JPH0552332A - Heating and cooking device - Google Patents

Abstract

PURPOSE:To enable a cooked item to be fired at the beginning of cooking operation while a boiling mode is being set. CONSTITUTION:A temperature sensor 5 is contacted with a bottom part of a pot to detect the temperature of it. Various cooking modes are set by a mode setting part 8. A signal processing part 6 controls the opening/closing of a solenoid valve 4 through a driving part 7 according to a mode set at the mode setting part 8 and an output from the temperature sensor 5 and automatically adjusts a heating state of a burner 1 to a predetermined state. Then, the signal processing part 6 stops the heating state automatically under a specified condition. The signal processing part 6 is provided with a temperature increasing rate sensing part and an upper limit temperature control part. The temperature increasing rate of the output of the temperature sensor 5 near water boiling temperature under a boiling mode is detected at the temperature increasing rate sensing part. In the case where the temperature increasing rate is mode than a predetermined increasing rate set in advance at the upper limit temperature control part, the upper limit temperature set as a temperature requiring fire diminishing under a boiling mode is set high.

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 boiling, frying and baking cooked foods, and a function of automatically stopping the heating state in a specific situation. The present invention relates to a cooking device provided.

[0002]

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

In this type of heating cooker, for example, if the cooking device is set to a mode for boiling food (hereinafter, this mode is referred to as a cooking mode), the temperature detected by the temperature sensor becomes the temperature at which it is determined to be charring. When it becomes low, you can automatically extinguish the burner to prevent the food from burning. In addition, if you set the mode for frying or frying the cooked food (hereinafter, this mode is referred to as oil mode), when the oil temperature is kept constant or the oil temperature becomes abnormally high. The fire can be extinguished automatically.

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

[0005]

However, even if it is generally said to be boiled, the food is often fried at the beginning of cooking (so-called fried boiled), and if it is such boiled, it is first fried. First, it is necessary to switch the cooking mode to the oil mode and then switch to the boiling mode at the subsequent cooking step. In other words, when frying in the stewed food mode, the temperature for automatic extinguishing is set low in the stewed food mode, so the fire is extinguished during frying. Therefore, the operation is troublesome for the user. Moreover, when such a switching is required, it is often forgotten to switch the oil-making mode to the boiling one, and the oil is still cooked in the oil-making mode, so that the stewed food is charred.

The present invention has been made in view of the above points, and an object of the present invention is to provide a heating cooker capable of frying a cooked product in the initial cooking stage in the boiling mode. It is in.

[0007]

In the present invention, in order to achieve the above object, a heating means for heating a cooking product and a temperature for detecting the temperature by contacting the bottom of a container in which the cooking product is heated are heated. Temperature detecting means such as a sensor, mode setting means for setting various modes such as cooking, frying, and baking food, and heating of the heating means according to the mode set by the mode setting means and the output of the temperature detecting means. Along with automatically adjusting the state to a predetermined state, with a heating control means for automatically stopping the heating state in a specific situation, the temperature rise rate of the output of the temperature detection means in the vicinity of boiling water in the boiling mode A temperature rise rate detection unit to detect, and an upper limit to set a higher upper limit temperature set as a temperature that requires extinguishing in the boiling mode when the temperature rise rate is equal to or higher than a preset predetermined increase rate And a degree control unit is provided to the heating control means.

When it is possible to detect the stir-fried food with certainty, the temperature rise rate detecting unit detects the temperature rise rate of the output of the temperature detecting means before and after the boiling of water,
It is preferable that the upper limit temperature control unit shifts the boiling mode to the oil mode for a certain period of time to raise the upper limit temperature when the respective temperature rising rates are equal to or higher than the predetermined rising rates set in advance.

