CN107147232B - Fog machine permanent-magnetic brush-less DC inner rotor motor - Google Patents

Fog machine permanent-magnetic brush-less DC inner rotor motor Download PDF

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Publication number
CN107147232B
CN107147232B CN201710394040.2A CN201710394040A CN107147232B CN 107147232 B CN107147232 B CN 107147232B CN 201710394040 A CN201710394040 A CN 201710394040A CN 107147232 B CN107147232 B CN 107147232B
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CN
China
Prior art keywords
liner
bearing
end cover
fog machine
less
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Application number
CN201710394040.2A
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Chinese (zh)
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CN107147232A (en
Inventor
程应锌
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Shuan Jie Science And Technology Ltd Of Zhuhai City
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Shuan Jie Science And Technology Ltd Of Zhuhai City
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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12Stationary parts of the magnetic circuit
    • H02K1/16Stator cores with slots for windings
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/27Rotor cores with permanent magnets
    • H02K1/2706Inner rotors
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/167Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
    • H02K5/1672Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings radially supporting the rotary shaft at both ends of the rotor

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

The present invention relates to fog machine permanent-magnetic brush-less DC inner rotor motor, including shell, stator assembly and rotor assembly;Rotor assembly includes rotor liner, and rotor liner includes centre bore and outer ring, and shaft is fixedly connected in centre bore, liner iron hoop is fixedly connected on outer ring;Rotor liner side is fixedly connected with liner baffle, is equipped with equally distributed raised line around liner baffle, raised line is located on liner iron hoop;28 magnetic shoes are fixed on interior protector ring;Stator module includes silicon steel sheet, and silicon steel sheet is equipped with 24 line embedding grooves;Shell two sides are additionally provided with first end cover and second end cover;First bearing and second bearing are respectively equipped in the stepped hole of first end cover and second end cover;Shaft is contacted with second bearing, and passes through first bearing;One end that shaft passes through first bearing is equipped with paddle holder assembly.Inner rotor motor of the invention can prevent liquid medicine corrosion electrical motor coil, can be used for directly driving the propeller of fog machine.

