Combustor and fuel oil warmer with same

Abstract

The utility model provides a combustor and a fuel oil warmer with the combustor, the combustor comprises an outer pipe body and a combustion head assembly fixed at one end of the outer pipe body, and the other end of the outer pipe body is provided with a smoke outlet; the combustor further comprises an inner pipe body, the inner pipe body is axially fixed to the inner side of the outer pipe body, the outer side wall of the inner pipe body is in clearance fit with the inner side wall of the outer pipe body, the combustion end of the combustion head assembly is axially inserted into one end of the inner pipe body, and a plurality of through holes are formed in the side wall of the inner pipe body. The fuel oil warmer comprises the burner. According to the utility model, fuel oil can be fully combusted so as to achieve the purposes of energy conservation and environmental protection.

Description

Technical Field

[0001] This utility model relates to the field of fuel-fired heater technology, and more specifically, to a burner and a fuel-fired heater having the same. Background Technology

[0002] A fuel-fired heater is a device that uses fuel combustion to provide warmth. Due to its high heating efficiency and good heating effect, fuel-fired heaters are widely used in cold regions. Currently, Chinese Patent Publication No. CN110925863A discloses a heater structure in which a burner drives the fuel combustion. The burner's combustion port is located inside a combustion pipe, heating the air inside the pipe. The resulting hot flue gas can enter a flue gas pipe for heat exchange. In this structure, the fuel combustion process is completed within the combustion pipe. However, existing combustion pipes are simple tubular structures, making it difficult for the fuel to burn completely. Incompletely burned fuel is mixed in with the flue gas and emitted with it, resulting in fuel waste and hindering energy conservation and environmental protection. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a burner and a fuel heater having the same, which can promote the complete combustion of fuel to achieve the purpose of energy saving and environmental protection.

[0004] This utility model provides a burner, including an outer tube and a burner head assembly fixed to one end of the outer tube, and a smoke exhaust port is provided at the other end of the outer tube; the burner also includes an inner tube, which is axially fixed to the inner side of the outer tube, and the outer side wall of the inner tube is clearance-fitted with the inner side wall of the outer tube, the combustion end of the burner head assembly is axially inserted into one end of the inner tube, and a plurality of through holes are provided on the side wall of the inner tube.

[0005] By adopting the above-described structure, when the burner assembly causes the fuel to burn in the inner tube, the heat generated by the fuel combustion can heat the inner tube. At the same time, the flue gas generated by the fuel combustion can pass through the through hole located on the side wall of the inner tube and reach the gap between the inner tube and the outer tube. Finally, the flue gas can be discharged from the burner through the exhaust port. When the flue gas passes through the through hole, if there is unburned fuel in the flue gas, the residual fuel in the flue gas can be reheated and burned again by the inner tube, thereby promoting the complete combustion of fuel and achieving the purpose of energy saving and environmental protection.

[0006] In one possible implementation, the inner tube body has several groups of first openings and several groups of second openings on its sidewall. The groups of first openings and several groups of second openings are spaced apart and equally spaced around the circumferential direction of the inner tube body. Each group of first openings includes first openings that are disposed on the sidewall of the inner tube body and equally spaced along the axial direction of the inner tube body. Each group of second openings includes second openings that are disposed on the sidewall of the inner tube body and equally spaced along the axial direction of the inner tube body. The second openings and the first openings are staggered along the axial direction of the inner tube body. All the first openings and all the second openings form several through holes.

[0007] In one possible implementation, both ends of the inner tube in the axial direction are fixed to the inner wall of the outer tube by a number of connectors that are spaced apart in the circumferential direction around the inner tube. One end of each connector is fixed to the outer wall of the inner tube, and the other end of each connector is fixed to the inner wall of the outer tube.

[0008] In one possible implementation, several connectors located at each end of the inner tube are evenly spaced around the circumference of the inner tube.

[0009] In one possible implementation, each connector includes a connecting portion, a first bent section disposed at one end of the connecting portion, and a second bent section disposed at the other end of the connecting portion; the first bent section is fixed to the outer side wall of the inner tube body, and the second bent section is fixed to the inner side wall of the outer tube body.

[0010] In one possible implementation, each connecting part is provided with at least one rib, the rib extends in the radial direction of the inner tube, and the two ends of the rib are close to the first bending section and the second bending section, respectively.

[0011] In one possible implementation, each connecting part is provided with two raised ribs, and the two raised ribs on each connecting part are distributed at intervals along the axial direction of the inner tube.

