JPH0722538B2 - rice cooker - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a rice cooker having a square-shaped thick pot made of aluminum coated with a fluororesin.

[Prior Art] In recent years, since fluororesin has excellent heat resistance, corrosion resistance, non-adhesiveness, and the like, it is used as a cooking device by being coated on an aluminum substrate.

Also in rice cookers, it is known that the aluminum base of the inner pot is coated with fluorine resin.
Is a square aluminum inner pot made by coating fluororesin on a thin aluminum substrate and pressing it.

Secondly, it is used for pressure heating, and a thick aluminum substrate is coated with a fluororesin in advance, and press working is performed to form a round inner pot.

[Problems to be Solved by the Invention]

Since the first conventional device uses a thin aluminum substrate, it does not damage the fluororesin layer even if it is pressed after coating the fluororesin.
Although it is possible to obtain a satisfactory fluororesin coating as an inner pot, the inner pot becomes thin, so the rice tends to be cold during the unevenness, and there is a problem that it cannot be cooked deliciously.

In order to solve this problem, a thick inner pot is considered as the above-mentioned second conventional device. In the second conventional device, the aluminum substrate is coated with a fluororesin and then pressed. Since the aluminum base is thick, there is a problem that the fluororesin layer is damaged during press working. In particular, it is difficult to press a special shape such as a square kettle or a special shape of the peripheral portion because the fluororesin layer is damaged.

The present invention has been made to solve these problems, and an object thereof is to obtain a rice cooker that can cook rice deliciously and that has a square inner pot with excellent corrosion resistance.

[Means for Solving the Problems]

The rice cooker according to the present invention comprises a square inner pot which is detachably provided in a square outer pot, and a square lid which is provided so as to cover the inner pot. Of the aluminum base and a fluororesin provided on the inner wall of the aluminum base. The fluororesin is coated on the aluminum base before pressing into the inner pot,
Further, the radius of curvature R of the peripheral corner portion of the inner pot is set to be at least 1/5 or more of the distance 1 of the peripheral facing surface of the inner pot.

[Action]

In the rice cooker according to the present invention, since the fluorine resin is coated on the aluminum base before being pressed into a square kettle shape, a uniform fluorine resin layer can be obtained, and the radius of curvature R of the peripheral corner portion of the inner pot is set to the above. Since the distance is 1/5 or more of the peripheral facing surface of the inner pot, the bending of the peripheral corners is soft, and even if a thick aluminum substrate provided with a fluororesin is pressed into a square pot shape, It is possible to prevent the layer from being damaged, and it is possible to obtain a square inner pot with excellent corrosion resistance.

Example of Invention

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, (1) is a square frame, (2) is a square outer pot provided in the frame (1), and (3) is a square detachably provided in the outer pot (2). With the shape of the inner pot,
As specifically shown in FIGS. 2 and 3, the peripheral portion has two horizontal portions (4) and (5) extending horizontally. As shown in FIG. 4, the inner pot (3) is composed of an aluminum base (6) of 2 mm or more and a fluororesin (7) provided on the inner wall of the aluminum base (6), and the fluororesin (7) is a square pot. It is provided on the aluminum substrate (6) before being pressed into a shape.

As shown in FIG. 5, the radius of curvature R of the peripheral corner portion of the inner pot (3) is at least 1/5 or more of the distance l of the facing surface of the inner pot (3). By softening the bending of the portion, the fluorine resin layer is prevented from being damaged when the aluminum substrate (6) provided with the fluorine resin (7) is pressed into a square kettle shape.

The inner pot (3) is manufactured by coating the fluororesin (7) on one side of the aluminum substrate (6) of 2 mm or more shown in FIG. 6 and solidifying it, and then the fluororesin (7) is placed inside. It is manufactured by pressing into a square kettle shape.

