| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a plate fin tube heat exchanger and its manufacturing method causing neither failure in appearance, nor degradation of heat exchange performance by positively preventing fin pitch disorder, nor a pairing phenomenon caused by the enlargement of a tube. <P>SOLUTION: The plate fin tube heat exchanger comprises a large number of laminated plate fins 3 forming fin collars 5 around a tube hole 4 inserted through the tube 2, and the tube 2 inserted through the tube hole 4 and enlarged to stick to each plate fin 3. Each plate fin 3 is formed in umbrella shape enlarged from the tube hole 4 toward the formed side of the fin collar 5, and a slant face of the umbrella shape inclines by 8-30°with respect to a plane perpendicular to the tube 2. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
