A non-backfire porous burner
By incorporating components such as a cooling jacket, a cold water tank, and a stirring mechanism into the burner, effective heat dissipation of the mixing chamber is achieved, preventing backfire and improving the safety and stability of the burner, thus solving the problem of burner backfire.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN CHANGTIANFURUIDA TECH
- Filing Date
- 2025-07-12
- Publication Date
- 2026-06-26
AI Technical Summary
The existing burner's gas mixing zone is too close to the combustion zone, which leads to increased temperature and a tendency for backfire, affecting operational safety.
A multi-hole burner with backfire prevention was designed, which uses components such as a cooling jacket, a cold water tank, a hot water pump, and a stirring mechanism. The temperature of the mixing chamber is reduced by circulating cooling water, and combined with components such as multi-hole nozzles and check valves, backfire is prevented.
It effectively prevents backfire, improves the safety and stability of the burner, enhances cooling efficiency, reduces safety hazards, and increases the convenience of equipment maintenance.
Smart Images
Figure CN224415152U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of burner technology, and in particular relates to a multi-hole burner with backfire prevention. Background Technology
[0002] A burner is a device that mixes fuel (such as gas, oil, or pulverized coal) with air in a specific ratio and then sprays it out for combustion. Its core function is to convert substances into heat energy through a combustion chemical reaction. When using existing burners, it is necessary to first mix the combustion gas and the combustion-supporting gas, and then discharge the mixed gas for combustion. Since the gas mixing area is close to the combustion area, the temperature of the gas mixing area continues to rise as the burner is used. When the temperature rises to the ignition point of the gas, backfire will occur, affecting the safety of the burner. Utility Model Content
[0003] This invention provides a multi-hole burner to prevent backfire, aiming to solve the problem mentioned in the background art that the gas mixing zone and combustion zone of existing burners are too close, and backfire is prone to occur after the temperature of the gas mixing zone rises.
[0004] To solve the above problems, this utility model is implemented as follows: a backfire-proof porous burner includes: a base; a burner body installed on top of the base, the burner body having a mixing chamber for providing space for mixing combustible gas and combustion-supporting gas; a cooling sleeve fitted inside and outside the mixing chamber to provide drainage channels to assist in heat dissipation of the mixing chamber; a cold water tank fixed on top of the base for storing cold water, the cold water tank having a hot water pump for drawing cooling water, the discharge end of the hot water pump having an inlet pipe extending into the cooling sleeve; a drain pipe installed at the bottom of the cooling sleeve extending into the cold water tank; and a stirring mechanism installed on the cold water tank for assisting in cooling the water.
[0005] Preferably, the stirring mechanism includes a stirring rod rotatably mounted inside the cold water tank, the stirring rod having stirring blades, a connecting shaft rotatably mounted on the cold water tank, bevel gears fixed to the stirring rod and the connecting shaft respectively and meshing with each other for transmission, and a servo motor mounted on the base for driving the connecting shaft to rotate, the output shaft of the servo motor being connected to the connecting shaft.
[0006] Preferably, a protective shell is fixed inside the cold water tank, which is sleeved on the bevel gear to isolate the bevel gear transmission environment, and the stirring rod and the connecting shaft are rotatably connected to the protective shell.
[0007] Preferably, a fixing frame is fixed inside the cold water tank, and the stirring rod is rotatably connected to the fixing frame. The fixing frame is used to stabilize the stirring rod and is cross-shaped.
[0008] Preferably, the mixing chamber is connected to a flange with a multi-hole nozzle for assisting in preventing backfire. The multi-hole nozzle is made of ceramic material, and a vent is provided on one side of the cold water tank for assisting in cooling the water.
[0009] Preferably, an extension shell is fixed to the outer wall of the cold water tank and fitted outside the vent. The extension shell is used to prevent leakage. The top of the extension shell is provided with an opening. A drain pipe for discharging cooling water is provided on one side of the cold water tank. A valve is provided on the drain pipe.
[0010] Preferably, the burner body is provided with a gas pipe for introducing combustion gas and a vent pipe for introducing combustion-supporting gas, and both the gas pipe and the vent pipe are provided with check valves to prevent gas backflow.
