A high-speed motor structure

Abstract

The utility model relates to the technical field of electric motors, and discloses a high-speed motor structure, comprising a shell and a rotating shaft hinged on the shell, a stator is arranged in the shell, a rotor is arranged on the rotating shaft, a sound insulation and cooling mechanism capable of reducing rotor noise and stator temperature at the same time is arranged in the shell, the sound insulation and heat dissipation mechanism comprises a stator mounting component arranged in the shell for mounting the stator and wrapping the stator and the rotor, a sound insulation chamber arranged in the stator mounting component, and a sound insulation and cooling medium filled and arranged in the sound insulation chamber, the sound insulation and cooling mechanism also comprises a cooling component arranged on the stator mounting part for cooling the sound insulation and cooling medium when the motor is running, and the high-speed motor can effectively reduce the noise generated during operation.

Description

Technical Field

[0001] The utility model relates to the technical field of electric motors, in particular to a high-speed motor structure. Background Art

[0002] A Chinese patent with announcement number CN215378589U discloses a high-speed motor, which includes a housing with end covers at both ends of the housing. The motor also includes a stator fixed in the housing and a main shaft hinged to the end covers through bearings, a rotor is arranged on the main shaft, the stator includes a stator core and a coil rapped on the stator core, and a fan for heat dissipation is also arranged on the main shaft near the end covers.

[0003] The above structure is a relatively common motor structure. When the motor is running, the coil is energized and the electromagnetic effect is generated by the magnet on the rotor to drive the shaft to rotate. During this process, the temperature of the coil will increase. At this time, the fan can discharge the heat on the stator to the outside of the casing. However, the rotation of the rotor and the fan will generate noise. The noise basically comes from the electromagnetic noise generated between the stator and the rotor and the noise generated by the friction and collision between the rotor or the fan and the air. Especially for high-speed motors, since the main shaft speed is very high, the noise generated by the rotor and the fan will be very loud, and the casing and end cover in the above scheme can only filter out a small part of the noise, resulting in a lot of noise when the motor is in use. Therefore, the noise reduction effect of existing high-speed motors is poor. Utility Model Content

[0004] In view of the shortcoming that the existing high-speed motors have a poor noise isolation effect, the purpose of the utility model is to provide a high-speed motor structure that can effectively reduce noise.

[0005] In order to solve the above technical problems, the utility model is solved by the following technical solutions:

[0006] A high-speed motor structure includes a shell and a rotating shaft hinged on the shell, a stator is arranged in the shell, a rotor is arranged on the rotating shaft, a sound insulation and cooling mechanism is arranged in the shell, which can reduce the rotor noise and the stator temperature at the same time, the sound insulation and heat dissipation mechanism includes a stator mounting component arranged in the shell for mounting the stator and wrapping the stator and the rotor, a sound insulation chamber arranged in the stator mounting component and a sound insulation and cooling medium filled in the sound insulation chamber, and the sound insulation and cooling mechanism also includes a cooling component arranged on the stator mounting component for cooling the sound insulation and cooling medium when the motor is running.

[0007] By adopting the above scheme, the stator mounting component can wrap the stator and rotor from the outside, and the sound insulation and cooling medium filled in the sound insulation chamber can reduce vibration and absorb sound waves, which can greatly reduce the noise generated when the rotor rotates, and effectively improve the sound insulation effect of the high-speed motor; when the coil heats up, the sound insulation and cooling medium can absorb and share part of the heat generated by the coil, but the heat cannot be discharged by relying solely on the sound insulation and cooling medium. In order to avoid the above situation, the cooling component in this scheme can effectively reduce the temperature of the sound insulation and cooling medium, which can ensure that the coil can continue to reduce the temperature when the motor is running. Compared with the prior art, this scheme eliminates the method of cooling by fan, thereby reducing the total noise. Combined with the above-mentioned sound insulation effect, it can greatly reduce the noise generated when the high-speed motor is running.

