CN219318431U - Burner with a burner body - Google Patents

Abstract

The utility model relates to a burner and a combustion method; the burner comprises a first shell, a second shell and a plurality of distribution parts, wherein the first ends of the distribution parts are arranged on the outer peripheral surface of the second shell in a surrounding mode by taking the axis of the second shell as a shaft, the second ends of the distribution parts penetrate through the first shell to divide the first cavity into a plurality of independent cavities along the radial direction, the independent cavities are respectively communicated with a plurality of first air outlet groups, second air outlet groups are arranged on two side faces, facing away from each other, of each distribution part, and the connecting line between the second air outlet groups and the first air outlet groups is perpendicular to the axis of the first shell; the combustor of this application through not setting up the premixing chamber, and makes air and gas mix and ignite the operation in the outside of first casing, consequently difficult emergence tempering accident or take off the fire phenomenon, guarantees the security, can guarantee the mixed effect of air and gas through the cross jet simultaneously, and then guarantees the combustion effect.

Description

Burner with a burner body

Technical Field

The utility model relates to the technical field of combustors, in particular to a combustor.

Background

The mainstream low-nitrogen technology of the current gas burner comprises a full premix combustion technology, a flue gas external circulation technology (FGR) and a flue gas internal circulation technology (FIR). The full premix combustion technology can fully premix the fuel gas and the air before entering the combustion chamber, so that the combustion is more complete, the effects of improving the combustion efficiency, reducing the emission of harmful gas and reducing the space requirement of the combustion chamber are achieved, and the full premix combustion technology becomes a relatively advanced fuel gas combustion technology in the world at present.

The existing burner adopting the full premix combustion technology generally comprises a premix chamber and a combustion chamber, wherein fuel gas and air are mixed in the premix chamber through a fan and then sent into the combustion chamber, and the combustion chamber burns the mixed gas.

However, the stability of the existing burner adopting the full premix combustion technology depends on the balance of the flow rate and the combustion speed of the gas, and when the balance is destroyed under the conditions of gas component change, gas flow channel blockage or gas temperature change, and the like, the backfire accident or the fire removal phenomenon can occur when the combustion speed is larger than the gas flow speed, so that the use safety is affected.

Disclosure of Invention

The utility model aims to provide a burner which can prevent backfire accidents or fire falling phenomena while ensuring the mixing effect of gases.

The technical problems are solved by the following technical scheme:

a burner, comprising:

the device comprises a first shell, wherein a first air inlet is formed in the first shell, a first cavity communicated with the first air inlet is formed in the first shell, a plurality of first air outlet groups communicated with the first cavity are formed in the peripheral surface of the first shell, and the first air outlet groups are uniformly distributed around the axis of the first shell;

the second shell is arranged in the first cavity, an air cavity for air to pass through is formed between the outer side wall of the second shell and the inner side wall of the first cavity, a second air inlet is formed in the second shell, and a second cavity communicated with the second air inlet is formed in the second shell;

the inside of distributing piece is equipped with the third cavity, be equipped with the second gas outlet group on the distributing piece, just the second gas outlet group passes through the third cavity with the second cavity communicates with each other, the distributing piece is in the radial first end and the second end that have relatively of second casing, a plurality of the first end of distributing piece regard the axis of second casing as the axle, encircle and set up on the outer peripheral face of second casing, a plurality of the second ends of distributing piece all are located the outside of first casing, the outer peripheral face of first casing and adjacent two the distributing piece are joined in marriage and are become the mixing zone, the second gas outlet group with first gas outlet group all is located in the mixing zone.

