CN106992632B - Casing internal circulation air-cooled external rotor brushless DC motor - Google Patents
Casing internal circulation air-cooled external rotor brushless DC motor Download PDFInfo
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- CN106992632B CN106992632B CN201710418496.8A CN201710418496A CN106992632B CN 106992632 B CN106992632 B CN 106992632B CN 201710418496 A CN201710418496 A CN 201710418496A CN 106992632 B CN106992632 B CN 106992632B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/08—Arrangements for cooling or ventilating by gaseous cooling medium circulating wholly within the machine casing
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses a shell internal circulation air-cooling outer rotor brushless direct current motor, and relates to a motor. Adopt labyrinth seal structure between stator part and the rotor part, there is interior fan blade radially inboard of the rotor casing of rotor part, and there is the heat dissipation boss radially outside of the rotor core of rotor part, and after the rotor part assembly, the radial surface of heat dissipation boss is located the radial outside of rotor casing, has the iron core wind channel on the rotor core, when the motor was in operation, the internal circulation cooling wind that interior fan blade produced along the gap between two adjacent stator windings of iron core wind channel and stator part at rotor cavity circulation flow, the internal circulation cooling wind that interior fan blade produced shifts the rotor core to the heat that stator winding produced through the convection current mode, and this heat passes through the radial surface of heat dissipation boss again through the conduction mode, and the heat of conducting to the radial surface of heat dissipation boss is taken away to the cooling wind that produces by outer fan blade at last.
Description
Technical field
The present invention is circulating air cooling external rotor brushless DC motor in a kind of shell, is related to a kind of motor, especially
It is related to circulating air cooling external rotor brushless DC motor in a kind of shell.
Background technique
Common external rotor brushless DC motor majority is applied to the small-sized ventilating fan of industrial premises or business place, with
And applied to computer, the minute ventilation blower of electronic equipment chassis ventilating and cooling.Heat transfer mode has conduction, convection current, radiation.
For motor, the heat that open type fan-ventilated motor stator winding generates mainly uses convection type to radiate, by
The cooling wind that fan generates takes away the heat of stator winding generation, and radiating efficiency is higher.The disadvantage is that dust is able to enter motor
Inner cavity is not able to satisfy motor waterproof and dustproof, explosion-proof design requirement.Totally enclosed type fan-ventilated motor stator winding produces
Raw heat mainly passes through conduction pattern and is transferred to motor casing, then is radiated by convection type, the cooling generated by fan
Wind takes away the heat of conduction to motor casing, and radiating efficiency is lower.Advantage is that dust not can enter motor inner cavity, motor
Protective performance it is high.
Common external rotor brushless DC motor applied to ventilating fan uses semi-enclosed structure, default minor structure
Cause stator winding generate heat mainly radiation mode is used to be transferred to rotor core, the heat pass through again conduction pattern from turn
Sub- iron core is transferred to motor casing, and the heat of conduction to motor casing is finally taken away by the cooling wind that fan generates.Stator
The efficiency that the heat that winding generates is radiated by radiation mode is minimum.The default minor structure of common external rotor brushless DC motor
The promotion of stator winding heat dissipation efficiency is constrained, that is, not can avoid dust and enter motor inner cavity, and be unfavorable for motor stator
Winding heat dissipation, therefore hinder the popularization and application of common external rotor brushless DC motor.
Summary of the invention
The purpose of the present invention is overcoming common external rotor brushless DC motor using semi-enclosed structure, that is, not can avoid
Dust enters motor inner cavity, and the shortcomings that be unfavorable for the heat dissipation of motor stator winding, provide in a kind of shell and turn outside circulating air cooling
Sub- brushless direct current motor while avoiding dust from entering motor inner cavity, and can improve motor stator winding heat dissipation effect
Rate.Embodiment of the present invention is as follows:
Circulating air cooling external rotor brushless DC motor includes stator component, rotor part in shell.The motor is outer
Rotator type structure, uses labyrinth seal structure between stator component and rotor part, the rotor case diameter of rotor part is inside
There is internal fan blade in side, and the rotor core radial outside of rotor part has radiating boss, after rotor part assembly, radiating boss diameter
Exterior surface is located at rotor case radial outside, cored air duct on rotor core, the motor at runtime, internal fan leaf
The interior circulating cooling wind that piece generates is along the gap between iron core air duct and the two neighboring stator winding of stator component, in rotor
Inner cavity circulates, the interior circulating cooling wind that internal fan blade generates, and is turned by the heat that convection type generates stator winding
Rotor core is moved to, which passes through conduction pattern again and be transferred to radiating boss radially-outer surface, is finally produced by exogenous wind fan leaf
Raw cooling wind takes away the heat of conduction to radiating boss radially-outer surface.
