Combustor with high combustion efficiency

Abstract

The utility model relates to the technical field of combustors. The utility model relates to a burner with high burning efficiency. The burner comprises a gas source connecting assembly, a gas distributing assembly and a burning cover provided with a through hole, the combustion cover comprises an outer combustion cover which is annular when being overlooked; the gas distribution assembly is provided with an outer combustion cavity, and the outer combustion cover covers a top end opening of the outer combustion cavity. Outlets of the outer injection pipes are horizontally arranged and respectively point to the drainage inlet, and the outlets of the outer injection pipes are completely positioned in the drainage inlet when viewed from the direction from which the outlets of the outer injection pipes point to the drainage inlet; a gap is formed between the outlet of the outer injection pipe and the drainage inlet; the outer drainage pipe comprises a linear section, the drainage inlet is formed in one end of the linear section, and the linear section is arranged in the direction from the outlet of the outer injection pipe to the drainage inlet; the outer drainage tube comprises a rotary drainage wall which is an arc line when overlooked and is only located on the inner side of the linear section. According to the utility model, more air can enter the outer combustion cavity along with the fuel gas, so that the combustion efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of burner technology, and in particular to a high-efficiency burner. Background Technology

[0002] CN222616903U discloses a high-heat-dissipation stove burner, including a power supply bracket and a peripheral burner assembly. The power supply bracket is equipped with a horizontally positioned outer ring gas nozzle and a horizontally positioned inner ring gas nozzle. The peripheral burner assembly includes a gas guide shroud and a burner cap. The gas guide shroud is provided with an outer ring gas path and an inner ring gas path. The outer ring gas path includes an outer ring gas inlet, an outer ring groove, and an outer ring gas outlet connected in sequence. The inner ring gas path includes an inner ring gas inlet, an inner ring groove, and an inner ring gas outlet connected in sequence. The inner ring groove is located within the outer ring groove. The burner cap surrounds the outer ring gas outlet and the inner ring gas outlet, respectively. The outer ring gas nozzle and the inner ring gas nozzle are directly opposite the outer ring gas inlet and the inner ring gas inlet, respectively. The gas guide shroud includes heat dissipation fins evenly arranged around the outer ring groove, with all fins located outside the outer ring groove. The high-heat-dissipation stove burner disclosed in CN222616903U can prevent the gas guide shroud from overheating and burning glass plates or other installed objects; it can also improve the service life of the gas guide shroud to a certain extent.

[0003] The high heat dissipation stove burner disclosed in CN222616903U has a large loss of gas velocity when the gas flows from the outer ring inlet to the ring fan mouth, and there is room for further improvement in the combustion efficiency of the gas in the outer ring groove. Utility Model Content

[0004] One objective of this invention is to solve or alleviate the aforementioned technical problems.

[0005] The present invention employs a high-efficiency burner, comprising a gas source connection assembly, a gas distribution assembly, and a combustion cover with a through hole; the combustion cover includes an outer combustion cover that is circular when viewed from above; the gas distribution assembly is provided with an outer combustion chamber, and the outer combustion cover covers the top opening of the outer combustion chamber; the gas source connection assembly is provided with an outer ejector tube, which includes an outer gas source connection part; an outer drainage pipe is provided at the bottom of the gas distribution assembly, with a drainage inlet and a drainage outlet at its two ends; the drainage outlets are respectively connected to the outer combustion chamber; the outlets of the outer ejector tubes are horizontally positioned and point towards the drainage inlets, and when viewed along the direction from the outlet of the outer ejector tube to the drainage inlet, the outlet of the outer ejector tube is completely located within the drainage inlet; a gap is provided between the outlet of the outer ejector tube and the drainage inlet; the outer drainage pipe includes a straight section, with the drainage inlet located at one end of the straight section, and the straight section is positioned along the direction from the outlet of the outer ejector tube to the drainage inlet; the outer drainage pipe includes a rotating drainage wall that is an arc when viewed from above and is located only inside the straight section.

[0006] The effect achieved by this invention is that it allows more air to enter the external combustion chamber along with the combustion gas, thereby improving combustion efficiency.

[0007] A further technical solution includes an external drainage tube comprising an upward drainage wall, the height of which gradually increases from bottom to top until it connects with the drainage outlet.

[0008] This technical solution can further improve combustion efficiency.

