KR100459132B1 - Circuit for Controlling Burner of the Gas Oven Range - Google Patents

Abstract

The present invention relates to a burner control circuit of a gas oven range for simplifying the circuit configuration of solenoid valve control and constant voltage control. The burner control circuit of a gas oven range includes a control signal according to a user's selection or a preset algorithm. A microcomputer for outputting, a first transistor Q11 that is turned on / off by receiving a control signal of the microcomputer as a base, and is turned on / off by receiving a control signal of the microcomputer as a base The second transistor Q12 connected to the collector of the first transistor Q11, the first solenoid valve SV1 operating in accordance with on / off of the first and second transistors Q11 and Q12, and the microcomputer A third transistor Q13 that is turned on / off by receiving a control signal of a base, a second solenoid valve SV2 that operates according to on / off of the third transistor Q13, and the first and Since the second solenoid valves SV1 and SV2 are configured to include a power supply unit for supplying a constant voltage, the burner control circuit can be simplified and the production cost can be reduced by eliminating all the transistors controlling the constant voltage output.

Description

Circuit for Controlling Burner of the Gas Oven Range

The present invention relates to a gas oven range, and more particularly to a burner control circuit of the gas oven range.

In general, a gas oven range includes a top burner part, an oven part, and a grill part integrally formed from the top to select an appropriate heating part among these three heating parts according to a cooking object or type of cooking. And cooking is performed by using a heating means of a burner or a heater according to the selected heating unit.

Hereinafter, a control circuit according to the related art of a burner, which is one of heating means of a gas oven range, will be described with reference to FIG. 1.

As shown, the burner control circuit of the gas oven range according to the prior art receives a microcomputer 20 for outputting a control signal according to a user's selection or a predetermined algorithm, and a control signal of the microcomputer 20 as a base. The third transistor Q3 to be turned on / off, the first solenoid valve SV1 operating according to the on / off of the third transistor Q3, and the control signal of the microcomputer 20 are turned on as a base. The fourth transistor Q4 to be turned on / off, the second solenoid valve SV2 operating according to the on / off of the fourth transistor Q4, a power supply unit 10 for outputting a constant voltage, and the power supply unit 10 First and second transistors Q1 and Q2 connected to an output terminal of the first and second solenoids SV1 and SV2 and turned on / off according to a control signal of the microcomputer 20 so that the constant voltage is applied to the first and second solenoids SV1 and SV2. It is configured by.

Referring to the operation of the burner control circuit of the gas oven range according to the prior art configured as described above, first, the microcomputer 20 generates a control signal for igniting (On) / off (Off) the burner according to a user's selection or a preset algorithm. Outputs simultaneously through output terminals O1, O2 and O3.

When the microcomputer 20 outputs a high control signal for igniting a burner, the second transistor Q2 is turned on according to the high signal output through the output terminal O1 and then the first transistor ( Q1) turns on.

When the first and second transistors Q1 and Q2 are sequentially turned on, the constant voltage V1 supplied from the power supply unit 10 is output.

On the other hand, the third transistor Q3 and the fourth transistor Q4 are turned on according to the high signals output through the output terminals O2 and O3 of the microcomputer 20.

When all of the first to fourth transistors Q1, Q2, Q3, and Q4 are turned on, the first and second solenoid valves SV1 and SV2 receive the constant voltage V1 to be opened.

As the first and second solenoid valves SV1 and SV2 are simultaneously opened, gas is introduced and ignition occurs.

In this case, since the first and second diodes D1 and D2 connected to the first and second solenoid valves SV1 and SV2 are respectively supplied with a separate 5V voltage, the input terminals IN1 and IN2 of the microcomputer 20 are connected to each other. A low signal is input, and through this, the microcomputer 20 recognizes that the states of the third and fourth transistors Q3 and Q4 that control the first and second solenoid valves SV1 and S2 are normal. .

On the other hand, when the microcomputer 20 outputs a low control signal for extinguishing a burner, a low signal is output through the output terminal O1, so that the first and second transistors Q1 and Q2 are turned off to supply a constant voltage V1. To block.

At the same time, a low signal is output through the output terminals O2 and O3, and the third and fourth transistors Q3 and Q4 are turned off to close the first and second solenoid valves SV1 and SV2 so that the gas supply is cut off to burner. To digest.

At this time, a high signal is input through the input terminals IN1 and IN2 of the microcomputer 20.

As described above, when the third and fourth transistors Q3 and Q4 operate normally, when the microcomputer 20 outputs a high signal through the output terminals O2 and O3, a low signal is input to the input terminals IN1 and IN2. When a low signal is output through the terminals O2 and O3, a high signal is input to the input terminals IN1 and IN2.

However, when the third and fourth transistors Q3 and Q4 do not operate normally, that is, when they are damaged or defective, the microcomputer 20 does not input the normal signal to the input terminals IN1 and IN2 of the microcomputer 20. By recognizing and outputting a low signal through the output terminal O1, the output of the constant voltage V1 is automatically cut off to control the first and second solenoid valves SV1 and SV2 to be closed.

The burner control circuit of the gas oven range according to the prior art described above has the following problems.

First, since the circuit for controlling the constant voltage V1 applied to the solenoid valve is composed of two or more transistors, the circuit configuration is relatively complicated.

Second, many transistors, which are required for solenoid valve control and constant voltage control, contributed to the price increase.

Accordingly, an object of the present invention is to provide a burner control circuit of a gas oven range for simplifying the circuit configuration of solenoid valve control and constant voltage control.

