JPH11201456A - Gas cooking appliance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas cooking appliance for informing a user of a boiling state without an exclusive key, and informing a user before burning and extinguishment and before actuation of prevention against a fire from tempura oil. SOLUTION: A gas cooking appliance comprises a burner, a main body for housing the burner, a temperature detector 6 provided on the upper part of the main body, a buzzer 23 and a control part 15. The temperature detector 6 detects the temperature of a vessel for storing a material to be cooked. The control part determines the material to be cooked as a boiled material. When the control part has determined that the material to be cooked is boiled, it actuates the buzzer 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a gas stove.

[0002]

2. Description of the Related Art Conventionally, this type of gas stove is disclosed, for example, in Japanese Patent Application Laid-Open No. Hei 5-60326. According to this publication, a gas stove including a burner, a main body, a temperature detection unit, and a control unit is disclosed. Further, there has been proposed a device provided with a key for exclusive use of a water boiler and provided with a fire extinguishing function for automatically detecting when boiling, or preventing the food from being cooked after boiling. In addition, when cooking tempura on a gas stove, the temperature of the tempura oil rises, and there is also proposed one having an automatic fire extinguishing function for preventing a tempura oil fire.

[0003]

However, the above-mentioned stove requires a dedicated key to detect the boiling state of the cooked food, and the first disadvantage is that the production cost is increased and the user is troublesome. is there. In addition, there is a second drawback in that the fire extinguishing function is activated and cooking is stopped halfway.

[0004] Further, there is a third disadvantage that the tempura oil fire prevention function is activated, the cooking is completed halfway, and the usability is poor. Therefore, the present invention provides a gas stove that notifies the user of the boiling state without a dedicated key, notifies the user before the fire extinguishes, and informs the user before the operation of preventing the tempura oil fire in consideration of the conventional disadvantages.

[0005]

According to a first aspect of the present invention, there is provided a burner, a main body for accommodating the burner, a temperature detector provided on an upper portion of the main body, a buzzer,
A temperature detector for detecting the temperature of the container containing the object to be cooked, and the controller determines that the object to be cooked is boiled, and activates a buzzer when it is determined that the object to be cooked is boiling. Things.

According to a second aspect of the present invention, there is provided a burner, a main body for housing the burner, a temperature detecting section provided on an upper portion of the main body, a buzzer, and a control section, wherein the temperature detecting section stores the object to be cooked. The controller detects the temperature of the container to be cooked, determines the food to be boiled, and activates the buzzer before the fired fire extinguishing operation of the food.

According to a third aspect of the present invention, there is provided a burner, a main body accommodating the burner, a temperature detecting section provided on an upper part of the main body, a buzzer, and a control section, wherein the temperature detecting section accommodates an object to be cooked. The controller detects the temperature of the container to be cooked, determines the food to be fried, and activates the buzzer before the fire prevention operation of the cooking oil of the tempura oil.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A gas stove 1 according to an embodiment of the present invention will be described below with reference to the front view of FIG. In FIG. 1, the main body 2 is made of an iron plate or the like and is formed in a substantially box shape. Burners (not shown) are housed and fixed in the main body 2 one by one on the left and right. On the top plate 3 placed on the upper part of the main body 2, the gods 4 and 5 are fixed.

The thermistor 7 constituting the temperature detecting section 6 is located at the upper part of the main body 2 and is disposed substantially at the center of the main body 5, and is provided so as to contact the bottom of a container (both not shown) for accommodating the object to be cooked. Have been. Thermocouples 8, 9 are provided to detect the burner combustion flame. The ignition buttons 10 and 11 are provided on the left and right sides of the front to open and close respective gas valves (not shown).

A grill door 12 is provided at the center of the front, a grill burner (not shown) is arranged behind the grill door 12, and an ignition button (for grill) 13 is provided at the front.

Next, an electric block diagram of the gas stove 1 will be described with reference to FIG. The thermocouple 9 is connected to a control unit 15 via a flame detection circuit 14, and the control unit 15 includes, for example, a microcomputer.

The temperature detecting section 6 comprises, for example, a thermistor 7 and a temperature detecting circuit 16 and is connected to an input terminal of the control section 15. The cock switch 17 is provided on the gas valve, and is connected to an input terminal of the control unit 15 via a switch detection circuit 18. The battery 19 is connected to an input terminal of the control unit 15 via a power supply circuit 20.

The solenoid valve 21 is provided on the gas valve, and is connected to an output terminal of the control unit 15 via a solenoid valve driving circuit 22. The buzzer 23 is connected to an output terminal of the control unit 15. The series circuit of the igniter 24 and the ignition switch 25 is connected to the dry cell 19. The gas stove 1 is constituted by the above components.

Next, the operation of the gas stove 1 will be described with reference to FIGS. 3 is a flowchart of the gas stove 1, FIG. 4 is a flowchart following the flowchart, and FIG. 5 is a temperature characteristic diagram (the horizontal axis indicates elapsed time, and the vertical axis indicates a temperature detected by the temperature detection unit 6). In these figures, the user places a container (not shown) accommodating the object to be cooked on the gotoku 5. The thermistor 7 in contact with the bottom of the container detects the temperature at the bottom of the container, and the temperature information is input to the control unit 15 via the temperature detection circuit 16.

