KR100225623B1 - Control system for gas-range and method thereof - Google Patents

Abstract

The present invention relates to a control device and a method for a gas stove that is ignited during the instantaneous operation of the ignition knob and automatically extinguished when the cooking time elapses. The present invention relates to a method for inputting a cooking time while igniting a gas supplied to a burner. Switch input means, control means for controlling the opening and closing operation of the safety valve in accordance with an operation command signal input by the switch input means, an igniter for igniting the gas supplied to the burner under the control of the control means; Ignition detection means for detecting the ignition of the burner by sensing the sensitivity of the spark ignited by the igniter, and a valve for driving the safety valve to open and close the flow path of the gas supplied to the burner under the control of the control means It consists of a driving means, which is ignited during the instantaneous operation of the ignition knob, and automatically extinguishes when the cooking time elapses. And to a convenient, there is an effect that can be a simple structure while reducing the manufacturing cost by automatically controlling the opening and closing operations of the safety valve.

Description

Gas stove control device and method

1 is a schematic view showing a conventional gas stove.

2 is a schematic configuration diagram of a gas stove according to an embodiment of the present invention.

3 is a control block diagram of a gas stove control apparatus according to an embodiment of the present invention.

4 is a detailed circuit diagram of a valve driving means applied to the present invention.

5A and 5B are flowcharts showing the control operation sequence of the gas stove according to the present invention.

* Explanation of symbols for main parts of the drawings

10: burner 12: ignition knob

14: ignition switch 16: safety valve

18: nozzle 20: spark plug

30: power supply means 35: switch input means

40: control means 45: valve driving means

50: ignition mechanism driving means 51: igniter

55: ignition detection means 60: display means

The present invention relates to a control device and a method for a gas stove that is ignited during the instantaneous operation of the ignition knob and automatically extinguished when the cooking time elapses.

Generally, as shown in FIG. 1, the gas stove 3 is provided at the upper portion of the main body 1 so that the soup flowing down to the outside of the cooking vessel is collected. On the upper side, a support 5 for supporting the cooking vessel is seated, and a burner 7 connected to a gas supply line not provided by the lower side thereof is installed at the center of the soup tray 3.

The main body 1 is provided with an ignition knob 9 for igniting the gas supplied to the burner 7 and controlling the amount of gas supplied to the burner 7 at the same time.

In the gas stove configured as described above, when the user presses the ignition knob 9, the safety valve opens and gas is supplied to the burner 7, and the ignition switch is operated so that a voltage is applied to the ignition to burn the high pressure spark ( Discharge to 7) and ignite.

When the burner 7 is ignited, a thermal current is generated in the thermocouple and the safety valve is kept open by this current to cook. At this time, the burner is turned by turning the ignition knob 9 from side to side. Adjust the amount of gas supplied to (7) to control the firepower.

When the cooking is finished, the user turns the ignition knob 9 to block and extinguish the gas supplied to the burner 7, and when the burner 7 is extinguished, the air current of the thermocouple is lost and the safety valve is closed.

By the way, in the conventional gas stove, it takes a long time for the thermocouple is heated to generate an electromotive force for operating the safety valve, so the user must hold the ignition knob 9 for a predetermined time and ignite even after cooking. There was an inconvenience of having to extinguish the burner 7 by turning the handle 9.

Therefore, the recent electronic gas stove designed to solve the above problems has to be equipped with a separate solenoid valve (solenoid valve) in addition to the safety valve has a problem in that the structure is complicated and the rework costs increase.

Accordingly, the present invention has been made to solve the above problems, the object of the present invention is to ignite during the instantaneous operation of the ignition knob, the control device of the gas stove convenient to use and automatically extinguish when the set cooking time elapses. And to provide a method.

Another object of the present invention is to provide a gas stove control apparatus and method which can reduce manufacturing costs while having a simple structure by automatically controlling the opening and closing operation of a safety valve using a microcomputer.

