KR101161256B1 - Large-capacity burner - Google Patents

Abstract

An object of the present invention is to provide a large-capacity burner capable of minimizing incomplete combustion of fuel to increase combustion efficiency and heating performance, and to burn a large amount of solid fuel with small particles.
A large capacity burner according to the present invention includes a tubular combustion chamber; An inner space forming body located in a central portion of the combustion chamber, the upper portion of which is narrower than the lower portion; And a late combustion inner tube connected inside the inner space forming body to communicate with each other.

Description

Large Burner {LARGE-CAPACITY BURNER}

The present invention relates to a large capacity burner, and more particularly to a large capacity burner for heating a boiler or the like.

Currently used boilers have various structures from industrial boilers to domestic boilers. In general, a domestic boiler is a heating means for heating the indoor space comfortably and warmly in a low temperature season such as winter season, early spring or late autumn, and is heated by heating water or heat medium in a closed container by combustion heat or other heat source. Heat medium such as water or steam is circulated to the heating line to heat the indoor space. Oil, gas, or solid fuel may be used as a fuel for hot water heating. Among them, particularly in the case of a small particle solid fuel, the space between the solid fuels is small and sufficient contact between the solid fuel and the air is not achieved. Incomplete combustion of a solid fuel and a reduction in combustion efficiency and heating performance are caused.

In addition, when small-particle solid fuel is burned in large quantities at one time, air does not reach the center of the solid fuel accumulated in a large volume. Therefore, since only the outside of the solid fuel pile is burned, it is not applicable to a large-capacity burner that burns solid fuel in large quantities.

In addition, when the burner is used for a long time, foreign matters such as dust and sand accumulate in the combustion chamber. At this time, it is not easy to remove foreign matters such as dust and sand, which results in poor burner performance and shortened lifespan. have.

In addition, when a component made of a metal such as a burner of a burner is exposed to excessive high temperatures, corrosion of the metal and degradation of durability occur.

In addition, in the case of solid fuel, unlike the case of using oil or gas, it takes a long time to reach the normal combustion temperature at the initial stage of fuel ignition.

An object of the present invention is to provide a large-capacity burner capable of burning a large amount of solid fuel with small particles.

Another object of the present invention is to provide a large-capacity burner capable of increasing combustion efficiency and heating performance by minimizing incomplete combustion by uniformly maximizing contact between continuously introduced solid fuel and air.

In addition, another object of the present invention is to provide a large-capacity burner capable of minimizing corrosion and increasing durability.

In addition, another object of the present invention is to provide a large-capacity burner capable of immediately removing dust and foreign matter during combustion in real time, thereby improving combustion efficiency and heating performance.

In addition, the present invention has another object to provide a large-capacity burner that can shorten the time required to the normal combustion temperature at the initial stage of ignition to increase combustion efficiency and heating performance.

A large capacity burner according to the present invention includes a tubular combustion chamber; An inner space forming body located in a central portion of the combustion chamber, the upper portion of which is narrower than the lower portion; And a late combustion inner tube connected inside the inner space forming body to communicate with each other.

Preferably, the outer space having a cone shape of the upper narrower than the lower portion, and spaced apart from the inner space forming a predetermined interval to surround the outside of the inner space forming body, the plurality of through-holes are formed; And a late combustion appearance spaced apart from the late combustion inner tube by a predetermined distance to surround the outer side of the late combustion inner tube, and connected inside the upper space forming body to communicate with each other, and having a plurality of through holes formed therein. The upper combustion external tube and the upper end of the late combustion inner tube may be connected to each other and sealed.

Preferably, at least one first blower pipe connected to the outer space forming body to supply external air between the outer space forming body and the inner space forming body; And at least one second blower tube connected to the late combustion appearance to supply external air between the late combustion appearance and the late combustion inner tube.

Preferably, at least one third blower pipe connected to the combustion chamber to supply external air to the combustion chamber; A body surrounding the outside of the combustion chamber at a predetermined distance from the combustion chamber; And at least one fourth blower pipe connected to the body to supply external air between the body and the combustion chamber, and a plurality of through holes may be formed in the combustion chamber.

