Permanent magnet synchronous stepless speed regulation motor

Abstract

The permanent magnet synchronous stepless speed regulation motor comprises a first end cover, a second end cover, a cylinder body, a stator, a rotor and a rotating shaft, the first end cover and the second end cover are arranged at the two ends of the cylinder body respectively, the stator is fixedly arranged in the cylinder body, the rotor is arranged on the rotating shaft, and the first end cover and the second end cover are arranged on the rotating shaft. The two ends of the rotating shaft are respectively matched with the first end cover and the second end cover in a rotating mode, the rotor is located in the stator, the motor further comprises a controller and a protective cover, the protective cover is made of metal, the protective cover is arranged on one side of the first end cover, the controller is arranged on the protective cover, and the controller is arranged on the protective cover. The controller is located on the inner wall of the protective cover, the protective cover is provided with a first interface sleeve, a second interface sleeve and a third interface sleeve, and the first interface sleeve is not in contact with the second interface sleeve and the third interface sleeve.

Description

Technical Field

[0001] The utility model relates to the field of motors, in particular to a permanent magnet synchronous stepless speed regulating motor. Background Art

[0002] At present, fans are installed in tea gardens or pastures to adjust the temperature and humidity when needed. The most important component of the fan is the permanent magnet synchronous motor. Patent announcement document CN216490133U discloses a currently commonly used permanent magnet synchronous motor. This permanent magnet synchronous motor installs the driver (also known as the controller) closely on one side of the casing. This installation method can be roughly regarded as an integrated installation of the driver and the casing. Although this integrated installation method reduces the volume of the entire motor, it is not conducive to the heat dissipation of the driver. Utility Model Content

[0003] In view of the above problems, the utility model proposes a permanent magnet synchronous stepless speed regulating motor.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A permanent magnet synchronous stepless speed regulation motor comprises a first end cover, a second end cover, a cylinder, a stator, a rotor and a rotating shaft, wherein the first end cover and the second end cover are respectively arranged at the two ends of the cylinder, the stator is fixedly arranged in the cylinder, the rotor is arranged on the rotating shaft, the two ends of the rotating shaft are respectively rotatably matched with the first end cover and the second end cover, the rotor is located in the stator, and also comprises a controller and a protective cover, the protective cover is a protective cover made of metal material, the protective cover is arranged on one side of the first end cover, the controller is arranged on the protective cover, and the controller is located on the inner wall of the protective cover, the protective cover is provided with a first interface sleeve, a second interface sleeve and a third interface sleeve, and the first interface sleeve does not contact the second interface sleeve and the third interface sleeve.

[0006] In this type of motor, the side of the rotating shaft close to the second end cover is used to install the fan blades. After the fan blades are installed on this type of motor, a fan is formed. This type of motor is mainly used as a fan used in tea gardens or pastures. After the fan blades are installed, the fan blades and the protective cover are located on both sides of the cylinder respectively. When the motor is running, it drives the fan blades to rotate, so that the airflow flows from one side of the protective cover to the other side of the fan blade. The gas flowing through can cool the protective cover, and the metal protective cover can quickly conduct heat inside and outside, which can ensure that the heat generated by the controller can be dissipated in time, avoid the controller temperature from being too high, and improve the stability of the controller during operation.

[0007] In this motor, the first interface sleeve is the channel for the power cord to enter the protective cover, the second interface sleeve is the signal control input channel, and the third interface sleeve is the signal control output channel. The first interface sleeve is set in a position where it does not contact the second interface sleeve and the third interface sleeve. This design is to avoid interference between the power cord and the signal line and ensure the stability of motor control.

[0008] Optionally, the protective cover includes a first cover shell, a second cover cylinder and a third cover shell, the first cover shell and the third cover shell are respectively arranged at two ends of the second cover cylinder, and the first cover shell is fixed together with the first end cover.

[0009] Optionally, a heat dissipation bar is provided on the first cover, and the heat dissipation bar is closely attached to the first end cover.

[0010] The heat dissipation strips accelerate the heat transfer between the first housing and the first end cover. The heat generated by the controller is transferred to the first end cover via the first housing, and then dissipated to the environment via the first end cover, the cylinder and the second end cover.

[0011] Optionally, heat dissipation reinforcement ribs are provided on the outer wall of the cylinder, and there are multiple heat dissipation reinforcement ribs, and the multiple heat dissipation reinforcement ribs are in a parallel and non-contact state.

