JP2665119B2 - 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 cooking stove such as a gas stove, an electric stove, an oven, etc., and more particularly to a safety device for the cooking stove.

[0002]

2. Description of the Related Art Conventionally, as a safety device for a heating cooker of this kind, for example, a safety device disclosed in Japanese Patent Publication No. 4-50489 is known.

[0003] This safety device measures the time from the start of heating of the cooked food, and even if the measured time reaches a predetermined time, if the heating source is not stopped, the safety source is automatically turned off. In this case, the heating operation is stopped.

[0004] However, such a safety device has the following inconvenience because the timer time from the start of heating of the food to the stop of the heating source is fixed at a predetermined value.

[0005] That is, for example, when comparing oils and boiled foods as cooking products, cooking time is generally longer for boiled foods and cooking temperature is higher for oiled foods.

For this reason, for example, if the timer time is set to a relatively long time so that the heating source does not stop during the cooking of the boiled food, the user may be erroneous when cooking the oily food. In such a case, the oily substance is left cooking for a long time while being cooked at a high temperature, and there is a problem that extreme burning may occur.

If the timer time is set to a relatively short time in order to prevent such an adverse effect, the heating source may stop during the cooking of the stew. However, there is a disadvantage that the user has to operate the heating source again.

[0008]

SUMMARY OF THE INVENTION The present invention solves such a disadvantage, and when the heating source is left operating, the heating source can be stopped at an appropriate timing according to the content of the cooking, and the safety can be improved. An object of the present invention is to provide a heating cooker excellent in properties and usability.

[0009]

In order to achieve the above object,
For example, a heating cooker according to the present invention includes a heating cooker provided with a heating source for heating the food, a temperature setting means for setting a cooking temperature of the food, and a temperature for detecting a cooking temperature of the food. Detecting means; controlling means for controlling the heating operation of the heating source so that the cooking temperature detected by the temperature detecting means substantially matches the cooking temperature set by the temperature setting means; and Stop means for stopping the heating operation of the heating source when a predetermined time set according to the cooking temperature set by the setting means has passed,
Alarming means for issuing an alarm at a predetermined time within the predetermined time, wherein the predetermined time is set to a shorter time as the cooking temperature set by the temperature setting means is higher.

[0010] Then, after the alarm generation by pre Symbol alarm means comprises an extension instruction means for instructing the extension of the heating operation of said heating source relative to said stop means by a predetermined operation, said stop means the extension instruction means When the extension instruction is received, the stop of the heating operation of the heating source is released to extend the heating operation of the heating source.

[0011]

According to the heating cooker of the present invention, when heating cooking is started, the control means controls the cooking temperature detected by the temperature detecting means so as to substantially match the cooking temperature set by the temperature setting means. The heating operation of the heating source is controlled, and at this time, the heating operation of the heating source is automatically performed by the stopping unit when a predetermined time according to the cooking temperature set by the temperature setting unit has elapsed from the start of cooking. Stopped. The predetermined time is set to a shorter time as the set cooking temperature is higher. Therefore, in high-temperature cooking such as oil cooking, the heating source is stopped in a relatively short time. In low-temperature cooking, the time until the heating source stops is long. Further, an alarm is issued by the alarm generating means at a predetermined time within the predetermined time, whereby the user is notified that the heating source will be automatically stopped soon.

[0012] In the cooking device , when the extension instructing means is provided, when a predetermined operation is performed by the extension instructing means after the alarm is issued by the alarm generating means, the stop means is provided with a heating operation of the heating source. Is stopped and the heating operation is extended, so that the user can continue heating cooking as desired.

[0013]

An example of a heating cooker of the embodiment of the present invention will be described with reference to FIGS. 1 is a system configuration diagram of the cooking device of the present embodiment, FIG. 2 is a block configuration diagram of a main part of the cooking device, and FIGS. 3 and 4 are flowcharts for explaining the operation of the cooking device. 5 is an explanatory diagram of the operation timing of the cooking device.

