JP3993685B2 - Cooker - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cooking device that detects the temperature of a cooking container with a temperature sensor and controls the amount of heating of a heat source so that the rice cake can be cooked based on the temperature detected by the temperature sensor.
[0002]
[Prior art]
In general, the procedure for cooking rice cake is to use a cooking container with a lid like a culture pot, boil by heating with a large amount of heat, then reduce the amount of heat so that moderate stickiness occurs, Cook until soft.
[0003]
[Problems to be solved by the invention]
As mentioned above, when cooking rice cake, it is necessary to produce stickiness and to make the rice soft, so that it must not be spilled from boiling to cooking and sufficiently heated. To prevent spillage, it is necessary to open the lid, move the lid, or cook while stirring. Also, sometimes there is a difference in water. That is, a measure may be taken to lower the temperature of the food in the cooking container after boiling. On the other hand, when the temperature of the food is lowered, the rice may not be sufficiently soft, and it is not possible to cook a well-made rice bran.
[0004]
The present invention has been made in view of the above-mentioned reasons, and its purpose is to provide a cooking device that automatically adjusts the amount of heating when cooking koji and cooks koji well. There is to do.
[0005]
[Means for Solving the Problems]
The invention according to claim 1 is based on a gas burner for heating the cooking container, a temperature sensor for detecting the temperature of the cooking container, a timer for measuring the heating time, a temperature detected by the temperature sensor, and a heating time measured by the timer. A control circuit for adjusting the amount of heating of the gas burner , and the control circuit detects the equilibrium state of the temperature detected by the temperature sensor when cooking the soot, and the amount of heating after the equilibrium state is detected by the equilibrium detection unit. And a cooking means for stopping heating at the end of the cooking period timed by the timer, and the equilibrium detection means samples the temperature detected by the temperature sensor during the equilibrium detection period defined after ignition of the gas burner. It determines that the degree of dispersion of the sampled values of the defined number has reached equilibrium becomes less than the threshold value, means raising cook is a gas burner If the temperature detected by the temperature sensor drops below the equilibrium temperature detected by the temperature sensor when the equilibrium detection means detects the equilibrium state, the temperature detected by the temperature sensor is close to the equilibrium temperature. is the even Ru intermittently increasing the heating amount of the gas burner until the maintenance temperature set in.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
( Basic configuration )
Since the purpose of the present invention is to cook rice cake, the cooking container is assumed to have a lid like a culture pot. In addition, as a gas stove, there is a gas stove having a function of discriminating between cooking of water that is a cooked product such as boiled food and soup, and cooking of oil such as fried food that cooks cooking oil. Although provided, the firewood is different from ordinary water cooking in controlling the thermal power, so that the user operates the switch button (not shown) to specify when cooking the firewood.
[0008]
As shown in FIG. 1A, a temperature sensor 6 composed of a thermistor is disposed near the center of a gas burner 8 provided in the gas stove 1, and this temperature sensor 6 is shown in the figure by a built-in pressing spring (not shown). It is biased upward. The temperature sensor 6 is normally arranged so that the flame of the gas burner 8 does not directly hit it. Further, the tip surface (upper surface in the figure) of the temperature sensor 6 is located above the upper surface of the virtues 4 in a state where the cooking container 5 such as a pan or a frying pan is not placed on the virtues 4 arranged around the gas burner 8. Protruding . Placing cooking container 5 five virtue 4, the compression spring is compressed a temperature sensor 6 is elastically contacted to the bottom of the cooking container 5. Therefore, the temperature sensor 6 can detect the temperature of the bottom of the cooking container 5.
[0009]
On the flow path of the fuel gas to the gas burner 8, the flow rate to the gas burner 8 is automatically controlled by an instrument plug 2 for manually igniting and extinguishing the gas burner 8 and adjusting the flow rate of the fuel gas, and a control circuit 7 to be described later. And a gas supply control device 3 having a function of shutting off the fuel gas when there is an abnormality. The gas supply control device 3 includes a safety valve 3 a made up of an electromagnetic valve that is opened when the gas burner 8 is ignited, and a flow rate adjusting valve 3 b made up of an electromagnetic valve that adjusts the flow rate of fuel gas supplied to the gas burner 8. A bypass passage 3c is provided in parallel with the flow rate adjusting valve 3b, and the amount of fuel gas supplied to the gas burner 8 is switched in stages according to the opening and closing of the flow rate adjusting valve 3b. Here, an example in which the supply amount of the fuel gas is switched to two stages is shown, but if it is necessary to switch to three or more stages, a plurality of flow rate adjusting valves 3b may be provided and a plurality of flow paths may be provided in parallel. By providing such a flow rate adjusting valve 3b, the heating power of the gas burner 8 can be switched by opening and closing the flow rate adjusting valve 3b while the gas burner 8 is ignited. Hereinafter, medium heat the heating power is high state, because switching thermal small state small fire and hump (the thermal moth Subana 8 in two stages, but is where should be called fire and small fire would otherwise, The purpose is to cook firewood and it is called medium heat because it is moderate as the relative heating power with respect to the maximum output heat amount of the gas burner 8).
