A combustion device

Abstract

The present invention belongs to the technical field of combustion furnaces, and specifically relates to a combustion device, comprising a mixing chamber and a combustion chamber, wherein the mixing chamber and the combustion chamber are connected by a plurality of air supply pipes, a gas connecting pipeline is arranged on the mixing chamber, the combustion chamber comprises a main board, a side board and a top board, a gas cavity is formed between the two main boards, the two sides of the two main boards are respectively connected to the side boards, mounting holes for mounting an ignition device are arranged on the side boards, a top board is installed on the upper end of the main board, a plurality of evenly arranged air holes are arranged on the top board, the air holes are connected to the air supply pipes, a plurality of evenly arranged gas holes are arranged on the main board, the diameter of the gas holes close to the top board is smaller than the diameter of the gas holes far from the top board, so that most of the gas can be discharged through the gas holes at the lower end, closer to the fire source, and the combustion is more complete, and the second gas hole comprises a large hole and a small hole, the diameters of the two holes are different, no collision is formed, resonance can be prevented, and noise can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of combustion furnaces, in particular to a combustion device. Background Art

[0002] Burner is a general term for devices that spray fuel and air in a certain way for mixed combustion. Burners are divided into industrial burners, burners, civil burners, and special burners according to their types and application fields. They are mostly made of corrosion-resistant and high-temperature resistant materials such as stainless steel or titanium. The function of the burner is to atomize the sample through flame combustion. The atomized test solution enters the burner, and under the action of the flame temperature and flame atmosphere, it undergoes processes such as drying, melting, evaporation, and dissociation to produce a large number of ground state atoms, as well as some excited state atoms, ions, and molecules. A well-designed burner should have high atomization efficiency, low noise, and stable flame performance to ensure high absorption sensitivity and measurement precision. Slit burners are often used to produce atomic vapor in atomic absorption spectrometry. Depending on the type of gas and combustion-supporting gas used, the length and width of the burner gap are different. Generally, the applicable gas and combustion-supporting gas are marked on the burner.

[0003] In the existing burners, since the diameters of the air outlet holes are all the same, the combustion is uneven and incomplete during ignition, and resonance is generated during combustion, resulting in loud noise. Summary of the invention

[0004] The object of the present invention is to provide a combustion device which can solve the problem of high noise during combustion by using gas holes with different diameters.

[0005] The objective of the present invention is achieved as follows: a combustion device comprises a mixing chamber and a combustion chamber, the mixing chamber and the combustion chamber are connected by a plurality of air supply pipes, a gas connecting pipeline is arranged on the mixing chamber, the combustion chamber comprises a main board, a side board and a top board, a gas cavity is formed between the two main boards, the two sides of the two main boards are respectively connected to the side boards, mounting holes for mounting an ignition device are arranged on the side boards, a top board is installed on the upper end of the main board, a plurality of evenly arranged air holes are arranged on the top board, the air holes are connected to the air supply pipes, a plurality of evenly arranged gas holes are arranged on the main board, and the diameter of the gas holes close to the top board is smaller than the diameter of the gas holes far from the top board.

[0006] Preferably, the gas hole includes a first gas hole and a second gas hole, the first gas hole is located at the upper end of the main board, the second gas hole is located at the lower end of the main board, the diameter of the first gas hole is smaller than the diameter of the second gas hole, and the second gas hole includes a large hole and a small hole.

[0007] Preferably, the lower end of the main board is inclined outward, and an opening for air outlet is formed at the lower end of the main board.

[0008] Preferably, the inclination angle of the mainboard is 30°-50°.

[0009] Preferably, ventilation plates are respectively installed on both sides of the top plate, and a plurality of air holes are opened on the ventilation plates.

[0010] Preferably, an outer cover shell is further included, the upper and lower ends of the outer cover shell are both open, the outer cover shell is sleeved on the periphery of the mixing chamber and the combustion chamber, and the ventilation plate is located between the outer cover shell and the top plate.

