Apparatus for producing heat transfer tube
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United States of America Patent
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Apr 7, 1981
Grant Date -
N/A
app pub date -
Mar 22, 1979
filing date -
Mar 24, 1978
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Apparatus for efficiently producing a wire fin tube for heat transfer which comprises fin-forming means for shaping a plurality of wires to a wavy shape, said fin-forming means including a pair of gears; means for guiding the wavy wires in an upstanding state including guide plates spaced apart a selected distance; means for feeding a revolving tube in a crossing direction, to the wavy wires so that the wires can be wound on the tube; means for controlling the operative speed relation of the fin forming means and the tube feeding means so that the wavy wires may be helically wound on the tube under a moderate tension so as to maintain the upstanding state and the same pitch as the distance of the guiding means; and means for welding the wire fins to the tube.
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