KR910002743B1 - Combustion control device - Google Patents

Combustion control device Download PDF

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Publication number
KR910002743B1
KR910002743B1 KR1019860010929A KR860010929A KR910002743B1 KR 910002743 B1 KR910002743 B1 KR 910002743B1 KR 1019860010929 A KR1019860010929 A KR 1019860010929A KR 860010929 A KR860010929 A KR 860010929A KR 910002743 B1 KR910002743 B1 KR 910002743B1
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South Korea
Prior art keywords
fan
control valve
burner
proportional control
temperature
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KR1019860010929A
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Korean (ko)
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KR870008151A (en
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시게오 나루세
신지 구로다
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린나이 가부시기가이샤
나이 또오 스스무
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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
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F23N1/022—Regulating fuel supply conjointly with air supply using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/16—Measuring temperature burner temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2233/00—Ventilators
    • F23N2233/06—Ventilators at the air intake
    • F23N2233/08—Ventilators at the air intake with variable speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/14—Fuel valves electromagnetically operated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/16—Fuel valves variable flow or proportional valves

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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)

Abstract

내용 없음.No content.

Description

연소 제어장치Combustion controller

제1도는 본 발명의 일실시예를 나타낸 설명도.1 is an explanatory diagram showing an embodiment of the present invention.

제2도는 그 요부의 블럭선도.2 is a block diagram of the main part.

제3도는 본 발명의 다른 실시예를 나타낸 블럭도이다.3 is a block diagram showing another embodiment of the present invention.

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

5 : 버너 6 : 팬5: burner 6: fan

11 : 가스공급로 13 : 전자식 비례제어밸브11: gas supply path 13: electronic proportional control valve

15 : 온도 조절회로 16 : 팬구동회로15: temperature control circuit 16: fan drive circuit

18 : 팬모터 19 : 검출회로18: fan motor 19: detection circuit

20 : 비례제어밸브 구동회로20: proportional control valve driving circuit

본 발명은 버너에의 가스공급로에 설치되는 전자식 비례제어밸브와, 그 버너에 공기를 공급하는 팬을 구비한 가스연소기의 연소 제어장치에 관한 것이다.The present invention relates to a combustion control apparatus for a gas burner having an electronic proportional control valve installed in a gas supply path to a burner and a fan for supplying air to the burner.

종래의 이 종류의 장치로서 버너의 부하온도와 설정온도와의 온도차에 따라 전자식 비례제어밸브의 통전전류를 변화시키는 비례제어회로와, 이 비례제어회로로부터의 출력을 입력하여, 이 입력의 크기에 따라 팬모터의 회전수를 변화시키는 팬구동회로를 구비하고, 전자식 비례제어밸브의 통전전류의 크기에 따라 팬모터의 회전수를 변화시켜 버너의 가스공급량에 알맞는 양의 공기를 공급하여, 버너를 설정온도에 따른 소정의 연소량으로하여, 부하온도가 설정온도가 되도록 제어하는 것이 알려져 있다.In this type of conventional device, a proportional control circuit for changing an energizing current of an electronic proportional control valve according to a temperature difference between a load temperature and a set temperature of a burner, and an output from the proportional control circuit are inputted to the magnitude of this input. The fan drive circuit is provided to change the rotational speed of the fan motor, and the rotational speed of the fan motor is changed in accordance with the magnitude of the energizing current of the electronic proportional control valve to supply the air in the amount corresponding to the gas supply of the burner. It is known to control the load temperature to be the set temperature by setting the predetermined combustion amount according to the set temperature.

