CN112583201A

CN112583201A - Power assembly and fan

Info

Publication number: CN112583201A
Application number: CN202011391180.2A
Authority: CN
Inventors: 江记凯; 闫甜甜; 李萍; 胡义明
Original assignee: Midea Welling Motor Technology Shanghai Co Ltd; Welling Wuhu Motor Manufacturing Co Ltd
Current assignee: Midea Welling Motor Technology Shanghai Co Ltd; Welling Wuhu Motor Manufacturing Co Ltd
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2021-03-30
Anticipated expiration: 2040-12-02
Also published as: WO2022116239A1; CN112583201B

Abstract

The invention provides a power assembly and a fan, wherein the power assembly comprises a shell, a stator assembly, a rotor assembly and a rotating shaft; the stator assembly is arranged in the shell; the rotor assembly is positioned on one side of the stator assembly in the axial direction so as to form an axial air gap between the rotor assembly and the stator assembly; the first end of the rotating shaft is connected with the rotor assembly, and the second end of the rotating shaft penetrates through the stator assembly and extends to the outside of the shell; the power assembly further comprises a bearing, the bearing is sleeved on the rotating shaft, located between the rotor assembly and the second end of the rotating shaft and connected with the shell. The rotor subassembly sets up in stator module axial one side in the pivot for power component's magnetic flux direction is the axial, under the condition of same output and same efficiency, makes power component's axial length shorter, and then makes the motor change to accomplish the flattening and miniaturize, reduces power component and to the occuping of space in the axial, promotes power component's quality.

Description

Power assembly and fan

Technical Field

The invention relates to the technical field of motors, in particular to a power assembly and a fan.

Background

At present, a motor of an outdoor unit of an air conditioner generally drives a load fan to rotate through a motor, so that high-pressure high-temperature gas discharged from an indoor unit is cooled and radiated by a fan of the outdoor unit.

In the related art, in order to improve the energy efficiency of the air conditioner, a direct current motor with higher efficiency is generally adopted, but because the direct current motor is a radial flux motor, the size is larger, and the requirement for motor miniaturization cannot be met.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art or the related art.

To this end, a first aspect of the invention proposes a power assembly.

A second aspect of the invention provides a wind turbine.

In view of the above, a first aspect of the present invention provides a power assembly, including a housing, a stator assembly, a rotor assembly, and a rotating shaft; the stator assembly is arranged in the shell; the rotor assembly is positioned on one side of the stator assembly in the axial direction so as to form an axial air gap between the rotor assembly and the stator assembly; the first end of the rotating shaft is connected with the rotor assembly, and the second end of the rotating shaft penetrates through the stator assembly and extends to the outside of the shell.

According to the power assembly provided by the invention, the stator assembly and the rotor assembly are arranged in the shell, and the stator assembly is matched with the rotor assembly so as to drive the rotating shaft to rotate, so that the power output is realized.

The rotor subassembly sets up in stator module axial one side in the pivot for power component's magnetic flux direction is the axial, under the condition of same output and same efficiency, makes power component's axial length shorter, and then makes the motor change to accomplish the flattening and miniaturize, reduces power component and to the occuping of space in the axial, promotes power component's quality.

The first end of the rotating shaft is connected with the rotor assembly and is positioned on one side of the stator assembly in the axial direction, the second end of the rotating shaft penetrates through the stator assembly and extends to the outside of the shell, and the second end of the rotating shaft can be connected with a load. When the power assembly drives the load to rotate, the power of the rotating shaft comes from the first end of the rotating shaft, and the resistance received by the rotating shaft is located at the second end of the rotating shaft, so that the stress of the rotating shaft is more balanced, and the power assembly is more stable in the rotating process of the rotating shaft.

Because the stress of the rotating shaft is more balanced, the friction resistance borne by the rotating shaft in the rotating process can be reduced, the abrasion of the rotating shaft is further reduced, and the service life of the power assembly is prolonged. And because the friction resistance that the pivot received in the rotation process reduces, and then reduces the loss of power component for power component has higher work efficiency. The friction resistance received in the rotating process of the rotating shaft is reduced, the jumping of the rotating shaft can be reduced, and the noise of the power assembly during working is further reduced.

Because power component is more stable at the pivot pivoted in-process, can reduce power component's vibration, further reduce the noise of power component during operation, promote power component's quality.

The power assembly further comprises a bearing, the bearing is sleeved on the rotating shaft, located between the rotor assembly and the second end of the rotating shaft and connected with the shell.

The bearing sleeve is arranged on the rotating shaft to realize the support of the rotating shaft. Because the bearing is located between the first end of pivot and the second end of pivot to the power of pivot comes from the first end of pivot, and the resistance that the pivot was received is located the second end of pivot, makes the support position of pivot be located between power and the resistance, further promotes the homogeneity of pivot atress, and then makes power component more stable at pivot pivoted in-process. Because the bearing is connected with the shell, the bearing is arranged in the radial inner part of the shell, the height of the motor can be effectively reduced, and the number of parts can be reduced.

The bearing is at least one, and the bearing type is any one or combination of a deep groove ball bearing, an angular contact bearing, a sliding bearing and a self-aligning bearing.

The quantity of bearing is a plurality of, because a plurality of bearings support the pivot simultaneously for the pivot atress is more even, further reduces the runout of pivot, promotes power component's stability.

