Patent ID: 8579609
Filing Date: 2013-11-12
Classification: F04D

Abstract:
1. An inner rotor motor adapted to be used with an impeller, comprising: a bushing; a rotor comprising a shaft passing through the bushing, a magnetic conducting shell coupled to the shaft and telescoped over the bushing, and a magnetic element disposed outside of the magnetic conducting shell, the bushing being within the magnetic conducting shell, wherein the magnetic conducting shell is coupled to the shaft by a fixing element, wherein the fixing element is coupled to an inner surface of a hub of the impeller by insert molding, the hub having a downwardly extending wall with an inner sidewall and an outer sidewall, blades fixed to the outer sidewall of the hub, the magnetic conducting shell being spaced from and out of contact with the inner sidewall of the hub; and a stator disposed outside the magnetic element, the magnetic conducting shell extending between the stator and the bushing.