In order to achieve the above object, a control device for a gas stove according to the present invention includes a burner for burning a gas, and a gas stove having a safety valve for opening and closing the gas to the burner, the gas stove being supplied to the burner. Switch input means for inputting a cooking time to input the switch signal to ignite the gas and to control the opening time of the safety valve, and the opening and closing operation of the safety valve in accordance with the operation command signal input by the switch input means. Control means for controlling the ignition, ignition mechanism driving means for driving the igniter to ignite the gas supplied to the burner according to the control of the control means, and whether the ignition of the burner by sensing the sensitivity of the spark ignited by the igniter An ignition detecting means for detecting a gas and a flow path of gas supplied to the burner under the control of the control means; Characterized in that the valve drive means for driving the safety valve to close.

In addition, the gas stove control method according to the present invention is a gas supply step of supplying gas to the burner by opening the safety valve in accordance with the operation of the ignition knob, and the gas supplied to the burner in accordance with the opening of the safety valve to the igniter An ignition step for igniting by the ignition step, an ignition discrimination step for determining whether the burner is ignited by sensing the sensitivity of the spark ignited in the ignition step, and when the ignition discrimination step is ignited, the basic cooking time is turned off while the ignition is determined A time input step of additionally inputting a cooking time by operating the ignition knob during a cooking operation by the basic cooking time set in the time setting step, a time setting step to be set, and a cooking time and the time set in the time setting step A time discrimination step for determining whether the cooking time input in the input step has elapsed, and the time discrimination When the cooking time has elapsed and that determined from the tap to close the safety valve made of a gas blocking step of blocking the gas supplied to the burner, characterized.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In FIG. 2, 10 is a burner which burns the gas supplied, 12 ignites the gas supplied to the burner 10, adjusts the amount of gas supplied to the burner 10, and inputs a cooking time. The ignition knob is operated by the user so as to operate, and 14 is an ignition switch which is turned on / off according to the pressing operation of the ignition knob 12.

And, 16 is a safety valve for opening and closing operation to supply or cut off the gas into the burner 10 in accordance with the operation of the ignition knob 12, 18 is an external not shown in accordance with the opening and closing operation of the safety valve 16 It is a nozzle for injecting the gas supplied through the gas supply pipe of the burner 10.

In addition, 20 is an ignition plug to ignite by splashing a high-pressure spark in the gas injected into the burner 10, 55 is the burner 10 by sensing the sensitivity of the spark ignited when the ignition plug 20 is driven An ignition sensor that detects ignition or non-ignition.

A block diagram for controlling a safety valve of a gas stove configured as described above will be described with reference to FIGS. 3 and 4.

3 and 4, the power supply means 30 converts an AC voltage supplied from an AC power supply terminal (not shown) into a predetermined DC voltage Vcc necessary for driving the gas stove, and outputs it. The switch input means 35 inputs a switch signal to ignite the gas supplied to the burner 10 when the ignition knob 12 is pressed once, and simultaneously presses the ignition knob 12 twice. From the ignition knob 12 to input the cooking time to control the opening time of the safety valve 16 by the continuous pressing operation.

In addition, the control unit 40 receives the DC voltage Vcc output from the power supply unit 30 to initialize the gas stove as well as the operation command signal input by the switch input unit 35. As a microcomputer for controlling the overall operation of the stove, the control means 40 counters the time to control the opening operation of the safety valve 16 according to the cooking time input by the switch input means 35. It has a built-in timer.

In addition, the valve driving means 45 opens and closes a flow path of the gas supplied into the burner 10 through a gas supply pipe not shown from the outside under the control of the control means 40, thereby providing the valve driving means 45. ) Is turned on by receiving the divided voltage resistors R1 and R2 for dividing the valve control signal output from the output terminal P1 of the control means 40 and the voltage signal divided by the divided resistors R1 and R2. Transistor TR1 which operates / turns off and the voltage Vcc output from the power supply means 30 to supply or shut off gas into the burner 10 in accordance with the turn-on / turn-off operation of the transistor TR1. It is composed of a safety valve 16 that is applied through a resistor (R3) to open and close.

Further, the ignition mechanism driving means 50 drives and controls the igniter 51 to ignite the sparks by spraying the gas injected into the burner 10 under the control of the control means 40, and the ignition detection means 55 ) Is an ignition sensor that senses the sensitivity of the spark ignited when the igniter 51 is driven and outputs the detected flame sensitivity data to the control means 40 to determine whether the burner 10 is ignited.

