JP4313250B2 - Cooker - Google Patents

Description

  The present invention relates to a cooking device for heating and baking foods, and more particularly to a cooking device suitable for making sweet potatoes by heating sweet potatoes.

2. Description of the Related Art Conventionally, as a method for cooking sweet potatoes, a method of heating a container such as a drum can into which cobblestone has been added with a burner to make a stone-baked rice cake is widely known. However, because it uses fire, it is not suitable for use in stores such as supermarkets and convenience stores.
Therefore, an apparatus for producing shochu using an electric heat source has been proposed for use in such a store. Patent Document 1 states that "the main body of the apparatus so that the opening is opened and closed by the door" A heating cooking device in which a porous saucer is arranged in a heating chamber arranged inside, and a sweet potato placed on the saucer is cooked by a far-infrared heater and is adjacent to the heating chamber A device is described in which hot air flows into a warming chamber adjacent to the heating chamber to keep the sweet potato cooked by providing a heat radiating hole in the heating chamber (Claim 1).

JP 2003-135284 A

However, the cooking chamber is placed at a high temperature of 200 ° C. or higher when making the shochu. In the conventional electric heating apparatus including the apparatus described in Patent Document 1, sufficient consideration is not given to such high temperature, and the temperature of the apparatus main body exposed to the outside rises, and the main body (housing) It was not enough in terms of handling and safety during use, such as being burned when touched. Moreover, since the apparatus described in Patent Document 1 has a structure in which hot air is caused to flow into the thermal insulation room adjacent to the heating chamber by providing a heat radiating hole on the surface adjacent to the heating chamber, the loss of heat is large and cooking is performed. It took a long time.
The present invention has been made in consideration of the above prior art, and an object of the present invention is to provide a cooking device that is excellent in handling and safety during use and can efficiently cook food by heating.

(1) The invention according to claim 1 includes an outer box, an inner box disposed inside the outer box and containing food to be heated, and a front door for opening and closing the outer box and the opening of the inner box. In a heating cooker equipped with an electric heater for heating food contained in the inner box,
The inner box includes a metal inner surface plate that forms left and right side surfaces, a rear surface, an upper surface, and a bottom surface, and a metal outer surface plate disposed on the outer surface of the inner surface plate with a heat insulating material interposed therebetween, It is arranged so that it does not come into direct contact with the outer plate to insulate heat conduction,
The front door includes a metal inner plate and a metal outer panel disposed outside the inner plate via a heat insulating material. The inner plate and the outer panel are directly connected to insulate heat conduction. Arranged so as not to touch ,
The front end surface portion of the periphery of the opening of the inner box includes a flange portion that is bent so that the inner surface plate and the outer surface plate face each other with a required clearance in the thickness direction of the inner box,
A heat-resistant synthetic resin plate is laminated and fixed to the flange portion via a heat insulating member to form a front end surface portion of the inner box, and the inner surface plate and the outer surface plate are held at a predetermined interval. It is a heating cooker in which a heat-insulating material is filled in a sealed space .
(2) In the invention according to claim 2, the heat insulating member of the flange portion is formed by covering the fibrous heat insulating material with a foam having elasticity and airtightness, and the heat resistant synthetic resin plate is fixed to the flange portion by pressure. heat insulating member is sandwiched the flange portion and the heat-resistant synthetic resin plates is elastically deformed by the clearance is sealed, a cooking device according to claim 1.

