KR102427113B1 - Operating controlling method of boiler using exhaust temperature - Google Patents

Abstract

The present invention relates to a boiler operation control method using the exhaust temperature, and as a result of checking the exhaust temperature change using the exhaust temperature that changes according to the combustion elapsed time during combustion of the boiler and a plurality of predetermined safety temperatures, the co-exhaust gas and overheat detection are detected. It is determined by stage (eg, low, medium, high temperature) and displays the empty space and overheating detection status to inform the boiler user, or after detecting the empty space and overheating, the boiler is safely extinguished and then the supply fan is operated to cool the heat exchanger and heat exchange When the overheating condition is resolved as a result of cooling the unit, the water supply is completed in the water channel part of the boiler feed water system.
According to the present invention, even if overheat detection is impossible due to malfunction of the overheat detection sensor for preventing overheating of the heat exchanger at the time of the boiler empty space, the exhaust temperature change is confirmed as a result of checking the exhaust gas temperature and overheat detection step by step (e.g., low temperature, medium temperature, high temperature) The exhaust duct is due to the phenomenon that the high-temperature heat condensed in the heat exchanger, which is already overheated, is discharged to the exhaust flue of the boiler at once in the boiler empty space, because it is determined by It is possible to solve the problem of burnout, and as a result, it is possible to prevent all injuries or fires caused by the inflow of exhaust gas into the room due to the burnout of the exhaust duct.

Description

Boiler operation control method using exhaust temperature

The present invention relates to a boiler operation control method, and more particularly, to a boiler operation control method using exhaust temperature.

In general, the boiler operates the supply fan during combustion operation to discharge exhaust gas through the exhaust flue to prevent overheating of the heat exchanger, and during fire extinguishing, the supply fan is operated for a predetermined time and then stopped to prevent overheating of the heat exchanger. .

In addition, when the boiler detects overheating of the heat exchanger by an overheat detection sensor (eg, bimetal) while the supply fan is operating during combustion operation, the boiler performs a safe fire extinguishing operation and stops the supply fan after operating for a predetermined time. to prevent

On the other hand, when there is no or insufficient water in the water channel of the boiler water supply system, the boiler performs an abnormal operation error when a predetermined air-fuel detection temperature is detected by an exhaust temperature sensor (eg, exhaust thermistor) disposed in the exhaust flue. and fire extinguishing works safely.

In the conventional boiler that operates as described above, in particular, when the overheat detection sensor malfunctions during unburned combustion, overheat detection becomes impossible, making it difficult to safely extinguish fire. As a phenomenon of being discharged into the exhaust flue of the boiler occurs and overheating of the heat exchanger cannot be detected, the detection of air-fuel by the exhaust temperature sensor is delayed and the safe fire extinguishing operation is delayed. There are problems that arise.

The burnout of the exhaust duct may cause personal injury or fire due to the inflow of exhaust gas into the room.

US 10-0973652 B1 US 10-1797649 B1

The present invention is to solve the conventional problems as described above, and an object of the present invention is to check the exhaust temperature change using the exhaust temperature that changes according to the combustion elapsed time during combustion of the boiler and a plurality of predetermined safety temperatures. By determining the empty space and overheating detection in stages (eg, low temperature, medium temperature, high temperature), the empty space and overheating detection status are displayed to notify the boiler user, or after detecting the empty space and overheating, the boiler is safely extinguished and then the supply fan is operated. To provide a boiler operation control method using the exhaust temperature to complete the water supply in the water channel of the boiler feed water system when the overheating condition is resolved as a result of cooling the heat exchanger and cooling the heat exchanger.

In order to achieve the object of the present invention as described above, in the boiler operation control method using the exhaust temperature according to the present invention, the controller controls the exhaust temperature that changes according to the elapsed combustion time of the boiler and a plurality of predetermined safety temperatures when the boiler is not in use. As a result of checking the exhaust temperature change using After the safety fire extinguishing operation, the supply fan is operated to cool the heat exchanger, and when the overheating condition is resolved as a result of cooling the heat exchanger, the water supply is completed in the water channel of the boiler water supply system.

