JP6703607B2 - Burner device - Google Patents

Description

Embodiments of the present invention relate to a burner device, and more particularly to a burner device that can raise the temperature of exhaust gas.

Normally, the burner device burns fuel by a fuel supply unit and an ignition unit provided inside to generate a flame. The generated flame raises the temperature of the inflowing exhaust gas. Specifically, the flame is produced in the combustion chamber.

Conventionally, in order to prevent the thermal energy of the flame generated in the combustion chamber from being lost due to the temperature outside the burner device, it is necessary to surround the outside of the burner device with a heat insulating material. As a result, there are problems such as a reduction in the degree of freedom of the installation space of the burner device and an increase in cost due to the use of a heat insulating material.

Further, since the exhaust gas that has flowed into the combustion chamber has a flow that interferes with the generation of the flame, there is a problem that the flame is deflected and generated by the inflowing exhaust gas. In such a case, there is a problem that the combustion chamber of the burner device is heated or it is difficult to effectively raise the temperature of the exhaust gas.

Embodiments of the present invention provide a burner device that can effectively raise the temperature of exhaust gas.

According to an embodiment of the present invention, a burner device for raising the temperature of exhaust gas is provided with an outer housing, one end of which is spaced apart from one end of the outer housing, and the other end of which is disposed above the outer housing. An inner housing that is supported by the other end of the outer housing and forms a combustion chamber; a porous member that is arranged between one end of the outer housing and one end of the inner housing; and an inner peripheral surface of the outer housing. And a first support member that separates and supports the outer peripheral surface of the inner housing; and a second support member that separates and supports the porous member and the inner housing.

The outer housing may further include an exhaust gas inlet formed at the other end of the outer housing.

The porous member includes a first porous support portion arranged to face one end of the outer housing, a second porous support portion supported by the second support member, and the first porous support portion. A porous portion having an inner diameter that gradually increases from the porous support portion toward the second porous support portion, and a plurality of holes are formed in the porous area.

The exhaust gas flowing into the exhaust gas inlet passes between the outer housing supported by the first support member and the inner housing in the direction of one end of the outer housing. Into the combustion chamber, the porous portion is passed through between the porous member supported by the second support member and the inner housing.

Further, the flow rate of the exhaust gas passing between the porous member and the inner housing is higher than the flow rate of the exhaust gas passing through the porous portion.

The burner device may further include a fresh air inflow part connected to one end of the outer housing and guiding fresh air into the combustion chamber.

The burner device may further include a mixing unit that mixes fresh air flowing into the combustion chamber with exhaust gas flowing into the combustion chamber.

In addition, the first support member may include a plurality of inner housing supports arranged radially from an inner peripheral surface of the outer housing toward an outer peripheral surface of the inner housing along a longitudinal direction of the outer housing. Parts may be included.

The second support member may include a plurality of porous member support portions radially spaced from the outer peripheral surface of the porous member toward the inner peripheral surface of the one end of the inner housing. ..

According to the present invention, the burner device can effectively raise the temperature of the exhaust gas.

It is a figure which shows the internal structure of the burner apparatus which concerns on one Example of this invention. It is a figure which shows the porous member of FIG. It is a figure which shows the internal structure of FIG. It is a figure which shows the mixing member of FIG. It is a figure which shows the system containing the structure of FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the embodiments. The present invention can be variously modified and carried out, and is not limited to the below-described embodiments.

The accompanying drawings are schematic and are not shown to scale. Relative dimensions and proportions of components shown in the drawings are exaggerated or reduced in size for the sake of clarity and convenience in the drawings, and arbitrary dimensions are merely examples and are not limitative. It's not the one. Also, like components and parts in two or more figures are marked with the same reference numerals to show similarities in features.

The embodiments of the present invention specifically show preferred embodiments of the present invention, and various illustrations are expected. Thus, the embodiments are not limited to the particular forms shown, but also include, for example, manufacturing variants.

Hereinafter, a burner device 101 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4.

As shown in FIG. 1, a burner device 101 according to an embodiment of the present invention includes an outer housing 100, an inner housing 200 forming a combustion chamber 210, a porous member 300, a first support member 400, and The second supporting member 500 is included.

The outer housing 100 forms the exterior of the burner device 101. Specifically, the outer housing 100 may have a cylindrical shape in which one direction is long and the inside is hollow.

