Heat exchanger

Abstract

The invention relates to a heat exchanger comprising a block, which has fins and pipes and which is arranged between two reservoirs, wherein each fin comprises several fin sections and each fin section is approximately V-shaped and the two flanks forming a fin section each have several air slits, which extend perpendicularly to the flow direction of a medium flowing through the fin section, wherein the two flanks of the fin section are connected by means of a first connecting surface and/or the flanks of two consecutive fin sections across from each other are connected by means of a second connecting surface, wherein the first connecting surface and/or the second connecting surface has a fin section cross-section variation element, which is directed into the intermediate space between the flanks forming a fin section and/or the flanks of two consecutive fin sections that are across from each other.

1 . A heat exchanger comprising a block which has fins and tubes and is arranged between two reservoirs, wherein each fin comprises a plurality of fin arches and each fin arch is of approximately V-like design and the two flanks forming a fin arch each have a plurality of air slits which extend transversely with respect to the flow direction of a medium flowing through the fin arch, wherein the two flanks of the fin arch are connected via a first connecting surface and/or the opposite flanks of two successive fin arches are connected via a second connecting surface, wherein the first and/or the second connecting surface have a fin arch cross section variation element which is directed into the intermediate space between the flanks forming a fin arch and/or the opposite flanks of two successive fin arches. 
     
     
         2 . A heat exchanger comprising a block which has fins and tubes and is arranged between two reservoirs, wherein each fin comprises a plurality of fin arches and each fin arch is of approximately V-like design and the two flanks forming a fin arch, each have a plurality of air slits which extend transversely with respect to the flow direction of a medium flowing through the fin arch, wherein the two flanks of the fin arch are connected via a first connecting surface and/or the opposite flanks of two successive fin arches are connected via a second connecting surface and wherein each connecting surface is opposite an open region which is formed by the two flanks which are connected by the connecting surface, wherein the extent of the open region between the two flanks is smaller than the extent of the connecting surface between the two flanks. 
     
     
         3 . The heat exchanger as claimed in  claim 1 , wherein the fin arch cross section variation element is designed as a convexity which is directed into the intermediate space between the flanks and which extends approximately parallel to the longitudinal extent of the flanks. 
     
     
         4 . The heat exchanger as claimed in  claim 1 , wherein the fin arch cross section variation element is designed as a web which is directed into the intermediate space between the flanks and which extends approximately parallel to the longitudinal extent of the flanks. 
     
     
         5 . The heat exchanger as claimed in  claim 3 , wherein the fin arch cross section variation element extends to approximately half the height of the intermediate space between the flanks. 
     
     
         6 . The heat exchanger as claimed in  claim 3 , wherein the first and/or second connecting surface having the fin arch cross section variation element is of convex design, wherein the convexity regions which enclose the fin arch cross section variation element move in an opposite direction to the fin arch cross section variation element. 
     
     
         7 . The heat exchanger as claimed in  claim 1 , wherein the fin arch cross section variation element is designed as a flap-like air-guiding element. 
     
     
         8 . The heat exchanger as claimed in  claim 7 , characterized in that wherein the flap-like air-guiding element is folded toward the intermediate space between the two flanks. 
     
     
         9 . The heat exchanger as claimed in  claim 7 , wherein an angle of folding of the flap-like air-guiding element to the connecting surface depends on the depth of the fin arch. 
     
     
         10 . The heat exchanger as claimed in  claim 7 , wherein the flap-like air-guiding element is stamped out of the connecting surface.