JPS62189016A - 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 (Field of Industrial Application) The present invention relates to a microcomputer-controlled rice cooker that has become popular in recent years.

(Prior Art) This type of rice cooker measures the temperature at the bottom of the inner pot or, in addition, at the side of the inner pot using a humidity sensor, and determines the amount of cooked rice based on the temperature rise curve of the inner pot during rice cooking.

Normal rice cooking mode, which uses electricity commensurate with the amount of rice cooked, and high-temperature mode, which uses a constant amount of electricity to cook rice regardless of the amount of rice cooked, since the amount of rice cannot be determined if the temperature exceeds the determination range of the rice cooker from the start of cooking. It has rice cooking modes, and conventionally, these modes were selected based on the detection output of a temperature sensor immediately after the user operated the rice cooking switch at the start of rice cooking.

(Problem to be solved by the invention) However, in the conventional method, the problem occurs immediately after keeping warm or immediately after cooking rice, etc.2
When the main body and temperature sensor are warm, store the inner pot in the main body and operate the rice cooking switch.

Even if the inner pot was at a low temperature, depending on the tracking ability of the warm temperature sensor, there was a problem that the temperature did not reach the temperature immediately and the high temperature cooking mode was selected. As a result, in the high-temperature method 1-wave mode, rice is cooked with a constant power regardless of the amount of rice cooked, so there is a problem that the rice cannot be cooked as deliciously as compared to the normal rice cooking mode, which cooks rice with the power commensurate with the rice cooker.

(Means for Solving the Problems) The present invention has been made to solve the above problems, and includes a detection means for detecting the temperature of the inner pot using a quantity temperature sensor for a certain period of time, and The rice cooking apparatus is provided with a normal rice cooking mode starting means for executing a normal rice cooking program when the temperature is lower than a certain temperature, and a high temperature rice cooking mode starting means for executing a high temperature rice cooking program when the certain period of time is counted.

(Function) By doing this, the temperature of the inner pot is detected through the temperature sensor during a certain period of time, and rice is cooked in the optimum rice cooking amount mode based on the change in temperature within this certain period of time. do.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings. The configuration of this embodiment is as shown in FIG. 1, and FIG. 2 shows a flowchart of the same operation. In the figure, reference numeral 1 denotes a cylindrical main body with a bottom, which has an opening at the top and houses an inner pot 2 that can be attached and detached therein. Reference numeral 6 denotes a temperature sensor, which is installed inside the main body 1 so as to be in close contact with the outer bottom of the inner pot 2, and detects the temperature of the inner pot 2. 4 is a rice cooking heater.

It is installed inside the main body 1 so as to be in close contact with the outer bottom of the inner pot 2, and heats the inner pot 2. Reference numeral 5 denotes a lid which is attached to the main body 1 so as to be openable and closable so as to cover the openings of the main body 1 and the inner pot 2. Reference numeral 6 denotes a rice cooking switch, which is provided on the outside of the main body 1 and is operated when starting rice cooking. 7 is a detection means provided inside the main body 1, which starts operation by operating the rice cooking switch 6, determines whether or not the temperature of the inner pot 2 is below a certain temperature T by the temperature sensor 3 for a certain period of time θ, and This is to judge the progress of the process. Reference numeral 8 indicates means for starting the normal rice cooking mode, and 9 indicates means for starting the high temperature rice cooking mode, which are provided inside the main body. A rice cooking program 11 is executed, and a high temperature rice cooking program 12 is executed by means 9 at the end of a certain period θ. A rice cooking lamp 10 is provided on the outside of the main body 1 and is lit during rice cooking.

Next, the operation of this embodiment will be described.

When a user puts washed rice and an appropriate amount of water into the inner pot 2, stores it in the main body 1, and closes the lid 5, the temperature sensor 3 comes into close contact with the outer bottom surface of the inner pot 2 and is thermally coupled. Next, when the rice cooking switch 6 is operated, the rice cooking lamp 10 lights up, indicating that the rice cooking state has started, and the detection means 7 starts operating.

