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CN-121993790-A - Gas boiler low-nitrogen burner convenient to adjust air inflow

CN121993790ACN 121993790 ACN121993790 ACN 121993790ACN-121993790-A

Abstract

The invention discloses a low-nitrogen burner of a gas boiler, which is convenient for adjusting the air inflow and relates to the technical field of boilers, and comprises a motor, an air inlet pipe and a driving mechanism, wherein the air inlet pipe is internally provided with a first adjusting mechanism, the driving mechanism comprises a fixed disc coaxially fixed with an output shaft of the motor, the outer edge of the side wall of the fixed disc is provided with a plurality of fixed frames distributed along the circumferential array of the fixed disc, when the rotating speed of the motor is increased, a balancing weight is driven to move outwards by centrifugal force through combining the rotating speed regulation and the opening and closing regulation of an air door, and the axial movement of a spiral rod is driven by a first telescopic rod, a fixed pipe and a second telescopic rod, and the spiral rod is matched with a limiting column to convert the linear movement into the rotation of a first annular fluted disc, so that the deflection angle of all blades is driven to be integrally and synchronously changed, a sensor and a complex circuit are omitted, the occupied volume and the manufacturing cost of the system are reduced, and the air inflow can be adjusted steplessly in real time according to the air inflow requirement, and different air inflow requirements are met.

Inventors

  • HUO XIAOHUA

Assignees

  • 徐州华至燃控科技有限公司

Dates

Publication Date
20260508
Application Date
20260210

Claims (8)

  1. 1. The utility model provides a gas boiler low nitrogen combustor convenient to adjust air input, includes motor (10), intake pipe (11) and actuating mechanism, is provided with adjustment mechanism one in intake pipe (11), its characterized in that: The driving mechanism comprises a fixed disc (12) coaxially fixed with an output shaft of the motor (10), a plurality of fixed frames (13) distributed along the circumferential array of the fixed disc (12) are arranged on the outer edge of the side wall of the fixed disc (12), and balancing weights (141) are slidably arranged in each fixed frame (13); One side of each balancing weight (141) close to the axle center of the fixed disc (12) is connected with a first telescopic rod (14), the fixed ends of a plurality of first telescopic rods (14) are connected with the same supporting block (121), one side wall of the supporting block (121) far away from the motor (10) is horizontally fixed with a second telescopic rod (16), the telescopic end of the second telescopic rod (16) is connected with a spiral rod (17), and the outer arc wall of the first telescopic rod (14) and the outer arc wall of the second telescopic rod (16) are connected with the same fixed pipe (15); The first adjusting mechanism comprises a shell (20) coaxially arranged in the air inlet pipe (11), a connecting cylinder is coaxially arranged on one side of the adjusting mechanism, which is close to the driving mechanism, and a plurality of limit posts (201) which are distributed in an annular array with respect to the axial direction and extend along the radial direction of the connecting cylinder are arranged on one side of the inner arc wall of the connecting cylinder, which is close to the screw rod (17); One side of the shell (20) close to the driving mechanism is coaxially and rotatably provided with a first annular fluted disc (21) which is fixedly connected with the connecting cylinder coaxially, one side of the first annular fluted disc (21) far away from the driving mechanism is meshed with a plurality of first bevel gears (22) which are distributed at equal intervals along the circumferential direction of the first annular fluted disc, and one side wall of the first bevel gear (22) far away from the shell (20) is coaxially connected with a blade whole (23).
  2. 2. The low-nitrogen burner of a gas boiler convenient to adjust air inflow of claim 1, wherein the length direction of the fixed frame (13) is radially consistent with that of the fixed disc (12), a fixed cylinder is coaxially fixed at the center of a side wall of the fixed disc (12) far away from the motor (10), one end of the fixed cylinder far away from the fixed disc (12) is coaxially fixed on the shell (20), one end of the telescopic rod I (14) far away from the balancing weight (141) penetrates through the fixed frame (13) and the fixed cylinder to the inside of the fixed cylinder, and the supporting block (121) is coaxially arranged in the fixed cylinder.
  3. 3. A low-nitrogen burner of a gas boiler convenient for adjusting the air inflow of a gas boiler according to claim 1, wherein a filter screen (111) is arranged in the air inlet pipe (11) and positioned on one side, far away from the driving mechanism, of the adjusting mechanism, a fixing frame (112) capable of axially sliding along the air inlet pipe (11) is coaxially connected with one side wall, far away from the driving mechanism, of the filter screen (111), one end, far away from the motor (10), of a screw rod (17) penetrates through the shell (20) and is fixedly connected with the middle part of the fixing frame (112), one end of a fixing pipe (15) is connected to an outer arc wall of one end, far away from the axis of a fixing disc (12), of a telescopic rod I (14), and the other end of the fixing pipe I is fixed on an outer arc wall of one end, close to a supporting block (121), of a telescopic rod II (16).
  4. 4. The low-nitrogen burner of a gas boiler convenient for adjusting the air inflow according to claim 1, wherein a plurality of spiral plates which are distributed in an annular array with respect to the axial direction are fixed on the outer arc wall of the spiral rod (17), the plurality of spiral plates are in one-to-one correspondence with the plurality of limit posts (201) and are in sliding contact with each other, a support rod (221) is coaxially and rotatably connected with one side wall of the bevel gear I (22) close to the inside of the shell (20), one end of each support rod (221) far away from the bevel gear I (22) is rotatably connected with the same fixing ring, and the fixing ring is coaxially fixed on the inner wall of one side of the shell (20) far away from the driving mechanism.
  5. 5. The low-nitrogen burner of a gas boiler convenient for adjusting the air inflow according to claim 1, wherein the vane body (23) comprises a storage barrel which is coaxially and fixedly arranged with the bevel gear I (22), vanes are arranged on the outer arc wall of the fixed barrel in an extending mode along the two opposite radial sides of the fixed barrel, the vane body (23) is in a fan shape, and when the vanes on the vane body (23) are positioned in the same vertical plane, the end portions of the vane body (23) are mutually abutted.
  6. 6. The low-nitrogen burner of a gas boiler convenient for adjusting the air inflow according to claim 5, wherein the adjusting mechanism II is arranged in a storage barrel on the vane body (23), the adjusting mechanism II comprises an annular fluted disc II (30) coaxially arranged on one side wall of the bevel gear I (22) far away from the inside of the shell (20), and one side of the annular fluted disc II (30) far away from the bevel gear I (22) is meshed with the bevel gear II (31).
  7. 7. The low-nitrogen burner of a gas boiler convenient for adjusting the air inflow according to claim 6, wherein a plurality of cleaning strips (34) are rotatably arranged on the outer wall of the storage barrel on the blade whole (23) along the axial length direction, a transmission gear (33) is fixed at the center of one side wall of each cleaning strip (34) close to the storage barrel, the transmission gear (33) is arranged in the storage barrel, and the same side of the bevel gear (22) close to the storage barrel is rotatably connected with the same rotation connecting rod (32).
  8. 8. A low nitrogen burner of a gas boiler convenient for adjusting the air inflow according to claim 1, wherein a sliding block (231) is rotatably arranged at the center of a side wall of the vane body (23) far away from the bevel gear I (22), and the sliding block (231) slides on the inner arc wall of the air inlet pipe (11).