[0009] A further technical solution involves rotating the drainage wall so that it is tangent to the outer wall of the straight section.

[0010] This technical solution can further reduce pressure loss and improve combustion efficiency.

[0011] In a further technical solution, there are multiple external ejector tubes and external drainage tubes of equal quantity, and the external ejector tubes are rotationally symmetrical about the axis of the external combustion chamber.

[0012] This technical solution can further increase the amount of air entering the external combustion chamber along with the combustion gas, thereby improving combustion efficiency.

[0013] A further technical solution involves having a rotary positioning post in one of the external ejector tubes and the gas distribution assembly, and a rotary positioning hole in the other, with the rotary positioning post embedded in the rotary positioning hole.

[0014] This technical solution ensures that the rotational position of the gas distribution component relative to the gas source connection component is such that the external ejector tubes are directly opposite the flow inlet.

[0015] A further technical solution includes an inner combustion cover, and the gas distribution assembly is provided with an inner combustion chamber located inside the outer combustion chamber. The inner combustion cover covers the top opening of the inner combustion chamber. The gas source connection assembly is provided with an inner injection pipe, which includes an inner gas source connection part. The inner injection pipe is located inside the outer ejector pipe and its outlet is vertically upward. The outlet of the inner injection pipe is connected to the bottom end of the inner combustion chamber.

[0016] A further technical solution includes a pressure boosting and diversion shroud for the gas source connection assembly. The outer surface of the pressure boosting and diversion shroud is a downward-facing cone shape and is fixed inside the inner injection pipe and coaxial with the inner injection pipe.

[0017] This technical solution can increase the pressure entering the internal combustion chamber, thereby improving the combustion efficiency of the internal combustion cover, and can also achieve dust prevention.

[0018] In a further technical solution, the gas source connection component is placed on the gas distribution component, the outer ejector tube extends to form an extension arm, and the other end of the extension arm is fixedly connected to the inner injection tube.

[0019] In this technical solution, the gas source connection component is an integrated structure, which facilitates the installation of the gas source connection component.

[0020] A further technical solution involves setting the internal air source connection part at an angle relative to the vertical direction.

[0021] Further technical solutions include an installation plate with positioning holes; the gas source connection assembly is provided with an installation plate positioning platform for embedding the installation plate, and the installation plate is placed on the gas source connection assembly. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of the high-efficiency burner of the first embodiment. Figure 1 .

[0023] Figure 2 This is a three-dimensional schematic diagram of the high-efficiency burner of the first embodiment. Figure 2 .

[0024] Figure 3 This is a three-dimensional exploded view of the high-efficiency burner of the first embodiment. Figure 1 .

[0025] Figure 4 This is a three-dimensional exploded view of the high-efficiency burner of the first embodiment. Figure 2 .

[0026] Figure 5 This is a top view schematic diagram of the high-efficiency burner of the first embodiment.

[0027] Figure 6 This is a schematic diagram of section SEC1; arrow ARR1 indicates the approximate direction and path of the gas ejected from the external ejector tube 12.

[0028] Figure 7 This is a schematic diagram of section 2 SEC2; the thick dashed line represents the reference line used to highlight the drainage outlet 232.

[0029] Figure 8 This is a schematic diagram of section 3 SEC3.

[0030] Figure 9 This is a schematic diagram of section 4 SEC4; arrow 1 ARR1 indicates the approximate direction and path of the gas ejected from the external ejector tube 12.

[0031] Figure 10 This is a schematic diagram of section 5, SEC5.

[0032] Figure 11 This is a side view schematic diagram of the high-efficiency burner of the second embodiment.

[0033] Figure 12 This is a side view schematic diagram of the high-efficiency burner of the third embodiment.

[0034] The accompanying drawings in the specification that best illustrate the technical features of this utility model are: Figure 3 .

[0035] Arrow 1 ARR1; Section 1 SEC1; Section 2 SEC2; Section 3 SEC3; Section 4 SEC4; Section 5 SEC5; Gas source connection assembly 1; Inner injection pipe 11; Outer injection pipe 12; Extension arm 129; Pressure booster splitter shroud 13; Rotary positioning column 14; Rotary positioning hole 141; Rotary confirmation port 142; Inner gas source connection part 18; Connection part mounting bracket 181; Outer gas source connection part 19; Gas distribution assembly 2; Inner combustion chamber 21; Outer combustion chamber 22; Outer drainage pipe 23; Drainage inlet 231; Drainage outlet 232; Rotary drainage wall 233; Upward drainage wall 234; Straight section 235; Combustion cover 8; Inner combustion cover 81; Outer combustion cover 82; Mounting plate 9; Mounting plate positioning platform 91; Mounting plate positioning hole 92. Detailed Implementation

[0036] The specific embodiments of this utility model will now be described with reference to the accompanying drawings.

