High-performance and high-efficiency rolled fin tube and forming disk therefor

Abstract

Disclosed herein is a forming disk for fabricating a formed fin of a fin tube. The forming disk is formed of a circular plate having a shaft connection hole penetratingly formed at the center thereof for being connected to a shaft of a form rolling machine. A projection having a certain length is formed along the circumference thereof at certain regular angular intervals in such a way as to be protruded in a radial direction, and a round curvature is formed in the formed fin at certain axial pitch periodically in a radial direction. Also disclosed is a high-performance and high-efficiency fin tube. The formed fin is formed of a generally circular plate, and a crest and a valley are formed in both side faces at certain angular intervals along the circumference thereof so as to form a continuous curvature.

1 . A forming disk for fabricating a formed fin of a fin tube using a common type form rolling machine, the fin tube being applied to a heat exchanger, 
 wherein the forming disk is formed of a circular plate having a shaft connection hole penetratingly formed at the center thereof for being connected to a shaft of the form rolling machine, a plurality of projections having a certain length formed along the circumference thereof at certain regular angular intervals in such a way as to be outwardly protruded in a radial direction, and a round curvature formed in the formed fin at certain axial pitch periodically in a radial direction.    
   
   
       2 . The forming disk according to  claim 1 , wherein the projections are disposed in such a way that a pair of projections are positioned in an alternate pattern.  
   
   
       3 . The forming disk according to  claim 1 , wherein the pair of projections have a lowest height at the outermost portion of the forming disk, and their heights increase gradually toward the inside thereof.  
   
   
       4 . The forming disk according to  claim 3 , wherein the projections are disposed in such a way that a pair of projections are positioned in an alternate pattern.  
   
   
       5 . The forming disk according to  claim 1 , wherein the forming disk is formed of two pieces, which are separately fabricated and combined.  
   
   
       6 . A high-performance and high-efficiency fin tube including a tube and a formed fin formed at the outer peripheral surface of the tube, 
 wherein the formed fin is formed of a generally circular plate, and has a crest and a valley formed on both side faces at certain angular intervals along the circumference thereof so as to form a continuous curvature.    
   
   
       7 . The fin tube according to  claim 6 , wherein the height and depth of the crest and the valley are symmetrically constructed.  
   
   
       8 . The fin tube according to  claim 6 , wherein the crest and the valley are formed in such a manner that it is formed starting from a certain position apart from the outer peripheral surface of the tube and has a maximum height and depth at the outermost thereof.  
   
   
       9 . The fin tube according to  claim 6 , wherein the crest and the valley is formed in an obtuse arcuate shape.