CN211063431U - Low-speed large-torque motor with mixed circulation cooling structure - Google Patents
Low-speed large-torque motor with mixed circulation cooling structure Download PDFInfo
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- CN211063431U CN211063431U CN201921257924.4U CN201921257924U CN211063431U CN 211063431 U CN211063431 U CN 211063431U CN 201921257924 U CN201921257924 U CN 201921257924U CN 211063431 U CN211063431 U CN 211063431U
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Abstract
The utility model discloses a big torque motor of low-speed with mixed cycle cooling structure, which comprises a housing, rotor core and stator core, the assembly notch is seted up to the stator core outward flange, inward flange equipartition rectangular channel, stator ventilation groove is radially seted up to stator core, set up a plurality of rotor magnet steel cell types on the outer anchor ring of rotor core, the rotor magnet steel cell type is the T shape of invering and arranges, interior installation rotor magnet steel, the notch is seted up with the corresponding position of rotor magnet steel cell type to the rotor core outward flange, the notch communicates with each other with rotor magnet steel cell type, rotor ventilation groove is radially seted up to rotor core, equipartition pull rod screw on the rotor core, the fan is equipped with on the main shaft, it has the water course to open on the casing inside wall, arrange water course heat dissipation muscle in the water. The utility model discloses a when reducing the inside temperature of motor, can also strengthen motor output performance.
Description
Technical Field
The utility model belongs to the technical field of the motor technique and specifically relates to a low-speed big torque motor with mixed circulation cooling structure.
Background
The permanent magnet motor has the characteristics of low cost, low energy consumption, simple structure, low failure rate and the like, and is more and more widely applied. Most permanent magnet machines include a rotor and a stator. A large number of magnetic steel sheets are distributed on the rotor, and a magnet exciting coil is arranged on the stator. The magnetic force generated by the magnet exciting coil and the magnetic force of the magnetic steel sheet generate acting force, and then the rotation of the rotor is realized.
During the energy conversion process of the motor, various losses exist in the motor, such as winding loss generated by current in a conductor, core loss caused by alternating magnetic fields in the core, mechanical loss caused by ventilation and mechanical friction and the like. These losses are converted into heat that propagates to the surrounding medium, raising the temperature of the motor components. When the temperature exceeds the temperature allowed by the insulation, the insulation and even the motor will be damaged. The existing permanent magnet motor is difficult to operate in a high-temperature environment, the magnetic force of the magnetic steel sheet is quickly reduced in a high-temperature environment, and the service life of the permanent magnet motor can be shortened. In the permanent magnet motor which runs under a high load state for a long time, the ambient temperature of the rotor is often higher, and the service life of the permanent magnet motor can be shortened.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the defects of the prior art are overcome, the low-speed large-torque motor with the mixed circulating cooling structure is provided, the temperature rise of the motor can be effectively reduced, and the service life of the motor is prolonged.
The utility model provides a technical scheme that its technical problem adopted is: a low-speed large-torque motor with a mixed circulation cooling structure comprises a machine shell, a rotor core and a stator core which are coaxially arranged in the machine shell, wherein the outer edge of the stator core is provided with at least 3 assembling notches, the inner edge of the stator core is uniformly provided with a plurality of rectangular grooves for placing stator windings, the stator core is radially provided with stator ventilating grooves, the outer ring surface of the rotor core is provided with a plurality of rotor magnetic steel groove types, the rotor magnetic steel groove types are arranged in an inverted T shape and comprise a first groove type and a second groove type which are vertical to each other, rotor magnetic steel is arranged in the first groove type, notches are arranged at the outer edge of the rotor core and correspond to the rotor magnetic steel groove types, the notches are communicated with the rotor magnetic steel groove types, the rotor core is radially provided with the rotor ventilating grooves, a plurality of pull rod screw holes are uniformly distributed on the rotor core, a fan is, the water channel is internally provided with water channel heat dissipation ribs, and the outer wall of the shell is provided with a water inlet and a water outlet which are communicated with the water channel.
Furthermore, 24 assembling notches are evenly distributed on the circumference of the assembling notch.
Furthermore, 72 rectangular grooves are uniformly distributed on the circumference.
Further, the rotor magnetic steel is embedded in the first groove type, the width of the first groove type is slightly larger than that of the rotor magnetic steel and larger than that of the notch, the width direction of the second groove type is overlapped in the length direction of the first groove type, and the length of the first groove type is slightly larger than that of the rotor magnetic steel.
