KR0129098B1 - Control apparatus for appreciation of uncommon flame in boiler - Google Patents

Abstract

The abnormal flame sensing controller is configured in the manner that the abnormal flame sensing signal for the interior of a combustion chamber in a frame rod frame sensing manner is supplied to the input(IN) of a combustion safety controller(P.T.R). Then, the abnormal flame sensed signal passes through resistors(R10,R12), a transistor(Q3) and a diode(D3) to operate a transistor(Q5) and a relay(RY-1), thereby driving a blasting fan(FAN). On the other hand, the flame sensed signal passes through a diode(D5) to operate a transistor(Q6) and a relay(RY-2), thereby driving a pump(PUMP).

Description

Abnormal flame detection control device of boiler

The present invention relates to an apparatus for detecting an abnormal flame of a boiler, and in particular, detects an abnormal flame and maintains the boiler in a check state even when the boiler is stopped. It is an abnormal flame detection control device that can prevent the fire caused by overheating of boiler by operating circulation pump (PUMP).

In general, when a boiler starts operating and reaches a set temperature, or when a boiler operation stop command is input due to an abnormal condition, the flame detection function is also stopped to detect abnormal flames due to gas leakage. There was a problem that the risk of existing.

The present invention has been invented to solve such a conventional problem, it is possible to detect the abnormal flame of the boiler due to the gas leakage even when the operation command of the boiler, and by driving the blower fan and the circulation pump by the detection signal gas It aims to prevent safety accidents caused by leaks and to be free from the danger of fire due to overheating of the boiler.

1 is a circuit diagram of the present invention.

* Explanation of symbols for main parts of the drawings

10: operation / stop condition determination command control unit 20: wind pressure detection unit

30: abnormal flame detection control unit 40: blower (FAN) control unit

50: circulating pump control unit 60: combustion safety control unit

70: gas leakage detection control unit

Referring to the configuration and operation of the present invention for achieving the above object in detail based on the accompanying drawings as follows.

1 is a circuit diagram of the present invention, the operation / stop condition determination command control unit 10 for judging the start or stop conditions of a conventional boiler and control the operation of the boiler in accordance with these commands, and the year according to the fan (FAN) rotation ( The leak pressure in the combustion chamber according to the operating pressure from the wind pressure detecting unit 20 capable of detecting wind pressure in the air path and checking whether the fan is rotated or exhausted, and the operation / stop condition determination command control unit 10. A blower controller 40 for driving a fan to discharge to the outside and a circulation pump controller 50 for driving a circulation pump (PUMP) for circulating hot water in a boiler, a flammability of the burner, The combustion safety control part 60 which removes a fault beforehand, and the gas leakage detection control part 70 which drive a blower at the time of gas leakage, and cut off a gas valve are comprised.

The operation / stop condition determination command control unit 10 controls a driving condition and a hot water (hot water) driving condition. When the output of the OP amplifier IC1 is high, the driving condition becomes a driving condition. When the capacitor R8 is charged to the capacitor C8 through the resistor R15 and the diode D7 and the operation signal is supplied to the base of the transistor Q5 through the resistor R16, the relay according to the amplified output signal ( The blower fan is operated by the RY-1) operation, and at the same time, when the operation signal is supplied to the base of the transistor Q6 through the resistor R17 of the circulation pump control unit 50 via the diode D8, the amplified signal is amplified. The circulation pump (PUMP) is operated by the relay (RY-2) operation by the output signal.

In the wind pressure detector 20, the fan is continuously rotated, and the wind pressure switch is turned on or turned off by an air pressure difference generated between two points of the year. In other words, if the air is stagnated from the outside in the flue from the outside, the contact is stopped (OFF) because there is no air pressure difference even if the fan (FAN) rotates. By using this principle, it is possible to check whether the fan (FAN) is rotated and the exhaust state, and the wind pressure detection state at this time through the resistance (R14), the photo-coupler (B) of the wind pressure detection unit 20 It is possible to detect whether the fan (FAN) is operating, wind pressure switch operation state, failure, etc. in advance to determine the operation of the combustion safety control unit 60 to be described in advance, and may be ignited by the furnace pressure and leakage gas To control the situation.

