KR101732871B1 - The minimum amount of gas in the gas oven ignition control method - Google Patents

The minimum amount of gas in the gas oven ignition control method Download PDF

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Publication number
KR101732871B1
KR101732871B1 KR1020150164390A KR20150164390A KR101732871B1 KR 101732871 B1 KR101732871 B1 KR 101732871B1 KR 1020150164390 A KR1020150164390 A KR 1020150164390A KR 20150164390 A KR20150164390 A KR 20150164390A KR 101732871 B1 KR101732871 B1 KR 101732871B1
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KR
South Korea
Prior art keywords
ignition
gas
time
thermocouple
minimum
Prior art date
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KR1020150164390A
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Korean (ko)
Inventor
김태준
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린나이코리아 주식회사
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Priority to KR1020150164390A priority Critical patent/KR101732871B1/en
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Publication of KR101732871B1 publication Critical patent/KR101732871B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/12—Arrangement or mounting of control or safety devices
    • F24C3/126—Arrangement or mounting of control or safety devices on ranges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/82—Preventing flashback or blowback
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/005—Regulating fuel supply using electrical or electromechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/10—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
    • F23N5/105—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples using electrical or electromechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
    • F23N5/245—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electrical or electromechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/10—Arrangement or mounting of ignition devices

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Combustion (AREA)

Abstract

The present invention relates to a method of controlling a minimum gas flow rate of a gas range, and more particularly, to a method of controlling a gas flow rate of a gas range, the method comprising the steps of: Attempting ignition through the ignition device and simultaneously counting the time after the ignition attempt via the timer; Receiving an output signal of the thermocouple once per second when a first time elapses after an ignition attempt; Determining whether an output value of the thermocouple is greater than a predetermined ignition definite level; Ending the operation of the ignition device if the output value of the thermocouple is greater than a predetermined ignition confirmation level; The microcomputer compares the output value of the thermocouple with a predetermined ignition definite level to determine whether the output value of the thermocouple is greater than a predetermined ignition definite level If so, determining whether a second time has passed after the ignition attempt; And when the second time has not elapsed, returning to the step of receiving the output signal of the thermocouple, and if the second time has elapsed, releasing the minimum operating state of the gas supply amount regulating valve and supplying the gas at the maximum amount do.
Therefore, when the gas range is ignited, the gas supply amount control valve is operated to a minimum level before the ignition device is operated to block a part of the gas passage, thereby attempting to ignite at the minimum gas amount capable of ignition regardless of the position of the gas range knob. It is possible to protect the safety of the user from accidents such as fire and explosion which may occur in the re-ignition, and in particular, the reliability of the product itself and the quality of the product itself can be greatly improved.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a gas amount control method,

More particularly, the present invention relates to a method for controlling ignition of a minimum gas amount of a gas range, and more particularly, to a method for controlling a minimum gas amount of a gas range from an accident such as a fire or an explosion The present invention relates to a method for controlling ignition of a minimum amount of gas in a gas range.

Generally, a gas range refers to a cooking appliance that uses gas as fuel, a burner portion is formed on the upper surface, and a cooking container is placed on the burner portion to ignite food by igniting the cooking container.

However, in the conventional gas range, ignition is attempted at the maximum power (maximum gas amount) during ignition. When ignition is performed at the maximum gas amount during the ignition of the gas range, when the ignition fails, Gas will leak.

If the ignition fails while supplying the maximum amount of gas, the gas leaks through the openmost gas passage until the gas passage is shut off (that is, the gas is leaked), thereby causing a fire and an explosion There is a problem.

Korean Patent Publication No. 10-2012-0053581 (May 29, 2012)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems of the prior art, and it is an object of the present invention to provide a gas- It is possible to protect the safety of the user from accidents such as fire and explosion which may occur in re-ignition, and in particular, And it is an object of the present invention to provide a method for controlling ignition of a minimum amount of gas in a gas range that can greatly improve reliability.

According to an aspect of the present invention, there is provided a method for controlling a gas supply amount control apparatus, the method comprising: operating a gas supply amount control valve in a microcomputer when the ignition button of the gas range is turned on; Attempting ignition through the ignition device and simultaneously counting the time after the ignition attempt via the timer; Receiving an output signal of the thermocouple once per second when a first time elapses after an ignition attempt; Determining whether an output value of the thermocouple is greater than a predetermined ignition definite level; Ending the operation of the ignition device if the output value of the thermocouple is greater than a predetermined ignition confirmation level; And releasing the minimum operating state of the gas supply amount regulating valve and completing the ignition operation of the gas range.

