High-speed permanent magnet synchronous motor

Abstract

The invention discloses a high-speed permanent magnet synchronous motor, which belongs to the technical field of motors and comprises a motor main body and a fan cover fixedly mounted at the right end of the motor main body. The automatic opening and closing air inlet mechanism is installed on the fan cover, the automatic opening and closing air inlet mechanism comprises an air inlet grille, a supporting plate and a blocking assembly, and the blocking assembly comprises an air blocking plate, an air inlet groove, a filter screen and a centrifugal opening and closing assembly, in this way, when the motor body is shut down, the air inlet groove in the air blocking plate and the air inlet grille are staggered, and the air inlet grille is completely shielded by the air blocking plate; the problem that a large amount of dust quickly enters and elements in the motor main body are aged due to the completely exposed air inlet grille is avoided, so that the service life of the motor main body is prolonged to a certain extent; when the motor main body is started, the air inlet groove on the choke plate is aligned with the air inlet grille, so that the air inlet amount required by normal heat dissipation of the motor main body is ensured, the opening and closing conditions of the air inlet grille are automatically carried out completely according to the starting of the motor main body, and the whole structure is practical and convenient.

Description

Technical Field

[0001] This invention relates to the field of motor technology, and specifically to a high-speed permanent magnet synchronous motor. Background Technology

[0002] Permanent magnet synchronous motors have advantages such as simple structure, small size, high efficiency, and high power factor, and are widely used.

[0003] Chinese patent application CN118572929A discloses a permanent magnet synchronous motor, including a base. A primary buffer mechanism is located at the bottom of the inner wall of the base, a disassembly mechanism is located at the top of the primary buffer mechanism, a secondary buffer mechanism is located at the bottom of the disassembly mechanism, and the motor body is located at the top of the disassembly mechanism. This invention, by incorporating the disassembly mechanism, converts the rotational motion of the threaded rod into the linear motion of the moving plate when the motor is started. The moving plate can disengage the locking block from the insert block, removing the limiting effect on the insert block and allowing the moving plate to stably move the locking block. At this point, the operator can pull the insert block out of the slot through the motor body, thus disassembling the disassembly mechanism. This achieves good disassembly efficiency while reducing the possibility of screws or bolts corroding and rusting, making it easier for operators to use. However, when the motor is in standby mode, the fully exposed air inlet is prone to dust accumulation, which can age the internal components of the motor. Furthermore, after the motor stops, the motor shaft may continue to rotate due to inertia and cannot accurately stop at the required position.

[0004] Based on this, the present invention designs a high-speed permanent magnet synchronous motor to solve the above problems. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a high-speed permanent magnet synchronous motor.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A high-speed permanent magnet synchronous motor includes a motor body and a fan shroud fixedly installed at the right end of the motor body; The fan cover is equipped with a self-opening and closing air intake mechanism, which includes an air intake grille, a support plate, and a blocking component. The support plate is rotatably connected to the fan cover via a bearing, and the support plate is fixedly connected to the rotating shaft of the motor body. Multiple air intake grilles are evenly spaced in a circular array on the support plate, and multiple blocking components corresponding to the air intake grilles are also installed on the support plate. The blocking assembly includes a wind baffle plate, an air inlet slot, a filter screen, and a centrifugal opening and closing assembly. The centrifugal opening and closing assembly is connected to a support plate, and the moving end of the centrifugal opening and closing assembly is connected to the wind baffle plate. The wind baffle plate has multiple air inlet slots that cooperate with the air inlet grille, and a filter screen is fixedly installed in the air inlet slot.

[0007] Furthermore, the centrifugal opening and closing assembly includes a fixed frame, a first sliding rod, a first spring, and a limiting plate. The fixed frame is fixedly connected to the support plate, the first sliding rod is slidably connected to the fixed frame, the limiting plate is fixedly installed at one end of the first sliding rod near the center of the support plate, the other end of the first sliding rod is fixedly connected to the wind baffle plate, the first spring is sleeved on the outside of the first sliding rod, and the two ends of the first spring are fixedly connected to the wind baffle plate and the fixed frame, respectively.

[0008] Furthermore, a stopping locking mechanism is installed at the left end of the motor body to restrict the rotation shaft of the motor body from continuing to rotate under inertia after the motor body stops.

