JPH116621A - Gas cooking stove with rice boiling function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of a failure in rice boiling because of a thermal power being left non-regulated by a method wherein when, during selection of a rice cooking mode by a mode selector, a thermal power regulator is not matched with a rice cooking position, this effect is announced. SOLUTION: A gas cooking stove comprises a grill 1, a right burner 2, and a standard burner 3. A temperature sensor 3a to detect the temperature of a substance to be cooked by bringing the sensor into contact with a pan bottom is arranged at the inside diameter part of the standard burner 3. A thermal power regulator 9 for a standard burner 3 and a plurality of selection buttons 10 being a mode selector are arranged at the left upper part of a full panel 4. In a rice cooking mode, it is decided based on a signal from a position sensor whether the thermal power regulator 9 is matched with a rice cooking position. When not matched therewith, a reporting unit, such as a buzzer, arranged at the back of the full panel 4 is operated, it is announced to a user that a thermal power is left non-regulated, and announcing operation is stopped when the thermal power regulator 9 is matched with a rice cooking position. Thereafter, rice cooking is controlled by a signal from the temperature sensor 3a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas stove with a rice-cooking function capable of cooking rice in addition to ordinary cooking and cooking.

[0002]

2. Description of the Related Art A gas cooker with a rice cooking function includes a temperature sensor for detecting the temperature of an object to be cooked by a burner, and control means for controlling the burner. When the mode is selected, rice cooking control is performed based on a signal from the temperature sensor, for example, control is performed to extinguish the burner when the temperature detected by the temperature sensor rises to the rice cooking completion temperature.

A gas stove is provided with a manual flow control valve provided in a gas supply path to a burner, and the burner power is adjusted by operating the flow control valve. If the heating power is too high, the wick remains or burns, and if the heating power is too low, it takes too much time and the cooking becomes too fast to cook well.

[0004] Therefore, conventionally, a display indicating a rice cooking position at which a heating power suitable for rice cooking is obtained is provided as an operation guide display of a heating power adjuster for adjusting the heating power of the burner by operating a flow control valve, and the rice cooker is operated by a mode selector. In addition to selecting the mode, rice is cooked by adjusting the thermal power adjuster to the rice cooking position.

[0005]

In the above-mentioned conventional example, it is necessary to properly operate both the mode selector and the heating power adjuster when cooking rice. However, rice can be cooked only by selecting the rice cooking mode with the mode selector. When misunderstanding that the rice cooker does not set the heating power adjuster to the rice cooker position and cooks rice, there may be a failure such as burning or leaving a core of rice.

SUMMARY OF THE INVENTION In view of the above, it is an object of the present invention to prevent a rice cooker from failing due to forgetting to adjust the heating power when cooking rice.

[0007]

Means for Solving the Problems In order to solve the above problems,
In the present invention, a temperature sensor that detects the temperature of the object to be heated by the burner, and a control unit that controls the burner,
A rice cooker equipped with a rice cooker function that executes rice cooker control based on a signal from a temperature sensor when a rice cooker mode is selected as a control mode of a control means by a mode selector, and is provided through a gas supply path to a burner. When a rice cooker mode is selected by a mode selector, a display indicating a rice cooker position at which a thermal power suitable for rice cooker is obtained is provided as an operation display guide of a thermal power adjuster for operating a burner power by operating a flow control valve provided. When the thermal power adjuster does not match the rice cooking position, there is provided a notifying means for notifying this.

According to this, when the rice cooker selects the rice cooker mode and cooks rice, if the user forgets to adjust the heating power, the user is notified by the notification means. This prevents the rice cooker from failing due to forgetting to adjust the heating power. You.

The notification operation of the notification means may be stopped after a lapse of a predetermined time. However, in order to more surely prevent forgetting to adjust the heating power, the notification operation of the notification means is performed by setting the heating power adjuster to the rice cooking position. It is desirable to continue until they are combined.

[0010]

FIG. 1 shows a gas stove having a grill 1, a large burner 2 on the right side and a standard burner 3 on the left side. A temperature sensor 3a for detecting the temperature by contacting the bottom of the pot is provided. On the front panel 4 of the stove, a fire extinguishing button 5 for a burner (not shown) for the grill 1, a fire extinguishing button 6 for the large burner 2, and a heating power regulator 7 for the large burner 6 thereon.
And a fire extinguishing button 8 for the standard burner 3, a heating power adjuster 9 for the standard burner 3 thereon, and a plurality of selection buttons 10 as mode selectors.

