Heat exchanger

Abstract

A heat exchanger includes a housing and a plate having four corner areas secured together, and four outer peripheral sides spaced from each other, and a flowing channel formed between corrugated structures of the housing and the plate, the housing and the plate each include a recess for forming a higher side platform and a lower side surface, and a casing and a board are disposed below the plate and have four corner areas secured together and four outer peripheral sides spaced from each other, and having a passageway formed between corrugated structures of the casing and the board, the casing and the board each include a depression for forming a higher platform and a lower side surface and located below the lower side surfaces and the higher side platforms of the housing and the plate respectively.

I claim: 
     
         1 . A heat exchanger comprising:
 a first heat exchanging unit including a housing and a plate having four corner areas secured together, and having four outer peripheral sides spaced from each other for forming a slot between said outer peripheral sides of said housing and said plate, said housing and said plate each including a corrugated structure and having a flowing channel formed between said corrugated structures of said housing and said plate and communicating with said slot that is formed between said outer peripheral sides of said housing and said plate, said housing and said plate each including a recess formed therein for forming a first higher side platform and a first lower side surface, and said housing and said plate each including two orifices formed in said first higher side platform, and each including two apertures formed in said first lower side surface, and   a second heat exchanging unit including a casing and a board disposed below said plate of said first heat exchanging unit and having four corner areas secured together and secured to said corner areas of said housing and said plate, and having four outer peripheral sides separated from each other for forming a slit between said outer peripheral sides of said casing and said board, said casing and said board each including a corrugated structure and having a passageway formed between said corrugated structures of said casing and said board and communicating with said slit that is formed between said outer peripheral sides of said casing and said board, said casing and said board each including a depression formed therein for forming a second higher platform and a second lower side surface, said second higher side platforms of said casing and said board being located below said first lower side surfaces of said housing and said plate, and said second lower side surfaces being located below said first higher side platforms of said housing and said plate, and said casing and said board each including two holes formed in said second higher side platform and aligned with said orifices of said housing and said plate respectively, and said casing and said board each including two openings formed in said second lower side surface and aligned with and communicating with said apertures of said housing and said plate respectively.   
     
     
         2 . The heat exchanger as claimed in  claim 1 , wherein said first higher side platforms of said housing and said plate are superposed with each other, and said first lower side surfaces of said housing and said plate are superposed with each other. 
     
     
         3 . The heat exchanger as claimed in  claim 1 , wherein said second higher side platforms of said casing and said board are superposed with each other, and said second lower side surfaces of said casing and said board are superposed with each other. 
     
     
         4 . The heat exchanger as claimed in  claim 1 , wherein said housing includes an outer peripheral skirt extended laterally and outwardly therefrom. 
     
     
         5 . The heat exchanger as claimed in  claim 1 , wherein said casing includes an outer peripheral skirt extended laterally and outwardly therefrom. 
     
     
         6 . The heat exchanger as claimed in  claim 1 , wherein said orifices of said housing and said plate are located in two of said corner areas of said housing and said plate, and said apertures of said housing and said plate are located in said other two corner areas of said housing and said plate. 
     
     
         7 . The heat exchanger as claimed in  claim 1 , wherein said holes of said casing and said board are located in two of said corner areas of said casing and said board, and said openings of said casing and said board are located in said other two corner areas of said casing and said board. 
     
     
         8 . The heat exchanger as claimed in  claim 1 , wherein said outer peripheral sides of said housing and said plate include a shape different from each other for forming said slot between said outer peripheral sides of said housing and said plate. 
     
     
         9 . The heat exchanger as claimed in  claim 1 , wherein said outer peripheral sides of said casing and said board include a shape different from each other for forming said slit between said outer peripheral sides of said casing and said board. 
     
     
         10 . The heat exchanger as claimed in  claim 1 , wherein said corrugated structures of said casing and said board include a structure different from each other for forming said passageway between said corrugated structures of said casing and said board. 
     
     
         11 . The heat exchanger as claimed in  claim 1 , wherein said corrugated structures of said housing and said plate include a structure different from each other for forming said flowing channel between said corrugated structures of said housing and said plate. 
     
     
         12 . The heat exchanger as claimed in  claim 1 , wherein said housing and said plate include an engaging element engaged with each other for anchoring said housing and said plate together. 
     
     
         13 . The heat exchanger as claimed in  claim 1 , wherein said casing and said board include an engaging element engaged with each other for anchoring said casing and said board together. 
     
     
         14 . The heat exchanger as claimed in  claim 1 , wherein said housing includes two curved grooves formed around said apertures of said housing, and said plate includes two curved grooves formed around said orifices of said plate. 
     
     
         15 . The heat exchanger as claimed in  claim 1 , wherein said casing includes two curved grooves formed around said openings of said casing, and said board includes two curved grooves formed around said holes of said board.