Abstract: The invention relates to a header tank (5) for a mechanically assembled heat exchanger, notably for a motor vehicle, said exchanger (1) comprising a mechanically assembled heat-exchange core bundle (3) and comprising at least one row of tubes (31) with two end tubes (31) one at each end of said at least one row, the tubes (31) respectively comprising an end (311) intended to open into an interior volume of the header tank (5). According to the invention, the header tank (5) comprises at least one end stop (55) configured to be positioned facing an internal surface of the end (311) of an associated end tube (31) and to collaborate with said internal surface in such a way as to prevent said tube (31) from moving in the direction of the interior volume of the header tank (5).

Abstract: The invention relates to a header tank (5) for a mechanically assembled heat exchanger, notably for a motor vehicle, said exchanger (1) comprising a mechanically assembled heat-exchange core bundle (3) and comprising at least one row of tubes (31) with two end tubes (31) one at each end of said at least one row, the tubes (31) respectively comprising an end (311) intended to open into an interior volume of the header tank (5). According to the invention, the header tank (5) comprises at least one end stop (55) configured to be positioned facing an internal surface of the end (311) of an associated end tube (31) and to collaborate with said internal surface in such a way as to prevent said tube (31) from moving in the direction of the interior volume of the header tank (5).

Abstract: The invention relates to a heat exchanger comprising: at least one row of tubes (2), at least one fin (4) disposed transversely to said row of tubes (2), the tubes being connected to the fin (4) by clamping the tubes (2) in a collar (6) formed in the fin (4); and at least one row (10) of louvers (12), said row (10) being formed in the fin (4) and interposed between two tubes (2) in the row of tubes. With the fin (4) having a flat rectangular overall shape, the ratio between the number of louvers (12) and the width of the fin (4) is between 0.73 and 1.13.

Abstract: A thermal battery having an enclosure including a fluid inlet and outlet. Between the inlet and outlet are tubes of encapsulated phase-change material. The tubes are arranged parallel to each other, and include radial spacers for spacing the tubes apart, such that the radial spacers of each of any two given contiguous tubes are longitudinally and radially offset from one another so as to allow fluid to circulate.

Abstract: The present invention relates to a thermal battery (1) comprising an enclosure (3) comprising a fluid inlet and outlet and comprising within it tubes (5) of encapsulated phase-change material, said thermal battery (1) further comprising a device (7) for holding and spacing the tubes (5) of encapsulated phase-change material, said holding and spacing device (7) being arranged between the tubes (5) themselves and between the tubes (5) and the enclosure (3), said holding and spacing device (7) being porous.

Abstract: The invention concerns a header (10) for a heat exchanger of a motor vehicle, configured to receive heat exchange tubes (12). The header comprises: a metal plate (18) through which the tubes (12) pass and which has two longitudinal edges (26) for crimping of the header (10) to a header box (16), and a plate (22) comprising a polymer material placed above the metal plate (18) and provided with openings (42) for receiving the tubes (12).

Abstract: The invention relates to a heat exchanger (1) comprising at least one tube (2) for heat transfer fluid to flow through, connected to at least one heat dissipation fin (4). The fin (4) is made of expanded metal sheet.

Abstract: The invention relates to a heat exchanger comprising: at least one fin (4); at least one row of tubes (2), the tubes being connected to the fin (4) by clamping the tubes (2) in a collar (6) formed in the fin (4); and at least one row (10) of louvers (12), said row (10) being formed in the fin (4) and interposed between two tubes (2) in the row of tubes, each louver (12) comprising a blade (14) provided with a free edge (16) and a connecting edge (18) connecting the louver (12) to the fin (4). The connecting edge (18) of the blade (14) of at least the first louver (12) in the row (10) forms an upstream edge with respect to the air flow, the free edge (16) of the blade (14) forming the downstream edge.

Abstract: The invention relates to a heat exchanger comprising: at least one row of tubes (2), at least one fin (4) disposed transversely to said row of tubes (2), the tubes being connected to the fin (4) by clamping the tubes (2) in a collar (6) formed in the fin (4); and at least one row (10) of louvers (12), said row (10) being formed in the fin (4) and interposed between two tubes (2) in the row of tubes. With the fin (4) having a flat rectangular overall shape, the ratio between the number of louvers (12) and the width of the fin (4) is between 0.73 and 1.13.

