CN209472453U - A kind of three-phase slotless high-speed motor - Google Patents
A kind of three-phase slotless high-speed motor Download PDFInfo
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- CN209472453U CN209472453U CN201920233680.XU CN201920233680U CN209472453U CN 209472453 U CN209472453 U CN 209472453U CN 201920233680 U CN201920233680 U CN 201920233680U CN 209472453 U CN209472453 U CN 209472453U
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- permanent magnet
- impeller
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Abstract
The utility model discloses a kind of three-phase slotless high-speed motor, including electric machine casing, rotor assembly, bearing assembly, impeller assembly and stator module, the electric machine casing includes motor housing, motor inner casing and multiple diffusion ribs；The rotor assembly includes shaft and permanent magnet, and the shaft is mounted on the inner wall of the motor inner casing by the bearing assembly；The impeller assembly includes metallic sheath and impeller；The stator module includes stator case, stator, insulating layer, cup type winding, backing plate, pcb board and needle stand, the stator by multiple silicon steel sheet groups to link together at.The utility model torque output stationarity greatly increases, and magnetic field alternative frequency can be made to halve, thus eddy-current loss and magnetic hystersis loss are lower；In magnetic structure, leakage field is less, and useful flux utilization rate is higher, is conducive to the raising of motor delivery efficiency and output power.
Description
Technical field
The utility model belongs to high-speed permanent magnet motor technical field, more particularly, to a kind of three-phase slotless fan motor.
Background technique
High-speed motor is widely used in the fields such as living electric apparatus, medical instrument, engraving, spraying, compared to middle low speed power
Motor scheme, high speed or super high speed motor tend to the cognition for overturning consumer to traditional product.In most of applications, eventually
Hold requirement of the product to bulk higher and higher, this requires the high-speed motor after miniaturization can still obtain it is expected defeated
Power out.In addition, the high-speed motor of low vibration, low noise will be so that product be more favored by client.
Currently, the power motor installed in living electric apparatus product, such as Blowing drum, air purifier, dust catcher, use
Small power high speed motor generallys use the single-phase and three-phase motor scheme of permanent-magnet type.
Application No. is 201611140022.3,201611140021.9,201611141825.0 patents to disclose list
The technology of phase permanent-magnet brushless motor, these single-phase permanent brushless electric machine structures are simple, easily manufactured, but intrinsic cogging torque
It causes output torque fluctuation obvious, be easy to cause apparent vibration and noise, and the build-in attribute of monophase machine obtain it can not
Obtain the output power greater than three-phase motor.
And for there is the three-phase permanent magnet brushless motor of tooth slot structure, it is limited by winding construction, in product miniaturization
There is no advantage in demand, especially under lower pressure, winding copper factor is lower (winding enameled wire is thicker), moreover, three-phase permanent
The cogging torque of brushless motor is still obvious, is not able to satisfy the high request of low vibration, low noise.
Utility model content
Aiming at the above defects or improvement requirements of the prior art, the utility model provides three-phase slotless high-speed motor,
Slotless torque, torque output stationarity greatly increase, and structure space utilization rate is high.
To achieve the above object, according to the one aspect of the utility model, three-phase slotless high-speed motor, feature are provided
It is, including electric machine casing, rotor assembly, bearing assembly, impeller assembly and stator module, wherein
The axis vertical of the electric machine casing is arranged comprising motor housing, motor inner casing and multiple diffusion ribs, these
The diffusion rib is circumferentially distributed along the periphery of the motor inner casing and they are respectively positioned in the motor housing and motor
Between shell, every diffusion rib respectively along the axially extending of the motor inner casing and connects the motor housing and electricity
Machine inner casing, the top and bottom of the motor housing are more than the motor inner casing；
The rotor assembly includes shaft and permanent magnet, and the shaft is vertically arranged and is installed by the bearing assembly
On the inner wall of the motor inner casing, the permanent magnet is installed on the lower end of the shaft；
The impeller assembly includes metallic sheath and impeller, and the fixed upper end for being installed on the shaft of the metallic sheath is described
Impeller is fixedly connected with the metallic sheath；
The stator module includes stator case, stator, insulating layer, cup type winding, backing plate, pcb board and needle stand, described fixed
The axis vertical of sub- shell is arranged, and the upper end of the stator case is fixedly mounted on the lower end of the motor inner casing, described fixed
Son is by multiple silicon steel sheet groups to link together at these silicon steel sheets are coaxially disposed and by laminated structure from top to bottom one
It rises, the outer ring of each silicon steel sheet is each attached on the stator case, and the insulating layer is tubular and is arranged described
The inner ring of stator, the cup type winding are located in the insulating layer and surround the permanent magnet, the cup type winding and the PCB
Plate electrical connection, the needle stand are arranged on the pcb board, and backing plate is arranged between the stator case and the pcb board.
