KR100559196B1 - Bunsen burner - Google Patents

Abstract

The Bunsen-type burner of the present invention has an inverted conical mixing tube in which the venturi tube and the venturi tube communicate with one side, and a disc shape formed on an upper surface of the fixing base mounted on the lower side of the mixing tube and extending toward the upper end of the mixing tube. Air distribution guide, and the lower end is mounted on the top of the mixing tube is opened and the upper end is closed by a hard plate and comprises a cylindrical body formed with salt holes on the outer periphery, preferably the injection pressure control plate on the inner circumferential side of the body Further, it is possible to uniformly discharge the mixed gas inside the burner through the salt hole. Uniformity of the mixed gas, that is, uniformly mixed with air without uniformly localizing gas in the mixed gas of gas and air and having a uniform mixing ratio as a whole is a major factor influencing combustion performance. The flow of gas guided by the conical mixing tube and the air distribution guide increases the mixing of the mixed gas, thereby eliminating the local gas partial pressure present in the mixed gas primarily mixed in the venturi tube, thereby uniformly mixing as a whole. Therefore, the improvement of combustion performance can be achieved. In addition, since the mixed gas inside the burner is discharged through the salt hole at a uniform pressure, flame injury and uneven heating can be prevented, and a mesh-type ejection pressure throttle blocks the propagation of the flame to prevent flame backfire. It is possible to prevent the combustion performance and stability is improved.

Bunsen burner, gas mixture

Description

Bunsen burner {BUNSEN BURNER}

1 is a cross-sectional view of a conventional bunsen burner.

2 is a cutaway perspective view of the burner of the Bunsen burner according to the present invention.

3 is a cross-sectional view of the Bunsen burner according to the present invention.

The present invention relates to a bunsen burner. In particular, the present invention relates to a Bunsen burner which can improve the mixing of the gas and air mixed gas flowing through the venturi tube, and the combustion performance can be improved by maintaining a constant discharge of the mixed gas through the salt hole .

The burner is a component of a boiler that burns fuel such as coal, oil and gas in a combustion chamber and transfers the heat of combustion to water in a heat exchanger to selectively use heated water as heating water or hot water. In order to increase the fuel consumption, fuel and air must be uniformly mixed, and the fuel-air mixing ratio must be kept constant.

Especially, in case of Bunsen type burner which naturally mixes fuel gas and air while passing through the inside of the venturi tube, there is a limit to ensure uniformity of the mixed gas only through the primary mixing made through the venturi tube. It needs a structure for keys.

1 shows a cross-sectional view of such a conventional bunsen burner.

Referring to the drawings, the venturi tube 8 is communicated to the lower one side of the cylindrical body 2 to which the upper and lower plates 4 and 6 are coupled to the upper and lower ends thereof, and the outer periphery of the cylindrical body 2 is mixed. A salt hole 3 serving as a gas discharge path is formed, and in the inner middle part, an air distribution plate 10 having a through hole 11 which partitions the inner space of the cylindrical body and becomes an upward flow passage of the mixed gas at the center thereof is formed. Is installed. The inner hard disk 12 is provided below the upper hard disk 4.

The mixed gas firstly introduced through the venturi tube 8 is secondly mixed in the lower space of the air distribution plate 10 and flows upward through the through hole of the air distribution plate and is discharged through the salt hole. At this time, the inner diameter plate 12 increases the pressure in the burner to increase the gas blowing speed.

In the conventional bunsen-type burner, the primary mixed gas introduced through the venturi tube 8 is secondly mixed in the lower portion of the air distribution plate 10, and the mixed gas introduced through the venturi tube 8 is Mixing is not smooth because it is once stagnant and dispersed in the lower space of the suddenly widened air distribution plate 8, and since the mixed gas is rapidly moved through the central hole 11 of the air distribution plate by combustion pressure, substantial mixing is not achieved. There was a problem. In addition, since the mixed gas flows upward through the through hole 11 of the air distribution plate 10 without being uniformly mixed and is discharged through the salt hole, the gas is biased in a specific direction to escape the salt hole. As a result, incomplete combustion occurs, and the flame is biased, which causes a problem of not achieving uniform heating as a whole.

