JPS5830709B2 - High frequency heating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a high-frequency heating device, and an object of the present invention is to provide a high-frequency heating device that can uniformly heat food and thereby prevent uneven heating. .

Heating food with a high-frequency heating device can heat the food in a short time, but because the strength of the radio waves in the heating chamber is difficult to be uniform, the food is not heated evenly and uneven heating occurs. There are drawbacks.

For this reason, conventional high-frequency heating devices use a stirring pattern in which radio waves are emitted from a magnetron to a heating chamber via a radio wave emitter and are reflected by a stirrer fan. However, if only the stirrer fan was rotated, the stirring pattern would become monotonous, such as the direction of radio wave reflection changing only periodically. The strength was not very uniform, and it was not very effective for foods that are difficult to heat uniformly, such as egg dishes and thawed dishes.

The present invention has been made to eliminate the above-mentioned conventional drawbacks.
By making the rotational speed of the rotatable radio wave emitter and the stirrer fan different, the stirring pattern by the stirrer fan is made more complex, thereby uniformizing the strength of the radio waves directed into the heating chamber and preventing uneven heating of the food. That is.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained below with reference to FIGS. 1 and 2 showing one embodiment thereof.

In the figure, 1 is the main body case, 2 is the heating chamber, the inside of which is partitioned by a saucer 3 into a heating object storage chamber 4 and a stirrer fan storage chamber 5, and the radio waves emitted from the magnetron 6 are The radio waves are radiated into the heating chamber 2 via the radio wave radiator 7.

A radio wave radiator 7 and a stirrer fan 8 are housed in the stirrer fan storage chamber 5, and their rotation axes are coaxial.

The radio wave radiator 7 is provided with a first gear plate 9, and the stirrer fan 8 is provided with a second gear plate 10, and between the first and second gear plates 9 and 10 there is a heating A power transmission gear 12 provided on a support plate 11 fixed to the chamber 2 is interposed.

The stirrer fan 8 is rotated by the wind that cools the magnetron 6, and when the stirrer fan 8 rotates in the direction of arrow A in FIG. The first and second gear plates 9,
Since the number of gears (10) is different, the rotational speeds of both at this time are different.

Using this device, we repeatedly tested egg dishes and thawed dishes, which are difficult to heat uniformly, and found no uneven heating in any case.

This is because the stirrer fan 8 and the radio wave emitter 7 are rotated and their rotation speeds are different, so the direction in which the radio waves are reflected changes every moment, making the stirring pattern complicated. This is probably because the strength of the radio waves becomes uniform.

In the above embodiment, the radio wave radiator 7 is replaced by a starrer fan 8.
For example, as shown in FIGS. 2 and 3, the first gear plate 9 is made smaller and the first gear plate 9 is rotated in the opposite direction.
Even if a power transmission gear is additionally interposed between the power transmission gear 12 and the radio wave radiator 7 and the stirrer fan 8 are rotated in the same direction to heat an egg dish, the heating is not uniform. was confirmed through experiments.

To briefly explain this experiment, we placed an egg in the center of the heating chamber 2 as shown in Figure 1 and heated it by rotating only the radio wave emitter 7, and we heated it by rotating the stirrer fan 8 and the radio wave emitter 7. The degree of uneven heating was determined based on whether or not the eggs burst when heated.

In other words, if the heating is uneven, the egg will be locally heated and burst.The result is that in the former case, the egg was locally heated and the egg burst slightly, whereas in the latter case, the egg bursts slightly. With this method, the eggs were heated evenly and the eggs did not burst.

As described above, since the high-frequency cooking device of the present invention rotates the radio wave radiator and the stirrer fan at different rotation speeds, the radio wave stirring pattern becomes complicated and the strength of the radio waves in the heating chamber increases. This makes it possible to heat evenly, even foods that are difficult to heat uniformly, such as egg dishes and thawed dishes, and as a result, uneven heating of foods can be prevented.

Further, since the configuration in which the radio wave radiator and the stirrer fan move relative to each other can be achieved by a distant relative without a special rotation drive device such as a motor, it is possible to obtain a simple and inexpensive configuration.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a high-frequency heating device according to an embodiment of the present invention, FIG. 2 is a top view of a main part of the same device, and FIG. 3 is a cross-sectional view of a main part of the same device. 7... Radio wave radiator, 8... Stirrer fan, 9... First gear plate, 10...
Second gear plate, 12...Power transmission gear.

Claims (1)

[Claims] 1. The rotatable radio wave emitter and the rotating shaft of the stirrer fan that is rotationally driven by wind are coaxial, and the radio wave emitter and the stirrer fan are each equipped with a gear, and a separately provided power transmission gear. A gear provided on the shaft of the radio wave radiator and a gear provided on the stirrer fan are interposed, and at least one of the rotational speed and direction of the radio wave radiator and the stirrer fan is changed and rotated by wind power. A high frequency heating device characterized by: