KR100380897B1 - Water-controlling electronic valve driving apparatus and method for condensate neutralization of heat recovery boiler - Google Patents

Abstract

The present invention relates to an apparatus and method for neutralizing a condensate water in a heat recovery type boiler. In particular, the present invention relates to a hydroelectric valve for supplying direct water into a siphon through a bypass pipe. If the ignition miss occurs, the hydrant valve is not turned on and off.When the combustion is over, the hydrant valve is turned off, but it is not turned off during the operation of the fire extinguishing timer. ~ 4 hours) by turning off the receiver valve to prevent water from being drained continuously, so that the receiver valve is turned on / off even if an ignition miss occurs so that the durability and noise of the receiver valve can be prevented in advance. .

Description

Water-controlling electronic valve driving apparatus and method for condensate neutralization of heat recovery boiler

The present invention relates to a hydroelectric converter for condensate neutralization of a heat recovery type boiler (also referred to as a condensing boiler) and a method thereof, and more particularly, to install a burner on the top or side of a heat exchanger to direct a combustion gas flow downward. The hydronic valve is turned on / off even if an ignition miss occurs by properly controlling the hydro valve to supply neutralized acidic condensate from the heat exchanger of the heat recovery boiler designed for easy condensation heat exchange under the dew point temperature. It is invented to prevent the degradation of durability and the generation of noise due to the receiver side.

In other words, in the heat recovery type boiler configured to prevent the various components of the boiler from being corroded by condensate or causing environmental pollution by supplying neutralized direct water to the acid condensate and automatically discharging it. In order to neutralize the condensate of the heat recovery type boiler, which can prevent the deterioration of durability and on / off noise due to the unconditional operation after the salt detection despite the ignition miss. The present invention relates to a power receiver.

In general, a heat recovery type boiler refers to a boiler designed to facilitate condensation heat exchange by installing a burner on the top or side of a heat exchanger to make the combustion gas flow downward and to lower the dew point temperature.

Unlike the Bunsen-type boiler, this heat-absorbing boiler adopts a porous premixing method and installs a heat exchanger immediately after the flame surface to suppress nitrogen compound (N ₂ ) generation and emit less carbon monoxide (CO). The principle is to absorb sensible heat firstly and to absorb latent heat discharged to exhaust gas secondly, so that the temperature of exhaust gas of general boiler is 150-260 ℃, whereas that of heat absorption boiler is 50-100 ℃. The heat can be recovered to such an extent that a high efficiency of more than 95% can be obtained.

However, in such a heat absorption boiler, the water vapor contained in the exhaust gas condenses below the dew point temperature and is discharged to the outside of the heat exchanger. Since the acidity of the condensate is about PH2.8-PH3.5, the acid condensate If it comes in contact with the parts that make up the component, there is a risk of corrosion, and if such acid condensate is discharged to the sewer, it may cause environmental pollution.

Therefore, in the conventional heat recovery type boiler, a drain pipe is provided at the bottom of the heat exchanger, and at the same time, a siphon having several partitions integrally installed therein is provided in the upper part, and an overflow is formed between the cistern and the siphon. Pipes are installed to prevent contamination of sewer water, including corrosion of components due to acidic condensate.

However, as described above, the method of neutralizing and discharging condensate flowing into the siphon with the overflowed water in the cisterna should be diluted with the overflowed water from the siphon irrespective of the combustion of the boiler. It is not possible to supply the correct water to the condensed water which is completely neutralized by a large amount of water or the acidity remains intact (i.e., acidic enough to cause water pollution).

In addition, in recent years, instead of the overflow pipe connected between the siston and the siphon, the receiver and bypass pipe are installed between the direct water pipe and the siphon to use the system to operate the water heater in response to the combustion state of the boiler. have.

That is, when the condensate is generated, condensate is generated after the start of combustion. When the combustion begins, the direct current is supplied to the condensate collected by the siphon during combustion, so that acidic condensate and water are mixed to neutralize water. It is draining past the phone.

However, this configuration is turned on unconditionally when the combustion signal is activated irrespective of the detection of salt, and then turned off when the combustion is finished. For example, it is turned off during the fire extinguishing timer (5/10 minutes). When the power receiver side is turned on again, noise is generated due to frequent OFF / ON of the power receiver side, and there is a problem in that durability and lifespan of the power receiver side are reduced and shortened by various ON / OFF driving.

