JPS60256419A - Rice cooker - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a rice cooker that can deliciously cook germ rice, brown rice, etc. in addition to white rice.

[Prior art]

Recently, interest in healthy food has increased, and more and more people are regularly using germ rice and brown rice, which contain more vitamins and minerals than white rice. However, if you cook rice with a conventional rice cooker that automatically performs the preheating, cooking, and shading processes, the preheating time is short, and the rice that has been cooked has a core that remains and feels hard. was there.

[Summary of the invention]

The present invention has been made in order to eliminate the above-mentioned conventional drawbacks.It is a rice cooker that automatically performs each process of heating, preheating, cooking, and steaming rice, and has two rice cooking modes. The purpose of this mode is to provide a rice cooker that can cook germ rice, brown rice, etc. in a higher preheating process than in other rice cooking modes. .

[Embodiments of the invention]

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

FIG. 1 shows the configuration of the rice cooker according to this embodiment, including a boiler,
2 is a heating element that heats from the entire bottom of the pot 1; 3 is a mode selection switch that selects all rice cooking modes; a temperature detector that detects the bottom temperature of the 4-pot pot 1; 5 is a rice cooking mode selection device; and 6 is a preheating temperature determining device. , 7 is a temperature detection means, and 8 is a heating amount control means. The preheating temperature is determined by the preheating temperature determining means 6 based on the output of the rice cooking mode selecting means 5 which receives the signal from the mode selection switch 3, and the temperature detecting means 7 inputs all the detection signals of the temperature detector 4. The temperature of the pot 1 is measured, and the heating amount control means 8 controls the heating element 2 based on the output.
The amount of heating is controlled.

:) Figure 2 shows a cross-sectional view of the rice cooker, with reference numeral 12 the outer box in which the pot 1 is housed, 13 the lid of the pot 1, and 11 the bottom of the outer box 12 (with the provided heat shield plate). A heating element 2 consisting of an electric heater is provided on the upper part of the heat shield plate 11.
A temperature detector 4 is provided at the center of the pot 1 so as to be in contact with the bottom of the pot 1.

9 is an operation panel attached to the lower outer surface of the outer box 12;
A mode selection switch 3 is provided on its outer surface, and a control device 10 is provided inside the operation panel 9.

FIG. 3 shows an electrical connection diagram of the rice cooker, and 18 is a microcomputer incorporating an A/D converter 19, an input circuit 20, a memory 21, a CPU 22, and an output circuit 23. Reference numeral 14 denotes a rice cooking mode selection circuit, which is composed of a mode selection switch 3 and a resistor 15, and its output is connected to an input terminal 25 of an input circuit 20. 16 temperature detectors 4 and resistors 1
7, and the output analog voltage is inputted to the input terminal 24 of the KA/D converter 19 for conversion into a total diisotal value. Further, the output circuit 23 is connected to a transistor 27 via a resistor 26, and □Transistor 2
A relay 28 is connected between the heating element 2 and the Vc power supply terminal 30, and the contacts of the relay 28 are connected to a commercial frequency power supply 31 via the heating element 2.

29idfi rice mode selection circuit 14, voltage dividing resistor circuit 16
This is a Vss power supply terminal that serves as a power source for the Oyohi microcomputer 18.

Next, the operation of the above device will be explained using FIG. 4. Fourth
The figure is a 71:l-chart showing a preheating temperature selection program for the preheating process stored in the memory 21. This preheating step is a step in which the rice is preheated at a predetermined temperature for a predetermined time to allow the rice to absorb sufficient water. It is generally known that the higher the temperature, the faster the absorption time. First, when cooking white rice, start by short-circuiting the mode selection switch 3. In the Stella 7" 32, the input terminal 25 is High, so the process goes to step 33. In the Stella F33, the temperature of the pot 1 is completely constant, t1°C, for example. The temperature of the pot 1 is measured by the voltage dividing resistor circuit 16, the A/D converter 19, and the input circuit 20, and the heating body 2 is kept at a constant temperature by the output circuit 23, the resistor 26, the transistor 27, and the relay 28VC. tx”c. Next, in step 34, when the preheating time To, for example, 17 minutes has elapsed,
The preheating process for white rice cooking mode is completed. Next, if you want to cook all the germ rice or brown rice, start by opening the mode selection switch 3, and in step 32, the input terminal 25
Since is LOW, the process advances to step 35. Step 35
Then, the temperature of the pot 1 is heated to a constant temperature t2°C, for example, 45°C, and in step 36, when the preheating time To has elapsed, the preheating process in the germ rice or brown rice cooking mode is completed. The preheating flow rate t2 is higher than the preheating temperature tl < (tz >tl)
It is set.

In the above embodiment, the heating body 2 is driven by electric energy, but it is also possible to drive it by other energy such as gas. For example, in a rice cooker that uses gas as an energy source, a burner may be used as the heating element 2, and instead of the relay 28, a valve or the like may be used to adjust the amount of gas.

〔Effect of the invention〕

As described above, according to the present invention, in a rice cooker that automatically performs a preheating process, a rice cooking process, and a steaming process, two rice cooking modes are provided, and the preheating temperature in the preheating process of one rice cooking mode is set to the preheating temperature in the preheating process of the other rice cooking mode. Since the preheating temperature for white rice is also high, it is possible to increase the preheating temperature for germ rice and brown rice, and the pre-soaking of germ rice and brown rice is sufficiently done, and not only white rice but also white rice can be pre-soaked. You can also easily cook germ rice and brown rice.

[Brief explanation of the drawing]

1 to 3 are a block diagram, a vertical front view, and an electrical connection diagram of a rice cooker according to the present invention, respectively, and FIG. 4 is a flowchart showing the operation of the rice cooker according to the present invention. DESCRIPTION OF SYMBOLS 1... Pot, 2... Heating body, 3... Mode selection switch, 4... Temperature detector, 5... Rice cooking mode selection means, 6... Preheating temperature detection means, 7... - Temperature detection means, 8... heating amount control means. Note that the same reference numerals in the figures indicate the same or corresponding parts. Agent Masuo Oiwa Figure 1 Figure 2 Figure 4 Figure 4

Claims (2)

[Claims] (1) In a rice cooker that automatically performs a preheating process, a rice cooking process, and a steaming process, there is a rice cooking mode selection means that selects all two rice cooking modes, and a preheating temperature that determines all preheating temperatures according to the output of the rice cooking mode selection means. A determining means and a control means for controlling the heating means of the pot so that the preheating temperature in the preheating step in one rice cooking mode is higher than the preheating temperature in the other rice cooking mode according to the output of the preheating temperature determining means. Characteristic rice cooker. (2) One of the rice cooking modes is whole germ rice cooking mode;
The other rice cooking mode is set to white rice cooking mode.The other rice cooking mode is set to white rice cooking mode.