[0012] The functions of the heat dissipation reinforcement ribs are to strengthen the strength of the cylinder and to accelerate heat dissipation.

[0013] Optionally, the number of turns of each set of coils on the stator is 107 turns, the phase resistance is 5.8 ohms, the coil winding pole pitch is 3, and the coil winding pitch is 6.

[0014] Optionally, a permanent magnet mounting groove is provided on the rotor, a NdFeB magnet is arranged in the permanent magnet mounting groove, and the NdFeB magnet is distributed in the mounting groove in segmented blocks, and a magnetic isolation air groove is provided between the permanent magnet mounting groove and the outer wall surface of the rotor.

[0015] The magnetic air slot is opened between the permanent magnet installation slot and the outer wall of the rotor to reduce magnetic leakage. The NdFeB magnets are distributed in segmented blocks in the installation slot, which greatly reduces the output pulsating torque, increases the peak torque, and greatly improves the power density.

[0016] The beneficial effects of the utility model are: it can ensure that the heat generated by the controller can be dissipated in time, avoid the controller temperature being too high, and improve the stability of the controller during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a permanent magnet synchronous stepless speed regulating motor;

[0018] Figure 2 It is a schematic diagram of the matching relationship between the cylinder, the rotor and the stator;

[0019] Figure 3 It is a schematic diagram of the structure of the protective cover;

[0020] Figure 4 It is a schematic diagram of the structure of the rotor;

[0021] Figure 5 This is a schematic diagram of the distribution of NdFeB magnets inside the rotor.

[0022] The reference numerals in the figure are: 1. third cover body; 2. second cover cylinder; 201. first interface sleeve; 202. second interface sleeve; 203. third interface sleeve; 3. first cover body; 301. heat dissipation strip; 4. first end cover; 5. cylinder body; 501. heat dissipation reinforcement rib; 6. second end cover; 7. rotating shaft; 8. stator; 9. rotor; 901. permanent magnet mounting slot; 902. magnetic isolation air slot; 10. NdFeB magnet. DETAILED DESCRIPTION

[0023] The utility model is described in detail below in conjunction with the accompanying drawings.

[0024] As attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 4 And attached Figure 5 As shown, a permanent magnet synchronous stepless speed regulating motor includes a first end cover 4, a second end cover 6, a cylinder 5, a stator 8, a rotor 9 and a rotating shaft 7. The first end cover 4 and the second end cover 6 are respectively arranged at the two ends of the cylinder 5, the stator 8 is fixedly arranged in the cylinder 5, the rotor 9 is arranged on the rotating shaft 7, the two ends of the rotating shaft 7 are respectively rotatably matched with the first end cover 4 and the second end cover 6, the rotor is located in the stator 8, and also includes a controller and a protective cover, the protective cover is a metal protective cover, the protective cover is arranged on one side of the first end cover 4, the controller is arranged on the protective cover, and the controller is located on the inner wall of the protective cover, the protective cover is provided with a first interface sleeve 201, a second interface sleeve and a third interface sleeve, and the first interface sleeve 201 does not contact the second interface sleeve 202 and the third interface sleeve 203.

[0025] In this type of motor, the side of the rotating shaft 7 close to the second end cover 6 is used to install the fan blades. After the fan blades are installed on this type of motor, a fan is formed. This type of motor is mainly used for fans used in tea gardens or pastures. After the fan blades are installed, the fan blades and the protective cover are respectively located on both sides of the cylinder 5. When the motor is running, the fan blades are driven to rotate, so that the airflow flows from one side of the protective cover to the other side of the fan blade. The gas flowing through can cool the protective cover, and the metal protective cover can quickly conduct heat inside and outside, so as to ensure that the heat generated by the controller can be dissipated in time, avoid the controller temperature from being too high, and improve the stability of the controller during operation.

[0026] In this motor, the first interface sleeve 201 is the channel for the power cord to enter the protective cover, the second interface sleeve 202 is the signal control input channel, and the third interface sleeve 203 is the signal control output channel. The first interface sleeve 201 is set in a position where it does not contact the second interface sleeve and the third interface sleeve. This design is to avoid interference between the power cord and the signal line, thereby ensuring the stability of motor control.

[0027] As attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 4 And attached Figure 5 As shown, the protective cover includes a first cover shell, a second cover cylinder 2 and a third cover shell. The first cover shell and the third cover shell are respectively arranged at two ends of the second cover cylinder 2, and the first cover shell is fixed together with the first end cover 4.

