WO2016028030A1

WO2016028030A1 - Burner fuel transporting unit

Info

Publication number: WO2016028030A1
Application number: PCT/KR2015/008480
Authority: WO
Inventors: 권기문
Original assignee: 주식회사 건하; 권기문
Priority date: 2014-08-22
Filing date: 2015-08-13
Publication date: 2016-02-25
Also published as: KR101557095B1

Abstract

The purpose of the present invention is to provide a burner fuel transporting unit that sufficiently mixes and combusts fuel being transported, thereby minimizing uncomplete combustion and increasing combustion efficiency and heating performance. In a burner having therein a combustion chamber, a fuel supplying unit for supplying solid fuel to the combustion chamber, and an ash exhausting unit for exhausting ash from the combustion chamber, the burner fuel transporting unit according to the present invention comprises: a rotational shaft disposed toward the ash exhausting unit from the fuel supplying unit; and a plurality of mix rings having a ring shape, to which the rotational shaft can be inserted, the mix rings being fixedly connected to the rotational shaft in order to surround the rotational shaft, wherein the mix rings may be disposed to be tilted with respect to the rotational shaft.

Description

Burner Fuel Transfer

The present invention relates to a burner fuel feeder, and more particularly to a burner fuel feeder for smooth transfer of fuel during combustion of the burner.

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.

A burner is used as an apparatus for heating hot water, and as the fuel thereof, oil, gas, or solid fuel may be used. Among these, particularly in the case of solid fuels with small particles, a screw may be installed in the lower part of the combustion chamber for smooth discharge of the fuel. That is, fuel is injected into the combustion chamber, and the injected fuel is burned while being transported along the screw by the rotation of the screw, and the ash generated after the combustion is completed is transported along the screw and discharged to the outside of the combustion chamber.

However, according to the conventional burner, the space between the solid fuel is small and insufficient contact between the solid fuel and the air causes incomplete combustion of the solid fuel and deterioration of combustion efficiency and heating performance.

This problem also occurs in the solid fuel that is burned while being transported along the screw. First, the solid fuel that is transported along the screw is not mixed well and there is a problem that incomplete combustion occurs because the air supply is insufficient.

Second, since the solid fuel is transported at a constant speed along the screw, fuel that has not been sufficiently burned is also discharged to the outside of the combustion chamber and is wasted.

Third, when the fuel is agglomerated and stuck to the screw during the transfer of the fuel, there is a problem that the transfer is not desired and accumulated.

In other words, incomplete combustion occurs because air does not evenly reach the solid fuel during combustion, and fuel that is not sufficiently burned is discarded and wasted, so the combustion efficiency is poor compared to the amount of fuel injected, and when the fuel is accumulated, Normal combustion is difficult and cleaning is difficult.

It is an object of the present invention to provide a burner fuel transfer unit capable of increasing combustion efficiency and heating performance by minimizing incomplete combustion.

It is another object of the present invention to provide a burner fuel transfer which can prevent the accumulation of solid fuel during combustion.

The burner fuel transfer unit according to the present invention has a combustion chamber formed therein, and has a fuel supply unit for supplying solid fuel to the combustion chamber and a ash discharge unit for discharging ash from the combustion chamber, wherein the ash is supplied from the fuel supply unit. A rotating shaft disposed toward the discharge portion; And a ring shape into which the rotary shaft can be inserted, and a plurality of ring-shaped mixing rings fixedly coupled to the rotary shaft to surround the rotary shaft, wherein the mixing ring may be disposed to be inclined with respect to the rotary shaft.

Preferably, the mixing ring is installed to be inclined with respect to the longitudinal central axis of the rotary shaft, it may be sequentially arranged in a spiral form along the longitudinal direction of the rotary shaft.

Preferably, the mixing ring may be sequentially arranged in a spiral shape by 90 ° in the circumferential direction from the longitudinal center axis of the rotation axis.

Preferably, the rotating shaft may be formed in the inner space so that the cooling water flows.

Preferably, the mixing ring is formed in the inner space so that the coolant flows, the inlet and outlet are formed through the rotating shaft, the mixing ring may be connected to the inlet and the outlet so that the rotating shaft and the inside communicate with each other. have.