[0011] Preferably, the ignition device includes a main body mounting seat, the main body mounting seat is connected to an oxygen delivery pipe, an ignition pipe and a flame detection pipe are respectively installed in the main body mounting seat, one end of the ignition pipe is connected to an electronic ignition device, and an ignition needle is provided at the other end of the ignition pipe, a gas delivery pipe is provided in the main body mounting seat, a gas mixing honeycomb body is installed at the end of the gas delivery pipe, and the gas mixing honeycomb body is arranged in the oxygen delivery pipe.

[0012] Preferably, a mixing cavity is formed in the gas mixing honeycomb body, and a plurality of ventilation holes 1 are respectively provided on the end faces of both sides of the gas mixing honeycomb body, and one end of the fuel gas delivery pipe is connected to the gas mixing honeycomb body; a gas mixing plate is also provided in the oxygen delivery pipe, and the gas mixing plate is located on one side of the gas mixing honeycomb body, and a plurality of ventilation holes 2 are provided on the gas mixing plate.

[0013] Preferably, one end of the ignition pipe passes through and is connected to the gas mixing honeycomb body and the gas mixing sheet; a gas connector is provided on the main body mounting seat, the gas connector is connected to the gas delivery pipe, an oxygen inlet hole is provided on the main body mounting seat, an oxygen outlet cavity is formed in the main body mounting seat, and the oxygen outlet cavity is connected to the oxygen delivery pipe.

[0014] Preferably, an ignition joint and a flame detection joint are provided on the main body mounting seat, one end of the ignition joint is connected to the ignition needle, the other end of the ignition joint is connected to the electronic ignition device, one end of the flame detection joint is connected to the flame detection pipe, and the other end of the flame detection joint is connected to the control detection cabinet; a visual window is provided on the main body mounting seat; the ignition pipe, gas delivery pipe and flame detection pipe are arranged inside the oxygen delivery pipe.

[0015] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0016] 1. The present invention designs the gas holes so that the diameter of the gas holes near the top plate is smaller than that of the gas holes far from the top plate, so that most of the gas can be discharged through the gas holes at the lower end, which is closer to the fire source and burns more fully. The second gas hole includes a large hole and a small hole, and the diameters of the two holes are different, so they will not form a collision, which can prevent resonance and reduce noise.

[0017] 2. The present invention adopts the design of flame detection pipeline. When the gas fails to be ignited after multiple ignitions, the control detection cabinet will detect the signal through the flame detection joint and close the combustible gas delivery pipeline to prevent the flash explosion caused by re-ignition due to excessive internal combustible gas concentration, thereby improving safety.

[0018] 3. The present invention adopts the design of a gas mixing honeycomb body. When oxygen and fuel gas are transported from the outside to the inside of the ignition device, oxygen will first enter the gas mixing honeycomb body 8 through the oxygen delivery pipe, and at the same time, fuel gas will enter the gas mixing honeycomb body through the fuel gas delivery pipe, so that oxygen and fuel gas are preliminarily mixed in the gas mixing honeycomb body to facilitate subsequent ignition and reduce the probability of ignition failing to ignite the mixed gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention.

[0020] Figure 2 It is a structural diagram of the main board and top plate.

[0021] Figure 3 It is a schematic diagram of the structure of installing the outer cover shell of the present invention.

[0022] Figure 4 It is a side structural schematic diagram of the present invention.

[0023] Figure 5 This is a schematic diagram of the structure when the main mounting base is connected to the oxygen delivery tube.

[0024] Figure 6 This is a schematic diagram of the structure after the oxygen delivery tube is removed from the main mounting base.

[0025] Figure 7 The structure diagram of the main mounting base Figure 1 .

[0026] Figure 8 It is a schematic diagram of the installation structure of the gas mixing honeycomb body and the gas mixing sheet.

[0027] Fig. 9 The structure diagram of the main mounting base Figure 2 .

[0028] Figure markings: 1-mixing chamber; 2-combustion chamber; 3-air supply pipe; 4-gas connecting pipe; 5-main board; 6-side board; 7-top board; 9-mounting hole; 10-vent hole; 11-gas hole; 12-first gas hole; 13-second gas hole; 14-large hole; 15-small hole; 16-vent plate; 17-air hole; 18-outer cover shell; 21-main body mounting seat; 22-oxygen delivery pipe; 23-ignition pipe; 24-flame detection pipe; 25-gas connector; 26-ignition needle; 27-gas delivery pipe; 28-gas mixing honeycomb; 30-vent hole one; 31-gas mixing plate; 32-vent hole two; 33-oxygen inlet hole; 34-oxygen outlet cavity; 35-ignition connector; 36-flame detection connector; 37-visible window. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-9 The specific implementation modes of the present invention are described in further detail.