[0008] Preferably, the stator mounting component includes a mounting sleeve fixedly arranged in the shell, an end cover integrally arranged at one end of the mounting sleeve, and a sealing assembly arranged at the other end of the mounting sleeve for preventing the sound insulation and cooling medium from leaking out of the sound insulation chamber. The sealing assembly is detachably connected to the mounting sleeve, and the sound insulation chamber is opened around the axis of the mounting sleeve in the mounting sleeve and the end cover, and the rotating shaft and the rotor are inserted into the mounting sleeve.

[0009] Preferably, the sound insulation and cooling medium includes electronic potting glue, and the stator is arranged in a sound insulation chamber.

[0010] By adopting the above scheme, the electronic potting glue has good insulation, thermal conductivity, heat resistance, shockproof and other properties after curing, and has good sound insulation and thermal conductivity. However, if the stator and the sound insulation and cooling medium are set separately, the efficiency of heat conduction will be reduced, and the volume of the stator mounting sleeve will increase. Therefore, in this scheme, the stator is sealed in the sound insulation chamber with electronic potting glue so that the sound insulation and cooling medium is in direct contact with the coil. The thermal conductivity effect is optimized while ensuring the sound insulation effect, and the volume of the stator mounting sleeve is reduced. The good insulation performance of the electronic potting glue is used to reduce the possibility of short circuit after coil aging; the electronic potting glue is in liquid state before curing, has fluidity, and can be smoothly filled into the interior of the sound insulation chamber, which is convenient to fill.

[0011] Preferably, the cooling component includes a semiconductor refrigeration plate capable of conducting heat in the sound insulation and cooling medium to the outside of the mounting sleeve and a heat sink for cooling the semiconductor refrigeration plate. A mounting structure for mounting the cooling component is provided on the outer surface of the mounting sleeve. Several groups of cooling components and mounting structures are circumferentially spaced around the outer wall of the stator mounting sleeve.

[0012] Preferably, the semiconductor refrigeration plate includes a cooling surface and a heating surface, the mounting structure includes a mounting groove arranged on the outer surface of the mounting sleeve, the semiconductor refrigeration plate is embedded in the mounting groove with the cooling surface facing the mounting sleeve, and the heat sink is arranged on the heating surface.

[0013] By adopting the above scheme, the semiconductor refrigeration plate can continuously transfer the heat from the cooling surface to the heating surface after being powered on, so that the temperature of the cooling surface drops and the temperature of the heating surface increases. In this scheme, the heat on the heating surface is continuously discharged with the help of the heat sink, so that the refrigeration can continue to cool, thereby achieving the effect of continuous heat dissipation of the sound insulation and cooling medium.

[0014] Preferably, thermal conductive paint is applied between the heat sink and the heating surface, and between the mounting groove and the cooling surface.

[0015] By adopting the above scheme, the thermal conductive coating can increase the heat conduction speed between the sound insulation and cooling medium and the semiconductor refrigeration sheet, thereby accelerating the heat dissipation speed of the coil.

[0016] Preferably, the shell is provided with a plurality of heat dissipation gaps for the heat sink to discharge heat.

[0017] By adopting the above solution, the heat dissipation gap can speed up the air circulation between the heat sink and the external environment, speed up the heat dissipation speed of the heat sink and thus speed up the heat dissipation speed of the coil.

[0018] Preferably, the sealing assembly includes a sealing cover, which is connected to the mounting sleeve by a fastener, the fastener includes a screw, the sealing cover is provided with a through hole for the fastener to pass through, the end surface of the mounting sleeve is provided with a threaded hole that cooperates with the fastener, and the sealing cover is provided with a seal that isolates the sound insulation chamber from the outside world.

[0019] Preferably, the seal includes an O-ring, and the sealing cover is provided with an annular groove for placing the O-ring, two annular grooves are concentrically arranged, and the opening of the sound insulation chamber is located between the two annular grooves. After the sealing cover is connected to the mounting sleeve, the O-ring abuts against the end face of the mounting sleeve for sealing.