The rotating shaft is simultaneously supported by the bearings, and the axial positioning of the rotating shaft can be realized, so that the difference of the relative positions of the rotor and the stator is smaller, the matching precision is higher, the torque of the power assembly is further improved, and the power assembly has better performance.

The number of bearings is two.

In addition, the power assembly in the above technical solution provided by the present invention may further have the following additional technical features:

in one technical scheme of the invention, the shell is a plastic part and is coated on the outer side of the stator assembly.

In this technical scheme, the casing is the working of plastics to the cladding is in stator module's the outside, and the realization is fixed the installation of stator module, and the assembly process of motor is simplified, and then reduces power component's the degree of difficulty, promotes power component's assembly efficiency.

Because the casing is the working of plastics, can be with stator module pre-buried in the mould, and then once injection moulding for the direct cladding of shell is in stator module's outside, further simplifies the assembly process of motor, and then reduces power component's the degree of difficulty, promotes power component's assembly efficiency.

In one technical scheme of the invention, the shell is provided with a cavity which is through along the axial direction, and the bearing is arranged in the cavity.

In the technical scheme, the bearing is arranged at the radial inner part of the shell, so that the height of the motor can be further reduced, and the number of parts can be reduced.

In one technical scheme of the invention, the power assembly further comprises a bearing seat; the bearing seat is annular and is embedded in the cavity; the bearing is embedded in the bearing seat.

In this technical scheme, inlay the bearing frame in the casing, can realize the support to the bearing to reduce the quantity of motor spare part, reduce the preparation assembly process, a plurality of bearings set up in the internal portion of plastic-coated, the axial height of whole motor of effectual reduction moreover.

In one technical scheme of the invention, the shell is provided with a bearing chamber, the bearing chamber is positioned in the cavity, and the bearing is embedded in the bearing chamber.

In the technical scheme, the stator assembly is embedded in the mold, and when the stator assembly is subjected to one-time injection molding, a bearing chamber can be formed in the radial inner part of the shell, and the bearing chamber does not need to be machined through machinery subsequently.

In one embodiment of the present invention, the power assembly further includes a bearing cover, and the bearing cover is connected to the housing and contacts with a bearing of the bearing far away from the first end of the rotating shaft.

In this technical scheme, power component still includes the bearing cap, and the bearing cap is fixed in on the casing to support with keeping away from the bearing of pivot first end in the bearing and leaning on, support with the bearing in the outside promptly and lean on, realized the location to the bearing, ensure the cooperation precision between rotor subassembly and the stator module.

And because the bearing cap is leaned against the bearing at the outermost side, the bearing cap can prevent external dust and impurities from entering the bearing seat, so that the bearing seat is cleaner, and the bearing can flexibly rotate in the bearing seat.

In one aspect of the present invention, a rotor assembly includes a support member and a plurality of magnetic members; the supporting component is sleeved on the rotating shaft; the plurality of magnetic members are arranged along the circumferential direction of the support member and are attached to at least one of the plurality of end surfaces of the support member in the axial direction.

In the technical scheme, the magnetic part is attached to the supporting part, so that the number of parts is reduced under the condition of ensuring the performance of the power assembly with the function of the rotor, the structure of the rotor is simplified, the processing and assembly of the rotor are simpler and more convenient, the processing cost and the part cost of the rotor are reduced, and the cost of the rotor is further lower.

And because a plurality of magnetic parts set up along the circumference of support component, laminate with at least one terminal surface in a plurality of terminal surfaces of support component in the axial, and then make when assembling the magnetic part, can use standard frock to fix a position the magnetic part, need not to process out location structure on the support component and fix a position the magnetic part, simplified the processing technology of support component, further reduced the processing degree of difficulty and the processing cost of rotor.

The magnetic pieces are permanent magnets, and N poles and S poles of two adjacent permanent magnets are alternately arranged, or two adjacent permanent magnets are arranged in a Halbach array.

The plurality of magnetic members are disposed on the same end surface of the support member and arranged in the circumferential direction of the support member. The N poles and the S poles of the two adjacent magnetic pieces are alternately arranged, or the two adjacent magnetic pieces are arranged in a Halbach array.

The magnetic parts are arranged on the end surfaces of two sides of the supporting component, and the magnetic parts on the same end surface are arranged along the circumferential direction of the supporting component. N poles and S poles of two adjacent magnetic pieces on the same end face are alternately arranged, or the two adjacent magnetic pieces are arranged in a Halbach array. The magnetic parts on the two end surfaces are symmetrically arranged relative to the supporting part.

The supporting part is in a disc shape, so that the structure of the supporting part is simple and the shape of the supporting part is regular.

In one aspect of the present invention, the plurality of magnetic members are bonded to the support member.

In the technical scheme, the plurality of magnetic parts and the supporting component are bonded through the adhesive, so that the plurality of magnetic parts and the supporting component are not required to be connected through a complex connecting structure, the structure of the rotor is further simplified, the assembling difficulty of the rotor is reduced, the assembling process of the power assembly is further simplified, and the assembling cost of the power assembly is reduced.

And because a plurality of magnetic parts and supporting component pass through the adhesive bonding, be useless between magnetic part and the stator and be used for connecting the connecting piece of fixed magnetic part, and then reduce the air gap between the lateral wall of magnetic part and the stator, promote power component's performance.

In one aspect of the present invention, the magnetic member is circular or fan-shaped.

In this technical scheme, the magnetic part can be circular, and the circular magnetic part can reduce the occupation to the space on the supporting part. The magnetic parts can be fan-shaped, and the fan-shaped magnetic parts can improve the arrangement compactness of the magnetic parts, so that the magnetic field distribution is more uniform.

The magnetic part is shaped like a cake.

In one embodiment of the present invention, the support member is a metal member that is magnetically permeable.

In this technical scheme, because the supporting component is the metalwork that can lead magnetism for the supporting component possesses magnetic conductivity, makes the magnetic field distribution of magnetic part more even, and then promotes power component's work efficiency.

The material of the supporting part is silicon steel or carbon steel material.

In one embodiment of the present invention, the rotor assembly further includes a shaft sleeve, and the shaft sleeve is connected to the supporting member and sleeved on the rotating shaft.

In this technical scheme, the supporting component is connected with the pivot through the axle sleeve, promotes the joint strength between supporting component and the pivot, and then promotes the stability of supporting component in the rotation process.

In one aspect of the present invention, a bushing includes a connecting portion and a mounting portion; the connecting part is in a disc shape and is attached to the supporting part; the installation part is tubular, is sleeved on the rotating shaft and is connected with the connecting part.

The installation department can cooperate with power component's pivot, and then makes the pivot rotate under the drive of supporting component, realizes the output of power.

And the installation department is the tubulose to along the axial setting, increased the area of contact of supporting component with the pivot, increased the frictional force between supporting component and the pivot, and then make the supporting component can drive the pivot more stably and rotate, further promote the stability when the pivot rotates.

Connecting portion are the disk for supporting part and installation department are located the same position, or cladding piece and installation department are located the same position, and then shorten the ascending length of rotor axial, make power component's axial dimensions compacter, promote power component axial space's utilization ratio.

And owing to shortened rotor length in the axial for power component is miniaturized in the axial, and then the whole miniaturization of power component of being convenient for promotes power component's application range, increases power component's practicality.

In one aspect of the present invention, the connecting portion is provided to be inclined from the inner ring to the outer ring.

In this technical scheme, because connecting portion are by the inner circle slope setting of connecting portion to the outer lane slope of connecting portion, connecting portion are by the installation department to the support component slope setting promptly for connecting portion are certain angle with the support component, and then promote the intensity of support component, further promote power component's stability.

And because connecting portion set up by the installation department to the support component slope for the inside of connecting portion has certain space, can overlap the outside of locating structures such as bearing or end cover, and then promotes the ascending compactness of power component in the axial, the axial length of the power component who shortens, promotes the utilization ratio of power component axial space.

Because the length of the rotor in the axial direction is shortened, the length of the rotating shaft can be shortened, the rigidity of the rotating shaft is further improved, the radial runout of the rotating shaft is reduced, and the stability of the power assembly is further improved.

In one technical scheme of the invention, the connecting part is provided with a process hole, and the process hole penetrates through the connecting part along the axial direction of the supporting part.

In one aspect of the present invention, the rotor assembly further includes a fastening member, and the fastening member is connected to the support member after passing through the connection portion.

In the technical scheme, the connecting part is connected with the supporting part through the fastening part, so that the connecting part and the supporting part can be ensured to rotate synchronously.

The fasteners are screws, rivets or pins.

The shaft sleeve is in interference fit with the rotating shaft.

The shaft sleeve is connected with the rotating shaft through screws, rivets or pins.

The shaft sleeve and the supporting component can also be of an integrated structure.

In one technical scheme of the invention, the stator assembly comprises a stator core and a stator winding; the stator core comprises a plurality of stator teeth; the stator winding comprises a plurality of groups of coils which are respectively wound on a plurality of stator teeth.

In the technical scheme, a plurality of groups of coils are wound on a plurality of stator teeth respectively, each stator tooth is wound with one group of coils, and after the coils are electrified, a magnetic field is generated, so that the rotor assembly can be driven to rotate.

The axial setting of stator tooth along the pivot, the coil radially encircles in the pivot, and then cooperatees with the rotor subassembly that sets up in stator module axial one side in the pivot, make power component's magnetic flux direction be the axial, under the condition of same output and same efficiency, make power component's axial length shorter, and then make the motor change accomplish the flattening and miniaturize, reduce power component and to the occuping of space in the axial, promote power component's quality.

The number of the stator teeth is at least 3 and is integral multiple of 3, and the material type is silicon steel sheet.

In one technical scheme of the invention, the stator assembly comprises a plurality of insulating frameworks, the insulating frameworks are respectively sleeved on the plurality of stator teeth, and the plurality of groups of coils are respectively wound on the insulating frameworks.

In the technical scheme, the insulating arm support is sleeved on the stator teeth, the winding is wound on the insulating arm support, and then the stator teeth and the winding are spaced apart from each other, so that the insulation between the winding and the stator teeth is realized, and the power assembly is prevented from electric leakage.

In one aspect of the present invention, the stator assembly includes a stator yoke, and the stator yoke is connected to the stator core and located on one side of the stator core in the axial direction.

In the technical scheme, the winding is fixed on the stator teeth through the stator yoke, and the winding is prevented from falling off due to vibration of the power assembly.

The stator tooth includes body, first joint portion and second joint portion, and first joint portion and second joint portion are located the both sides of body respectively, and the axial setting of pivot is followed to the body, on winding and the body.