Furthermore, the number of the stator ventilation slots is set to be 9 which are uniformly arranged along the length direction of the stator core along the radial direction.
Furthermore, the number of the rotor ventilation slots is set to be 9 which are uniformly arranged along the length direction of the rotor iron core along the radial direction.
Furthermore, the height from the fan to the axial center line is consistent with the outer diameter of the rotor core.
Furthermore, the water channel heat dissipation ribs are welded in the water channel in a staggered mode.
The utility model has the advantages that the low-speed large-torque motor with the mixed circulation cooling structure forms a good motor cooling circulation structure through the fan, the stator and rotor ventilation grooves and the shell circulation water cooling structure, and can effectively reduce the temperature rise of the motor; the pull rod screw holes are formed in the rotor core, so that the magnetic steel structure is more compact, and a magnetic steel tool is simplified; the rotor magnetic steel groove type adopts an inverted T-shaped structure, and is matched with magnetic steel in a tangential magnetizing mode, so that the magnetic resistance is reduced, the output capacity of the motor is improved, and the problems of motor output and magnetic steel consumption are solved.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic diagram of a stator-rotor core structure;
FIG. 3 is an enlarged partial schematic view of FIG. 2;
FIG. 4 is an expanded view of the arrangement position of the water channel heat dissipation ribs;
in the figure, 1, a machine shell, 2, a stator iron core, 3, a stator ventilating slot, 4, a rotor iron core, 5, a pull rod screw hole, 6, a rotor ventilating slot, 7, a water inlet and a water outlet, 8, a fan, 9, a water channel heat dissipation rib, 10, a rotor magnetic steel slot type, 101, a first slot type, 102, a second slot type, 11, a rectangular slot, 12, an assembly slot opening, 13, a slot opening and 14, rotor magnetic steel are arranged in the machine shell.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1, a low-speed high-torque motor with a hybrid circulating cooling structure comprises a casing 1, a rotor core 4 and a stator core 2 coaxially arranged in the casing 1, wherein the casing 1 is formed by welding steel plate materials of Q235B, the stator core 2 is made of silicon steel materials with the brand number of 50W470, as shown in fig. 2 and 3, 24 assembly notches 12 are uniformly distributed on the outer edge of the stator core 2, 72 rectangular slots 11 are uniformly distributed on the inner edge for placing stator windings, 9 stator ventilation slots 3 are radially formed in the length direction of the stator core 2, a plurality of rotor magnetic steel slot types 10 are arranged on the outer ring surface of the rotor core 4, the rotor magnetic steel slot types 10 are arranged in an inverted T shape and are composed of a first slot type 101 and a second slot type 102 which are perpendicular to each other, a rotor magnetic steel 14 is embedded in the first slot type 101, the rotor magnetic steel 14 is made of N38SH magnetic steel, the width of the first slot type 101 is, the width of the second groove type 102 is larger than that of the notch 13, the width direction of the second groove type 102 is overlapped in the length direction of the first groove type 101, the length of the first groove type 101 is slightly larger than that of the rotor magnetic steel 14, the notch 13 is formed in the position, corresponding to the rotor magnetic steel groove type 10, of the outer edge of the rotor iron core 4, the notch 13 is communicated with the rotor magnetic steel groove type 10, 9 rotor ventilating grooves 6 are radially formed in the length direction of the rotor iron core 4, a plurality of pull rod screw holes 5 are uniformly distributed in the rotor iron core 4, the magnetic steel structure is more compact, the magnetic steel tool is simplified, a fan 8 is mounted on a main shaft, the height from the fan 8 to the axial center line is consistent with the outer diameter of the rotor iron core 4, a water channel is formed in the inner side wall of the machine shell 1, water channel radiating ribs 9 (shown in figure 4) are welded in the water channel in a staggered, the water pressure is 0.2-0.5 Mpa.
The utility model discloses an innovation and improvement to current advanced motor design technique design the for the colliery motor structure, obtain a low-speed big torque motor who has mixed circulation cooling structure, through fan, stator and rotor ventilation groove and casing circulating water cooling structure, form good motor cooling circulation structure, can effectively reduce the motor temperature rise, compare with former actuating system performance simultaneously, output performance improves about 1.5%, further enlarges the dominant property performance of this motor. Through the test of 450kW-60p-75rpm of the actual prototype, compared with the common low-speed permanent magnet motor of the same type, the novel structure effectively improves the motor efficiency by about 1.5%, improves the power factor by about 2%, and reduces the noise and the vibration by about 10%.
