Title:
MANUFACTURING METHOD AND MANUFACTURING DEVICE FOR SPIRAL FIN TYPE HEAT EXCHANGER
Document Type and Number:
Japanese Patent JP2014184479
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To manufacture a spiral-fin type heat exchanger having a fin spirally wound around an outer circumference of a tube with high adhesiveness between the tube and the fin, to ensure a uniform fin pitch, and to realize high heat exchange efficiency.SOLUTION: A tube 21 is supported on a ground electrode 42, and a fin 22 is guided at a preset helical angle between the ground electrode 42 and a disc-like feeder electrode 41 arranged above the ground electrode 42 from a fin receiving groove. A fin main body is held between the feeder electrode 41 and a fin guide, a fin base portion inserted between the feeder electrode 41 and the tube 21 is pressed by the feeder electrode 41, the fin 22 is wound while being R-molded by causing the tube 21 to move forward while rotating, and the fin 22 is welded by applying current between the two electrodes 41 and 42.
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Inventors:
ITO YOSHIFUMI
INOMATA NORIYASU
MUKOHARA YUKI
INOMATA NORIYASU
MUKOHARA YUKI
Application Number:
JP2013062755A
Publication Date:
October 02, 2014
Filing Date:
March 25, 2013
Export Citation:
Assignee:
DENSO CORP
International Classes:
B21D53/06; B23K11/06; F28F1/36
Domestic Patent References:
| JPS59232617A | 1984-12-27 | |||
| JPS6199586A | 1986-05-17 |
Attorney, Agent or Firm:
Kyuma Ito