A tube for a heat exchanger

Abstract

The present invention relates a tube for a heat exchanger. The tube includes at least one fusible part formed on at least one coupling edge of the tube for assembling with at least one wall of the heat exchanger. Further, the fusible part is parallelly aligned with respect to a general plane (P 1 ) of the tube. The tube further includes a base portion located in the vicinity of the coupling edge and a tip portion defined in the vicinity of the wall of the heat exchanger. The tip portion of the fusible part is adapted to break by differential in expansion and contraction between the tube and the wall.

1 . A tube for a heat exchanger comprising:
 at least one fusible part formed on at least one coupling edge of the tube for assembling with at least one wall of the heat exchanger,   wherein the fusible part is parallelly aligned with respect to a general plane of the tube,   wherein the fusible part comprises a base portion located in the vicinity of the coupling edge and a tip portion located in the vicinity of the wall of the heat exchanger,   wherein the tip portion of the fusible part is adapted to be entirely separated from the wall by differential in expansion and contraction between the tube and the wall.   
     
     
         2 . The tube according to  claim 1 , further comprising: at least one notch located on the corner area of the tube between the coupling edge and base portion of the fusible part. 
     
     
         3 . The tube according to  claim 1 , wherein the tip portion of the fusible part extends beyond the coupling edge of the tube. 
     
     
         4 . The tube according to  claim 1 , wherein the fusible part is formed at the corners of the coupling edge of the tube. 
     
     
         5 . The tube according to  claim 1 , wherein the tip portion of the fusible part is narrower than the base portion to facilitate separation of the tube from the wall. 
     
     
         6 . The tube according to  claim 1 , wherein the coupling edge is formed to delimit the tube formed by two plates assembled with each other with their respective opposite faces. 
     
     
         7 . The tube according to  claim 1 , wherein the coupling edges are configured to delimit a conduit for the circulation of a heat-transfer fluid within the tube. 
     
     
         8 . The tube according to  claim 1 , wherein the fusible part is of a trapezoidal shape, wherein the width of the tip portion is smaller than of the width of the base portion. 
     
     
         9 . The tube according to  claim 8 , wherein the fusible part further comprises sloping edges connecting the tip portion with the base portion. 
     
     
         10 . The tube according to  claim 1 , wherein the fusible part is of a triangular shape. 
     
     
         11 . The tube according to  claim 1 , wherein the fusible part is half the thickness of the tube, wherein the thickness is measured in a direction perpendicular to the general plane of the tube. 
     
     
         12 . The tube according to  claim 1 , wherein the fusible part is thicker than half the thickness of the tube, wherein the thickness is measured in a direction perpendicular to the general plane of the tube. 
     
     
         13 . The tube according to  claim 1 , wherein the fusible part is thinner than half the thickness of the tube, wherein the thickness is measured in a direction perpendicular to the general plane of the tube.