阅读说明：本技术 外转子永磁电机多级叶轮轴流通风装置 (Outer-rotor permanent magnet motor multi-stage impeller axis circulation wind apparatus ) 是由 孟庆华 孟宪营 张步勤 何顺席 王建国 宋正廷 岳昌华 李振峰 于 2019-09-26 设计创作，主要内容包括：外转子永磁电机多级叶轮轴流通风装置,由整流筒、前机座、后机座、中风筒和外转子永磁电机组成,整流筒与前机座固定连接,前机座与中风筒固定连接,中风筒与后机座固定连接,前机座和后机座用于外转子永磁电机多级叶轮轴流通风装置与基础固定,在外转子永磁电机的电机轴的前端设有前支撑盘,在前支撑盘上有前支撑片,在外转子永磁电机的电机轴的后端设有后支撑盘,在后支撑盘上有后支撑片,外转子永磁电机通过前支撑片和后支撑片固定在风筒中,在外转子永磁电机的电机外筒上串联安装多级叶轮,叶轮随电机外筒旋转产生风流；在中风筒的内壁上设有若干导叶。同一机座直径条件下,通过增减叶轮级数,可组合出更多不同功率、风量、风压的轴流通风机。(Outer-rotor permanent magnet motor multi-stage impeller axis circulation wind apparatus, by flow regulating barrels, preceding base, base afterwards, middle air duct and outer-rotor permanent magnet motor composition, flow regulating barrels are fixedly connected with preceding base, preceding base is fixedly connected with middle air duct, middle air duct is fixedly connected with rear base, preceding base and rear base are fixed for outer-rotor permanent magnet motor multi-stage impeller axis circulation wind apparatus with basis, front support disk is equipped in the front end of the motor shaft of outer-rotor permanent magnet motor, there is front support piece on front support disk, rear support disk is equipped in the rear end of the motor shaft of outer-rotor permanent magnet motor, there is rear support piece on rear support disk, outer-rotor permanent magnet motor is fixed in air duct by front support piece and rear support piece, be installed in series multi-stage impeller in the outer tube of the motor of outer-rotor permanent magnet motor, impeller generates distinguished and admirable with the outer tube of the motor rotation；Several guide vanes are equipped on the inner wall of middle air duct.Under the conditions of same base diameter, by increasing and decreasing impeller progression, the propeller fan of more different capacities, air quantity, wind pressure can be combined into.)

1. outer-rotor permanent magnet motor multi-stage impeller axis circulate wind apparatus, by flow regulating barrels (10), preceding base (11), rear base (14), Middle air duct (12) and outer-rotor permanent magnet motor (6) composition, flow regulating barrels (10) are fixedly connected with preceding base (11), preceding base (11) and Middle air duct (12) is fixedly connected, and middle air duct (12) is fixedly connected with rear base (14), and preceding base (11) and rear base (14) are used for Outer-rotor permanent magnet motor multi-stage impeller axis circulation wind apparatus is fixed with basis, which is characterized in that in outer-rotor permanent magnet motor (6) The front end of motor shaft (21) is equipped with front support disk (4), has front support piece (3) on front support disk (4), in outer-rotor permanent magnet motor (6) rear end of motor shaft (21) is equipped with rear support disk (8), there is rear support piece (9), external rotor permanent magnet on rear support disk (8) Motor (6) is fixed in air duct by front support piece (3) and rear support piece (9), the outer tube of the motor in outer-rotor permanent magnet motor (6) (18) be installed in series multi-stage impeller (5) on, and impeller (5) generates distinguished and admirable with the outer tube of the motor (18) rotation；In the interior of middle air duct (12) Wall is equipped with several guide vanes (7).

The wind apparatus 2. outer-rotor permanent magnet motor multi-stage impeller axis according to claim 1 circulates, which is characterized in that described Middle air duct (12) is multi-section structure, is connected between section and section by seam allowance flange (24), and flow regulating barrels (10) and preceding base (11) are logical Seam allowance flange (24) connection is crossed, preceding base (11) is connect with air duct (12) in an adjacent section by seam allowance flange (24), rear machine Seat (14) is connect with air duct (12) in an adjacent section by seam allowance flange (24).

The wind apparatus 3. outer-rotor permanent magnet motor multi-stage impeller axis according to claim 1 circulates, which is characterized in that described Outer-rotor permanent magnet motor (6) in addition to the outer tube of the motor (18) and motor shaft (21), composition further include stator core (20), stator around Group (17) and rotor magnetic steel (19), the both ends of motor shaft (21) pass through drive end bearing bracket (15), fore bearing (16) and rear end cap respectively (22), rear bearing (23) and the outer tube of the motor (18) rotation are fixed.

