TURBO COMPRESSOR AND TURBO REFRIGERATING MACHINE

摘要

Provided are: a turbo compressor (5) equipped with an impeller (13) that rotates about a rotating shaft (15) as the center, and a seal portion (32) having an opposed portion (44) which is opposed in the diametrical direction to an outside diameter portion (37a) of a hub (37) of the impeller (13), a shunting slot (45) for foreign matter infiltrating between the outside diameter portion (37a) and the opposed portion (44) being formed in the seal portion (32); and a turbo refrigerating machine provided with the same.