The present invention has been made to solve the conventional problems as described above, by direct dilution of the direct water in the acid condensate produced in the heat exchanger of the heat recovery type boiler to a neutral water to drive the hydride valve after salt detection after ignition Providing a method and a method for driving a transformer valve for neutralizing condensate in a heat recovery type boiler which can prevent the occurrence of a switch valve on / off and improve durability of the receiver valve as well as prevent noise from occurring. Its purpose is to.

The object of the present invention described above is that a hydronic valve which selectively supplies direct water into a siphon through a bypass pipe is driven after flame detection without driving during a combustion operation. When the combustion is over, turn off the hydrant valve, but do not turn it off while the fire extinguishing timer is running.However, if the fire extinguishing time is taken during the timer operation (5 minutes to 4 hours), the hydrant valve is turned off and the water is continuously drained. This can be achieved by controlling to prevent this from happening.

Therefore, the receiver valve itself, which neutralizes and drains the condensate (acid) generated during combustion, is driven after the detection of salt. Therefore, even if an ignition miss occurs, the receiver valve is turned on / off to prevent durability degradation and noise generation due to the receiver valve. It can be.

1 is a schematic configuration diagram of a heat recovery type boiler to which the present invention is applied.

2 is a block diagram of an apparatus of the present invention.

3 is a flowchart for explaining the method of the present invention.

Explanation of symbols on the main parts of the drawings

1,2: heating and hot water operation control unit 3: remote control mode setting circuit

4: Remote controller setting status output unit 5: Remote controller setting status input unit

6: A / D conversion unit 7: Hot water / heating operation determination unit

8: calorific value component 9: set temperature / tapping temperature comparison unit

10: fan motor PWM control unit 11: PWM output unit

12: fan control unit 13: fan

14: air supply amount counting unit 15: air supply amount detecting unit

16: temperature recognition unit 17: temperature voltage conversion unit

18: temperature sensor 19: water flow switch

20: hot water operation signal output unit 21: mode discrimination unit

22: combustion / fire extinguishing section 23: functional parts control

24: receiving valve control indicator 25: receiving valve control circuit

26: receiver side 27: three-way control commander

28: three-way control circuit 29: three-way

30: flame detector 31: combustion detection output

32: continuous control of the receiver side 34: gas electronic valve

37: circulation pump 43: igniter

50: remote control 60: control unit

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

1 is a schematic configuration diagram of a heat recovery type boiler in which an apparatus of the present invention is implemented, wherein a controller 60 is installed in a casing connected to a remote control unit and performs overall control operation of the boiler; A burner (33) having a blowing fan (13) and installed on the top or side of the heat exchanger (44) to burn fuel such as gas to heat the heating water and hot water while discharging the combustion gas downwardly; A gas electron valve 34 which determines whether to supply the amount of gas supplied to the burner 33; A heat exchanger 44 for heating heating water and hot water by using heat generated by the burner 33; A cushion 35 for storing heating circulation water; A circulation pump 37 for forcibly supplying the heated water separated from the water through the water separator 36 to the heat exchanger 44; A siphon (39) installed at a bottom of the heat exchanger (44) to neutralize by mixing acidic condensed water discharged from the heat exchanger (44) and water supplied from the direct pipe (38), and then discharging it to the outside; It is installed on the bypass pipe 40 connecting the water pipe 38 and the siphon 39 to be opened and closed in response to the output signal of the controller to selectively supply water to the siphon 39 side. An electron valve 26; A heating and hot water tapping temperature sensor 18 installed at each of the hot water discharge pipes 41 and the heating water discharge pipes 42 to detect hot water and tapping temperatures of the heating water; Three sides 29 for switching the discharge direction of hot water and heating water; An igniter 43 for generating an ignition flame in the burner 33; A flame detector 30 which detects whether normal combustion is made in the burner 33 after ignition; It is provided on the hot water discharge pipe 41 and consists of a water flow switch 19 for detecting the use of hot water.

Figure 2 shows a block diagram of the device of the present invention, wherein the remote control 50, the heating and hot water operation operation unit (1) (2) selectively operated by the user; A remote controller mode setting circuit unit 3 for outputting a heating or hot water mode setting signal in response to an operation signal output from the heating and hot water operation operation units 1 and 2; And a remote control setting state output section 4 for sending the output signal of the remote control mode setting circuit section 3 to the control section of the boiler body,

