CN219875376U

CN219875376U - Rotor support, motor and electric equipment

Info

Publication number: CN219875376U
Application number: CN202321132698.3U
Authority: CN
Inventors: 侯唯敏; 聂鹏举
Original assignee: Collier Electric Machinery Group Co ltd
Current assignee: Collier Electric Machinery Group Co ltd
Priority date: 2023-05-11
Filing date: 2023-05-11
Publication date: 2023-10-20
Anticipated expiration: 2033-05-11

Abstract

The utility model belongs to the technical field of electromagnetism, and relates to a rotor support, a motor and electric equipment. The rotor support provided by the embodiment is characterized in that a plurality of ventilation openings which are axially communicated are formed in the chassis, a fan is fixed in the central area of the chassis, the fan and the annular disc are positioned on the same side of the chassis, when the chassis and the annular disc rotate, external air enters the area of the annular disc through the ventilation openings of the chassis and flows in an accelerating mode under the action of the fan, heat dissipation of a stator heating element is accelerated, damage to a motor device due to excessive heat accumulated in the motor is avoided, and the running reliability of the motor and the service life of the motor can be improved; the fan is fixed in the central region of chassis, need not to additionally set up the part that drives the fan and rotate, can simplify the structure of motor.

Description

Rotor support, motor and electric equipment

Technical Field

The utility model belongs to the technical field of electromagnetic devices, and particularly relates to a rotor bracket, a motor and electric equipment.

Background

The direct drive motor is a direct drive motor for short, and mainly refers to a motor which directly drives a load shaft to rotate under the condition that a transmission device (such as a transmission belt and the like) is not needed when the motor drives a load. The direct-drive motor has the advantages of silence, energy conservation, stability, strong torque and the like, so the direct-drive motor is suitable for various washing machine driving devices, electric bicycle driving devices, electric motorcycle driving devices and the like.

The direct-drive motor generally comprises a stator, a rotor and a rotor support, wherein the stator and the rotor are oppositely arranged and rotate relatively, the rotor support is used for supporting the rotor, the rotor is positioned on the periphery of the stator, and when the direct-drive motor operates, heat generated in the direct-drive motor is large. The existing rotor support is poor in heat dissipation effect, so that the inside of the motor is overheated, motor devices are damaged, and the running reliability of the motor and the service life of the motor are reduced.

Disclosure of Invention

The utility model aims to provide a rotor support, a motor and electric equipment, which are used for solving the technical problems of overheating inside the motor, damaging motor devices, reducing the running reliability of the motor and prolonging the service life of the motor caused by poor heat dissipation effect of the existing rotor support.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a rotor support, including chassis and the annular dish of arranging and interconnect along the axial, the central zone of chassis is fixed with the fan, the fan with the annular dish is located the same side of chassis, a plurality of vents of following the axial and lining up have been seted up on the chassis.

In one embodiment, the fan comprises a main body fixed on the chassis and a plurality of fan blades, wherein the main body is positioned in the central area of the chassis, and the fan blades are distributed on the outer side wall of the main body along the circumferential direction;

the fan blade comprises a first part and a second part, wherein the first part is arranged on the outer side wall of the main body, the second part extends from the first part towards the direction deviating from the center of the chassis, and the axial height of the second part is smaller than that of the first part.

In an embodiment, the fan blade further comprises a third portion, the third portion is connected to a side of the second portion facing away from the first portion, and an axial height of the third portion is greater than an axial height of the second portion.

In an embodiment, the rotor support further includes a plurality of first fan blades, the plurality of first fan blades are circumferentially distributed on the chassis at intervals and extend in the radial direction, and the annular disc and the chassis are axially arranged at intervals and are connected through the plurality of first fan blades.

In an embodiment, the rotor support further includes a plurality of second fan blades, and the plurality of second fan blades are arranged on the end face of the annular disc, which faces away from the first fan blades, at intervals along the circumferential direction.

