JP2664565B2 - 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]

However, in general, even if it is boiled, the cooked food is often fried in the early stage of cooking (so-called stir-fry). It is necessary to temporarily set the cooking mode to the oil mode and then switch to the boiled mode at the stage of cooking the food thereafter. In other words, if the stir fry is kept in the boiled dish mode, the temperature for performing automatic fire extinguishing in the boiled dish mode is set low, so that the fire is extinguished during the stir fry. Therefore, the operation is troublesome for the user. In addition, when such switching is required, it is often forgotten to switch the oil mode to the boiled mode, and the stew is boiled in the oil mode, causing the boiled food to be scorched.

[0006] The present invention has been made in view of the above points, and it is an object of the present invention to provide a heating cooker which can stir a cooked food in an early stage of cooking while maintaining a boiled food mode. 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. Heating control means for automatically adjusting the state to a predetermined state, and automatically stopping the heating state in a specific situation, and controlling the temperature rise rate of the output of the temperature detecting means near the boiling of water in the boiling mode. A temperature rise rate detection unit to be detected, and an upper limit for setting a higher temperature limit to be set as a temperature at which fire extinguishing is required in the boiling mode when the temperature rise rate is equal to or higher than a predetermined rate. And a degree control unit is provided to the heating control means.

In order to reliably detect the stir-fry, the temperature rise rate detection unit detects the temperature rise rate of the output of the temperature detection means before and after the water boils,
It is preferable that the upper limit temperature controller raises the upper limit temperature by shifting the boiling mode to the oil mode for a certain period of time when the respective temperature rise rates are equal to or higher than predetermined preset rise rates.

[0009]

[Effect] There is a difference in the temperature rising tendency near the boiling point of water between the case of cooking and the case of cooking. Accordingly, in the present invention, as described above, a temperature rise rate detection unit that detects the temperature rise rate of the output of the temperature detection means near the boiling of water in the boiling mode, and the temperature rise rate is equal to or higher than a predetermined predetermined rise rate. In the case of boiled food mode, an upper limit temperature control unit that sets the upper limit temperature set as a temperature that requires fire extinguishing to be high is provided in the heating control means, and the cooked food can be automatically fried for a fixed time in the cooked food mode. So that it can be cooked and cooked with fried food as before,
There is no need to switch between the oil mode and the boiled mode. There is no need for operation, and the user forgets to switch the oil mode to the boiled mode. It is designed so that it will not be attached.

[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 5 also becomes substantially constant.

Further, as a function commonly provided in all the above-mentioned modes, a function is provided in which a timer for preventing turning off is activated at the same time as ignition, and a fire is automatically extinguished when a time set in the timer elapses or more. I have. by the way,
As described above, so-called stir-fry may be performed in which the food 3 is fried in the early stage of cooking even though it is boiled. here,
If you are stir-fried, use a temperature sensor 5 to use oil.
The temperature detected at rises sharply. On the other hand, in the case of boiled water, water is boiled.
₂ ) Since the temperature does not rise more than the above, the temperature detected by the temperature sensor 5 at the time of boiling also maintains a constant temperature. That is,
If such a temperature change can be identified, it is possible to automatically set the oil mode for a fixed period of time at the beginning of cooking in the boiled food mode and to stir-fry without switching the mode.

Therefore, in this embodiment, the signal processing section 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, a temperature rise rate detector 62 that detects a rise rate of the temperature detected by the temperature sensor 5, A data storage unit 64 for storing data such as temperature for automatic fire extinguishing, and a temperature rise rate before and after water boiling is determined, and each temperature rise rate is equal to or higher than a predetermined rise rate set in advance. In this case, a correction unit 63 that corrects the automatic fire extinguishing temperature of the boiled food mode stored in the data storage unit 64 by a fixed time,
The correction unit 63 includes a correction data storage unit 65 that stores correction data for automatic fire extinguishing obtained by the correction unit 63, and a control unit 66 that controls the driving unit 7 according to the correction data. That is, in the present embodiment, the upper limit temperature control unit includes the correction unit 63, the correction data storage unit 65, and the control unit 66. The correction unit 63 reads out data (temperature data for automatic fire extinguishing in this embodiment) as appropriate according to the setting of the mode setting unit 8 from the data storage unit 64 to perform correction, and performs automatic fire extinguishing in the cooking mode. As a method of correcting the temperature to be higher by a certain time, the automatic extinguishing temperature in the oil mode is used as correction data. 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.

The operation of the main part of this embodiment will be described below with reference to the flowchart of FIG. In this embodiment, the temperature sensor 5 before and after the water boils in order to detect that the food 3 is fried in the early stage of cooking when cooking the food.
The temperature rise rate of the output is detected. Here, the temperature sensor 5
Output changes depending on the type of the container, the type of the food 3, etc., and an appropriate temperature region is set in consideration of the output. For example, the portion before the temperature boils detects a temperature increase rate of T ₁ through T _2, part of the latter may be to sense the temperature increase rate in the T ₂ through T _3. Then, the times t ₁ and T ₂ required for T _{1 to} T ₂ in order to detect the rising rate
For counting by using the time t ₂ required for ₂ ~T ₂ each timer.

