High-adaptability gas burner
By designing multiple air nozzles and gas nozzles in the gas burner and using premix components to achieve premix of gas and air, the problem of uneven mixing ratio of gas burner in different environments is solved, and the combustion effect is improved.
Patent Information
- Application Number
- CN202422413006.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The existing gas burners are difficult to maintain an ideal gas-air mixing ratio under different environments, especially in plateau hypoxia environments.
A highly adaptable gas burner is designed, by setting multiple air nozzles and gas nozzles in the combustion head, and using the premix assembly to guide air and gas premix to prolong the gas mixing time and achieving more uniform mixing using the difference in gas flowability.
It improves the mixing effect of gas and air, makes the combustion more even, adapts to the combustion needs in different environments, and improves the combustion effect.
Smart Images
Figure CN223137877U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of gas burners, and in particular, to a highly adaptable gas burner. Background Art
[0002] A gas burner is a common component used in furnaces such as heating furnaces and drying furnaces for igniting the furnace.
[0003] The gas burner transports gas and air to the ignition point for ignition. During the combustion process, a certain ratio of gas and air is required to achieve an ideal combustion effect. Since the oxygen content in the air varies at different locations and environments, there is also a certain difference in the mixing ratio. Especially in the oxygen-deficient environment of the plateau, the oxygen content in the air is relatively low. However, the existing gas burners mix gas and air at the ignition point and then ignite them, resulting in a mixing ratio that cannot reach the ideal state. Therefore, it is necessary to study a highly adaptable gas burner. Utility Model Content
[0004] In order to improve the combustion effect, this application provides a highly adaptable gas burner.
[0005] A highly adaptable gas burner provided by this application adopts the following technical solutions:
[0006] A highly adaptable gas burner includes a housing and a premixing structure arranged on the housing. The premixing structure includes:
[0007] A combustion head, which is conical and has its larger-diameter end arranged on the inner part of the housing and is provided with a plurality of air nozzles;
[0008] A gas spray head, which is arranged at the other end of the combustion head and is provided with a plurality of gas nozzles;
[0009] A gas pipe, which is arranged on the gas spray head and is located inside the housing. The gas pipe is used for inputting gas and is connected to the inside of the combustion head through the gas nozzles. An air passage for air to pass through is formed between the gas pipe and the inner side wall of the housing, and the air enters the combustion head through the air nozzles and is mixed with the gas;
[0010] A premixing component, which is arranged on the gas spray head and is used to guide the premixing of air and gas.
[0011] By adopting the above technical solution, air enters the burner head through the air passage and multiple air nozzles, while gas enters the burner head through the gas pipe and multiple gas nozzles. The premixing component first guides the air to mix with the just-emitted gas, and then the gas continues to move and mix with the air located in the burner head, thus extending the gas mixing time. At the same time, due to the reason of flow self-balancing, the gas at the high-pressure part in the burner head will flow to the low-pressure part of the gas, thereby further improving the mixing effect, making the mixing ratio of gas and air closer to the ideal state. Then the mixed gas is removed through the housing for ignition, thereby improving the combustion effect. Therefore, a gas burner with high adaptability is provided.
[0012] Optionally, the premixing component is located in the burner head, and the premixing component includes:
[0013] A connecting column, arranged at one end of the gas nozzle close to the burner head;
[0014] A premixing part, arranged on the connecting column and provided with a plurality of premixing holes corresponding to the gas nozzles. An input hole for air to enter and communicate with the gas nozzles and the premixing holes is formed between the premixing part and the gas nozzle, so that the gas in the gas pipe enters the burner head through the gas nozzles and the premixing holes, and the air in the burner head is inhaled into the premixing holes through the input hole.
[0015] By adopting the above technical solution, the gas is ejected through the gas nozzle into the premixing hole under the action of the pressure in the gas pipe, and the flow of the gas generates a suction force on the air in the burner head, so that the air is inhaled through the input hole and then enters the premixing hole to mix with the gas. Therefore, the mixing of gas and air can be better realized in a narrow space, thus greatly improving the mixing effect and the combustion effect.
[0016] Optionally, the diameter of the gas nozzle is D1 and the diameter of the premixing hole is D2, and D2≥D1.
