JP2664566B2 - Cooker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a function of automatically adjusting a heating state according to various modes such as cooking, frying and baking, and a function of automatically stopping the heating state in a specific situation. The present invention relates to a heating cooker provided.

[0002]

2. Description of the Related Art As a cooking device such as a gas stove, depending on a cooking method such as boiling, frying (including frying with oil) or baking, for example, combustion control of a heating means such as a burner (a small fire, There is a type in which the heating temperature of the cooked food can be automatically adjusted by performing a large fire switch. Further, a method of estimating the heating temperature of the food from the output of a temperature sensor that detects the temperature by contacting the bottom of a container such as a pot that is heated with the food is generally adopted.

In this type of heating cooker, if a cooking mode is set, for example, (hereinafter, this mode is called a cooking mode), the temperature detected by the temperature sensor becomes the temperature at which it is determined that the product is burnt. When this happens, the burner is automatically extinguished to prevent the food from burning. Also, if you set the mode to fry or fry the food (hereinafter, this mode is called oil mode), keep the oil temperature constant or when the oil temperature becomes abnormally high The fire can be extinguished automatically.

Further, if a cooking mode is set for baking, automatic extinguishing can be performed when the heating temperature rises abnormally.

[0005]

By the way, the prevention of scorching in the case of boiled food in this type of heating cooker is based on the fact that the output of the temperature sensor is determined by evaporating water in a container (hereinafter described in the case of a pan). To reach a predetermined temperature. However, when cooking in the boiled food mode, the fire may be automatically extinguished even if the detected temperature rises to the predetermined temperature due to other factors. In other words, during cooking, if the pan is moved up or the pan is lifted from above, the temperature of the temperature sensor rapidly rises to reach the predetermined temperature and the fire is automatically extinguished.

[0006] In addition, when cooking food is fried, there is a case where the pot is moved up like a pot or the pot is floated from the whole so that there is a problem that the fire is automatically extinguished. The present invention has been made in view of the above points, and an object of the present invention is to provide a cooking device capable of preventing a fire from being automatically extinguished when a container is moved upward or floated. It is in.

[0007]

According to the present invention, in order to achieve the above object, a heating means for heating a food and a temperature for detecting a temperature by contacting the bottom of a container to be heated with the food contained therein. Temperature detecting means such as a sensor, mode setting means for setting various modes such as cooking, frying and baking, and heating of the heating means according to the mode set by the mode setting means and the output of the temperature detecting means. A temperature control unit that automatically adjusts the state to a predetermined state and automatically stops the heating state in a specific situation; and a temperature rise rate detection unit that repeatedly detects a temperature rise rate from an output of the temperature detection means. Fire extinguishing temperature control that raises the temperature at which automatic extinguishing is performed by a predetermined temperature when the state in which the temperature rising rate detected each time by the temperature rising rate detection unit is equal to or more than a predetermined number of times continues for a predetermined number of times. Department It is provided to the serial heating control means.

[0008] More specifically, the temperature rise rate detecting section measures the required time at fixed temperature intervals to determine the rise rate, and the fire extinguishing temperature control section determines that the required time is less than the fixed time. The temperature at which the fire is automatically extinguished may be increased when a plurality of fires are consecutively performed.

[0009]

According to the above configuration, the temperature rise in the case where the flame is fueled by or or floating or moving the vessel when performing the cooking, is rapidly than the temperature rise, such as when attached up focus Focusing on the point, a temperature rise rate detection unit that repeatedly detects the temperature rise rate from the output of the temperature detection means, and a state where the temperature rise rate detected by the temperature rise rate detection unit every time is equal to or higher than a predetermined By providing a heating control means with a fire extinguishing temperature control unit that raises the temperature for performing automatic fire extinguishing by a predetermined temperature in the case of a plurality of continuous fires, discrimination between scorching and cases where the container is moved or floated is performed, and the container is moved. In the event that the fire extinguishes or floats, the temperature for performing automatic fire extinguishing is increased by a predetermined temperature so that the fire is not automatically extinguished during cooking. Especially
When the temperature rise rate is equal to or higher than a certain
The fire extinguishing temperature is raised when
Don't misunderstand that you're floating or scorching
Detection and correct fire extinguishing temperature without malfunction.
Will be possible.

