KR19980041359A - Control method for initial ignition of cooktop burner of gas oven - Google Patents

Abstract

The present invention relates to a cooktop burner initial ignition control method of a gas oven, in particular, to a cooktop burner initial ignition control method of a gas oven, when the user turns on the ignition switch 10 of the cooktop burner, the control unit ( 20 drives the electromagnet 40, and when the gas is supplied from the gas valve to the first stage and 100 gas or more through the gas valve in the first stage, the controller 20 ) Drives the igniter 30, and then the second step 104 and 105 determines whether a predetermined time has elapsed after the igniter 30 is driven, and in the second step, the control unit 20 performs the igniter 30. After a predetermined time has elapsed after driving, driving of the electromagnet 40 and the igniter 30 is stopped, and a third step (106) (107) of determining whether a voltage is detected in the ignited cooktop burner is performed. In 3 steps When the voltage is detected by the detection signal applied from the thermocouple, the controller 20 determines whether a predetermined predetermined time (about 20 seconds) has elapsed, and when the predetermined time has elapsed, the controller 20 controls the first and the second. A fourth step 108 of turning on the first and second transistors 70 and 80 by applying a constant voltage to the transistors 70 and 80, and then determining whether a predetermined time (about 1 second) has elapsed. To 110), if a predetermined time elapsed in the fourth step, the control unit 20 cuts off the voltages applied to the first and second transistors 70 and 80 and the first and second transistors 70 ( 80) the fifth step 111 is turned off to prevent the leakage of the electromagnet in case of an electromagnet abnormality, and if the gas is sufficiently supplied after driving the electromagnet during initial ignition, the igniter is driven to perform ignition, Can be prevented.

Description

A method for controlling the initial ignition of the gas oven range

The present invention relates to a method for controlling the initial ignition of the cooktop burner of the gas oven, in particular

By constructing a separate transistor in the electromagnet drive circuit, the electromagnet breaks out in case of an electromagnet abnormality to prevent the leakage of gas.In case of initial ignition, if the gas is sufficiently supplied through the gas valve after the electromagnet is driven, the igniter is driven to perform ignition to fail. It relates to a control method for the initial ignition of the cooktop burner of the gas oven to prevent the fire.

In general, a thermocouple is heated by a spark in a gas oven to generate thermoelectric power. The thermoelectric power is applied to a magnetic power unit mounted in a cock of the gas oven, and the electromagnet is opened in a gas valve. It is supposed to maintain. 3 is a view illustrating a conventional cooktop burner ignition circuit operating as described above, wherein an ignition switch 10 for igniting the cooktop burner is connected to the control unit 20, and is applied by an applied voltage of the control unit 20. FIG. The igniter 30 and the electromagnet 40 which are switched and driven are comprised.

Therefore, when the ignition switch 10 of the cooktop burner to be used among the cooktop burners of the gas oven is turned on, the voltage applied by the control unit 20 becomes HIGH and the voltages applied to the cooktop burner are first and second. The switch of the igniter 30 and the electromagnet 40 of the selected cooktop burner are switched to be applied to the coil of the switch unit to start driving.

However, in the cooktop burner ignition circuit operated as described above, since the electromagnet 40 and the igniter 30 are simultaneously driven during initial ignition, a problem of ignition failure occurs, and the relay or the capacitor is cocked for a predetermined time by using the discharge time. Since only the electromagnet 40 serves to hold the electromagnet 40, when the driving circuit is defective, the electromagnet 40 is continuously held, causing a safety accident due to gas leakage.

The present invention is to solve the above problems, by configuring a separate transistor in the cock electromagnet drive circuit of the cooktop burner of the gas oven, to prevent the leakage of the gas by leaving the electromagnet when the electromagnet abnormality, the electromagnet drive at the time of initial ignition It is an object of the present invention to provide a cooktop burner control method of the gas oven, which is capable of preventing an initial ignition failure by driving an igniter when gas is sufficiently supplied through a gas valve.

In the present invention for achieving the above object, in the cooktop burner initial ignition control method of the gas oven, when the user turns on the ignition switch of the cooktop burner to be used, the controller drives the electromagnet, from the gas valve In the first step of determining whether more than 100㎳ of gas has been supplied, if more than 100㎳ of gas is supplied through the gas valve in the first step, the controller drives the igniter, and then, if the predetermined time has elapsed after driving the igniter, In the second step of determining, in the second step, the controller stops driving of the electromagnet and the igniter when a predetermined time elapses after the igniter is driven, and determines the voltage detected by the ignited cooktop burner. If the voltage is detected by the detection signal applied from the thermocouple in the third step, the control unit If a predetermined time has elapsed after determining that a predetermined time (about 20 seconds) has elapsed, the controller applies a predetermined voltage to the first and second transistors to turn on the first and second transistors, and then the predetermined time ( If the predetermined time elapsed in the fourth step and the predetermined time elapsed in the fourth step, the controller cuts off the voltage applied to the first and second transistors to turn off the first and second transistors. And a fifth step.

