JPH1156625A - Rice cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent abnormalities, as the milting of resin components of a rice cooker main body and the burning-black of rice within a pot when an abnormal state is detected by stopped a heating output and terminating a rice boiling after fixed time passes after the rice is boiled by a prescribed heating output for prescribed time when a rice boiling abnormality is detected. SOLUTION: A pot 1 is heated by a heating coil 3 driven by an inverter 2, the temperature of the bottom of the pot 1 is detected by a temperature detection means 4 and the temperature of a lid part is detected by a temperature detection means 5. A heating output determination means 8 of a control means 6 inputs outputs of temperature detection means 4, 5 and determines a heating output of the heating coil 3. A rice boiling control means 9 inputs an output of the heating output determination means 8 and outputs of temperature detection means 4, 5, controls the inverter 2 based on a rice boiling sequence and controls a heating output of the heating coil 3. When the rice boiling control means 9 judges a rice boiling state as a rice boiling abnormality, a heating output is stopped and the rice boiling is terminated after fixed time passes, after the rice is boiled by a fixed heating output for prescribed time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice cooker used for general household or business use.

[0002]

2. Description of the Related Art Conventionally, a rice cooker of this kind has a configuration as shown in FIG. 1, for example. In FIG. 1, a pot 1 is filled with rice and water and heated by a heating coil (heating means) 3 driven by an inverter 2. The first temperature detecting means 4 detects the temperature at the bottom of the pan 1, and the second temperature detecting means 5 detects the temperature of the lid. The control means 6 receives the output of the first temperature detecting means 4 and the output of the second temperature detecting means 5 and determines the heating output of the heating coil 3. Output and output of first temperature detecting means 4 and second temperature detecting means 5
Of the heating coil 3 by controlling the inverter 2 based on the rice cooking sequence and a display means 10.

[0003] A rice cooking sequence of this type of rice cooker is generally as shown in FIG. In FIG. 3, the temperature by the first temperature detecting means for detecting the temperature of the pan is indicated by a solid line, and the temperature by the second temperature detecting means for detecting the temperature of the lid is indicated by a dotted line. Hereinafter, the rice cooking sequence will be described. As shown in FIG. 3, first, as a preparation for cooking rice, a pre-cooking step is performed in which the rice is kept at a constant temperature θa, soaked in water for a predetermined time Ta, and absorbed. Next, it enters into a cooking process and is heated to a full power until it boils. When the second temperature detecting means reaches the predetermined temperature θb, the heating output is adjusted to maintain the boiling. When the water in the pot decreases in the boiling maintaining step, the temperature of the pot gradually increases, and when the temperature reaches a predetermined temperature θc (for example, 130 ° C.), the cooking step ends.
Finally, the rice is uniformly absorbed for a certain period of time Tb, and a steaming process of repeating steaming with a heating output such that the rice at the bottom of the pot does not scorch for a certain period of time is performed, and the rice is finished. Was like that.

[0004] When it is determined that the rice cooking is abnormal, the rice cooking is stopped immediately, or after the rice is cooked for a predetermined time with a constant heating output, the rice cooking is stopped.

[0005]

In such a conventional rice cooker, when it is determined that the rice is abnormal, the rice cooker is immediately stopped, or after the rice is cooked for a predetermined time with a constant heating output, the rice cooker is stopped. So that it was cooked to some extent,
Detects abnormal conditions and prevents abnormalities such as melting of resin components of the rice cooker body and darkening of rice in the pot, but steaming that uniformly absorbs water into rice and gelatinizes starch tissue. Cannot be performed.

The present invention solves the above-mentioned problems. When an abnormal condition is detected, the resin components of the rice cooker are melted, and the rice in the pot is prevented from becoming abnormally dark, and the rice is uniformly dispersed. The purpose is to provide better rice by absorbing water, steaming to gelatinize the starch tissue, and terminating the rice cooking.

