Weight reduction and heat dissipation type rotor device

Abstract

The utility model relates to the field of motor accessories, and discloses a weight-reduction heat-dissipation type rotor device, which comprises a rotor iron core, a through groove is formed in the inner side of the middle part of the rotor iron core, a plurality of groups of mounting grooves are formed in the inner wall of the rotor iron core, permanent magnets are fixedly connected to the inner walls of the mounting grooves, a heat-dissipation assembly is arranged on the inner side of the through groove, and the heat-dissipation assembly is arranged on the inner side of the through groove. The heat dissipation assembly comprises supporting blocks, the outer sides of the supporting blocks are fixedly connected to the inner walls of the through grooves, sleeves are fixedly connected to the inner sides of the two supporting blocks, rotating shafts are fixedly connected to the inner walls of the sleeves, and heat dissipation holes are formed in the inner wall of the rotor iron core. According to the utility model, through cooperative use of the heat dissipation assembly and the rotor iron core, when the device rotates, the rotation of the twisted blade I and the twisted blade II promotes the flow of air at the two sides of the device, and the air is discharged through the plurality of groups of heat dissipation holes, so that the heat dissipation of the rotor iron core is carried out, and the heat dissipation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of motor accessories, in particular to a weight-reducing and heat-dissipating rotor device. Background Technique

[0002] The permanent magnet synchronous motor is a type of motor. Its rotor, as a key rotating component in the motor, directly affects the overall efficiency, reliability, and service life of the motor. With the progress of technology and the rapid development of industry, motors are widely used in various fields, including but not limited to electric vehicles, wind power generation, industrial automation, aerospace, and household appliances.

[0003] The rotor fan of the permanent magnet synchronous motor is usually arranged outside the rotor core.

[0004] During the operation of the permanent magnet synchronous motor, the rotor will generate a large amount of heat due to electromagnetic induction, friction, etc. The rotor fan outside the rotor core cannot sufficiently dissipate heat from the rotor core on the rotor, thus affecting the performance and service life of the motor. For this reason, a weight-reducing and heat-dissipating rotor device is proposed to solve the above problems. Content of the Utility Model

[0005] In order to make up for the above deficiencies, the utility model provides a weight-reducing and heat-dissipating rotor device, aiming to improve the problem that "the rotor fan outside the rotor core cannot sufficiently dissipate heat from the rotor core on the rotor, thus affecting the performance and service life of the motor" in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a weight-reducing and heat-dissipating rotor device, including a rotor core, a through groove is opened in the inner side of the middle of the rotor core, an installation groove is opened on the inner wall of the rotor core, and multiple groups of installation grooves are opened. A permanent magnet is fixedly connected to the inner wall of the installation groove, a heat dissipation component is arranged inside the through groove, the heat dissipation component includes a support block, the outer side of the support block is fixedly connected to the inner wall of the through groove, two groups of support blocks are arranged, and a sleeve is fixedly connected to the inner side of the two groups of support blocks. A rotating shaft is fixedly connected to the inner wall of the sleeve.

[0007] As a further description of the above technical solution:

[0008] Heat dissipation holes are opened on the inner wall of the rotor core, and heat dissipation grooves are circumferentially opened on the outer side of the rotor core.

[0009] As a further description of the above technical solution:

[0010] A first blade is fixedly connected to the right side of the sleeve, and a second blade is fixedly connected to the left side of the sleeve.

[0011] As a further description of the above technical solution:

[0012] The right side of the second twisted blade is fixedly connected to the left side of the first twisted blade, and multiple groups of permanent magnets are provided.

[0013] As a further description of the above technical solution:

[0014] The first twisted blade is arranged around the outer wall of the sleeve.

[0015] As a further description of the above technical solution:

[0016] The second twisted blade is arranged around the outer wall of the sleeve.

[0017] As a further description of the above technical solution:

[0018] The heat dissipation holes are elliptical, multiple groups of heat dissipation holes are provided, and multiple groups of heat dissipation holes are respectively opened at the middle positions between two groups of permanent magnets.

