Patent ID: 9190887
Filing Date: 2015-11-17
Classification: H02K

Abstract:
1. A motor assembly comprising: a motor configured to be coupled to a pump; an inverter for changing a rotational speed of said motor; a cooling fan coupled to a rotational shaft of said motor the cooling fan being located at a side of said motor opposite from the pump; a guide cover for guiding gas flow, generated by rotation of said cooling fan, to said inverter; and at least two support members coupling said inverter to a side surface of said motor; wherein said at least two support members are located on both sides of a center line, the center line connecting a central axis of said motor to a center of said inverter as viewed from an axial direction of said motor, wherein a space serving as a passage of the gas flow from said cooling fan is formed between said at least two support members, wherein one of said at least two support members has a through-hole through which a power line extends, wherein said inverter has a power switching element and a box in which said power switching element is housed, said power switching element in said box is arranged adjacent to said passage of the gas flow, and said power switching element is located on the center line, and wherein an upper portion of said inverter is located radially outwardly of said cooling fan such that the gas flow, generated by the rotation of said cooling fan, contacts said upper portion of said inverter to change a direction of movement of the gas flow downward through the space between said at least two support members.