Preferably, the lower combustion chamber may further include a lower combustion chamber connected to each other to communicate with each other, the upper portion having a wider cone shape than the lower portion, and having a plurality of through holes formed therein.

Preferably, the gas discharge inner pipe is connected to the inside of the combustion chamber to communicate with each other, the plurality of through-holes are formed; A gas discharge appearance surrounding the outside of the gas discharge inner tube spaced apart from the gas discharge inner tube at a predetermined interval; And at least one fifth blower pipe connected to the gas exhausting exterior to supply external air between the gas exhaust inner tube and the gas exhausting exterior.

Preferably, at least one sixth blower pipe connected to the lower combustion chamber to supply outside air into the lower combustion chamber; A pair of discharge rollers provided at a lower portion of the lower combustion chamber; And a temperature detector disposed below the lower combustion chamber and configured to measure a temperature inside the lower combustion chamber. When the temperature value measured from the temperature detector is equal to or less than a predetermined value, the discharge roller is driven to drive the lower combustion chamber. The dust inside can be discharged.

Preferably, the fuel supply pipe connected to the combustion chamber to supply fuel to the combustion chamber; A fuel detection sensor configured at one side of the fuel supply pipe to detect a transfer of the fuel; And heaters configured in the third and sixth blower tubes to ignite the fuel.

Preferably, the lower combustion chamber is configured to be discharged from the lower combustion chamber dust and the discharge portion for collecting the foreign matter; And at least one seventh blower pipe connected to the discharge unit so as to supply outside air into the discharge unit.

Preferably, at least one eighth blower pipe connected to the fuel supply pipe to supply external air into the fuel supply pipe; A blower for forcibly supplying the outside air to the first to eighth blower pipes; And a valve configured to control the flow of the outside air, which is configured in the first to eighth blow pipes.

The large-capacity burner according to the present invention can minimize the incomplete combustion by burning the exhaust gas at a high temperature and maximizing the contact between the fuel and the air, thereby maximizing the combustion efficiency and the heating performance, and thus it is not possible to apply previously. This has the effect of enabling the burner to burn large quantities of small solid fuel which was not possible. In addition, the combustion of the exhaust gas through the high temperature pyrolysis of the solid fuel can minimize the incomplete combustion, increase the combustion efficiency, and the heating performance, there is an effect that can minimize the emission of greenhouse gases. In addition, it is possible to remove dust and foreign matter in real time during solid fuel combustion, and to minimize the time required for the normal combustion temperature at the initial stage of ignition, thereby increasing the combustion efficiency and heating performance. In addition, since excessive temperature rise of the component exposed to high temperature can be prevented, the durability of the component can be improved.

1 is a perspective view of a large-capacity burner according to an embodiment of the present invention,
Figure 2a is a plan view of a large-capacity burner according to an embodiment of the present invention,
2b is a front view of a large-capacity burner according to an embodiment of the present invention;
Figure 2c is a left side view of the large-capacity burner according to an embodiment of the present invention,
2d is a right side view of a large capacity burner according to an embodiment of the present invention, and
3 is a side perspective view of a large capacity burner according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention. Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

1 is a perspective view of a large-capacity burner according to an embodiment of the present invention, Figure 2a is a plan view of a large-capacity burner according to an embodiment of the present invention, Figure 2b is a front view of a large-capacity burner according to an embodiment of the present invention, Figure 2c is a left side view of the large-capacity burner according to one embodiment of the present invention, FIG. 2d is a right side view of the large-capacity burner according to one embodiment of the present invention, and FIG. 3 is a side perspective view of the large-capacity burner according to one embodiment of the present invention; 4 is a view showing the flow of air supplied to the combustion chamber of the large-capacity burner according to an embodiment of the present invention.

The large-capacity burner according to an embodiment of the present invention includes an inner space forming body 120, a combustion chamber 100, and a blower 240.

The combustion chamber 100 has a cylindrical shape, and a cone-shaped inner space forming member 120 is formed at a central portion inside the combustion chamber 100, and is spaced apart from the inner space forming body 120 by a predetermined interval outside the inner space forming body 120. The cone-shaped outer space forming body 121 is located. The upper combustion inner tube 130 is connected to the upper end of the inner space forming body 120, and is connected to communicate with the inner space forming body 120. In addition, the late combustion inner tube 130 is spaced apart from the late combustion inner tube 130 by a predetermined interval outside the late combustion outer tube 131, the outer space forming body 121 and the outer space forming body 121 to communicate with the inside. ) Is connected to the top. In addition, the upper end of the late combustion exterior 131 and the late combustion inner tube 130 is connected to each other, a plurality of through-holes are formed in the connection portion.

The outer side of the combustion chamber 100 is spaced apart from the combustion chamber 100 by a predetermined interval to form a cylindrical combustion chamber exterior 110. The inner body 210 is spaced apart from the combustion chamber exterior 110 by a predetermined interval on the outside of the combustion chamber exterior 110, and the body 200 is spaced apart from the inner body 210 by a predetermined interval on the outside of the inner body 210. do. In addition, the gas discharge inner tube 140 is connected to the upper portion of the combustion chamber 100 so as to communicate with the combustion chamber 100, and the gas discharge inner tube 140 is spaced apart from the gas discharge inner tube 140 by a predetermined distance to the outside of the gas discharge inner tube 140. 141 is configured.

The lower combustion chamber 150 is connected to the lower portion of the combustion chamber 100. The lower combustion chamber 150 has a cone shape and solid fuel introduced into the combustion chamber 100 is stacked from the lower combustion chamber 150. In addition, dust in which the solid fuel is combusted may be discharged to the lower combustion chamber 150. A pair of discharge rollers 160 are formed at the lower end of the lower combustion chamber 150. When the discharge rollers 160 are stopped, the dust is blocked, and when the discharge rollers 160 are rotated, the dusts are discharged. The emission of can be controlled. Although not shown, a temperature measuring unit having a predetermined distance from the lower portion of the lower combustion chamber 150 may be positioned to measure a temperature of the lower portion of the lower combustion chamber 150. According to an embodiment of the present invention, the temperature measuring unit may include a lower combustion chamber ( 150) It may be a temperature sensor for measuring the temperature directly, or an optical sensor for measuring the temperature. In addition, the discharge portion 220 is connected to the lower portion of the body 200 may discharge the dust discharged through the discharge roller 160. In addition, the discharge roller 160 is not completely in contact with each other, there is a gap between the discharge roller 160, the air forcibly introduced through the blower pipe 250f connected to the discharge unit 220 inside the lower combustion chamber 150 To help burn solid fuel.

The fuel supply pipe 230 is for supplying the solid fuel into the combustion chamber 100. According to an embodiment, a screw (not shown) may be configured inside the fuel supply pipe 230 to supply the solid fuel. In addition, one side of the fuel supply pipe 230 is provided with a fuel detection sensor 410 can detect whether the solid fuel, and the input amount.

The blower 240 is for supplying fresh air to the combustion chamber 100, the lower combustion chamber 150, and the like, and supplies air to the plurality of blower tubes 250. The blower tube 250 includes the combustion chamber 100, the lower combustion chamber 150, the inner body 210, the late combustion exterior 131, the gas discharge exterior 141, the outer space forming body 121, and the fuel supply pipe 230. Is connected to each. In addition, the blower tube 250b connected to the combustion chamber 100 includes second and third heaters 301 and 302, and the blower tube 250e connected to the lower combustion chamber 150 includes the first heater 300. Is configured to ignite the solid fuel injected into the combustion chamber 100 and the lower combustion chamber 150. In addition, each blower pipe 250 is configured with a valve 420, by operating each valve 420 individually, it is possible to independently adjust the air supply amount through each blower pipe (250). Therefore, optimum combustion is possible according to the input amount of the solid fuel, the combustion situation, the combustion progression stage, and the like.

Meanwhile, a plurality of through holes are formed in the combustion chamber 100, the lower combustion chamber 150, the outer space forming body 121, the late combustion external appearance 131, and the gas discharge inner tube 140, according to one embodiment of the present invention. According to this, the through hole preferably has a diameter through which the solid fuel cannot pass. In addition, a plurality of through holes are formed in the combustion chamber exterior 110. According to one embodiment of the present invention, the through holes of the combustion chamber exterior 110 have a larger diameter than the through holes of the combustion chamber 100 for a smooth flow of air. It is preferable to have.

