Abstract: A high-frequency heating apparatus of the present invention includes a heating chamber to which a heating plate for loading a subject to be heated thereon is detachably attached, a microwave generating unit, a waveguide for transmitting a microwave from the microwave generating unit, a rotation antenna for radiating the microwave into the heating chamber from the waveguide, a driving unit for turning/driving the rotation antenna, an operating portion capable of choosing the grill menu by which the subject to be heated put on the heating plate is heated and a hot-up menu by which the subject to be heated is heated without the heating plate, and a controlling unit for controlling the driving unit based on an output signal form the operating portion, wherein the controlling unit controls to vary a direction of a sharp portion of a radiation directivity of the rotation antenna in response to the output signal from the operating portion.

Abstract: A high-frequency heating apparatus of the present invention includes a heating chamber to which a heating plate for loading a subject to be heated thereon is detachably attached, a microwave generating unit, a waveguide for transmitting a microwave from the microwave generating unit, a rotation antenna for radiating the microwave into the heating chamber from the waveguide, a driving unit for turning/driving the rotation antenna, an operating portion capable of choosing the grill menu by which the subject to be heated put on the heating plate is heated and a hot-up menu by which the subject to be heated is heated without the heating plate, and a controlling unit for controlling the driving unit based on an output signal form the operating portion, wherein the controlling unit controls to vary a direction of a sharp portion of a radiation directivity of the rotation antenna in response to the output signal from the operating portion.

Abstract: A problem of the invention is to provide a high frequency heating apparatus capable of realizing excellent heating without an irregularity in heating even for a thick-walled heated object. In order to resolve the above-described problem, according to a high frequency heating apparatus of the invention, a high frequency heating apparatus 1 for heating a heated object by irradiating a microwave having a frequency of 5.8 GHz to the heated object is constituted by mounting a plurality of pieces of wave guides 11a, 11b having feeding ports 7, 9 for emitting microwaves into a cavity 3 partitioning a heating chamber 2.

Abstract: A problem of the invention is to provide a high frequency heating apparatus capable of realizing excellent heating without an irregularity in heating even for a thick-walled heated object. In order to resolve the above-described problem, according to a high frequency heating apparatus of the invention, a high frequency heating apparatus 1 for heating a heated object by irradiating a microwave having a frequency of 5.8 GHz to the heated object is constituted by mounting a plurality of pieces of wave guides 11a, 11b having feeding ports 7, 9 for emitting microwaves into a cavity 3 partitioning a heating chamber 2.

Abstract: The invention provides a high-frequency heating apparatus capable of simultaneously heating different kinds of objects to appropriate temperatures.

Abstract: In an automatic cooking of cake, a gas sensor and a weight sensor are used to determine a total heating time. The initial weight of a food item (cake) is measured by the weight sensor, and a time (T.sub.W) proportional to a detected value of the weight sensor is determined. The amount (.DELTA.H) of change in humidity level until an arbitrarily chosen timing is detected by the gas sensor, and a time (T.sub.(.DELTA.H)) proportional to a detected value of the gas sensor is determined. These times (T.sub.W) and (T.sub.(.DELTA.H)) are added together to determine a total cooking time. With this arrangement, regardless of the kind and amount of cake and the shape of a vessel, the automatic cooking capable of giving a fine finish can be accomplished merely by selecting a single auto-key called a cake key.