When the winding twined on the body, the winding was matched with first joint portion in the ascending one side of axial, and the stator yoke is cyclic annular, and the joint cooperatees with the winding opposite side in the ascending axial in second joint portion, and then stator yoke and first joint portion are fixed in the winding on the body.

In one embodiment of the present invention, the power assembly further includes a protective cover, and the protective cover is fastened to the outside of the rotor assembly and connected to the housing.

In this technical scheme, the safety cover lock is in the outside of rotor subassembly to be connected with the casing, realize the sealed to the casing, reduce the dust and the impurity that enter into the casing inside.

According to a second aspect of the present invention, there is provided a fan including the power assembly according to any one of the above technical solutions, so that the fan has all the advantages of the power assembly according to any one of the above technical solutions.

The power component is a motor.

In one technical scheme of the invention, the fan further comprises a fan blade, and the fan blade is sleeved at the second end of the rotating shaft.

In this technical scheme, the first end of pivot is connected with the rotor subassembly to be located stator module one side in the axial, the second end of pivot is located to the fan blade cover, and when power component drive fan blade rotated, the power of pivot came from the first end of pivot, and the resistance that the pivot was received is located the second end of pivot, and then makes the pivot atress more balanced, makes power component more stable at pivot pivoted in-process.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 shows a schematic structural diagram of a power assembly according to an embodiment of the invention;

FIG. 2 shows a schematic structural diagram of a power assembly according to another embodiment of the invention;

FIG. 3 illustrates an exploded view of a power assembly according to one embodiment of the present invention;

FIG. 4 illustrates a structural schematic of a stator assembly according to one embodiment of the present invention;

FIG. 5 illustrates a structural schematic view of a stator assembly according to another embodiment of the present invention;

FIG. 6 illustrates a schematic structural view of a rotor assembly and a rotating shaft according to an embodiment of the present invention;

FIG. 7 illustrates a schematic structural view of a rotor assembly and a rotating shaft according to another embodiment of the present invention;

FIG. 8 illustrates a schematic structural view of a rotor assembly according to an embodiment of the present invention;

FIG. 9 illustrates a schematic structural view of a rotor assembly according to another embodiment of the present invention;

fig. 10 shows a schematic structural view of a stator core according to an embodiment of the present invention;

FIG. 11 illustrates a schematic structural diagram of a wind turbine according to one embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 11 is:

100 casing, 200 stator module, 210 stator core, 212 stator tooth, 2122 body, 2124 first joint portion, 2126 second joint portion, 220 stator winding, 230 insulating skeleton, 240 stator yoke, 300 rotor subassembly, 310 supporting component, 320 magnetic part, 330 axle sleeve, 332 connecting portion, 334 installation portion, 340 fastener, 400 pivot, 500 bearing, 600 bearing frame, 700 bearing cap, 800 safety cover, 910 power component, 920 fan blade.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

A power module 910 and a fan according to some embodiments of the invention are described below with reference to fig. 1-11.

The first embodiment is as follows:

as shown in fig. 1 and 2, the present invention provides a power assembly 910, which includes a housing 100, a stator assembly 200, a rotor assembly 300, and a rotating shaft 400; the stator assembly 200 is disposed in the casing 100; the rotor assembly 300 is positioned at one side of the stator assembly 200 in the axial direction to form an axial air gap between the rotor assembly 300 and the stator assembly 200; the rotating shaft 400 has a first end connected to the rotor assembly 300 and a second end passing through the stator assembly 200 and extending to the outside of the casing 100.

As shown in fig. 3, in the power assembly 910 provided by the present invention, the housing 100 is provided with the stator assembly 200 and the rotor assembly 300, and the stator assembly 200 is matched with the rotor assembly 300 to drive the rotating shaft 400 to rotate, so as to output power.

The rotor assembly 300 is arranged on one side of the stator assembly 200 in the axial direction of the rotating shaft 400, so that the magnetic flux direction of the power assembly 910 is in the axial direction, and under the condition of the same output power and the same efficiency, the axial length of the power assembly 910 is shorter, and further the motor is more easily flattened and miniaturized, the space occupation of the power assembly 910 in the axial direction is reduced, and the quality of the power assembly 910 is improved.

As shown in fig. 1 and 2, a first end of the rotation shaft 400 is connected to the rotor assembly 300 and is positioned at one side of the stator assembly 200 in the axial direction, a second end of the rotation shaft 400 passes through the stator assembly 200 and extends to the outside of the casing 100, and the second end of the rotation shaft 400 can be connected to a load. When the power assembly 910 drives the load to rotate, the power of the rotating shaft 400 is from the first end of the rotating shaft 400, and the resistance received by the rotating shaft 400 is located at the second end of the rotating shaft 400, so that the stress on the rotating shaft 400 is more balanced, and the power assembly 910 is more stable in the rotating process of the rotating shaft 400.

Because the stress of the rotating shaft 400 is more balanced, the frictional resistance applied to the rotating shaft 400 during the rotation process can be reduced, so that the abrasion of the rotating shaft 400 is reduced, and the service life of the power assembly 910 is prolonged. And because the friction resistance suffered by the rotating shaft 400 in the rotating process is reduced, the loss of the power assembly is further reduced, and the power assembly 910 has higher working efficiency. The friction resistance applied to the rotating shaft 400 during the rotation process is reduced, and the bounce of the rotating shaft 400 is also reduced, so that the noise generated during the operation of the power assembly 910 is reduced.