Rotor part includes rotor case, shaft, guide ring, permanent magnet, rotor core, split washer.Rotor case is in
Cylindrical shape closed at one end, rotor case, which is closed among on the inside of one end, a deflection cone, and there is connection groove on deflection cone top, turns
Subshell closes one end inner surface to several internal fan blades two uniformly distributed between deflection cone radially-outer surface, internal fan blade two
Circumferencial direction section is L-shaped, there is an internal fan blade one, one circumference of internal fan blade between two neighboring internal fan blade two
Direction section is L-shaped, is air distribution outlet between internal fan blade one and deflection cone radially-outer surface, and rotor case radially inner side is to turn
Sub- inner cavity, uniformly distributed several in rotor case radially-outer surface centre position pass through hole, and passing through hole is through-hole, rotor case non-close
One end radial outside has support ring, and there are the labyrinth teeth one of several annular concentrics, two neighboring fan in the axially external one end of support ring
It is maze trough one between palace tooth one.Shaft is cylindrical, and shaft end surface has annular groove, and opening is equipped at annular groove
Retaining ring, the shaft other end are fixed in the connection groove of rotor case.
In a ring, rotor core radial outside is evenly distributed with several radiating boss to rotor core, two neighboring radiating boss it
Between be heat dissipation groove, each radiating boss radially inner side has axially extending bore, which is iron core air duct one.Rotor case note
When modeling processing, rotor core is mounted on the radially inner side of rotor case, and is mounted on the radiating boss of rotor core and turns
Subshell passes through in hole, and iron core air duct one is located in the rotor internal cavity of rotor case radially inner side, radiating boss radial direction appearance
Face is located at rotor case radial outside, has axial air gap between the heat dissipation groove and rotor case inner radial surface of rotor core,
The axial air gap is iron core air duct two.
In a ring, guide ring circumferencial direction section is L-shaped for guide ring, is air inlet hole among guide ring.Guide ring section is big
Axial end face be guide ring axially inner side end face, the other end is guide ring axially external end face.When rotor part assembles, first
Guide ring is mounted on rotor case radially inner side, and makes guide ring axially inner side end face and internal fan blade one and internal fan leaf
The contact of two axial end face of piece is installed together, and keeps guide ring radially-outer surface and internal fan blade one and internal fan blade two radial
Inner surface contact is installed together, the shape between interior fan blade one, internal fan blade two, guide ring and rotor housing interior surface
At blade air duct.Then the permanent magnet of several tile shapes is mounted on rotor core inner radial surface, and makes permanent magnet axis
Inside side end face is contacted with guide ring axially external end face to be installed together, adjacent permanent magnet inner radial surface opposite sex magnetic each other
Pole forms rotor airgap inner cavity in permanent magnet radially inner side.
Stator component includes axle sleeve, controller, out frame, winding skeleton one, stator core, stator winding, winding bone
Frame two.Axle sleeve is cylindrical, is axis hole among axle sleeve.Controller includes Hall sensor.It is base cylinder among out frame
Body, base cylinder radially inner side is axle sleeve chamber, and it is intracavitary that axle sleeve is mounted on axle sleeve.One end organic block flange of out frame, base
Flange is used for fixed stator component.Base flange radial outside end face is evenly distributed with the labyrinth teeth two of several annular concentrics, and adjacent two
It is maze trough two between a labyrinth teeth two.Base flange axially inner side of the controller installation site in out frame.
