Heat exchanger
AssigneeHitachi, Ltd.
InventorsNaoki Shikazono, Masaaki Itoh, Mari Uchida, Toshihiko Fukushima
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Abstract
A heat exchanger, in which a plurality of fins formed on either an internal or an external face of a heat transfer tube, wherein each of the plurality of fins has a first portion including a fin top and a second portion including a fin root, and wherein the first portion has a ridgeline formed in a raised and recessed shape, or in a wave-like or corrugated shape, and the second portion has a substantially straight outline in a fin longitudinal direction in a cross section parallel to either the internal or the external face on which the plurality of fins are formed.
Claims5
A heat exchanger, in which a plurality of fins formed on an internal face of a heat transfer tube, wherein each of said plurality of fins has a first portion including a fin top and a second portion including a fin root, and wherein said first portion has a ridgeline formed in a raised and recessed shape, or in a wave-like or corrugated shape, and said second portion has a substantially straight outline in a fin longitudinal direction in a cross section parallel to said internal face on which said plurality of fins are formed.
Dependencies are inferred from the claim text.