Description

Gas boiler low-nitrogen burner convenient to adjust air inflow Technical Field The invention relates to the technical field of boilers, in particular to a low-nitrogen burner of a gas boiler, which is convenient for adjusting the air inflow. Background The gas boiler is a heat energy device which uses gas fuel such as natural gas, liquefied petroleum gas and the like as energy sources, converts chemical energy into heat energy through combustion, and further heats water or generates steam, and the core working components of the gas boiler comprise a burner, a hearth, a heat exchange system and a control system, air is sent into the burner through an air inlet pipe, the fuel is ignited after being mixed with fuel accurately supplied by a fuel valve, generated high-temperature flue gas flows through a heat exchange surface to transfer heat to a water medium, and accurate adjustment of air inlet quantity is important to ensure full combustion of fuel, improve thermal efficiency, control pollutant emission and guarantee operation safety. The traditional air inlet regulation mainly depends on the mechanical air door matched with an independent electric actuator or a stepping motor for driving, and forms closed loop control by means of electronic feedback such as an oxygen sensor, a flowmeter and the like, although the scheme can realize basic regulation, the reliability of the electronic sensor and a complex control circuit in high-temperature, vibration and humid environments of long-term operation of a boiler is obviously reduced, the failure rate is high, the occupied space of the system is large, the manufacturing and maintenance cost is high, the traditional mechanical air door is limited in regulation range and difficult to finely regulate, the existing electronic air door needs additional arrangement structure and assembly, the occupied space and the number of electronic controlled devices are increased, and the initial debugging time and the maintenance cost and the use cost in the later stage are also increased. In view of this, the present application has been made. Disclosure of Invention The invention aims to provide a low-nitrogen burner of a gas boiler, which is convenient for adjusting the air inflow, so as to solve the problems in the background technology. In order to solve the technical problems, the low-nitrogen burner of the gas boiler convenient for adjusting the air inflow comprises a motor, an air inlet pipe and a driving mechanism, wherein the air inlet pipe is internally provided with an adjusting mechanism I, the driving mechanism comprises a fixed disc coaxially fixed with an output shaft of the motor, the outer edge of the side wall of the fixed disc is provided with a plurality of fixed frames distributed along the circumferential array of the fixed disc, and a balancing weight is slidably arranged in each fixed frame; A first telescopic rod is connected to one side of each balancing weight, which is close to the axis of the fixed disc, a plurality of fixed ends of the first telescopic rods are connected with the same supporting block, a second telescopic rod is horizontally fixed to one side wall of the supporting block, which is far away from the motor, of the supporting block, a spiral rod is connected to the telescopic end of the second telescopic rod, and the outer arc wall of the first telescopic rod and the outer arc wall of the second telescopic rod are connected with the same fixed pipe; The first adjusting mechanism comprises a shell coaxially arranged in the air inlet pipe, a connecting cylinder is coaxially and rotatably arranged on one side of the adjusting mechanism, which is close to the driving mechanism, and a plurality of limit posts which are distributed in an annular array with respect to the axial direction and extend along the radial direction of the adjusting mechanism are arranged on one side of the arc wall, which is close to the spiral rod, of the connecting cylinder; One side of the shell, which is close to the driving mechanism, is coaxially and rotatably provided with a first annular fluted disc which is fixedly connected with the connecting cylinder in a coaxial way, one side of the first annular fluted disc, which is far away from the driving mechanism, is meshed with a plurality of first bevel gears which are distributed at equal intervals along the circumferential direction of the first annular fluted disc, and one side wall of the first bevel gear, which is far away from the shell, is coaxially connected with the whole blade. Further, fixed frame length direction is radial unanimous with the fixed disk, and the fixed disk is kept away from the coaxial fixed cylinder of a side wall center department of motor, and the fixed cylinder is kept away from the one end coaxial fixed of fixed disk and is fixed in the casing, and the telescopic link one is kept away from the one end of balancing weight and is run through fixed frame and fixed cylinder to the in