JP3013737B2 - 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 cooker such as a rice cooker.

[0002]

2. Description of the Related Art In a cooker such as a rice cooker, a container such as a pot is accommodated in an inner frame which is a container accommodating portion provided with a heating means.
The container is heated by a heating means for cooking, and after cooking, the container is removed from the inner frame in order to clean the container and prepare for the next cooking. In this type of cooker, a polyethersulfone-based or fluororesin-based coating has been applied to the outer surface of a container made of aluminum or the like to improve the appearance and cleaning of the container. It has been proposed to form, but such coatings, if not of sufficient hardness, cause the following problems.

[0003] When performing operations such as cleaning a container in a kitchen sink or the like, it is necessary to work on a hard surface such as stainless steel, aluminum with an alumite coating formed thereon, or enameled one. As a result, the outer bottom surface of the container is worn away, the coating is peeled off, the aluminum fabric is exposed, and the appearance is deteriorated. Then, as the use overlaps, the aluminum fabric is scraped, and the degree of exposure increases.

In general, the gap between the side surface of the container and the inner frame becomes wider, so that the heat retaining property is deteriorated. In order to prevent the size of the cooker body with the built-in from becoming excessively large, the minimum portion is set to a gap of about 3 mm or less. The container is easily rubbed. Therefore, in the case where the material of the inner frame is made of aluminum, or in the case where a thin alumite coating of about 4 μm or less is formed on the aluminum, dirt of aluminum adheres to the outer surface of the container and the appearance is deteriorated. On the other hand, in the case where a thick alumite film of about 4 μm or more is formed on the inner frame made of aluminum, the entire surface of the inner frame is hardened by alumina hydrate, so that the coating on the outer surface of the container is easily damaged,
The appearance deteriorates.

Further, a hot plate on which a thick alumite film of about 4 μm or more is formed is provided at a lower portion in the inner frame, the container is placed on the hot plate, and the container is heated by heat conduction from the hot plate. In a cooker, when the container is rotated or moved in the inner frame, the outer bottom surface of the container is worn, the coating is peeled off, the aluminum fabric is exposed, and the appearance is deteriorated.
When the exposure of the aluminum fabric increases due to abrasion, the contact area with the hot plate increases, and the amount of heat conduction changes from the initial stage of use, resulting in excessive heating. As a result, for example, when porridge is cooked, spills may occur, and when rice is cooked, scorching may become more intense.

[0006] When the aluminum material is exposed as described above, corrosion proceeds with use, and there is a fear that deterioration such as opening of a hole in the container may occur. In addition, when blisters or the like are swelled due to corrosion in the exposed portion of the aluminum cloth, contact with the hot plate is deteriorated, and uneven heating of the container is caused, which may deteriorate cooking performance.

[0007]

As described above, in a cooking device in which the outer surface of a container is coated with a plastic material, if the coating does not have sufficient hardness, the outer surface of the container is liable to be stained. However, there is a problem that the coating is easily peeled off and the appearance is deteriorated.

The present invention is intended to solve such problems, and it is possible to prevent dirt from being easily adhered to the outer surface of the container during use, and to suppress peeling of the plastic coating layer on the outer surface of the container. An object of the present invention is to provide a cooker that can prevent inconveniences such as deterioration of appearance from occurring.

[0009]

According to a first aspect of the present invention, there is provided a cooker comprising: a bottomed cylindrical container made of an aluminum material and having a plastic coating layer formed on the inner and outer surfaces; A heating means for heating the container, and a container accommodating portion for detachably accommodating the container, wherein the coating layer is made of a paint containing a FEP resin inside the container and a PTFE resin outside the container after blasting. It is painted.

According to a second aspect of the present invention, in the cooking device of the first aspect, the container has a ceramic layer formed between the coating layer on the outer surface and the aluminum cloth, and a water level line interposed on the inner surface. In which two coating layers were formed.

According to a third aspect of the present invention, in the cooking device of the first or second aspect, the container accommodating portion is made of an aluminum material, and a gap is provided between an inner surface of the container accommodating portion and an outer surface of the container. Is 3 mm or less in the minimum part.

