| 摘要 |
PURPOSE: A structure of impellers of a turbo compressor is provided to improve the productivity by easily and accurately assembling blade-tip clearance between impellers and compressing chambers. CONSTITUTION: In a structure of impellers of a turbo compressor having a first compressing chamber and a second compressing chamber(13,14) formed at both parts of a casing(10A) with each having an external shroud plane, a first impeller and a second impeller(400,500) inserted into each compressing chamber for centrifugally compressing refrigerant gas with rotating, a plurality of vane wheels(420,520) formed in the outer peripheral surface of the main body of each impeller(410,510), inner shroud planes formed in the end of the vane wheels to be opposite to the external shroud plane leaving a predetermined blade-tip clearance.
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