Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1978-04-24
1980-12-30
Bartis, A.
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
55 80, 62 93, 126101, 126361, 126362, 219279, 219325, 219330, 219331, 237 19, H05B 102, F24H 120
Patent
active
042425697
ABSTRACT:
A hot water heater includes inner and outer tanks for holding water. The tanks are interconnected in such a manner that the cold water is received in the outer tank prior to flowing into the inner tank to be heated. Hot water is drawn from the inner tank for use. A heating element is located within the inner tank for heating the water within the inner tank. The cooler water in the outer tank surrounds the inner tank and thermally insulates the water in the inner tank from the outside environment. Any heat losses from the inner tank heat the cooler water in the outer tank, which is ultimately supplied to the inner tank for heating.
Temperature sensors are provided within the inner tank and the outer tank, and a third temperature sensor senses ambient temperature of the room air outside of the outer tank. A fan directs ambient room air against the outerwall of the outer tank to provide heating of the water within the outer tank, which is cooler than ambient room temperature. A control controls the heating of the water within the inner tank as a function of the differential between the temperature sensed in the inner and outer tanks, and controls the operation of the fan as a function of the differential between the temperatures of the water within the outer tank and ambient room temperature.
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