Structure for improving cooling quality of magnetic suspension motor

Abstract

The utility model belongs to the technical field of magnetic suspension motors, and particularly relates to a structure for improving the cooling quality of a magnetic suspension motor, which comprises a motor shell, a cooling air inlet is arranged on the motor shell, a motor stator is fixedly connected in the motor shell, a motor rotor is rotatably connected in the motor shell, and a metal pipe is fixedly sleeved on the motor rotor. According to the magnetic suspension high-speed motor rotor cooling air guiding structure, through reasonable design, the problem that the cooling effect is reduced due to the fact that a cooling air guiding structure is lacked nearby an existing magnetic suspension high-speed motor rotor is solved, the structure is simple and reliable, and the cooling effect is good.

Description

Technical Field

[0001] This utility model belongs to the field of magnetic levitation motor technology, and in particular relates to a structure for improving the cooling quality of magnetic levitation motors. Background Technology

[0002] Maglev high-speed motors all generate heat during normal operation. The heat generation of some components in the motor varies. If the heat generation is not dealt with in time, the motor performance will drop significantly, or even the coil will be damaged, causing the motor to lose its working ability. Therefore, it is necessary to cool down the heat-generating components in the motor.

[0003] Current cooling methods for magnetic levitation high-speed motors can be categorized into water cooling, air cooling, and a hybrid water-air cooling system. In hybrid cooling magnetic levitation high-speed motors, the cooling structure can be divided into water cooling and air cooling sections. The water cooling section typically includes a coolant inlet, coolant flow channels, and guide pipes, while the air cooling section only has a cooling air inlet. Cold air is blown into the motor housing from the cooling air inlet to cool the components inside the motor. Because the heat-generating components of a magnetic levitation high-speed motor are distributed over a large area and the heat is not concentrated, the cooling speed of air cooling is slow and the cooling air distribution is uneven. In particular, the rotor and its surrounding area, which generate a lot of heat, are not adequately cooled. Utility Model Content

[0004] The main technical problem to be solved by this utility model is to provide a structure for improving the cooling quality of a magnetic levitation motor, which can overcome the problem of reduced cooling effect caused by the lack of cooling air guidance structure near the rotor of the existing magnetic levitation high-speed motor. The structure is simple and reliable and has a good cooling effect.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A structure for improving the cooling quality of a magnetic levitation motor includes a motor housing with a cooling air inlet, a motor stator fixedly connected inside the motor housing and a motor rotor rotatably connected thereto, and a metal tube fixedly sleeved on the motor rotor with a spiral groove on the outer surface of the metal tube.

[0007] The following are further optimizations of the above technical solution by this utility model:

[0008] There are two spiral grooves, including a first spiral groove and a second spiral groove.

[0009] Further optimization: The first spiral groove has a first air inlet at one end near the cooling air inlet and a first air outlet at the other end.

[0010] Further optimization: A second air inlet is provided at one end of the second spiral groove near the cooling air inlet, and a second air outlet is provided at the other end.

[0011] Further optimization: The first and second air inlets are arranged in a ring-shaped interval along the outer surface of the metal pipe.

[0012] Further optimization: The first and second air outlets are arranged in a ring-shaped interval along the outer surface of the metal pipe.

[0013] Further optimization: The metal tube is a nickel alloy tube.

[0014] Further optimization: The width of the spiral groove is 6±0.5mm, and the depth is 2±0.2mm.

[0015] This utility model, through rational design, overcomes the problem of reduced cooling effect caused by the lack of cooling air guidance structure near the rotor of existing magnetic levitation high-speed motors. It enables timely guidance of cooling air when entering the motor, reducing the failure of magnetic levitation high-speed motors caused by overheating. It allows the cooling air inside the motor to flow along the spiral groove, improving the internal cooling effect of the motor. The spiral groove ensures that the flow trajectory of the cooling air is distributed along the rotor axis to the entire motor. Since most of the heat generated in the magnetic levitation motor is concentrated in the rotor and its surrounding area, this design improves the cooling effect of air cooling on the magnetic levitation high-speed motor to a certain extent.

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the metal tube in an embodiment of this utility model.

[0019] In the diagram: 1-Motor housing; 101-Cooling air inlet; 2-Motor stator; 3-Motor rotor; 4-Metal tube; 401-First spiral groove; 4011-First air inlet slot; 4012-First air outlet slot; 402-Second spiral groove; 4021-Second air inlet slot; 4022-Second air outlet slot; 403-Connecting groove. Detailed Implementation

[0020] like Figure 1-2 As shown, a structure for improving the cooling quality of a magnetic levitation motor includes a motor housing 1, a cooling air inlet 101 on the motor housing 1, a motor stator 2 fixedly connected inside the motor housing 1 and a motor rotor 3 rotatably connected thereto, a metal tube 4 fixedly sleeved on the motor rotor 3, and a spiral groove on the outer surface of the metal tube 4.