Operation of the large-capacity burner according to an embodiment of the present invention is as follows. Solid fuel, such as pellets, is injected into the combustion chamber 100 from the fuel supply pipe 230, and the air supplied from the blower 240 flows in together through the blower pipe 250h configured at one side of the fuel supply pipe 230. The solid fuel to be injected is stacked from the lower combustion chamber 150 to be accumulated in the combustion chamber 100. At this time, the solid fuel does not accumulate and a space is formed inside the internal space forming member 120 configured at the center of the combustion chamber 100. .

The injected solid fuel is ignited by the first to third heaters 300, 301, and 302. The solid fuel is heated by heating air introduced into the combustion chamber 100 and the lower combustion chamber 150 through the blower pipes 250b and 250e. Is ignited. Meanwhile, the solid fuel may be stacked only in the lower combustion chamber 150 for efficient ignition of the solid fuel, and the solid fuel may be further charged after the solid fuel in the lower combustion chamber 150 is ignited to stack the solid fuel in the combustion chamber. In this case, the first heater 300 is operated first to ignite the solid fuel in the lower combustion chamber 150, and then the second and third heaters 301 and 302 are operated to operate the solid fuel in the combustion chamber 100. Can ignite. After the ignition is finished, the operation of the first to third heaters 300, 301, and 302 is stopped.

On the other hand, air is supplied for smooth and complete combustion of the solid fuel, and the air conveyed through the blower pipe 250c connected to the outer space forming body 121 is solid through the through hole of the outer space forming body 121. Supplied to the fuel. The air transferred through the blower pipe 250d connected to the late combustion appearance 131 is supplied to the solid fuel through the through hole of the late combustion appearance 131. In addition, the air transported through the blower tube 250a connected to the inner body 210 is supplied to the solid fuel through the through hole of the combustion chamber exterior 110, the combustion chamber 100, and the lower combustion chamber 150. The air is supplied to the combustion chamber 100 and the lower combustion chamber 150 through the blower pipes 250b and 250e including the first to third heaters 300, 301, and 302. Each blower tube 250 may be changed in position and number configured for smooth air supply, and the first and third heaters 300, 301 and 302 may also be changed in consideration of ignition performance. have.

The hot gas generated while the solid fuel is pyrolyzed is discharged through the gas discharge inner tube 140, wherein the gas is mixed with incomplete combustion gas, and it is preferable to completely burn the incomplete combustion gas. Since the internal space former 120 is located at the center of the solid fuel, the interior of the internal cavity 120 is at a very high temperature and strong flames and complete combustion gases are generated. The high temperature complete combustion gas generated inside the inner space former 120 is discharged along the late combustion inner tube 130, and a strong flame inside the inner space former 120 is also ejected along the late combustion inner tube 130. .

At this time, the incomplete combustion gas passing through the gas discharge inner pipe 140 is supplied from the high-temperature flame ejected from the late combustion inner pipe 130, the blowing pipe (250g) connected to the gas discharge outer tube 141 of the gas discharge inner pipe 140 It is completely combusted by the air introduced through the through hole, and the air introduced through the through hole formed at the connection portion between the late combustion inner tube 130 and the late combustion appearance 131.

Dust of the burned solid fuel and foreign matter such as sand buried in the solid fuel are discharged to the lower portion of the lower combustion chamber 150. The dust, and foreign matter, of the solid fuel burned is lower in temperature than the solid fuel in combustion. Therefore, when the temperature measured by the temperature measuring unit is below a predetermined value, it can be seen that dust is accumulated inside the lower combustion chamber 150, in which case the discharge roller 160 is operated. According to the operation of the discharge roller 160, the dust of the lower combustion chamber 150 is discharged to the discharge unit 220, the dust and foreign matter in the dust is more densely pulverized by the roller. If the temperature measured by the temperature measuring unit 400 during the discharge of the dust is a predetermined value or more can be seen as a solid fuel in combustion, the operation of the discharge roller 160 is stopped.

