JP2634113B2 - Cooker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating control method in a heating cooker having a function of automatically controlling a heating state when reheating is performed after a temporary stop of heating.

[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. In addition, 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, into which the food is heated is generally adopted.

In this cooking device, if a cooking mode is set, for example, (hereinafter, this mode is referred to as a cooking mode), the temperature detected by the temperature sensor becomes a temperature at which it is determined that the food is burnt. When burned, 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]

However, in a conventional heating cooker of this type, the above-described heating control is generally performed only when the heating means is heating the food, and the heating state by the heating means is not so large. Was stopped once, the data collected before the stop of the heating was initialized, and the data was newly collected after reheating.

[0006] However, when the heating state is temporarily stopped, if the data is initialized and new data is collected again, the heating is temporarily stopped in the course of cooking, but it is necessary to continue the cooking. A problem arises when heating is started again. In other words, when the heating is temporarily stopped during the cooking and then restarted to continue the cooking again, the temperature of the container such as a pot is high, and in this case, the judging means is detected by the temperature detecting means. That is, data for cooking is collected from a state where the temperature is high, and temperature determination such as automatic heating control or automatic heating stop suitable for the cooking mode is performed. For this reason, an error may occur in the data collected before and after the stop of the heating, which causes a problem that appropriate heating control of the food cannot be performed.

[0007] For example, in the cooking mode, when heating is temporarily stopped during cooking and then resumed to continue the cooking again, the temperature of a container such as a pan is high. The temperature of the food is very close to the boiling state or remains boiling, and if the boiling detection is performed again in this state, an error occurs in the boiling detection temperature before the heating is stopped and after the reheating (for example, the boiling detection is performed). Temperature may increase). For this reason, there is a possibility that problems such as a delay in automatic heating stop processing for preventing scorching determined based on the boiling detection temperature (cooking of the cooked food) may occur.

[0008] The present invention has been made in view of the above points, the object is to temporarily stop the heating,
An object of the present invention is to provide a heating cooker that can appropriately perform processing after reheating is restarted according to the situation.

[0009]

According to the present invention, in order to achieve the above object, the determining means reads the temperature detected by the temperature detecting means even after the heating of the food by the heating means is temporarily stopped. At the time when heating is resumed, it is determined whether cooking is substantially continued, and when it is determined that cooking is substantially continued, data collected before stopping heating is used as it is. The heating control of the food is performed, and when it is determined that the cooking is substantially interrupted, the data before the heating is stopped is initialized to collect data for the heating control of the new food. .

[0010]

The present invention has the above-described structure,
Once the heating has been stopped, it is possible to determine the substantial continuation of cooking after the heating is restarted, and depending on whether or not to use data collected before the heating was stopped according to the determination result, Thus, it is possible to perform appropriate heating control according to the conditions.

[0011]

1 to 4 show an embodiment of the present invention. In the present embodiment, the following description will be given of a case where the heating cooker is a gas table stove. In this heating cooker, as shown in FIG. 1, gas is supplied to a burner 1 as a heating means via a main plug 3 and a gas supply control unit 4 as a heating control means, and the cooked food is burned by the burner 1. The cooked container 2 (hereinafter, a case of a pot) is heated and cooked. Although not shown in FIG. 1, an ignition knob for performing ignition, fire extinguishing and thermal power adjustment is provided so that the thermal power adjustment can be performed manually.

In the case of this heating cooker, the degree of heat can be automatically adjusted according to cooking such as boiling, frying (including frying with oil) or baking, and various modes such as the above-mentioned boiled mode, oil mode and grilled mode can be performed. The setting of the cooking mode is performed by the mode setting unit 8. The mode setting section 8 includes a mode changeover switch for switching a cooking mode, a setting section for setting a temperature setting, a heating time, and the like, and a setting value or a current value of which setting mode or which cooking mode is being operated. A display unit for displaying information is integrally provided.