[0012] In one possible implementation, the rib is stamped on the connecting portion, and a groove is naturally formed on the back side of the rib.

[0013] A fuel-fired heater includes a housing with a front-opening heat radiation cavity. A protective net is fixed to the front opening of the heat radiation cavity. The fuel-fired heater also includes the aforementioned burner, which is disposed inside the heat radiation cavity and fixed to the housing. Attached Figure Description

[0014] Figure 1 This is a cross-sectional structural diagram of the burner;

[0015] Figure 2 A partially disassembled three-dimensional structural diagram of the burner;

[0016] Figure 3 for Figure 2 A magnified structural diagram of point A in the middle;

[0017] Figure 4 A three-dimensional structural diagram of a fuel-fired heater;

[0018] Figure 5 A three-dimensional structural diagram of a fuel-fired heater after the protective mesh has been removed. Detailed Implementation

[0019] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0020] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0021] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0022] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] See Figure 1-3 As shown in the figure, this application discloses a burner, including an outer tube 1 and a burner head assembly 2 fixed to one end of the outer tube 1. The other end of the outer tube 1 is provided with a smoke exhaust port 11. The burner also includes an inner tube 3, which is axially fixed to the inner side of the outer tube 1. The outer side wall of the inner tube 3 is clearance-fitted with the inner side wall of the outer tube 1. The combustion end of the burner head assembly 2 is axially inserted into one end of the inner tube 3. A plurality of through holes 31 are provided on the side wall of the inner tube 3.

[0024] The inner tube 3 has several sets of first openings and several sets of second openings on its sidewall. These sets of first and second openings are spaced apart and evenly distributed around the circumference of the inner tube 3. Each set of first openings includes first openings 311 evenly distributed along the axial direction of the inner tube 3 on its sidewall. Each set of second openings includes second openings 312 evenly distributed along the axial direction of the inner tube 3 on its sidewall. The second openings 312 and the first openings 311 are located along the axial direction of the inner tube 3. The orientation is staggered, and all the first openings 311 and all the second openings 312 form a number of through holes 31. By adopting this structure, since the number of first opening groups and the number of second opening groups are spaced apart and equally spaced around the circumferential direction of the inner tube, and since the second openings and the first openings are staggered along the axial direction of the inner tube, the inner tube can have reliable structural strength while ensuring that the inner tube has a sufficient number of through holes. Thus, when the inner tube is in a high-temperature environment, the inner tube can be effectively prevented from deforming due to heat.

[0025] Both ends of the inner tube 3 in the axial direction are fixed to the inner wall of the outer tube 1 by a number of connectors 4 that are spaced apart in the circumferential direction around the inner tube 3. One end of each connector 4 is fixed to the outer wall of the inner tube 3, and the other end of each connector 4 is fixed to the inner wall of the outer tube 1. With this structure, the inner tube can be reliably fixed to the inner side of the outer tube by the action of the connectors located at each end of the inner tube in the axial direction.

[0026] Several connectors 4 located at each end of the inner tube 3 are evenly distributed around the circumference of the inner tube 3. By adopting this method, several connectors located at each end of the inner tube in the axial direction can reliably support the inner tube, so as to effectively avoid the inner tube from shifting relative to the outer tube. In addition, in this embodiment, three connectors are provided at each end of the inner tube in the axial direction, evenly distributed around the circumference of the inner tube.

[0027] Each connector 4 includes a connecting portion 41, a first bent section 42 disposed at one end of the connecting portion 41, and a second bent section 43 disposed at the other end of the connecting portion 41. The first bent section 42 is fixed to the outer wall of the inner tube 3, and the second bent section 43 is fixed to the inner wall of the outer tube 1. With this structure, under the action of the first bent section, one end of the connecting portion can be reliably fixed to the outer wall of the inner tube, and under the action of the second bent section, the other end of the connecting portion can be reliably fixed to the inner wall of the outer tube. In addition, the connecting portion, the first bent section, and the second bent section are integrally formed, and the first bent section is formed by bending at one end of the connecting portion, and the second bent section is formed by bending at the other end of the connecting portion, so that each connector has higher structural strength and deformation resistance. Furthermore, the first bent section is fixed to the outer wall of the inner tube by welding, and the second bent section can be fixed to the inner wall of the outer tube by welding or screws.

[0028] Each connecting part 41 is provided with at least one protruding rib 411, which extends along the radial direction of the inner tube 3. The two ends of the protruding rib 411 are close to the first bending section 42 and the second bending section 43, respectively. By adopting this structure, the connecting part has more reliable structural strength and deformation resistance, thereby enabling the connecting part to reliably achieve the fixing and support function of the inner tube.