[0009]

[Function] There is a difference in the temperature rising tendency in the vicinity of boiling water when the cooked food is fried and when cooked. Therefore, in the present invention, as described above, the temperature rise rate detection unit that detects the temperature rise rate of the output of the temperature detection means in the vicinity of boiling water in the boiling mode, and the temperature rise rate is equal to or higher than a preset predetermined rise rate. If the heating control means is provided with an upper limit temperature control unit that sets a higher upper limit temperature set as a temperature that requires extinguishing fire in the stewed food mode, the cooked food can be automatically fried for a certain period of time in the stewed food mode. In the case of boiled food that involves cooking and fry as before,
There is no need to perform the switching operation between the oil-like mode and the stewed mode, there is no troublesome operation, and forgetting to switch the oil-like mode to the stewed mode, simmering the oil-like mode as it is and burning the stewed thing It was designed so that it would not be attached.

[0010]

FIG. 1 shows an example of a heating cooker to which the present invention is applied. This heating cooker is a gas table stove, and the gas supplied through a solenoid 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) containing a food 3 is burned. A case will be described) 2 is heated and cooked. Although not shown in FIG. 1, an ignition knob for performing ignition, fire extinguishing, and heat power adjustment is provided, and the heat power can be manually adjusted.

Further, in the case of this heating cooker, the degree of heating can be automatically adjusted according to cooking such as boiling, frying (including frying with oil) or baking, and the above cooking mode, oil mode and baking mode etc. The mode setting unit 8 performs various kinds of mode setting. The mode setting section 8 includes a setting section for setting a temperature setting, a heating time, etc., in addition to a mode selection switch for switching the mode.
Further, it is integrally provided with a display section for displaying the set value or the current value and the mode in which the operation is performed.

Combustion control of the burner 1 according to these modes is performed by a signal processing unit 6 composed of a microcomputer. The signal processing unit 6 stores a processing program according to each mode, and the driving unit 7 according to the temperature of the cooked food 3 is stored.
The open state of the solenoid valve 4 is controlled via the to control the combustion state of the burner 1. That is, in the case of the present embodiment, the signal processing section 6, the driving section 7 and the solenoid valve 4 constitute a heating control means.

By the way, in this kind of heating cooker, the temperature of the cooked food 3 cannot be directly detected,
A temperature sensor 5 such as a thermistor serving as a temperature detecting means that comes into contact with the bottom of the pan 2 is used to adopt a method of analogizing the temperature of the cooked food 3. 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 it is charring, the solenoid valve 4 is closed to automatically extinguish the burner 1 to prevent charring. At this time, at the same time, the user is informed of the burning by a notification means such as a buzzer. In this boiling mode, the user can set the boiling time, and when the time is set in this way, the fire is extinguished automatically after the set time has elapsed. However, even before the elapse of the set time, when the burning is detected, the fire is extinguished automatically.

Next, in the oil mode, the combustion amount (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. The upper limit temperature can be set to a desired temperature by the user according to cooking. Also in this oil mode, even when frying or stir-frying, if the temperature rises to an abnormal value due to some factor, automatic fire extinguishing is performed.

In the burning 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 grilling mode is adjusted to be higher than that in the oil burning mode. Also at this time, if the temperature rises above the upper limit temperature, the fire is automatically extinguished. Furthermore, this heating cooker has a boiling water mode that is convenient for boiling water, detects the boiling state of the hot water from the output of the temperature sensor 5, notifies it with a 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 it is boiled and the output of the temperature sensor 5 becomes substantially constant.

Furthermore, as a function common to all of the above-mentioned modes, a forget-to-turn-off prevention timer operates at the same time as ignition, and a function of automatically extinguishing the fire when a time set in the timer elapses or more is provided. There is. by the way,
As mentioned above, there is a case in which so-called simmering of the cooked food 3 is performed at the beginning of cooking, even if it is said to be boiled. here,
If you are stir-fried, you will need to use the temperature sensor 5
The temperature detected at will rise rapidly. On the other hand, boiling water causes water to boil, so water has a certain temperature (T
₂ ) Since the temperature does not rise above the above, the temperature detected by the temperature sensor 5 during boiling also remains constant. That is,
If such a temperature change can be identified, it is possible to automatically stir the oil in the oil cooking mode for a certain period at the beginning of cooking in the cooking cooking mode and to fry and cook without switching the mode.