[0010]
The safety valve 3 a and the flow rate adjustment valve 3 b are controlled by the control circuit 7. The safety valve 3a is opened together with the operation of the instrument stopper 2 when igniting the gas burner 8, there is to be closed when stopping the combustion of the gas burner 8, is closed when the porridge is raised cooking. The heating time by the gas burner 8 after the safety valve 3a is opened is counted by the timer 9. The control circuit 7 has a microcomputer as a main component, and controls the safety valve 3a and the flow rate control valve 3b based on the temperature detected by the temperature sensor 6 and the heating time measured by the timer 9.
[0011]
Therefore, in order to automate the heating / discharging when cooking the rice cake, it is necessary to determine whether or not the food in the cooking container 5 has reached a boiling state. Equilibrium detection means 11 is provided. Moreover, after reaching the boiling state, it is necessary to lower the heating power and cook, so the cooking means 12 for performing the cooking process is provided. Specifically, as shown in FIG. 1B, the initial heating period T1, which is a fixed time (for example, 10 minutes) from the ignition of the gas burner 8, is heated with a small fire, and the initial heating period T1 ends and the equilibrium is detected. When it becomes period T2, it switches to medium heat. When the cooked product is in a substantially boiling state in the equilibrium detection period T2, the temperature sensor 6 is in an equilibrium state in which the temperature change detected by the temperature sensor 6 is small. The equilibrium detection means 11 detects such an equilibrium state. For example, the equilibrium detection means 11 samples the detection temperature at regular time intervals, and the spread degree of the sampled values for each specified number (for example, 5) becomes less than the threshold value. It is determined that the equilibrium state has been reached.
[0012]
In this way, when the equilibrium state is detected at time ta, the equilibrium detection period T2 is ended by heating with medium heat for a certain period of time (for example, 6 minutes). Thereafter, in the cooking period T3, which is a fixed time (for example, 22 minutes) from the end of the equilibrium detection period T2, the heating is continued with the heat of the gas burner 8 as a small fire, and the safety valve 3a is turned on when the cooking period T3 ends. closed to you extinguish the gas burner 8. Rights and fired a raised cooking means 12 of衡state at the time ta after the detected gas burner 8 is managed by means 12 up cook is fired first were terminated balanced detection period T2 after a predetermined time from the detection of the equilibrium The process that lowers to a small fire. Thereafter, during the cooking period T3, the heating power of the gas burner 8 is intermittently switched to medium heat so that the temperature of the cooked product is maintained at approximately 100 ° C.
[0013]
As described above, it is a feature of the present invention that it is intermittently switched to medium heat in the cooking period T3 which is a small fire, and if it is left in a small fire in the cooking period 3, The following problems will occur. That is, if the lid of the cooking container is opened or shifted so that no spilling occurs during the cooking period 3 (the time of such operation is indicated by tb), as shown in <1> (broken line) in FIG. Thus, the temperature of the cooked product gradually decreases (the circled numbers in the figure are represented by <> numbers) . Note that <2> (solid line) in FIG. 3 indicates the temperature detected by the temperature sensor 6. As described above, when the temperature of the food in the cooking container 5 is lowered, the rice is not sufficiently heated (the period of heating near 100 ° C. is shortened) and becomes hard rice cake.
[0014]
Where, is than switch to intermittently medium heat in the period T3 raised cooked as above described, it is to the medium heat firepower of only the gas burner 8 constant increment time at regular time intervals. By such processing, as shown in <1> (broken line) in FIG. 1B, the temperature of the cooked food in the cooking container 5 is maintained near the temperature at which the equilibrium state is detected (equilibrium temperature). Thus, the cooked food in the cooking container 5 can be sufficiently heated in the cooking period T3.