The inner housing 200 is at least partially disposed within the outer housing 100. In addition, one end of the inner housing 200 is disposed inside the outer housing 100 apart from one end of the outer housing 100. The other end of the inner housing 200 is supported by the other end of the outer housing 100. The inner housing 200 forms a combustion chamber 210. Specifically, one region of the outer peripheral surface of the inner housing 200 is provided inside the outer housing 100 so as to be separated from the inner peripheral surface of the outer housing 100, and inside the one region of the inner housing 200, The combustion chamber 210 may be provided so that a fuel that is not shown and a flame that is burned by an ignition device are formed.

The porous member 300 is disposed between one end of the outer housing 100 and one end of the inner housing. Specifically, the porous member 300 can be disposed in front of one end of the inner housing 200 separated from one end of the outer housing 100.

The first support member 400 separates and supports the inner peripheral surface of the outer housing 100 and the outer peripheral surface of the inner housing 200. That is, the first support member 400 can support the outer peripheral surface of the inner housing 200 so as to be spaced apart from the inner peripheral surface of the outer housing.

The second support member 500 separates and supports the porous member 300 and the inner housing 200. Specifically, the second support member 500 can be supported so that the outer peripheral surface on the other side of the porous member 300 and the inner peripheral surface at one end of the inner housing 200 are separated from each other.

Therefore, the exhaust gas is supplied to the combustion chamber 210 through the space separated by the first supporting member 400 and the second supporting member 500, and is heated.

In addition, the outer housing 100 of the burner device 101 according to the embodiment of the present invention further includes an exhaust gas inlet 130 as shown in FIG.

The exhaust gas inlet 130 may be provided at the other end of the outer housing 100. Specifically, the outer housing 100 may include a first through hole 100, a second through hole 120, and an exhaust gas inlet 130.

The first through hole 110 may be formed on one side of the outer housing 100. The second through hole 120 may be formed on the other side of the outer housing 100 that faces the first through hole 110. The exhaust gas inlet 130 may be formed on the outer peripheral surface of the other end of the outer housing 100.

That is, the exhaust gas inlet 130 is formed on the outer peripheral surface of the outer housing 100, and is formed so as to be relatively adjacent to the second through hole 120 rather than the first through hole 110.

The second through hole 120 may support the other end of the inner housing 200. Specifically, the discharge port 220 formed at the other end of the inner housing 200 is inserted into the second through hole 120 and is projected and supported from the second through hole 120 to the outside.

That is, one end of the inner housing 200 is supported by the first support member 400, and the other end of the inner housing 200 is supported by the second through hole 120 of the outer housing 100.

Therefore, the exhaust gas that has flowed in through the exhaust gas inlet 130 passes through the longitudinal direction toward one end of the inner housing 200 and flows into the combustion chamber inside the inner housing 200.

Further, the porous member 300 of the burner device 101 according to the embodiment of the present invention includes a first porous support portion 310, a second porous support portion 320, as shown in FIGS. 1 and 2 described above. And, it may include a porous portion 330 including a porous region in which a plurality of holes 331 are formed.

The first porous support part 310 may be provided to face one end of the outer housing 100.

The second porous support part 320 is supported by the second support member 500. Specifically, the outer peripheral surface of the second porous support portion 320 is supported by the second support member 500 while being separated from the inner peripheral surface of the one end portion of the outer housing 200.

The porous part 330 may be formed between the first porous support part 310 and the second porous support part 320. In addition, the porous portion 330 may include a porous region whose inner diameter gradually increases in a direction from the first porous support portion 310 to the second porous support portion 320. A plurality of holes 331 are formed in the porous region.

Therefore, the exhaust gas flows into the combustion chamber 210 via the porous portion 330. The exhaust gas that has passed through the plurality of holes 331 has a uniform flow rate when flowing into the combustion chamber 210.

In addition, the exhaust gas that flows into the exhaust gas inlet 130 of the burner device 101 according to the embodiment of the present invention is discharged between the outer housing 100 and the inner housing 200 as shown in FIGS. Through the outer housing 100 toward the one end of the outer housing 100 and into the combustion chamber 210 through the porous member 330 and the inner housing 200.

The exhaust gas that has flowed into the exhaust gas inlet 130 passes through the first space S<b>1 formed between the outer housing 100 and the inner housing 200 with the first support member 400 separated from each other, and the combustion chamber 210. It can be moved in a direction toward the one end of the outer housing 100 by surrounding the outside.

Further, the exhaust gas that has moved to one end of the outer housing 100 is separated from the plurality of holes 331 of the porous portion 330 and the second supporting member 500 between the second porous supporting portion 320 and the inner housing 200. It is supplied to the combustion chamber 210 after passing through the second space S2 formed by the above.