Therefore, in this embodiment, the signal processing unit 6 has the following configuration. That is, as shown in FIG. 2, an A / D conversion unit 61 that converts the output of the temperature sensor 5 into digital data, a temperature increase rate detection unit 62 that detects an increase rate of the temperature detected by the temperature sensor 5, A data storage unit 64 that stores data such as temperature for automatic fire extinguishing and a temperature increase rate before and after boiling water are discriminated, and each temperature increase rate is equal to or higher than a preset predetermined increase rate. In this case, a correction unit 63 that corrects the automatic fire extinguishing temperature in the boiling mode stored in the data storage unit 64 for a certain period of time,
The correction data storage unit 65 stores the correction data for automatic fire extinguishing obtained by the correction unit 63, and the control unit 66 that controls the drive unit 7 according to the correction data. That is, in this embodiment, the upper limit temperature control unit is composed of the correction unit 63, the correction data storage unit 65, and the control unit 66. In addition, the correction unit 63 reads data (temperature data for automatic fire extinguishing in this embodiment) from the data storage unit 64 as appropriate according to the setting of the mode setting unit 8 and corrects the data, thereby automatically extinguishing the cooking mode. As a method of correcting the temperature higher for a certain period of time, the automatic fire extinguishing temperature in the oil mode is used as the correction data. Further, in the case of the present embodiment, the above-mentioned respective parts are configured as software, but they may be configured as hardware by a discrete circuit.

The operation of the main part of this embodiment will be described below with reference to the flowchart of FIG. In the present embodiment, the temperature sensor 5 before and after the boiling of water is detected in order to detect that the cooked food 3 is being fried in the early stage of cooking when performing boiling.
The temperature rise rate of the output of is detected. Here, the temperature sensor 5
Output changes depending on the type of container, the type of food 3, and the like, so an appropriate temperature range is set in consideration of this. For example, the temperature rise rate in T _{1 to} T ₂ may be detected in the portion before the temperature boils, and the temperature rise rate in T _{2 to} T ₃ may be detected in the latter portion. Then, in order to detect the rate of increase, the time t ₁ and T ₁ required for T _{1 to} T _2
The time t ₂ required for _{2 to} T ₂ is measured using a timer.

Now, when it is detected from the output of the temperature sensor 5 that the temperature of the bottom of the pan has reached T ₁ , the time counting operation of the timer is started from this point, and at the point when it reaches T ₂ , the time measured by the timer is counted. Judge whether it is less than a certain time t ₁ ,
Cooking 3 in the stewed mode when the time is less than a certain time t _1.
Judge that you are fried. Here, this fixed time may be experimentally obtained.

In this case, it may be acceptable to immediately determine that the cooked food 3 is being fried, but as described above, there is an error in the output of the temperature sensor 5 depending on the type of container and the type of cooked food 3. Therefore, it is preferable to detect the temperature rise rate even at the boiling temperature of water or higher as follows. That is, when the temperature of the pan bottom from the output of the temperature sensor 5 becomes T ₂ is detected, then starts counting operation of the timer from the point counting time of the timer when it becomes T ₃ is a certain time t determine whether less than _2, it is determined that the fried food 3 in boiled mode is less than a predetermined time t _2. Here, this fixed time may be experimentally obtained.

When it is determined that the cooked food 3 is fried in this way, as shown in FIG. 4, the cooking mode is shifted to the oil mode for a fixed time t ₃ . In other words, the oil-fired mode has a higher temperature at which automatic fire extinguishing is performed than in the boiled-mode, so that the frying cooking can be continued at this time. It should be noted that the time may be appropriately set depending on the actual condition of the stir-fry. In addition, not only switching to the oil mode, but a method of simply increasing the non-sticking temperature in the boiling mode may be adopted.

