JPH0579305U - Cooking device - Google Patents

Abstract

(57) [Abstract] [Object] The present invention relates to a cabinet heat insulating device in a cooking device that heats or cooks an object to be cooked by high-frequency heating or a heater. In addition, it aims to save labor by mass production. [Structure] The present invention includes a case body 1 and an oven frame 3
A heat insulating molded body 21 made of a ceramic fiber containing alumina / silica is provided between the heat insulating molded bodies 21, and a heat insulating air layer 22 is formed on the upper and lower surfaces of the heat insulating molded body 21 by a plurality of ribs 21a and 21b.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a heating and cooking device for cooking an object to be cooked by high-frequency heating or a heater, and more particularly to a heat insulating device for a cabinet in the heating and cooking device.

[0002]

[Prior Art]

 The heat insulation device of the cabinet in the heating cooking device of this type which has been already proposed is configured as shown in FIGS. 6 and 7.

That is, in FIG. 6 and FIG. 7, a case body (cabinet) 1 formed in a box shape is provided with an oven frame body 3 forming an oven 2 and a machine room 4. A drive motor 5 is installed on the bottom plate 3 a of the body 3. The output shaft 5a of the drive motor 5 penetrates through the bottom plate 3a and projects into the oven 2. The output shaft 5a is rotatably supported by a turntable 6 on which a food W is placed. It is equipped. An opening / closing door 7 that opens laterally is hinged to the front opening of the case body 1 so as to be openable / closable. An operation panel 8 is attached to the front surface of the case body 1 near the opening / closing door. Has been done.

On the other hand, an excitation port 9 is formed in the middle of the side plate 3b of the oven frame 3, and the waveguide 10 is installed in the side plate 3b where the excitation port 9 is located. Is attached so as to cover. A well-known magnetron 11 is attached to one end 10a of the waveguide 10 so as to heat the food W to be cooked, and the machine room 4 in which the magnetron 11 is located has a propeller. A fan 12 is provided so as to cool the magnetron 11 and a control circuit board (not shown).

On the other hand, a lower heater 13a and an upper heater 13b are attached to the bottom plate 3a and the top plate 3c of the oven frame 3 so as to connect the case body 1 and the oven frame 3 to each other. In the space, each heat insulating member 14 is additionally provided so as to surround each side wall of the oven frame 3, and each heat insulating member 14 attaches a flat heat insulating material 16 to a fixed dish plate 15 having a substantially rectangular shape. It has been configured. On the upper surface of the heat insulating member 14 located on the top plate 3c, a plurality of wind direction plates 17 are formed in a divergent manner, and in the machine room 4 beside the wind direction plates 17, a sirocco fan 18 is arranged above. The exhaust heat from the heater 13b is provided so as to be discharged to the outside of the machine along the wind direction plates 17 described above.

Therefore, in the cabinet heat insulation device in the above-described heating and cooking apparatus, when the object to be cooked is subjected to high-frequency heating, by energizing the magnetron 11 and the driving motor 5, the driving motor 5 drives the object W to be cooked. At the same time as rotating the placed turntable 6, the electric wave from the magnetron 11 is used to heat and cook the food W in the oven 2 through the waveguide 10 and the excitation port 9, and at the same time, the propeller fan 12 and the sirocco fan. 18 is also driven to cool the magnetron 11, the control circuit board (not shown), and the like, and exhaust heat of the oven frame 3 is discharged to the outside along the wind direction plates 17.

On the other hand, at the time of heating and cooking the food to be cooked, exhaust heat from the lower heater 13a and the upper heater 13b also drives the propeller fan 12 and the sirocco fan 18 to drive the magnetron 11 and a control circuit board (not shown). ) And the like, and the heat of the oven frame 3 is radiated to the outside of the machine along the wind direction plates 17.

As described above, in the heat insulating device for the cabinet in the above-described heating and cooking device, the temperature inside the oven (oven) is getting higher, and the outer wall of the case body (cabinet) 1 is predicted to be touched by the user, and the temperature is lowered. I am letting you.

