Heat exchanger

Abstract

The invention relates to a heat exchanger for thermally treating a vehicle cabin. The heat exchanger includes a core portion made of at least a plurality of tubes and a plurality of fins. The heat exchanger includes at least one header tank located at one end of the core portion. The header tank includes at least a collecting plate which have a U-shape, a cover plate connected to the collecting plate and at least one cap plate which is located at one longitudinal end of the header tank. The collecting plate and the cover plate are linked together by an overlapping portion and the cap plate is maintained in position within the header tank by a tongue made in continuation of the overlapping portion.

What is claimed is: 
     
         1 . A heat exchanger for thermally treating a vehicle cabin, comprising a core portion made of at least a plurality of tubes and a plurality of fins, at least one header tank located at one end of the core portion, the at least one header tank including at least a collecting plate which has a U-shape, a cover plate connected to the collecting plate and at least one cap plate which is located at one longitudinal end of the at least one header tank, the collecting plate and the at least one cover plate being linked together by an overlapping portion, wherein the collecting plate, the cover plate and the at least one cap plate are defining an internal volume of the at least one header tank that is hydraulically communicating with the core portion, the at least one cap plate being at least partially mounted inside the internal volume and maintained in position by tongue made in continuation of the overlapping portion. 
     
     
         2 . The heater exchanger according to  claim 1 , wherein the at least one plate includes an external face facing an external environment of the at least one header tank, the tongue being in contact with the external face of the at least one cap plate. 
     
     
         3 . The heat exchanger according to  claim 1 , wherein the overlapping portion and the tongue are made out of the collecting plate. 
     
     
         4 . The heat exchanger according to  claim 1 , wherein the overlapping portion and the tongue are made out of the cover plate. 
     
     
         5 . The heat exchanger according to  claim 1 , including a connecting portion that links the overlapping portion to the tongue. 
     
     
         6 . The heat exchanger according to  claim 1 , wherein at least the overlapping portion and the tongue are a curved portion. 
     
     
         7 . The heat exchanger according to  claim 1 , wherein the overlapping portion is defined by a first radius of curvature and the tongue is defined by a second radius of curvature, the second radius of curvature is being lower than the first radius of curvature. 
     
     
         8 . The heat exchanger according to  claim 1 , wherein the at least one plate includes at least one shoulder that is nested at least in the collecting plate in the cover plate. 
     
     
         9 . The heat exchanger according to  claim 8 , wherein the at least one shoulder is nested in the cover plate and that the at least one cap plate is fully located inside the internal volume of the at least one header tank. 
     
     
         10 . The heat exchanger according to  claim 1 , wherein the at least one cap plate includes at least one shoulder that is nested in the collecting plate and the at least one cap plate is fully located inside the cover plate. 
     
     
         11 . The heat exchanger according to  claim 1 , wherein the cover plate includes an internal surface facing the internal volume, an anticorrosion layer being layered against the internal surface of the cover plate. 
     
     
         12 . The heat exchanger according to  claim 1 , wherein the collecting plate includes at least one lug that extends inside the internal volume defined by the at least one header tank, the cover plate resting at least partially against the at least one lug. 
     
     
         13 . The heat exchanger according to  claim 1 , further comprising a pipe, wherein the at least one cap plate includes hole that receives the pipe. 
     
     
         14 . The heat exchanger according to  claim 1 , wherein the collecting plate includes a back wall in which at least one tube insertion hole is formed, the cover plate being located at the opposite of the back wall relative to a perpendicular line of a main back wall plan of the at least one header tank. 
     
     
         15 . (canceled) 
     
     
         16 . (canceled) 
     
     
         17 . The heat exchanger according to  claim 1 , wherein at least the overlapping portion or the tongue is a curved portion. 
     
     
         18 . The heat exchanger according to  claim 1 , wherein the at least one cap plate includes at least one shoulder that is nested at least in the collecting plate or in the cover plate.