CN212162947U - High power density induction motor rotor punching and rotor - Google Patents
High power density induction motor rotor punching and rotor Download PDFInfo
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- CN212162947U CN212162947U CN202020050304.XU CN202020050304U CN212162947U CN 212162947 U CN212162947 U CN 212162947U CN 202020050304 U CN202020050304 U CN 202020050304U CN 212162947 U CN212162947 U CN 212162947U
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Abstract
The utility model discloses a high power density induction motor rotor punching and rotor, the rotor punching body is circular, 34 pentagonal rotor grooves along circumference evenly distributed are equipped with on the rotor body, rotor groove height H1 is 34.7 millimeters, rotor groove shoulder width W1 is 16 millimeters, rotor groove bottom width W2 is 11 millimeters, rotor groove top is 4.6 millimeters apart from rotor excircle L1, rotor punching is evenly distributed 16 oval axial ventilation holes on the body, carry out position control to it by two circular positioning line, oval axial ventilation hole last semicircle diameter is 32.1 millimeters, semicircle diameter is 26.5 millimeters down. The utility model discloses an oval axial ventilation hole has increased motor axial draught area, has reduced motor axial windage, and the rotor is towards the excircle in the piece and rotor groove size reasonable in design, has improved motor cooling performance, has improved motor power density.
Description
Technical Field
The utility model relates to a technical field is made to the motor, specifically is a high power density induction motor rotor punching and rotor.
Background
An electric motor is a device that converts electrical energy into mechanical energy. It mainly comprises an electromagnet winding or distributed stator winding for generating a magnetic field and a rotating armature or rotor. The rotating magnetic field is generated by the electrified coil and acts on the rotor to form magnetoelectric power rotating torque. The electric motors in the power system are mostly alternating current motors, which can be synchronous motors or asynchronous motors. The motor mainly comprises a stator and a rotor, and the direction of the forced movement of the electrified conducting wire in the magnetic field is related to the current direction and the magnetic induction line direction. The working principle is that the magnetic field acts on the current to rotate the motor.
An electric motor is a tool for energy conversion, which is mainly composed of a wound stator and a rotor. The rotor mainly comprises a rotor core and a shaft, wherein the rotor core is formed by laminating a plurality of rotor punching sheets. The rotor punching sheet is an important part of the motor, and the inner and outer diameter size, the number of rotor slots, the slot type and the shape of the axial ventilation hole can directly influence the performance of the motor.
The axial ventilation holes on the common motor rotor punching sheet are circular or trapezoidal, and form an axial ventilation channel after being laminated. When the circular axial vent hole is adopted, the area of the vent hole is often smaller due to the limitation of the magnetic density of the rotor yoke part, so that the cooling performance of the motor is severely limited; when the trapezoidal axial ventilation holes are adopted, the areas of the ventilation holes can be properly increased, but the wind resistance of the axial ventilation channel with the structure is larger, and the actual cooling effect of the motor is seriously influenced.
For the reasons, it is necessary to improve the problems of small axial air volume of the motor, poor cooling effect of the motor, low power density and the like caused by the shape of the ventilation holes of the rotor, the groove type of the rotor and the number of grooves when the current induction motor operates.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high power density induction motor rotor is towards piece and rotor to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high power density induction motor rotor punching, includes the rotor punching body, the rotor punching body is circular, rotor punching body external diameter D1 is 395 millimeters, and internal diameter D2 is 170 millimeters, the rotor punching body (be equipped with 34 on the rotor punching body along circumference evenly distributed's pentagonal rotor groove, the rotor groove height is 34.7 millimeters, rotor groove shoulder width W1 is 16 millimeters, rotor groove bottom width W2 is 11 millimeters, the rotor groove top is 4.6 millimeters apart from rotor excircle L1, evenly distributed 16 oval axial ventilation holes on the rotor punching body, carry out position control to it by first circular location line and the circular location line of second.
Preferably, the rotor groove shoulder oblique angle alpha degree is 34.51 degrees, the two ends of the rotor groove bottom are provided with guide fillets, and the arc radius R1 is 1 mm.
Preferably, the first and second circular alignment lines have outer diameters D3 and D4 of 254.9 mm and 229 mm, respectively, and intersect the upper and lower semi-circles of the oval axial vent, respectively, the upper semi-circle outer diameter D5 being 32.1 mm and the lower semi-circle outer diameter D6 being 26.5 mm.
Preferably, the rotor of the rotor sheet of the high-power-density induction motor comprises a rotor core formed by laminating a plurality of rotor sheet bodies, and the rotor core is formed into the rotor after being cast with aluminum and sleeved with a shaft.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model is suitable for the rotor core of the two-pole high power density induction motor with various cooling modes, the utility model adopts the oval axial ventilation holes, increases the axial ventilation area of the rotor, reduces the wind resistance of the axial ventilation channel, improves the cooling performance of the motor, and improves the power density of the motor; the utility model discloses in, rotor cell type and groove number reasonable in design are guaranteeing under the condition that each magnetic density of rotor, have the increase of axial ventilation hole area profitably to further improve the power density of motor.
Drawings
Fig. 1 is a schematic structural diagram of a rotor sheet of a high power density induction motor.
Fig. 2 is a partially enlarged view of portion i in fig. 1.
Fig. 3 is a partial enlarged view of a portion ii in fig. 1.
