KR100213647B1 - Initiated ignition control method for an oil combustor - Google Patents

Initiated ignition control method for an oil combustor Download PDF

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Publication number
KR100213647B1
KR100213647B1 KR1019940010733A KR19940010733A KR100213647B1 KR 100213647 B1 KR100213647 B1 KR 100213647B1 KR 1019940010733 A KR1019940010733 A KR 1019940010733A KR 19940010733 A KR19940010733 A KR 19940010733A KR 100213647 B1 KR100213647 B1 KR 100213647B1
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South Korea
Prior art keywords
ignition
blower fan
temperature
control method
heater
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KR1019940010733A
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Korean (ko)
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KR950033261A (en
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고창현
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배순훈
대우전자주식회사
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N5/00Systems for controlling combustion
    • F23N5/02Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/14Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermo-sensitive resistors

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

Abstract

본 발명은 로타리히터와 같은 오일연소기의 초기 점화시에 송풍팬을 적절히 제어하여 착화성능을 상승시킨 오일연소기의 초점점화시 송풍팬 제어방법에 관한 것으로, 확산모터, 분산팬, 버너로의 송풍을 위해 구비된 송풍팬과, 기화기 및 염구망을 포함하는 로타리식히터의 오일연소기의 제어방법으로서, 운전시작명령이 입력되면 기화기가열 히터를 발열시키고 동시에 송풍팬을 최저의 회전수로 구동시키는 과정과, 기화기의 온도가 착화가능온도에 도달하면 상기 송풍팬의 회전수를 통상의 회전수로 복귀제어하고, 송풍팬의 안정상태가 검출되면 점화를 시도하는 과정을 포함하여 된 것이다.The present invention relates to a method of controlling a blower fan during focus ignition of an oil burner in which an ignition performance is increased by appropriately controlling a blower fan during initial ignition of an oil burner such as a rotary heater. A control method of an oil burner of a rotary heater including a blower fan, a carburetor, and a salt net, which is provided for a process, the process of driving a carburetor heater to generate heat and simultaneously driving the blower fan at the minimum rotational speed when an operation start command is input; When the temperature of the vaporizer reaches the ignition temperature, the rotation speed of the blower fan is returned to the normal speed, and when the stable state of the blower fan is detected, the ignition is attempted.

Description

오일연소기의 초기점화 제어방법Control method of initial ignition of oil burner

제1도는 일반적인 오일연소기의 버너 구성도.1 is a burner configuration of a general oil burner.

제2도는 종래 오일연소기의 초기 점화제어 방법을 설명하기 위한 흐름도.2 is a flow chart for explaining the initial ignition control method of a conventional oil burner.

제3도는 본 발명에 따른 오일연소기의 회로도.3 is a circuit diagram of an oil burner according to the present invention.

제4도는 본 발명에 의한 초기점화 제어방법을 설명하기 위한 흐름도.4 is a flowchart for explaining an initial ignition control method according to the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10 : 버너 11 : 염구망10: burner 11: salt net

12 : 기화기 13 : 히터12: carburetor 13: heater

14 : 분산팬 15 : 노즐14: dispersion fan 15: nozzle

16 : 확산모터 17 : 모터16: diffusion motor 17: motor

18 : 송풍팬 19 : 온도감지소자18: blower fan 19: temperature sensing element

20 : 불꽃감지봉 21 : 이그나이터20: flame detection rod 21: igniter

30 : 마이컴 40 : 전자펌프 구동부30: microcomputer 40: electronic pump drive unit

50 : 송풍팬 구동부 60 : 염전압 감지부50: blower fan drive unit 60: salt voltage detection unit

70 : 히터 구동부 80 : 기화기 온도감지부70: heater driving unit 80: carburetor temperature detection unit

본 발명은 로타리히터와 같은 오일연소기의 초기점화 제어방법에 관한 것으로, 특히 초기 점화시에 송풍팬을 적절히 제어하여 착화성능을 상승시킨 오일연소기의 초기점화 제어방법에 관한 것이다.The present invention relates to an initial ignition control method for an oil combustor such as a rotary heater, and more particularly, to an initial ignition control method for an oil combustor in which an ignition performance is increased by appropriately controlling a blowing fan during initial ignition.