[0017] By adopting the above technical solution, if air enters the premixing hole and the diameters of the premixing hole and the gas nozzle are the same, part of the gas will overflow through the input hole, thus reducing the mixing effect. Therefore, the diameter of the premixing hole is larger than that of the gas nozzle, so that the gas passing through the gas nozzle can enter the premixing hole as much as possible to mix with the air, improving the gas mixing effect and the combustion effect.
[0018] Optionally, the gas nozzle includes a plurality of axial nozzles and a plurality of radial nozzles. The plurality of axial nozzles and the plurality of radial nozzles are both arranged in a circumferential array around the axis of the gas nozzle. The plurality of radial nozzles are located outside the plurality of axial nozzles and are inclined away from the axis of the gas nozzle at one end far from the gas pipe.
[0019] By adopting the above technical solution, since the air entering the gas burner through the air nozzle will move towards the center of the burner head, i.e., the axis, the air concentration at the center of the burner head will be high and the air concentration in other places will be low, thus reducing the gas mixing effect.
[0020] After the gas is ejected through the axial nozzle and multiple radial nozzles and mixed with the air, the multiple axial nozzles are located on the periphery of the axis of the burner head, reducing the probability of the gas flowing towards the center of the burner head. Moreover, the gas passing through the radial holes will block the air entering the burner head from moving towards the center of the burner head, so that the gas entering the burner head will be mixed with the gas immediately, thus improving the gas mixing effect and the combustion effect.
[0021] Optionally, the multiple axial nozzles are arranged in one-to-one correspondence with the multiple premixing holes and their axes coincide, and D2 = 1.5D1.
[0022] By adopting the above technical solution, the axial nozzle is arranged corresponding to the premixing hole, so that the resistance of the gas entering the premixing hole through the axial nozzle is greatly reduced, improving the mixing effect. Moreover, D2 = 1.5D1 can reduce the size of the premixing part while meeting the requirement of reducing the gas passing through the input hole, leaving a larger space for the gas and air to mix, thus further improving the mixing effect.
[0023] Optionally, the distance between the axial nozzle and the premixing hole is C, and D1 ≤ C ≤ 4D1.
[0024] By adopting the above technical solution, the larger the distance is, the larger the area of the input hole is, and the longer the distance from the gas ejected through the axial nozzle to entering the premixing hole is, so that the gas is easily removed through the input hole, reducing the amount of gas entering the premixing hole to mix with the air. On the contrary, the smaller the distance is, the smaller the area of the input hole is, and the area of the input hole is too small, reducing the amount of air entering the premixing hole through the input hole. Therefore, strictly controlling the size of C, making D1 ≤ C ≤ 4D1, can solve the above two problems, thus greatly improving the combustion effect.
[0025] Optionally, the conical opening angle between the inner side wall of the burner head and the axis of the burner head is A, 20° ≤ A ≤ 45°, and the angle between the axis of the radial nozzle and the axis of the burner head is B, B = A ± 5°.
[0026] By adopting the above technical solution, if the opening angle A is too large, the air and gas entering the burner head are easily removed, thus shortening the gas and air mixing time. On the contrary, it will reduce the size of the air passage and slow down the air input efficiency. Therefore, by controlling the size of the opening angle A, the above two problems can be solved, improving the gas mixing effect and the combustion effect.
[0027] The included angle between B and A is related to the angle. When the end of the radial nozzle close to the burner head is too close to the inner wall of the burner head, the gas ejected through the radial nozzle is likely to be ejected onto the inner wall of the burner head, and it also shortens the distance for the gas to be ejected through the radial nozzle, thereby reducing the blocking effect on the air ejected from the air nozzle, and thus reducing the gas mixing effect; or, when the end of the radial nozzle close to the burner head is too far from the inner wall of the burner head, the gas ejected through the radial nozzle is ejected away from the burner head, that is, on the side of the air nozzle, so it also reduces the blocking effect on the air ejected from the air nozzle, and thus reduces the gas mixing effect. Therefore, appropriately controlling the angle difference between B and A can improve the blocking effect on the air, thereby improving the gas mixing effect and the combustion effect.
[0028] Optionally, a plurality of air nozzles are arranged at intervals around the axis and radially of the burner head, and a plurality of flame stabilizing holes communicating with the outer wall of the burner head are formed around the axis of the larger diameter end of the burner head.
[0029] By adopting the above technical solution, the air is output through the flame stabilizing holes, so that the air surrounds the gas and air mixture output through the burner head, thereby achieving an encircling effect on the mixture, blocking the mixture from moving to the outside of the combustion point, and absorbing the gas when the oxygen content in the mixture is insufficient, so as to supplement the oxygen, thereby further improving the combustion effect.