1 is a view showing a burner control circuit of a gas oven range according to the prior art;

2 is a view showing a burner control circuit of the gas oven range according to the present invention.

Explanation of symbols for main parts of the drawings

10: power supply unit 20: microcomputer

SV1, SV2: first and second solenoid valve

Q11, Q12, Q13: first, second, third transistor

In order to achieve the above object, the burner control circuit of the gas oven range according to the present invention is a burner control circuit of the gas oven range, the microcomputer outputting a control signal according to a user's selection or a preset algorithm, the control signal of the microcomputer Is inputted as a base to the first transistor Q11 that is turned on / off, and the control signal of the microcomputer is input to the base as on / off and is a collector of the first transistor Q11. The second transistor Q12 coupled to the first transistor, the first solenoid valve SV1 operating according to the on / off of the first and second transistors Q11 and Q12, and the control signal of the microcomputer are turned on as a base. Constant voltage such that the third transistor Q13 to be turned on / off, the second solenoid valve SV2 operating according to the on / off of the third transistor Q13, and the first and second solenoid valves SV1 and SV2 are operated. of It is configured to include a power supply for supplying has its features.

Other objects, features and advantages of the present invention will become apparent from the following detailed description of embodiments taken in conjunction with the accompanying drawings.

Hereinafter, a burner control circuit of a gas oven range according to the present invention will be described with reference to the accompanying drawings.

The present invention is the same configuration of the first, second solenoids (SV1, SV2), the power supply unit 10 and the microcomputer 20 as described above, but the connection configuration of the control circuit for controlling the ignition / fire extinguishing operation of the burner This is different.

As shown, the burner control circuit of the gas oven range according to the present invention is a microcomputer 20 for outputting a control signal according to a user's selection or a predetermined algorithm, the control signal of the microcomputer 20 to the base (Base) A first transistor Q11 that is received on / off is input, and is turned on / off based on a control signal of the microcomputer 20 and connected to a collector of the first transistor Q11. The control signal of the second transistor Q12, the first solenoid valve SV1 operating in accordance with the on / off of the first and second transistors Q11 and Q12, and the microcomputer 20 is turned on. Constant voltage such that the third transistor Q13 to be turned on / off, the second solenoid valve SV2 operating according to the on / off of the third transistor Q13, and the first and second solenoid valves SV1 and SV2 are operated. It consists of a power supply unit 10 for supplying.

Looking at the operation of the burner control circuit of the gas oven range according to the present invention configured as described above, the microcomputer 20 outputs a control signal for igniting (On) / off (Off) the burner through the output terminals O1, O2, O3 do.

Here, the power supply unit 10 outputs a constant voltage V1 and a constant voltage V1 output terminal is connected to the first and second solenoid valves SV1 and SV2.

First, when the microcomputer 20 outputs a high control signal for igniting a burner, the first and second transistors Q11 and Q12 having respective bases connected to the output terminals O1 and O2 and the third having the base connected to the output terminal O3, respectively. Transistor Q13 is turned on to open first and second solenoid valves SV1 and SV2 simultaneously through constant voltage V1.

When the first and second solenoid valves SV1 and SV2 are open at the same time, gas is introduced and ignition occurs.

At this time, a low signal is input through the input terminals IN1 and IN2 of the microcomputer 20.

Meanwhile, when the microcomputer 20 outputs a row control signal for extinguishing a burner through the output terminals O1, O2, and O3, the first to third transistors Q11, Q12, and Q13 are turned off, and the first and second solenoids are turned off. Fire is extinguished by closing the valves SV1 and SV2.

In addition, a high signal is input through the input terminals IN1 and IN2 of the microcomputer 20.

In addition, the microcomputer 20 detects an operating state of the first to third transistors Q11, Q12, and Q13 according to a signal input through the input terminals IN1 and IN2.

In the present invention, when the first transistor Q11 is short, the first solenoid valve SV1 is opened and closed according to the on / off operation of the second transistor Q12 and the second transistor Q12. ) Is opened and closed according to the on / off operation of the first transistor Q11.

In addition, when the third transistor Q13 is defective, the first solenoid valve SV1 is controlled to be closed by operating the first or second transistors Q11 and Q12, and the first and second transistors If both Q11 and Q12 are defective, the second solenoid valve SV2 is controlled to close the second solenoid valve SV2 through the operation of the third transistor Q13 to prevent gas leakage.

The burner control circuit of the gas oven range according to the present invention described above has the following effects.

First, by eliminating all transistors controlling the constant voltage output, the burner control circuit can be simplified and the production cost can be reduced.

Second, there is an effect that can improve the product reliability by maintaining the stability of the valve control.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention.

Therefore, the technical scope of the present invention should not be limited to the contents described in the embodiments, but should be defined by the claims.

Claims (1)

In the burner control circuit of the gas oven range, Microcomputer to output control signal according to user's choice or preset algorithm, A first transistor Q11 that is turned on / off by receiving the control signal of the microcomputer as a base; A second transistor Q12 that is turned on / off by receiving the control signal of the microcomputer as a base and is connected to a collector of the first transistor Q11; A first solenoid valve SV1 operating according to on / off of the first and second transistors Q11 and Q12, A third transistor Q13 that is turned on / off by receiving a control signal of the microcomputer as a base; A second solenoid valve SV2 operating according to on / off of the third transistor Q13, And a power supply unit for supplying a constant voltage to operate the first and second solenoid valves SV1 and SV2.