Plate-connection type heat exchanger

Abstract

The present invention relates to a heat exchanger and, more specifically, to a plate-connection type heat exchanger, wherein the assembling and connection of plates used in a heat exchanger can be simplified so as to reduce the manufacturing time thereof and manufacturing process, thereby improving productivity and product quality.

What is claimed is: 
     
         1 . A plate-connection type heat exchanger, in which stacked plates, each plate having a top plate and a bottom plate, and wing parts of the top plate and the bottom plate are brazed to be joined together such that a path is defined inside, characterized in that:
 the wing part of the top plate is folded downwards, and the wing part of the bottom plate is formed with a fitting surface to be fitted with the wing part of the top plate and a base surface folded in the outward direction from the fitting surface, such that the wing part of the top plate is fitted inside the fitting surface and a solvent applying space is formed between the base surface and the wing part of the top plate.   
     
     
         2 . The plate-connection type heat exchanger of  claim 1 , wherein the wing part of the top plate is formed to be folded downwards at an obtuse angle, and the fitting surface forming the wing part of the bottom plate is formed to be folded upwards. 
     
     
         3 . A plate-connection type heat exchanger, in which stacked plates, each plate having a top plate and a bottom plate, and wing parts of the top plate and the bottom plate are brazed to be joined together such that a path is defined inside, characterized in that:
 the wing part of the top plate is folded downwards at an obtuse angle, and a fitting surface forming the wing part of the bottom plate is formed to be folded upwards in a direction forming a right angle to an obtuse angle, such that the wing part of the top plate is fitted inside the fitting surface and a solvent applying space is formed between the fitting surface and the wing part of the top plate.   
     
     
         4 . The plate-connection type heat exchanger of  claim 3 , wherein the wing part of the top plate is formed to be folded downwards at an obtuse angle, and the fitting surface forming the wing part of the bottom plate is formed to be folded upwards at an acute angle in an inward direction. 
     
     
         5 . The plate-connection type heat exchanger of  claim 3 , wherein the wing part of the top plate is formed to be folded downwards at a right angle, and the fitting surface forming the wing part of the bottom plate is formed to be folded upwards at a right angle. 
     
     
         6 . The plate-connection type heat exchanger of  claim 2 , wherein a plurality of embossing protrusions are formed to be protruded at a predetermined interval on the inside of the fitting surface of the bottom plate wing part, and a bending protrusion is formed on the front end of the top plate wing part so as to be held by and fitted with the embossing protrusions. 
     
     
         7 . The plate-connection type heat exchanger of  claim 4 , wherein a plurality of embossing protrusions are formed to be protruded at a predetermined interval on the inside of the fitting surface of the bottom plate wing part, and a bending protrusion is formed on the front end of the top plate wing part so as to be held by and fitted with the embossing protrusions.