KR20000032152A - Method of controlling ignition gas pressure of gas boiler - Google Patents

Method of controlling ignition gas pressure of gas boiler Download PDF

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Publication number
KR20000032152A
KR20000032152A KR1019980048542A KR19980048542A KR20000032152A KR 20000032152 A KR20000032152 A KR 20000032152A KR 1019980048542 A KR1019980048542 A KR 1019980048542A KR 19980048542 A KR19980048542 A KR 19980048542A KR 20000032152 A KR20000032152 A KR 20000032152A
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KR
South Korea
Prior art keywords
ignition
gas
time
rpm
gas pressure
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KR1019980048542A
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Korean (ko)
Inventor
백성학
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전주범
대우전자 주식회사
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Priority to KR1019980048542A priority Critical patent/KR20000032152A/en
Publication of KR20000032152A publication Critical patent/KR20000032152A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/002—Gaseous fuel
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/20—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays
    • F23N5/203—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays using electronic means

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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

PURPOSE: A method is provided to perform the normal ignition stroke by controlling the ignition gas pressure for the external conditions. CONSTITUTION: A gas boiler is controlled by the steps of: starting a pre-purge mode of a ventilating fan if the combustion stroke is began and deciding if the RPM of the ventilating fan is normal through signals from an RPM detecting unit; driving an ignition transformer after opening and closing a gas valve is the RPM is normal and deciding if the ignition time passes the set ignition time; deciding whether the count value of delay time is larger than the set value if the ignition time passes the set time; and changing the ignition gas pressure if the count value is larger than the set range.

Description

가스보일러의 착화가스압 제어방법 (A method for adjusting the pressure of gas inflowed in to a boiler)A method for adjusting the pressure of gas inflowed in to a boiler

본 발명은 가스보일러 제어방법에 관한 것으로, 더욱 상세하게는 점화시 착화시간을 감지하여 이 착화시간에 따라 착화가스압을 외부조건에 맞게 변동제어하므로서 정상적인 착화행정을 이룰 수 있도록 한 가스보일러의 착화가스압 제어방법에 관한 것이다.The present invention relates to a gas boiler control method, and more particularly, to detect the ignition time during ignition and to control the ignition gas pressure according to external conditions according to the ignition time to achieve a normal ignition stroke. It relates to a control method.

일반적으로, 가스보일러는 액화석유가스(LPG)나 액화천연가스(LNG) 또는 도시가스를 내부에서 연소시키고, 이 연소과정에서 발생되는 연소열을 이용하여 물을 가열한 후, 가열된 물을 순환펌프를 통해 실내의 난방배관으로 순환시켜 실내를 난방하거나 목용탕 또는 주방으로 공급하는 장치이다.In general, a gas boiler burns liquefied petroleum gas (LPG), liquefied natural gas (LNG), or city gas inside, heats water using combustion heat generated during the combustion process, and then heats the circulated pump. It is a device that circulates through the heating pipe in the room and heats the room or supplies it to the bath or kitchen.

도 3은 상기와 같이 동작하는 가스보일러의 내부구성을 나타낸 정면도로, 본체(1)의 내측에는 가스의 연소열을 이용하여 난방수를 가열하는 연소실(10)이 형성되어 있는데, 이 연소실(10)의 저부에는 유입되는 가스를 연소시키는 버너(11)가 장착되어 있고, 버너(11)의 상부에는 가스의 연소시 발생되는 연소열을 이용하여 난방수를 가열하는 주열교환기(12)가 장착되어 있다.FIG. 3 is a front view showing the internal structure of the gas boiler operating as described above. Inside the main body 1, a combustion chamber 10 for heating heating water using combustion heat of gas is formed. At the bottom of the burner is mounted a burner 11 for burning the incoming gas, and at the top of the burner 11 is equipped with a main heat exchanger 12 for heating the heating water using the heat of combustion generated during combustion of the gas.