Because the power assembly 910 is more stable in the rotation process of the rotating shaft 400, the vibration of the power assembly 910 can be reduced, the noise generated when the power assembly 910 works can be further reduced, and the quality of the power assembly 910 can be improved.

As shown in fig. 1 and 2, the power assembly 910 further includes a bearing 500, and the bearing 500 is sleeved on the rotating shaft 400, located between the rotor assembly 300 and the second end of the rotating shaft 400, and connected to the housing 100.

The bearing 500 is sleeved on the rotating shaft 400 to support the rotating shaft 400. Because the bearing 500 is located between the first end of the rotating shaft 400 and the second end of the rotating shaft 400, and the power of the rotating shaft 400 is from the first end of the rotating shaft 400, the resistance received by the rotating shaft 400 is located at the second end of the rotating shaft 400, so that the supporting position of the rotating shaft 400 is located between the power and the resistance, the uniformity of the stress of the rotating shaft 400 is further improved, and the power assembly 910 is more stable in the rotating process of the rotating shaft 400. Since the bearing 500 is connected to the housing 100, the bearing 500 is disposed in the radial direction of the housing 100, which can effectively reduce the height of the motor and the number of components.

The bearing 500 is at least one, and the type of the bearing 500 is any one or a combination of a deep groove ball bearing 500, an angular contact bearing 500, a sliding bearing 500, and a self-aligning bearing 500.

As shown in fig. 1 and 2, the number of the bearings 500 is multiple, and since the plurality of bearings 500 simultaneously support the rotating shaft 400, the force applied to the rotating shaft 400 is more uniform, the radial run-out of the rotating shaft 400 is further reduced, and the stability of the power assembly 910 is improved.

The bearings 500 support the rotating shaft 400 at the same time, and can also realize axial positioning of the rotating shaft 400, so that the difference of the relative positions of the rotor and the stator is smaller, the matching precision is higher, the torque of the power assembly 910 is further improved, and the power assembly 910 has better performance.

The number of bearings 500 is two.

Example two:

the present embodiment provides a power assembly 910, and in addition to the technical features of the above embodiments, the present embodiment further includes the following technical features.

As shown in fig. 4 and 5, the casing 100 is a plastic member, and the casing 100 is wrapped outside the stator assembly 200.

In this embodiment, the housing 100 is a plastic part and covers the outer side of the stator assembly 200, so that the assembly process of the motor is simplified while the stator assembly 200 is fixed, the difficulty of the power assembly 910 is reduced, and the assembly efficiency of the power assembly 910 is improved.

Because casing 100 is the working of plastics, can be with stator module 200 pre-buried in the mould, and then once injection moulding for the direct cladding of shell is in stator module 200's outside, further simplifies the assembly process of motor, and then reduces power component 910's the degree of difficulty, promotes power component 910's assembly efficiency.

Example three:

The housing 100 is provided with a cavity penetrating in the axial direction, and the bearing 500 is disposed in the cavity.

In this embodiment, the bearing 500 is disposed radially inside the housing 100, which can further reduce the height of the motor and the number of components.

As shown in fig. 1 and 4, the housing 100 is provided with a cavity penetrating in the axial direction, and the power assembly 910 further includes a bearing seat 600; the bearing seat 600 is annular and embedded in the cavity; the bearing 500 is embedded in the bearing housing 600.

In this embodiment, the bearing seat 600 is embedded in the housing 100, so that the bearing 500 can be supported, the number of motor parts is reduced, the manufacturing and assembling processes are reduced, and the plurality of bearings 500 are arranged inside the plastic-coated body, so that the axial height of the whole motor can be effectively reduced.

The bearing seat is a metal bearing seat. Example four:

The shell (100) is provided with a bearing chamber, the bearing chamber is positioned in the cavity, and the bearing (500) is embedded in the bearing chamber.

In this embodiment, when the stator assembly 200 is pre-embedded in the mold and injection molded at one time, the bearing chamber may be formed in the radial inner portion of the housing 100 without machining the bearing chamber later.

Example five:

As shown in fig. 1 and 2, the power assembly 910 further includes a bearing cover 700, and the bearing cover 700 is connected to the housing 100 and contacts the bearing 500 at a first end of the bearing 500 away from the rotating shaft 400.

In this embodiment, the power assembly 910 further includes a bearing cover 700, and the bearing cover 700 is fixed on the housing 100 and abuts against the bearing 500 far from the first end of the rotating shaft 400 in the bearing 500, that is, abuts against the outermost bearing 500, so that the bearing 500 is positioned, and the matching precision between the rotor assembly 300 and the stator assembly 200 is ensured.

And because the bearing cover 700 is abutted against the outermost bearing 500, external dust and impurities can be prevented from entering the bearing seat 600, so that the bearing seat 600 is cleaner, and the bearing 500 can flexibly rotate in the bearing seat 600.

Example six:

As shown in fig. 6 and 7, the rotor assembly 300 includes a support member 310 and a plurality of magnetic members 320; the supporting member 310 is sleeved on the rotating shaft 400; the plurality of magnetic members 320 are disposed along the circumferential direction of the support member 310, and are in contact with at least one of the plurality of end surfaces of the support member 310 in the axial direction.