일반적인 로타리히터의 초기 점화동작을 제1도 내지 제2도를 통하여 알아보면, 먼저, 운전시작명령이 입력되면 히터(13)에 전원을 인가하여 히터(13)를 발열시킴으로써 기화기(12)를 예열시켜준다(201단계). 그리고, 기화기(12)에 부착된 온도감지소자(19)를 통해서 기화기(12)의 온도를 검출하여 기화기(12)의 온도가 착화 가능한 온도인가를 판단한다.(202단계). 여기서 기화기(12)의 온도가 사전에 설정되어 있는 착화가 가능한 온도인 것으로 검출되면 모터(17)를 구동시켜 송풍팬(18)를 회전시킨다(203단계).Referring to the initial ignition operation of a general rotary heater through FIGS. 1 to 2, first, when the operation start command is input, the carburetor 12 is preheated by heating the heater 13 by applying power to the heater 13. (Step 201). Then, the temperature of the vaporizer 12 is detected through the temperature sensing element 19 attached to the vaporizer 12, and it is determined whether the temperature of the vaporizer 12 is ignitable (step 202). If the temperature of the vaporizer | carburetor 12 is detected as the temperature which can be set in advance, the motor 17 is driven to rotate the blower fan 18 (step 203).

상기 송풍팬(18)이 구동한 후 송풍팬(18)의 회전수(PRM)가 일정하게 되는 시점, 곧 기화기(12) 및 염구망(11)으로의 송풍량이 일정하게 되는 시점이 검출(204단계)되면 미도시된 전자펌프를 구동시켜 연료를 노즐(15)을 통해 확산모터(16)의 구동으로 회전되는 분산팬(14)으로 분사시켜 연료는 기화기(12)의 내벽에 골고루 분사되고 동시에 기화되어 버너(10)상부, 곧 염구망(11)으로 상승한다. 이때 염구망(11) 상부에 설치된 이그나이터(21)가 스파크를 일으키면서 점화작동은 개시되며, 불꽃감지봉(20)을 통해 불꽃의 전류가 일정값이상으로 곧 착화성공전류로 감지되며 착화가 성공된 것으로 판단하게 된다(205단계). 그리고 다음단계(206)인 연소운전을 실행한다.The time when the rotation speed PRM of the blower fan 18 becomes constant after the blower fan 18 is driven, that is, the time when the amount of air blown into the vaporizer 12 and the salt network 11 becomes constant (204) In step), the fuel pump is injected to the dispersion fan 14 which is rotated by the driving of the diffusion motor 16 through the nozzle 15 by driving the electron pump, which is not shown, and the fuel is evenly sprayed on the inner wall of the vaporizer 12. It vaporizes and rises to the burner 10 upper part, the salt net 11. At this time, the igniter 21 is sparked by the igniter 21 installed on the upper part of the flame network 11 and the ignition operation is started, and the spark current is sensed as a ignition success current over a predetermined value and the ignition succeeds. It is determined that the operation (step 205). Then, the combustion operation that is the next step 206 is executed.

이와 같이 구동되는 오일연소기에 있어 전술한 초기 예열시에 히터(13)의 발열로 가열되는 기화기(12)는 그 열기가 기화기(12)의 측면이나, 하면으로 열전도되기 때문에 자연상승하는 공기(열기)로 버너(10)상부에 염구망(11)을 가열하는 효과가 떨어지게 되며, 특히 염구망(11)상부의 온도는 그 하부의 온도보다 낮게 된다.In the oil combustor driven as described above, the vaporizer 12 heated by the heat of the heater 13 during the initial preheating described above is naturally rising air because the heat is conducted to the side or the bottom surface of the vaporizer 12. The effect of heating the salt net 11 on top of the burner 10 is reduced, in particular, the temperature of the salt net 11 is lower than the temperature of the lower portion.