[0009] Furthermore, the stopping locking mechanism includes a locking platform, a locking plate, a slot, and a magnetic locking assembly. The locking platform is fixedly connected to the rotating shaft of the motor body, and the locking plate is fixedly connected to the left end of the motor body. Multiple slots are evenly spaced along the axial direction of the locking platform on the side of the locking platform. Multiple magnetic locking assemblies corresponding to the slots are installed inside the locking plate.

[0010] Furthermore, the magnetic locking assembly includes a second slide rod, a second spring, a ball bearing, a stop block, and a magnetic drive assembly. A receiving groove is provided inside the locking platform, and the stop block is fixedly connected to the inner wall of the receiving groove. The second slide rod is slidably connected to the stop block for limiting, and a ball bearing is installed at one end of the second slide rod near the locking platform. The second spring is sleeved on the outside of the second slide rod, and both ends of the second spring are fixedly connected to the stop block and the second slide rod, respectively.

[0011] Furthermore, the magnetic locking assembly includes a slanted push block, an electromagnetic block, and a third spring. The slanted push block is slidably connected to the inner wall of the receiving groove, and the inclined surface of the slanted push block is slidably connected to the end of the second slide rod away from the ball. The electromagnetic block is fixedly connected to the locking platform, the slanted push block and the electromagnetic block are magnetically connected, and a third spring is fixedly installed between the slanted push block and the electromagnetic block.

[0012] Furthermore, the electromagnetic block uses a de-energized electromagnet. When the electromagnetic block is de-energized, it will repel the inclined push block and push it away.

[0013] Furthermore, a modular heat dissipation mechanism is installed on the outside of the motor body, which is composed of multiple heat dissipation components distributed circumferentially along the motor body.

[0014] Furthermore, the heat dissipation assembly includes a fixing plate, heat dissipation fins, positioning holes, and positioning blocks. The fixing plate is attached to the outer periphery of the motor body, and multiple heat dissipation fins are fixedly installed on the fixing plate. The outer periphery of the motor body is provided with positioning holes, and positioning blocks that cooperate with the positioning holes are fixedly installed on the fixing plate.

[0015] Furthermore, the heat dissipation fins have a T-shaped cross-section.

[0016] Compared with the prior art, the beneficial effects of this invention are as follows: 1. When the motor body stops, the air inlet slot and air inlet grille on the baffle plate are misaligned, and the air inlet grille is completely blocked by the baffle plate. When the motor body starts, the output shaft of the motor body drives the support plate to rotate smoothly and synchronously under the action of the bearing. During the rotation of the support plate, the baffle plate will move radially along the support plate under the limiting action of the fixed frame and the first sliding rod through centrifugal force until the limiting plate abuts against the fixed frame, so that the air inlet slot and air inlet grille on the baffle plate are aligned, ensuring the air intake required for normal heat dissipation of the motor body. After the motor body stops, the first spring drives the baffle plate to perform a reset movement, so that the air inlet grille is completely blocked by the baffle plate again, avoiding the problem of a large amount of dust entering quickly due to the fully exposed air inlet grille, which would age the internal components of the motor body. This extends the service life of the motor body to a certain extent. Moreover, the opening and closing of the air inlet grille is automatically performed according to the start of the motor body, making the whole structure practical and convenient.

[0017] 2. When the motor body is working, the electromagnetic block loses its magnetism when energized, and the electromagnetic block and the inclined push block move closer to each other; when the motor body stops, the electromagnetic block pushes the inclined push block away, and the inclined push block pushes the second slide rod towards the locking platform until the second slide rod contacts the plane of the inclined push block, so that the locking platform and the locking platform are locked by the cooperation of the slot and the ball, so that the rotating shaft of the motor body can be quickly locked and stopped rotating after the motor body stops, so that the rotating shaft of the motor body can be accurately stopped at the required position.

[0018] 3. It can select different sizes of heat dissipation fins according to the usage scenario of the motor body to meet the various heat dissipation needs of the motor body. When the heat dissipation fins are seriously affected by dust accumulation, the fixing plate and heat dissipation fins can be removed and cleaned in an integrated manner for easy operation. When installing the heat dissipation component, simply insert the positioning block of the fixing plate into the positioning hole of the motor body, and then screw the fastening screw into the positioning hole and the positioning block to achieve quick disassembly and assembly of the heat dissipation component. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0020] Figure 1 This invention provides a three-dimensional representation of a high-speed permanent magnet synchronous motor. Figure 1 ; Figure 2 This is a front view of a high-speed permanent magnet synchronous motor according to the present invention; Figure 3 This invention provides a three-dimensional representation of a high-speed permanent magnet synchronous motor. Figure 2 ; Figure 4 This is a perspective view of the self-opening and closing air inlet mechanism of the present invention; Figure 5 This is a perspective view of the modular heat dissipation mechanism of the present invention; Figure 6 This is a front half-sectional plan view of a high-speed permanent magnet synchronous motor according to the present invention; Figure 7 for Figure 6 Enlarged view of point A in the middle.