It is ring-shaped stator yoke among stator core, is stator core mounting hole, stator yoke diameter among stator yoke
Edge is evenly equipped with several magnetic pole of the stator outward, and each magnetic pole of the stator radial outside is stator pole shoes, two neighboring stator magnet
It is stator slot between pole.Winding skeleton one, the axial cross section of winding skeleton two are identical as the axial cross section of stator core.Winding
Insulating cylinder one is ring-shaped among skeleton one, one radial outside edge of insulating cylinder is evenly equipped with several insulation boards one, each insulation
One radial outside of plate is collets one, is skeleton wire casing between two neighboring insulation board one.One axis of collets of winding skeleton one
There are several welded posts in one end outward.Insulating cylinder two, two radial outside edge of insulating cylinder are ring-shaped among winding skeleton two
Several insulation boards two are evenly equipped with, it is bone between two neighboring insulation board two that each two radial outside of insulation board, which is collets two,
Stringing slot.
When stator component assembles, winding skeleton one, winding skeleton two are first separately mounted to stator core axial ends, and
Stator winding is wound on each magnetic pole of the stator and its insulation board of axial ends one and insulation board two respectively.Stator core
Intermediate stator core mounting hole is mounted on the base cylinder radially-outer surface of out frame.Controller is installed by welded post
On stator component, stator winding and controller are connected with conducting wire.
When the motor assembles, the shaft of rotor part is mounted in the axle sleeve axis hole of stator component, passes through shaft handle
Rotor part is mounted on stator component radial outside, at this point, the labyrinth teeth one of rotor case is inserted into the maze trough two of out frame
In, the labyrinth teeth two of out frame is inserted into the maze trough one of rotor case, is had between sealing between labyrinth teeth one and labyrinth teeth two
Gap.When the motor is as ventilating fan motor, exogenous wind fan leaf is directly inlaid in rotor case radially-outer surface.
In the process of running, rotor case rotation, internal fan blade one, internal fan blade two make blade wind to the motor
Air in road generates centrifugal force, forms interior circulating cooling wind, and interior circulating cooling wind passes through rotor from blade air duct respectively
Iron core air duct one and iron core air duct two on iron core, interior circulating cooling wind using stator component two neighboring stator winding it
Between gap, the air distribution outlet of air inlet hole and rotor case that interior circulating cooling wind successively passes through guide ring returns in blade air duct.
Interior circulating cooling wind along interior circulating cooling wind flow path when rotor internal cavity circulates, by convection type stator around
The heat that group generates is transferred to rotor core, which passes through conduction pattern again and be transferred to radiating boss radially-outer surface, finally
The heat of conduction to radiating boss radially-outer surface is taken away by the cooling wind that exogenous wind fan leaf generates.The motor stator winding
The heat of generation is radiated using convection current and conduction pattern, and radiating efficiency is high.The stator component and rotor part of the motor
Between use labyrinth seal structure, it is ensured that extraneous dust will not enter motor inner cavity.
Detailed description of the invention
Figure of description is the structure chart and schematic diagram of circulating air cooling external rotor brushless DC motor in shell.Wherein Fig. 1
It is the axonometric drawing of the motor.Fig. 2 is the isometric cutaway view of the motor.Fig. 3 is the isometric cutaway view of rotor part.Figure
4 be the axonometric drawing of shell.Fig. 5 is the axonometric drawing of guide ring.Fig. 6 is the axonometric drawing of rotor core.Fig. 7 is the assembly position of permanent magnet
Set schematic diagram.Fig. 8 is axonometric drawing of the external fan blading in the rotor part of shell radial outside.Fig. 9 is stator component
Axonometric drawing.Figure 10 is the isometric cutaway view that out frame and axle sleeve are installed together.Figure 11 is the axonometric drawing of controller.Figure 12 is
The axonometric drawing of stator core.Figure 13 is the axonometric drawing of winding skeleton one.Figure 14 is the axonometric drawing of winding skeleton two.Figure of description
Middle capital N and S represent rotor magnetic pole polarity.
