WO2023019843A1 - Ventilateur à écoulement axial à suspension magnétique ayant un régulateur d'aube directrice - Google Patents

Ventilateur à écoulement axial à suspension magnétique ayant un régulateur d'aube directrice Download PDF

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Publication number
WO2023019843A1
WO2023019843A1 PCT/CN2021/140754 CN2021140754W WO2023019843A1 WO 2023019843 A1 WO2023019843 A1 WO 2023019843A1 CN 2021140754 W CN2021140754 W CN 2021140754W WO 2023019843 A1 WO2023019843 A1 WO 2023019843A1
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WIPO (PCT)
Prior art keywords
motor
guide vane
ring
impeller
assembly
Prior art date
Application number
PCT/CN2021/140754
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English (en)
Chinese (zh)
Inventor
姚莹海
钟仁志
袁军
韩春江
Original Assignee
鑫磊压缩机股份有限公司
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Publication of WO2023019843A1 publication Critical patent/WO2023019843A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/082—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provision for cooling the motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/083—Sealings especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid pumps
    • F04D29/542—Bladed diffusers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
    • F04D29/584—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps cooling or heating the machine

Definitions

  • the present application relates to the technical field of axial flow fans, in particular to a magnetic levitation axial flow fan with a guide vane regulator.
  • Axial flow fans are usually used in occasions with high flow requirements, including fan impellers and casings, and are commonly used by companies in working conditions.
  • the axial flow fan often needs to adjust the flow rate or pressure of the working fluid during operation, and the accuracy of the adjustment is high.
  • the motor and fan part of the axial flow fan are usually set separately, the heat dissipation capacity of the motor is poor, and the air volume adjustment of the axial flow fan is inconvenient, and the adjustment is not uniform enough.
  • the air volume adjustment is realized by rotating the entire adjustment plate, and the air volume is adjusted from the adjustment plate. Outflow from both sides, the air intake during the adjustment process is unstable.
  • the axial flow fan in the prior art also has the problem that heat dissipation of the motor part is not easy.
  • the motor part of the axial flow fan has no air duct, and the heat dissipation efficiency is low, which affects the service life of the axial flow fan.
  • the present invention provides a magnetic levitation axial flow fan with a guide vane regulator, which can stably adjust the air volume of the axial flow fan, and the adjustment is stable; it can improve the heat dissipation of the motor when the external environment temperature is low When the external ambient temperature is high, the heat intake in the motor can be reduced to ensure the heat dissipation efficiency of the motor components in the axial flow fan.
  • the present invention adopts the following technical solutions.
  • a magnetic levitation axial flow fan with a guide vane regulator which is characterized in that it includes a fan assembly, a motor assembly and an inlet guide vane regulator arranged in sequence in a straight line;
  • the outer side of the motor assembly is provided with a motor barrel
  • the fan assembly includes a stationary impeller and a moving impeller, the stationary impeller is fixedly connected to one end of the motor barrel; the moving impeller and the stationary impeller are adjacently arranged;
  • the motor assembly includes a main shaft, a rotor assembly and a stator assembly, the moving impeller is fixedly connected to the main shaft, and the main shaft drives the moving impeller to rotate;
  • the end of the motor barrel facing the inlet guide vane regulator is provided with an air intake fairing, the air intake fairing is provided with an air inlet, one end of the main shaft is fixed with a heat dissipation impeller facing the air inlet, and the motor barrel is provided with a corresponding The cooling channel of the air inlet; the air inlet is equipped with a matching control valve.;
  • the inlet guide vane regulator includes a housing fixedly connected to one end of the motor barrel, and the housing is provided with several inlet guide vanes along its circumference.
  • the inlet guide vanes include passive guide vanes and active guide vanes connected to drive elements.
  • the outer side is provided with a transmission pinion, and a transmission ring gear that cooperates with all the transmission pinions is rotated on the housing.