According to the burner, air enters the mixing area through the plurality of first air outlet groups, fuel gas enters the mixing area through the second air outlets, the air and the fuel gas in the mixing area are subjected to cross jet flow after being contacted, so that internal reflux favorable for ignition is formed, the air and the fuel gas are intensively mixed to form mixed gas, the combustion characteristics of the burner are similar to those of a cyclone burner, flame can be outwards spread from the inner edge of an area where the internal reflux is located after the mixed gas is ignited, meanwhile, external reflux can be formed at the periphery of the air flow, high-temperature flue gas is sucked by the external reflux to heat the mixed gas, and then flame for stable combustion is formed, and the air and the fuel gas are mixed and ignited outside the first shell without a premixing chamber, so that backfire accidents or fire removal phenomena are difficult to occur, the safety is ensured, meanwhile, the mixing effect of the air and the fuel gas can be ensured through the cross jet flow, and the combustion effect is further ensured.

In one embodiment, the two opposite sides of the distributing member are respectively provided with a second air outlet group, and the connecting lines of the two second air outlet groups are perpendicular to the radial direction and the axial direction of the second shell.

In the above embodiment, by increasing the number of the second gas outlet groups, the output paths of the gas can be increased, 5, thereby making the gas output more uniform.

In one embodiment, the first housing and the second housing are coaxially arranged, the first air outlet group includes a plurality of first air outlet monomers uniformly distributed along an axis of the first housing, and the second air outlet group includes a plurality of second air outlet monomers uniformly distributed along an axis of the first housing.

In the above embodiment, through evenly distributing a plurality of first single and a plurality of second single of giving vent to anger, 0 make through air and gas can be respectively through a plurality of first single and a plurality of second single of giving vent to anger even output of giving vent to anger, and then make the mixed gas evenly burn, avoid producing harmful gas because of concentrated burning, also avoid the damage that the high temperature that produces because of concentrated burning produced to the combustor.

In one embodiment, the burner further comprises an air distributing member, the air distributing member is sleeved on the second shell and is in butt joint with the inner peripheral surface of the first cavity, a plurality of air regulating ports are formed in the air distributing member, and the air regulating ports are communicated with the air chamber.

In the above embodiment, the gas in the first housing may be uniformly distributed by the gas distributing member, so that the gas may be uniformly output through the plurality of first gas outlet groups.

In one embodiment, the gas distributing member comprises an annular plate and a plurality of cyclone teeth, the gas regulating ports are arranged on the annular plate along the circumferential direction, the cyclone teeth are respectively arranged on the edges of the gas regulating ports 0, and an included angle is formed between the cyclone teeth and the end face of the annular plate.

In the above embodiment, the gas flow direction can be guided by the cyclone teeth, and the gas flow direction can be correspondingly changed by changing the included angle, so that the shape and the position of the ignited flame can be changed according to the requirement in cooperation with the second gas outlet group.

In one embodiment, the angle a between the axis of the second air outlet unit and the radial direction of the first shell is 0-60 degrees.

In the above embodiment, the shape and position of the ignited flame may be changed by the cooperation of the second air outlet monomer having an inclined angle with the cyclone teeth having an inclined angle.

In one embodiment, the second air outlet group comprises a plurality of second air outlet monomers uniformly distributed along the axis of the first shell, and the aperture of each second air outlet monomer is 1-3mm.

In the above embodiment, under the condition that the area heat intensity and the volume heat intensity are close, the aperture of the millimeter-level air outlet monomer is larger than that of the micron-level metal fiber hole, so compared with the traditional metal fiber burner, the burner is not easy to burn due to blockage.

In one embodiment, the distance L between the second air outlet monomer and the second end of the distribution member satisfies 3 D.ltoreq.L.ltoreq.30D, and the thickness W of the distribution member satisfies D.ltoreq.W.ltoreq.10D, wherein D is the aperture of the second air outlet monomer.

In the embodiment, the burner can have better external reflux and internal reflux effects through size limitation, so that the combustion effect is ensured.

In one embodiment, the first housing includes a mounting shell, a mounting flange and an end cover, the mounting flange and the end cover are respectively disposed at two axial ends of the mounting shell, and the first air inlet and the plurality of first air outlets are both disposed on the mounting shell.

In the above embodiment, the burner can be installed in an auxiliary manner through the installation flange, and the first air inlet and the plurality of first air outlets are arranged on the installation shell, so that the length of the space occupied by the first shell after installation can be kept unchanged.