Therefore, at the beginning of the operation of the burner device 101, the temperature outside the combustion chamber 210 is raised by the temperature of the exhaust gas passing through the first space S1. Further, the exhaust gas passing through the first space S1 can reduce heat loss of the exhaust gas heated by the flame of the combustion chamber 210 due to the external temperature of the outer housing 100.

Further, the burner apparatus 101 of the present invention effectively reduces the cost of the heat insulating material for surrounding the outside of the burner apparatus in order to reduce the heat loss in the conventional burner apparatus due to the exhaust gas passing through the first space S1. Can be reduced to.

In addition, the flow rate of the exhaust gas that passes between the porous member 300 and the inner housing 200 of the exhaust gas that flows in through the exhaust gas inlet 130 of the burner device 101 of the present invention is the exhaust gas that passes through the porous portion 330. It is larger than the gas flow rate.

Of the exhaust gas that has flowed in through the exhaust gas inlet 130, the flow rate of the exhaust gas that flows into the combustion chamber through the second space S2 between the porous member 300 and the inner housing 200 is equal to that of the porous portion 330. It becomes larger than the flow rate of the exhaust gas flowing into the combustion chamber 210 via the plurality of holes 331.

That is, the exhaust gas that flows into the combustion chamber 210 through the second space S2 is supplied to the combustion chamber 210 at a high flow rate. Therefore, the exhaust gas having such a high flow velocity maintains the temperature of the high temperature exhaust gas and is effectively supplied to the combustion chamber 210.

Further, the exhaust gas supplied to the combustion chamber 210 through the plurality of holes 331 of the porous portion 330 is supplied to the combustion chamber 210 while having a uniform flow. Even when the flame generated in the combustion chamber 210 hits the porous member 300, the flame and the porous member 300 are effectively separated by the exhaust gas passing through the plurality of holes 331.

For example, the flow rate of the exhaust gas flowing into the combustion chamber 210 through the second space S2 between the porous member 300 and the inner housing 200 flows into the combustion chamber 210 through the plurality of holes 331 of the porous portion 330. 15% to 20% higher than the exhaust gas flow rate.

In addition, the burner apparatus 101 according to the embodiment of the present invention may further include a new airflow inlet 600, as shown in FIG.

The fresh air inlet 600 is connected to one end of the outer housing 100 and can guide fresh air into the combustion chamber 210. Specifically, the fresh air inflow part 600 is connected to one side of the outer housing 100 in which the first through hole 110 of the outer housing 100 is formed. That is, the fresh air inflow portion 600 is supported by the first through hole 110. The fresh air that flows into the combustion chamber 210 through the fresh air inflow portion 600 contains oxygen necessary for combustion.

Therefore, the flame formed in the combustion chamber 210 is stably maintained by the fresh air supplied through the fresh air inflow portion 600.

In addition, the burner apparatus 101 according to the embodiment of the present invention may further include a mixing unit 700, as shown in FIGS. 1 and 4 described above.

The mixing unit 700 can mix fresh air and exhaust gas flowing into the combustion chamber 210. Specifically, the mixing unit 700 may include a mixing support member 710 and a mixing member 720. The mixing support member 710 can rotatably support the mixing member 720. The mixing support member 710 can be provided between the fresh air inflow portion 600 and the porous member 300.

The mixing member 720 may include a rotating plate 721 and a plurality of blades 722. That is, the rotary plate 721 is rotatably coupled to the mixing support member 710, and the plurality of blades 722 are provided on the rotary plate 721 so as to project therefrom.

Therefore, the flow of the fresh air that has flowed in causes the rotary plate 721 to rotate around the mixing support member 710, and the exhaust gas that has flowed into the combustion chamber 210 due to the swirls formed in the plurality of blades 722. The exhaust gas is effectively burned by mixing with fresh air.

Also, the first support member 400 according to an embodiment of the present invention may include a plurality of inner housing support parts 410, as shown in FIGS. 1 and 3 above.

The first support member 400 may be formed along the longitudinal direction of the outer housing 100. In addition, the first support member 400 may include a plurality of inner housing support members 410 that are radially spaced from the inner peripheral surface of the outer housing 100 toward the outer peripheral surface of the inner housing 200.

Specifically, one end of the first support member 400 is coupled to the inner peripheral surface of the outer housing 100, and the other end of the first support member 400 is in contact with the outer peripheral surface of the inner housing 200.

In addition, the other end of the first support member 400 may be in line or point contact with the inner housing 200. For example, the other end of the first support member 400 may include a contact surface 411 having a circular cross section.