한편, 본체(1)의 상부에는 가스의 연소에 필요한 공기를 흡입하는 급기구(2)와 연소실(10)의 배기가스를 외부로 배출하는 배기구(3)가 각각 형성되어 있으며, 급기구(2)를 통해 흡입된 공기는 송풍팬(20)에 의해 연소실(10)내로 공급된다.On the other hand, the upper part of the main body 1 is provided with an air supply port 2 for sucking air necessary for combustion of gas and an exhaust port 3 for exhausting the exhaust gas of the combustion chamber 10 to the outside, respectively. Air sucked through) is supplied into the combustion chamber 10 by the blowing fan 20.

또한, 버너(11)로 공급되는 가스를 점화시키기 위해 필요한 고전압을 발생하는 점화트랜스(30)가 본체(1)의 내측 배면에 고정되어 있는데, 이 점화트랜스(30)에서 발생된 고전압은 연소실(10)의 일측면에 고정되어 있는 점화플러그(31)로 공급된다.In addition, an ignition transformer 30 generating a high voltage necessary for igniting the gas supplied to the burner 11 is fixed to the inner rear surface of the main body 1, and the high voltage generated in the ignition transformer 30 is a combustion chamber ( It is supplied to the spark plug 31 fixed to one side of 10).

한편, 외부의 가스를 버너(11)로 공급하는 가스공급관(4)의 소정부위에는 공급되는 가스량을 제어하는 가스밸브(40)가 장착되어 있으며, 상기 주열교환기(12)에서 가열된 난방수는 보조열교환기(50)로 공급된다. 이 보조열교환기(50)는 직수공급관(5)을 통해 유입되는 직수를 열교환시켜 온수로 변환시킨다.On the other hand, a predetermined portion of the gas supply pipe 4 for supplying the external gas to the burner 11 is equipped with a gas valve 40 for controlling the amount of gas supplied, the heating water heated in the main heat exchanger 12 It is supplied to the auxiliary heat exchanger (50). The auxiliary heat exchanger 50 converts the direct water introduced through the direct water supply pipe 5 into hot water.

또한, 보조열교환기(50)로 공급된 난방수와 직수는 순환펌프(60)의 구동에 따라 난방수 공급관(6)을 통해 실내의 난방배관으로 공급되거나 열교환되어 온수 공급관(7)을 통해 목용탕이나 주방으로 공급되고, 실내의 난방배관을 통과한 난방수는 난방수 환수관(8)을 통해 물탱크(70)로 환수되는 데, 이러한 모든 동작은 제어회로부(9)에 의해 제어되는 것이다.In addition, the heating water and the direct water supplied to the auxiliary heat exchanger (50) is supplied to the heating pipe of the room through the heating water supply pipe (6) or heat exchanged according to the operation of the circulation pump (60) to heat through the hot water supply pipe (7). The heating water supplied to the molten metal or the kitchen and passed through the heating pipe in the room is returned to the water tank 70 through the heating water return pipe 8, and all these operations are controlled by the control circuit unit 9. .

이와같이 구성된 가스보일러는 사용자가 난방수의 온도를 설정하면 주열교환기(12)의 배출구측에 장착된 온도검출센서(80)에서 검출되는 난방수의 온도에 따라 가스밸브(40)의 개방정도와 송풍팬(20)의 회전속도가 가변되어 난방수의 온도를 일정하게 유지시키게 된다.The gas boiler configured as described above opens and blows the gas valve 40 in accordance with the temperature of the heating water detected by the temperature detection sensor 80 mounted on the outlet side of the main heat exchanger when the user sets the temperature of the heating water. The rotation speed of the fan 20 is variable to keep the temperature of the heating water constant.

한편, 상기와 같이 구성되고 작동되는 가스보일러 점화시의 착화행정은 보일러가 작동되어 연소행정을 시작하게 되면, 송풍팬(20)이 프리퍼지를 실시하고 이 과정에서 송풍팬(20)의 회전수 즉 RPM이 정상이면 가스밸브(40)를 개폐하므로서 착화행정을 실시하게 된다.On the other hand, the ignition stroke during the ignition of the gas boiler constructed and operated as described above, when the boiler starts to operate the combustion stroke, the blowing fan 20 performs pre-purging and the rotation speed of the blowing fan 20 in this process That is, if the RPM is normal, the ignition stroke is performed by opening and closing the gas valve 40.

