CN107503959A - A kind of shaftless blower fan of gear-rack drive formula - Google Patents

A kind of shaftless blower fan of gear-rack drive formula Download PDF

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Publication number
CN107503959A
CN107503959A CN201710914763.0A CN201710914763A CN107503959A CN 107503959 A CN107503959 A CN 107503959A CN 201710914763 A CN201710914763 A CN 201710914763A CN 107503959 A CN107503959 A CN 107503959A
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CN
China
Prior art keywords
gear
axle journal
base
import
rack
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710914763.0A
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Chinese (zh)
Inventor
张森
席德科
李华星
席晓东
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Northwestern Polytechnical University
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Northwestern Polytechnical University
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Filing date
Publication date
Application filed by Northwestern Polytechnical University filed Critical Northwestern Polytechnical University
Priority to CN201710914763.0A priority Critical patent/CN107503959A/en
Publication of CN107503959A publication Critical patent/CN107503959A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F04D19/002—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
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/056—Bearings
    • 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
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/056—Bearings
    • F04D29/057—Bearings hydrostatic; hydrodynamic
    • 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
    • F04D29/06—Lubrication
    • F04D29/063—Lubrication specially 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
    • F04D29/26—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
    • F04D29/326—Rotors specially for elastic fluids for axial flow pumps for axial flow fans comprising a rotating shroud
    • 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
    • F04D29/38—Blades
    • F04D29/388—Blades characterised by construction
    • 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
    • F04D29/522—Casings; Connections of working fluid for axial pumps 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663—Sound attenuation
    • 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans

Abstract

Present invention relates particularly to a kind of shaftless blower fan of gear-rack drive formula, including host machine part and motor transmission part；Host machine part includes stator component, rotor part and lubricating arrangement；Stator component includes drive end bearing bracket 171, import sliding bearing 161, air duct 4, outlet sliding bearing 162 and rear end cap 172；Rotor part includes import axle journal 151, wheel hub 7, arc rack 5, blade 14 and outlet axle journal 152；Lubricating arrangement includes lubricating cup 1, oil guide pipe 2 and choke valve 3；Motor transmission part includes base 28, electric machine support 27, motor 25, motor shaft 19, key 18, round nut 20, gear 21, base front shroud 221 and base back shroud 222.The present invention drives rotor part rotation by the way of rack-and-pinion is meshed at wheel rim, the flowing space that conventional fan wheel hub plate occupies is saved, increases the area that does work of blade 14, simultaneously, make the flowing in runner more uniformly reasonable, be beneficial to the raising of efficiency and noiseproof feature.

