Patent ID: 6929056

Claim:
A rotary compressor machine including: a rotatable shaft having at least one compressor wheel mounted thereon; a housing formed of two separable parts with one part encompassing said at least one compressor wheel, said housing journalling said shaft, and having an inlet to said compressor wheel in said one part and an outlet in the other of said parts; and a donut-shaped heat exchanger within said housing one part and between said compressor wheel and said outlet and having radially inner and outer peripheries, one said periphery defining an inlet for receiving compressed gas from said compressor wheel and the other said periphery defining an outlet for discharging compressed gas toward said housing outlet, said heat exchanger including tube constructions defining coolant flow paths and having ends at a header plate, and characterized by the coolant flow paths being generally axial with first flow paths directing fluid away from said header plate and second flow paths returning the fluid to the header plate with said first and said second flow paths being grouped and opening to said header plate at different, radially spaced locations, and a combined manifold and tank sealed to said header plate including walls defining first and second, axially spaced, side-by-side annular spaces separated by an annular baffle extending axially from one of said walls into substantial abutment with said header plate between said different, radially spaced locations, said combined manifold and tank assembly being removably mounted to said housing in sandwiched relation between said first and second parts.