[0030] like Figure 1 As shown, a combustion device includes a mixing chamber 1 and a combustion chamber 2. A gas connecting pipe 4 is provided on the mixing chamber 1. In the actual combustion process, the gas first enters the mixing chamber 1 through the gas connecting pipe 4 to be mixed with oxygen for subsequent ignition and combustion. The mixing chamber 1 and the combustion chamber 2 are connected by a plurality of air supply pipes 3, and the mixed gas is sent into the combustion chamber 2 through the air supply pipe 3 for ignition.

[0031] Combination Figure 2 The combustion chamber 2 includes two main boards 5, two side boards 6 and a top board 7. A gas cavity is formed between the two main boards 5. The two sides of the two main boards 5 are respectively connected to the side boards 6. The side boards 6 are provided with mounting holes 9 for installing an ignition device. The end of the ignition device is located in the gas cavity, and the gas in the gas cavity is ignited by the ignition device. A top board 7 is installed on the upper end of the main board 5. A plurality of evenly arranged air holes 10 are provided on the top board 7. The air holes 10 are connected to the air supply pipe 3, so that the gas in the mixing chamber 1 is evenly delivered to the combustion chamber 2 through the air holes 10 for ignition. A plurality of evenly arranged gas holes 11 are provided on the main board 5. The diameter of the gas holes 11 near the top board 7 is smaller than the diameter of the gas holes 11 far from the top board 7, so that most of the gas can be discharged through the gas holes 11 at the lower end, which is closer to the fire source and burns more fully.

[0032] Combination Figure 3, and also includes an outer cover shell 18, the upper and lower ends of the outer cover shell 18 are open, the outer cover shell 18 is sleeved on the outer periphery of the mixing chamber 1 and the combustion chamber 2, and ventilation plates 16 are respectively installed on both sides of the top plate 7, and a plurality of air holes 17 are opened on the ventilation plate 16. The ventilation plate 16 is located between the outer cover shell 18 and the top plate 7. One end of the outer cover shell 18 is connected to a large gas transmission pipeline, and the large gas transmission pipeline delivers the gas between the outer cover shell and the combustion device. The gas will pass through the ventilation plate 16 and the gas hole 11 into the combustion chamber 2. The gas is first further mixed with oxygen in the process of passing through the ventilation plate 16 to achieve a more complete mixture.

[0033] Look specifically Figure 2 The gas hole 11 includes a first gas hole 12 and a second gas hole 13. The first gas hole 12 is located at the upper end of the main board 5, and the second gas hole 13 is located at the lower end of the main board 5. The diameter of the first gas hole 12 is smaller than the diameter of the second gas hole 13. The second gas hole 13 includes a large hole 14 and a small hole 15.

[0034] The mixed gas is discharged through the first gas hole 12 and the second gas hole 13 in sequence for combustion. Since the diameter of the first gas hole 12 is smaller than that of the second gas hole 13, only a small part of the gas will be discharged from the upper part to ensure sufficient combustion. The second gas hole 13 includes a large hole 14 and a small hole 15. The diameters of the two holes are different and will not form an impact, which can prevent resonance and reduce noise.

[0035] The lower end of the main board 5 is tilted outward, and the lower ends of the two main boards 5 are formed with openings for gas outlet and combustion.

[0036] The main board 5 has an inclination angle of 30°-50° so that the gas is ejected outward.

