Combustion head structure of natural gas combustor

Abstract

The utility model provides a combustion head structure of a natural gas combustor, and belongs to the technical field of machinery. The problem that in the prior art, the flow guide efficiency of a combustion head of a combustor is not high enough is solved. The gas stove comprises a combustion cylinder and a protection cylinder, a combustion guide cylinder is fixed in the combustion cylinder, one end of the combustion guide cylinder is a connecting cylinder, the other end of the combustion guide cylinder is a fan-shaped cylinder, a plurality of first vent holes are formed in the surface of the fan-shaped cylinder, and the first vent holes are evenly distributed in a central symmetry mode; an air outlet pipe is fixed in the air outlet cylinder and extends out of the air outlet cylinder and the combustion guide cylinder, the air outlet cylinder is sleeved with a fixing ring, the fixing ring is fixedly connected with an ignition cylinder, an ignition pipe is connected into the ignition cylinder, and the front end of the ignition pipe extends into the first vent hole. The utility model has the advantages of good diversion effect, high structural strength and long service life.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a combustion head structure of a natural gas burner. Background Art

[0002] The natural gas burner is one of the main natural gas combustion equipment. According to its working principle, the burner can be defined as a device that converts substances into heat energy through the chemical reaction of combustion - that is, air and fuel are mixed in appropriate proportions through a premixing device to make them fully burn.

[0003] A Chinese patent with publication number CN207407340U discloses a low-nitrogen burner, including an axially through-burning cylinder, a gas pipe fixedly connected in the combustion cylinder, an air pipe fixedly connected in the gas pipe, a cavity of the air pipe isolated from the cavity of the gas pipe, and a lower end of the air pipe connected to the lower end of the combustion cylinder, characterized in that a combustion plate is fixedly connected to the upper end of the gas pipe, the combustion plate is evenly provided with through-flow holes, a plurality of horizontally arranged jet pipes are fixedly connected to the combustion plate, the inner end of the jet pipe is connected to the gas pipe, the outer end of the gas pipe is connected to the combustion cylinder, an impeller is provided on the inner side of the lower end of the gas pipe, the impeller includes a plurality of inclined blades, the combustion plate is disc-shaped, the jet pipes are evenly arranged with the axis of the combustion plate as the center, and the outer end of the jet pipe is close to the edge of the combustion plate.

[0004] The patent provides a low-nitrogen burner in which a combustion plate is placed in a combustion tube. However, due to the flat shape of the combustion plate, its mixing effect on air and natural gas is limited during use. Utility Model Content

[0005] The purpose of the utility model is to provide a combustion head structure of a natural gas burner in view of the above problems existing in the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a combustion head structure of a natural gas burner, comprising a combustion tube and a protective tube, the combustion tube and the protective tube are fixedly connected, a combustion guide tube is fixed inside the combustion tube, one end of the combustion guide tube is a connecting tube, and the other end of the combustion guide tube is a fan-shaped tube, a plurality of first air holes are opened on the surface of the fan-shaped tube, and the first air holes are evenly distributed in a centrally symmetrical manner, an air outlet tube is connected to the connecting tube, an air outlet pipe is fixed inside the air outlet tube, the air outlet pipe extends out of the air outlet tube and the combustion guide tube, a fixing ring is sleeved on the air outlet tube, an ignition tube is fixedly connected to the fixing ring, an ignition tube is connected inside the ignition tube, the front end of the ignition tube is bent at 90°, and the front end of the ignition tube extends into the first air hole.

[0007] In the above-mentioned combustion head structure of a natural gas burner, a sealing member is sealed and fixed at the connection between the gas outlet pipe and the combustion guide tube.

[0008] In the above-mentioned combustion head structure of a natural gas burner, a curved air outlet pipe is connected through the front end of the air outlet tube.

[0009] In the above-mentioned combustion head structure of a natural gas burner, a mounting groove is formed on the front side of the fan-shaped cylinder, a combustion guide ring is fixedly installed in the mounting groove, and a plurality of small air holes are opened on the combustion guide ring, and the small air holes are evenly arranged in a circular shape.

[0010] In the above-mentioned combustion head structure of a natural gas burner, a combustion guide plate is integrally formed at the connection between the connecting tube and the fan-shaped tube, and a second vent hole is formed on the combustion guide plate.

[0011] Compared with the prior art, the combustion head structure of a natural gas burner provided by the utility model has the following beneficial effects: 1. Through the structural design of the connecting tube and the fan-shaped tube of the combustion guide tube, a number of evenly distributed through holes are opened on the fan-shaped tube, and the structure has better flow-guiding performance; 2. By arranging a fixing ring on the air outlet tube, fixing the ignition tube on the fixing ring, and the front end of the ignition tube extends into the through hole at 90°, the structure makes the distance between the ignition tube and the combustion guide tube close, and has better ignition sensitivity during ignition. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the structure of the utility model after the combustion tube and the protection tube are removed;

[0014] Figure 3 This is a schematic diagram of the structure of the utility model from another angle after the combustion tube and the protection tube are removed;

[0015] Figure 4 It is a schematic diagram of the combustion guide tube structure.