[0012]

According to a fourth aspect of the present invention, there is provided a cooker comprising a bottomed cylindrical container made of an aluminum material and having a plastic coating layer formed on the inner and outer surfaces thereof, and a heating device for heating the container. Means, comprising a container accommodating portion that detachably accommodates the container, the coating layer, after blasting, the inside of the container FEP resin, the outside of the container is coated with a paint containing PTFE resin, When the container with a load of 1 kg is rotated 200 times on a plate on which an alumite film having a thickness of 6 to 8 μm is formed on aluminum, the aluminum cloth of the container is not exposed or slightly exposed. The surface hardness is set in the range to be performed.

[0014]

In the cooking device according to the first aspect of the present invention, during cooking, the container accommodating the object to be cooked is accommodated in the container accommodating portion, and the container is heated by the heating means. After cooking, clean the container,
When preparing for the next cooking, the container is removed from the container container. This container is made of an aluminum material and has a plastic coating layer formed on the inner and outer surfaces, thereby preventing contamination of the pot during use and improving the cleanability of the pot.

In the cooker according to the second aspect of the present invention, even if the plastic coating layer on the outer surface of the container is peeled off, the ceramic layer is provided between the coating layer and the aluminum cloth, so that the aluminum Is not directly exposed.

In the cooker according to the third aspect of the present invention, the gap between the inner side surface of the container housing made of aluminum material and the outer side surface of the container is made as small as 3 mm or less at the minimum, thereby providing heat insulation. , The displacement of the container accommodated in the container accommodating portion can be prevented, and the container accommodating portion can be downsized.

[0017]

In the cooker according to the fourth aspect of the present invention, the surface hardness of the coating layer is set to be less than that of aluminum so that the coating layer on the outer surface of the container does not peel off even if the hard object comes into contact as described above. The above-mentioned container loaded with 1 kg was placed on a plate on which an alumite film having a thickness of 6 to 8 μm was formed,
When rotated, the aluminum cloth of the container is set so as not to be exposed or to be slightly exposed.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the cooking device of the present invention will be described.
This will be described with reference to FIGS. The cooker of the present embodiment is a rice cooker. In FIG. 1, reference numeral 1 denotes a rice cooker main body which is a cooker main body. 3 is provided. The inner frame 3 includes a cylindrical upper inner frame member 4 made of an aluminum material and a bottomed cylindrical lower inner frame member 5 made of an aluminum material coaxially fixed below the upper inner frame member 4. Is composed of
It has a bottomed cylindrical shape as a whole. The lower inner frame member 5 has an upper edge outer peripheral side joined to a lower edge inner peripheral side of the upper inner frame member 4, whereby the upper surface of the lower inner frame member 5 is A horizontal annular pan-mounting portion 6 is formed. An upper frame portion 7 is formed on the upper portion of the outer frame 2 so as to protrude inward and extend over the entire circumference, and the upper edge portion of the upper inner frame member 4 is attached to the frame spacer 8. Has been fixed through. On the other hand, the lower inner frame member 5 is fixed on the bottom plate 9 of the outer frame 2 via a support 10.

11 is A30 excellent in heat conductivity and corrosion resistance
The pot 11 is a container mainly made of a 04 type aluminum material, and the pot 11 accommodates the rice to be cooked, that is, the rice and water to be cooked therein, and is detachable from above in the inner frame 3. It is housed in. The pan 11 is formed in a bottomed cylindrical shape, but has a shape in which the side surface is inclined so that the diameter gradually increases from below to above,
The diameter of the lowermost portion of the outer bottom surface (the portion that contacts this horizontal surface when placed on a horizontal surface such as a table) is less than half the diameter of the lower portion of the outer side surface. Also, at the bottom of the outer surface of the pan 11,
The protrusion 12 is formed over the entire circumference. This protrusion 12
Has a horizontal lower surface resting on the pot placing portion 6 of the inner frame 3. In addition, the lower side of the protruding portion 12 is
The inner peripheral side may form the concave portion 13, but may be entirely flat. Further, a flange-like handle portion 14 protruding outward in a substantially horizontal shape is formed at the uppermost portion of the outer surface of the pan 11. The handle 14 may be formed on the entire outer periphery of the pot 11 or may be formed partially. Then, a gap is formed between the inner side surface of the upper inner frame member 4 and the outer side surface of the pan 11 accommodated therein, and an air layer 15 is formed.
Is formed, but this gap is 3 mm or less in the minimum portion at the lowermost portion.