[0021] The labels in the diagram represent: 1. Motor body; 2. Fan cover; 3. Self-opening and closing air intake mechanism; 31. Air intake grille; 32. Baffle plate; 33. Air intake slot; 34. Filter screen; 35. Fixing frame; 36. First slide rod; 37. First spring; 38. Limiting plate; 39. Support plate; 4. Stop locking mechanism; 41. Locking platform; 42. Locking platform; 43. Slot; 44. Second slide rod; 45. Second spring; 46. Ball bearing; 47. Stop block; 48. Inclined push block; 49. Electromagnetic block; 410. Third spring; 5. Modular heat dissipation mechanism; 51. Fixing plate; 52. Heat dissipation fins; 53. Positioning insertion hole; 54. Positioning insertion block. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0023] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0024] In some embodiments, please refer to the accompanying drawings. Figures 1-7 A high-speed permanent magnet synchronous motor includes a motor body 1 and a fan cover 2 fixedly installed at the right end of the motor body 1; The fan cover 2 is equipped with a self-opening and closing air intake mechanism 3. The self-opening and closing air intake mechanism 3 includes an air intake grille 31, a support plate 39, and a blocking component. The support plate 39 is rotatably connected to the fan cover 2 through a bearing, and the support plate 39 is fixedly connected to the rotating shaft of the motor body 1. Multiple air intake grilles 31 are evenly spaced in a circular array on the support plate 39, and multiple blocking components corresponding to the air intake grilles 31 are also installed on the support plate 39. The blocking assembly includes a wind baffle plate 32, an air inlet slot 33, a filter screen 34, and a centrifugal opening and closing assembly. The centrifugal opening and closing assembly is connected to the support plate 39, and the moving end of the centrifugal opening and closing assembly is connected to the wind baffle plate 32. The wind baffle plate 32 has multiple air inlet slots 33 that cooperate with the air inlet grille 31. A filter screen 34 is fixedly installed in the air inlet slot 33. The centrifugal opening and closing assembly includes a fixed frame 35, a first slide rod 36, a first spring 37, and a limiting plate 38. The fixed frame 35 is fixedly connected to the support plate 39. The first slide rod 36 is slidably connected to the fixed frame 35. The limiting plate 38 is fixedly installed at one end of the first slide rod 36 near the center of the support plate 39. The other end of the first slide rod 36 is fixedly connected to the wind baffle plate 32. The first spring 37 is sleeved on the outside of the first slide rod 36. The two ends of the first spring 37 are fixedly connected to the wind baffle plate 32 and the fixed frame 35, respectively. In this invention, when the motor body 1 stops, the air inlet slot 33 on the wind baffle 32 is misaligned with the air inlet grille 31, and the air inlet grille 31 is completely blocked by the wind baffle 32. When the motor body 1 starts, the output shaft of the motor body 1 drives the support plate 39 to rotate smoothly and synchronously under the action of the bearing. During the rotation of the support plate 39, the wind baffle 32 will move radially along the support plate 39 under the limiting action of the fixed frame 35 and the first sliding rod 36 through centrifugal force until the limiting plate 38 abuts against the fixed frame 35, so that the air inlet slot 33 on the wind baffle 32... Aligned with the air intake grille 31, it ensures the air intake volume required for normal heat dissipation of the motor body 1. After the motor body 1 stops, the first spring 37 drives the wind baffle 32 to perform a reset movement, so that the air intake grille 31 is completely covered by the wind baffle 32 again. This avoids the problem of a large amount of dust entering quickly due to the fully exposed air intake grille 31, which would age the internal components of the motor body 1. This extends the service life of the motor body 1 to a certain extent. Moreover, the opening and closing of the air intake grille 31 is automatically performed according to the start of the motor body 1, making the whole structure practical and convenient.

