JPH01265916A - Cooking utensil having steaming function - Google Patents

Abstract

PURPOSE:To enable satisfactory steam-cooking with a stable result and automating steam-cooking by detecting boiling of water in a pan while setting a steam- cooling time after the boiling. CONSTITUTION:A heating means 2 heats water and rice or the like in a pan 1 while a boiling detecting means 3 detects boiling of water in the pan 1. A steaming time setting means 4 sets a steaming time after the boiling detecting means 3 detecting the boiling of water in the pan 1, and a time counting means 5 initiates the cooking step in accordance with an output of the boiling detecting means 3 and counts the time lapse. Further, a heating control means 6 stops the heating means 2 when the time counting means 5 counts the steaming time set by the steaming time setting means 4. As a result, it is possible to perform difficult steam-cooling having a satisfactory result with a simple manipulation.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a rice cooker and a pressure cooker that have a steaming function for steaming rice, steaming steamed rice, etc. for general households.

This invention relates to an open cooker with a steam function.

Conventional technology This type of conventional cooker takes advantage of the fact that the bottom of the pot becomes hot when the water in the pot runs out, measures the temperature at the center of the bottom of the pot, and completes cooking when the temperature reaches a high temperature. Generally, the cooking time is measured from the moment the cooking starts, and the cooking is completed when a predetermined period of time has elapsed.

Problems to be Solved by the Invention However, in such a conventional configuration, the required amount of water is poured into a pot in advance for steaming and cooking, and when the water runs out and the cooking is completed, the amount of water added at the beginning is changed. The amount of water determined depends on the type of food being cooked. In addition, when cooking eggs such as chawanmushi, the result will be better if there is more steam at the end of steaming, but with the above-mentioned conventional configuration, the water will have run out, so the result will not be as good.

Also, if you steam cook by adding plenty of water and measuring only the time, the time it takes for the water to boil and steam to start to come out will vary due to variations in room temperature, power supply voltage, heater, etc. Since the actual steaming time varies, there is a problem in that the finished product may vary even if the steaming time is the same.

The present invention was made to solve these problems, and it enables the above-mentioned difficult steam cooking to be done with good quality.
It is an object of the present invention to provide a cooking device with a steaming function that can be operated easily.

Means for Solving the Problems In order to solve the above problems, the cooking device with a steaming function of the present invention includes a heating means for heating water, rice, etc. stored in a pot;
a boiling detection means for detecting that the water in the pot has boiled; and a steaming time setting means for setting a steaming time after the boiling detection means detects that the water in the pot has boiled. , a timer for starting operation based on the output of the boiling detection means and counting time; and a timer for stopping heating by the pressure heating means when the timer reaches the steaming time set by the steaming time setting means. It is constructed by heating control means.

Effect According to the above configuration, a large amount of water is put in the pot and the steaming time is set when cooking starts, and the steaming time is set after the water in the pot boils and steam starts to come out. This allows you to set an accurate steaming time and automatically stop the steaming once the set steaming time has elapsed.

In this way, by adding a little more water and steaming, there is no need to dry-bake because the water runs out. With this simple configuration, it is possible to provide a cooking device with a steaming function that is safe, easy to use, and capable of cooking steamed foods with good results.

EXAMPLE Hereinafter, an example of the present invention will be described based on FIGS. 1 to 4.

FIG. 1 shows a block diagram of a cooking device according to an embodiment of the present invention, where 1 is a pot for storing water, etc., and 2 is a heater for heating the water etc. stored in the pot 1. It is a means. 3 is a boiling detection means for detecting that the water in the pot 1 has boiled, and 4 is a steaming time setting means for setting the steaming time after the boiling detection means 3 detects that the water in the pot 1 has boiled. It is. Reference numeral 5 denotes a time measuring means which starts its operation based on the output of the boiling detection means 3 and counts the time. 6 is when the timing means 5 reaches the steaming time set by the time setting means 4;
This is a heating control means for stopping heating by the heating means 2. 7 is a selection switch for selecting a cooking menu such as "Steamed Okowa" or "Chawanmushi", and 8 is a selection switch 7
The time setting means 4 according to the cooking menu selected by
This is a time changing means for resetting the steaming time. Reference numeral 9 denotes a time switch which sets the steaming time of the steaming time setting means 4 from 1 minute and adds 1 minute each time it is pressed. 1
0 is an intermittent control means that outputs a signal to the heating control means 6 to intermittently energize the heating means 2 only during the steaming time set by the steaming time setting means 4.

