KR101248589B1 - Boiler with emproved thermal efficiency - Google Patents

Abstract

The present invention relates to a boiler having an improved thermal efficiency, and more particularly, to the heating water is discharged by heating through heat exchange through the flame generated in the combustion process of the combustion products, in particular between the heating water and the flame through an improved flue gas structure The present invention relates to a boiler configured to have an improved thermal efficiency by increasing the heat exchange area and heat exchange time of the same.

Description

Boiler with emproved thermal efficiency

The present invention relates to a boiler having improved thermal efficiency, and more particularly, is configured to heat and discharge the heating water through heat exchange using the flame generated in the combustion process of the combustion product, in particular heating water and flame through an improved flue gas structure The present invention relates to a boiler configured to have an improved thermal efficiency by increasing a heat exchange area and a heat exchange time therebetween.

In the past, various types of waste sludge, including food waste, sewage waste sludge, and livestock manure, were treated with marine dumping (51.4%) and landfill sites (40.2%), but the limits of landfills, heavy metal contamination and leachate generation, etc. As a result of environmental issues, the dumping of land dumping and land was completely banned in July 2003, and the entire landfill of waste was banned in January 2005. The situation is emerging.

Of course, food waste can be composted or fed into the waste sludge, but since the food waste contains a large amount of salt, composting without completely removing the salt can cause a disturbance in crop growth. In the case of food waste in the state of abandoned feed can cause the problem that the livestock ingesting the livestock, it is not a fundamental solution.

In addition, the present inventor has proposed a technical idea of drying the waste sludge to lower the water content through the Republic of Korea Patent Registration Publication No. 0449517 to make it a solid fuel, the waste of the sludge was difficult to dispose due to the proposal of the technical idea Can be used as a new resource.

On the other hand, the boiler for heating the heating water may be classified into a boiler for burning oil, a regenerative boiler using a late-night power, and a boiler for burning solid combustion products according to the energy source.

Here, the boiler for burning the solid combustion products, mainly heating the heating water through the fire that is generated by burning coal or firewood, less trouble occurs compared to the boiler using oil or late-night electricity, heating at a relatively low cost This has a possible advantage.

However, it is pointed out that the boiler is inconvenient or hassle that requires a relatively low thermal efficiency and a continuous solid combustion of the boiler compared to the boiler using oil or midnight power.

An object of the present invention devised to solve the above problems, is configured to heat and discharge the heating water through heat exchange using the flame generated during the combustion of the combustion product, in particular between the heating water and the flame through an improved flue gas structure It is to provide a boiler configured to have an improved thermal efficiency by increasing the heat exchange area and heat exchange time of the.

The above object is achieved by the following constitutions provided in the present invention.

Boiler having improved thermal efficiency according to the present invention,
Inside the casing, a heat exchange part for storing and circulating the heating water and a combustion part for burning the combustion product to emit flames are arranged up and down, and the heat is stored and circulated in the heat exchange part by the flame generated in the combustion part. In a boiler configured to heat water,
In the heat exchange part, an upper flue gas part consisting of a plurality of upper flue pipes, which are upward conveying paths of flames, and a lower flue gas part consisting of a plurality of lower flue gas pipes, which are downward conveying paths of flames, are alternately disposed, and these elevated flames are discharged. Between the upper part of the upper flue gas unit and the upper portion of the lower flue gas adjacent to each other, between the lower portion of the lower flue gas discharged discharged flame and the lower portion of the upper flue gas adjacent to each other is formed a dust collection space, respectively,
The flame is distributed along the plurality of upper flue pipes and conveyed upwards, and the flames conveyed upwards are configured to be discharged through an exhaust port after repeating the up and down circulation processes that are distributed and conveyed downward along the plurality of lower flue gases,
The case has a dual structure in which an auxiliary storage tank is formed between the inner wall member and the outer wall member, and the completed heating water is configured to flow into the heat exchange unit through the auxiliary storage tank, so that the auxiliary storage tank is heated by the heat emitted from the combustion unit. Heating water introduced into the preheated heat exchanger is configured to flow in,
The combustion unit is formed on the upper portion of the bottom surface formed with the discharge port, the grate is a combustion space of the combustion spaced apart, the grate is composed of a tube having a circulating function of heating water, each of the tubes forming the grate It is configured to communicate with the auxiliary reservoir, the heating water circulating the grate by the heat generated in the combustion unit is heated, and the heated heating water is configured to flow into the heat exchange unit, thereby heating the heating water through the flame discharged to the lower portion In addition, by the cooling action of the heating water, the combustion products suppress the thermal deformation of the grate due to combustion,

The grate is provided with a rotating structure in which the stirring member, which is coupled to the shaft and the eccentric link structure of the electric motor, is configured to achieve a stable combustion state of the solid fuel that is injected into and combusted by the stirring action through the stirring member. do.

