一种高效旋流燃烧器

Abstract

本实用新型属于燃烧器技术领域，尤其涉及一种高效旋流燃烧器，包括壳体、预混结构和再混结构；壳体一端形成带锥形口的喷火头，内部依次同轴嵌套燃料通道、一次风通道和二次风通道，喷火头沿径向开设有连通二次风通道与锥形口内壁的多个导入通道；预混结构设于燃料通道和一次风通道之间，用于燃料与一次风的初混合；再混结构设于燃料通道与一次风通道靠近喷火头的一端，用于燃料与初混合的混合气再次混合。该燃烧器通过预混和再混的分级混合方式，有效提高燃料与一次风的混合效果，避免混合不均匀及局部燃料浓度波动大的问题，保证燃烧充分且稳定。

Claims

1. A high efficiency cyclone burner characterized by, The high-efficiency rotary-flow burner comprises a shell (1) having a flame spouting head (3) with a tapered opening (2) at one end, and a fuel channel (4), a primary air channel (5) and a secondary air channel (6) coaxially nested in the shell (1) in sequence. A premixing structure is arranged between the fuel channel (4) and the primary air channel (5) and used for initial mixing of fuel and combustion-supporting gas in the primary air channel (5). A remixing structure is arranged at the end of the fuel channel (4) and the primary air channel (5) close to the flame spouting head (3) and used for secondary mixing of fuel and the initial mixed gas. The flame spouting head (3) is provided with a plurality of guide channels (7) along the radial direction, and the two ends of the guide channels (7) are respectively communicated with the secondary air channel (6) and the inner wall of the tapered opening (2).

2. The high-efficiency rotary-flow burner according to claim 1, wherein the primary air channel (5) is provided with spiral vanes (8), and the premixing structure comprises a plurality of first through holes (9) arranged on the inner wall of the fuel channel (4) and located between every two adjacent spiral vanes (8).

3. The high-efficiency rotary-flow burner according to claim 2, wherein the first through holes (9) are inclinedly arranged in the direction opposite to the airflow direction between every two adjacent spiral vanes (8).

4. The high-efficiency rotary-flow burner according to claim 2, wherein the end of the fuel channel (4) close to the flame spouting head (3) is provided with a nozzle (10), and the remixing structure comprises a plurality of second through holes (11) arranged on the nozzle (10) at equal intervals in the circumferential direction.

5. The high-efficiency rotary-flow burner according to claim 4, wherein the plurality of second through holes (11) are arranged in the circumferential direction in an inclined manner and used for spirally spouting fuel, and the spiral direction of the fuel spouted from the second through holes (11) is opposite to the spiral direction of the spiral vanes (8).

6. The high-efficiency rotary-flow burner according to claim 1, wherein the guide channels (7) are tangentially arranged along the radial direction with the inner wall of the tapered opening (2), and used for the secondary air to enter the tapered opening (2) to generate a spiral airflow, and the spiral direction of the spiral airflow is the same as the spiral direction of the spiral vanes (8).

7. The high-efficiency rotary-flow burner according to claim 6, wherein the secondary air channel (6) is provided with a rotary-flow device (12), and the rotary-flow device (12) comprises two fixed rings (120) and a plurality of guide vanes (121) arranged at equal intervals in the circumferential direction between the two fixed rings (120).

8. The high-efficiency rotary-flow burner according to claim 1, wherein an annular cavity (13) is arranged between the primary air channel (5) and the secondary air channel (6), and an ignition guide wire (14) is arranged in the annular cavity (13), one end of the ignition guide wire (14) extends out of the annular cavity (13) to be connected with an igniter (15), and the other end extends out of the inner wall of the tapered opening (2) to form a discharge end (16); wherein the discharge end (16) is located at the side of the guide channel (7) close to the remixing structure. ​ ​ ​ ​ ​ ​ ​ ​ ​

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