PURPOSE: To improve the thermal efficiency of the pipe on sheet type heat exchanger and to reduce its manufacturing cost by continuously bending the pipe of specific thickness ratio with the specific ratio and flatting the sheet part.
CONSTITUTION: On the pipe on sheet type heat exchanger which consists of the continuously bent copper pipe 1 fixed to the sheet 2, the copper pipe 1 of D/t≥15 (D; outer diameter, t; thickness) is subjected to continuously bending work of R/D (R: bending radius of center line) and the contact part 1a of the copper pipe 1 with the sheet 2 is pressed flat and the copper pipe is fixed at the flat part 1a with adhesive agent 3 on the sheet 2. Therefore, the pipe on sheet for the heat exchanger of good heat conductivity is possible to be manufactured.
IKENAGA EIICHI
YABU YOSHINORI
MAGOTANI FUJIO
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