Stacked plate heat exchanger

Abstract

A stacked-plate heat exchanger may include a high temperature coolant circuit having a first coolant flow therethrough, and a low-temperature coolant circuit having a second coolant flow therethrough, the first and second coolants having different temperature levels. The heat exchanger may also have heat exchanger plates stacked one on another, the first and second coolants flowing through the heat exchanger plates on one side, and a medium to be cooled flowing through the heat exchanger plates on another side. The heat exchanger plates may have an embossed partition separating the high-temperature coolant circuit and the low-temperature coolant circuit.

1 . A stacked-plate heat exchanger, comprising:
 a high-temperature coolant circuit having a first coolant flow therethrough, and a low-temperature coolant circuit having a second coolant flow therethrough, the first coolant and the second coolant having different temperature levels;   heat exchanger plates stacked one on another, the first and second coolants flowing through the heat exchanger plates on one side and a medium to be cooled flowing through the heat exchanger plates on another side;   wherein the heat exchanger plates have an embossed partition separating the high-temperature coolant circuit and the low-temperature coolant circuit.   
     
     
         2 . The stacked-plate heat exchanger according to  claim 1 , wherein the stacked-plate heat exchanger is configured as a counterflow cooler. 
     
     
         3 . The stacked-plate heat exchanger according to  claim 1 , wherein the heat exchanger plates each has a circumferentially positioned edge via which each heat exchanger plate is soldered to an adjacent heat exchanger plate, wherein the partition is connected to each edge on a longitudinal end side. 
     
     
         4 . The stacked-plate heat exchanger according to  claim 3 , wherein the partition meets the edge of each heat exchanger plate one of orthogonally or at an acute angle. 
     
     
         5 . The stacked-plate heat exchanger according to  claim 3 , wherein each heat exchanger plate has one of at least one coolant inlet and at least one coolant outlet is arranged in an area of a connection of the partition to the edge of the heat exchanger plate. 
     
     
         6 . The stacked-plate heat exchanger according to  claim 5 , wherein at least one of the at least one coolant inlet and the at least one coolant outlet has a triangular cross-section with a side aligned parallel to the partition and a leg aligned parallel to the edge. 
     
     
         7 . The stacked-plate heat exchanger according to  claim 6 , wherein one of:
 the side is one of longer or shorter than the leg; or   the side and the leg are the same length.   
     
     
         8 . The stacked-plate heat exchanger according to  claim 5 , wherein the edge of each heat exchanger plate is outwardly curved in an area of the partition, and at least one of the coolant inlet and the coolant outlet has an approximately circular-segment-like cross-section. 
     
     
         9 . The stacked-plate heat exchanger according to  claim 1 , wherein the medium to be cooled flows through the heat exchanger plates in one of a U shape, a Z shape or a double U shape. 
     
     
         10 . The stacked-plate heat exchanger according to  claim 1 , wherein at least one of:
 the first coolant flows through the high-temperature coolant circuit in one of a U shape, a Z shape, or a double U shape; and   the second coolant flows through the low-temperature coolant circuit in one of a U shape, a Z shape, or a double U shape.   
     
     
         11 . The stacked-plate heat exchanger according to  claim 2 , wherein the heat exchanger plates each has a circumferentially positioned edge via which each heat exchanger plate is soldered to an adjacent heat exchanger plate, wherein the partition is connected to each edge on a longitudinal end side. 
     
     
         12 . The stacked-plate heat exchanger according to  claim 11 , wherein the partition meets the edge of each heat exchanger plate one of orthogonally or at an acute angle. 
     
     
         13 . The stacked-plate heat exchanger according to  claim 11 , wherein each heat exchanger plate has one of at least one coolant inlet and at least one coolant outlet is arranged in an area of a connection of the partition to the edge of the heat exchanger plate. 
     
     
         14 . The stacked-plate heat exchanger according to  claim 13 , wherein at least one of the at least one coolant inlet and the at least one coolant outlet has a triangular cross-section with a side aligned parallel to the partition and a leg aligned parallel to the edge. 
     
     
         15 . The stacked-plate heat exchanger according to  claim 14 , wherein one of:
 the side is one of longer or shorter than the leg; or   the side and the leg are the same length.   
     
     
         16 . The stacked-plate heat exchanger according to  claim 13 , wherein the edge of each heat exchanger plate is outwardly curved in an area of the partition, and at least one of the coolant inlet and the coolant outlet has an approximately circular-segment-like cross-section. 
     
     
         17 . The stacked-plate heat exchanger according to  claim 2 , wherein the medium to be cooled flows through the heat exchanger plates in one of a U shape, a Z shape, or a double U shape. 
     
     
         18 . The stacked-plate heat exchanger according to  claim 2 , wherein at least one of:
 the first coolant flows through the high-temperature coolant circuit in one of a U shape, a Z shape, or a double U shape; and   the second coolant flows through the low-temperature coolant circuit in one of a U shape, a Z shape, or a double U shape.   
     
     
         19 . The stacked-plate heat exchanger according to  claim 1 , wherein the medium to be cooled is charge air. 
     
     
         20 . A stacked-plate heat exchanger, comprising:
 a plurality of heat exchanger plates; and   an embossed partition separating the heat exchanger plates into a high-temperature coolant circuit through which a first coolant is flowable, and a low temperature coolant circuit through which a second coolant is flowable;   wherein the heat exchanger plates are stacked one on another, and the first and second coolants flowing through the heat exchanger plates on one side, and a medium to be cooled flows through the heat exchanger plates on another side;   wherein the heat exchanger plates each has a circumferentially positioned edge via which each heat exchanger plate is soldered to an adjacent heat exchanger plate, wherein the partition is connected to each edge on a longitudinal end side.