| 摘要 |
A rotary compressor machine, such as a combustion air charger, includes a rotatable shaft ( 18 ) having at least one compressor wheel ( 20,22 ) thereon and disposed within a housing ( 12,14 ). A donut-shaped heat exchanger ( 36 ) is located within the housing ( 12,14 ) between the compressor wheel ( 22 ) and an outlet ( 32 ) from the housing and has radially inner and outer peripheries ( 40,42 ). The outer periphery ( 40 ) defines an inlet for the heat exchanger ( 36 ) for gas discharged by the compressor wheel ( 20 ). The heat exchanger is provided with radially inner and outer flow paths defined by tubes ( 92 ) and includes a combined manifold and tank ( 44 ) which is secured and sealed to a header plate ( 88 ) receiving the tubes ( 92 ). The combined manifold and tank ( 44 ) includes first, second and third axially spaced walls ( 96,98,100 ) with each having a central opening ( 110,112,114 ). The first wall ( 96 ), at its central opening ( 110 ) is sealed and mounted to a header plate ( 88 ) at its radially outer periphery while the second wall ( 98 ), at its central opening ( 112 ), mounts a baffle ( 116 ) that extends axially to and abuts the header plate ( 88 ) to separate the radially inner and outer flow paths. The third wall 100 ), at its central opening ( 114 ), includes an annular, axial extension ( 120 ) sealingly secured to the header plate ( 88 ) at its radially inner periphery.
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