[0025] Please see Figure 6 and Figure 7 The left end of the motor body 1 is equipped with a stopping locking mechanism 4 that restricts the rotation shaft of the motor body 1 from continuing to rotate under inertia after the motor body 1 stops. The stopping locking mechanism 4 includes a locking platform 41, a locking platform 42, a slot 43, and a magnetic locking assembly. The locking platform 41 is fixedly connected to the rotating shaft of the motor body 1, and the locking platform 42 is fixedly connected to the left end of the motor body 1. Multiple slots 43 are evenly spaced along the axial direction of the locking platform 41 on the side of the locking platform 41. Multiple magnetic locking assemblies corresponding to the slots 43 are installed in the locking platform 42. The magnetic locking assembly includes a second slide rod 44, a second spring 45, a ball bearing 46, a stop block 47, and a magnetic drive assembly. A receiving groove is provided inside the locking platform 42, and the stop block 47 is fixedly connected to the inner wall of the receiving groove. The second slide rod 44 is slidably connected to the stop block 47, and a ball bearing is installed at one end of the second slide rod 44 near the locking platform 41. The second spring 45 is sleeved on the outside of the second slide rod 44, and both ends of the second spring 45 are fixedly connected to the stop block 47 and the second slide rod 44, respectively. The magnetic locking assembly includes a slanted push block 48, an electromagnetic block 49, and a third spring 410. The slanted push block 48 is slidably connected to the inner wall of the receiving groove, and the inclined surface of the slanted push block 48 is slidably connected to the end of the second slide rod 44 away from the ball 46. The electromagnetic block 49 is fixedly connected to the locking platform 42. The slanted push block 48 and the electromagnetic block 49 are magnetically connected, and the third spring 410 is fixedly installed between the slanted push block 48 and the electromagnetic block 49. In this embodiment, the electromagnetic block 49 is a de-energized electromagnet. When the electromagnetic block 49 is de-energized, it will repel the inclined push block 48 and push the inclined push block 48 away.

[0026] In this invention, when the motor body 1 is working, the electromagnetic block 49 loses its magnetism when energized, and the electromagnetic block 49 and the inclined push block 48 approach each other; when the motor body 1 stops, the electromagnetic block 49 pushes the inclined push block 48 away, and the inclined push block 48 pushes the second slide rod 44 toward the locking platform 41 until the second slide rod 44 contacts the plane of the inclined push block 48, so that the locking platform 41 and the locking platform 42 are locked by the cooperation of the slot 43 and the ball 46, so that the rotating shaft of the motor body 1 can be quickly locked and stopped rotating after the motor body 1 stops, so that the rotating shaft of the motor body 1 can be accurately stopped at the required position.

[0027] A modular heat dissipation mechanism 5 is installed on the outside of the motor body 1. The modular heat dissipation mechanism 5 is composed of multiple heat dissipation components distributed around the circumference of the motor body 1.

[0028] Please see Figure 5 The heat dissipation assembly includes a fixing plate 51, heat dissipation fins 52, positioning holes 53, and positioning blocks 54. The fixing plate 51 is attached to the outer periphery of the motor body 1, and multiple heat dissipation fins 52 are fixedly installed on the fixing plate 51. The outer periphery of the motor body 1 is provided with positioning holes 53, and positioning blocks 54 that cooperate with and are inserted into the positioning holes 53 are fixedly installed on the fixing plate 51. In this embodiment, the heat dissipation fin 52 has a T-shaped cross-section to increase its heat dissipation efficiency.

[0029] In this invention, heat dissipation fins 52 of different sizes can be selected according to the usage scenario of the motor body 1 to meet the various heat dissipation needs of the motor body 1. When the heat dissipation fins 52 are seriously affected by dust accumulation, the fixing plate 51 and the heat dissipation fins 52 can be removed and cleaned in an integrated manner, which is convenient for operation. When installing the heat dissipation component, it is only necessary to insert the positioning plug 54 of the fixing plate 51 into the positioning plug hole 53 of the motor body 1, and then screw the fastening screws into the positioning plug hole 53 and the positioning plug 54 to realize the quick disassembly and assembly of the heat dissipation component.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-speed permanent magnet synchronous motor, comprising a motor body (1) and a fan shroud (2) fixedly installed at the right end of the motor body (1), characterized in that: The wind shroud (2) is equipped with a self-opening and closing air intake mechanism (3). The self-opening and closing air intake mechanism (3) includes an air intake grille (31), a support plate (39), and a blocking component. The support plate (39) is rotatably connected to the wind shroud (2) through a bearing. The support plate (39) is fixedly connected to the rotating shaft of the motor body (1). Multiple air intake grilles (31) are evenly spaced in a circular array on the support plate (39). Multiple blocking components corresponding to the air intake grilles (31) are also installed on the support plate (39). The blocking assembly includes a wind baffle (32), an air inlet slot (33), a filter screen (34), and a centrifugal opening and closing assembly. The centrifugal opening and closing assembly is connected to the support plate (39), and the moving end of the centrifugal opening and closing assembly is connected to the wind baffle (32). The wind baffle (32) has multiple air inlet slots (33) that cooperate with the air inlet grille (31). A filter screen (34) is fixedly installed in the air inlet slot (33).