[0010]

FIG. 1 shows an example of a cooking device to which the present invention is applied. The heating cooker is a gas stove, in which gas supplied through an electromagnetic valve (or a proportional control valve) 4 is burned by a burner 1 as a heating means, and a container (hereinafter referred to as a pan) in which a food 3 is put. (Certain cases will be described.) 2 is cooked by heating. Although not shown in FIG. 1, an ignition knob for performing ignition, fire extinguishing, and thermal power adjustment is provided, and the thermal power can be manually adjusted.

[0011] In the case of this heating cooker, the degree of heat can be automatically adjusted according to cooking such as boiling, frying (including the case of frying with oil) or baking. Are set by the mode setting unit 8. The mode setting unit 8 includes a setting unit for setting a temperature setting, a heating time, and the like, in addition to a mode switching switch for switching a mode.
And a display unit for displaying the set value, the current value, and which mode is being operated.

The combustion control of the burner 1 according to these modes is performed by a signal processing unit 6 constituted by a microcomputer. The signal processing unit 6 stores a processing program corresponding to each mode, and the driving unit 7 according to the temperature of the food 3.
By controlling the open state of the solenoid valve 4 through the control of the burner 1, the combustion state of the burner 1 is controlled. That is, in the case of the present embodiment, the above-mentioned signal processing unit 6, driving unit 7, and solenoid valve 4 constitute a heating control unit.

In this type of cooking device, the temperature of the food 3 cannot be directly detected.
A method of estimating the temperature of the food 3 by using a temperature sensor 5 such as a thermistor as a temperature detecting means that contacts the bottom of the pot 2 is adopted. The cooking mode of the heating cooker according to the present invention will be described below. First, in the boiled food mode,
When the temperature detected by the temperature sensor 5 reaches a temperature at which it is determined that burning occurs, the electromagnetic valve 4 is closed and the burner 1 is automatically extinguished to prevent burning. At this time, the user is simultaneously notified of the burning by a notification means such as a buzzer. In the case of the boiled food mode, the user can set the time to boil. When the time is set in this manner, the fire is automatically extinguished after the set time elapses. However, even before the elapse of the set time, if the burning is detected, the fire is automatically extinguished.

Next, in the oil mode, the amount of combustion (thermal power) of the burner 1 is automatically adjusted to the upper limit temperature when frying or frying below the temperature at which the oil ignites. Note that the upper limit temperature can be set to a desired temperature according to cooking by the user. Also in this oily mode, when a deep-fried or stir-fried one is performed, automatic extinguishing is performed if the temperature rises to an abnormal level due to some factor.

In the baking mode, the combustion amount (thermal power) of the burner 1 is automatically adjusted to the upper limit temperature. However, the upper limit temperature in the baking mode is adjusted to be higher than that in the oil mode. In this case, if the temperature abnormally rises above the upper limit temperature, automatic fire extinguishing is performed. In addition, this cooking device has a water heater mode that is convenient for boiling water, detects the boiling state of the water from the output of the temperature sensor 5, notifies the buzzer, etc., and automatically extinguishes the fire. Have. The boiling state of the hot water can be detected because the temperature of the water becomes substantially constant when the water boils, and the output of the temperature sensor also becomes substantially constant.

By the way, as a function commonly provided in all the above-mentioned modes, there is provided a function of operating a timer for preventing extinguishing at the same time as ignition and automatically extinguishing the fire after a lapse of a time set in the timer. . by the way,
As described above, when the food is boiled or fried, the pot is moved up (shaking) or floated, and the flame of the burner 1 is heated to heat the temperature sensor 5, As shown in FIG. 4, the output of the temperature sensor 5 may increase rapidly. In this case, the output is a predetermined temperature of the temperature sensor 5 (in the case of boiled mode, automatic fire extinguishing temperatures nonstick) reaches T _3, the burner 1 is automatically extinguished poor usability in the case of performing cooking.

