Stacked plate heat exchanger

Abstract

A stacked plate heat exchanger having a structure that can be temporarily fixed by a simple structure in brazing, without using additional expensive parts includes a top plate, a bottom plate and a plurality of inner plates, wherein an upwardly bent tab part is formed on at least one of the plates, a cutout part is formed in plates other than the plate on which the tab part is formed, and each plate is stacked and fixed to one another with the tab part and the cutout part in a fitted state.

1 . A stacked plate heat exchanger comprising a top plate, a bottom plate and a plurality of inner plates, wherein
 an upwardly bent tab part is formed on at least one of the plates,   a cutout part is formed in plates other than the plate on which the tab part is formed, and   each plate is stacked and fixed to one another with the tab part and the cutout part in a fitted state.   
     
     
         2 . The stacked plate heat exchanger according to  claim 1 , wherein
 the tab part is formed in a rectangular shape with a pair of side surfaces and an end part,   the cutout part is formed in a rectangular shape with a pair of side surfaces and a bottom surface,   both side surfaces of the tab part abut on both side surfaces of the cutout part, respectively, and   a surface of the tab part in the bent direction is separated from the bottom surface of the cutout part.   
     
     
         3 . The stacked plate heat exchanger according to  claim 2 , wherein
 the cutout part is formed in a periphery edge part of the plate.   
     
     
         4 . The stacked plate heat exchanger according to  claim 3 , wherein
 the plate on which the tab part is formed is arranged at an intermediate layer excluding the uppermost layer and the lowermost layer in the plurality of inner plates.   
     
     
         5 . The stacked plate heat exchanger according to  claim 3 , wherein
 the tab part is formed on at least one of the top plate and the bottom plate.