JPS55143330A - High-frequency heating system - Google Patents

Abstract

PURPOSE: To simplify setting of the content of heating process, by employing an arrangement in which each time period required for combined heating of high- frequency heating and grille heating can be determined at a required ratio for a fixed time period by once setting the heating time.

CONSTITUTION: When a high-frequency heating switch 4-c is turned ON, the content is stored in RAM 1-3 by means of ROM 1-2 of a microcomputor 1. Subsequently, When heating time (t) is set through manipulation of two knobs of a digital value varying means, each time period required for both of high-frequency heating and grille heating is determined at a required ratio. For instance, time periods (t) and (0.8t) are stored in RAM and indicated at 5 in the drawing. When a "heating" starting switch 4-3 is then turned ON, high-frequency generating means 7 is set into operation, and at the same time, subtraction of time (t) is started by counting the time pulses from a pulse generating circuit 3. When the result becomes zero, the process of high-frequency heating is stopped. Thereafter the heater 8 is set into operation, and subtraction of time (0.8t) is started in the same way. The operation of the heater 8 is stopped when the result of subtraction becomes zero.

COPYRIGHT: (C)1980,JPO&Japio