Internal fan blade 1, rotor case 2, deflection cone 3, connection groove 4, shaft 5, axle sleeve 6, water conservancy diversion are labeled in figure
Ring 7, permanent magnet 8, rotor core 9, radiating boss 10, labyrinth teeth 1, labyrinth teeth 2 12, interior circulating cooling wind flow direction
13, interior circulating cooling wind flow path 14, Hall sensor 15, controller 16, out frame 17, winding skeleton 1, stator
Iron core 19, stator winding 20, winding skeleton 2 21, blade air duct 22, maze trough 1, iron core air duct 1, split washer 25,
Rotor internal cavity 26, support ring 27, iron core air duct 2 28, pass through hole 29, internal fan blade 2 30, air inlet hole 31, heat dissipation groove 32,
Exogenous wind fan leaf 33, maze trough 2 34, base cylinder 35, stator pole shoes 36, magnetic pole of the stator 37, stator yoke 38, stator core
Mounting hole 39, stator slot 40, skeleton wire casing 41, collets 1, insulation board 1, insulating cylinder 1, welded post 45, insulation
Block 2 46, insulation board 2 47, insulating cylinder 2 48, base flange 49, air distribution outlet 50.
Specific embodiment
The present invention is further discussed below with reference to the accompanying drawing.
Referring to Fig.1, Fig. 2, circulating air cooling external rotor brushless DC motor includes stator component, rotor part in shell.Institute
Stating motor is external-rotor-type structure, and labyrinth seal structure is used between stator component and rotor part, and rotor part turns
2 radially inner side of subshell has internal fan blade, and 9 radial outside of rotor core of rotor part has radiating boss 10, rotor part
After assembly, 10 radially-outer surface of radiating boss is located at 2 radial outside of rotor case, cored air duct on rotor core 9, the electricity
Motivation at runtime, internal fan blade generate interior circulating cooling wind along iron core air duct and stator component two neighboring stator
Gap between winding 20 is circulated in rotor internal cavity 26, the interior circulating cooling wind that internal fan blade generates, by convection current side
The heat that stator winding 20 generates is transferred to rotor core 9 by formula, which passes through conduction pattern again and be transferred to radiating boss 10
Radially-outer surface is finally taken away the heat of conduction to 10 radially-outer surface of radiating boss by the cooling wind that exogenous wind fan leaf 33 generates
Amount.
Referring to Fig. 2 to Fig. 8, rotor part includes rotor case 2, shaft 5, guide ring 7, permanent magnet 8, rotor core 9, opens
Mouth retaining ring 25.Rotor case 2 is in cylindrical shape closed at one end, and rotor case 2, which is closed among on the inside of one end, a deflection cone 3,
There is connection groove 4 on 3 top of deflection cone, and it is several to being evenly distributed between 3 radially-outer surface of deflection cone that rotor case 2 closes one end inner surface
A internal fan blade 2 30,2 30 circumferencial direction section of internal fan blade is L-shaped, has between two neighboring internal fan blade 2 30
One internal fan blade 1, one 1 circumferencial direction section of internal fan blade is L-shaped, and internal fan blade 1 and 3 diameter of deflection cone are outside
It is air distribution outlet 50 between surface, 2 radially inner side of rotor case is rotor internal cavity 26, position among 2 radially-outer surface of rotor case
Uniformly distributed several pass through hole 29, and passing through hole 29 is through-hole, and 2 non-close one end radial outside of rotor case has support ring 27, support
There is the labyrinth teeth 1 of several annular concentrics in the axially external one end of ring 27, is maze trough one between two neighboring labyrinth teeth 1
23.Shaft 5 is cylindrical, and 5 end surface of shaft has annular groove, and split washer 25 is equipped at annular groove, and shaft 5 is another
End is fixed in the connection groove 4 of rotor case 2.
In a ring, 9 radial outside of rotor core is evenly distributed with several radiating boss 10 to rotor core 9, and two neighboring heat dissipation is convex
It is heat dissipation groove 32 between platform 10, each 10 radially inner side of radiating boss has axially extending bore, which is iron core air duct one
24.When 2 injection molding of rotor case, rotor core 9 is mounted on the radially inner side of rotor case 2, and makes rotor core 9
Radiating boss 10 is mounted on the passing through in hole 29 of rotor case 2, and iron core air duct 1 is located at the rotor of 2 radially inner side of rotor case
In inner cavity 26,10 radially-outer surface of radiating boss is located at 2 radial outside of rotor case, the heat dissipation groove 32 of rotor core 9 with turn
There is axial air gap between 2 inner radial surface of subshell, which is iron core air duct 2 28.