Cooking rice is performed using a standard burner 3. As shown in FIG. 2, the gas supply path for the standard burner 3 includes an electromagnetic safety valve 11 and a main valve 12 in order from the upstream side.
, A flow regulating valve 13, and a temperature regulating solenoid valve 14 with a bypass orifice 14a are interposed. Electromagnetic safety valve 1
1, the main valve 12, and the flow regulating valve 13, as shown in FIG.
It is incorporated in the valve casing 15 of the valve unit. At the front end of the valve casing 15, a fire extinguishing button 8
A movable element 16 is provided, which is urged forward (to the left in FIG. 3) by a spring 16a abutting on the back surface of the movable element 16. A rod 17 pushed by the movable element 16 is inserted into the valve casing 15,
The rear end of the rod 17 is opposed to the valve body 11 a of the electromagnetic safety valve 11, and the valve body 12 of the
a is attached.

The movable member 16 is locked at a middle position by a heart cam type push-push mechanism 18 in a return operation from a rear push-off position. When the point fire extinguishing button 8 is pressed, the rod 17 is pushed rearward through the mover 16, the main valve 12 is opened, and the electromagnetic safety valve 1 is opened.
1 is pressed and opened (the state shown in FIG. 3), and at the same time, an ignition switch (not shown) is turned on to ignite the standard burner 3. When the standard burner 3 is ignited, the electromagnetic safety valve 11 is kept open by the electromotive force of the thermocouple 19 (see FIG. 2) facing the standard burner 3. In this state, the push operation of the fire extinguishing button 8 is released, and the mover 16 is returned to the intermediate position locked by the push-push mechanism 18. In this intermediate position, the electromagnetic safety valve 1
Although the pressing of 1 is released, the main valve 12 is kept open and the standard burner 3 is kept ignited. When the point fire extinguishing button 8 is pushed again, the lock of the mover 16 at the intermediate position is released, and when the push operation is released, the mover 16 returns to the forward position, the main valve 12 is closed, and the standard burner 3 is turned off. Fire extinguished.

The flow regulating valve 13 includes a valve casing 15
And a needle valve rotatably and vertically inserted into an upper end portion of a rising portion 15a extending upward. A cap 20 is mounted on the upper end of the rising portion 15a. A slanted guide hole 20a is formed in the cap 20, and a pin 13a attached to the upper end of the flow control valve 13 is engaged with the guide hole 20a. I have. And the cap 20
A lever 21 is pivotally mounted on an upper surface of the lever 21 by a shaft 21a, and a fork portion 21b that sandwiches the pin 13a is formed on the lever 21.
1 rotates the flow regulating valve 13 while rotating the guide hole 20a.
, And moves up and down, so that the amount of gas supplied to the burner 3 is increased or decreased. The lever 21 includes a connecting portion 21d extending forward through a spring joint 21c, and the thermal power adjuster 9 is attached to a front end of the connecting portion 21d. When the thermal power regulator 9 is slid to the right in FIG. 1, the flow control valve 13 is moved downward, the gas amount is reduced, the thermal power of the burner 3 is reduced, and the thermal power regulator 9 is slid to the left. The flow control valve 13 moves upward, the amount of gas increases, and the thermal power of the burner 3 increases, and the thermal power is reduced to a high flame (for example, 2300 kcal / h) and a low flame (for example, 500 kcal).
/ H).

The heating power suitable for cooking rice is medium heat (for example, 1100 kcal / h). On the front panel 4, as an operation guide display of the heating power regulator 9, "strong" at the left end of the operation range of the heating power regulator 9 is displayed. In addition to "weak" at the right end, "cooked rice" is displayed at an intermediate position where a heat power suitable for cooking rice can be obtained. Then, on the back surface of the front panel 4, there is provided a position sensor 22 including a limit switch and the like for detecting when the heat power adjuster 9 is slid to the “rice cooking” position by contacting the heat power adjuster 9 and the lever 21. I have.

The position sensor 22 and the temperature sensor 3
The signal from the button a and the mode selection button 10 is input to the control means 23 comprising a microcomputer.
As the mode selection button 10, a rice cook button 10a,
A tempura button 10b, a water heater button 10c, and a stew button 10d are provided. The control means 23 is activated when the standard burner 3 is ignited by pressing the fire extinguishing button 8, and when the above-mentioned mode selection buttons 10a to 10d are pressed after the ignition, the control means 23 becomes the rice cooking mode, the tempura. The control in the corresponding mode among the mode, the boiling mode and the boiling mode is executed, and any of the buttons 10
When neither a nor d is pressed, control in the overheat prevention mode is executed.