[0007]

In order to achieve the above object, the present invention provides a pot in which rice and water are poured, a heating means for heating the pot, and a control for controlling the heating means to cook rice in a predetermined sequence. Means, the control means, when detecting the rice cooking abnormality, after a predetermined time, after cooking rice with a predetermined heating output, after stopping the heating output and after a certain period of time,
The problem solving means is to end the rice cooking.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention comprises a pot for putting rice and water, heating means for heating the pot, and control means for controlling the heating means to cook rice in a predetermined sequence, wherein the control means comprises: When abnormal rice cooking is detected, the rice is cooked at a predetermined heating output for a predetermined time, and then the heating output is stopped, and after a certain period of time, the rice cooking is terminated. Prevents abnormalities such as melting of the resin components of the container body and the darkening of the rice in the pan, as well as making the rice absorb water evenly, steaming to gelatinize the starch tissue, and ending the rice cooking to make better rice Can be provided.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1, 4 and 3. FIG. As shown in FIG. 1, the pot 1 is filled with rice and water and heated by a heating coil (heating means) 3 driven by an inverter 2. The first temperature detecting means 4 detects the temperature at the bottom of the pan 1, and the second temperature detecting means 5 detects the temperature of the lid. The control means 6 receives the output of the first temperature detecting means 4 and the output of the second temperature detecting means 5 to determine the heating output of the heating coil 3 and the heating output determining means 8.
And the output of the first temperature detecting means 4 and the output of the second temperature detecting means 5 to control the inverter 2 based on the rice cooking sequence to control the heating output of the heating coil 3. When the rice cooking control unit 9 determines that the rice is abnormal, it cooks the rice with a constant heating output for a predetermined time, stops the heating output, and ends the rice cooking after a lapse of a predetermined time. Like that. Further, when it is determined that the rice cooking is abnormal or when the rice cooking is finished, an abnormality display may be displayed on the display means 10 or a notification may be made by a notification means such as a buzzer.

This operation will be described with reference to FIG. 3. In step 20, rice is cooked according to a predetermined sequence, and in step 21, the end of rice cooking is confirmed. If the rice cooking is completed, the process proceeds to step 29, where the rice cooking is completed and the operation shifts to the heat retention. If not, the process proceeds to step 22. In step 22, it is determined whether or not there is a cooking abnormality. If there is no abnormality, proceed to step 20 and continue cooking rice. If there is any abnormality, proceed to step 23, for a certain time, with a certain heating output,
The rice cooking is continued, and the process proceeds to step 24. The heating is stopped for a certain period of time, and then the process proceeds to step 25, where the rice cooking is completed.

As described above, according to the present embodiment, when an abnormal rice cooking is detected, after cooking rice with a predetermined heating output for a predetermined time, the heating output is stopped, and after a certain period of time, the rice cooking is terminated. By stopping and shifting to heat retention,
Even in the case of abnormal rice cooking, the rice components in the rice cooker are melted, preventing abnormalities such as the rice in the pot from becoming darkened, and at the same time, allowing the rice to absorb water evenly and gelatinizing the starch tissue. By terminating, better rice can be provided.

[0012] It should be noted that an abnormal rice cooker may be detected to notify that abnormal rice cooking has occurred at the end of rice cooking, or that an abnormal rice cooker may be detected. It is clear that the notification may be made at both times. Further, instead of stopping the heating, a heating output may be applied to such an extent that the temperature does not drop sharply.

[0013]

As described above, according to the present invention, the heating means for heating the pot, the temperature detecting means for detecting the temperature of the pot, and the control means for controlling the heating means to cook rice in a predetermined sequence. The control means, when detecting the abnormal rice cooking, for a predetermined time, after cooking rice with a predetermined heating output, stop the heating output, after a lapse of a certain time, stop the rice cooking and stop or keep warm In the case of abnormal rice cooking, the resin component of the rice cooker melts,
It is possible to provide a better rice by preventing abnormalities such as darkening of the rice in the pot, making the rice uniformly absorb water, steaming to gelatinize the starch tissue, and terminating the rice cooking.

[Brief description of the drawings]

FIG. 1 is a block diagram of a rice cooker according to a first embodiment of the present invention.

FIG. 2 is a flowchart of the rice cooker according to the first embodiment of the present invention.

FIG. 3 is an operation time chart of a general rice cooker during rice cooking.

[Explanation of symbols]

 Reference Signs List 1 pot 3 heating coil (heating means) 6 control means

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Mitsuru Takechi 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Kazunori Kawano 1006 Kadoma Kadoma Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd.

Claims (1)

[Claims] 1. A heating device for heating a pot, and a control device for controlling the heating device to cook rice in a predetermined sequence, wherein the control device performs a predetermined period of time when a rice cooking abnormality is detected. A rice cooker that stops heating after performing rice cooking with the heating output of Example 1 and then finishes the rice cooking after a lapse of a predetermined time.