In an embodiment, the rotor support further includes a plurality of third fan blades, and the plurality of third fan blades are convexly arranged on the outer side wall of the annular disc along the circumferential direction at intervals.

In an embodiment, the positions of the first fan blade, the second fan blade and the third fan blade correspond to each other.

In an embodiment, two ends of the third fan blade in the axial direction are respectively connected with the first fan blade and the second fan blade.

The utility model also provides a motor, which comprises a stator, a rotor and the rotor support, wherein the stator and the rotor are oppositely arranged in the radial direction and are rotationally connected, the rotor is positioned at the periphery of the stator, an annular groove for installing the rotor is formed in the inner wall of the annular disc, the central area of the stator is of an axially-through hollow structure, and the fan is positioned in the hollow structure.

The utility model also provides electric equipment which is characterized by comprising the motor.

Compared with the prior art, the rotor support provided by the embodiment is provided with the plurality of ventilation openings which are axially communicated, the fan is fixed in the central area of the chassis, the fan and the annular disk are positioned on the same side of the chassis, when the chassis and the annular disk rotate, external air enters the area of the annular disk through the ventilation openings of the chassis and flows in an accelerating way under the action of the fan, and the heat dissipation of the stator heating element is accelerated, so that the motor device is prevented from being damaged due to the fact that excessive heat is accumulated in the motor, the running reliability of the motor can be improved, and the service life of the motor can be prolonged; meanwhile, as the fan is fixed in the central area of the chassis, when the chassis and the annular disc rotate, the fan can be driven to rotate together, and a part for driving the fan to rotate is not required to be additionally arranged, so that the structure of the motor can be simplified.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a rotor support according to an embodiment of the present utility model.

Wherein, each reference sign in the figure:

1-a rotor support; 11-chassis; 111-vents; 12-an annular disk; 13-a first fan blade; 14-a second fan blade; 15-a third fan blade; 2-fans; 21-a body; 22-fan blades; 221-a first part; 222-a second portion; 223-third section.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model.

Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", or a third "may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

As shown in fig. 1, the motor provided by the utility model comprises a stator, a rotor and a rotor bracket 1, wherein the stator and the rotor are oppositely arranged in the radial direction and are rotationally connected, and the rotor is positioned at the periphery of the stator. Specifically, the stator and the rotor may be directly connected in a rotating manner, or may be indirectly connected in a rotating manner through other structures, so long as the stator and the rotor rotate relatively, which is not limited in this embodiment.

The stator is provided with stator windings, and a gap is formed between the opposite surfaces of the stator and the rotor, and the gap can be used for enabling relative movement between the stator and the rotor based on the change of a magnetic field generated by the stator windings.

The rotor bracket 1 comprises a chassis 11 and an annular disc 12, the annular disc 12 is connected to the peripheral edge of the chassis 11, a fan 2 is fixed in the central area of the chassis 11, the fan 2 and the annular disc 12 are located on the same side of the chassis 11, and a plurality of ventilation openings 111 penetrating along the axial direction are formed in the chassis 11.

The inner wall of the annular disk 12 is provided with an annular groove for mounting a rotor, and the rotor may be partially or entirely located in the annular groove, which is not particularly limited in this embodiment. The rotor is mounted in an annular groove, which is protected by an annular disc 12.

Specifically, the annular disc 12 is disposed around the peripheral edge of the chassis 11, and the annular disc 12 and the chassis 11 may be integrally formed or may be connected by other connection structures, which is not particularly limited in this embodiment.

Here, the term "axial" as used herein refers to a direction parallel to the rotation axis of the rotor frame 1, and the term "radial" as used herein refers to a direction perpendicular to the "axial".

The fan 2 is fixed in the central area of the chassis 11, the fan 2 and the annular disc 12 are positioned on the same side of the chassis 11, and a plurality of ventilation openings 111 penetrating along the axial direction are formed in the chassis 11.