Description

Fog machine permanent-magnetic brush-less DC inner rotor motor
Technical field
The present invention relates to motor fields, and in particular to one kind is suitable for fog machine and can prevent liquid medicine corrosion electrical motor coil Permanent-magnetic brush-less DC inner rotor motor.
Background technique
With agricultural mechanization development, fog machine especially plant protection drone is had received widespread attention.Fog machine is to use In the aircraft of agriculture and forestry plant protection operation, fog machine flies by preset flight path on operation ground and sprays medicament, right Landform requirement is low, and sprinkling accuracy is high, and extensive operation may be implemented, greatly improve efficiency.
Most of motor in existing fog machine is external rotor electric machine.The rotor assembly of external rotor electric machine is located at outside, Stator module is located inside, and due to the limitation of structure, motor cannot form closed entirety, always has the gap in structure.It uses When fog machine is sprayed, liquid medicine is easily accessible inside motor, causes to corrode to the coil inside motor.
Compared with external rotor electric machine, inner rotor motor good airproof performance be may be implemented totally-enclosed.Such as made using inner rotor motor For the motor of fog machine, liquid medicine be cannot easily enter inside motor, can prevent liquid medicine corrosion electrical motor coil.With outer rotor Motor is compared, and the power-weight ratio of inner rotor motor is bigger.Common inner rotor motor number of poles is less, and the revolving speed of motor is higher, Torsion is lower, is not suitable for directly providing power for fog machine.
Summary of the invention
In order to solve the problem above-mentioned, it is suitable for protecting plant machine the object of the present invention is to provide one kind and enough prevents liquid medicine from corroding The permanent-magnetic brush-less DC inner rotor motor of electrical-coil.
To achieve the above object, the present invention provides a kind of fog machine permanent-magnetic brush-less DC inner rotor motor, including shell, Stator assembly and rotor assembly;Rotor assembly includes rotor liner, and rotor liner includes centre bore and outer ring, is fixed in centre bore It is connected with shaft, liner iron hoop is fixedly connected on outer ring;Rotor liner side is fixedly connected with liner baffle, liner baffle week It encloses and is equipped with equally distributed raised line, raised line is located on liner iron hoop;28 magnetic shoes, every magnetic shoe position are fixed on interior protector ring Between adjacent raised line;Stator module includes the silicon steel sheet of annular, and silicon steel sheet is equipped with 24 inside line embedding grooves of opening;Magnetic shoe In the ring of silicon steel sheet;Shell is fixed on outside the ring of silicon steel sheet;Shell two sides are additionally provided with first end cover and second end cover, and first End cap and second end cover are fixed on the shell by the first threaded fastener;Step is equipped among first end cover and second end cover First bearing and second bearing are respectively equipped in the stepped hole of hole, first end cover and second end cover;Shaft is contacted with second bearing, And pass through first bearing;One end that shaft passes through first bearing is equipped with paddle holder assembly.
The present invention uses direct current permanent magnetic brushless motor, reduces the vibration of fuselage, keeps fog machine spray more accurate.In electricity Machine two sides setting first end cover and second end cover are closed, and liquid medicine enters when fog machine can be effectively prevent to carry out spray drug operation Motor and then corrosion electrical motor coil.The present invention also refers to the structure of high number of poles outer rotor, and designing structurally reasonable has high pole Several inner rotor motors, specifically, using the silicon steel sheet of 24 slots and 28 magnetic shoes, as the outer rotor designs of fog machine, The theoretical torsion of inner rotor motor is as outer rotor, to reduce motor speed, the torsion of inner rotor motor is improved, so that interior Rotor electronics can directly drive the propeller of fog machine.
Further technical solution is that magnetic shoe is equipped with carbon fiber layer, and carbon fiber layer is by carbon fiber wire and resin glue tight It is formed outside magnetic shoe.
In order to guarantee the firmness of rotor entirety, closely wrapped in the outside of magnetic shoe of the present invention carbon fiber wire and resin glue It wraps up in, forms one layer of firm carbon fiber layer.When magnetic shoe works under high temperature and high speed state, carbon fiber layer can ensure that magnetic shoe will not It scatters.
Further technical solution is that first bearing is equipped with bearing cap towards the side of paddle seat, and bearing cap passes through the second spiral shell Line fastener is fixed in first end cover.