그러나, 상기 종래 장치에 의하면, 설정온도의 변경시, 전자식 비례제어밸브와 팬모터와의 응답성의 상이에 의하여 전자식 비례제어밸브의 실제의 통전전류가 새로운 설정온도에 대응한 정상의 통전전류에 도달하여 전자식 비례제어밸브의 실제의 개방도가 새로운 설정온도에 대응한 정상개방도로 된후 잠시후에 팬모터의 실제의 회전수가 새로운 설정온도에 대응한 정상 회전수에 도달하게 되어 팬모터가 정상 회전수에 도달할 때까지의 과도적 기간중은 가스공급량과 공기공급량 사이에 평형이 되지 않고, 버너가 불완전 연소하여 새로운 설정온도에 따른 소망의 연소량을 얻을 수 없다는 단점이 발생한다.However, according to the conventional apparatus, when the set temperature is changed, the actual conduction current of the electronic proportional control valve reaches the normal conduction current corresponding to the new set temperature due to the difference in responsiveness between the electronic proportional control valve and the fan motor. After the actual opening degree of the electronic proportional control valve becomes the normal opening degree corresponding to the new set temperature, after a while, the actual speed of the fan motor reaches the normal speed corresponding to the new set temperature. During the transient period until reaching, there is a disadvantage that there is no equilibrium between the gas supply amount and the air supply amount, and that the burner is incompletely burned to obtain the desired combustion amount according to the new set temperature.

본 발명은 응답이 느린 팬 또는 팬모터의 구동상태를 검출하고, 이에 의거하여 응답이 바른 전자식 비례제어밸브의 통전전류를 제어하도록 하여 상기 불편을 해소하고자 하는 것으로 버너로의 가스공급로에 설치하는 전자식 비례제어밸브와, 버너에 연소용 공기를 공급하는 팬과, 버너의 부하온도와 설정온도와의 온도차에 따른 신호를 출력하는 온도조절회로와, 이 온도조절회로로부터의 출력신호를 입력신호로하여 이 입력신호의 크기에 따라 팬에 의한 연소용 공기의 공급량을 변화시키는 팬구동회로와, 팬 또는 팬모터의 구동상태를 검출하는 검출회로와, 이 검출회로로부터의 신호의 크기에 따라서 전자식 비례제어밸브의 통전전류를 변화시키는 비례제어밸브 구동회로로 이루어진다. 다음에 본 발명을 가스급탕기에 적용하여, 팬모터의 구동상태로서 팬모터의 회전수를 검출할 경우의 실시예를 도면에 의거하여 설명한다.The present invention is to detect the driving state of a slow response fan or fan motor, and to control the energizing current of the electronic proportional control valve with a good response based thereon to solve the inconvenience, which is installed in the gas supply path to the burner An electronic proportional control valve, a fan for supplying combustion air to the burner, a temperature control circuit for outputting a signal according to the temperature difference between the load temperature and the set temperature of the burner, and an output signal from the temperature control circuit as input signals. Fan drive circuit for varying the supply amount of combustion air by the fan according to the magnitude of the input signal, a detection circuit for detecting the driving state of the fan or fan motor, and an electronic proportionality according to the magnitude of the signal from the detection circuit. It consists of a proportional control valve drive circuit for changing the energizing current of the control valve. Next, an embodiment in the case where the rotation speed of the fan motor is detected as the driving state of the fan motor by applying the present invention to a gas water heater will be described with reference to the drawings.

제1도에 있어서, 1은 하부에 통기구멍(2)을 구비하고, 상부에 배기통(3)을 구비한 가스 급탕기 본체이고, 이 본체(1)내에는 중간부에 열교환기(4)와 이것을 가열하는 버너(5)를 구비하고, 하부에 버너(5)에 연소용 공기를 공급하는 팬(6)을 구비하고, 상부에 상기 배기통(3)에 이어지는 배기구(7)를 구비하는 연소실(8)을 수용하고, 이 열교환기(4)의 상류측의 급수관(9)으로부터 이송되어 오는 물을 열교환기(4)내에서 따뜻하게 하고, 이 열교환기(4)의 하류측의 출탕관(10)으로부터 탕수를 얻을 수 있도록 함과 동시에 연소배기를 배기통(3)을 거쳐 외부에 방출하도록 하였다.In FIG. 1, 1 is the gas water heater main body which has the ventilation hole 2 in the lower part, and the exhaust cylinder 3 in the upper part, The heat exchanger 4 and this in an intermediate part in this main body 1. A combustion chamber 8 having a burner 5 for heating, having a fan 6 for supplying combustion air to the burner 5 at a lower portion thereof, and an exhaust port 7 connected to the exhaust cylinder 3 at an upper portion thereof. ), The water transferred from the water supply pipe 9 upstream of the heat exchanger 4 is warmed in the heat exchanger 4, and the tapping pipe 10 on the downstream side of the heat exchanger 4 is heated. It was made to obtain the water from the water and discharge the combustion exhaust to the outside via the exhaust pipe (3).