FIG. 2 shows a circuit diagram of a rice cooker according to an embodiment of the present invention, and FIG. 3 shows a partial sectional view of the rice cooker, which is composed of a microcomputer 11 and peripheral circuits. The microcomputer 11 shown here is a cP
It is a so-called one-chip microcomputer consisting of U, ROM, RAM, input/output ports, etc. 12 is pot 1
3, this heater 12 is the relay contact 1
4 to an AC power source 15, and receives a signal from the output port of the microcomputer 11, and is configured to open and close the relay contact 14 by passing a current through the relay coil 17 through the transistor 16. There is. Reference numeral 18 denotes a thermistor for detecting steam temperature, which is installed inside the lid 19 and is placed so as to be hit by the steam generated when the water contained in the pot 13 is boiled. Voltage divided by and resistance 21.22
The divided voltage is input to the axis ratio device 23, and its output is input to the input port of the microcomputer 11.

24 is a rice cooking switch, and this rice cooking switch 24 is controlled by the microcomputer 1 to determine whether it is pressed or not.
1 is entered. 25 is a selection switch for selecting a cooking menu, and 26 is a time switch, and the microcomputer 1 determines whether these selection switch 25 and time switch 26 have been pressed.
1 is entered. 27 is a liquid crystal display element, and this liquid crystal display element 2 displays the cooking menu, time, etc. based on the output of the microcomputer 11. 28 is a direct current power supply for operating the circuit described above, and is composed of a transformer, a diode bridge, a capacitor, a resistor, and a Zener diode.

In the above 17i configuration, the operation of the rice cooker will be explained next.

FIG. 4 shows a flowchart of a program stored in the ROM in the microcomputer 11, and the procedure of the program shown in this flowchart will be explained.

First, in step 1, set N=1, proceed to step 2,
In step 2, it is determined whether the selection switch 25 has been pressed, and if it has not been pressed, the process proceeds to step 3. Then, in step 3, it is determined whether or not the time switch 26 has been pressed, and if it has not been pressed, the process advances to step 4. In step 4, it is determined whether the rice cooking switch 24 has been pressed,
If it is not pressed, return to step 2.

If it is determined in step 2 that the selection switch 25 is pressed, in step 5 N is incremented by 1, such as N=N+1, and the process proceeds to step 6. In step 6, it is determined whether N=3, and if N=3, in step 7, TO=
40 minutes, then proceed to step 3. Still N at step 6
If not -3, proceed to step 8, in this step 8 it is determined whether N=4, and if N=4, step 9
Set To=5 minutes and proceed to step 3. Next, if it is not N-4 in step 8, it is determined in step 1o whether or not it is N22, and if it is not N22, the process proceeds to step 3, whereas if it is N22, the process returns to step 1.

If it is determined in step 3 that the time switch 26 has been pressed, the process advances to step 11, and in step 11 the time switch 26 is pressed.
It is determined whether or not 6 has been pressed for the first time. If it is the first time, in step 12, To=1 minute is set, and the process proceeds to step 4. The time switch 26 was pressed in step 11 is 1.
If it is determined that it is not the third time, in step 13 To=To+
Set To as 1 minute, increase To by 1 minute, and proceed to step 14. In step 14, To) determine whether it is 60 minutes,
If To〉60 minutes, proceed to step 12;
If ro>so is not the case, proceed to step 4.

If it is determined in step 4 that the rice cooking switch 24 is pressed, the process proceeds to step 15, where an output is output to energize the heater 12, and the process proceeds to step 16.

In step 16, it is determined whether N=4, and if N-4, the process proceeds to step 17, where the heater 12 is controlled in the sequence for the chawanmushi menu, and the liquid crystal display element 2
7 is displayed, and the process proceeds to step 18. Step 18
Now, it is determined whether the water in the pot 13 has boiled or not, and the heater 12 is continued to be energized until it boils.If it is determined that the water has boiled, then in step 19, the heater 12 is energized within a period of 16 seconds. Control it so that it lasts only 5 seconds,
In step 2o, time T1 is counted, and in step 21, it is determined whether T1≧To. If T1≧TO, the process returns to step 20; on the other hand, if T1≧TO, the process proceeds to step 22, where the heater 12 is Stop energizing and return to step 2.

If N=4 is not determined in step 16, the process proceeds to step 23. In step 23, it is determined whether N=3. If N=3, the process proceeds to step 24 and the heater 12 is turned on at control and liquid crystal display element 2
7 is displayed, and the process proceeds to step 18.

