Patent ID: 7431029

Claim:
A cooling apparatus of a cooking appliance comprising: a cabinet having a cooking chamber located therein and an electric component chamber located outside the cooking chamber; a door installed on the cabinet for opening and closing the cooking chamber, and having a suction channel and a discharge channel door; and an air blower installed in the electric component chamber for sucking air to the inside of the electric component chamber through the suction channel and then discharging the air through the discharge channel, wherein the door includes a plurality of plate members spaced from each other and disposed in a substantially perpendicular direction, and the suction channel and the discharge channel are formed among the plate members, wherein an inlet is formed at a lower surface of the door, and the suction channel communicates with the inlet and the electric component chamber such that an external air sucked though the inlet flows through the suction channel from a lower part of the door towards an upper part of the door, and is sucked into the electric component chamber, wherein an outlet is formed at the lower surface of the door, the discharge channel communicates with the outlet and the electric component chamber such that the air sucked into the electric component chamber flows through the discharge chamber from the upper part of the door towards the lower part of the door, and is discharged from the door through the outlet.