Energy-saving permanent magnet synchronous motor

Abstract

The utility model discloses an energy -conserving permanent magnet synchronous motor belongs to permanent magnet synchronous motor technical field, the utility model discloses a motor body and install power spindle in the middle part of motor body, install transmission bearing on power spindle, and transmission bearing is located inside the protective cover, the protective cover is fixed on the motor body, the motor body's periphery is fixed with heat dissipation fin, the outside of transmission bearing is equipped with the heat conduction ring, and the middle part of heat conduction ring is installed with heat absorption rod, the lower extreme of heat absorption rod is inducted to the inside of transmission bearing, and the upper end of heat absorption rod is fixed with the oil storage column, the upper end of oil storage column is provided with the filling port, the inside fixed of heat absorption rod has the inner sleeve ring. This energy -conserving permanent magnet synchronous motor can realize automatic lubrication to bearing, reduce the resistance when bearing operation, save the energy consumption when motor operation through the temperature change of frictional resistance when using.

Description

Technical Field

[0001] This utility model relates to the field of permanent magnet synchronous motor technology, specifically an energy-saving permanent magnet synchronous motor. Background Technology

[0002] A permanent magnet synchronous motor is a synchronous motor that uses permanent magnets to generate a magnetic field. The speed of its rotor is consistent with the frequency of the current in the stator winding. A permanent magnet synchronous motor consists of components such as a stator, a rotor, and end covers.

[0003] For example, a permanent magnet synchronous motor with announcement number CN208571849U includes a stator, rotor, impeller, upper end cover, lower end cover, and housing. The permanent magnet synchronous motor further includes: a fan shroud disposed outside the lower end cover and forming an accommodating space with the lower end cover, the accommodating space communicating with the interior of the housing; multiple air ducts respectively disposed outside the housing and communicating with the accommodating space; wherein the housing has a first through hole for communicating the interior of the housing with the air ducts; the impeller is disposed within the accommodating space. The above-mentioned prior art has the following technical problems:

[0004] Existing permanent magnet synchronous motors transmit power through bearings during operation. However, as supporting components, bearings are prone to significant wear after prolonged rotation. When the bearing frictional resistance is high, the energy loss during motor shaft rotation increases, thereby reducing the motor's operating efficiency.

[0005] Therefore, we propose an energy-saving permanent magnet synchronous motor to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide an energy-saving permanent magnet synchronous motor to solve the problem mentioned in the background art: existing permanent magnet synchronous motors on the market transmit power through bearings. However, as a supporting component, the bearings are prone to significant wear after prolonged rotation. When the bearing frictional resistance is high, the energy loss of the motor spindle increases during rotation, thereby reducing the operating efficiency of the motor.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an energy-saving permanent magnet synchronous motor, comprising a motor body and a power spindle installed in the middle of the motor body, a transmission bearing mounted on the power spindle, the transmission bearing being located inside a protective cover, the protective cover being fixed to the motor body, heat dissipation fins being fixed circumferentially on the motor body, a heat-conducting ring being sleeved on the outer side of the transmission bearing, and a heat-absorbing rod being installed in the middle of the heat-conducting ring, the lower end of the heat-absorbing rod extending into the interior of the transmission bearing, and an oil reservoir being fixed at the upper end of the heat-absorbing rod, with a filling port provided at the upper end of the oil reservoir, an inner ring being fixed inside the heat-absorbing rod, and a sealing plug being provided in the inner ring, the sealing plug being connected to the bottom of the inner ring via a shape memory metal, an oil leakage hole being provided circumferentially on the inner ring, and a guide groove being provided at the bottom of the heat-absorbing rod.

[0008] Preferably, the heat dissipation fins are evenly distributed around the circumference of the motor body, and the longitudinal section of each heat dissipation fin is set as a rectangular structure.

[0009] By adopting the above technical solution, the heat dissipation fins are evenly distributed around the motor body, thereby absorbing the working heat of the motor body.