In the boiler operation control method using the exhaust temperature according to the present invention, the controller determines the empty space and overheat detection step into a low temperature air space and overheat detection step, a medium temperature empty space and overheat detection step, and a high temperature empty space and overheat detection step characterized in that

In the boiler operation control method using the exhaust temperature according to the present invention, the process in which the controller determines the empty space and the overheat detection step as the low temperature empty space and the overheat detection step is a safety temperature for low temperature ST1 and a medium temperature among a plurality of predetermined safety temperatures A process of determining whether the difference in the safety temperature ST2 for low-temperature use is detected within the elapsed time Δt1 of combustion for low-temperature use, the process of starting combustion and controlling the amount of heat when there is a combustion request in the boiler standby state; thereafter, when the exhaust temperature detected by the exhaust temperature sensor of the boiler is detected as the safe temperature for low temperature ST1, starting the timer from that moment; And thereafter, if the difference between the safety temperature for low temperature ST1 and the safety temperature for medium temperature ST2 is detected within the predetermined elapsed combustion time Δt1 for low temperature, the current boiler status is determined as a low-temperature air-conditioning and overheating detection stage, and a danger phrase for a low-temperature space is displayed on the display device. The process of displaying; characterized in that it consists of.

In the boiler operation control method using the exhaust temperature according to the present invention, the process in which the controller determines the empty space and the overheat detection step as the intermediate temperature air space and the overheat detection step is, when the current exhaust temperature is detected as the safe temperature for medium temperature ST2 the process of starting to work the timer from the moment; Thereafter, the process of checking whether there is a decrease in the exhaust temperature within a predetermined elapsed time for combustion for medium temperature Δt2; And if there is no decrease in exhaust temperature thereafter, the current boiler status is determined as a medium-temperature co-fired and overheating detection stage, and from then on, the combustor is controlled to a forced minimum calorific value, and a hazard statement is displayed on the display device and a warning sound alerts the user to the danger. Informing process; characterized in that it consists of.

In the boiler operation control method using the exhaust temperature according to the present invention, in the process of confirming whether there is a decrease in the exhaust temperature, it is characterized in that the decrease in the exhaust temperature is confirmed by checking whether the following Equation 1 is satisfied.

In the boiler operation control method using the exhaust temperature according to the present invention, the process in which the controller determines the empty gas and overheat detection step as the high temperature empty gas and overheat detection step is when the current exhaust temperature is detected as the high temperature safety temperature ST3. The process of starting to work the timer from the moment; and after that, if the exhaust temperature above the safety temperature ST3 for high temperature is detected within a predetermined elapsed time of combustion for high temperature Δt3, the current boiler state is determined as a high temperature co-fired combustion chamber and overheat detection stage, and the boiler is safely extinguished; characterized in that it consists of .

In the boiler operation control method using the exhaust temperature according to the present invention, the process of the controller safely extinguishing the boiler and then cooling the heat exchanger and then replenishing water in the water channel part, when the boiler is safely extinguished, high temperature co-fired gas and overheating generating an error due to detection; operating an air supply fan to cool the heat exchanger in the high temperature co-fired gas and overheated state after an error occurs; The process of replenishing water in the water channel of the boiler water supply system when the exhaust temperature is detected to be below a predetermined safe temperature during the cooling combustion elapsed time Δt4 during which the supply fan operates; When the water supply to the water channel part of the boiler feed water system is completed, the process of enabling the error to be cleared from that time; characterized in that it consists of.

In the boiler operation control method using the exhaust temperature according to the present invention, the method for controlling the supply air fan for cooling the heat exchanger in the process of operating the supply fan is turning on the supply fan for a predetermined time and then turning off the supply fan for a predetermined time. It is characterized in that it is a method of repeating a predetermined number of times (eg, X seconds ON, Y seconds OFF, Z times).

In the boiler operation control method using the exhaust temperature according to the present invention, it is characterized in that it is checked whether the exhaust temperature is detected below the predetermined safe temperature for low temperature ST1 in the safe temperature detection process.