In this way, the cooked product 3 can be fried at the beginning of cooking in the boiling mode.
In the case of simmered food that involves frying as in the past, there is no need to switch between the oil-based mode and the simmered mode, so there is no need for troublesome operation, and forget to switch the oil-based mode to the simmered mode. There is no need to burn the stewed food in the oily mode.

[0023]

As described above, the present invention includes a heating means for heating a cooked food, and a temperature detecting means such as a temperature sensor for detecting the temperature by contacting the bottom of a container in which the cooked food is heated. A mode setting means for setting various modes such as simmering, frying, and baking cooked food, and the heating state of the heating means is automatically set to a predetermined state according to the mode set by this mode setting means and the output of the temperature detecting means. Adjust to
A heating control unit that automatically stops the heating state in a specific situation, and a temperature rise rate detection unit that detects the temperature rise rate of the output of the temperature detection unit in the vicinity of boiling water in the boiling mode, and the temperature rise rate is Since the heating control means is provided with an upper limit temperature control unit that sets a higher upper limit temperature set as a temperature that requires extinguishing in the boiling mode when it is above a predetermined rise rate set in advance, In the boiled food mode, the cooked food can be fried for a certain period of time. Therefore, in the case of the conventional simmered food that involves frying, there is no need to switch between the oily food mode and the boiled food mode, and the operation is troublesome. There is no need to forget to switch the oily food mode to the cooked food mode and stew the oily food in the oily food mode without burning the cooked food.

[Brief description of drawings]

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

FIG. 2 is a block diagram showing a specific configuration of a signal processing unit of the above.

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

FIG. 4 is an explanatory diagram of an operation of the above.

[Explanation of symbols]

 1 Burner 2 Pan 3 Cooking Product 4 Proportional Control Valve 5 Temperature Sensor 6 Signal Processing Section 7 Drive Section 8 Mode Setting Section 62 Temperature Rise Rate Detection Section 63 Correction Section 64 Data Storage Section 65 Correction Data Storage Section 66 Control Section

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Machiko Nagano 4-1-2, Hirano-cho, Chuo-ku, Osaka City Osaka Gas Co., Ltd. (72) Masao Uehara 1-1-52, Minami-shi, Minato-ku, Osaka Harman Co., Ltd. (72) Inventor Yutaka Yoshida 1-152 Minami-shi Oka, Minato-ku, Osaka City Harman Co., Ltd. (72) Inventor Tomoko Tanaka 1-1-52 Minami-shi Oka, Minato City, Osaka City Harman Co., Ltd. (72 ) Inventor Eriko Aoki 1-52-1 Oka Minami-shi Minato-ku Osaka City Harman Co., Ltd.

Claims (2)

[Claims] 1. A heating means for heating a cooked food, a temperature detecting means such as a temperature sensor for detecting the temperature by putting the cooked food in contact with the bottom of a container to be heated, and cooking, frying, or baking the cooked food. Mode setting means for setting various modes such as, and the heating state of the heating means is automatically adjusted to a predetermined state in accordance with the mode set by the mode setting means and the output of the temperature detecting means. A heating control means for automatically stopping the heating state, and a temperature rise rate detection unit for detecting the temperature rise rate of the output of the temperature detection means in the vicinity of boiling water in the boiling mode, and the temperature rise rate is preset. The heating control means is provided with an upper limit temperature control unit that sets a higher upper limit temperature set as a temperature that requires extinguishing in the boiling mode when the rate of increase is equal to or higher than a certain predetermined rate. Cooker to cook. 2. The temperature rise rate detecting section detects the temperature rise rate of the output of the temperature detecting means before and after the boiling of water,
The upper limit temperature control unit is configured to increase the upper limit temperature by shifting the cooking mode to the oil mode for a certain period of time when each temperature increase rate is equal to or higher than a preset predetermined rate. The cooking device according to claim 1.