[0030] Optionally, a flame stabilizing lip is coaxially arranged at the larger end of the burner head, and the inner diameter of the flame stabilizing lip is the same as the maximum inner diameter of the burner head and the outer diameter is the same as the outer diameter of the housing.
[0031] By adopting the above technical solution, the contact area between the flame stabilizing lip and the housing is increased, thereby increasing the stability of the burner head after installation.
[0032] Optionally, the difference between the outer diameter and the inner diameter of the flame stabilizing lip is F, and F = 3 - 15 mm.
[0033] In summary, the present application includes at least one of the following beneficial technical effects:
[0034] The air is conveyed into the burner head through a plurality of air nozzles, and the gas enters the burner head through a plurality of gas nozzles. The premixing assembly first guides the air to mix with the just ejected gas, and then the gas continues to move and mix with the air located in the burner head, thereby prolonging the gas mixing time. Finally, the mixed gas is ejected through the housing for ignition, thereby improving the combustion effect. Therefore, a gas burner with high adaptability is provided. BRIEF DESCRIPTION OF THE DRAWINGS
[0035] Figure 1 is a schematic cross-sectional view of the gas burner;
[0036] Figure 2 It is a schematic cross-sectional view of a gas burner, mainly showing D1, D2, A, and B.
[0037] Reference numerals: 1, housing; 11, air passage; 2, premixing structure; 21, burner head; 22, gas nozzle; 23, gas pipe; 24, flame stabilizing lip; 25, air nozzle; 26, flame stabilizing hole; 27, insertion slot; 28, gas groove; 3, premixing assembly; 31, connecting column; 32, premixing part; 33, premixing hole; 34, input hole; 4, gas nozzle; 41, axial nozzle; 42, radial nozzle. Specific embodiments
[0038] The following will Figure 1-2 make a further detailed description of this application in conjunction with the attached drawings.
[0039] The embodiments of this application disclose a highly adaptable gas burner.
[0040] Referring to Figure 1 , the highly adaptable gas burner includes a housing 1 and a premixing structure 2 provided on the housing 1. The premixing structure 2 is used to mix gas and air inside the housing 1 and then move it out of the housing 1 for combustion.
[0041] Referring to Figure 1 and Figure 2 , the premixing structure 2 includes a burner head 21, a gas nozzle 22, a gas pipe 23, and a premixing assembly 3. The burner head 21 is a conical housing 1 structure with a uniform thickness and is coaxially arranged with the housing 1. The conical angle between the inner side wall of the burner head 21 and the axis of the burner head 21 is A, where 20° ≤ A ≤ 45°, and more preferably A = 25°.
[0042] A flame stabilizing lip 24 is coaxially and fixedly installed at the larger-diameter end of the burner head 21. The inner diameter of the flame stabilizing lip 24 is the same as the maximum inner diameter of the burner head 21, and the outer diameter of the flame stabilizing lip 24 is the same as the inner diameter of the housing 1 and is larger than the maximum outer diameter of the burner head 21. The flame stabilizing lip 24 is fixedly connected to the housing 1 to achieve the fixed connection between the burner head 21 and the housing 1; the difference between the outer diameter size and the inner diameter size of the flame stabilizing lip 24 is F, where F = 3 - 15 mm, and the larger the outer diameter of the flame stabilizing lip 24, the larger the F value.
[0043] A plurality of air nozzles 25 are provided on the burner head 21 along its axial and radial directions, and a plurality of flame stabilizing holes 26 are circumferentially arranged around the axis of the burner head 21 at the larger-diameter end of the burner head 21. The flame stabilizing holes 26 penetrate the outer side walls of the burner head 21 and the flame stabilizing lip 24. The gas nozzle 22 is coaxially and fixedly installed at the end of the burner head 21 away from the flame stabilizing lip 24, and the outer diameter of the gas nozzle 22 is the same as the minimum outer diameter of the burner head 21; a plug-in slot 27 is coaxially opened at the end of the gas nozzle 22 facing away from the burner head 21, and a gas groove 28 is coaxially opened at the bottom of the plug-in slot 27.