In the boiler operation control method using the exhaust temperature according to the present invention, if the water supply to the water channel part of the boiler water supply system is not completed, the controller makes it impossible to clear the error until the water supply is completed.

In the boiler operation control method using the exhaust temperature according to the present invention, if the water supply to the water channel part of the boiler water supply system is not completed, the controller guides the call to the boiler repair service center through a display device (eg, boiler remote control) characterized in that

According to the present invention, even if overheat detection is not possible due to malfunction of the overheat detection sensor for preventing overheating of the heat exchanger during the boiler empty space, as a result of checking the exhaust temperature change, the empty air chamber and overheat detection are detected step-by-step (e.g., low temperature, medium temperature, high temperature) The exhaust duct is due to the phenomenon that the high-temperature heat condensed in the heat exchanger, which is already overheated, is discharged to the exhaust flue of the boiler at once in the boiler empty space, because it is determined by It is possible to solve the problem of the burnout of the exhaust duct, and as a result, it is possible to prevent all injuries or fires caused by the inflow of exhaust gas into the room due to the burnout of the exhaust duct.

In addition, it is possible to provide the convenience of guiding to call the boiler repair service center when an error occurs due to high temperature air-conditioning and overheat detection.

1 is an embodiment showing an apparatus for performing a boiler operation control method using an exhaust temperature according to the present invention according to the present invention.
2 to 4 are flowcharts illustrating a boiler operation control method using exhaust temperature according to the present invention.
5 is a graph showing changes in exhaust temperature according to the present invention.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

The boiler operation control method using the exhaust temperature according to the present invention described below is not limited to the following examples, and anyone with ordinary skill in the art without departing from the gist of the technology claimed in the claims. It has the technical spirit to the extent that it can be implemented with any changes.

The apparatus for performing the boiler operation control method using the exhaust temperature according to the present invention is preferably installed in the boiler body, and may be installed as a separate device around the boiler body.

Referring to FIG. 1 , an apparatus 100 for performing a method for controlling a boiler operation using an exhaust temperature according to the present invention includes a controller 110 for performing a method for controlling a boiler operation using an exhaust temperature.

The controller 110 controls a combustion operation or a fire extinguishing operation of the boiler combustor 120 .

The controller 110 has a plurality of predetermined safety temperatures (eg, low-temperature safety temperature ST1, medium-temperature safety temperature ST2, high-temperature safety temperature) to determine the co-exhaust gas and overheating detection in stages (eg, low temperature, medium temperature, high temperature). Each time the temperature ST3) is detected, a time count is started to check the elapsed combustion time (eg, elapsed combustion time Δt1 for low temperature, elapsed combustion time Δt2 for medium temperature, elapsed combustion time Δt3 for high temperature, and elapsed combustion time Δt4 for cooling) and a timer (T).

The controller 110 receives the exhaust temperature from the exhaust temperature sensor 130 during the combustion or fire extinguishing operation of the boiler.

The exhaust temperature sensor 130 is preferably installed in the exhaust flue of the boiler, and detects the exhaust temperature while exhaust gas is discharged through the exhaust flue during the combustion or fire extinguishing operation of the boiler and transmits it to the controller 110 .

The controller 110 performs the boiler operation control method using the exhaust temperature according to the present invention, thereby confirming the change in the exhaust temperature using the exhaust temperature that changes according to the combustion elapsed time during combustion of the boiler and the plurality of safe temperatures. By determining the empty space and overheating detection in stages (eg, low temperature, medium temperature, high temperature), the empty space and overheating detection status are displayed to inform the boiler user, or after detecting the empty space and overheating, the boiler is safely extinguished and then the supply fan (140) ) to cool the heat exchanger (not shown), and when the overheating condition is resolved as a result of cooling the heat exchanger, the water supply is completed in the water channel of the boiler water supply system.

As shown in FIGS. 2 to 4, the controller 110 of the apparatus 100 for performing a method for controlling a boiler operation using an exhaust temperature according to the present invention configured as described above is a boiler operation control method using an exhaust temperature according to the present invention. is performed as follows.

