Heat exchanger configured to accelerate discharge of liquid refrigerant from lowest heat exchange section
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United States of America Patent
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Dec 19, 2017
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N/A
app pub date -
Apr 25, 2013
filing date -
Apr 27, 2012
priority date (Note) -
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Abstract
A heat exchanger includes a plurality of principal heat exchange sections and auxiliary heat exchange sections. Each of the auxiliary heat exchange sections is in series connection to a corresponding one of the principal heat exchange sections. The number of the flat tubes constituting each of the heat exchange sections is compared to the number of the flat tubes constituting a corresponding one of the auxiliary heat exchange sections, creating a tube number ratio, wherein the first principal heat exchange section, which is lowermost, has the smallest tube number ratio. Consequently, discharge of liquid refrigerant from a lower portion of the first principal heat exchange section is accelerated during defrosting, thereby shortening the time required for defrosting.
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