[0029] Each connecting part 41 is provided with two protruding ribs 411, and the two protruding ribs 411 on each connecting part 41 are distributed at intervals along the axial direction of the inner tube 3. By adopting this structure, the connecting part has higher structural strength and deformation resistance, thereby enabling the connecting part to reliably achieve the fixing and support function of the inner tube.

[0030] The rib 411 is stamped on the connecting part 41, and the back side of the rib 411 naturally forms a groove 412. By adopting this structure, it has the advantages of easy rib forming and good integrity between the rib and the connecting part. Furthermore, since the back side of the rib can naturally form a groove after the rib is stamped and formed on the connecting part, the structural strength and deformation resistance of the connecting part can be further improved, so that the connecting part can reliably achieve the fixing and support function of the inner tube.

[0031] See Figure 4 and Figure 5 As shown, a fuel-fired heater includes a housing 5, a heat radiation cavity 51 with a front opening on the housing 5, a protective net 6 fixed at the front opening of the heat radiation cavity 51, and the fuel-fired heater also includes the aforementioned burner, which is disposed inside the heat radiation cavity 51 and fixed to the housing 5; after adopting the aforementioned burner, the fuel-fired heater can make the fuel burn more completely, thereby achieving the purpose of environmental protection and energy saving.

[0032] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A burner, comprising an outer tube (1) and a burner head assembly (2) fixed to one end of the outer tube (1), wherein the other end of the outer tube (1) is provided with a smoke exhaust port (11); characterized in that: The burner also includes an inner tube (3), which is axially fixed to the inner side of the outer tube (1), and the outer side wall of the inner tube (3) is clearance-fitted with the inner side wall of the outer tube (1). The combustion end of the burner head assembly (2) is axially inserted into one end of the inner tube (3), and several through holes (31) are provided on the side wall of the inner tube (3).

2. The burner according to claim 1, characterized in that: The inner tube (3) has several sets of first openings and several sets of second openings on its sidewall. The sets of first openings and several sets of second openings are spaced apart and equally spaced around the circumferential direction of the inner tube (3). Each set of first openings includes first openings (311) that are provided on the sidewall of the inner tube (3) and equally spaced along the axial direction of the inner tube (3). Each set of second openings includes second openings (312) that are provided on the sidewall of the inner tube (3) and equally spaced along the axial direction of the inner tube (3). The second openings (312) and the first openings (311) are staggered along the axial direction of the inner tube (3). All the first openings (311) and all the second openings (312) form several through holes (31).

3. The burner according to claim 1 or 2, characterized in that: Both ends of the inner tube (3) in the axial direction are fixed to the inner wall of the outer tube (1) by several connectors (4) that are spaced apart around the inner tube (3) in the circumferential direction. One end of each connector (4) is fixed to the outer wall of the inner tube (3), and the other end of each connector (4) is fixed to the inner wall of the outer tube (1).

4. The burner according to claim 3, characterized in that: Several connectors (4) located at each end of the inner tube (3) are distributed at equal intervals around the circumferential direction of the inner tube (3).

5. The burner according to claim 3, characterized in that: Each of the connectors (4) includes a connecting portion (41), a first bent section (42) disposed at one end of the connecting portion (41), and a second bent section (43) disposed at the other end of the connecting portion (41); the first bent section (42) is fixed to the outer side wall of the inner tube (3), and the second bent section (43) is fixed to the inner side wall of the outer tube (1).

6. The burner according to claim 5, characterized in that: Each of the connecting parts (41) is provided with at least one rib (411), the rib (411) extends in the radial direction of the inner tube (3), and the two ends of the rib (411) are close to the first bending section (42) and the second bending section (43), respectively.

7. The burner according to claim 6, characterized in that: Each of the connecting parts (41) is provided with two ribs (411), and the two ribs (411) on each connecting part (41) are distributed at intervals along the axial direction of the inner tube (3).

8. The burner according to claim 6 or 7, characterized in that: The rib (411) is stamped on the connecting part (41), and the back side of the rib (411) naturally forms a groove (412).

9. A fuel-fired heater, comprising a housing (5), wherein a heat radiation cavity (51) with a front opening is provided on the housing (5), and a protective net (6) is fixed at the front opening of the heat radiation cavity (51), characterized in that: The fuel-fired heater further includes a burner as described in any one of claims 1-8, the burner being disposed inside the heat radiation cavity (51) and fixed to the housing (5).

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