Multi-fuel burner

Abstract

The utility model discloses a multi-fuel combustor and relates to the field of combustors, the multi-fuel combustor comprises a base body and a combustion chamber arranged on the base body, a material distribution head is arranged in the combustion chamber, a material distribution cavity is formed in the material distribution head, a plurality of material distribution holes are further formed in the material distribution head, and the material distribution holes communicate with the material distribution cavity and extend to the outer side of the material distribution head; the base body is provided with a material supply channel used for supplying fuel to the material distribution head. A flow dividing cover is further arranged in the combustion chamber, a material dividing head is covered with the flow dividing cover, and a plurality of flow dividing holes are formed in the flow dividing cover. The base body is further provided with an air inlet channel, and the air inlet channel communicates with the flow dividing cover and is used for supplying combustion-supporting gas to the flow dividing cover. The burner has the effects that the burner can be suitable for liquid and gas fuel, and the applicability of the burner is improved.

Description

Technical Field

[0001] This application relates to the field of burners, and more particularly to a multi-fuel burner. Background Technology

[0002] A burner is a general term for a device that sprays out a mixture of fuel and combustion-supporting gas in a specific manner for combustion. The combustion-supporting air is usually oxygen-containing air or oxygen. In a vehicle parking heater, fuel combustion is typically used to generate heat, which is then transferred to a heat exchange medium via a heat exchanger, thereby heating the entire vehicle.

[0003] A patent with publication number CN222718192U discloses a burner for a heater, including a combustion cylinder and a combustion chamber cover located at one end of the combustion cylinder. An air inlet is provided in the middle of the combustion chamber cover. An air distribution duct is disposed inside the combustion cylinder, with one end connected to the air inlet. Air distribution holes are provided on the side wall of the air distribution duct. An oleophobic felt is attached to the inner wall of the combustion cylinder, located on the side of the combustion cylinder near the combustion chamber cover. An oil inlet pipe for supplying oil to the oleophobic felt is connected to the side of the combustion cylinder near the combustion chamber cover, and the air distribution holes are positioned opposite the oleophobic felt. Fuel enters the combustion cylinder through the oil inlet pipe and is dispersed by the oleophobic felt. After the fuel is ignited, it burns on the surface of the oleophobic felt, with the air distribution holes positioned opposite the oleophobic felt.

[0004] In the above scheme, the fuel is dispersed by the oleophobic felt and burned on the surface of the oleophobic felt. The oleophobic felt can only effectively disperse liquid fuel, but the available fuels are relatively limited and the applicability is relatively low, which needs to be improved. Utility Model Content

[0005] In order to improve the relatively low applicability of burners for heaters in related technologies, this application provides a multi-fuel burner.

[0006] This application provides a multi-fuel burner, which adopts the following technical solution:

[0007] A multi-fuel burner includes a base and a combustion chamber disposed on the base. A material distribution head is disposed in the combustion chamber. A material distribution cavity is disposed in the material distribution head. A plurality of material distribution holes are also provided on the material distribution head. The material distribution holes communicate with the material distribution cavity and extend to the outside of the material distribution head.

[0008] The substrate is provided with a feeding channel for supplying fuel to the distribution head;

[0009] The combustion chamber is also equipped with a flow divider, which covers the material distribution head and has multiple flow divider holes.

[0010] The substrate is also provided with an air inlet channel, which is connected to the distribution hood and used to supply combustion-supporting gas to the distribution hood.

[0011] By adopting the above technical solution, in practical applications, either liquid or gaseous fuel can be used. Fuel enters the distribution chamber through the feeding channel and is sprayed into the distribution hood through the distribution holes, thus dispersing the fuel. Simultaneously, combustion-supporting gas enters the distribution hood through the air inlet channel, mixes with the sprayed fuel, and flows into the combustion chamber through the distribution holes. At this point, the fuel and combustion-supporting gas mixture entering the combustion chamber can be ignited and burned, releasing heat outwards. In this way, the burner can use both liquid and gaseous fuels, improving its applicability.

