JPS5917318A - 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] The present invention relates to improvements in rice cookers.

Recently, with the aim of cooking rice deliciously, the temperature of the inner pot is measured, and this measured temperature and a microcomputer (hereinafter simply referred to as a microcomputer) are used to control the water absorption process, the cooking process, and the boiling maintenance process. A microcomputer rice cooker has been developed and proposed that controls the rice cooking power during the process, uneven process, etc.

The temperature of the inner pot at the beginning of rice cooking must be at a water temperature suitable for the rice to absorb water; if the temperature is higher than this, the surface of the rice will gelatinize, and the center of the rice will not absorb enough water. It doesn't work, and even if I cook it, I can't make delicious rice.

Therefore, in the conventional microcomputer rice cooker, the temperature of the inner pot is measured at the start of rice cooking, and if the temperature is about 40°C or higher, the rice is switched from programmed microcomputer-controlled rice cooking to normal rice cooking. ing.

However, although this conventional method is effective in cases where the user accidentally washes the rice with hot water, it is not effective when using the rice cooker to restart rice immediately after cooking, or when starting rice cooking immediately after stopping warming. The inside of the rice cooker and a part of the temperature sensor are often warm even when the inner pot temperature is low. At this time as well, the temperature sensor incorrectly determined that the inner pot temperature was high (approximately 40°C or higher), and the rice cooking power was changed to normal rice cooking, which was inconvenient.

The present invention has been made to solve the above-mentioned disadvantages, and its features include an inner pot temperature detector that detects the temperature of the inner pot housed in the inner container, and an output of the inner pot temperature detector. Only when the value is below the specified value after a certain period of time from the start of rice cooking, -
The reason is that it is equipped with a means for supplying a heat source for the cooking process.

- Hereinafter, the present invention will be explained in detail along with examples.

FIG. 1 is a circuit configuration diagram of a rice cooking temperature control section of a microcomputer rice cooker according to an embodiment of the present invention, and FIG. 2 is a sectional view of essential parts of the microcomputer rice cooker.

In Figures 1 and 2, it is a lateral temperature sensor that detects the temperature on the side of the inner pot 7 housed in the inner container 6 of the 1id rice cooker, and it is a sensor that measures the humidity inside the inner pot of the rice cooker. .

Reference numeral 2 denotes a center temperature sensor for detecting the cooking temperature, which is provided at the center of the bottom of the inner pot of the rice cooker, and measures the temperature near the bottom of the pot to detect the end of rice cooking. 3 is a microcomputer installed on the microcomputer board 8, 4 is a rice cooking heater,
5 is a power supply circuit, 9 is a rice cooking heater control section, and 10 is a trier.

Next, the operation of this embodiment will be explained with reference to FIGS. 1 and 2.

The temperature of the inner pot 7 is constantly detected by a lateral temperature sensor 1 and input to the microcomputer 6. As shown in the flowchart of FIG. 3, the microcomputer 3 determines whether or not the water absorption process (degree of temperature) is at a predetermined temperature, for example, 40°C or higher. (X seconds) has elapsed or not. After the predetermined time has elapsed, the temperature of the inner pot 7 is set to 4 again.
It is determined whether the temperature is 0°C or higher, and if the temperature is 40°C or lower, rice is cooked using a microcomputer program. That is, it is determined whether or not the temperature is appropriate for the water absorption process, and if the temperature is not appropriate, the rice cooking heater controller 9. A predetermined power (e.g., A watts, or ■ 3 watts) is supplied to the rice cooking heater 4 via the tria 10.
and heat it. If the temperature is appropriate, water will be absorbed at that temperature. Further, if the temperature of the inner pot 7 after the predetermined period of time is determined to be 40°C or higher, normal rice cooking is performed without using the microcomputer program.

1. Even if the inner pot temperature is lower than the predetermined temperature (40'0), if it is immediately after stopping warming or cooking rice, the side temperature sensor 1
If the inner pot temperature immediately after the start of rice cooking is higher than a predetermined temperature (40°C), the rice cooking heater 4 is turned off, and the inner pot 7 is turned off again after a certain period of time has passed. Measure the temperature of the device to eliminate temperature misjudgments.

Also, in the case of a rice cooker other than a microcomputer rice cooker that has a gradual process, if the temperature is measured from the start of rice cooking and the temperature is incorrectly measured to be higher than a predetermined temperature (for example, 40°C),
Immediately - carefully cooked process ()<.

By using a timer circuit and delaying the start of the cooking process by a certain period of time, the above-mentioned temperature error measurement can be prevented.

It goes without saying that the present invention is not limited to the embodiments described above, and can be modified in various ways without changing the gist thereof.

As explained above, according to the present invention, in a rice cooker/jar, etc., the water absorption process is appropriately controlled by the inner pot temperature even when rice is cooked again immediately after rice cooking or when rice cooking is started immediately after stopping warming. This allows you to cook delicious rice.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of the cooking temperature control section of a microcomputer rice cooker according to an embodiment of the present invention, FIG. It is a flow chart of a water absorption process. 1 Side temperature sensor 2 Center temperature sensor 3 Microcomputer 4 Rice cooking heater 5 Power supply circuit
6 Inner container 7 Inner pot 8 Microcomputer board 9 Rice cooking heater control section 10 Tria, Ri agent Patent attorney Aki 1) Shu Ki

Claims (1)

[Claims] An inner pot temperature sensor detects the temperature of the inner pot stored in the inner container, and only when the output of the inner pot temperature sensor is below a predetermined value after a certain period of time from the start of rice cooking, A rice cooker characterized by comprising means for supplying a heat source.