[0010] Preferably, both the heat-conducting ring and the heat-absorbing rod are made of heat-conducting metal, and the inner ring of the heat-conducting ring is in close contact with the outer ring of the transmission bearing.

[0011] By adopting the above technical solution, when the transmission bearing wears and generates heat, the heat of the transmission bearing can be absorbed by the heat-conducting ring.

[0012] Preferably, the heat-absorbing rod and the oil storage column are internally connected, and multiple guide grooves are evenly distributed at the bottom of the heat-absorbing rod, with an exhaust hole opened at the middle of the lower end of the heat-absorbing rod.

[0013] By adopting the above technical solution, the oil inside the oil storage column is facilitated to flow into the bearing through the guide groove at the bottom of the inclined rod by the interconnection between the heat absorption rod and the oil storage column.

[0014] Preferably, the outer wall of the sealing plug and the inner wall of the inner ring are fitted together, and the inner ring is provided with multiple oil leakage holes in the circumferential direction.

[0015] By adopting the above technical solution, the sealing plug can be used to easily seal or open the oil leakage hole on the inner ring.

[0016] Preferably, a power block is fixed on the power spindle, and an adjustment lever is provided on the side of the power block. The rotating shaft of the adjustment lever is installed through the oil reservoir, and a scroll spring providing a reset force is installed on the outside of the rotating shaft of the adjustment lever. A mixing kit for agitating the oil inside the oil reservoir is installed on the rotating shaft of the adjustment lever.

[0017] By adopting the above technical solution, the power block can push the adjustment lever as the power spindle rotates, so that the adjustment lever can rotate on the oil reservoir.

[0018] Preferably, multiple power blocks are evenly distributed at equal angles along the circumference of the power main shaft.

[0019] By adopting the above technical solution, the rotation of the power spindle can make the power blocks rotate synchronously, and the rotation of multiple power blocks can be used to intermittently push the adjustment lever.

[0020] Compared with the prior art, the beneficial effects of this utility model are: the energy-saving permanent magnet synchronous motor can automatically lubricate the bearings through the temperature change caused by frictional resistance during use, thereby reducing the resistance of the bearings during operation and saving energy consumption during motor operation.

[0021] 1. It is equipped with heat dissipation fins. The heat dissipation fins are evenly distributed around the motor body to absorb the heat generated by the motor body during operation. The heat exchange is achieved by the contact between the heat dissipation fins and the outside air, thereby achieving the purpose of cooling the motor body.

[0022] 2. It is equipped with shape memory metal. When the heat conduction ring and heat absorption rod absorb the heat of the transmission bearing, the shape memory metal can shrink, thereby pulling the sealing plug downward. After the sealing plug moves downward, it can release the seal on the oil leakage hole, thus facilitating the oil inside the oil reservoir to enter the transmission bearing, realizing automatic lubrication of the transmission bearing, reducing the resistance of the transmission bearing during operation, and saving energy consumption when the motor body is running.

[0023] 3. A power block is provided. When the power block rotates with the main shaft, its contact and disengagement with the adjustment lever enables the adjustment lever to drive the mixing kit to rotate reciprocally. The reciprocating rotation of the mixing kit can agitate the oil inside the oil reservoir, preventing the oil inside the oil reservoir from separating due to prolonged standing. Attached Figure Description

[0024] Figure 1 This is a frontal three-dimensional structural diagram of the present utility model;

[0025] Figure 2 This is a schematic diagram of the protective cover and oil storage column structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the transmission bearing and heat-conducting ring structure of this utility model;

[0027] Figure 4 This is a schematic diagram of the heat-absorbing rod and the flow guide groove of this utility model;

[0028] Figure 5 This is a schematic diagram of the oil storage column and mixing kit of this utility model;

[0029] Figure 6 This utility model Figure 5 Enlarged structural diagram at point A in the middle.

