| 摘要 |
<p>An automatic high-frequency heating apparatus of a composite type is disclosed, which comprises a heat source such as an electric heater or a gas burner for heating food by heat radiation or convection and a microwave source such as a magnetron for effecting microwave oscillation, and wherein both heating sources are energized alternately, a sensor detects water vapour and/or a gas emitted from the heated food, and control means operates to automatically stop the heating operation of the heating apparatus on the basis of a time required before the sensor detects a predetermined amount and more of water vapour and/or a gas within a predetermined time length.</p> |
