JP2574954Y2 - Cooking device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating cooking apparatus for cooking an object to be cooked by high-frequency heating or heating with a heater.
In particular, the present invention relates to a cabinet heat insulating device in the heating cooking device.

[0002]

2. Description of the Related Art Cabinet insulation devices of this type of heating and cooking apparatus which have been already proposed are constructed as shown in FIGS.

In FIG. 6 and FIG. 7, an oven frame 3 having an oven 2 and a machine room 4 are provided in a case body (cabinet) 1 formed in a box shape. A drive motor 5 is provided on the bottom plate 3a of the body 3.
Is installed. The output shaft 5a of the drive motor 5
Protrudes into the oven 2 through the bottom plate 3a, and a turntable 6 on which the object W is placed is rotatably mounted on the output shaft 5a. Further, an opening / closing door 7 that opens sideways is hinged to the front opening of the case body 1 so as to be openable and closable, and an operation panel 8 is attached to the front of the case body 1 near the opening / closing door. Have been.

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

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 that a space between the case body 1 and the oven frame 3 is provided. Each heat insulating member 14 is attached so as to surround each side wall of the oven frame 3, and each heat insulating member 14 is formed by bonding a flat heat insulating material 16 to a substantially square fixed dish plate 15. Things. Further, a plurality of wind direction plates 17 are formed on the upper surface of the heat insulating member 14 located on the top plate 3c so as to expand toward the end. In the machine room 4 beside the wind direction plates 17, a sirocco fan 18 is provided. The heat generated by the heater 13b is provided so as to be discharged to the outside of the machine along the wind direction plates 17.

Therefore, in the heat insulating apparatus for a cabinet in the above-mentioned heating cooking apparatus, the electric power is supplied to the magnetron 11 and the driving motor 5 at the time of high-frequency heating cooking of the object to be cooked, whereby the object to be cooked W is loaded by the drive motor 5. At the same time as the turntable 6 placed is rotated, the electric wave from the magnetron 11 is used to heat and cook the object W in the oven 2 through the waveguide 10 and the excitation port 9.
The propeller fan 12 and the sirocco fan 18 are also driven to cool the magnetron 11, the control circuit board (not shown), and the like, and to discharge the exhaust heat of the oven frame 3 to the outside of the machine along the wind direction plates 17. .

On the other hand, when the object to be cooked is heated by the heater, the heat exhausted by the lower heater 13a and the upper heater 13b is also driven by the propeller fan 12 and the sirocco fan 18 so that the magnetron 11 and a control circuit board (not shown) are used. And the heat of the oven frame 3 is released to the outside along the wind direction plates 17.

As described above, in the above-described heat insulating apparatus for a cabinet in the heating and cooking apparatus, the inside of the oven (oven) is heated to a higher temperature, and the outer wall of the case body (cabinet) 1 is cooled in anticipation of the user's touch. Let me.

[0009]

However, in the above-described heat insulating apparatus for a cabinet in the cooking device, the heat insulating members 14 are formed by bonding a flat heat insulating material 16 to a fixed square plate 15 having a substantially rectangular shape. In relation to this, not only is it necessary to bend a predetermined portion in accordance with the side wall of the oven frame 3 or to fix it with a plurality of set screws,
As a result, the number of assembling steps increases, the assembling adjustment is troublesome, and it is difficult to save labor by mass production.

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 a case body and an oven frame, and a heat-insulating air layer is formed by a plurality of ribs on both upper and lower surfaces. An object of the present invention is to provide a heating and cooking device that is formed to improve heat insulation efficiency, facilitate assembly adjustment, and save labor by mass production.

[0011]

According to the present invention, a heat insulating molded body made of ceramic fiber containing alumina and silica is provided between a case body and an oven frame, and a plurality of heat insulating air layers are provided on both upper and lower surfaces of the heat insulating molded body. The ribs are formed separately.

[0012]

According to the present invention, when heating the cooking object, the magnetron and the driving motor are energized to rotate the turntable on which the cooking object W is mounted, and at the same time, the electric wave from the magnetron is used. In addition to heating and cooking the object to be cooked in the oven, the propeller fan is driven to release the exhaust heat of the magnetron, the control circuit board, and the like to the outside of the machine, and the heat insulation molding by the ceramic fiber between the case body and the oven frame body. Insulate heat with the body and each insulating air layer,
It is intended to improve the heat insulating efficiency of the case body (cabinet).

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

In the present invention, the same components as those of the above-described embodiment are denoted by the same reference numerals.

1 to 3, reference numeral 1 denotes a box-shaped case main body (cabinet), in which an oven frame 3 having an oven 2 formed therein and a machine room 4 are provided. Is provided, and this oven frame 3
A drive motor 5 is installed on the bottom plate 3a. or,
An output shaft 5a of the drive motor 5 penetrates through the bottom plate 3a and protrudes into the oven 2. The output shaft 5a includes:
A turntable 6 on which the object to be cooked W is mounted is rotatably mounted on a shaft. Further, an opening / closing door 7 that opens sideways is hinged on the front opening of the case body 1 so as to be openable and closable.
An operation panel 8 is additionally provided.