In the tempura mode, the boiling mode and the boiled mode, the temperature detected by the temperature sensor 3a is maintained at a temperature suitable for each mode, for example, 180 ° C. in the tempura mode, 100 ° C. in the boil mode, and 120 ° C. in the boiled mode. Thus, the opening and closing of the temperature control solenoid valve 14 is controlled.

In the overheat prevention mode, when the temperature detected by the temperature sensor 3a rises abnormally (for example, 250 ° C.) due to empty cooking or the like, the fire extinguishing switch 24 intervening in the connection circuit between the thermocouple 19 and the electromagnetic safety valve 11 is turned off. Then, the electromagnetic safety valve 11 is closed and the standard burner 3 is extinguished. In addition, even when the tempura mode, the water heating mode or the boiled mode is selected, the control in the overheat prevention mode is performed in order to cope with the abnormal rise in temperature due to the empty cooking.

In the rice cooking mode, as shown in FIG. 4, it is determined based on a signal from the position sensor 22 whether or not the thermal power adjuster 9 matches the "cooking" position (S1). Activates a notifying means 25 such as a buzzer provided on the back side of the front panel 4 (S2) to notify the user that he has forgotten to adjust the heating power, and the heating power adjuster 9 sets the "cooked rice".
When the position is adjusted, the notification operation of the notification means 25 is stopped (S3). Thereafter, rice cooking control is executed based on a signal from the temperature sensor 3a. In the present embodiment, the detected temperature T of the temperature sensor 3a is the rice cooking completion temperature TS (for example, 140
° C) (S4), the fire extinguishing switch 24 is turned off to extinguish the standard burner 3 (S5).

In FIG. 4, the heating power adjuster 9 is "cooked rice".
The notification operation of the notification means 25 is continued until the position is adjusted to the position. However, as shown in FIG. 5, an elapsed time t from the start of the operation of the notification means 25 is measured, and t is a predetermined set time ts (for example, 5 seconds). If the above is reached (S6), the notification operation of the notification means 25 can be stopped. However, in order to prevent forgetting to adjust the thermal power, it is desirable to continue the notification operation until the thermal power adjuster 9 is set to the "rice cooking" position as in the method shown in FIG.

The notification means 25 may emit different sounds depending on whether the heat power adjuster 9 matches the "cooked rice" position or not. For example, a sound of "pi, pi, pi" is output for a short time (for example, 2 seconds) in order to notify that the rice cooking mode is set when a match is found, and a "pi, pi" is sounded until a match is found when no match is found. May be issued. Further, the notification means 25 may be configured to visually notify such as an alarm lamp.

In the above embodiment, the safety valve circuit for connecting the thermocouple 19 to the electromagnetic safety valve 11 is provided. The output of the thermocouple 19 is input to the control means 23, and the output from the thermocouple 19 and the temperature sensor are provided. The control means 23 may control the energization of the electromagnetic safety valve 11 in accordance with the output from 3a.

Although the stove provided with the base valve 12 and the flow control valve 13 has been described above, the present invention can be similarly applied to a stove using a rotary gas cock which also serves as the base valve and the flow control valve.

[0023]

As is apparent from the above description, according to the present invention, if the user forgets to adjust the heating power when selecting the rice cooking mode and cooks rice, the user is informed of this. Failure of rice cooking can be prevented beforehand, and usability is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of an example of a stove of the present invention.

FIG. 2 is a circuit diagram showing a gas circuit of a burner and its control system.

FIG. 3 is a sectional view of a valve unit provided in a gas circuit.

FIG. 4 is a flowchart showing a control program in a rice cooking mode.

FIG. 5 is a flowchart showing another example of the control program in the rice cooking mode.

[Explanation of symbols]

 Reference Signs List 3 burner 3a temperature sensor 9 thermal power regulator 10 mode selector 13 flow regulating valve 23 control means 25 reporting means

Claims (3)

[Claims] 1. A temperature sensor for detecting a temperature of an object to be heated by a burner, and a control means for controlling the burner, wherein a temperature selector is used to select a rice cooking mode as a control mode of the control means by a mode selector. A gas cooker with a rice cooker function that performs rice cooker control based on the signal of the burner, and controls a flow control valve provided in a gas supply path to the burner to control the burner's firepower. As an operation display guide, a display for indicating a rice cooking position at which a heating power suitable for rice cooking is obtained, and a notifying means for notifying when the heating power adjuster does not match the rice cooking position when the rice cooker mode is selected by the mode selector. A gas stove with a rice cooking function. 2. The gas stove with a rice cooking function according to claim 1, wherein the notification operation of the notification means is stopped after a predetermined time has elapsed. 3. The gas stove with a rice cooking function according to claim 1, wherein the notification operation of the notification means is continued until the heating power adjuster is adjusted to the rice cooking position.