또한, 기화기(12)의 온도가 착화가능온도가 되면 송풍팬(18)을 구동시켜 풍량을 기화기내부 및 염구망(11)으로 불어주게 되는바, 이때 버너(10)내부의 온도가 갑자기 하락하여 염구망(11)의 온도가 떨어지게 된다.In addition, when the temperature of the vaporizer 12 reaches the ignition temperature, the blower fan 18 is driven to blow the air into the vaporizer and the ball network 11. In this case, the temperature in the burner 10 suddenly decreases. The temperature of the dyeing net 11 will fall.

이러한 상태에서 전자펌프 및 이그나이터(21)를 구동시켜 점화를 시도하면 착화가 실패하는 경우가 발생하게 되었다. 그 이유는 기화기(12)를 통해 기화된 가스가 온도가 낮은 염구망(11)의 상부에서 온도가 낮아지기 때문이다.In this state, if the ignition is attempted by driving the electronic pump and the igniter 21, the ignition fails. This is because the gas vaporized through the vaporizer 12 is lowered in temperature at the top of the low-temperature chain 11.

더우기, 상기 현상은 오일연소기 사용 장소의 주위온도가 낮을때 더욱 빈번하게 발생되는 문제점이 있었다.In addition, the phenomenon was more frequently generated when the ambient temperature of the place where the oil burner is used is low.

본 발명은 상기한 문제점을 해결하기 위하여 안출된 것으로, 본 발명의 목적은 오일연소기의 초기 점화시 송풍팬을 저속으로 구동하여 착화율을 좋게한 오일연소기의 초기점화시 송풍팬 제어방법을 제공하는 것에 있다.The present invention has been made to solve the above problems, an object of the present invention is to provide a blowing fan control method for the initial ignition of the oil burner to improve the ignition rate by driving the blow fan at a low speed during the initial ignition of the oil burner Is in.

이와 같은 목적을 달성하기 위한 본 발명은, 확산모터, 분산팬, 버너로의 송풍을 위해 구비된 송풍팬과, 기화기 및 염구망을 포함하는 로타리식 히터의 오일연소기의 제어방법으로서, 운전시작명령이 입력되면 기화기가열 히터를 발열시키고 동시에 송풍팬을 최저의 회전수로 구동시키는 과정과, 기화기의 온도가 착화가능온도에 도달하면 상기 송풍팬의 회전수를 통상의 회전수로 복귀제어하고, 송풍팬의 안정상태가 검출되면 점화를 시도하는 과정을 포함하여 된 것이다.In order to achieve the above object, the present invention provides a control method of an oil burner of a rotary heater including a blowing fan provided for blowing to a diffusion motor, a dispersion fan, and a burner, and a carburetor and a salt net, and an operation start command. When the input is generated, the carburetor heats the heater and at the same time drives the blower fan at the lowest rotational speed, and when the temperature of the carburetor reaches the ignition temperature, the rotation speed of the blower fan is returned to the normal rotational speed, If the fan's steady state is detected, this includes attempting to ignite.

이하, 첨부된 도면에 의거하여 본 발명을 보다 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

제3도는 전술한 제1도의 버너 구성도에 의한 본 발명이 적용되는 오일연소기의 회로도로서, 부호 30은 마이컴으로, 본 발명에 따른 소정의 프로그램을 내장하고, 기기의 전체동작을 제어한다.3 is a circuit diagram of an oil combustor to which the present invention according to the burner configuration of FIG. 1 is applied. Reference numeral 30 denotes a microcomputer, which incorporates a predetermined program according to the present invention, and controls the overall operation of the apparatus.