Therefore, in this embodiment, in order to improve the above points, the signal processing unit 6 has the following configuration. That is,
As shown in FIG. 2, an A / D converter 61 that converts the output of the temperature sensor 5 into digital data, and a temperature rise rate detector 62 that detects the rate of temperature rise detected by the temperature sensor 5.
And a data storage unit 64 for storing data such as temperature for automatic fire extinguishing, and a data storage unit 64 for storing the temperature rise rate detected by the temperature rise rate detection unit 62 when the state where the temperature rise rate is equal to or higher than a certain value continues. A correction unit 63 for correcting the temperature for automatic fire extinguishing to increase by a predetermined temperature;
It comprises a correction data storage unit 65 for storing correction data for automatic fire extinguishing obtained in 3 and a control unit 66 for controlling the drive unit 7 according to the correction data. That is, in the present embodiment, the fire extinguishing temperature adjusting unit includes the correction unit 63, the correction data storage unit 65, and the control unit 66. The correction unit 6
Reference numeral 3 reads data (temperature data for automatic fire extinguishing in this embodiment) as appropriate according to the setting of the mode setting section 8 from the data storage section 64 and performs correction. Further, in the case of the present embodiment, each of the above-described units is configured as software, but may be configured as hardware using a discrete circuit.

Incidentally, the temperature rise rate detecting section 62
There are various methods for detecting the rate of temperature rise
However, in the case of the present embodiment, the pan which is the output of the temperature sensor 5
The bottom temperature is the predetermined temperature T₁Detect the time required for each climb
Thus, the rate of temperature rise is detected. However, this
When the temperature rise rate is detected, the cooked food is not boiled.
It ’s no use going from the state, so cook the food and boil it down.
Temperature T determined to be approaching_TwoTo do from
is there. Then, in the correction unit 63, the predetermined temperature T ₁Rise
The required time is a predetermined time t for N consecutive times.₁Less than
If not, the pot is shaken instead of scorching,
It has a function to judge that it is a case of being floated, and a pot
If the is shaken or floated,
Raises the temperature for automatic fire extinguishing in the airplane by a specified temperature
Correction as follows. In the case of the present embodiment, normal burning
T_ThreeThe correction in the above case
Automatic fire extinguishing temperature after_ThreeHigher temperature T_FourLike
It is. If you do this, when you are cooking
Automatic extinguishing when the pot is shaken or floated
As the temperature rises, automatic fire extinguishing is not performed as shown in FIG.
No.

[0019] However, since the undesirable from safety surface to increase indefinitely the temperature of the automatic fire extinguishing, a provided above upper limit T _4, time beyond the normal automatic fire extinguishing temperature simmered mode a predetermined time t ₂ There is a restriction so that automatic fire extinguishing is performed when the time elapses. In this way, when the pot 2 is removed and left unattended, fire extinguishing can be performed, which is safe and preferable. Further, when a small amount of the food 3 is warmed, a situation similar to the above-described case may occur, but in this case, if the above-described restriction is provided, no problem occurs in cooking.

Once the temperature drops below T ₃ , the operation for raising the temperature for automatic fire extinguishing is reset. In addition, the state shown on the right side of the output state of the temperature sensor 5 when the pan 2 is shaken in FIG.
Shows a state in which the food 3 boiled down, the temperature increase rate in this case is gentle, the operation to raise the automatic fire extinguishing temperature T ₄ is not performed, the order is automatically extinguishing a normal-stick detected temperature T _3, scorching Is prevented.

FIG. 3 is a flowchart summarizing the above operation. Note that the timer and counter in the flowchart are built in the signal processing unit 6, and the above-described internal configuration is realized by software using these. by the way,
In the above case, the case of boiled food mode was explained,
Even in the oil mode, particularly when frying a food, the container may be shaken or floated. Therefore, in such a case, if the temperature at which the automatic fire extinguishing is performed is increased, the usability is improved in the same manner as in the case of the stewed food mode.

