Burner for heater

Abstract

The present application discloses a burner for a heater, which relates to the field of fuel oil heaters, and comprises a combustion tube and a combustion chamber cover located at one end of the combustion tube, an air inlet is provided in the middle of the combustion chamber cover, an air distribution tube is provided in the combustion tube, one end of the air distribution tube is connected to the air inlet, and an air distribution hole is provided on the side wall of the air distribution tube. The present application has the effect of helping to improve the thermal efficiency of the burner.

Description

Technical Field

[0001] The present application relates to the field of fuel oil heaters, and in particular to a burner for a heater. Background Art

[0002] A parking heater is an independent heating device designed for cars parked in cold conditions. It can provide warmth to the engine and cab without starting the engine, effectively eliminating cold start wear and ensuring smooth vehicle start in cold weather. Parking heaters usually use fuel combustion to generate heat, which is transferred to the heat exchange medium through a heat exchanger to heat the entire vehicle.

[0003] The existing patent with announcement number CN111237752B discloses a burner for automobile heater, including a primary combustion tube and a combustion chamber cover arranged at one end of the primary combustion tube, a primary air inlet hole is also opened on the side wall of the primary combustion tube, an air flow vane is arranged on the combustion chamber cover at the inner side of the primary combustion tube, a secondary air inlet hole is opened on the outer wall of the primary combustion tube close to the combustion chamber cover, and the secondary air inlet hole is opened from the outside to the inside toward the air flow vane; an induced draft tube is coaxially sleeved on the outer side of the primary combustion tube, the induced draft tube and the primary combustion tube are detachably fixed, an induced draft channel is formed between the induced draft tube and the primary combustion tube, the induced draft channel is openly arranged on one side of the combustion chamber cover, a rectifier plate is fixedly arranged at the open part of the induced draft channel, the rectifier plate is arranged in an arc plate, and the arc direction of the rectifier plate extends obliquely from the side wall of the induced draft tube to the middle position of the induced draft tube. In the parking heater, a combustion-supporting fan is configured to supply combustion-supporting air to the burner. In actual use, air is guided to the induced draft channel through the rectifying plate, and enters the combustion tube through the primary air inlet hole and the secondary air inlet hole, thereby providing oxygen for combustion in the combustion tube.

[0004] However, the burner is often embedded in the heat exchanger, and the induced draft tube and induced draft channel separate the primary combustion tube from the heat exchanger. The air will absorb and carry away the heat from the side wall of the primary combustion tube, making the thermal efficiency of the burner low. There is room for improvement. Utility Model Content

[0005] In order to improve the problem of relatively low thermal efficiency of the burner in the related art, the present application provides a burner for a heater.

[0006] The present application provides a burner for a heater, which adopts the following technical solution:

[0007] A burner for a heater comprises a combustion tube and a combustion chamber cover located at one end of the combustion tube, an air inlet is provided in the middle of the combustion chamber cover, an air distribution tube is provided in the combustion tube, one end of the air distribution tube is connected to the air inlet, and an air distribution hole is provided on the side wall of the air distribution tube.

[0008] By adopting the above technical solution, in actual use, air can enter the air distribution tube through the air inlet; then, the air can enter the combustion tube through the air distribution hole and provide oxygen for the combustion of the fuel. The flame generated by the combustion of the fuel will be able to directly act on the heat exchanger through the combustion tube. In this way, it helps to improve the thermal efficiency of the burner.

[0009] Preferably, an oleophobic felt is attached to the inner wall of the combustion tube, and the oleophobic felt is located on the side of the combustion tube close to the combustion chamber cover. The side of the combustion tube close to the combustion chamber cover is connected to an oil inlet pipe for supplying oil to the oleophobic felt, and the air distribution hole is arranged relative to the oleophobic felt.

[0010] By adopting the above technical solution, in actual use, the fuel is dispersed by the oleophobic felt, and after the fuel is ignited, it will burn on the surface of the oleophobic felt. The air distribution holes and the oleophobic felt are arranged relative to each other, which helps to ensure the timeliness of the combustion-supporting air supply.

