HEAT EXCHANGER FINS AND METHOD FOR FABRICATING FINS PARTICULARLY SUITABLE FOR STIRLING ENGINES

摘要

Heat exchanger fins and a method for fabricating fins particularly suitable for the head of Stirling engine. The fins have a frusto-conical contour and surround and are brazed to the heater head at axially spaced positions. The inner edges of the fins are rolled to provide a flange for engaging and being joined to the head and have axially aligned, radial slots cut into the outer edge to provide channels for the passage of the products of heater combustion. The fins can be formed of annular rings or from a ribbon bent into a helix.