Preferably, the permanent magnet is the two poles of the earth annular permanent magnet.
Preferably, the metallic sheath is made of aluminium alloy or copper alloy.
Preferably, the impeller is plastic parts and is integrally formed with the metallic sheath integral molded plastic.
Preferably, the shaft carries out annular knurl processing at the position for corresponding to the metallic sheath, and in annular knurl processing
Position be additionally provided with binder.
Preferably, the upper end of the stator case is provided with annular convex platform, and the lower end of the motor inner casing passes through flange
Mode compresses the annular convex platform, so that the stator case be made to be securely joined together with the motor inner casing.
Preferably, the stator case is provided with multiple heat release holes close to one end of motor inner casing.
Preferably, the shaft carries out annular knurl processing at the position for corresponding to the permanent magnet, and in annular knurl processing
Position be additionally provided with binder.
Preferably, the permanent magnet is made of NdFeB material.
In general, it can obtain down the above technical solutions conceived by the present invention are compared with the prior art,
Column the utility model has the advantages that
1) the three-phase slotless high-speed motor of the utility model is compared with single-phase permanent brushless motor, due to use cup type around
Group, winding are not wound around on tooth socket, therefore its slotless torque, torque output stationarity greatly increase, and are especially transported in high speed
(it is greater than 100,000 revs/min) under the conditions of row, it is more advantageous；
2) rotor assembly of the utility model uses two-poled permanent magnets, and magnetic field alternative frequency can be made to halve, thus is vortexed
Loss and magnetic hystersis loss are lower；In magnetic structure, leakage field is less, and useful flux utilization rate is higher, is conducive to motor delivery efficiency
With the raising of output power.
3) the three-phase slotless high-speed motor of the utility model, compared with common three-phase permanent magnet brushless motor, slotless turns
Square, torque output stationarity greatly increase, and (are greater than 100,000 revs/min) under the conditions of high-speed cruising, more advantageous；Structure space
Utilization rate is high, and under the conditions of obtaining same nominal output power, motor size is obviously reduced.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model three-phase slotless fan motor；
Fig. 2 is the cross-sectional view of the utility model three-phase slotless fan motor；
Fig. 3 is the structural schematic diagram of cup type winding in the utility model three-phase slotless fan motor.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.In addition, institute in the various embodiments of the present invention described below
The technical characteristic being related to can be combined with each other as long as they do not conflict with each other.
As shown in FIG. 1 to 3, the utility model discloses a kind of three-phase slotless high-speed motors, including electric machine casing 1, axis
Bearing assembly 2, rotor assembly 3, impeller assembly 4 and stator module 5, wherein
The axis vertical of the electric machine casing 1 is arranged comprising motor housing 11, motor inner casing 12 and multiple diffusion ribs
13, these described diffusion ribs 13 are circumferentially distributed along the periphery of the motor inner casing 12 and they are respectively positioned on outside the motor
Between shell 11 and motor inner casing 12, every diffusion rib 13 is respectively along the axially extending of the motor inner casing 12 and connects
The motor housing 11 and motor inner casing 12 are connect, the top and bottom of the motor housing 11 are more than the motor inner casing 12；
The bearing assembly 2 includes upper and lower two bearings 21 and the preloading spring 22 being arranged between the two bearings 21,
The outer ring of the two bearings 21 is respectively and fixedly installed on the inner wall of the motor inner casing 12, above and below the preloading spring 22
Both ends are connected to respectively on the outer ring of a bearing 21；Preferably, bearing 21 selects ball bearing 21；
The rotor assembly 3 includes shaft 31, axle sleeve 32 and permanent magnet 33, and the shaft 31 is vertically arranged and passes through pre-
The inner ring of tight spring 22 and the two bearings 21, the axle sleeve 32 and the permanent magnet 33 are installed on the shaft 31 respectively
Lower end, and the upper end of the axle sleeve 32 resists the bearing 21 positioned at the lower section of preloading spring 22 and lower end resists the permanent magnet
33 upper end；Preferably, the permanent magnet 33 is the two poles of the earth annular permanent magnet 33.It is resistance to by filling between permanent magnet 33 and shaft 31
The bonding agent of high temperature, the corresponding mating surface of shaft 31 pass through " annular knurl " process, and bonding agent is chimeric with " annular knurl " cylindrical surface, shape
At firm connection, it can prevent circumference when 33 high speed rotation of permanent magnet from skidding.Axle sleeve 32 selects non-magnetic metal, as aluminium closes
