TUBE-TYPE HEAT EXCHANGER AND METHOD FOR PRODUCING SAME

摘要

Provided are a tube-type heat exchanger wherein spiral fins (12) can be prevented from being deformed, and a method for producing the same. The tube-type heat exchanger and the method for producing the same are characterized in that the spiral fins (12) are axially arranged in parallel so that the end portions of the spiral fins (12) are spaced from each other; and retainers (3) are disposed between the spiral fins (12) and are abutted with the outer peripheries of tube elements (11).