[0011] Preferably, the axis of the air distribution cylinder is arranged along the axial direction of the combustion cylinder, the air distribution cylinder is located in the middle of the combustion cylinder, the oleophobic felt is arranged around the axis of the combustion cylinder, and a plurality of air distribution holes are arranged at intervals around the axis of the air distribution cylinder.

[0012] By adopting the above technical solution, the combustion area on the oleophobic felt is expanded, and the air distribution tube and the air distribution holes supply combustion-supporting air to various parts of the oleophobic felt in a relatively uniform manner.

[0013] Preferably, the combustion chamber cover is also provided with an air inlet hole, and a plurality of the air inlet holes are arranged around the air inlet.

[0014] By adopting the above technical solution, on the one hand, combustion-supporting air can enter the combustion tube through the air inlet hole, thereby supplying combustion-supporting air to the combustion of the fuel. On the other hand, the air entering the combustion tube from the air inlet hole can guide the flame and smoke in the combustion tube, so that the flame and smoke in the combustion tube flow to the side of the combustion tube away from the combustion chamber cover, thereby reducing the turbulence of the flame and smoke in the combustion tube.

[0015] Preferably, a flame arrester disk is provided on the side of the air distribution tube facing away from the combustion chamber cover.

[0016] By adopting the above technical solution, the flame is blocked by the flame arrester disc to prevent the flame from flowing outward quickly, thereby helping to improve the completeness of fuel combustion.

[0017] Preferably, a protrusion is formed on one side of the flame arrester disk close to the air dividing cylinder, the side of the protrusion facing away from the flame arrester disk is fixed to the side of the air dividing cylinder facing away from the combustion chamber cover, and an air dividing gap is formed between the flame arrester disk and the air dividing cylinder.

[0018] By adopting the above technical solution, on the one hand, the air gap is set to reduce the area of ​​the dead angle between the air gap and the flame-blocking disk, and reduce the amount of carbon deposits accumulated in the dead angle between the air gap and the flame-blocking disk. On the other hand, the combustion-supporting air can enter the combustion tube through the air gap and prevent carbon deposits from accumulating in the dead angle between the air gap and the flame-blocking disk, further reducing the amount of carbon deposits accumulated in the dead angle between the air gap and the flame-blocking disk.

[0019] Preferably, a flame arrester ring is further provided in the combustion tube, and the flame arrester ring is located on the side of the flame arrester disk away from the air distribution tube.

[0020] The adoption of the above technical solution can help further improve the completeness of fuel combustion.

[0021] Preferably, a stabilizing ring is fixed in the combustion tube, the stabilizing ring is located on the side of the oleophobic felt away from the combustion chamber cover, and the stabilizing ring is in contact with the oleophobic felt.

[0022] By adopting the above technical solution, the stabilizing ring abuts against the oleophobic felt and supports the oleophobic felt, thereby ensuring the stability of the oleophobic felt in the combustion tube.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Through the coordination of the air inlet, air distribution tube and air distribution hole, the combustion air is introduced into the combustion tube from the middle of the combustion chamber cover. The flame generated by the fuel combustion can directly act on the heat exchanger through the combustion tube, thereby helping to improve the thermal efficiency of the burner;

[0025] 2. With the help of the air inlet holes on the combustion chamber cover, the flame and smoke in the combustion tube can be diverted so that the flame and smoke in the combustion tube flow to the side of the combustion tube away from the combustion chamber cover, thereby reducing the turbulence of the flame and smoke in the combustion tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is an axonometric diagram mainly showing the overall structure of the burner for the heater in this embodiment;

[0027] Figure 2 This is a partial cross-sectional view mainly showing the structure inside the combustion tube of this embodiment;

[0028] Figure 3 This is a schematic diagram mainly showing the structure of the air distribution tube and the flame arrester disk in this embodiment.

[0029] Figure numerals: 1. combustion tube; 11. mounting tube; 12. oil inlet pipe; 13. mounting ring plate; 14. stabilizing ring; 2. combustion chamber cover; 21. air inlet; 22. air inlet hole; 3. oleoresin; 4. electric heating plug; 5. air distributor; 51. air distributor hole; 52. flame arrester disk; 53. protrusion; 6. air distributor gap; 7. flame arrester ring. DETAILED DESCRIPTION

[0030] The present application is further described in detail below in conjunction with the accompanying drawings.