The combustion control of the burner 1 according to the cooking mode set by the mode setting unit 8 may be performed by a signal processing unit 6 composed of a microcomputer as a judging means and an electromagnetic valve (or a proportional control valve or the like). ) Is performed with the gas supply control unit 4 configured as described above. In addition, the signal processing unit 6 determines the heating state of the food that matches the cooking mode set by the mode setting unit 8 according to the heating temperature of the food.
Here, since it is difficult to directly detect the temperature of the food, a method of estimating the temperature of the food 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. I have. That is, the signal processing unit 6 samples the output of the temperature sensor 5 to determine the heating state of the food that matches the cooking mode set by the mode setting unit 8, and according to the determination result, the gas supply control unit By controlling the burner 4, the combustion state of the burner 1 is automatically adjusted to a predetermined state, or the fire is automatically extinguished in a specific situation to control the heating of the food.

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 becomes a temperature determined to be scorched, the gas supply control unit 4 stops gas supply and automatically extinguishes the burner 1. Prevent scorching. 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 for boiling. When the time is set in this manner, the fire is automatically extinguished after the set time has elapsed. 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, when the temperature rises to a temperature determined to be abnormal for some reason, automatic fire extinguishing is performed. 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.

Further, this cooking device is provided with a water heating mode which is convenient for boiling water, detects the boiling state of the water from the output of the temperature sensor 5, notifies the buzzer or the like, and automatically extinguishes the fire. It has a function to perform. 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 5 also becomes substantially constant.

Further, as a function commonly provided in all the above-mentioned cooking modes, a function is provided for automatically turning off the fire when a timer set to prevent extinguishing is activated at the same time as the ignition, and when a time set in the timer elapses. ing. Less than,
A description will be given of a heating control method when re-ignition is performed after a fire is extinguished, which is a feature of the present embodiment. In the heating cooker of the present embodiment,
As in the prior art, once the burner 1 has been extinguished, the data collected before the extinguishing is not initialized, and the data is used as data after reignition depending on the situation.

For this reason, in the present embodiment, the signal processor 6 reads the temperature detected by the temperature sensor 5 even after the burner 1 is once extinguished, and determines whether cooking is substantially continued. I do. For example, as shown in FIG. 4 (a), when the pot 2 is left on the gorge 7 without being picked up and then re-ignited, it is considered that cooking is substantially continued. Good. However, it goes without saying that the case where the temperature of the cooked food has been remarkably lowered due to the long standing state being continued for a long time is excluded.

Therefore, in this embodiment, for example, it is determined whether cooking is substantially continued as follows. This case will be described in the case of the boiling mode. In the boiled food mode, the boiling state of the food is detected, and the temperature at which the combustion of the burner 1 is automatically stopped is determined based on the detected boiling temperature to prevent burning. Therefore, the cooking of whether it is substantially continuously determined, as shown in FIG. 3, the temperature detected by the temperature sensor 5 has dropped to the detection start temperature T ₁ of less that detects the boiling of the food Whether to do.

[0020] Then, not reduced to a sensed temperature, as shown in (a) of FIG. 3 is detection start temperature T ₁ of less, when it is determined that substantially cooking is continued, the signal processing unit 6, before extinguishing The combustion control of the burner 1 after re-ignition is performed using the data of the burner 1 as it is. However, when it is preferable to correct the fire extinguishing temperature for preventing burning by judging from the output of the temperature sensor 5 collected after the re-ignition, the data before the fire extinguishing may be corrected.

Conversely, as shown in FIG. 3B, when the detected temperature drops below the detection start temperature T ₁ and it is determined that cooking is substantially interrupted, the data before fire extinguishing is initialized, Data for combustion control suitable for the cooking mode is newly collected according to the output of the temperature sensor 5. And
Subsequent combustion control of the burner 1 is performed based on this data.

There are also cases where it is necessary to determine that cooking has been substantially interrupted as follows. For example, this corresponds to a case where the food cooked in another heating cooker or the like is replaced and cooked after the fire is extinguished, or a case where the pot 2 is shaken to mix the food after the fire is extinguished. In such a case, the temperature detected by the temperature sensor 5 as described above is the detection start temperature T for detecting the boiling state of the food.
Does not drop below ₁ . For this reason, it may not be sufficient to judge whether or not the above-described cooking is substantially continued. In other words, when the food cooked in another heating cooker or the like as described above is cooked by exchanging after the fire is extinguished, or in the case of shaking the pot 2 after the fire is extinguished, even if the food is mixed, Even if they are the same, it is appropriate to think that the food is different from the one before the fire extinguishing, and it is preferable to newly switch to the combustion control adapted to the cooking mode.

