Spiral heat exchanger for producing heating and/or sanitary use hot water, specifically designed for condensation applications
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United States of America Patent
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Jan 7, 2014
Grant Date -
Jul 8, 2010
app pub date -
Dec 3, 2009
filing date -
Dec 16, 2008
priority date (Note) -
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Abstract
A spiral heat exchanger for producing heating and/or sanitary use hot water, specifically designed for condensation applications, characterized in that said spiral heat exchanger comprises a duct, preferably though not exclusively made of a thermally conductive material and having a contoured cross-section, called outer duct, inside which can be either arranged or not a second duct, preferably though not exclusive made of a thermally conductive material, called inner duct; the geometrical construction of said outer duct being defined as a resultant obtained by joining two different diameter circumferences, said circumferences being spaced from one another by a constant or variable radius junction pattern; the thus obtained single or double duct being coiled or spiral wound on a diameter substantially larger than the size of said duct thereby providing a hollow cylinder.
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