부호 40은 전자펌프 구동부로서, 전자펌프(EP), 릴레이(RY1), 다이오드(D1), 인버터(11)(12) 및 포토커플러(PC)로 구성되어, 상기 마이컴(30)이 포트(P1)로 하이신호를 출력하면, 이때 출력된 하이신호는 인버터(11)를 통해 릴레이(RY1)를 통전시켜 그 스위치 접점이 온되어 소정전압(V1:24V)이 전자펌프(EP)에 인가되고, 동시에 포트(P2)로 소정주파수의 펄스를 출력하여 인버터(12)를 통해 포토커플러(PC)를 단속적으로 턴온시켜 전자펌프(EP)에 소정전압을 인가함으로써 전자펌프(EP)는 펌핑작용을 개시한다.Reference numeral 40 denotes an electronic pump driver, which is composed of an electronic pump EP, a relay RY1, a diode D1, an inverter 11, 12, and a photocoupler PC, and the microcomputer 30 is connected to a port P1. When the high signal is outputted, the output high signal is energized through the relay RY1 through the inverter 11, and its switch contact is turned on, and a predetermined voltage (V1: 24V) is applied to the electronic pump EP. At the same time, a pulse of a predetermined frequency is output to the port P2, the photocoupler PC is intermittently turned on through the inverter 12, and a predetermined voltage is applied to the electronic pump EP to start the pumping action. do.

부호 50은 송풍팬 구동부로서, 저항(R2), 인버터(I3), 포토트라이악(PT)및 송풍모터(17)로 구성되어, 상기 마이컴(30)이 포트(P3)로 소정펄스 신호를 출력하여 인버터(13)를 통해 포토트라이악(PT)를 통전시켜 송풍모터(17)를 구동시키되, 상기 포토트라이악(PT)의 온타임(ON TIME)에 따라 송풍모터(17)에 인가되는 전원(AC)의 실효치가 가변되어 송풍모터(17)의 회전수(RPM)를 가변시킴으로써 송풍량을 제어하게 된다.Reference numeral 50 denotes a blower fan driver, which is composed of a resistor R2, an inverter I3, a phototriac PT, and a blower motor 17, and the microcomputer 30 outputs a predetermined pulse signal to the port P3. Power to the blower motor 17 by energizing the phototriac PT through the inverter 13, and applying the power to the blower motor 17 according to the ON time of the phototriac PT. The effective value of AC is varied to control the blowing amount by varying the rotational speed RPM of the blowing motor 17.

부호 60은 염전압 감지부로서, 불꽃감지봉(20)의 일단에는 저항(R3)과 저항(R4)에 의해 일정직류전압(12V)이 분압되어 인가되도록 접속하고, 상기 불꽃감지봉(20)의 접지단이 저항(R5∼R7) 및 콘덴서(C1)를 통해 마이컴(30)의 입력포트(P4)에 접속되도록 구성되어, 착화시 불꽃이 불꽃감지봉(20)에 존재하면 염전류가 흐르게 되고, 이 염전류는 불꽃의 크기에 따라 일정한 차이를 가지게 된다. 이때 염전류는 저항(R5)과 저항(R6)에 의해 전압값으로 변환되고 저항(R7)과 콘덴서(C1)를 통해 마이컴(30)의 입력포트(P4)에 소정전압(0V∼5V)으로 입력된다. 따라서, 상기 마이컴(30)은 포트(P4)로 입력되는 값을 읽어들여 염전류의 값을 인식하게 되는데 염전류가 약 2.5μA이상이 되는 전압으로 감지되면 불꽃이 생성된 것으로 인식하게된다.Reference numeral 60 denotes a salt voltage detection unit. The flame detection rod 20 is connected to one end of the flame detection rod 20 such that a constant DC voltage 12V is divided and applied by a resistor R3 and a resistor R4. Is connected to the input port P4 of the microcomputer 30 through the resistors R5 to R7 and the capacitor C1 so that a salt current flows when a spark is present in the flame detecting rod 20 during ignition. This salt current has a certain difference depending on the size of the flame. At this time, the salt current is converted into a voltage value by the resistor R5 and the resistor R6 and the predetermined voltage (0V to 5V) is input to the input port P4 of the microcomputer 30 through the resistor R7 and the capacitor C1. Is entered. Therefore, the microcomputer 30 reads the value input to the port P4 and recognizes the value of the salt current. When the salt current is detected as a voltage of about 2.5 μA or more, the microcomputer 30 recognizes that the spark is generated.

