Title:
FORMING DISK FOR FORM-ROLLED FIN TUBE, AND FIN TUBE OF HIGH PERFORMANCE AND HIGH EFFICIENCY USING THE SAME
Document Type and Number:
Japanese Patent JP3854978
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a forming disk which is used to perform form rolling of a heat exchange fin tube by a method for increasing the heat transfer coefficient by changing the shape of a fin and for enhancing the heat transfer coefficient by flexing the surface of a flat form-rolled fin, and a fin tube of high performance and high efficiency using the forming disk.
SOLUTION: The forming disk is disk-shaped, and has a shaft connection hole penetrated at the center to be connected to a shaft of a form rolling machine. Projections having a predetermined length in the radial direction at a predetermined angle on the circumference are included on both side faces, and a circular flex is formed on a formed fin radially at the predetermined period with a predetermined pitch in the axial direction.
Inventors:
Ren Hoho
Application Number:
JP2004202657A
Publication Date:
December 06, 2006
Filing Date:
July 09, 2004
Export Citation:
Assignee:
Fintube Technology Company Limited
International Classes:
B21H7/14; F28F1/36; B21C37/20; F28F1/32; (IPC1-7): B21H7/14; B21C37/20; F28F1/36
Domestic Patent References:
| JP55073185U |
Attorney, Agent or Firm:
Shoji Suzue
Toshiyuki Kimura
Toshiyuki Kimura
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