Description

A kind of shaftless blower fan of gear-rack drive formula
Technical field
The present invention relates to blower fan technical field, and in particular to a kind of shaftless blower fan of gear-rack drive formula.
Background technology
At present, known blower fan is rotated by central shaft drive hub, then the mode rotated by wheel hub with movable vane piece It is operated, the presence of wheel hub occupies larger free air space, therefore, with enough circulations during in order to ensure blower fan work Area, the external diameter of blade be commonly designed it is larger, meanwhile, the increase of outer blade diameter causes the increase of blade tip linear velocity, finally leads Cause the increase of noise；The junction of conventional fan wheel hub and blade is usually present boundary layer separation and Secondary Flow, mobility status compared with Difference, the conversion effect of energy is have impact on, reduce the efficiency of blower fan；In order to prevent blade blade tip and fan air drum from scratching, Generally leave 2mm-5mm gap, i.e. blade tip clearance between the two, during blower fan work, the gases at high pressure of blade pressure surface can be around Cross blade tip clearance and flow into blade suction surface, so not only create the leakage of flow, cause volumetric loss, and destroy flow field Stability, ultimately result in the reduction of overall efficiency.
The content of the invention
It is an object of the invention to provide a kind of shaftless blower fan of gear-rack drive formula.
The technical scheme is that：A kind of shaftless blower fan of gear-rack drive formula, including host machine part and motor transmission Part；
The host machine part includes stator component, rotor part and lubricating arrangement；
The stator component includes drive end bearing bracket, import sliding bearing, air duct, outlet sliding bearing, rear end cap, and the air duct is two End inner side is provided with the tubular structure of shoulder, is provided with the window that developed surface is rectangle below, and the surrounding of the window is set There is riser, one end of the riser is welded on air duct along rectangular window, and the other end is provided with rectangular flange, the Rectangular Method Multiple through holes are provided with orchid, are provided with seam and an oil guiding hole on the drive end bearing bracket and rear end cap, the seam it is outer Footpath is equal with the internal diameter of the shoulder at air duct both ends, the import sliding bearing and outlet sliding bearing be cyclic structure, with Interference fit is separately mounted in the seam of drive end bearing bracket and rear end cap；
The rotor part includes import axle journal, wheel hub, arc rack, blade and exports axle journal, on the periphery of the wheel hub The groove of annular is provided with, is provided with petiole at the blade tip of the blade, the petiole is interior curved tile, the multiple tile Piece together just for the internal diameter of wheel hub, the arc rack is convex structure, and the multiple arc rack pieces together just It is the external diameter of wheel hub groove well, the import axle journal and outlet axle journal are L-type；
The lubricating arrangement includes lubricating cup, oil guide pipe and choke valve, and one end of the oil guide pipe is connected with lubricating cup, and the other end is with before Oil guiding hole connection on end cap or rear end cap, the choke valve are arranged on oil guide pipe；
The motor transmission part include base, electric machine support, motor, motor shaft, key, round nut, gear, base front shroud and Base back shroud, the base are rectangular box-like structure, both ends open, and a rectangular window, institute are provided with its upper surface State and multiple screwed holes are also provided with the upper surface of base, its position and size match with the through hole on the rectangular flange of air duct lower end Close, be disposed with screw thread, keyway and the shaft shoulder along fan inlet to export direction on the motor shaft, the electric machine support is by one Block is horizontal positioned and two pieces of tilted-putted flat boards are formed, and is welded in base, the base of the motor is consolidated by support bracket bolt It is scheduled on electric machine support, a centre bore and multiple uniform lightening holes, the centre bore of the gear is provided with the gear On be provided with keyway, the base front shroud and base back shroud are separately fixed at the both sides of base by cover screw, the bottom of by Seat is closed.
The drive end bearing bracket and rear end cap are positioned by the shoulder on seam and air duct, installed in the both ends of air duct, and are led to Bolt of cover realization is crossed to be connected.
Oil guiding hole on the drive end bearing bracket and rear end cap is opened at 90 degree of azimuths, the import sliding bearing and outlet Oil guide groove is provided with sliding bearing, the oil guide groove is arranged at 90 degree of azimuths, and the oil guiding hole mutually interconnects with oil guide groove It is logical.
The petiole of the multiple blade is along the circumferential direction uniformly fixed on the inner headed face of wheel hub by petiole bolt, institute State and multiple counterbores are also provided with arc rack, the multiple arc rack is along the circumferential direction uniformly fixed on by rack screw In groove on wheel hub.