The control unit 60 includes a remote control setting state input unit 5 for receiving a remote control setting signal transmitted from the remote control unit 50; An A / D conversion unit 6 for converting an analog remote control setting signal output from the remote control setting state input unit 5 into a digital signal; A mode discriminating unit 21 which receives a state of the water flow switch 19 through the hot water operation signal output unit 20 and determines whether the water heater is in the hot water mode; A hot water / heating operation determination unit 7 which receives the output signals of the A / D converter 6 and the mode discriminating unit 21 to determine which mode of hot water / heating the user selects and uses; ; An air supply amount counter 14 which receives an air supply state by the fan 13 through the air supply amount detection unit 15 and calculates an air supply amount; A temperature recognition unit 16 which receives the heating and hot water temperatures detected by the temperature sensor 18 through the temperature voltage converting unit 17 and recognizes a heating and hot water temperature change value at that time; A calorie constitution unit 8 for calculating calorie values from the output values of the hot water / heating operation determination unit 7 and the air supply amount counter 14; Compared with the current heating and hot water temperature input through the temperature recognition unit 16 and the temperature required by the calorific value forming unit 8 compares the set temperature / hot water temperature to generate combustion and fire extinguishing signals corresponding to the result A comparison section 9; A fan motor PWM control unit 10 controlling the driving of the fan 13 through the PWM output unit 11 and the fan control unit 12 in response to the output signal of the set on / off temperature comparison unit 9; A continuous power interruption control unit 32 during heating receiving the output signal of the hot water / heating operation determination unit 7 and generating a control signal required for continuous control of the power supply side during heating; Combustion / fire extinguishing to receive combustion state detected by the flame detector 30 through the combustion detection output unit 31 and the output signal of the set temperature / melting temperature comparison unit 9 to determine whether combustion and extinguishing are performed. A discriminating unit 22; A functional part controller 23 for generating a control signal suitable for various functional parts in response to the output signals of the continuous receiving control part 32 and the combustion / extinguishing part during heating; A receiver valve control instruction unit 24 for outputting a control signal corresponding to the output signal of the functional part controller 23 to the receiver valve 26 through the receiver valve control circuit 25 to turn the receiver valve on / off; Three-way control instruction unit 27 for outputting the control signal corresponding to the output signal of the functional component control unit 23 to the three-way 29 through the three-way control circuit 28 so that the three-way is switched to hot water or heating mode. It is characterized by consisting of).

At this time, the A / D converter 6, the mode discriminating unit 21, the hot water / heating operation determining unit 7, the air supply amount counting unit 14, and the like in the control unit 60 indicated by a separate block on the drawing. Temperature recognition unit 16, calorific value configuration unit 8, set temperature / hot water temperature comparison unit 9, PWM output unit 11, fan motor PWM control unit 10, heating control valve continuous control unit 32 during heating The combustion / fire extinguishing determining unit 22, the functional part control unit 23, the power receiver side control instructing unit 24, and the three-way control instructing unit 27 may be incorporated in a microcomputer that is provided in the control unit.

3 shows a flowchart for explaining the method of the present invention.

According to this, if the operation switch of the boiler is "on" detecting the operation mode of the user selected the heating and hot water operation mode;

Switching the three sides 29 to the heating side if the heating mode is detected as a result of the detection and detecting whether the current heating water tapping temperature is lower than a user's set temperature;

As a result of the detection, when the current heating water tapping temperature is lower than the set temperature, the circulating pump 37 and the fan 13 are driven, and the combustion to turn on the gas electron valve 34, the igniter 43 and the proportional valve 45 is turned on. Detecting combustion salt after performing the operation;

If the salt is not detected as a result of the above detection, a salt detection error is indicated, and if salt is detected, the igniter 43 is turned off, and the power receiver valve 26 on the bypass pipe 40 is turned on to direct the water to the siphon 39. Supplying and continuously detecting whether the tapping temperature is above a set temperature;

Detecting that the heating water tapping temperature is equal to or higher than the set temperature, operating the fire extinguisher, turning off the gas electron valve 34 and detecting whether the water heater valve 26 is selected as "on";

If the detection result of the above, if the "on" selection state of the power receiver side 26 is maintained, otherwise it is turned off and if the digestion timer has elapsed, the step of returning to the initial step of comparing the heating water tapping temperature and the set temperature again; ;

Detecting the state of the water flow switch 19 in order to determine whether the hot water mode is switched to the hot water side and the hot water is used as a result of the detection;

As a result of the detection, when the water flow switch is turned on, the circulating pump 37 and the fan 13 are driven, and the combustion operation is performed after turning on the gas electron valve 34, the igniter 43, and the proportional valve 45. Continuing to detect salts;

When the salt is detected as a result of the above detection, the igniter 43 is turned off, the receiver side 26 on the bypass pipe 40 is turned on to supply direct water to the siphon 39, and the water flow switch 19 is turned off. Continuing to detect;

As a result of the detection, when the water flow switch is turned off, the gas electron valve 34, the water receiver valve 26, the pump 37, and the fan 13 are sequentially turned off, and the initial flow switch 19 returns to the on state detection step. It characterized by consisting of;

Referring to the effect of the present invention made of such a configuration and steps as follows.