If it is not N-3 in step 23, the process proceeds to step 26 to determine whether N=2, and if N=2, the mode goes to white rice cooking mode in step 26; After switching to brown rice cooking mode in step 27, step 2
The process proceeds to step 8, where it is determined whether or not the rice cooking has been completed. If the rice cooking has not been completed, the process returns to step 26. On the other hand, if the rice cooking has been completed, the process proceeds to step 22.

In this way, first, it is detected that the water in the pot 13 has boiled, and the steaming time after boiling is set for cooking. It is no longer affected, and as a result,
Since steam cooking can be performed with stable results and good quality, steam cooking can be automated and its usability can be improved.

In addition, the standard steaming time can be automatically set according to the cooking menu selected by the selection switch 25, so just by selecting the menu, the steaming time will be selected, and as a result, this steaming time will be displayed. This will make it even more convenient to use.

Furthermore, the time switch 26 allows you to easily set the short 1 minute increments, so if you find that the steam is not enough after steaming, or if you want to re-steam a little after steaming, you can use this timer. Settings can be made immediately with the switch 26, which makes the system extremely convenient to use.Moreover, since the steaming time to be set is the time for steam to come out, the settings are easy to understand.

Then, the thermistor 18 detects that the water stored in the pot 13 has boiled, and instead of continuously energizing the heater 12 during the set steaming time, the heater 12 is energized intermittently to generate heat. By squeezing the water, the sound of boiling water can be suppressed, allowing the steam to continue to be produced quietly. Moreover, there is no need to waste electricity to generate steam, and cooking can be done with appropriate heat.

Effects of the Invention As is clear from the description of the above embodiments, according to the present invention,
Since the system detects when the water in the pot has boiled and then sets the steaming time after boiling, the quality of steamed cooking is affected by variations in room temperature, power supply voltage, heater, etc. As a result, it is possible to perform steam cooking with stable results and good quality, so that it is possible to automate steam cooking and provide a cooker with a steaming function that is easy to use.

In addition, the standard steaming time can be automatically set according to the cooking menu selected with the selection switch, so just by selecting the menu, the steaming time will be selected.
As a result, if this steaming time is displayed, it becomes even more convenient to use.

In addition, you can easily set the time in 1-minute increments with the time switch, so if you find that the steam is not enough after steaming, or if you want to re-steam a little after steaming, you can use the time switch. Can be set up quickly,
This greatly improves the usability, and since the steaming time to be set is the time during which steam is coming out, the settings are easy to understand.

Then, the boiling detection means detects that the water stored in the pot has boiled, and during the subsequent set steaming time,
Since the heating means is not continuously energized, but is energized intermittently to reduce the heating power, the sound of boiling water can be suppressed, allowing steam to continue to be produced quietly. Furthermore, there is no need to waste electricity to produce steam, and cooking can be done with appropriate heat.

[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 circuit diagram of a rice cooker according to an embodiment of the present invention, FIG. 3 is a partial sectional view of the rice cooker, and FIG. 4 is a flowchart showing an example of a program of the rice cooker. 1... Pot, 2... Heating means, 3...
... Boiling detection means, 4 ... Steaming time setting means, 5 ... Timing means, 6 ... Heating control means, 7 ... Selection switch, 8... Time changing means, 9... Time switch, 1o...
...Intermittent control means. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 13 - Vortex No. 3 Figure 4

Claims (4)

[Claims] (1) A heating means for heating water, rice, etc. stored in a pot, a boiling detection means for detecting that the water in the pot has boiled, and a boiling detection means for detecting that the water in the pot has boiled. a steaming time setting means for setting the steaming time after detecting the boiling time; a timing means that starts operation based on the output of the boiling detection means and counts the time; A cooking appliance with a steaming function, comprising a heating control means for stopping heating by the heating means when a certain time is reached. (2) The cooking device with a steaming function according to claim 1, further comprising a selection switch for selecting a cooking menu and a time changing means for resetting the steaming time of the steaming time setting means according to the cooking menu selected by the selection switch. (3) Set the steaming time on the steaming time setting means from 1 minute,
2. The cooking device with a steaming function according to claim 1, further comprising a time switch which adds one minute each time the time switch is pressed. (4) Steaming according to any one of claims 1 to 3, further comprising intermittent control means for outputting a signal to the heating control means so as to intermittently energize the heating means only during the steaming time set by the steaming time setting means. Cooking device with functions.