[0020] With the above solution, the fluidity of the electronic potting glue before curing is better. Before it is completely cured, the motor assembly may fall over, which may cause the electronic potting glue to flow onto the shaft or rotor, affecting the normal use of these parts. In this solution, after the sealing cover is fixed, the O-ring can isolate the soundproof chamber from other chambers to avoid the above situation.

[0021] The utility model has significant technical effects due to the adoption of the above technical scheme: the stator mounting component can wrap the stator and the rotor from the outside, and the sound insulation and cooling medium filled in the sound insulation chamber can reduce vibration and absorb sound waves, which can greatly reduce the noise generated when the rotor rotates, and effectively improve the sound insulation effect of the high-speed motor; the cooling component in this scheme can effectively reduce the temperature of the sound insulation and cooling medium, which can ensure that the coil can continue to reduce the temperature when the motor is running. Compared with the prior art, this scheme omits the method of cooling by a fan, thereby reducing the total amount of noise. Combined with the above-mentioned sound insulation effect, it can greatly reduce the noise generated when the high-speed motor is running. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the external structure of a high-speed motor in this embodiment;

[0023] Figure 2 This is a schematic diagram of the structural disassembly of a high-speed motor in this embodiment;

[0024] Figure 3 yes Figure 2 A partial enlarged view of A;

[0025] Figure 4 This is a schematic diagram of the structural disassembly of a high-speed motor in this embodiment;

[0026] Figure 5 yes Figure 4 A partial enlarged view of B;

[0027] Figure 6 yes Figure 4 A partial enlarged view of C in FIG.

[0028] Figure 7 is a schematic diagram of a stator mounting structure in a high-speed motor of this embodiment;

[0029] Figure 8 yes Figure 7 A partial enlarged view of D in FIG.

[0030] Fig. 9 is a disassembled cross-sectional view of a stator mounting structure in a high-speed motor of this embodiment;

[0031] Fig.10 yes Fig. 9 A partial enlarged view of E in FIG.

[0032] Fig.11 is a cross-sectional view of a stator mounting structure in a high-speed motor of this embodiment;

[0033] Fig.12 yes Fig.11 A partial enlarged view of F.

[0034] The names of the parts indicated by the numerical labels in the above drawings are as follows: 1. Shell; 101. Front shell; 102. Rear shell; 103. Controller protective shell; 2. Rotating shaft; 201. Spline shaft head; 3. Stator; 4. Rotor; 5. Sound insulation chamber; 6. Mounting sleeve; 7. End cover; 8. Semiconductor cooling plate; 9. Heat sink; 10. Mounting groove; 11. Heat dissipation gap; 12. Sealing cover; 13. Fastener; 14. Through hole; 15. Threaded hole; 16. O-ring; 17. Ring groove. DETAILED DESCRIPTION

[0035] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0036] Example

[0037] A high-speed motor structure, according to Figure 1 and Figure 2 As shown, it includes a shell 1, which includes a front shell 101 and a rear shell 102 that are connected and fixed to each other. A controller protection shell 103 is also provided at the rear end of the rear shell 102. A rotating shaft 2 is provided on the shell 1, and the end of the rotating shaft 2 is a spline shaft head 201. A rotor 4 is provided on the rotating shaft 2. A stator 3 is provided in the shell 1 to cooperate with the rotor 4. The above is the prior art.

