CN213817370U

CN213817370U - Rotor structure of permanent magnet synchronous motor

Info

Publication number: CN213817370U
Application number: CN202022990587.9U
Authority: CN
Inventors: 叶开贵
Original assignee: Fujian Mingdong New Energy Power Technology Co ltd
Current assignee: Fujian Mingdong New Energy Power Technology Co ltd
Priority date: 2020-12-12
Filing date: 2020-12-12
Publication date: 2021-07-27
Anticipated expiration: 2030-12-12

Abstract

The utility model relates to a rotor structure of permanent magnet synchronous motor, which comprises a winding seat, an air passage, a lining rod, a motor shaft, a carbon ring and a fixed hole, wherein the outer wall of the motor shaft is provided with a circle of winding seat, the top of the winding seat is provided with a top plate, the air passage and an exhaust hole are arranged between the winding seat and the motor shaft, so that high-temperature heat generated when copper core wires wound on the winding seat work is discharged outwards through the exhaust hole and the air passage, thereby effectively preventing the arrangement of the exhaust structure due to the high-speed rotation of the rotor, leading the rotor structure to be more reasonable and prolonging the service life of the rotor, a centimeter gap is left between the carbon ring arranged at the front end of the rotor shaft and the outer end surface of the motor shaft, just in time, leading the air passage arranged on the rotor to be outwards diffused, leading the heat generated when the rotor rotates at high speed to be quickly discharged, leading the installation position of the magnetic ring used for forming noise reduction friction with the end cover of the motor to be more reasonable, the effective heat extraction and heat dissipation of the rotor are ensured.

Description

Rotor structure of permanent magnet synchronous motor

Technical Field

The utility model relates to an electric motor rotor technical field, concretely relates to PMSM's rotor structure.

Background

The induction motor has a rotor comprising a rotating shaft core and a closed conductor embedded in the core, and the rotor is driven by a rotating magnetic field generated by a stator winding to generate high-speed rotary motion. The two ends of the rotor adopt rolling bearings and are fixedly arranged in an end cover of a motor shell, an induction coil is arranged on the rotor, and the coil is wound on a wire winding seat arranged on the periphery of the rotor in a winding mode.

The existing motor rotor can generate high temperature when rotating for a long time, if heat cannot be reasonably discharged, the coil is easy to be burnt, and therefore, if the heat dissipation structure is unreasonable, the service life of the rotor can be influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a PMSM's rotor structure has seted up bleeder vent and air flue between winding seat on the rotor and the pivot, makes the outside discharge of high fever that the high-speed rotatory in-process of rotor formed to prevent that the winding from scorching, improve its life.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a PMSM's rotor structure, includes that the group winds the seat, the air flue, the lining pole, the motor shaft, the fin, the exhaust hole, the roof, the louvre, carbocycle and fixed orifices, the motor shaft outer wall is provided with the round group and winds the seat, and just on line the group is provided with the roof around a top, seted up the round fixed orifices on the carbocycle, the carbocycle is two, two the carbocycle pass through the fixed orifices and be fixed in the motor shaft both ends respectively.

Preferably, the bottom of the wire winding seat is provided with an air passage, and the top surface of the wire winding seat is also provided with a lining rod, so that a bottom gap is formed after copper wires are wound.

Preferably, the upper edge of the lining rod is designed to be rounded.

Preferably, the inner end of the motor shaft is provided with a radiating fin, the motor shaft is provided with an exhaust hole, a radiating hole is formed between the top plate and the wire winding seat, and the radiating hole is communicated with the exhaust hole.

Preferably, a distance gap of one centimeter is left between the carbon ring installed on the motor shaft and the exhaust hole.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. air flue and exhaust hole have been seted up between group wound seat and motor shaft for the high temperature heat that the winding formed during operation of copper core on the group wound seat is outwards discharged by exhaust hole and air flue, can effectively prevent because of the high-speed rotation of rotor, and the high fever of production leads to the coil to generate heat the scorch, and exhaust structure's setting makes rotor structure more reasonable, has improved its life.

2. A centimeter gap is reserved between the carbon ring installed at the front end of the rotor shaft and the outer end face of the motor shaft, the gap can just enable an air passage formed in the rotor to disperse air outwards, and heat generated when the rotor rotates at a high speed is rapidly discharged, so that the installation position of the magnetic ring used for forming noise reduction friction with the motor end cover is more reasonable, and effective heat extraction and heat dissipation of the rotor are guaranteed.

Drawings

Fig. 1 is a schematic structural view of a front view plane of the present invention;

fig. 2 is a schematic view of the axial view angle structure of the present invention, which is drawn from fig. 1;

fig. 3 is a schematic structural diagram of a left side view angle of the present invention;

FIG. 4 is an enlarged schematic view of part A of the present invention;

fig. 5 is the inside each structure schematic diagram after the utility model discloses cut open.

Description of the main reference numerals:

1. a wire winding seat; 101. an airway; 102. a lining rod; 2. a motor shaft; 201. a heat sink; 202. an exhaust hole; 3. a top plate; 301. heat dissipation holes; 4. a carbocyclic ring; 401. and (7) fixing holes.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the technical personnel in the field without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., appear based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case to those skilled in the art.

Referring to fig. 1-5, a rotor structure of a permanent magnet synchronous motor includes a winding seat 1, an air passage 101, a lining rod 102, a motor shaft 2, a heat sink 201, an air outlet 202, a top plate 3, a heat sink 301, a carbon ring 4 and a fixing hole 401, wherein the carbon ring 4 is provided with a circle of fixing hole 401, the carbon ring 4 is provided with two positions, the two carbon rings 4 are respectively fixed at two ends of the motor shaft 2 through the fixing hole 401, the carbon rings 4 are installed at two ends of the motor shaft 2 for enabling the rotor to form a noise reduction fit with an inner wall of the motor cover when the rotor is installed in the motor cover to rotate, the carbon ring 4 is a prior art, and it is not described herein that the outer wall of the motor shaft 2 is provided with a circle of winding seat 1, and the top plate 3 is provided at the top of the winding seat 1, unlike the prior art, the air passage 101 is provided at the bottom of the winding seat 1, and the lining rod 102 is further provided at the top of the winding seat 1, so that the copper line utilizes air flue 101 and lining pole 102 to form bottom heat dissipation space when winding in group winding seat 1, when the rotor of being convenient for is high-speed rotatory, produced heat outwards discharges to prevent that the burnt phenomenon from appearing because of the high temperature in the copper line of coiling, make the life of rotor improve greatly, appear hindering the line phenomenon for preventing the copper line when lining pole 102, consequently the design of the last arris fillet of lining pole 102.

As shown in fig. 1 and 2, a heat sink 201 is further disposed at the inner end of the motor shaft 2, the heat sink 201 is disposed to better dissipate the high heat generated by the rotation of the rotor toward both sides, so that the heat dissipation effect is better, an exhaust hole 202 is further disposed on the motor shaft 2, a heat dissipation hole 301 is disposed between the top plate 3 and the wire winding base 1, the heat dissipation hole 301 is communicated with the exhaust hole 202, so that the heat generated can be dissipated outward through an exhaust channel formed by the heat dissipation hole 301 and the exhaust hole 202, thereby improving the heat dissipation efficiency.

As shown in fig. 1 and 2, in order to make the installation position design of the carbon ring 4 more reasonable, the exhaust hole 202 can be ensured to effectively discharge heat outwards, so that a heat discharge gap of one centimeter is left between the carbon ring 4 installed on the motor shaft 2 and the exhaust hole 202.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. The utility model provides a permanent magnet synchronous motor's rotor structure, includes that the line is around seat (1), air flue (101), and lining pole (102), motor shaft (2), fin (201), exhaust hole (202), roof (3), louvre (301), carbocycle (4) and fixed orifices (401), its characterized in that: the motor shaft (2) outer wall is provided with a circle group and winds seat (1), and is provided with roof (3) around seat (1) top on line group, a circle fixed orifices (401) have been seted up on carbocycle (4), and carbocycle (4) are two, two carbocycles (4) be fixed in motor shaft (2) both ends respectively through fixed orifices (401).

2. The rotor structure of a permanent magnet synchronous motor according to claim 1, characterized in that: the air passage (101) is formed in the bottom of the wire winding seat (1), and the lining rod (102) is further arranged on the top surface of the wire winding seat (1) so that a bottom gap is formed after copper wires are wound.

3. The rotor structure of a permanent magnet synchronous motor according to claim 1, characterized in that: the upper edge of the lining rod (102) is designed to be round.

4. The rotor structure of a permanent magnet synchronous motor according to claim 3, characterized in that: the inner end of the motor shaft (2) is provided with a radiating fin (201), the motor shaft (2) is provided with an exhaust hole (202), a radiating hole (301) is formed between the top plate (3) and the wire winding seat (1), and the radiating hole (301) is communicated with the exhaust hole (202).

5. The rotor structure of a permanent magnet synchronous motor according to claim 4, characterized in that: a distance gap of one centimeter is reserved between the carbon ring (4) arranged on the motor shaft (2) and the exhaust hole (202).