[0037] As a specific embodiment, the high-efficiency burner of the first embodiment includes a gas source connection assembly 1, a gas distribution assembly 2, and a combustion cover 8 with a through hole (not shown in the figure).

[0038] The combustion cover 8 includes an outer combustion cover 82 that is annular when viewed from above. It is easy to understand that both the outer combustion cover 82 and the inner combustion cover 81 (described later) have through holes (not shown in the attached diagram). It is also easy to understand that the outer combustion chamber 22 is annular.

[0039] The gas distribution assembly 2 is provided with an external combustion chamber 22, and an external combustion cover 82 covers the top opening of the external combustion chamber 22.

[0040] The gas source connection assembly 1 is provided with an external ejector tube 12, which includes an external gas source connection part 19.

[0041] The bottom of the gas distribution assembly 2 is provided with an external drainage pipe 23, the two ends of which are a drainage inlet 231 and a drainage outlet 232, respectively; the drainage outlet 232 (e.g. Figure 10 As shown, the drain outlet 232 (which is roughly annular fan-shaped) is connected to the outer combustion chamber 22.

[0042] The outlets of the external ejector tubes 12 are horizontally positioned and point towards the drainage inlet 231. When viewed along the direction from the outlet of the external ejector tube 12 to the drainage inlet 231, the outlet of the external ejector tube 12 is completely located within the drainage inlet 231. For example, both the outlet of the external ejector tube 12 and the drainage inlet 231 have circular cross-sections and are concentric. The diameter of the outlet of the external ejector tube 12 is smaller than the diameter of the drainage inlet 231. A gap is provided between the outlet of the external ejector tube 12 and the drainage inlet 231. It is easy to understand that the number of external ejector tubes 12 and external drainage tubes 23 are equal and correspond one-to-one.

[0043] like Figure 9As shown, the external drainage tube 23 includes a straight section 235, and a drainage inlet 231 is located at one end of the straight section 235. The straight section 235 is arranged in the direction from the outlet of the external ejection tube 12 to the drainage inlet 231 (as shown in ARR1). The external drainage tube 23 includes a rotating drainage wall 233 that is an arc when viewed from above and is located only inside the straight section 235.

[0044] The combustion cap 8 also includes an inner combustion cap 81. The gas distribution assembly 2 has an inner combustion chamber 21 located inside the outer combustion chamber 22. The inner combustion cap 81 covers the top opening of the inner combustion chamber 21. Typically, the inner combustion cap 81 is placed on the gas distribution assembly 2 such that it covers the top opening of the inner combustion chamber 21. The outer combustion cap 82 is also placed on the gas distribution assembly 2. The gas source connection assembly 1 is provided with an inner injection pipe 11, which includes an inner gas source connection portion 18. The inner injection pipe 11 is located inside the outer ejector pipe 12 and its outlet is vertically upward. The outlet of the inner injection pipe 11 communicates with the bottom end of the inner combustion chamber 21. The bottom end of the inner gas source connection portion 18 is typically provided with a connection portion mounting bracket 181 to facilitate connection to a gas source.

[0045] The working principle is as follows: before use, both the internal gas source connection part 18 and the external gas source connection part 19 are connected to the gas source (not shown in the attached figure, such as a gas pipeline or gas tank, which can output gas at a certain pressure).

[0046] For the inner combustion cap 81, the inner combustion chamber 21 and the inner injection pipe 11, the gas output from the inner injection pipe 11 passes through the inner combustion chamber 21 and is output from the inner combustion cap 81, and then comes into contact with the outside air (mainly oxygen in the air) and can be burned (usually requiring an electric spark to start combustion).