[0019] Now, when the temperature of the pan bottom from the output of the temperature sensor 5 becomes T ₁ is sensed to initiate the counting operation of the timer from this point, the timed time of the timer when it becomes T ₂ to determine whether this is less than the predetermined time t _1,
Food 3 in the boiled mode if it is less than the predetermined time t ₁
Is judged to be fried. Here, this fixed time may be obtained experimentally.

In this case, it may be acceptable to judge that the food 3 is immediately fried. However, as described above, the output of the temperature sensor 5 may vary depending on the type of the container or the type of the food 3. Therefore, it is preferable to detect the temperature rise rate even at a temperature higher than the boiling temperature of water as follows. That is, when it is detected from the output of the temperature sensor 5 that the temperature at the bottom of the pot has reached T ₂ , the timer operation of the timer is started from this point, and when the temperature reaches T ₃ , the timer time of the timer becomes a predetermined 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, the predetermined time may be obtained experimentally.

[0021] If it is determined that the fried this way food 3, as shown in FIG. 4, is shifted by the oil is also a mode predetermined time t ₃ the boiled mode. In other words, in the oil mode, the temperature at which the automatic fire extinguishing is higher than in the boiled mode, so that the frying cooking can be continued in this case. In addition, the time may be appropriately set according to the actual situation of the stir-fry. Further, a method of not only switching to the oil mode but also simply increasing the non-sticking temperature in the boiled food mode may be adopted.

In this way, the cooked food 3 can be fried in the early stage of cooking while maintaining the boiled food mode.
In the case of boiled food with frying cooking as in the past, there is no need to switch between oil mode and boiled mode, so there is no trouble of operation, and forget to switch oil mode to boiled mode, There is no need to boil the stewed food in the oily mode.

[0023]

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
A heating control means for automatically stopping a heating state in a specific situation, a temperature rising rate detecting unit for detecting a temperature rising rate of an output of a temperature detecting means near a boiling point of water in the boiling mode, and a temperature rising rate. and a upper limit temperature controller for higher maximum temperature set as a temperature that requires extinguishing in boiled mode when it is more than the predetermined increase rate is set in advance are those digits set in the heating control means, water Boil
When you select the boiled food mode, it is like a so-called stir fry
Boiled with cooking, fry the ingredients first with oil
If you are stir-fried ingredients,
Stir-fry cooking by raising the maximum temperature of the fire
If the heating means extinguishes automatically during the operation
This has the effect of avoiding such inconvenience. That is,
Boiled and oily modes by mode setting means
In the selection, leave the boiled food mode selected
This has the effect that stir-fry becomes possible. Also on temperature
Temperature detection before and after boiling water in the rate-of-rise detector
The temperature rise rate of the output of the means is detected, and each temperature rise rate is upper limit
If the rate of increase is equal to or higher than a predetermined rise rate set in
At the same time, the cooking mode is switched to the oil mode for a certain period of time.
Was intended to set a higher upper limit temperature is, able to fry only food predetermined time in boiled mode, even boiled with Mel cooking parched, once the oil as in the conventional configuration
Operation to switch to boiling mode after setting to mono mode
There is an advantage that no operation is required, the operation is not troublesome, and the oil mode is forgotten to be switched to the boiled mode .

[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 specific configuration of a signal processing unit according to the embodiment.

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

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

[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

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Makiko Nagano 4-1-2, Hirano-cho, Chuo-ku, Osaka City Inside Osaka Gas Co., Ltd. (72) Masao Uehara 1-1-52, Oka, Minami-shi, Minato-ku, Osaka-shi Inside the company Harman (72) Inventor Yutaka Yoshida 1-152 Oka, Minami-shi, Minato-ku, Osaka-shi Inside the company Herman (72) Insider Tomoko Tanaka 1-152 Oka, Minami-shi, Minato-ku, Osaka-shi Inside the company Herman (72) Inventor Eriko Aoki 1-52-1, Oka, Minami-shi, Minato-ku, Osaka-shi Harman Co., Ltd. (56) References JP-A-4-62315 (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 rising rate detecting unit for detecting a temperature rising rate of an output of the temperature detecting means near a boiling point of water in the boiling mode, and a temperature rising rate set in advance. An upper limit temperature control unit that sets a higher upper limit temperature that is set as a temperature that requires fire extinguishing in the boiled food mode when the heating rate is equal to or higher than a predetermined rising rate. Heating cooker. 2. The temperature rise rate detection section detects a temperature rise rate of an output of a temperature detection means before and after water boils,
The upper limit temperature control section raises the upper limit temperature by shifting the boiling mode to the oil mode for a certain period of time when each temperature rise rate is equal to or higher than a predetermined rise rate set in advance. The cooking device according to claim 1, wherein