KR930011418B1 - Controlling method for gas boiler - Google Patents

Controlling method for gas boiler Download PDF

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Publication number
KR930011418B1
KR930011418B1 KR1019910011312A KR910011312A KR930011418B1 KR 930011418 B1 KR930011418 B1 KR 930011418B1 KR 1019910011312 A KR1019910011312 A KR 1019910011312A KR 910011312 A KR910011312 A KR 910011312A KR 930011418 B1 KR930011418 B1 KR 930011418B1
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South Korea
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hot water
valve
gas
amount
waste gas
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KR1019910011312A
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Korean (ko)
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KR930002751A (en
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이상혁
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주식회사 금성사
이헌조
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)
  • Regulation And Control Of Combustion (AREA)

Abstract

a micom which controls the whole system, a gas valve which opens and closes according to the controlling signal and controls the amount of gas, a burner which generates an ignition, a heat exchanger in which a heat is exchanged from a cold water to a warm water, a flow meter, a pump which makes the warm water circulate, a flow controlling valve which controls the of the warm water, a warm water thermometer which measures the temp. of the warm water from the flow controlling valve, a duct which carries the combustion gas, an exhaust fan which emits the combustion gas and a combustion gas detector which measures the temp. of the combustion gas and inputs the data into the micom.

Description

가스보일러의 온수공급 비례 제어방법Proportional control method of hot water supply of gas boiler

제1도는 본 발명 가스보일러의 요부를 개략적으로 보인 구성도.1 is a configuration diagram schematically showing the main portion of the gas boiler of the present invention.

제2도는 제1도의 동작 설명에 대한 신호흐름도.2 is a signal flow diagram for explaining the operation of FIG.

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

1 : 열교환기 2 : 버너1: heat exchanger 2: burner

3 : 밸브 4 : 배기팬3: valve 4: exhaust fan

5 : 덕트 6 : 마이콤5: duct 6: micom

7 : 삼방변 8 : 유량조절밸브7: three-way valve 8: flow control valve

9 : 온수 감지기9: hot water detector

본 발명은 급탕기능을 갖는 가스보일러의 온수공급장치에 관한 것으로, 특히 난방모드시 온수온도 및 배기온도를 자동 감지하여 사용자가 세팅한 원하는 온도로 항상 일정하게 유지시킴과 아울러 원하는 원수를 사용할 수 있도록한 가스보일러의 온수공급 비례 제어방법에 관한 것이다.The present invention relates to a hot water supply device for a gas boiler having a hot water supply function, and in particular to automatically detect the hot water temperature and exhaust temperature in the heating mode to maintain a constant at a desired temperature set by the user and to use the desired raw water It relates to a proportional control method of hot water supply of a gas boiler.

일반적으로 사용되는 가스보일러는 가스를 연소시켜 불꽃을 발생하는 버너와, 그 버너의 점화에 의해 냉수를 온수로 교환하는 열교환기와, 그 열교환기에 냉수를 공급하는 펌프와, 상기 버너로부터 발생되는 폐가스를 외부로 배출함과 아울러 배기량을 조절하는 배기팬과, 상기 열교환기부터 열교환된 온수를 감지하여 배기팬의 회전수를 제어하는 온수센서로 구성되어 난방시 버너의 불꽃으로 열교환기를 가열시키게 되면 펌프에 의해 공급되는 냉수가 열교환기에서 가열되고, 이에따라 그 난방수가 룸파이프를 통해 순환되면서 실내를 난방하게 됨과 아울러 버너로부터 발생된 폐가스 배기팬에 의해 외부로 배출된다. 한편 사용자가 온수의 사용을 위해 온수모드를 설정하게 되면 급수공급관으로부터 공급되는 냉수가 온수용 열교환기를 통해 온수로 열교환되어 수도꼭지로 배출된다. 이때 온수센서가 열교환기로부터 열교환된 온수를 감지한 후 배기팬 및 연료주입밸브의 온/오프를 제어하여 온수온도를 조절하게 된다.Gas boilers generally used include a burner that burns gas to generate sparks, a heat exchanger for replacing cold water with hot water by ignition of the burner, a pump for supplying cold water to the heat exchanger, and waste gas generated from the burner. It consists of an exhaust fan that discharges to the outside and regulates the exhaust volume, and a hot water sensor that senses the hot water exchanged from the heat exchanger to control the rotation speed of the exhaust fan. The cold water supplied is heated in the heat exchanger, and thus the heating water is circulated through the room pipe to heat the room and discharged to the outside by the waste gas exhaust fan generated from the burner. On the other hand, when the user sets the hot water mode for the use of hot water, the cold water supplied from the water supply pipe is heat-exchanged with hot water through the hot water heat exchanger is discharged to the tap. At this time, the hot water sensor detects the hot water exchanged from the heat exchanger and then controls the on / off of the exhaust fan and the fuel injection valve to adjust the hot water temperature.

