JPS5823195Y2 - High frequency heating device - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a high-frequency heating device in which a rotating table for rotating an object to be heated housed in a heating chamber is driven by magnetic coupling means such as a magnet.

Structure of the conventional example and its problems As shown in Utility Model Application No. 48-52951, the conventional high-frequency heating device has a rotating shaft made of metal with a recess in the center attached to the rotating shaft that passes through the bottom plate of the heating chamber from below. A mounting table is provided on the rotating table.

On the other hand, a pulley or the like for transmitting the power of the motor via a belt was attached to the rotating shaft below the bottom plate of the heating chamber.

Therefore, when cleaning the inside of the heating chamber, the rotary table cannot be removed from the heating chamber, making cleaning difficult, and the bottom of the heating chamber is raised by the rotary table, resulting in a reduction in effective volume.

Purpose of the invention The present invention solves the above-mentioned conventional drawbacks, and aims to provide a high-frequency heating device that effectively utilizes the volume inside the heating chamber and that does not heat unevenly the object to be heated during dielectric heating. .

Structure of the invention In order to achieve the above object, the high frequency heating device of the invention has the following features:
A metal disc-shaped rotary table that is detachably and rotatably provided in a recessed portion of the heating chamber bottom plate is rotationally driven by magnetic coupling with a rotary plate provided below the heating chamber bottom plate; A hole through which radio waves can pass is provided in the center of the rotary table, making it possible to effectively utilize the volume of the heating chamber. passes through, so even large objects to be heated can be heated evenly.

Furthermore, since the rotary table can be easily taken out from the heating chamber, it is possible to provide a high-frequency heating device that is easy to clean and easy to use.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

In Fig. 1, 1 is the main body of the high-frequency heating device, and on the front of this main body 1 is a timer operation knob 2 for setting the cooking time.
A cooking start switch 3, a cooking display lamp 4, etc. are provided.

5 is a door, and 6 is a handle provided on the door 5.

Reference numeral 7 denotes a heating chamber provided within the main body 1, and a rotary table 9 is disposed in a recess provided in a bottom plate 8 of the heating chamber 7.

This rotary table 9 is disk-shaped, and a plurality of holes 10 and a plurality of magnets 11 used as an example of magnetic coupling means are arranged in a circumferential manner at the lower part of its periphery. .

The rotary table 9 is rotatably placed on the bottom plate 8 by means of the rollers 10, and a rotating body 12 is disposed below the bottom plate 8, facing the rotary table 9.

This rotating body 12 is connected to a drive motor 14 together with a rotating shaft 13.
A plurality of magnets 15 used as an example of magnetic coupling means are disposed in a circumferential manner in a portion of the rotary table 9 facing the magnet 11, and these magnets 1
The suction force is activated between 1.15 and 1.15.

Therefore, when the rotating body 12 is driven by the drive motor 14, the rotating table 9 is driven by the attractive force of the magnet 11.15 used as the magnetic coupling means, and as a result, the rotating table 9 is The object to be heated 17 placed on the wooden tray 16 is also dielectrically heated without rotating, which prevents uneven heating. However, if the object to be heated 17 is a large object such as a cake or a lump of meat, , because the radio waves are inevitably absorbed in the central part, uneven heating occurs in this part.

For this reason, it is necessary to make it easier for radio waves to concentrate in the central part of the object to be heated 17 compared to the surface.
Approximately 5cm large enough to allow radio waves to pass through the center of the
A hole 18 of Qmm) is formed so that the radio waves reflected by the bottom plate 8 of the heating chamber 7 through the hole 18 are concentrated at the center of the object 17 to be heated.

Therefore, the reflected radio waves concentrate at the center of the heated object 17 as shown by the arrow in FIG. 2, and as a result, the heated object 17
A larger amount of radio waves is supplied to the central part than the surface, and as a result, the radio waves are uniformly absorbed by the surface where radio waves are easily absorbed and the central part where radio waves are less likely to be absorbed, and the object to be heated 17 is uniformly heated. Dielectrically heated.

As described above, according to the high-frequency heating device of this embodiment, a recess is provided in the bottom plate 8 constituting the heating chamber 7, and the rotary table 9 is provided in the recess.
By providing this, the volume inside the heating chamber 7 can be effectively utilized without being reduced.

Furthermore, by providing a hole 18 large enough to allow radio waves to pass through the center of the metal disc-shaped rotating table 9 on which the heated object is placed and rotated, the center of the large heated object 17 can be Cooking can be done almost evenly.

Furthermore, by rotating the rotary table 9 by magnetic coupling with the rotating body 12, the rotary table 9 can be easily taken out from inside the heating chamber 7, which has the effect of making it easier to clean the inside of the heating chamber 7. .

Effects of the invention As described above, according to the invention, the following effects can be obtained.

(1) By providing a recess in the bottom plate of the heating chamber and providing a metal turntable for placing the object to be heated in the recess and rotating it, the volume inside the heating chamber can be effectively utilized without shrinking.

(2) By providing a hole in the center of the rotary table large enough to allow radio waves to pass through, the radio waves pass through the center hole, so even large objects can be cooked evenly. I can do it.

(3) The rotating table installed inside the heating chamber is rotated by magnetic coupling with the rotating body installed below the bottom plate of the heating chamber, so the rotating table can be easily taken out, making it easy to clean the inside of the heating chamber. It becomes an easy-to-use high-frequency heating device.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a high-frequency heating device according to an embodiment of the present invention with the door open, and FIG. 2 is an enlarged cross-sectional view of the main parts of the device. 1...Main body, 7...Heating chamber, 8...
...Bottom plate, 9...Rotary table, 10...
Roller, 11.15... Magnet (magnetic coupling means)
, 12... Rotating body, 14... Motor,
17... Heated object, 18... Hole.

Claims (1)

[Scope of utility model registration request] A heating chamber for accommodating an object to be heated, a recess provided in a bottom plate constituting this heating chamber, and a plurality of rollers and magnets at a lower peripheral edge thereof, the heating chamber being detachably and rotatably provided in the recess. A rotating body that is provided below the bottom plate of the heating chamber and generates rotational driving force for the rotating table through magnetic coupling, and a motor that drives this rotating body, A high-frequency heating device having a configuration in which a hole through which the rotary table can pass is provided in the center of the rotary table.