Center line in the axial direction multiple uniform heavy is also provided with the sagittal plane of the import axle journal and outlet axle journal Hole, the import axle journal and outlet axle journal are separately fixed at the both ends of wheel hub by axle journal screw.
The import sliding bearing and outlet sliding bearing constitute completely with import axle journal and outlet axle journal respectively Radial thrust sliding bearing pair, realize the axially and radially spacing of rotor part.
The import sliding bearing and outlet sliding bearing have been respectively formed axial direction between import axle journal and outlet axle journal respectively Gap and radial clearance, the lubricating oil enter oil guide pipe from lubricating cup, oil guide groove are entered after choke valve and oil guiding hole, finally Axial gap and radial clearance are flowed into, realizes lubrication.
The motor shaft passes through the centre bore of gear, realized by key it is circumferentially positioned, and by round nut and motor shaft The shaft shoulder realize axially position.
The upper surface of the base is fixedly connected by bolt of lower base with the rectangular flange of air duct lower end, and the gear is successively Through the rectangular window and the rectangular window of air inlet channel below air duct on base upper surface, it is meshed with arc rack, both form gear Pair, realize transmission.
The beneficial effects of the invention are as follows：
1. the present invention drives rotor part rotation by the way of rack-and-pinion is meshed at wheel rim, conventional fan is saved The flowing space that wheel hub plate occupies, the area that does work of blade is increased, in the case of same impeller diameter, relative to wheel hub The mode of dribbling movable vane piece acting, the output of blade of the present invention is more, meanwhile, reduce the obstruction in the flowing space, such as Motor, wheel hub etc., make the flowing in runner more uniform, be beneficial to the raising of efficiency and noiseproof feature.
2. host machine part and motor transmission part have been carried out modularized design and installation by the present invention, a host machine part can To configure different motor transmission parts, equally, a motor transmission part can configure different host machine parts, not only improve The versatility of device, and easily make product seriation.
3. the present invention drives rotor part rotation by the way of rack-and-pinion is meshed at wheel rim, traditional wind is improved Machine blade and the flow field state of wheel hub junction, so as to improve fan efficiency.
4. blade tip clearance is not present in the present invention, the gases at high pressure for avoiding blade pressure surface flow into blade around blade tip clearance Suction surface, and then reduce volumetric loss, and make the flow field near blade tip more reasonable, reduce energy loss, improve Overall efficiency, and reduce aerodynamic noise.
5. sliding bearing of the present invention and axle journal constitute radial thrust sliding bearing pair, for supporting rotor part, slide Bearing has the performance characteristics of low noise in itself, and the active force of rotor part is smaller, therefore is beneficial to the machinery for reducing blower fan Noise.
Brief description of the drawings
Fig. 1 is the structure sectional view of the embodiment of the present invention；
Fig. 2 is Fig. 1 A-A left view；
Fig. 3 is import of embodiment of the present invention sliding bearing or the structure chart for exporting sliding bearing；
Fig. 4 is the structure chart of blade of the embodiment of the present invention；
Fig. 5 is the structure chart of arc rack of the embodiment of the present invention；
Fig. 6 is the structure chart of base of the embodiment of the present invention；
Fig. 7 is the structure chart of motor of the embodiment of the present invention；
Fig. 8 is the structure chart of gear of the embodiment of the present invention.
Brief description of the drawings：1- lubricating cups, 2- oil guide pipes, 3- choke valves, 4- air ducts, 5- arc racks, 6- rack screws, 7- wheels Hub, 8- axle journal screws, 9- bolts of cover, 10- oil guide grooves, 11- radial clearances, 12- axial gaps, 13- petiole bolts, 14- leaves Piece, 151- import axle journals, 152- outlets axle journal, 161- import sliding bearings, 162- outlets sliding bearing, 171- drive end bearing brackets, 172- rear end caps, 18- keys, 19- motor shafts, 20- round nuts, 21- gears, 221- base front shrouds, 222- base back shrouds, 23- cover screws, 24- bolts of lower base, 25- motors, 26- support bracket bolts, 27- electric machine supports, 28- bases, 29- oil guiding holes.
Embodiment
The shaftless blower fan of gear-rack drive formula as shown in Figures 1 to 8, including host machine part and motor transmission part；
Host machine part includes stator component, rotor part and lubricating arrangement；
Stator component includes drive end bearing bracket 171, import sliding bearing 161, air duct 4, outlet sliding bearing 162, rear end cap 172, wind Cylinder 4 is the tubular structure that shoulder is provided with the inside of both ends, is provided with the window that developed surface is rectangle below, and the surrounding of window is set Riser is equipped with, one end of riser is welded on air duct 4 along rectangular window, and the other end is provided with rectangular flange, on rectangular flange Be provided with multiple through holes, be provided with seam and an oil guiding hole 29 on drive end bearing bracket 171 and rear end cap 172, the external diameter of seam with The internal diameter of the shoulder at the both ends of air duct 4 is equal, and import sliding bearing 161 and outlet sliding bearing 162 are cyclic structure, with mistake Cooperation of being full of is separately mounted in the seam of drive end bearing bracket 171 and rear end cap 172；
