HEAT EXCHANGER IN WHICH CONTRACTION PART FORMED BY CLAMPING IS CONNECTED WITH SECOND CONNECTION PORT, WHEREIN SECOND CONNECTION PORT IS CONNECTED WITH PIPE IN WHICH SECOND FLUID FLOWS

摘要

PURPOSE: A heat exchanger is provided to enhance productivity of a heat exchanger and reduce the cost thereof by omitting post-processing required for connecting a pipe to a leakage detection tube. CONSTITUTION: A double pipe type heat exchanger is formed of a leakage detection tube(13a) having a leakage detection groove formed by clamping and drawing one end, and an outer pipe. A contraction part formed by the clamping is connected with a second connection port(32), wherein the second connection port is connected with a pipe in which a second fluid flows.