JPS5825590Y2 - High frequency heating device - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a so-called turntable-type high-frequency heating device in which a rotary mounting table is rotatably provided in a heating chamber.

Conventional configurations and their problems High-frequency heating devices with good uniform heating performance, so-called microwave ovens, have been widely used in which a rotary mounting table called a turntable rotates. As shown in Figure 1, the rotation of the motor 1' is transmitted to the rotary mounting table 5' in the heating chamber by a drive shaft 4' provided through a shaft hole 3' provided near the center of the bottom of the heating chamber 2'. A common method was to rotate the rotary mounting table 5' by using the following method.

However, with this configuration, the drive shaft 3' is located on the bottom of the heating chamber 2'.
Since there is a shaft hole 3' etc. to pass through, the structure is very complicated, and the cooked juice passes through the shaft hole 3' to the motor 1'.
etc., causing a flow failure.

Furthermore, since the drive shaft 4', rollers 6', etc. are fixed in the heating chamber, it is difficult to clean them, and furthermore, the operation of attaching and detaching the rotary mounting table is complicated.

For this reason, a method has been proposed in which a rotating mounting table installed on the inner bottom of the heating chamber is rotated using magnetic coupling means, but with this method, the entire load of the rotating mounting table and the food placed on it is transferred to the heating chamber. As a result, the bottom plate of the heating chamber is deformed and the rotary mounting table cannot be rotated smoothly.

Purpose of the Invention It is an object of the present invention to solve the above-mentioned conventional drawbacks and to provide a high-frequency heating device equipped with a rotary mounting table that can be rotated smoothly.

Structure of the Invention In order to achieve the above-mentioned object distantly, the present invention provides a heating chamber inside the main body case, a rotating mounting table rotatably provided on the inner bottom surface of the heating chamber, and a magnetic coupling means to connect the rotating mounting table. A rotating body that is rotatably driven is rotatably provided on the outer bottom surface of the heating chamber, and the rotating mounting table is provided with a plurality of concentric first rollers that support the rotating mounting table, while the rotating body is provided with a plurality of first rollers that support the rotating mounting table. A plurality of second rollers that rotate in contact with the outer bottom surface of the chamber are provided concentrically on the outer periphery of the magnetic coupling means,
When the rotating mounting table and rotating body are rotated, the first roller and the second roller are always rotated facing each other.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

In Fig. 2, 1 is the main body case, and this main case 1
A heating chamber 2 is provided inside.

Further, a circular squeeze part 4 is provided on the bottom plate 3 of the heating chamber 2, and a rotary mounting table 5 is rotatably provided on the inner bottom surface of the heating chamber 2, that is, on the top surface of the squeeze part 4. A rotating body 6 is rotatably provided on the outer bottom surface, that is, the lower surface of the squeeze portion 4.

The rotary mounting table 5 is for placing food (not shown) and a saucer 7, and has three first rollers 8 and 3 on its lower surface.
Permanent magnets 9 are provided, and the rotary mounting table 6 is supported by the rollers 8.

The three rollers 8 are concentrically spaced at equal intervals of 120°, and the three permanent magnets 9 are also concentrically spaced at equal intervals of 120°.

Further, the rotary body 6 is provided to rotate the rotary mounting table 5 by magnetic coupling means, and is specifically constructed of a gear plate rotated by a motor 10.

Note that this rotating body 6 has a support shaft 1 attached to the bottom plate 1a of the main body case 1 in order to prevent the strength of the bottom plate 3 of the heating chamber 2 from decreasing.
It is supported by 1.

In addition, this rotary body 6 is also provided with three second rollers 12 and three permanent magnets 13 concentrically, respectively, as in the rotary mounting table 5, and the first roller 8 and the second roller The roller 12 and the permanent magnets 9 and 13 are provided at opposing positions, respectively.

Note that an attractive force acts between the permanent magnets 9 and 13, so that when the rotating body 6 is rotated by the motor 10, the rotating mounting table 5 is rotationally driven by this magnetic coupling means. It has become.

In addition, in this case, the second roller 12 is located on the outer bottom surface of the heating chamber 2;
In other words, it rotates in contact with the lower surface of the squeeze portion 4.

Therefore, when the rotary mounting table 5 and the rotating body 6 rotate, the first roller 8 and the second roller 12 are always opposed to each other at the periphery of the squeeze section 4, which is the strongest part of the bottom plate 3 of the heating chamber 2. It is designed to rotate.

In the figure, 14 is a door, 15 is a waveguide for transmitting high-frequency electromagnetic waves from a magnetron (not shown), and 1
6 is a stirrer fan that stirs the high frequency electromagnetic waves; 17
is the top plate.

In the above configuration, the rotary mounting table 5 is supported by the three first rollers 8, and therefore all the load of the rotary mounting table 5 and the food (not shown) is transferred to the squeeze section on which the first rollers 8 rotate. It is added to the periphery of 4.

For this reason, a downward deforming force is applied to this part, but as mentioned above, the second roller 12 is always opposed to this downward part, so this part is not lifted up by this roller 12. state.

Therefore, there is no deformation of this part at all, and as a result, the first roller 8 and, by extension, the rotary mounting table 5 rotate smoothly.

In addition, as mentioned above, the peripheral edge of the bulging portion 4 where the first roller 8 rotates has the strongest strength in the bottom plate 3 of the heating chamber 2.
Therefore, the force that tends to deform downward becomes considerably small.

Therefore, the pressing force applied to the second roller 12 is naturally small, and as a result, it has no effect on the rotation of the rotary body 6 and, by extension, the rotation of the rotary mounting table 5, so that they rotate smoothly. be.

Effects of the Invention As described above, the high-frequency heating device of the present invention keeps the first roller and the second roller at all times when the rotating mounting table and rotating body are rotating, that is, when food is placed on the rotating mounting table and cooking is being carried out. They are rotated so that they face each other.

Therefore, even if the food is heavy and the bottom plate of the heating chamber tries to deform downward, that part will be lifted by the second roller as described above, and as a result, the bottom plate of the heating chamber will not deform at all and the heating chamber will not deform at all. The transfer table can be rotated smoothly.

In addition, since the bottom plate of the heating chamber does not deform, it remains clean and has high commercial value.Furthermore, since the bottom plate remains flat, food particles do not accumulate in this area, making it easy to clean and hygienic.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of a conventional high-frequency heating device, and FIG. 2 is a sectional view of a high-frequency heating device according to an embodiment of the present invention. 1... Main body case, 1a... Bottom plate of main body case, 2... Heating chamber, 3... Bottom plate of heating chamber, 4... - Squeezing unit, 5...Rotating mounting table, 6...Rotating body, 8...First
roller, 12... second roller.

Claims (3)

[Scope of utility model registration request] (1) A heating chamber is provided inside the main body case, a rotary mounting table is rotatably provided on the inner bottom surface of the heating chamber, and a rotating body for rotationally driving the rotary mounting table by a magnetic coupling means is placed outside the heating chamber. The rotary mounting table is provided with a plurality of concentric first rollers that support the rotary mounting table, and the rotating body is provided with a plurality of first rollers that rotate in contact with the outer bottom surface of the heating chamber. 2 rollers are provided concentrically on the outer periphery of the magnetic coupling means, and the first roller and the second roller are always rotated facing each other when the rotary mounting table and the rotating body are rotated. (2) The high-frequency heating device according to claim 1, wherein the rotating body is pivotally supported on the bottom plate of the main body case. (3) The high frequency device according to claim 1 or 2, wherein a circular aperture is provided on the bottom plate of the heating chamber, and the first roller is rotated at the peripheral edge of the aperture. heating device.