发明名称 Finned tube with indented groove base and method of forming same
摘要 A tube for heat transfer systems or the like is provided which includes helically or circumferentially disposed, radially extending ribs or fins. The base of the grooves defined between adjacent fins has a plurality of discrete impressions defined therein. The provision of discrete impressions in the groove base improves the heat transfer characteristics of the tube by greatly increasing the outer surface area of the tube relative to the inner surface area of the tube.
申请公布号 US4796693(A) 申请公布日期 1989.01.10
申请号 US19860921194 申请日期 1986.10.21
申请人 WIELAND-WERKE AG 发明人 KASTNER, HANS-WERNER;KLOECKLER, ROBERT;HAGE, MANFRED
分类号 B21C37/20;B21D15/04;F28F1/36;F28F13/18;(IPC1-7):F28F1/42 主分类号 B21C37/20
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