First, when the user operates the heating operation control unit 1 installed in the remote controller 50 to set the heating use mode, the hot water / heating operation determination unit 7 in the control unit 60 installed in the boiler body recognizes this. And a fan control unit configured to control driving of the fan 13 through the calorific value configuration unit 8, the set-on / melt-temperature comparison unit 9, the fan motor PWM control unit 10, and the PWM output unit 11. At the same time, the driving signal for combustion is output to the gas electron valve 34, the proportional valve 45, the pump 37, the igniter 43, and the like, which are not shown in the block diagram, and the heating water Heated.

In addition, when the user operates the hot water operation control unit 2 installed in the remote controller 50 to set the heating use mode, the hot water / heating operation determination unit 7 in the control unit 60 installed in the boiler body operates hot water. When it is determined that the water flow switch 19 is "on" because the user uses hot water by receiving the state information of the water flow switch 19 inputted through the signal output unit 20 and the mode discriminating unit 21. After changing the three-direction 29 in the hot water direction through the three-direction control instruction unit 27 and the three-direction control circuit unit 28 performs a combustion operation according to the hot water mode.

On the other hand, as a method of supplying the normal direct water to modify the power receiver side 26 to the siphon 39 side to neutralize the condensate of the strong acid, the hot water / heating operation determination unit 7 as determined above, And the air supply state information of the fan 13 input through the air supply amount detecting unit 15 and the air supply amount counting unit 14 while performing a combustion operation according to the hot water mode from the calorific value configuring unit 8. Next, the tapping temperatures of the heating water and hot water inputted through the temperature voltage converting unit 6 and the temperature recognition unit 16 are inputted from the set temperature / heating temperature comparing unit 9 and compared with the set temperature. By outputting the control signal corresponding to the result and the output signal of the calorific value configuring section 8 to the combustion / fire extinguishing section 22, in response to the control signal output from the set temperature / heating temperature comparison section 9 The blowing amount of the fan 13 is adjusted and the combustion detection output unit 31 is passed through. When the state information of the flame detector 30 inputted by the controller is recognized as a combustion state, the power receiver side control circuit unit 25 in the power receiver side control instruction unit 24 according to a control signal output from the combustion / fire extinguishing unit 22. By operating the receiver side 26 through the normal acid for neutralization of strong acid is supplied to the siphon (39).

In this case, however, in the heating operation, the combustion / fire extinguishing determination of the combustion / fire extinguishing determination unit 22 is ignored in accordance with the determination of the continuous power interruption control unit 32 during heating. The power receiver valve 26 is controlled by the receiver 24 and the power receiver valve control circuit 25 so that the power receiver valve 26 is turned on or off during the heating operation regardless of the combustion or fire extinguishing timer.

In other words, in the heating mode, once the combustion operation is normally performed and the salt is detected, the receiver 26 is turned on, but the tapping temperature rises above the set temperature during the heating combustion as described above. After the time set by the fire extinguishing timer has elapsed, the tapping temperature and the set temperature are compared with each other again. In response to the selection, the receiver 30 is kept on or off.

Therefore, when the ignition valve is turned on and off even in the case of ignition miss, or when the combustion is finished in heating mode, the hydrant valve is turned off during the fire time (5/10 minutes). Life can be prevented due to noise generation and durability deterioration. However, if the fire extinguishing time is taken while the timer is running (5 minutes to 4 hours), the manual valve is turned off, so that the direct It can prevent the discharge.

Of course, in the hot water mode, the user turns on the hot water faucet, so once the water flow switch 19 is turned on, the combustion operation is normally performed, and when the salt is detected, the water heater valve 26 is turned on. Since it is off, it is possible to prevent the shortening of life due to noise generation and durability degradation.

As described above, according to the present invention, the ignition miss is driven after the salt detection is carried out after salt detection irrespective of both heating and hot water, by directly diluting an appropriate amount of direct water to acidic condensate generated in the heat exchanger of the heat recovery type boiler to make the neutral water. Prevents the receiver's valve from being turned on / off, but the heating timer is kept on during the heating mode, so that the receiver's valve is turned on / off unnecessarily. will be.