On the other hand, the central portion of the solid fuel to be burned is higher than the outside, and problems such as corrosion and deterioration may occur when a metal such as the outer space forming body 121 located at the central portion of the solid fuel is exposed to excessive high temperatures. Can be. Therefore, the air flows between the spaced outer space forming body 121 and the space space 120, and between the late combustion appearance 131 and the late combustion inner tube 130 to prevent excessive temperature rise. Can be.

Similarly, the metal is caused by the air flowing between the combustion chamber 100 and the combustion chamber exterior 110, between the lower combustion chamber 150 and the inner body 210, and between the gas exhaust inner tube 140 and the gas exhaust exterior 141. It is possible to prevent excessive high temperature exposure of the components consisting of corrosion and degradation of durability.

Meanwhile, in the combustion chamber 100 in which solid fuel is mainly combusted, the supply and flow of air is very important. Referring to FIG. 4, the air supplied to the inner body 210 passes through a through hole of the combustion chamber exterior 110. The fuel cell is supplied as a solid fuel through the through hole of the combustion chamber 100. This allows the air to sequentially pass through the through-hole of the relatively large diameter combustion chamber exterior 110 and the through-hole of the relatively small combustion chamber 100, thereby slowing the flow rate of the air and uniformly contacting the solid fuel with the air. Is to maximize. By lowering the air flow rate, it is possible to prevent scattering of the solid fuel which may occur when the air flow rate is high, and by increasing the contact between the solid fuel and the air uniformly, it is possible to increase combustion efficiency and reduce incomplete combustion. In addition, since the air reaches the outer surface of the combustion chamber evenly, it is possible to more reliably prevent excessive temperature rise of the combustion chamber 100. In FIG. 4, the configuration of the periphery of the air combustion chamber 100 is briefly exaggerated to help understand the air flow supplied through the blower pipe 250a connected to the inner body 210.

Small particle solid fuels do not have a large space between the particles. There is no problem when burning a small amount of solid fuel, but when burning a large amount of solid fuel at a time, air does not reach the center of the solid fuel accumulated in a large volume. Therefore, since only the outer side of the solid fuel stack is burned and the center is difficult to burn, it is very difficult to implement a large-capacity burner that burns a large amount of solid fuel with small particles at present. In addition, when a large amount of fuel is burned, a component made of a metal such as a combustion chamber is exposed to excessive high temperature, causing corrosion and deterioration of the component.

The large-capacity burner according to the present invention allows maximum uniform contact with air as well as the outside of the continuous solid fuel stack, thereby minimizing incomplete combustion and increasing combustion efficiency and heating performance, thereby reducing the particle size. It is possible to implement a large-capacity burner capable of burning a large amount of solid fuel.

In addition, by burning the exhaust gas through the high temperature pyrolysis of the solid fuel, it is possible to minimize incomplete combustion, increase combustion efficiency, and heating performance, and minimize emission of greenhouse gases.

In addition, when a large amount of fuel is burned, the temperature rises excessively. As a result, the combustion chamber made of metal and the like are exposed to excessive high temperatures, thereby causing corrosion and deterioration of durability. However, in the large-capacity burner according to the present invention, the air supplied to the solid fuel can cool the component by sufficiently uniformly contacting the component made of metal such as a combustion chamber. Therefore, corrosion and durability degradation can be prevented by preventing the component from being exposed to excessive high temperatures.

In addition, there arises a problem that combustion efficiency is lowered, such as dust generated after the solid fuel is burned, and air supply to the solid fuel is not smooth when foreign matter is accumulated in the combustion chamber. However, the large-capacity burner according to the present invention can increase combustion efficiency because dust and foreign matter removal are removed in real time and automatically during solid fuel combustion.

In addition, since the contact area between the solid fuel and the air is very large and it is possible to make uniform contact, it is possible to minimize the time required to the normal combustion temperature at the beginning of ignition. Therefore, combustion efficiency and heating performance can be improved.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto and is intended by those skilled in the art to which the present invention pertains. Various modifications and variations are possible within the scope of equivalents of the claims to be described.

