Heat exchanger

Details Heat exchanger Heat exchanger

F - Mech Eng,Light,Heat,Weapons

28

D

F28D 9/00 (2006.01) F28F 3/04 (2006.01) F28F 3/08 (2006.01)

Patent

CA 2279862

Ends of heat transfer plates (S1, S2), is formed by bending foldable materials in a zigzag shape along bend lines (L1, L2), are cut in an inverted V-shape, and flange sections (26) formed by bending vertex parts of the inverted V- shape portions are superposed one over another and brazed in a planar contact state, thereby to form combustion gas passage inlets (11) and air passage outlets (16) along the two sides of the V-shape portions. Compared with brazing of separate flange members onto the cut faces of the vertex parts of the V-shape portions, this fabrication not only dispenses with precise finishing of the cut faces, but also serves to increase the brazing strength.

Des extrémités de plaques de transfert thermique (S1, S2), formées en courbant des matériaux pliables pour leur donner une configuration en zigzag le long de lignes de courbure (L¿1?, L¿2?), sont coupées en V inversé, et des sections (26) tenant lieu de brides, formées en courbant la zone qui constitue le sommet des parties en V inversé, sont superposées l'une sur l'autre et mises en contact aplani par brasage, ce qui donne des admissions (11) de passages de gaz de combustion et des sorties (16) de passages d'air le long des deux côtés des parties en forme de V. Par rapport au brasage de brides séparées sur les faces coupées des zones constituant le sommet des parties en forme de V, cette fabrication permet non seulement de supprimer le finissage précis des faces coupées, mais encore d'augmenter la résistance du brasage.

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