[0012] Preferably, the plurality of dispensing holes are evenly spaced around the dispensing head.

[0013] By adopting the above technical solutions, it is helpful to improve the uniformity of the sprayed fuel within the diffuser.

[0014] Preferably, the plurality of diversion holes are evenly spaced around the diversion shroud.

[0015] By adopting the above technical solution, it is helpful to improve the uniformity of the combustion gas and sprayed fuel mixture when it is delivered into the combustion chamber, thereby improving the uniformity of the flame around the diffuser.

[0016] Preferably, the air inlet channel is provided with multiple channels surrounding the material distribution head.

[0017] By adopting the above technical solutions, it is helpful to improve the uniformity of the mixing between the combustion-supporting gas and the sprayed fuel.

[0018] Preferably, the dispensing head is hollow cylindrical, the dispensing cavity is formed inside the dispensing head, and a plurality of dispensing holes are distributed around the axis of the dispensing head;

[0019] The flow divider includes a flow divider duct, which is coaxial with the material distribution head. The flow divider holes are opened on the flow divider duct, and a plurality of the flow divider holes are distributed around the axis of the flow divider duct.

[0020] By adopting the above technical solution, it is helpful to improve the uniformity of the sprayed fuel in the diffuser, thereby improving the uniformity of the flame around the diffuser.

[0021] Preferably, the substrate includes a combustion cylinder and a cover, the cover is located on one side of the combustion cylinder along its axial direction, the combustion chamber is formed inside the combustion cylinder, the axis of the combustion cylinder is parallel to the axis of the material distribution head, and the material distribution head and the flow divider are located in the middle of the cover.

[0022] By adopting the above technical solutions, the uniformity of the flame around the diffuser can be further improved.

[0023] Preferably, the diversion hood further includes a baffle plate, which is located at the end of the air distribution duct away from the cover, and the baffle plate is spaced apart from the air distribution duct and forms an air distribution opening with the air distribution duct.

[0024] By adopting the above technical solution, on the one hand, the baffle plate prevents the combustion-supporting gas and fuel mixture from being directly sprayed out; on the other hand, it makes the baffle plate and the air distribution duct separated, providing a position for the combustion-supporting gas and fuel mixture to be sprayed out and burned, and reducing the dead angle between the baffle plate and the air distribution duct, thus reducing the amount of carbon deposits accumulated in the dead angle between the baffle plate and the air distribution duct.

[0025] Preferably, the edge of the baffle plate extends to the outside of the air distribution duct.

[0026] By adopting the above technical solutions, it is helpful to prevent the flame from flowing out of the combustion chamber quickly, and to improve the utilization rate of flame heat.

[0027] Preferably, the substrate is provided with an air-gathering groove, and the side of the air inlet channel away from the diverter shroud is connected to the air-gathering groove.

[0028] By adopting the above technical solution, the air-gathering trough can gather airflow and ensure that the air pressure outside the air inlet channel is relatively stable, so that the combustion-supporting gas can enter the diversion hood relatively quickly through the air inlet channel, ensuring a sufficient supply of combustion-retardant gas.

[0029] Preferably, the substrate is further provided with a guiding air duct, one end of which is connected to the outside of the substrate, and the other end of which is connected to the air inlet channel;

[0030] The guiding air duct is designed to gradually narrow from the outside towards the air inlet channel.

[0031] By adopting the above technical solution, in practical applications, the airflow can enter the air inlet channel through the guide air duct. As the guide air duct gradually contracts towards the air inlet channel, the airflow will be restricted and accelerated within the guide air duct, allowing the airflow to flow quickly into the diverter hood, which helps to improve the sufficiency of air supply to the diverter hood. Attached Figure Description

[0032] Figure 1 This is an isometric schematic diagram of the overall structure of the multi-fuel burner, which is the main feature of Example 1.

[0033] Figure 2 This is a cross-sectional view of the main structure of the multi-fuel burner in Example 1;

[0034] Figure 3 This is an exploded view of the structure of the material distribution head and the flow distribution hood, which is the main features of Example 1.