100: combustion chamber 110: combustion chamber appearance
120: internal space formation 121: external space formation
130: late combustion inner tube 131: late combustion appearance
140: gas discharge inner tube 141: gas discharge appearance
150: lower combustion chamber 160: discharge roller
200: body 210: inner body
220: discharge portion 230: fuel supply pipe
240: Blower 250a ~ 250h: Blower tube
300: first heater 301: second heater
302: third heater 410: fuel detection sensor
420: valve

Claims (11)

Tubular combustion chamber;
An inner space forming body located in a central portion of the combustion chamber, the upper portion of which is narrower than the lower portion;
A post combustion inner tube connected inside the inner space forming body to communicate with each other;
An outer space forming body having an upper cone shape narrower than the lower portion, being spaced apart from the inner space forming body by a predetermined interval, surrounding the outside of the inner space forming body, and having a plurality of through holes formed therein; And
The late combustion exterior which is spaced apart from the late combustion inner tube by a predetermined interval to surround the outer side of the late combustion inner tube, and is connected to the inside of the outer space forming body so as to communicate with each other, and a plurality of through holes are formed.
Including,
A large-capacity burner in which the upper combustion exterior and the upper end of the late combustion inner tube are connected to each other to form a plurality of through holes.
delete The method of claim 1,
At least one first blower pipe connected to the outer space forming body to supply external air between the outer space forming body and the inner space forming body; And
At least one second blower tube connected to the late combustion appearance to supply outside air between the late combustion appearance and the late combustion inner tube.
Large burner containing more.
The method of claim 3,
At least one third blower pipe connected to the combustion chamber so as to supply external air to the combustion chamber;
A body surrounding the outside of the combustion chamber at a predetermined distance from the combustion chamber; And
At least one fourth blower pipe connected to the body to supply outside air between the body and the combustion chamber;
Further comprising a large-capacity burner in which a plurality of through holes are formed in the combustion chamber.
The method of claim 4, wherein
The lower combustion chamber is connected to the lower portion of the combustion chamber so as to communicate with each other, the upper portion has a wider cone shape than the lower portion, and a plurality of through holes are formed.
Large burner containing more.
The method of claim 5,
A gas discharge inner tube connected to an upper portion of the combustion chamber so as to communicate with each other and having a plurality of through holes formed therein;
A gas discharge appearance surrounding the outside of the gas discharge inner tube spaced apart from the gas discharge inner tube at a predetermined interval; And
At least one fifth blower pipe connected to the gas exhaust appearance so as to supply outside air between the gas exhaust inner tube and the gas exhaust appearance;
Large burner containing more.
The method of claim 6,
At least one sixth blower pipe connected to the lower combustion chamber so as to supply outside air into the lower combustion chamber;
A pair of discharge rollers provided at a lower portion of the lower combustion chamber; And
A temperature detector provided under the lower combustion chamber to measure a temperature inside the lower combustion chamber;
Further comprising:
And a discharge roller is driven to discharge dust in the lower combustion chamber when the temperature value measured from the temperature detector is equal to or less than a predetermined value.
The method of claim 7, wherein
A fuel supply pipe connected to the combustion chamber to supply fuel to the combustion chamber;
A fuel detection sensor configured at one side of the fuel supply pipe to detect a transfer of the fuel; And
A heater configured in the third and sixth blower pipes to ignite the fuel
Large capacity burner containing more.
The method of claim 8,
A discharge unit configured to be disposed under the lower combustion chamber to collect dust and foreign substances discharged from the lower combustion chamber; And
At least one seventh blower pipe connected to the discharge unit to supply outside air to the discharge unit;
Large burner containing more.
10. The method of claim 9,
At least one eighth blower pipe connected to the fuel supply pipe so as to supply outside air into the fuel supply pipe;
A blower for forcibly supplying the outside air to the first to eighth blower pipes; And
A valve configured in the first to eighth blow pipes to control the flow of the outside air;
Large capacity burner containing more.
The method according to any one of claims 1 and 3 to 10,
A large capacity burner in which the upper combustion exterior and the upper end of the late combustion inner tube are connected to each other and sealed.

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