In this embodiment, the magnetic member 320 is attached to the supporting member 310, so that the number of parts is reduced, the structure of the rotor is simplified, the processing and assembly of the rotor are simplified, the processing cost and the part cost of the rotor are reduced, and the cost of the rotor is reduced while the performance of the power assembly 910 ensuring the function of the rotor is ensured.

And because a plurality of magnetic pieces 320 are arranged along the circumference of the supporting component 310 and are attached to at least one end face of a plurality of end faces of the supporting component 310 in the axial direction, when the magnetic pieces 320 are assembled, standard tools can be used for positioning the magnetic pieces 320, a positioning structure does not need to be processed on the supporting component 310 to position the magnetic pieces 320, the processing technology of the supporting component 310 is simplified, and the processing difficulty and the processing cost of the rotor are further reduced.

As shown in fig. 8 and 9, the magnetic member 320 is a permanent magnet, and the N pole and the S pole of two adjacent permanent magnets are alternately arranged, or two adjacent permanent magnets are arranged in a halbach array.

The plurality of magnetic members 320 are disposed on the same end surface of the support member 310 and arranged in the circumferential direction of the support member 310. The N-pole and S-pole of two adjacent magnetic members 320 are alternately arranged, or two adjacent magnetic members 320 are arranged in a halbach array.

The plurality of magnetic members 320 are disposed on end surfaces of both sides of the support member 310, and the magnetic members 320 on the same end surface are arranged in the circumferential direction of the support member 310. The N poles and S poles of two adjacent magnetic members 320 on the same end face are alternately arranged, or two adjacent magnetic members 320 are arranged in a halbach array. The magnetic members 320 on both end surfaces are symmetrically disposed with respect to the support member 310.

The support member 310 has a disk shape, so that the support member 310 has a simple structure and a regular shape.

Example seven:

As shown in fig. 8 and 9, a plurality of magnetic members 320 are adhered to the support member 310.

In this embodiment, the plurality of magnetic members 320 and the supporting member 310 are bonded by the adhesive, so that the plurality of magnetic members 320 and the supporting member 310 do not need to be connected by a complicated connecting structure, the structure of the rotor is further simplified, the assembly difficulty of the rotor is reduced, the assembly process of the power assembly 910 is further simplified, and the assembly cost of the power assembly 910 is reduced.

And because the plurality of magnetic elements 320 and the supporting component 310 are bonded through the adhesive, no connecting piece for connecting and fixing the magnetic elements 320 is arranged between the magnetic elements 320 and the stator, so that the air gap between the side wall of the magnetic element 320 and the stator is reduced, and the performance of the power assembly 910 is improved.

Example eight:

The magnetic member 320 has a circular or fan shape.

As shown in fig. 6 and 7, in this embodiment, the magnetic member 320 may have a circular shape, and the circular magnetic member 320 may reduce the occupation of the space on the support member 310. The magnetic elements 320 may be fan-shaped, and the fan-shaped magnetic elements 320 may improve the compactness of the arrangement of the magnetic elements 320, so that the magnetic field distribution is more uniform.

The magnetic member 320 has a pie shape.

Example nine:

The support member 310 is a metal member that is magnetically permeable.

In this embodiment, since the supporting member 310 is a metal member capable of conducting magnetic, the supporting member 310 has a magnetic conducting capability, so that the magnetic field distribution of the magnetic member 320 is more uniform, and the working efficiency of the power assembly 910 is further improved.

The material of the support member 310 is silicon steel or carbon steel.

Example ten:

As shown in fig. 6 and 8, the rotor assembly 300 further includes a sleeve 330, and the sleeve 330 is connected to the supporting member 310 and sleeved on the rotating shaft 400.

In this embodiment, the supporting member 310 is connected to the rotating shaft 400 through the bushing 330, so as to improve the connection strength between the supporting member 310 and the rotating shaft 400, and further improve the stability of the supporting member 310 during the rotation process.

Example eleven:

As shown in fig. 6 and 8, the boss 330 includes a connecting portion 332 and a mounting portion 334; the connecting portion 332 is shaped like a disk and is attached to the supporting member 310; the mounting portion 334 is tubular and is sleeved on the rotating shaft 400 and connected to the connecting portion 332.

The mounting portion 334 is capable of being engaged with the rotating shaft 400 of the power assembly 910, so that the rotating shaft 400 can be driven by the supporting member 310 to rotate, thereby outputting power.

The mounting portion 334 is tubular and axially disposed, so that a contact area between the supporting member 310 and the rotating shaft 400 is increased, a friction force between the supporting member 310 and the rotating shaft 400 is increased, the supporting member 310 can more stably drive the rotating shaft 400 to rotate, and the stability of the rotating shaft 400 during rotation is further improved.

The connecting portion 332 is disc-shaped, so that the supporting portion and the mounting portion 334 are located at the same position, or the cladding member and the mounting portion 334 are located at the same position, and further the axial length of the rotor is shortened, so that the axial size of the power assembly 910 is more compact, and the utilization rate of the axial space of the power assembly 910 is improved.

And because the length of the rotor in the axial direction is shortened, the power assembly 910 is miniaturized in the axial direction, so that the whole power assembly 910 is conveniently miniaturized, the application range of the power assembly 910 is enlarged, and the practicability of the power assembly 910 is increased.

