JPS58194292A - High frequency heating device with heater - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a high frequency heating device with a heater.

High-frequency heating devices have the disadvantage that food cannot be browned because the food itself absorbs high-frequency power and generates heat on its own.

Therefore, a high-frequency heating device with a heater was considered, and a two-vane sheathed heater with an electric heating coil and an insulating filler built into a metal pipe was adopted as the heater. This sheathed heater has an electric heating coil covered with a metal pipe, so high frequencies do not have a negative effect on the electric heating coil, making it suitable for use.

The conventional high-frequency heating device with a heater has a choke structure on the outer wall of the heating chamber 3 as shown in FIGS. 1 and 2, and therefore has the following drawbacks.

One is the choke structure 1 which also serves as a support for the heater 9.
2 is installed on the outer wall of heating chamber 3.

The distance between the support part of the heater 9 and the tip of the heater 9 becomes longer, which makes the tip more prone to looseness, which adversely affects the quality of cooking during high-frequency heating. In other words, since the heater 9 is located between the entrance of the radio wave heating chamber and the object to be heated 4, the electric field is leaked due to looseness, and the original cooking performance during high frequency heating cannot be fully demonstrated. .

Nowadays, products that are compact and can be used in small spaces are required, and the choke structure 12 has become a bottleneck. (3"-- Misaki, a product that tends to be avoided because there is no place to store a heating device.In addition, due to its large external dimensions, there are transportation costs for the product, as well as vibrations during transportation of the product, and damage caused by carelessness when the product is dropped. This solves the drawbacks of the conventional method by making the cushioning material and outer box thick enough to match the product to prevent scratches on the product.

An embodiment of the present invention will be described below.

3 to 5 show a high-frequency heating device with a heater according to an embodiment of the present invention.

In this embodiment, during high-frequency cooking, the radio waves generated from the magnetron 1 used as a high-frequency oscillator are transferred to the waveguide 2.
It is put into the heating chamber 3 through the heater 9, and is absorbed into the object to be heated 4 to be cooked. The cooking performance at this time is fully demonstrated with the heater 9 attached to the fixed position. As shown in Figure 3, a heater holder 11 is provided to prevent the tip of the heater 9 from moving up and down, but cooking performance can be improved by moving or changing the shape of this heater holder 11. It ends up getting worse. For this reason, anything that generates an electric field between the object to be heated 4 and the entrance of the heating chamber 30 needs to be installed in a completely fixed state.

Therefore, in this embodiment, the choke structure 12 was installed inside the heating chamber 3. Then, the terminal 9a of the heater 9 is drawn out of the heating chamber 3 by passing through the choke structure 12 and the opening 3a in the wall of the heating chamber 3, and the choke structure 12
The drawer portion of the heater 9 was supported by the

With this configuration, the distance between each part of the heater 9 and the support part in the heating chamber 3 becomes small, so that the rattling of the heater 9 is substantially eliminated, and the electric field is not disturbed by the rattling of the heater 9.

Furthermore, since the tip end is supported in the vertical direction by the heater holder 11, there is no wobbling. In addition, since the choke structure 12 is installed inside the heating chamber 3, the external dimensions of the main body B can be reduced, making it compact and reducing costs such as transportation costs.

Further, in this embodiment, the choke structure 12 is connected to the heating chamber 3.
Since it is located at the rear of the heater 9, the heat of the heater is easily transmitted to this part.To solve this problem, as shown in FIG. .

Note that 6 in the figure is a fan, 6 is a door provided in the opening 7, and 8 is a lower heater.

As explained above, in the present invention, by providing a choke structure inside the heating chamber, it is possible to stably obtain the most important cooking performance in a high-frequency heating device with a heater, and also to realize miniaturization. Not only has it become a product that can be used in small spaces, but it can also significantly reduce transportation and material costs.

[Brief explanation of the drawing]

Figure 1 is a side cross-sectional view of a conventional high-frequency heating device with a heater.
Figure 2 is an enlarged front sectional view of the same, Figure 3 is a side sectional view of the book,
FIG. 4 is a top sectional view of the heating chamber, and FIGS. 61 and 6 are enlarged front sectional views of FIG. 3. 3...Heating chamber, 4...Object to be heated, 6.
...Door, 9...Heater, 12...
- Chalk structure. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure q3 Figure 3 Figure 4 a

Claims (1)

[Scope of Claims] A main body having a heating chamber for accommodating an object to be heated inside, a door provided at a gateway between the two to allow the object to be heated to be taken in and taken out from the heating chamber, and a door that can be freely opened and closed, and a door for supplying the object into the heating chamber. The heater is equipped with a high-frequency oscillator that generates a high-frequency output, and a heater provided within the heating chamber, and the terminal of the heater is connected to a choke structure provided within the heating chamber, and the heater is led out of the heating chamber through an opening of the heating chamber. High frequency heating device.