In FIG. 1, the cooking device of the present embodiment comprises:
The cooker includes a stove burner 1 that is a heating source for cooked food, and a controller 2 that controls the operation of the stove burner 1. Gas is supplied to the burner 1 from a gas supply pipe 3. . The gas supply pipe 3 is provided with an electromagnetic valve 4 controlled to be opened and closed by the controller 2, and further provided with a flow rate control valve (not shown) for adjusting the amount of gas supplied to the burner 1. The flow control valve is
It operates in conjunction with the operation of a gas amount adjusting operator (not shown). The gas supply pipe 3 has an electromagnetic valve 4
A branch pipe 5 is provided in parallel on the downstream side of the power supply, and a thermal power adjustment solenoid valve 6 that is appropriately opened and closed by the controller 2 is interposed in the branch pipe 5.

In the vicinity of the burner 1, an ignition electrode 8, which is energized and controlled by the controller 2 via a sparker 7, and a flame detection sensor 9 which detects ignition / misfire in the burner 1 and outputs a detection signal to the controller 2. Are provided. Further, a temperature sensor 10 for detecting the cooking temperature of the food is provided at the center of the burner 1, and this temperature sensor 10 is used when a cooking pot or the like containing the food is placed on the burner 1. The cooking temperature of the food is detected by contacting the cooking pot or the like, and a signal corresponding to the cooking temperature is output to the controller 2.

The controller 2 includes a CPU, a RAM,
It is configured by an electronic circuit including a ROM and the like,
The controller 2 is connected to the solenoid valves 4 and 6 and the temperature sensor 10 and the like, and also connected to an operation switch 11 that is linked to an ignition / extinguishing knob (not shown) for igniting / extinguishing the burner 1. . Further, the controller 2 has an extension instruction switch 12 for canceling the automatic stop of the burner 1 and instructing the extension of the heating operation, as described later.
(Extension instructing means), and a lamp 13 and a buzzer 14 for issuing an alarm under predetermined conditions described later are connected.

[0017] In FIG 1, the cooking device of this embodiment, the controller 2 for controlling the electric solenoid valve 4, 6 and the ignition electrode 8, the operation switch 11, the extension instruction switch 12, a lamp 13, a buzzer 14, a temperature sensor 10, a flame detection sensor 9 and a sparker 7 are connected, and a temperature setting operation section (temperature setting means) 27 for setting a cooking temperature is connected to the controller 2. The temperature setting operation section 27 can set a desired cooking temperature in a plurality of stages by operating a predetermined switch, for example.

As shown in FIG. 2 , the controller 2 has, as its functional components, a temperature detecting section 28 for detecting a cooking temperature via a temperature sensor 10;
8 (hereinafter referred to as detected temperature)
Unit 29 for comparing the temperature with the cooking temperature set by the temperature setting operation unit 27 (hereinafter, referred to as a set temperature), and temperature control for opening and closing the thermal power adjustment solenoid valve 6 according to the comparison result of the comparison unit 29 Unit 30, a stop time setting unit 31 for setting a "stop time" for automatically stopping the burner 1 in accordance with the set temperature, and a clock which is activated in conjunction with the start of heating and cooking of the food by the burner 1 Based on a signal from a timer 32 for outputting a signal, and signals from the operation switch 11, the flame detection sensor 9, the timer 32, and the stop time setting unit 31, the operation control of the burner 1 via the solenoid valves 4, 6 and the sparker 7 and the like. And a lamp drive unit 22 and a buzzer drive unit 23 that respectively drive the lamp 13 and the buzzer 14 according to a command from the operation control unit 33.

