JPH0810058B2 - Cooking temperature controller - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to cooking in which a cooked food is heated by a heating means such as a burner for a stove, the temperature of the cooked food is detected by a temperature sensor, and heating is completed at a temperature suitable for the cooked food. Temperature controller.

[0002]

2. Description of the Related Art In the conventional temperature control device for cooking of this kind,
For example, as shown in Japanese Examined Patent Publication No. 63-67106, the temperature rise of the cooked food is detected, and the proportional control valve is driven according to the inclination of the temperature rise to perform the proportional control of the combustion amount. There is a problem that the cost is relatively increased when the proportional control valve is used.

[0003]

DISCLOSURE OF THE INVENTION The present invention is suitable for stir-fried food because it has a relatively inexpensive structure and a simple operation for starting cooking to automatically determine whether or not the cooked food is stir-fried food cooked at relatively high temperature. The purpose is to stop the heating at a certain temperature and prevent the food from igniting or burning.

[0004]

The present invention relates to a heating means for heating an object to be cooked, a temperature sensor for contacting the bottom of a pan or the like containing the object to detect its temperature, and the detection of this temperature sensor. And a control circuit for controlling the heating means based on the temperature, wherein the control circuit detects a temperature gradient while the temperature of the temperature sensor is rising, this temperature gradient becomes a descending gradient, and this temperature drop is made in advance. If the temperature is above the preset temperature, the cooked item is judged to be stir-fried, and the upper limit temperature determination circuit that sets the upper limit temperature that stops the heating means to a preset temperature, and heats when the temperature of the temperature sensor reaches the upper limit temperature And an output control circuit for stopping the means.

[0005]

[Function] After the cooking is started, the temperature sensor has a temperature gradient which is a downward gradient, and when the downward gradient is equal to or higher than a preset predetermined temperature, the upper limit temperature determination circuit determines that the food to be cooked is a stir-fried food, and the temperature sensor When the temperature of reaches the upper limit temperature, the output control circuit stops the heating means, which causes the ignition of oil,
Prevent ignition and burning of cooked foods.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described first with reference to FIG. A grill burner (3) is mounted below the burner for the stove, and is attached to the front of the burner (2) (2) for the stove and the grill burner (not shown) mounted in the grill (3). Ignition button (4) (4) (4), which blinks
And the operation panel (5), and the burner for the stove (2)
(2) and controllers (6), (6) and (6) for manually adjusting the combustion amount of the grill burner are arranged.

As shown in FIG. 2, (7) and (7) indicate the temperature of the thermistor or the like mounted in the vent holes (8) and (8) formed in the center of the burner for stove (2) and (2). Gotoku (9) detachably attached around the burner (2) (2) for the stove with a sensor.
(9) When the frying pan, pan (10), etc. are placed on the bottom, they contact the bottom of these and detect the temperature as an analog value, and are constantly urged upward by a spring (not shown). There is.

Further, as shown in FIG. 2, the operation panel (5) has a two-digit digital display (11) and five bar-shaped L's.
A temperature indicator (13) and the like, which are formed by arranging the EDs (12), (12) ... In parallel, are arranged.

On the other hand, in FIG. 2, (14) is a control circuit, which is an A / D conversion circuit (15) for converting the analog value of the temperature sensor (7) (7) into a digital value and the ignition button (4) ( Input detection circuit (16) for detecting blinking operation of 4) and the burner (2) (2) for the stove from the temperature of the temperature sensor (7) (7)
Temperature control circuit (17) for determining or changing the upper temperature limit for stopping the combustion of fuel, and output control for controlling the solenoid valve (18) for controlling the fuel supply to the burner (2) (2) for the stove Circuit (1
It is mainly composed of 9) and.

The upper limit temperature determining circuit (17) includes an inclination detecting section (20) for detecting the temperature inclination from the temperature sensors (7) (7).
And an automatic determination unit (21) for automatically determining cooking contents by comparing and calculating the temperature gradient from the inclination detection unit, and an upper limit temperature for determining or changing the upper limit temperature according to the determination result of the automatic determination unit. It is mainly composed of a judging section (22).

The output control circuit (19) also has a solenoid valve control section (23) for driving the solenoid valve (18) according to the output of the upper limit temperature determination circuit (17), and the digital display (11). ), A temperature indicator (13), a display / buzzer controller (25) for driving a buzzer (24) and the like.

Thus, when cooking "stir-fried food", as shown in FIG. 2, a pot containing the food to be cooked above the Gotoku (9) (9).
By placing (10) etc. and operating the ignition button (4) of the placed stove burner (2) (2) to ignite the burner, cooking can be started relatively easily.

When the input detection circuit (16) detects the ignition operation by the ignition button (4), the temperature sensor (7)
As a result, a temperature gradient t in a predetermined temperature range TA to TB (for example, 80 to 90 ° C.) shown in FIG.
(Time required for temperature rise) is detected, and whether or not the temperature gradient after the temperature gradient is detected (for example, the time required for the temperature to rise by 0.5 ° C.) is a predetermined value (for example, t / 2) or more. The above-mentioned object to be cooked is determined to be "fried food", and a temperature gradient (time required for temperature rise) of a preset predetermined temperature range (for example, 10 ° C) is continuously detected and shown in Fig. 4 during this detection. As described above, if there is a temperature drop ΔT equal to or higher than a predetermined temperature (for example, 0.5 ° C.) due to the introduction of ingredients such as vegetables and wieners, the food to be cooked is determined to be “fried”.

