Fan blade opening type permanent magnet motor rotor pressing plate

Abstract

The utility model discloses a fan leaf trepanning formula permanent magnet motor rotor pressing plate belongs to permanent magnet motor manufacturing technical field, including the rotor pressing plate body of circular ring, the circular ring surface of rotor pressing plate body is equipped with four groups of lifting hole, the lifting hole is with the center of the circle center of rotor pressing plate body, presents the cross even distribution, is equipped with a plurality of circular vent hole and is used for fixing the fixing hole of magnetic pole unit between every adjacent two groups of lifting hole, and the vent hole is alternately arranged with fixing hole, still be equipped with a plurality of radiating fins on the rotor pressing plate body. By using this rotor pressing plate, the heat dissipation capacity of permanent magnet motor can be improved, and the demagnetization of permanent magnet can be reduced.

Description

Technical Field

[0001] This utility model belongs to the field of permanent magnet motor manufacturing technology, specifically relating to a fan blade perforated permanent magnet motor rotor pressure plate. Background Technology

[0002] With the continuous advancement and maturation of permanent magnet motor technology, ensuring stable motor operation has become a key focus in the industry. The operating temperature of a motor is a crucial parameter for assessing its working condition and long-term reliability. Excessively high operating temperatures not only reduce motor efficiency but can also lead to problems such as demagnetization of permanent magnets and aging of insulation materials, thereby affecting the overall performance and lifespan of the motor. Therefore, taking effective measures to reduce motor operating temperature is of great significance for improving motor efficiency, extending service life, and ensuring the safe and stable operation of the system.

[0003] Traditional permanent magnet motor rotor plates employ a slotless design. While this simplifies manufacturing and reduces costs to some extent, it has a significant drawback: poor heat dissipation within the rotor. During motor operation, the rotor generates heat due to electromagnetic interactions and mechanical friction. This heat needs to be effectively dissipated to prevent demagnetization of the permanent magnets and damage to insulation materials caused by overheating. However, the slotless design restricts effective contact between air or cooling media and the internal heat sources of the rotor, hindering rapid heat transfer and diffusion. This leads to increased internal rotor temperature, affecting motor performance and lifespan. Therefore, improving the rotor plate design and incorporating structures that facilitate heat dissipation has become a key direction for enhancing the overall performance and reliability of permanent magnet motors. Utility Model Content

[0004] This invention addresses the problem of poor heat dissipation in permanent magnet motors by providing a fan-blade perforated rotor pressure plate for permanent magnet motors. By using this rotor pressure plate, the heat dissipation capacity of the permanent magnet motor can be improved, and the demagnetization of the permanent magnet can be reduced.

[0005] The present invention adopts the following technical solution: A fan-blade perforated permanent magnet motor rotor pressure plate includes a circular rotor pressure plate body. The circular surface of the rotor pressure plate body is provided with four sets of lifting holes. The lifting holes are evenly distributed in a cross shape with the center of the rotor pressure plate body as the center. Between each pair of adjacent lifting holes, there are several circular ventilation holes and fixing holes for fixing magnetic pole units. The ventilation holes and fixing holes are arranged alternately. The rotor pressure plate body is also provided with several heat dissipation blades.

[0006] Furthermore, each group has four lifting holes.

[0007] Furthermore, the diameter of the ventilation hole is larger than the diameter of the fixing hole.

[0008] Furthermore, the number of heat dissipation blades is 12, and the heat dissipation blades are arranged at equal intervals with the center of the rotor pressure plate body as the center, and the heat dissipation blades are located at the center of the ventilation holes at corresponding positions.

[0009] Furthermore, the heat dissipation blade has a rectangular cross-section, the plane on which the heat dissipation blade is located is perpendicular to the plane on which the rotor pressure plate body is located, and the extension line of the plane on which the heat dissipation blade is located points to the center of the rotor pressure plate body.

[0010] Furthermore, one end of the heat dissipation blade extends out of the rotor pressure plate body towards the inner layer of the rotor pressure plate body, and the other end is flush with the edge of the rotor pressure plate body.

[0011] The beneficial effects of this utility model are as follows: 1. This utility model, by setting circular ventilation holes, facilitates air circulation, helps improve heat dissipation efficiency, and reduces the risk of performance degradation or failure due to overheating.