In a ring, 7 circumferencial direction section of guide ring is L-shaped for guide ring 7, is air inlet hole 31 among guide ring 7.Guide ring 7
The big axial end face in section is 7 axially inner side end face of guide ring, and the other end is 7 axially external end face of guide ring.Rotor part dress
Guide ring 7 is first mounted on 2 radially inner side of rotor case, and makes 7 axially inner side end face of guide ring and internal fan blade by timing
1 and 2 30 axial end face of internal fan blade contact be installed together, make 7 radially-outer surface of guide ring and internal fan blade 1
It is installed together with the contact of 2 30 inner radial surface of internal fan blade, in interior fan blade 1, internal fan blade 2 30, water conservancy diversion
Blade air duct 22 is formed between 2 inner surface of ring 7 and rotor case.Then the permanent magnet of several tile shapes 8 is mounted on rotor
9 inner radial surface of iron core, and contact 8 axially inner side end face of permanent magnet with 7 axially external end face of guide ring and be installed together,
8 inner radial surface of adjacent permanent magnet opposite pole each other forms rotor airgap inner cavity in 8 radially inner side of permanent magnet.
Referring to Fig. 9 to Figure 14, stator component includes axle sleeve 6, controller 16, out frame 17, winding skeleton 1, stator
Iron core 19, stator winding 20, winding skeleton 2 21.Axle sleeve 6 is cylindrical, is axis hole among axle sleeve 6.Controller 16 includes suddenly
That sensor 15.It is base cylinder 35 among out frame 17,35 radially inner side of base cylinder is axle sleeve chamber, and axle sleeve 6 is mounted on
Axle sleeve is intracavitary.One end organic block flange 49 of out frame 17, base flange 49 are used for fixed stator component.49 diameter of base flange
Outside side end face is evenly distributed with the labyrinth teeth 2 12 of several annular concentrics, is maze trough 2 34 between two neighboring labyrinth teeth 2 12.
Base flange 49 axially inner side of 16 installation site of controller in out frame 17.
It is ring-shaped stator yoke 38 among stator core 19, is stator core mounting hole 39 among stator yoke 38, it is fixed
Sub- 38 radial outside edge of magnetic yoke is evenly equipped with several magnetic pole of the stator 37, and each 37 radial outside of magnetic pole of the stator is stator pole shoes
36, it is stator slot 40 between two neighboring magnetic pole of the stator 37.Winding skeleton 1, the axial cross section of winding skeleton 2 21 and fixed
The axial cross section of sub- iron core 19 is identical.Insulating cylinder 1, one 44 radial outside of insulating cylinder are ring-shaped among winding skeleton 1
Edge is evenly equipped with several insulation boards 1, and each one 43 radial outside of insulation board is collets 1, two neighboring insulation board
It is skeleton wire casing 41 between one 43.There are several welded posts 45 in axially external one end of collets 1 of winding skeleton 1.Around
It is ring-shaped insulating cylinder 2 48 among group skeleton 2 21,2 48 radial outside edge of insulating cylinder is evenly equipped with several insulation boards two
47, each 2 47 radial outside of insulation board is collets 2 46, is skeleton wire casing 41 between two neighboring insulation board 2 47.
When stator component assembles, it is axial that winding skeleton 1, winding skeleton 2 21 are first separately mounted to stator core 19
Both ends, and respectively on each magnetic pole of the stator 37 and its insulation board 1 and insulation board 2 47 of axial ends wind stator around
Group 20.The radial appearance of the base cylinder 35 that stator core mounting hole 39 among stator core 19 is mounted on out frame 17
Face.Controller 16 is mounted on stator component by welded post 45, stator winding 20 is connect with controller 16 with conducting wire.
When the motor assembles, the shaft 5 of rotor part is mounted in 6 axis hole of axle sleeve of stator component, passes through shaft 5
Rotor part is mounted on stator component radial outside, at this point, the labyrinth teeth 1 of rotor case 2 is inserted into the fan of out frame 17
In palace slot 2 34, the labyrinth teeth 2 12 of out frame 17 is inserted into the maze trough 1 of rotor case 2, labyrinth teeth 1 and labyrinth
There is seal clearance between tooth 2 12.When the motor is as ventilating fan motor, exogenous wind fan leaf 33, which is directly inlaid in, to be turned
2 radially-outer surface of subshell.