Rotor part includes import axle journal 151, wheel hub 7, arc rack 5, blade 14 and outlet axle journal 152, the periphery of wheel hub 7 On be provided with the groove of annular, be provided with petiole at the blade tip of blade 14, petiole is interior curved tile, and multiple tiles piece together It is just the internal diameter of wheel hub 7, arc rack 5 is convex structure, and it is just the groove of wheel hub 7 that multiple arc racks 5, which piece together, External diameter, import axle journal 151 and outlet axle journal 152 be L-type；
Lubricating arrangement includes lubricating cup 1, oil guide pipe 2 and choke valve 3, and one end of oil guide pipe 2 is connected with lubricating cup 1, the other end and front end Oil guiding hole 29 on lid 171 or rear end cap 172 is connected, and choke valve 3 is arranged on oil guide pipe 2, for controlling the big of lubricants capacity It is small；
Motor transmission part includes base 28, electric machine support 27, motor 25, motor shaft 19, key 18, round nut 20, gear 21, bottom Seat front shroud 221 and base back shroud 222, base 28 are rectangular box-like structure, both ends open, and one is provided with its upper surface Individual rectangular window, multiple screwed holes are also provided with the upper surface of base 28, its position and size and the rectangular flange of the lower end of air duct 4 On through hole be engaged, be disposed with screw thread, keyway and the shaft shoulder, motor branch along fan inlet to export direction on motor shaft 19 Frame 27 is horizontal positioned and two pieces of tilted-putted flat boards are formed by one piece, is welded in base 28, the base of motor 25 passes through branch Frame bolt 26 is fixed on electric machine support 27, and a centre bore and multiple uniform lightening holes, gear 21 are provided with gear 21 Centre bore on be provided with keyway, base front shroud 221 and base back shroud 222 are separately fixed at base by cover screw 23 28 both sides, base 28 is closed.
Drive end bearing bracket 171 and rear end cap 172 are positioned by the shoulder on seam and air duct, installed in the both ends of air duct 4, and Realized and be connected by bolt of cover 9.
Oil guiding hole 29 on drive end bearing bracket 171 and rear end cap 172 is opened at 90 degree of azimuths, the He of import sliding bearing 161 Oil guide groove 10 is provided with outlet sliding bearing 162, oil guide groove 10 is arranged at 90 degree of azimuths, oil guiding hole 29 and oil guide groove 10 It is interconnected.
The petiole of multiple blades 14 is along the circumferential direction uniformly fixed on the inner headed face of wheel hub 7 by petiole bolt 13, Multiple counterbores are also provided with arc rack 5, multiple arc racks 5 are along the circumferential direction uniformly fixed on wheel by rack screw 6 In groove on hub 7.
Center line in the axial direction multiple uniform is also provided with the sagittal plane of import axle journal 151 and outlet axle journal 152 Counterbore, import axle journal 151 and outlet axle journal 152 are separately fixed at the both ends of wheel hub 7 by axle journal screw 8.
Import sliding bearing 161 and outlet sliding bearing 162 constitute with import axle journal 151 and outlet axle journal 152 respectively Complete radial thrust sliding bearing pair, realizes the axially and radially spacing of rotor part, sliding bearing has the spy of low noise Point, and the active force of rotor part is smaller, therefore be beneficial to reduce mechanical noise.
Import sliding bearing 161 and outlet sliding bearing 162 form with import axle journal 151 and outlet axle journal 152 respectively Axial gap 12 and radial clearance 11, lubricating oil enter oil guide pipe 2 from lubricating cup 1, enter after choke valve 3 and oil guiding hole 29 and lead Oil groove 10, axial gap 12 and radial clearance 11 are finally flowed into, realize lubrication.
Motor shaft 19 passes through the centre bore of gear 21, is realized by key 18 circumferentially positioned, and passes through round nut 20 and motor The shaft shoulder on axle 19 realizes axially position.
The upper surface of base 28 is fixedly connected by bolt of lower base 24 with the lower end rectangular flange of air duct 4, and gear 21 is worn successively The rectangular window and the rectangular window of the lower section of air duct 4 crossed on the upper surface of base 28, are meshed, both form tooth with arc rack 5 Wheel set, realize transmission.
Operation principle of the present invention is as follows：When blower fan does not work, choke valve 3 is closed, prevents oil leak；Blower fan work When, choke valve 3 is opened, 1 lubricating oil passes through oil guide pipe 2, choke valve 3, oil guiding hole 29 and oil guide groove 10 successively in lubricating cup, finally Into the axial gap 12 and radial clearance 11 of sliding bearing pair, complete lubricating system, the drive gear 21 of motor shaft 19 are formed Rotation, gear 21 is meshed with the arc rack 5 on wheel hub 7, and so as to drive wheel hub 7 to rotate, blade 14 follows wheel hub 7 with identical Peripheral speed rotation, the blade 14 of rotation does work to gas, makes kinetic energy and the pressure energy increase of gas, is formed required Air quantity and blast.