As shown in FIG. 2, coating layers 17 and 18 are formed on the inner and outer surfaces of the pan 11, respectively, on the surface of an aluminum cloth 16. Here, formation of these coating layers 17 and 18 will be described. The inner surface of the pot 11 is blasted with alumina powder or the like to roughen the surface of the aluminum dough 16, coated with a paint mainly composed of FEP resin, and then dried (at 200 ° C. for about 15 minutes). To form a primer layer. Next, a water level line (not shown) is printed at a predetermined position by a pad printing or the like with a paint mainly composed of an FEP resin of a color different from that of the primer layer. Next, after applying a paint mainly composed of transparent PFA resin, the paint is dried (at 380 ° C. for about 20 minutes) and
A coating layer 17 mainly composed of fluoroplastic is formed on the inner surface of the substrate. On the other hand, the outer surface of the pan 11 is blasted with an alumina
Roughening the surface of 16 and mainly using silicone resin
Paint with a paint containing E resin and bake (1
About 5 minutes) to form a hard and smooth coating layer 1
8 is formed with a film thickness of 10 to 40 μm. The coating layer 18 mainly made of a silicone resin-based plastic has a pencil hardness of 2H or more, preferably 3H or more. Either of the coating layers 17 and 18 on the inner and outer surfaces of the pot 11 may be formed first. Further, the color of the primer layer and the color of the coating layer 18 on the outer surface may be of the same color or a different color.
It is preferable in appearance that the boundary between the coating layers 17 and 18 on the inner and outer surfaces located at the outermost peripheral edge of the handle portion 14 on the outer surface is difficult to see.

A rice-cooking heater 21 comprising a sheath heater or the like, which is a heating means for heating the pan 11, is located at a predetermined distance from the pan 11 around the inner bottom surface of the inner frame 3. It is provided via a table 22. On the inner bottom surface of the inner frame 3, a heater plate 23 which is a hot plate located between the rice cooker 21 and the pot 11 above the rice cooker 21 is supported via a plate support 24. This heater plate
23 is supported so as to be able to move up and down, and is constantly pushed upward by a spring (not shown). Then, the heater plate 23 is connected to the pot contact portion 25 around the upper surface thereof.
The pan 11 is placed in line contact. In addition, a gap 26 is formed between the outer surface of the heater plate 23 and the inner surface of the inner frame 3, and the gap 26 allows the pot 11 and the inner frame to be located below the protrusion 12 of the pot 11. The radiant heat of the rice cooker 21 is supplied to a heating space 27 formed between the heater 3 and the heater plate 23. And the heater plate 23
In order to absorb the radiant heat from the rice cooker 21 and improve the heat conductivity to the pan 11, the heat sink is made of an aluminum material. To further improve the absorbency, a black alumite coating containing nickel oxide is formed by secondary electrolysis with a thickness of 4 μm or more. on the other hand,
The inner frame 3 is made of an aluminum material having a high reflection efficiency of the radiant heat from the rice cooker 21, and its surface treatment is performed only by degreasing without alumite treatment or 4 μm or less so that the reflection efficiency is improved. A thin alumite coating is formed to minimize the reduction in reflection efficiency due to the alumite coating.