[0015]
The operations described above are summarized as shown in FIG. That is, when the gas burner 8 is selected (selected by the operation unit) and the gas burner 8 is ignited (S1), the small fire is set and heated (S2). When 10 minutes, which is the initial heating period T1 of a certain time, has elapsed (S3), the medium cooking is switched to (S4), and the cooked food in the cooking vessel 5 is boiled. When the cooked product is boiled and an equilibrium state is detected (S5), six minutes after the detection of the equilibrium state (S6), the equilibrium detection period T2 is terminated and the firepower is reduced by switching to a small fire (S7). After that, until 22 minutes, which is the cooking period T3 (S9), the process of heating with medium heat (S10) is repeated for every fixed time (S8) for a fixed increase time (S11) (S10). When the cooking period T3 ends (S9), the gas burner 8 is extinguished (S12). With the above procedure, you can cook soft rice cake without failure.
[0016]
( Embodiment )
In the present embodiment, the process of intermittently increasing the thermal power in the cooking period T3 is performed based on the temperature detected by the temperature sensor 6 instead of time. That is, the temperature detected by the temperature sensor 6 at the time point ta when the equilibrium state is detected by the equilibrium detection means 11 is defined as the equilibrium temperature th1 (see FIG. 4), and the temperature detected by the temperature sensor 6 is changed from the equilibrium temperature th1 to a specified temperature (for example, 3 When the temperature is lowered by [° C.], the heating power of the gas burner 8 is switched to medium heating so as to raise the detected temperature. The period during which the gas burner 8 is set to medium fire is set until the detected temperature reaches a maintenance temperature near the equilibrium temperature th1. Here, it is desirable to set the maintenance temperature slightly higher than the equilibrium temperature.
[0017]
When the above process is performed during the cooking period T3, the temperature of the cooked food in the cooking container 5 is kept at around 100 ° C. as shown in <1> (broken line) in FIG. be able to. Other configurations and operations are the same as the basic configuration . In the configuration example described above, the thermistor is used as the temperature sensor 6, but another temperature sensor may be used, and the temperature of the cooking container may not necessarily be detected by contacting the bottom of the cooking container. For example, you may use what detects temperature from the heat dose radiated | emitted from a cooking vessel, and what detects the internal temperature of a cooking vessel.
[0018]
【The invention's effect】
According to the configuration of the invention of claim 1, can be kept at a relatively high temperature the temperature of the food by intermittently increasing the amount of heating gas burner in 炊-out up period, the food sufficiently heated There is no inconvenience that the koji becomes hard while preventing spilling, and the koji can be cooked without failure.
[0019]
Also, since adjusting the heating amount of the gas burner to manage the temperature detected by the temperature sensor, the temperature of the food can be reliably maintained, wide tolerance for variation in the amount of types and food of the cooking container Become.
[Brief description of the drawings]
1A and 1B show a basic configuration, in which FIG. 1A is a schematic configuration diagram, and FIG.
FIG. 2 is an operation explanatory diagram showing the processing procedure of the above.
FIG. 3 is an operation explanatory diagram of a comparative example.
FIG. 4 is an operation explanatory diagram illustrating the embodiment .
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Gas cooker 2 Instrument plug 3 Gas supply control means 3a Safety valve 3b Flow control valve 3c Bypass path 4 Gotoku 5 Cooking container 6 Temperature sensor 7 Control circuit 8 Gas burner 9 Timer 11 Equilibrium detection means 12 Cooking means

Claims (1)

Gas burner for heating the cooking vessel, temperature sensor for detecting the temperature of the bottom of the cooking vessel, timer for measuring the heating time, and heating amount of the gas burner based on the temperature detected by the temperature sensor and the heating time measured by the timer A control circuit for adjusting the temperature, the control circuit detects the equilibrium state of the temperature detected by the temperature sensor when cooking the rice cake, and reduces the heating amount after detecting the equilibrium state by the equilibrium detection unit. Cooking means that stops heating at the end of the cooking period that is timed by a timer, and the equilibrium detection means samples the temperature detected by the temperature sensor during the equilibrium detection period that is defined after the ignition of the gas burner, and samples a specified number of samples. determines that the degree of dispersion of values has reached an equilibrium state becomes below the threshold, means raising cooked is a heating amount by the gas burner If the temperature detected by the temperature sensor drops below the equilibrium temperature detected by the temperature sensor when the equilibrium detection means detects an equilibrium state, the temperature sensor detects that the temperature detected by the temperature sensor is set near the equilibrium temperature. cooker, wherein the benzalkonium intermittently increases the heating amount of the gas burner until the maintenance temperature are.

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