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In addition, a dust collecting window communicating with the outside is formed in the dust collecting space which communicates the upper and lower exhaust parts adjacent to each other, and is configured to remove the sludge remaining in the dust collecting space by the transfer of the flame through the cleaning window.

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As described above, in the present invention, in the implementation of a boiler for heating the heating water stored and circulated in the heat exchange unit through the flame generated in the combustion unit, the improved flue gas in which the flame circulates up and down sequentially in the heat exchange unit By forming a structure, the flame generated in the combustion section is not immediately discharged through the exhaust port, but is discharged after circulating the heat exchanger for a long time.

When the heat exchange area and the heat exchange time between the heating water and the flame are increased by the improved flue gas structure, the thermal efficiency can be improved, and the phenomenon that the exhaust port is overheated at all times can be prevented.

In the present invention, in forming such a flue structure, a dust collecting space is formed between the flue parts forming the flue structure, a sweep window is provided in the dust collecting space, and sludge such as soot or dust contained in the flame is included. Since it can be removed more easily, the problem that the flue gas structure is blocked by the sludge can be prevented in advance.

In addition, in the present invention, the grate constituting the combustion unit is composed of a tubular body, and the heating water supplied to the heat exchange unit is circulated through the tubular body, thereby preventing heat loss emitted to the grate while preventing thermal deformation of the grate. Can be.

Figure 1 shows the external configuration of the boiler having improved thermal efficiency proposed as a preferred embodiment in the present invention,
Figure 2 shows a detailed configuration of the combustion section in the boiler having an improved thermal efficiency proposed in the preferred embodiment of the present invention,
3 shows in detail a flue gas structure formed in a heat exchanger in a boiler having improved thermal efficiency proposed as a preferred embodiment of the present invention.
Figure 4 is a working state diagram showing the heating state of the heating water through the boiler having an improved thermal efficiency proposed as a preferred embodiment in the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a boiler having improved thermal efficiency proposed as a preferred embodiment in the present invention.

Figure 1 shows the external configuration of the boiler having an improved thermal efficiency proposed in the preferred embodiment of the present invention, Figure 2 is a detailed configuration of the combustion section in the boiler having an improved thermal efficiency proposed in the preferred embodiment of the present invention 3 shows a flue gas structure formed in the heat exchanger in detail in a boiler having improved thermal efficiency proposed as a preferred embodiment in the present invention, and FIG. 4 is an improved embodiment proposed as a preferred embodiment in the present invention. This is a state diagram showing the heating state of the heating water through the boiler having thermal efficiency.

Boiler 1 having improved thermal efficiency proposed as a preferred embodiment in the present invention is a storage and circulation path of the combustion unit 20 and the heating water in the case 10, the combustion of the solid fuel to emit flame The heat exchanger 30 to be formed is arranged to be spaced apart vertically, the flame (H) generated in the combustion unit 20 is configured to heat the heating water (W) stored and circulated in the heat exchanger (30). *** Unexplained symbol in the drawing, 10a is inlet of heating water, 10b is heating water outlet ***

Referring to the drawings, the case 10 accommodating the combustion unit 20 and the heat exchange unit 30 is supported by the pedestal 13 to form a state spaced apart from the ground, and the combustion unit 20 has an outlet ( The grate 21 for securing the combustion space of the solid fuel (B) is arranged on the upper portion of the bottom surface 14 is formed with a spaced apart.

In the present embodiment, the heating grate circulating the grate 21 is heated by the heat generated by the combustion unit 20 by configuring the grate 21 as a tubular body having a circulation function of heating water. By configuring the heated water W to be introduced into the heat exchanger 30, the heating water is heated through the flame discharged to the lower part, and the grate according to the combustion of the combustion product B by the cooling action of the heating water. The thermal deformation of 21 is suppressed, and each of the tubes forming the grate 21 communicates with the auxiliary storage tank 10 'which will be described later.

Here, various combustion products (B) such as wood, coal, lignite, etc. may be input to the grate 21 to generate a flame through combustion.

In this embodiment, however, the combustion product B having solidified the waste sludge is introduced into and combusted in the combustion unit 20 to reduce the cost of stable treatment of the waste sludge and heating of the heating water. In this case, the combustion product B may be periodically supplied to the combustion unit 20 through a supply screw 18 installed in the inlet 17 of the case 10.

In the present embodiment, the bottom surface 14 is configured to have a wide upper portion and a narrow lower portion. A discharge screw 16 is installed in the discharge port 15 formed in the lower portion of the bottom surface 14, and the combustion product B The ash which has been generated by combustion of) and which has dropped into the lower portion is forced to be discharged to the outside through the discharge screw 16.

In addition, a blower 25 for forcibly supplying air required for combustion of the combustion product B is installed on the bottom surface 14, and the air is supplied smoothly through the blower 25 and combustion of the combustion product B is performed. It ensures that stable emissions of the resulting flames are achieved.

In addition, in the present embodiment, the stirring member 22 is connected to the shaft 23a and the eccentric link structure of the electric motor 23 to the grate 21 and repeatedly rotates isotropically by the rotation of the electric motor 23. The shaft is installed.

At this time, the eccentric members 22a-a and 23a-a are formed on the shaft 23a of the electric motor 23 and the rotating shaft 22a of the stirring member 22, respectively, and the eccentric members 22a-a and 23a. -a) as the eccentric structure is connected to each other through the connecting rod 24, the connecting rod 24 by the drive of the electric motor 22 is retracted and left and right pivot through which is installed on the upper part of the grate 21 The stirring member 22 is rotated repeatedly at right and left sides.

The electric motor 23 is fixed to a pedestal or the like formed on the outside of the combustion unit 20, and the connecting rod 24 passes through the long hole 14a formed at the bottom of the combustion unit to burn the electric motor 23 and the combustion. Since the stirring member 22 accommodated in the unit 20 is connected in an eccentric structure, the flame and air generated or supplied from the combustion unit 20 through the long hole 14a, which is a through path of the connection rod 24, are burned. It may leak out of the (20).

In order to prevent this, in the present embodiment, a cover 24a for closing the long hole is provided on the connecting rod 24 while transporting along the outside of the long hole 14a, whereby the connecting rod 24 is moved from side to side. Since the long hole 14a is always closed by the cover 24a even if it is turned, the phenomenon of flame and air leaking from the combustion unit 20 through the long hole 14a can be prevented.

Thus, the solid fuel B injected into the grate 21 through the inlet 17 formed in the case 10 and combusted is subjected to periodic stirring by the stirring member 22 and blower 25. Combustion is made by forming a stable combustion state by the air introduced through, and heating of the heating water stored and circulated in the heat exchange unit 30 disposed above by a large amount of flame generated by the combustion of the combustion product B It is planned.

In addition, the stirring member 22 is configured in a form in which the arms 22b are radially disposed about the rotating shaft 22a, so that the overall shape of the stirring member 22 is opened through the individual thermal expansion of the arms 22b. It prevents deformation.

In addition, in the present embodiment, the case 10 has a dual structure in which an auxiliary storage tank 10 'is formed between the inner wall member 11 and the outer wall member 12, and is recovered through a circulation pipe (not shown). The heating water W passes through the auxiliary storage tank 10 ′ and flows into the heat exchange unit 30.

Accordingly, the heating water W introduced into the auxiliary storage tank 10 ′ by the flame radiated from the combustion unit 20 is introduced into the heat exchange unit 30 in a preheated state, and thus has an improved thermal efficiency, and also a case. Since a large amount of heat is not emitted through the surface of (10), the surroundings of the boiler may become hot, which may damage the work environment or cause a safety accident such as a burn due to physical contact.

On the other hand, in the present embodiment is disposed above the combustion unit 20, to form an improved flue structure in the heat exchange unit 30 is heated by the flame generated by the combustion of the combustion product (B), By configuring the exhaust gas structure to increase the heat exchange area and the heat exchange time between the heating water and the flame, it has an improved thermal efficiency and prevents a phenomenon that the exhaust port through which the flame is finally discharged is excessively heated to shorten its lifespan.

According to the present embodiment, the flue gas structure, the upper flue gas 31 and the lower flue 32 in communication with the heat exchanger 20 alternately arranged, the flame transferred upward through the upper flue (31). Is introduced into the lower lower exhaust part 32 and transported downward, and the flame exhausted by being transported downward from the lower exhaust part 32 repeats the up and down circulation process that is introduced into the adjacent upper exhaust part 31 and transported upward. Next, the final discharge through the exhaust port (19).

As shown in the drawing, the upper exhaust pipe 31 is composed of a plurality of upper exhaust pipes 31a, and the lower exhaust pipe 32 is composed of a plurality of lower exhaust pipes 32a.

In addition, between the upper part of the upper flue part 31 from which these raised flames are discharged and the upper part of the lower flue part 32 adjacent thereto, the lower flue part 32 from which the lowered flame is discharged and the upper flue part 31 adjacent thereto ), A dust collecting space 33 for communicating with each other is formed.

Therefore, the flame (H) is distributed up and down along the plurality of upper exhaust pipe (31a) and conveyed upwardly, the flame (H) is up and down circulation process is distributed down along the plurality of lower exhaust pipe (32a) After repeated, it is discharged through the exhaust port 19, when the flame is dispersed and conveyed upward or downward has the advantage that the heat exchanger 20 and the heat exchange area is widened.

Thus, in the boiler 1 according to the present embodiment, the flame generated in the combustion unit 20 is not immediately discharged through the exhaust port 19, but the upper flue gas 31 and the lower flue gas 32 and the dust collecting space. Discharges through (33) and is discharged while repeatedly circulating up and down, and the heat exchange area and heat exchange time between the heating water and the flame are increased by the vertical circulation of the flame, so that stable heating of the heating water through the flame is achieved. Finally, the exhaust port through which the flame is discharged is excessively heated to prevent the shortening of the lifespan.

By the way, the flame (H) is discharged by circulating up and down through the flue structure according to the present embodiment is formed by burning the combustion product (B) solidifying the waste sludge, so that a large amount of sludge (S) is included, A phenomenon in which the upper flue gas 31 and the lower flue 32 and the dust collecting space 33 forming the flue structure may be blocked by sludge, and most of the sludge S remains in the dust collecting space.

In consideration of this, in the present embodiment, the dust collecting space 33 constituting the flue structure is formed in the dust collecting door 34 is formed, the worker is remaining in the dust collecting space 33 through the cleaning window (34) By removing the sludge S, the phenomenon in which the flue gas structure is blocked by the sludge can be easily solved.

1. Boiler
10. Case 10 '. Secondary reservoir
11. Inner wall member 12. Outer wall member
13. Base 14. Base
14a. Long hole
15. Outlet 16. Outlet screw
17. Inlet 18. Feed Screw
19. Exhaust vent
20. Combustion 21. Grate
22. Stirring member 22a. Rotating shaft
22a-a. Eccentric member 22b. cancer
23. Electric motor 23a. shaft
23a-a. Eccentric Member 24. Connecting Rod
24a. Cover 25. Blur
30. Heat exchanger 31. Upper flue gas
32. Lower exhaust part 33. Dust collecting space
34. Window Cleaning

Claims (3)

Inside the casing, a heat exchange part for storing and circulating the heating water and a combustion part for burning the combustion product to emit flames are arranged up and down, and the heat is stored and circulated in the heat exchange part by the flame generated in the combustion part. In a boiler configured to heat water,
In the heat exchange part, an upper flue gas part consisting of a plurality of upper flue pipes, which are upward conveying paths of flames, and a lower flue gas part consisting of a plurality of lower flue gas pipes, which are downward conveying paths of flames, are alternately disposed, and these elevated flames are discharged. Between the upper part of the upper flue gas unit and the upper portion of the lower flue gas adjacent to each other, between the lower portion of the lower flue gas discharged discharged flame and the lower portion of the upper flue gas adjacent to each other is formed a dust collection space, respectively,
The flame is distributed along the plurality of upper flue pipes and conveyed upwards, and the flames conveyed upwards are configured to be discharged through an exhaust port after repeating the up and down circulation processes that are distributed and conveyed downward along the plurality of lower flue gases,
The case has a dual structure in which an auxiliary storage tank is formed between the inner wall member and the outer wall member, and the completed heating water is configured to flow into the heat exchange unit through the auxiliary storage tank, so that the auxiliary storage tank is heated by the heat emitted from the combustion unit. Heating water introduced into the preheated heat exchanger is configured to flow in,
The combustion unit is formed on the upper portion of the bottom surface formed with the discharge port, the grate is a combustion space of the combustion spaced apart, the grate is composed of a tube having a circulating function of heating water, each of the tubes forming the grate It is configured to communicate with the auxiliary reservoir, the heating water circulating the grate by the heat generated in the combustion unit is heated, and the heated heating water is configured to flow into the heat exchange unit, thereby heating the heating water through the flame discharged to the lower portion In addition, by the cooling action of the heating water, the combustion products suppress the thermal deformation of the grate due to combustion,
The grate is provided with a rotating structure in which the stirring member, which is coupled to the shaft and the eccentric link structure of the electric motor, is configured to achieve a stable combustion state of the solid fuel that is injected into and combusted by the stirring action through the stirring member. Boiler with improved thermal efficiency.
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