(57) The invention concerns an automotive air conditioning system evaporator (2) with
an extended collector (4), whose collector cover is rounded for stability under pressure,
divided internally across the collector into a first and a second compartment (8,
10), which are associated with an inlet and outlet for the evaporator coolant, and
which exhibits divided transverse slots along its length, common to both compartments,
in which is provided a flat pipe array (20), constructed for dual flow as a minimum,
linked with each other by means of zigzag fins for the purpose of heat transfer, whose
ends are at any given time inserted into a transverse slot in the collector cover
in such a way, that one flow (22) in the flat pipes communicates with one compartment
and the other flow (24) in the flat pipes (20) communicates with the other compartment. The invention provides for the first or second wall (32, 34) of both compartments
(8, 10) formed by the collector cover at any given time to be configured as a rounded
tube for pressure stability.
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