KR100422855B1 - Condensate water dilution and drainage apparatus for condensing boiler - Google Patents

Abstract

The present invention relates to a condensate dilution and automatic discharge device of the heat recovery type boiler, in particular, in the condensate dilution device of the heat recovery type boiler, the lid body 74 located above the condensate storage chamber (72) of the condensate storage container (7) A water supply hole 77 for supplying water is further formed on the water discharge chamber 73 through an upper end of the partition wall 71 in a state in which the condensate and water are directly diluted in the condensate storage chamber 72. Acid condensate is discharged undiluted with water, preventing boiler components from corrosion or water pollution. In addition, even if back pressure or excessive condensate is generated, it is automatically In addition, if necessary, all the water in the container can be discharged to the outside. To one condensate discharge failure, and freezing and so on of the storage container itself caused since the water remaining in the container freezing can be prevented in advance, so that also can prevent erroneous linkage of the condensate reservoir itself and the cover when assembled in advance.

Description

CONDENSATE WATER DILUTION AND DRAINAGE APPARATUS FOR CONDENSING BOILER}

The present invention relates to a condensate dilution and automatic discharge device of a heat recovery type boiler (also called a condensing boiler), and more particularly, to install a burner on the top or side of the heat exchanger to direct the flow of the combustion gas to the top of the dew point temperature. By diluting the condensed water smoothly by directly supplying the condensate generated in the heat exchanger of the heat recovery type boiler designed to facilitate the condensation heat exchange, the water supplied in response to the heat amount of the heat exchanger is automatically discharged to the neutral state. It is possible to prevent corrosion of various parts constituting the boiler or causing environmental pollution by acidic condensate, and to prevent freezing of condensate storage container in winter, and to prevent back pressure or excessive condensate Figure of the evacuation chamber formed separately from the water discharge chamber at the time of occurrence To the invention so as to automatically discharged through the hole to the outside.

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 Bunsen boilers, these heat-absorbing boilers adopt a porous premixing method and install a heat exchanger immediately after the flame to suppress the generation of nitrogen compounds (N ₂ ) and to reduce the emissions of carbon monoxide (CO). It can be called a boiler. 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 ℃. By recovering heat at about 100 ° C, 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 components that make up the corrosion, and if such acid condensate is discharged to the sewer there is a risk of environmental pollution.

Therefore, the applicant of the prior art inserts a neutralizing agent such as calcium carbonate at the bottom of the heat exchanger in 1997 Korean Patent Application No. 82285 (Publication No. 98-79579), and a drain pipe is provided at one side and an upper side therein. The drain is provided with a drain storage container integrally provided with several partition walls, and an overflow pipe is installed between the cisterns and the drain storage container to prevent contamination of sewage water, including corrosion of components due to acidic condensate.

However, the drain storage container used in the condensate dilution and discharge device having such a configuration is formed by the condensate storage chamber, the overflow water inlet chamber and the diluted water discharge chamber through three partition walls formed integrally from the upper side toward the lower portion. The fluid is moved through the gap formed between the bottom end of each partition wall and the bottom plate, and the upper end of the discharge pipe is configured to be located above the water discharge chamber so that it can be discharged only when the water level rises above a certain level. .

However, when the condensate storage container having such a configuration is molded through injection or blower molds, the workability is very difficult to increase the production cost of the product, and the water is not completely discharged and maintains a certain level in winter. If the boiler is not operated for a long time, stagnant water in the condensate storage container may freeze and the water itself may not be discharged, or the container itself may freeze. Since there is no means of avoiding water (ie, the water is discharged only through the discharge port), all the water in the container may not flow out through the discharge port, but may flow out through the air hole. Water is supposed to move along the bottom of the vessel into the water discharge chamber Has a disadvantage, such as the condensed water is not diluted and the number of overflows along the bottom surface of the container is moved chamber water discharge that might be discharged to the outside.

Therefore, recently, as shown in FIGS. 1 and 2, the heating water passage system and the condensate dilution and automatic discharge device of the heat recovery type boiler have a heat dissipation pipe installed at regular intervals with a heating water supply port, a heating water return port, and a heat dissipation fin. A heat exchanger (2) which is heated by a burner (1) using oil or gas as fuel and heats the water supplied therein to a desired temperature; A burner (1) installed at an upper surface or a side of the heat exchanger (2) to make the combustion gas downward; A heating pipe (3) zigzag-pipeted to the floor of the room and heating the room by using the heat of water supplied from the heat exchanger (2); A cistern 4 having a predetermined volume; A circulation pump 5 for forcibly supplying water required for heating from the cistern 4 to the heat exchanger 2 side; A water supply valve 6 for continuously supplying supplemental water to the cistern 4; The condensate storage chamber 72 and the water discharge chamber 73 provided with the drain port 80 are integrally provided through the central partition wall 71 protruding upward from the bottom surface, and the upper surfaces of the two chambers have condensate inflow holes ( 75 and the overflow pipe 8 and the insertion hole 76 are formed in the bottom of the heat exchanger (2) acid condensate discharged from the heat exchanger (2) water through the partition wall (71) When it flows into the discharge chamber 73, it may be comprised by the condensate storage container 7 etc. which mix and dilute the overflow water of the cistern 4 in this case.

However, the condensate storage container having such a configuration also has no means to completely discharge the water in the condensate storage chamber. If the boiler is not operated for a long time in winter, the condensed water in the condensate storage chamber may freeze and the container itself may freeze. In addition, there is no fear that water is not discharged due to back pressure and there is no means to avoid it in the event of backflow or excessive condensate, so that all the water in the container may not flow through the outlet and flow out through the air hole. In particular, the overflow of the cisterns supplied to neutralize the condensate does not flow directly into the condensate storage compartment, but rather the overflow of condensate that flows into the water discharge chamber over the side wall by flowing into the water outlet formed at the bottom. Numbers and embryos not exactly diluted There is a problem that sits causing water pollution.

The present invention has been made in order to solve the above problems, by diluting a direct amount of the direct water directly to the acid condensate generated in the heat exchanger of the heat recovery type boiler to automatically discharge the acid in the state of neutral water Its main purpose is to provide complete condensate dilution and automatic drainage of heat recovery type boilers that can completely prevent corrosion of boiler components by condensate and prevent water pollution from acidic water.

Another object of the present invention is to automatically discharge to the outside through the escape hole of the evacuation chamber formed separately from the water discharge chamber even when the back pressure or excessive condensate is generated, and also if necessary to discharge all the water in the container to the outside The drain hole is formed on the bottom surface of the condensate storage container to freeze the water remaining in the condensate storage container when the boiler is not operated for a long time in winter, thus preventing condensate discharge defects and freezing of the storage container itself. It is to provide a condensate dilution and automatic discharge device of a heat recovery type boiler that can prevent mis-combination of the storage container itself and the lid.

An object of the present invention described above, the heating water supply port, the heating water return port and the heat dissipation fin is provided with a heat dissipation pipe installed at a predetermined interval and is heated by the burner and exhaust heat, etc. using oil or gas as fuel and supplied into the water A heat exchanger for heating the to a desired temperature; A burner installed at an upper surface or a side of the heat exchanger to make a combustion gas in a downward direction; A heating pipe that is zigzag-piped to the floor of the room and heats the room by using the heat of water supplied from the heat exchanger; A cistern having a predetermined volume; A circulation pump for forcibly supplying water required for heating from the cistern to the heat exchanger; A water supply valve for continuously supplying supplemental water to the cistern; A condensate storage container having a condensate storage chamber and a water discharge chamber provided with a drainage port are integrally formed through a central partition wall protruding upward from the bottom surface, and a condensate inflow hole and an overflow pipe insertion hole are formed in the upper surfaces of the two chambers. In the condensate dilution and automatic discharge device of the heat recovery boiler consisting of

Another water supply hole for supplying water is formed on the lid body positioned above the condensate storage chamber of the condensate storage chamber, and the condensate and water are diluted in the condensate storage chamber, and the condensate and water are diluted. Based on what is going to flow,

Forming a drain hole selectively opened and closed by a bolt on a bottom surface of the condensate storage chamber, and forming a partition wall lower than the central partition wall so that an interior of the water discharge chamber is partitioned into an evacuation chamber provided with a water discharge chamber itself and an auxiliary drain hole; By means of the coupling means of the lid and the storage container itself, it can be achieved by additionally differently forming four elastic locking pieces and the formation position of the locking projections formed on the four slopes, respectively.

Therefore, since the direct water is directly supplied to the condensate itself and diluted, the acidic condensate is discharged without dilution in the water, thereby preventing the boiler components from corrosion or water pollution. In addition, even if a back pressure or excessive condensate is generated, It can be automatically discharged to the outside through the auxiliary drain hole, and if necessary, all the water in the container can be discharged to the outside, so that the water remaining in the condensate storage container freezes when the boiler is not operated for a long time in winter. It is possible to prevent the freeze and the like of the storage container itself in advance, and to prevent inadvertent coupling between the condensate storage container itself and the lid body during assembly.

1 is a heating channel system diagram of a conventional heat recovery type boiler.

Figure 2 is an enlarged view of the main portion of the conventional condensate dilution and automatic discharge device.

Figure 3 is an enlarged view of the main part according to an embodiment of the present invention.

Figure 4 is an exploded perspective view of the main portion of the condensate storage container of the present invention.

Figure 5 (a) (b) is a front and side cross-sectional view of the condensate storage container of the present invention.

Explanation of symbols on the main parts of the drawings

2: heat exchanger 4: cistern

6: water supply valve 7: condensate storage container

8: overflow tube 9: receiver side

10 pipe 71,78 bulkhead

72: condensate storage chamber 73: water discharge chamber

74: cap body 75: condensate inlet hole

76: overflow pipe insertion hole 77: water supply hole

79: evasion chamber 80: drain

81: auxiliary drain hole 82: drain hole

83: bolt 7a: protrusion

71a: stepped portion 74a: elastic locking piece

77a: assistant

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

Figure 3 shows an enlarged view of the main part according to an embodiment of the present invention,

Figure 4 is a perspective view of the main part of the condensate storage container of the present invention cutaway exploded, Figure 5 (a) (b) shows a front and side cross-sectional view of the condensate storage container of the present invention.

According to this, there is provided a heat exchanger (2) which is heated by a burner (1) using oil or gas as fuel and heats the water supplied therein to a desired temperature; A burner (1) for discharging the combustion gas downward from the top or side of the heat exchanger; A heating pipe (3) for heating the room by using heat of water supplied from the heat exchanger (2); A cistern 4 having a predetermined volume; A circulation pump 5 for forcibly supplying water from the cistern 4 to the heat exchanger 2 side; A water supply valve 6 for continuously supplying supplemental water to the cistern 4; The two chambers 72 and 73 are divided into a condensed water storage chamber 72 and a water discharge chamber 73 provided with a drain hole 80 on the bottom surface through a central partition wall 71 protruding upward from the bottom surface. In the condensate dilution device of the heat recovery type boiler consisting of a condensate storage container (7) having a condensate inlet hole 75 and the overflow pipe (8) insertion hole 76 is formed on the upper surface of

A water supply hole 77 for supplying water is formed on the lid 74 located above the condensate storage chamber 72 of the condensate storage chamber 7 to condense water in the condensate storage chamber 72. And it is characterized in that the basic water so that it is overflowed to the water discharge chamber 73 through the upper end of the partition wall 71 in the diluted state.

In addition, the auxiliary pipe 77a is formed to protrude from the bottom of the water supply hole 77 to the inside of the condensate storage chamber 72, and the temperature of the heat exchanger 2 corresponds to the temperature of the water supply hole 77. In response to a control signal of a microcomputer to generate a control signal, connecting the output pipe 10 of the receiver side 9 to supply the direct water supplied through the water supply valve 6 to the condensate storage chamber 72. It is an additional feature.

In addition, the bottom surface of the condensate storage chamber 72 is formed with a drain hole 82 that is selectively opened and closed by a bolt 83, the interior of the water discharge chamber 73 is the water discharge chamber 73 itself and A partition wall 78 lower than the central partition wall 71 is formed to be partitioned into the avoidance chamber 79, and an auxiliary drain port 81 is formed on the bottom surface of the avoidance chamber 79, but the condensate storage chamber 72 and the water are formed. In the central partition 71 partitioned by the discharge chamber 73, a stepped portion 71a is formed on the top surface of the partition communicating with the water discharge chamber 73 so that the condensed water overflows only to the water discharge chamber 73 side. It is another additional feature.

In addition, with respect to the center line of the transverse longitudinal direction of the four elastic locking pieces (74a) and the locking projections (7a) protruding on each slope by the coupling means of the lid 74 and the condensate storage container 7 itself One or both pairs of the engaging pieces 74a and the engaging projections 7a on the opposite sides are formed at different positions to prevent the misalignment of the lid 74 and the storage container 7. Another additional feature.

Referring to the operation and effect of the device of the present invention configured as described above are as follows.

First, in the present invention, the condensed water storage chamber 72 and the water discharge chamber 73 are partitioned through the central partition wall 71 protruding upward from the bottom surface, and the condensed water inflow hole 75 and overflows on the lid 74. An acid condensed water discharged from the heat exchanger 2 is installed at the bottom of the heat exchanger 2 and has a configuration in which an insertion hole 76 is formed. When it flows in, the water other than the above overflow water on the lid body 74 above the condensate storage chamber 72 of the condensate storage container 7 which dilutes and dilutes the overflow water of the cistern 4. In order to supply (general water directly supplied to the supplemental water of the cistern in the present invention), a water supply hole 77 is additionally formed to directly partition the condensate and water in the condensate storage chamber 72. Overflow into the water discharge chamber 73 through the upper end of the 71 One will be.