The number of the ventilation openings 111 may be one or a plurality, and the shape of the ventilation openings 111 may be regular or irregular; when the number of the ventilation openings 111 is plural, the shape of the plural ventilation openings 111 may be the same or different, and the embodiment is not particularly limited.

Compared with the prior art, the rotor bracket 1 provided by the embodiment is characterized in that the chassis 11 is provided with a plurality of ventilation openings 111 which are axially communicated, the center area of the chassis 11 is fixedly provided with the fan 2, the fan 2 and the annular disc 12 are positioned on the same side of the chassis 11, when the chassis 11 and the annular disc 12 rotate, external air enters the area of the annular disc 12 through the ventilation openings 111 of the chassis 11 and flows in an accelerating way under the action of the fan 2, the heat dissipation of a stator heating element is accelerated, and the damage to a motor device caused by the accumulation of excessive heat in the motor is avoided, so that the running reliability of the motor and the service life of the motor can be improved; meanwhile, since the fan 2 is fixed in the central area of the chassis 11, when the chassis 11 and the annular disc 12 rotate, the fan 2 can be driven to rotate together, and no additional component for driving the fan 2 to rotate is required, so that the structure of the motor can be simplified.

In one embodiment, the fan 2 includes a main body 21 fixed to the chassis 11, and a plurality of blades 22, where the main body 21 is located in a central area of the chassis 11, and the plurality of blades 22 are distributed on an outer sidewall of the main body 21 along a circumferential direction; the fan blade 22 includes a first portion 221 and a second portion 222, the first portion 221 is disposed on an outer sidewall of the main body 21, the second portion 222 extends from the first portion 221 toward a direction away from the center of the chassis 11, and an axial height of the second portion 222 is smaller than an axial height of the first portion 221.

The heat dissipation effect of the motor can be further improved by extending the second portion 222 from the first portion 221 towards a direction away from the center of the chassis 11, and the second portion 222 can be extended according to practical needs, for example, when there is an axial height difference between the stator and the chassis 11, the second portion 222 can be extended to below the stator winding, so that when the chassis 11 rotates, the second portion 222 can also accelerate heat dissipation of the stator winding. It will be understood, of course, that depending on the actual construction of the motor, additional protrusions may be provided on the second portion 222 to increase the heat dissipation effect; meanwhile, since the main body 21 of the fan 2 is fixed on the chassis 11 and is located in the central area of the chassis 11, when the chassis 11 and the annular disc 12 rotate, the main body 21 is driven to rotate together, and no additional component for driving the main body 21 to rotate is required, so that the structure of the motor can be simplified.

In an embodiment, the fan blade 22 further includes a third portion 223, the third portion 223 is connected to a side of the second portion 222 facing away from the first portion 221, and an axial height of the third portion 223 is greater than an axial height of the second portion 222. By providing the third portion 223, the heat radiation effect can be improved.

Since the stator and the stator winding generate a large amount of heat, and since the stator winding is located at a side of the stator close to the rotor, the heat dissipation space of the stator and the stator winding is limited, and in practical application, the third portion 223 may correspond to the position of the stator, so as to accelerate heat dissipation of the stator and the stator winding.

In practical applications, the number of third portions 223 may be equal to the number of second portions 222, and the number of third portions 223 may also be greater than the number of second portions 222; when the number of the third portions 223 is greater than the number of the second portions 222, the third portions 223 are distributed on the chassis 11 at intervals along the circumferential direction, wherein a part of the number of the third portions 223 is connected with the second portions 222, and the remaining number of the third portions 223 is directly arranged on the chassis 11.

The relation between the height of the third portion 223 and the height of the first portion 221 is not limited, and may be reasonably selected according to the actual structure of the motor.

In an embodiment, the rotor bracket 1 further includes a plurality of first fan blades 13, and the plurality of first fan blades 13 are distributed on the chassis 11 at intervals along the circumferential direction and extend along the radial direction; the annular disk 12 is axially spaced from the chassis 11, and the first fan blades 13 are connected between the annular disk 12 and the chassis 11.

