Heat Exchanger

Abstract

The invention relates to a heat exchanger and a rib ( 1 ), in particular a corrugated rib ( 1 ), especially for a flat tube heat exchanger, in particular a coolant or charge-air cooler for motor vehicles. The corrugated rib ( 1 ) is arranged between flat tubes ( 3 ) of the heat exchanger, is connected thereto in a material fit, comprises gills ( 6, 8 ), can be exposed to a flow of air and comprises moulded reinforement means.

1 . A fin, in particular corrugated fin, in particular for a flat tube heat exchanger, in particular a coolant or charge-air cooler for motor vehicles, the fin being arranged between flat tubes of the heat exchanger or being arranged perpendicularly to them and being connected to them with a cohesive material joint or mechanically, being provided with gills and being able to be flowed over by air and having molded stiffening means, characterized in that the stiffening means are integrated in the gills. 
   
   
       2 . The fin as claimed in  claim 1 , wherein the gills have a buckle-proof profile which deviates from a straight line or a rectangular profile. 
   
   
       3 . The fin as claimed in  claim 2 , wherein the profile has an S-shaped cross section with two rounded portions. 
   
   
       4 . The fin as claimed in  claim 2 , wherein the profile has a cross section which is bent twice, three times or multiple times, for example an approximately Z-shaped cross section. 
   
   
       5 . The fin as claimed in  claim 2 , wherein the profile has an approximately V-shaped cross section which is bent once. 
   
   
       6 . The fin as claimed in claim, wherein cross section has an incident-flow region and a flow-off region and a deflecting region arranged between them, the incident-flow region and flow-off region respectively having an incident-flow angle and flow-off angle (αs, αz) of approximately the same size, and the deflecting region having a deflecting angle (βs, βz), in that the deflection angle is greater than the incident-flow angle and flow-off angle, i.e. βs>αs and βz αz. 
   
   
       7 . The fin as claimed in  claim 1  wherein the following ranges apply for the angles αs and βs:
 0 αs≦10 degrees, and   15 βs≦35 degrees.   
   
   
       8 . The fin as claimed in  claim 1  wherein the following ranges apply for the angles αs and βs:
 0 αs≦5 degrees, and   20 βs≦30 degrees.   
   
   
       9 . The fin as claimed in  claim 1  wherein the following ranges apply for the angles αz and βz: