KR101344606B1 - Combusion apparatus of pellet fuel - Google Patents

Abstract

The present invention relates to a combustion apparatus of pellet fuel. and is configured with; installation of a combustion barrel provided with two upper and lower stages of an upper stage grate and a lower stage grate wherein two bent grates face each other in V shape of left/right symmetry having a gap in a middle part so that the pellet fuel may burn in stages inside a combustion chamber provided with dual fire-resistant walls; and formation of a lower end part of a prop of each grate as a free end to prevent lumping of the pellet fuel. According to the present invention, when pellet fuel becomes thin during combustion, the fuel drops out to a lower side to be completely burnt at the lower end grate so that only ashes fall down to an ashpan to be collected; and the prop at the free end of each grate undergoes physical deformation according to a change in combustion temperatures to prevent fuel lumping by moving the burning fuel for continuous, more satisfactory, complete combustion allowing provision of high heat energy to a stove, a water heater, a boiler, etc.

Description

Combustor of pellet fuel {COMBUSION APPARATUS OF PELLET FUEL}

The present invention relates to a combustor of pellet fuel, which will be described in more detail. In the combustion chamber of the double refractory wall of the combustor, two bent throttles are left and right symmetrically with a gap in the middle so that the pellet fuel is gradually burned. The upper throttle facing the V-shape and the lower throttle with narrower gap of the lattice are installed with the upper and lower two stages, and the lower end of the rib of each throttle is formed with the free end to prevent agglomeration of pellet fuel. It is configured.

Conventionally, various types of combustors of pellet fuel are known, and examples of the prior art are as follows.

Wood pellet combustor of Korean Patent Publication No. 10-2011-0120028 (published on Nov. 3, 2011) is provided with a grate at the bottom, and the pellets in the grate are air supplied through the first and second vents in the side and bottom directions. A combustion chamber which is burned by to generate a flame; Air is introduced through a blower installed at one side of the outer cylinder, but the lower portion of the first vent and the first vent space at regular intervals inside the outer cylinder can blow air into the combustion chamber through the second vent at the bottom of the grate. An air supply unit formed of a second venting unit; An ignition generating unit installed in the second vent in the lower part of the grate to ignite the pellet by the electric heater; The pellets are sequentially transported and the air is supplied to the first vent part so that the pellet supply part facilitates the drying and feeding of the pellets.

Pellet boiler combustor of the registered Patent No. 10-1151156 (announced on May 22, 2012) is a combustion vessel that is burned with the pellets received; Pellet supply means for supplying pellets to the combustion container; An igniter that applies heat to the pellets supplied to the combustor to ignite the pellets and provides the pellets with air supplied from the outside to burn the ignited pellets; A blower for providing air to the igniter; And pellet stirring means for stirring the pellets contained in the combustor.

Pellet burner for reforming combustion of Patent No. 10-1165183 (2012.07.05) is a crucible burner in which primary combustion combusting pellets proceeds, and is disposed in an upper region of the crucible burner, and the primary combustion is performed. A combustion main body having a reformed combustion chamber in which secondary combustion for reforming and combusting combustion combustion generated by the combustion chamber is carried out; A fuel supply unit coupled to a lower region of the combustor body and supplying the pellet fuel to the crucible burner; A redistribution unit detachably coupled to an upper region of the combustion main body and discharging ash generated by the primary combustion to the outside; A first combustion air supply pipe for supplying primary combustion air to the crucible burner; A second combustion air supply pipe for supplying secondary combustion air to the reforming combustion chamber; It includes a reforming water supply unit for supplying steam to the reforming combustion chamber.

The combustor of the pellet boiler of Korean Patent Publication No. 10-1188901 (published on Sep. 28, 2012) has an ignition holder in which an upper and a lower part are opened and an outer part is closed and an igniter for igniting pellets is formed on the front side. A combustion case having a blower for supplying air such that the pellet ignited by the ignition holder is burned; The front and the top is open and the rear and left and right sides are closed, The rear and left and right sides are integrally installed on the inner front of the combustion case; An inclined member integrally installed to open the front surface of the inner wall member and closed from the center portion to the rear surface, the inclined member being inclined downhill from the rear surface of the inner wall member to the front surface; Pellets which are integrally installed on the inner front side of the combustion case and the inner rear side of the inner wall portion while being spaced apart from the inclined portion by an upper portion and ignited by the ignition heat of the igniter and burned by air supplied from the blower holder It is configured to include a combustion network accommodated.

A common feature of the above-described prior art invention is that the pellet fuel is irrigated with a simple wood solid fuel and the pellet fuel is burned while supplying primary air or secondary air by means of a blower on the mesh or grate.

Pellet fuel, unlike ordinary firewood, is a small columnar shaped product with a diameter of about 6 mm and a length of 30 mm, formed by pressing a heating material, mainly waste wood powder, at high pressure by pressing. The crimp density is very high.

Therefore, the pellet fuel is surface burned in the lost grate. That is, since oxygen does not flow into the pellet fuel, when ashes are removed by surface combustion, the oxygen is brought into contact with the next layer of the fuel, and then combustion proceeds gradually. As the combustion of the pellet fuel proceeds, the pellet fuel is increased. It burns as its thickness becomes thinner.

Therefore, the fuel thinner than the gap of the roaster has a problem in that it is dropped to the lower side of the roaster and remains as a carbide or unburned state on the ash tray.

In addition, when pellet fuel is burned in a small mesh net, fuel is not dropped into the net before the pellet fuel is completely burned, and coal pellets of pellet fuel are stuck on the mesh, so that continuous pellet fuel is not supplied. However, there is a problem that the pellet fuel is carbonized by transferring heat of the combustion chamber to the supply pipe in which the pellet fuel is stopped.

Therefore, there is a cumbersome problem that must be burned while repeating the operation of stirring or dispersing fuel with a brown barbecue.

According to the present invention, in order to correct the conventional problems, in consideration of the characteristics of the surface combustion, the pellet fuel is burned in stages in the middle of the combustion chamber of the double refractory wall of the combustor body so that the bent fuel is stepped into two intermediate portions The upper throttle facing the symmetrical V-shape with the gap between them and the lower throttle with the narrower gap of the lattice are installed with two stages up and down, and the left and right of each throttle to prevent the pellet fuel from agglomeration We developed a pellet combustor configured to form a free end of the lower end of the stool facing.

SUMMARY OF THE INVENTION An object of the present invention is to provide a combustor of pellet fuel, in which a combustion fuel installed in a combustion chamber of a combustor is provided with two upper and lower stages having different lattice spacings in two stages, and the pellet fuel is completely burned in stages.

Still another object of the present invention is to form a free end of the upper end of the lattice ribs of the upper roaster and the lower roaster provided in the combustion cylinder to pellet by physical deformation of the free end of the roaster in accordance with the temperature change of the heat of combustion of the fuel It is to provide a combustor of pellet fuel which is easily burned while moving the fuel to prevent agglomeration.

In order to achieve the above object of the present invention, a rectangular cube combustor is connected with a supply pipe of pellet fuel through a supply pipe at an intermediate upper end portion of a combustor body to supply pellet fuel to the combustion chamber in a downward movement.

A combustion chamber made of a refractory wall in which the refractory material is embedded in the spaces of the left and right double side walls of the combustor main body is formed in the middle part of the main body, and is installed in the front opening of the main body so as to be opened and closed by a hinge and provided at the door. It is equipped with a damper to prevent the emission of flame, and the rear of the main body is provided with a flame opening for providing thermal energy in combination with the stove of the various stoves, water heaters, boilers.

A combustion cylinder is installed in the middle of the combustion chamber of the combustor, and two bent throttles are disposed in the combustion cylinder so that the pellet fuel is burned in stages, and the upper throttle facing each other in a V-shape with a left and right symmetry, The lower throttle with narrower gap is provided with two stages up and down, and the lower part of the rod of each throttle is formed at the free end to prevent agglomeration of the pellet fuel. It is mounted on the bottom of the combustion chamber so that it can be put in or taken out through the opening of the body.

The combustor of the pellet fuel of the present invention having the above-described configuration uses a flame outlet in association with various types of stoves, water heaters, and boilers.

Pellet fuel is accumulated in the upper throttle of the combustion cylinder installed inside the combustion chamber of the combustor by the downward movement through the supply pipe in the pellet fuel supply cylinder. When the door of the combustor is opened, the pellet fuel is ignited through the opening, and the door is closed, the pellet fuel accumulated in the upper roast of the combustion cylinder is combusted by air supplied naturally through the air supply holes provided in the door.