The annular disc 12 and the chassis 11 are axially arranged at intervals, and the first fan blades 13 are connected between the annular disc 12 and the chassis 11; based on this, in the first aspect, when the rotor bracket 1 rotates, the annular disc 12, the chassis 11 and the plurality of first fan blades 13 rotate together, and when the plurality of first fan blades 13 rotate, air between the annular disc 12 and the chassis 11 can be driven to flow, so that heat dissipation of the motor is accelerated; in the second aspect, the annular disc 12 is axially spaced from the chassis 11, and heat of the motor can be dissipated from the space between the annular disc 12 and the chassis 11, which is more beneficial to heat dissipation of the motor.

In an embodiment, the rotor support 1 further includes a plurality of second fan blades 14, and the plurality of second fan blades 14 are disposed on an end surface of the annular disk 12 facing away from the first fan blade 13 at intervals along a circumferential direction. Thus, when the annular disc 12 and the chassis 11 rotate, the plurality of second fan blades 14 rotate together to drive air on one side of the annular disc 12 away from the first fan blades 13 to flow, so that heat dissipation of the motor is accelerated.

The number and the relative positions of the first fan blades 13 and the second fan blades 14 may not be particularly limited, for example, the number of the first fan blades 13 and the number of the second fan blades 14 may be the same, and the number of the first fan blades 13 and the number of the second fan blades 14 may be different; when the number of the first fan blades 13 is the same as the number of the second fan blades 14, the positions of the first fan blades 13 and the second fan blades 14 may or may not be in one-to-one correspondence. Of course, when the number of the first fan blades 13 and the number of the second fan blades 14 are the same, it is preferable that the positions of the first fan blades 13 and the second fan blades 14 are in one-to-one correspondence.

In an embodiment, the rotor support 1 further includes a plurality of third fan blades 15, where the plurality of third fan blades 15 are disposed on the outer side wall of the annular disc 12 at intervals along the circumferential direction. Thus, when the rotor bracket 1 rotates, the plurality of third fan blades 15 rotate together to drive air near the outer side wall of the annular disc 12 to flow, so that heat dissipation of the motor is accelerated.

The number and positions of the third fan blades 15 may not be particularly limited, for example, the number of the third fan blades 15 may be the same as the number of the first fan blades 13 and/or the second fan blades 14, or may be different from the number of the first fan blades 13 and/or the second fan blades 14; when the number of the third fan blades 15 is the same as the number of the second fan blades 14, the positions of the third fan blades 15 may or may not be in one-to-one correspondence with the positions of the second fan blades 14. Of course, when the number of the third fan blades 15 is the same as the number of the second fan blades 14, preferably, the positions of the third fan blades 15 and the second fan blades 14 are in one-to-one correspondence, so that air flows formed by the third fan blades 15 and the second fan blades 14 are not blocked mutually, and the heat dissipation effect of the third fan blades 15 and the second fan blades 14 is optimal. Similarly, when the number of the third fan blades 15 is the same as the number of the first fan blades 13, preferably, the positions of the third fan blades 15 and the first fan blades 13 are in one-to-one correspondence, so that air flows formed by the third fan blades 15 and the first fan blades 13 are not blocked mutually, and the heat dissipation effect of the third fan blades 15 and the first fan blades 13 is optimal.

The axial height of the third fan blade 15 can be selected and set according to actual needs, the axial height of the third fan blade 15 can be the same as the axial height of the annular disc 12, and the axial height of the third fan blade 15 can be larger or smaller than the axial height of the annular disc 12, which is not particularly limited in comparison with the embodiment.

