Cross-fin type heat exchanger and refrigeration cycle apparatus including the same
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United States of America Patent
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Jan 12, 2016
Grant Date -
Feb 7, 2013
app pub date -
May 12, 2010
filing date -
May 12, 2010
priority date (Note) -
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Abstract
A plurality of heat transfer fins are arranged so as to surround straight pipe portions of heat transfer tubes connected through bends in a serpentine arrangement. Heat transfer surfaces for transferring heat between air of the heat transfer tubes and the heat transfer fins have holes each having a radius smaller than the critical radius of a nucleus that occurs upon phase change from water vapor to condensed water droplets such that the holes are filled with the air at all times. Water is allowed to move from the holes filled with the air having low surface energy to metal part having high surface energy, thus improving drainage.
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