Preferably, the partition further includes a partition installed in the rotation shaft to partition the inside of the rotation shaft, the partition wall may be disposed between the inlet and the outlet so that the cooling water flows into the inlet and discharged to the outlet. have.

Preferably, the mixing ring is cut at one side so that both ends are eccentric with each other, the inlets are formed in pairs and are connected to both ends of the mixing ring, respectively, and the inlets are about the central axis in the longitudinal direction of the rotating shaft. It may be located on the same outer periphery in the vertical direction.

Preferably, a plurality of protrusions may protrude to a predetermined height along the outer circumference of the mixing ring.

The burner fuel transfer unit according to the present invention can maximize the contact between the fuel and the air to minimize the incomplete combustion, thereby maximizing the combustion efficiency and minimizing the fuel waste and the emission of the greenhouse gas. In addition, since it is possible to prevent the accumulation of solid fuel during transportation, there is an effect that can prevent combustion failure and smooth operation of the burner.

1a and 1b is a view showing the arrangement of the burner fuel transfer unit according to an embodiment of the present invention,

Figure 2 is a front view of the burner fuel transfer unit according to an embodiment of the present invention,

Figure 3a is a front view of the mixing ring of the burner fuel transfer unit according to an embodiment of the present invention,

Figure 3b is a side view of the mixing ring of the burner fuel transfer unit according to an embodiment of the present invention,

4a to 4d is a view showing the direction of the mixing ring according to the rotation of the burner fuel transfer unit according to an embodiment of the present invention,

5 is a view showing a combination of the rotating shaft and the mixing ring of the burner fuel transfer unit according to an embodiment of the present invention,

6 is a view showing the coolant flow in the burner fuel transfer unit according to an embodiment of the present invention,

7 is a view showing a combination of the rotary shaft and the mixing ring of the burner fuel transfer unit according to another embodiment of the present invention and

8 is a view showing a mixing ring of the burner fuel transfer unit according to another 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. As the invention allows for various changes and numerous embodiments, the examples described below and shown in the drawings are not intended to limit the invention to the particular embodiments, and the spirit and techniques of the invention. It is to be understood that all changes, equivalents, and substitutes falling within the scope are included. In addition, it should be understood that there may be various equivalents and modifications that can substitute for them at the time of the present application.

1A and 1B are views illustrating an arrangement of a burner fuel transfer unit according to an embodiment of the present invention, FIG. 2 is a front view of a burner fuel transfer unit according to an embodiment of the present invention, and FIG. 3A is an embodiment of the present invention. 3B is a front view of the mixing ring of the burner fuel transfer unit and FIG. 3B is a side view of the mixing ring of the burner fuel transfer unit according to the embodiment of the present invention.

The burner fuel transfer unit according to an embodiment of the present invention is disposed in the combustion chamber 10 inside the burner, and the fuel supply pipe 20 for supplying the solid fuel is disposed at one side of the burner fuel transfer unit. Thus, solid fuel can be supplied from one side of the burner fuel transfer. In addition, the ash discharge pipe 30 for discharging the burned solid fuel is disposed at the other side of the burner fuel transfer unit.

The burner fuel transfer unit according to the embodiment of the present invention includes a mixing ring 100 and a rotating shaft 200.

The mixing ring 100 has a shape in which a bar having an inner space is bent into a ring shape, and both ends thereof are formed to be shifted without facing each other. That is, the mixing ring 100 has a ring shape in which one side is eccentrically cut.

The mixing ring 100 is disposed to surround the outside of the rotation shaft 200, and neighboring mixing rings 100 are disposed to be spaced apart from each other by a predetermined interval.