If the output value of the thermocouple is smaller than the predetermined ignition determination level as a result of comparing the output value of the thermocouple with a predetermined ignition decision level, the microcomputer determines whether a second time has passed after the ignition attempt; And returning to the step of receiving the output signal of the thermocouple if the second time has not elapsed, and releasing the minimum operating state of the gas supply amount regulating valve when the second time has elapsed to supply the gas at the maximum amount .

Determining whether a third time has elapsed after the ignition is attempted in the microcomputer after the second time has elapsed and the minimum operating state of the gas supply amount control valve is released; And if the third time has not elapsed, returning to the step of receiving the output signal of the thermocouple, and if the third time has elapsed, determining that the ignition device is faulty and closing the safety valve to forcibly shut off the gas supply .

In addition, the microcomputer forcibly cuts off the gas supply, further comprises a step of notifying the occurrence of an ignition error due to the failure of the ignition device, or displaying a warning message.

In this case, the first time period is set to be 2 to 3 seconds, which is the minimum time during which the gas is supplied from the gas supply amount regulating valve to the burner, if the ignition device is normal.

Further, the second time is set to 4 to 6 seconds, which is a time during which the gas can be sufficiently ignited in the burner if the igniter is normally supplied while supplying a minimum amount of gas through the gas supply amount control valve.

The third time is set to 8 to 12 seconds, which is a time required for the ignition in the burner, if the ignition device is normal, while releasing the minimum operation of the gas supply amount control valve to supply the gas in a maximum amount. .

As described above, according to the gas amount ignition control method of the present invention, when the gas range is ignited, the gas supply amount control valve is operated to a minimum level before the ignition device is operated to block a part of the gas passage to ignite By attempting ignition with the minimum possible gas volume, it is possible to minimize the leakage of gas at ignition failure and to protect the safety of the user from accidents such as fire and explosion which may occur in re-ignition. In particular, The reliability can be greatly improved.

1 is a schematic block diagram of a gas range to which the method of the present invention is applied;
2 is a flow chart for explaining the method of the present invention.

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

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 1 is a schematic block diagram of a gas range to which the method of the present invention is applied, and FIG. 2 is a flow chart for explaining the method of the present invention.

According to the present invention,

(S1) of operating the gas supply amount regulating valve (3) at the microcomputer (1) to supply the gas in a minimum amount when the ignition button (2) of the gas range is turned on;

(S2) of attempting ignition through the ignition device (4) and simultaneously counting the time after the ignition attempt via the timer (5);

(S4) receiving an output signal of the thermocouple 6 once per second when the first time t1 after the ignition attempt has elapsed (S3);

(S5) judging whether the output value of the thermocouple 6 is higher than a predetermined ignition decision level;

(S6) of terminating the operation of the ignition device (4) if the output value of the thermocouple (6) is larger than the predetermined ignition definite level;

(S8) of releasing the minimum operating state of the gas supply amount control valve (S7) and completing the ignition operation of the gas range.

If the output value of the thermocouple 6 is smaller than the predetermined ignition decision level as a result of comparing the output value of the thermocouple 6 with the predetermined ignition decision level in the microcomputer 1 (S5)

(S9) determining whether a second time (t2) has elapsed after the ignition attempt;

If the second time t2 has not elapsed, the process returns to step S4 where the output signal of the thermocouple 6 is input. If the second time t2 has elapsed, the minimum operating state of the gas supply amount regulating valve 3 is released (S10) of supplying the gas in the maximum amount.

The step S11 of determining whether the third time t3 has elapsed after the ignition attempt in the microcomputer 1 after the second time t2 elapses and the minimum operating state of the gas supply amount regulating valve 3 is released ;

If the third time t3 has not elapsed, the process returns to step S4 in which the output signal of the thermocouple is input. If the third time t3 has elapsed, it is determined that the ignition device is faulty and the safety valve 7 is closed, (Step S12) for forcibly blocking the first and second optical fibers.