In order to further increase the closure of inner rotor motor, first bearing is equipped with bearing cap towards the side of paddle seat.Axis It holds lid first bearing is enclosed in the space being made of shell, first end cover, second end cover, effectively avoids liquid medicine from first axle It holds place and enters motor.
Further technical solution is that bearing cap is equipped with lubricating grease towards the side of first bearing.
The present invention is coated in the side of bearing cap towards first bearing or filled with lubricating grease.Lubricating grease both Castor Oil axis Hold, but can bearing cap and first end cover, shaft contacts position at close motor, further prevent liquid medicine to enter in motor Portion.
Further technical solution is that first bearing is angular contact bearing.
Due to the effect of propeller, motor will bear a bigger axial tension always.In order to increase the axis of motor To pull resistance, use angular contact bearing for first bearing.Angular contact bearing has very strong axial pull resistance, can significantly mention High first bearing uses the time.
Further technical solution is that shell is equipped with radiating groove.
For the ease of motor radiating, radiating groove has been done on the shell of motor, has been conducive to scatter away the heat in coil, really Protect the steady operation of motor.
Further technical solution is that paddle holder assembly includes the paddle seat liner for being located at shaft end, and lining is cased in paddle seat Paddle seat, paddle seat are fixedly connected by third threaded fastener with shaft.Fixed propeller can be installed on paddle seat.
Further technical solution is that shaft is hollow shaft.
It is hollow shaft by pivot design, the weight of complete machine can be mitigated.
Further technical solution is that rotor liner is made of 7075 aluminium alloys, and rotor liner includes inner ring, and centre bore is set It sets among inner ring;Being connected with outer ring by spoke for inner ring, forms lightening hole between spoke.Using 7075 high aluminium alloys of intensity Rotor liner is made, and lining is conducive under the premise of not reducing rotor liner intensity into one equipped with lightening hole in rotor Step mitigates main screw lift.
Further technical solution is, first end cover and second end cover include cover board and radial setting on the cover board Ribs.
First end cover and second end cover can use relatively thin cover board, and radial reinforcement is arranged on the cover board Rib.Under the premise of guaranteeing first end cover and second end cover intensity, main screw lift can be further decreased.
Detailed description of the invention
Fig. 1 is the main view of fog machine permanent-magnetic brush-less DC inner rotor motor embodiment of the present invention.
Fig. 2 is the right view of fog machine permanent-magnetic brush-less DC inner rotor motor embodiment of the present invention.
Fig. 3 is the left view of fog machine permanent-magnetic brush-less DC inner rotor motor embodiment of the present invention.
Fig. 4 is exploded view of the fog machine permanent-magnetic brush-less DC inner rotor motor embodiment of the present invention under a visual angle.
Fig. 5 is decomposition of the fog machine permanent-magnetic brush-less DC inner rotor motor embodiment of the present invention under another visual angle Figure.
Fig. 6 is the cross-sectional view of Section A-A in Fig. 1.
Fig. 7 is the cross-sectional view of section B-B in Fig. 2.
Fig. 8 be in fog machine permanent-magnetic brush-less DC inner rotor motor embodiment of the present invention rotor assembly under a visual angle Exploded view.
Fig. 9 be in fog machine permanent-magnetic brush-less DC inner rotor motor embodiment of the present invention rotor assembly at another visual angle Under exploded view.
The invention will be further described with reference to the accompanying drawings and embodiments.
Specific embodiment
Referring to Fig. 1, Fig. 4 to Fig. 5, the fog machine permanent-magnetic brush-less DC inner rotor motor of the present embodiment include shell 10, Stator module 20, rotor assembly 30 and paddle holder assembly 40.
Referring to Fig. 8 to 9, rotor assembly 30 includes rotor liner 31, shaft 32, liner iron hoop 33, liner baffle 34 and magnetic Watts 35.
Rotor liner 31 includes inner ring 311 and outer ring 312, is equipped with centre bore 313 among inner ring 311.Inner ring 311 and outer ring 312 are connected by spoke 314, and lightening hole 315 is formed among adjacent spoke 314, are conducive to mitigate main screw lift.Rotor liner 31 be to advantageously ensure that the intensity of rotor liner 31 made of 7075 aluminium alloys.
Shaft 32 is fixed in centre bore 313.Shaft 32 is hollow shaft, can reduce main screw lift.
Liner iron hoop 33 is fixed on outside the ring of rotor liner 31.Liner baffle 34 is fixed on the side of rotor liner 31, Gu Determine mode and can be to be fixed by screw.Equally distributed raised line 341 is equipped with around liner baffle 34.Liner baffle 34 is solid When being scheduled on rotor 31 side of liner, raised line 341 is located on liner iron hoop 33.
