| 摘要 |
PCT No. PCT/SE79/00153 Sec. 371 Date Mar. 12, 1980 Sec. 102(e) Date Mar. 12, 1980 PCT Filed Jul. 11, 1979 PCT Pub. No. WO80/00228 PCT Pub. Date Feb. 21, 1980.A method and apparatus for manufacturing heat exchangers for cooling and heating purposes from substantially rectangular tube elements alternating with surface-enlarging members in the form of thin pleated metal strips being advanced, pressed against each other, through a heating zone for soldering together and thereafter discharged through a cooling zone for cooling the solder to fusion temperature, the advancing movement being opposed by a constant retarding force means acting in a direction counter to the direction of advance. |