In one embodiment, the first blade 13, the second blade 14 and the third blade 15 are aligned in the axial direction. In this way, the air flows formed by the first fan blade 13, the second fan blade 14 and the third fan blade 15 are not blocked mutually, and the heat dissipation effect of the first fan blade 13, the second fan blade 14 and the third fan blade 15 is optimal.

The height of the third fan blade 15 in the axial direction may be equal to the axial distance between the first fan blade 13 and the second fan blade 14, and the height of the third fan blade 15 in the axial direction may also be smaller than the axial distance between the first fan blade 13 and the second fan blade 14.

In one embodiment, two ends of the third fan blade 15 in the axial direction are respectively connected with the first fan blade 13 and the second fan blade 14. At this time, the height of the third fan blade 15 in the axial direction is equal to the axial distance between the first fan blade 13 and the second fan blade 14, so that the height of the third fan blade 15 in the axial direction is increased, and the heat dissipation effect of the third fan blade 15 is improved.

Preferably, the first fan blade 13, the second fan blade 14 and the third fan blade 15 are integrally formed, so that a connecting structure and an assembling procedure between the first fan blade 13, the second fan blade 14 and the third fan blade 15 can be omitted, the structure and the assembling procedure of the rotor bracket 1 are simplified, and the assembling convenience, the assembling consistency and the connecting reliability of the first fan blade 13, the second fan blade 14 and the third fan blade 15 are effectively ensured.

It will be understood that the first fan blade 13, the second fan blade 14 and the third fan blade 15 can be integrally formed with the annular disc 12, so that the manufacturing process of the rotor bracket 1 is simplified, and the manufacturing difficulty of the rotor bracket 1 is reduced.

The utility model also provides electric equipment comprising the motor. In particular, the electrically powered device may be an automated device or a semi-automated device. Here, the automatic apparatus or the semiautomatic apparatus is an apparatus applied to various fields, for example, fields of industry, education, nursing, home appliances, medical treatment, and the like. In one embodiment, the electrically powered device is a washing machine. In another embodiment, the electric device is an electric bicycle. In other embodiments, the electrically powered device is an electric motorcycle.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The utility model provides a rotor support, its characterized in that includes chassis and annular dish, annular dish connect in the periphery edge of chassis, the central zone of chassis is fixed with the fan, the fan with annular dish is located the same side of chassis, set up a plurality of vents that link up along the axial on the chassis.

2. The rotor support of claim 1, wherein the fan comprises a main body fixed to the chassis and a plurality of blades, the main body being located in a central region of the chassis, the plurality of blades being circumferentially distributed on an outer sidewall of the main body;

3. The rotor support of claim 2, wherein the fan blade further comprises a third portion, the third portion is connected to a side of the second portion facing away from the first portion, and an axial height of the third portion is greater than an axial height of the second portion.

4. A rotor support according to any one of claims 1 to 3, further comprising a plurality of first fan blades circumferentially spaced apart from the chassis and extending radially; the annular disc and the chassis are axially arranged at intervals, and the first fan blades are connected between the annular disc and the chassis.

5. The rotor support of claim 4 further comprising a plurality of second fan blades circumferentially spaced apart on an end face of the annular disk facing away from the first fan blades.

6. The rotor support of claim 5, further comprising a plurality of third blades, wherein the plurality of third blades are circumferentially spaced apart from the outer sidewall of the annular disk.

7. The rotor support of claim 6 wherein the first blade, the second blade, and the third blade are axially aligned.

8. The rotor holder according to claim 7, wherein both ends of the third blade in the axial direction are connected to the first blade and the second blade, respectively.

9. An electric motor, characterized by comprising a stator, a rotor and a rotor support according to any one of claims 1 to 8, wherein the stator and the rotor are arranged oppositely in the radial direction and are rotationally connected, the rotor is positioned at the periphery of the stator, an annular groove for installing the rotor is formed in the inner wall of the annular disc, the central area of the stator is of an axially through hollow structure, and the fan is positioned in the hollow structure.

10. An electrically powered device comprising the motor of claim 9.