Novel Heat Exchanger Corrugations and Applications Thereof

Abstract

The invention relates to a strip of corrugations ( 2 ) for brazed plate and fin heat exchangers of the type with partial offset, comprising a series of zones for brazing on a first separation sheet ( 1 ), a series of zones for brazing on a second separation sheet ( 1 ) adjacent to the first separation sheet ( 1 ) and a series of wings ( 13, 14 ), said wings forming the fins, of which at least one of the wings ( 14 ) of a corrugation is inclined without being perpendicular to the separation sheets ( 1 ) and of which at least one of the wings ( 13 ) has at least one section perpendicular to the separation sheets ( 1 ) and a brazed plate or fin exchanger comprising said corrugations.

1 - 10 . (canceled) 
   
   
       11 : A strip of corrugations for brazed plate and fin exchangers of the partially offset type, comprising a series of regions intended to be brazed to a first separation sheet, a series of regions intended to be brazed to a second separation sheet, adjacent to the first separation sheet, and a series of legs, said legs forming fins, wherein at least one of the legs of at least one corrugation is inclined, without being perpendicular to the separation sheets, and in that at least one of the legs has at least one portion perpendicular to the separation sheets. 
   
   
       12 : The strip of corrugations of  claim 11 , wherein at least one of the legs of a corrugation is inclined at an angle of 43° to 80°. 
   
   
       13 : The strip of corrugations of  claim 11 , wherein at least 60% of the corrugations have at least one of their legs which is inclined. 
   
   
       14 : The strip of corrugations of  claim 11 , wherein only one of the legs of a corrugation is inclined. 
   
   
       15 : The strip of corrugations of  claim 11 , wherein the inclined leg of a corrugation has an additional fold. 
   
   
       16 : The strip of corrugations of  claim 15 , wherein the corrugations are formed by folding plates, and in that the additional fold is not made parallel to the general direction of folding of the plates forming the corrugations. 
   
   
       17 : The strip of corrugations of  claim 11 , wherein one and the same corrugation comprises an inclined leg and a vertical leg having an inclined region. 
   
   
       18 : The strip of corrugations of  claim 11 , wherein folds are provided on a leg of at least one corrugation so as to form at least one step. 
   
   
       19 : The strip of corrugations of  claim 11 , wherein various folds are combined with one another on one and the same corrugation or on the corrugations of one and the same strip of corrugations. 
   
   
       20 : An exchanger having brazed plates or fins with corrugations as defined in  claim 11 .