[0035] Figure 4 This is an isometric schematic diagram of the overall structure of the multi-fuel burner, which is the main feature of Example 2.

[0036] Figure 5 This is an exploded view of the main cover structure in Example 2.

[0037] Reference numerals: 1. Matrix; 11. Combustion chamber; 12. Feeding channel; 121. Conveying pipe; 13. Air inlet channel; 14. Combustion cylinder; 141. Heating ring; 15. Cover; 151. Base plate; 152. Fixing plate; 153. Guide vane; 16. Mounting ring plate; 2. Distributor head; 21. Distributor chamber; 22. Distributor hole; 23. Inclined base surface; 3. Diverter hood; 31. Diverter hole; 32. Air distribution duct; 33. Baffle plate; 331. Air distribution opening; 4. Air concentrator; 5. Electric heating plug; 6. Guide air duct; 7. Temperature sensor. Detailed Implementation

[0038] The present application will be further described in detail below with reference to the accompanying drawings.

[0039] This application discloses a multi-fuel burner.

[0040] Example 1:

[0041] Reference Figure 1 and Figure 2 A multi-fuel burner includes a base 1 and a combustion chamber 11 disposed on the base 1. A feed head 2 is disposed within the combustion chamber 11, and a feed chamber 21 is disposed within the feed head 2. A feed hole 22 is also provided on the feed head 2, communicating with the feed chamber 21 and extending to the outside of the feed head 2. A feed channel 12 for supplying fuel to the feed head 2 is also provided on the base 1. A flow divider 3 is also disposed within the combustion chamber 11, covering the feed head 2. A flow divider hole 31 is provided on the flow divider 3. An air inlet channel 13 is also provided on the base 1, communicating with the flow divider 3 and supplying combustion-supporting gas to the flow divider 3.

[0042] Specifically, the base 1 includes a combustion chamber 14, a cover 15, and a mounting ring plate 16. The mounting ring plate 16 surrounds the outside of the combustion chamber 14, is located at one end of the combustion chamber 14, and is fixed to the combustion chamber 14. The cover 15 is located inside the combustion chamber 14 on the side near the mounting ring plate 16, and the periphery of the cover 15 is welded and fixed to the inner wall of the combustion chamber 14, with an air inlet channel 13 located on the cover 15. An air-gathering groove 4 is formed inside the combustion chamber 14 on the side of the cover 15 near the mounting ring plate 16, and a combustion chamber 11 is formed inside the combustion chamber 14 on the side of the cover 15 opposite to the air-gathering groove 4. Simultaneously, an electric heating plug 5 is fixed on the cover 15, the electric heating plug 5 penetrates the cover 15, the heating end of the electric heating plug 5 penetrates into the combustion chamber 11, and the heating end of the electric heating plug 5 is located outside the flow divider 3.

[0043] The distributing head 2 is a hollow column and is located in the middle of the cover 15. The axis of the distributing head 2 is parallel to the axis of the combustion cylinder 14. The end of the distributing head 2 near the cover 15 is open and welded to the middle of the cover 15. A conveying pipe 121 is fixed to the middle of the side of the cover 15 away from the distributing head 2. The conveying pipe 121 is connected to the end of the distributing head 2 near the cover 15, and the feeding channel 12 is formed inside the conveying pipe 121. The end of the distributing head 2 away from the cover 15 is a boss-shaped protrusion. The diameter of the end of the distributing head 2 away from the cover 15 gradually decreases from the side near the cover 15 to the side away from the cover 15, and an inclined base surface 23 is formed at the end of the distributing head 2 away from the cover 15. Multiple sets of distributing holes 22 are arranged at intervals along the axial direction of the distributing head 2. Each set of distributing holes 22 includes multiple distributing holes 22 evenly spaced around the axis of the distributing head 2. In this embodiment, two sets of dispensing holes 22 are provided; one set of dispensing holes 22 is located on the inclined base surface 23, and each dispensing hole 22 on the inclined base surface 23 is inclined relative to the axis of the dispensing head 2; the other set of dispensing holes 22 is located in the middle of the dispensing head 2 near the inclined base surface 23.