Liner iron hoop 33 is equipped with 28 magnetic shoes 35, and every magnetic shoe 35 is respectively positioned between adjacent raised line 341.Raised line 341 It can play the role of interval, it is fixed to be conducive to magnetic shoe 35.
In order to further increase the firmness of rotor entirety, the outside carbon fiber wire and resin glue of magnetic shoe 35 are closely wrapped It wraps up in, forms one layer of firm carbon fiber layer.Carbon fiber layer may insure that magnetic shoe will not scatter in high temperature and high speed.
Stator module 20 includes the silicon steel sheet 21 of annular, and silicon steel sheet 21 is equipped with 24 inside line embedding grooves 211 of opening.It is described Winding coil is placed in line embedding groove 211.Referring to Fig. 6 to 7, the magnetic shoe 35 of rotor assembly 30 is located in the ring of silicon steel sheet 21, outside Shell 10 is fixed on outside the ring of silicon steel sheet 21.
For the ease of motor radiating, it is ensured that the steady operation of motor, shell 10 are equipped with radiating groove 11.
10 two sides of shell are additionally provided with first end cover 12 and second end cover 13, and first end cover 12 and second end cover 13 pass through first Threaded fastener 14 is fixed on shell 10, and the first threaded fastener 14 can be screw.
Referring to fig. 2 to Fig. 3, first end cover 12 and second end cover 13 include cover board and radial setting on the cover board Ribs.Cover board is relatively thin, advantageously reduces main screw lift, and ribs is used for proof strength.
Referring to Fig. 7, stepped hole, first end cover 12 and second end cover 13 are equipped among first end cover 12 and second end cover 13 Stepped hole in be respectively fixed with first bearing 15 and second bearing 16.Shaft 32 is contacted with second bearing 16, and passes through first Bearing 15.
It is constituted between shell 10, first end cover 12, second end cover 13, first bearing 15, second bearing 16 and shaft 32 One closed space plays a protective role to stator module 20, the rotor assembly 30 in it, prevents fog machine from carrying out spray work Liquid medicine enters motor when industry.
One end that shaft 32 passes through first bearing 15 is equipped with paddle holder assembly 40.Referring to fig. 4 to Fig. 5, paddle holder assembly 40 includes The paddle seat liner 41 in 32 end of shaft is covered, paddle seat 42 is cased on paddle seat liner 41, paddle seat 42 passes through third threaded fastener 43 It is fixedly connected with shaft 32.Third threaded fastener 43 can be screw.It is also set between third threaded fastener 43 and paddle seat 42 There is gasket.
Due to the effect of propeller, motor will bear a bigger axial tension always.In order to increase the axis of motor To pull resistance, first bearing 15 uses angular contact bearing.
In order to further increase the closure of inner rotor motor, first bearing 15 is equipped with axis towards the side of paddle holder assembly 40 Lid 17 is held, bearing cap 17 is fixed in first end cover 12 by the second threaded fastener 18.Bearing cap 17 is towards first bearing 15 Side be equipped with lubricating grease.Lubricating grease can be filled between bearing cap 17 and the stepped hole of first end cover 12, both for lubricating First bearing 15, and sealing process can be played at the position that bearing cap 17 is contacted with first end cover 12, shaft 32.
The inner rotor motor of the present embodiment further includes lead-out wire, and lead-out wire is closed with rubber ring, and inside is equipped with sealant.
When making fog machine permanent-magnetic brush-less DC inner rotor motor, first held successfully by the drawing of designed silicon steel sheet 21 Particular manufacturing craft, and make the silicon steel sheet 21 of needs.Each part and purchased parts are processed by design drawing.It is set again by drawing Meter assembles rotor assembly 30, and carries out dynamic balancing measurement.Wound around coil as required, and insulation processing.It stays and draws in motor Outlet.Final assembly, and tested.
Therefore fog machine of the invention is realized totally-enclosed with permanent-magnetic brush-less DC inner rotor motor, liquid cannot It enters inside motor, motor Inside coil is effectively prevent to be corroded by liquid medicine.Using the silicon steel sheet of 24 slots and 28 magnetic shoes, effectively Motor speed is reduced, the torsion of inner rotor motor is improved, internal rotor electronics is enabled to directly drive the propeller of fog machine. And by a series of improvement in structures, so that motor weight saving, weight can be in 680g or so.
Finally it is emphasized that the above description is only a preferred embodiment of the present invention, it is not intended to restrict the invention, it is right For those skilled in the art, the present invention can have various change and change, all within the spirits and principles of the present invention, Any modification, equivalent substitution, improvement and etc. done, should all be included in the protection scope of the present invention.