The wind apparatus 4. outer-rotor permanent magnet motor multi-stage impeller axis according to claim 1 circulates, which is characterized in that described Middle air duct (12) is that shoe structure is formed by connecting, and the piece number of shoe structure is 2-4.

The wind apparatus 5. outer-rotor permanent magnet motor multi-stage impeller axis according to claim 1 circulates, which is characterized in that described Guide vane (7) is evenly distributed on middle air duct (12) inner wall, arranges level-one guide vane below in every grade of impeller (5).

Technical field

The present invention relates to a kind of axis circulation wind apparatus, especially a kind of series multistage impeller external rotor permanent magnet motor shaft circulation Wind apparatus.

Background technique

Mine ventilation system is the important component of mine, tunnel digging, is the basic guarantee of Mine Safety in Production, office The effect for fanning ventilation blower is that fresh air is constantly transported to underground, tunnel front, dilutes and exclude pernicious gas and powder Dirt ensures the health and safety of operating personnel.

Traditional booster generallys use propeller fan, in order to obtain biggish air quantity and wind pressure, generally uses 2 Pole motor and to rotation mode, thus generate noise be up to 100~120 decibels, greatly exceed state specified standards, serious shadow The physical and mental health of operating personnel is rung.For this purpose, each producer takes some noise reduction measures, and increase and matched auxiliary equipment such as: eliminating the noise Device (diffusion barrel, silencer and retention tower) and sound absorption cotton etc., not only cause it is bulky, but also since acoustical cotton adheres to powder Dirt, sound-absorbing material will fail in 1 year or even some months.

In addition, for Counter rotating axial flow Fan, it is relatively high since the both stage impellers of counter-rotating fan are in close proximity, and again Fast (2950r/min) opposite direction rotation, relative linear velocity is very big, the noise characteristic for the blower that deteriorated significantly, and noise is very high；And And front and back stages power of fan, efficiency are difficult design matching, it is big rear class power of fan usually occur, causes the phenomenon that burning motor. Therefore, a kind of outer-rotor permanent magnet motor multi-stage impeller axis circulation wind apparatus is designed, is the current technical issues that need to address.

Summary of the invention

Technical problem to be solved by the invention is to provide a kind of outer-rotor permanent magnet motor multi-stage impeller axis circulation wind apparatus.

The present invention the technical solution to solve the technical problem is that:

Outer-rotor permanent magnet motor multi-stage impeller axis circulation wind apparatus, by flow regulating barrels, preceding base, rear base, middle air duct and outer rotor Magneto composition, flow regulating barrels are fixedly connected with preceding base, and preceding base is fixedly connected with middle air duct, and middle air duct is fixed with rear base Connection, preceding base and rear base are fixed for outer-rotor permanent magnet motor multi-stage impeller axis circulation wind apparatus with basis, in outer rotor The front end of the motor shaft of magneto is equipped with front support disk, has front support piece on front support disk, in outer-rotor permanent magnet motor The rear end of motor shaft is equipped with rear support disk, there is rear support piece on rear support disk, outer-rotor permanent magnet motor by front support piece and Rear support piece is fixed in air duct, and be installed in series multi-stage impeller in the outer tube of the motor of outer-rotor permanent magnet motor, and impeller is with motor Outer cylinder rotation generates distinguished and admirable；Several guide vanes are equipped on the inner wall of middle air duct.

As a preferred solution of the present invention, the middle air duct is multi-section structure, passes through seam allowance method between section and section By seam allowance flanged joint, preceding base is connected with air duct in an adjacent section by seam allowance flange for orchid connection, flow regulating barrels and preceding base It connects, air duct (12) passes through seam allowance flanged joint in rear base and an adjacent section.Seam allowance flange guarantees the concentricity of cylinders at different levels It is required that.

As a preferred solution of the present invention, the outer-rotor permanent magnet motor is in addition to the outer tube of the motor and motor shaft, Composition further includes stator core, stator winding and rotor magnetic steel, and the both ends of motor shaft pass through drive end bearing bracket, fore bearing and rear end respectively Lid, rear bearing and the outer tube of the motor rotation are fixed.

As a preferred solution of the present invention, the middle air duct is that shoe structure is formed by connecting, the piece of shoe structure Number is 2-4.

As a preferred solution of the present invention, the guide vane is evenly distributed on middle air duct inner wall, in every grade of impeller Level-one guide vane is arranged below.

The principle of the present invention analysis:

For the noise of propeller fan based on aerodynamic noise, aerodynamic noise divides rotational noise and eddy current crack again, the former and work 10 powers for taking turns peripheral speed are proportional, and the latter is that 6 powers are directly proportional.It is clear that the most effective approach for reducing noise is exactly Reduce impeller peripheral speed.