Here, in this embodiment , the temperature sensor 1
0 and the temperature detection unit 28 constitute a temperature detection unit 34, and the comparison unit 29, the temperature control unit 30, and the thermal power adjustment solenoid valve 6 constitute a control unit 35, and include a timer 32, an operation control unit 33, and a lamp. The driving unit 22, the buzzer driving unit 23, the lamp 13, and the buzzer 14 constitute an alarm generating unit 36, and the timer 32, the stop time setting unit 31, the operation control unit 33, and the solenoid valve 4 constitute a stopping unit 37. Things.

Next, the operation of the heating cooker according to the present embodiment will be described.

Referring to FIG. 1 and FIG. 2 , when cooking using the burner 1 in the heating cooker of this embodiment,
First, a desired cooking temperature (set temperature T _S ) is set by the temperature setting operation unit 27, and the operation switch 11 is turned on. At this time, the operation control unit 33 of the controller 2 opens the solenoid valves 4 and 6 in response to the turning on of the operation switch 11 to supply gas to the burner 1 and to operate the sparker 7.
Then, the burner 1 is ignited via the ignition electrode 8, whereby the heating and cooking is started.

At this time, the operation control unit 33 detects ignition / misfire by the flame detection sensor 9, and when the misfire is detected, closes the solenoid valve 4 and sets the buzzer drive unit 2
Sound the buzzer 14 via 3 to alert the user,
Alternatively, an alarm is issued to the user by blinking the lamp 13 via the lamp driving unit 22.

[0023] When the cooking is started, the controller 2 performs the control shown in the flowchart of FIGS.

[0024] That is, referring to FIG. 3, the operation control unit 3
3 first resets / activates the timer 32 and counts the clock signal obtained from the timer 32 to measure the elapsed time from the start of heating the food.

In parallel with this, the stop time setting unit 3
The “stop time t _T ” is set according to 1 in accordance with the set temperature T _S , and is output to the operation control unit 33. in this case,
The “stop time t _T ” is set to a shorter time as the set temperature T _S is higher. For example, when Ts <100 ° C., 2 hours, 10 hours
1 hour and a half at 0 ° C ≦ Ts <200 ° C, Ts ≧ 200
At ° C, it is set to one hour.

Next, the operation control unit 33 determines the “alarm generation time t _T ” in accordance with the “stop time t _T ” set as described above.
"Setting. Here," _K alarm time t _K ", the lamp 13 and is indicative of the time for issuing an alarm by buzzer 14, for example from the start of cooking" stop time t _T "is elapsed Time until 5 minutes before
It is set as a time obtained by subtracting 5 minutes from the “stop time t _T ”.

On the other hand, in parallel with the processing by such operation control unit 33 and the stop time setting unit 31, the cooking temperature through the temperature sensor 10 (detected temperature T _X) are sequentially detected by the temperature detector 28, the detected temperature The comparison unit 29 compares T _X with the set temperature T _S. Then, in accordance with the comparison result, the temperature control unit 30 performs the heating power control (temperature adjustment control) of the burner 1 such that the detected temperature T _X and the set temperature T _S substantially coincide with each other.

[0028] The control is carried out by treating the subroutine shown in the flowchart of FIG.

[0029] That is, the detected temperature T _X increases with the heating of the food, when the detected temperature T _X becomes higher for example 4 ° C or higher than the set temperature T _S is the temperature control unit 30,
The heating power adjustment solenoid valve 6 is closed, thereby reducing the amount of gas supplied to the burner 1 and reducing the heating power of the burner 1.
Further, the detected temperature T _X is set at 4 ° C. lower than the set temperature T _S.
When the temperature is lower than the above, the temperature control unit 30 opens the thermal power adjusting solenoid valve 6, thereby increasing the gas supply amount to the burner 1 and increasing the thermal power of the burner 1.

By this control, the detected temperature T _X , that is, the actual cooking temperature is maintained so as to substantially match the set temperature T _S.

