FOLDED TUBE FOR HEAT EXCHANGER AND METHOD FOR MAKING THE SAME

摘要

PURPOSE: A folded tube for heat exchanger and method for making the same is provided which reduces the radius of a shoulder portion of an outer web and the size of a web shoulder portion, and increases the heat transfer rate of a heat exchanger. CONSTITUTION: A folded tube(12) and method of making the same for a heat exchanger(10) includes a base(24), a top(26) spaced from and opposing the base, a first side(28) interposed between the base and the top along one side thereof, and a second side(30) interposed between the base and the top along another side thereof. The folded tube(12) includes at least one of the base and the top having at least one internal web(40) having an initial web width and initial outside shoulder radius and being compressed to compress the at least one internal web to a final web width less than the initial web width and a final outside shoulder radius less than the initial outside shoulder radius and defining a plurality of fluid ports(42).