JPH07326473A - Heating device - Google Patents

Abstract

PURPOSE:To evenly heat a subject to be heated using a heating device such as a microwave oven or an electric oven provided with a stand which is driven and rotated with the subject to be heated thereon by enabling the stand to be easily centered and placed on a support, and enabling the eccentricity of the stand to be automatically corrected even when the stand kept placed in an eccentric position is being driven. CONSTITUTION:A ring-shaped tapered portion 9a lowered toward an outer peripheral end is provided on the bottom surface of a stand 9 so that the stand 9 can easily be placed on the roller 3 of a support 4. Even if the stand 9 left in an eccentric position on the roller 3 is actuated with a subject 6 to be heated placed thereon, the tapered portion 9a exerts the stand 9 with a force along the direction of movement from the eccentric position to the center position, thereby correcting this eccentricity.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating apparatus provided with a pedestal for placing and rotating a heated object such as a microwave oven or an electric oven.

[0002]

2. Description of the Related Art In a heating device such as a microwave oven or an electric oven, a pedestal for placing an object to be heated is rotated during cooking to partially heat the object to be heated due to uneven radio wave distribution or electric heat distribution. In addition, the pedestal is arranged at a constant and optimum position in the heating chamber to improve the heating of the object to be heated (for example, JP-A-4-40917).
(See the official gazette).

A conventional heating device will be described below.
As shown in FIG. 4, a support base 4 having a roller 3 driven to rotate by a rotation shaft 2 driven by a motor (not shown) is arranged near the bottom surface of the heating chamber 1 and supported by the support base 4. The object 6 to be heated is placed on the received pedestal 5.

The taper 5a raised toward the outer peripheral edge of the outer peripheral portion of the receiving table 5 is formed along the outer peripheral track of the support table, and the taper 5a is placed on the roller 3 of the support table 4. When the rotary shaft 2 is activated in a state, that is, in a state where the pedestal 5 is placed eccentrically from the center of the rotary shaft 2, the pedestal 5 rotates in that position and automatically rotates.
Will not be modified to the center of.

Further, as shown in FIG. 5, the support base 4 does not have rollers, and the total weight of the support base 7 and the support base 4 is applied to the rotary shaft 2, and as shown in FIG. When the structure in which 8 is directly connected to the rotary shaft 2 is configured to be driven, the centers of the pedestals 7 and 8 cannot be easily aligned, and the pedestals 4 and 8 are eccentrically mounted from the center of the rotary shaft 2. Rotating shaft 2
When is activated, the pedestals 7 and 8 are rotated in that position.

[0006]

As described above, in the conventional structure, the center cannot be easily centered even if the receiving stands 5, 7, 8 are placed on the supporting stand 4 or the rotary shaft 2. ,
Moreover, when cooking is started while being eccentric, the rotation of the pedestals 5, 7, and 8 may stop, and at this time, partial heating due to uneven radio wave distribution or electric heat distribution cannot be prevented, There has been a problem that the cooked state of the article to be heated 6 becomes poor.

The present invention solves the above-mentioned conventional problems. The pedestal can be easily centered and placed on a support or a rotary shaft, and the pedestal can be placed eccentrically. An object of the present invention is to provide a heating device capable of satisfactorily cooking an object to be heated without eccentricity being corrected and rotation of a cradle not being stopped even if cooking is started.

[0008]

In order to achieve this object, a heating device of the present invention is a receiver for placing an object to be heated, which is supported on a rotation-driving support table arranged near the bottom surface of a heating chamber. The bottom of the table has a ring shape that has a dimension that is equal to or greater than the maximum movement distance that can be placed on the support table from the center position of the receiving table in the heating chamber to the wall surface of the heating chamber, and that is lowered toward the outer peripheral edge. The taper part is formed.

[0009]

In this structure, when the pedestal is eccentrically placed on the support pedestal, the tapered portion formed on the pedestal adds gravity to the pedestal or to the object to be heated and the pedestal. The table is centered by receiving a force in the direction of movement from the eccentric position to the central position.