(1) In addition to the double structure of the outer box and the inner box, the inner box has a metal inner surface plate that forms the left and right side surfaces, the back surface, the top surface, and the bottom surface, The inner surface plate is provided with a metal outer surface plate disposed on the outer side through a heat insulating material, and the inner surface plate and the outer surface plate are disposed so as not to be in direct contact with each other in order to insulate heat conduction. The door includes a metal inner plate and a metal outer panel disposed on the outer surface of the inner plate via a heat insulating material. The inner plate and the outer panel are in direct contact with each other to insulate heat conduction. Therefore, even if the inner space of the inner box is heated by heating the food, the heat is surrounded by the inner box of the inner box and the front door that surrounds the inner space of the inner box. Stopped and prevents high temperature from being easily transmitted to the outer plate and outer box of the inner box and the outer panel of the front door. Door can be. Therefore, there is no risk of being burned by touching the outer box or the front door, it is excellent in handling and safety during use, and is easy to use in stores such as supermarkets and convenience stores. In addition, food can be efficiently cooked in a short time without losing heat in the inner space of the inner box.
Further, the front end surface of the opening portion of the inner box is provided with a bent flange portion so as to face at a predetermined clearance inner plate and outer plate in the thickness direction of the inner box, respectively, the heat insulating member to the flange portion A heat-resistant synthetic resin plate is laminated and fixed to form a front end surface portion of the inner box, the inner surface plate and the outer surface plate are held at a predetermined interval, and a sealed space between the inner surface plate and the outer surface plate Because of this new heat insulation structure, the inner surface plate and the outer surface plate are fixed in place with each other, and the heat in the inner space of the inner box is reliably transmitted to the outer box. Can be prevented. In addition, the front end surface portion of the inner box is sealed to form a sealed space between the inner surface plate and the outer surface plate. Usually, a fibrous heat insulating material is sealed between the inner surface plate and the outer surface plate. Can be prevented from escaping from the open space. Further, when the inner box is closed, even if the front door comes into contact with the front end surface portion of the inner box, it is difficult for heat to be transferred from the inner surface plate of the inner box to the front door.
( 2 ) In the invention according to claim 2 , the heat insulating member of the flange portion is formed by covering the fibrous heat insulating material with a foam having elasticity and airtightness, and the heat-resistant synthetic resin plate is pressure-bonded and fixed to the flange portion. As a result, the heat insulating member is elastically deformed and sandwiched between the flange portion and the heat-resistant synthetic resin plate, and the clearance is sealed. Intrusion into the space filled with the heat insulating material between the inner surface plate and the outer surface plate is prevented, and the heat insulating property is further ensured. In addition, since the heat insulating member of the flange portion is formed by covering the fibrous heat insulating material with a foam having elasticity and airtightness, the heat insulating member is placed on the flange portion along the front end surface portion of the inner box at the time of manufacturing. Since it only has to be provided around, it is easy to manufacture. The fibrous heat insulating material is not exposed, is securely held in place, and does not collapse and scatter. In addition, the heat insulating member itself can be manufactured using a general-purpose member regardless of dedicated parts, which is advantageous in terms of cost.
The inner box has a configuration in which the outer dimension is formed to fit the inner dimension of the outer box, and is slidably accommodated in the outer box by sliding from the opening of the outer box . Manufacture is easy, and the inner box can be separated from the outer box and removed, so maintenance and replacement are easy.

  The best mode for carrying out the present invention will be described with reference to the accompanying drawings. In each drawing, the same reference numerals are used for the same components, and overlapping descriptions may be omitted as appropriate.

1 is a front view of a cooking device according to a first embodiment, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, and FIG. 3 is a cross-sectional view taken along line BB in FIG.
The heating cooker 1 is disposed inside the outer box 10, the inner box 20 that is disposed inside the outer box 10, and stores the food to be heated, and the front door 30 that opens and closes the openings of the outer box 10 and the inner box 20. And an electric heater 40 for heating food contained in the inner box 20.
The outer box 10 constitutes the frame of the apparatus main body, is formed using a metal plate such as stainless steel, has a rectangular parallelepiped box shape with an open front surface, and the inner box 20 is disposed in the box portion. Has been. The box portion of the outer box 10 in which the inner box 20 is accommodated is formed of an inner panel 11 and an outer panel 12 that are opposed to each other at a required interval on the left and right side surfaces, the back surface, the top surface, and the bottom surface. The space 12 between the inner panel 11 and the outer panel 13 may be filled with a heat insulating material as necessary.