In one embodiment, the second housing comprises an inlet section, a transition section and a main body section, the inlet section and the main body section are respectively communicated with each other and arranged at two axial ends of the transition section, the caliber of the inlet section is smaller than that of the main body section, the inlet section is penetrated and fixed on the mounting flange, and a plurality of second air outlets are all arranged on the main body section.

In the above embodiments, the gas can be made to enter into the transition section and the main body section through the inlet section, and by passing through and fixing the inlet section on the mounting flange, the stability between the first housing and the second housing can be ensured.

In one embodiment, the distributing member has a plate-shaped structure, the first side surface and the second side surface of the distributing member, which are opposite to each other, are respectively provided with the second air outlet group, and the first side surface and the second side surface are respectively perpendicular to the second housing.

In the above embodiment, the plate-shaped structure is simple and easy to perform processing operation, and the first side surface and the second side surface are perpendicular to the second shell, so that the distance between two adjacent distribution parts is ensured to be consistent, and the distance between two adjacent second air outlet groups is ensured to be consistent.

Drawings

FIG. 1 is a schematic structural view of a combustor according to some embodiments of the present application;

FIG. 2 is a schematic view of a portion of a burner according to some embodiments of the present application;

FIG. 3 is a schematic view of a burner in a split configuration according to some embodiments of the present application;

FIG. 4 is a schematic structural view of a mounting case of a combustor according to some embodiments of the present application;

FIG. 5 is a schematic structural view of a second housing of a combustor according to some embodiments of the present application;

FIG. 6 is a schematic structural view of a distributor member of a combustor according to some embodiments of the present application;

FIG. 7 is an external schematic view of a distributor member of a combustor according to some embodiments of the present application;

FIG. 8 is a schematic view of a gas distribution member of a combustor according to some embodiments of the present application;

FIG. 9 is a combustion schematic diagram of a combustor according to some embodiments of the present application.

Reference numerals:

1. a first housing;

11. a mounting shell; 12. a mounting flange; 13. an end cap;

14. a first air inlet;

15. a first cavity;

151. a separate cavity;

16. a first air outlet group;

161. a first outlet gas monomer;

17. a first mounting port;

2. a second housing;

21. an inlet section; 22. a transition section; 23. a main body section;

24. a second air inlet;

25. a second cavity;

26. a second mounting port;

3. a dispensing member;

31. a third cavity;

32. a first side;

33. a second side;

34. a first end;

35. a second end;

36. a through port;

37. a second air outlet group;

371. a second outlet gas monomer;

4. an air dividing piece;

41. an annular plate; 42. cyclone teeth;

43. an air regulating port;

5. a mixing zone;

6. internal reflux;

7. and (5) external reflux.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axis", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

The full premix combustion technology is a combustion mode in which fuel gas is fully mixed with enough air before entering a combustor so that air supply is not needed in the combustion process. The existing burner adopting the full premix combustion technology generally comprises a premix chamber and a combustion chamber which are communicated, wherein air and fuel gas are mixed in the premix chamber and then sent into the combustion chamber for combustion operation. However, since the mixed gas is a combustible gas, when the combustion speed is higher than the mixed gas supply speed, the flame is easy to transmit and burn the mixed gas which does not enter the combustion chamber along the pipeline, and thus tempering accidents or fire-out phenomena occur, which affects the use safety.

The present application provides a burner to above-mentioned problem, and this burner does not set up the premixing room, but directly utilizes self structure, makes air and gas can carry out the homogeneous mixing in the outside mixing zone of combustor, forms combustible mixed gas to make mixed gas be ignited on the marginal zone of outer backward flow and form stable burning flame. Because the premixing chamber is not arranged, tempering accidents or fire-out phenomena are not easy to occur, and because air and fuel gas can be subjected to cross jet flow in the mixing area, the mixing effect can be ensured, and the combustion effect is further ensured.