When the above-described processing and control are continuously performed and the elapsed time from the start of heating and cooking reaches the above-mentioned “alarm generation time t _K ”, the operation control unit 33 starts the operation .
With pre-Symbol Buzzer 14 via the buzzer driver 23, to blink the lamp 13 via the lamp driving unit 22. In this case, for example, the buzzer 14 sounds intermittently every two seconds. Here, the “ alarm generation time t ”
_K alarm emitted through the buzzer 14 or the lamp 13 when the elapsed alarm time t _K "" in the beginning of heating time, for example, is set to 1 hour, food "will be described later in the burner 1 In this way, the user is notified and recognized that the vehicle will be stopped for safety soon.

In this way, the user is notified that the heating operation of the burner 1 will be automatically stopped soon. After the lapse of the “alarm generation time t _K ”, the “stop time t _T ”
If the extension instruction switch 12 is not operated before the time elapses, when the elapsed time from the start of the heating cooking reaches the “stop time t _T ”, the operation control unit 33 returns to the previous state. The buzzer 14 is stopped, and the lamp 13 is turned off.
Further, assuming that the heating operation time of the burner 1 is longer than necessary, the solenoid valve 4 which is a safety valve is closed to shut off gas supply to the burner 1, thereby automatically stopping the heating operation of the burner 1. Let it.

In this case, the “stop time t _T ” is set such that the higher the set temperature T _S , in other words, the higher the detected temperature T _X controlled to substantially match the set temperature T _S , the shorter the “stop time t _T ”. Therefore, in cooking performed at a relatively high temperature, such as oil cooking, the burner 1 is automatically stopped in a relatively short time after the start of heating cooking. Thereby, even if the user accidentally leaves the cooking at the time of high-temperature cooking, it is possible to avoid extreme burning of the food.

On the other hand, in cooking at a relatively low temperature and for a relatively long time, such as boiling cooking, the burner 1 is automatically stopped at a relatively late timing after the start of heating cooking. Because of the low temperature, it is possible to sufficiently avoid extreme scorching or the like of the cooked food.
By delaying the timing of stopping, the situation in which the burner 1 stops against the user's will during cooking can be avoided as much as possible.

Further, after generation of the alarm by the lamp 13 and the buzzer 14, until "stop time t _T" has elapsed, when said extension instruction switch 12 is operated, as shown in FIG. 3, "stop Burner 1 at time t _T ”
Is stopped, the operation is extended, the buzzer 14 is stopped, and the lamp 13 is turned off. Then, the above-described control from the start of heating and cooking is performed again.

More specifically, the extension instruction switch 12 is turned on.
After that, the “stop time t _T ” is set again according to the set temperature T _S , and the “alarm generation time t _K ” is set again according to the set “stop time t _T ”, When the “alarm generation time t _K ” has elapsed, an alarm is issued by the buzzer 14 or the lamp 13. Then, after the occurrence of the alarm, until "stop time t _T" has elapsed, the extension unless instruction switch 12 is not ON, the said burner 1 is automatically stopped upon lapse of the "stop time t _T" again When the extension instruction switch 12 is turned on again within the “stop time t _T ”, this operation is repeated.

[0037] Therefore, use for who is able to continue to continue the cooking, if necessary, also, in the case such as the user leaves the kitchen, the lapse of a "stop time t _T" Then, the burner 1 is automatically stopped for safety.

In this case, in the heating cooker of this embodiment, the user can cancel the automatic stop of the burner 1 and continue the heating operation only by operating the extension instruction switch 12. The cooking of the food can be easily continued as needed, and the usability is excellent.

