| 主权项 |
1. A self-cooled motor comprising:
two or more attachment portions; a shaft supported by a bearing so as to be rotatable about a rotation axis extending in a vertical direction; a rotor holder including a cylindrical portion and a bottom plate portion, and configured to rotate together with the shaft; a rotor magnet fixed to an inside of the cylindrical portion of the rotor holder; a stator located radially inside the rotor magnet; a housing configured to support the bearing and the stator; and at least one blade configured to rotate together with the shaft to generate an air current traveling radially outward, at least a portion of each blade being located axially below the bottom plate portion of the rotor holder; wherein the housing includes:
a base portion located axially above the rotor holder;the two or more attachment portions, each attachment portion being located radially outward of the rotor holder; andan outlet edge portion located in a lower end of the housing and between adjacent ones of the attachment portions, and configured to define a main air outlet axially below, the main air outlet being configured to connect a space radially inside the housing and a space radially outside the housing with each other; the bottom plate portion of the rotor holder includes a rotor vent hole configured to extend therethrough in an axial direction; and the two or more attachment portions are configured to attach the self-cooled motor to a surface of a high temperature chamber such that the shaft will extend into the high temperature chamber. |