Referring to fig. 1-3, an embodiment of the present utility model provides a burner comprising a first housing 1, a second housing 2 and a number of distribution members 3. Wherein the first housing 1 is used for accommodating and uniformly outputting air. The second housing 2 is for containing fuel gas. The distributing members 3 are used for uniformly outputting the fuel gas in the second casing 2, and the uniformly output fuel gas can be intersected with the uniformly output air to form mixed gas.

The first shell 1 is provided with a first air inlet 14, a first cavity 15 communicated with the first air inlet 14 is arranged in the first shell 1, the outer peripheral surface of the first shell 1 is provided with a plurality of first air outlet groups 16 communicated with the first cavity 15, and the first air outlet groups 16 are uniformly distributed around the axis of the first shell 1.

Specifically, referring to fig. 3, the first housing 1 includes a mounting case 11, a mounting flange 12, and an end cover 13, the mounting flange 12 and the end cover 13 being disposed at both axial ends of the mounting case 11, respectively. Further, referring to fig. 1 and 3 in combination, the first cavity 15 is defined by the mounting flange 12, the end cap 13, and the inner peripheral surface of the mounting case 11. Wherein the mounting flange 12 housing is used to assist in mounting the burner on a designated device. The first air inlet 14 and the plurality of first air outlets are arranged on the mounting shell 11, so that the whole length of the space occupied by the first shell 1 is unchanged after the first shell 1 is mounted on the appointed equipment through the mounting flange 12.

More specifically, the mounting case 11 has a partial longitudinal sectional profile perpendicular to the axis in the shape of a ring. The plurality of first air outlets are uniformly provided on the outer circumferential surface of the installation housing 11 in the circumferential direction. The outer peripheral surface of the installation shell 11 is also provided with a plurality of first installation openings 17 in a surrounding mode, the first installation openings 17 and the first air outlet groups 16 are communicated with the first cavity 15, and the first installation openings 17 and the first air outlets are arranged at intervals.

Referring to fig. 1, the second housing 2 is disposed in the first cavity 15, and an air chamber for air to pass through is formed between an outer sidewall of the second housing 2 and an inner sidewall of the first cavity 15, a second air inlet 24 is disposed on the second housing 2, and a second cavity 25 communicating with the second air inlet 24 is disposed inside the second housing 2.

Specifically, referring to fig. 1 and 3, the second housing 2 includes an inlet section 21, a transition section 22, and a main body section 23, the inlet section 21 and the main body section 23 are respectively disposed at both axial ends of the transition section 22 in a communicating manner, and the aperture of the inlet section 21 is smaller than that of the main body section 23. The smaller bore inlet section 21 facilitates adaptation to the same smaller bore gas line, and thus facilitates assembly. The inlet section 21 passes through and is secured to the mounting flange 12. By passing the inlet section 21 through and securing it to the mounting flange 12, stability between the first housing 1 and the second housing 2 is ensured, while also allowing an external gas shell to enter the transition section 22 and the main body section 23 through the inlet section 21.

More specifically, referring to fig. 5, a plurality of second mounting openings 26 are formed around the outer peripheral surface of the second housing 2 with the axis of the second housing 2 as a shaft. That is, the longitudinal cross-sectional profile of the main body section 23 perpendicular to the axis is annular, and the plurality of second mounting openings 26 are all provided uniformly on the outer peripheral surface of the main body section 23 in the circumferential direction.

Referring to fig. 2 and 7, the distributing member 3 has a first end 34 and a second end 35 opposite to each other in the radial direction of the second housing 2, the first ends 34 of the distributing member 3 are circumferentially disposed on the outer peripheral surface of the second housing 2 with the axis of the second housing 2 as a shaft, the second ends 35 of the distributing member 3 are all penetrating the first housing 1 and located outside the first housing 1, the distributing member 3 divides the first cavity 15 into a plurality of separate cavities 151 circumferentially disposed on the axis of the second housing 2, and the separate cavities 151 are respectively communicated with the plurality of first air outlet groups 16.

