JPH0789986B2 - Cooking device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a cooking device such as a rice cooker having a steaming function.

In the conventional rice cooker, when cooking is started, the water in the container is heated until it boils, and after boiling, it is heated with a predetermined heating power until the water runs out, and when the water runs out, the cooking is finished. Things were common.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In such a conventional rice cooker, in steam cooking such as "steamed rice cooker", a container in which food and water are put is heated and cooked until the water content in the container disappears. The cooking time is determined by the amount of food in the container and the amount of water in the container, so that the cooking time must be accurate. Experience with cooking such as "steamed rice cake" was necessary.

It is an object of the present invention to provide a cooker that solves such problems.

Means for Solving the Problems In order to solve the above problems, the cooker of the present invention counts the cooking time set by the timer setting means capable of setting an arbitrary cooking time and the cooking time set by the timer setting means. A timer means, a container for containing food and water, a heating means for heating and cooking the food, a boiling detection means for detecting that the water in the container has boiled, a control means for controlling the heating means, The timer means is provided with a time display means for displaying the time of subtraction and counting, the control means detects that the water in the container has boiled by the boiling detection means, and then the heating amount of the heating means before that. The timer means is made to measure the time, and the heating means is controlled so that the cooking is finished when the timer means reaches a predetermined time. .

Operation With the above configuration, when performing steam cooking such as "steaming", set the cooking time after the water in the container has boiled to the appropriate time for steam cooking. It is possible for the user to make a selection and cooking with low power consumption becomes possible.

Embodiment One embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a block diagram of a rice cooker according to an embodiment of the present invention. In FIG. 1, 1 is a timer setting means capable of setting an arbitrary cooking time, and 2 is the timer setting means. Timer means for subtracting and counting the cooking time set by 1. 3 is time display means for displaying the time when the timer means 2 is subtracting and counting time. 4 is a container for putting food and water. 5 is the container 4 for heating. A heating means for heating and cooking the food, 6 is a thermistor installed on the upper part of the container 4, and boiling for detecting that the water inside is boiled by the temperature of the steam when the water is boiled In the detecting means, the boiling detecting means 6 is composed of a thermistor installed on the upper part of the container 4, and this thermistor detects the temperature of the steam when the water boils. After detecting that the water has boiled by the boiling detection means 6, the heating means 5 reduces the heating amount of the heating means 5 as compared with that until then, and causes the timer means 2 to measure the time. It is a control means for controlling the heating means 5 so that the cooking is finished at the time.

FIG. 2 shows a concrete circuit diagram of the rice cooker in one embodiment of the present invention. In FIG. 2, 10 is a timer setting switch for setting the cooking time, and 11 is the start of cooking. A start switch, 12 is a heater for heating food, 13 is a relay for energizing the heater 12, 14 is a relay drive unit for driving the relay 13,
Reference numeral 15 is a thermistor for detecting the temperature of steam when the water in the container 4 is boiling, 16 is an A / D converter for A / D converting the signal of the thermistor 15, 17 is the timer setting switch 10, and the start An input unit for inputting signals of the switch 11 and the A / D converter 16, an output unit 18 for opening and closing the contact 13a of the relay 13 to energize the heater 12, and 19 for the input unit.
A control unit that controls the output unit 18 by a signal input from 17, a microcomputer 20 that includes the input unit 17, the output unit 18 and the control unit 19,
Is a liquid crystal display element having a 7-segment 2-digit display function displayed by the control unit 19.

FIG. 3 shows a main part of a flow chart of the microcomputer 20, and the operation will be described based on this flow chart.

First, in step 22, an arbitrary cooking time is displayed on the liquid crystal display element 21 and the timer set using the timer setting switch 10. Then, in step 23, it is determined whether or not the timer set has ended. If not, step 22
Return to and set the timer again. When the timer setting is completed, it is determined in step 24 whether the start switch 11 has been pressed, and the process waits until it is pressed. Then, when the start switch 11 is pressed, the routine proceeds to step 25, where the heater 12 is energized with the maximum heating power in order to boil the water in the container 4.

Next, in step 26, the temperature in the container 4 is input, and in step 27
Then, it is judged whether or not the water has boiled by the thermistor 15 provided on the upper part of the container 4. If not boiling, the process returns to step 25, and steps 25 to 27 are repeated. If it is judged in step 27 that it is boiling, step 28
Proceed to and set the dropped firepower for cooking. Next, in step 29, the cooking time set in step 22 is subtracted and the liquid crystal display element 21 is displayed. Then, in step 30, it is judged whether or not the cooking time of the timer has become zero. If it is not zero, the process returns to step 28, and steps 28 to 30 are repeated. When the cooking time becomes zero in step 30, the process proceeds to step 31, and the ending process is performed.

Effects of the Invention According to the present invention, as is clear from the description of the above embodiments,
After the boiling detection means detects that the water has boiled, the timer means for counting the cooking time set by the timer setting means counts the time, and the cooking is finished when the timer means reaches a predetermined time. Since the control means for controlling the heating means is provided as described above, the following excellent effects are exhibited.

(1) After the water has boiled, the heating amount of the heating means is made smaller than before, and the subsequent cooking time is started, so that the room temperature is not affected in a short set time and the temperature is low. Power consumption enables stable and stable cooking.

(2) By managing the time, it is possible to accurately manage the cooking quality.

(3) If you want to cook a little more after cooking, you can continue cooking simply by setting the time and starting cooking.

(4) Since the cooking time is subtracted and displayed by the time display means, the cooking situation can be seen at a glance, which is convenient.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a rice cooker showing an embodiment of the present invention,
FIG. 2 is a specific circuit diagram of the rice cooker, and FIG. 3 is a flowchart of a microcomputer in the rice cooker. 1 ... timer setting means, 2 ... timer means, 3 ... time display means, 4 ... container, 5 ... heating means, 6 ... boiling detection means, 7 ... control means.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Makoto Katagasu 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) Reference JP-A-60-53110 (JP, A) 8434 (JP, U)

Claims (1)

[Claims] 1. A timer setting means capable of setting an arbitrary cooking time, a timer means for subtracting and counting the cooking time set by the timer setting means, a container for putting food and water, and a food. Heating means for cooking,
Boiling detection means for detecting that the water in the container has boiled,
Control means for controlling the heating means, and a timer means comprises a time display means for displaying the time of subtraction time counting, the control means after detecting that the water in the container has boiled by the boiling detection means, The heating amount of the heating means is made smaller than before, and the timer means is caused to count the time, and the heating means is controlled so as to finish cooking when the timer means reaches a predetermined time. Cooker like.