Next, when the user presses the ignition button 11,
It is determined whether the ignition button is pressed or not (step S1 in FIG. 3), and the ignition operation starts (S2). That is, the cock switch 17 is turned on, the gas valve is opened, the adsorption current to the solenoid valve 21 flows, the solenoid valve 21 is opened, and gas is supplied to the burner. Then, the ignition switch 25 is turned on, the igniter 24 performs a spark operation, and a combustion flame is formed by the burner.

Then, when the user releases the ignition button 11,
The ignition switch 25 is turned off, the igniter 24 stops sparking, and the adsorption current stops. Next, it is determined whether the thermoelectromotive force detected by the thermocouple 9 is 3 mV or more of DC. If YES (S3), load determination control is performed (S4). For example, in order to make a curry roux, the user drops oil in a container, heats it, puts meat and vegetables, and fries. At this time, the control unit 15
Determines whether the load is boiled or fried (including stir-fry) in the process of increasing the temperature detected by the thermistor 7 from a low state (load determination control). It is determined that the food is boiled based on the characteristics shown in FIG.

When the temperature detected by the thermistor 7 gradually rises and passes 140 ° C. (point a in FIG. 5, FIG.
(S5), the control unit 15 performs fried food control (S6). That is, when the detected temperature of the thermistor 7 passes 140 ° C., the control unit 15 determines that the load (cooked food) is fried (if the cooked food is boiled, the detected temperature usually passes 140 ° C.). There is no).

The frying control comprises the following steps. That is, the detected temperature of the thermistor 7 gradually rises, and it is determined that the detected temperature is equal to or lower than 120 ° C. (NO) (S7). When the detected temperature passes 180 ° C. (S8), a notification alarm sounds (S9). That is, in FIG. 5, when the detected temperature passes 180 ° C. (at the time point “b”), the temperature is suitable for the stir-fry and the buzzer 23 is operated to notify the user of the appropriate temperature. The notification alarm sounds, for example, three consecutive beeps.

When the fried food is tempura cooked,
When the detected temperature exceeds 180 ° C., the tempura is about to be fried, and the user is informed that “the temperature is 180 ° C. when the tempura is fried” by informing the user of “pip-pip”, which improves the usability.

If the user moves away from the gas stove 1 or fries too much during the stir-fry, the detection temperature further rises, as shown by the broken line C in FIG. 5, to a temperature unsuitable for the stir-fry. In this way, when the detected temperature exceeds 180 ° C. and becomes the cut temperature −16 ° C. (S10, for example, 263 ° C.)
And a warning alarm is output (S1 in FIG. 5).
1). Note that the cut temperature is a temperature at the time of the operation of preventing the oil from cooking in the tempura (for example, 279 ° C.). At this time, the gas supply is stopped.

As described above, the detected temperature is the cut temperature -16 ° C.
Then, the temperature is not suitable for stir-fry or fried food (including tempura), and the buzzer 23 is operated. That is, when the cut temperature reaches -16 ° C, for example, a warning alarm is sounded three times in succession, for example, "beep beep," to inform the user that "Tempura oil fire prevention function is activated. Please reduce the heat." . As a result, the user throttles the heat,
The tempura oil fire prevention function is activated, the gas supply is stopped, and cooking can be prevented from being interrupted.

Also, if the detected temperature is a cut temperature of -16.degree.
(S10), the cutting temperature is reached (S1).
2) Fire extinguishing operation is performed (S13 in FIG. 3) and the gas valve is closed. As a result, a tempura oil fire or the like can be prevented.

Next, when the user determines that the stir-fry is finished, and puts water and a roux into the container (point e in FIG. 5), the detected temperature drops rapidly. When the detected temperature is lower than or equal to 120 ° C. (S7 in FIG. 4, point f in FIG. 5), load determination control is performed (S14), the load is determined to be boiled, and boiled after fried food is controlled (S15). ).

At this time, the detected temperature is the lowest temperature (g in FIG. 5).
Point) and then begin to rise. Then, half of the time required for the detected temperature to rise from 88 ° C. to 98 ° C. is defined as a reference time, and if it takes more than the reference time to increase the temperature by 0.5 ° C. after 98 ° C., it is determined that the cooking load is required. .

When the detected temperature exceeds 100 ° C. (point i), the boiling temperature is determined (S16), and the notification alarm is set to, for example, “pipi” and “3”.
Sounds continuously (S17). In this way, when the control unit 15 determines that the food to be boiled (point h) and determines that the food to be boiled (point i), the control unit 15 activates the buzzer 23 to prompt the user to “boil. I did it "and the usability improved.

