JPS589126Y2 - High frequency heating device - Google Patents

Description

[Detailed explanation of the invention] When food is heated by microwave heating, it generally does not produce black marks.

This is convenient when thawing and reheating frozen foods.
This is also one of the features of high-frequency heating equipment.

However, when trying to heat meat or fish, it may be preferable to have a black eye.

This invention relates to a device for adding black marks to foods by using it in combination with high-frequency heating.
The aim is to expand the uses of high-frequency heating equipment by creating black marks more neatly and easily, and to realize a more convenient equipment.

There are two ways to create black marks using a high-frequency heating device: one is to set up another heating element such as electric heat in addition to microwaves, and the other is to use a container that absorbs microwaves and generates heat. This method is generally more practical because it has a simpler configuration.

FIG. 1 shows a conventional example of using such a blackened container in a high-frequency heating device, and is shown in cross-sectional view.

In FIG. 1, a door 2 is provided on the front surface of the heating chamber 1 so as to be openable and closable, and a magnetron 3 is provided on the top surface of the heating chamber 1 to irradiate radio waves into the heating chamber 1.

Inside the heating chamber 1, a blackening container 4 made of a material such as ferrite magnetic material that absorbs radio waves and generates heat is provided.

5 is food which is an object to be heated. According to such a conventional configuration, the radio waves irradiated from the magnetron 3 are transmitted to the food 5.
At the same time, some of the radio waves are absorbed by the black eyelid container 4, and the black eye candy container 4 becomes hot.

The food 5 is heated by this heat and dark spots appear on the surface.

However, according to such a conventional configuration, the longer the radio wave irradiation time is, the higher the temperature of the blackening container 4 becomes, so if it is heated for too long, it will burn too much, and if it is not heated enough, it will not burn enough. Setting it up required considerable skill.

In addition, since the high temperature part of the blackening container 4 and the food 5 come into direct contact, only this part will burn first, making it very difficult to create a uniform blackening, which may cause the food to lose its shape. , and it is better to heat it indirectly.
For example, there were drawbacks such as the inability to create a clean black mark on bread, cakes, etc.

The present invention has been devised as a device which can cleanly and quickly apply black marks with a simple structure and is highly safe.

FIG. 2 is a cross-sectional view of a high-frequency heating device equipped with a black-marking device according to the present invention.

In FIG. 2, a magnetron 12 is placed on the top surface of the heating chamber 11.
The setting and irradiation of radio waves into the heating chamber 11 are the same.

A rail 13 is provided on the side wall of the heating chamber 11, and a grating plate 14 is removably mounted on the rail 13.

On the other side of the blackened plate 14, a heating element 15 is made of a material such as a ferrite magnetic material that absorbs radio waves and generates heat.

Reference numeral 16 denotes a substrate of the fisheye plate 14, which is made of a material that transmits radio waves, such as heat-resistant glass or ceramics, and
It is provided across opposing wall surfaces in the heating chamber 11.

The embodiment shown in FIG. 2 shows an example in which the heating element 15 faces downward.

Reference numeral 17 denotes a saucer made of a heat-resistant, low-permittivity material commonly used in high-frequency heating devices, on which food 18 is placed.

Reference numeral 19 denotes a temperature detector composed of a thermistor, thermocouple bimetal, etc., which is installed on the wall surface of the heating chamber so as to detect the temperature inside the heating chamber 11.
Connect to the 2nd power supply circuit.

According to such a configuration, radio waves are irradiated from the magnetron 12 as shown by the solid line arrows and are directed to the substrate 1 of the fisheye plate 14.
6 and is absorbed by the heating element 15, and the heating element 15 becomes high in temperature due to microwave heating.

This heat is blocked from the upper part by the substrate 16, and is radiated only to the food 18 as shown by the broken line arrow.
Make a fish pattern on the surface of Step 8.

The temperature detector 19 detects the temperature inside the heating chamber 11, and when the temperature reaches a predetermined temperature preset in the control unit 20, it cuts off the circuit of the magnetron 12 or turns it on or off to stop the oscillation of radio waves. Since the temperature inside the heating chamber 11 is controlled, the temperature inside the heating chamber 11 can be controlled.

As described above, according to the present invention, 1. Since the temperature inside the heating chamber 11 can be controlled by the temperature detector 19, it is possible to easily create a beautiful fish pattern without requiring skill, which can cause problems such as over-charring or under-charring. .

2. The temperature detector not only controls the temperature, but also detects abnormal heating within the heating chamber, so it also serves as a safety device to prevent food from igniting, resulting in extremely high safety.

3. By using a temperature detector and a control unit, for example, if the temperature is controlled to the temperature at which yeast ferments, it is possible to promote yeast fermentation, and it can be used for a wide range of purposes, such as bread making.

4. By placing a heating element on the top surface of the food, most of the radio waves are collected by the heating element and generate heat, so it reaches a high temperature in a short time, and the fish-marking board partitions the heating chamber and reduces the volume. Because of this, it has high thermal efficiency and is convenient because it allows you to create fish marks in a short time, and it is also economical as it saves power.

5. Since it can be heated from the top, it is better to heat it indirectly. For example, it can be used to create a nice fish-like texture on bread, cakes, etc.
All you can do is do it.

6. Since the food does not come into direct contact with high-temperature parts, there is no uneven burntness and a clean finish that does not cause deformation.

Also, it is easy to clean without any stickiness.

7. You can use the same saucer as you normally use, so
There is no need to worry about changing the food, and you can serve it directly to the table after heating.

8. When direct heating is required, by placing the heating element 15 on the upper side as in the embodiment shown in FIG. 3, it can be selectively used even in cases where direct heating is better, such as meat or fish.

9. Also, since these are fish eye markings that use microwaves as the heat source, the microwave control section such as microwave output control and heating time adjustment timer can be used as is to control the fish eyeing equipment, so electric heating It can be configured easily compared to a configuration that adds a fish-like pattern.

In this invention, a heating element made of a material that generates heat by radio waves is installed in the heating chamber, and a temperature sensor is installed on the side of the heating element where the object to be heated is placed, so that the temperature of the object to be heated can be determined more accurately. It provides many practical effects such as being able to detect abnormal temperatures as well as detect abnormal temperatures, and realizes a safe and practical high-frequency heating device with a wide range of uses.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a conventional high-frequency heating device, FIG. 2 is a cross-sectional view showing an embodiment of the high-frequency heating device according to the present invention, and FIG.
The figure is a cross-sectional view of the main parts of another embodiment of the high-frequency heating device according to the present invention. 11... Heating chamber, 12... Magnetron, 14... Grain plate, 15... Heating element, 17... Saucer, 19...Temperature detector, 20...Control unit.

Claims (1)

[Scope of utility model registration request] A temperature detector for detecting the temperature of the heating chamber, which includes means for supplying radio waves into a heating chamber, and a heating element made of a material that generates heat by radio waves, which is provided across opposing wall surfaces in the heating chamber, and which detects the temperature of the heating chamber on the side of the heated object of the heating element. A high-frequency heating device that is equipped with a temperature detector and controls the oscillation of radio waves.