KR100361149B1 - Water level controlling apparatus and method of siphon for condensing boiler - Google Patents

Abstract

The present invention relates to a condensing water receiving water level control device and method of the condensing boiler, the exhaust gas flowing into the room when the water level of the condensate receiving water condensed in the condensing boiler condensed to collect the condensate receiving water is below a certain level In addition to stopping the operation of the boiler and water replenishment in order to prevent the risk of condensate is not discharged over a certain level of water to stop the operation of the boiler by notifying the abnormal state has the advantage of not being incombustible boiler .

Description

Condensate receiving water level control device of condensing boiler and its method {WATER LEVEL CONTROLLING APPARATUS AND METHOD OF SIPHON FOR CONDENSING BOILER}

The present invention relates to a condensate receiving water level control device and method of the condensing boiler, and more particularly, to detect the water level of the condensate receiving water condensed water collected in the exhaust gas of the condensing boiler condensed to reach the indoor when the water level is below a certain level In order to prevent the incoming exhaust gas, the condensate water level of the condensing boiler not only stops the boiler operation and makes the water refill, but also stops the boiler operation when the water level exceeds a certain level because condensate is not discharged. It relates to a control device and a method thereof.

In general, boilers mainly used for heating and hot water supply in general households can be divided into oil boilers and gas boilers, depending on the fuel used. In the case of oil boilers, kerosene is used. In the case of gas boilers, liquefied petroleum gas (LPG) is used as a raw material, but since it contains less sulfur than LPG, liquefaction can be minimized. Most natural gas (LNG) is used.

These gas boilers can be divided into various types according to the control method or sealed state, and can be classified into condensing and non-condensing types according to heat sources for heating the heating water. The condensing method has a latent heat exchanger that heats the heating water by using the latent heat of the exhaust gas passing through the heat exchanger heat exchanger, together with a heat exchanger heat exchanger that directly heats the heating water using the heat burned by the burner. The noncondensing system has only a heat exchanger.

In the case of condensing boiler, the temperature of the exhaust gas is lower than that of the general boiler, so condensation occurs in the flue gas passing year. At this time, the generated condensate is collected in the condensate receiver and discharged to the outside through the condensate discharge hose connected to the sewer.

1 is a block diagram showing the interior of a typical condensing boiler.

As shown here, in the gas boiler 2, a blower 10 and a burner 12 are disposed above the combustor 4. As shown in FIG. The upper part of the combustor 4 is provided with the burner 12 which combusts the air supply and gas sucked in through the intake duct 6 according to the operation of the blower 10, and below the burner 12 in turn, the sensible heat part The heat exchanger 14 and the latent heat exchanger 16 are arranged. The sensible heat exchanger (14) heats the heating water in the process of exchanging heat by directly contacting the sensible heat generated from the burner, and the latent heat exchanger (16) uses latent heat generated during thermal contact with the exhaust gas. To heat the heating water.

Exhaust gas passing through the latent heat exchanger (16) is discharged to the outside through the exhaust duct (20), the condensate generated in the heat exchange process falls to the exhaust hood 18 is collected in the condensate receiver and discharged to the outside. In the lower left of the boiler, a circulation pump 22 for circulating the heating water is disposed. When the circulation pump 22 is operated, the heating water which has finished heating in the room flows into the heating water filter 24 through the line L1. The heating water filter 24 removes impurities contained in the heating water, and the filtered heating water is sent to the upper water separator 26. The water separator 26 is for discharging air contained in the heating water, and discharges the air through the upper air vent.

An overpressure prevention valve 32 is provided between the heating water filter 24 and the water separator 26 to prevent the pressure of the heating water from being excessively raised, and sends a part of the heating water to the expansion valve 48 to supply pressure. Will be adjusted. The heating water passing through the water separator 24 is supplied to the latent heat exchanger 16 through the line L2 by the operation of the circulation pump 22, and then heated while passing through the sensible heat exchanger 14. Discharged to (L3). Heating water discharged through the line (L3) is supplied to the room according to the operation of the three-way valve (28).

In the middle of the boiler is shown a heat exchanger that uses hot water for heating to obtain hot water. In accordance with the operation of the hot water flow switch 36, the cold water introduced through the line (L6) is heated in the process of passing through the hot water heat exchanger 34, and then discharged through the line (L7).

