JPS5942561Y2 - 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 does not brown because it absorbs high-frequency power and generates heat on its own.

Also, oven cooking such as baking bread cannot be done, and cooking with an electric heater is more effective.

In order to improve this problem, the present invention relates to an electric heater that is installed in the heating chamber of a high-frequency heating device, and its purpose is to obtain an effective browning means and an oven cooking means. The purpose is to obtain a structure that allows easy cleaning of the inside of the heating chamber, which is a feature of the high-frequency heating device.

Conventional high-frequency heating devices equipped with electric heaters generally have a heating chamber made of a heat-resistant metal such as stainless steel, and electric heaters such as sheathed heaters are provided above and below the heating chamber.

With such a conventional high-frequency heating device equipped with an electric heater, when cooking in the oven, the shape of the heater can directly affect the object being heated, resulting in uneven cooking, or the radiant heat of the heater may directly hit the object, causing uneven cooking. Problems may occur, such as the surface being strongly burnt, or only the surface being strongly burnt.

Further, when an electric heater is provided in the heating chamber, the heater itself is located in the heating chamber and the attachments for supporting it protrude, which is a nuisance during general use, especially during high-frequency heating.

The cleaning of the heating chamber is also very problematic.

When we examine the usage status of high-frequency heating devices equipped with electric heaters, we find that they are frequently used for high-frequency heating.

When used in high-frequency heating, a major feature is that the heating chamber can be used in a large space, especially in the lower part, and it is also a feature of conventional high-frequency heating devices that they are clean and easy to clean.

The conventional structure lacks these features and has the disadvantage of directly receiving radiant heat from the heater.

In order to improve the above drawbacks, the present invention provides a void layer around the outer periphery of the heating chamber and inserts an electric heater into this void layer, thereby simplifying the structure inside the heating chamber and improving heating performance. It is something.

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

FIG. 1 is a side sectional view showing an embodiment of the present invention, and FIG. 2 is a front sectional view.

In the figure, 1 is a heating chamber in which food is placed and subjected to high-frequency heating or electric heater heating, 2 is a magnetron that is a high-frequency oscillator that supplies high-frequency power to heating chamber 1, and 3 is a magnetron that guides the high-frequency power oscillated by magnetron 2 to heating chamber 1. A waveguide 4 for feeding power is a door for taking food in and out of the heating chamber 1.

Reference numeral 5 denotes an upper electric heater for browning the food in the high-frequency heating apparatus constructed as described above, and is provided at the upper part of the heating chamber 1.

The upper electric heater 5 is also used to raise the ambient temperature in the heating chamber 1 for baking bread and kutski.

The upper electric heater 5 is a sheathed heater, an infrared heater, or the like, and receives power from outside the heating chamber 1 (not shown).

The present invention is a high-frequency heating device equipped with an electric heater constructed as described above, in which a gap layer 6 is provided around the outer periphery of the heating chamber 1, and a lower electric heater 7 is mounted within the gap layer 6.

The void layers 6 are provided on the outer periphery of the side wall, rear wall, and bottom wall of the heating chamber 1 at intervals of about 20 meters to 50 meters, and are covered with a heat insulating member 8 to prevent heat from escaping to the outside.

The lower electric heater 7 is provided below the bottom surface of the heating chamber 1 within the void layer 6, and is generally a sheathed heater.

When the lower electric heater 7 in the void layer 6 is energized, the interior of the void layer 6 is heated, and heat is radiated into the heating chamber 1 through the heating chamber wall 9.

Providing the lower electric heater 7 at the bottom has the effect of raising the heat in the gap layer 6 along the heating chamber wall 9 and heating the inside of the heating chamber 1 from the entire circumference of the heating chamber wall 9.

Oven cooking generally requires heating from the bottom.

With this structure, the lower part of the heating chamber 1 is close to the lower electric heater 7, and the heating effect from the lower surface remains.

If an electric heater is installed inside, the temperature inside the heating chamber 1 will not be evenly distributed because it will receive direct radiant heat from the electric heater, resulting in uneven baking, strong surface heat, and poor finished product. It doesn't become something.

In the above-mentioned high-frequency heating device equipped with the electric heater of the present invention, the entire void layer 6 is heated, and the heat is discharged from the entire surface of the heating chamber wall 9 into the heating chamber 1 to evenly raise the atmospheric temperature of the heating chamber 1. This allows for effective and uniform oven cooking.

Furthermore, when used as a high-frequency heating device, there are no protrusions inside the heating device, and the structure is very easy to use and clean.

[Brief explanation of the drawing]

FIG. 1 is a sectional side view of a high frequency heating device equipped with a heater showing an embodiment of the present invention, and FIG. 2 is a sectional side view of the same. 1... Heating chamber, 2... Magnetron,
3... Waveguide, 5... Upper electric heater,
6...Void layer, 7...Lower electric heater,
8...Insulation member.

Claims (1)

[Scope of utility model registration request] a heating chamber in which food is placed and cooked; a magnetron that is a high frequency oscillator that supplies high frequency power to the heating chamber;
A high-frequency heating device comprising a heater configured to include a void layer provided on the outer periphery of the heating chamber, and an electric heater for heating food in the void layer.