Referring to figs. 1 to Figure 14, in the process of running, rotor case 2 rotates the motor, internal fan blade 1, interior wind
Fan leaf 2 30 makes the air in blade air duct 22 generate centrifugal force, formed in circulating cooling wind, interior circulating cooling wind is from blade
Air duct 22 is set out, respectively by the iron core air duct 1 and iron core air duct 2 28 on rotor core 9, interior circulating cooling wind using
Gap between the two neighboring stator winding 20 of stator component, interior circulating cooling wind successively pass through the air inlet hole 31 of guide ring 7
It is returned in blade air duct 22 with the air distribution outlet 50 of rotor case 2.Interior circulating cooling wind is along interior circulating cooling wind flow path 14
When rotor internal cavity 26 circulates, the heat that stator winding 20 generates is transferred to by convection type by rotor core 9, the heat
Amount is transferred to 10 radially-outer surface of radiating boss by conduction pattern again, is finally taken away by the cooling wind that exogenous wind fan leaf 33 generates
It conducts to the heat of 10 radially-outer surface of radiating boss.The heat that the motor stator winding 20 generates uses convection current and conduction
Mode radiates, and radiating efficiency is high.Labyrinth seal structure is used between the stator component and rotor part of the motor, really
Motor inner cavity will not be entered by protecting extraneous dust.
Claims (1)
1. circulating air cooling external rotor brushless DC motor in a kind of shell, including stator component, rotor part；It is characterized by:
The motor is external-rotor-type structure, and labyrinth seal structure is used between stator component and rotor part, rotor part
Rotor case (2) radially inner side has internal fan blade, and rotor core (9) radial outside of rotor part has radiating boss (10),
After rotor part assembly, radiating boss (10) radially-outer surface is located at rotor case (2) radial outside, and rotor core has on (9)
Iron core air duct, at runtime, the interior circulating cooling wind that internal fan blade generates is along iron core air duct and stator department for the motor
Gap between the two neighboring stator winding (20) of part is circulated in rotor internal cavity (26), and internal fan blade generates interior
The heat that stator winding (20) generates is transferred to rotor core (9) by convection type by circulating cooling wind, which passes through again
Conduction pattern is transferred to radiating boss (10) radially-outer surface, finally takes away conduction by the cooling wind that exogenous wind fan leaf (33) generate
To the heat of radiating boss (10) radially-outer surface；
Rotor part includes rotor case (2), shaft (5), guide ring (7), permanent magnet (8), rotor core (9), split washer
(25)；Rotor case (2) is in cylindrical shape closed at one end, and rotor case (2) closing one end inside is intermediate a deflection cone
(3), deflection cone (3) top has connection groove (4), and rotor case (2) closes one end inner surface to deflection cone (3) radially-outer surface
Between several uniformly distributed internal fan blades two (30), internal fan blade two (30) circumferencial direction section is L-shaped, two neighboring interior wind
There is an internal fan blade one (1) between fan leaf two (30), internal fan blade one (1) circumferencial direction section is L-shaped, internal fan
It is air distribution outlet (50) between blade one (1) and deflection cone (3) radially-outer surface, rotor case (2) radially inner side is rotor internal cavity
(26), uniformly distributed several in position pass through hole (29) among rotor case (2) radially-outer surface, and passing through hole (29) is through-hole, rotor
Shell (2) non-close one end radial outside has support ring (27), and there are several annular concentrics in support ring (27) axially external one end
Labyrinth teeth one (11), be maze trough one (23) between two neighboring labyrinth teeth one (11)；Shaft (5) is cylindrical, shaft (5)
End surface has annular groove, is equipped at annular groove split washer (25), and shaft (5) other end is fixed on rotor case
(2) in connection groove (4)；
In a ring, rotor core (9) radial outside is evenly distributed with several radiating boss (10), two neighboring heat dissipation to rotor core (9)
It is heat dissipation groove (32) between boss (10), each radiating boss (10) radially inner side has axially extending bore, which is iron
Core air duct one (24)；When rotor case (2) injection molding, rotor core (9) is mounted on the radially inner side of rotor case (2),
And the radiating boss (10) of rotor core (9) is made to be mounted on the passing through in hole (29) of rotor case (2), iron core air duct one (24)
In the rotor internal cavity (26) of rotor case (2) radially inner side, radiating boss (10) radially-outer surface is located at rotor case (2)
