MOTOR DRIVE DEVICE IN WHICH FAN MOTOR IS EXCHANGEABLE AND CONTROL PANEL INCLUDING SAME

摘要

In a motor drive device of the present invention, a motor control unit is disposed on a first surface of an attaching unit, and a heat sink is disposed on a second surface opposite to the first surface. A first duct connects the second surface and the heat sink with each other. A second duct is disposed on the first surface, and a fan motor is disposed in the second duct. A space inside the first duct in communication with only a second opening of the attaching unit, and a space inside the second duct is in communication with both a first opening and the second opening of the attaching unit.

主权项

1. A motor drive device comprising:
a motor control unit disposed in a control panel; an attaching unit provided on one side of the motor control unit and having a first surface directed toward front of the control panel and a second surface opposite to the first surface; a heat sink attached to the one side of the motor control unit or the second surface of the attaching unit to absorb heat of the motor control unit; a first duct disposed in opposing relationship to the second surface of the attaching unit; a second duct disposed at a side opposite to a side of the attaching unit at which the first duct is disposed and in opposing relationship to the first duct; and an air blower disposed in the second duct, wherein: between the first duct and the second duct, there are formed a first opening that allows communication between outside of the first duct and inside of the second duct, and a second opening that allows communication between inside of the first duct and inside of the second duct; the first duct is provided so as to connect the heat sink and the second opening with each other; the second duct is provided so as to connect the first opening and the second opening with each other; and the air blower is disposed so as to generate an air flow from the first opening to the second opening or from the second opening to the first opening.