[0031] The embodiment of the present application discloses a burner for a heater.

[0032] Reference Figure 1 and Figure 2 , a burner for a heater, comprising a combustion tube 1 and a combustion chamber cover 2. The combustion tube 1 is open at both ends, the combustion chamber cover 2 is welded and fixed to one end of the combustion tube 1 and closes the port at the corresponding end of the combustion tube 1, and an air inlet 21 is opened in the middle of the combustion chamber cover 2. An oleophobic felt 3 is attached to the inner wall of the combustion tube 1, and a mounting tube 11 is provided on the outer wall of the combustion tube 1. One end of the mounting tube 11 is fixed and connected to the combustion tube 1, and the oleophobic felt 3 is partially located at the connection between the mounting tube 11 and the combustion tube 1, and the other end of the mounting tube 11 faces the side away from the combustion tube 1. An electric heating plug 4 is provided on the mounting tube 11, and the electric heating plug 4 penetrates into the mounting tube 11 from the side of the mounting tube 11 away from the combustion tube 1 and is threadedly connected to the mounting tube 11, and the electric heating plug 4 extends toward one side of the combustion tube 1. The side of the mounting tube 11 close to the combustion tube 1 is also connected to the oil inlet pipe 12. In addition, a mounting ring plate 13 is arranged around the outer side of the combustion tube 1, and the inner side of the mounting ring plate 13 is welded and fixed to the combustion tube 1.

[0033] In actual use, the fuel is fed into the installation pipe 11 through the fuel inlet pipe 12, and then fed to the oleophobic felt 3 through the installation pipe 11; then, the fuel is heated by the electric heating plug 4, and when the fuel temperature reaches the ignition point, it will burn on the surface of the oleophobic felt 3. At the same time, the combustion-supporting air enters through the air inlet 21 to ensure the normal combustion of the fuel.

[0034] Specifically, see Figure 2 and Figure 3, the air inlet 21 is circular and coaxial with the combustion tube 1. An air distribution tube 5 is coaxially arranged in the combustion tube 1, and both ends of the air distribution tube 5 are open. The side of the air distribution tube 5 close to the combustion chamber cover 2 is welded and fixed to the combustion chamber cover 2, and the end of the air distribution tube 5 close to the combustion chamber cover 2 is covered with an air inlet 21. The side wall of the air distribution tube 5 is provided with air distribution holes 51, and the air distribution holes 51 are evenly arranged in multiple groups along the axis of the air distribution tube 5, and each group of air distribution holes 51 includes a plurality of air distribution holes 51 arranged around the air distribution tube 5. A flame-blocking disk 52 is coaxially arranged on the side of the air distribution tube 5 away from the combustion chamber cover 2, and a protrusion 53 is formed on the side of the flame-blocking disk 52 close to the air distribution tube 5, and three protrusions 53 are evenly spaced around the axis of the flame-blocking disk 52, and each protrusion 53 is fixed to the side of the air distribution tube 5 away from the combustion chamber cover 2 on the side away from the flame-blocking disk 52, and a wind-distributing gap 6 is formed between the flame-blocking disk 52 and the air distribution tube 5. In actual use, the combustion-supporting air enters the air distribution tube 5, and enters the combustion tube 1 through the air distribution holes 51 and the air distribution gaps 6. When the fuel burns in the combustion tube 1, the flame-blocking plate 52 can prevent the flame from flowing out quickly, and the combustion-supporting air passes through the air distribution gaps 6, which can prevent carbon deposits from accumulating in the dead corner between the air distribution tube 5 and the flame-blocking plate 52.

[0035] In order to reduce the occurrence of flame and smoke turbulence in the combustion tube 1, the combustion chamber cover 2 is further provided with air inlet holes 22, and a plurality of air inlet holes 22 are evenly spaced around the air inlet 21. In this embodiment, three air inlet holes 22 are provided.