[0011] Compared with related technologies, the backfire-proof porous burner provided by this utility model has the following beneficial effects:
[0012] Compared with existing technologies, the backfire-proof multi-hole burner provided by this solution achieves effective heat dissipation of the mixing chamber by setting up components such as a cooling jacket, cold water tank, hot water pump, and stirring mechanism, preventing backfire caused by excessive temperature and improving the safety of burner operation. The continuous low temperature of the mixing chamber is ensured by circulating cold water for cooling, further enhancing the backfire prevention effect. The stirring mechanism ensures uniform heat dissipation of cooling water, improving cooling efficiency and ensuring long-term stable operation of the burner. At the same time, by setting up components such as protective shell, fixing frame, multi-hole nozzle, extension shell, drain pipe, controller, alarm, and check valves on gas pipe and vent pipe, the safety and maintenance convenience of the burner are further improved, reducing the safety hazards caused by backfire. Attached Figure Description
[0013] Figure 1 This is a front sectional view of a multi-hole burner for preventing backfire provided by this utility model;
[0014] Figure 2 This is a rear view structural diagram of the intermediate cooling water tank of this utility model;
[0015] Figure 3 This is a schematic diagram of the assembly structure of the stirring mechanism in this utility model;
[0016] Figure 4 This is a schematic diagram of the front sectional view of the cooling water tank of this utility model.
[0017] Reference numerals in the attached diagram: 1. Base; 2. Burner body; 3. Mixing chamber; 4. Multi-hole nozzle; 5. Cooling jacket; 6. Cold water tank; 7. Liquid inlet pipe; 8. Liquid outlet pipe; 9. Vent; 10. Extension shell; 11. Stirring rod; 12. Stirring blade; 13. Fixing frame; 14. Connecting shaft; 15. Servo motor; 16. Bevel gear; 17. Protective shell; 18. Controller; 19. Alarm; 20. Hot water pump. Detailed Implementation
[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings are used to distinguish different objects, not to describe a particular order; the terms "inner," "outer," "left," and "right" indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.
[0019] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0020] This utility model embodiment provides a backfire-proof porous burner, such as... Figure 1-4 As shown, the backfire-proof porous burner includes: a base 1; a burner body 2 mounted on top of the base 1, the burner body 2 having a mixing chamber 3 for providing space for mixing combustible gas and combustion-supporting gas; a cooling sleeve 5 fitted inside and outside the mixing chamber 3 to provide drainage channels to assist in heat dissipation of the mixing chamber 3; a cold water tank 6 fixed on top of the base 1 for storing cold water, the cold water tank 6 having a hot water pump 20 for drawing cooling water, the discharge end of the hot water pump 20 being fitted with an inlet pipe 7 extending into the cooling sleeve 5; a drain pipe 8 mounted on the bottom of the cooling sleeve 5 extending into the cold water tank 6; and a stirring mechanism mounted on the cold water tank 6 to assist in cooling the cooling water.
[0021] In this embodiment, by setting up a cooling jacket 5, a drainage channel is provided for the mixing chamber 3 to assist in heat dissipation, effectively reducing the temperature of the mixing chamber 3 and preventing backfire due to excessively high temperature reaching the gas ignition point. This improves the safety of the burner body 2 (Riello series: such as RS series, GS series, FS series). By setting up a cold water tank 6, a hot water pump 20 (IRG type vertical hot water pump), an inlet pipe 7, and a drain pipe 8, cold water is circulated to cool the cooling jacket 5, continuously maintaining the low temperature of the mixing chamber 3 and further enhancing the backfire prevention effect. By setting up a stirring mechanism, the cooling water in the cold water tank 6 can dissipate heat evenly, improving cooling efficiency and ensuring the continuous cooling capacity of the cooling water. This ensures the long-term stable operation of the burner, reduces safety hazards caused by backfire, and improves the overall performance and reliability of the burner.
[0022] In a further preferred embodiment of the present invention, the stirring mechanism includes a stirring rod 11 rotatably mounted in the cold water tank 6, a stirring blade 12 provided on the stirring rod 11, a connecting shaft 14 rotatably mounted on the cold water tank 6, a bevel gear 16 fixed to the stirring rod 11 and the connecting shaft 14 respectively and meshing with each other for transmission, and a servo motor 15 mounted on the base 1 for driving the connecting shaft 14 to rotate, the output shaft of the servo motor 15 being connected to the connecting shaft 14.
[0023] In this embodiment, by setting the stirring rod 11 and stirring blade 12, the cooling water in the cold water tank 6 is fully stirred, ensuring uniform cooling water temperature and improving cooling efficiency. By setting the connecting shaft 14, bevel gear 16 and servo motor 15 (Siemens 1FT7 servo motor), the power transmission and conversion functions are achieved, enabling the servo motor 15 to drive the stirring rod 11 to rotate, realizing automated stirring. Through the coordinated work of this series of components, the cooling water in the cold water tank 6 can continuously and effectively provide cooling for the cooling jacket 5, thereby ensuring the low temperature state of the mixing chamber 3, further preventing backfire, and improving the safety performance and operational stability of the burner.
[0024] In a further preferred embodiment of the present invention, a protective shell 17 is fixed inside the cold water tank 6, which is sleeved on the bevel gear 16 to isolate the transmission environment of the bevel gear 16, and the stirring rod 11 and the connecting shaft 14 are rotatably connected to the protective shell 17.