[0044] See Figure 2 and Figure 3 The distribution hood 3 includes a distribution duct 32 and a baffle plate 33. The distribution duct 32 is fitted with a material distribution head 2 and is coaxial with the material distribution head 2. One end of the distribution duct 32 is welded and fixed to the cover body 15. Distribution holes 31 are formed on the distribution duct 32, and multiple sets of distribution holes 31 are arranged at intervals along the axial direction of the distribution duct 32. Each set of distribution holes 31 includes multiple distribution holes 31 evenly spaced around the axis of the distribution duct 32. In this embodiment, four sets of distribution holes 31 are provided. The baffle plate 33 is circular and located on the side of the distribution duct 32 away from the cover body 15. The axis of the baffle plate 33 is collinear with the axis of the distribution duct 32, and the diameter of the baffle plate 33 is larger than the diameter of the distribution duct 32. The baffle plate 33 is spaced apart from the distribution duct 32, and a portion of the baffle plate 33 protrudes towards the distribution duct 32. The distribution duct 32 is welded to the protruding part of the baffle plate 33, and a distribution air passage 331 is formed between the baffle plate 33 and the distribution duct 32.

[0045] An air inlet channel 13 penetrates the cover 15 and is arc-shaped. The center of curvature of the air inlet channel 13 is located on the axis of the material distribution head 2. Multiple air inlet channels 13 are arranged around the axis of the material distribution head 2. In this embodiment, three air inlet channels 13 are provided.

[0046] In order to prolong the residence time of the flame or high-temperature flue gas in the combustion chamber 11, a heat-retaining ring 141 is also provided in the combustion chamber 11. The heat-retaining ring 141 is located on the baffle plate 33 away from the air distribution duct 32, and the outer edge of the heat-retaining ring 141 is welded and fixed to the inner wall of the combustion duct 14.

[0047] The implementation principle of a multi-fuel burner according to an embodiment of this application is as follows: In actual use, the fuel can be liquid fuel or gaseous fuel. The fuel can be sent into the distribution chamber 21 through the feed pipe 121 and sprayed into the distribution shroud 3 through the distribution hole 22, so that the fuel can be dispersed. At the same time, the combustion-supporting gas can enter the distribution shroud 3 through the air inlet channel 13. The combustion-supporting gas mixes with the sprayed fuel and flows into the combustion chamber 11 through the distribution hole 31 and the air distribution port 331. At this time, the electric heating plug 5 works, and the fuel and combustion-supporting gas mixture entering the combustion chamber 11 can be ignited and burned, and heat is released to the outside.

[0048] Example 2:

[0049] Reference Figure 4 and 5 The difference between this embodiment and Embodiment 1 is that the air inlet channel 13 is a circular hole and coaxial with the surrounding material distribution head 2. A guide air duct 6 is also provided on the cover 15. One end of the guide air duct 6 is connected to the outside of the base 1, and the other end of the guide air duct 6 is connected to the air inlet channel 13. The guide air duct 6 gradually narrows from the outside towards the air inlet channel 13. Furthermore, the guide air duct 6 is arc-shaped, and multiple guide air ducts 6 are evenly spaced around the axis of the air inlet channel 13.

[0050] Specifically, the cover 15 is located at the end of the combustion cylinder 14. The cover 15 includes a base plate 151, a fixing plate 152, and a guide vane 153 integrally formed on the fixing plate 152. The middle part of the base plate 151 protrudes towards the combustion cylinder 14 to form a boss, which is welded and fixed to the end of the combustion cylinder 14. The air concentrator 4 is formed on the side of the base plate 151 away from the combustion cylinder 14. The air inlet channel 13 is opened in the middle of the boss. The guide vane 153 is located between the fixing plate 152 and the base plate 151, and the side of the guide vane 153 away from the fixing plate 152 is welded and fixed to the base plate 151. The feed head 2 passes through the air inlet channel 13. The end of the feed head 2 away from its inclined base surface 23 is fixed to the middle of the fixing plate 152. The end of the feed pipe 121 is fixed to the fixing plate 152, and the feed pipe 121 is connected to the feed head 2.

