JPH02131714A - Cooking device - Google Patents

Abstract

PURPOSE:To prevent the cooking device main body from being raised to a dangerous temperature due to a continuous operation by controlling a heating means at the time when a prescribed time by a second timer means for starting time counting of steam cooking elapses, when an output of a first timer means which is outputted after a prescribed time elapses is obtained, or when boiling of water is detected. CONSTITUTION:Whether a start switch 10 is depressed or not is decided, and when the start switch 10 is depressed, the maximum heating power is set in order to execute cooking preparations and to boil water contained in a container 2 and time counting of a first timer means 5 is executed. When it is decided by an A/D converter 15 that the water in the container 2 boils, or when a first timer means 5 reaches a prescribed time, heating power for steam cooking is set, and time counting of a second timer means 6 is executed. Subsequently, whether this second timer means 6 reaches a prescribed time required for cooking or not is decided, and when a second timer means 6 reaches the prescribed time, cooking is shifted to an ending process.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a cooking appliance such as a rice cooker having a steaming function.

Conventional technology When performing steam cooking, conventional cooking devices heat water so that it boils and generate steam, and then cook with the generated steam. It was common for the cooking to be completed after the cooking time had elapsed.

Problems to be Solved by the Invention However, with such conventional cooking devices, when performing steam cooking, water is heated until it boils, so if there is a large amount of water or if water is added midway, However, there is a problem in that boiling cannot be detected for a long time, and as a result, the temperature of the cooking device rises abnormally, creating a dangerous situation. The purpose is to provide equipment.

Means for Solving the Problems In order to solve the above problems, the cooking device of the present invention includes a container for storing food and water, a starting means for starting cooking, a heating means for heating the food. boiling detection means for detecting that the water in the container has boiled; approximately one timer means for starting time measurement based on the output of the starting means and outputting an output after a predetermined time has elapsed; a second timer means that starts timing steam cooking when the output of the timer means is obtained or when the boiling detection means detects boiling of water; and a predetermined time elapsed by the second timer means. and control means for controlling the heating means so as to end the steam cooking when the steam cooking is completed.

Effect According to the above configuration, when the heating means heats the water in the container to boil it, and the boiling detection means detects the boiling,
The second timer means starts timing the steaming process,
In this case, if the boiling of water in the container cannot be detected for a long time and the predetermined time of the first timer means, which starts counting from the start of cooking, has elapsed, the first timer means starts counting even if boiling is not detected. The second timer means can start timing the steaming process.

Embodiment Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings. FIG. 1 shows a block diagram of a cooking device according to an embodiment of the present invention, in which 1 indicates a starting means for starting cooking;
2 is a container for storing food and water; 3 is a heating means for cooking the food; 4 is a boiling detection means for detecting that the water in the container 2 has boiled; 6 is a container for the starting step 1; A first timer means 6 starts measuring υ based on the output and outputs the output after a predetermined time has elapsed. A second timer means 57 that starts timing for steam cooking when the second timer means 6 detects a predetermined time is a control means that controls the heating means 3 so that cooking ends when the second timer means 6 reaches a predetermined time It is.

FIG. 2 shows a specific circuit diagram of a cooking device according to an embodiment of the present invention. In FIG. 2, 1o is a starting switch for starting cooking, and 11 is a heater for heating food. , 12 is a relay for energizing the heater 11, and has a relay coil 12a and a relay contact 12b. 13 is a relay drive suit 14 for driving the fftl relay 12; 14 is a thermistor for detecting the temperature of steam when the water in the container 2 is boiled; 16 is the thermistor 1;
A/D which converts the output signal from 4 into A/D. converter,
16 is the start switch 1o and the A/D converter 1;
17 is an output section that opens and closes the relay contact 12b constituting the relay 12 to energize the heater 11; 18 is the output section that receives the signal input from the input section 16; 19 is a control section that controls the input section 16, the output section 17, and the control section 1.
FIG. 3 shows a flowchart showing the operation of the microcomputer 19, and the operation will be explained based on this flowchart.

First, in step 21, the thermal power is set to zero. Next, in step 22, it is determined whether or not the start switch 10 is pressed, and steps 21 to 22 are performed until the start switch 10 is pressed.
repeat. When the start button 10 is pressed, the process proceeds to step 23, where the maximum heat is set for preparing for cooking and boiling the water in the container 2. In step 24, the first timer means 6 measures time. And Stethop 26
If the first timer means 6 has not reached the predetermined time, the process proceeds to step 26. In this step 26, A/
It is determined by the D converter 16 whether the water in the container 2 has boiled or not, and if it has not boiled, the process returns to step 23 and steps 23 to 27 are repeated. stethop 27
If it is determined that the water has boiled, or if the first timer means 6 reaches a predetermined time in step 26, the process proceeds to step 28. In this step 28, the heat power of the steaming pot is set, and in step 29, the second timer means e is timed. Then, in step 30, it is determined whether or not the second timer 1,000 steps 6 has reached a predetermined time required for cooking. If it has not reached the predetermined time yet, the process returns to step 28 and repeats steps 28 to 3o. On the other hand, if the second timer means 6 has reached the predetermined time in step 3o, the process moves to step 31, the ending process.

Effects of the Invention As is clear from the description of the above embodiments, according to the present invention,
If a large amount of water is used for steaming, or if water is added during cooking. Alternatively, even if boiling cannot be detected, such as when there is a foreign object in the boiling detection part, when the predetermined time by the first timer means, which measures the time from the start of cooking, has elapsed, the second timer means starts cooking. Once the time has elapsed and the predetermined time set by the second timer means has elapsed, the heating power is reduced to zero, so the temperature of the cooker itself will not rise to a dangerous level due to continuous operation, and as a result, This allows steam cooking to be carried out with peace of mind.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a cooking device showing one embodiment of the present invention;
FIG. 2 is a specific circuit diagram of the cooking device, and FIG. 3 is a flowchart showing the operation of the microcomputer in the cooking device. 1... Starting means, 2... Container, 3...
... Heating means, 4... Boiling detection means, 6.
...First timer means, 6...Second timer means, 7...Control means, 19...1...
microcomputer. Name of agent: Patent attorney Shigetaka Awano and 1 other person 1st
Figure 113

Claims (1)

[Claims] A container for holding food and water, a starting means for starting cooking, a heating means for heating the food, a boiling detection means for detecting that the water in the container has boiled, and a starting means for the starting means. a first timer means that starts time measurement based on the output and outputs the output after a predetermined time has elapsed; and when the output of the first timer means is obtained or when the boiling detection means detects boiling of water; 2nd step to start steam cooking timing
A cooking appliance comprising: a timer means; and a control means for controlling the heating means so as to end steaming when a predetermined time set by the second timer means has elapsed.