1 is a circuit diagram showing a cooktop burner ignition circuit according to the present invention;

2 is a flow chart showing a method for controlling the ignition of the cooktop burner of the gas oven according to the present invention;

3 is a circuit diagram showing a conventional cooktop burner ignition circuit.

* Description of the symbols for the main parts of the drawings *

10: ignition switch 20: control unit

30: igniter 40: electromagnet

50: first switch unit 60: second switch unit

70: first transistor 80: second transistor

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

1 is a circuit diagram illustrating a cooktop burner ignition circuit according to the present invention, in which an ignition switch 10 for igniting each cooktop burner is connected to a control unit 20, and is switched by an applied voltage of the control unit 20. The first and second switch units 50 and 60 are connected to the igniter 30 and the electromagnet 40.

On the other hand, it is connected to interlock with the second switch unit 60, the voltage applied from the control unit 20 through the first and second transistors 70, 80 is transformed into a-voltage to the second switch unit ( 60).

Therefore, the control unit 20 applies a voltage of about -12V to the second switch unit 60 to drive the electromagnet 40, and the applied voltage is applied to the coil to switch the electromagnet 40 switch to switch the electromagnet ( 40 is turned on, and when off, the electromagnet 40 is turned off by blocking the applied voltage from the controller 20.

On the other hand, when the control unit 20 cuts off the voltage applied to the second switch unit 60 to turn off the electromagnet 40, the switch of the second switch unit 60 is fused and the electromagnet 40 is turned off. If not, the control unit 20 applies a voltage of about 12V to the first and second transistors 70 and 80, and the applied voltage is about 12V through the first and second transistors 70 and 80. It is applied to the electromagnet to stop the driving of the electromagnet. In other words, since the potential becomes zero, the electromagnet is separated.

The operation and effects of the gas oven configured as described above will be described in detail with reference to the flowchart of FIG. 2.

First, when the user turns on the ignition switch 10 of the cooktop burner to be used (101), the control unit 20 drives the electromagnet 40 of the cooktop burner to open the corresponding gas valve (102), the opening When more than 100 판단 gas is supplied through the gas valve (103), the controller 20 drives the igniter 30 to ignite the corresponding cooktop burner. 104, it is then determined whether a predetermined time elapses after driving the igniter 30 (105).

On the other hand, the controller 20 stops the driving of the electromagnet 40 and the igniter 30 to maintain the ignition state after a predetermined time elapses after the driving of the igniter 30, the salt (106) By detecting the voltage, it is determined whether the voltage is detected in the cooktop burner ignited through the thermocouple applying the detection signal to the controller 20 (107).

Therefore, when the salt voltage of the predetermined level is detected by the detection signal applied from the thermocouple, the control unit 20 counts a predetermined time (about 20 seconds) preset in the control unit 20 to determine whether the predetermined time has elapsed. If time has elapsed (108), the control unit 20 applies a voltage to the first and second transistors 70, 80, and the applied voltage is + + by the first and second transistors 70, 80. The voltage is applied to the second switch unit 60 (109), and the controller 20 is the voltage applied to the first and second transistors 70, 80 applied for a predetermined time (about 1 second) If it is determined that the voltage is applied for a predetermined time (110), the control unit 20 blocks the voltage applied to the first and second transistors 70, 80 (111).

As described above, the present invention, when the electromagnet abnormality is separated to prevent the leakage of the gas, and during the initial ignition when the gas is sufficiently supplied after driving the electromagnet to drive the igniter to perform the ignition failure can be prevented.

Claims (1)

In the cooktop burner initial ignition control method of the gas oven, when the user turns on the ignition switch 10 of the cooktop burner part to be used, the control unit 20 drives the electromagnet 40, and it is 100 kW from the gas valve. In the first step of determining whether the above gas is supplied, if gas of 100 kPa or more is supplied through the gas valve in the first step, the controller 20 drives the igniter 30, and then the igniter 30 is driven. In the second step 104 and 105 to determine whether the set predetermined time has elapsed, and in the second step, if the predetermined time elapses after driving the igniter 30, the electromagnet 40 and the igniter ( If the voltage is detected by the detection signal applied from the thermocouple in the third step (106) (107), the third step of determining whether the voltage is detected in the ignited cooktop burner, the control unit 20 established If a predetermined time has elapsed by determining whether a predetermined predetermined time (about 20 seconds) has elapsed, the controller 20 applies a predetermined voltage to the first and second transistors 70 and 80 so that the first and second transistors ( 70) (80) is turned on, and then the fourth step (108 to 110) for determining whether the predetermined time (about 1 second) has elapsed, if the predetermined time predetermined in the fourth step has passed the control unit 20 Gas oven characterized in that it comprises a fifth step (111) for turning off the first and second transistors 70, 80 by cutting off the voltage applied to the first and second transistors 70, 80 Stove cooker burner initial ignition control method.