Heat exchanger tube

Abstract

Disclosed is a heat exchanger tube for transferring heat due to combustion of a combustor toward an exterior, the heat exchanger tube comprising: an insertion body which is configured by folding up three or more sectors made of aluminum through extrusion molding; and an accommodation body which is configured to accommodate the insertion body so that an inner circumferential surface can be in contact with an outer circumferential surface of the insertion body, thereby maximizing a surface area and improving an efficiency of transferring heat.

I claim: 
     
         1 . A heat exchanger tube for transferring heat due to combustion of a combustor toward an exterior, the heat exchanger tube comprising:
 an insertion body which is configured by folding up three or more sectors made of aluminum through extrusion molding; and   an accommodation body which is configured to accommodate the insertion body so that an inner circumferential surface can be in contact with an outer circumferential surface of the insertion body.   
     
     
         2 . The heat exchanger tube according to  claim 1 , wherein the insertion body comprises three sectors each having a central angle of 120°. 
     
     
         3 . The heat exchanger tube according to  claim 1 , wherein the insertion body comprises four sectors each having a central angle of 90°. 
     
     
         4 . The heat exchanger tube according to  claim 1 , wherein the insertion body comprises a middle sector positioned in a middle, and a left sector and a right sector respectively positioned at left and right sides with respect to the middle sector. 
     
     
         5 . The heat exchanger tube according to  claim 1 , wherein the insertion body comprises a plurality of ribs standing on an inner circumferential surface thereof, and a plurality of projections formed on a surface of the rib. 
     
     
         6 . The heat exchanger tube according to  claim 2 , wherein the insertion body comprises a plurality of ribs standing on an inner circumferential surface thereof, and a plurality of projections formed on a surface of the rib. 
     
     
         7 . The heat exchanger tube according to  claim 3 , wherein the insertion body comprises a plurality of ribs standing on an inner circumferential surface thereof, and a plurality of projections formed on a surface of the rib. 
     
     
         8 . The heat exchanger tube according to  claim 4 , wherein the insertion body comprises a plurality of ribs standing on an inner circumferential surface thereof, and a plurality of projections formed on a surface of the rib. 
     
     
         9 . The heat exchanger tube according to  claim 1 , wherein a plurality of sectors that constitute the insertion body are connected to form a single body through extrusion molding.