In the cooking device of the present invention described above, as shown in FIG. 5 (a), the time interval between the time when the alarm is issued and the time when the burner 1 is stopped is determined by the value of the "stop time t _T ". regardless etc., set in a fixed manner, therefore, has been determined from the start of cooking so that the variable according to the "stop time t _T" time interval up to the point of alarm, for example, FIG. 5
As shown in (b), the time interval from the start of heating cooking to the time of the generation of the alarm is fixedly set regardless of the value of the “stop time t _T ”, and the time interval from the time of the generation of the alarm to the time of stopping the burner 1 The time interval may be variable, or, as shown in FIG. 5 (c), the time interval from the start of heating cooking to the time of the generation of the alarm, and the time from the time of the generation of the alarm to the time of stopping the burner 1. Both of the time intervals up to may be variably determined according to the length of the “stop time t _T ” or the set temperature T _S.

In this embodiment, even if the heating operation of the burner 1 is extended by operating the extension instruction switch 12, if the set temperature T _S is the same, the “stop time t _T ” is reduced. was constant, equal to shorter than the next of the "stop time t _T" for instance last "stop time t _T" when the extension instruction switch 12 is operated, the extension instruction switch 12
May be changed for each operation.

Further, in the present embodiment, a gas stove has been described as an example of a heating cooker. However, the present invention can be applied to various heating cookers such as electric stoves and ovens as in the present embodiment. Of course.

[0042]

As is clear from the above description, the present invention
According to the heating cooker, the heating source is controlled by the control means so that the cooking temperature set by the temperature setting means and the cooking temperature detected by the temperature detection means substantially match, while the set cooking temperature is The higher the temperature, the shorter the predetermined time set to be shorter from the start of cooking, the longer the stop means automatically stops the heating operation of the heating source, and at this time,
Before the stop, an alarm is issued by the alarm generating means to notify the user that the heating source is to be stopped soon, so that even when the heating source is left operating, even if the heating source is left, cooking of cooking, cooking of oil, etc. The heating source can be stopped at an appropriate timing according to various cooking contents having different cooking temperatures and cooking times, and a heating cooker excellent in safety and usability can be provided.

[0043] Further, comprises an extension instruction means for instructing the extension of the heating operation of the pressurized heat source, by its extension instruction, by which is adapted to extend the heating operation of the pressurized heat source and cancels the stop of the heating source, using If the user wants a long cooking time, the heating operation of the heating source can be easily extended by the extension instructing means to continue the heating cooking, and a heating cooker excellent in usability can be provided.

[Brief description of the drawings]

[1] An example system configuration diagram of a pressurized heat cooker of the present invention.

FIG. 2 is a block diagram of a main part of the cooking device of FIG . 1 ;

FIG. 3 is a flowchart for explaining the operation of the cooking device of FIG . 1 ;

FIG. 4 is a flowchart for explaining the operation of the cooking device of FIG . 1 ;

FIG. 5 is an explanatory diagram of the operation timing of the cooking device of FIG . 1 ;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Burner (heating source), 12 ... Extension instruction switch (extension instruction means) , 34 ... Temperature detection means , 36 ... Alarm generation means , 37 ... Stop means, 27 ... Temperature setting operation part (Temperature setting means) , 35 ... control means.

Claims (2)

(57) [Claims] 1. A heating cooker provided with a heating source for heating a food, a temperature setting means for setting a cooking temperature of the food, a temperature detection means for detecting a cooking temperature of the food, and the temperature. Control means for controlling the heating operation of the heating source so that the cooking temperature detected by the detection means substantially matches the cooking temperature set by the temperature setting means; and Stopping means for stopping the heating operation of the heating source when a predetermined time determined according to the cooking temperature has elapsed, and alarm generating means for issuing an alarm at a predetermined time within the predetermined time, wherein the predetermined time corresponds to the temperature setting. A heating cooker characterized in that the cooking time is determined in a shorter time as the cooking temperature set by the means is higher. And an extension instruction means for instructing the stop means to extend the heating operation of the heating source by a predetermined operation after the alarm is issued by the alarm generation means, wherein the stop means is provided by the extension instruction means. heating cooker of claim 1 Symbol mounting characterized by releasing the stop of the heating operation of the heating source that allowed to extend the heating operation of the pressurized heat when subjected to extended instruction.