[0012] 2. By rationally designing the holes, this utility model can effectively reduce the weight of the rotor pressure plate body while ensuring mechanical strength.

[0013] 3. By setting heat dissipation blades, this utility model can increase the heat dissipation area of ​​the motor, reduce the temperature of the motor during operation, and improve the stability and service life of the motor. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the main structure of this utility model; Figure 3 This is a schematic diagram of the right-side structure of this utility model; Figure 4 This is a schematic diagram of the main structure for assembly application of this utility model; Figure 5 This is a schematic diagram of the right-side view structure of the assembly application of this utility model; Wherein: 1-rotor pressure plate body; 2-lifting hole; 3-ventilation hole; 4-fixing hole; 5-heat dissipation blade; 6-fastening bolt; 7-magnet; 8-magnetic pole unit. Detailed Implementation

[0015] The present invention will be further described with reference to the accompanying drawings.

[0016] like Figures 1-3As shown, a fan-blade perforated permanent magnet motor rotor pressure plate includes a circular rotor pressure plate body 1. The circular surface of the rotor pressure plate body 1 is provided with four sets of lifting holes 2, with four lifting holes 2 in each set. The lifting holes 2 are evenly distributed in a cross shape with the center of the rotor pressure plate body 1 as the center. Between each two adjacent sets of lifting holes 2, there are several circular ventilation holes 3 and fixing holes 4 for fixing magnetic pole units. The ventilation holes 3 and fixing holes 4 are arranged alternately. The rotor pressure plate body 1 is also provided with a stainless steel heat dissipation blade 5 every 30°, for a total of 12 blades.

[0017] like Figures 4-5 As shown, when using this utility model, first install the rotor pressure plate on one side of the rotor and fix it with fastening bolts 6. Then, install the magnets 7 into the magnetic pole unit 8 from the other side in sequence, and install the corresponding rotor pressure plate on the other side of the rotor to achieve the pressing of the magnetic pole unit 8.

[0018] The rotor pressure plate on one side is set as an integral piece, while the rotor pressure plate on the other side is set as a split piece (composed of 12 fan-shaped rotor pressure plates). This structure avoids the situation where the magnet jumps out and loosens due to the magnet not being tightened in time after installation.

Claims

1. A fan-blade perforated permanent magnet motor rotor pressure plate, characterized in that: The rotor pressure plate body (1) is circular in shape. The circular surface of the rotor pressure plate body (1) is provided with four sets of lifting holes (2). The lifting holes (2) are evenly distributed in a cross shape with the center of the rotor pressure plate body (1) as the center. Between each two adjacent sets of lifting holes (2), there are several circular ventilation holes (3) and fixing holes (4) for fixing magnetic pole units. The ventilation holes (3) and fixing holes (4) are arranged alternately. The rotor pressure plate body (1) is also provided with several heat dissipation blades (5).

2. The fan-blade perforated permanent magnet motor rotor pressure plate according to claim 1, characterized in that: The number of lifting holes (2) in each group is four.

3. The fan-blade perforated permanent magnet motor rotor pressure plate according to claim 1, characterized in that: The diameter of the ventilation hole (3) is larger than the diameter of the fixing hole (4).

4. The fan-blade perforated permanent magnet motor rotor pressure plate according to claim 1, characterized in that: The number of heat dissipation blades (5) is 12. The heat dissipation blades (5) are arranged at equal intervals with the center of the rotor pressure plate body (1) as the center, and the heat dissipation blades (5) are located at the center of the ventilation hole (3) at the corresponding position.

5. The fan-blade perforated permanent magnet motor rotor pressure plate according to claim 4, characterized in that: The heat dissipation blade (5) has a rectangular cross section. The plane where the heat dissipation blade (5) is located is perpendicular to the plane where the rotor pressure plate body (1) is located, and the extension line of the plane where the heat dissipation blade (5) is located points to the center of the rotor pressure plate body (1).

6. The fan-blade perforated permanent magnet motor rotor pressure plate according to claim 5, characterized in that: The heat dissipation blade (5) extends out of the rotor pressure plate body (1) at one end facing the inner layer of the rotor pressure plate body (1), and the other end is flush with the edge of the rotor pressure plate body (1).

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