[0036] The oleophobic felt 3 is a metal felt, which is arranged around the axis of the air distribution tube 5, and the side of the oleophobic felt 3 close to the combustion chamber cover 2 abuts against the combustion chamber cover 2. A stabilizing ring 14 is welded and fixed in the combustion tube 1, and the stabilizing ring 14 is located on the side of the oleophobic felt 3 away from the combustion chamber cover 2, and the stabilizing ring 14 abuts against the oleophobic felt 3, thereby ensuring the stability of the oleophobic felt 3.

[0037] In order to improve the completeness of fuel combustion, a flame arrester ring 7 is coaxially arranged in the combustion tube 1. The outer side of the flame arrester ring 7 is fixed to the inner wall of the combustion tube 1, and the flame arrester ring 7 is located on the side of the flame arrester disk 52 away from the air distribution tube 5.

[0038] The implementation principle of a burner for a heater in an embodiment of the present application is as follows: in actual use, the fuel is fed into the mounting tube 11 through the fuel inlet pipe 12, and the fuel is fed to the oleophobic felt 3 through the mounting tube 11; then, the fuel is heated by the electric heating plug 4, and the fuel burns on the surface of the oleophobic felt 3 after the fuel temperature reaches the ignition point. At the same time, the combustion-supporting air enters the air distribution tube 5 through the air inlet 21, and is fed into the combustion tube 1 through the air distribution holes 51 and the air distribution gap 6 to ensure the normal combustion of the fuel. In addition, the flame-blocking plate 52 and the flame-blocking ring 7 cooperate to prevent the flame from flowing out quickly, thereby improving the sufficiency of fuel combustion.

[0039] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A burner for a heater, comprising a combustion tube (1) and a combustion chamber cover (2) located at one end of the combustion tube (1), characterized in that: An air inlet (21) is provided in the middle of the combustion chamber cover (2), an air distribution cylinder (5) is provided in the combustion cylinder (1), one end of the air distribution cylinder (5) is connected to the air inlet (21), and an air distribution hole (51) is provided on the side wall of the air distribution cylinder (5).

2. A burner for a heater according to claim 1, characterized in that: An oleophobic felt (3) is attached to the inner wall of the combustion tube (1), and the oleophobic felt (3) is located on a side of the combustion tube (1) close to the combustion chamber cover (2). The side of the combustion tube (1) close to the combustion chamber cover (2) is connected to an oil inlet pipe (12) for supplying oil to the oleophobic felt (3), and the air distribution hole (51) is arranged relative to the oleophobic felt (3).

3. A burner for a heater according to claim 2, characterized in that: The axis of the air distribution cylinder (5) is arranged along the axial direction of the combustion cylinder (1); the air distribution cylinder (5) is located in the middle of the combustion cylinder (1); the oleophobic felt (3) is arranged around the axis of the combustion cylinder (1); and a plurality of air distribution holes (51) are arranged at intervals around the axis of the air distribution cylinder (5).

4. A burner for a heater according to claim 1, characterized in that: The combustion chamber cover (2) is also provided with an air inlet hole (22), and a plurality of the air inlet holes (22) are arranged around the air inlet port (21).

5. A burner for a heater according to claim 3, characterized in that: A flame arresting disk (52) is provided on the side of the air distribution cylinder (5) facing away from the combustion chamber cover (2).

6. A burner for a heater according to claim 5, characterized in that: A protrusion (53) is formed on a side of the flame-blocking disc (52) close to the air distribution cylinder (5); a side of the protrusion (53) facing away from the flame-blocking disc (52) is fixed to a side of the air distribution cylinder (5) facing away from the combustion chamber cover (2); and a wind distribution gap (6) is formed between the flame-blocking disc (52) and the air distribution cylinder (5).

7. A burner for a heater according to claim 5, characterized in that: A flame arresting ring (7) is also provided in the combustion tube (1), and the flame arresting ring (7) is located on a side of the flame arresting disk (52) facing away from the air distribution tube (5).

8. A burner for a heater according to claim 2, characterized in that: A stabilizing ring (14) is fixed inside the combustion tube (1), the stabilizing ring (14) is located on a side of the oleophobic felt (3) facing away from the combustion chamber cover (2), and the stabilizing ring (14) is in contact with the oleophobic felt (3).

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