An electric device chamber 15 is provided at the lower part of the outer box 10 and accommodates a thermostat and other electric components 16. Since the electrical component 16 and its connection can be configured using known electrical components and circuits, illustration and description are omitted. It can be configured using a commercial AC power supply (AC100V). As shown in FIG. 1, an operation unit is provided at the lower front portion of the outer box 10. Reference numeral 2 denotes a power switch, 3 denotes a timer, and 4 denotes an energization display lamp.
The electric heater 40 (electric heating element) connected to the electric component 16 is installed in the inner box 20 in the left-right direction. As the electric heater 40, a sheathed heater using a stainless protective pipe is preferably used.
In addition, the upper part of the inner box 20 is provided with a water vapor discharge cylinder 18 that penetrates the inner box 20 and the outer box 10 so that water vapor generated from the food heated during cooking is appropriately discharged. Yes.

The inner box 20 includes a metal inner surface plate 21 that forms the left and right side surfaces, the back surface, the upper surface, and the bottom surface, and a metal outer surface plate 23 that is disposed outside the inner surface plate 21 with a heat insulating material 22 interposed therebetween. I have. The inner surface plate 21 and the outer surface plate 23 are preferably made of stainless steel plates, and are bent as appropriate to connect the plurality of plates so as to form the left and right side surfaces, the back surface, the top surface, and the bottom surface of each plate 21, 23. To. Inside the inner box 20, a shelf board 7 or a tray is appropriately disposed in accordance with the position of the electric heater 40.
The inner box 20 is formed so that its outer dimension matches the inner dimension of the outer box 10 and is slidably received in the outer box 10 by sliding from the opening of the outer box 20. Yes. The inner box 20 is accommodated in the outer box 10 and fixed to the outer box using appropriate means.

  The inner surface plate 21 and the outer surface plate 23 are separated from each other, and a space having a required thickness is formed between the inner surface plate 21 and the outer surface plate 23, and the space is filled with a heat insulating material 22. As the heat insulating material 22, a heat insulating material such as rock wool, glass wool, or ceramic fiber can be used. In view of high temperature heating, ceramic fibers having a high heat resistance temperature (for example, a blanket-like one in which ceramic fibers are needle-processed) and alumina fibers are preferably used in terms of safety and durability.

The inner surface plate 21 and the outer surface plate 23 are disposed so as not to be in direct contact with each other in order to insulate heat conduction. That is, the edges of both plates are cut so that the heat of the inner surface plate 21 is not directly transmitted to the outer surface plate 23.
FIG. 4 is an enlarged cross-sectional view of the front end surface portion of the inner periphery of the opening of the inner box 20. The front end surface of the peripheral edge of the opening of the inner box 20 has a right angle so that the inner surface plate 21 and the outer surface plate 23 face each other with a required clearance t in the inner box thickness T direction (toward the heat insulating material 22). Are provided with flange portions 21a and 23a. The thickness T of the inner box 20 is, for example, 30 to 40 mm, and the clearance (slit) t is about 3 to 10 mm. Since the edges of the inner surface plate 21 and the outer surface plate 23 are cut, a structure for maintaining both plates in a predetermined position while maintaining the clearance t is required. Therefore, in order to realize this, in the present embodiment, the heat resistant synthetic resin plate 26 is laminated and fixed to the flange portions 21a and 23a via the heat insulating member 25 so that the front end surface portion of the inner box 20 is formed. ing. Thereby, the inner surface plate 21 and the outer surface plate 23 do not move and come into contact with each other due to the heat shrinkage of the heat insulating material 22, and the clearance t is also sealed, and the space between the inner surface plate 21 and the outer surface plate 23 is reduced. The heat insulating material 22 is filled in the sealed space.

