CPC F04D 29/263 (2013.01) [F04D 17/08 (2013.01); F04D 19/002 (2013.01); F04D 29/023 (2013.01); F04D 29/054 (2013.01); F04D 29/325 (2013.01); F04D 29/522 (2013.01)] | 15 Claims |
1. An impeller, comprising:
a metal housing, having a shaft mounting hole;
a shaft, passing through the shaft mounting hole, wherein a portion of an inner surface of the shaft mounting hole is in contact with the shaft; and
a plastic member, connected to the shaft and a remaining portion of the inner surface of the shaft mounting hole that is not in contact with the shaft.
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