JPS6127873B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric stove, and an object of the present invention is to provide an electric stove with improved thermal efficiency by allowing the selection of the part of the heating plate that generates heat depending on the size of the cooking container placed on it. .

Conventionally, this type of electric stove was mainly used for pot dishes such as sukiyaki and mizutaki, and the size of the stove was 4 to 5.
Diameter 24-26 to fit standard family structure of people
Generally, a pot with a depth of 3 to 4 cm was placed. In this case, it is desirable to set it slightly smaller than the outside diameter of the heating plate of the electric stove, approximately 18
It was formed to about ~20cm. For this reason, in practice,
For "hot plate" functions (grilled meat, grilled vegetables, hot cakes, etc.) that require an area of more than a certain area, for example 1000 cm ² , heating is concentrated in the center of the plate and the food in the periphery is not sufficiently heated. The drawback was that it did not burn. According to the temperature distribution and cooking experiment results, a round plate with a diameter of 36 cm (about a baking area of
In order to obtain a good temperature distribution at 1000 cm ² ), it is necessary to set the outer diameter of the heating plate to 28 to 30 cm (approximately 80% of the plate diameter), and the conventional 18 to 20 cm was completely inconvenient.
As described above, in conventional cooking devices, although the cooking container can be attached and removed, the size and shape of the cooking container are limited to a very narrow range, and the characteristics of the cooking device cannot be fully utilized.

The present invention solves the above-mentioned conventional drawbacks, and embodiments of the present invention will be described below with reference to the accompanying drawings.

In the figure, reference numeral 1 denotes a main body, which has legs 2 on the bottom, a handle 3 on the side, a switch knob 4, and a temperature adjustment knob 5 on the front. Reference numeral 6 denotes a heat generating plate supported on the upper surface of the main body 1, which includes an outer heat generating part 8 and an inner heat generating part 9 defined by a U groove 7, and heat generating elements 10, 11 and 12 corresponding to the heat generating parts 10, 11 and 12, respectively. It is made of cast iron or the like, and the top surface is smoothed to ensure good contact with the cooking container.

Reference numeral 13 denotes a temperature sensing portion of a temperature controller 14, and the temperature is set by the temperature adjustment knob 5. 15 is a small-diameter pot, and 16 is a large-diameter hot plate, which is removably placed on the heating plate 6.

The circuit configuration is as shown in Fig. 3.
4. Each heating element 10 is connected to a power source via a changeover switch 17, and by switching the changeover switch 17, it is possible to energize only the heating element 10 or energize the heating elements 11 and 12. .
For example, when cooking in a pot, the heating elements 11 and 12 of the inner heat generating section 9 are energized. Note that the heat conduction from the inner circumferential heat generating part 9 to the outer circumferential heat generating part 8 is small due to the U groove 7, and the amount of heat dissipated is small, resulting in high thermal efficiency.
Conversely, when heating the hot plate 16, the heating element 10 of the outer heat generating section 8 is energized to perform cooking.

In addition, as shown in FIG. 4, each heating element 10, 1
1 and 12 may be selectively energized. In this circuit configuration, when heating the hot plate 16, the heating elements 10 and 1
1 and actively heats the inner peripheral portion of the hot plate 16 to improve the temperature sensing accuracy of the temperature sensing portion 13.

Further, as shown in FIG. 5, a power controller 18 is connected in parallel to the temperature controller 14, and is selectively energized by a changeover switch 19 linked to the changeover switch 17. It is possible to expand the cooking range by controlling the power to suit the type of cooking, or by controlling the temperature of oil for tempura, etc.

As is clear from the above description, the present invention provides an electric stove that can make the temperature distribution uniform when heating a large-diameter cooking container and increase the thermal efficiency when heating a small-diameter cooking container. can get.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an electric stove showing one embodiment of the present invention, FIG. 2 is a sectional view of the same, FIG. 3 is a diagram of the same electric circuit, and FIGS. 4 and 5 are respectively other embodiments of the present invention. FIG. 3 is an electrical circuit diagram in an example. 6...Heating plate, 7...U groove, 8...Outer heat generating section, 9...Inner heat generating section, 10, 11, 12...Heating element, 17, 19...Switching switch.

Claims (1)

[Scope of Claims] 1. A thin walled portion is formed between the outer circumferential portion and the inner circumferential portion of a plate-shaped heat generating plate, and heating elements are provided on the outer circumferential portion and the inner circumferential portion, respectively, and each heating element is connected to the thin wall portion. An electric stove equipped with a switch that selects the energization. 2. The electric cooktop according to claim 1, wherein a changeover switch is used to select whether the power supply to each heating element is controlled by temperature or by electric power.