  • the application has a large flow rate and high transmission efficiency.
  • the motor assembly inside the motor barrel can directly enter the air, and the heat dissipation inside the motor assembly can be realized through the air intake, and the control valve can block the cooling flow under high temperature conditions.
  • the valve is controlled to open under low temperature conditions, which facilitates the internal heat dissipation of the motor and improves the heat dissipation efficiency;
  • the inlet guide vane regulator rotates the angle of the inlet guide vane, and the airflow will follow the direction of the axial inlet
  • the channel at a certain angle circulates, and the fluid enters the motor barrel after passing through the inlet guide vane regulator.
  • the pressure and temperature are reduced, the flow rate is increased, and the thermal potential energy is converted into kinetic energy.
  • the application has a large flow rate and high transmission efficiency. It can adjust the speed according to the working conditions and realize the adjustment of pressure and flow rate, which can save more electric energy and provide better protection. Fan; the coordination of multiple inlet guide vanes improves the stability of wind power regulation.
  • control valve is arranged on the side of the air intake fairing facing the motor assembly, the control valve includes a limit ring that is rotated and arranged on the air intake cowl, the limit ring is provided with a matching rotary drive assembly, and the limit ring is A number of guide rods are provided, and a valve plate is slid on the guide rod, and the valve plate is located between the guide rod and the air intake shroud; The shape of the chute is spiral.
  • the limit ring can be driven to rotate, and the limit ring and the guide rod rotate. Due to the helical fit between the valve plate and the chute, the valve plate will spirally protrude along the chute when the limit ring rotates.
  • valve plates are combined to form a spherical surface, and the air inlet is sealed by the spherical surface.
  • the guide rod also has a supporting function. When the valve is opened, the control valve can be hidden on the back side of the air intake fairing, with Very high security.
  • worm teeth are provided on the outer circumference of the limiting ring, and the driving and rotating assembly includes several worms arranged on the air intake fairing to cooperate with the limiting ring. Because the limit ring cooperates with the worm through the worm gear, the limit ring has a self-locking function. When the limit ring cannot rotate, the position of the valve plate in the chute is also fixed, so the self-locking of the valve plate can be formed, and the control valve can be improved. reliability.
  • two intersecting edges are provided on the outer end of the valve plate, one of which is provided with a limiting sealing groove, and the other edge is provided with a limiting sealing protrusion, and a sealing strip is provided in the limiting sealing groove.
  • the space-limiting sealing groove and the space-limiting sealing protrusion can cooperate with each other.
  • the several guide rods converge at one point, and the several guide rods are arranged in a circular array around the axis of the limiting ring.
  • the outer ends of the guide rod meet and fix at one point, which is not easy to deform, and ensures the supporting function of the guide rod.
  • the guide rod includes a connecting section and a closing section positioned at the upper end of the connecting section, the connecting section, the closing section are coplanar with the axis of the air intake fairing, the connecting section and the closing section are all arc-shaped, and the radius of the closing section is
  • the radius of the connecting section is smaller than that of the connecting section, the junction of the closing section and the connecting section is opposite to the edge of the air inlet, and the closing section protrudes out of the air inlet.
  • the spherical surface formed by the closing section is located outside the spherical surface formed by the connecting section, and plays a role of supporting the valve sheet when the valve sheet is stretched out.
  • the stationary impeller includes an outer ring fixed to the motor barrel, an inner ring is arranged inside the outer ring, and a blade body is arranged between the outer ring and the inner ring, and the fan assembly also includes an outer ring fixed on the inner ring.
  • the fairing is fixed with an expansion tube on the outer ring.
  • the static impeller not only has the function of guiding the fluid, but also serves as a connection support, connecting the fairing and the motor barrel, and is beneficial to realize the rotation and sealing of the moving impeller; after the fluid passes through the stationary impeller, it passes through the fairing and enters the diffuser tube.