As shown in FIGS. 5A, 5B, and 5C, the heat insulating member 25 mounted on the flange portions 21a and 23a is formed by covering a fibrous heat insulating material 25a with a foam 25b having elasticity and airtightness. It is desirable to use one. As the fiber heat insulating material 25a, the above-described ceramic fiber or alumina fiber is preferably used. If the fibrous heat insulating material 25a is exposed at the front end surface portion of the inner box 20, it may collapse (spray) and scatter, which is not preferable.
5A shows a substantially circular cross section, FIG. 5B shows a semicircular cross section, and FIG. 5C shows a substantially rectangular cross section. In FIG.5 (b), the code | symbol 25c is a double-sided adhesive tape.
By covering the fiber heat insulating material 25a with the foam 25b having elasticity and airtightness, the fiber heat insulating material 25a is prevented from being exposed, and the sealing and heat insulating properties at the front end surface portion of the inner box 20 are ensured. . The foam 25b having elasticity and airtightness is closed-celled and needs to be able to withstand high temperatures. For example, a silicone rubber-based or fluororubber-based sponge sheet is preferably used. The heat insulating member 25 can be manufactured by winding such a sheet-like foam 25b around the fiber heat insulating material 25a (see FIG. 5A).

  The heat-resistant synthetic resin plate 26 is preferably a synthetic resin plate that can withstand continuous use temperatures of about 250 ° C. For example, an extruded polyether-ether-ketone resin (PEEK) is preferably used. When the heat resistant synthetic resin plate 26 is pressure-bonded and fixed to the flange portions 21a and 23a, the heat insulating member 25 is elastically deformed and is sandwiched between the flange portions 21a and 23a and the heat resistant synthetic resin plate 26, and the clearance t is surely secured. Sealed. In addition, although the crimping | fixing fixation to the flange parts 21a and 23a of the heat resistant synthetic resin board 26 can be performed using the bis | screw 27 as shown, for example in FIG. 4, it is not specifically limited.

  On the front end surface of the peripheral edge of the opening of the inner box 20, on the heat-resistant synthetic resin plate 26, there is a cushioning and heat-resistant packing that comes into airtight contact with the front door 30 when the front door 30 is closed. 28 is provided. The packing 28 is attached via a rail provided on the heat resistant synthetic resin plate 26.

The front door 30 is rotated by the hinge portion 34 to open and close the openings of the outer box 10 and the inner box 20. Reference numeral 38 denotes a handle used for opening and closing.
As shown in FIGS. 2 and 3, the front door 30 includes a metal inner surface plate 31, and a metal outer surface panel 33 disposed on the outer surface of the inner surface plate 31 via a heat insulating material 32. The face plate 31 and the outer face panel 33 are arranged so as not to be in direct contact with each other in order to insulate heat conduction. The heat insulating material 32 can use heat insulating materials, such as rock wool, glass wool, and ceramic fiber, similarly to the heat insulating material 22 mentioned above. In consideration of high temperature heating, ceramic fibers having a high heat resistance temperature (for example, a blanket-like shape in which ceramic fibers are needle-processed) and alumina fibers are preferably used in terms of safety and durability. The outer surface panel 33 is formed by an inner panel 33a and an outer panel 33b facing each other with a predetermined interval. A space 33c between the inner panel 33a and the outer panel 33b may be filled with a heat insulating material as necessary.

