JPS6364875B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a high-frequency heating device for dielectrically heating an object to be heated housed in a heating chamber using high-frequency waves, and particularly to a radio-wave stirring device that improves the distribution characteristics of high-frequency waves supplied into the heating chamber. This is what we provide.

The radio wave stirring device conventionally installed in this type of high frequency heating device has a support shaft 1 as shown in FIGS. 4 and 5.
5 to the upper wall 14 of the heating chamber with screws 16, a rotating body 18 having radio-wave stirring blades 17 is attached to this support shaft 15, and a fifth
A substantially C-shaped support member 21 shown in the figure was inserted to prevent the rotating body 18 from falling off. However, this groove 3
1, it is necessary to use a mold with upper and lower parts and left and right parts, which increases the cost and may cause the grooves 31 to shift or burr. The support member 21
The problem was that the rotating body 18 could not be rotated smoothly.

The present invention includes a heating chamber that accommodates an object to be heated, a high-frequency generator that supplies high-frequency waves into the heating chamber, a radio-wave stirring device that stirs the high-frequency waves supplied into the heating chamber, and a rotating body of the radio-wave stirring device. A support member comprising a rotatably mounted support shaft and a top plate that partitions a radio stirring device side provided in the heating chamber and a heated object storage side, and supports the rotary body mounted on the support shaft. The above-mentioned conventional drawbacks are solved by configuring the support shaft integrally with the top plate and inserting the lower end of the support shaft into the recess of the support member.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

Note that the same members as in the conventional example will be described with the same reference numerals.

In Fig. 1, 1 is the main body of the high-frequency heating device;
A heating chamber 3 in which a heated object 2 is housed is provided within the main body 1 . Reference numeral 4 denotes a high frequency generator, and the high frequency waves generated by the high frequency generator 4 are supplied into the heating chamber 2 through a waveguide 5 to dielectrically heat the object 2 on the mounting table 6. Reference numeral 7 denotes a cooling fan that cools the high-frequency generator 4 by drawing in outside air from the intake hole 8 provided at the bottom of the main body 1 when the high-frequency generator 4 is in operation. As shown in the figure, the air is supplied into the heating chamber 3 from the punching 10 provided on the heating chamber wall through the air guide 9, and is passed through the exhaust passage 12 from the exhaust hole 11 provided on the side wall of the heating chamber together with the steam generated from the object to be heated 2. After that, it is discharged to the outside of the main body 1. Reference numeral 13 denotes a radio wave stirring device that stirs high frequency waves supplied into the heating chamber 3. As shown in FIG. The radio stirring blade 7 is fixed to this support shaft 15.
A rotating body 18 having a rotary body 18 is rotatably installed.

19 is a top plate provided below the radio stirring blade 17 to protect the radio stirring blade 17;
9, the rotating body 18 is attached to prevent the rotating body 18 from falling off.
The contact surface with the rib 20 provided on the support shaft 15
A support member 2 having a recess into which the lower end of the support member 2 is inserted.
1 is provided integrally.

When assembling this radio stirring device 13, turn the top and bottom of the main body 1 upside down, attach the support shaft 15 to the heating chamber upper wall 14 with screws 16, insert the rotating body 18 into this support shaft 15, and then Support member 2 provided in
The support shaft 15 is housed in the recess of the top plate 19, one side of the top plate 19 is held by the rail 22, and the other side is fixed to the top plate mount with screws 23.

By configuring the radio wave stirring device of the high frequency heating device in this way, as shown in FIGS. 4 and 5 of the conventional example, a substantially C-shaped support member 21 is attached to the support shaft 15 on which the rotating body 18 is mounted. Since there is no need to provide a groove for insertion, the structure of the mold for integrally molding the support shaft 15 can be simplified into upper and lower parts, which reduces the cost of the mold and prevents burrs etc. from forming on the support shaft 15. Since this can be prevented, the rotating body 18 can be rotated smoothly. In addition, since there is no need to insert the support member 21, the shaft diameter can be reduced, the crushing resistance is reduced, rotation loss is reduced, and rotation becomes smoother. Therefore, the distribution characteristics of the high frequency waves supplied into the heating chamber 3 are further improved, and the object to be heated 2 is evenly cooked.

Further, by configuring the support member 21 integrally with the top plate 19 to prevent the rotating body 18 from falling off, the number of man-hours required for assembling the radio wave stirring device 13 can be reduced.

In this embodiment, the support member 21 that supports the rotating body 18 is provided integrally with the top plate 19, but the support member 21 may be attached to the top plate 19 with screws or the like.
Further, the support member 21 may be formed into a ring shape and configured to be tightly inserted into the support shaft 15.

As is clear from the above description, according to the high-frequency heating device of the present invention, the support member that supports the rotating body of the radio-wave stirring device is provided integrally with the top plate, so that the molding process of the support shaft can be finished neatly. A rotating body having radio-wave stirring blades can be rotated smoothly without causing burrs or the like on the shaft.

Further, by integrally configuring the support member of the rotating body and the top plate, it is possible to obtain effects such as being able to reduce the number of man-hours required for assembling the radio wave stirring device.

[Brief explanation of drawings]

Fig. 1 is a side sectional view of a high frequency heating device showing an embodiment of the present invention, Fig. 2 is a plan sectional view of Fig. 1, and Fig. 3 shows the main parts of the radio stirring device shown in Fig. 1. 4 is a side sectional view showing a main part of a radio wave stirring device of a high frequency heating device showing a conventional example, and FIG. 5 is a plan view showing a support member shown in FIG. 4. 3... Heating chamber, 4... High frequency generator, 13...
... Radio stirring device, 15 ... Support shaft, 19 ... Top plate, 21 ... Support member.

Claims (1)

[Claims] 1 A heating chamber that stores an object to be heated, a high frequency generator that supplies high frequency waves into the heating chamber, a radio wave stirring device that stirs the high frequency waves supplied into the heating chamber, and a rotating body of the radio wave stirring device that is rotatable. The rotating body is equipped with a support shaft that does not bulge downward, and a top plate that partitions the radio-wave stirring device side provided in the heating chamber and the heated object storage side, and the rotating body is mounted on the support shaft. A high-frequency heating device in which a support member supporting the top plate is integrally formed with the top plate and a lower end of the support shaft is inserted into a recess of the support member.