그러나, 이와 같은 종래 가스보일러는 배기팬의 회전수가 고정되어 있어 배기량이 항상 일정하고, 2차 입력조절밸브의 압력이 고정되어 있음으로 인해 임의적으로 압력조절이 불가능하게 되어 있다. 따라서 상기한 배기팬의 회전수 및 밸브내의 압력 고정으로 인하여 온수배기량에 따라 온수온도의 편차가 매우 크기 때문에 원하는 온수를 얻기가 어렵고, 또한 온수온도의 편차 즉, 배기팬 및 밸브가 턴-온될 때와 오프될 때의 온수온도의 편차를 줄이기 위해서 배기팬과 밸브를 온-오프 조절하게 됨으로써, 배기팬 및 밸브의 잦은 온/오프 동작으로 소음이 배가로 발생하게 되고,이로 인한 연료소비의 증폭 및 폭파점화의 원인이 되는 문제점이 있었다.However, such a conventional gas boiler has a fixed rotation speed of the exhaust fan so that the exhaust volume is always constant, and the pressure of the secondary input control valve is fixed, thereby making it impossible to arbitrarily adjust the pressure. Therefore, due to the rotation speed of the exhaust fan and the pressure fixed in the valve, it is difficult to obtain the desired hot water due to the large deviation of the hot water temperature according to the hot water exhaust amount, and also when the hot water temperature deviation, that is, the exhaust fan and the valve is turned on By controlling the exhaust fan and the valve on and off to reduce the deviation of the hot water temperature when turned on and off, the frequent on / off operation of the exhaust fan and valve, the noise is doubled, thereby amplifying fuel consumption and There was a problem that causes the explosion ignition.

본 발명은 이와 같은 종래의 문제점을 감안하여 난방모드시 온수감지기로 온수의 온도를감지하여 그 감지된 온수온도와 사용자의 설정온도를 비교 연산하여 온수온도가 설정온도보다 높거나 또는 낮으면 마이콤이 배기팬의 회전수와 밸브를 통한 가스량을 자동조절하여 온수가 항상 일정온도를 유지공급되도록 가스보일러의 온수공급 비례 제어장치를 안출한 것으로, 이하 본 발명을 첨부한 도면에 의거 상세히 설명하면 다음과 같다.The present invention, in view of the above-mentioned problems in the heating mode by detecting the temperature of hot water with a hot water detector in the heating mode by comparing the detected hot water temperature and the user's set temperature to calculate the hot water temperature is higher or lower than the set temperature of the microcomputer By automatically adjusting the rotational speed of the exhaust fan and the amount of gas through the valve to devise a proportional control device for the hot water supply of the gas boiler so that the hot water is always maintained at a constant temperature, when described in detail with reference to the accompanying drawings of the present invention as follows. same.

