JPS61291834A - Heating unit - Google Patents

Abstract

PURPOSE:To make it possible to conduct alternate heat-cooking of high-frequency heating and oven heating capable of performing efficient heat-cooking by applying twice or more of insulating material coating treatments onto the inner wall surface of a heating chamber. CONSTITUTION:The heating unit is provided with planar heaters 9a and 9b which raise the temperature of the atmosphere within a heating chamber 2 and a high-frequency wave generator 3 for generating a high-frequency wave, and a projection 13 for holding a square oven pan 12 is provided on the side wall surface of the heating chamber 2. Also, on the inner side wall surface of the heating chamber 2 is coated with a primary enamel film 14, and is then coated with a secondary enamel film 15. By carrying out the insulation coating treatments twice or more, a pin hole 15 formed at the time of the primary coating treatment is blocked by the secondary coating treatment and so on so that the heating side wall projection 13 is not exposed through the pin hole. Therefore, the square oven pan 12 can be used at the time of high-frequency heating so that by the alternate heat cooking of high-frequency heating and oven heating, efficient heat-cooking can be carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a heating device that can perform alternate heating cooking of high frequency heating and open heating using an oven dish.

2. Description of the Related Art Generally, as shown in FIG. 3, a heating device includes a high-frequency generator 3 that supplies high-frequency waves into a heating chamber 2 provided outside the main body 1, and a heating device +a that raises the ambient temperature.
4b and a rotary mounting table 6 provided rotatably, a driving motor 6 for the rotary mounting table 5 was provided outside the heating chamber 2, and a round open plate 7 was placed on the rotary mounting table 5. Food No. 8 was being cooked in this state.

Problems to be Solved by the Invention However, in such a heating device, since the open plate 7 rotates and there are nine plates, approximately 7 of the floor area of the heating chamber 2 is used.
There was a problem that cooking could only be done in the area of the lateral root.0 Also, when using a square oven dish with a conventional heating device,
At the contact area between the square open plate and the protrusion on the side wall of the heating chamber 2,
During high-frequency heating, the insulating coating film is thin or has pinholes, so the temperature can become abnormally high.Also, this abnormally high temperature can cause insulation deterioration and cause sparks. There was a problem in that it was very difficult to perform alternate heating cooking.

The present invention solves these conventional problems and provides an excellent heating device capable of efficient heating and alternate heating of high-frequency heating and open heating.

Means for Solving the Problems The heating device of the present invention includes a heating chamber that stores and heats food in a main body, a high frequency generator that supplies high frequency waves into the heating chamber, and a heating device that increases the ambient temperature within the heating chamber. and an open plate for cooking, wherein a protrusion for holding the open plate is provided on a side wall surface of the heating chamber, and an insulating material coating treatment is applied to two or more sides of the inner side wall surface of the heating chamber. This is what I did.

Function: Since the heating device of the present invention has an insulating coating on at least two sides of the inside of the side wall of the heating chamber, the oven pan is insulated from a high frequency perspective, and even when the oven pan is in contact with the side wall of the heating chamber, the contact area is High-frequency heating is possible without sparks or abnormal temperature rises due to insulation breakdown, and short cooking times are possible by alternating heating with open heating.Since square oven plates can be used, the heating chamber floor P-alternate heating is also possible with approximately the same area.

EXAMPLE Hereinafter, a heating device according to an example of the present invention will be explained with reference to the drawings.

As shown in Fig. 1, a heating chamber 2 is provided inside the main body.
sheet heating devices sa, sb that are provided in close contact with the upper and lower outer surfaces of the outside and increase the atmospheric temperature within the heating chamber 2;
An antenna 1o that is located near the ceiling surface in the heating chamber 2 and stirs high frequency waves, a motor 1 that rotationally drives the antenna 1o, and a high frequency generator 3 that generates high frequency waves,
A protrusion 13 for holding a rectangular open plate 12 is provided on the side wall surface of the heating chamber 2.