[0021] With this design, cooling air is blown into the motor housing 1 from the cooling air inlet 101, which allows the cooling air inside the motor to flow along the spiral groove, improving the cooling effect inside the motor. The spiral groove makes the flow trajectory of the cooling air distributed along the rotor axis to the entire motor, effectively reducing the temperature of the rotor and its surroundings.

[0022] For metal pipe 4, nickel alloy pipe is preferred.

[0023] Nickel alloy tubes can maintain high strength at high temperatures and have excellent mechanical properties such as fatigue resistance.

[0024] The width of the spiral groove is 6±0.5mm and the depth is 2±0.2mm.

[0025] There are two spiral grooves, including a first spiral groove 401 and a second spiral groove 402.

[0026] The first spiral groove 401 has a first air inlet 4011 at one end near the cooling air inlet 101 and a first air outlet 4012 at the other end.

[0027] The second spiral groove 402 has a second air inlet 4021 at one end near the cooling air inlet 101 and a second air outlet 4022 at the other end.

[0028] The first air inlet 4011 and the second air inlet 4021 are arranged in a ring at intervals along the outer surface of the metal pipe 4.

[0029] The first air outlet 4012 and the second air outlet 4022 are arranged in a ring at intervals along the outer surface of the metal pipe 4.

[0030] This design allows the cooling air blown in from the cooling air inlet 101 to be more evenly guided to all parts of the motor.

[0031] Multiple connecting grooves 403 are provided between the first spiral groove 401 and the second spiral groove 402.

[0032] In addition to this embodiment, the number of spiral grooves can be one or more.

[0033] The cooling structure of this invention overcomes the problem of reduced cooling effect caused by the lack of cooling air guidance structure near the rotor of existing magnetic levitation high-speed motors. It enables the cooling air to be guided in time when entering the motor, reducing the failure caused by overheating of the magnetic levitation high-speed motor. It allows the cooling air inside the motor to flow along the spiral groove, and the rotor drives the nickel alloy tube with the spiral groove to rotate at high speed, making it easier to distribute the cooling air evenly to various parts of the motor and improving the cooling effect inside the motor.

[0034] For those skilled in the art, any changes, modifications, substitutions, and variations made to the implementation methods without departing from the principles and spirit of this utility model, based on the teachings of this utility model, still fall within the protection scope of this utility model.

Claims

1. A structure for improving the cooling quality of a magnetic levitation motor, comprising a motor housing (1), characterized in that: The motor housing (1) is provided with a cooling air inlet (101), the motor housing (1) is fixedly connected to a motor stator (2) and rotatably connected to a motor rotor (3), a metal tube (4) is fixedly sleeved on the motor rotor (3), and a spiral groove is provided on the outer surface of the metal tube (4).

2. The structure for improving the cooling quality of a magnetic levitation motor according to claim 1, characterized in that: The number of spiral grooves is two, including a first spiral groove (401) and a second spiral groove (402).

3. The structure for improving the cooling quality of a magnetic levitation motor according to claim 2, characterized in that: The first spiral groove (401) has a first air inlet (4011) at one end near the cooling air inlet (101) and a first air outlet (4012) at the other end.

4. The structure for improving the cooling quality of a magnetic levitation motor according to claim 3, characterized in that: The second spiral groove (402) has a second air inlet (4021) at one end near the cooling air inlet (101) and a second air outlet (4022) at the other end.

5. A structure for improving the cooling quality of a magnetic levitation motor according to claim 4, characterized in that: The first air inlet (4011) and the second air inlet (4021) are arranged in a ring-shaped interval along the outer surface of the metal pipe (4).

6. The structure for improving the cooling quality of a magnetic levitation motor according to claim 4, characterized in that: The first air outlet (4012) and the second air outlet (4022) are arranged in a ring-shaped interval along the outer surface of the metal pipe (4).

7. A structure for improving the cooling quality of a magnetic levitation motor according to claim 1, characterized in that: The metal tube (4) is a nickel alloy tube.

8. The structure for improving the cooling quality of a magnetic levitation motor according to claim 1, characterized in that: The spiral groove has a width of 6±0.5mm and a depth of 2±0.2mm.

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