If the fuel is thinned by the surface combustion of the pellet fuel at the upper roaster, it falls into the lattice gap of the upper roaster and falls downward, and the pellet fuel is replenished to the upper roaster of the combustion tank by the amount of the fuel discharged. Combustion continues as it is supplied.

The thinned fuel that falls from the upper roaster of the combustion tank to the lower roaster continues to be combusted by the air supplied from the air supply holes provided in the door. Since the lattice spacing of the lower roaster is narrower than that of the upper roaster, the thinned fuel is combusted without falling down. When the fuel is completely burned and finally ashed, it is dropped from the lower throttle and collected in the ash tray on the lower side. The ash accumulated in the ash tray can be opened and removed through the opening.

In the present invention, even if the pellet fuel is burned in the upper roaster and the lower roaster, only the combustion position is different and corresponds to the primary combustion.

In addition, unlike the gas fuel, pellet combustion does not have a constant temperature of combustion heat, and when the temperature of the combustion heat is changed, the free ends of each roasting rib cause a physical deformation, which causes the pellet fuel to move to prevent agglomeration of fuel.

Therefore, even without the addition of a separate stirring device, even if the fuel pellets are not disturbed in the roaster one by one with the filing hook, the fuel is well burned completely without any agglomeration.

In addition, since the pellet fuel is gradually moved downward in the upper and lower roasters of the combustion cylinder, the pellet fuel is continuously moved and supplied to the lower combustion chamber through the supply pipe in the pellet fuel supply tank. The heat of combustion in the combustion chamber does not affect the supply pipe and there is no fear that the pellet fuel in the supply pipe may be unintentionally carbonized.

In addition, the internal pressure of the combustion chamber may be momentarily high due to the change in the thermal power of the fuel combusted in the combustion cylinder's roaster. In such a case, the damper provided in the air supply hole may close the supply hole internally by the internal pressure of the combustion chamber. Therefore, the flame in the combustion chamber can be safely used without being blown out of the air supply hole.

In addition, combustion heat and combustion gas are directed to the side of the flame opening. This is not a function of the combustor itself, but is induced by the suction power of a combustor combined with a combustor, a water heater, or the combustion chamber of a boiler, or the suction power of an exhaust fan. Through the air supply.

The heat of combustion of the pellet fuel combusted in the combustion chamber is introduced into the fireplace of the counterpart, the water heater, or the boiler through the fireball to provide thermal energy.

According to the present invention, two bent throttles are disposed in a combustion chamber equipped with a fireproof wall of a combustor main body so that pellets can be burned in stages. Since the lower end of the narrower bottle is provided with a two-stage upper and lower combustion cylinder, fuel supplied from the pellet fuel supply tube through the supply pipe is combusted at the upper loom of the combustion cylinder, and as the combustion proceeds, When thinned, the pellet is moved to the lower roaster and the remaining fuel is combusted.

Therefore, the fuel can be continuously supplied from the feed pipe of the pellet fuel, and the pellet fuel of the feed pipe is not affected by the heat of combustion due to the continuous movement of the fuel.

Also, in order to prevent the pellet fuel from agglomeration, the lower end of the rib of the upper roaster and the lower roaster provided in each combustion cylinder is formed at the free end, so the free end of each roaster is changed according to the temperature change of the combustion heat of the pellet fuel. This will cause the fuel to move and prevent clumping, leading to deformation.

Therefore, it is easy to use because it is easily burned without the addition of a separate fuel agitating means and the fuel is not disturbed by the hooks.

In addition, the combustor of the present invention can be usefully used in combination with various stoves, water heaters, boilers, and the like.

1 is a perspective view of a supply cylinder of the combustor and pellet fuel of the present invention
Figure 2 is a perspective view showing the configuration inside the combustion chamber by removing the top plate of the combustor body of the present invention
3 is a cross-sectional view of the combustor body of the present invention.
4 is a perspective view of a combustion cylinder of the present invention
5 is a plan view of the combustion cylinder of the present invention;
6 is a side view of the combustion cylinder of the present invention;
7 is a cross-sectional view of the combustion cylinder of the present invention.
8 is an exemplary view of the upper roaster of the present invention.
Figure 9 is an illustration of a lower roaster of the present invention
10 is a diagram illustrating the operation of the combustor of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a combustor main body and a pellet fuel supply cylinder of the present invention, in which a supply cylinder B of pellet fuel is connected through a supply pipe D to a middle upper portion of a main body 1 of a combustor BN formed of a rectangular cube. have.

