公开(公告)号：US20200173740A1

公开(公告)日：2020-06-04

申请号：US16614059

申请日：2017-05-25

Applicant: SP TECH CO.,LTD

Inventor： Hee Sik SOHN

IPC: F28F21/08 ,  F28F19/00 ,  C22C21/10 ,  C22F1/053 ,  C23C2/06

Abstract: Disclosed is a technology for improving corrosion resistance of aluminum tubes, aluminum fins, and aluminum headers of a heat exchanger. The heat exchanger includes one or more tubes made of aluminum alloy, one or more headers made of aluminum alloy, one or more brazing header clads, one or more fins (or heat sinks) made of aluminum alloy, and one or more brazing fin clads. The corrosion potential of the tube ranges from −950 mV to −650 mV, the corrosion potential of the header has a difference of 0 mV to 150 mV with respect to the corrosion potential of the tube, and the corrosion potential of the header clad has a difference of −20 mV to 100 mV with respect to the corrosion potential of the tube.