F - Mech Eng,Light,Heat,Weapons – 24 – H
Patent
F - Mech Eng,Light,Heat,Weapons
24
H
F24H 1/18 (2006.01) F24H 1/20 (2006.01) F24H 9/20 (2006.01)
Patent
CA 2426723
In a domestic gas water heater, it is necessary to exhaust the product of combustion through a flue. In this invention, combustion products generated by a burner pass through a flue, generally circular in cross section, is helically and coaxially composed of within the tank. This then comprises an upward spiral path for the combustible gases to be discharged. Properties of this embodiment cause the flue to provide excellent heat exchange with the water therein and to be heated through the large surface area exposed to the water. The gravitational flow of the exhausting hot flue gases causes high efficiency and markedly diminishes the overall gas consumption. In order to prevent heat loss in the standby mode, a damper provided in the flue on top of the water containing tank will be closed. This will maintain the heat retention within the flue and to cause the heat therein to further dissipate within the water to be heated.
Na
Rusch William H.
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