JPH0838351A - Rice cooker - Google Patents

Abstract

PURPOSE:To provide a rice cooker by which indica rice can be tastily cooked without getting out of shape because of boiling. CONSTITUTION:This rice cooker 1 is provided with an inner pan 16, basket 17 vertically movably provided inside the inner pan 16, upper lid 7 for the inner pan 16, upper lid temperature sensor 5 for detecting the temperature in the inside of an inner pan 13 just under the upper lid 7, basket elevating means 9 for elevating the basket 17, and heating means 23 for heating the inner pan 16. Further, the rice cooker is provided with a control means with a built-in timer for inputting a temperature signal from the upper lid temperature sensor 5 and controlling the basket elevating means 9 and the heating means 23 based on a previously applied rice cooking program or issuing the operating instructions of respective means to a user. Therefore, rice can be cooked by so-called hot-water cooking (directly soak rice into hot water and discard glutinousness in some cases) suitable for cooking indica rice.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice cooker for cooking rice. In particular, it relates to a rice cooker that can cook deliciously without causing Indica rice to boil down.

[0002]

2. Description of the Related Art In a conventional rice cooker, an appropriate amount of rice and water are put in an inner pot, and the inner pot is heated by gas or electricity to cook the rice. As a result, heat is applied to the rice while absorbing moisture, and the β starch of the rice is converted to α starch. In addition, a temperature sensor that reads the temperature of the bottom of the inner pot automatically extinguishes the fire (rice cooking is completed) when the temperature of the bottom of the inner pot reaches the set value because water is absorbed by rice or evaporated to reduce water content. There is also a rice cooker.

[0003]

In the conventional rice cooker, the water level scale, heat adjustment, and fire extinguishing temperature of the pot bottom are set in accordance with the rice cooked with Japonica. Using such a conventional rice cooker, if you cook Indica rice with different properties from Japonica rice in the same way as Japonica rice, it will become core rice due to insufficient heating. There was a problem that the rice was boiled down because the water volume and fire extinguishing temperature were improper.

It is an object of the present invention to provide a rice cooker which can cook delicious rice without causing the rice of Indica species to be boiled down.

[0005]

In order to solve the above-mentioned problems, the rice cooker of the present invention comprises an inner pot, a colander that can be moved up and down in the inner pot, an upper lid of the inner pot, and an inner lid immediately below the upper lid. It incorporates an upper lid temperature sensor that detects the temperature inside the kettle, a monkey raising and lowering means that raises and lowers the monkey, a heating means that heats the inner kettle, and a timer.The temperature signal from the upper lid temperature sensor is input and given in advance. Based on the cooked rice program, the control device controls the colander raising / lowering means and the heating means, or outputs the operation instruction of each means to the user.

[0006]

When the rice cooker of the present invention having the above structure is used,
Cooking rice including the following cooking can be performed. After the water in the inner pot has boiled, soak the rice in the colander in boiling water. Pull the rice soaked in boiling water out of the water. Steam rice in steam for a specified time. Therefore, the rice can be cooked by the so-called "boiler removal method" suitable for cooking Indica rice.

[0007]

Embodiments of the present invention will be described below. Figure 1
It is sectional drawing which shows the internal structure of the rice cooker which concerns on one Example of this invention. The rice cooker 1 of FIG. 1 is composed of main parts such as an inner pot 16, an upper lid 7, and a gas burner 23 for heating the inner pot bottom 21.

The upper lid 7 closes the upper opening of the inner pot 16. A through hole 11 is opened in the center of the upper lid 7, and a rod 9 passes through the hole 11. Rod 9
The upper handle 3 and the lower colander 17 are connected. An upper lid temperature sensor 5 is attached to the upper lid 7, and the upper lid temperature sensor 5 detects the ambient temperature in the inner pot 13 immediately below the upper lid 7.

A colander 17 is provided in the inner pot 16 so as to be movable up and down. The vertical position of the colander 17 is manually determined by the rod 9 and the handle 3 which are colanding means. FIG. 1A shows a state in which the monkey 17 is raised, and FIG. 1B shows a state in which the monkey 17 is lowered. With the colander 17 raised, pour water 19 on the bottom of the inner pot 16 so as not to soak the rice 15 on the colander 17 in water until the water boils, or to boil the rice 15 with steam of boiling water. You can also steam it.

Next, a rice cooking program when the Indica type rice is cooked by the hot water removing method using the rice cooker shown in FIG. 1 will be described. FIG. 2 is a flowchart showing a rice cooking program when the rice cooker of FIG. 1 is used to cook Indica rice by the hot water removal method.

First, as shown in FIG. 1 (A),
An appropriate amount of water 19 is placed on the bottom of the inner pot 16, and the sharpened rice 15 is placed on the colander 17 and set at a position above the water 19. Then, the ignition button 24 is pressed. Then, a gas valve (not shown) for supplying gas to the burner 23 is opened, and the burner 23 is ignited (S1 in FIG. 2).

When the inner pot 16 is heated by the flame of the burner 23 and the water 19 in the inner pot 16 boils, the temperature detected by the upper lid temperature sensor 5 becomes 100 ° C. (when no pressure is applied) (S
2). Then, the control means (not shown) to which this temperature signal is input sounds a buzzer (not shown). The cook who notices it pushes down the handle 3 (S4).

After that, the rice 15 is boiled in boiling water 19 for 10 minutes (S5). The buzzer is sounded again after 10 minutes have passed (S6). Then the cook 3
Is pulled up (S7). As a result, rice 15 is water 19
And is steamed in steam (S8).
The buzzer sounds again after steaming the rice for 10 minutes (S9).
At the same time, the gas valve closes and the burner flame disappears. This will cook the rice. It should be noted that an actuator for raising and lowering the colander may be provided to automatically raise and lower the colander.

[0014]

EFFECTS OF THE INVENTION As is clear from the above description, the rice cooker of the present invention can shorten the time for boiling the rice of Indica type and the time for steaming it in steam, so that the rice does not collapse. You can cook rice. In addition, rice can be cooked by the so-called hot water removal method, so indica rice can be cooked deliciously. Despite the fact that about 80% of the rice produced in the world is Indica rice, the conventional rice cooker was made with specifications suitable for cooking Japonica rice. The rice cooker of the invention can cook rice in a method most suitable for Indica rice.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an internal structure of a rice cooker according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a rice cooking program when the rice cooker of FIG. 1 is used to cook Indica rice by the hot water removal method.

[Explanation of symbols]

 1 Rice Cooker 3 Handle 5 Upper Lid Temperature Sensor 7 Upper Lid 9 Rod 11 Through Hole 13 Inner Pot 15 Rice 16 Inner Oven 17 Colander 19 Water 21 Pot Bottom 23 Burner 24 Ignition Button

Claims (1)

[Claims] 1. An inner pot, a colander that can be moved up and down in the inner pot, an upper lid of the inner pot, an upper lid temperature sensor that detects the temperature in the inner pot immediately below the upper lid, and a colander that raises and lowers the colander. Means, a heating means for heating the inner pot, and a timer are built in, the temperature signal from the upper lid temperature sensor is inputted, and the colander raising and lowering means and the heating means are controlled based on a rice cooking program given in advance, or Alternatively, the rice cooker is provided with: a control means for issuing an operation instruction of each means to a user.