Patent ID: 9618280
Date: 2017-04-11
CPC Classifications: F28D,F28F

Claim:
1. A heat exchanger comprising an alternating stacking of first plates ( 12 ; 112 ) and second plates ( 14 ; 114 ), the first plates ( 12 ; 112 ) including first corrugations ( 16 ; 116 ), and the second plates ( 14 ; 114 ) being different from the first plates ( 12 ; 112 ) and including second corrugations ( 14 ; 114 ) so as to define, between the alternating stack of first plates ( 16 ; 116 ) and second plates ( 18 ; 118 ), first flow channels (C 1 ) for a first fluid (F 1 ) which alternate with second flow channels (C 2 ) for a second fluid (F 2 ), characterized in that the first corrugations ( 16 ; 116 ) are separated from one another by a first pitch (P 1 ) that is present only on the first plates ( 12 ; 112 ) while the second corrugations ( 18 ; 118 ) are separated from one another by a second pitch (P 2 ) that is present only on the second plates ( 14 ; 114 ), the second pitch (P 2 ) different from the first pitch (P 1 ), thus allowing the first channels (C 1 ) and the second channels (C 2 ) to define a first cross sectional area (S 1 ) and a second cross sectional area (S 2 ) that are different from one another and suitable for the first fluid (F 1 ) and for the second fluid (F 2 ), respectively; wherein the first cross sectional area (S