Specifically, referring to fig. 2, 4 and 5, the first ends 34 of the plurality of distributing members 3 are respectively disposed on the plurality of second mounting openings 26, the second ends 35 of the plurality of distributing members 3 respectively pass through the plurality of first mounting openings 17, and the outer circumferential surfaces of the distributing members 3 are abutted against the inner circumferential surfaces of the first mounting openings 17. The portions of the distributing member 3 located in the first and second housings 1 and 2 may divide the air chamber into a plurality of separate cavities 151 in a radial direction so that the plurality of first air outlet groups 16 may communicate with the plurality of separate cavities 151, respectively, and thus the gas in the first housing 1 may be uniformly distributed. When gas is inputted into the first housing 1, the gas may enter the plurality of individual chambers 151 and be uniformly outputted through the plurality of first gas outlet groups 16.

Furthermore, referring to fig. 2, 3 and 6, the second air outlet groups 37 are provided on both sides of each of the distribution members 3 facing away from each other, and the connecting lines of the two second air outlet groups 37 are perpendicular to the radial direction and the axial direction of the second housing 2. The inside of the distributing member 3 is provided with a third cavity 31, and the second air outlet group 37 is communicated with the second cavity 25 through the third cavity 31, the outer peripheral surface of the first shell 1 and the adjacent two distributing members 3 are matched to form a mixing area 5, and the second air outlet group 37 and the first air outlet group 16 are both positioned in the mixing area 5. The intersection of the axis of the second air outlet group 37 and the axis of the first air outlet group 16 is located within the mixing zone 5.

In particular, the distributor 3 has a plate-like structure, which is simple and easy to carry out the machining operations. The first side 32 and the second side 33 of the distributing member 3 facing away from each other are provided with a second air outlet group 37, and the first side 32 and the second side 33 are perpendicular to the second housing 2. By making both the first side 32 and the second side 33 perpendicular to the second casing 2, the distance between the two adjacent distribution members 3 is ensured to be consistent, and further, the distance between the two adjacent second air outlet groups 37 is ensured to be consistent. The first end 34 of the dispensing member 3 is provided with a through opening 36 and the third cavity 31 communicates with the second cavity 25 via the through opening 36. When gas is introduced into the second housing 2, the gas can enter the third cavity 31 through the second cavity 25 and the through-hole 36 and be uniformly output through the second gas outlet group 37.

The first end 34 of the distributor 3 is perpendicular to the first side 32 and the second side 33 of the distributor 3 where the second air outlet set 37 is located, and the second end 35 of the distributor 3 is also perpendicular to the first side 32 and the second side 33 of the distributor 3 where the second air outlet set 37 is located.

In addition, the number of the second air outlet groups 37 on the first side 32 of the distributing member 3 is the same as the number of the second air outlet groups 37 on the second side 33 of the distributing member 3, and the number of the second air outlet groups may be one group, or may be 2 or more groups.

Referring to fig. 1 and 9, when the burner disclosed by the application is used, air is input into the first shell 1 through the first air inlet 14, so that the air is finally input into the mixing zone 5 through the first air outlet groups 16 after being respectively input into the first air outlet groups 16 through the independent cavities 151, gas is input into the second shell 2 through the second air inlet 24, the gas is finally input into the mixing zone 5 through the second air outlet groups 37 after being respectively input into the second air outlet groups 37 through the distributing pieces 3, the air and the gas in the mixing zone 5 are subjected to cross jet flow after being contacted, internal reflux which is favorable for ignition is formed, the air and the gas are intensively mixed to form mixed gas, the mixed gas is similar to the combustion characteristics of the cyclone burner, the mixed gas can be outwards spread from the inner edge of an area where the internal reflux is located after being ignited, meanwhile, the external reflux can also take up high-temperature flue gas to heat the mixed gas so as to form stable combustion flame, and the mixed gas is easy to mix the air and the gas outside the first shell, the mixed gas is easy to mix with the fire through the first air and the gas, the cross jet flow is easy to ignite, the air and the fire is easy to mix with the fire is easy to occur, the fire is not easy to occur, the fire is easy to mix and the air and the fire is easy to mix, the fire is safe, and the safety is guaranteed.