[0047] The gas entering the external ejector tube 12 from the external gas source connection 19 is ejected from the outlet of the external ejector tube 12 and directed to the inlet 231. At the same time, air enters the inlet 231 along with the gas from the gap between the outlet of the external ejector tube 12 and the inlet 231, and together they enter the external combustion chamber 22 from the outlet 232 and are then output from the external combustion cover 82, thus achieving complete combustion.

[0048] After the air enters the inlet 231 along with the combustion gas through the gap between the outlet of the external ejector tube 12 and the inlet 231, it can maintain a high flow velocity in the straight section 235. After being guided by the rotating inlet wall 233, it only loses a small amount of pressure and maintains a high flow velocity, thereby enabling more air to enter the external combustion chamber 22 along with the combustion gas, which in turn improves the combustion efficiency.

[0049] As one specific implementation, the external drainage pipe 23 includes an upward drainage wall 234, the height of which gradually rises from bottom to top until it connects with the drainage outlet 232. The combustion gas and air, guided by the rotating drainage wall 233 within the upward drainage wall 234, experience only a small pressure loss while maintaining a high flow rate, further improving combustion efficiency.

[0050] As one specific implementation method, the rotating guide wall 233 is tangent to the outer wall of the straight segment 235. This can further reduce pressure loss and improve combustion efficiency.

[0051] As one specific implementation method, there are multiple external ejector tubes 12 and external drain tubes 23, and the number of external ejector tubes 12 is equal. The external ejector tubes 12 are rotationally symmetrical about the axis of the external combustion chamber 22 (that is, after one external ejector tube 12 is rotated, it can coincide with another external ejector tube 12). This can further allow more air to enter the external combustion chamber 22 along with the combustion gas, thereby improving combustion efficiency.

[0052] As one specific implementation, one of the external ejector tube 12 and the gas distribution assembly 2 is provided with a rotating positioning post 14, and the other is provided with a rotating positioning hole 141, with the rotating positioning post 14 embedded in the rotating positioning hole 141. This ensures that the rotational position of the gas distribution assembly 2 relative to the gas source connection assembly 1 is such that the external ejector tube 12 is directly facing the flow inlet 231. Typically, the gas distribution assembly 2 is provided with a rotation confirmation port 142 to facilitate observation of the position of the external ejector tube 12.

[0053] As one specific implementation, the gas source connection assembly 1 also includes a pressure boosting and diversion shroud 13. The outer surface of the pressure boosting and diversion shroud 13 is a downward-pointing cone (i.e., the cone tip points downward) and is fixed inside the inner injection pipe 11 and coaxial with the inner injection pipe 11. When the gas passes through the pressure boosting and diversion shroud 13, it is diverted into an annular shape by the pressure boosting and diversion shroud 13 and the inner wall of the inner injection pipe 11, which can increase the pressure entering the inner combustion chamber 21 and thus improve the combustion efficiency in the inner combustion cover 81, and also achieve dust prevention.

[0054] As one specific implementation, the air source connection assembly 1 is placed on the air distribution assembly 2, and the outer ejector tube 12 extends to form an extension arm 129, the other end of which is fixedly connected to the inner injection tube 11. The air source connection assembly 1 is an integral structure, which facilitates its installation.

[0055] As one specific implementation method, it also includes a mounting plate 9 with a mounting plate positioning hole 92; the air source connection component 1 is provided with a mounting plate positioning platform 91 for embedding the mounting plate 9, and the mounting plate 9 is placed on the air source connection component 1.

[0056] The high-efficiency burners of the second and third embodiments differ from those of the first embodiment in the angle of the internal gas source connection portion 18 relative to the horizontal plane. In the first embodiment, the internal gas source connection portion 18 is approximately perpendicular to the horizontal plane. In the second embodiment, the bottom end of the internal gas source connection portion 18 is curved, forming an acute angle with the horizontal plane. In the third embodiment, the entire internal gas source connection portion 18 is curved, forming an acute angle with the horizontal plane. It is easy to understand that the angle of the internal gas source connection portion 18 relative to the horizontal plane can be arbitrarily set according to installation needs; in other words, the internal gas source connection portion 18 is inclined relative to the vertical direction.

[0057] The terms used in this invention, such as "first," "second," etc., do not indicate any order, quantity, or importance, but are merely for distinction.

[0058] In this invention, terms such as "a" or "an" are used to indicate not a limitation on the quantity, but rather to indicate the existence of at least one of the mentioned objects.

