A robust burner

Abstract

The utility model discloses a kind of stable combustion, including furnace head and fire divider, furnace head includes inner ejection pipe, outer ejection pipe and fixed frame, fire divider includes fire cover base, outer ring fire cover and center fire cover, the bottom surface of fire cover base is provided with positioning bracket, positioning bracket is provided with positioning notch, the inner edge of positioning notch is bent upwards to form extension flanging, positioning sleeve is penetrated and positioned in positioning notch, and with the inner side wall of positioning notch, extension flanging is contacted, positioning bracket is provided with mounting hole one and mounting hole two. The utility model is positioned by setting the positioning bracket with positioning notch and extension flanging in the bottom of fire cover base, so that positioning sleeve can be penetrated and positioned in notch, and closely contact with notch and extension flanging inner side wall, form multidirectional limiting structure, effectively enhance the connection stability between center fire cover and furnace head, prevent fire cover from deviating or loosening in use, improve the assembly precision, structural reliability and use safety of combustion.

Description

Technical Field

[0001] This utility model belongs to the field of burner technology, specifically relating to a stable burner. Background Technology

[0002] In gas stoves, the burner is a core component, and its structural stability and assembly precision directly affect combustion efficiency, safety performance, and user experience. Traditional burners typically consist of two main parts: the burner head and the flame distributor. The burner head is connected to the flame distributor via an injector tube to achieve gas distribution and combustion. However, in current technology, the connection between the flame distributor and the burner head often relies on simple splicing or gravity placement, lacking effective positioning and limiting structures. This can lead to issues such as burner cap misalignment, loosening, or unstable installation during use, thereby affecting combustion performance and safety. Utility Model Content

[0003] The purpose of this utility model is to solve the above-mentioned technical problems existing in the prior art and provide a stable burner with reasonable design and strong practicality. By setting a positioning frame with a positioning slot and an extended flange at the bottom of the burner cap base, the positioning sleeve can pass through and be confined in the slot, and make close contact with the inner side wall of the slot and the extended flange to form a multi-directional limiting structure. This effectively enhances the connection stability between the central burner cap and the burner head, prevents the burner cap from shifting or loosening during use, and improves the assembly accuracy, structural reliability and safety of use of the burner. At the same time, the positioning frame is integrated with mounting holes one and two for installing thermocouples and ignition needles, taking into account both functional integration and assembly convenience.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A stable burner includes a burner head and a flame distributor. The burner head includes an inner injector tube, an outer injector tube, and a mounting bracket. The flame distributor includes a flame cap base, an outer ring flame cap, and a central flame cap. A positioning sleeve is provided on the mounting bracket. The end of the inner injector tube passes through the mounting bracket and is inserted into the positioning sleeve. The central flame cap is inserted into the top of the positioning sleeve. A positioning frame is provided on the bottom surface of the flame cap base. Positioning plates are provided at both ends of the positioning frame. The positioning plates are fixed to the flame cap base with screws. A positioning groove is provided on the positioning frame. The inner edge of the positioning groove is bent upward to form an extended flange. The positioning sleeve passes through and is limited within the positioning groove, and contacts the inner sidewall of the positioning groove and the extended flange. The positioning frame is provided with mounting hole one and mounting hole two.

[0005] Furthermore, a liquid-collecting chamber is provided on the top surface of the central burner cap. The inner wall of the liquid-collecting chamber is inclined towards the center of the chamber and converges, while the outer wall of the chamber is provided with an arc-shaped liquid guiding surface. The liquid-collecting chamber can collect droplets dripping from the bottom of the pot, preventing the droplets from falling directly into the combustion zone. The inclined converging design of the inner wall guides the liquid flow to the lowest point in the center, facilitating evaporation or centralized cleaning. Overflowing liquid can also be smoothly guided and fall freely along the arc-shaped liquid guiding surface, thereby preventing overflow from splashing and flowing everywhere, and improving the safety of the burner.

[0006] Furthermore, limit rings are provided on the outer walls of both the outer and inner ejector tubes. The limit rings abut against and limit the bottom surface of the fixing frame. The design of the limit rings facilitates the installation and positioning of the ejector tubes and effectively prevents excessive insertion or loosening of the ejector tubes during installation and use.

[0007] Furthermore, a limiting bracket is fixed to the lower part of the fixed frame with screws. The limiting bracket has an opening groove, which limits and engages with the outer wall of the outer ejector tube. The limiting bracket also has an arc-shaped groove that communicates with the opening groove, forming a limiting arc groove between the limiting bracket and the fixed frame. The limiting ring on the outer ejector tube is locked in the limiting arc groove. The screws fixing the limiting bracket and the fixed frame ensure a firm installation connection and facilitate actual assembly and disassembly. The limiting bracket can be quickly inserted and installed through the opening groove. The arc-shaped groove cooperates with the fixed frame to form a limiting arc groove, which allows the limiting ring on the outer ejector tube to be reliably locked and limited within it. This achieves dual constraint on the outer ejector tube in both radial and axial directions, enhancing the overall structural rigidity and vibration resistance of the furnace head.

[0008] Furthermore, the fixed frame is provided with stepped holes, the limiting bracket is provided with an auxiliary plate, and the auxiliary plate is provided with a through hole. The mounting hole, the stepped hole, and the through hole are aligned vertically. The stepped hole, the through hole, and the mounting hole form a through installation channel, which facilitates the thermocouple to pass through the positioning frame, the fixed frame, and the limiting bracket in sequence from the bottom of the distributor, so as to achieve accurate positioning and stable installation. The stepped hole can also provide an axial positioning reference to prevent the components from sinking or shifting.

[0009] Furthermore, the mounting bracket is provided with a second through hole, which corresponds vertically to the second mounting hole and is aligned with the second mounting hole, providing a precise alignment path for the ignition needle and simplifying the assembly process.

[0010] Furthermore, a guide plate is installed in the outer ring gas outlet chamber of the burner cap base. The guide plate is located above the outlet end of the outer ejector tube and has guide holes. The guide plate has three inclined sections arranged sequentially from the center outwards. Inclined sections one, two, and three are connected by arc sections between inclined sections one and two, and between inclined sections two and three. The height of inclined sections one, two, and three decreases step by step, and they are all inclined downwards along the center of the guide plate. The multi-stage inclined sections, together with the guide holes, optimize the gas flow path, which can evenly distribute the gas-air mixture ejected from the outer ejector tube and guide it to various areas of the outer ring burner cap, avoiding airflow concentration or eddies. The design of gradually decreasing height creates a pressure gradient, which promotes the outward diffusion of gas, making the outer ring flame distribution more uniform and the combustion more complete, improving thermal efficiency and reducing yellow flame or flame lift-off.

[0011] Furthermore, support feet are provided at both ends of the guide vane. The support feet are fixedly connected to the outer ring air outlet chamber, providing a solid support point for the guide vane. The symmetrical arrangement at both ends ensures force balance and improves structural reliability.

[0012] Furthermore, a positioning plate is welded and fixed inside the outer ring air outlet chamber. The positioning plate is provided with a slot, so that a limiting slot is formed between the positioning plate and the bottom surface of the outer ring air outlet chamber. The horizontal section of the support foot is inserted and limited in the limiting slot. The welded and fixed positioning plate has a solid structure, ensuring that it will not loosen during long-term use and ensuring the installation position accuracy of the guide plate. The limiting slot enables quick positioning and limiting installation of the support foot, making assembly simple and reliable.

[0013] Furthermore, a positioning post is provided on the horizontal section of the support foot, and a limiting groove is provided on the positioning plate. The positioning post is matched and snapped into the limiting groove, and the top of the positioning post extends to the top of the positioning plate and connects with the fastening nut. The positioning post and the limiting groove cooperate and are locked from above by the fastening nut, realizing the rapid pre-positioning and firm locking of the guide plate, forming a detachable rigid connection structure, which facilitates the maintenance and replacement of the guide plate. At the same time, the limiting groove has a certain length, allowing the positioning post to make a small displacement in the direction of thermal expansion, effectively releasing the thermal stress caused by high temperature, and avoiding cracking of the component due to thermal deformation or stress concentration. It takes into account the assembly flexibility, structural stability and thermal adaptability.