A body heater 31 such as a cord heater is provided above the outer surface of the inner frame 3 as a heating means for keeping the inner frame 3 warm. A back plate 32 is fixed below the bottom of the inner frame 3, and a temperature sensor 33 is provided on the back plate 32 so as to be vertically movable and urged upward by a spring 34. This temperature sensor 33
Is formed so as to penetrate through the bottom surface of the inner frame 3 and the heater plate 23 and protrude to an upper portion thereof, and elastically contact the outer bottom surface of the pan 11. The temperature sensor 33 has a built-in temperature sensing element such as a negative characteristic thermistor for detecting the outer surface temperature of the pan 11. A power supply board 36 is also provided below the bottom of the inner frame 3. The power supply board 36 forms a power supply circuit and the like of the rice cooker 21 and includes a pot switch.
It also has 37. The on / off lever 38 of the pot switch 37 is linked to the temperature sensor 33 via the switch lever 39. And when the pot 11 is stored in the inner frame 3,
When the temperature sensor 33 is lowered by being pushed by the pan 11 and the pan 11 is taken out, the temperature sensor 33 is raised by being pushed by the spring 34. Is turned on and off, and the presence or absence of the pan 11 is detected. On the other hand, the inner frame 3 and the outer frame 2
A display substrate 41 is provided between the side surfaces of the display frame 41. On the display substrate 41, a display unit 42, a switch 43, and the like exposed on the outer surface of the outer frame 2 are mounted. Further, the outer frame 2 is provided with a cord reel 44 for winding a power cord.

Reference numeral 51 denotes a lid for opening and closing the top opening of the rice cooker main body 1. The lid 51 is rotatably supported by the outer frame 2. The lid body 51 includes an outer lid 52 and an inner lid 55 detachably attached to the lower side of the outer lid 52 via a stud 53 and an inner lid retainer 54. This inner lid 55
Is to open and close the upper surface opening of the pot 11.
Also, on the lower surface on the back side of the outer lid 52, when the lid body 51 is closed,
A seal packing 56 that is in close contact with the handle portion 11 is provided. On the lower surface of the outer lid 52, a lid heater 57 such as a cord heater is provided as a heating unit for keeping the lid 51 warm. The lid heater 57 electrically forms a parallel circuit with the body heater 31. Further, the lid 51 is provided with a steam hole 58.

Next, the operation of the above configuration will be described. To cook rice, first put rice and water in pan 11
After the pot 11 is accommodated in the inner frame 3 of the rice cooker main body 1, the lid
Close 51. The pot 11 accommodated in the inner frame 3 has the protruding portion 12 placed on the pot placing portion 6 of the inner frame 3 and the outer bottom surface placed on the heater plate 23. The heater plate 23 is slightly pushed down against the spring as the pot 11 is placed. In this state, a heating space 27 is formed between the pot 11, the inner frame 3, and the heater plate 23 below the protrusion 12.

In the control of the rice cooking operation and the subsequent warming operation, the pot detected by the temperature sensor 33 is used.
Based on the temperature of 11, etc., the rice cook heater 21, the body heater 31, and the lid heater 57 are controlled to be cut off, and the heating amount is adjusted. In the rice cooking operation in which the pot 11 is heated by the rice heater 21, first, a preheating step for promoting water absorption of rice is performed for a predetermined time. Next, a boiling heating process of bringing water to a boil by strong heating is performed. When boiling is detected from the detected temperature or its gradient, the process proceeds to a boiling continuous heating process in which the amount of heating is reduced and boiling is continued for a sufficient time. Furthermore, when the detected temperature reaches a predetermined temperature of 100 ° C. or more due to the inside of the pan 11 being in a dry-up state, the cooking is finished at this time, the rice cooker 21 is turned off, and the process shifts to the spotting process. . After the rice cooking is completed, the process proceeds to a warming process, and the temperature of the rice in the pan 11 is maintained at a predetermined temperature of about 70 ° C. by heating the body heater 31 and the lid heater 57.

The heating by the rice cooker 21 is based on radiant heat. The heater plate 23 heated by the radiant heat from the cooker 21 heats the bottom of the pot 11 by heat conduction. Heater plate
By being supplied to the heating space 27 via the gap 26 between the outer side surface of the inner frame 3 and the inner side surface of the inner frame 3, the lower part of the side surface of the pan 11 is heated. At this time, since the protruding portion 12 of the pan 11 rests on the pan mounting portion 6 of the inner frame 3, the outer surface of the pan 11 and the inner frame 3
The radiant heat is prevented from moving upward from the protruding portion 12 between itself and the inner side surface. Therefore, the upper side of the pot 11 is not heated unnecessarily, and the heating efficiency of the pot 11 is improved. In addition, hot pot 11
Since the lower side of the protruding part 12 receives radiant heat over a large area,
The lower portion of the outer surface of the pot 11 is more efficiently heated. From the above, the outer bottom surface and the lower side surface of the pan 11 are heated in a well-balanced manner, and rice can be cooked evenly.