In addition, the microcomputer 1 forcibly cuts off the gas supply step S13 of notifying the occurrence of an ignition error due to a failure of the ignition device by means of the alarm 8 or the display unit 9 or by displaying an alarm sound. Is further performed.

At this time, the first time t1 is a minimum time during which the gas can be ignited in the burner if the ignition device 4 is in a normal state while supplying a minimum amount of gas through the gas supply amount control valve 3, Sec. ≪ / RTI >

The second time t2 is a time period during which the gas can be sufficiently ignited in the burner if the ignition device 4 is normal while supplying a minimum amount of gas through the gas supply amount regulating valve 3, Is set.

The third time t3 is the time required for the ignition to be properly performed in the burner if the ignition device 4 is normal while the minimum operation of the gas supply amount control valve 3 is released to supply the gas in the maximum amount , And 8 to 12 seconds.

The operation and effect of the minimum gas amount ignition control method of the gas range of the present invention having the above steps will be described as follows.

First, the gas range to which the present invention is applied basically operates the ignition device 4 by the operation of the knob of the ignition button 2 of the user, and has a function of automatically igniting for a maximum of 8 to 12 seconds by one operation In advance.

In this case, the ignition device 4 refers to an igniter, a pilot burner, etc., and the ignition button 2 knob is a conventional switch. When the ignition is determined, the gas supply amount control valve 3 is released, 2) Depending on knob adjustment, gas supply can be supplied from minimum to maximum.

The gas supply amount control valve is operated and released according to the power supply direction by the solenoid valve, and the operation or release state is controlled by the power supply It is a valve whose supply continues regardless of maintenance.

The gas supply amount control valve may be one or more, and the gas supply amount may be limited step by step.

In the micom 1 of the gas range to which the present invention is applied, when the ignition button 2 of the gas range is turned by the user, the gas supply amount control valve 3, which has conventionally operated the maximum, So that the gas supplied to the burner is supplied in a minimum amount (S1).

Subsequently, the burner is tried to be ignited through the ignition device 4, and at the same time, the time after the ignition attempt is started to count through the timer 5 (S2).

After the ignition attempt, the microcomputer 1 receives the output signal of the thermocouple 6 once per second (S4) if the time counted by the timer 5 has passed the first time t1 (S3) It is determined whether the output value of the thermocouple 6 is larger than a predetermined ignition decision level (S5).

At this time, the first time t1 is a minimum time during which the gas can be ignited in the burner if the ignition device 4 is in a normal state while supplying a minimum amount of gas through the gas supply amount control valve 3, Sec, preferably, it is set to 2 seconds.

On the other hand, if the output value of the thermocouple 6 is larger than the predetermined ignition definite level (Yes in S5) as a result of comparing the output value of the current thermocouple 6 with the predetermined ignition definite level in the microcomputer 1, (S6), the minimum operating state of the gas supply amount control valve 3 is released (S7), and the ignition operation of the gas range is completed ( S8).

However, if the output value of the thermocouple 6 is smaller than the predetermined ignition decision level (No in S5) as a result of comparing the output value of the thermocouple 6 with the predetermined ignition decision level in S5, It is determined whether 2 hours (t2) has elapsed (S9).

At this time, the second time t2 supplies a minimum amount of gas to the burner through the gas supply amount regulating valve 3, and if the igniter 4 is normal, To 6 seconds, preferably 5 seconds.

If it is determined that the second time t2 has elapsed after the ignition attempt in step S9 by the microcomputer 1, the second time t2 has not elapsed (No in step S9), the output of the thermocouple 6 The process returns to step S4 in which a signal is input, and the subsequent steps are repeated.

However, if the second time t2 has elapsed (Yes in S9; that is, if the burner is not normally ignited until the second time t2 elapses after the ignition attempt), the gas supply amount control valve 3 The minimum operating state is released so that the amount of gas supplied to the burner through the gas supply control valve 3 is maximized (S10).

In the microcomputer 1 in which the minimum operating state of the gas supply amount regulating valve 3 is released after the second time t2 elapses and the maximum gas amount is supplied to the burner, the third time t3 after the ignition attempt has elapsed (S11).

At this time, the third time (t3) is such that the minimum operation of the gas supply amount regulating valve 3 is released to supply the gas to the burner in a maximum amount, and if the ignition device 4 is normal, The maximum time is set to 8 to 12 seconds, preferably to 10 seconds.