[0044] A plurality of gas nozzles 4 are provided on the gas spray head 22. The gas nozzles 4 include a plurality of axial nozzles 41 and a plurality of radial nozzles 42. The plurality of axial nozzles 41 and the plurality of radial nozzles 42 are both arranged in a circumferential array around the axis of the gas spray head 22. And the plurality of radial nozzles 42 are located outside the plurality of axial nozzles 41 and are all communicated with the gas groove 28 and the inside of the combustion head 21. The axes of the axial nozzles 41 and the gas spray head 22 are parallel to each other. At the same time, the axes of the radial nozzles 42 are in an inclined state, and the distance between the end of the radial nozzle 42 close to the gas groove 28 and the axis of the gas spray head 22 is less than the distance between the end of the radial nozzle 42 close to the combustion head 21 and the axis of the gas spray head 22; the included angle between the axis of the radial nozzle 42 and the axis of the combustion head 21 is B, and B = A ± 5°. More preferably, the angles between B and A are the same.
[0045] One end of the gas pipe 23 is coaxially and fixedly installed on the insertion groove 27. The inner diameter of the gas pipe 23 is larger than the diameter of the gas groove 28 and is used for inputting gas; therefore, a air passage 11 for air to pass through is formed by the cooperation between the outer wall of the gas pipe 23 and the housing 1, and the air passage 11 is annular.
[0046] After passing through the air passage 11, the air sequentially passes through a plurality of air nozzles 25 and enters the combustion head 21. At the same time, after passing through the gas pipe 23, the gas sequentially passes through the gas groove 28 and a plurality of axial nozzles 41 and enters the combustion head 21 to be mixed with the air. At the same time, the gas enters the combustion head 21 through a plurality of radial nozzles 42. The gas contacts and mixes with the air entering through the air nozzles 25 and can block the air from moving towards the central position of the combustion head 21, that is, the axis. The gas and the air are mixed in the combustion head 21. When the mixing is uneven, different air pressure differences will be formed. Due to the principle of gas fluidity, the two gases can flow and mix in the combustion head 21. Finally, the mixed gas is output through the housing 1 for combustion. Moreover, after the air is output through the flame stabilizing holes 26, it can block the mixed gas at the combustion point, reducing the probability of the mixed gas overflowing. And when there is insufficient oxygen in the mixed gas, it can also absorb the air output through the flame stabilizing holes 26, thereby further improving the combustion effect.
[0047] The premixing structure 2 further includes a premixing component 3, which is arranged on the gas nozzle 22, and the premixing component 3 is used to guide the pre - mixing of air and gas and is located inside the burner head 21. The premixing component includes a connecting column 31 and a premixing member 32. The connecting column 31 is coaxially arranged at one end of the gas nozzle 22 near the inside of the burner head 21, and the connecting column 31 is located inside multiple axial nozzles 41; the premixing member 32 is coaxially and fixedly installed at one end of the connecting column 31 away from the gas nozzle 22, and multiple premixing holes 33 are circumferentially arrayed around the axis of the gas nozzle 22 on the premixing member 32. The multiple premixing holes 33 are arranged in one - to - one correspondence with the multiple axial nozzles 41, and the axes of the corresponding premixing holes 33 and axial nozzles 41 coincide; an input hole 34 for air to enter and communicate with the gas nozzle 4 and the premixing holes 33 is formed between the premixing member 32 and the gas nozzle 22, and the input hole 34 is annular.
[0048] The gas is sprayed into the premixing holes 33 through the axial nozzles 41, and the flow of the gas generates a suction force on the air located inside the burner head 21, causing the air to be sucked into the input hole 34 through the input hole 34 to be pre - mixed with the gas, thereby further improving the gas mixing effect.
[0049] The diameter of the gas nozzle 4 is D1 and the diameter of the premixing hole 33 is D2, D2≥D1. More preferably, D2 = 1.5D1, where 1.5D1 is 1.5 times D1; the distance between the axial nozzle 41 and the premixing hole 33 is C, and C is the width of the input hole 34. The size of C is closely related to the amount of air entering the premixing hole 33, and D1≤C≤4D1, where 4D1 is 4 times D1, and the larger the value of D1, the larger the value of C.
