JPH0810059B2 - Cooking temperature controller - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is for heating fried foods such as tempura and simmered foods with a heating means such as a burner for a stove, and detecting the temperature of these foods with a temperature sensor, which is particularly suitable for fried foods. The present invention relates to a cooking temperature control device that controls heating means by temperature.

[0002]

2. Description of the Related Art For example, Japanese Patent Publication No. 2-28062 discloses a cooker such as a stove that detects the temperature of the bottom of a pot and increases or decreases the amount of heating by a heating means according to the detected temperature. However, when the heating amount is increased or decreased by using the proportional control valve or the like as described above, the heating amount can be finely controlled, but there is a problem that the cost is increased.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention According to the present invention, without using a comparatively expensive proportional control valve or the like, it is possible to heat at a temperature suitable for deep-fried foods while eliminating the need for operating switches and keys according to the contents of cooking. The purpose is to stop.

[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. A control circuit for controlling the heating means based on the temperature, wherein the control circuit sets the upper limit temperature at which the heating means is stopped at the start of cooking to a preset first upper limit temperature, and from the information of the temperature sensor, A temperature gradient in a predetermined temperature range determined in advance is detected, and the temperature gradient after the detection rises above a preset specific temperature in a state of being below a preset value until it rises to a preset temperature. Then, the food to be cooked is determined to be fried and the upper limit temperature is set to the first value.
And an output control circuit for stopping the heating means when the temperature of the temperature sensor reaches the upper limit temperature, and a second upper limit temperature higher than the upper limit temperature.

[0005]

With the start of cooking, the upper limit temperature determining circuit sets the upper limit temperature to the first upper limit temperature, and after the start of cooking, until the temperature detected by the temperature sensor rises to a predetermined temperature set in advance,
If the temperature gradient up to that point rises above a preset specific temperature without exceeding a preset predetermined value, the upper limit temperature determination circuit determines that the food to be cooked is fried and the upper limit temperature is set to the second upper limit.
Change to the upper limit temperature of the
When the upper limit temperature is reached, the output control circuit detects this and stops the heating means to prevent oil ignition and food cooking.

[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 "fried food", as shown in FIG. 2, a pot (10) containing an object to be cooked such as oil is placed above the Gotoku (9) (9) and placed. Burner for the stove (2)
By operating the ignition button (4) of (2) to ignite the burner, cooking can be started relatively easily.

When the input detection circuit (10) detects the ignition operation by the ignition button (4), the temperature sensor
(7) detects the temperature gradient t (time required for temperature rise) in a predetermined temperature range T0 to T1 (for example, 80 to 90 ° C.) shown in FIG. 3 via the inclination detection unit (20), and Temperature gradient after detection of temperature gradient (for example, time to rise 0.5 ° C)
Is greater than or equal to a predetermined value (for example, t / 2), and if greater than or equal to the above, it is determined that the food to be cooked is a "boiled food", and the temperature is less than or equal to the predetermined value The temperature gradients T0 to T1, T1 to T2, T2 to ... of the set predetermined temperature range (for example, 10 ° C) (time required for temperature rise) t1, t2, ... are detected and set in advance. If there is a certain time (for example, 25 seconds) or more even once until the temperature rises to a specific temperature (for example, 190 ° C.), it is determined that a relatively large amount of oil is heated, and the food to be cooked is “ Fried food "is determined.

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 temperatures of (7) reach the above-mentioned upper limit temperatures, the solenoid valve (18) is closed to stop the combustion of the burner (2) (2) for the stove, and the temperature is changed as shown in FIG. As the temperature of the sensor (7) (7) rises, each LED (12) (1) of the temperature indicator (13)
2) ··· is turned on or blinked sequentially, and the temperature of the temperature sensor (7) (7) is 180 ℃, which is suitable for “fried food” cooking.
The first time, the buzzer (24) is driven to prompt the user to add material.

Further, if the temperature of the temperature sensor (7) approaches each of the above upper limit temperatures, the display / buzzer controller (25).
For example, sound a buzzer (24) to notify that the temperature of the food to be cooked is too high, and notify the user of the above controller.
Operate (6) to urge to lower the amount of heating, which causes burner for stove due to reaching the upper limit temperature during cooking (2)
The fire extinguishing of (2) can be prevented.

On the other hand, if the temperature of the temperature sensor (7) reaches the upper limit temperature without being judged as "fried food" by the automatic judgment unit (21), the solenoid valve control unit (23) controls the solenoid valve (18). ),
For example, even if tempura is cooked with a small amount of oil by mistake, ignition is prevented.

[0018]

According to the structure of the present invention, when the object to be cooked is automatically judged by the control circuit with a relatively simple structure and it is judged that the object to be cooked is heated together with the oil, or relatively large amount among them. If it is determined to be fried food that heats oil,
By stopping the heating means at the upper limit temperature suitable for each cooking, it is possible to reliably prevent the ignition of oil, the ignition of foods, etc. When it is turned on, a buzzer or the like will notify the user, and the usability will be greatly improved.

[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 an operation explanatory diagram of the main part of the present invention.

[Explanation of symbols]

 2 Burner for stove 10 Pan 14 Control circuit 17 Upper limit temperature determination circuit 19 Output control circuit 24 Buzzer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshifumi Ozaki 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture, Tottori Sanyo Electric Co., Ltd. (56) Reference JP-A-3-140711 (JP, A) JP-A-63 -153328 (JP, A) Actually open Sho 61-49202 (JP, U)

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 the above-mentioned control circuit, the above- mentioned heating means when starting cooking.
Set the upper limit temperature to stop to the preset first upper limit temperature
In addition , the temperature gradient in a predetermined temperature range determined in advance from the information of the temperature sensor is detected, and the temperature gradient after the detection is kept at a predetermined value or less until it rises to a predetermined temperature. , Rises above a preset specific temperature
Then, the above-mentioned cooked food is determined to be fried food, and the above-mentioned upper limit temperature is set.
From an upper limit temperature determination circuit that changes to a second upper limit temperature that is higher than the first upper limit temperature, and an output control circuit that stops the heating means when the temperature of the temperature sensor reaches the upper limit temperature. A cooking temperature control device characterized by being configured. 2. The output control circuit is configured to notify by a buzzer or the like when the temperature of the temperature sensor reaches a preset fried food temperature suitable for fried food cooking. The temperature control device for cooking according to 1.