Multi-way soaking type motor
A stator and coolant technology, applied in the direction of magnetic circuit shape/style/structure, magnetic circuit static parts, etc., can solve the problems of reducing the electric density of the motor stator winding, reducing the excitation effect of the permanent magnet, and reducing the power density of the motor, etc., to achieve Improve cooling efficiency, novel and simple cooling design, increase power density and the effect of
Active Publication Date: 2014-09-24
BEIJING JIAOTONG UNIV
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Problems solved by technology
In turn, the main reluctance of the motor is increased, the excitation effect of the permanent magnet is reduced, and the electric density of the stator winding of the motor is reduced, which also reduces the power density of the motor
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[0027] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0028] Such as Figure 1-Figure 4 As shown, the multi-channel immersion motor of the present invention is mainly composed of a stator 1, an oil separator 3, a permanent magnet 4, a rotor core 5 and a rotating shaft 6 from the outside to the inside. The above-mentioned structure is the same as that of the existing motor. The invention improves the cooling mode of the motor, and its cooling system includes a multi-channel structure, an immersion structure and a four-way structure.
[0029] The multi-channel structure of the cooling system is as figure 2 As shown, the multi-channel structure is a circumferential annular groove 11 arranged radially on the yoke back of the stator 1 . A circumferential annular groove 11 is provided on the yoke back of the stator 1 to form an annular groove structure. Four correspondin...
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The invention provides the design of a multi-way soaking type motor of a four-way structure. A cooling system is of a multi-way structure, a soaking type structure and a four-way structure. According to the multi-way structure, periphery-direction annular oil ways are arranged at a stator radial groove. According to the soaking type structure, groove inner oil ways in a stator are filled with oil in an injection mode, a stator winding is fully soaked in the oil, and the soaking type structure is formed. According to the four-way structure, an oil supply mouth is formed above the middle portion of the stator, the oil supply mouth is formed by a four-way mouth, wherein two oil supply mouths provide oil for the periphery-direction annular oil ways on the two sides of a yoke part, another oil mouth extends deep into the stator groove, and oil supply is carried out by the fact that oil flows into the groove inner oil ways in the two sides. An oil separating ring in an air gap of the stator and a rotor can effectively prevent cooling liquid from permeating into the rotor. The design is novel and simple, and the cooling effect of the motor can be effectively improved.
Description
technical field [0001] The invention relates to a motor, in particular to a multi-channel immersion motor. Background technique [0002] Under the current social situation, the country and the international community are vigorously promoting sustainable energy-saving models. Therefore, motors also need to develop in the direction of smaller volume and higher efficiency. [0003] However, due to its relatively small volume, while saving materials, the loss per unit volume is relatively increased, and the temperature rise of the rotor is increased. Therefore, the requirements for the motor cooling system are increased. High-speed motors generally use the stator back-wound oil cooling system. In this cooling system, the heat generated by the rotor core and the stator winding is conducted radially outward through the stator core until the outer surface of the stator core comes into contact with the cooling liquid, which greatly reduces the cooling effect and slows down the cooli...
Claims
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IPC IPC(8): H02K1/20
Inventor 李伟力李金阳靳海鹏张晓晨李栋付敏沈稼丰
Owner BEIJING JIAOTONG UNIV