On the other hand, an excitation port 9 is formed in the middle of the side plate 3b of the oven frame 3, and a waveguide 10 is provided with the excitation port 9 in the side plate 3b where the excitation port 9 is located. It is attached so as to cover. A well-known magnetron 11 is provided at one end 10 a of the waveguide 10 so as to heat the object W to be cooked. A propeller fan 12 is provided in the machine room 4 where the magnetron 11 is located.
Is provided to cool the magnetron 11, a 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 a space between the case body 1 and the top plate 3c of the oven frame 3 is provided in the space. 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) is provided by pressing the heating element 20 in pressure. On both upper and lower surfaces of the molded body 21, a plurality of ribs 21a,
1b, and as shown in FIG. 3, each rib 21a on the upper surface of the heat-insulating molded body 21 also serves as a wind direction plate.

That is, the ribs 21a on the upper surface of the heat-insulating molded body 21 are formed by expanding a plurality of wind direction plates, and the wind direction plates 21a are formed by a propeller fan 12 for the magnetron 11, the heating element 20, and the control circuit board. (Not shown) or the like is provided so as to release the exhaust heat to the outside of the machine along the wind direction plates 21a.

The operation of the present invention will be described below.

Therefore, when heating the cooking object, the magnetron 11 and the drive motor 5 are energized, so that the drive motor 5 turns the turntable 6 on which the cooking object W is placed.
At the same time, the object W in the orb 2 is heated and cooked by the radio wave from the magnetron 11 and the propeller fan 12 is driven to drive the magnetron 1.
1 and the control circuit board, etc., are discharged to the outside of the machine, and heat is shielded by the heat-insulating molded body 21 made of ceramic fiber between the case body 1 and the oven frame 3 and each heat-insulating air layer 22, thereby improving the heat-insulating efficiency. Even if the user touches the case main body 1, the heat is safely insulated.

Next, another embodiment of the present invention shown in FIG. 4 is a top plate 3c of the case body 1 and the oven frame 3.
And alumina (Al2 O3) in the space between
% And about 40 to 70% of silica (SiO2) are provided by pressing the heat generating element 20 against the heat generating body 20. On the upper surface of the heat insulating molded body 21, a heat insulating air layer 22 is provided on each rib 21a. 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 21a of the heat insulating molded body 21
′ Is formed by expanding a plurality of wind direction plates, and the wind direction plate 21 a ′ is formed by a propeller fan 12, a magnetron 11, the heating element 20, and a control circuit board (not shown).
And the like, so as to discharge the exhaust heat to the outside of the machine along the wind direction plates 21a.

Finally, in 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 in a box shape. It is a thing.

That is, in this embodiment, the heat insulating molded body 2 is
1 is divided into two parts and molded. At the time of assembling, the heat-insulated molded body 21 is formed into a box shape.
The heat insulating air layer 22 is formed on the outer surface of the first member by dividing it with a plurality of ribs 21a.

As shown by a chain line in FIG. 1, the design can be freely changed so that a heat-insulating molded body 21 having the heat-insulating air layer 22 is provided on the side and bottom surfaces of the oven frame 3. .

[0026]

As described above, according to the present invention, the heat-insulating molded body is formed by integrally forming the base and the rib with the ceramic fiber, and the heat-insulating air layers are formed on the upper and lower sides of the base. Therefore, the heat insulating tank can be reliably formed with a simple configuration. Further, since the ribs themselves are also made of a heat insulating material, it is possible to prevent the heat from being transmitted to the ribs and the case body from becoming hot.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of the cooking device of the present invention.

FIG. 2 is a sectional view taken along a chain line AA in FIG.

FIG. 3 is an exploded perspective view showing a main part of the cooking device according to 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 cooking device that has already been proposed.

FIG. 7 is a plan view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case main body 2 Oven 3 Oven frame 21 Insulated molded body 21a, 21b Rib 22 Insulated air layer

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F24C 7/02 511 F24C 15/34

Claims (3)

(57) [Scope of request for utility model registration] An oven frame provided in the case body, and a heat-insulating molded body provided between the oven frame and the case main body, wherein the heat-insulating molded body is made of ceramic. This heat-insulating molded body is composed of a plate-shaped base and ribs integrally provided on the upper and lower surfaces of the base, and a heat-insulated air layer formed by the ribs above and below the base. A cooking device comprising: 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 heating and cooking apparatus according to claim 1, further comprising a heat insulating molded body having a heat insulating air layer formed in a box shape so as to surround the outside of the oven frame.