Referring to FIG. 2, each of the plurality of mixing rings 100 is disposed to be inclined at a predetermined angle with respect to the end of the rotation shaft 200. In addition, the mixing ring 100 is disposed to sequentially face each other along the longitudinal direction of the rotation axis 200. According to one embodiment of the invention, the mixing ring 100 is fixed to the rotation shaft 200 sequentially in the circumferential direction by 90 ° from the longitudinal central axis of the rotation shaft 200, for example, the first mixing ring The second mixing ring 100 is rotated by 90 ° in one direction with respect to (100), and the third mixing ring 100 is rotated by 90 ° in one direction with respect to the second mixing ring 100 and fixed. The fourth mixing ring 100 is fixed by rotating 90 ° in one direction with respect to the third mixing ring 100. In addition, since the fifth mixing ring 100 is rotated by 90 ° in one direction with respect to the fourth mixing ring 100, the direction and angle of the fifth mixing ring 100 and the first mixing ring 100 are the same. Done.

4A to 4D are views illustrating the direction of the mixing ring 100 according to the rotation of the burner fuel transfer unit according to an embodiment of the present invention.

Referring to FIG. 4A, the first mixing ring 100 may be denoted as ①, and may be represented as ②, ③, and ④ in order according to the rotated and coupled direction.

Referring to FIG. 4B, since the mixing ring 100 rotates together when the rotating shaft 200 rotates 90 ° in one direction, the first mixing ring 100 is the same as the second mixing ring 100 before the rotation. Will be oriented. In addition, since the other mixing ring 100 also rotates, it may be represented as ②, ③, ④ and ① as compared with the ①, ②, ③ and ④ in Figure 4a.

When the rotating shaft 200 is further rotated by 90 °, the rotary rings may be represented as ③, ④, ① and ② as shown in FIG. 4C, and if continuously rotated, as indicated by ④, ①, ② and ③ as shown in FIG. 4D. Can be.

5 is a view showing the coupling of the rotating shaft and the mixing ring 100 of the burner fuel transfer unit according to an embodiment of the present invention, and FIG. 6 is a view showing the coolant flow of the burner fuel transfer unit according to an embodiment of the present invention.

The rotating shaft 200 and the mixing ring 100 are formed to have an empty space for cooling water input therein, and both end sides of the mixing ring 100 are connected to and supported by an inlet 220 formed through the rotating shaft 200. . In addition, one side of the mixing ring 100 is connected to and supported by an outlet 230 formed through the rotating shaft 200. At this time, the mixing ring 100 and the rotating shaft 200 may be connected to each other through the inlet 220 and the outlet 230 in a hydrodynamic manner. In addition, the inlet 220 and the outlet 230 are hydrodynamically disconnected by the partition wall 210 installed inside the rotating shaft 200.

Referring to FIG. 6, the rotating shaft 200 and the mixing ring 100 may be cooled by the cooling water. The cooling water transferred from one side of the rotating shaft 200 is blocked by the partition wall 210, and thus mixed through the inlet 220. It flows into the ring 100. The cooling water introduced into the mixing ring 100 passes through the mixing ring 100 and is discharged into the rotating shaft 200 through the outlet 230, and the discharged cooling water moves along the rotating shaft 200 to mix the mixing ring 100. ) And the mixing ring 100 and the rotating shaft 200 may be cooled while passing sequentially. That is, the cooling water flow path may be formed by alternately flowing the cooling water through the rotating shaft 200 and the mixing ring 100 by the partition wall 210.

Meanwhile, in one embodiment of the present invention, two inlets are formed for smooth inflow of cooling water, but the number of inlets and outlets is not limited thereto.

7 is a view showing a combination of the rotary shaft and the mixing ring of the burner fuel transfer unit according to another embodiment of the present invention.

When the cutting unit 110 of the mixing ring 100 is inclined toward one end of the rotating shaft 200 and coupled to the rotating shaft 200, the inlet 220 and the outlet 230 are predetermined to each other in the longitudinal direction of the rotating shaft 200. It may be located at intervals apart. Therefore, the partition wall 210 may be installed perpendicularly to the longitudinal direction of the rotation shaft 200, so the operation is easy.

Operation of the burner fuel transfer unit according to the embodiment of the present invention is as follows.

Fuel is injected through the fuel supply pipe, and the fuel is burned while being transported along the rotating shaft 200. At this time, the fuel is transported while being mixed by the mixing ring 100, it is not transported continuously in one direction, but is transported while repeating the forward and backward. That is, in the case of a general screw, the fuel is quickly transferred only in one direction along the screw, but in the case of the present invention, the fuel is transported to the ash discharge pipe side while being mixed with each other repeatedly, and discharged. Therefore, air is supplied evenly throughout the fuel without agglomeration of fuel and can be burned with sufficient time, so that complete combustion is possible.