Further, after cooking rice, when cleaning the pot 11 or preparing for the next rice cooking, the lid 51 is opened and the pot 11 is taken out from the inner frame 3.

According to the configuration of the above embodiment, the pot 11
The plastic coating layers 17 and 18 formed on the inner and outer surfaces of the inside prevent contamination of the pot 11 in use and improve the cleaning property of the pot 11. In particular, by setting the surface hardness of the coating layer 18 on the outer surface to 2H or more in pencil hardness, it is possible to prevent adhesion of dirt to the coating layer 18 and peeling of the coating layer 18 and stabilize cooking performance. become. Hereinafter, this will be described in detail. First, based on Table 1, the results of experiments on the relationship between the hardness of the coating layer 18 on the outer surface of the pot 11 and wear and dirt during use will be described.

[0030]

[Table 1]

In Table 1, the surface hardness is pencil hardness. The condition (a) is as follows: a load of 1 kg is placed in the pan 11;
The pan 11 is rotated 200 times on a plate in which an alumite film having a film thickness of 6 to 8 μm is formed on aluminum. The condition (b) is as follows. A 1 kg load is placed in the pan 11 and stainless steel (SU
The pan 11 is reciprocated 200 times (stroke 100 mm) on the plate made of S304). The condition (c) is that the pot 11 is brought into and out of the inner frame 3 200 times by bringing the outer surface of the pot 11 into contact with the inner surface of the inner frame 3 in which an alumite film having a film thickness of 1 to 3 μm is formed on aluminum. is there. Under the conditions (a) and (b), the degree of exposure of the aluminum dough 16 on the outer surface of the pot 11 for each hardness is shown as a result. In the condition (c), the degree of contamination of aluminum on the outer surface of the pot 11 for each hardness is shown as a result.

As shown in Table 1, if the surface hardness of the coating layer 18 on the outer surface of the pot 11 is 2H or more in terms of pencil hardness, the coating layer 18 can be turned on a plate having an alumite film having a thickness of 6 to 8 μm formed on aluminum. , Or even rub on a stainless steel plate,
The coating layer 18 was hardly scraped, as the aluminum fabric 16 was slightly exposed. At the same time, even when the pot 11 is brought into and out of the inner frame 3 by bringing the outer surface of the pot 11 into contact with the inner surface of the inner frame 3 having a thin alumite film having a thickness of 1 to 3 μm formed on aluminum. Was less contaminated. Thus, as a result of the experiment,
It has been found that when the pencil hardness is 2H or more, the risk of exposure of the aluminum cloth 16 due to abrasion and the adhesion of dirt due to the transfer of aluminum can be clearly reduced as compared with the case where the pencil hardness is less than 2H.

Then, for example, on a work table in the kitchen,
Stainless steel, aluminum with anodized aluminum, or enameled
Although there is a hard surface, when performing work such as cleaning of the pot 11 on such a work table, the work table is
As can be seen from the results of the above conditions (a) and (b), even when the outer bottom surface of the pot 11 comes into contact with the outer bottom surface, the outer bottom surface of the pot 11 is worn away, thereby preventing the coating layer 18 from peeling and exposing the aluminum cloth 16 it can. Therefore, it is possible to suppress the appearance from being deteriorated due to the exposure of the aluminum fabric 16. In addition, the degree of increase in the degree of exposure and the degree of exposure can be reduced as the use is repeated.