For reference, FIG. 5 is a graph showing changes in exhaust temperature according to the present invention.

In FIG. 2, the controller 110 shows the process of performing the boiler operation control method (S100) using the exhaust temperature according to the present invention, the low-temperature co-fired gas and overheating detection process (S11 to S15-2) and the intermediate-temperature co-hydrogen and overheating detection process. (S16 to S17-3), high temperature co-fired combustion and overheat detection process (S18 to S19-2), and heat exchanger cooling and water replenishment process (S20 to S25) are exemplified.

In addition, as shown in FIG. 5, the timer T included in the controller 110 includes a plurality of safety temperatures, for example, low temperature, that are predetermined to discriminate the air-fuel and overheat detection in stages (eg, low temperature, medium temperature, high temperature). Each time the safe temperature for medium temperature ST1, the safe temperature for medium temperature ST2, and the safe temperature for high temperature ST3 is detected, a time count is started, and the combustion elapsed time, e.g. The time Δt3 and the elapsed combustion time Δt4 for cooling are confirmed.

The safety temperatures ST1, ST2, and ST3 have a magnitude relationship of ST1 < ST2 < ST3.

The low-temperature co-fired gas and overheat detection process (S11 to S15-2) shown in FIG. 2 will be described as follows.

In the low-temperature co-fired chamber and overheat detection process (S11 to S15-2), the difference (ST2-ST1) between the low-temperature safety temperature ST1 and the medium-temperature safety temperature ST2 among a plurality of preset safety temperatures (ST2-ST1) is It is discriminated whether it is detected within the combustion elapsed time Δt1.

In this process, the controller 110 first starts combustion when there is a combustion request in the boiler standby state (S11) (S12), and starts combustion and heat quantity control (S13).

Then, when the exhaust temperature detected by the exhaust temperature sensor 130 is detected as the safe temperature for low temperature ST1, the controller 110 starts to operate the timer T from that moment (S14).

Afterwards, when the difference (ST2-ST1) between the safe temperature for low temperature ST1 and the safe temperature for medium temperature ST2 (ST2-ST1) is detected within the predetermined elapsed combustion time Δt1 for low temperature (S15), the controller 110 detects the current boiler state in low temperature air-conditioning and overheating It is determined as a step (S15-1) and displays the danger phrase for the public place on the display device (S15-2).

The display device is a device for displaying the public hazard phrase, and is preferably a display device of a boiler remote control, and may be a display device installed separately in or around the boiler body.

In the low-temperature air-conditioning and overheat detection process (S11 to S15-2), the exhaust temperature detected by the exhaust temperature sensor 130 is not detected as the low-temperature safe temperature ST1 (S14), or the timer T is operated After starting (S14), if the difference (ST2-ST1) between the safety temperature for low temperature ST1 and the safety temperature for medium temperature ST2 (ST2-ST1) is not detected within the predetermined elapsed combustion time Δt1 for low temperature (S15), the controller 110 continuously monitors the exhaust temperature and Check whether the current exhaust temperature is detected as the safe temperature for medium temperature ST2, and perform the medium temperature co-exhaust gas and overheat detection process (S16 to S17-3).

In the low temperature co-fired gas and overheat detection process (S11 to S15-2), especially when there is no water in the water channel part of the boiler feed water system, when the boiler starts combustion, there is almost no heat transfer from the heat exchanger to the water channel part, so the exhaust flue from the heat exchanger When the exhaust temperature rises from 70℃ to 80℃ for a certain period of time, for example, when the exhaust temperature rises for a certain period of time from 70℃ to 80℃, it detects the low temperature empty space and overheating and only the low temperature empty space and overheating phrases mark and continue burning.

The reason is that the intake air supplied to the boiler in summer is usually hot, so even if there is water in the waterway, it can rise to 80℃. However, in the present invention, it is judged that it is impossible to reach from 70°C to 80°C within a short time (eg, within Δt1 of combustion elapsed time for low-temperature), so that combustion is continued without extinguishing the boiler, and thereafter, medium-temperature co-fired combustion and overheating are detected. After going through the process, high temperature co-fired room and overheat detection process, safety fire extinguishing and control of the air supply fan 140 is performed.