  • the kinetic energy of the fluid is converted into static pressure energy, which makes the air output of the axial flow fan more stable.
  • the rotor assembly is integrated inside the main shaft, and magnetic suspension bearings are respectively provided between both ends of the main shaft and the motor barrel.
  • Active magnetic suspension bearing technology is used to realize rotor suspension by electromagnetic force, no contact, no friction, no lubricating oil, and long service life.
  • both ends of the motor barrel are provided with end covers matching the motor assembly, and the end cover and the main shaft are rotatably connected by bearings, and the cooling channel includes cooling holes provided on the end cover and a cooling gap provided between the stator assembly and the main shaft , the cooling flow channel also includes an inner cavity of the motor barrel located between the air inlet and the cooling hole, and between the cooling hole and the cooling gap, and the motor barrel is provided with an air outlet hole matching the cooling flow path.
  • the motor cylinder includes an inner cylinder and an outer cylinder, a number of supporting guide columns are arranged between the inner cylinder and the outer cylinder, the motor assembly is arranged inside the inner cylinder, and the support guide columns are provided to communicate with the inner cylinder and the inner cylinder.
  • the motor barrel plays the role of supporting and installing the motor assembly and positioning the connection line of the magnetic suspension bearing. It can also be used for the airflow conduction of the axial flow fan, and has good functionality.
  • the movable impeller includes a connecting inner disc, a connecting plate, a connecting outer ring and a moving blade body
  • the connecting inner disc is fixedly connected to the main shaft, and the outer side of the outer ring is connected to the outer side of the inner wheel ring of the stationary impeller; the inner disc and the outer ring are connected through
  • the connecting plate is connected, the connecting plate and the connecting outer ring form a number of moving blade bodies on the connecting plate, and a stepped surface is formed between the connecting outer ring and the connecting plate, and a sealing ring is provided on the stepped surface in contact with the inner side of the connecting outer ring.
  • the connecting outer ring and the sealing ring are arranged to rotate relative to each other, and the outer periphery of the sealing ring is provided with sealing teeth that cooperate with the inner side of the connecting outer ring.
  • the setting of the sealing ring realizes the rotational sealing between the moving impeller and the motor assembly, prevents the airflow in the air duct of the axial flow fan from dissipating heat to the motor assembly and affects the flow of the axial flow fan, and ensures the flow control of the fan is reliable.
  • a tie rod is threaded on the main shaft, and the screw-in rotation direction between the tie rod and the main shaft is opposite to that of the moving impeller; a fixing hole is provided in the moving impeller, and limit steps are respectively arranged at both ends of the fixing hole, and the pulling rod passes through.
  • the fixing hole the diameter of the tie rod is smaller than that of the fixing hole, the tie rod is provided with a limit ring whose diameter matches the fixing hole, and the outer end of the tie rod is provided with a pre-tightening nut.
  • the movable impeller is connected by a tie rod, and the movable impeller and the main shaft are connected together through the tie rod.
  • the pulling force of the tie rod makes the moving end face of the impeller closely match the end face of the main shaft.
  • the threads are connected together, and the screwing direction of the threads is opposite to that of the rotor, which realizes self-locking during the working process and improves reliability.
  • the invention has the following beneficial effects: large flow rate, high transmission efficiency, through the arrangement of the cooling channel, the motor assembly inside the motor barrel can directly enter the air, and the heat dissipation inside the motor assembly can be realized through the air intake, which can be used in high temperature conditions.
  • the limit ring and the guide rod rotate. Due to the helical fit between the valve plate and the chute, the valve plate will spirally protrude along the chute when the limit ring rotates, so that several valve plates are combined to form
  • the spherical surface seals the air inlet through the spherical surface.
  • the guide rod also has a supporting function.
  • the control valve When the valve is opened, the control valve can be hidden on the back side of the air intake fairing, which has high safety; When closed, the cooling flow channel can be closed, thereby preventing the motor from overheating caused by hot air entering the cooling channel in the high-temperature working environment, and ensuring the heat dissipation efficiency of the motor in the low-temperature environment.