By the way, the gap between the side surface of the pot 11 and the side surface of the inner frame 3 is widened, so that the heat retaining property is deteriorated. And the inner frame 3 and the rice cooker body 1 incorporating the same
In order to prevent the size from becoming excessively large, the gap is set to about 3 mm or less at the minimum part. for that reason,
When the pan 11 is attached to and detached from the inner frame 3, the container 11 is easily rubbed on the inner frame 3, but the material of the inner frame 3 is made of aluminum, or a thin alumite film of about 4 μm or less is formed on the aluminum. The above condition (c)
As can be seen from the results, the dirt of aluminum hardly adheres to the outer surface of the pot 11, and the appearance can be prevented from deteriorating. Further, even if the inner frame 3 is formed by forming a thick alumite film of about 4 μm or more on aluminum, the coating layer 18 on the outer surface of the pot 11 is hardly damaged and the appearance can be prevented from being deteriorated.

Further, in the rice cooker of the present embodiment, a heater plate having a thick alumite film of about 4 μm or more is formed.
The pot 11 is placed on the top 23 and the pot 11 is heated by heat conduction from the heater plate 23. However, the pot 11 is rotated or moved within the inner frame 3 of the rice cooker main body 1. However, as can be seen from the result of the condition (a), the outer bottom surface of the pot 11 is worn and the coating layer 18 is peeled off, and the aluminum dough 16
Can be suppressed from being exposed. Therefore, it is possible to suppress the appearance from being deteriorated due to the exposure of the aluminum fabric 16. If the exposure of the aluminum cloth 16 increases, the contact area between the pot 11 and the heater plate 23 increases, and the amount of heat conduction changes from the initial stage of use, and the heating becomes too strong. There is a risk of causing deterioration of cooking performance, such as when spilling occurs when cooking rice, or when scorching becomes stronger when white rice is cooked. Can be prevented, so that the cooking performance can be prevented from deteriorating due to use.

Further, when the aluminum cloth is exposed to the scale, corrosion may progress with use, and there is a possibility that deterioration such as opening of a hole in the pot 11 may occur, and blisters such as blisters may be formed on the exposed part of the aluminum cloth by corrosion. When this occurs, the contact property with the heater plate 23 deteriorates, and uneven heating of the pan 11 may occur, which may deteriorate cooking performance. However, the rice cooker according to the present embodiment has such a problem. The point can be prevented, and rice cooking can be stably heated for a long time. Thus, a highly reliable rice cooker can be provided.

Note that the present invention is not limited to the above-described embodiment, and various modifications can be made. For example,
The outer surface of the pot 11 is coated with a paint mainly containing silicone resin and containing PTFE resin or the like as in the above-described embodiment. After coating, or after applying anodizing to the aluminum cloth 16 to form an alumina hydrate layer and applying an undercoat, a coating containing a silicone resin as a main component and containing a PTFE resin, or a polyether The undercoat may be coated with a paint mainly composed of sulfone, fluorine resin, or the like to form a hard and smooth coating layer 18 having a pencil hardness of 2H or more, preferably 3H or more on the surface. Good.

In this way, as shown in FIG. 3, if the alumina-based ceramic layer 61 is formed between the coating layer 18 on the outer surface of the pot 11 and the aluminum cloth 16, the coating layer 18 is peeled off by abrasion. Even if you have
The aluminum fabric 16 can be prevented from being directly exposed, and the aluminum material can be prevented from being scraped.

Further, the paint and the manufacturing method for forming the coating layer 18 on the outer surface of the pot 11 are not limited to the above-described embodiment, and the outer surface of the pot 11 of the aluminum cloth 16 has a pencil hardness of 2H. As described above, any suitable paint and manufacturing method can be adopted as long as a film of a plastic paint of preferably 3H or more can be formed. The hardness of the coating layer 18 can be adjusted by setting the paint and the manufacturing method. Of course, the coating layer 18 should be harder, but the brittleness must be low.

Further, in the above embodiment, the projecting portion 12 of the pot 11 is placed on the pot placing portion 6 formed on the inner frame 3, but as shown in FIG. May be in non-contact with the inner frame 3. However, the protruding portion 12 of the pot 11 accommodated in the inner frame 3 is located close to the inner surface of the inner frame 3. In the rice cooker shown in FIG. 4, the heater plate 23 is fixed to the inner frame 3 via the support plate 24, and only the contact portion of the heater plate 23 with the pot 11 receives the load of the pot 11. It is a mounting part.

