MACHINE ROOM COOLING DEVICE OF A MICROWAVE OVEN FOR INCREASING THE STRENGTH OF WINGS BY INSTALLING A RIB AT A CONNECTION PORTION OF A FRAME AND THE WINGS

摘要

PURPOSE: A machine room cooling device of a microwave oven is provided to prevent a wing unit from deforming by forming a rib between the wing unit of a cooling fan and a frame unit. CONSTITUTION: A machine room cooling device of a microwave oven comprises an airflow generating unit installed at a machine room for driving the microwave oven and composed of a plurality of wing units(510) and a frame unit(530) for supporting the wing units; a motor unit for driving the airflow generating unit; and an anti-deformation unit disposed between the wing unit and the frame unit of the airflow generating unit to prevent the wing unit from straining. The airflow generating unit is a fan. The anti-deformation unit is a rib. The rib is composed of a first rib(600) for preventing a circumferential deformation of the wing unit and a second rib(700) for preventing a rearward deformation of the wing unit.