도면중 11은 버너(5)에 연결되는 가스공급로를 나타내고, 이 가스공급로(11)에는 상류측의 전자식 개폐밸브(12)와 하류측의 전자식 비례제어밸브(13)를 설치하였다. 버너(5)로의 공기 공급량의 증감제어는 제2도에 나타낸 바와 같이 제어회로(14)내의 온도조절회로(15)로부터의 신호를 받은 팬구동회로(16)에서 행하게 되며, 종래 공지의 온도조절회로(15)로부터는 상기 출탕관(10)내의 감온소자(17)에 의하여 검출된 부하온도인 실제의 출탕온도와 온도조절회로(15)내의 설정온도와의 온도차에 따른 신호가 출력되고, 이 출력신호를 팬구동회로(16)에 입력하여, 크기에 따른 전력을 상기 팬(6)의 모터(18)에 공급하여 회전수를 변화시키게 된다.11 shows a gas supply passage connected to the burner 5, and the gas supply passage 11 is provided with an upstream electromagnetic open / close valve 12 and a downstream electronic proportional control valve 13. The increase / decrease control of the air supply amount to the burner 5 is performed by the fan drive circuit 16 which receives a signal from the temperature regulating circuit 15 in the control circuit 14, as shown in FIG. The circuit 15 outputs a signal corresponding to the temperature difference between the actual tapping temperature, which is the load temperature detected by the temperature sensing element 17 in the tapping tube 10, and the set temperature in the temperature regulating circuit 15, The output signal is input to the fan drive circuit 16 to supply power according to the magnitude to the motor 18 of the fan 6 to change the rotation speed.

또 이 버너(5)로의 가스공급량의 증감제어는 제2도에 나타낸 바와 같이 제어회로(14)내의 검출회로(19)로부터의 신호를 받은 비례제어밸브 구동회로(20)에서 행하게 되며, 검출회로(19)로부터는 팬모터(18)의 실제의 회전수에 따른 신호가 출력되고, 이 출력신호를 비례제어밸브 구동회로(20)에 입력하고, 그 크기에 따른 전류를 상기 전자식 개폐밸브(12)의 코일과 상기 전자식 비례제어밸브(13)의 코일에 인가하여 전자식 개폐밸브(12)를 개방함과 동시에 전자식 비례제어밸브(13)의 개방도를 조절하게 된다.Incidentally, the increase / decrease control of the gas supply amount to the burner 5 is performed by the proportional control valve drive circuit 20 which receives a signal from the detection circuit 19 in the control circuit 14 as shown in FIG. From 19, a signal corresponding to the actual rotational speed of the fan motor 18 is output, and this output signal is input to the proportional control valve drive circuit 20, and a current according to the magnitude thereof is supplied to the electronic on-off valve 12. The opening of the electronic on / off valve 12 and the opening of the electronic proportional control valve 13 are controlled by applying to the coil of the coil and the coil of the electronic proportional control valve 13.

상기와 같은 공기공급량과 가스공급량의 제어에 있어서, 가스연소기인 가스급탕기의 새로운 설정온도를 앞서의 설정온도보다 높였을 때에는, 부하온도인 출탕온도와 새로운 설정온도와의 온도차에 따른 전력이 팬구동회로(16)에 의하여 팬(6)의 모터(18)에 공급되고 관성 때문에 응답이 느린 팬모터(18)는 서서히 회전수를 높이면서 새로운 설정온도에 대응한 정상 회전수에 도달한다. 이 정상 회전수가 될때까지의 과도적 기간중의 팬모터(18)의 회전수는 검출회로(19)에 의하여 시시각각 검출되므로, 응답이 빠른 전자식 비례제어밸브(13)의 통전전류도 비례제어밸브 구동회로(20)에 의하여 팬모터(18)의 회전수에 추종하여 서서히 커지고 전자식 비례제어밸브(13)의 개방도도 서서히 커져 팬모터(18)가 정상 회전수가 됨과 동시에 전자식 비례제어밸브(13)가 정상 개방도로 된다.In the control of the air supply amount and the gas supply amount as described above, when the new set temperature of the gas water heater, which is a gas burner, is higher than the previous set temperature, the electric power according to the temperature difference between the tapping temperature, which is the load temperature, and the new set temperature is driven by the fan driving circuit. The fan motor 18, which is supplied by the furnace 16 to the motor 18 of the fan 6 and has a slow response because of inertia, gradually increases the rotational speed and reaches the normal rotational speed corresponding to the new set temperature. Since the rotational speed of the fan motor 18 during the transient period until this normal rotational speed is detected every time by the detection circuit 19, the energizing current of the quick response electronic proportional control valve 13 is also proportional control valve drive circuit. The rotation speed of the fan motor 18 is gradually increased by the furnace 20, and the opening degree of the electronic proportional control valve 13 is also gradually increased, and the fan motor 18 becomes the normal rotational speed and the electronic proportional control valve 13 Is the normal opening degree.