[0014] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects: This utility model has a reasonable design and strong practicality. By setting a positioning frame with a positioning slot and an extended flange at the bottom of the burner cap base, the positioning sleeve can pass through and be confined in the slot, and make close contact with the inner side wall of the slot and the extended flange to form a multi-directional limiting structure. This effectively enhances the connection stability between the central burner cap and the burner head, prevents the burner cap from shifting or loosening during use, and improves the assembly accuracy, structural reliability and safety of the burner. At the same time, the positioning frame is integrated with mounting holes one and two for installing thermocouples and ignition needles, taking into account both functional integration and assembly convenience. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model; Figure 2 for Figure 1 A schematic diagram of the top surface structure; Figure 3 for Figure 1 A schematic diagram of the bottom structure; Figure 4 This is a schematic diagram of the internal cross-sectional structure of Embodiment 1 of this utility model; Figure 5 This is a schematic diagram of the fire distributor in Embodiment 1 of this utility model; Figure 6 This is a schematic diagram of the installation position of the guide plate in the outer ring air outlet chamber in Embodiment 1 of this utility model; Figure 7 This is a schematic diagram of the flow guide plate in Embodiment 1 of this utility model; Figure 8 for Figure 7 A structural diagram from another perspective; Figure 9 This is a schematic diagram of the structure of the central flame cap in Embodiment 1 of this utility model; Figure 10 This is a schematic diagram of the fixing frame in Embodiment 1 of this utility model; Figure 11 for Figure 10 A structural diagram from another perspective; Figure 12 This is a schematic diagram of the limiting bracket in Embodiment 1 of this utility model; Figure 13 This is a schematic diagram of the positional distribution of the limiting ring on the ejector tube in Embodiment 1 of this utility model; Figure 14 This is a schematic diagram of the installation structure of the fixing plate in the outer ring air outlet chamber in Embodiment 2 of this utility model; Figure 15This is a schematic diagram of the support foot being inserted and limited within the limiting slot in Embodiment 2 of this utility model.

[0016] In the diagram: 1-Furnace head; 2-Inner ejector tube; 3-Outer ejector tube; 4-Fixing bracket; 5-Flame distributor; 6-Flame cap base; 7-Outer ring flame cap; 8-Center flame cap; 9-Positioning sleeve; 10-Positioning bracket; 11-Positioning plate; 12-Positioning slot; 13-Extension flange; 14-Mounting hole one; 15-Mounting hole two; 16-Liquid chamber; 17-Arc-shaped liquid guiding surface; 18-Limiting ring; 19-Limiting bracket; 20-Opening slot; 21 21-Arc-shaped groove; 22-Limiting arc groove; 23-Stepped hole; 24-Auxiliary piece; 25-Through hole one; 26-Through hole two; 27-Outer ring exhaust chamber; 28-Guide plate; 29-Guide hole; 30-Sloping section one; 31-Sloping section two; 32-Sloping section three; 33-Circular arc section; 34-Support foot; 35-Fixing plate; 36-Slot; 37-Limiting slot; 38-Positioning post; 39-Limiting slide groove; 40-Fastening nut. Detailed Implementation

[0017] like Figures 1 to 13 As shown, this is Embodiment 1 of the present invention. The present invention discloses a stable burner, including a burner head 1 and a flame distributor 5. The burner head 1 includes an inner ejector tube 2, an outer ejector tube 3, and a fixing frame 4. The flame distributor 5 includes a flame cap base 6, an outer ring flame cap 7, and a central flame cap 8. A positioning sleeve 9 is provided on the fixing frame 4. The end of the inner ejector tube 2 passes through the fixing frame 4 and is inserted into the positioning sleeve 9. The central flame cap 8 is inserted into the top of the positioning sleeve 9. A positioning frame 10 is provided on the bottom surface of the flame cap base 6. Positioning pieces 11 are provided at both ends of the positioning frame 10. The positioning pieces 11 are fixed to the flame cap base 6 with screws. A positioning groove 12 is provided on the positioning frame 10. The inner edge of the positioning groove 12 is bent upward to form an extended flange 13. The positioning sleeve 9 passes through and is limited in the positioning groove 12, and contacts the inner sidewall of the positioning groove 12 and the extended flange 13. The positioning frame 10 is provided with a first mounting hole 14 and a second mounting hole 15.

[0018] The top surface of the central burner cap 8 is provided with a liquid-collecting chamber 16. The inner wall of the liquid-collecting chamber 16 is inclined and converges towards the center of the liquid-collecting chamber 16. The outer wall of the liquid-collecting chamber 16 is provided with an arc-shaped liquid guiding surface 17. The liquid-collecting chamber 16 can collect the liquid droplets dripping from the bottom of the pot, preventing the droplets from falling directly into the combustion area. The inclined converging design of the inner wall guides the liquid flow to the lowest point in the center, which is convenient for evaporation or centralized cleaning. The overflowing liquid can also be smoothly guided and fall freely along the arc-shaped liquid guiding surface 17, thereby preventing the overflow from splashing and flowing everywhere, and improving the safety of the burner.