As shown in FIG. 2, the combustor main body 1 has the fireproof wall 2w in which the refractory material is built in the space part a of the side wall 1w which is doubled to the left and right of the combustion chamber 2, and the main body 1 is carried out. In the front opening 1a, the door 1b is installed to be opened and closed by the hinge 1h, and the air supply hole 1c provided in the door 1b is provided with a damper 1d for preventing the ejection of flame. At the rear of (1), there is provided a flame opening (1u) which is connected to various types of stoves, a water heater, and a boiler (H) to blow out the flame.

As shown in Figs. 2 and 3, in the combustion chamber 2, the upper roaster 3 and the lower roaster 4, in which the pellet fuel p is burned in stages, between the refractory walls 2w, are upper and lower two. The combustion cylinder 5 provided with the stage is across the bending piece 2f of the said fire-resistant wall 2w by the flange 5f provided in the upper end part of the side plates 5a and 5b of the said combustion cylinder 5 It is installed and placed on the bottom of the combustion chamber 2 on the lower side of the combustion cylinder 5 so that a normal ash tray 6 can be put in or taken out through the opening 1a.

As shown in Figs. 4-7, the combustion cylinder 5 has two bent throttles 3a and 3b in which the lattice spacing c1 is about 1/2 the size of the pellet fuel. The upper throttle 3 facing the lateral symmetrical V-shape with the gap C at its part is connected to the flange 3f of the upper throttle 3 between the left and right side plates 5a and 5b of the combustion cylinder 5. Two bent throttles (4a) (4b), each of which is fixed by means of a grid spacing (c2) about one third of the thickness of the pellet fuel, have a gap (C) in the middle and a symmetrical V-shape. The lower loast 4 facing each other is fixed to the left and right side plates 5a and 5b of the combustion cylinder 5 in the form of surrounding the upper locus 3 at regular intervals up and down, and the upper locus 3 And the lower ends of the ribs R of the lower throttle 4 are free ends E. FIG. 8 and 9 show exemplary views of the upper roaster 3 and the lower roaster 4.

Since the combustion cylinder 5 consists of one structure provided with the upper roaster 3 and the lower roaster 4, it may be installed or lifted out of the combustion chamber 2, 3) (4) can be cleaned and replaced.

As shown in Fig. 10, the combustor BN of the present invention configured as described above uses the flame opening 1u of the combustor main body 1 in the fire chambers H of various stoves, water heaters, and boilers.

Pellet fuel p is supplied in a downward movement from the supply cylinder B of the pellet fuel to the inside of the combustion chamber 2 of the combustor main body 1 through the supply pipe D, so that the upper loom 3 of the combustion cylinder 5 is supplied. Stacked). Opening the door 1b of the opening 1a of the combustor main body 1, igniting the pellet fuel p contained between the roasters, and closing the door 1b, the air supply hole 1c provided in the door 1b is opened. Pellet fuel p is combusted in the upper roaster 3 of the combustion cylinder 5 by the air naturally supplied through it.

Since the pellet fuel p contained in the upper roaster 3 of the combustion cylinder 5 is surface combustion, the pellet fuel p becomes thin as the combustion proceeds, and the thinned combustion fuel of the upper roaster 3 Through the lattice gap c1 and the intermediate gap C, the fuel exits downward and falls, and the pellet fuel is continuously supplied to the upper throttle 3 in the supply pipe D as much as the fuel escapes, so that the combustion operation is continued. do.

The fuel thinned during combustion dropped from the upper roaster 3 of the combustion cylinder 5 to the lower roaster 4 has a lower lattice spacing c2 of the lower roaster 4 since the lower roaster is narrower. The combustion action is continued in the lower throttle 4 by the air supplied through the air supply hole 1c contained in (4).