The intermediate temperature co-fired chamber and the overheat detection process (S16 to S17-3) shown in FIG. 3 will be described as follows.

The controller 110 continuously monitors the exhaust temperature to confirm that the current exhaust temperature is detected as the safe temperature for medium temperature ST2. As a result, when the current exhaust temperature is detected as the safe temperature for medium temperature ST2, the timer T is started from that moment ( S16), check whether there is a decrease in the exhaust temperature within the predetermined elapsed combustion time Δt2 for medium temperature and whether the above Equation 1 is satisfied to check the decrease in the exhaust temperature (S17). If there is no decrease in the exhaust temperature, the current boiler status Determining the medium temperature air space and overheating detection stage (S17-1), from then on, the combustor 120 is controlled to the forced minimum amount of heat (S17-2), the empty space hazard phrase is displayed on the display device, and a warning sound is a danger to the user informs (S17-3).

The display device is a device for displaying the public hazard phrase, and is preferably a display device of a boiler remote control, and may be a display device installed separately in or around the boiler body.

The warning sound is preferably output through a buzzer or a speaker installed in the boiler remote control, and may be output through a buzzer or a speaker separately installed in the boiler body or its vicinity.

In the medium temperature air-conditioning and overheat detection process (S16 to S17-3), the exhaust temperature detected by the exhaust temperature sensor 130 is not detected as the medium temperature safe temperature ST2 (S16), or the timer T is operated After starting (S16), if there is a decrease in the exhaust temperature within the predetermined elapsed time of combustion for medium temperature Δt2 (S17), the controller 110 continuously monitors the exhaust temperature and checks whether the current exhaust temperature is detected as the high temperature safety temperature ST3 The cow and overheat detection process (S18 to S19-2) is performed.

The high-temperature co-fired combustion and overheat detection process (S18 to S19-2) shown in FIG. 3 will be described as follows.

The controller 110 monitors the exhaust temperature and checks whether the current exhaust temperature is detected as the high-temperature safe temperature ST3. As a result, if the current exhaust temperature is not detected as the high-temperature safe temperature ST3, the process returns to the above-described S13 process, and the current exhaust temperature is high. When the safety temperature for high temperature ST3 is detected, the timer (T) starts operating from that moment (S18), and when the exhaust temperature above the safety temperature for high temperature ST3 is detected within the predetermined elapsed time of combustion for high temperature Δt3 (S19), the current boiler status is changed to high temperature. It is determined by the air-fuel and overheat detection stage (S19-1) and the boiler is safely extinguished (S19-2).

When the exhaust temperature detected by the exhaust temperature sensor 130 is not detected as the high temperature safety temperature ST3 (S19) in the high temperature co-fired gas and overheat detection process (S18 to S19-2), the controller 110 controls the low temperature Returning to the process (S13) of starting combustion and controlling the amount of heat in the air-fuel combustion and overheat detection process (S11 to S15-2), it is checked whether the exhaust temperature detected by the exhaust temperature sensor 130 is detected as the low-temperature safety temperature ST1. It is determined again (S14).

In the high temperature co-fired gas and overheat detection process (S18 to S19-2), after the boiler safely extinguishes fire, the controller 110 performs the heat exchanger cooling and water replenishment process (S20 to S25) successively.

The cooling and water replenishment process (S20 to S25) of the heat exchanger shown in FIG. 4 will be described as follows.

In the high-temperature air-fuel and overheat detection process (S18 to S19-2), if the boiler operates safely (SS19-2), the controller 110 generates an error due to the high-temperature air-conditioning and overheat detection (S20) .

In addition, after the error occurs (S20), the controller 110 operates the air supply fan 140 to efficiently cool the heat exchanger in a high-temperature co-exhaust gas and overheating state (S21).

At this time, it is preferable to use the air supply fan 140 installed in the boiler body as the air supply fan 140, and as described above, a separate air supply fan dedicated to cooling the heat exchanger for cooling the heat exchanger in the high-temperature empty space and overheated state. Can be used.