The present invention devised to solve the above problems, improve the secondary performance of the mixed air introduced by mixing in the venturi tube, the Bunsen-style improved combustion performance by allowing the discharge at a uniform pressure through the salt hole It's about a burner.

The present invention for achieving the above object is formed on the upper surface of the venturi tube, the inverted conical mixing tube in which the venturi tube is communicated to one side, and is mounted on the lower side of the mixing tube and extended toward the upper end of the mixing tube. Provided is a disc-shaped burner comprising a disk-shaped air distribution guide and a cylindrical body, which is mounted on the upper end of the mixing pipe, the lower end is opened and the upper end is closed by a hard plate, and a salt hole is formed in the outer circumference. do.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The Bunsen burner according to the present invention includes a venturi tube 20, an inverted conical mixing tube 30, an air distribution guide 40, and a body 50 having a salt hole 51.

The Bunsen burner mounted on the upper part of the burner bottom plate 15 is installed such that a venturi tube 20 into which gas and combustion air are mixed is introduced by a burner bottom plate by a bracket (not shown).

The reverse cone-shaped mixing tube 30, in which the venturi tube 20 is mounted in communication, has a bolt-type fastening portion 32 to the outside of the lower end portion, and the fastening portion 32 is inserted through the formed through hole of the burner bottom plate to the lower end thereof. The nut 16 is fastened to and fixed to the burner bottom plate 15. A protrusion 34 having a fixing groove is formed at an inner lower center of the mixing tube 30.

The air distribution guide 40 is formed in a disc shape 40 on the upper surface of the fixing table 42 fixed to the fixing groove of the protrusion 34 extending upward.

The body 50 attached to the upper end of the mixing tube 30 has a lower end, and an upper end thereof is closed by the upper hard plate 52, and a salt hole 51 is formed at the outer circumference to discharge the mixed gas.

On the inner circumferential side of the body, a jet pressure control plate 60 is installed to uniformly discharge the mixed gas flowed up from the mixing tube 30 at a constant pressure through the salt hole. The ejection pressure control plate 60 is formed of a mesh member having a plurality of through holes uniformly formed therein.

Preferably, the ejection pressure control plate 60 is composed of a mesh 62 and a porous plate 64 having a plurality of through holes uniformly supporting the mesh 62. That is, the ejection pressure control plate 60 is composed of a porous plate 64 installed around the inner surface of the body 50 and a mesh 62 disposed between the porous plate 64 and the inner surface of the body. More specifically, the ejection pressure control plate 60 may be formed of only a mesh 62, but may be formed in a dual structure including a porous plate 64 supporting the mesh 62 in terms of durability. desirable.

Blowing pressure control plate 60, the mixed gas is uniformly mixed in the inner space of the mixing pipe 30 in the lower portion of the air distribution guide 40 through the space between the air distribution guide 40 and the mixing pipe 30 ( 50) When introduced into and discharged through the salt hole 51, it acts as a resistance to the mixed gas flow to be discharged through the salt hole at a uniform pressure in the internal space of the body surrounded by the ejection pressure control plate 60.

That is, when partial deflection occurs in the mixed gas flow rising from the mixing tube 30 into the body, when there is no ejection pressure control plate 60, the unbalanced mixed gas is sucked into the adjacent salt hole by the combustion pressure and is discharged. There is a risk of flame bias. However, when the ejection pressure adjusting plate 60 is installed, the ejection pressure adjusting plate 60 acts as a resistance to the flow of the mixed gas, so that the mixed gas is not immediately discharged at the same time as the rising gas, but by the ejection pressure adjusting plate 60. It is first captured in the enclosed space and then uniformly discharged at a constant pressure through the mesh ball. Therefore, it is possible to constantly discharge the mixed gas at a uniform pressure through the salt hole.

