JPS6028889Y2 - High frequency heating device with heater - Google Patents

Description

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

High-frequency heating devices have the disadvantage that the food itself absorbs high-frequency power and generates heat on its own, so it does not brown the food.

Also, baking bread and other oven dishes do not work well, and cooking with a heater is more effective.

For this reason, a device has been put into practical use that improves the quality of cooking by providing a heater in the heating chamber of a high-frequency heating device and using both high-frequency heating using radio waves and heater heating.

By the way, in these high-frequency heating devices equipped with a heater, the heat of the heater tends to cause fats and the like from the food to be heated to scatter, thereby staining the heating chamber wall surface.

In addition, this heat raises the temperature of the heating chamber wall surface, so that the scattered grease and the like are baked onto the heating chamber wall surface, making it difficult to remove stains and making cleaning very difficult.

Therefore, in order to improve the above-mentioned drawbacks, the present invention provides a catalyst layer exhibiting a self-cleaning effect on the heating chamber wall surface to prevent the heating chamber wall surface from becoming dirty.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view showing a high frequency heating device equipped with a heater according to the present invention.

In FIG. 1, reference numeral 1 denotes a heating chamber, a waveguide 2 is connected to the heating chamber 1, and a magnetron 3, which is a high frequency oscillator, is provided in the waveguide 2.

The radio waves oscillated from the magnetron 3 pass through the waveguide 2,
Radio waves are irradiated into the heating chamber 1 through an opening 4 for feeding radio waves provided in the heating chamber 1, and the food 6, which is the object to be heated, is heated with high frequency.

The heating chamber 1 is further provided with a heater 7 composed of a sheathed heater, an infrared heater, etc., and the food 6 is heated by this heater.

The food 6 is cooked by selecting the most suitable method of heating by high frequency heating or heater heating, or by using both alone or in combination.

A self-cleaning catalyst layer 8 having a catalytic action to chemically promote the decomposition of scattered substances such as fat from the food 6 is applied to the wall surface of the heating chamber 1.

A mica plate 9 is provided in the opening 4 for radio wave power feeding.

FIG. 2 is an enlarged partial sectional view of the vicinity of the opening of the device according to the present invention.

Parts that are the same as in FIG. 1 are designated by the same numbers.

A hole 10 is formed in the mica plate 9 by press working or the like, and the opening 4 is covered by tightening the hole 10 to the waveguide 2 with a screw 11.

According to the high frequency heating device equipped with the heater according to the present invention, since the self-cleaning catalyst layer 8 is applied to the wall surface of the heating chamber, the temperature of the catalyst layer 8 and the action of the catalyst improve the ability to purify the adhered dirt. will have.

In other words, dirt tends to scatter during heating by the heater 7, but as the temperature inside the heating chamber 1 rises, the purifying ability of the catalyst layer 8 also becomes effective and automatically cleans the dirt on the wall, so the wall remains beautiful. There is no need for cleaning, and it is clean and easy to care for.

Furthermore, as mentioned above, the purification ability of the catalyst layer 8 improves as the temperature increases, and according to the present invention, since the openings 4 are covered with the mica plate 9, the heat resistance of the mica plate 9 itself is also high. , thermal deterioration does not occur even if the temperature of the heater 7 is increased.

Therefore, since the temperature of the heater 7 can be raised sufficiently, the catalyst layer 8
temperature can be raised, resulting in a high purification effect.

By closing the opening 4, it is difficult for heat to be transmitted into the waveguide 2, and electrical components such as the magnetron 3 can also be prevented from becoming hot and malfunctioning.

Since the inside of the heating chamber 1 has a sealed structure, thermal efficiency is improved.

From the standpoint of heat resistance, heat-resistant glass, crystallized glass, porcelain, and the like may be considered for the opening closing material, but compared to these materials, mica plates can be formed into thin sheets and can be freely punched.

Therefore, the holes 10 and the like can be easily made, and the screws 11 can be used to easily fix the parts.

Since it has a light specific gravity, it not only facilitates installation in this respect, but also prevents damage to the self-cleaning catalyst layer 8 at the installation portion, and is economical because the material cost is low.

In addition, it is preferable that the self-cleaning catalyst layer 8 is colored in the black range from the viewpoint of the constituent materials of the catalyst and thermal efficiency.
In this way, by making the catalyst layer 8 a blackish color and also making the mica plate 9 a blackish color, heat absorption on the heating chamber wall surface can be improved.
Heat reflection etc. become uniform even in the vicinity of the opening 4, making it difficult for uneven heat to occur, and heating can be performed uniformly and efficiently with the heater.

In terms of appearance, by using the same color, it not only looks better, but also has the effect of making discoloration or dirt caused by heat less noticeable.

Note that the effect is the same even if a heat source such as gas is used in addition to an electric heater as the heater.

As described above, according to the present invention, in addition to being able to provide a device that is hard to get dirty and easy to maintain, it also has many practical effects.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a high-frequency heating device equipped with a heater showing an embodiment of the present invention, and FIG. 2 is a partial cross-sectional view showing the vicinity of an opening of the device. 1... Heating chamber, 2... Waveguide, 3...
...Magnetron, 4...Aperture, 7...
... Heater, 8 ... Self-cleaning catalyst layer, 9 ... Mica plate.

Claims (2)

[Scope of utility model registration request] (1) A high-frequency heating device equipped with a heater characterized in that a heating chamber is provided with an opening for radio wave power supply, a self-cleaning catalyst layer is applied to at least the wall surface of the heating chamber including the opening, and the opening is covered with a mica plate. . (2) Utility model registration claim 1, characterized in that the self-cleaning catalyst layer and mica plate are blackish.
A high-frequency heating device equipped with the heater described in 2.