Abstract: The present invention relates to a pair of heat exchanger (AB) plates (A, B), comprising a first heat exchanger plate (A) and a second heat exchanger plate (B), which are disposed facing one another and are spaced apart from one another so as to define an internal volume that is able to form a channel for the flow of a first fluid (F1), and each comprising a central panel (A0, B0. Said central panels are quadrilateral or quadrilateral with optionally truncated, cut-off or rounded edges, and are flat and mutually parallel. Two opposite sides of the central panel (A0) of the first plate (A) are inclined with respect to said central panel (A0) in the direction of the second plate (B) and form first joining panels (P1, P2) that come into contact with the two corresponding flat opposite edges of the central panel (B0) of the second plate (B).

Abstract: The invention relates to a heat exchanger plate (A; B) comprising a central panel (A0; B0) with at least four sides (A1, A2, A3, A4; B1, B2, B3, B4), said central panel being preferably quadrilateral, or quadrilateral with truncated corners, said plate having: a first side (A1; B1) of the central panel which is inclined with respect to said central panel (A0; B0) and which forms a first joining panel (JA; JB), the opposite side (A3; B3) to said first side (A1; B1) which is flat.