Referring to fig. 3, in one embodiment, the first housing 1 and the second housing 2 are coaxially disposed, the first air outlet group 16 includes a plurality of first air outlet cells 161 uniformly distributed along the axis of the first housing 1, and the second air outlet group 37 includes a plurality of second air outlet cells 371 uniformly distributed along the axis of the first housing 1. Through evenly distributed a plurality of first monomers 161 and a plurality of second monomers 371 of giving vent to anger, make through air and gas can be respectively through a plurality of first monomers 161 and a plurality of second monomers 371 of giving vent to anger evenly output, and then make the mixed gas evenly burn, avoid producing harmful gas because of concentrated burning, also avoid the damage that the high temperature that produces because of concentrated burning produced to the combustor.

Specifically, the number of the first outlet cells 161 of the first outlet group 16 of each group is the same as or ±1 from the number of the second outlet cells 371 of the second outlet group 37 of each group.

More specifically, the number of the first outlet cells 161 of the first outlet group 16 of each group is 5 to 50, and the number of the second outlet cells 371 of the second outlet group 37 of each group is 5 to 50.

In addition, the shape of the second outlet cell 371 may be circular or elliptical. Wherein the diameter of the circle is 1-3mm, and the length of the minor axis of the ellipse is 1-3mm. The shape of the second air outlet unit 371 may also be square or rectangular. Wherein the side length of the square and the short side length of the rectangle are 1-3m.

Referring to fig. 9, the distance L between the second air outlet monomer 371 and the second end 35 of the distribution member 3 satisfies 3 d+.l+.30d, and the thickness W of the distribution member 3 satisfies d+.w+.10d, where D is the aperture of the second air outlet group 37. Through the restriction of size, guarantee that the combustor has better outer backward flow and interior backward flow effect, and then guarantee the combustion effect.

That is, if W is greater than 10D, it is unfavorable for flame transfer between flames in the mixing zone 5 where the two inner reflux streams 6 are located; if W is smaller than D, the area where the outer reflux 7 is located is too small, resulting in unstable combustion.

If L is smaller than 3D, the mixing effect of the fuel gas and air in the mixing zone 5 is insufficient, resulting in poor combustion effect; if L > 30D, the whole structure of the burner occupies too large space and is not compact enough.

Referring to fig. 1 and 8, in one embodiment, the burner further includes an air distributing member 4, the air distributing member 4 is sleeved on the second housing 2 and is abutted with the inner peripheral surface of the first cavity 15, a plurality of air adjusting ports 43 are arranged on the air distributing member 4, and the plurality of air adjusting ports 43 are all communicated with the air chamber. The gas in the first housing 1 can be uniformly distributed through the gas distributing member 4, so that the gas can be uniformly output through the plurality of first gas outlet groups 16.

Specifically, the gas separation member 4 is coaxial with the first housing 1 and the second housing 2. The inner peripheral surface of the air distributor 4 is in contact with the outer peripheral surface of the main body section 23, and the outer peripheral surface of the air distributor 4 is in contact with the inner peripheral surface of the mounting case 11. The air regulating ports 43 are uniformly distributed on the air distributing member 4 along the circumferential direction, and the air regulating ports 43 are respectively communicated with the first air outlet groups 16 through the independent cavities 151.

In one embodiment, the air dividing member 4 includes an annular plate 41 and a plurality of cyclone teeth 42, a plurality of air regulating ports 43 are circumferentially arranged on the annular plate 41, a plurality of cyclone teeth 42 are respectively arranged on edges of the plurality of air regulating ports 43, and an included angle is formed between the cyclone teeth 42 and an end face of the annular plate 41. The cyclone teeth 42 can guide the flow direction of the gas, and the included angle can be changed correspondingly to guide and rectify the flame gas flow by matching with the second gas outlet group 37 according to the requirement.