The utility model discloses a can also combine the intelligent driver of the supporting use with the motor, the operational aspect of real-time supervision motor further improves the security performance and the reliability of motor.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (8)
1. A low-speed large-torque motor with a mixed circulation cooling structure is characterized in that: comprises a machine shell (1), a rotor core (4) and a stator core (2) which are coaxially arranged in the machine shell (1), wherein the outer edge of the stator core (2) is provided with at least 3 assembling notches (12), the inner edge is uniformly distributed with a plurality of rectangular grooves (11) for placing stator windings, the stator core (2) is radially provided with stator ventilation grooves (3), the outer annular surface of the rotor core (4) is provided with a plurality of rotor magnetic steel groove types (10), the rotor magnetic steel groove types (10) are arranged in an inverted T shape and consist of a first groove type (101) and a second groove type (102) which are mutually vertical, rotor magnetic steel (14) is arranged in the first groove type (101), the outer edge of the rotor core (4) is provided with a notch (13) corresponding to the rotor magnetic steel groove type (10), the notch (13) is communicated with the rotor magnetic steel groove type (10), and the rotor ventilation grooves (6) are radially arranged on the rotor core (4), a plurality of pull rod screw holes (5) are uniformly distributed on the rotor core (4), a fan (8) is arranged on the main shaft, a water channel is formed in the inner side wall of the machine shell (1), water channel heat dissipation ribs (9) are arranged in the water channel, and a water inlet and a water outlet (7) communicated with the water channel are formed in the outer wall of the machine shell (1).
2. A low-speed high-torque motor having a hybrid cycle cooling structure as set forth in claim 1, wherein: 24 assembling notches (12) are evenly distributed on the circumference.
3. A low-speed high-torque motor having a hybrid cycle cooling structure as set forth in claim 1, wherein: 72 rectangular grooves (11) are evenly distributed on the circumference.
4. A low-speed high-torque motor having a hybrid cycle cooling structure as set forth in claim 1, wherein: the rotor magnetic steel (14) is embedded in the first groove type (101), the width of the first groove type (101) is slightly larger than that of the rotor magnetic steel (14) and larger than that of the notch (13), the width direction of the second groove type (102) is overlapped in the length direction of the first groove type (101), and the length of the first groove type (101) is slightly larger than that of the rotor magnetic steel (14).
5. A low-speed high-torque motor having a hybrid cycle cooling structure as set forth in claim 1, wherein: the number of the stator ventilation slots (3) is 9 which are uniformly arranged along the length direction of the stator iron core (2) along the radial direction.
6. A low-speed high-torque motor having a hybrid cycle cooling structure as set forth in claim 1, wherein: the number of the rotor ventilation slots (6) is 9 which are uniformly arranged along the length direction of the rotor iron core (4) along the radial direction.
7. A low-speed high-torque motor having a hybrid cycle cooling structure as set forth in claim 1, wherein: the height from the fan (8) to the axial center line is consistent with the outer diameter of the rotor core (4).
8. A low-speed high-torque motor having a hybrid cycle cooling structure as set forth in claim 1, wherein: the water channel heat dissipation ribs (9) are welded in the water channel in a staggered mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921257924.4U CN211063431U (en) | 2019-08-05 | 2019-08-05 | Low-speed large-torque motor with mixed circulation cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921257924.4U CN211063431U (en) | 2019-08-05 | 2019-08-05 | Low-speed large-torque motor with mixed circulation cooling structure |
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| Publication Number | Publication Date |
|---|---|
| CN211063431U true CN211063431U (en) | 2020-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921257924.4U Active CN211063431U (en) | 2019-08-05 | 2019-08-05 | Low-speed large-torque motor with mixed circulation cooling structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115347701A (en) * | 2022-10-13 | 2022-11-15 | 常州精控电机电器有限公司 | Motor with internal oil cooling heat dissipation improved structure |
-
2019
- 2019-08-05 CN CN201921257924.4U patent/CN211063431U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115347701A (en) * | 2022-10-13 | 2022-11-15 | 常州精控电机电器有限公司 | Motor with internal oil cooling heat dissipation improved structure |
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