Example twelve:

The connecting portion 332 is inclined from the inner ring to the outer ring.

In this embodiment, since the connecting portion 332 is disposed from the inner ring of the connecting portion 332 to the outer ring of the connecting portion 332 in an inclined manner, that is, the connecting portion 332 is disposed from the mounting portion 334 to the supporting member 310 in an inclined manner, the connecting portion 332 and the supporting member 310 form a certain angle, so as to enhance the strength of the supporting member 310 and further enhance the stability of the power assembly 910.

Moreover, since the connecting portion 332 is inclined from the mounting portion 334 to the supporting member 310, a certain space is provided inside the connecting portion 332, and the connecting portion can be sleeved outside the bearing 500 or the end cover, so as to improve the axial compactness of the power assembly 910, shorten the axial length of the power assembly 910, and improve the utilization rate of the axial space of the power assembly 910.

Because the length of the rotor in the axial direction is shortened, the length of the rotating shaft 400 can be shortened, the rigidity of the rotating shaft 400 is improved, the radial runout of the rotating shaft 400 is reduced, and the stability of the power assembly 910 is further improved.

Example thirteen:

The connecting portion 332 is provided with a process hole, and the process hole penetrates through the connecting portion 332 in the axial direction of the support member 310.

Example fourteen:

As shown in fig. 6 and 8, the rotor assembly 300 further includes a fastening member 340, and the fastening member 340 is connected to the support member 310 after passing through the connection portion 332.

In this embodiment, the connecting portion 332 is connected to the supporting member 310 by a fastener 340, ensuring that the connecting portion 332 and the supporting member 310 rotate synchronously.

The fasteners 340 are screws, rivets or pins.

Specifically, when the fastening member 340 is a screw, a through hole is formed in the connecting portion 332, a threaded hole is formed in the supporting member 310, and the screw is screwed into the threaded hole formed in the supporting member 310 after passing through the through hole formed in the connecting portion 332, so as to fix the connecting portion 332 and the supporting member 310.

Specifically, when the fastening member 340 is a rivet, the connecting portion 332 and the support member 310 are both provided with through holes, and the rivet passes through the through holes provided in the connecting portion 332 and the support member 310 to fix the connecting portion 332 and the support member 310.

The shaft sleeve 330 is in interference fit with the rotating shaft 400.

The sleeve 330 is coupled to the shaft 400 by means of screws, rivets or pins.

Specifically, the shaft sleeve 330 is provided with a threaded hole, and a screw is screwed into the threaded hole provided in the shaft sleeve 330 and abuts against the rotating shaft 400.

The shaft sleeve 330 is provided with a pin hole, the rotating shaft is provided with a pin hole along the radial direction, and the pin is simultaneously arranged in the pin holes on the shaft sleeve 330 and the rotating shaft 400 in a penetrating way.

The sleeve 330 may also be of unitary construction with the support member 310.

Example fifteen:

As shown in fig. 4 and 5, the stator assembly 200 includes a stator core 210 and a stator winding 220; as shown in fig. 10, the stator core 210 includes a plurality of stator teeth 212; the stator winding 220 includes a plurality of sets of coils wound around the plurality of stator teeth 212, respectively.

In this embodiment, a plurality of coils are wound around a plurality of stator teeth 212, and each stator tooth 212 is wound with one coil, and when the coils are energized, a magnetic field is generated, thereby driving the rotor assembly 300 to rotate.

Stator tooth 212 sets up along the axial of pivot 400, the coil encircles in the footpath of pivot 400, and then cooperatees with the rotor subassembly 300 that sets up in stator module 200 at axial one side of pivot 400, make power component 910's magnetic flux direction be the axial, under the condition of same output and same efficiency, make power component 910's axial length shorter, and then make the motor accomplish the flattening and miniaturize more easily, reduce power component 910 and to the occupation of space in the axial, promote power component 910's quality.

The number of the stator teeth 212 is at least 3 and is integral multiple of 3, and the material type is silicon steel sheet.

Example sixteen:

As shown in fig. 4 and 5, the stator assembly 200 includes a plurality of insulating frames 230, the insulating frames 230 are respectively sleeved on the stator teeth 212, and the plurality of groups of coils are respectively wound on the insulating frames 230.

In this embodiment, the insulating arm support is sleeved on the stator teeth 212, and the winding is wound on the insulating arm support, so that the stator teeth 212 are spaced from the winding, thereby realizing insulation between the winding and the stator teeth 212 and preventing the power assembly 910 from electric leakage.

Example seventeen:

As shown in fig. 4 and 5, the stator assembly 200 includes a stator yoke 240, and the stator yoke 240 is connected to the stator core 210 at one side of the stator core 210 in the axial direction.

In this embodiment, the windings are secured to stator teeth 212 by stator yoke 240 to prevent the windings from falling out due to vibration of power assembly 910.

The stator teeth 212 include a body 2122, a first clamping portion 2124 and a second clamping portion 2126, the first clamping portion 2124 and the second clamping portion 2126 are respectively located at two sides of the body 2122, the body 2122 is arranged along the axial direction of the rotating shaft 400, and the winding is wound on the body 2122.

When the winding is wound on the body 2122, one axial side of the winding is engaged with the first engaging portion 2124, the stator yoke 240 is in a ring shape and engaged with the second engaging portion 2126 and the other axial side of the winding, and the stator yoke 240 and the first engaging portion 2124 fix the winding on the body 2122.