In particular, according to the embodiment of the present invention, since the ejection pressure regulating plate 60 is formed in a dual structure of the mesh 62 and the porous plate 64, the mesh 62 is separated and damaged even after prolonged use and combustion pressure. This prevents durability and improves the pressure, so that the mixed gas is trapped by the dual structure of the ejection pressure control plate 60 and discharged through the through hole and the mesh hole in the space of the body 50. It is more advantageous in terms of discharging the mixed gas at a uniform pressure toward the gas.

In the configuration of the present invention as described above, it will be described with reference to the flow of the mixed air according to the operation of the burner as follows.

Gas and air are first mixed while flowing through the venturi tube 20 is introduced into the inverted conical mixing tube (30). Since the mixing pipe 30 is formed in an inverted conical shape, the cross-sectional area gradually increases from the lower side to the upper side and has an inclined surface to the side, so that the air flowing through the venturi tube 20 rises along the inclined surface without stagnation, and the increased mixed air. Since it is circulated while colliding with the lower surface of the air distribution guide 40 again to form a downdraft, the mixing is promoted so that the balance of the entire mixed gas, that is, the ratio of gas to air is uniformly secondary mixed.

As such, the mixed gas uniformly mixed in the mixing pipe 30 is introduced into the body 50 through the outer circumferential space of the air distribution guide 40 and discharged through the salt hole through the ejection pressure control plate 60. At this time, the mixed gas inside the burner is trapped in the space surrounded by the ejection pressure adjusting plate 60 and then discharged into the salt hole 51, even if a partial bias occurs in the rising flow of the mixed gas ejection pressure adjusting plate 60. By being uniformly discharged through the salt hole 51 it is possible to prevent the occurrence of flame deflection.

In addition, even when the temperature of the burner shell increases due to the high flame temperature, the ejection pressure control plate 60, particularly the mesh 62, can block the flame from backfire, so that flame backfire can be prevented.

According to this invention comprised as mentioned above, it becomes possible to mix gas and air uniformly in mixed gas. The uniformity of the mixed gas, that is, the gas is uniformly mixed with the air without uniformly localizing the gas in the mixed gas composed of gas and air and has a uniform mixing ratio as a whole is a main factor affecting the combustion performance. According to the present invention, the mixing flow of the mixed gas is increased by the flow flow guided by the inverse conical mixing tube and the air distribution guide, so that the local gas bias existing in the mixed gas primarily mixed in the venturi tube is eliminated, and the mixture is uniformly mixed. Therefore, the improvement of combustion performance can be achieved.

In addition, since the mixed gas inside the burner is discharged through the salt hole at a uniform pressure, it is possible to prevent flame injuries and uneven heating, and the mesh-type ejection pressure throttle blocks the propagation of the flame so that the flame backfires. It is possible to prevent the combustion performance and stability is improved.

Claims (3)

Venturi Tube, An inverted conical mixing tube in which the venturi tube communicates with one side; A disk-shaped air distribution guide mounted on the lower side of the mixing tube and formed on an upper surface of the fixing base extending toward the upper end of the mixing tube; Bunsen-type burner, characterized in that it comprises a cylindrical body which is mounted on the top of the mixing tube, the bottom is open and the top is closed by a hard plate and the salt hole is formed on the outer periphery. The method of claim 1, The inner circumferential side of the burner is provided with a blowing pressure control plate made of a mesh-like member formed with a plurality of through holes uniformly so that the mixed gas rising from the mixing pipe is discharged through the salt holes through the through holes in the burner. burner. The method of claim 2. The blowing pressure control plate is made of a mesh, the bunsen type burner, characterized in that further comprising a porous plate made of a plate formed with a plurality of through holes uniformly supporting the mesh from the inside.

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