In addition, in the case of the above-mentioned “stir-fried food” cooking, generally, a small amount of oil is put in a frying pan or the like to ignite, and after the temperature of the frying pan or the like rises to some extent, ingredients such as vegetables are put in. (7) The temperature of (7) is 100
Although the temperature drop occurs before and after the temperature exceeds ℃, it may occur when the material is put before and after the predetermined temperature range TA to TB, and the temperature drop is detected even before the predetermined temperature range, Simultaneously with the detection, the above-mentioned automatic determination unit (21) determines that the food to be cooked is “fried”.

On the other hand, the upper limit temperature determination section (22) sets the upper limit temperature to, for example, 200 ° C. at the same time when the cooking is started by the ignition operation.
The first upper limit temperature before and after is set, and then the upper limit temperature is set to a second upper limit temperature of, for example, about 260 ° C. suitable for “fried food” cooking such as frying and tempura according to the “fried food” determination of the food to be cooked. This is to change the setting, so that even if the ignition operation is performed with a small amount of oil in the frying pan etc.,
Spontaneous ignition can be prevented by setting the upper limit temperature.

The solenoid valve controller (23) is a temperature sensor.
(7) When the temperature of (7) reaches the upper limit temperature, the solenoid valve (18) is closed to stop the combustion of the burner (2) (2) for the stove, and the temperature display is accompanied by the temperature increase. Each L of the vessel (13)
If the temperature of the temperature sensors (7) and (7) approaches each upper limit temperature, the display / buzzer control unit (25) is operated when the ED (12) (12) ... For example buzzer (24)
Sounds that the temperature of the food to be cooked has risen too much, and prompts the user to operate the controller (6) to reduce the amount of heating, which causes the stove to reach the upper limit temperature during cooking. The fire of the burner (2) (2) can be prevented from extinguishing.

On the other hand, in the automatic determination unit (21), “fried food”
If the temperature of the temperature sensors (7), (7) suddenly drops below a preset specific temperature (for example, 120 ° C.) after the determination, the above-mentioned cooked material is stew, curry, etc. If the temperature of the temperature sensor (7) (7) continuously exceeds the predetermined temperature (eg 100 ° C), it is judged as "boiled food" by adding a large amount of water and slowly simmering it. The temperature when the temperature rise gradient after that is constantly updated and stored, and the temperature at the lowest time is stored as the reference temperature T, and the upper limit temperature determination unit (22) sets the upper limit temperature to the second upper limit. From the temperature to the maximum temperature for "boiled" (eg 1
When the setting of the cooking temperature is changed to 50 ℃, the cooking end temperature (for example, T + 20) is calculated, and when the temperature of the temperature sensors (7) and (7) reaches the cooking end temperature in the solenoid valve controller (23), the solenoid valve
(18) is closed to stop the combustion of the stove burner (2) (2).

With the configuration according to the present invention, when the control circuit automatically determines the food to be cooked with a relatively simple configuration and the food is determined to be the food to be heated together with the oil, or the fried food having a relatively small heat capacity among them. When it is judged that it is, or when it is judged that it is a stew such as curry or stew that is fried and then slowly boiled with water, by stopping the heating means at the upper limit temperature suitable for each cooking It is possible to prevent the ignition of oil, the food to be cooked, etc., and to prevent the burning of cooked food, thereby preventing the occurrence of a kitchen fire or the like.

[Brief description of drawings]

FIG. 1 is a perspective view of a gas table using the present invention.

FIG. 2 is a block diagram of the present invention.

FIG. 3 is a temperature characteristic diagram according to the present invention.

FIG. 4 is a temperature characteristic diagram of a main part according to the present invention.

[Explanation of symbols]

 2 Burner for stove 7 Temperature sensor 14 Control circuit 17 Upper limit temperature determination circuit 18 Output control circuit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yoshifumi Ozaki Inventor Yoshifumi Ozaki 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Tottori Sanyo Electric Co., Ltd. (56) Reference JP-A-5-44922 (JP, A)

Claims (2)

[Claims] 1. A heating means for heating an object to be cooked, a temperature sensor for contacting with a bottom surface of a pan or the like for accommodating the object to be cooked to detect its temperature, and the heating means based on the temperature detected by the temperature sensor. A control circuit for controlling, wherein the control circuit detects a temperature gradient while the temperature of the temperature sensor is rising, and this temperature gradient is a downward gradient, and this temperature drop is equal to or higher than a preset predetermined temperature. If so, the cooked item is determined to be stir-fry, and the upper limit temperature determining circuit for setting the upper limit temperature for stopping the heating means to a preset temperature, and the heating when the temperature of the temperature sensor reaches the upper limit temperature. A cooking temperature control device comprising an output control circuit for stopping the means. 2. When the temperature of the temperature sensor drops below the specific temperature after the upper limit temperature determination circuit determines that the food to be cooked is stir-fried and sets the upper limit temperature, the food to be cooked is lowered. The cooking temperature control device according to claim 1, wherein the cooking temperature control device is configured to be determined to be a simmered product, and the upper limit temperature is changed to a preset simmered product upper limit temperature that is lower than the stir-fried product.