[0050] The working principle of the embodiment of this application is as follows:
[0051] Air enters the burner head 21 through the air nozzle 25, and the gas is ejected through the gas pipe 23 and the axial nozzles 41 into the premixing holes 33, causing the air inside the burner head 21 to be sucked into the premixing holes 33 through the input hole 34 to be mixed with the gas. The mixed gas enters the burner head 21 and moves forward and continues to be mixed with the air; at the same time, the gas enters the burner head 21 through the radial nozzles 42, and the gas is mixed with the air inside the burner head 21 and blocks the movement of the gas and air towards the center of the burner head 21. The gas and air flow and mix inside the burner head 21, thereby improving the gas mixing effect. Therefore, it can adapt to the combustion in a variety of different environmental states, improve the combustion effect, and thus provide a gas burner with high adaptability.
[0052] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.
Claims
1. A high-adaptability gas burner, characterized in that: Comprising a housing (1) and a premixing structure (2) provided on the housing (1), the premixing structure (2) includes: A burner head (21), which is conical and has its larger-diameter end disposed inside the housing (1) and is provided with a plurality of air nozzles (25); A gas nozzle (22), which is disposed at the other end of the burner head (21) and is provided with a plurality of gas nozzles (4); A gas pipe (23), which is disposed on the gas nozzle (22) and is located inside the housing (1). The gas pipe (23) is used for inputting gas and is in communication with the inside of the burner head (21) through the gas nozzles (4). An air passage (11) for air to pass through is formed between the gas pipe (23) and the inner side wall of the housing (1), and the air enters the burner head (21) through the air nozzles (25) and is mixed with the gas; A premixing assembly (3), which is disposed on the gas nozzle (22) and is used for guiding the premixing of air and gas.
2. The high - adaptability gas burner according to claim 1, wherein: The premixing assembly (3) is located inside the burner head (21), and the premixing assembly (3) includes: A connecting column (31), which is disposed at the end of the gas nozzle (22) close to the burner head (21); A premixing member (32), which is disposed on the connecting column (31) and is provided with a plurality of premixing holes (33) corresponding to the gas nozzles (4). An input hole (34) for air to enter and communicating with the gas nozzles (4) and the premixing holes (33) is formed between the premixing member (32) and the gas nozzle (22), so that the gas in the gas pipe (23) enters the burner head (21) through the gas nozzles (4) and the premixing holes (33), and the air located inside the burner head (21) is inhaled into the premixing holes (33) through the input hole (34).
3. The high-adaptability gas burner according to claim 2, wherein: The diameter of the gas nozzle (4) is D1 and the diameter of the premixing hole (33) is D2, and D2 ≥ D1.
4. The high-adaptability gas burner according to claim 3, wherein: The gas nozzle (4) includes a plurality of axial nozzles (41) and a plurality of radial nozzles (42). The plurality of axial nozzles (41) and the plurality of radial nozzles (42) are both arranged in a circumferential array around the axis of the gas nozzle (22). The plurality of radial nozzles (42) are located outside the plurality of axial nozzles (41) and are inclined away from the axis of the gas nozzle (22) at the end far from the gas pipe (23).
5. A highly adaptable gas burner according to claim 4, characterized in that: The plurality of axial nozzles (41) are arranged in one-to-one correspondence with the plurality of premixing holes (33) and their axes coincide, and D2 = 1.5D1.
6. The high-adaptability gas burner according to claim 5, characterized in that: The distance between the axial nozzle (41) and the premixing hole (33) is C, and D1 ≤ C ≤ 4D1.
7. A highly adaptable gas burner according to claim 4, characterized in that: The conical opening angle between the inner side wall of the burner head (21) and the axis of the burner head (21) is A, 20° ≤ A ≤ 45°, and the angle between the axis of the radial nozzle (42) and the axis of the burner head (21) is B, and B = A ± 5°.
8. The high-adaptability gas burner according to claim 1, characterized in that: The air nozzles (25) are arranged at intervals both around the axis and radially of the burner head (21). The larger-diameter end of the burner head (21) is provided with a plurality of flame stabilizing holes (26) communicating with the outer side wall of the burner head (21) around the axis of the burner head (21).
9. The high-adaptability gas burner according to claim 1, wherein: A flame stabilizing lip (24) is coaxially arranged at the larger end of the burner head (21), and the inner diameter of the flame stabilizing lip (24) is the same as the maximum inner diameter of the burner head (21), and the outer diameter of the flame stabilizing lip (24) is the same as the outer diameter of the housing (1).
10. A highly adaptable gas burner according to claim 9, characterized in that: The difference between the outer diameter and the inner diameter of the flame stabilizing lip (24) is F, and F = 3 - 15 mm.