| 摘要 |
PURPOSE: A built-in microwave oven is provided to perform reliable operation by sufficiently cooling heating components of a microwave oven. CONSTITUTION: A built-in microwave oven comprises: an air intake grill(10) installed in the front upper portion of a microwave oven; a ventilating motor(22) installed in one upper side of a cavity to downwardly discharge sucked air along one face; a dividing guide(60) installed in the middle of the ventilating motor to divide the sucked air into the ventilating motor; and a support unit(62) spaced apart from a support upper face(12). The sucked air into the ventilating motor after flowing around the dividing guide cools a PCB(Printed Circuit Board) while passing through upper and lower portions of the support unit. According to sufficient cooling of electric equipment in the PCB, the thermal loss of the equipment is prevented. Therefore, the operational reliability of the microwave oven is improved.
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