Corrugated-fin type radiator

Abstract

Disclosed is a corrugated-fin type radiator ( 1 ), which comprises corrugated fins ( 10 ), and a support substrate ( 20 ) having a plurality of fixing grooves ( 23 ) defined by side walls ( 24 ) and a bottom ( 25 ). The bottom ( 25 ) has a ridge ( 26 ) at least in its portion, and the side walls ( 24 ) are formed of a vertical wall ( 24 a ), a tapered wall ( 24 b ) and a corner ( 24 c ). A fin fixing portion ( 14 ) is fixed along the side walls ( 24 ) and the bottom ( 25 ) of the fixing grooves ( 23 ). Also disclosed is a method for manufacturing the corrugated-fin type radiator ( 1 ), which comprises a substrate manufacturing step, a fin shaping step and a fixing step. Thus, it is possible to provide the corrugated-fin type radiator capable of improving a radiation efficiency, and a method for manufacturing the radiator.

1 . A corrugated-fin type radiator, comprising:
 corrugated fins that radiate heat; and   a support substrate having a plurality of fixing grooves including side walls and a bottom for fixing a part of the corrugated fins;   wherein the bottom has a ridge on at least a part thereof, which is higher than the bottom and is formed in parallel to the bottom,   and the side walls have vertical walls extending downward from the support substrate in a vertical direction, tapered walls extending from the vertical walls toward the bottom with increase in a distance between the tapered walls, and corners having a curved surface formed contiguously from the tapered walls to the bottom,   and wherein a part of the corrugated fin is fixed along the shape of the side wall and the bottom of the fixing groove.   
     
     
         2 . The corrugated-fin type radiator according to  claim 1 , wherein:
 a length of the vertical wall is greater than or equal to one sixth and smaller than or equal to one half of a length of the side wall.   
     
     
         3 . The corrugated-fin type radiator according to  claim 1 , wherein:
 a height of the ridge is greater than or equal to one tenth and smaller than or equal to two thirds of a height of the fixing groove, a width of a lower end portion of the ridge is greater than or equal to one tenth and smaller than or equal to five sixths of a width of the fixing groove, a width of a upper end portion of the ridge is greater than or equal to one eighth and smaller than or equal to four fifths of a width of the lower end portion of the ridge, and a width of the upper end portion is smaller than or equal to the width of the lower end portion.   
     
     
         4 . The corrugated-fin type radiator according to  claim 1 , wherein:
 a radius of the corner is greater than or equal to one sixteenth and smaller than or equal to one third of a width of the fixing groove.   
     
     
         5 . The corrugated-fin type radiator according to  claim 3 , wherein:
 a radius of the corner is greater than or equal to one sixteenth and smaller than or equal to one third of a width of the fixing groove.   
     
     
         6 . A method of producing the corrugated-fin type radiator of  claim 1 , comprising:
 a substrate manufacturing step of extruding or cutting the support substrate, forming the plurality of fixing grooves which is formed of, the side wall having the tapered wall and the corner, and of the bottom, and forming the ridge on the bottom;   a fin shaping step of producing a corrugated fin by folding a metal plate to form a plurality of fin bottoms which form a lower end of the corrugated fin and are substantially parallel to the support substrate, a plurality of fin top portions which form an upper end of the corrugated fin and are substantially parallel to the support substrate, and a plurality of jointing portions which joint the fin bottom and the fin top portion and which are substantially perpendicular to the support substrate, so that the fin bottoms and the fin top portions are arranged one after the other, and so that the distance between external walls of the neighboring jointing portions is approximately equal or somewhat smaller than the opening width of the fixing groove; and   a fixing step of fixing the corrugated fin on the support substrate by, inserting the fin fixing portion, which is formed of the fin bottom and a lower end of the jointing portion, into the fixing groove from the opening, fitting the fin fixing portion onto the ridge, and pressing the fin bottom toward the ridge from the gap of the jointing portion using the top of a press tool having a concave portion on top thereof, and deforming the fin fixing portion along the shape of the fixing groove, thereby the corrugated fin being fixed on the support substrate.