In addition, in the drawing, the display means 60 displays the cooking time input by the switch input means 35 and the remaining cooking time which decreases during the operation of the gas stove under the control of the control means 40. .

Hereinafter, the effect of the control apparatus and the method of the gas stove comprised as mentioned above are demonstrated.

5A and 5B are flowcharts showing the control operation sequence of the gas stove according to the present invention, in which S denotes a step in FIGS. 5A and 5B.

First, when power is supplied to the gas stove, the power supply unit 30 supplies an AC voltage supplied from an AC power supply terminal (not shown) to a predetermined DC voltage necessary for driving the gas stove, thereby driving each circuit and control means 40. Output to

Therefore, in step S1, the DC range output from the power supply means 30 is received by the control means 40 to initialize the gas stove.

Subsequently, in step S2, the user presses the ignition knob 12 once to determine whether the ignition switch 14 is turned on. When the ignition switch 14 is not turned on (NO), the ignition switch 14 The operation of step S2 or less is repeated while keeping the gas stove in an operation standby state until it is turned on.

As a result of the discrimination in step S2, when the ignition switch 14 is turned on (YES), an operation start signal is input from the switch input means 35 to the control means 40, and the control means 40 in step S3. A high level valve control signal is output to the valve driving means 45 through the output terminal P1 so as to open the safety valve 16.

Accordingly, the high level valve control signal output from the output terminal P1 of the control means 30 is divided through the voltage dividing resistors R1 and R2 and applied to the base terminal of the transistor TR1, thereby providing the transistor TR1. Is turned on.

When the transistor TR1 is turned on, the current flows through the resistor R3 and the safety valve 16 to the ground terminal through the resistor R3 and the safety valve 16 by the DC voltage Vcc output from the power supply means 30. The safety valve 16 is opened.

When the safety valve 16 is opened, the gas flowing from the outside is supplied into the burner 10 through the nozzle 18, so in step S4, the control means 40 splashes a high-pressure spark on the burner 10 to ignite it. The control signal is output to the ignition mechanism driving means 50 to be performed.

Accordingly, in the ignition driving means 50, under the control of the control means 40, high pressure is applied to the igniter 51 for a predetermined time to splat a high pressure spark on the burner 10 through the ignition plug 20. By igniting the gas supplied to the burner 10, heat generated when the gas is burned in the burner 10 is transferred to a cooking container, and cooking is performed.

At this time, in step S5 the voltage value of the high or low level corresponding to the sensitivity of the spark ignited during the ignition operation by the drive of the igniter 51 is detected by the ignition sensor 55 and output to the control means 40 The control means 40 receives the voltage value sensed by the ignition sensor 55 and determines whether the burner 10 is ignited.

As a result of the discrimination in step S5, in the case of ignition (YES), the flow proceeds to step S6, and the ignition driving means 50 cuts off the high pressure applied to the igniter 51 under the control of the control means 40 to igniter ( 51) is turned off, and in step S7 the control means 40 sets the basic cooking time (for example, 5 minutes) in accordance with the ON signal of the ignition switch 14 by the one-time pressing operation of the ignition knob 12. While setting, the basic cooking time is displayed through the display means 60.

Then, in step S8, it is determined whether to add the cooking time, and when adding the cooking time (YES), the flow advances to step S9, where the user presses the ignition knob 12 again during the cooking operation, that is, the second time ( From the second press, the cooking time is input. The cooking time is input while the basic cooking time is increased, and the cooking time input in addition to the basic cooking time is displayed through the display means 60.

At this time, in step S10, the control means 40 determines whether the countered cooking time has elapsed while decrementing the cooking time input by the continuous pressing operation from the second pressing of the ignition knob 12, and thus the cooking time. If this has not elapsed (NO), the operation of step S10 or less is repeated while the cooking operation is continued until the cooking time has elapsed.

As a result of the discrimination in step S10, when the cooking time has elapsed (YES), the process proceeds to step S11 and the control means 40 lowers the level through the output terminal P1 so as to cut off the gas supplied to the burner 10. Outputs a valve control signal to the valve drive means 45.

Accordingly, the low level valve control signal output from the output terminal P1 of the control means 40 is divided through the voltage dividing resistors R1 and R2 and applied to the base terminal of the transistor TR1 so that the transistor TR1 is applied. Is turned off.