[0038] The improvement of this embodiment is that a sound insulation and cooling mechanism capable of reducing the noise of the rotor 4 and the temperature of the stator 3 is provided in the housing 1. The sound insulation and heat dissipation mechanism includes a stator 3 mounting component provided in the housing 1 for mounting the stator 3 and wrapping the stator 3 and the rotor 4. Figure 2 to Figure 5 As shown, the stator 3 mounting component includes a mounting sleeve 6 fixedly arranged in the housing 1, the rotating shaft 2 and the rotor 4 are inserted into the mounting sleeve 6, and an end cover 7 is integrally arranged at one end of the mounting sleeve 6. Figure 3 , Fig.10 or Fig.12 As shown, a soundproof chamber 5 is opened around the axis of the mounting sleeve 6 inside the mounting sleeve 6 and the end cover 7, and the soundproof chamber 5 is filled with a soundproof and cooling medium, and the soundproof and cooling medium is an electronic potting glue. There are many types of electronic potting glue. In this embodiment, a thermal conductive potting glue can be selected, and the stator 3 is arranged in the soundproof chamber 5.

[0039] The stator 3 mounting component also includes a sealing assembly arranged at one end of the mounting sleeve 6 away from the end cover 7. Figure 6 to Figure 8 As shown, the sealing assembly includes a sealing cover 12, and the sealing cover 12 is connected to the mounting sleeve 6 by a fastener 13, and the fastener 13 includes a screw. The sealing cover 12 is provided with a through hole 14 for the fastener 13 to pass through, and the end surface of the mounting sleeve 6 is provided with a threaded hole 15 that cooperates with the fastener 13. The sealing cover 12 is provided with a seal that isolates the soundproof chamber 5 from the outside. Figure 6 As shown, the seal includes an O-ring 16, and an annular groove 17 for placing the O-ring 16 is opened on the sealing cover 12. There are two concentric annular grooves 17, and the opening of the sound insulation chamber 5 is located between the two annular grooves 17. After the sealing cover 12 is connected to the mounting sleeve 6, the O-ring 16 abuts against the end face of the mounting sleeve 6 for sealing.

[0040] The stator 3 mounting component is provided with a cooling component for cooling the sound insulation and cooling medium when the motor is running. Figure 3 or Figure 5As shown, the cooling component includes a semiconductor refrigeration sheet 8 capable of conducting the heat in the sound insulation and cooling medium to the outside of the mounting sleeve 6. The semiconductor refrigeration sheet 8 includes a cooling surface and a heating surface. The outer surface of the mounting sleeve 6 is provided with a mounting groove 10 for mounting the cooling component. The semiconductor refrigeration sheet 8 is embedded in the mounting groove 10 with the cooling surface facing the mounting sleeve 6. A thermal conductive coating is applied between the mounting groove 10 and the cooling surface. The cooling component also includes a heat sink 9 for cooling the semiconductor refrigeration sheet 8. The heat sink 9 is arranged on the heating surface. Figure 1 As shown, the housing 1 is provided with a plurality of heat dissipation gaps 11 for the heat sink 9 to discharge heat, and a heat conductive coating is also applied between the heat sink 9 and the heating surface. In this embodiment, the heat conductive coating is silicone grease; Figure 3 As shown, several groups of cooling components and mounting structures are arranged at intervals around the outer wall of the stator 3 mounting sleeve 6, and the semiconductor cooling plates 8 are electrically connected in series.

[0041] Combined with the above structure, reference Figures 1 to 12 It can be seen that the sound insulation and cooling medium filled in the stator 3 mounting component of a high-speed motor structure in this embodiment can reduce vibration and absorb sound waves, and can greatly reduce the noise generated when the rotor 4 rotates, effectively improving the sound insulation effect of the high-speed motor;