[0030] In the diagram: 1. Motor body; 2. Power spindle; 3. Transmission bearing; 4. Protective cover; 5. Heat dissipation fins; 6. Heat conduction ring; 7. Heat absorption rod; 8. Oil reservoir; 9. Filling port; 10. Inner ring; 11. Sealing plug; 12. Shape memory metal; 13. Oil leakage hole; 14. Guide groove; 15. Power block; 16. Adjustment lever; 17. Mixing kit. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Example 1: Please refer to Figures 1-6Existing permanent magnet synchronous motors transmit power through bearings during operation. However, as supporting components, bearings are prone to significant wear after prolonged rotation. Increased bearing friction leads to increased energy loss during motor shaft rotation, thus reducing motor efficiency. To address this technical problem, this embodiment discloses the following: an energy-saving permanent magnet synchronous motor, comprising a motor body 1 and a power shaft 2 mounted in the middle of the motor body 1. A transmission bearing 3 is mounted on the power shaft 2 and is located inside a protective cover 4, which is fixed to the motor body 1. Heat dissipation fins 5 are circumferentially fixed to the motor body 1. A heat-conducting ring 6 is sleeved on the outer side of the transmission bearing 3, and a heat-absorbing rod 7 is mounted in the middle of the heat-conducting ring 6. The lower end of the heat-absorbing rod 7 extends into the interior of the transmission bearing 3, and an oil reservoir is fixed to the upper end of the heat-absorbing rod 7. 8. A filling port 9 is provided at the upper end of the oil reservoir 8. An inner ring 10 is fixed inside the heat absorption rod 7, and a sealing plug 11 is provided in the inner ring 10. The sealing plug 11 is connected to the bottom of the inner ring 10 through a shape memory metal 12. An oil leakage hole 13 is provided in the circumference of the inner ring 10, and a guide groove 14 is provided at the bottom of the heat absorption rod 7. Multiple heat dissipation fins 5 are evenly distributed in the circumference of the motor body 1, and the longitudinal section of each heat dissipation fin 5 is set as a rectangular structure. The heat conduction ring 6 and the heat absorption rod 7 are both made of heat conduction metal. The inner ring of the heat conduction ring 6 is in close contact with the outer ring of the transmission bearing 3. The interiors of the heat absorption rod 7 and the oil reservoir 8 are interconnected. Multiple guide grooves 14 are evenly distributed at the bottom of the heat absorption rod 7. An exhaust hole is provided in the middle of the lower end of the heat absorption rod 7. The outer wall of the sealing plug 11 is in close contact with the inner wall of the inner ring 10, and multiple oil leakage holes 13 are provided in the circumference of the inner ring 10.

[0033] When the motor body 1 generates heat during operation, the heat can be absorbed by the heat dissipation fins 5. The heat absorbed by the heat dissipation fins 5 is exchanged with the outside air to achieve the purpose of cooling the motor body 1. When the transmission bearing 3 on the power spindle 2 wears due to long-term operation, the frictional resistance can cause the transmission bearing 3 to heat up. Since the transmission bearing 3 is in close contact with the heat-conducting ring 6, the heat-conducting ring 6 and the heat-absorbing rod 7 absorb the heat of the transmission bearing 3 and transfer the heat to the shape memory metal 12 inside the heat-absorbing rod 7. The shape memory metal 12 shrinks when heated, and the shrinking shape memory metal 12 can pull the sealing plug 11 downward. At this time, after the sealing plug 11 moves downward, it can release the obstruction of the circumferential oil leakage hole 13 of the inner sleeve ring 10. The oil inside the oil reservoir 8 can enter the interior of the transmission bearing 3 through the circumferential oil leakage hole 13 of the inner sleeve ring 10 and the guide groove 14 at the bottom of the heat-absorbing rod 7, thereby achieving automatic lubrication of the transmission bearing 3, reducing the resistance of the transmission bearing 3 during operation, and saving energy consumption when the motor body 1 is running.