Claims (10)

1. fog machine permanent-magnetic brush-less DC inner rotor motor, including shell, stator assembly and rotor assembly, it is characterised in that:
The rotor assembly includes rotor liner, and the rotor liner includes centre bore and outer ring, fixed company in the centre bore It is connected to shaft, liner iron hoop is fixedly connected on the outer ring;Rotor liner side is fixedly connected with liner baffle, described Equally distributed raised line is equipped with around liner baffle, the raised line is located on liner iron hoop;28 are fixed on interior protector ring Magnetic shoe, every magnetic shoe is between adjacent raised line;
The stator module includes the silicon steel sheet of annular, and the silicon steel sheet is equipped with 24 inside line embedding grooves of opening;The magnetic shoe In the ring of the silicon steel sheet;
The shell is fixed on outside the ring of the silicon steel sheet;The shell two sides are additionally provided with first end cover and second end cover, described First end cover and the second end cover are fixed on the shell by the first threaded fastener;The first end cover and the second end Lid is intermediate to be equipped with stepped hole, is respectively equipped with first bearing and second in the stepped hole of the first end cover and the second end cover Bearing;The shaft is contacted with the second bearing, and passes through the first bearing;
One end that the shaft passes through the first bearing is equipped with paddle holder assembly.
2. fog machine according to claim 1 permanent-magnetic brush-less DC inner rotor motor, it is characterised in that: on the magnetic shoe Equipped with carbon fiber layer, the carbon fiber layer is formed outside magnetic shoe by carbon fiber wire and resin glue tight.
3. fog machine according to claim 1 permanent-magnetic brush-less DC inner rotor motor, it is characterised in that: the first axle It holds towards the side of paddle seat and is equipped with bearing cap, the bearing cap is fixed in the first end cover by the second threaded fastener.
4. fog machine according to claim 3 permanent-magnetic brush-less DC inner rotor motor, it is characterised in that: the bearing cap Lubricating grease is equipped with towards the side of first bearing.
5. fog machine according to claim 1 permanent-magnetic brush-less DC inner rotor motor, it is characterised in that: the first axle It holds as angular contact bearing.
6. fog machine according to claim 1 permanent-magnetic brush-less DC inner rotor motor, it is characterised in that: on the shell Equipped with radiating groove.
7. fog machine according to claim 1 permanent-magnetic brush-less DC inner rotor motor, it is characterised in that: the paddle seat group Part includes the paddle seat liner for being located at the shaft end, and lining is cased with paddle seat in the paddle seat, and the paddle seat passes through third screw thread Fastener is fixedly connected with the shaft.
8. fog machine according to claim 1 permanent-magnetic brush-less DC inner rotor motor, it is characterised in that: the shaft is Hollow shaft.
9. fog machine according to claim 1 permanent-magnetic brush-less DC inner rotor motor, it is characterised in that: in the rotor Lining is made of 7075 aluminium alloys, and the rotor liner includes inner ring, and the centre bore is arranged among inner ring;The inner ring and institute It states outer ring to be connected by spoke, forms lightening hole between spoke.
10. -9 described in any item fog machines permanent-magnetic brush-less DC inner rotor motor according to claim 1, it is characterised in that: The first end cover and the second end cover include the ribs of cover board and radial setting on the cover board.
CN201710394040.2A 2017-05-28 2017-05-28 Fog machine permanent-magnetic brush-less DC inner rotor motor Active CN107147232B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710394040.2A CN107147232B (en) 2017-05-28 2017-05-28 Fog machine permanent-magnetic brush-less DC inner rotor motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710394040.2A CN107147232B (en) 2017-05-28 2017-05-28 Fog machine permanent-magnetic brush-less DC inner rotor motor

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CN107147232A CN107147232A (en) 2017-09-08
CN107147232B true CN107147232B (en) 2019-02-05

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117559740B (en) * 2024-01-11 2024-04-05 莫安迪(苏州)电机技术有限公司 ECI motor inner rotor combined machining device and application method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4888509A (en) * 1988-02-05 1989-12-19 Jaroslav Tomasek Brushless servo motor construction and alignment
JPH06205572A (en) * 1992-12-28 1994-07-22 Ricoh Co Ltd Inner rotor type brushless motor
CN205509708U (en) * 2016-04-07 2016-08-24 杭州启飞智能科技有限公司 Plant protection unmanned aerial vehicle centrifuging spray head motor fixing bracket
CN206135597U (en) * 2016-10-11 2017-04-26 天佑电器(苏州)有限公司 Motor and have its garden instrument

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4888509A (en) * 1988-02-05 1989-12-19 Jaroslav Tomasek Brushless servo motor construction and alignment
JPH06205572A (en) * 1992-12-28 1994-07-22 Ricoh Co Ltd Inner rotor type brushless motor
CN205509708U (en) * 2016-04-07 2016-08-24 杭州启飞智能科技有限公司 Plant protection unmanned aerial vehicle centrifuging spray head motor fixing bracket
CN206135597U (en) * 2016-10-11 2017-04-26 天佑电器(苏州)有限公司 Motor and have its garden instrument

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