[0010]

【Example】

(Embodiment 1) An embodiment of the present invention will be described below with reference to the drawings.

In one embodiment of the present invention, the same components as those described in the above-mentioned conventional example are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIG. 1, the present embodiment is characterized in that, in the above-mentioned conventional structure, a pedestal placed on a support pedestal 4 having a roller 3 rotatably driven by a rotary shaft 2. The bottom surface of the heating chamber 9 has a width dimension equal to or larger than the maximum moving distance A that can be placed on the supporting table 4 from the center position of the receiving table 9 in the heating chamber 1 to the wall surface of the heating chamber 1, and faces the wall surface. This is because the lowered ring-shaped taper portion 9a was formed. That is, the dimension of A is approximately calculated by (Equation 1).

[0013]

[Equation 1]

B and C in (Equation 1) indicate the distance from the end of the pedestal 9 to the wall surface of the heating chamber 1, and the distances D and E from the end of the pedestal 9 to the wall surface of the heating chamber 1 as well. There is a relationship shown in (Equation 2), and B, C, D and E are

[0015]

[Equation 2]

Generally, in a heating device using high frequency, it is about 3 to 10 mm. Therefore, from (Equation 1), A (width dimension of the tapered portion) is about 5 mm to 15 mm.

The pedestal 9 of the tapered portion 9a of the pedestal 9
The angle (elevation angle) θ with respect to the lower surface of the heating chamber 1 is A
Even if it is eccentric by the dimension of, the range of the value in which the outer peripheral portion of the roller 3 contacts the tapered portion 9a is 5 ° to 20 °. It is desirable that the friction coefficient between the lower surface of the pedestal 9 and the roller 3 is small.

The operation of the heating device configured as described above will be described below. When the pedestal 9 is eccentrically placed on the roller 3 of the support 4, the tapered portion 9a of the pedestal 9 applies the gravity of the pedestal 9 or the gravity of the object 6 to be heated and the pedestal 9 to eccentricity. A force acts in the direction of moving the pedestal 9 from the position to the central position, and the pedestal 9 is corrected to the central position. Further, even if the heating device is started in a state where the pedestal 9 is eccentric, the center position is automatically corrected during several rotations of the pedestal 9.

As described above, according to this embodiment, the pedestal 9
By forming the ring-shaped taper portion 9a on the lower surface of the support base 4, even if the receiving base 9 is eccentrically placed on the roller 3 of the support base 4, it can be easily corrected to the center position and can be received on the roller 3. When the pedestal 9 is placed in an eccentric state and is rotationally driven, the pedestal 9 is automatically corrected from the eccentric position to the central position during several rotations.

Further, by setting the width A of the tapered portion 9a to be equal to or larger than the maximum movement distance for contacting the wall surface on one or more sides in the horizontal direction from the center position, the pedestal 9 is placed at any place in the heating chamber 1. Even when it is placed, the taper portion 9a of the pedestal 9 is placed on the roller 3 of the support 4, and the pedestal 9 is placed at the center position by the rotational drive as described above.

Therefore, since the object 6 to be heated placed on the pedestal 9 is appropriately rotated without stopping, the object 6 to be heated can be uniformly heated and can be cooked well.

(Embodiment 2) A second embodiment of the present invention will be described below.

As shown in FIG. 2, the present embodiment has the conventional structure described in FIG. 6 in which the dimension A and the angle positioned on the outer peripheral portion of the rotary shaft 2 are located on the lower surface of the pedestal directly driven by the rotary shaft 2. θ is a configuration in which a ring-shaped taper portion 10 a having a size of about 5 mm to 15 mm and 5 ° to 20 °, which is the same as the dimension A and the angle θ of the first embodiment, is formed.