Abstract: The present invention concerns a heat exchanger (1) comprising: a tube bundle (2) comprising a plurality of tubes (20) arranged parallel to each other and spacers (21) arranged between said tubes (20), a collector plate (4) comprising holes (43) respectively bordered by first flanges (44) into which ends (22) of the tubes (20) are inserted, the tube bundle (2) being brazed and the collector plate (4) comprising at least one compressible seal (41) forming second flanges (45), the second flanges (45) being compressed between the first flanges (43) and the ends (22) of the tubes (20) in order to provide a tight seal between said ends (22) of the tubes (20) and the corresponding first flanges (43).

Abstract: The invention concerns a fin of a heat exchanger, notably for a motor vehicle, comprising at least one orifice (22) of substantially longitudinal shape, intended to have passing through it a tube of the heat exchanger, said at least one orifice (22) being bordered by a flange (32) formed as an integral part of the fin. According to the invention, the flange (32) is produced with a shape substantially curved with respect to the general plane defined by the fin, such that it has a radius of curvature (R1, R2) between the general plane defined by the fin (20) and the top of the flange (32) and the top of the flange (32) projecting from the general plane defined by the fin (20), the radius of curvature of the flange being at a minimum (R1) at the ends of the associated orifice (22) and at a maximum (R2) in a substantially central region along the longitudinal axis of the associated orifice (22).

Abstract: The present invention relates to a thermal battery (1) comprising an enclosure (3) comprising a fluid inlet and outlet and comprising within it tubes (5) of encapsulated phase-change material, said thermal battery (1) further comprising a device (7) for holding and spacing the tubes (5) of encapsulated phase-change material, said holding and spacing device (7) being arranged between the tubes (5) themselves and between the tubes (5) and the enclosure (3), said holding and spacing device (7) being porous.

Abstract: The present invention relates to a thermal battery comprising an enclosure comprising a fluid inlet and outlet and comprising within it tubes (1) of encapsulated phase-change material, said tubes (1) being arranged parallel to the circulating flow of fluid, said tubes (1) comprising radial spacers (3) for spacing said tubes (1) apart.

Abstract: The present invention relates to an encapsulated phase-change material (1) comprising a phase-change material (3) contained within a tube (5), said tube (5) being made of plastic and that it has a sealing weld (9) at least at one of its ends.

Abstract: The present invention relates to a thermal battery (1) comprising an enclosure comprising a fluid inlet and outlet and comprising within it an encapsulated phase-change material in the form of at least one tube (3), at least one tube (3) being wound in a spiral within the enclosure.

Abstract: The invention relates to a heat exchanger, notably for a motor vehicle, said exchanger comprising a core bundle for the exchange of heat between a first and a second fluid, said core bundle comprising a plurality of tubes (3) and a header tank (2), said tubes (3) and said tank (2) allowing said first fluid to circulate between them, said exchanger further comprising a retaining plate (16) for holding said tubes (3), said plate (16) being fixed to said tank (2), said tank (2) comprising a collector plate (6) provided with orifices through which said tubes (3) pass, said collector plate (6) being made of plastic. The invention also relates to a method of manufacturing such an exchanger.

Abstract: A method is disclosed for producing a heat exchanger, in particular for a motor vehicle, a method whereby fluid circulation tubes (3) are inserted into through holes in heat exchange fins (4) and the fluid circulation tubes (3) are subjected to expansion in such a way as to expand a contour (22) of the tubes (3) to ensure contact with the fins (4) at the through holes and, additionally, for at least one of the tubes (3), to deform a concave portion (24) of the contour (22) of the tube or tubes (3), in such a way as to correspondingly deform the through holes. A device for implementing the method and an exchanger obtained by the method are also disclosed.

Abstract: The invention concerns a header (10) for a heat exchanger of a motor vehicle, configured to receive heat exchange tubes (12). The header comprises: a metal plate (18) through which the tubes (12) pass and which has two longitudinal edges (26) for crimping of the header (10) to a header box (16), and a plate (22) comprising a polymer material placed above the metal plate (18) and provided with openings (42) for receiving the tubes (12).

Abstract: A tube (10) for a motor vehicle heat exchanger exhibits a cross section comprising two opposite longitudinal walls (12), each provided with at least two concave portions (14).

Abstract: The invention relates to a method for producing a heat exchanger, in particular for a motor vehicle, a method whereby fluid circulation tubes (3) are inserted into through holes in heat exchange fins (4) and the fluid circulation tubes (3) are subjected to expansion in such a way as to expand a contour (22) of said tubes (3) to ensure contact with said fins (4) at said through holes and, additionally, for at least one of said tubes (3), to deform a concave portion (24) of the contour (22) of said tube or tubes (3), in such a way as to correspondingly deform said through holes. The invention also relates to a device for implementing said method and an exchanger obtained by said method.