Specifically, the shape of the air regulating opening 43 is consistent with that of the cyclone teeth 42, and the air regulating opening is triangular. When the gas enters the independent cavity 151 through the gas regulating port 43, the cyclone teeth 42 can guide the flow direction of the gas, so that the gas forms a cyclone in the independent cavity 151, and the gas is further output on the first gas outlet monomer 161 at a certain angle. Different angles will result in different locations of the inner reflux 6 of the gas within the mixing zone 5 and thus changing the outer reflux 7. Therefore, the shape and position of the flame can be adjusted by adjusting the included angle between the cyclone teeth 42 and the air adjusting opening 43.

In one embodiment, the angle a between the axis of the second outlet cell 371 and the radial direction of the first housing 1 is 0-60 °. The flame gas flow can be guided and rectified by the cooperation between the second gas outlet monomer 371 having an inclined angle and the cyclone teeth 42 having an inclined angle.

Specifically, referring to fig. 7, the second air outlet unit 371 is a straight hole or an inclined hole, and the angle a between the axis of the second air outlet unit 371 and the axis of the first housing 1 is 0-60 °.

In addition, when the included angle between the axis of the second air outlet monomer 371 and the axis of the first shell 1 is 0, the distance between the gas nozzle farthest from the center of the burner and the second end 35 of the distributing piece is 3D less than or equal to L less than or equal to 30D; when the included angle between the axis of the second air outlet monomer 371 and the axis of the first shell 1 is 60 degrees, the distance between the gas nozzle farthest from the center of the burner and the second end 35 of the distribution piece is 5D less than or equal to L less than or equal to 50D. D is the aperture of the second air outlet group 37.

In one embodiment, the second air outlet group 37 includes a plurality of second air outlet cells 371 uniformly distributed along the axis of the first housing, and the second air outlet cells 371 have a pore size of 1-3mm. The existing burner adopting the full premix combustion technology is generally a metal fiber burner, and the aperture of the metal fiber burner is in the micron level, so that the blockage phenomenon is easy to occur when the air contains particulate matters, and the using effect is influenced. And the second of this application gives vent to anger the monomer 371 and is the millimeter level, and under the condition that area hot intensity and volume hot intensity are close, the aperture that millimeter level given vent to anger the monomer is greater than the aperture in micron level metal fiber hole, consequently compare with traditional metal fiber combustor, this combustor is difficult for causing the burning loss because of taking place to block up.

When the burner is specifically used, air is input into the first shell 1 through the first air inlet 14, the air can enter a plurality of independent cavities 151 through a plurality of air adjusting ports 43 respectively, the cyclone teeth 42 can guide the flow direction of the air in the entering process, the air forms cyclone in each independent cavity 151, and then the air is output into the mixing zone 5 at a certain angle on each first air outlet monomer 161.

The gas is input into the second casing 2 through the second air inlet 24, so that the gas enters the third cavities 31 of the plurality of distribution members 3 through the openings 36, and finally is uniformly output into the mixing zone 5 through the plurality of second air outlet monomers 371. The air and the gas are cross-jet in the mixing zone 5 to form a mixed gas.

When the air and the gas are cross-injected in the mixing zone 5, an inner return flow 6 is formed, which inner return flow 6 causes the leeward side of the distributor 3 to form an outer return flow 7, so that the gas mixture can be ignited on the edge region forming the outer return flow 7 and a stable burning flame is formed.

The burner of this application carries out evenly distributed through first casing 1 and second casing 2 to air and gas, makes air and gas after the distribution can mix and ignite through the mode of cross jet in the outside of first casing 1, can guarantee the mixed effect of air and gas through cross jet, and then guarantees the combustion effect, and the while mixes outward and need not to set up the premixing chamber, consequently the difficult emergence backfire accident of burner or take off the fire phenomenon, guarantees the security.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A burner, comprising:

the device comprises a first shell (1), wherein a first air inlet (14) is formed in the first shell (1), a first cavity (15) communicated with the first air inlet (14) is formed in the first shell (1), a plurality of first air outlet groups (16) communicated with the first cavity (15) are formed in the peripheral surface of the first shell (1), and the plurality of first air outlet groups (16) are uniformly distributed around the axis of the first shell (1);

the second shell (2), the second shell (2) is arranged in the first cavity (15), an air cavity for air to pass through is formed between the outer side wall of the second shell (2) and the inner side wall of the first cavity (15), a second air inlet (24) is formed in the second shell (2), and a second cavity (25) communicated with the second air inlet (24) is formed in the second shell (2);

the inside of a plurality of distribution pieces (3), be equipped with third cavity (31) on distribution piece (3), be equipped with second gas outlet group (37) on distribution piece (3), just second gas outlet group (37) pass through third cavity (31) with second cavity (25) communicate with each other, distribution piece (3) are in radial direction of second casing (2) has relative first end (34) and second end (35), a plurality of first end (34) of distribution piece (3) regard the axis of second casing (2) as the axle, encircle and set up on the outer peripheral face of second casing (2), a plurality of second end (35) of distribution piece (3) all pass first casing (1) and are located the outside of first casing (1), the outer peripheral face of first casing (1) with two adjacent distribution piece (3) cooperate to enclose into mixing zone (5), second gas outlet group (37) and first gas outlet group (16) are located mixing zone (5).

2. Burner according to claim 1, characterized in that the two sides of the distributor (3) facing away are provided with second air outlet groups (37), and that the connection lines of the two second air outlet groups (37) are perpendicular to the radial and axial direction of the second housing (2).

3. The burner according to claim 1, further comprising an air distributing member (4), wherein the air distributing member (4) is sleeved on the second housing (2) and is abutted against the inner peripheral surface of the first cavity (15), a plurality of air regulating ports (43) are formed in the air distributing member (4), and the air regulating ports (43) are communicated with the air chamber.

4. A burner according to claim 3, wherein the gas-dividing member (4) comprises an annular plate (41) and a plurality of cyclone teeth (42), the plurality of gas-regulating ports (43) are circumferentially arranged on the annular plate (41), the plurality of cyclone teeth (42) are respectively arranged on the edges of the plurality of gas-regulating ports (43), and an included angle is formed between the cyclone teeth (42) and the end face of the annular plate (41).

5. The burner according to claim 1, wherein the first housing (1) is arranged coaxially with the second housing (2), the first air outlet group (16) comprises a number of first air outlet cells (161) evenly distributed along the axis of the first housing, and the second air outlet group (37) comprises a number of second air outlet cells (371) evenly distributed along the axis of the first housing.

6. Burner according to claim 5, characterized in that the angle a between the axis of the second outlet cell (371) and the radial direction of the first housing (1) is 0-60 °.

7. Burner according to claim 1, wherein the second set of air outlets (37) comprises a plurality of second air outlet cells (371) evenly distributed along the axis of the first housing, the second air outlet cells (371) having a pore size of 1-3mm.

8. The burner according to claim 7, wherein the distance L of the second outlet monomer (371) from the second end (35) of the distributor (3) is 3D-L-30D, the thickness W of the distributor (3) is D-W-10D, wherein D is the pore size of the second outlet monomer (371).

9. Burner according to claim 1, characterized in that the first housing (1) comprises a mounting shell (11), a mounting flange (12) and an end cover (13), the mounting flange (12) and the end cover (13) being arranged at the axial ends of the mounting shell (11), respectively, the first air inlet (14) and the plurality of first air outlets being arranged on the mounting shell (11).

10. Burner according to claim 9, characterized in that the second housing (2) comprises an inlet section (21), a transition section (22) and a main body section (23), the inlet section (21) and the main body section (23) are respectively arranged at two axial ends of the transition section (22) in a communicated manner, the caliber of the inlet section (21) is smaller than that of the main body section (23), the inlet section (21) is arranged on the mounting flange (12) in a penetrating manner and is fixed, and a plurality of second air outlets are arranged on the main body section (23).

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