[0025] In this embodiment, by setting the protective shell 17, the transmission environment of the bevel gear 16 is isolated, effectively preventing water or other impurities in the cold water tank 6 from entering the transmission area of the bevel gear 16, avoiding transmission failure or wear caused by impurities, thereby improving the reliability and stability of the transmission. At the same time, the protective shell 17 also plays a supporting and positioning role, so that the stirring rod 11 and the connecting shaft 14 can be stably rotated and connected to it, ensuring the normal operation of the stirring mechanism. This not only extends the service life of transmission components such as the bevel gear 16, but also reduces maintenance costs and improves the operating efficiency and safety of the entire burner.
[0026] In a further preferred embodiment of the present invention, a fixing frame 13 is fixed inside the cold water tank 6, the stirring rod 11 is rotatably connected to the fixing frame 13, the fixing frame 13 is used to stabilize the stirring rod 11, and the fixing frame 13 is cross-shaped.
[0027] In this embodiment, by setting the fixing frame 13, the stirring rod 11 is stabilized. The fixing frame 13 is rotatably connected to the stirring rod 11, providing reliable support for the stirring rod 11, making the stirring rod 11 more stable during rotation, reducing the risk of uneven stirring or equipment damage caused by shaking or deviation. At the same time, the fixing frame 13 is designed in a cross shape. This structure not only enhances the stability of the fixing frame 13 itself, but also expands the contact area with the inner wall of the cold water tank 6, further improving the stability of the stirring rod 11.
[0028] In a further preferred embodiment of this utility model, the upper flange of the mixing chamber 3 is connected to a multi-hole nozzle 4 for assisting in preventing backfire. The multi-hole nozzle 4 is made of ceramic material. A vent 9 for assisting in cooling water dissipation is provided on one side of the cold water tank 6.
[0029] In this embodiment, the use of a multi-hole nozzle 4 achieves the effect of assisting in preventing backfire. The design of the multi-hole nozzle 4 allows the mixed gas to be more dispersed when it is ejected, reducing the probability of the formation of local high-temperature areas, thereby effectively preventing backfire. At the same time, the multi-hole nozzle 4 is made of ceramic material, which has the characteristics of high temperature resistance and corrosion resistance, and can work stably for a long time in high-temperature environments, further improving the safety and reliability of the burner. By setting a vent 9 on one side of the cold water tank 6, it plays a role in assisting the cooling water to dissipate heat. The vent 9 can promote the air circulation inside and outside the cold water tank 6, accelerate the heat dissipation process of the cooling water, and thus ensure the cooling effect of the cooling water.
[0030] In a further preferred embodiment of the present invention, an extension shell 10 is fixed on the outer wall of the cold water tank 6 and sleeved outside the vent 9. The extension shell 10 is used to prevent leakage. The top of the extension shell 10 is provided with an opening. A drain pipe for discharging cooling water is provided on one side of the cold water tank 6. A valve is provided on the drain pipe.
[0031] In this embodiment, the extension shell 10 achieves the effect of preventing liquid leakage. The extension shell 10 is fitted outside the vent 9, which can effectively prevent liquid leakage caused by liquid splashing or condensation dripping during ventilation or heat dissipation, ensuring the dryness and cleanliness of the environment around the cold water tank 6. At the same time, the top of the extension shell 10 has an opening, which does not hinder the normal function of the vent 9 and facilitates observation and maintenance. In addition, by setting a drain pipe and valve on one side of the cold water tank 6, the cooling water can be discharged conveniently. When it is necessary to clean or replace the cooling water, simply open the valve to discharge the water through the drain pipe. The operation is simple and quick, improving the efficiency of equipment maintenance.
[0032] In a further preferred embodiment of this utility model, a controller 18 for adjusting the start and stop of the servo motor 15 and the hot water pump 20 is fixed on the cold water tank 6. The controller 18 is equipped with an alarm 19 for warning that the temperature of the cooling water is too high. The controller 18 is equipped with a temperature sensor for monitoring the temperature of the cooling water.
[0033] In this embodiment, by setting up a controller 18 (PLC controller), the intelligent control of the servo motor 15 and the hot water pump 20 is achieved. It can automatically adjust the operation of the cooling system according to actual needs, improve energy utilization efficiency, and reduce unnecessary energy consumption. At the same time, the controller 18 is equipped with an alarm 19, which plays a role in real-time monitoring and warning of excessively high cooling water temperature. When the temperature exceeds the safety threshold, the alarm 19 (LTE-1101J) will issue an alarm in time to remind the operator to take appropriate measures, effectively avoiding problems such as reduced cooling effect or equipment damage caused by excessively high water temperature. The temperature sensor (DS18B20) can accurately monitor the temperature of the cooling water, providing accurate data support for intelligent control.
