Heat exchanger for two fluids, in particular a storage evaporator for an air conditioning device

摘要

A heat exchanger (10) includes at least one header box (12, 14) delimiting a first chamber (42) for a first fluid (F1) and a second chamber (44) for a second fluid (F2), as well as a beam of tubes (16) ending into the header box (12, 14) and comprising at least one first tube (18) communicating with the first chamber (42) of the collecting box (12, 14) and at least one second tube (20) communicating with the second chamber (44) of the collecting box, the first tube (18) being coupled with the second tube (20) to constitute a module (22) allowing a heat transfer between the first tube (18) and the second tube (20). The ends (32) of the first tube (18) is off-set with respect to the ends (30) of the first tube (18), so that such ends (30, 32) can be received in an alternate way in insertion holes (34) of the header box (2, 14), said holes (34) being spaced with a constant step (P).

主权项

1. A heat exchanger (10) including at least one collection box (12, 14) delimiting a first chamber (42) for a first fluid (F1) and a second chamber (44) for a second fluid (F2), as well as a core (16) of tubes (18, 20) leading into the at least one collection box (12, 14) and comprising at least one first tube (18) communicating with the first chamber (42) of the collection box (12, 14) and at least one second tube (20) communicating with the second chamber (44) of the collection box (12, 14), in which the at least one first tube (18) is joined to the at least one second tube (20) to form a module (22) enabling an exchange of heat between the at least one first tube (18) and the at least one second tube (20), in which the core (16) includes at least two modules (22) stacked and spaced apart so as to enable a third fluid (F3) passing through the core (16) of tubes (18, 20),
characterized in that the at least one first tube (18) and the at least one second tube (20) of each module (22) each have two faces that are larger than two other faces, and wherein one of the larger faces of the at least one first tube (18) is joined to one of the larger faces of the at least one second tube (20) such that the joined larger faces of the at least one first tube (18) and the at least one second tube (20) are in direct physical contact substantially over their entire length, in which the at least one second tube (20) has ends (32) spaced apart from ends (30) of the at least one first tube (18) so that the ends (30) of the at least one first tube (18) and the ends (32) of the at least one second tube (20) are received alternately in insertion holes (34) of a collection plate (38, 40) of the collection box (12, 14), and wherein the ends (30) of the at least one first tube (18) and the ends (32) of the at least one second tube (20) are spaced perpendicularly to the third fluid (F3) passing through the core (16) and apart by a constant pitch (P).