그러나, 상기와 같은 착화행정시 착화가스압은 항상 일정하게 공급되도록 구성되어 있어 가스밀도가 작아지는 겨울과 가스밀도가 커지는 여름의 경우 즉, 가스밀도가 커지는 경우는 착화시 가스밀도가 작은 경우 보다 착화시간이 길어지게 된다.However, the ignition gas pressure is configured to be constantly supplied during the ignition administration as described above, so that the ignition gas is smaller in winter when the gas density decreases and in the summer when the gas density increases, that is, when the gas density increases. It will take longer.

따라서, 상기와 같은 일정한 착화가스압으로는 외부조건에 따라 정상적인 착화행정이 이루어지지 못하는 문제점이 있다.Therefore, there is a problem that the normal ignition stroke is not made according to external conditions with the constant ignition gas pressure as described above.

이에 본 발명은 상기와 같은 문제점을 해결하기 위해 발명된 것으로, 점화시 착화시간을 감지하여 이 착화시간에 따라 외부조건을 판단하여 착화가스압을 외부조건에 맞게 변동제어하므로서, 정상적인 착화행정을 이룰 수 있도록 한 가스보일러의 착화가스압 제어방법을 제공하는 것을 그 목적으로 한다.Accordingly, the present invention has been invented to solve the above problems, by detecting the ignition time during ignition to determine the external conditions according to the ignition time to control the ignition gas pressure to the external conditions, thereby achieving a normal ignition administration It is an object of the present invention to provide a method for controlling the ignition gas pressure of a gas boiler.

상기와 같은 목적을 달성하기 위하여 본 발명은, 가스보일러의 제어방법에 있어서, 연소행정이 시작되면 제어부는 송풍팬의 프리퍼지를 실시하며 RPM 검출부를 통해 인가되는 검출신호를 통해 송풍팬의 RPM수가 정상인가를 판단하는 제 1 단계; 상기 송풍팬의 RPM수가 정상이면 제어부는 가스밸브를 개폐하고 점화트랜스를 구동하며 점화트랜스에 의해 버너가 착화되었나를 판단하는 제 2 단계; 상기 제2단계에서 착화가 이루어졌으면 제어부는 착화시간이 설정된 착화시간을 경과하였나를 판단하는 제 3 단계; 상기 제3단계에서 착화시간이 설정된 착화시간을 경과하였으면 제어부는 지연시간을 카운트 업, 다운하여 카운트값(총지연시간)이 설정시간 보다 큰가를 판단하는 제 4 단계; 상기 제4단계에서 카운트값이 설정시간 보다 큰면 제어부는 착화가스압을 변동하는 제 5 단계를 구비한 것을 특징으로 한다.In order to achieve the above object, the present invention, in the gas boiler control method, when the combustion stroke is started, the control unit performs the pre-purging of the blowing fan and the RPM number of the blowing fan through the detection signal applied through the RPM detection unit A first step of determining whether it is normal; A second step of, if the RPM number of the blower fan is normal, the controller opens and closes the gas valve, drives the ignition transformer, and determines whether the burner is ignited by the ignition transformer; A third step of determining whether the ignition time has elapsed when the ignition time has been set in the second step; A fourth step of determining whether the count value (total delay time) is greater than the set time by counting up and down the delay time when the ignition time is set in the third step; If the count value is greater than the set time in the fourth step, the control unit has a fifth step of varying the ignition gas pressure.

도 1 은 본 발명이 적용되는 가스보일러의 착화가스압 제어장치를 나타낸 블록도,1 is a block diagram showing an apparatus for controlling ignition gas pressure of a gas boiler to which the present invention is applied;

도 2 는 본 발명에 따른 가스보일러의 착화가스압 제어방법을 나타낸 흐름도,2 is a flowchart illustrating a method for controlling ignition gas pressure of a gas boiler according to the present invention;

도 3 은 일반적인 가스보일러의 내부구성을 설명하기 위한 도면,3 is a view for explaining the internal configuration of a typical gas boiler,

도면의 주요부분에 대한 부호의 설명Explanation of symbols for main parts of the drawings

100 : RPM 검출부 110 : 염전압 검출부100: RPM detection unit 110: salt voltage detection unit