그러므로 설정온도를 변경하였을 때 팬모터(18)가 정상 회전수에 도달할 때까지의 과도적 기간중에도 버너(5)에 공급되는 공기와 가스는 적절한 비율로 혼합되므로, 버너(5)가 불완전 연소를 하는 일이 없다.Therefore, even when the set temperature is changed, the air and gas supplied to the burner 5 are mixed at an appropriate ratio even during the transient period until the fan motor 18 reaches the normal rotation speed, so that the burner 5 is incompletely burned. There is nothing to do.

또, 새로운 설정온도를 앞서의 설정온도 보다 내렸을 때는 팬모터(18)는 서서히 회전수를 내려 정상 회전수에 도달하고, 이에 추종하여 전자식 비례제어밸브(13)의 개방도도 서서히 작아져서 정상 개방도에 도달하므로, 설정온도를 올렸을때와 마찬가지로, 정상시는 물론이지만 과도적 기간중에도, 공기와 가스와는 적절한 비율로 혼합되어, 버너(5)가 불완전 연소를 하는 일이 없다.In addition, when the new set temperature is lower than the previous set temperature, the fan motor 18 gradually lowers the rotation speed to reach the normal rotation speed. Following this, the opening degree of the electronic proportional control valve 13 is also gradually decreased to open normally. Thus, as in the case of raising the set temperature, the air and gas are mixed at an appropriate ratio as well as during the normal period, but the burner 5 does not perform incomplete combustion.

제3도는 본 발명의 다른 실시예를 나타낸 것이고, 팬(6)의 실제의 풍압, 풍속, 풍량등을 검출회로(19)에 의해 검출하는 점을 제외하고는 제1도 및 제2도에 나타낸 것과 특별히 다른 것은 없다. 또한, 검출회로(19)로서 팬모터(18)의 회전수를 검출하는 것으로서, 종래 공지의 홀소자를 이용하는 것, 스트로보장치를 이용하는 것, 포토커플러를 이용하는 것, 타코 제너레이터를 이용하는 것, 등이 고려되며, 팬(6)의 풍압을 검출하는 것으로서 압력센서를 이용하는 것등이 고려되며, 팬(6)의 풍속을 검출하는 것으로서는 유속계를 이용하는 것 등이 고려되며, 팬(6)의 풍량을 검출하는 것으로서는 풍량계를 이용하는 것등이 고려된다.3 shows another embodiment of the present invention, except that the detection circuit 19 detects the actual wind pressure, wind speed, air volume, and the like of the fan 6, as shown in FIGS. There is nothing particularly different from that. In addition, as the detection circuit 19, the number of rotations of the fan motor 18 is detected, using a conventionally known Hall element, using a strobe device, using a photocoupler, using a taco generator, and the like. The use of a pressure sensor may be considered as detecting the wind pressure of the fan 6, and the use of a tachometer may be considered as the detection of the wind speed of the fan 6, and the amount of wind of the fan 6 may be detected. It is considered to use an air volume meter to do.