제1도는 본 발명 가스보일러의 요부를 개략적으로 보인 구성도로서, 이에 도시한 바와같이, 가스보일러의 전체시스템을 제어하는 마이콤(6)과, 상기 마이콤(6)의 제어신호에 의해 개폐되어 가스공급관(12)으로부터 공급되는 가스량을 조절하는 가스밸브(3)와, 상기 가스밸브(3)를 통한 가스를 연소시켜 불꽃을 발생하는 버너(2)와, 상기 버너(2)에서 연소되는 열량에 의해 급수공급관(13)으로부터 공급되는 냉수를 온수로 열교환하는 열교환기(1)와, 싱기 급수공급관(13)에 설치되어 열교환기(1)로 공급되는 냉수의 흐름을 감지하는 유량감지기(10)와, 상기 열교환기(1)의 출구측에 연결되어 난방수모드 및 온수모드로 절환하는 삼방변(7)과, 난방수모드시 상기 삼방변(7)으로부터 공급된 난방수를 룸(14)으로 순환시키는 난방환수관(15)과, 상기 삼방변(7)으로부터 공급된 난방수 및 룸(14)으로부터 공급된 난방수를 열교환기(1)에 순환시키는 펌프(16)와, 온수모드시 상기 열교환기(1)로부터 열교환된 온수를 외부로 배수시키는 온수배수관(17)과, 상기 온수배수관(17)에 설치되어 온수의 흐름을 제어하는 유량조절밸브(8)와, 상기 온수배수관(17)에 설치되어 유량조절밸브(8)를 통한 온수온도를 감지하여 마이콤(6)에 입력하는 온수감지기(9)와, 상기 버너(1)로부터 연소된 폐가스를 외부로 안내하는 덕트(5)와, 상기 덕트(5)에 설치되고 마이콤(6)의 제어신호에 의해 구동하여 폐가스를 외부로 배출하는 배기팬(4)와, 상기 덕트(5)로 배출되는 폐가스의 온도를 검출하여 마이콤(6)에 입력하는 폐가스 감지기(11)로 구성한다.1 is a configuration diagram schematically showing the main part of the gas boiler according to the present invention. As shown in FIG. 1, the microcomputer 6 controls the entire system of the gas boiler, and the gas is opened and closed by the control signal of the microcomputer 6. A gas valve 3 that regulates the amount of gas supplied from the supply pipe 12, a burner 2 that burns gas through the gas valve 3 to generate a flame, and a heat amount burned by the burner 2. A heat exchanger 1 for exchanging cold water supplied from the water supply pipe 13 by hot water, and a flow rate sensor 10 installed at the singer water supply pipe 13 to sense the flow of cold water supplied to the heat exchanger 1. And, connected to the outlet side of the heat exchanger (1) three-sided (7) for switching to the heating water mode and hot water mode, and the heating water supplied from the three-way (7) in the heating water mode room 14 Heating return pipe (15) circulated in the air and the three sides (7) A pump 16 for circulating the heated heating water and the heating water supplied from the room 14 to the heat exchanger 1, and a hot water drainage pipe 17 for draining the hot water heat exchanged from the heat exchanger 1 to the outside in the hot water mode. ), A flow rate control valve (8) installed in the hot water drainage pipe (17) to control the flow of hot water, and installed in the hot water drainage pipe (17) to sense hot water temperature through the flow control valve (8) The hot water sensor 9 input to 6), the duct 5 for guiding the waste gas burned from the burner 1 to the outside, and the duct 5 are installed and driven by the control signal of the microcomputer 6. And an exhaust fan 4 for discharging the waste gas to the outside, and a waste gas detector 11 for detecting the temperature of the waste gas discharged to the duct 5 and inputting it to the microcomputer 6.

이와 같이 구성된 본 발명의 작용, 효과를 상세히 설명하면 다음과 같다.Referring to the operation, effects of the present invention configured as described above in detail.

먼저 사용자가 온수를 사용하기 위해 온수모드를 설정한 상태에서 급수공급관(13)으로부터 냉수가 공급되면 유량감지기(10)는 냉수의 흐름을 감지하여 마이콤(6)에 인가하게 되고, 마이콤(6)은 유량감지기(10)의 출력신호에 따라 삼방변(7)을 제어하여 온수모드로 전환시킴과 아울러 펌프(16), 밸브(3) 및 배기팬(4)에 제어신호를 인가하여 구동을 시키게 되고, 상기 펌프(16)가 마이콤(6)의 제어신호에 의해 구동을 하게 됨에 따라 급수공급관(13)으로부터 공급되는 냉수가 열교환기(1)로 순환된다.First, when cold water is supplied from the water supply pipe 13 while the user sets the hot water mode to use hot water, the flow rate sensor 10 senses the flow of cold water and applies it to the microcomputer 6, and the microcomputer 6. In accordance with the output signal of the flow sensor 10 to control the three-sided (7) to switch to the hot water mode, and to apply a control signal to the pump 16, the valve (3) and the exhaust fan (4) to drive. As the pump 16 is driven by the control signal of the microcomputer 6, the cold water supplied from the water supply pipe 13 is circulated to the heat exchanger 1.

