| 摘要 |
PURPOSE:To prevent deformation of a fin and to reduce the cost by so forming a slit as to allow one end of the bent part of the fin to separably remain and to allow the other end to remain as a hinge. CONSTITUTION:A slit 21 formed at the bent part 14 of a fin 11 is so formed as to allow the lateral one end 11a of the fin 11 to vertically separably remain in a predetermined width and to allow the other lateral end 11b to remain in a predetermined width as a hinge 22 for bending the fin 11. The slit 21 is also formed of an acute groove 21a sequentially reduced in the diameter of an opening at the remaining one end 11a side, and formed of a circular-arclike groove 21b at the remaining other end, i.e., the hinge 22 side. Thus, the strength of the fin 22 is enhanced, deformation of the fin is prevented at the time of conveying or supporting a refrigerant tube 12 therethrough and the cost is reduced. |