120 : 제어부 130 : 송풍팬120: control unit 130: blowing fan

140 : 가스밸브 150 : 점화트랜스140: gas valve 150: ignition transformer

이하, 본 발명의 바람직한 일실시예를 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명이 적용되는 가스보일러의 착화가스압 제어장치를 나타낸 블록도로서, 송풍팬(130)의 RPM을 검출하는 RPM 검출부(100)와 버너(11)의 점화 및 소화상태를 검출하는 염전압 검출부(110)가 제어부(120)에 접속되어 있으며, 또한 연소용 공기를 공급하는 송풍팬(130)과 가스량을 조절하는 가스밸브(140) 및 착화를 위해 고전압을 발생하는 점화트랜스(150)가 각각 제어부(120)의 제어를 받도록 접속되어 있다.1 is a block diagram showing an apparatus for controlling ignition gas pressure of a gas boiler to which the present invention is applied, and a salt for detecting an ignition and extinguishing state of an RPM detector 100 and a burner 11 for detecting an RPM of a blower fan 130. The voltage detection unit 110 is connected to the control unit 120, the blower fan 130 for supplying combustion air, the gas valve 140 for adjusting the gas amount and the ignition transformer 150 for generating a high voltage for ignition Are connected to be controlled by the control unit 120, respectively.

다음에는 상기와 같이 구성된 제어장치에 적용되는 본 발명에 따른 가스보일러의 착화가스압 제어방법을 도 2를 참조하여 상세히 설명한다.Next, the method for controlling the ignition gas pressure of the gas boiler according to the present invention applied to the control device configured as described above will be described in detail with reference to FIG. 2.

도 2는 본 발명에 따른 가스보일러의 착화가스압 제어방법을 나타낸 흐름도로, 보일러의 연소행정이 시작되면 제어부(120)는 송풍팬(130)의 프리퍼지를 실시하고, 이어 RPM 검출부(110)를 통해 인가되는 검출신호를 통해 송풍팬(130)의 RPM수가 정상적으로 출력되는 지를 판단하게 된다(101 내지 102).2 is a flowchart illustrating a method for controlling the ignition gas pressure of the gas boiler according to the present invention. When the combustion stroke of the boiler is started, the control unit 120 performs prepurging of the blower fan 130, and then the RPM detection unit 110. Through the detection signal applied through it is determined whether the RPM number of the blowing fan 130 is normally output (101 to 102).

상기 송풍팬(130)의 RPM수가 정상으로 출력되면 제어부(120)는 가스밸브(140)를 제어하여 버너(11)로 가스를 공급하며, 또한 점화트랜스(150)를 제어하여 점화트랜스(150)에서 고전압을 발생시켜 버너(11)를 착화시는 착화행정을 실시하며(103), 제어부(120)는 착화행정에 의해 착화가 완료되었나를 판단하게 되는 데, 이는 버너(11)의 불꽃상태를 감지하는 염전압 검출부(110)를 통해 인가되는 검출신호를 통해 판단하게 된다(104).When the RPM number of the blower fan 130 is normally output, the controller 120 controls the gas valve 140 to supply gas to the burner 11, and also controls the ignition transformer 150 to control the ignition transformer 150. When the burner 11 is ignited by generating a high voltage at (103), the ignition stroke is performed (103), and the control unit 120 determines whether the ignition is completed by the ignition stroke, which indicates the flame state of the burner 11. It is determined through the detection signal applied through the salt voltage detection unit 110 to detect (104).

상기의 판단에서 착화가 이루어졌으면 제어부(120)는 착화시간이 설정된 착화시간을 경과하였나를 판단하며, 이는 점화트랜스(150)를 제어한 후에 염전압 검출부(110)를 통해 검출신호가 최초 인가되는 시간을 제어부(120)가 카운트하므로서 판단할 수 있는 것이다(105).If the ignition has been made in the above determination, the control unit 120 determines whether the ignition time has elapsed, and the ignition time is controlled. This is because the detection signal is first applied through the salt voltage detection unit 110 after controlling the ignition transformer 150. The controller 120 may determine the time by counting the time (105).