  • Fig. 1 is a structural schematic diagram of the present invention.
  • Fig. 2 is a schematic structural diagram of the motor assembly of the present invention.
  • Fig. 3 is a schematic structural view of the stationary impeller in the present invention.
  • Fig. 4 is a side view of the stationary impeller in the present invention.
  • Fig. 5 is a schematic structural view of the inlet guide vane in the present invention.
  • FIG. 6 is a right side view of FIG. 5 .
  • Fig. 7 is a schematic structural view of the motor barrel in the present invention.
  • FIG. 8 is an enlarged schematic view of point A in FIG. 1 .
  • Fig. 9 is a structural schematic diagram of the connection between the main shaft and the moving impeller in the present invention.
  • Fig. 10 is a schematic diagram of the structure of the air intake fairing and the control valve when the control valve is opened in the present invention.
  • Fig. 11 is a structural schematic diagram of the inner surface of the air intake fairing and the control valve when the control valve is closed in the present invention.
  • Fig. 12 is a structural schematic diagram of the connection between the mounting ring and the limiting ring in the present invention.
  • Fig. 13 is a schematic structural view of the valve plate in the present invention.
  • a magnetic levitation axial flow fan with a guide vane adjuster includes a fan assembly, a motor assembly and an inlet guide vane 41 adjuster which are sequentially arranged in a straight line.
  • the axial flow fan is equipped with other monitoring equipment such as anemometer or flowmeter, which can automatically control the inlet guide vane regulator to adjust the air volume.
  • a motor cylinder 1 is arranged outside the motor assembly; the motor cylinder 1 includes an inner cylinder 101 and an outer cylinder 102, and several supporting guide posts 103 are arranged between the inner cylinder 101 and the outer cylinder 102, and the motor assembly is arranged inside the inner cylinder 101 to support
  • the deflector column 103 is provided with a wiring hole 104 connecting the inside of the inner cylinder 101 and the outside of the outer cylinder 102.
  • the outer cylinder 102 is provided with a base plate 105.
  • the base plate 105 is provided with two symmetrical pieces at both ends of the outer cylinder 102.
  • the base plate The middle position of 105 is provided with an empty groove 106 . Both ends of the motor barrel 1 are provided with end caps 107 that match the motor assembly.
  • the end caps 107 and the main shaft 3 are connected through bearing rotation.
  • the set support guide columns 103 form a fluid channel, and the fluid can take away part of the heat of the motor during the conveying process, which enhances the heat dissipation effect of the whole machine; five support guide columns 103 are provided to make the load distribution of the motor cylinder 1 It is more reasonable; the supporting guide column 103 simulates the leading edge and the trailing edge through the method of computational fluid dynamics, which reduces the resistance of the supporting column to the fluid to the greatest extent;
  • the number of wiring holes 104 is three, respectively Motor power line outlet hole, front magnetic bearing outlet hole, rear magnetic bearing outlet hole, the number of outlet holes should not be less than three, otherwise the motor power line will interfere with other lines, thereby affecting the performance of the motor; the base plate 105 and the motor
  • the cylinder 1 adopts an integrated structure, which is integrally formed during casting, which makes the overall structure more reasonable, further enhances the rigidity and stability of the motor cylinder 1, and enhances the vibration resistance of the whole
  • the fan assembly includes a stationary impeller 200 and a moving impeller 201, the stationary impeller 200 is fixedly connected to one end of the motor barrel 1; the moving impeller 201 and the stationary impeller 200 are adjacently arranged; the stationary impeller 200 includes an outer ring 202 fixed to the motor barrel 1, and the motor barrel One end of 1 is screw connected with a connecting cover, and the outer ring 202 of the stationary impeller 200 is fixed on the connecting cover by screws.