The abnormal flame detection control unit 30 is a control unit for detecting an abnormal flame even when the boiler is stopped operating, and a combustion safety controller (PTR) of the combustion safety controller 60 described later by the abnormal flame detection signal detected when the boiler is stopped. When it is input (IN), the combustion safety control unit 60 closes the gas valve and maintains the check (error) state to inform the user to receive after service (After Service), and the abnormal flame detection signal is the resistance (R1, R3). When R4, transistors Q1 and Q2, resistors R10 and R12, transistors Q3 and diode D3 are supplied to transistor Q5 and relay RY-1 of blower control unit 40, The blower FAN is operated by the operation of the relay RY-1 to discharge the leakage gas in the combustion chamber to the outside through the flue, and the abnormal flame detection signal is the diode D5 and the circulation pump control unit. Transistor Q6 and relay RY through resistor R17 of 50 When supplied to -2), the relay (RY-2) operates the circulation pump (PUMP) to circulate the hot water in the boiler tube to lower the temperature of the combustion chamber.

The blower control unit 40 drives the blower motor to discharge the leakage gas in the combustion chamber to the outside.

The circulation pump control unit 50 drives the circulation pump (PUMP) motor to circulate the hot water in the tube.

The combustion safety fisherman 60 is a combustion safety control device that increases the ignition of the burner, eliminates the risk of fire and explosion due to malfunction, and eliminates the failure factors in advance.

When the input voltage DC5 to 15V is input across the photocoupler A from the gas detector input terminal, the gas leakage detection controller 70 flows current through the resistor R20 and the light emitting diode LED to the photocoupler A. Current flows through the resistor R19 and the transistor Q4 and independently of the operating conditions of the operation / stop condition determination command control unit 10 of the boiler, the resistance of the diode D4 and the blower control unit 40 independently ( R16) operates the transistor Q5 and the relay RY-1 to operate the blower FAN and simultaneously close the gas valve through the diode D6.

As described above, the abnormal flame detection control device of the boiler of the present invention is the abnormal flame signal detected when the abnormal flame is detected during the operation or stop of the normal boiler is input to the combustion safety controller (PTR) to shut off the gas valve In addition to maintaining the inspection status, the fan can be operated to discharge the leaked gas to the outside to prevent safety accidents due to gas leakage, while operating the water circulation pump (PUMP). There is an advantage to prevent fire due to overheating.

Claims (2)

In a conventional boiler apparatus, a wind pressure detector 20 capable of detecting wind pressure in a flue along the fan rotation and checking whether the fan is rotated and exhausted, and an abnormal flame when the boiler is stopped To detect the abnormal flame detection control unit 30 and output a control signal, a blower control unit 40 for driving a fan (FAN) for releasing the leakage gas in the combustion chamber to the outside according to the operating conditions and to circulate the hot water in the boiler Ideal flame of the boiler comprising a circulation pump control unit 50 for driving the circulation pump (PUMP) and the combustion safety control unit 60 to increase the ignition of the burner and to eliminate the risk and failure due to malfunction in advance Sensing controls, According to claim 1, the abnormal flame detection control unit 30 is the abnormal flame signal detected at the start / stop of the boiler is input (IN) of the combustion safety controller (PTR) to close the gas valve to maintain a check state, this abnormality The flame detection signal is transmitted through the resistors R1, R3, and R4, the transistors Q1 and Q2, the resistors R10 and R12, the transistor Q3, the diode D3, and the resistor R16 of the blower controller 40. The blower FAN is operated by operating the Q5 and the relay RY-1, and the transistor Q6 and the relay RY-2 through the resistor R17 of the diode D5 and the circulation pump control unit 50. Boiler abnormal flame detection control device, characterized in that for operating the circulating pump (PUMP) by operating.