Gold plays the role of axially position, while acting on 21 inner ring of ball bearing and make ball bearing after combining with preloading spring 22
21 generate certain pretightning force, can significantly improve 21 noise of ball bearing.33 material selection sintered NdFeB of permanent magnet, possesses
Very high magnetomotive force is powerful magnetic source material, and permanent magnet 33 is the two poles of the earth annular permanent magnet, so that the magnetic field in stator 52 is handed over
Frequency is a half than 33 structure of quadrupole annular permanent magnet, and the magnetic hystersis loss in stator 52 and eddy-current loss is greatly reduced,
Be conducive to the increase of motor delivery efficiency and output power.Permanent magnet 33 is designed to slender structure, thus rotary inertia is very low,
It is suitble to operate under high-speed condition；
The impeller assembly 4 includes metallic sheath 41 and impeller 42, and the fixation of metallic sheath 41 is installed on the shaft 31
Upper end, the impeller 42 are fixedly connected with the metallic sheath 41；41 material of metallic sheath can choose aluminium alloy or copper alloy.Aluminium closes
The density difference of gold and copper alloy is big, can need to reasonably select according to actual product, avoid resonant frequency point, to adjust the electricity
The acoustic vibration effect of machine.For the big copper alloy of density when running at high speed, centrifugal force is bigger, but the size of the motor is small, can be with
It does not consider.Impeller 42 is plastic parts, is integrally formed with 41 integral molded plastic of metallic sheath.Complex-curved plastic & rubber blade 42, than gold
Belonging to the more convenient molding of impeller 42, and the motor size is smaller, plastic & rubber blade 42 can resist the role of tear of centrifugal force, in addition,
Metallic sheath 41 acts as the effect of " skeleton ", makes impeller assembly 4 more " secured ".4 center hole of impeller assembly is matched with shaft 31
Close, shaft 31 accordingly cooperation section use " annular knurl " treatment process, and fill High-strength adhesive bonding, impeller assembly 4 with turn
Axis 31 can both can reach higher bonding strength using interference fit or transition fit form.The axis of impeller assembly 4
It is ensured to installation accuracy by special tooling.
The stator module 5 includes stator case 51, stator 52, insulating layer 53, cup type winding 54, backing plate 55, pcb board 56
It is arranged with the axis vertical of needle stand 57, the stator case 51, and the upper end of the stator case 51 is fixedly mounted on the electricity
The lower end of machine inner casing 12, the stator 52 by multiple silicon steel sheet groups to link together at the coaxial arrangement of, these silicon steel sheets and
Together by laminated structure from top to bottom, the outer ring of each silicon steel sheet is each attached on the stator case 51, described
Insulating layer 53 is tubular and the inner ring that the stator 52 is arranged in, and the cup type winding 54 is hollow structure, is located at described
In insulating layer 53 and the permanent magnet 33 is surrounded, which is electrically connected with the pcb board 56, and the needle stand 57 is arranged
On the pcb board 56, backing plate 55 is arranged between the stator case 51 and the pcb board 56.Silicon steel sheet passes through stamping die
Tool molding, the axial length of needs is laminated by self-clinching.Cup type winding 54 uses Concentrical winding, and winding coefficient is high, and adopts
Be conducive to the increase of motor delivery efficiency and output power so that space utilization rate is higher with enameled wire winding displacement technique.Cup type around
Several the end of a thread of group 54 extend to the corresponding scolding tin hole of pcb board 56 naturally, and 56 scolding tin hole of pcb board is half opening formula, and the end of a thread is facilitated to put
Enter in hole.Pcb board 56 pass through reasonable line arrangement, it can be achieved that cup type winding 54 delta connection and wye connection, in order to reduce " ring
Stream ", preferentially selects wye connection.Needle stand 57 is placed in 56 intermediate region of pcb board, and the cable on electric machine controller is facilitated to plug.Cup
Type winding 54 is mutually overlapped and is formed using multiple unicoils, these unicoils arranged around the permanent magnet 33 and
Surround the shape of a class cylinder.
The upper end of the stator case 51 is provided with annular convex platform 58, the side that the lower end of the motor inner casing 12 passes through flange
Formula compresses the annular convex platform 58, to make the stator case 51 be securely joined together with the motor inner casing 12, with motor inner casing
12 form " secured " entirety.
It is provided on stator case 51 and is evenly arranged several heat release holes with 12 cooperative end part of motor inner casing, high-velocity fluid lacks portion
Divide air-flow that can enter inside stator module 5, the heat that cup type winding 54 generates is taken away rapidly, it is suppressed that caused by the motor feels hot
Motor performance reduces and material ageing problem.