FIG. 2 is a detailed view of the contact area between the rectangular open plate 12 and the protrusion 13 on the side wall of the heating chamber 2 in FIG. It is coated with a secondary enamel film 16. At this time, the minimum film thickness of each enamel film is 3
The thickness is 0 microns or more, and the overall film thickness is set to be 60 microns or more.

For example, if only two sides are to be coated, if the minimum film thickness of the secondary enamel film 14 is 30 microns, then if the minimum film thickness of the secondary enamel film 15 is 30 microns or more, it is suitable for general household use. It has been confirmed through experiments that no abnormal heat generation or insulation deterioration occurs during alternate heating with a high frequency output of soow and an oven heating output of 1.2KW.

In this way, when something like pinhole 16 occurs, the temperature would become abnormally high, which would occur in the conventional case.
However, by performing insulation coating on two or more sides as in the present invention, the pinholes 16 that occurred during the second coating process can be removed from the second part. Pinhole 1 after coating process
6 is closed, there is almost no probability that a pinhole will be formed in the same part, and the pinhole will pass through the pinhole surely, and the heating side wall protrusion 13 will not be exposed, and the temperature will become abnormally high during high frequency heating. Does not cause sparks. Further, for the above-mentioned reason, the square open plate 12 can also be used during high frequency heating, so the round open plate 7 is used in the heating chamber 2.
The area where food 8 can be placed, which was 7-sided with 0 floor area, can now be placed in an area that is almost the same as the floor area of heating chamber 2. Furthermore, it is now possible to place food 8 in an area that is almost the same as the floor area of heating chamber 2. Finally, high-frequency heating can be used to raise the temperature of the food 8 and open heating can be used to bake it, allowing for efficient heating and cooking in a short time. Therefore, the high frequency energy is radiated to the side where the food 8 is located, so that efficient high frequency heating can be performed.

In addition, by using dark-colored enamel for the secondary enamel film 15, dirt on food scraps, etc. is not noticeable, and the surface is smooth, making it easy to clean the inside of the heating chamber 2. Since the stain waves are radiated while being diffused by the rotatably driven antenna 10 provided on the upper surface of the antenna 2, the uniform heating characteristics during high-frequency heating are improved, which is advantageous.

Note that the same effect can be obtained by applying the same coating treatment to only the contact portion between the square open plate 12 and the heating chamber side wall protrusion 13 and the inner wall of the heating chamber 2 in the vicinity thereof.

Effects of the Invention As described above, the heating device of the present invention eliminates pinholes by applying insulating coating on two or more sides of the side wall surface in the heating chamber, and eliminates pinholes that would otherwise occur during high-frequency heating. It prevents local abnormal heat generation and even sparks caused by insulation deterioration caused by abnormal heat generation.It uses high frequency to raise the temperature of food and enables efficient short-time cooking such as open grilling, which is extremely advantageous in practical terms. be.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view of a heating device according to an embodiment of the present invention, FIG. 2 is a detailed sectional view of a main part of the same heating device, and FIG. 3 is a front sectional view showing a conventional heating device. 1...Outside of the main body, 2...-heating chamber, 3
...High frequency generator, 9a, sb...
Planar heating device, 13... Heating chamber side wall protrusion, 1
4...-secondary enamel film, 15...secondary enamel film. Name of agent: Patent attorney Toshio Nakamura and one other person? ---
ηI2 Shimuro 3---^ for 'L Bald Maki l Figure 1 Road, Men - 1 body/1ull 1
Niichi--Anti-T //----Anti-Ku-S? 7-ta/2-11-cho-shaped Saichi fine plate

Claims (1)

[Claims] (1) A heating chamber for storing and cooking food, a high-frequency generator for supplying high-frequency waves into the heating chamber, a heating device for increasing the ambient temperature in the heating chamber, and an open plate for heating and cooking. A heating device in which a protrusion for holding an open plate is provided on the side wall of the heating chamber, and the inner side wall surface of the heating chamber is coated with an insulating material at least twice.