[0042] When the coil heats up, the sound insulation and cooling medium can absorb and share part of the heat generated by the coil, and the cooling component can effectively reduce the temperature of the sound insulation and cooling medium, which can ensure that the coil can continue to reduce its temperature when the motor is running. Compared with the prior art, this solution eliminates the need for fan cooling, thereby reducing the total amount of noise. Combined with the above-mentioned sound insulation effect, it can greatly reduce the noise generated when the high-speed motor is running.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A high-speed motor structure, comprising a housing (1) and a rotating shaft (2) hinged to the housing (1), a stator (3) being arranged in the housing (1), and a rotor (4) being arranged on the rotating shaft (2), characterized in that: A sound insulation and cooling mechanism capable of reducing the noise of a rotor (4) and the temperature of a stator (3) is arranged in the housing (1). The sound insulation and cooling mechanism comprises a stator (3) mounting component arranged in the housing (1) for mounting the stator (3) and wrapping the stator (3) and the rotor (4), a sound insulation chamber (5) arranged in the stator (3) mounting component, and a sound insulation and cooling medium filled in the sound insulation chamber (5). The sound insulation and cooling mechanism also comprises a cooling component arranged on the stator (3) mounting component for cooling the sound insulation and cooling medium when the motor is running.

2. A high-speed motor structure according to claim 1, characterized in that: The stator (3) mounting component comprises a mounting sleeve (6) fixedly arranged in the housing (1), an end cover (7) integrally arranged at one end of the mounting sleeve (6), and a sealing component arranged at the other end of the mounting sleeve (6) for preventing the sound insulation and cooling medium from leaking out of the sound insulation chamber (5); the sealing component is detachably connected to the mounting sleeve (6); the sound insulation chamber (5) is opened around the axis of the mounting sleeve (6) in the mounting sleeve (6) and the end cover (7); and the rotating shaft (2) and the rotor (4) are inserted into the mounting sleeve (6).

3. A high-speed motor structure according to claim 1, characterized in that: The sound insulation and cooling medium comprises electronic potting glue, and the stator (3) is arranged in the sound insulation chamber (5).

4. A high-speed motor structure according to claim 2, characterized in that: The cooling component comprises a semiconductor refrigeration plate (8) capable of conducting heat in a sound-insulating and cooling medium to the outside of the mounting sleeve (6) and a heat sink (9) for cooling the semiconductor refrigeration plate (8). An installation structure for installing the cooling component is provided on the outer surface of the mounting sleeve (6). The cooling component and the installation structure are arranged in a plurality of groups at intervals in the circumferential direction around the outer wall of the stator (3) mounting sleeve (6).

5. A high-speed motor structure according to claim 4, characterized in that: The semiconductor refrigeration sheet (8) comprises a cooling surface and a heating surface, the mounting structure comprises a mounting groove (10) arranged on the outer surface of the mounting sleeve (6), the semiconductor refrigeration sheet (8) is embedded in the mounting groove (10) with the cooling surface facing the mounting sleeve (6), and the heat sink (9) is arranged on the heating surface.

6. A high-speed motor structure according to claim 5, characterized in that: Heat-conducting paint is applied between the heat sink (9) and the heating surface, and between the mounting groove (10) and the cooling surface.

7. A high-speed motor structure according to claim 5, characterized in that: The housing (1) is provided with a plurality of heat dissipation gaps (11) for the heat dissipation fins (9) to discharge heat.

8. A high-speed motor structure according to claim 2, characterized in that: The sealing assembly comprises a sealing cover (12), the sealing cover (12) and the mounting sleeve (6) are connected via a fastener (13), the fastener (13) comprises a screw, the sealing cover (12) is provided with a through hole (14) for the fastener (13) to pass through, the end surface of the mounting sleeve (6) is provided with a threaded hole (15) matching with the fastener (13), and the sealing cover (12) is provided with a sealing member for isolating the soundproof chamber (5) from the outside.

9. A high-speed motor structure according to claim 8, characterized in that: The sealing member comprises an O-ring (16). The sealing cover (12) is provided with an annular groove (17) for accommodating the O-ring (16). Two annular grooves (17) are concentrically arranged. The opening of the soundproof chamber (5) is located between the two annular grooves (17). After the sealing cover (12) is connected to the mounting sleeve (6), the end faces of the O-ring (16) and the mounting sleeve (6) are abutted and sealed.

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