한편 가스공급관(12)으로부터 공급되는 가스는 상기한 밸브(3)를 통하면서 그 양이 조절되어 버너(2)에 인가됨으로써 그 버너(3)가 착화되어 밸브(3)로부터 공급되는 가스를 연소시켜 불꽃을 발생하게 되고, 동시에 버너(2)로부터 발생되는 폐가스는 배기팬(7)의 구동에 의하여 덕트(12)를 지나 외부로 배출되며, 상기 버너(2)의 불꽃으로 열교환기(1)는 펌프(16)의 구동에 의해 급수공급관(13)으로부터 들어오는 냉수를 가열시킴으로써 온수가 되며 그 온수는 온수배수관(17)에 설치된 유량조절밸브(8)를 통해 유량이 조절된 후 상기한 온수배수관(17)을 통해 수도꼭지로 배출되고, 이에따라 온수배수관(17)에 설치된 온수감지기(9)가 그 온수온도(WTH)를 감지하여 마이콤(6)에 입력하게 된다.On the other hand, the amount of gas supplied from the gas supply pipe 12 is adjusted through the above-described valve 3 and applied to the burner 2 so that the burner 3 is ignited to burn the gas supplied from the valve 3. The waste gas generated from the burner 2 is discharged to the outside through the duct 12 by the driving of the exhaust fan 7, and the heat exchanger 1 by the flame of the burner 2 The hot water is heated by heating the cold water coming from the water supply pipe 13 by the driving of the pump 16, the hot water is the hot water drain pipe after the flow rate is adjusted through the flow control valve (8) installed in the hot water drain pipe (17) Discharged through the faucet through 17, the hot water detector 9 installed in the hot water drain pipe 17 detects the hot water temperature W TH and inputs it to the microcomputer 6.

이때 사용자가 원하는 온수온도(QS)를 마이콤(6)에 설정하게 되면 그 마이콤(6)은 설정된 온수온도(QS)에 따라 배기팬(4)의 회전수 즉, 배기량 및 흡입공기량을 조절함과 아울러 밸브(3)로 공급되는 가스량을 조절하여 온수온도(WTH)를 적정온도로 유지시킨 후 그측정된 온수온도(WTH)와 설정온도 온수온도(QS)를 비교하여 일치하지 않으면 계속 배기팬(4)의 회전수 및 밸브(3)의 압력을 조절하고, 상기에서 온수배수관(17)의 온수온도(WTH)와 설정온도 온수온도(QS)가 일치하면 폐가스감지기(11)로부터 폐가스량을 감지하여 그 감지한 폐가스량(Co)이 마이콤(6)에 설정된 폐가스량(QCO)보다 크면 유량조절밸브(8)의 유량을 조절하여 원하는 온수온도(WTH)를 얻고, 상기에서 폐가스감지기(11)로부터 감지한 폐가스량(Co)이 설정된 폐가스량(QCO)보다 작거나 같으면 배기팬(4)의 회전수 및 밸브(3)의 압력을 현재 수준으로 계속 유지시키면서 온도감지기(9)로부터 온수온도(WTH)를 계속 감지하게 된다.At this time, when the user sets the desired hot water temperature Q S to the microcomputer 6, the microcomputer 6 adjusts the rotational speed of the exhaust fan 4, that is, the displacement and the intake air amount according to the set hot water temperature Q S. In addition, by adjusting the amount of gas supplied to the valve (3) to maintain the hot water temperature (W TH ) to the appropriate temperature, the measured hot water temperature (W TH ) and the set temperature of the hot water temperature (Q S ) is not matched If not, continue to adjust the rotational speed of the exhaust fan (4) and the pressure of the valve (3), and if the hot water temperature (W TH ) and the set temperature hot water temperature (Q S ) of the hot water drain pipe 17 is equal to the waste gas detector ( 11) When the amount of waste gas detected is detected and the detected amount of waste gas (Co) is greater than the amount of waste gas (Q CO ) set in the microcomputer (6), the flow rate of the flow control valve (8) is adjusted to adjust the desired hot water temperature (W TH ). The waste gas amount Co detected by the waste gas detector 11 is less than or equal to the set waste gas amount Q CO . The hot water temperature W TH is continuously detected from the temperature sensor 9 while maintaining the rotation speed of the surface exhaust fan 4 and the pressure of the valve 3 at the current level.