부호 70은 히터구동부로서, 인버터(14), 다이오드(D2), 릴레이(RY2) 및 히터(13)로 구성되어 상기 마이컴(30)이 포트(P5)로 하이신호를 출력하면 이때 출력된 신호는 인버터(14)를 통해 반전되고 릴레이(RY2)의 코일부가 여자되어 그 스위치가 온됨으로써 히터(13)는 구동된다.Reference numeral 70 denotes a heater driver, which is composed of an inverter 14, a diode D2, a relay RY2, and a heater 13, and the microcomputer 30 outputs a high signal to the port P5. The heater 13 is driven by inverting through the inverter 14, exciting the coil portion of the relay RY2, and turning on the switch.

부호 80은 기화기 온도감지부로서, 온도감지소자(19), 저항(R8)(R9), 콘덴서(C2)로 구성되어 기화기온도에 따라 가변되는 온도감지소자(19)의 저항을 저항(R8)과의 전압분배신호로 마이컴(30)의 입력포트(P6)로 입력시켜 마이컴(30)이 기화기(12)의 온도를 인식할 수 있도록 하여준다.Reference numeral 80 denotes a vaporizer temperature sensing unit, which is composed of a temperature sensing element 19, a resistor R8 (R9), and a capacitor C2, and converts the resistance of the temperature sensing element 19 which varies according to the vaporizer temperature. The input voltage (P6) of the microcomputer 30 as a voltage distribution signal of and to allow the microcomputer 30 to recognize the temperature of the vaporizer 12.

상기화 같이 구성시켜서된 오일연소기에 적용되는 본 발명의 작용효과를 제4도의 작동 흐름도를 참조하여 설명한다.The operation and effect of the present invention applied to the oil burner configured as described above will be described with reference to the operation flowchart of FIG.

먼저, 전원이 인가되고, 미도시도된 키입력회로에 의해 운전시작명령이 입력되면 마이컴(30)은 포트(P5)로 하이신호를 출력하여 기화기(12) 예열용 히터(13)를 발열시켜주고 동시에 송풍팬(18)을 구동시켜주되, 포트(P3)로 출력되는 펄스신호중 포토트라이악(PT)의 온타임이 가장 최소가 될 수 있는 펄스의 신호를 출력하여 송풍모터(17)의 회전수를 최소로 하여주어 미소한 풍량이 버너(10)로 진입하도록 하여준다(S1단계).First, when power is applied and the start operation command is input by a key input circuit (not shown), the microcomputer 30 outputs a high signal to the port P5 to heat the vaporizer 12 preheating heater 13. At the same time, the blower fan 18 is driven, and the number of rotations of the blower motor 17 is output by outputting a pulse signal that can minimize the on-time of the phototriac PT among the pulse signals output to the port P3. Minimize the amount of air to enter the burner (10) (S1 step).

따라서, 기화기(12)는 가열되고 기화기(12)의 내부열기가 상기 송풍팬(18)에 의해 불어오는 미소풍량으로 버너상부 곧, 염구망(11)에 효과적으로 전달되어 염구망(11)의 온도가 균일하게 분포되고 또 고온이 유지되게 된다.Accordingly, the vaporizer 12 is heated and the internal heat of the vaporizer 12 is effectively transmitted to the burner upper portion, that is, the salt net 11 by the amount of micro-air blown by the blower fan 18, so that the temperature of the salt net 11 is increased. Is uniformly distributed and high temperature is maintained.

또한, 상기 히터(13)가열후, 기화기(12)의 온도를 온도감지소자(19)를 통해 검출하여 점화를 시도할 수 있는 착화가능온도에 도달했는가를 판단한다(S2단계). 여기서, 착화가능온도가 검출되면 송풍팬(18)의 회전수를 착화시의 레벨로 상승시켜 구동한다(S3단계). 보통 착화시의 송풍모터(17)의 RPM은 1100∼1300이 된다. 따라서, 송풍량은 증가하며 미도시된 송풍모터 RPM검출호로를 통해 송풍모터(17)의 RPM을 검출하여, 이 RPM이 설정된 RPM과 동일해지는 안정시점을 검출한다(S4단계).In addition, after the heater 13 is heated, the temperature of the vaporizer 12 is detected through the temperature sensing element 19 to determine whether the ignition temperature at which ignition is attempted has been reached (step S2). Here, when the ignition temperature is detected, the rotation speed of the blower fan 18 is increased to the level at the ignition time and is driven (step S3). The RPM of the blower motor 17 at the time of ignition is usually 1100 to 1300. Therefore, the blowing amount is increased and the RPM of the blowing motor 17 is detected through the blowing motor RPM detection arc, which is not shown, to detect a stable time point at which this RPM is equal to the set RPM (step S4).

