JPH0527834Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Industrial Application Field) The present invention relates to a microwave oven for cooking food, and particularly relates to an oven heating device for this microwave oven.

(Prior Art) This type of microwave oven heating device that has already been proposed is configured as shown in FIG.

That is, in FIG. 5, inside the box-shaped case body (cabinet) 1 of the microwave oven,
An oven frame 2 having a rectangular tube shape is provided to form an oven 3, and an opening/closing door 4 is hinged to the case body 1, where the opening of the oven 3 is located, so as to be openable and closable. An operation panel 5 is attached beside the opening/closing door 4. Further, a rotating plate 6 is rotatably mounted on the bottom plate 2a of the oven frame 2, and a lower heater 7 is installed in the oven 3 located between the rotating plate 6 and the bottom plate 2a. It is provided. In addition, this lower heater 7
An upper heater (not shown) is disposed above the heater.

Therefore, the above-mentioned microwave oven heating device places the to-be-cooked item W on the rotary plate 6, and heats the to-be-cooked item on the rotary plate 6 by energizing the upper and lower heaters 7. I try to cook food W.

(Problems to be Solved by the Invention) However, the heating device for the microwave oven described above requires that the rotating plate 6 be removed when cooking in the oven or on the grill, and moreover, the heating device uses a sheathed heater. In this case, the inside of the oven becomes narrow, which makes cleaning difficult, and there is also a risk of forgetting to remove the rotary plate 6 when cooking in the oven or on the grill.

The present invention was made in view of the above-mentioned circumstances, and includes forming a recess in the bottom plate of the oven frame.
A rotary plate body equipped with a heat-resistant support plate is sunk in the recess, so that cooking can be carried out without removing the rotary plate 6 during oven or grill cooking,
Moreover, it is an object of the present invention to provide a microwave oven in which the cleaning inside the oven is improved.

[Summary of the idea]

(Means for Solving the Problems and Their Effects) The present invention involves forming a recess in the bottom plate of an oven frame forming an oven, and inserting a rotating shaft into the bottom plate, where the recess is located, through the bottom plate. A rotary plate body provided to protrude inward and provided with a heat-resistant support plate is mounted on the rotary shaft so as to be sunk into the recess,
A planar heating element is provided below the heat-resistant support plate, a metal case is provided outside the rotating plate, a radio wave attenuation gap is formed between the metal case and the bottom plate where the recess is located, and the rotating body In addition to making it possible to perform cleaning work while wearing the oven, the effective usable capacity of the oven is increased, and the radio waves from the oven are attenuated by the radio wave attenuation gap formed between the oven and the bottom plate. This prevents the motor from overheating.

(Example) Hereinafter, the present invention will be described with reference to an illustrated example.

In addition, the present invention will be described with the same reference numerals attached to the same constituent members as in the above-described specific example.

In FIGS. 1 to 3, reference numeral 1 denotes a box-shaped case body for a microwave oven, and inside this case body 1, an oven frame 2 having a rectangular tube shape forms an oven 3. A recess 8 is formed in the bottom plate 2a of the oven frame 2. Further, a drive motor 9 is provided on the back side of the bottom plate 2a where the recess 8 is located, and an output shaft (hereinafter referred to as a rotating shaft) 10 of the drive motor 9 is connected to the bottom plate 2a of the recess 8 and The oven 3 passes through a planar heating element 13 to be described later.
It is provided so as to protrude inward. Further, a rotary plate body 12 having a heat-resistant support plate 11 made of glass, ceramic, etc. is fitted into the rotating shaft 10 so as to be sunk into the recess 8, and the rotary plate body 12 is fitted in the center of the heat-resistant support plate 11. As shown in FIG.
It is removably engaged with 0a. Furthermore, a planar heating element 13 is provided below the heat-resistant support plate 11, and this heat-resistant support plate 13 has a flat disc-shaped mica insulating plate 13a and a band heater 13.
This heat-resistant support plate 13
is placed on a stationary support plate 14.

Further, a plate-shaped metal case 17 is provided on the outside of the rotary plate body 12 so as to surround the planar heating element 13, and this metal case 17 and the bottom plate 2a where the recess 8 is located are connected to each other. A radio wave attenuation gap 18 is formed between the metal case 1 and the metal case 1.
A radio wave attenuating gap 18 between the oven 3 and the bottom plate 2a attenuates the radio waves from the oven 3 and the drive motor 9
prevents overheating.

Note that the lead terminal 13a of the sheet heating element 13
is connected to an electric circuit (not shown).

Therefore, when cooking in the microwave, the food to be cooked is placed on the heat-resistant support plate 11 of the rotary plate body 12, the drive motor 9 is driven to rotate the rotary plate body 12, and the magnetron (not shown) is rotated. The food to be cooked in the oven 3 is overheated by being energized.

In addition, in the case of oven or grill cooking, the rotary plate body 12 is left mounted on the shaft, and a shelf board 15 on which the food to be cooked is mounted is attached to each crosspiece 2b formed on the inner wall of the oven frame body 2. Then, by energizing the planar heating element 13, the food to be cooked in the oven 3 is overheated.

Next, in another embodiment of the present invention shown in FIG. The planar heating element 13 is made to rotate together with the rotary plate 12 even when cooking in an oven or grill or in a microwave.

[Effect of idea]

As described above, according to the present invention, a recess is formed in the bottom plate of an oven frame forming an oven, and a rotating shaft is provided on the bottom plate where the recess is located so as to penetrate through the bottom plate and protrude into the oven, A rotary plate body equipped with a heat-resistant support plate is mounted on the rotating shaft so as to be sunk into the recess, a planar heating element is provided below the heat-resistant support plate, and a metal case is mounted on the outside of the rotary plate body. Since the planar heating element is provided so as to be enclosed, and a radio wave attenuation gap is formed between the metal case and the bottom plate where the recess is located, cleaning work can be carried out with the rotating body attached. Instead, you can increase the effective usable capacity of the oven.
Moreover, the radio waves from the oven can be attenuated by the radio wave attenuation gap formed between the bottom plate and the bottom plate.
It has excellent effects such as being able to prevent overheating of the drive motor.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the main parts of the microwave oven of the present invention, FIG. 2 is a plan view of the sheet heating element incorporated in the microwave oven of the present invention, and FIG. 3 is a diagram of the drive motor of the present invention. A diagram showing the relationship between the rotating shaft and the heat-resistant support plate,
FIG. 4 is a diagram showing another embodiment of the present invention, and FIG. 5 is a perspective view of a microwave oven that has already been proposed. 2...Oven frame body, 3...Oven, 8...Recessed part,
DESCRIPTION OF SYMBOLS 10... Rotating shaft, 11... Heat-resistant support plate, 12... Rotating plate body, 13... Planar heating element, 14... Support plate.

Claims (1)

[Claims for Utility Model Registration] 1. A recess is formed in the bottom plate of an oven frame forming an oven, and a rotating shaft is provided in the bottom plate where the recess is located, penetrating the bottom plate and protruding into the oven, and A rotary plate body equipped with a heat-resistant support plate on the shaft is mounted on the shaft by sinking it into the recess,
A planar heating element is provided below the heat-resistant support plate, a metal case is provided outside the rotary plate so as to surround the planar heating element, and between the metal case and the bottom plate where the recess is located. A microwave oven characterized by forming a radio wave attenuating gap. 2. The microwave oven according to claim 1, wherein the planar heating element has a band heater wrapped around a flat insulating plate.