The supporting table 12 having the rollers 11 is rotated by the rotational driving of the receiving table 10, and the receiving table 10 is rotated.
However, the roller 11 is fitted in the concave portion 1a formed on the bottom surface of the heating chamber 1 so that the roller 11 does not largely deviate from the rotation center position during rotation.

With this configuration, as in the first embodiment,
The pedestal 10 can be easily placed on the rotary shaft 2, and the pedestal 10 is automatically corrected to the center position, and the same effect as that of the first embodiment can be obtained.

(Third Embodiment) A third embodiment of the present invention will be described below.

As shown in FIG. 3, the present embodiment has the conventional structure described in FIG. 5, in which the above-mentioned embodiment is provided on the lower surface of the receiving base 13 placed on the supporting base 4 fitted to the rotary shaft 2. Approximately 5 mm to 15 mm and 5 ° to 2 equivalent to the dimension A of 1 and the angle θ
This is a configuration in which a 0 ° ring-shaped taper portion 13a is formed.

With this configuration, the same effect as that of the first embodiment can be obtained.

[0029]

As is apparent from the above description, according to the present invention, the lower surface of the pedestal on which the object to be heated, which is supported by the rotationally driven support table disposed near the bottom surface of the heating chamber, is placed, A ring-shaped taper that has a dimension that is equal to or greater than the maximum movement distance that can be placed on the support table from the center position of the pedestal in the heating chamber to the wall surface of the heating chamber and that descends toward the outer peripheral edge is formed. Due to the configuration, the pedestal can be easily centered and placed on the support table, and even if cooking is started with the pedestal eccentrically placed on the support table, the eccentricity can be quickly achieved. It is possible to realize an excellent heating device which is modified so that the object to be heated can be properly cooked without stopping the rotation of the pedestal.

[Brief description of drawings]

1A is a schematic front sectional view of a heating device according to a first embodiment of the present invention, FIG. 1B is a plan sectional view of the heating device, and FIG. 1C is a state in which a pedestal of the heating device is eccentrically placed. Sectional view showing

FIG. 2 is a sectional view of a main part of a heating device according to a second embodiment of the present invention.

FIG. 3 is a sectional view of a main part of a heating device according to a third embodiment of the present invention.

FIG. 4 is a schematic front sectional view of a conventional heating device.

FIG. 5 is a sectional view of a main part of another conventional heating device.

FIG. 6 is a sectional view of a main part of another conventional heating device.

[Explanation of symbols]

 1 heating chamber 2 rotary shaft 3 roller 9 cradle 9a taper part

Claims (3)

[Claims] 1. A heating chamber, a pedestal for placing an object to be heated arranged near a bottom surface of the heating chamber, a support pedestal having a roller for supporting the pedestal, and a rotational drive of the support pedestal. A rotation axis to be provided, on the lower surface of the pedestal, having a dimension equal to or greater than the maximum movement distance that can be placed on the support table from the center position of the pedestal in the heating chamber to the wall surface of the heating chamber, Further, the heating device is characterized in that a ring-shaped taper portion which is lowered toward the outer peripheral end is formed. 2. A heating chamber, a pedestal placed near the bottom surface of the heating chamber for placing an object to be heated, a support pedestal having a roller for supporting the pedestal, and the pedestal rotationally driven. Is provided on the lower surface of the pedestal, and can be placed on the support table located on the outer peripheral portion of the rotary shaft from the central position of the pedestal in the heating chamber to the wall surface of the heating chamber. A heating device having a dimension equal to or greater than a maximum movement distance and having a ring-shaped taper portion formed downward toward an outer peripheral end. 3. A heating chamber, a pedestal for placing an object to be heated arranged near a bottom surface of the heating chamber, a support for supporting the pedestal, and a rotary shaft for rotationally driving the support. The lower surface of the pedestal has a dimension equal to or greater than the maximum movement distance that can be placed on the support table from the center position of the pedestal in the heating chamber to the wall surface of the heating chamber, and has an outer circumference. A heating device characterized in that a ring-shaped taper portion which is lowered toward the end is formed.