  • the outer ring 202 is provided with an inner ring 203, and a blade body 204 is arranged between the outer ring 202 and the inner ring 203.
  • the fan assembly also includes a fairing 205 fixed on the inner ring 203. Dilation tube 206.
  • the inner wall of the expansion tube 206 is in the shape of a circular frustum.
  • the moving impeller 201 and the stationary impeller 200 must maintain an appropriate gap, otherwise the moving impeller 201 cannot rotate, but the existence of this axial gap makes the fluid scattered in the gap between the moving and stationary blades , resulting in air leakage loss
  • the stationary impeller 200 is provided with a mounting groove 207 for positioning the sealing ring 208 in conjunction with the step surface, which can effectively reduce gas leakage; 209.
  • the outer ring 209 of the moving blade is made of PEEK material.
  • the PEEK material Due to the characteristics of the PEEK material, it can protect the blade.
  • the chamfering of the blade top and the leading edge of the blade root of the stationary impeller 200 can effectively reduce the stress concentration effect on the blade root and effectively reduce the fatigue damage and fracture failure of the blade; Hollowing treatment, under the premise of ensuring the performance of the moving impeller 201, the weight is the lightest.
  • the movable impeller 201 includes a connecting inner disk 210, a connecting plate 211, a connecting outer ring 212 and a moving blade body 213.
  • the connecting inner disk 210 is fixedly connected to the main shaft 3, and the main shaft 3 is threadedly connected with a pull rod 214.
  • connection inner disc 210 is provided with a fixing hole 215, and the two ends of the fixing hole 215 are respectively provided with limit steps, and the pull rod 214 passes through the fixing hole 215, and the diameter of the tie rod 214 is smaller than that of the fixing hole 215 ,
  • the pull rod 214 is provided with a limit ring 216 whose diameter matches the fixing hole 215, and the outer end of the pull rod 214 is provided with a pre-tightening nut 217.
  • the outer side of the connecting outer ring 212 is joined to the outer side of the inner wheel ring of the stationary impeller 200; the connecting inner disc 210 and the connecting outer ring 212 are connected through the connecting plate 211, and the connecting plate 211 and the connecting outer ring 212 form a connecting disc with several moving blades body 213, a stepped surface is formed between the connecting outer ring 212 and the connecting plate 211, and a sealing ring 208 arranged in contact with the inner side of the connecting outer ring 212 is arranged on the stepped surface, and the connecting outer ring 212 and the sealing ring 208 are relatively rotated, and the sealing ring 208
  • the outer circumference of the outer ring is provided with sealing teeth that are connected to the inner side of the outer ring 212 .
  • the seal ring 208 connecting the two ends of the outer ring 212 is respectively fixedly connected to the end cover 107 and the inner ring 203 by screws.
  • the moving impeller 201 is made of carbon fiber plus resin composite material. Compared with traditional metal alloys, the weight is reduced and the wear resistance and corrosion resistance are improved. Weight-reducing holes are formed between the connecting plates 211, and the weight-reducing holes are distributed on the wheel disc in a circular manner, so that the impeller maintains good aerodynamic performance while greatly reducing the weight, effectively reducing the vibration of the rotor in the rotating state, and improving the balance and performance of the impeller. Stability; when the magnetic levitation motor is turned off, the suspended rotor will fall on the protective bearing. The smaller the weight of the rotor, the longer the service life of the bearing; the front edge of the blade root of the moving impeller 201 is chamfered, which can effectively reduce the blade root The stress concentration effect effectively reduces the fatigue damage and fracture failure of the blade.
  • the motor assembly includes a main shaft 3 , a rotor assembly 31 and a stator assembly 32 , the stator assembly 32 is fixed in the motor barrel 1 , and the stator assembly 32 includes an iron core and a winding.