[0009]

[Problems to be solved by the device]

 However, in the heat insulating device of the cabinet in the above-described heating and cooking device, each heat insulating member 14 is configured by bonding the flat heat insulating material 16 to the fixed dish plate 15 having a substantially square shape. Not only is it necessary to bend a predetermined part along the side wall and fix it with multiple setscrews, but also the number of assembly steps is large, assembly adjustment is troublesome, and labor saving by mass production is difficult. ..

The present invention has been made in view of the above-mentioned circumstances, and a heat insulating molded body made of ceramic fiber is provided between the case main body and the oven frame, and a plurality of ribs are provided on the upper and lower surfaces of the heat insulating molded body. It is an object of the present invention to provide a heating and cooking device that improves heat insulation efficiency by forming layers, facilitates assembly and adjustment, and saves labor in mass production.

[0011]

[Means for Solving the Problems]

 According to the present invention, a heat insulating molded body made of ceramic fiber containing alumina / silica is provided between the case body and the oven frame, and a heat insulating air layer is formed on the upper and lower surfaces of this heat insulating molded body by dividing it with a plurality of ribs. It was done.

[0012]

[Action]

 The present invention rotates the turntable on which the food W is placed by energizing the magnetron and the drive motor during cooking of the food to be cooked, and at the same time the electric wave from the magnetron causes the oven to move. In addition to heating and cooking the food to be cooked inside, the propeller fan is driven to release the exhaust heat of the magnetron, control circuit board, etc. to the outside of the machine, and a heat insulation molded body made of ceramic fiber between the case body and the oven frame. The heat insulation is performed by each adiabatic air layer to improve the heat insulation efficiency of the case body (cabinet).

[0013]

【Example】

 Hereinafter, the present invention will be described with reference to illustrated embodiments.

The present invention will be described by giving the same reference numerals to the same components as those of the above-described specific example.

In FIGS. 1 to 3, reference numeral 1 denotes a box-shaped case main body (cabinet), and inside the case main body 1, an oven frame 3 having an oven 2 and a machine room are formed. 4 is provided, and a drive motor 5 is installed on the bottom plate 3 a of the oven frame 3. An output shaft 5a of the drive motor 5 penetrates the bottom plate 3a and projects into the oven 2. A turntable 6 on which a food W is placed is rotatably mounted on the output shaft 5a. Has been done. Further, an opening / closing door 7 that opens laterally is hinged to the front opening of the case body 1 so that it can be opened and closed. An operation panel 8 is attached to the front of the case body 1 near the opening / closing door. It is set up.

On the other hand, an excitation port 9 is formed in the middle of the side plate 3b of the oven frame 3, and the waveguide 10 is provided in the side plate 3b where the excitation port 9 is located. Is attached so as to cover the. A well-known magnetron 11 is attached to one end 10a of the waveguide 10 so as to heat the food W to be cooked, and the machine room 4 in which the magnetron 11 is located has a propeller. The fan 12 is provided to cool the magnetron 11, the control circuit board (not shown), and the like.

On the other hand, a heating element 20 by a heater is attached to the top plate 3c of the oven frame 3 and is provided in the space between the case body 1 and the top plate 3c of the oven frame 3. Is provided with a heat-insulating molded body 21 made of ceramic fiber containing about 30 to 50% of alumina (Al2 O3) and about 40 to 70% of silica (SiO2) in pressure contact with the heating element 20. A heat insulating air layer 22 is formed on the upper and lower surfaces of the heat insulating molded body 21 by being divided into a plurality of ribs 21a and 21b. As shown in FIG. 3, each rib 21a on the upper surface of the heat insulating molded body 21 is formed. Also serves as a wind vane.

That is, each rib 21a on the upper surface of the heat insulating molded body 21 is formed by diverging a plurality of airflow direction plates, and the airflow direction plates 21a are propeller fans 12 and the magnetron 11 and the heating elements 20 and control. It is provided so that the exhaust heat from a circuit board (not shown) or the like is discharged to the outside of the machine along each of the wind direction plates 21a.

The operation of the present invention will be described below.