[0019] Limiting rings 18 are provided on the outer walls of both the outer ejector tube 3 and the inner ejector tube 2. The limiting rings 18 abut against and limit the bottom surface of the fixing frame 4. The design of the limiting rings 18 can facilitate the installation and positioning of the ejector tubes and effectively prevent the ejector tubes from being excessively inserted or loosened during installation and use.

[0020] A limiting bracket 19 is fixed to the lower part of the fixed frame 4 by screws. The limiting bracket 19 is provided with an opening groove 20. The limiting bracket 19 is limited and locked to the outer wall of the outer ejector tube 3 through the opening groove 20. The limiting bracket 19 is provided with an arc-shaped groove 21 that communicates with the opening groove 20, so that the limiting bracket 19 and the fixed frame 4 form a limiting arc groove 22. The limiting ring 18 on the outer ejector tube 3 is limited and locked in the limiting arc groove 22. The screw fixing of the limiting bracket 19 and the fixed frame 4 ensures the firmness of the installation connection and facilitates actual disassembly and assembly. The limiting bracket 19 can be quickly inserted and installed through the opening groove 20. The arc-shaped groove 21 cooperates with the fixed frame 4 to form the limiting arc groove 22, so that the limiting ring 18 on the outer ejector tube 3 can be reliably locked and limited in it, realizing dual constraint on the outer ejector tube 3 in the radial and axial directions, and enhancing the overall structural rigidity and vibration resistance of the furnace head 1.

[0021] The fixed bracket 4 is provided with a stepped hole 23, and the limiting bracket 19 is provided with an auxiliary piece 24. The auxiliary piece 24 is provided with a through hole 25. The mounting hole 14, the stepped hole 23, and the through hole 25 correspond vertically. The stepped hole 23, the through hole 25, and the mounting hole 14 form a through installation channel, which facilitates the thermocouple to pass through the positioning bracket 10, the fixed bracket 4, and the limiting bracket 19 sequentially from the bottom of the igniter 5, achieving precise positioning and stable installation. The stepped hole 23 can also provide an axial positioning reference to prevent the component from sinking or shifting. The fixed bracket 4 is provided with a second through hole 26, which corresponds vertically to the second mounting hole 15. The second through hole 26 and the second mounting hole 15 are aligned to provide a precise centering installation path for the ignition needle and simplify the assembly process.

[0022] A guide plate 28 is provided inside the outer ring exhaust chamber 27 of the burner base 6. The guide plate 28 is located above the outlet end of the outer ejector tube 3. The guide plate 28 is provided with guide holes 29. From the center outward, the guide plate 28 is provided with inclined section 1 30, inclined section 2 31 and inclined section 32. The inclined section 1 30 and inclined section 2 31, and the inclined section 2 31 and inclined section 32 are connected by arc section 33. The height of the inclined section 1 30, inclined section 2 31 and inclined section 32 decreases step by step. Furthermore, the inclined sections 30, 31, and 32 are all inclined downwards outwards from the center of the guide plate 28. These multi-stage inclined sections, combined with the guide holes 29, optimize the gas flow path, evenly distributing the gas-air mixture ejected from the outer injector 3 and guiding it to various areas of the outer ring flame cap 7. This avoids concentrated airflow or eddies. The progressively decreasing height creates a pressure gradient, promoting outward gas diffusion, resulting in a more uniform outer ring flame distribution, more complete combustion, improved thermal efficiency, and reduced yellow flame or flame lift-off phenomena. Both ends of the guide plate 28 are equipped with support feet 34, which are fixedly connected to the outer ring exhaust chamber 27. The support feet 34 provide a solid support point for the guide plate 28, and their symmetrical arrangement at both ends ensures force balance and improves structural reliability.

[0023] like Figure 14 and Figure 15 The above describes a second embodiment of the present invention, which, based on the first embodiment, further describes the method of fixing the guide plate 28 within the outer ring exhaust chamber 27. A positioning plate 35 is welded and fixed within the outer ring exhaust chamber 27. The positioning plate 35 has a slot 36, forming a limiting slot 37 between the positioning plate 35 and the bottom surface of the outer ring exhaust chamber 27. The horizontal section of the support foot 34 is inserted and limited within the limiting slot 37. The welded and fixed positioning plate 35 has a robust structure, ensuring that it will not loosen during long-term use and guaranteeing the installation position accuracy of the guide plate 28. The limiting slot 37 enables quick positioning and limiting installation of the support foot 34, making assembly simple and reliable.