[0059] In this utility model, terms indicating direction or location such as top, bottom, side, longitudinal, transverse, middle, center, outside, inside, horizontal, vertical, left, right, above, and below are used to indicate relative positions rather than absolute positions.

[0060] Terms used in this invention, such as "approximately," "generally," "approximately," and "similar," are limiting terms used to indicate features that are present but allow for certain deviations. The amount of deviation allowed may vary depending on the specific context; for example, regarding dimensional deviations, the specific context may include, but is not limited to, relevant standards for dimensional tolerances.

Claims

1. A high-efficiency burner, comprising a gas source connection assembly (1), a gas distribution assembly (2), and a combustion cover (8) with a through hole; the combustion cover (8) includes an outer combustion cover (82) that is annular when viewed from above; the gas distribution assembly (2) is provided with an outer combustion chamber (22), and the outer combustion cover (82) covers the top opening of the outer combustion chamber (22); the gas source connection assembly (1) is provided with an outer ejector pipe (12), the outer ejector pipe (12) includes an outer gas source connection part (19); the bottom end of the gas distribution assembly (2) is provided with an outer drain pipe (23), the two ends of the outer drain pipe (23) are respectively a drain inlet (231) and a drain outlet (232); the drain outlet (232) is connected to the outer combustion chamber (22); characterized in that The outlet of the external ejector tube (12) is horizontally positioned and points towards the drainage inlet (231). When viewed along the direction from the outlet of the external ejector tube (12) towards the drainage inlet (231), the outlet of the external ejector tube (12) is completely located within the drainage inlet (231). A gap is provided between the outlet of the external ejector tube (12) and the drainage inlet (231). The external drainage tube (23) includes a straight section (235), and the drainage inlet (231) is located at one end of the straight section (235). The straight section (235) is positioned along the direction from the outlet of the external ejector tube (12) towards the drainage inlet (231). The external drainage tube (23) includes a rotating drainage wall (233) that is an arc when viewed from above and is located only inside the straight section (235).

2. The high combustion efficiency burner of claim 1, wherein The external drainage tube (23) includes an upward drainage wall (234), the height of which gradually rises from bottom to top to connect with the drainage outlet (232).

3. The high-efficiency burner of claim 2, wherein The rotating drainage wall (233) is tangent to the outer wall of the straight segment (235).

4. The high-efficiency burner of claim 3, wherein There are multiple external ejector tubes (12) and external drain tubes (23) of equal number. The external ejector tubes (12) are rotationally symmetrical about the axis of the external combustion chamber (22).

5. The high-efficiency burner of claim 4, wherein One of the external ejector tube (12) and the gas distribution assembly (2) is provided with a rotary positioning post (14) and the other is provided with a rotary positioning hole (141), with the rotary positioning post (14) embedded in the rotary positioning hole (141).

6. The high combustion efficiency burner of claim 1, wherein The combustion cap (8) also includes an inner combustion cap (81). The gas distribution assembly (2) is provided with an inner combustion chamber (21) located inside the outer combustion chamber (22). The inner combustion cap (81) covers the top opening of the inner combustion chamber (21). The gas source connection assembly (1) is provided with an inner injection pipe (11). The inner injection pipe (11) includes an inner gas source connection part (18). The inner injection pipe (11) is located inside the outer ejector pipe (12) and its outlet is vertically upward. The outlet of the inner injection pipe (11) is connected to the bottom end of the inner combustion chamber (21).

7. The high-efficiency burner of claim 6, wherein The air source connection assembly (1) also includes a pressure boosting splitter (13), the outer side of which is a downward conical shape and is fixed inside the inner injection pipe (11) and coaxial with the inner injection pipe (11).

8. The high-efficiency burner of claim 6, wherein The gas source connection assembly (1) is placed on the gas distribution assembly (2), and the outer ejector tube (12) extends to form an extension arm (129). The other end of the extension arm (129) is fixedly connected to the inner injection tube (11).

9. The high-efficiency burner of claim 6, wherein, The inner gas source connecting part (18) is arranged obliquely relative to the vertical direction.

10. The high-efficiency burner according to claim 1, characterized in that, The installation disc (9) is provided with an installation disc positioning hole (92); the gas source connecting assembly (1) is provided with an installation disc positioning table (91) embedded in the installation disc (9), and the installation disc (9) is placed on the gas source connecting assembly (1).

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