TURBO COMPRESSOR AND TURBO REFRIGERATING MACHINE

摘要

Provide: turbo-compressor (5) is with the multiple centered on rotary shaft (15) of impeller (13), sealing (32) has opposite part (44), these are the impellers (13) of the opposite hub portion (37) in diameter side to outer diameter (37a), and slot (45) shunts the hermetic unit (32) that the part (37a) between foreign matter infiltration outer diameter is formed with opposite part (44); It is identical with a kind of offer of turbo refrigerating machine.