  • the movable impeller 201 is fixedly connected to the main shaft 3, and the main shaft 3 drives the movable impeller 201 to rotate;
  • the rotor assembly 31 is integrated inside the main shaft 3, and the main shaft 3 includes a left half shaft 301 and a right half shaft 302, and the left half shaft 301 and the right half shaft 302
  • a cylindrical permanent magnet 303 is arranged between, and a first magnetic isolation ring 304 and a second magnetic isolation ring 305 are respectively arranged between the permanent magnet 303, the left half shaft 301, and the right end semi shaft 302, and the permanent magnet 303 is provided with two ends.
  • the left half-shaft 301 is provided with a front-end spacer 307, a radial magnetic bearing rotor 308, and a radial bearing tested body 309 from the permanent magnet protection sleeve in sequence;
  • the right end shaft shoulder 310 is provided with a thrust plate 311, a rear end spacer 312, a radial magnetic bearing rotor 308 and a radial magnetic bearing tested body in sequence.
  • Magnetic suspension bearings 313 are respectively provided between both ends of the main shaft 3 and the motor barrel 1 .
  • One end of the motor barrel 1 facing the inlet guide regulator is provided with an air intake fairing 314, and the air intake fairing 314 is provided with an air inlet 315, and one end of the main shaft 3 is fixedly provided with a cooling impeller 316 facing the air inlet 315, and the motor barrel 1 is provided with a cooling channel corresponding to the air inlet 315.
  • the cooling flow path includes the cooling hole 317 provided on the end cover 107 and the cooling gap 318 provided between the stator assembly 32 and the main shaft 3, the cooling flow path also includes the cooling hole 317 and the cooling
  • the inner cavity 319 of the motor barrel between the gaps 318 and the motor barrel 1 are provided with air outlet holes 320 matching the cooling channels.
  • the air inlet is provided with a matching control valve.
  • the control valve is arranged on the side of the air intake fairing facing the motor assembly.
  • the control valve includes rotating the limit ring 5 arranged on the air intake fairing 314, and the air intake fairing passes through the screw.
  • a mounting ring 511 is fixedly provided, and the cross-sectional shape of the mounting ring is "L". There is an arc surface that fits the inner wall of the intake fairing.
  • a sliding ring 512 is provided on the outside of the vertical ring.
  • the outer end of the sliding ring 5112 is spherical in shape.
  • the limit ring 5 is provided with a matching rotating drive assembly, and the outer circumference of the limit ring is provided with worm teeth, and the drive rotation assembly includes two worms arranged on the intake fairing to cooperate with the limit ring.
  • the worm is equipped with a micro motor 513, which drives the worm to rotate through the rotation of the micro motor.
  • the micromotor is installed on the mounting ring, and the two worms and the corresponding micromotors are arranged symmetrically about the axis of the mounting ring.
  • Eight guide rods 501 are arranged on the limit ring 5, and the eight guide rods converge at one point, and the eight guide rods are arranged in a circular array around the axis of the limit ring.
  • the guide bar includes a connecting section 509 and a closing section 510 located at the upper end of the connecting section.
  • the connecting section and the closing section are coplanar with the axis of the intake fairing.
  • the shapes of the connecting section and the closing section are arc-shaped, and the radius of the closing section is less than The radius of the connecting section, the concentric setting of the connecting section and the intake fairing.
  • the junction of the closed section and the connecting section is opposite to the edge of the air inlet, and the closed section extends out of the air inlet 315 .
  • the outer ends of the eight closed sections are provided with spherical connecting discs on the outside to improve the overall strength of the guide rod.
  • a valve plate 502 is slidably arranged on the guide rod, and the valve plate is located between the guide rod and the air intake shroud; a matching sliding column 503 and a chute 504 are arranged on the valve plate and the air intake shroud, and the chute’s
  • the shape is spiral.
  • the outer end of the sliding column is hemispherical.
  • the sliding column is located at the lower end of the valve plate; two sliding sleeves 514 are provided inside the valve plate, and the sliding sleeves 514 are sleeved on the outside of the guide rod 501, and the two sliding sleeves cooperate with the sliding column to form a reliable sliding positioning.