[0016] In the figure: 1. combustion tube; 2. protection tube; 3. combustion guide tube; 31. connecting tube; 32. fan-shaped tube; 33. first air vent; 34. mounting groove; 35. combustion guide plate; 36. second air vent; 4. air outlet tube; 41. air outlet pipe; 42. fixing ring; 43. curved air outlet pipe; 5. ignition tube; 51. ignition pipe; 6. sealing element; 7. combustion guide ring; 71. small air vent. DETAILED DESCRIPTION

[0017] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0018] like Figures 1 to 4 As shown, this embodiment includes a combustion tube 1, a protection tube 2 and a combustion guide tube 3 installed in the combustion tube, the combustion tube 1 and the protection tube 2 are fixedly connected, the combustion guide tube 3 is fixed inside the combustion tube 1, one end of the combustion guide tube 3 is a connecting tube 31 and the other end of the combustion guide tube 3 is a fan-shaped tube 32, the fan-shaped tube 32 has high structural strength and good guiding performance, the first ventilation holes 33 are evenly distributed on the surface of the fan-shaped tube 32 in a centrally symmetrical manner and the first ventilation holes 33 are circular through-shaped, a combustion guide plate 35 is integrally formed at the connection between the connecting tube 31 and the fan-shaped tube 32, and a second ventilation hole 36 is opened on the combustion guide plate 35, the connecting tube 31 is connected to the air outlet tube 4, and an air outlet pipe 4 is fixed inside the air outlet tube 4 1, the other end of the air outlet tube 4 and the air outlet pipe 41 are connected to the air outlet mechanism of the burner, one end of the air outlet pipe 41 extends out of the air outlet tube 4 and the combustion guide tube 3, the connection between the air outlet tube 41 and the combustion guide tube 3 is sealed and fixed with a sealing member 6, a fixing ring 42 is sleeved on the air outlet tube 41, an ignition tube 5 is fixedly connected to the fixing ring 42, an ignition tube 51 is connected to the inside of the ignition tube 5 and the ignition tube 51 is connected to the ignition mechanism of the burner, the front end of the ignition tube 51 is bent at 90 degrees and the front end of the ignition tube 51 extends into the first vent hole 33, when the air outlet tube 41 sprays the natural gas and air mixture during use, the front end of the ignition tube 51 is close to the combustion guide tube 3, and can sensitively ignite the mixture to achieve a combustion effect.

[0019] To elaborate further, Figures 1 to 4 As shown, a curved air outlet pipe 43 is connected through the front end of the air outlet cylinder 4, and a mounting groove 34 is formed on the front side of the fan-shaped cylinder 32. A combustion guide ring 7 is fixedly installed in the mounting groove 34. A plurality of small air vents 71 are provided on the combustion guide ring 7, and the small air vents 71 are evenly arranged in a circular shape. There are four curved air outlet pipes 43 and they are evenly distributed on the outside of the air outlet cylinder 4. The natural gas and air mixture discharged from the curved air outlet pipes 43 is discharged through the small air vents 71 on the combustion guide ring 7.

[0020] The working principle of the utility model is as follows: the gas outlet mechanism of the burner discharges the gas to one side of the combustion head through the gas outlet tube 4, and the gas outlet pipe 41 transports the mixture of natural gas and air to the combustion guide tube 3. Due to the structural setting of the fan-shaped tube 32 and the ignition tube 51 having a 90° bend at the front side extending into the first vent hole 33, the ignition tube 51 ignites the mixture of natural gas and air, and the curved gas outlet pipe 43 discharges the mixture of natural gas and air through the small vent holes 71 on the combustion guide ring 7. This structure enables the present embodiment to have better ventilation performance.

[0021] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0022] Although various terms are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A combustion head structure of a natural gas burner, comprising a combustion tube (1) and a protective tube (2), wherein the combustion tube (1) and the protective tube (2) are fixedly connected to each other, and characterized in that: A combustion guide tube (3) is fixed inside the combustion tube (1), one end of the combustion guide tube (3) is a connecting tube (31), and the other end of the combustion guide tube (3) is a fan-shaped tube (32). A plurality of first ventilation holes (33) are provided on the surface of the fan-shaped tube (32), and the first ventilation holes (33) are evenly distributed in a centrally symmetrical manner. An air outlet tube (4) is connected to the connecting tube (31), and an air outlet pipe (41) is fixed inside the air outlet tube (4), and the air outlet pipe (41) extends out of the air outlet tube (4) and the combustion guide tube (3). A fixing ring (42) is sleeved on the air outlet tube (4), and an ignition tube (5) is fixedly connected to the fixing ring (42). An ignition tube (5) is connected inside the ignition tube (5), and an ignition tube (51) is connected inside the ignition tube (5). The front end of the ignition tube (51) is bent at 90 degrees, and the front end of the ignition tube (51) extends into the first ventilation hole (33).

2. The combustion head structure of a natural gas burner according to claim 1, characterized in that: A sealing member (6) is sealed and fixed at the connection between the air outlet pipe (41) and the combustion guide tube (3).

3. The combustion head structure of a natural gas burner according to claim 1, characterized in that: A curved air outlet pipe (43) is connected through the front end of the air outlet cylinder (4).

4. The combustion head structure of a natural gas burner according to claim 1, characterized in that: A mounting groove (34) is formed on the front side of the sector-shaped cylinder (32), a combustion guide ring (7) is fixedly mounted in the mounting groove (34), a plurality of small ventilation holes (71) are formed on the combustion guide ring (7), and the small ventilation holes (71) are evenly arranged in a circular shape.

5. The combustion head structure of a natural gas burner according to claim 1, characterized in that: A combustion guide plate (35) is integrally formed at the connection point between the connecting cylinder (31) and the sector-shaped cylinder (32), and a second ventilation hole (36) is provided on the combustion guide plate (35).

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