[0022]

According to the present invention, as described above, the heating means for heating the food, and the temperature detecting means such as a temperature sensor for detecting the temperature by contacting the bottom of the container into which the food is put and heated, Mode setting means for setting various modes such as cooking, frying, baking, etc., and automatically sets the heating state of the heating means to a predetermined state according to the mode set by the mode setting means and the output of the temperature detecting means. And adjust
Heating control means for automatically stopping the heating state in a specific situation, and repeating the rate of temperature rise from the output of the temperature detection means.
And temperature rise rate detection unit for detecting return, increasing the temperature at which state the temperature rise rate detection unit every temperature increase rate detected by is constant or performing automatic extinguishing when successive predetermined plurality of times by a predetermined temperature since the fire extinguishing temperature adjustment portion is provided on the heating control means, it is possible to distinguish between the case where or or or floating moving scorching a container, the container
When moving or floating, the temperature for performing automatic fire extinguishing is increased by a predetermined temperature, so that automatic fire extinguishing is not performed during cooking. In particular, the rate of temperature rise
The fire extinguishing temperature is set when the above condition is repeated a predetermined number of times.
Moving or floating the container because it is raised
Is detected without misidentifying
That the fire extinguishing temperature can be corrected without
To play.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a configuration of a signal processing unit according to the first embodiment.

FIG. 3 is a flowchart showing a main operation of the embodiment.

FIG. 4 is an explanatory diagram showing temperature characteristics detected by a temperature sensor when the pan is shaken or floated.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Burner 2 Pot 3 Cooking thing 4 Proportional control valve 5 Temperature sensor 6 Signal processing part 7 Drive part 8 Mode setting part 62 Temperature rise rate detection part 63 Correction part 64 Data storage part 65 Correction data storage part 66 Control part

Continued on the front page (72) Inventor Makiko Nagano 4-1-2, Hirano-cho, Chuo-ku, Osaka-shi Inside Osaka Gas Co., Ltd. (72) Inventor Yutaka Yoshida 1-1-52, Oka, Minami-shi, Minato-ku, Osaka-shi Harman Co., Ltd. (72) Inventor Masao Uehara, 1-15-1 Oka, Minami-shi, Minato-ku, Osaka-shi Inside Herman Co., Ltd. (72) Inventor Tomoko 1-52, Oka, Minami-shi, Minato-ku, Osaka-shi Inside Herman Co., Ltd. (72) Inventor Eriko Aoki 1-1-52 Oka, Minami-shi, Minato-ku, Osaka-shi Harman Co., Ltd. (56) References JP-A-4-313620 (JP, A)

Claims (2)

(57) [Claims] 1. A heating means for heating a food, a temperature detecting means such as a temperature sensor for detecting a temperature by contacting the bottom of a container to which the food is put and heated, and boiling, frying and baking the food. Mode setting means for setting various modes such as, and automatically adjusting the heating state of the heating means to a predetermined state according to the mode set by the mode setting means and the output of the temperature detecting means, and in a specific situation. A heating control means for automatically stopping the heating state, a temperature rise rate detecting section for repeatedly detecting a temperature rise rate from an output of the temperature detecting means, and a temperature every time detected by the temperature rise rate detection section. The heating control means is provided with a fire extinguishing temperature control unit that raises the temperature at which automatic fire extinguishing is performed by a predetermined temperature when the state in which the degree of increase is equal to or more than a predetermined number of times continues. Cooker 2. The method according to claim 1, wherein the temperature rise rate detecting section measures a required time at predetermined temperature intervals to determine a rise rate, and the fire extinguishing temperature control section determines that the required time is less than or equal to the fixed time a plurality of times. The heating cooker according to claim 1, wherein the temperature for automatically extinguishing the fire is increased.