  • the eight valve plates on the eight guide rods can be combined into a spherical surface covering the outside of the closed section.
  • the chute can also be a straight groove or an arc groove provided with an inclination except the helical shape, as long as the axial movement guide and the radial movement guide can be provided simultaneously.
  • the inlet guide vane 41 regulator includes a housing 4 fixedly connected to one end of the motor barrel 1, and the housing 4 is in the shape of a circular tube.
  • the casing 4 and the motor barrel 1 are connected by a flange.
  • the casing 4 is provided with several inlet guide vanes 41 along its circumference.
  • the inlet guide vanes 41 include a passive guide vane 42 and an active guide vane 43 connected with a driving element, and the driving element adopts a servo motor.
  • the outer side of the inlet guide vane 41 is provided with a transmission pinion 401
  • the casing 4 is provided with a transmission ring gear 402 that cooperates with all the transmission pinions 401 .
  • the inlet guide vanes 41 include a connecting shaft 403, and the length of the connecting shaft 403 of the driving guide vane 43 is The length of the connecting shaft 403 is greater than that of the passive guide vane 42 , and the reliable connection with the driving element is completed through the long connecting shaft 403 of the driving guide vane 43 .
  • the transmission pinion 401 is fixedly connected to the connecting shaft 403; one end of the connecting shaft 403 is provided with a mounting disk 404, and the mounting disk 404 is provided with a guide vane body 405, and the guide vane body 405 includes two oppositely arranged arc-shaped sides 406, The two arc-shaped sides 406 are bent in the same direction, one end of the two arc-shaped sides 406 intersects, the other end of the two arc-shaped sides 406 is provided with a transition arc, and the end of the guide vane body 405 connected to the installation disc 404 is provided with a transition
  • the surface 408 and the inner side wall of the housing 4 are provided with a limit groove 409 matching the transition surface 408 ;
  • the projection shape of the largest area of the guide vane body 405 on the plane where the axis of the connecting shaft 403 is located is an isosceles trapezoidal shape in which the upper base and the lower base are arc-shaped.
  • the shaded area in FIG. 5 is a schematic diagram of the cross section of the guide vane body 405 at the corresponding position.
  • the transmission pinion 401 adopts a bevel gear, and the apex angle of the bevel gear is set toward the axis of the housing 4; the outer layer of the housing 4 is provided with a step portion 410, and the inner side of the transmission large ring gear 402 is provided for connecting the transmission large ring gear 402 and the housing 4.
  • the mounting bearing 411 is fixed with a stepped ring 412 on the outside of the stepped portion 410 , and one side of the stepped ring 412 is fixedly connected to the inner ring of the mounting bearing 411 .
  • the fan assembly, the motor assembly, and the regulator of the inlet guide vane 41 are arranged in sequence, and the inlet guide vane 41 is separated from the main shaft 3, so that through holes with stable flow can be formed between the ends of the inlet guide vane 41 to ensure the wind force of the axial flow fan. At the same time, it has higher adjustment reliability.
  • the inlet guide vane 41 regulator rotates the angle of the inlet guide vane 41, and the airflow will circulate along the channel at a certain angle to the axial air intake direction, and the fluid passes through the inlet guide vane 41 regulator
  • the motor assembly drives the movable impeller 201 to do work on the fluid, the energy of the fluid increases and enters the stationary impeller 200 in the axial direction, and the stationary impeller 200 guides the fluid.
  • the pressure and temperature of the fluid decrease, and the flow rate increases. Thermal potential energy is converted into kinetic energy.
  • This application has a large flow rate and high transmission efficiency.
  • the motor assembly of the present application is provided with a cooling flow channel inside, and the cooling flow channel on the motor assembly can complete the air intake and take away the heat inside the motor assembly.
  • the heat dissipation of the main body is mainly completed through the flow channel on the motor barrel 1, and the heat dissipation effect is good.
