Heat exchanger header

A heat exchanger header comprising a tube plate of uniform thickness having a row of tube apertures for receiving heat exchanger tubes, a tank plate of uniform thickness having a row of chamber indentations in one side thereof facing said tube plate, said plates having mating surfaces surrounding said indentations so as to define a row of tank chambers open to selected ones of said tube apertures, said tube plate having a row of indentations forming ribs extending between selected adjacent ones of said tube apertures, said tank plate having dimples in said chamber indentations forming projections on said one side contacting selected ones of said ribs at a point intermediate the length of the rib, and bonding material for effecting bonding of said plates at said mating surfaces and said points of contact between said projections and ribs.

A heat exchanger header comprising an aluminum tube plate of uniform thickness having a row of tube apertures for receiving heat exchanger tubes, an aluminum tank plate of uniform thickness having a row of chamber indentations in one side thereof facing said tube plate, said plates having mating surfaces surrounding said indentations so as to define a row of tank chambers open to selected ones of said tube apertures, said tube plate having a row of indentations forming ribs extending between selected adjacent ones of said tube apertures, said tank plate having dimples in said chamber indentations corresponding only to those ribs located intermediate the two ribs nearest opposite ends of the respective chambers, said dimples forming projections on said one side of said tank plate contacting only the respective said intermediate ribs at a point intermediate the length of the rib, and braze cladding on said plates for effecting brazing of said plates at said mating surfaces and said points of contact between said projections and ribs.