Heat transfer tube expansion apparatus
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United States of America Patent
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Mar 14, 2017
Grant Date -
Apr 28, 2016
app pub date -
May 1, 2014
filing date -
Jun 28, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A heat transfer tube fixing apparatus of a heat transfer tube expansion apparatus has grasping sections and a moving section. The grasping sections grasp one axial direction end sections of a plurality of heat transfer tubes in a state where the heat transfer tubes are inserted in a plurality of heat transfer fins. The moving section switches between a first state of covering the surroundings of the grasping sections and a second state of not covering the surroundings of the grasping sections by moving in the axial direction of the heat transfer tubes. The grasping sections fix the heat transfer tubes so as not to move in the axial direction and the heat transfer fins and the heat transfer tubes are fixed by the heat transfer tubes expanding in a state where the moving section is in the first state.
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