2. The high-speed permanent magnet synchronous motor according to claim 1, characterized in that, The centrifugal opening and closing assembly includes a fixed frame (35), a first slide rod (36), a first spring (37), and a limiting plate (38). The fixed frame (35) is fixedly connected to the support plate (39). The first slide rod (36) is slidably connected to the fixed frame (35). The limiting plate (38) is fixedly installed at one end of the first slide rod (36) near the center of the support plate (39). The other end of the first slide rod (36) is fixedly connected to the wind baffle plate (32). The first spring (37) is sleeved on the outside of the first slide rod (36). The two ends of the first spring (37) are fixedly connected to the wind baffle plate (32) and the fixed frame (35), respectively.

3. The high-speed permanent magnet synchronous motor according to claim 1, characterized in that, The left end of the motor body (1) is equipped with a stopping locking mechanism (4) that restricts the rotation shaft of the motor body (1) from continuing to rotate under inertia after the motor body (1) stops.

4. The high-speed permanent magnet synchronous motor according to claim 3, characterized in that, The stopping locking mechanism (4) includes a locking platform (41), a locking platform (42), a slot (43), and a magnetic locking assembly. The locking platform (41) is fixedly connected to the rotating shaft of the motor body (1), and the locking platform (42) is fixedly connected to the left end of the motor body (1). Multiple slots (43) are evenly spaced along the axial direction of the locking platform (41) on the side of the locking platform (41). Multiple magnetic locking assemblies corresponding to the slots (43) are installed in the locking platform (42).

5. The high-speed permanent magnet synchronous motor according to claim 4, characterized in that, The magnetic locking assembly includes a second slide rod (44), a second spring (45), a ball bearing (46), a stop block (47), and a magnetic drive assembly. The locking platform (42) has a receiving groove, and the stop block (47) is fixedly connected to the inner wall of the receiving groove. The second slide rod (44) is slidably connected to the stop block (47), and a ball bearing is installed at one end of the second slide rod (44) near the locking platform (41). The second spring (45) is sleeved on the outside of the second slide rod (44), and the two ends of the second spring (45) are fixedly connected to the stop block (47) and the second slide rod (44) respectively.

6. The high-speed permanent magnet synchronous motor according to claim 5, characterized in that, The magnetic locking assembly includes a slanted push block (48), an electromagnetic block (49), and a third spring (410). The slanted push block (48) is slidably connected to the inner wall of the receiving groove, and the slanted surface of the slanted push block (48) is slidably connected to the end of the second slide rod (44) away from the ball (46). The electromagnetic block (49) is fixedly connected to the locking platform (42), and the slanted push block (48) and the electromagnetic block (49) are magnetically connected. A third spring (410) is fixedly installed between the slanted push block (48) and the electromagnetic block (49).

7. The high-speed permanent magnet synchronous motor according to claim 6, characterized in that, The electromagnetic block (49) is a de-energized electromagnet. When the electromagnetic block (49) is de-energized, it will repel the inclined push block (48) and push the inclined push block (48) away.

8. The high-speed permanent magnet synchronous motor according to claim 1, characterized in that, A modular heat dissipation mechanism (5) is installed on the outside of the motor body (1). The modular heat dissipation mechanism (5) is composed of multiple heat dissipation components distributed around the motor body (1).

9. The high-speed permanent magnet synchronous motor according to claim 8, characterized in that, The heat dissipation assembly includes a fixing plate (51), heat dissipation fins (52), positioning holes (53) and positioning blocks (54). The fixing plate (51) is attached to the outer periphery of the motor body (1), and multiple heat dissipation fins (52) are fixedly installed on the fixing plate (51). The outer periphery of the motor body (1) is provided with positioning holes (53), and positioning blocks (54) that are engaged with positioning holes (53) are fixedly installed on the fixing plate (51).

10. The high-speed permanent magnet synchronous motor according to claim 8, characterized in that, The heat dissipation fins (52) have a T-shaped cross section.

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