Patent ID: 6763786
Filing Date: 2004-07-20
Classification: F24H,F28D

Abstract:
A gas-fired water heater, said water heater comprising a combustion chamber, said combustion chamber being made of a thermally insulating material and comprising:a first wall and a opposite second wall, said first and second walls each having an upper section, and a plurality of slot pairs, each said slot pair having a first slot formed in the upper section of the first wall and a second slot formed in the upper section of the second wall at a corresponding position to the first slot, and and a heat exchanger, said heat exchanger being at least partially made of a thermally conductive material and comprising: first and second heating elements, each heating element having a first end mounted in the first slot of a slot pair and a second end mounted in the second slot of said slot pair, said heating elements being parallel to one another, and a corrugated metal strip having a first plurality of crests at one side of the strip and a second plurality of crests at an opposite side of the strip, the corrugated metal strip being attached at the first plurality of crests to the first heating element and being attached at the second plurality of crests to the second heating element.