Example eighteen:

As shown in fig. 1 and 2, the power assembly 910 further includes a protective cover 800, and the protective cover 800 is fastened to the outside of the rotor assembly 300 and connected to the housing 100.

In this embodiment, the protection cover 800 is fastened to the outside of the rotor assembly 300 and connected to the housing 100, so as to seal the housing 100 and reduce dust and impurities entering the housing 100.

Example nineteenth:

as shown in fig. 11, the present invention provides a fan including the power assembly 910 according to any of the above embodiments, so that the fan has all the advantages of the power assembly 910 according to any of the above embodiments.

The power assembly 910 is an electric motor.

Example twenty:

as shown in fig. 11, the present embodiment provides a fan, and in addition to the technical features of the above embodiments, the present embodiment further includes the following technical features.

The fan further includes a fan blade 920, and the fan blade 920 is sleeved at the second end of the rotating shaft 400.

In this embodiment, the first end of the rotating shaft 400 is connected to the rotor assembly 300 and located at one side of the stator assembly 200 in the axial direction, the fan blade 920 is sleeved at the second end of the rotating shaft 400, when the power assembly 910 drives the fan blade 920 to rotate, the power of the rotating shaft 400 comes from the first end of the rotating shaft 400, and the resistance received by the rotating shaft 400 is located at the second end of the rotating shaft 400, so that the stress on the rotating shaft 400 is more balanced, and the power assembly 910 is more stable in the rotating process of the rotating shaft 400.

In the claims, the specification and the drawings of the specification of the present invention, the term "plurality" means two or more, unless explicitly defined otherwise, the terms "upper", "lower", and the like indicate orientations or positional relationships based on those shown in the drawings only for the purpose of describing the present invention more conveniently and simplifying the description, and do not indicate or imply that the referred device or element must have the described specific orientation, be constructed and operated in the specific orientation, and thus the description should not be construed as limiting the present invention; the terms "connect," "mount," "secure," and the like are to be construed broadly, and for example, "connect" may refer to a fixed connection between multiple objects, a removable connection between multiple objects, or an integral connection; the multiple objects may be directly connected to each other or indirectly connected to each other through an intermediate. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art from the above data specifically.

In the claims, specification, and drawings that follow the present disclosure, the description of the terms "one embodiment," "some embodiments," "specific embodiments," and so forth, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In the claims, specification and drawings of the present invention, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A power assembly, comprising:

a housing;

a stator assembly disposed within the housing;

a rotor assembly located on one side of the stator assembly in an axial direction to form an axial air gap between the rotor assembly and the stator assembly;

a first end of the rotating shaft is connected with the rotor assembly, and a second end of the rotating shaft penetrates through the stator assembly and extends to the outside of the shell;

the bearing is sleeved on the rotating shaft, is positioned between the rotor assembly and the second end of the rotating shaft, and is connected with the shell.

2. The power assembly of claim 1,

the shell is a plastic part and is wrapped on the outer side of the stator assembly.

3. The power assembly of claim 2,

the shell is provided with a cavity which is through along the axial direction, and the bearing is arranged in the cavity.

4. The power assembly of claim 3,

the power assembly further includes: the bearing seat is annular and is embedded in the cavity, and the bearing is embedded in the bearing seat; or

The shell is provided with a bearing chamber, the bearing chamber is located in the cavity, and the bearing is embedded in the bearing chamber.

5. The power assembly of claim 4, further comprising:

and the bearing cover is connected with the shell and is in contact with the bearing far away from the first end of the rotating shaft in the bearing.

6. The power assembly of claim 1, wherein the rotor assembly comprises:

the supporting component is sleeved on the rotating shaft;

and the magnetic pieces are arranged along the circumferential direction of the supporting component and are attached to at least one end face of a plurality of end faces of the supporting component in the axial direction.

7. The power assembly of claim 6, wherein the rotor assembly further comprises:

the shaft sleeve is connected with the supporting component and sleeved on the rotating shaft.

8. The power assembly of claim 7, wherein the bushing comprises:

the connecting part is in a disc shape and is attached to the supporting part;

the installation department, the installation department is the tubulose, and the cover is located in the pivot, with connecting portion are connected.

9. The power assembly of claim 8, wherein the rotor assembly further comprises:

and the fastening piece penetrates through the connecting part and then is connected with the supporting part.

10. The power assembly of claim 1, wherein the stator assembly comprises:

a stator core including a plurality of stator teeth;

and the stator winding comprises a plurality of groups of coils, and the plurality of groups of coils are respectively wound on the plurality of stator teeth.

11. The power assembly of claim 10, wherein the stator assembly comprises:

the plurality of insulation frameworks are respectively sleeved on the plurality of stator teeth, and the plurality of groups of coils are respectively wound on the plurality of insulation frameworks.

12. The power assembly of claim 10, wherein the stator assembly comprises:

and the stator yoke is connected with the stator core and is positioned on one side of the stator core in the axial direction.

13. The power assembly of any of claims 1-12, further comprising:

and the protective cover is buckled outside the rotor assembly and connected with the shell.

14. A wind turbine comprising a power assembly according to any one of claims 1 to 13.

15. The fan of claim 14, further comprising:

the fan blade is sleeved at the second end of the rotating shaft.