After the boiling temperature is determined (point i), if the user moves away from the gas stove 1 or leaves it in a boiling state, the broth in the container gradually disappears and the detected temperature starts rising again. Then, when the detected temperature reaches the boiling temperature + 3 ° C. (S18), a warning alarm is displayed, for example, “beep beep” and 3
The sound rings continuously (S19, point j in FIG. 5).

That is, the control unit 15 determines that the cooked food is boiled, and activates the buzzer 23 before the fired fire extinguishing operation of the cooked food, thereby instructing the user, "You are burnt. Please stop the gas." Inform. As a result, the user can stop the gas and prevent the cooking from being performed halfway (becoming scorched).

If the user ignores the warning alarm, the detected temperature becomes a scorched temperature (S2).
0), a fire extinguishing operation is performed (S13). In addition, in the boiled food control after fried food, the time required for the detected temperature to rise from the boiling temperature (point i) + 10 ° C to the boiling temperature (point i) + 15 ° C within 10 seconds after ignition is within 60 seconds, And then 10
If the detected temperature does not decrease in a second, the detected temperature (point k) at that time is regarded as the burning temperature. When the temperature reaches the burning temperature, the fire is automatically extinguished to prevent a fire or the like.

If the above-mentioned fire extinguishing is not activated, the detected temperature is a cut temperature (for example, 145 ° C., m
When the point is reached, the gas supply is automatically stopped. This concludes the description of the curry roux making operation.

Next, the operation when the user performs normal cooking will be described. When the user puts, for example, pumpkin or fish in the container together with water, the temperature characteristic becomes as shown by a two-dot chain line n in FIG. When the user presses the ignition button 11 (S1),
Ignition operation (S2), if DC 3mV or more (S3),
Load determination control is performed (S4), and it is determined that the food is boiled.

Since it is a boiled food, the detected temperature does not pass through 140 ° C. (S5), and normal boiled food control is performed (S2)
1). Then, half of the time required for the detected temperature to rise from 88 ° C. to 98 ° C. is set as the reference time. Confirm (p point).

When the detected temperature exceeds 100 ° C. (q point),
The boiling temperature is determined (S22), and a notification alarm is output (S23). And the detected temperature is the boiling temperature + 3 ° C
(S24, r point), a warning alarm is output (S25). When the detected temperature reaches the burning temperature (S26, point s), the supply of gas is stopped.

[0033]

As described above, according to the first aspect of the present invention, the control section determines the food to be boiled and activates the buzzer when it is determined that the food has boiled. By notifying the boiling state by the buzzer in this way, the user can know the state of the food, and the usability is improved. Further, since it is not necessary to operate a dedicated key to know the boiling state as in the related art, the manufacturing cost is reduced and the labor for key operation by the user can be saved.

According to a second aspect of the present invention, the control section determines the food to be boiled and activates the buzzer before the fire-extinguishing operation of the food to be cooked. In this way, the user is informed that "it will be scorched. Please stop the gas", and the user can stop the gas to prevent the cooking from being performed halfway (becoming scorched).

According to a third aspect of the present invention, the control section determines the food to be fried and activates the buzzer before the operation of preventing the food from cooking with a tempura oil. Since the user reduces the heating power by the operation of the buzzer, the tempura oil fire prevention function is activated, the supply of gas is stopped, and it is possible to prevent the cooking from being interrupted halfway.

As described above, the user can be notified of the boiling state, the state before scorching, and the state before the prevention of tempura oil fire according to the boiled or fried food, respectively, so that the cooking time can be reduced. It is possible to obtain and cook according to a cookbook (a book that teaches how to make dishes).

[Brief description of the drawings]

FIG. 1 is a front view of a gas stove according to an embodiment of the present invention.

FIG. 2 is an electric block diagram of the gas stove.

FIG. 3 is a flowchart showing the operation of the gas stove.

FIG. 4 is a flowchart following the above flowchart.

FIG. 5 is a characteristic diagram of a detected temperature of a thermistor provided in the gas stove.

[Explanation of symbols]

 2 Body 6 Temperature detection unit 15 Control unit 23 Buzzer

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Misaki Nishimura 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Tottori Sanyo Electric Co., Ltd.

Claims (3)

[Claims] 1. A burner, a main body containing the burner,
A temperature detection unit provided at an upper portion of the main body, a buzzer, and a control unit, wherein the temperature detection unit detects a temperature of a container that stores the object to be cooked, and the control unit boil the food to be cooked. Wherein the buzzer is actuated when it is determined that the food has boiled. 2. A burner, a main body accommodating the burner,
A temperature detection unit provided at an upper portion of the main body, a buzzer, and a control unit, wherein the temperature detection unit detects a temperature of a container that stores the object to be cooked, and the control unit boil the food to be cooked. Wherein the buzzer is actuated before the fire extinguishing operation of the object to be scorched. 3. A burner, a main body accommodating the burner,
A temperature detection unit provided at an upper part of the main body, a buzzer, and a control unit, wherein the temperature detection unit detects a temperature of a container accommodating the food, and the control unit fries the food. And before the operation of preventing the cooking object from tempura oil fire,
A gas stove characterized by operating the buzzer.