[0019] As a further description of the above technical solution:

[0020] The sleeve is made of magnetic isolation material.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, through the combined use of the heat dissipation component and the rotor core, when the device rotates, the first twisted blade and the second twisted blade rotate to promote the air flow on both sides of the device, and the air is discharged through multiple groups of heat dissipation holes, thereby dissipating heat from the rotor core and improving the heat dissipation efficiency.

[0023] 2. In the utility model, through the arrangement of multiple groups of heat dissipation holes and through grooves, the weight of the device can be reduced, thereby reducing the weight of the device and being beneficial to reducing the energy consumption of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structure schematic diagram of the overall device in the utility model;

[0025] Figure 2 It is a front view three-dimensional structure sectional schematic diagram of the rotor core in the utility model;

[0026] Figure 3 It is a disassembled three-dimensional structure schematic diagram of the sleeve and the rotating shaft in the utility model.

[0027] LEGEND DESCRIPTION:

[0028] 1. Rotor core; 2. Installation groove; 3. Permanent magnet; 41. Support block; 42. Sleeve; 43. Rotating shaft; 44. Heat dissipation hole; 45. Heat dissipation groove; 46. First twisted blade; 47. Second twisted blade; 5. Through groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0030] Referring to Figure 1 and Figure 2 , an embodiment provided by the present utility model: a weight-reducing and heat-dissipating rotor device, including a rotor core 1, which serves as the main structure of the rotor device, provides an installation position for the permanent magnet 3, and together with other components constitutes the entire rotor. A through groove 5 is opened inside the middle of the rotor core 1 to provide an installation space for the heat dissipation component. Installation grooves 2 are opened on the inner wall of the rotor core 1 for fixedly installing the permanent magnet 3 to ensure the stable position of the permanent magnet 3 during the rotation of the rotor, thereby ensuring the stable magnetic field of the motor. And multiple groups of installation grooves 2 are provided. The inner wall of the installation groove 2 is fixedly connected with the permanent magnet 3 to generate a magnetic field, which interacts with the motor stator to drive the motor to rotate. A heat dissipation component is arranged inside the through groove 5. The heat dissipation component includes a support block 41, which connects the inner wall of the through groove 5 and the sleeve 42, playing a role in fixing the sleeve 42 to ensure the stable position of the sleeve 42 during the rotation of the rotor and prevent it from shaking.

[0031] Furthermore, the outer side of the support block 41 is fixedly connected to the inner wall of the through groove 5. Two groups of support blocks 41 are provided. The inner sides of the two groups of support blocks 41 are fixedly connected with the sleeve 42. The sleeve 42 is made of a magnetic isolation material, serving as the installation carrier of the rotating shaft 43. At the same time, the characteristic of its magnetic isolation material can prevent the magnetic field from affecting the rotating shaft 43 and ensure the normal operation of the rotating shaft 43. The inner wall of the sleeve 42 is fixedly connected with the rotating shaft 43, which is the rotation center shaft of the rotor device, and cooperates with the components of the motor to realize the rotational movement of the rotor.

[0032] Referring to Figure 1 and Figure 2 , heat dissipation holes 44 are opened on the inner wall of the rotor core 1. The heat dissipation holes 44 are elliptical, which helps to increase the area of the heat dissipation holes 44 and improve the heat dissipation effect. Multiple groups of heat dissipation holes 44 are provided. The multiple groups of heat dissipation holes 44 are respectively opened at the middle positions between the two groups of permanent magnets 3. By opening at the middle positions between the two groups of permanent magnets 3, the airflow generated by the rotation of the first impeller 46 and the second impeller 47 can flow through the heat dissipation holes 44 on the inner wall of the rotor core 1, quickly dissipating the heat generated by the permanent magnet 3. Heat dissipation grooves 45 are circumferentially opened on the outer side of the rotor core 1. The circumferential opening helps to increase the contact area between the rotor and the surrounding air and improve the heat dissipation efficiency.

