Plate Heat Exchanger

Abstract

The invention relates to a plate heat exchanger for a motor vehicle, comprising conducting devices ( 3, 4 ) in the form of elongate disks which are stacked on top of each other and soldered together. The disks are composed of two elongate half disks ( 41 ) that form a hollow space for conducting a medium therethrough. Each end of each half disk ( 41 ) is provided with a first through-hole ( 48; 49 ) for feeding or discharging the medium, each through-hole ( 48; 49 ) being disposed between two other through-holes ( 55, 56; 60, 61 ). In order to create a plate heat exchanger that has a simple design and can be produced at a low cost, an edge region ( 57, 58; 62, 63 ) of the other through-holes ( 55, 56; 60, 61 ) is embodied in a raised manner and is substantially provided with the shape of a pot encompassing a bottom in which the associated through-hole is recessed.

1 - 12 . (canceled)  
   
   
       13 . A stacked plate heat exchanger, especially for a motor vehicle, with several conduit devices ( 3 ,  4 ), especially flat pipes, stacked one on top of the other and connected to each other, especially brazed, in the form of elongated plates that are each assembled from two elongated plate halves ( 41 ) forming a hollow space for passage of a medium and each having at their ends a first through hole ( 48 ;  49 ) for feeding or discharging the medium, wherein the through hole ( 48 ;  49 ), viewed in the transverse direction of the plate halves ( 41 ), is arranged between two additional through holes ( 55 ,  56 ;  60 ,  61 ), characterized in that the edge area ( 57 ,  58 ;  62 ,  63 ) of the additional through holes ( 55 ,  56 ;  60 ,  61 ) is raised and has essentially the shape of a pot with a base in which the associated through hole is opened.  
   
   
       14 . The stacked plate heat exchanger according to  claim 13 , characterized in that the edge area ( 50 ,  51  ) of the first through hole ( 48 ;  59 ) is raised and has essentially the shape of a pot with a base in which the associated through hole is opened.  
   
   
       15 . The stacked plate heat exchanger according to  claim 14 , characterized in that the raised edge areas ( 57 ,  58 ) of the additional through holes ( 55 ,  56 ) and the raised edge area ( 50 ) of the first through hole ( 48 ) and especially a peripheral edge ( 53 ) by means of which one plate half can be assembled with a corresponding plate half, are located essentially at the same level.  
   
   
       16 . The stacked plate heat exchanger according to  claim 15 , characterized in that the raised edge area ( 50 ) of the first through hole ( 48 ) is delimited at the end of the appropriate plate half ( 41 ) with a meander shape.  
   
   
       17 . The stacked plate heat exchanger according to  claim 16 , characterized in that the conduit devices ( 3 ,  4 ) are stacked between a base plate ( 8 ) and a cover plate ( 9 ).  
   
   
       18 . The stacked plate heat exchanger according to  claim 17 , characterized in that the base plate ( 8 ) has four through holes ( 21 ,  22 ), which align with the additional through holes ( 55 ,  56 ;  60 ,  61 ) in the conduit devices ( 3 ,  4 ) and are used for the passage of attachment means ( 11 - 14 ) whose dimensions are somewhat smaller than the diameters of the additional through holes.  
   
   
       19 . The stacked plate heat exchanger according to  claim 17 , characterized in that the base plate ( 8 ) and the cover plate ( 9 ) each have four through holes ( 21 ,  22 ;  38 ,  39 ) which align with the additional through holes ( 25 ,  26 ) in the conduit devices and which are used for the passage of attachment means ( 31 ,  34 ) whose dimensions are somewhat smaller than the diameters of the additional through holes.  
   
   
       20 . The stacked plate heat exchanger according to  claim 13 , characterized in that the conduit devices ( 3 ,  4 ) are each assembled from two, in particular identical plate halves ( 41 ) rotated by 180° relative to each other, each of which has a plurality of grooves ( 52 ) that extend in particular in a straight line from one longitudinal side ( 42 ) to the opposite longitudinal side ( 43 ) of the plate half ( 41 ).  
   
   
       21 . The stacked plate heat exchanger according to  claim 20 , characterized in that the grooves ( 52 ) are stamped into one side of each plate half.  
   
   
       22 . The stacked plate heat exchanger according to  claim 21 , characterized in that the grooves ( 52 ) are delimited at the longitudinal sides by a peripheral edge ( 53 ).  
   
   
       23 . The stacked plate heat exchanger according to  claim 22 , characterized in that a plate ( 3 ,  4 ) is formed by two plate halves ( 41 ) contacting each other whose grooves ( 52 ) are embossed outward.  
   
   
       24 . The stacked plate heat exchanger according to  claim 23 , characterized in that two plates ( 3 ,  4 ) contact each other and are brazed to each other with their grooves ( 52 ) and/or raised areas ( 50 ,  57 ,  58 ).