Claims (9)

  1. A kind of 1. shaftless blower fan of gear-rack drive formula, it is characterised in that：Including host machine part and motor transmission part；
    The host machine part includes stator component, rotor part and lubricating arrangement；
    The stator component include drive end bearing bracket (171), import sliding bearing (161), air duct (4), outlet sliding bearing (162), Rear end cap (172), the air duct (4) are the tubular structure that shoulder is provided with the inside of both ends, and it is square to be provided with developed surface below The window of shape, the surrounding of the window are provided with riser, and one end of the riser is welded on air duct (4) along rectangular window, The other end is provided with rectangular flange, and multiple through holes, the drive end bearing bracket (171) and rear end cap are provided with the rectangular flange (172) seam and an oil guiding hole (29), the internal diameter phase of the external diameter and air duct (4) both ends shoulder of the seam are provided with It is cyclic structure Deng, the import sliding bearing (161) and outlet sliding bearing (162), is installed respectively with interference fit In the seam of drive end bearing bracket (171) and rear end cap (172)；
    The rotor part includes import axle journal (151), wheel hub (7), arc rack (5), blade (14) and outlet axle journal (152) groove of annular, is provided with the periphery of the wheel hub (7), is provided with petiole at the blade tip of the blade (14), institute It is interior curved tile to state petiole, and the multiple tile pieces together is just for the internal diameter of wheel hub (7), the arc rack (5) Convex structure, the multiple arc rack (5) are pieced together just as the external diameter of wheel hub (7) groove, the import axle journal (151) and outlet axle journal (152) is L-type；
    The lubricating arrangement includes lubricating cup (1), oil guide pipe (2) and choke valve (3), one end and the lubricating cup (1) of the oil guide pipe (2) Connection, the other end are connected with the oil guiding hole (29) on drive end bearing bracket (171) or rear end cap (172), and the choke valve (3) is arranged on and led On oil pipe (2)；
    The motor transmission part includes base (28), electric machine support (27), motor (25), motor shaft (19), key (18), circle spiral shell Female (20), gear (21), base front shroud (221) and base back shroud (222), the base (28) are a rectangular case Shape structure, both ends open, a rectangular window is provided with its upper surface, multiple spiral shells are also provided with the upper surface of the base (28) Pit, its position and size are engaged with the through hole on the rectangular flange of air duct (4) lower end, are entered on the motor shaft (19) along blower fan Mouthful it is disposed with screw thread, keyway and the shaft shoulder to export direction, the electric machine support (27) is horizontal positioned and two pieces are inclined by one piece The flat board tiltedly placed is formed, and is welded in base (28), the base of the motor (25) is fixed on electricity by support bracket bolt (26) On machine support (27), a centre bore and multiple uniform lightening holes are provided with the gear (21), the gear (21) It is solid respectively by cover screw (23) that keyway, the base front shroud (221) and base back shroud (222) are provided with centre bore It is scheduled on the both sides of base (28).
  2. 2. the shaftless blower fan of gear-rack drive formula according to claim 1, it is characterised in that：The drive end bearing bracket (171) and Rear end cap (172) is positioned by the shoulder on seam and air duct (4), installed in the both ends of air duct (4), and passes through bolt of cover (9) realize and be connected.
  3. 3. the shaftless blower fan of gear-rack drive formula according to claim 1 or 2, it is characterised in that：The drive end bearing bracket (171) It is opened at 90 degree of azimuths with the oil guiding hole (29) on rear end cap (172), the import sliding bearing (161) and outlet are slided Oil guide groove (10) is provided with bearing (162), the oil guide groove (10) is arranged at 90 degree of azimuths, the oil guiding hole (29) with Oil guide groove (10) is interconnected.
  4. 4. the shaftless blower fan of gear-rack drive formula according to claim 1, it is characterised in that：The multiple blade (14) Petiole is along the circumferential direction uniformly fixed on the inner headed face of wheel hub (7) by petiole bolt (13), on the arc rack (5) Multiple counterbores are also provided with, the multiple arc rack (5) is along the circumferential direction uniformly fixed on wheel hub by rack screw (6) (7) in the groove on.
  5. 5. the shaftless blower fan of gear-rack drive formula according to Claims 1-4, it is characterised in that：The import axle journal (151) the multiple uniform counterbores of center line in the axial direction, the import also and on the sagittal plane of outlet axle journal (152) are provided with Axle journal (151) and outlet axle journal (152) are separately fixed at the both ends of wheel hub (7) by axle journal screw (8).
  6. 6. the shaftless blower fan of gear-rack drive formula according to claim 1 to 5, it is characterised in that：The import sliding axle Hold (161) and outlet sliding bearing (162) constitutes complete radial direction with import axle journal (151) and outlet axle journal (152) respectively Thrust slide bearing pair, realize the axially and radially spacing of rotor part.
  7. 7. the shaftless blower fan of gear-rack drive formula according to claim 1 to 6, it is characterised in that：The import sliding axle Hold (161) and outlet sliding bearing (162) forms axial gap with import axle journal (151) and outlet axle journal (152) respectively (12) enter oil guide pipe (2) with radial clearance (11), the lubricating oil from lubricating cup (1), oil guide groove is entered after choke valve (3) (10) axial gap (12) and radial clearance (11), are finally flowed into, realizes lubrication.
  8. 8. the shaftless blower fan of gear-rack drive formula according to claim 1 to 7, it is characterised in that：The motor shaft (19) Through the centre bore of gear (21), realized by key (18) it is circumferentially positioned, and by round nut (20) and motor shaft (19) The shaft shoulder realizes axially position.
  9. 9. the shaftless blower fan of gear-rack drive formula according to claim 1 to 8, it is characterised in that：The base (28) Upper surface is fixedly connected by bolt of lower base (24) with air duct (4) lower end rectangular flange, and the gear (21) sequentially passes through base (28) rectangular window on upper surface and the rectangular window below air duct (4), are meshed, both form tooth with arc rack (5) Wheel set, realize transmission.
CN201710914763.0A 2017-09-30 2017-09-30 A kind of shaftless blower fan of gear-rack drive formula Pending CN107503959A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108194378A (en) * 2018-03-26 2018-06-22 石家庄开发区石泵泵业有限公司 Multistage rotation tubular tye axial flow pump
CN108361124A (en) * 2018-04-26 2018-08-03 长沙紫宸科技开发有限公司 The aircraft shaftless ducted fan of cone tooth driving torque self-balancing or blade
CN110425149A (en) * 2019-07-29 2019-11-08 南京航空航天大学 A kind of two-stage sandwich traveling wave piezoelectricity centrifugal pump and its driving method
EP3588750A1 (en) * 2018-06-26 2020-01-01 Pratt & Whitney Canada Corp. Electric fan
CN113545692A (en) * 2021-07-30 2021-10-26 四川急客方便科技有限公司 Excrement and urine piece-rate system with safety shelters from