Of course, as mentioned above, the water supply valve 6 and the water supply hole 77 may be connected through a pipe to supply the direct water to the condensate storage chamber 72 through the water supply hole 77. However, in this case, since the opening and closing amounts of the water supply valve 6 cannot be automatically adjusted, a proper amount of the direct water corresponding to the generation amount of the condensate cannot be supplied, so that the illustration of the heat exchanger 2 is omitted in the middle of the pipe in the present invention. The receiver side 9 is operated in response to the control signal of the microcomputer that generates the control signal in response to the temperature of.

Therefore, as shown in the related art, the water overflowed from the cistern 4 is not supplied to the water discharge chamber 73, but is controlled by a microcomputer that generates a control signal in response to the temperature of the heat exchanger 2 (9). Direct water supplied through) is directly supplied to the condensate storage chamber 72 and diluted so that the condensate itself overflows to the water discharge chamber 73 to completely prevent discharge from the drain through the drain 80. In the initial boiler operation before the condensate is generated in the heat exchanger (2), the hydrant valve (9) is operated to fill the condensate storage chamber (72) to some extent, so that part of the exhaust gas discharged from the initial heat exchanger (2) is operated. Since it is discharged to the outside through the condensate storage chamber 72, the occurrence of environmental pollution due to it can also be prevented in advance.

On the other hand, when the end portion of the output pipe 10 of the metal material in the state in which only the water supply hole 77 is formed on the lid body 74 is coupled to the direct water due to the operation of the receiver side (9) condensate storage chamber ( 72) the sound of water is generated and dilution with condensate is not performed smoothly.

However, when the end of the output pipe 10 is inserted deep into the inside of the condensate storage chamber 72, the metal pipe itself may be oxidized by the acidic condensate.

Therefore, in the present invention, the auxiliary pipe 77a is formed to protrude from the bottom of the water supply hole 77 to the inside of the condensate storage chamber 72 on the lid 74, thereby supplying the pipe 10. Direct water itself is mixed into the condensed water through the auxiliary pipe (77a) contained in the condensate can prevent the generation of the sound of water as well as direct water is supplied deep into the condensed water, dilution is desired and the end of the pipe 10 A part of the auxiliary pipe (77a) made of a synthetic resin is not contained in the condensed water, so that the pipe 10 itself can be prevented in advance.

In addition, in the present invention, by forming a drain hole 82 selectively opened and closed by a bolt 83 in the bottom surface of the condensate storage chamber 72, the drain hole 82 is opened if necessary, the water in the container It can be discharged to the outside all the water in the condensate storage container (7) when the boiler is not operated for a long time in winter freezing condensate discharge due to freezing and the freezing of the storage container itself can be prevented in advance.

Meanwhile, in the present invention, if necessary, the partition wall 78 lower than the central partition 71 partitioned into the condensate storage chamber 72 and the water discharge chamber 73 is formed in the inner middle of the water discharge chamber 73. The water discharge chamber 73 itself and the evacuation chamber 79 having a volume smaller than the volume of the evacuation chamber 79 are divided into secondary drains 81 formed on the bottom surface of the evacuation chamber 79. Due to the fact that the diluted water is not discharged through the drain port 80, or if it is impossible to discharge all of the water through the drain port 80 due to excessive generation of condensate and supply of direct water, some water in the water discharge chamber 73 Since it overflows to the evacuation chamber 79 through the partition wall 78 and is automatically discharged through the auxiliary drain hole 81, it is possible to prevent the water from flowing down to the outside through the air hole formed in the lid body. can do.

In this case, when the upper surface of the central partition 71 is maintained in a straight state, the water itself is diluted in the condensate storage chamber 72 when the condensate itself overflows the central partition 71 in a neutral state. Since there is a possibility that the gas does not overflow to the water discharge chamber 73 and overflows to the evasion chamber 79 side, the partition is partitioned into the water discharge chamber 73 and the evacuation chamber 79 through the partition wall as described above. In this case, a stepped portion 71a is formed at the upper end surface of the partition wall communicating with the water discharge chamber 73 in the central partition 71 partitioned into the condensate storage chamber 72 and the water discharge chamber 73 to discharge the condensate water. It is better to overflow only to the seal 73 side.