When observing the temperature around the burner 1 for a certain time immediately after the fire extinguishing, the surrounding temperature is high in order to keep the burner 1 heated. Now, as shown in FIG. 4 (b), assuming that the pan 2 is lifted from the top of the virtue 7, the temperature detected by the temperature sensor 5 due to the air blown by lifting the pan 2 at this time is shown in FIG. It rises momentarily as shown.

Focusing on this point, in the present embodiment, the above-described replacement of the food is determined by detecting the instantaneous temperature rise. As this specific method, the temperature detected by the temperature sensor 5 is not reduced to the detection start temperature T ₁ of less that detects the boiling of the food, and the predetermined temperature T ₂ higher temperature rise for a predetermined time t ₁ If it occurs within, it is determined that the pot 2 has been taken up. In this case, the signal processing unit 6 determines that the cooking has been substantially interrupted, initializes the data before fire extinguishing, and newly performs the combustion control adapted to the cooking mode according to the output of the temperature sensor 5. And the subsequent combustion control of the burner 1 is performed based on this data. FIG. 2 is a flowchart showing the above operation.

As described above, the signal processing unit 6 can determine the actual continuation of cooking after the fire has been once extinguished and re-ignited, and according to the result of the judgment, the data collected before the fire was extinguished. By determining whether or not to use the burner, appropriate combustion control of the burner 1 according to the situation can be performed. In other words, even when cooking is substantially continued, by updating the data before fire extinguishing unnecessarily, an error occurs in the data before extinguishing and after re-ignition, making it impossible to properly cook the food. Problem can be reduced.

In the above description, the case of the boiled food mode has been described as an example. However, it is needless to say that the present invention can be applied to other cooking modes such as an oily food mode.

[0027]

As described above, according to the present invention, the judging means reads the temperature detected by the temperature detecting means even after the heating of the food by the heating means is temporarily stopped, and at the time when the heating is restarted. It is determined whether or not cooking is substantially continued, and when it is determined that cooking is substantially continued, heating control of the food is performed using the data collected before the stop of heating as it is, When it is determined that cooking has been substantially interrupted, the data before heating is stopped is initialized to collect data for heating control of new food, so heating is temporarily stopped, It is possible to determine the substantial continuation state of cooking after the heating is started again, and it is possible to perform appropriate heating control according to the situation by using data collected before stopping heating according to the determination result. .

[Brief description of the drawings]

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

FIG. 2 is a flowchart showing a main operation of the embodiment.

FIG. 3 is an explanatory diagram of temperature characteristics after a fire is extinguished.

FIG. 4 is an explanatory diagram of a principle of causing a temperature rise when a pot is taken out after extinguishing a fire.

[Explanation of symbols]

 Reference Signs List 1 burner 2 pan 4 gas supply control unit 5 temperature sensor 6 signal processing unit 8 mode setting unit

 ──────────────────────────────────────────────────続 き 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 Inside the company Harman (72) Inventor Tomoko Tanaka 1-15-1 Oka, Minami-shi, Minato-ku, Osaka-shi Inside the company Herman (72) Inventor Yukiko Tani 1-1-52, Minami-shioka, Minato-ku, Osaka-shi Within the company Herman (72) Inventor Eriko Aoki 1-1-52, Oka, Minami-shi, Minato-ku, Osaka City

Claims (1)

(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 cooking modes such as, and the like; determining means for sampling the output of the temperature detecting means to determine the heating state of the food which matches the cooking mode set by the mode setting means; Heating control means for controlling the heating means for automatically adjusting the heating state of the heating means to a predetermined state under control of the heating means or automatically stopping the heating state in a specific situation. In the apparatus, the determination means reads the temperature detected by the temperature detection means even after the heating of the food by the heating means is once stopped, and the cooking is substantially continued when the heating is resumed. If it is determined that cooking is substantially continued, the heating of the food is controlled using the data collected before the heating was stopped, and the cooking was substantially interrupted. If it is determined, the heating cooker is characterized by initializing the data before the stop of heating and collecting data for heating control of a new cooking product.