If it is determined in step S11 that the third time t3 has elapsed after the ignition attempt has been made in the microcomputer 1, if the third time t3 has not elapsed (No in step S11), the thermocouple output signal is input The process returns to the receiving step S4 and the subsequent steps are repeated.

However, if the third time t3 has elapsed (Yes in S11; that is, if the burner is not normally ignited until the third time t3 elapses after the ignition attempt), the ignition device 4 has failed And the safety valve (7) provided separately from the gas supply amount control valve (3) is closed to forcibly shut off the gas supply. Therefore, the leakage amount of the gas can be minimized when the ignition failure occurs, The user can be protected from accidents such as fire and explosion.

In addition, the microcomputer 1 closes the safety valve 7 to forcibly cut off gas supplied to the burner for ignition, and then generates an alarm sound through the alarm unit 8 or the display unit 9 (S13), the user can accurately recognize that the ignition error is due to the failure of the ignition device 4, and take necessary measures such as a service request promptly.

Although the preferred embodiments of the present invention have been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. Which will be apparent to those skilled in the art.

1: Microcomputer
2: Ignition button
3: Gas supply regulating valve
4: Ignition device
5: Timer
6: Thermocouple
7: Safety valve
8: Alarm
9:

Claims (7)

When the ignition button of the gas range is turned, the microcomputer operates the gas supply control valve to a minimum to supply the gas in a minimum amount;
Attempting ignition through the ignition device and simultaneously counting the time after the ignition attempt via the timer;
Receiving an output signal of the thermocouple once per second when a first time elapses after an ignition attempt; Determining whether an output value of the thermocouple is greater than a predetermined ignition definite level;
Ending the operation of the ignition device if the output value of the thermocouple is greater than a predetermined ignition confirmation level;
Releasing the minimum operating state of the gas supply amount regulating valve and completing the ignition operation of the gas range,
If the output value of the thermocouple is smaller than the predetermined ignition decision level as a result of comparing the output value of the thermocouple with the predetermined ignition decision level in the microcomputer,
Determining whether a second time has passed after an ignition attempt;
And when the second time has not elapsed, returning to the step of receiving the output signal of the thermocouple, and if the second time has elapsed, releasing the minimum operating state of the gas supply amount regulating valve and supplying the gas at the maximum amount A minimum gas amount ignition control method of the gas range.
delete The method according to claim 1,
Determining whether a third time has elapsed after the ignition attempt in the microcomputer that has released the minimum operating state of the gas supply amount regulating valve after the second time has elapsed;
And if the third time has not elapsed, returning to the step of receiving the output signal of the thermocouple, and if the third time has elapsed, determining that the ignition device is faulty and closing the safety valve to forcibly shut off the gas supply Wherein the ignition control method comprises:
The method of claim 3,
Wherein the microcomputer forcibly cuts off the gas supply, further comprising the step of notifying the occurrence of an ignition error due to the failure of the ignition device or displaying a warning by a character.
The method according to claim 1,
The first time may be,
Wherein the minimum amount of gas to be supplied through the gas supply amount control valve is set to be 2 to 3 seconds, which is the minimum time for ignition in the burner if the ignition device is normal.
The method according to claim 1,
The second time,
Wherein the minimum amount of gas is supplied through the gas supply amount regulating valve and is set to 4 to 6 seconds when the ignition device is normal and the ignition can be sufficiently performed in the burner.
The method of claim 3,
The third time,
The minimum gas amount of the gas range is set to 8 to 12 seconds, which is a time required for ignition in the burner if the ignition device is normally operated to release the minimum operation of the gas supply amount control valve to supply the maximum amount of gas. Ignition control method.
KR1020150164390A 2015-11-24 2015-11-24 The minimum amount of gas in the gas oven ignition control method KR101732871B1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012157425A (en) 2011-01-31 2012-08-23 Harman Co Ltd Grill
JP2013190121A (en) * 2012-03-13 2013-09-26 Rinnai Corp Gas combustion device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012157425A (en) 2011-01-31 2012-08-23 Harman Co Ltd Grill
JP2013190121A (en) * 2012-03-13 2013-09-26 Rinnai Corp Gas combustion device

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