Heat exchanger and method of making the same

专利名称：Heat exchanger and method of making the

same

发明人：Ramchandra L. Patel申请号：US08/304342申请日：19940912公开号：US05404942A公开日：19950411

摘要：A method of making an automotive heat exchanger comprises the steps ofassembling a heat exchanger core having a plurality of interleaved tube and fins disposedbetween a pair of endsheets and expanding the diameter of the tubes a predetermineddistance by forcing an expansion tool therethrough. The tubes of the heat exchangerinclude a plurality of internal projections of predetermined height and the expansionprocess decreases the height of the projections by less than 25% of its original height. Aheat exchanger formed in accordance with this method is also disclosed.

申请人：FORD MOTOR COMPANY

代理人：Raymond L. Coppiellie,Roger L. May

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