As shown in FIG. 2, the detection means 7 determines whether the temperature output of the temperature sensor B is less than a certain temperature T (e.g. 80°C) and measures a certain period of time θ (e.g. 60 seconds), and when the certain period of time θ has elapsed. determine whether or not.

Therefore, in normal use, the temperature does not exceed the constant temperature T at the start of rice cooking, so it is determined by the detection means 7 that the temperature is less than the constant temperature T, and the normal rice cooking mode starting means 8 is activated. 11, the amount of rice to be cooked is determined, and the rice is cooked using electric power commensurate with the result.

In addition, the inner pot 2 may be stored in the main body 1 and the rice cooking switch 6 may be set immediately after the user accidentally operates the rice cooking switch 6 to cause so-called dry cooking, or when the main body 1 and temperature sensor 3 are warm, such as during continuous rice cooking. When operated, the rice cooking lamp 10 lights up and the detection means 7 starts operating as described above. At this time, even if the temperature of the rice and water inside the inner pot 2 is low, there is not enough time for the temperature sensor 3 to cool down, so the temperature may reach a certain temperature T or higher.

In this case, the detection means 7 detects θ for a certain period of time as shown in FIG.
While measuring the time, the output temperature of the temperature sensor B is constantly checked, and a time is provided for the temperature sensor 3 to cool down, and when the temperature falls below a certain temperature "r", the normal rice cooking mode starting means 8 is activated, and the normal rice cooking mode is started as described above. Cook rice using the rice cooking program 11. If the temperature does not drop below a certain level even after a certain period of time θ ends, the temperature sensor 5. It is clear that both the rice and water inside the inner pot 2 are below the certain temperature. Therefore, the high-temperature rice cooking mode starting means 9 operates, and rice is cooked with constant power according to the high-temperature rice cooking program 12.The high-temperature rice cooking program 12 is used in the case where the ffL JTI person cooks rice with hot water (Iwa 1φru/boiled water). If you try,
Alternatively, in a microcomputer-controlled wholesale rice cooker, unless a special configuration is used, when the power is turned on again in the event of a power outage during rice cooking, how far in the normal rice cooking program 11 is executed before the power outage, and the result of determining the amount of rice to be cooked is determined. Because you won't know what happened.

A series of operations related to the rice cooking process starting from the operation of the rice cooking switch 6 is performed again, and the high temperature rice cooking program 12 is executed when the execution of the normal rice cooking program 11 is not suitable.

(Effects of the Invention) According to the above two aspects of the present invention, by detecting the state of constant temperature within a certain period of time from the start of rice cooking through the detection means, two
The normal rice cooking program and high temperature rice cooking program are now executed without fail.

You can get a rice cooker that can cook delicious rice in any situation.

[Brief explanation of drawings]

FIG. 1 is an external perspective view of a rice cooker according to an embodiment of the present invention during removal of the inner pot, and FIG. 2 is a flowchart of the same operation. 1...Main body, 2...Inner pot, 3...Temperature sensor. 4... Rice cooking heater, 7... Direction means. 8... Means for starting the normal rice cooking mode. 9...Means for starting high temperature rice cooking mode. 11...Normal rice cooking program, 12...High temperature plate program. θ...certain time, T...constant temperature.

Claims (1)

[Claims] It is equipped with a rice cooking heater (4) that heats a removable inner pot (2) housed in the main body (1), and a temperature sensor (3) that detects the temperature of the inner pot (2). A detection means (7) detects the temperature of the inner pot (2) for a certain period of time (θ) according to (3), and when the detection result of this detection means (7) is less than a preset certain temperature (T), it is normal. A normal rice cooking mode starting means (8) for executing a rice cooking program (11) is provided, and a high temperature rice cooking mode starting means (9) for executing a high temperature rice cooking program (12) when the measurement of the certain period of time (θ) is completed. A rice cooker characterized by: