JPS6044794B2 - High frequency heating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a so-called turntable type high frequency heating device in which a food table is rotatably installed in a heating chamber.

High-frequency heating devices with good uniform heating performance, so-called microwave ovens, have a system in which a food table called a turntable rotates, but in the conventional turntable system, as shown in Figure 1, a motor 1 A system in which the rotation of ' is transmitted to the food placing 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', and the food placing table 5' is rotated. was common.

However, this configuration is very complicated because there is a hole in the bottom of the heating chamber for passing the shaft through, and the cooking juices may flow into the motor etc. and cause a malfunction.
Since the drive shaft and the like are located inside the heating chamber, there are drawbacks such as difficulty in cleaning. For this reason, a method has been proposed in which the food table is rotated by a magnetic drive means, but when using this magnetic drive, a permanent magnet is located on the underside of the food table. There were problems with cleaning etc.

In other words, cooking juices, food gas, etc. often adhere to the food table, and it is necessary to clean it. However, if water adheres to magnets, etc., their properties will deteriorate, so it is recommended to wash the food table completely with water. This made cleaning work complicated. Furthermore, if the magnet is installed in a misaligned position, it will greatly affect its performance, so we have had to take great pains to ensure that it remains in place. Furthermore, there were other problems such as the magnet's magnetism causing the user's wristwatch to malfunction. The present invention eliminates the above-mentioned drawbacks of the prior art, and one embodiment of the present invention will be described below with reference to FIG.

In the figure, 1 is a high-frequency heating device main body, 2 is a heating chamber provided in the main body 1, and at least the bottom plate portion J is made of non-magnetic metal. 3 is a door that covers the front opening of the heating chamber 2 so that it can be opened and closed; 4 is a magnetron that supplies high-frequency energy into the heating chamber 2; and is installed on the upper surface of the heating chamber 2.

5 is a stirrer I-blade that is rotatably installed to reduce heating unevenness in the heating chamber, 6 is a partition plate that partitions the heating section and the sluter blade attachment section, and 7 is rotatably installed at the inner bottom of the heating chamber 2. The food mounting table is equipped with a second magnet 9 in an annular shape supported by a plate-shaped fixture 8 made of non-magnetic metal on the lower surface, and is rotatably equipped with a roller 10.

11 is a saucer containing food 12; 13 is a rotating body that also functions as a pulley and is rotatably mounted on a shaft 14 fixed at the center of the bottom surface outside the heating chamber; In addition to being equipped with one magnet 15, a roller 16 that comes into contact with the bottom surface outside the heating chamber is also equipped.

17 is a magnetron cooling fan motor attached to the upper wall of the heating chamber 2; 18 is a worm gear that converts the rotational force of the motor 17 by 90 degrees; A belt 26 is hung between the pulley 25 provided on the transmission rod 24 and the rotating body 13 to transfer the rotational force of the motor 17 to the rotating body 13.
is being communicated to.

Note that the space between the second magnet 9 and the fixture 8 is filled with resin 27, and the second magnet 9 is hermetically fixed within the fixture.

Therefore, even if the food table 7 is completely washed, the second magnet 9
There is no water adhesion to the surface, and no deterioration of properties occurs.
Furthermore, the food placing table 7 is made of a metal body, and in order to block the influence of magnetism on the food placing table 7, the food placing table 7 and the second
A shield plate 28 is interposed between the magnets. This shield plate 28 is hermetically fixed in the fixture together with the second magnet 9 by resin 27. Note that the resin 27 serves as a regulating piece 3 that regulates the movement of the holder 29 that determines the mutual position of the rollers 10.
If filling is done through the mounting hole 0, there is no need to provide a special filling hole in the fixture 8. In the above configuration, the second magnet 9 provided on the food table 7 and the first magnet 15 provided on the rotating body 13 have different facing poles so as to attract each other, and the first magnet 9 for driving When the rotating body 13 having the magnet 15 rotates, the food mounting table 7 having the permanent magnet 9 rotates following this rotation.

As is clear from the above embodiments, in the present invention, the space between the magnet and fixing device installed in the food table is filled with resin, and the magnet is sealed and fixed in the fixing device. This prevents water from entering the fixture and prevents deterioration of the magnet.

Further, the magnet is securely fixed in the fixture by resin, and the food table can always be rotated in a good manner.
Further, since the shield plate prevents the magnetism of the second magnet from leaking to the upper side of the food table 7, it is possible to prevent the user's wristwatch or the like from breaking down.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a conventional high-frequency heating device, and FIG. 2 is a cross-sectional view of a high-frequency heating device showing an embodiment of the present invention. 2...Heating chamber, 7...Food placement table, 8
...Fixing tool, 9...Second magnet, 15
...First magnet, 27...Resin.

Claims (1)

[Claims] 1. A plurality of first
A metal food mounting table is provided on the inner bottom surface of the heating chamber, which is driven by the rotation of the magnet, and a dish-shaped fixed plate is mounted on this food mounting table near the inner bottom surface of the heating chamber. A second magnet held by a tool is provided, and the food placing table and the second magnet are connected to each other.
A high-frequency heating device having a structure in which a shield plate is interposed between the magnets, a space between the second magnet and the fixture is filled with resin, and the second magnet is hermetically fixed within the fixture.