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JP2006097494A (en) * 2004-09-28 2006-04-13 Bay City Service Co Ltd Electric pump
CN101832273A (en) * 2010-05-11 2010-09-15 辽宁广联机械科技有限公司 Closed shaftless screw pump
CN201953675U (en) * 2010-12-29 2011-08-31 西安陕鼓动力股份有限公司 Shaftless double cylinder two-speed axial-flow supercharger
CN105109650A (en) * 2015-09-15 2015-12-02 武汉理工大学 Oppositely-rotating shaft-less rim-driven propeller
CN207454330U (en) * 2017-09-30 2018-06-05 西北工业大学 A kind of shaftless wind turbine of gear-rack drive formula

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006097494A (en) * 2004-09-28 2006-04-13 Bay City Service Co Ltd Electric pump
CN101832273A (en) * 2010-05-11 2010-09-15 辽宁广联机械科技有限公司 Closed shaftless screw pump
CN201953675U (en) * 2010-12-29 2011-08-31 西安陕鼓动力股份有限公司 Shaftless double cylinder two-speed axial-flow supercharger
CN105109650A (en) * 2015-09-15 2015-12-02 武汉理工大学 Oppositely-rotating shaft-less rim-driven propeller
CN207454330U (en) * 2017-09-30 2018-06-05 西北工业大学 A kind of shaftless wind turbine of gear-rack drive formula

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108194378A (en) * 2018-03-26 2018-06-22 石家庄开发区石泵泵业有限公司 Multistage rotation tubular tye axial flow pump
CN108361124A (en) * 2018-04-26 2018-08-03 长沙紫宸科技开发有限公司 The aircraft shaftless ducted fan of cone tooth driving torque self-balancing or blade
EP3588750A1 (en) * 2018-06-26 2020-01-01 Pratt & Whitney Canada Corp. Electric fan
US11509201B2 (en) 2018-06-26 2022-11-22 Pratt & Whitney Canada Corp. Electric fan
CN110425149A (en) * 2019-07-29 2019-11-08 南京航空航天大学 A kind of two-stage sandwich traveling wave piezoelectricity centrifugal pump and its driving method
CN113545692A (en) * 2021-07-30 2021-10-26 四川急客方便科技有限公司 Excrement and urine piece-rate system with safety shelters from

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Application publication date: 20171222