Claims (3)

Remote control 50 for remote control for the boiler, the heating and hot water operation operation unit (1) (2) selectively operated by the user; A remote controller mode setting circuit unit 3 for outputting a heating or hot water mode setting signal in response to an operation signal output from the heating and hot water operation operation units 1 and 2; And a remote control setting state output section 4 for sending the output signal of the remote control mode setting circuit section 3 to the control section of the boiler body, The control unit 60 installed in the main body of the boiler includes: a remote control setting state input unit 5 for receiving a remote control setting signal transmitted from the remote control unit 50; A mode discriminating unit 21 which receives a state of the water flow switch 19 through the hot water operation signal output unit 20 and determines whether the water heater is in the hot water mode; The user inputs an output signal from the remote controller setting state input unit 5 through the A / D conversion unit 6 and receives an output signal of the mode discriminating unit 21 and the user operates the hot water / heating mode. A hot water / heating operation determination unit 7 determining whether to select and use; An air supply amount counter 14 which receives an air supply state by the fan 13 through the air supply amount detection unit 15 and calculates an air supply amount; A temperature recognition unit 16 which receives the heating and hot water temperatures detected by the temperature sensor 18 through the temperature voltage converting unit 17 and recognizes a heating and hot water temperature change value at that time; A calorie constitution unit 8 for calculating calorie values from the output values of the hot water / heating operation determination unit 7 and the air supply amount counter 14; Compared with the current heating and hot water temperature input through the temperature recognition unit 16 and the temperature required by the calorific value forming unit 8 compares the set temperature / hot water temperature to generate combustion and fire extinguishing signals corresponding to the result A comparison section 9; A fan motor PWM control unit 10 controlling the driving of the fan 13 through the PWM output unit 11 and the fan control unit 12 in response to the output signal of the set on / off temperature comparison unit 9; A continuous power interruption control unit 32 during heating receiving the output signal of the hot water / heating operation determination unit 7 and generating a control signal required for continuous control of the power supply side during heating; Combustion / fire extinguishing to receive combustion state detected by the flame detector 30 through the combustion detection output unit 31 and the output signal of the set temperature / melting temperature comparison unit 9 to determine whether combustion and extinguishing are performed. A discriminating unit 22; A functional part controller 23 for generating a control signal suitable for various functional parts in response to the output signals of the continuous receiving control part 32 and the combustion / extinguishing part during heating; A receiver valve control instruction unit 24 for outputting a control signal corresponding to the output signal of the functional part controller 23 to the receiver valve 26 through the receiver valve control circuit 25 to turn the receiver valve on / off; Three-way control instruction unit 27 for outputting the control signal corresponding to the output signal of the functional component control unit 23 to the three-way 29 through the three-way control circuit 28 so that the three-way is switched to hot water or heating mode. The apparatus for neutralizing condensate water in the heat recovery type boiler, characterized in that consisting of). Detecting an operation mode of a heating and hot water operation mode when the operation switch of the boiler is “on”; As a result of the above detection, if the heating mode, the three-way (29) is transferred to the heating side, and if the current heating water tapping temperature is less than the user's set temperature, if it is below, it drives a series of components necessary for the heating and combustion operation and burns salt. Detecting; When the salt is detected as a result of the above detection, the igniter 43 is turned off, and when the tapping temperature is raised above the set temperature and the fire extinguishing is performed, the siphon 39 is turned on by turning on the power receiver valve 26 on the bypass pipe 40. Supplying direct water into the; Detecting the state of the water flow switch 19 in order to determine whether the hot water mode is switched to the hot water side and the hot water is used as a result of the detection; Driving a series of components required for hot water combustion operation and detecting combustion salts when the water flow switch is turned on as a result of the detection; When the salt is detected as a result of the above detection, the igniter 43 is turned off, the receiver side 26 on the bypass pipe 40 is turned on to supply direct water to the siphon 39, and the water flow switch 19 is turned off. Continuing to detect; As a result of the detection, when the water flow switch is turned off, the gas electron valve 34, the water receiver valve 26, the pump 37, and the fan 13 are sequentially turned off, and the initial flow switch 19 returns to the on state detection step. A method for driving a condensate neutralizer for condensate water, characterized in that consisting of; The method according to claim 2, Operating the fire extinguisher when the heating water tapping temperature is higher than the set temperature by the combustion operation in the heating mode, turning off the gas electron valve 34, and detecting whether the receiver valve 26 is selected as "on"; Maintaining the state if it is selected as the "on" selection state of the power receiver valve 26; otherwise, turning off and returning to the step of comparing the heating water tapping temperature with the set temperature, which is an initial process, after the extinguishing timer has elapsed; A method for driving a condensate neutralizer for condensate water of a heat recovery type boiler, characterized in that it is added.