[0024] A positioning post 38 is provided on the horizontal section of the support foot 34, and a limiting groove 39 is provided on the positioning plate 35. The positioning post 38 is matched and snapped into the limiting groove 39, and the top of the positioning post 38 extends to the top of the positioning plate 35 and connects with the fastening nut 40. The positioning post 38 and the limiting groove 39 cooperate and are locked from above by the fastening nut 40, realizing the quick pre-positioning and firm locking of the guide plate 28, forming a detachable rigid connection structure, which facilitates the maintenance and replacement of the guide plate 28. At the same time, the limiting groove 39 has a certain length, allowing the positioning post 38 to produce a small displacement in the direction of thermal expansion, effectively releasing the thermal stress caused by high temperature, and avoiding cracking of the component due to thermal deformation or stress concentration. It takes into account the assembly flexibility, structural stability and thermal adaptability.

[0025] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A robust burner, comprising: A furnace head, comprising an inner ejector tube, an outer ejector tube, and a mounting bracket; Flame distributor, the flame distributor includes a flame cap base, an outer ring flame cap and a central flame cap; The fixing frame is provided with a positioning sleeve, the end of the inner ejector tube passes through the fixing frame and is inserted into the positioning sleeve, and the center flame cap is inserted into the top of the positioning sleeve; Its features are: A positioning frame is provided on the bottom surface of the flame cap base, and positioning plates are provided at both ends of the positioning frame. The positioning plates are fixed to the flame cap base with screws. The positioning frame is provided with a positioning slot, the inner edge of the positioning slot is bent upward to form an extended flange, the positioning sleeve is inserted and limited in the positioning slot, and contacts the inner sidewall of the positioning slot and the extended flange; The positioning frame is provided with mounting hole one and mounting hole two.

2. A stable burner according to claim 1, characterized in that: The top surface of the central flame cap is provided with a liquid-holding cavity, the inner wall of the liquid-holding cavity is inclined and converges towards the center of the liquid-holding cavity, and the outer wall of the liquid-holding cavity is provided with an arc-shaped liquid-guiding surface.

3. A stable burner according to claim 1, characterized in that: Limiting rings are provided on the outer walls of both the outer ejector tube and the inner ejector tube, and the limiting rings abut against and limit the bottom surface of the fixing frame.

4. A stable burner according to claim 3, characterized in that: A limiting bracket is fixed to the lower part of the fixing frame by screws. The limiting bracket is provided with an opening groove. The limiting bracket is limited and locked to the outer wall of the outer ejector tube through the opening groove. The limiting bracket is also provided with an arc-shaped groove communicating with the opening groove, so that a limiting arc groove is formed between the limiting bracket and the fixing frame. The limiting ring on the outer ejector tube is limited and locked in the limiting arc groove.

5. A stable burner according to claim 4, characterized in that: The fixing frame is provided with a stepped hole, the limiting bracket is provided with an auxiliary piece, and the auxiliary piece is provided with a through hole. The mounting hole, the stepped hole, and the through hole are vertically aligned.

6. A stable burner according to claim 1, characterized in that: The fixing frame is provided with a second through hole, which corresponds vertically to the second mounting hole.

7. A stable burner according to claim 1, characterized in that: A guide plate is provided in the outer ring outlet chamber of the flame cap base. The guide plate is located above the outlet end of the external ejector tube. The guide plate is provided with guide holes. The guide plate is provided with inclined section one, inclined section two and inclined section three in sequence from the center to the outside. The inclined section one and the inclined section two, and the inclined section two and the inclined section three are connected by arc sections. The height of the inclined section one, the inclined section two and the inclined section three decreases step by step, and the inclined section one, the inclined section two and the inclined section three are all inclined downwards and outwards from the center of the guide plate.

8. A stable burner according to claim 7, characterized in that: Both ends of the guide plate are provided with support feet, which are fixedly connected to the outer ring air outlet chamber.

9. A stable burner according to claim 8, characterized in that: A positioning plate is welded and fixed inside the outer ring air outlet chamber. The positioning plate is provided with a slot, so that a limiting slot is formed between the positioning plate and the bottom surface of the outer ring air outlet chamber. The horizontal section of the support leg is inserted and limited in the limiting slot.

10. A stable burner according to claim 9, characterized in that: A positioning post is provided on the horizontal section of the support leg, and a limiting groove is provided on the positioning plate. The positioning post is matched and snapped into the limiting groove, and the top of the positioning post extends to the top of the positioning plate and is connected to the fastening nut.

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