| 摘要 |
PROBLEM TO BE SOLVED: To realize the mutually appropriate corresponding relation between fin joint surfaces and recessed groove parts for forming heat exchanger tubes in small-diameter heat exchanger tube units of laminated structure constituting a small-diameter multitubular heat exchanger. SOLUTION: In the small-diameter heat exchanger tube units 4 of laminated structure constituting the small-diameter multitubular heat exchanger 1, engaging parts 46a, 46b engaged in an coaxial direction are formed in a plurality of mutually corresponding positions of fin plates 4A, 4B to be laminated. With this constitution the mutually appropriate corresponding relation between the fin joint surfaces and recessed groove parts for forming heat exchanger tube body parts 41 when laminated can be easily realized by engaging the engaging parts 46a, 46b provided in the plurality of mutually corresponding positions (outer peripheral edge parts or the like) of the fin plates 4A, 4B to be laminated. COPYRIGHT: (C)2006,JPO&NCIPI
|
