High-efficiency motor device with oblique-angle magnetic steel

Abstract

The invention belongs to the technical field of electromagnetic electric, and discloses a high-efficiency motor device with bevel magnetic steel, which comprises a rotor and a stator, the rotor comprises a rotor shell, the bevel magnetic steel, a rotor fan and a rotor central shaft, the rotor fan and the bevel magnetic steel are fixedly mounted on the rotor central shaft, the rotor shell wraps the bevel magnetic steel, and the bevel magnetic steel is fixedly mounted on the rotor fan. The rotor fan is arranged outside the rotor central shaft; the stator comprises a stator iron core, a coil and a stator support, each stator tooth of the stator iron core is a straight slot winding, each stator tooth is wound with the coil, and the stator iron core is fixedly installed on the stator support. By using the matching technology of the straight slot stator and the rotor with the oblique angle magnetic steel, the amplitude of harmonic waves can be effectively reduced, the vibration noise of the motor is reduced, which is equivalent to the traditional matching technology of the skewed slot stator and the right-angle magnetic steel, the winding equipment cost can be reduced by 20%, the winding efficiency is improved by 30%, the slot fullness rate is improved by 5-10%, and the motor efficiency is improved by 2%.

Description

Technical Field

[0001] The present invention belongs to the field of electromagnetic motor technology, and in particular relates to a motor device which reduces production cost, improves production efficiency, and improves motor efficiency by increasing motor slot fill rate. Background Art

[0002] With the increase of motor power per unit volume, speed and efficiency, the vibration and noise of motors are becoming more and more prominent. Some manufacturers use core skew technology to reduce the amplitude of harmonics, thereby reducing vibration and noise.

[0003] However, compared with straight-slot motors, the skewed slots in the core make winding difficult, reducing production efficiency by about 30%, and the slot fill rate by 5-10%. At the same time, the cost of production equipment increases by 20%. Summary of the invention

[0004] In order to solve the above technical problems existing in the prior art, the present invention proposes a high-efficiency motor device with angled magnetic steel, and its specific technical solution is as follows: A high-efficiency motor device with beveled magnetic steel comprises a rotor and a stator, wherein the rotor comprises a rotor housing, beveled magnetic steel, a rotor fan and a rotor central axis, wherein the rotor fan and the beveled magnetic steel are fixedly mounted on the rotor central axis, and the rotor housing is wrapped around the beveled magnetic steel, the rotor fan and the rotor central axis; the stator comprises a stator core, a coil and a stator bracket, wherein each stator tooth of the stator core is a straight slot winding, each stator tooth is wound with a coil, and the stator core is fixedly mounted on the stator bracket.

[0005] Furthermore, the stator bracket is connected to the rotor central axis front and rear through interference fit of a front bearing and a rear bearing, and is fixed by a rotor housing flange.

[0006] Furthermore, the end of the rotor central axis also has a mounting bushing.

[0007] Furthermore, it also includes a controller module, which includes controller electronic devices, a controller housing and a controller wiring port; the controller housing is fixedly installed at one end of the rotor housing, the controller electronic devices are installed in the controller housing, and the controller wiring port is installed on the controller housing for leading out the wiring of the controller electronic devices. The controller module is used to control the operation of the motor device.

[0008] Furthermore, the angled magnetic steel is a whole piece of magnetic steel.

[0009] Furthermore, the angled magnetic steel includes an upper angled magnetic steel and a lower angled magnetic steel, and the upper angled magnetic steel and the lower angled magnetic steel are fixedly connected.

[0010] Furthermore, the upper beveled magnetic steel and the lower beveled magnetic steel are glue-connected.

[0011] Furthermore, the angled magnetic steel includes an upper angled magnetic steel, a middle angled magnetic steel and a lower angled magnetic steel, and the upper angled magnetic steel, the middle angled magnetic steel and the lower angled magnetic steel are fixedly connected.

[0012] Furthermore, the upper bevel magnetic steel, the middle bevel magnetic steel and the lower bevel magnetic steel are glued and connected.

[0013] In the embodiment of the present invention, a high-efficiency motor device with angled magnetic steel is provided. The combination of the outer rotor angled magnetic steel and the inner stator straight slot winding has the same function as the combination of the outer rotor right-angled magnetic steel and the inner stator angled slot winding. However, the production efficiency of the stator straight slot winding is improved, the slot filling rate is improved, and the motor efficiency is improved, so that the overall cost of the motor is reduced and the cost performance is improved. The cost of the angled magnetic steel is only slightly increased when the mold is opened.

[0014] Beneficial effects of the invention: The invention can effectively reduce the amplitude of harmonics and reduce motor vibration noise by using the matching technology of straight slot stator and bevel magnetic steel rotor. Compared with the traditional matching technology of bevel slot stator and right-angle magnetic steel, the cost of winding equipment can be reduced by 20%, the winding efficiency can be increased by 30%, the slot fill rate can be increased by 5-10%, and the motor efficiency can be increased by 2%. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a conventional skewed slot stator core in the prior art; Figure 2 It is a schematic diagram of the structure of an outer rotor with angled magnetic steel and a straight slot stator according to an embodiment of the present invention; Figure 3 is a schematic diagram of a high-efficiency motor structure according to an embodiment of the present invention; Figure 4 is a schematic diagram of a two-section angled magnetic steel according to an embodiment of the present invention; Figure 5 It is a schematic diagram of a three-section angled magnetic steel according to an embodiment of the present invention.