Stator case 51 is made of the superalloy material of magnetic conduction, cast molding.The magneto-crystalline anisotropy of the alloy
Constant and saturation magnetostriction are all close to zero, and initial permeability and maximum permeability are very high, and coercivity and magnetic hystersis loss are very low,
And superalloy material resistivity is high, eddy-current loss is low.Therefore, the motor made using the superalloy material, core loss is extremely low, because
And motor delivery efficiency and output power are further promoted.
As it will be easily appreciated by one skilled in the art that the above is only the preferred embodiment of the utility model only, not
To limit the utility model, any modification made within the spirit and principle of the present invention, equivalent replacement and change
Into etc., it should be included within the scope of protection of this utility model.
Claims (9)
1. three-phase slotless high-speed motor, which is characterized in that including electric machine casing, rotor assembly, bearing assembly, impeller assembly and determine
Sub-component, wherein
The axis vertical of the electric machine casing is arranged comprising motor housing, motor inner casing and multiple diffusion ribs, described in these
Diffusion rib it is circumferentially distributed along the periphery of the motor inner casing and they be respectively positioned on the motor housing and motor inner casing it
Between, every diffusion rib respectively along the axially extending of the motor inner casing and connects in the motor housing and motor
Shell, the top and bottom of the motor housing are more than the motor inner casing；
The rotor assembly includes shaft and permanent magnet, and the shaft is vertically arranged and is mounted on institute by the bearing assembly
On the inner wall for stating motor inner casing, the permanent magnet is installed on the lower end of the shaft；
The impeller assembly includes metallic sheath and impeller, the fixed upper end for being installed on the shaft of the metallic sheath, the impeller
It is fixedly connected with the metallic sheath；
The stator module includes stator case, stator, insulating layer, cup type winding, backing plate, pcb board and needle stand, the stator case
The axis vertical of body is arranged, and the upper end of the stator case is fixedly mounted on the lower end of the motor inner casing, the stator by
Multiple silicon steel sheet groups to link together be coaxially disposed at, these silicon steel sheets and by laminated structure from top to bottom together,
The outer ring of each silicon steel sheet is each attached on the stator case, and the insulating layer is tubular and is arranged in the stator
Inner ring, the cup type winding is located in the insulating layer and surrounds the permanent magnet, the cup type winding and pcb board electricity
Connection, the needle stand are arranged on the pcb board, and backing plate is arranged between the stator case and the pcb board.
2. three-phase slotless high-speed motor according to claim 1, which is characterized in that the permanent magnet is the two poles of the earth annular permanent magnet
Body.
3. three-phase slotless high-speed motor according to claim 1, which is characterized in that the metallic sheath uses aluminium alloy or copper
Alloy is made.
4. three-phase slotless high-speed motor according to claim 1, which is characterized in that the impeller for plastic parts and with institute
State the integrated molding of metallic sheath integral molded plastic.
5. three-phase slotless high-speed motor according to claim 1, which is characterized in that the shaft is corresponding to the metal
The position of set carries out annular knurl processing, and is additionally provided with binder at the position of annular knurl processing.
6. three-phase slotless high-speed motor according to claim 1, which is characterized in that the upper end of the stator case is provided with
The lower end of annular convex platform, the motor inner casing compresses the annular convex platform by way of flange, to make the stator case and be somebody's turn to do
Motor inner casing is securely joined together.
7. three-phase slotless high-speed motor according to claim 1, which is characterized in that the stator case is close to motor inner casing
One end be provided with multiple heat release holes.
8. three-phase slotless high-speed motor according to claim 1, which is characterized in that the shaft is corresponding to the permanent magnetism
The position of body carries out annular knurl processing, and is additionally provided with binder at the position of annular knurl processing.
9. three-phase slotless high-speed motor according to claim 1, which is characterized in that the permanent magnet uses NdFeB material
It is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920233680.XU CN209472453U (en) | 2019-02-25 | 2019-02-25 | A kind of three-phase slotless high-speed motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920233680.XU CN209472453U (en) | 2019-02-25 | 2019-02-25 | A kind of three-phase slotless high-speed motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209472453U true CN209472453U (en) | 2019-10-08 |
Family
ID=68093811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920233680.XU Active CN209472453U (en) | 2019-02-25 | 2019-02-25 | A kind of three-phase slotless high-speed motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209472453U (en) |
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2019
- 2019-02-25 CN CN201920233680.XU patent/CN209472453U/en active Active
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