When the transistor TR1 is turned off, no current flows through the safety valve 16, the safety valve 16 is closed, and the supply of gas to the burner 10 is shut off, thereby ending the operation.

On the other hand, if the result of the discrimination in step S5 is not ignited (NO), the flow advances to step S51 to determine whether a predetermined time (minimum driving time of the igniter required to ignite the burner, about 5 seconds) has elapsed, and then the predetermined time. If this has not elapsed (NO), the flow returns to step S5 to repeat the operation of step S5 or less.

As a result of the discrimination in step S51, when a predetermined time has elapsed (YES), the flow goes to step S52, and the ignition driving means 50 cuts off the high pressure applied to the igniter 51 under the control of the control means 40. Then, the igniter 51 is turned off, the process proceeds to the step S11, and the operation of the step S11 or less is repeated.

In addition, when the cooking time is not added (NO in the determination result at step S8), the process goes to step S10 and the operation of step S10 or less is repeated while reducing the basic cooking time set in the control means 40. FIG.

According to the gas stove control apparatus and method according to the present invention as described above, it is ignited during the instantaneous operation of the ignition knob, and automatically extinguished and used when the set cooking time has elapsed. By controlling the opening and closing operation of the safety valve automatically, the structure is simple, but there is an excellent effect of reducing the manufacturing cost.

Claims (3)

A burner that burns gas, a safety valve that opens and closes to supply and shut off gas to the burner, an igniter to ignite the gas supplied to the burner, and an ignition knob to adjust the amount of gas supplied to the burner In the equipped gas oven, the device for opening and closing the safety valve is the ignition detection means for detecting the ignition of the burner by detecting the sensitivity of the spark ignited by the igniter, the operation command and cooking of the gas oven A switch input means for inputting time and controlling the opening / closing operation of the safety valve in accordance with an operation command signal input by the switch input means, and the igniter and safety valve according to the ignition detection signal detected by the ignition detection means. Control means for controlling the driving of the gas, and opening and closing the flow path of the gas supplied to the burner under the control of the control means. And a valve driving means for opening and closing the safety valve so that the switch input means inputs a switch signal to the control means to ignite the burner when the ignition knob is pressed once. Range control device. A burner that burns gas, a safety valve that opens and closes to supply and shut off gas to the burner, an igniter to ignite the gas supplied to the burner, and an ignition knob to adjust the amount of gas supplied to the burner In the equipped gas oven, the device for opening and closing the safety valve is the ignition detection means for detecting the ignition of the burner by detecting the sensitivity of the spark ignited by the igniter, the operation command and cooking of the gas oven A switch input means for pressurizing time and controlling the opening and closing operation of the safety valve in accordance with an operation command signal input by the switch input means, and the igniter and safety valve in accordance with the ignition detection signal detected by the ignition detection means. Control means for controlling the driving of the gas, and opening and closing the flow path of the gas supplied to the burner under the control of the control means. So that consists of a valve drive means for opening and closing driving the safety valve, wherein the switch input unit is a control apparatus for a gas cooking appliance, characterized in that for setting the cooking time to the control means from the time of two times the pressing of the ignition knob. A gas supply step of supplying gas to the burner by opening the safety valve according to the operation of the ignition knob; an ignition step of igniting the gas supplied to the burner by the igniter according to the opening of the safety valve; and ignition in the ignition step. The ignition judging step of determining whether the burner is ignited by sensing the sensitivity of the flame, and if it is determined that the ignition is not ignited in the ignition judging step, the first gas which cuts off the gas supplied to the burner by turning off the igniter and the safety valve. A time setting step of setting the basic cooking time while turning off the igniter when it is determined that the ignition is detected in the ignition discriminating step; and operating the ignition knob again during the cooking operation by the basic cooking time set in the time setting step. A time input step of additionally inputting a cooking time and a basic set in the time setting step; A time discriminating step of determining whether the cooking time and the additional cooking time input in the time input step have elapsed, and closing the safety valve to shut off the gas supplied to the burner when it is determined that the cooking time has elapsed in the time determining step. Gas stove control method characterized in that consisting of two gas blocking step.