[0037] Combination Figure 5 and Figure 6 The ignition device includes a main body mounting seat 21, a gas delivery pipe 27 is arranged in the main body mounting seat 21, a gas connector 25 is provided on the main body mounting seat 21, the gas connector 25 is connected to the gas delivery pipe 27, the gas connector 25 is used to connect an external gas delivery device, the main body mounting seat 21 is connected to an oxygen delivery pipe 22, an oxygen inlet hole 33 is provided on the main body mounting seat 21, the oxygen inlet hole 33 is used to connect an external oxygen delivery device, an oxygen outlet cavity 34 is formed in the main body mounting seat 21, the oxygen outlet cavity 34 is connected to the oxygen delivery pipe 22, firstly, the gas and oxygen are sent into the ignition device together to facilitate the next step of ignition and combustion.

[0038] Combination Figure 2An ignition pipe 23 and a flame detection pipe 24 are respectively installed in the main body mounting seat 21. One end of the ignition pipe 23 is connected to an electronic ignition device, and the other end of the ignition pipe 23 is provided with an ignition needle 26. The electronic ignition device is used to make the ignition needle generate an electric spark, thereby igniting the gas and smoke mixed gas. A gas mixing honeycomb 28 is installed at the end of the gas delivery pipe 27. The gas mixing honeycomb 28 is arranged in the oxygen delivery pipe 22. When oxygen and gas are transported from the outside to the inside of the ignition device, oxygen first enters the gas through the oxygen delivery pipe 22. In the mixing honeycomb body 28, the fuel gas will enter the gas mixing honeycomb body 28 through the fuel gas delivery pipe 27, so that the oxygen and fuel gas are preliminarily mixed in the gas mixing honeycomb body 28 to facilitate subsequent ignition and reduce the probability of ignition failing to ignite the mixed gas. A flame detection sensor is arranged in the flame detection pipe 24. The flame detection sensor is used to detect whether the fuel gas in the boiler is ignited when the electronic ignition device is working. If the gas is still not ignited within the set number of ignitions, the fuel gas will stop being delivered to prevent flash explosion and improve safety.

[0039] A mixing cavity is formed in the gas mixing honeycomb body 28, and the gas outlets of the gas delivery pipe 27 and the oxygen delivery pipe 22 are respectively connected to the mixing cavity. A plurality of air vents 30 are respectively provided on the end faces of both sides of the gas mixing honeycomb body 28. The design of the plurality of air vents 30 can improve the mixing effect and make the gas mixing more uniform, thereby improving its combustion efficiency. One end of the gas delivery pipe 27 is connected to the gas mixing honeycomb body 28.

[0040] A gas mixing plate 31 is also provided in the oxygen delivery pipe 22. The gas mixing plate 31 is located on one side of the gas mixing honeycomb body 28. A plurality of ventilation holes 32 are provided on the gas mixing plate 31. Through the design of the gas mixing plate 31, the fuel gas and oxygen will be further mixed when passing through the ventilation holes 32, thereby improving the completeness of their combustion.

[0041] One end of the ignition pipe 23 passes through and is connected to the gas mixing honeycomb 28 and the gas mixing sheet 31. The connection structure is simple and easy to produce.

[0042] An ignition connector 35 and a flame detection connector 36 are provided on the main body mounting base 21. One end of the ignition connector 35 is connected to the ignition needle 26, and the other end of the ignition connector 35 is connected to an electronic ignition device. The electronic ignition device is a prior art and is used to make the ignition needle 26 generate sparks, thereby igniting the combustible gas. Therefore, its structure is not described in detail in this article. One end of the flame detection connector 36 is connected to the flame detection pipe 24, and the other end of the flame detection connector 36 is connected to the control detection cabinet. When the gas is not ignited after multiple ignitions, the control detection cabinet will detect the signal through the flame detection connector 36 and close the combustible gas delivery pipeline to prevent flash explosion caused by re-ignition after the internal combustible gas concentration is too high, thereby improving safety.

[0043] The main body mounting seat 21 is provided with a visual window 37 , through which the internal conditions of the ignition device can be observed, making observation convenient.

[0044] The ignition pipe 23, the fuel gas delivery pipe 27, and the flame detection pipe 24 are arranged inside the oxygen delivery pipe 22, which can protect the structure and reduce the occupied space.