(9) is a rice cooking heater provided in a space below the outer pot (2) and the inner pot (3), (10) is a heat sensitive device for detecting the temperature of the inner pot (3), and (11) is an outer pot ( 2) A body heater provided on the outer periphery for keeping heat. (12) is a lid, which has an outer lid (13) and an inner lid (14), and is attached to the frame (1) so that the opening of the inner pot (3) can be opened and closed. With the opening of the inner pot (3) covered with the lid body (12), the inner lid (14) becomes the inner pot (3).
Of the inner stage (3) of the inner pot (3) comes into contact with the paddle (15) provided on the outer lid (13) by contacting the horizontal part (4) of the first stage of I try not to leak.

(16) is a steam vent valve provided in the outer pot (2), and (17) is a lid heater.

In the above-mentioned embodiment, the inner pot (3) is described as the one in which the fluorine resin (7) is provided on the inner wall of the aluminum substrate (6), but as shown in FIG. 7, the fluorine resin has a two-layer structure. As a result, the corrosion resistance can be further improved.

That is, the inner pot (3) was provided on the aluminum base (6) of 2 mm or more, the first fluororesin (71) provided on the inner wall of the aluminum base (6), and the first fluororesin (71). It is composed of a second fluororesin (72), and the first fluororesin (71) and the second fluororesin (72) are both provided on the aluminum base (6) before pressing into a square kettle shape. It is a thing.

Further, in the embodiment shown in FIG. 7, coloring is carried out by mixing a dye into either one of the first fluororesin (71) and the second fluororesin (72). For example, the first fluororesin (71)
When a dye is mixed in, the second fluororesin (72) is transparent, so that a color with a photosensitivity can be produced. When the second fluororesin (72) contains a dye, there is no photoselection on the surface,
It has a high-class feel like handmade and has high commercial value.

The inner pot (3) shown in FIG. 7 is manufactured by first coating the first fluororesin (71) on one side of an aluminum substrate (6) of 2 mm or more, solidifying it, and then adding the second fluorine resin. It is manufactured by coating the resin (72), solidifying it, and then pressing it into a pot shape so that the double fluororesins (71) (72) are on the inside.

〔The invention's effect〕

As described above, according to the present invention, since the inner pot is thickened,
Because the rice is cooked deliciously and coated on the aluminum base before pressing the fluorine resin into a square kettle shape,
A uniform fluororesin layer is obtained, and the radius of curvature R of the peripheral corner portion of the inner pot is at least 1/5 of the distance 1 of the facing surface of the inner pot.
As described above, the bending of the surrounding angle becomes soft, and even if a thick aluminum substrate provided with a fluororesin is pressed into a square kettle shape, it is possible to prevent the fluororesin layer from being damaged and to have excellent corrosion resistance. There is an effect that can be obtained.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a perspective view showing the inner pot thereof, FIG. 3 is a sectional view showing the inner pot of FIG. 2, and FIG. FIG. 5 is an enlarged cross-sectional view of the main part of the inner pot, FIG. 5 is a view for explaining the inner pot of FIG. 2, FIG. 6 is a perspective view showing an aluminum substrate before pressing the inner pot, and FIG. It is an important section expanded sectional view of an inner hook of other examples of the invention. In the figure, (2) is an outer pot, (3) is an inner pot, (6) is an aluminum base, and (7) is a fluororesin. In the drawings, the same reference numerals indicate the same or corresponding parts.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Keiji Sudo 1728 Omaeda, Omaeda, Hanazono-cho, Ozato-gun, Saitama Prefecture Mitsubishi Electric Home Equipment Co., Ltd. (56) Reference JP-A-61-191318 (JP, A) Sho 63-27624 (JP, Y2)

Claims (1)

[Claims] 1. An aluminum base body having a square inner lid which is detachably provided in a square outer pot, and a square lid which is provided to cover the inner pot. And a fluororesin provided on the inner wall of the aluminum base, the fluororesin is coated on the aluminum base before pressing into the inner pot, and the radius of curvature R of the peripheral corner portion of the inner pot is R. Is at least 1/5 or more of the distance l of the surface facing the circumference of the inner pot.