Patent ID: 6528773
Filing Date: 2003-03-04
Classification: H05B

Abstract:
A microwave oven comprising:a main body constituting an exterior of the microwave oven; a cooking cavity contained in the main body, and having an upper surface, a lower surface and side walls; a flow path formed between the main body and the cooking cavity, and having a suction port formed in a side wall of the cooking cavity and a discharge port formed in the upper surface of the cooking cavity; a circulating fan installed in the flow path for making air flow from the inside of the cooking cavity to the flow path through the suction port, and from the inside of the flow path to the inside of the cooking cavity through the discharge port; and; a heater installed near said discharge port in the flow path for heating air flowing from the flow path to the inside of the cooking cavity, wherein the maximum air velocity through the discharge port is 9Ëœ13 m/s, a sectional area of the discharge port is 26Ëœ38 cm2, air volume circulated through the discharge port is about 1.4Ëœ2.0 m3/min and a heater power level is maintained at about 3 kW.