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