Internally mounted radial flow intercooler for a combustion air changer

In a rotary machine including a rotatable shaft having at least one compressor wheel thereon and a housing containing at least said one compressor wheel and having an inlet to said compressor wheel and an outlet;

• a heat exchanger in said housing located between said compressor wheel and said outlet, said heat exchanger having a gas flow path having a substantial radial extent and having a gas inlet in fluid communication with said compressor wheel and a gas outlet in fluid communication with said housing outlet, said heat exchanger having a donut-shaped core with a central opening concentric about said shaft and with said gas inlet being defined by a radially outer periphery of the core and said gas outlet being defined by a radially inner periphery of the core, and coolant flow paths in said core extending generally from side to side therein, said coolant flow paths have common inlets and common outlets, said common inlets and common outlets being on the same side of the core and being defined by respective circular tanks having axially directed ports alignable with axially directed ports in said housing, said tank ports and said housing ports having sealed, mating, male/female constructions that allow the side of said core opposite said same side to move axially relative to said housing, said core being removably secured to said housing.