[0028] As attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 4 And attached Figure 5 As shown, a heat dissipation bar 301 is disposed on the first housing, and the heat dissipation bar 301 is closely attached to the first end cover 4 .

[0029] The heat dissipation bar 301 accelerates the heat transfer between the first housing and the first end cover 4 . The heat generated by the controller is transferred to the first end cover 4 via the first housing, and then dissipated to the environment via the first end cover 4 , the cylinder 5 and the second end cover 6 .

[0030] As attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 4 And attached Figure 5 As shown, heat dissipation reinforcement ribs 501 are arranged on the outer wall of the cylinder 5 , and there are multiple heat dissipation reinforcement ribs 501 , and the multiple heat dissipation reinforcement ribs 501 are in a parallel and non-contacting state.

[0031] The functions of the heat dissipation reinforcement ribs 501 are to strengthen the strength of the cylinder 5 and to accelerate heat dissipation.

[0032] As attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 4 And attached Figure 5 As shown, the number of turns of each set of coils on the stator 8 is 107 turns, the phase resistance is 5.8 ohms, the coil winding pole pitch is 3, and the coil winding pitch is 6.

[0033] As attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 4And attached Figure 5 As shown, a permanent magnet mounting groove 901 is provided on the rotor, and a NdFeB magnet 10 is arranged in the permanent magnet mounting groove 901, and the NdFeB magnet 10 is distributed in the mounting groove in segmented blocks (that is, two NdFeB magnets are arranged in each permanent magnet mounting groove), and a magnetic isolation air groove 902 is provided between the permanent magnet mounting groove 901 and the outer wall surface of the rotor.

[0034] The magnetic air slot 902 is provided between the permanent magnet installation slot 901 and the outer wall of the rotor to reduce magnetic leakage. The NdFeB magnets 10 are distributed in the installation slot in a segmented block shape, which greatly reduces the output pulsating torque, increases the peak torque, and greatly improves the power density.

[0035] The above description is only a preferred embodiment of the present invention, and does not limit the patent protection scope of the present invention. Any equivalent transformations made using the contents of the present invention specification, directly or indirectly used in other related technical fields, are also included in the protection scope of the present invention.

Claims

1. A permanent magnet synchronous stepless speed regulating motor, comprising a first end cover, a second end cover, a cylinder, a stator, a rotor and a rotating shaft, wherein the first end cover and the second end cover are respectively arranged at the two ends of the cylinder, the stator is fixedly arranged in the cylinder, the rotor is arranged on the rotating shaft, the two ends of the rotating shaft are respectively rotatably matched with the first end cover and the second end cover, the rotor is located in the stator, and is characterized in that: It also includes a controller and a protective cover, the protective cover is a metal protective cover, the protective cover is arranged on one side of the first end cover, the controller is arranged on the protective cover, and the controller is located on the inner wall of the protective cover, and the protective cover is provided with a first interface sleeve, a second interface sleeve and a third interface sleeve, and the first interface sleeve does not contact the second interface sleeve and the third interface sleeve.

2. The permanent magnet synchronous stepless speed regulating motor according to claim 1, characterized in that: The protective cover comprises a first cover shell, a second cover cylinder and a third cover shell. The first cover shell and the third cover shell are respectively arranged at two ends of the second cover cylinder. The first cover shell is fixed together with the first end cover.

3. The permanent magnet synchronous stepless speed regulating motor according to claim 2, characterized in that: The first housing is provided with heat dissipation bars, and the heat dissipation bars are closely attached to the first end cover.

4. The permanent magnet synchronous stepless speed regulating motor according to claim 1, characterized in that: The outer wall of the cylinder is provided with heat dissipation reinforcement ribs, and there are a plurality of heat dissipation reinforcement ribs, and the plurality of heat dissipation reinforcement ribs are in a parallel and non-contacting state.

5. The permanent magnet synchronous stepless speed regulating motor according to claim 1, characterized in that: The number of turns of each set of coils on the stator is 107 turns, the phase resistance is 5.8 ohms, the coil winding pole pitch is 3, and the coil winding pitch is 6.

6. The permanent magnet synchronous stepless speed regulating motor according to claim 1, characterized in that: The rotor is provided with a permanent magnet installation groove, in which a NdFeB magnet is arranged, and the NdFeB magnet is distributed in the installation groove in a segmented block shape, and a magnetic isolation air groove is provided between the permanent magnet installation groove and the outer wall surface of the rotor.

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