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A manifold for a heat exchanger comprising a tank, a plurality of tubes arranged to receive fluid therein, a plurality of fins for interspacing the tubes, the fins extending along the length of the tubes to thereby define a core section, wherein the header section is formed with multi-point brazing

A manifold for a heat exchanger comprising a tank, a plurality of tubes arranged to receive fluid therein, a plurality of fins for interspacing the tubes, the fins extending along the length of the tubes to thereby define a core section, wherein the header section is formed with multi-point brazing interfaces for securing said header and said core section during a brazing process. One embodiment provides at least one doubled wall area in close proximity to the tube slot areas to form a structure of increased strength, permitting the material to be reduced in relative thickness. The manifold may be formed from flat sheet stock by extended side walls of the header portion joined by a separate cap to close a top portion of the manifold assembly for the purpose of collecting fluid to and from the tubes and said at least one inlet and outlet. For a plastic manifold, the header section is formed with an inner wall defining an extended tube slot area of a header well to receive the plastic tank foot portion thereby increasing the strength of the structure.

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1. A manifold for a heat exchanger comprising a plurality of tubes arranged to receive fluid therein, a plurality of fins for interspacing the tubes, the fins extending along the length of the tubes to thereby define a core section, said manifold comprising:a header section including:a tray portion;

1. A manifold for a heat exchanger comprising a plurality of tubes arranged to receive fluid therein, a plurality of fins for interspacing the tubes, the fins extending along the length of the tubes to thereby define a core section, said manifold comprising:a header section including:a tray portion;a plurality of collar raised above said tray portion and defining tube slots through which said plurality of tubes of said core section pass, said tube slots defining a first inner surface providing a first brazing interface with said tubes of said core section; andat least one wall section extending from a periphery of said tray portion, said wall section extending in a downward direction away from said plurality of collars and defining a second inner surface providing a second brazing interface with said plurality of tubes of said core section;wherein said first inner surface and said second inner surface define a multi-point brazing interface for securing said header and said core section during a brazing process. 2. The manifold according to claim 1, wherein said multi-point brazing interface defines a brazing surface for said plurality of tubes of said core section at an area above said tray portion and below said tray portion. 3. The manifold according to claim 1, wherein the manifold and core section are made of chemically similar materials such that the core section and manifold can be recycled without requiring disassembly and selective separation of components for environmental recycling of discarded assemblies. 4. A manifold for a heat exchanger comprising a plurality of tubes arranged to receive fluid therein, plurality of fins for interspacing the tubes, the fins extending along the length of the tubes to thereby define a core section, said manifold comprising:a header section includinga tray portion;a plurality of collars raised above said tray portion and defining tube slots through which said plurality of tubes of said core section pass, said tube slots defining a first inner surface facing said tubes of said core section; andat least one wall section extending from a periphery of said tray portion, said wall section extending in a downward direction away from said plurality of collars and defining a second inner surface facing said plurality of tubes of said core section;wherein said first inner surface and said second inner surface define a multi-point brazing interface for securing said header and said core section during a brazing process,wherein the wall section is formed with at least one doubled wall area adjacent the tube to form a structure of increased strength, permitting the material to be reduced in relative thickness. 5. The manifold according to claim 4, wherein said at least double wall area creates a truss-like formation wit the core section because clad material creates a brazed joint on an interface of the double wall area to further enhance strength and durability. 6. The manifold according to claim 4, wherein said doubled wall area is formed with a reverse bend slot wall folded over approximately 180°. 7. A heat exchanger comprising:a tank;a plurality of tubes arrange to receive fluid therein;a plurality of fins for interspacing the tubes, the fins extending along the length of the tubes to thereby define a core section;a header section adapted to form at least one of an inlet and an outlet for said fluid, said header section defining a plurality of tube slots through which said tubes pass;wherein the header section is formed with at least one doubled wall area adjacent the tube slots to form a structure of increased strength, permitting the material to be reduced in relative thickness, said at least one double wall area defines an abutting interface between two walls of said doubled wall area, andwherein said doubled wall area is formed as a reverse bend slot wall bent approximately 180° onto itself. 8. A heat exchanger comprising:a tank;a plurality of tubes arrange to receive fluid t herein;a plurality of fins for interspacing the tubes, the fins extending along the length of the tubes to thereby define a core section;a header section adapted to form at least one of an inlet and an outlet for said fluid, said header section defining a plurality of tube slots through which said tubes pass;wherein the header section is formed with at least one doubled wall area adjacent the tube slots to form a structure of increased strength, permitting the material to be reduced in relative thickness,wherein the doubled wall area is formed with a downward reverse bend of approximately 180° toward the core section to provide an outer doubled wall header portion extending below the tube slots and wherein the header section is joined with a cast tank cover fit to the header portion and secured by at least on of welding and brazing with respect to the header section to collect fluid to and from the tubes and said at least one inlet and outlet.