[0034] In a further preferred embodiment of the present invention, the burner body 2 is provided with a gas pipe for introducing combustion gas and a vent pipe for introducing combustion-supporting gas, and both the gas pipe and the vent pipe are provided with check valves to prevent gas backflow.
[0035] In this embodiment, by setting up a gas pipe and a vent pipe, the combustion gas and combustion-supporting gas are introduced respectively, providing a stable gas supply to the burner body 2 and ensuring the smooth progress of the combustion process. At the same time, check valves are set on both the gas pipe and the vent pipe, which play an important role in preventing gas backflow. The check valves can effectively prevent the combustion gas or combustion-supporting gas from flowing back in the pipeline, avoiding safety hazards caused by gas backflow, such as explosions or equipment damage.
[0036] In summary, compared with related technologies, this device, by incorporating components such as a cooling jacket 5, a cold water tank 6, a hot water pump 20, and a stirring mechanism, effectively dissipates heat from the mixing chamber 3, preventing backfire caused by excessive temperature and improving the burner's operational safety. The continuous low temperature of the mixing chamber 3 is ensured through circulating cold water cooling, further enhancing the backfire prevention effect. The stirring mechanism ensures uniform heat dissipation of the cooling water, improving cooling efficiency and ensuring long-term stable operation of the burner. Furthermore, the inclusion of components such as a protective shell 17, a fixing bracket 13, a multi-hole nozzle 4, an extension shell 10, a drain pipe, a controller 18, an alarm 19, and check valves on the gas pipe and vent pipe further improves the burner's safety and ease of maintenance, reducing safety hazards caused by backfire.
[0037] It should be understood, in the several embodiments provided in this application, that the disclosed apparatus may be implemented in other ways.
[0038] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.
Claims
1. A multi-hole burner with backfire prevention, characterized in that, include: Base (1); A burner body (2) is installed on top of the base (1), and the burner body (2) is provided with a mixing chamber (3) for providing space for mixing combustible gas and combustion-supporting gas. Cooling sleeve (5) is installed inside and outside the mixing chamber (3) to provide drainage channels to assist the mixing chamber (3) in dissipating heat. A cold water tank (6) is fixed on the top of the base (1) for storing cold water. A hot water pump (20) for drawing cooling water is provided in the cold water tank (6). The discharge end of the hot water pump (20) is equipped with an inlet pipe (7) extending into the cooling sleeve (5). A drain pipe (8) extending into the cold water tank (6) is provided at the bottom of the cooling sleeve (5). A stirring mechanism is installed on the cold water tank (6) to assist in cooling the water.
2. The backfire-preventing porous burner as described in claim 1, characterized in that, The stirring mechanism includes a stirring rod (11) rotatably mounted in the cold water tank (6), a stirring blade (12) on the stirring rod (11), a connecting shaft (14) rotatably mounted on the cold water tank (6), a bevel gear (16) fixed on the stirring rod (11) and the connecting shaft (14) respectively and meshing with each other for transmission, and a servo motor (15) mounted on the base (1) for driving the connecting shaft (14) to rotate, the output shaft of the servo motor (15) being connected to the connecting shaft (14).
3. The backfire-preventing porous burner as described in claim 2, characterized in that, The cold water tank (6) is fixed with a protective shell (17) that is sleeved on the outside of the bevel gear (16) to isolate the transmission environment of the bevel gear (16). The stirring rod (11) and the connecting shaft (14) are rotatably connected to the protective shell (17).
4. The backfire-preventing porous burner as described in claim 2, characterized in that, The cold water tank (6) is fixed with a fixing frame (13), the stirring rod (11) is rotatably connected to the fixing frame (13), the fixing frame (13) is used to stabilize the stirring rod (11), and the fixing frame (13) is cross-shaped.
5. The backfire-preventing porous burner as described in claim 1, characterized in that, The mixing chamber (3) is connected to a flange with a multi-hole nozzle (4) for assisting in preventing backfire. The multi-hole nozzle (4) is made of ceramic. The cold water tank (6) has a vent (9) on one side for assisting in cooling water dissipation.
6. The backfire-preventing porous burner as described in claim 5, characterized in that, An extension shell (10) is fixed on the outer wall of the cold water tank (6) and sleeved outside the vent (9). The extension shell (10) is used to prevent leakage. The top of the extension shell (10) is provided with an opening. A drain pipe for discharging cooling water is provided on one side of the cold water tank (6). A valve is provided on the drain pipe.
7. The backfire-preventing porous burner as described in claim 1, characterized in that, The burner body (2) is provided with a gas pipe for introducing combustion gas and a vent pipe for introducing combustion-supporting gas. Both the gas pipe and the vent pipe are provided with check valves to prevent gas backflow.