Radial outside has axial air gap between the heat dissipation groove (32) and rotor case (2) inner radial surface of rotor core (9), the axis
It is iron core air duct two (28) to gap；
In a ring, guide ring (7) circumferencial direction section is L-shaped for guide ring (7), and it is air inlet hole (31) that guide ring (7) is intermediate；Water conservancy diversion
The big axial end face in ring (7) section is guide ring (7) axially inner side end face, and the other end is guide ring (7) axially external end face；Turn
When subassembly assembles, guide ring (7) is first mounted on rotor case (2) radially inner side, and make guide ring (7) axially inner side end
Face contacts and is installed together with internal fan blade one (1) and internal fan blade two (30) axial end face, keeps guide ring (7) diameter outside
Surface contacts and is installed together with internal fan blade one (1) and internal fan blade two (30) inner radial surface, in interior fan blade
Blade air duct (22) are formed between one (1), internal fan blade two (30), guide ring (7) and rotor case (2) inner surface；Then
The permanent magnet (8) of several tile shapes is mounted on rotor core (9) inner radial surface, and makes permanent magnet (8) axially inner side
End face contacts with guide ring (7) axially external end face and is installed together, adjacent permanent magnet (8) inner radial surface anisotropic magnetic each other
Pole forms rotor airgap inner cavity in permanent magnet (8) radially inner side；
Stator component include axle sleeve (6), controller (16), out frame (17), winding skeleton one (18), stator core (19),
Stator winding (20), winding skeleton two (21)；Axle sleeve (6) is cylindrical, and it is axis hole that axle sleeve (6) is intermediate；Controller (16) includes
There are Hall sensor (15)；It is base cylinder (35) that out frame (17) is intermediate, and base cylinder (35) radially inner side is axle sleeve chamber,
It is intracavitary that axle sleeve (6) is mounted on axle sleeve；One end organic block flange (49) of out frame (17), base flange (49) is for fixed fixed
Subassembly；Base flange (49) radial outside end face is evenly distributed with the labyrinth teeth two (12) of several annular concentrics, two neighboring labyrinth
It is maze trough two (34) between tooth two (12)；Controller (16) installation site is axial in the base flange (49) of out frame (17)
Inside；
It is ring-shaped stator yoke (38) among stator core (19), it is stator core mounting hole that stator yoke (38) is intermediate
(39), stator yoke (38) radial outside edge is evenly equipped with several magnetic pole of the stator (37), and each magnetic pole of the stator (37) diameter is outside
Side is stator pole shoes (36), is stator slot (40) between two neighboring magnetic pole of the stator (37)；Winding skeleton one (18), winding bone
The axial cross section of frame two (21) is identical as the axial cross section of stator core (19)；Insulation is ring-shaped among winding skeleton one (18)
One (44) of cylinder, insulating cylinder one (44) radial outside edge is evenly equipped with several insulation boards one (43), each insulation board one (43) diameter
It is collets one (42) outward, is skeleton wire casing (41) between two neighboring insulation board one (43)；Winding skeleton one (18)
There are several welded posts (45) in the axially external one end of collets one (42)；Insulating cylinder two is ring-shaped among winding skeleton two (21)
(48), insulating cylinder two (48) radial outside edge is evenly equipped with several insulation boards two (47), and each insulation board two (47) diameter is outside
Side is collets two (46), is skeleton wire casing (41) between two neighboring insulation board two (47)；
When stator component assembles, winding skeleton one (18), winding skeleton two (21) are first separately mounted to stator core (19) axis
To both ends, and twined on each magnetic pole of the stator (37) and its insulation board one (43) and insulation board two (47) of axial ends respectively
Around stator winding (20)；The intermediate stator core mounting hole (39) of stator core (19) is mounted on the base of out frame (17)
Cylinder (35) radially-outer surface；Controller (16) is mounted on stator component by welded post (45), stator winding (20)
It is connect with controller (16) with conducting wire；
When the motor assembles, the shaft (5) of rotor part is mounted in axle sleeve (6) axis hole of stator component, passes through shaft
(5) rotor part is mounted on stator component radial outside, at this point, the labyrinth teeth one (11) of rotor case (2) is inserted into stator
In the maze trough two (34) of seat (17), the maze trough one of labyrinth teeth two (12) insertion rotor case (2) of out frame (17)
(23) in, there is seal clearance between labyrinth teeth one (11) and labyrinth teeth two (12)；The motor is as ventilating fan motor
When, exogenous wind fan leaf (33) is directly inlaid in rotor case (2) radially-outer surface.