FIG. 4 is a comparison of the rated operating temperature of an example motor versus the original motor.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a high power density induction motor rotor punching sheet comprises a rotor punching sheet body 1, wherein the rotor punching sheet body 1 is circular, the outer diameter D1 of the rotor punching sheet body 1 is 395 mm, the inner diameter D2 of the rotor punching sheet body is 170 mm, 34 pentagonal rotor grooves 2 which are uniformly distributed along the circumference are arranged on the rotor punching sheet body 1, the heights of the rotor grooves 2 are 34.7 mm, the shoulder widths W1 of the rotor grooves 2 are 16 mm, the bottom widths W2 of the rotor grooves 2 are 11 mm, the distance between the tops of the rotor grooves 2 and the outer circle L1 of a rotor is 4.6 mm, 16 oval axial ventilation holes 3 are uniformly distributed on the rotor punching sheet body 1, and the rotor punching sheet body is subjected to position control through a first circular positioning line 4 and a second circular positioning line 5; the angle alpha of the shoulder oblique angle of the rotor groove 2 is 34.51 degrees, guide fillets are arranged at two ends of the bottom of the rotor groove 2, and the arc radius R1 is 1 mm; the first and second circular alignment wires 4 and 5 have outer diameters D3 and D4 of 254.9 mm and 229 mm, respectively, and intersect the upper and lower semi-circles of oval axial vents, respectively, the upper semi-circle outer diameter D5 being 32.1 mm and the lower semi-circle outer diameter D6 being 26.5 mm.
The utility model discloses a carry out analog simulation to the embodiment motor through simulation software, the simulation result shows that each magnetic density of this motor rotor distributes rationally, and the motor rotor amount of wind is by 2.13m before3the/S is increased to 3.76m3And S, the wind resistance of the motor rotor ventilation duct is not changed greatly. The temperature of the motor during temperature operation is reduced from the original 105 ℃ to 85 ℃, and the design correctness of the rotor punching sheet is shown.
The utility model provides an embodiment still provides a high power density induction motor rotor punching, including a plurality of above-mentioned rotor punching body 1, fold the rotor core that presses formation by a plurality of rotor punching body 1, the rotor core forms the rotor through cast aluminium, cover behind the axle. After the rotor adopts the rotor punching sheet body 1, the cooling effect of the motor can be improved, and the power density of the motor is improved.
To sum up, the utility model is suitable for the rotor core of the two-pole high power density induction motor of various cooling methods, the utility model adopts the oval axial ventilation hole, increases the axial ventilation area of the rotor, reduces the wind resistance of the axial ventilation duct, improves the cooling performance of the motor, and improves the power density of the motor; the utility model discloses in, rotor cell type and groove number reasonable in design are guaranteeing under the condition that each magnetic density of rotor, have the increase of axial ventilation hole area profitably to further improve the power density of motor.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a high power density induction motor rotor punching, includes rotor punching body (1), its characterized in that: rotor punching body (1) is circular, rotor punching body (1) external diameter D1 is 395 millimeters, and internal diameter D2 is 170 millimeters, be equipped with 34 pentagonal rotor grooves (2) along circumference evenly distributed on rotor punching body (1), rotor groove (2) height is 34.7 millimeters, rotor groove (2) shoulder width W1 is 16 millimeters, rotor groove (2) bottom width W2 is 11 millimeters, rotor groove (2) top is 4.6 millimeters apart from rotor excircle L1, rotor punching body (1) is going up evenly distributed 16 oval axial ventilation holes (3), is carried out position control to it by first circular positioning line (4) and second circular positioning line (5).
2. The high power density induction motor rotor sheet of claim 1, wherein: the rotor groove (2) shoulder oblique angle alpha degree is 34.51 degrees, the two ends of the groove bottom of the rotor groove (2) are provided with guide fillets, and the arc radius R1 is 1 mm.
3. The high power density induction motor rotor sheet of claim 1, wherein: the outer diameters D3 and D4 of the first circular positioning line (4) and the second circular positioning line (5) are 254.9 mm and 229 mm respectively and intersect with the upper semicircle and the lower semicircle of the oval axial vent respectively, the outer diameter D5 of the upper semicircle is 32.1 mm, and the outer diameter D6 of the lower semicircle is 26.5 mm.
4. A rotor utilizing the high power density induction motor rotor sheet of claim 1, wherein: the rotor punching sheet comprises a rotor core formed by laminating a plurality of rotor punching sheet bodies, and the rotor core forms a rotor after being cast with aluminum and sleeved with a shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020050304.XU CN212162947U (en) | 2020-01-10 | 2020-01-10 | High power density induction motor rotor punching and rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020050304.XU CN212162947U (en) | 2020-01-10 | 2020-01-10 | High power density induction motor rotor punching and rotor |
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| Publication Number | Publication Date |
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| CN212162947U true CN212162947U (en) | 2020-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020050304.XU Active CN212162947U (en) | 2020-01-10 | 2020-01-10 | High power density induction motor rotor punching and rotor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111130237A (en) * | 2020-01-10 | 2020-05-08 | 万高(南通)电机制造有限公司 | High power density induction motor rotor punching sheet, rotor and motor |
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2020
- 2020-01-10 CN CN202020050304.XU patent/CN212162947U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111130237A (en) * | 2020-01-10 | 2020-05-08 | 万高(南通)电机制造有限公司 | High power density induction motor rotor punching sheet, rotor and motor |
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