Liquid heaters and vaporizers – Subsidiary
Patent
1978-11-17
1980-07-01
Yuen, Henry C.
Liquid heaters and vaporizers
Subsidiary
122421, 126101, 165DIG2, 237 19, F22B 3300, F24D 308, F24D 902
Patent
active
042101026
ABSTRACT:
A space heater with a heat recovery system in which the exhaust gases from the hot air furnace are passed through a heat exchanger in which a set of water heating coils is disposed. The set of coils is connected to a hot water holding tank which is in turn connected to a bank of heat exchanger coils in the heated air outlet of the furnace. A damper is provided in the exhaust pipe of the furnace and a pipe connects the exhaust pipe on the anterior side of the damper with the heat exchanger, and a pipe connects the chamber with the exhaust pipe on the posterior side of the damper. A pump is provided for circulating the water between the first set of coils and the holding tank, and a fan forces the air form the exhaust pipe through the chamber in the heat exchanger. The pump and fan are controlled by a switch responsive to the operation of the furnace. The holding tank may be used to heat water supplied to a hot water heater of a hot water supply system.
REFERENCES:
patent: 1633759 (1927-06-01), Breese, Jr.
patent: 2020686 (1935-11-01), Kaiser
patent: 3980071 (1976-09-01), Barber, Jr.
patent: 4012191 (1977-03-01), Lisankie et al.
patent: 4090474 (1978-05-01), Kauffmann
patent: 4136731 (1979-01-01), DeBoer
patent: 4147301 (1979-04-01), Halma et al.
Hobbs Marmaduke A.
Yuen Henry C.
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