In addition, the condensate inlet 75 and the overflow pipe insertion hole 76 and the water supply hole 77 formed in the lid 74 of the condensate storage container 7 of the bottom of the storage container 7 Work to install the condensate storage container (7) in the boiler body and to combine pipes and the like in each hole or drain hole only when the position of the drain 80, the drain hole 82 and the auxiliary drain 81 is always maintained in a fixed position This ease of course, it is possible to accurately supply the condensate and direct water into the condensate storage chamber 72, the four elastic locking pieces protruding to each slope by the coupling means of the lid 74 and the condensate storage container (7) ( When 74a) and the locking projection 7a are positioned on the center line in the horizontal and vertical directions, they cannot be accurately located and combined.

Therefore, in the present invention, the locking pieces 74a and the locking projections 7a are formed to protrude on the slopes of the lid 74 and the condensate storage container 7, respectively, so as to face each other with respect to the center line in the horizontal and vertical directions. By forming one or both pairs of the engaging pieces 74a and the engaging projections 7a at different positions, respectively, the cap body 74 and the storage container 7 are misaligned as described above. It can solve the possible problems.

As described above, according to the present invention, since the direct water is directly supplied into the condensate storage chamber, the acidic condensate is discharged undiluted with water, thereby preventing the boiler components from corrosion or water pollution. In addition, even if a back pressure or excessive condensate is generated, it can be automatically discharged to the outside through the auxiliary drain hole, and, if necessary, all the water in the container can be discharged to the outside, which remains in the condensate storage container when the boiler is not operated for a long time in winter. It is a very useful invention that can prevent the condensate discharge defect and the freezing of the storage container itself due to the freezing of the water, and also prevent the misalignment of the condensate storage container itself and the lid body in advance.

Claims (4)

A heat exchanger (2) which is heated by the burner (1) and heats the water supplied therein to a desired temperature; A burner (1) for discharging the combustion gas downward from the top or side of the heat exchanger; A heating pipe (3) for heating the room by using heat of water supplied from the heat exchanger (2); A cistern 4 having a predetermined volume; A circulation pump 5 for forcibly supplying water from the cistern 4 to the heat exchanger 2 side; A water supply valve 6 for continuously supplying supplemental water to the cistern 4; The two chambers 72 and 73 are partitioned into a condensate storage chamber 72 and a water discharge chamber 73 provided with a drain hole 80 on the bottom surface through a central partition wall 71 protruding upward from the bottom surface. In the condensate dilution device of the heat recovery boiler consisting of a condensate storage container (7) having a condensate inlet hole 75 and the overflow pipe (8) insertion hole 76 is formed on the upper surface of A water supply hole 77 for supplying water is further formed on the lid 74 located above the condensate storage chamber 72 of the condensate storage chamber 7, and condensate and condensate in the condensate storage chamber 72 are formed. The water is directly diluted to overflow through the upper end of the partition wall 71 to the water discharge chamber 73, The inside of the water discharge chamber 73 forms a partition 78 lower than the central partition 71 so as to be partitioned into the water discharge chamber 73 itself and the evacuation chamber 79, and the bottom surface of the evacuation chamber 79. An auxiliary drain hole 81 is formed at the upper end surface of the barrier rib communicating with the water discharge chamber 73 in the central partition wall 71 partitioned into the condensate storage chamber 72 and the water discharge chamber 73. Forming a condensate dilution and automatic discharge device of the heat recovery type boiler characterized in that the condensate is overflowed only to the water discharge chamber (73) side. The method according to claim 1, Condensate dilution and automatic discharge device of the heat recovery type boiler characterized in that the auxiliary pipe (77a) protruding to extend from the bottom of the water supply hole (77) to the inside of the condensate storage chamber (72). In claim 1, On the water supply hole 77 is operated in response to the control signal of the microcomputer to generate a control signal in response to the temperature of the heat exchanger (2) direct water supplied through the water supply valve (6) to the condensate storage chamber (72) Condensate dilution and automatic discharge device of the heat recovery type boiler characterized in that the output pipe 10 of the power receiver side (9) to be supplied is connected. The method according to claim 1, Opposed to each other with respect to the center line in the horizontal and longitudinal direction of the four elastic locking pieces (74a) and the engaging projection (7a) protruding on each slope by the coupling means of the lid 74 and the condensate storage container 7 itself It is characterized in that the locking piece 74a and the locking projection 7a on the side are formed in one or both pairs at different positions to prevent the misalignment of the lid 74 and the storage container 7. Condensate dilution and automatic drainage of heat recovery boilers.