In the lower right part of the boiler, a gas supply device is installed. According to the operation of the gas valve 44, the gas introduced through the line L8 is supplied to the nozzle 8 above the combustor 4 through the line L9. At this time, the supply amount of gas is changed according to the operation of the air proportional control solenoid valve 46 to compensate for the supply amount according to the change of the outside air. The gas supplied is ignited and combusted by a spark delivered through the ignition transformer 42 and the ignition rod, and the series of combustion processes the controller 40 which receives an input signal from an indoor temperature controller 38 operated by a user. Controlled by

2 is a view showing a condensate receiving water level control device of a conventional condensing boiler.

As shown here, the first level sensor 100 for detecting the lowest level of the condensate 21, the second level sensor 110 for detecting the operating level of the condensate 21, Receives the values of the first water level sensor 100 and the second water level sensor 110 to the warning according to the water level and consists of a control unit 200 for controlling the operation and stop of the boiler.

The condensing water receiving water level control device of the condensing boiler made as described above detects the lowest water level of the condensate water receiving unit 21 by the first water level sensor 100 during the commissioning of the boiler so that the combustion gas is introduced into the room when the condensate is not detected. To prevent this, stop the boiler and warn you. Accordingly, when the driver supplies water to the condensate receiver 21 so that the condensed water is detected by the second water level sensor 110, the boiler can be operated.

Since the water contained in the exhaust gas generated by the operation of the boiler falls on the exhaust hood 18 and is collected in the condensate receiver 21, it is not necessary to continuously replenish water and exhaust gas through the U trap by the generated condensate. Is discharged to the outside through the exhaust duct 20 while preventing the flow into the room.

By the way, when there is no water in the condensate receiving 21 during the initial commissioning of the boiler, the boiler is controlled not to operate, but in order to operate the boiler, there is an inconvenience in that the driver must replenish the water directly.

In addition, when an abnormality occurs in the outlet of the condensate receiver 21 and the condensate is not smoothly discharged, the level of the condensate receiver 21 continues to rise so that the exhaust duct 20 is clogged and thus there is a problem in that the combustion is impossible. .

The present invention has been made to solve the above problems, the object of the present invention is to measure the minimum water level and the operating water level and the maximum water level of the condensation receiver of the condensing boiler so that the water replenishment can be made when the operation is below the minimum water level. In addition, the present invention provides a condensate receiving water level control device and a method for condensing boilers to stop the operation of the boiler when the maximum water level is exceeded.

1 is a block diagram showing the interior of a typical condensing boiler.

2 is a view showing a condensate receiving water level control device of a conventional condensing boiler.

3 is a block diagram showing a condensate receiving water level control apparatus of the condensing boiler according to the present invention.

4 is a flowchart sequentially illustrating a condensate receiving water level control method of the condensing boiler shown in FIG. 4.

-Explanation of symbols for the main parts of the drawings-

18: exhaust hood 20: exhaust duct

21: condensate collection

100,110,120: 1st to 3rd water level sensor

200: control unit 300: water refill valve

The condensate receiver water level control apparatus of the condensing boiler according to the present invention for realizing the above object has a first level sensor for sensing the lowest level of the condensate receiver, and a second water level sensing for sensing the operating water level of the condensate receiver. Sensor, a third level sensor for sensing the maximum level of the condensate receiver, a water fill valve for replenishing water with the condensate receiver, a first level sensor, a second level sensor, and a third level sensor It is characterized by consisting of a control unit that receives the value and warns according to the water level and controls the operation and stop of the boiler as well as the operation of the water filling valve.

In addition, the condensate receiving water level control method of the condensing boiler according to the present invention is a step of receiving a value of the first to third level sensor, and the level of the first water level according to the input value of the first to third level sensor When the water level is below the minimum level of the sensor, the water supply valve is operated to replenish water and to stop the boiler. The water level is changed to the second level according to the input values of the first to third level sensors. If the sensor is in the water level position, operate the boiler, stop the water fill valve, and maintain the boiler operation when the water level is at the lowest level position of the first level sensor and the maximum level position of the third level sensor. And stopping and warning the boiler when the water level exceeds the maximum water level position of the third water level sensor according to the input values of the first to third water level sensors. And characterized by comprising comprises a.