[0045] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A combustion device, characterized in that: The invention comprises a mixing chamber (1) and a combustion chamber (2), wherein the mixing chamber (1) and the combustion chamber (2) are connected via a plurality of air supply pipes (3), a gas connection pipe (4) is arranged on the mixing chamber (1), the combustion chamber (2) comprises a main plate (5), a side plate (6) and a top plate (7), a gas cavity is formed between the two main plates (5), the two sides of the two main plates (5) are respectively connected to the side plates (6), the side plates (6) are provided with mounting holes (9) for mounting an ignition device, the top plate (7) is installed at the upper end of the main plate (5), the top plate (7) is provided with a plurality of evenly arranged vent holes (10), the vent holes (10) are connected to the air supply pipe (3), the main plate (5) is provided with a plurality of evenly arranged gas holes (11), and a gas hole (11) near the top plate (7) is provided with a gas hole (12) arranged in a plurality of rows. The diameter of the gas hole (11) is smaller than the diameter of the gas hole (11) at a position away from the top plate (7); the ignition device comprises a main body mounting seat (21), the main body mounting seat (21) is connected to an oxygen delivery pipe (22), an ignition pipe (23) and a flame detection pipe (24) are respectively installed in the main body mounting seat (21), one end of the ignition pipe (23) is connected to an electronic ignition device, and the other end of the ignition pipe (23) is provided with an ignition needle (26); a gas delivery pipe (27) is arranged in the main body mounting seat (21), a gas mixing honeycomb (28) is installed at the end of the gas delivery pipe (27), and the gas mixing honeycomb (28) is arranged in the oxygen delivery pipe (22); a mixing cavity is formed in the gas mixing honeycomb (28), and the gas mixing honeycomb (28) is provided in the oxygen delivery pipe (22); A plurality of ventilation holes (30) are respectively provided on the end surfaces of both sides of the gas mixing honeycomb body (28); one end of the gas delivery pipe (27) is connected to the gas mixing honeycomb body (28); a gas mixing plate (31) is also provided in the oxygen delivery pipe (22); the gas mixing plate (31) is located on one side of the gas mixing honeycomb body (28); a plurality of ventilation holes (32) are provided on the gas mixing plate (31); one end of the ignition pipe (23) passes through and is connected to the gas mixing honeycomb body (28) and the gas mixing plate (31); a gas connector (25) is provided on the main body mounting seat (21); the gas connector (25) is connected to the gas delivery pipe (27); an oxygen inlet hole (33) is provided on the main body mounting seat (21) An oxygen outlet cavity (34) is formed inside the main body mounting seat (21), and the oxygen outlet cavity (34) is connected to the oxygen delivery pipe (22); an ignition joint (35) and a flame detection joint (36) are arranged on the main body mounting seat (21), one end of the ignition joint (35) is connected to the ignition needle (26), the other end of the ignition joint (35) is connected to the electronic ignition device, one end of the flame detection joint (36) is connected to the flame detection pipe (24), and the other end of the flame detection joint (36) is connected to the control detection cabinet; a visual window (37) is arranged on the main body mounting seat (21); the ignition pipe (23), the gas delivery pipe (27), and the flame detection pipe (24) are arranged inside the oxygen delivery pipe (22).

2. The combustion device according to claim 1, characterized in that: The gas hole (11) comprises a first gas hole (12) and a second gas hole (13); the first gas hole (12) is located at the upper end of the main board (5); the second gas hole (13) is located at the lower end of the main board (5); the diameter of the first gas hole (12) is smaller than the diameter of the second gas hole (13); the second gas hole (13) comprises a large hole (14) and a small hole (15).

3. The combustion device according to claim 1, characterized in that: The lower end of the main board (5) is arranged to be inclined outward, and an opening for air outlet is formed at the lower end of the main board (5).

4. The combustion device according to claim 1, characterized in that: The inclination angle of the main board (5) is 30°-50°.

5. The combustion device according to claim 1, characterized in that: Ventilation plates (16) are respectively installed on both sides of the top plate (7), and a plurality of air holes (17) are opened on the ventilating plates (16).

6. The combustion device according to claim 1, characterized in that: It also includes an outer cover shell (18), the upper and lower ends of which are both open, the outer cover shell (18) is sleeved on the outer periphery of the mixing chamber (1) and the combustion chamber (2), and the ventilation plate (16) is located between the outer cover shell (18) and the top plate (7).

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