| 摘要 |
PURPOSE: An impeller fastening structure of a turbo compressor is provided to firmly fix a driving shaft of the compressor without pressedly fitting impellers into the driving shaft when the compressor moves. CONSTITUTION: An impeller fastening structure of a turbo compressor includes a driving motor mounted on a casing for generating driving force, a driving shaft(110) coupled with the driving motor for transmitting driving force, impellers(140,150) inserted into the driving shaft for centrifugally compressing refrigerant gas and pressed by fixing nuts(41,51), wherein the impeller structure includes a lodge element installed between the outer peripheral surface of the driving shaft and the inner peripheral surface of axial holes(141,151) of the impellers not to race the driving shaft.
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