또한, 검출회로(19)로서 타코제너레이터를 사용하는 경우에는 제2도에 1점쇄선으로 나타낸 바와 같이 타코제너레이터로부터의 기전력을 직접 전자식 비례제어밸브(13)의 코일에 가하여 그 전자식 비례제어밸브를 구동시키는 것도 가능하게 된다.In addition, when using a taco generator as the detection circuit 19, as shown by the dashed-dotted line in FIG. 2, the electromotive force from a taco generator is applied directly to the coil of the electronic proportional control valve 13, and the electronic proportional control valve is applied. It is also possible to drive.

이와 같이 본 발명에 의할 때는 온도조절회로로부터의 출력신호의 크기에 따라 팬에 의한 연소용 공기량을 변화시키는 팬구동회로와, 팬 또는 팬모터의 구동상태를 검출하는 검출회로와, 이 검출회로로부터의 구동상태 검출신호의 크기에 따라 전자식 비례제어밸브의 통전전류를 변화시키는 비례제어밸브 구동회로등을 구비하여 응답성이 느린 팬 또는 팬모터의 구동상태에 따라서 응답성이 빠른 전자식 비례제어밸브의 통전전류를 변화시키도록 하였기 때문에, 팬모터의 실제의 회전수, 팬의 풍압등이 설정온도에 대응한 정상 회전수, 정상 풍압등이 될때까지의 과도적 기간중에도 버너에는 가스와 공기가 적절한 비율로 공급되게 되고, 상기 종래의 것과 같이 버너가 불완전 연소하는 일이 없고 안정성이 향상되는 효과를 가진다.As described above, according to the present invention, a fan driving circuit for varying the amount of combustion air by the fan in accordance with the magnitude of the output signal from the temperature control circuit, a detection circuit for detecting the driving state of the fan or the fan motor, and the detection circuit Proportional control valve driving circuit for changing the energizing current of the electronic proportional control valve according to the driving state detection signal from the electronic proportional control valve with quick response according to the driving state of a slow responsive fan or fan motor Since the current flow rate of the fan motor is changed, the gas and air are suitable for the burner during the transient period until the actual rotation speed of the fan motor, the fan wind pressure, etc. becomes the normal rotation speed corresponding to the set temperature, the normal wind pressure, etc. The ratio is supplied, and the burner does not incompletely burn as in the conventional art, and has an effect of improving stability.

Claims (1)

버너로의 가스공급로에 개재되는 전자식 비례제어밸브와, 이 버너에 연소용 공기를 공급하는 팬과, 이 버너의 부하온도 및 설정온도의 온도차에 다른 신호를 출력하는 온도조절회로와, 이 온도조절회로로부터의 출력신호를 입력신호로 하여, 이 입력신호의 크기에 따라 팬에 의한 연소용 공기의 공급량을 변화시키는 팬 구동회로와, 이 팬 또는 팬모터의 구동상태를 검출하는 검출회로와, 이 검출회로로부터의 신호의 크기에 따라 전자식 비례제어밸브의 통전전류를 변화시키는 비례제어밸브 구동회로로 이루어진 연소 제어장치.An electronic proportional control valve interposed in the gas supply path to the burner, a fan for supplying combustion air to the burner, a temperature control circuit for outputting a signal different from the temperature difference between the load temperature and the set temperature of the burner, and this temperature A fan drive circuit for changing the supply amount of combustion air by the fan according to the magnitude of the input signal, using the output signal from the adjustment circuit as an input signal, and a detection circuit for detecting the drive state of the fan or fan motor; A combustion control device comprising a proportional control valve drive circuit for changing an energized current of an electronic proportional control valve in accordance with the magnitude of a signal from the detection circuit.
KR1019860010929A 1986-02-18 1986-12-19 Combustion control device KR910002743B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP31974 1986-02-18
JP61031974A JPS62190322A (en) 1986-02-18 1986-02-18 Device for controlling combustion
JP86-31974 1986-02-18

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KR870008151A KR870008151A (en) 1987-09-24
KR910002743B1 true KR910002743B1 (en) 1991-05-03

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JP (1) JPS62190322A (en)
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DE (1) DE3705005A1 (en)
FR (1) FR2594524B1 (en)
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JPS62190322A (en) 1987-08-20
DE3705005A1 (en) 1987-08-27
GB2187000A (en) 1987-08-26
GB8703374D0 (en) 1987-03-18
FR2594524A1 (en) 1987-08-21
KR870008151A (en) 1987-09-24

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