HEAT EXCHANGE CELL FOR A HEATING BOILER
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United States of America Patent
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Issued Date -
Sep 12, 2019
app pub date -
Feb 22, 2019
filing date -
Mar 12, 2018
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Abstract
A heat exchange cell for a heating boiler includes a casing with a sidewall enclosing an internal space, the sidewall having an open front end surrounded by an annular edge of the casing front end. A sheet metal annular closing flange has an opening and radially internal, intermediate and external flange edges. The radially external flange edge connects to the casing sidewall along the annular edge. The radially internal edge defines radially internal and external surfaces. A front edge surface connects the radially internal surface and radially external surface. The front edge surface defines a lying plane on which the front edge surface lies, the lying plane defining an axial direction orthogonal to the lying plane and passing through the opening, and a radial direction orthogonal to the axial direction. The radially internal surface extends parallel to the axial direction protruding towards an outside of the cell.
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