In addition, the control method of the air supply fan 140 for cooling the heat exchanger is a method (eg, X sec ON, Y sec OFF, Z times) is preferable.

When the exhaust temperature is detected to be below the safe temperature, for example, below the safe temperature ST1 for low temperature during the cooling combustion elapsed time Δt4 during which the supply fan 140 operates (S22), the controller 110 controls the heat exchanger to cool the air-exhaust gas and overheat It is determined that the detection state is resolved, and water is replenished in the water channel of the boiler feed water system (S23).

When the water supply to the water channel of the boiler water supply system is completed (S24), the controller 110 enables the error to be cleared from then (S25). For example, the user may release the error by pressing the reset button of the boiler.

At this time, if the water supply to the water channel of the boiler water supply system is not completed (S24), the controller 110 makes it impossible to cancel the error until the water supply is completed, so that the user does not burn the boiler again due to erroneous operation. , a display device (eg, a boiler remote control) may guide the call to a boiler repair service center.

In the heat exchanger cooling and water replenishment process (S20 to S25), when the error can be cleared state (S25), the controller 110 confirms the combustion request of the low temperature air-fuel combustion and overheat detection process (S11 to S15-2) It returns to the process (S12).

As can be seen from the above, according to the present invention, even if the overheat detection is impossible due to the malfunction of the overheat detection sensor for preventing overheating of the heat exchanger in the boiler empty space, as a result of checking the exhaust temperature change, For example, low-temperature, medium-temperature, high-temperature) can be determined to display the state of detection of air-fuel and overheat, or the boiler can be safely extinguished. It is possible to solve the problem that the exhaust duct burns out due to the exhaust phenomenon, and as a result, it is possible to prevent all injuries or fires caused by the inflow of exhaust gas into the room due to the burnout of the exhaust duct.

In addition, if the water supply to the water channel part of the boiler water supply system is not completed when an error occurs due to high temperature co-existing gas and overheat detection, the controller 110 calls the boiler repair service center through the display device (eg, boiler remote control). Guidance can be provided.

100: apparatus for performing boiler operation control method using exhaust temperature
110: controller 120: combustor
130: exhaust temperature sensor 140: air supply fan
T: timer

Claims (11)

As a result of the controller 110 checking the exhaust temperature change using the exhaust temperature that changes according to the combustion elapsed time and a plurality of predetermined safety temperatures in the low-temperature combustion chamber of the boiler, the low-temperature exhaust gas and overheat detection stage and the medium temperature By judging by the stage of detection of empty space and overheating and high temperature of airspace and overheating detection, the state of detection of empty space and overheating is displayed to inform the boiler user, or after detecting the empty space and overheating, the boiler is safely extinguished and then the supply fan 140 is turned off. When the overheating condition is resolved as a result of cooling the heat exchanger by
In the low-temperature air-conditioning and overheating detection step, it is determined whether the difference (ST2-ST1) between the low-temperature safety temperature ST1 and the medium-temperature safety temperature ST2 among a plurality of predetermined safety temperatures is detected within the elapsed time for low-temperature combustion Δt1 or not. Boiler operation control method using exhaust temperature, characterized in that. The process (S11 to S15-2) of claim 1, wherein the controller 110 determines the low-temperature air space and the overheat detection step as the low-temperature empty space and the overheat detection step
In the boiler standby state (S11), when there is a combustion request (S12), the process of starting combustion and starting control of the amount of heat (S13) and;
Thereafter, when the exhaust temperature detected by the exhaust temperature sensor 130 of the boiler is detected as the low-temperature safe temperature ST1, the process of starting the operation of the timer (T) from that moment (S14); and
Afterwards, if the difference (ST2-ST1) between the safety temperature for low temperature ST1 and the safety temperature for medium temperature ST2 (ST2-ST1) is detected within the predetermined elapsed combustion time Δt1 for low temperature (S15), the current boiler status is determined as a low-temperature air-fuel and overheat detection stage ( S15-1) the process of displaying the public hazard phrase on the display device (S15-2);
is made of,
When the exhaust temperature detected by the exhaust temperature sensor 130 is not detected as the low-temperature safety temperature ST1 (S14), or after starting the timer T (S14), the low-temperature safety temperature ST1 and the medium-temperature safety temperature ST2 If the difference (ST2-ST1) is not detected within the predetermined elapsed combustion time Δt1 for low temperature (S15), the exhaust temperature is continuously monitored to check whether the current exhaust temperature is detected as the safe temperature for medium temperature ST2 Boiler operation control method using exhaust temperature, characterized in that performing (S16 to S17-3). The process (S16 to S17-3) of claim 1, wherein the controller 110 determines the empty space and overheat detection step as the intermediate temperature air space and overheat detection step
a process (S16) of starting the timer (T) from the moment when the current exhaust temperature is detected as the safe temperature for medium temperature ST2 (S16);
Afterwards, the process of checking whether there is a decrease in the exhaust temperature within a predetermined elapsed time for combustion for medium temperature Δt2 (S17); and
After that, if there is no downward trend in the exhaust temperature, the current boiler status is determined as a medium-temperature co-fired furnace and overheating detection stage (S17-1), and from then on, the combustor 120 is controlled to a forced minimum amount of heat (S17-2), and a risk phrase for a non-heat furnace The process of displaying on the display device and notifying the user of the danger with a warning sound (S17-3);
Boiler operation control method using exhaust temperature, characterized in that consisting of. [4] The method according to claim 3, wherein in the step (S17) of checking whether there is a decrease in the exhaust temperature, the following equation