[0016] In the figure, 1. rotor housing; 2. bevel magnet; 201. upper bevel magnet; 202. middle bevel magnet; 203. lower bevel magnet; 3. rotor housing flange; 4. stator winding; 5. stator core; 6. stator bracket; 7. rotor fan; 8. rotor center axis; 9. mounting bushing; 10. front bearing; 11. rear bearing; 12. controller electronic components; 13. controller housing; 14. controller wiring port. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and technical effect of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0018] like Figure 1 As shown, the conventional skewed slot core is tilted at a certain angle to the axis in order to reduce harmonics and noise. However, it also makes winding difficult, reduces production efficiency, reduces slot fill rate, and increases production equipment costs.

[0019] like Figure 2 As shown, a high-efficiency motor device with angled magnetic steel according to an embodiment of the present invention comprises a rotor and a stator, wherein the rotor comprises a rotor housing 1, an angled magnetic steel 2, a rotor fan 7 and a rotor central axis 8, wherein the rotor fan 7 and the angled magnetic steel 2 are fixedly mounted on the rotor central axis 8, and the rotor housing 1 is wrapped around the angled magnetic steel 2, the rotor fan 7 and the rotor central axis 8. The stator comprises a stator core 5, a coil 4 and a stator bracket 6, wherein each stator tooth of the stator core 5 is a straight slot winding, each stator tooth is wound with a coil 4, and the stator core 5 is fixedly mounted on the stator bracket 6.

[0020] like Figure 3 As shown, the stator support 6 is connected to the rotor central shaft 8 by interference fit through the front bearing 10 and the rear bearing 11, and is fixed by the rotor housing flange 3. The end of the rotor central shaft 8 is also provided with a mounting bushing 9.

[0021] It also includes a controller module, which includes a controller electronic device 12, a controller housing 13 and a controller wiring port 14; the controller housing 13 is fixedly mounted at one end of the rotor housing 1, the controller electronic device 12 is mounted in the controller housing 13, and the controller wiring port 14 is mounted on the controller housing 13 for leading out the wiring of the controller electronic device 12. The controller module is used to control the operation of the motor device.

[0022] like Figure 4 As shown, the angled magnetic steel 2 can be a whole magnetic steel, or can be composed of an upper angled magnetic steel 201 and a lower angled magnetic steel 203. The upper angled magnetic steel 201 and the lower angled magnetic steel 202 are formed by bonding, but are not limited to bonding.

[0023] like Figure 5 As shown, the angled magnetic steel 2 can also be composed of an upper angled magnetic steel 201, a middle angled magnetic steel 202 and a lower angled magnetic steel 203. The upper angled magnetic steel 201, the middle angled magnetic steel 202 and the lower angled magnetic steel 203 are formed by bonding, but are not limited to bonding.

[0024] The above is only a preferred implementation case of the present invention and does not limit the present invention in any form. Although the implementation process of the present invention is described in detail above, for those familiar with the art, they can still modify the technical solutions recorded in the above examples, or replace some of the technical features therein with equivalents. All modifications, equivalent replacements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-efficiency motor device with angled magnetic steel, comprising a rotor and a stator, characterized in that: The rotor comprises a rotor housing (1), an angled magnetic steel (2), a rotor fan (7) and a rotor central shaft (8); the rotor fan (7) and the angled magnetic steel (2) are fixedly mounted on the rotor central shaft (8); the rotor housing (1) is wrapped around the angled magnetic steel (2), the rotor fan (7) and the rotor central shaft (8); the stator comprises a stator core (5), a coil and a stator bracket (6); each stator tooth of the stator core (5) is a straight slot winding, each stator tooth is wound with a coil, and the stator core (5) is fixedly mounted on the stator bracket (6).

2. The high-efficiency motor device with angled magnetic steel according to claim 1, characterized in that: The stator bracket (6) is connected to the rotor central axis (8) front and rear through an interference fit of a front bearing (10) and a rear bearing (11), and is fixed through a rotor housing flange (3).

3. The high-efficiency motor device with angled magnetic steel according to claim 1, characterized in that: The end of the rotor central shaft (8) is also provided with a mounting bushing (9).

4. The high-efficiency motor device with angled magnetic steel according to claim 1, characterized in that: The invention also comprises a controller module, the controller module comprising a controller electronic device (12), a controller housing (13) and a controller wiring port (14); the controller housing (13) is fixedly mounted on one end of the rotor housing (1), the controller electronic device (12) is mounted in the controller housing (13), the controller wiring port (14) is mounted on the controller housing (13) and is used to lead out wiring of the controller electronic device (12); the controller module is used to control the operation of the motor device.

5. The high-efficiency motor device with angled magnetic steel according to claim 1, characterized in that: The angled magnetic steel (2) is a whole piece of magnetic steel.

6. The high-efficiency motor device with angled magnetic steel according to claim 1, characterized in that: The angled magnetic steel (2) comprises an upper angled magnetic steel (201) and a lower angled magnetic steel (203), and the upper angled magnetic steel (201) and the lower angled magnetic steel (203) are fixedly connected.

7. The high-efficiency motor device with angled magnetic steel according to claim 6, characterized in that: The upper bevel magnetic steel (201) and the lower bevel magnetic steel (203) are glue-connected.

8. The high-efficiency motor device with angled magnetic steel according to claim 1, characterized in that: The angled magnetic steel (2) comprises an upper angled magnetic steel (201), a middle angled magnetic steel (202) and a lower angled magnetic steel (203); the upper angled magnetic steel (201), the middle angled magnetic steel (202) and the lower angled magnetic steel (203) are fixedly connected.

9. The high-efficiency motor device with angled magnetic steel according to claim 8, characterized in that: The upper bevel magnetic steel (201), the middle bevel magnetic steel (202) and the lower bevel magnetic steel (203) are glue-connected.

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