[0034] Example 2: The technical content disclosed in this example is a further improvement based on Example 1 above. The following technical content is disclosed in this example: a power block 15 is fixed on the power spindle 2, and an adjustment lever 16 is provided on the side of the power block 15. The rotating shaft of the adjustment lever 16 is installed through the oil reservoir 8, and a spiral spring that provides a reset elastic force is installed on the outside of the rotating shaft of the adjustment lever 16. A mixing kit 17 for agitating the oil inside the oil reservoir 8 is installed on the rotating shaft of the adjustment lever 16. Multiple power blocks 15 are evenly distributed at equal angles along the circumference of the power spindle 2.

[0035] The rotation of the main shaft 2 drives the power block 15 to rotate synchronously. When the power block 15 rotates and comes into contact with the adjusting lever 16, it pushes the adjusting lever 16 to rotate on the oil reservoir 8. When the power block 15 rotates and disengages from the adjusting lever 16, the adjusting lever 16 returns to its original position under the action of the spiral spring. This achieves the reciprocating rotation of the adjusting lever 16. The reciprocating rotation of the adjusting lever 16 allows the mixing kit 17 on it to mix the oil inside the oil reservoir 8, preventing the oil inside the oil reservoir 8 from separating due to long-term standing. This prevents the separated oil from entering the bearing and failing to provide adequate lubrication.

[0036] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An energy-saving permanent magnet synchronous motor, comprising a motor body (1) and a power spindle (2) installed in the middle of the motor body (1), wherein a transmission bearing (3) is installed on the power spindle (2), and the transmission bearing (3) is located inside a protective cover (4), the protective cover (4) being fixed on the motor body (1), characterized in that: The motor body (1) is circumferentially fixed with heat dissipation fins (5), the outer side of the transmission bearing (3) is fitted with a heat conduction ring (6), and a heat absorption rod (7) is installed in the middle of the heat conduction ring (6). The lower end of the heat absorption rod (7) extends into the interior of the transmission bearing (3), and an oil reservoir (8) is fixed at the upper end of the heat absorption rod (7). A filling port (9) is provided at the upper end of the oil reservoir (8). An inner ring (10) is fixed inside the heat absorption rod (7), and a sealing plug (11) is provided in the inner ring (10). The sealing plug (11) is connected to the bottom of the inner ring (10) through a shape memory metal (12). An oil leakage hole (13) is opened circumferentially in the inner ring (10), and a guide groove (14) is opened at the bottom of the heat absorption rod (7).

2. The energy-saving permanent magnet synchronous motor according to claim 1, characterized in that: The heat dissipation fins (5) are evenly distributed around the motor body (1), and each heat dissipation fin (5) has a rectangular cross-section.

3. The energy-saving permanent magnet synchronous motor according to claim 1, characterized in that: Both the heat-conducting ring (6) and the heat-absorbing rod (7) are made of heat-conducting metal, and the inner ring of the heat-conducting ring (6) is in close contact with the outer ring of the transmission bearing (3).

4. The energy-saving permanent magnet synchronous motor according to claim 1, characterized in that: The heat-absorbing rod (7) and the oil storage column (8) are internally connected, and multiple guide grooves (14) are evenly distributed at the bottom of the heat-absorbing rod (7). An exhaust hole is opened at the middle of the lower end of the heat-absorbing rod (7).

5. An energy-saving permanent magnet synchronous motor according to claim 1, characterized in that: The outer wall of the sealing plug (11) and the inner wall of the inner ring (10) are fitted together, and the inner ring (10) has multiple oil leakage holes (13) in the circumferential direction.

6. The energy-saving permanent magnet synchronous motor according to claim 1, characterized in that: A power block (15) is fixed on the power spindle (2), and an adjustment lever (16) is provided on the side of the power block (15). The shaft of the adjustment lever (16) is installed through the oil reservoir (8), and a vortex spring that provides a reset spring force is installed on the outside of the shaft of the adjustment lever (16). A mixing kit (17) for agitating the oil inside the oil reservoir (8) is installed on the shaft of the adjustment lever (16).

7. An energy-saving permanent magnet synchronous motor according to claim 6, characterized in that: The power blocks (15) are evenly distributed at equal angles along the circumference of the power main shaft (2).

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