[0051] Meanwhile, the guide vane 153 is arc-shaped and is set from the edge of the fixed plate 152 toward the air inlet channel 13. Multiple guide vanes 153 are arranged around the fixed plate 152, and the air duct 6 is formed between two adjacent guide vanes 153.

[0052] In addition, in this embodiment, the mounting ring plate 16 is arranged around the substrate 151 and integrally formed with the substrate 151, and a temperature sensor 7 is also fixed on the cover 15, with the probe of the temperature sensor 7 penetrating into the combustion chamber 11.

[0053] In practical application, the airflow can enter the air inlet channel 13 through the guide air duct 6. As the guide air duct 6 gradually contracts towards the air inlet channel 13, the airflow will be restricted and accelerated within the guide air duct 6, causing the airflow to flow quickly into the diverter hood 3.

[0054] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multi-fuel burner comprising a base body (1) and a combustion chamber (11) arranged on the base body (1), characterized in that: The combustion chamber (11) is provided with a material distribution head (2), the material distribution head (2) is provided with a material distribution cavity (21), and the material distribution head (2) is also provided with a plurality of material distribution holes (22). The material distribution holes (22) are connected to the material distribution cavity (21) and extend to the outside of the material distribution head (2). The substrate (1) is provided with a feeding channel (12) for supplying fuel to the feeding head (2). The combustion chamber (11) is also provided with a flow divider (3), which covers the material distribution head (2) and has multiple flow divider holes (31). The substrate (1) is also provided with an air inlet channel (13), which is connected to the flow divider (3) and is used to supply combustion-supporting gas to the flow divider (3).

2. A multi-fuel burner according to claim 1, characterized in that: Multiple dispensing holes (22) are evenly spaced around the dispensing head (2).

3. A multi-fuel burner according to claim 1, characterized in that: Multiple flow dividers (31) are evenly spaced around the flow divider (3).

4. A multi-fuel burner according to claim 1, characterized in that: The air inlet channel (13) is provided in multiple ways around the material distribution head (2).

5. A multi-fuel burner according to claim 1, characterized in that: The dispensing head (2) is hollow columnar, the dispensing cavity (21) is formed inside the dispensing head (2), and a plurality of dispensing holes (22) are distributed around the axis of the dispensing head (2); The flow divider (3) includes a flow divider (32), which is coaxial with the material distribution head (2). The flow divider holes (31) are opened on the flow divider (32), and multiple flow divider holes (31) are distributed around the axis of the flow divider (32).

6. A multi-fuel burner according to claim 5, characterized in that: The base (1) includes a combustion cylinder (14) and a cover (15). The cover (15) is located on one side of the combustion cylinder (14) along its axial direction. The combustion chamber (11) is formed inside the combustion cylinder (14). The axis of the combustion cylinder (14) is parallel to the axis of the material distribution head (2). The material distribution head (2) and the flow divider (3) are located in the middle of the cover (15).

7. A multi-fuel burner according to claim 6, characterized in that: The duct hood (3) also includes a baffle plate (33), which is located at one end of the air duct (32) away from the cover (15), and the baffle plate (33) is spaced apart from the air duct (32) and forms an air duct opening (331) between the air duct (32).

8. A multi-fuel burner according to claim 7, characterized in that: The edge of the baffle plate (33) extends to the outside of the air distribution duct (32).

9. A multi-fuel burner according to claim 1, characterized in that: The base (1) is provided with an air-gathering groove (4), and the side of the air inlet channel (13) away from the diverter (3) is connected to the air-gathering groove (4).

10. A multi-fuel burner according to claim 1 or 9, characterized in that: The substrate (1) is also provided with a guide air duct (6), one end of which is connected to the outside of the substrate (1), and the other end of which is connected to the air inlet channel (13); The guiding air duct (6) is set to gradually shrink from the outside towards the air inlet duct (13).

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