[0033] Referring to Figure 2 and Figure 3, on the right side of the sleeve 42, a first agitating vane 46 is fixedly connected. The first agitating vane 46 is arranged around the outer wall of the sleeve 42. On the left side of the sleeve 42, a second agitating vane 47 is fixedly connected. The second agitating vane 47 is arranged around the outer wall of the sleeve 42. When the rotor rotates, the first agitating vane 46 and the second agitating vane 47 rotate accordingly, generating an air flow. On the one hand, the air flow can flow inside the rotor core 1 through the heat dissipation holes 44, taking away the heat generated by the permanent magnet 3. On the other hand, the rotation of the agitating vanes can also promote the air flow around the rotor core 1, further improving the heat dissipation efficiency through the heat dissipation grooves 45. At the same time, the first agitating vane 46 and the second agitating vane 47 can increase the stability between the sleeve 42 and the rotor core 1 through the winding arrangement. The right side of the second agitating vane 47 is fixedly connected to the left side of the first agitating vane 46, and multiple groups of permanent magnets 3 are provided.

[0034] Working principle: During use, when the motor starts, the permanent magnet 3 drives the rotor core 1 to start rotating, driving the sleeve 42 fixedly connected thereto and the first agitating vane 46 and the second agitating vane 47 on both sides of the sleeve 42 to rotate. Since the first agitating vane 46 and the second agitating vane 47 are arranged around the outer wall of the sleeve 42, an air flow will be generated during the rotation process. The air flow flows inside the rotor core 1 through the oval heat dissipation holes 44, taking away the heat generated by the permanent magnet 3 during the process of interacting with the motor stator to drive the motor to rotate, realizing the heat dissipation of the permanent magnet 3.

[0035] At the same time, the heat dissipation grooves 45 provided around the outer side of the rotor core 1 increase the contact area between the rotor and the surrounding air. The flowing air further takes away the heat through the heat dissipation grooves 45, improving the overall heat dissipation efficiency.

[0036] By providing multiple groups of oval heat dissipation holes 44, weight reduction can be achieved, thereby reducing the weight of the device, which is beneficial to reducing the energy consumption of the motor.

[0037] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A weight-reducing and heat-dissipating rotor device, comprising a rotor core (1), characterized in that: A through slot (5) is provided on the inner side of the middle of the rotor core (1), a mounting slot (2) is provided on the inner wall of the rotor core (1), and a plurality of mounting slots (2) are provided, a permanent magnet (3) is fixedly connected to the inner wall of the mounting slot (2), a heat dissipation component is provided on the inner side of the through slot (5), and the heat dissipation component comprises a support block (41), the outer side of the support block (41) is fixedly connected to the inner wall of the through slot (5), two groups of the support blocks (41) are provided, the inner sides of the two groups of the support blocks (41) are fixedly connected to sleeves (42), and the inner wall of the sleeve (42) is fixedly connected to a rotating shaft (43).

2. A weight-reducing and heat-dissipating rotor device according to claim 1, characterized in that: The inner wall of the rotor core (1) is provided with heat dissipation holes (44), and the outer side of the rotor core (1) is provided with heat dissipation grooves (45) around it.

3. A weight-reducing and heat-dissipating rotor device according to claim 1, characterized in that: The right side of the sleeve (42) is fixedly connected to a hinge blade one (46), and the left side of the sleeve (42) is fixedly connected to a hinge blade two (47).

4. A weight-reducing and heat-dissipating rotor device according to claim 3, characterized in that: The right side of the second hinged leaf (47) is fixedly connected to the left side of the first hinged leaf (46), and the permanent magnets (3) are arranged in multiple groups.

5. A weight-reducing and heat-dissipating rotor device according to claim 3, characterized in that: The hinge blade one (46) is arranged around the outer wall of the sleeve (42).

6. A weight-reducing and heat-dissipating rotor device according to claim 3, characterized in that: The second hinge blade (47) is arranged around the outer wall of the sleeve (42).

7. A weight-reducing and heat-dissipating rotor device according to claim 2, characterized in that: The heat dissipation holes (44) are provided in an elliptical shape, and a plurality of groups of the heat dissipation holes (44) are provided. The plurality of groups of heat dissipation holes (44) are respectively provided in the middle position of two groups of permanent magnets (3).

8. The weight-reducing and heat-dissipating rotor device according to claim 1, characterized in that: The sleeve (42) is made of magnetic isolation material.

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