Therefore, by energizing the magnetron 11 and the drive motor 5 during cooking of the cooked object, the drive motor 5 rotates the turntable 6 on which the cooked object W is placed, and at the same time, the magnetron. The cooked food W in the orb 2 is heated and cooked by the radio wave from 11, and the propeller fan 12 is driven to radiate the exhaust heat of the magnetron 11 and the control circuit board to the outside of the case body 1 The heat insulating molded body 21 made of ceramic fiber and the heat insulating air layers 22 between the oven frame 3 and the heat insulating air layer 22 are used to improve heat insulation efficiency, and even if the user touches the case body 1, it is safely insulated.

Next, in another embodiment of the present invention shown in FIG. 4, about 30 to about 30% of alumina (Al 2 O 3) is added to the space between the case body 1 and the top plate 3 c of the open frame 3. A heat insulating molded body 21 made of ceramic fiber containing about 50% of silica (SiO2) of about 40 to 70% is provided in pressure contact with the heat generating body 20, and a heat insulating air layer 22 is formed on the upper surface of the heat insulating molded body 21. Are formed by being divided by respective ribs 21a, and each rib 21a 'on the upper surface of the heat insulating molded body 21 also serves as a wind direction plate.

That is, each rib 21 a ′ of the heat insulating molded body 21 is formed by spreading a plurality of wind direction plates toward the end, and the wind direction plate 21 a ′ is the propeller fan 12 and the magnetron 11, the heating element 20 and the control circuit board. The exhaust heat (not shown) or the like is provided so as to be discharged to the outside of the machine along each of the wind direction plates 21a.

Finally, according to another embodiment of the present invention shown in FIG. 5, a heat insulating molded body 21 having a heat insulating air layer 22 is provided outside the oven frame 3 so as to surround the oven frame 3 by box molding. It is true.

That is, in this embodiment, the heat insulating molded body 21 is preliminarily divided into two and molded, and at the time of assembly, the two heat insulating molded bodies 21 are formed into a box shape, and the heat insulating molded body 21 is formed. An adiabatic air layer 22 is formed on the outer side surface by being divided by a plurality of ribs 21a.

As shown by the chain line in FIG. 1, it is possible to change the design so that the heat insulating molded body 21 having the heat insulating air layer 22 is additionally provided on the side surface or the bottom surface of the oven frame 3. is there.

[0026]

[Effect of the device]

 As described above, according to the present invention, a heat insulating molded body made of ceramic fiber containing alumina / silica is provided between the case body and the oven frame, and a plurality of heat insulating air layers are provided on the upper and lower surfaces of this heat insulating molded body. Since it is divided by ribs, it does not need the blower such as the already proposed sirocco fan, it also improves the heat insulation efficiency, facilitates assembly adjustment and saves labor by mass production. It has an excellent effect that it can be realized.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a heating and cooking device of the present invention.

FIG. 2 is a cross-sectional view taken along the chain line AA of FIG.

FIG. 3 is an exploded perspective view showing an essential part of the heating and cooking device of the present invention.

FIG. 4 is a sectional view showing another embodiment of the present invention.

FIG. 5 is an exploded perspective view showing still another embodiment of the present invention.

FIG. 6 is a cross-sectional view of a heating and cooking device that has already been proposed.

FIG. 7 is a plan view of the same.

[Explanation of symbols]

 1 Case Main Body 2 Oven 3 Oven Frame 21 Heat Insulation Molded Body 21a, 21b Rib 22 Insulation Air Layer

Claims (3)

[Scope of utility model registration request] 1. A heat insulating molded body made of ceramic fiber containing alumina / silica provided between a case main body and an oven frame, and heat insulating formed by a plurality of ribs on the upper and lower surfaces of the heat insulating molded body. A heating and cooking device comprising an air layer. 2. The heating and cooking apparatus according to claim 1, further comprising a heat insulating molded body provided by pressing a heating element against a top plate of the oven frame. 3. The cooking apparatus according to claim 1, further comprising a heat insulating molded body having a heat insulating air layer formed outside the oven frame so as to surround the oven frame by molding in a box shape.