In the same way as the upper roaster 3, the lower roaster 4 is smoothly supplied with air, so that the pellet fuel p is completely burned in the lower roaster 4, and finally, the lower roaster 4 is finally ashed. It is dropped in and collected in the ash tray (6).

When pellet fuel p is combusted in the upper roaster 3 and the lower roaster 4 of the combustion cylinder 5, respectively, according to the change of temperature, the ribs R of the respective roasters 3 and 4 The free end E causes deformation of the pellet fuel p during combustion, thereby preventing the pellet fuel p from agglomerating.

Therefore, the pellet fuel is burned while the pellet fuel is sequentially moved in the upper roaster 3 and the lower roaster 4 without coalescing on each roaster 3 and 4 of the combustion cylinder 5. Since the fuel is not only completely burned smoothly, but also the pellet fuel is continuously transferred and supplied through the supply pipe D in the supply cylinder B, the heat of combustion of the combustion cylinder 5 does not affect the supply pipe D of the fuel.

In addition, the internal pressure of the combustion chamber 2 may be momentarily increased due to the change of the thermal power in the combustion cylinder 5, in which case the damper 1d provided in the air supply hole 1c is supplied by the internal pressure of the combustion chamber. The pores 1c are closed from the inside, so that the flame in the combustion chamber 2 can be safely used without being blown out of the air supply holes 1c.

Combustion gas and the heat of combustion including the flame in which the pellet fuel p was burned in the combustion cylinder 5 of the combustion chamber 2 are ejected to the flame opening 1u side of the combustor main body 1. As shown in FIG. The reason why the combustion gas is blown out to the side flame port (1u) is not the function of the combustor itself, but the suction force of an unillustrated communication, or exhaust fan, provided in the fire chamber (H) of the stove, the water heater, or the boiler combined with the combustor. It is made by the attraction force of.

In addition, the air supply action is naturally made corresponding to the suction force on the flame opening 1u side through the air supply hole 1c of the combustor body 1.

Since the combustion efficiency of the pellet fuel is high in the combustion chamber (2), high heat energy can be obtained, and the high heat energy is transferred to the fireplace (H) of the other stove, the water heater, or the boiler through the flame opening (1u) of the main body (1). Will be provided.

In addition, since the composition of the combustor is simple, there are few elements to cause a failure, and there is no special operation and management during the combustion of ferrite fuel, it is very convenient to use.

1: combustor main body 1a: opening part 1b: door 1c; Supply Air 1d: Damper
1h: Hinge 1u: Fireball 1w: Side plate
2: combustion chamber 2f: bending piece 2w: fireproof wall
3: upper roast 3a, 3b: lost 3f: frangipani
4: Lower Lost 4a, 4b: Lost
5: combustion cylinder 5a, 5b: side plate 5f: flange
6: reclaim
B: Pellet supply tank C,: Lost gap
c1, c2: Grid spacing D: Supply pipe for pellet fuel
E: free end R: rod BN: combustor

Claims (4)

The combustion chamber 2 in which the fireproof wall 2w was formed, the door 1b provided by the hinge 1h in the opening part 1a which the ash tray 6 enters, and the air supply hole 1c provided in the said door 1b. A main body (1) of the combustor (BN) provided with a damper (1d) for preventing the ejection of the flame provided in the air supply hole (1c), and a flame port (1u) for ejecting the flame;
Installed in the combustion chamber (2), the two bent throttle (3a) (3b) to face the gap (C) in the middle of the left and right symmetrical V-shape so that the pellet fuel is burned in stages as the fuel is thinned by the surface combustion The upper throttle 3 and the two bent throttles 4a and 4b are symmetrical V-shaped, and the lower throttles 4 facing each other with a gap C in the middle are spaced in two steps up and down. A combustion cylinder 5 provided;
Combustor of pellet fuel, characterized in that configured to include. delete The method of claim 1,
The lattice spacing c1 of the upper roaster 3 provided in the combustion cylinder 5 is half the size of the pellet fuel thickness, and the lattice spacing c2 of the lower roaster 4 is 1 of the pellet fuel thickness. Combustor of pellet fuel, characterized in that the size of / 3. The method of claim 1,
A combustor for pellet fuel, characterized in that a plurality of ribs (R) having a lower end formed as a free end (E) are extended to each of the upper roaster (3) and the lower roaster (4).

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