Heat exchanger core and heat exchanger equipped therewith

Abstract

A heat exchanger network has at least one passage for a coolant and a heat exchanger provided with such a core. The coolant passage has a plurality of flow channels which are disposed in parallel and delimited by separating walls and connected to each other in an undulating shape at their ends by deflection zones. The flow channels are formed by at least one lamella which has separating walls and a meandering cross-section. The deflection zones are formed by recesses which are provided at the ends of the separating walls.

1 . Heat exchanger core comprising at least two plates and a passage disposed between said plates for a coolant, said passage containing a plurality of flow channels which are disposed in parallel and are delimited laterally by separating walls, said separating walls being disposed perpendicular to the plates, having respectively two ends, and being connected to each other in an undulating shape by deflection zones which are provided alternately at one or an other of said ends of said separating walls, wherein said coolant passage is formed by at least one lamella which is connected to said plates, has a meandering cross-section and contains said separating walls, and wherein said deflection zones comprise recesses which are provided at said ends of said separating walls.  
   
   
       2 . Heat exchanger core according to  claim 1 , wherein said coolant passage is assembled from a plurality of lamellae which are situated next to each other, each lamellae having a plurality of separating walls.  
   
   
       3 . Heat exchanger core according to  claim 2 , wherein said separating walls are held in preselected distances by means of webs which are alternatingly connected therewith above and below.  
   
   
       4 . Heat exchanger core according to  claim 2;  and further comprising at least one lamella which ends at at least one lateral side with a web projecting outwards from one of the separating walls which is an end separating wall.  
   
   
       5 . Heat exchanger core according to  claim 2;  and further comprising at least one lamella which ends at two lateral sides with a web projecting outwards from one of the separating walls which is respective end separating wall.  
   
   
       6 . Heat exchanger core according to  claim 5 , wherein one web is connected with a respective separating wall at a top end thereof whereas another web is connected with a respective separating wall at a bottom end thereof.  
   
   
       7 . Heat exchanger core according to  claim 2 , wherein said lamellae consist of extruded parts.  
   
   
       8 . Heat exchanger core according to  claim 2 , wherein each of said lamellae are composed of a material selected from the group consisting of aluminium and an aluminium alloy.  
   
   
       9 . Heat exchanger core according to  claim 2 , wherein said lamellae are situated next to each other in such a manner that separating walls facing each other are spaced at spacings which correspond to a width of a flow channel.  
   
   
       10 . Heat exchanger core according to  claim 1 , wherein said lamellae and said plates are connected to each other by soldering connecting means.  
   
   
       11 . Heat exchanger core according to  claim 1 , wherein open ends of adjacent flow channels and, with these, also assigned deflection zones are sealed by respective profiles which are connected to an outer side of said lamellae.  
   
   
       12 . Heat exchanger core according to  claim 1 , wherein open ends of adjacent flow channels and, with these, also assigned deflection zones are sealed by common plates which are connected to outer sides of said lamellae.  
   
   
       13 . Heat exchanger core according to  claim 11 , wherein said profiles are connected to said lamellae by welding connecting means.  
   
   
       14 . Heat exchanger core according to  claim 12 , wherein said plates are connected to said lamellae by welding connecting means.  
   
   
       15 . Heat exchanger core according to claims  1 , wherein said recesses are configured as recesses obtained by milling.  
   
   
       16 . Heat exchanger core according to  claim 1;  and further comprising a plurality of coolant passages which are disposed one above the other and air passages which are disposed between said coolant passages.  
   
   
       17 . Heat exchanger core according to  claim 1;  and being configured as part of a combined coolant/air heat exchanger block.  
   
   
       18 . Heat exchanger core according to  claim 17 , wherein said plates have two portions, one portions forming a coolant/air heat exchanger core and the other portion forming an air/air heat exchanger core.  
   
   
       19 . Coolant/air heat exchanger, comprising a heat exchanger core including at least two plates and a passage disposed between said plates for a coolant, said passage containing a plurality of flow channels which are disposed in parallel and are delimited laterally by separating walls, said separating walls being disposed perpendicular to the plates, having respectively two ends, and being connected to each other in an undulating shape by deflection zones which are provided alternately at one or an other of said ends of said separating walls, wherein said coolant passage is formed by at least one lamella which is connected to said plates, has a meandering cross-section and contains said separating walls, and wherein said deflection zones comprise recesses which are provided at said ends of said separating walls.  
   
   
       20 . Heat exchanger according to  claim 19;  and being configured as a combined coolant/air and air/air heat exchanger in.