이상에서 상세히 설명한 바와 같이, 본 발명은 온수배수관에 설치된 온수온도감지기로 온수온도를 감지하여 그 감지된 온수온도와 사용자가 설정한 온수온도를 비교하여 온수온도가 설정온도보다 높거나 낮으면 마이콤이 배기팬의 회전수와 밸브를 통한 가스량을 조절하여 사용자가 설정한 온도로 항상 일정하게 유지시키게 되므로 연료절감 및 소음이 크게 감소되고, 또한 폐가스감지기로부터 감지한 폐가스량과 마이콤에 설정된 폐가스량이 일치하지 않을 경우에는 유량조절밸브를 조절함으로써 안정성과 신뢰성에 크게 기여할 수 있는 효과가 있는 것이다.As described above in detail, the present invention detects the hot water temperature with a hot water temperature sensor installed in the hot water drainage pipe and compares the detected hot water temperature with the hot water temperature set by the user, if the hot water temperature is higher or lower than the set temperature. Since the rotation speed of the exhaust fan and the amount of gas through the valve are kept constant at the temperature set by the user, fuel reduction and noise are greatly reduced, and the amount of waste gas detected by the waste gas detector does not match the amount of waste gas set in the microcomputer. If it is not, there is an effect that can greatly contribute to stability and reliability by adjusting the flow control valve.

Claims (1)

가스가 밸브(3)를 통해 버너(2)에서 연소되고 냉수가 펌프(16)를 통해 열교환기(1)에서 열교환되어 온수배수관(17)으로 배수되는 가스보일러에 있어서, 난방시 펌프(16)가 구동되고 버너(2)가 착화되면 마이콤(6)은 밸브(3)의 가스량 및 배기팬(4)의 회전수를 조절한 후 온수감지기(9)로부터 감지하여 그 감지된 온수온도(WTH)가 설정온도 온수온도(QS)와 같지 않으면 배기팬(4) 및 밸브(3)을 일치할때까지 계속 비례제어하고, 같으면 폐가스감지기(11)로부터 감지한 페가스량(Co)과 설정한 폐가스량(QCO)을 비교 연산하여 그 폐가스량(Co)이 크면 온수배수관(17)의 유량조절밸브(8)를 제어하고, 작거나 같으면 배기팬(4)의 회전수 및 밸브(3)의 가스량을 현수준으로 유지하도록 특징으로 한 가스보일러의 온수공급 비례 제어방법.In the gas boiler in which gas is combusted in the burner 2 through the valve 3 and cold water is heat-exchanged in the heat exchanger 1 via the pump 16 and drained to the hot water drain pipe 17, the pump 16 when heating. When the burner 2 is driven and the burner 2 is ignited, the microcomputer 6 adjusts the gas amount of the valve 3 and the rotation speed of the exhaust fan 4, and then detects it from the hot water sensor 9 to detect the detected hot water temperature (W TH). ) Is not equal to the set temperature of the hot water temperature (Q S ), the proportional control continues until the exhaust fan (4) and the valve (3) is matched, and if it is equal to the set amount of waste gas (Co) detected from the waste gas detector (11) If the waste gas amount Co is large and the waste gas amount Co is large, the flow rate regulating valve 8 of the hot water drain pipe 17 is controlled. If the waste gas amount Q CO is large, the rotational speed of the exhaust fan 4 and the valve 3 are the same. Hot water supply proportional control method of a gas boiler, characterized by maintaining the amount of gas at the current level.
KR1019910011312A 1991-07-04 1991-07-04 Controlling method for gas boiler KR930011418B1 (en)

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KR930011418B1 true KR930011418B1 (en) 1993-12-06

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