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| CN201710418496.8A CN106992632B (en) | 2017-06-06 | 2017-06-06 | Casing internal circulation air-cooled external rotor brushless DC motor |
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| CN201710418496.8A CN106992632B (en) | 2017-06-06 | 2017-06-06 | Casing internal circulation air-cooled external rotor brushless DC motor |
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| CN106992632A CN106992632A (en) | 2017-07-28 |
| CN106992632B true CN106992632B (en) | 2019-01-18 |
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| CN201710418496.8A Active CN106992632B (en) | 2017-06-06 | 2017-06-06 | Casing internal circulation air-cooled external rotor brushless DC motor |
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Families Citing this family (12)
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| CN107827009A (en) * | 2017-11-22 | 2018-03-23 | 董学良 | A kind of full electric drive roller of air-cooled structure permanent magnetism |
| CN110661378B (en) * | 2018-06-29 | 2021-10-22 | 南京德朔实业有限公司 | Hair-dryer and garden instrument |
| CN109713813A (en) * | 2019-02-02 | 2019-05-03 | 沈阳工大电机有限公司 | A kind of novel double outer cold external rotor permanent magnet synchronous machines |
| CN110131319B (en) * | 2019-04-03 | 2020-09-25 | 上海矶怃科技有限公司 | Device for cooling heat generating components for supporting or driving rotating parts |
| CN110224518A (en) * | 2019-07-16 | 2019-09-10 | 宋振明 | A kind of fan motor and centrifugal blower |
| CN111547216B (en) * | 2020-04-09 | 2022-07-26 | 武汉船用机械有限责任公司 | Pod propeller and mounting method of stator of propelling motor of pod propeller |
| CN111760201B (en) * | 2020-07-04 | 2022-02-15 | 黄艳民 | Medical spectral therapeutic instrument |
| CN111641292A (en) * | 2020-07-13 | 2020-09-08 | 安徽德科电气科技有限公司 | Internal circulation heat dissipation generator |
| CN112421881B (en) * | 2020-11-02 | 2021-09-07 | 合肥珺安机电设备有限公司 | External rotor electric machine with heat dissipation function |
| CN113794313A (en) * | 2021-09-22 | 2021-12-14 | 中车株洲电机有限公司 | Air-cooled motor |
| CN116696800B (en) * | 2023-08-04 | 2023-10-20 | 鸿陆智能科技(山东)有限公司 | Protection device for magnetic suspension compressor and magnetic suspension compressor |
| CN117477854B (en) * | 2023-12-26 | 2024-03-12 | 常州优谷新能源科技股份有限公司 | Generator suitable for wind power semi-direct drive unit |
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| EP0387743A1 (en) * | 1989-03-16 | 1990-09-19 | Gec Alsthom Moteurs Sa | Enclosed air cooled electrical motor and its manufacturing method |
| CN106329826A (en) * | 2015-06-29 | 2017-01-11 | 苏州金鼎机械制造有限公司 | Inside and outside cooled generator |
| CN206117385U (en) * | 2016-10-08 | 2017-04-19 | 江苏美邦电机科技有限公司 | High -efficient air cooling motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0387743A1 (en) * | 1989-03-16 | 1990-09-19 | Gec Alsthom Moteurs Sa | Enclosed air cooled electrical motor and its manufacturing method |
| CN106329826A (en) * | 2015-06-29 | 2017-01-11 | 苏州金鼎机械制造有限公司 | Inside and outside cooled generator |
| CN206117385U (en) * | 2016-10-08 | 2017-04-19 | 江苏美邦电机科技有限公司 | High -efficient air cooling motor |
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| CN106992632A (en) | 2017-07-28 |
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