Heat exchanger tube for heating boilers
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United States of America Patent
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-
Jun 6, 2000
Grant Date -
N/A
app pub date -
Sep 16, 1996
filing date -
Mar 24, 1994
priority date (Note) -
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status (Latency Note)
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Abstract
The heat exchanger tube comprises a cylindrical, smooth walled outer tube (1) of steel into which a profiled insert (2) of aluminium is inserted. The profiled insert is constituted by two half shells (3,4) which engage in one another at their longitudinal edges with groove-shaped recesses (7) and rib-like projections (8). Both half shells (3,4) carry longitudinally extending ribs (5) on their internal surface which are so aligned that each half shell with its ribs constitutes a profile which is open on one side.
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