Therefore, since the first support member 400 is in contact with the inner housing 200, even if the inner housing 200 expands due to the flame generated in the combustion chamber 210 formed by the inner housing 200, the outer housing 100 is not thermally deformed. The first support member 400 can effectively support thermal deformation of the inner housing 200 without occurring.

That is, when the inner housing 200 is thermally deformed by the flame generated in the combustion chamber 210 and slips toward one end of the inner housing 200, the contact surface 411 of the first support member 400 causes Thermal deformation of the inner housing can be effectively supported without the outer housing 100 deforming.

In addition, the second support member 500 according to the embodiment of the present invention may include a plurality of porous member support parts 510.

The second support member 500 may include a plurality of porous member support portions 510 that are radially spaced from the outer peripheral surface of the porous member 300 toward the inner peripheral surface of one end of the inner housing 200.

The second support members 500 are arranged radially from the outer peripheral surface of the second porous support portion 320 of the porous member 300 toward the inner peripheral surface of one end of the inner housing 200 so as to be spaced apart from each other. That is, the second support member 500 is radially separated from the outer peripheral surface of a region of the second porous support portion 320 of the porous member 300 inserted into one end of the inner housing 200 and the inner housing 200. A plurality of porous member supporting portions 510 arranged in parallel may be included.

Specifically, one side of the second support member 500 is coupled to the second porous support portion 320 of the porous member 300, and the other side of the second support member 500 is attached to the inner peripheral surface of the inner housing 200. Can be contacted. In addition, the second support member 500 may also include the contact surface 411 of the first support member 400.

Therefore, even when the porous member 300 is thermally deformed by the flame generated in the combustion chamber 210, the second support member 500 causes the slip of the porous member 300 supported only by the second support member 500. Can be effectively supported.

That is, since the porous member 300 is supported by the second support member 500 of the burner device 101, the second member is supported by the second support member 500 even if slip due to thermal deformation occurs without any other constraint condition. The supporting member 500 can effectively support the moving porous member 300.

Hereinafter, an operation process of the system 102 including the burner device 101 of the present invention will be described with reference to FIGS.

The engine 10 burns fuel to generate power. At this time, the engine 10 emits exhaust gas. The exhaust gas discharged from the engine 10 passes through the turbine 200 and the main exhaust passage 80.

A reactor 60 containing a catalyst for purifying nitrogen oxides contained in the exhaust gas is provided on the main exhaust passage 80.

Exhaust gas passing through the main exhaust flow passage 80 in front of the reactor 60 is partially branched via the branch exhaust flow passage 70 and is again connected to the main exhaust flow passage 80 in front of the reactor 60.

A blower 30, a burner device 101, a decomposition chamber 40, and an injection member 50 are provided on the branch exhaust passage 70.

The blower 30 provides motive power for moving the fluid so that a part of the exhaust gas passing through the main exhaust passage 80 is introduced through the branch exhaust passage 70. Therefore, the blower 30 can allow the exhaust gas to flow into the exhaust gas inlet 130 of the burner device 101.

The exhaust gas flowing into the exhaust gas inlet 130 of the burner device 101 passes through the first space S1 between the outer housing 100 and the inner housing 200. Therefore, the exhaust gas moves toward the one end of the outer housing 100 along the outer peripheral surface of the inner housing 200 along the first space S1.

The exhaust gas that has moved to one end of the outer housing 100 passes through the second space S2 between the porous member 300 and the inner housing and flows into the combustion chamber 210, or burns through the porous portion 330 of the porous member 300. It flows into the chamber 210.

Therefore, when the exhaust gas that has passed through the porous portion 330 has a uniform flow, it does not hinder the generation of flames in the combustion chamber 210 when being supplied to the combustion chamber 210. In addition, the exhaust gas supplied through the second space S2 is supplied toward the inner wall of the combustion chamber 210 at a high flow rate, so that the generation of flame is not hindered.

The fresh air that flows in through the fresh air inflow portion 600, the exhaust gas that passes through the second space S2 and is supplied to the combustion chamber 210, and the exhaust gas that is supplied to the combustion chamber 210 through the porous portion 330 are , And is mixed by the mixing unit 700.

Therefore, when the temperature of the exhaust gas rises in the combustion chamber 210, the mixing unit 700 can mix with the fresh air so as to effectively raise the temperature.

The exhaust gas mixed with the fresh air passing through the combustion chamber 210 is heated by the flame and is discharged to the outside of the burner device 101 through the discharge port 200.

The heated exhaust gas is supplied to the reducing agent decomposition chamber 40. In the decomposition chamber 40, urea that is supplied as the heat energy of the heated exhaust gas can be hydrolyzed.