The present invention made as described above measures the water level of the condensate receiver during operation of the condensing boiler to operate the water refill valve when the water level is below the minimum level to automatically perform the water replenishment to operate the boiler when the proper level, the outlet of the condensate receiver If an abnormality occurs and the maximum water level is exceeded, the boiler is operated to stop the operation.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. In addition, the present embodiment is not intended to limit the scope of the present invention, but is presented by way of example only and the same parts as in the conventional configuration using the same reference numerals and names.

3 is a block diagram showing a condensate receiving water level control apparatus of the condensing boiler according to the present invention.

As shown here, the first level sensor 100 for detecting the lowest level of the condensate 21, the second level sensor 110 for detecting the operating level of the condensate 21, The third water level sensor 120 for detecting the maximum water level of the condensate 21, the water supplement valve 300 for replenishing the water to the condensate 21, the first water level sensor 100 and The controller 200 which receives the values of the second water level sensor 110 and the third water level sensor 120 and warns according to the water level and controls the operation and stop of the boiler as well as controls the operation of the water refill valve 300. )

The operation of the present invention made as described above will be described with reference to a flowchart sequentially illustrating a condensate receiving water level control method of the condensing boiler shown in FIG. 4.

First, the first level sensor 100 for detecting the lowest level of the condensate 21, the second level sensor 110 for detecting the operating level of the condensate 21 and the condensate 21 Receives the value of the third level sensor 120 for detecting the maximum level of water (S10).

Then the water level is determined to the level of the condensate receiving 21 (S20).

First, the case in which the water level of the condensate receiver 21 falls short of the minimum water level will be described (S30).

If the water level of the condensate receiver 21 is below the minimum level, the operation of the boiler is stopped (S31). Then, it warns that the water level of the condensate receiver 21 is below the minimum water level (S32). Then operate the water refill valve 300 to automatically make the water replenishment to the condensate (21) (S33).

As such, when the water replenishment is made, the value of the second water level detection sensor 110 for detecting the operating water level is input to determine the water replenishment situation (S34). As a result of receiving the value of the second water level sensor 110, the water level is compared with the operation level (S35). At this time, when the water level rises above the operating level stops the operation of the water filling valve 300 (S36). However, when the water level does not rise above the operating level to continue to operate the water fill valve 300 (S33).

Next, when the water level of the condensate receiver 21 is higher than the minimum water level and lower than the maximum water level (S40).

In this case, the boiler is operated in a section in which the normal operation of the boiler is performed (S41).

Next, when the water level of the condensate receiver 21 is not normally discharged due to an abnormality of the discharge port, the water level becomes higher than the maximum water level (S50).

In such a case, since the exhaust duct 20 is blocked and the combustion is impossible, the operation of the boiler is stopped before the operation (S51), and the warning is made to identify and repair the abnormality (S52).

As described above, the present invention detects the water level of the condensate receiver where moisture contained in the exhaust gas of the condensing boiler condenses and stops the operation of the boiler to prevent the exhaust gas flowing into the room when the water reaches a predetermined level. In addition to replenishment, the condensate is not discharged, so if the water level exceeds a certain level to stop the operation of the boiler to inform the abnormal state there is an advantage that the boiler becomes incombustible.

Claims (2)

A first water level sensor for detecting the lowest level of the condensate receiver, A second water level sensor for sensing an operating level of the condensate receiver; A third level sensor for sensing the maximum level of the condensate receiver, A water replenishment valve for replenishing water with the condensate receiver, Control unit for receiving the value of the first to third water level detection sensor to warn according to the water level and to control the operation and stop of the boiler as well as to control the operation of the water refill valve Condensate receiving water level control device of the condensing boiler, characterized in that consisting of. Receiving values of a first level sensor for detecting a minimum level, a second level sensor for detecting an operating level, and a third level sensor for detecting a maximum level; When the water level is below the lowest level position of the first water level sensor according to the value of the first to third water level sensor inputted above, the water refill valve is operated to replenish water and to stop the boiler. Steps, When the water level is in the operating water level position of the second water level sensor according to the value of the first to the third level sensor received above, the boiler is operated and the water filling valve is stopped and the water level is set to the first water level. Maintaining the operation of the boiler when maintained at the lowest level position of the sensor and the maximum level position of the third level sensor; Stopping and warning the operation of the boiler when the water level exceeds the maximum water level position of the third water level sensor according to the value of the first to third water level sensors received above Condensate receiving water level control method of the condensing boiler, comprising a.