FLUID CIRCULATION MAT, METHOD FOR MAKING SUCH A MAT AND THERMAL EXCHANGER INCLUDING SUCH A MAT

摘要

The present invention concerns fluid circulation mats (Ncf). The mat as per the invention is basically characterised in that it includes at least two sheets (11,12) made of a fluid-proof material and strutting means (14) for keeping the two sheets at a distance in order to delimit beween the opposed faces thereof (16, 18) a fluid circulation space (Ecf); said faces comprise a coiled strip (20) in form of a quasi-helix over a virtual cylindrical envelope, arranged between the two sheets (11, 12), and means for uniting the set of points located on at least two opposite generatrices of the quasi-helix contained in a diametral plane, with respectively the two opposed faces (16, 18) of the two sheets (11, 12), said two sheets (11, 12) made of one single sheet (29) folded to form a fold (31) following a folding line (80). A further subject of the present invention is the method for making such a mat, and a thermal exchanger including at least two such mats.