상기 S4단계에서 안정시점이 검출되면 착화를 시도하는바, 포트(P1)(P2)로 소정출력을 행하여 전자펌프(EP)를 구동시켜 연료를 노즐(15)을 통해 확산모터(16)의 구동으로 회전되는 분산팬(14)으로 분사시켜 연료는 기화기(12)의 내벽에 골고루 분사되고 동시에 기화되어 버너(10)상부로 상승한다. 이때 염구망(11) 상부에 설치된 이그나이터(21)가 스파크를 일으키면서 점화작동은 개시되며, 불꽃감지봉(20)을 통해 불꽃의 전류가 일정값 이상으로 곧 착화성공전류로 감지되면 착화는 성공되고, 상기 불꽃감지봉(20)을 통해 불꽃의 전류가 일정값이상으로 곧 착화성공전류로 감지되지 않으면 착화를 재시도하는 착화운전을 실행한다(S5단계).When the stable point is detected in the step S4, the ignition is attempted. The predetermined output is output to the ports P1 and P2 to drive the electron pump EP to drive fuel through the nozzle 15 to drive the diffusion motor 16. The fuel is injected into the dispersion fan 14 which is rotated in such a manner that the fuel is evenly sprayed on the inner wall of the vaporizer 12 and simultaneously vaporized to rise above the burner 10. At this time, the ignition operation is started while the igniter 21 installed in the upper part of the flame network 11 sparks, and when the current of the flame is detected as a ignition success current through a flame detection rod 20, the ignition succeeds. Then, if the current of the flame through the flame detection rod 20 is not detected as the ignition success current immediately above a predetermined value and performs the ignition operation to retry the ignition (step S5).

그리고 다음단계(206)인 연소운전을 사용자가 설정한 온도를 기준으로 연소제어를 행한다.Then, combustion control is performed on the basis of the temperature set by the user in the combustion operation of next step 206.

이상에서와 같이 본 발명은 버너헤드부의 온도를 높고 균일하게 만들어 줌으로써 착화시 송풍팬이 정상 RPM으로 구동되더라도 기화가스의 온도하락이 줄어들어 초기 착화실패율을 크게 줄인 유용한 발명이다.As described above, the present invention is a useful invention that greatly reduces the initial ignition failure rate by reducing the temperature drop of the vaporized gas even when the blowing fan is driven at normal RPM by making the burner head part high and uniform.

Claims (1)

운전시작명령이 입력되면 기화기가열 히터(12)를 발열시키고 동시에 송풍팬(18)을 최저의 회전수로 구동시키는 단계와, 상기 기화기(12)의 온도가 착화가능온도에 도달하면 상기 송풍팬(18)의 회전수를 통상의 회전수로 복귀제어하는 단계 및, 상기 송풍팬(18)의 안정상태가 검출되면 점화를 시도하는 단계를 포함하여 이루어진 것을 특징으로 하는 오일연소기의 초기점화시 송풍팬 제어방법.When the operation start command is input, the carburetor heater 12 generates heat and simultaneously drives the blower fan 18 at the lowest rotational speed; and when the temperature of the carburetor 12 reaches the ignition temperature, the blower fan ( 18) return control to the normal rotational speed, and attempting to ignite when the stable state of the blower fan 18 is detected, the blower fan during the initial ignition of the oil burner, characterized in that it comprises Control method.
KR1019940010733A 1994-05-17 1994-05-17 Initiated ignition control method for an oil combustor KR100213647B1 (en)

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