Therefore motor speed of the invention design is lower, and fan impeller revolving speed is dropped to from 3000r/min or so The left and right (1500-2000r/min), greatly reduces the generation of noise；Driving motor uses permanent magnet motor with outer rotor, utilizes it Outer cylinder rotation, the big feature of axial space, arrange multi-stage impeller, compared with obtaining higher wind pressure under the slow-speed of revolution；Multi-stage impeller is same Axis installation, rotating Vortex, adjust the blade quantity and setting angle of impellers at different levels, so that the power-balance and efficiency of impeller at different levels It is optimal.For the propeller fan of n grades of impellers, the wind pressure that every level-one fan is born is lower than the 1/n of blower press, improves leaf The working environment of wheel substantially increases ventilation blower bulk life time.

The features such as structure of the invention is compact, light-weight, high-efficient, the service life is long passes through increasing under the conditions of same base diameter Subtract impeller progression, the propeller fan of more different air quantity, wind pressure can be combined into, simplified fan type significantly；By two One outer-rotor permanent magnet motor is merged into the motor of rotation, using low speed, plural serial stage impeller, air quantity is big, wind pressure is high, noise Low, power density is higher.

Detailed description of the invention

Fig. 1 is multistage axial flow ventilation device structural map of the invention；

Fig. 2 is the right view of Fig. 1；

Fig. 3 is outer-rotor permanent magnet motor structure chart；

Fig. 4 is air duct component connection schematic diagram；

Fig. 5 is guide vane assembly structural schematic diagram；

In figure: 1. radome fairings, 2. bolts, 3. front support pieces, 4. front support disks, 5. impellers, 6. outer-rotor permanent magnet motors, 7. lead Leaf, 8. rear support pieces, 9. rear support disks, 10. flow regulating barrels, base before 11., air duct in 12., 13. connection bolts, base after 14., 15. drive end bearing bracket, 16. fore bearings, 17. stator winding, 18. the outer tube of the motor, 19. rotor magnetic steels, 20. stator cores, 21. motors Axis, 22. rear end caps, 23. rear bearings, 24. seam allowance flanges.

Specific embodiment

Outer-rotor permanent magnet motor multi-stage impeller axis circulation wind apparatus, by flow regulating barrels 10, preceding base 11, rear base 14, apoplexy Cylinder 12 and outer-rotor permanent magnet motor 6 form, and flow regulating barrels 10 are fixedly connected with preceding base 11, preceding base 11 and the fixed company of middle air duct 12 It connects, middle air duct 12 is fixedly connected with rear base 14, and preceding base 11 and rear base 14 are used for outer-rotor permanent magnet motor multi-stage impeller axis Circulation wind apparatus is fixed with basis, front support disk 4 is equipped in the front end of the motor shaft 21 of outer-rotor permanent magnet motor 6, in front support There is front support piece 3 on disk 4, rear support disk 8 is equipped in the rear end of the motor shaft 21 of outer-rotor permanent magnet motor 6, on rear support disk 8 There is rear support piece 9, outer-rotor permanent magnet motor 6 is fixed in air duct by front support piece 3 and rear support piece 9, in external rotor permanent magnet Be installed in series multi-stage impeller 5 in the outer tube of the motor 18 of motor 6, and impeller 5 generates distinguished and admirable with the rotation of the outer tube of the motor 18；In middle air duct 12 Inner wall be equipped with several guide vanes 7.

The middle air duct 12 is multi-section structure, is connected between section and section by seam allowance flange 24, flow regulating barrels 10 and preceding machine Seat 11 is connected by seam allowance flange 24, and preceding base 11 is connect with air duct 12 in an adjacent section by seam allowance flange 24, rear base 14 are connect with air duct 12 in an adjacent section by seam allowance flange 24.Seam allowance flange 24 guarantees the concentricity requirement of cylinders at different levels.

The outer-rotor permanent magnet motor 6 in addition to the outer tube of the motor 18 and motor shaft 21, composition further include stator core 20, Stator winding 17 and rotor magnetic steel 19, the both ends of motor shaft 21 pass through drive end bearing bracket 15, fore bearing 16 and rear end cap 22, rear axle respectively 23 are held to fix with the rotation of the outer tube of the motor 18.

The middle air duct 12 is that shoe structure is formed by connecting, and the piece number of shoe structure is 2-4.

The guide vane 7 is evenly distributed on middle 12 inner wall of air duct, and level-one guide vane is arranged behind every grade of impeller 5.