Boiler operation control method using exhaust temperature, characterized in that confirming the downward trend of exhaust temperature by checking whether The process (S18 to S19-2) of claim 1, wherein the controller 110 determines the air-fuel and overheat detection step as the high-temperature air-fuel and overheat detection step
a process of starting the timer (T) from the moment when the current exhaust temperature is detected as the high temperature safety temperature ST3 (S18); and
Afterwards, if the exhaust temperature above the safety temperature ST3 for high temperature is detected within the predetermined elapsed time of combustion for high temperature Δt3 (S19), the current boiler status is determined as a high temperature co-fired combustion chamber and overheat detection stage (S19-1), and the boiler is safely extinguished. (S19-2);
Boiler operation control method using exhaust temperature, characterized in that consisting of. The process of claim 1 or 5, wherein the controller 110 safely extinguishes the boiler and then cools the heat exchanger and then replenishes water in the water channel (S20 to S25),
The process of generating an error due to high-temperature co-exhaustion and overheat detection when the boiler is safely extinguished (S20);
After the error occurs (S20), the process of operating the air supply fan 140 to cool the heat exchanger in a high-temperature co-fired and overheated state (S21);
When the exhaust temperature is detected below a predetermined safe temperature during the combustion elapsed time Δt4 for which the supply fan 140 operates (S22), the process of replenishing water in the water channel of the boiler water supply system (S23);
When the water supply to the water channel part of the boiler water supply system is completed (S24), the process of enabling error release from then (S25);
Boiler operation control method using exhaust temperature, characterized in that consisting of. The method according to claim 6, wherein in the step (S21) of operating the air supply fan 140, the control method for the air supply fan 140 for cooling the heat exchanger is to turn on the air supply fan 140 for a predetermined time and then turn on the air supply fan for a predetermined time. (140) A boiler operation control method using an exhaust temperature, characterized in that the off-off is repeated a predetermined number of times. The boiler operation control method using the exhaust temperature according to claim 6, wherein in the safe temperature detection step (S22), it is checked whether the exhaust temperature is detected to be less than or equal to a predetermined safe temperature for low temperature ST1. [Claim 7] The boiler operation control using exhaust temperature according to claim 6, wherein if the water supply to the water channel of the boiler water supply system is not completed (S24), the controller 110 makes it impossible to clear the error until the water supply is completed. Way. The boiler using exhaust temperature according to claim 6, wherein if the water supply to the water channel of the boiler water supply system is not completed (S24), the controller 110 guides the call to the boiler repair service center through the display device. Driving control method. delete

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