JPH0119357Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a microwave oven that heats food with microwaves while placing it on a turntable and rotating it.

(B) Prior Art In microwave ovens that perform microwave heating, a turntable on which food is placed and rotated is generally used to prevent uneven heating as much as possible. However, simply using a turntable in this way cannot sufficiently prevent uneven heating, and for this reason, as shown in Japanese Utility Model Publication No. 57-12556, a turntable is supported rotatably. A microwave oven has been proposed in which a microwave reflector is integrally provided on a roller support of a support roller that moves around the rotation center of a turntable. In such microwave ovens, uneven heating can be prevented to a considerable extent, but further measures to prevent uneven heating are desired.

(c) Purpose of the invention The purpose of the invention is to significantly eliminate uneven heating.

(d) Structure of the invention In order to achieve the above object, the structure of the invention includes a heating chamber to which microwaves are supplied, a turntable on which food is placed and rotated in the heating chamber, and a rotatable turntable. a support roller that moves around the rotation center of the turntable while supporting the support roller; a roller support that supports the support roller so as to be movable in the radial direction of the turntable; The present invention is characterized by comprising a microwave reflector that moves in the direction, and path determining means that makes the movement path of the support roller non-circular with respect to the center of rotation of the turntable.

(e) Examples A microwave oven according to an embodiment of the present invention will be described below.

1 to 3, 1 is a heating chamber to which microwaves are supplied, 2 is a turntable on which food is placed and rotated within the heating chamber, and 3 is a bottom wall 4 of the heating chamber outside the heating chamber 1. low speed drive motor, fixed to
A shaft 5 is rotatably supported by a fixed bearing 6 on the bottom wall 4 of the heating chamber, the lower end of the shaft is connected to the motor 3, and the upper end is removably engaged with the turntable 2. Thereby, the drive force of the motor 3 is transmitted to the turntable 2, and the turntable 2 rotates. Reference numeral 7 denotes three support rollers that rotatably support the turntable 2 and move around the rotation center axis (dotted chain line) of the turntable 2 as described later; 8 is a roller shaft of the support roller; 9 is a roller support body which is removably fitted onto the upper end of the shaft 5 and supports the support roller 7 so as to be movable in the radial direction of the turntable 2. That is, the support body has three pipe-shaped support parts 10, and the roller shaft 8 is attached to the support parts.
is attached to the turntable 2 so as to be movable in the radial direction. A microwave reflector 11 is fixed to the roller shaft 8 and moves in the radial direction of the turntable 2 together with the support roller 7;
Reference numeral 12 denotes a groove as a means for determining the path of the roller 7, which is pressed into the bottom wall 4 of the heating chamber. The support roller 7 moves along the groove 12, thereby determining the movement path of the support roller 7 in a square shape.

When the motor 3 is driven, the turntable 2 is supported by the rollers 7 and rotates stably. In this case, the roller 7 is the turntable 2.
Since the roller 7 is supported so as to be movable in the radial direction of the turntable 2, the roller 7 moves in the square groove 1 at a lower speed than the turntable 2 as the turntable 2 rotates.
Move along 2. That is, the roller 7 constantly moves in the radial direction of the turntable 2 and rotates around the rotation center axis of the turntable 2. Furthermore, as the roller 7 moves, the reflector 1
1 similarly constantly moves in the radial direction of the turntable 2 and rotates around the rotation center axis of the turntable 2. In such a case, the movement of the reflector 11 within the heating chamber 1 becomes complicated, sufficient microwave stirring is performed, and uneven heating of the food becomes noticeable together with the rotation of the turntable 2. Prevented.

FIG. 4 shows a microwave oven according to another embodiment of the present invention. Incidentally, the same parts as those in the above embodiment are denoted by the same reference numerals, and the explanation thereof will be omitted.

13 is an annular microwave reflector that is integrally provided within the roller 7 as shown in FIG. 5, and 14 is a roller support that supports the roller 7 so as to be movable in the radial direction of the turntable 2. That is, the support body is provided with three roller shafts 15 that are considerably longer than the width of the roller 7, and the roller 7 is pivotally supported on the roller shafts 15. In this case, the roller 7 is It is movable in the radial direction of the turntable 2 within a length of 15. Then, the roller 7 moves along the groove 12 in the same manner as described above, and sufficient microwave stirring is performed by the reflector 13 provided on the roller 7, thereby significantly preventing uneven heating.

Although the microwave reflector 13 is provided within the roller 7, it may also be a microwave reflector 16 provided protruding from the roller 7 as shown in FIG. In this case, such a reflector 16
has an oval shape that is more complex than a circular shape, and its microwave stirring effect is even better.

Further, a microwave reflector may be constructed by mixing metal powder in the roller 7.

(f) Effects of the invention According to the invention, the moving path of the roller that rotatably supports the turntable is made non-circular with respect to the rotation center of the turntable, and the microwave reflector that moves with the roller is Because of this provision, sufficient microwave stirring can be performed, and in combination with the rotation of the turntable, uneven heating of food can be significantly suppressed, making it possible to obtain an extremely practical microwave oven.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of a microwave oven according to an embodiment of the present invention, Fig. 2 is a perspective view of the same main part, Fig. 3 is a plan view of the same main part, and Fig. 4 is a cross-section of a microwave oven according to another embodiment of the present invention. 5 is a front view of the same main part, and FIG. 6 is a perspective view of another main part corresponding to FIG. 5. 1... Heating chamber, 2... Turntable, 7... Support roller, 9, 14... Roller support, 11, 13, 1
6...Microwave reflector, 112...Groove.

Claims (1)

[Scope of utility model registration request] A heating chamber to which microwaves are supplied, a turntable on which food is placed and rotated within the heating chamber, and a support roller that rotatably supports the turntable and moves around the center of rotation of the turntable. a roller support member that supports the support roller movably in the radial direction of the turntable; a microwave reflector that moves in the radial direction of the turntable together with the support roller; A microwave oven characterized by comprising a path determining means that makes the path non-circular with respect to the center of rotation of the turntable.