Heat exchanger having different flowing paths

Abstract

A heat exchanger includes a number of plate sets disposed one above the other or superposed with each other, and each plate sets includes an upper plate and a lower plate for forming one or more conduits between the upper and the lower plates, and for forming one or more ducts between the lower and the upper plates of different plates, the plates include an opening communicating and coupled to the conduits for receiving one heat medium, and an orifice communicating and coupled to the ducts for receiving a different heat medium and for separating the heat media from each other, and for allowing the heat media to have different flowing quantity from each other.

1 . A heat exchanger comprising: 
 a first plate set including a first plate and a second plate disposed below said first plate for forming at least one conduit between said first and said second plates of said first plate set, and    a second plate set including a first plate disposed below said second plate of said first plate set, for forming at least one duct between said first plate of said second plate set and said second plate of said first plate set,    said first and said second plates of said first and said second plate sets including an opening communicating and coupled to said at least one conduit formed between said first and said second plates of said first plate set for receiving a first medium, and    said first and said second plates of said first and said second plate sets including an orifice communicating and coupled to said at least one duct formed between said first plate of said second plate set and said second plate of said first plate set for receiving a second medium and for separating said first medium and said second medium from each other, and for allowing said first medium to have a greater flowing quantity than that of said second medium.    
   
   
       2 . The heat exchanger as claimed in  claim 1 , wherein said first plates and said second plates each include a wavy structure having a plurality of depressions formed between a plurality of bulges, and said depressions of said first plate of said first plate set are disposed above said bulges of said second plate of said first plate set for forming said at least one conduit between said first and said second plates of said first plate set, and said depressions of said second plate of said first plate set are disposed above said bulges of said first plate of said second plate set for forming said at least one duct between said second plate of said first plate set and said first plate of said second plate set.  
   
   
       3 . The heat exchanger as claimed in  claim 2 , wherein said depressions of said first plates of said first and said second plate sets and said bulges of said second plates of said first and said second plate sets include a triangular cross section, and said bulges of said first plates of said first and said second plate sets and said depressions of said second plates of said first and said second plate sets include a trapezoidal cross section.