| 摘要 |
PURPOSE: A manufacturing method of turn-fin condensers is provided to enhance heat exchange efficiencies by smoothing airflow of inner and external sides. CONSTITUTION: A manufacturing method of turn-fin condensers comprises a turn pin conclusion step which reels a turn pin(114) on an outer periphery of a refrigerant pipe(112) in spiral form, a compression step which squishes an ending part of the turn pin, a tube inserting step which inserts a tightening tube into a part in which the turn pin is compressed, and a heat-up step which shrinks the tightening tube by applying heat to the tightening tube. The refrigerant pipe comprises pipes in which refrigerant is flowed inside, and the condenser has predetermined volume by being bent plurality of times. At both ends of the turn pin reeled around the refrigerant pipe, the tightening tube is inserted. In the turn pin reeled around the refrigerant pipe, the tightening tube is formed at the end portion of the turn pin. The tightening tube is formed to have elasticity and helps the end portion of the turn pin to be closely fixed to the refrigerant pipe. The tightening tube is comprised of polyolefin which is shrunk by heat. |