An inner side (inner box 20 side) of the inner surface plate 31 of the front door 30 is formed with a notch step portion 31a around it, and this notch step portion 31a opens the inner box 20 when the front door 30 is closed. It comes into contact with a heat-resistant packing 28 provided on the front end surface portion of the peripheral portion. For this reason, it is excellent in airtightness.
A bent portion 31c is formed from the peripheral end surface portion 31b of the inner surface plate 31 connected to the notched step portion 31a so as to face the notched step portion 31a with an appropriate interval. In the bent portion 31c, the inner surface plate 31 is formed. Is attached to the outer panel 33. The attachment may be performed using screws or the like.
The bent portion 31 c does not directly touch the outer surface panel 33 but is fixed to the outer surface panel 33 via the heat insulating member 35 and the heat resistant synthetic resin plate 36. This prevents heat from the inner surface plate 31 from being transmitted to the outer surface panel 33. As the heat insulating member 35, a member having the same structure as the heat insulating member 25 described above may be used. That is, it is desirable to use a fiber heat insulating material coated with a foam having elasticity and airtightness. As the fiber heat insulating material, the above-described ceramic fiber or alumina fiber is preferably used.
The heat resistant synthetic resin plate 36 may be the same as the heat resistant synthetic resin plate 26 described above.

The cooking device according to the present invention is suitable for making sweet potatoes by heating sweet potato, but can also cook various foods such as chestnuts, corn, pizza, chijimi, etc. It is not limited at all.
According to the present invention, even if the inner space of the inner box 20 becomes high temperature by heating food, the heat surrounds the inner space of the inner box 20 and each inner surface plate 21 of the inner box 20 and the front door 30. , 31, and it is difficult to be transmitted to the outer surface plate 23 of the inner box 20, the outer box 10, and the outer surface panel 33 of the front door 30, thereby preventing a high temperature. In the conventional product, the temperature of the main body is so high that it cannot be touched, but in the product of the present invention, both the outer box and the front door are kept at 40 ± 5 ° C., and there is no risk of burns. I was able to operate.

  As mentioned above, although the form for implementing this invention was demonstrated, this invention is not limited to what was mentioned above, It can implement by changing suitably, adding, etc. in the range of the summary of this invention. is there.

1 is a front view of a heating cooker 1 according to Example 1. FIG. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. 4 is an enlarged cross-sectional view of a front end surface portion of the opening portion periphery of the inner box 20. FIG. 3 is a perspective view illustrating a heat insulating member 25. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heating cooker 10 Outer box 20 Inner box 21 Inner surface board 21a Flange part 22 Heat insulating material 23 Outer surface board 23a Flange part 25 Heat insulating member 25a Fiber-like heat insulating material 25b Elasticity and airtight foam 26 Heat resistant synthetic resin board 30 Door 31 inner surface plate 32 heat insulating material 33 outer surface panel 40 electric heater t clearance

Claims (2)

An outer box, an inner box that is disposed inside the outer box and contains food to be heated, a front door that opens and closes the outer box and the opening of the inner box, and heats food contained in the inner box In a heating cooker equipped with an electric heater,
The inner box includes a metal inner surface plate that forms left and right side surfaces, a rear surface, an upper surface, and a bottom surface, and a metal outer surface plate disposed on the outer surface of the inner surface plate with a heat insulating material interposed therebetween, It is arranged so that it does not come into direct contact with the outer plate to insulate heat conduction,
The front door includes a metal inner plate and a metal outer panel disposed outside the inner plate via a heat insulating material. The inner plate and the outer panel are directly connected to insulate heat conduction. Arranged so as not to touch ,
The front end surface portion of the periphery of the opening of the inner box includes a flange portion that is bent so that the inner surface plate and the outer surface plate face each other with a required clearance in the thickness direction of the inner box,
A heat-resistant synthetic resin plate is laminated and fixed to the flange portion via a heat insulating member to form a front end surface portion of the inner box, and the inner surface plate and the outer surface plate are held at a predetermined interval. A heating cooker, in which the sealed space between is filled with insulation . The heat insulating member of the flange portion is formed by covering the fiber heat insulating material with a foam having elasticity and airtightness, and the heat resistant synthetic resin plate is fixed by crimping to the flange portion, whereby the heat insulating member is elastically deformed and the flange portion and it is sandwiched heat-resistant synthetic resin plates, the clearance is sealed cooking device according to claim 1.

Images