Stacked-Plate Cooler

Abstract

The invention relates to a stacked-disc cooler for a motor vehicle comprising several discs ( 21 - 24 ) stacked on each other and connected together, in particular welded to each other, and a supply channel which passes through several discs and through which a cooling medium is introducible into the staked-disc cooler ( 1 ) and distributed on the individual discs. According to said invention, in order to obtain the improved staked-disc cooler ( 1 ), a valve device preventing the return of the cooling medium outside of the supplying channel ( 18 ) is mounted therein.

1 . A stacked-plate cooler for motor vehicles, having a plurality of plates which are stacked one on top of the other and are connected, in particular soldered, to one another, and having a supply duct which runs through a plurality of plates and through which the medium to be cooled is supplied to the stacked-plate cooler and is distributed to individual plates, wherein a valve device is installed in the supply duct, which valve device prevents a return flow of the medium to be cooled out of the supply duct. 
   
   
       2 . The stacked-plate cooler as claimed in  claim 1 , wherein the valve device is formed by a non-return valve device which comprises a valve body which is held in contact against a valve seat by a valve spring device. 
   
   
       3 . The stacked-plate cooler as claimed in  claim 2 , wherein the supply duct is delimited by a cover panel against which the valve spring device is supported. 
   
   
       4 . The stacked-plate cooler as claimed in  claim 3 , wherein the valve spring device comprises a pre-stressed coil pressure spring which is held in the supply duct. 
   
   
       5 . The stacked-plate cooler as claimed in  claim 2 , wherein the valve body comprises a closing body, with the outer contour of the closing body in a plane perpendicular to the movement direction of the closing body substantially corresponding to the free cross section of the supply duct, with it being possible for the closing body to he held by the supply duct. 
   
   
       6 . The stacked-plate cooler as claimed in  claim 2 , wherein the valve body comprises a substantially circular-plate-shaped closing body whose outer diameter is smaller than the inner diameter of the supply duct. 
   
   
       7 . The stacked-plate cooler as claimed in  claim 5 , wherein the closing body has, on the end side facing away from the valve spring device, an annular groove into which an O-ring is inserted. 
   
   
       8 . The stacked-plate cooler as claimed in  claim 5 , wherein a plurality of connecting webs proceed from that end side of the closing body which faces toward the valve spring device, which connecting webs connect the closing body to a guide ring. 
   
   
       9 . The stacked-plate cooler as claimed in  claim 3 , wherein the stacked plates are arranged between the cover panel and a base panel which has, as a continuation of the supply duct, a passage hole whose inner diameter is larger than the outer diameter of the valve body and than the outer diameter of the valve spring device. 
   
   
       10 . The stacked-plate cooler as claimed in  claim 9 , wherein a closure ring is arranged in the passage hole in the base panel, on which closure ring is provided the valve seat for the valve body. 
   
   
       11 . The stacked-plate cooler as claimed in  claim 10 , wherein a sealing face or sealing edge is formed on the closure ring. 
   
   
       12 . The stacked-plate cooler as claimed in  claim 1 , wherein the cooler is an oil cooler, the medium to be cooled is oil, and the supply duct is an oil supply duct.