The hydrolyzed reducing agent is injected through the injection member 50 onto the main exhaust passage 80 in front of the reactor 60.

Therefore, the exhaust gas flowing into the reactor 60 is mixed with the hydrolyzed reducing agent.

The exhaust gas passing through the reactor 60 and passing through the main exhaust passage 80 at the rear of the reactor is decomposed into exhaust gas containing nitrogen oxides into nitrogen and water or steam, and is exhausted to the outside.

With such a configuration, the burner device 101 according to the embodiment of the present invention can effectively raise the temperature of exhaust gas.

Specifically, the burner device 101 is generated in the combustion chamber 210 formed by the inner housing 200 by the outer housing 100, the inner housing 200, and the first support member 400 that supports between them. Even when the inner housing 200 is thermally deformed by the flame, the inner housing 200 can be effectively supported without affecting the outer housing 100.

In addition, the outer housing 100, the inner housing 200, and the first support member 400 that separates and supports the outer housing 100, exhaust gas along the outer peripheral surface of the inner housing 200 through the first space S1. Since it is movable, it is possible to reduce the use of a heat insulating material for maintaining the heat insulation of the combustion chamber, as compared with the conventional burner device.

Furthermore, since the exhaust gas that has passed through the porous member 300 flows into the combustion chamber 210 with uniform fluidity, it is possible to prevent the generation of flames from being hindered by the uneven flow of the fluid inside the combustion chamber 210. You can

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains have the present invention within the scope not departing from the technical idea and the gist of the invention. It will be understood that various modifications can be made.

Therefore, the above-mentioned embodiments are presented by way of illustration and not limitation. The scope of the present invention is defined by the scope of the claims, and all modifications and variations derived from the meaning and scope of the scope of the claims and the equivalent concept thereof are included in the scope of the present invention.

The burner device according to the embodiment of the present invention can be used for raising the temperature of exhaust gas.

100: Outer housing 101: Burner device 102: System including burner device,
130: Exhaust gas inlet 200: Inner housing 210: Combustion chamber 300: Porous member 310: First porous supporting part 320: Second porous supporting part 330: Porous part 331: Plural holes 400: First supporting member 410: multiple inner housing support parts 500: second support member 510: multiple porous member support parts 600: fresh air inflow part 700: mixing part

Claims (7)

A burner device including a fuel supply unit for supplying fuel to the inside and an ignition unit, for burning the supplied fuel to raise the temperature of exhaust gas,
An outer housing,
An inner housing having one end spaced apart from one end of the outer housing and disposed inside the outer housing, the other end being supported by the other end of the outer housing to form a combustion chamber;
An exhaust gas inlet formed on the outer peripheral surface of the other end of the outer housing, into which exhaust gas flows,
A porous member disposed between one end of the outer housing and one end of the inner housing;
A first support member for supporting the inner peripheral surface of the outer housing and the outer peripheral surface of the inner housing while separating them from each other;
A second support member for supporting the porous member and the inner housing in a separated manner,
The porous member is
A first porous support portion arranged to face one end of the outer housing;
A second porous support portion supported by the second support member;
A porous part formed between the first porous support part and the second porous support part;
Including,
Exhaust gas flowing into the exhaust gas inlet port,
The porous the first supporting member passes toward between said outer housing and said inner housing for supporting one end of said outer housing, through the perforated portion, and said second support member for supporting A burner device, characterized in that it is introduced into the inner housing through a member and the inner housing. The porous portion is
A porous region having an inner diameter gradually increasing from the first porous support part toward the second porous support part, wherein a plurality of holes are formed in the porous region. The burner device according to claim 1. The burner device according to claim 1, wherein a flow rate of the exhaust gas passing between the porous member and the inner housing is higher than a flow rate of the exhaust gas passing through the porous portion. The burner apparatus according to claim 1, further comprising a fresh air inflow portion that is connected to one end of the outer housing and that guides fresh air into the combustion chamber. The burner device according to claim 4, further comprising a mixing unit configured to mix fresh air flowing into the combustion chamber and exhaust gas flowing into the combustion chamber. The first support member includes a plurality of inner housing support portions radially spaced from the inner peripheral surface of the outer housing toward the outer peripheral surface of the inner housing along the longitudinal direction of the outer housing. The burner device of claim 1, comprising: The second support member includes a plurality of porous member support portions radially spaced from the outer peripheral surface of the porous member toward the inner peripheral surface of one end of the inner housing. Burner device described.

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