According to another embodiment of the present invention, a plurality of protrusions may be formed to protrude to a predetermined height along the outer circumference of the mixing ring 100, which is for a smooth fuel transfer. A portion of the fuel may accumulate at the bottom of the combustion chamber during the transfer of the fuel, or may adhere to the surface of the combustion chamber and thus may not be normally transferred. The projection is for preventing this, and the fuel accumulated in the combustion chamber can be reliably transported by being scratched by the projection.

In addition, an air supply port may be formed on the wall of the combustion chamber for smooth combustion of the fuel, and the air supply port may be closed by the fuel so that the air supply may not be normally performed. In this case, the fuel is incompletely burned, resulting in a problem that the combustion efficiency is lowered. However, according to another exemplary embodiment of the present invention, the fuel blocking the air supply port is transferred by the protrusion to open the air supply port, and normal air supply through the air supply port is possible.

According to the conventional burner, there is a problem that incomplete combustion occurs because the solid fuel transported along the screw is not mixed well and the air supply is not sufficient.

In addition, since the solid fuel is transported along the screw at a constant speed, fuel that has not been sufficiently burned is also discharged to the outside of the combustion chamber and is wasted.

In addition, when the fuel is agglomerated and stuck to the screw during the transfer of the fuel there is a problem that the transfer is undesired and accumulated.

However, according to the burner fuel transfer unit of the present invention, the fuel is transported while being evenly mixed, and the fuel is discharged after repeating forward and backward combustion sufficiently, thereby maximizing the contact between the fuel and air and ensuring sufficient combustion time. Efficiency can be maximized, more combustion performance can be achieved with the same amount of fuel, and greenhouse gas emissions can be minimized. In addition, it is possible to prevent the accumulation of solid fuel during transportation, thereby preventing combustion failure and smooth operation of the burner.

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.

Claims

In the fuel transfer section of the burner is formed in the combustion chamber, and having a fuel supply for supplying solid fuel to the combustion chamber and a ash discharge portion for discharging ash from the combustion chamber,

A rotating shaft disposed from the fuel supply part toward the ash discharge part; And

A plurality of ring-shaped mixing rings having a ring shape into which the rotating shaft can be inserted and fixedly coupled to the rotating shaft to surround the rotating shaft;

Including,

And the mixing ring is disposed to be inclined with respect to the rotating shaft.
The method of claim 1, wherein the mixing ring,

The burner fuel transfer unit is installed to be inclined with respect to the longitudinal central axis of the rotary shaft, and arranged sequentially in a spiral shape along the longitudinal direction of the rotary shaft.
The method of claim 2, wherein the mixing ring,

Burner fuel transfer unit characterized in that arranged sequentially in a spiral form by 90 ° in the circumferential direction from the longitudinal center axis of the rotation axis.
The method of claim 2,

The burner fuel transfer unit is characterized in that the inner shaft is formed so that the cooling shaft flows.
The method of claim 4, wherein

The mixing ring has an internal space is formed so that the cooling water flows, the inlet and outlet are formed through the rotating shaft, the mixing ring is connected to the inlet and the outlet so that the rotating shaft and the inside communicate with each other Burner fuel delivery.
The method of claim 5,

Partition wall installed in the rotating shaft to partition the inside of the rotating shaft

More,

The barrier rib is disposed between the inlet port and the outlet port so that the cooling water flows into the inlet port and discharged to the outlet port.
The method of claim 5,

One side of the mixing ring is cut so that both ends are eccentric with each other,

The inlets are formed in pairs and are connected to both ends of the mixing ring, respectively.

And the inlet is positioned on the same outer periphery in a direction perpendicular to the longitudinal center axis of the rotational shaft.
The method according to any one of claims 1 to 7,

Burner fuel transfer unit characterized in that the plurality of protrusions protrude to a predetermined height along the outer periphery of the mixing ring.