Abstract: Circulation duct for conveying a fluid of a heat exchanger, and heat exchanger. The duct (1) comprises two surfaces (s1, s2), each with a plurality of protruding elements (p) which project inside the duct (1), and are arranged adjacent to one another, forming a row which includes protruding elements (p) with a different form, and extends in a longitudinal direction according to the main direction of circulation Y of the fluid circulating, such that the flow of fluid encounters protruding elements (p) which are different sequentially both in space, according to this longitudinal direction, and in time, thus generating a plurality of disordered current lines (L). The heat exchanger comprises circulation ducts for a fluid, at least one of which is formed according to the circulation duct of the present invention.

Abstract: The invention is related to a heat exchanger (1), which comprises: at least one column of parallel tubes (2) which are arranged in a stack and which define a longitudinal direction; a housing (3) inside which the tubes (2) are housed, the tubes (2) being separated from one another, so as to configure a channel for the passage of cooling fluid consisting of: passage sections (4) between tubes (2) that are contiguous in the direction of the stack; passage sections (5) between tubes and housing (3); and baffles (6, 7) that deflect the cooling fluid. According to the invention, the baffles are at least two lamellar bodies (6, 7) of a single piece arranged in a plane perpendicular to the longitudinal direction.

Abstract: A heat exchanger (1) for gases, in particular for the exhaust gases of an engine includes a bundle of tubes (2) arranged inside a casing (3) defining a gas inlet (4) and outlet (5). The tubes (2) being intended for the circulation of the gases with a view to exchanging heat with a coolant, and the tubes (2) being distributed in at least one column having a plurality of rows defining a plurality of spaces (8) between the rows, and including a coolant inlet pipe (9) and outlet pipe (10) connected to the casing (3). The exchanger (1) includes a bypass channel (11) incorporated into the casing (3) capable of connecting the spaces (8) defined between the rows of tubes (2) located in front of the channel (11) with one of the coolant pipes (10), in such a way as to improve the distribution of the coolant.

Abstract: The invention is related to a heat exchanger (1), which comprises: at least one column of parallel tubes (2) which are arranged in a stack and which define a longitudinal direction; a housing (3) inside which the tubes (2) are housed, the tubes (2) being separated from one another, so as to configure a channel for the passage of cooling fluid consisting of: passage sections (4) between tubes (2) that are contiguous in the direction of the stack; passage sections (5) between tubes and housing (3); and baffles (6, 7) that deflect the cooling fluid. According to the invention, the baffles are at least two lamellar bodies (6, 7) of a single piece arranged in a plane perpendicular to the longitudinal direction.

Abstract: A heat exchanger (1) for gases, in particular for the exhaust gases of an engine, comprising a bundle of tubes (2) arranged inside a casing (3) defining a gas inlet (4) and outlet (5), said tubes (2) being intended for the circulation of the gases with a view to exchanging heat with a coolant, and said tubes (2) being distributed in at least one column having a plurality of rows defining a plurality of spaces (8) between the rows, and comprising a coolant inlet pipe (9) and outlet pipe (10) connected to the casing (3). Said exchanger (1) comprises a bypass channel (11) incorporated into the casing (3) capable of connecting the spaces (8) defined between the rows of tubes (2) located in front of said channel (11) with one of the coolant pipes (10), in such a way as to improve the distribution of the coolant.