JPH0315421A - Electric rice cooker - Google Patents

Abstract

PURPOSE:To heat an inner pot from the whole surface and evenly boil rice by putting a heating plate under the inner pot and a heater on a middle pot side surface, and circulating the air between the inner pot having the heater placed thereon and an inner vessel. CONSTITUTION:Rice 4 and water 5 are put in an inner pot 3, which is received in an inner vessel 6 and covered with a cap 1. When an electric current is applied to this rice cooker, a heating plate 7 and a heater 8 are energized, and simultaneously, a fan 9 starts to rotate. Thus, the inner pot 3 is heated from the bottom by the heating plate 7 and further heated from the side surface by circulating the air between the inner pot 3 warmed by the heater 8 and the inner vessel 6, and consequently, the inner pot 3 is evenly heated from the lower and side surfaces. In this embodiment, both the heating plate 7 and the heater 8 are set to 500W. Therefore, no soft boiled rice is formed in the inner pot 3 bottom part.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electric rice cooker, which has an improved structure for cooking delicious rice.

2. Description of the Related Art Conventional electric rice cookers cook rice by heating from the bottom of the inner pot 3 using a heating plate 7 located at the bottom of the inner pot 6, as shown in FIG.

Problems to be Solved by the Invention However, when only the heating plate 7 is heated, as shown in FIG. 3, the portion of the bottom surface of the inner pot 3 that is in contact with the heating plate 7 tends to be strongly heated, resulting in soft rice in the portion a.

As has been said for a long time, the way to cook delicious rice is to start it slowly, then slowly cook it, then slowly cook it, but now with a microcomputer-based heating method, the cooking temperature is closer to the traditional method. Although this can be done almost ideally, it was not possible to completely prevent rice from becoming soft and absorbing too much water, as shown in part a in Figure 3, if cooked at high heat.

Means for Solving the Problems The present invention has been made in order to solve these problems, and includes a heating plate placed under the inner pot, a heater on the side of the inner pot, and an inner pot in which the heater is further placed. A fan circulates the air between the inner pot and the inner pot to evenly heat the sides of the inner pot. Additionally, the heating plate on the bottom of the inner pot reduces the power consumption by about half compared to conventional ones.

Function: With this configuration, the inner pot is heated from below by the heating plate, and the sides of the inner pot are heated by the heater, and the fan circulates the air from the sides so that the entire surface of the inner pot is heated. This allows the rice to be heated evenly.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2.

In the figure, 1 is a lid, and 2 is an inner lid attached to the lid 1. 3 is an inner pot whose top opening is covered by an inner lid 2-@-. Rice 4 and water 5 are placed in the inner pot 3, and a heating plate 7 is provided at the outer bottom. Further, the heating plate 7 has a circular shape having approximately the same size as the bottom surface of the inner pot 3. Reference numeral 6 denotes an inner container, which houses the inner pot 3, and the heating plate 7 is located on the inner bottom surface of the inner container 6. Furthermore, a heater 8 is attached to the inner container 6, located between the inner container 6 and the inner pot 3, and spaced apart from the inner pot 3 by a substantially constant distance. The side surfaces of the inner container 6 are substantially vertical, and the outer diameter of the bottom surface of the inner pot 3 is smaller than the outer diameter of the upper part. Therefore, the gap between the inner container 6 and the inner pot 3 becomes smaller as it goes upwards, and at the top there is a gap of 3 mm or less, which prevents hot air from escaping. If this gap is large, the efficiency of hot air escaping upward becomes poor and uniform heating becomes impossible.

9 is a fan, which is attached to the outer side of the inner container 6;
The contents@6 to which this fan 9 is attached are provided with an air blow hole 6a and a discharge hole 6b. Reference numeral 10 denotes a motor that rotates the fan 9. Reference numeral 11 denotes a self-cooling fan, which suppresses heat generation of the motor 10 and provides durability. Further, 12 is a coat reel.

Next, the operation of the -L configuration will be explained.

Put rice 4 and water 5 into the inner pot 3, store them in the inner container 6, and cover the lid 1. When this rice cooker is energized, the heating plate 7 and heater 8 are energized, and at the same time, the fan 9 starts rotating. Therefore, the inner pot 3 is heated from the bottom by the heating plate 7, and further heated from the side by circulating the air between the inner pot 3 and the inner container 6 heated by the heater 8 by the fan 9, and as a result, the inner pot is heated by the fan 9. 3 is one that is heated evenly from below and from the sides. Further, in this embodiment, both the heating plate 7 and the heater 8 are set at 500 watts. Therefore, the inner pot 3
This also eliminates the possibility of soft rice forming on the bottom.

Effects of the Invention According to the present invention, it is possible to cook rice evenly with strong heat, which was not possible with conventional methods.

First, a heater is placed on the side of the inner pot, and a fan is used to circulate air around the outer circumference of the inner pot, heating from the four sides of the inner pot. This method allows for heating from the entire surface, similar to the traditional ``kamado,'' which allows for even and uniform cooking of rice.

Second, the gap between the inner pot and the inner container is large enough to accommodate the heater at the bottom, and narrowed to 1 to 3 mm at the top to prevent hot air from escaping, improving efficiency and simplifying the structure. It is possible.

[Brief explanation of drawings]

Fig. 1 is a side sectional view of an electric rice cooker showing an embodiment of the present invention, Fig. 2 is a sectional view of the same part broken away, and Fig. 3 is a side sectional view of an electric rice cooker showing a conventional example. . 3. Inner pot, 6. Inner container, 7. Heating plate, 8.
...Heater, 9...Fan.

Claims (4)

[Claims] (1), an inner pot (3) to hold rice and water, and this inner pot (3)
an inner container (6) that houses the inner container (6), a heating plate (7) located on the inner bottom of the inner container (6), and a heater (8) located between the inner side of the inner container (6) and the inner pot (3). ) and inner container (
A fan (9) is attached to the outer side of the heating plate (7) and the heater (8), and the fan (9) is rotated to heat the inner container (6) and the inner pot (3). ) An electric rice cooker that cooks rice by circulating air between them. (2) The inner container (6) side surface is approximately vertical, the inner pot (3) has a bottom outer diameter smaller than the upper outer diameter, and the inner pot (3)
The electric rice cooker according to claim 1, wherein the gap between the outer diameter of the upper part and the inner diameter of the upper part of the inner container (6) is 3 mm or less. (3) The heating plate (7) has a circular shape that is approximately the same size as the bottom of the inner pot (3), and the heater (8) is placed approximately a certain distance from the outer periphery of the side surface of the inner pot (3). 3) The electric rice cooker according to claim 1, wherein the outer periphery of the side surface is surrounded. (4), the output ratio of heating plate (7) and heater (8) is 6
5: The electric rice cooker according to claim 1, wherein the ratio is 4 to 5.