  • valve plates are combined to form a spherical surface, and the air inlet is sealed through the spherical surface to prevent hot air from flowing into the cooling channel and causing the motor to heat up.
  • the guide rod also has a supporting function. When the valve is opened, the control valve can be hidden on the back side of the intake fairing, which has high safety.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Est divulgué un ventilateur à écoulement axial à suspension magnétique ayant un régulateur d'aube directrice, comprenant un ensemble ventilateur, un ensemble moteur et un régulateur d'aube directrice d'admission qui sont agencés séquentiellement sur une ligne droite. Un corps de moteur est disposé sur un côté extérieur de l'ensemble moteur. L'ensemble ventilateur comprend une roue statique et une roue mobile, la roue statique étant reliée à demeure à une extrémité du corps de moteur. La roue mobile et la roue statique sont disposées adjacentes l'une à l'autre. L'ensemble moteur comprend un arbre principal, un ensemble rotor et un ensemble stator. La roue mobile est reliée à demeure à l'arbre principal et l'arbre principal entraîne la roue mobile en rotation. L'extrémité du corps de moteur faisant face au régulateur d'aube directrice d'admission est pourvue d'un carénage d'admission d'air, le carénage d'admission d'air étant pourvu d'une entrée d'air. Une extrémité de l'arbre principal est pourvue à demeure d'une roue de dissipation de chaleur directement en regard de l'entrée d'air. Un canal d'écoulement de refroidissement correspondant à l'entrée d'air est disposé à l'intérieur du corps de moteur. L'entrée d'air est pourvue d'une soupape de commande. Le régulateur d'aube directrice d'admission comprend un carter qui est relié à demeure à une extrémité du corps de moteur et le carter est pourvu d'une pluralité d'aubes directrices d'admission dans la direction circonférentielle de celui-ci. Les aubes directrices d'admission comprennent chacune une aube directrice passive et une aube directrice active qui est reliée à un élément d'entraînement.
PCT/CN2021/140754 2021-08-19 2021-12-23 Ventilateur à écoulement axial à suspension magnétique ayant un régulateur d'aube directrice WO2023019843A1 (fr)

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CN116576156A (zh) * 2023-04-28 2023-08-11 高邮市大江泵业有限公司 一种基于离心力工作的混流泵
CN118157006A (zh) * 2024-05-10 2024-06-07 西安新兴自动控制电器有限公司 一种配电柜的散热结构
CN118201335A (zh) * 2024-05-15 2024-06-14 洛阳鼎红电气科技有限公司 一种电气设备的散热装置
CN118548235A (zh) * 2024-07-24 2024-08-27 佛山市南海九洲普惠风机有限公司 一种磁悬浮风机

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CN113775543B (zh) * 2021-08-19 2022-11-01 鑫磊压缩机股份有限公司 一种带导叶调节器的磁悬浮轴流风机
CN113819076B (zh) * 2021-08-19 2022-11-29 鑫磊压缩机股份有限公司 一种带调节器的轴流风机的风道结构
CN115288914B (zh) * 2022-10-08 2022-12-27 四川藏区高速公路有限责任公司 斜井内引水式发电设备

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CN116576156A (zh) * 2023-04-28 2023-08-11 高邮市大江泵业有限公司 一种基于离心力工作的混流泵
CN116576156B (zh) * 2023-04-28 2024-04-26 高邮市大江泵业有限公司 一种基于离心力工作的混流泵
CN118157006A (zh) * 2024-05-10 2024-06-07 西安新兴自动控制电器有限公司 一种配电柜的散热结构
CN118201335A (zh) * 2024-05-15 2024-06-14 洛阳鼎红电气科技有限公司 一种电气设备的散热装置
CN118548235A (zh) * 2024-07-24 2024-08-27 佛山市南海九洲普惠风机有限公司 一种磁悬浮风机

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