상기의 판단에서 착화시간이 설정된 착화시간을 경과하였으면, 제어부(120)는 경과시간을 판단하기 위해 착화시간 및 설정시간을 상호 카운트 업, 다운하여(106), 카운트값이 설정시간 보다 큰가를 판단하게 되는 데, 이는 착화에 걸린 시간과 설정시간을 비교하여 총지연시간을 판단하게 되는 것이며, 이에 따라 착화시간이 설정시간 보다 지연되었으면, 제어부(120)는 가스밸브(140)를 제어하여 착화가스압을 변동제어 하게 되는 것이다(107 내지 108).If the ignition time has elapsed in the above determination, the control unit 120 counts up and down the ignition time and the setting time to each other to determine the elapsed time (106), and determines whether the count value is greater than the setting time. This is to determine the total delay time by comparing the ignition time and the set time, accordingly, if the ignition time is delayed than the set time, the control unit 120 controls the gas valve 140 to control the ignition gas pressure It is to control the variation (107 to 108).

상기와 같이 본 발명은, 점화시 착화시간을 감지하여 이 착화시간에 따라 외부조건을 판단하여 착화가스압을 외부조건에 맞게 변동제어하므로서, 항상 정상적인 착화행정을 이룰 수 있는 효과를 발휘하게 된다.As described above, the present invention detects the ignition time during ignition, determines the external condition according to the ignition time, and controls the ignition gas pressure according to the external condition, thereby achieving the effect of always achieving a normal ignition stroke.

본 발명은 도면에 도시된 일실시예를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 당해 기술분야에 통상의 지식을 지닌 자라면 이로부터 다양한 변형 및 균등한 타실시예가 가능하다는 점을 이해할 것이다. 따라서, 본 발명의 진정한 기술적 보호범위는 첨부된 특허청구범위에 의해서만 정해져야 할 것이다.Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be defined only by the appended claims.

Claims (1)

가스보일러의 제어방법에 있어서, 연소행정이 시작되면 제어부(120)는 송풍팬(130)의 프리퍼지를 실시하며 RPM 검출부(100)를 통해 인가되는 검출신호를 통해 송풍팬(130)의 RPM수가 정상인가를 판단하는 제 1 단계(101 내지 102); 상기 송풍팬(130)의 RPM수가 정상이면 제어부(120)는 가스밸브(140)를 개폐하고 점화트랜스(150)를 구동하며 점화트랜스(150)에 의해 버너(11)가 착화되었나를 판단하는 제 2 단계(103 내지 104); 상기 제2단계에서 착화가 이루어졌으면 제어부(120)는 착화시간이 설정된 착화시간을 경과하였나를 판단하는 제 3 단계(105); 상기 제3단계에서 착화시간이 설정된 착화시간을 경과하였으면 제어부(120)는 지연시간을 카운트 업, 다운하여 카운트값(총지연시간)이 설정시간 보다 큰가를 판단하는 제 4 단계(106 내지 107); 상기 제4단계에서 카운트값이 설정시간 보다 큰면 제어부(120)는 착화가스압을 변동하는 제 5 단계(108)를 구비한 것을 특징으로 하는 가스보일러의 착화가스압 제어방법.In the control method of the gas boiler, when the combustion stroke is started, the control unit 120 performs pre-purging of the blowing fan 130 and the RPM number of the blowing fan 130 through the detection signal applied through the RPM detection unit 100. First steps 101 to 102 for determining whether it is normal; When the RPM number of the blower fan 130 is normal, the controller 120 opens and closes the gas valve 140, drives the ignition transformer 150, and determines whether the burner 11 is ignited by the ignition transformer 150. Two steps 103-104; When the ignition has been made in the second step, the control unit 120 determines whether the ignition time has elapsed by the set ignition time (105); If the ignition time has elapsed in the third step, the control unit 120 counts up and down the delay time to determine whether the count value (total delay time) is greater than the set time (steps 106 to 107). ; If the count value is greater than the set time in the fourth step, the control unit 120 has a fifth step (108) of varying the ignition gas pressure, characterized in that the gas boiler ignition gas pressure control method.
KR1019980048542A 1998-11-13 1998-11-13 Method of controlling ignition gas pressure of gas boiler KR20000032152A (en)

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