In the rice cooker shown in FIG. 4 as well, heat from the rice cooker 21 accumulates in the heating space 27 below the concave portion 13, and is above the protrusion 12 between the outer surface of the pot 11 and the inner surface of the inner frame 3. The amount of radiant heat that travels up to less. Therefore, unnecessary heating of the upper portion of the side surface of the pot 11 is suppressed. Thereby, the heating efficiency is improved, and the outer bottom surface and the lower side surface of the pan 11 can be uniformly heated.

Although the above embodiment has been described with reference to a rice cooker as an example, the present invention can be applied to cookers other than rice cookers.

[0043]

According to the cooking device of the first aspect of the present invention, the coating layer formed on the inner and outer surfaces of the container made of aluminum material contains FEP resin inside the container and PTFE resin outside the container after blasting. Since the pot is coated with the used paint, contamination of the pot during use can be prevented and the pot can be cleaned easily.

According to the cooking device of the second aspect of the present invention, since the ceramic layer is formed between the coating layer on the outer surface and the aluminum dough, the aluminum dough remains even if the coating layer is peeled off. There is no direct exposure, and this aluminum fabric can be prevented from being scraped.

According to the third aspect of the present invention, the gap between the inner surface of the container housing made of aluminum material and the outer surface of the container is 3 mm or less at the minimum.
The heat retaining property can be improved, the position of the container accommodated in the container accommodating portion can be prevented, and the container accommodating portion can be downsized.

[0046]

According to the cooking device of the fourth aspect of the present invention, the coating layer formed on the inner and outer surfaces of the container made of an aluminum material, after blasting, is coated with FEP resin inside the container.
The outer surface of the container is coated with a paint containing PTFE resin, and the coating layer on the outer surface is 1 k on a plate formed by forming an alumite film having a thickness of 6 to 8 μm on aluminum.
When the container with the load of g was rotated 200 times, the surface hardness was set in a range where the aluminum cloth of the container was not exposed or slightly exposed. Even if the outer surface of the container rubs against the table for use or the container accommodating portion, the coating layer is hardly peeled off, thereby preventing inconveniences such as deterioration of appearance.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing one embodiment of a cooking device of the present invention.

FIG. 2 is an enlarged sectional view of a part of the container.

FIG. 3 is an enlarged sectional view of a part of a container showing another embodiment of the cooking device of the present invention.

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

[Explanation of symbols]

3 Inner frame (container container) 11 Pot (container) 15 Air layer (gap between inner surface of container container and outer surface of container) 16 Aluminum fabric 17 Coating layer on inner surface of container 18 Outer surface of container Coating layer 21 Rice cooker (heating means) 61 Ceramics layer

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A47J 27/00 103 A47J 36/02

Claims (4)

(57) [Claims] 1. A bottomed cylindrical container made of an aluminum material and having a plastic coating layer formed on the inner and outer surfaces thereof, a heating means for heating the container, and a container accommodating portion for detachably accommodating the container. The cooking device according to claim 1, wherein the coating layer is formed by coating the inside of the container with a FEP resin and the outside of the container with a paint containing a PTFE resin after the blast treatment. 2. The container according to claim 1, wherein a ceramic layer is formed between the coating layer on the outer surface and the aluminum cloth, and two coating layers are formed on the inner surface with a water level line interposed therebetween. Item 2. The cooker according to Item 1. 3. The container accommodating portion is made of an aluminum material, and a gap between an inner surface of the container accommodating portion and an outer surface of the container is 3 mm or less in a minimum portion. Or the cooker according to 2. 4. A bottomed cylindrical container made of an aluminum material and having a plastic coating layer formed on the inner and outer surfaces, a heating means for heating the container, and a container accommodating portion for detachably accommodating the container. After the blasting treatment, the coating layer is formed by coating the inside of the container with a FEP resin and the outside of the container with a paint containing a PTFE resin, and the coating layer on the outer surface has a thickness of 6 to 8 μm on aluminum. A cooking device characterized in that the surface hardness is set in a range where the aluminum dough of the container is not exposed or slightly exposed when the container with a load of 1 kg is rotated 200 times on the plate on which the alumite film is formed.