Motor ventilation slot structure, stator and motor
A technology of ventilation slots and stators, applied in the shape/style/structure of magnetic circuits, the shape/style/structure of winding conductors, electrical components, etc., can solve the problem of inability to block the development of temperature boundary layers, limit the cooling effect of windings, and heat transfer Effect reduction and other problems, to achieve the effect of reducing temperature, improving utilization efficiency, and improving heat dissipation performance
Active Publication Date: 2021-07-27
SHANGHAI ELECTRIC WIND POWER GRP CO LTD +1
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Problems solved by technology
[0004]The current cooling technology, the design of the radial ventilation slot is relatively simple, even if there is a horizontal turbulence structure, it cannot block the development of the longitudinal temperature boundary layer. With the development of the temperature boundary layer, the heat transfer effect is gradually decreasing.
In addition, the area of the air in contact with the winding is not enough, and the air in contact with the winding is mostly air that has been heated, and the cold air in the central area cannot contact the winding, which further limits the cooling effect of the winding
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[0016] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. Embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of means consistent with aspects of the invention as recited in the appended claims.
[0017] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. Unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present invention shall have the usual meanings understood by those skilled in the field of the present invention. "First", "second" and similar wo...
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The embodiment of the invention provides a motor ventilation slot structure, a stator and a motor. The motor comprises a stator, and the stator comprises a stator iron core and a winding fixed on the stator iron core. The motor ventilation slot structure comprises a plurality of ventilation slots arranged along the radial direction of a stator, and each ventilation slot comprises a radial straight slot arranged in a stator iron core and a plurality of grooves arranged along the radial direction of the stator at the parts, close to a winding, of the two opposite sides of the radial straight slot. According to the motor ventilation slot structure, the stator and the motor, the utilization efficiency of cooling air can be improved, and the temperature of the winding and the stator core can be effectively reduced.
Description
technical field [0001] The embodiments of the present invention relate to the technical field of motors, and in particular to a motor ventilation slot structure, a stator and a motor. Background technique [0002] The heating phenomenon of the motor will accelerate the aging of the motor insulation and reduce the service life of the motor. The large local temperature gradient of the motor will also generate a large local thermal stress, which may cause damage to the motor structure. Therefore, improving the cooling technology and improving the cooling capacity play a decisive role in prolonging the service life of the motor and ensuring the reliability of the motor. [0003] At present, the radial ventilation method of the motor is an important cooling method. The ventilation slots located inside the stator core and extending radially are formed by discontinuous stacking of silicon steel sheets and supported by the support structure of the ventilation slots. The ventilation...
Claims
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IPC IPC(8): H02K1/20H02K3/24H02K3/14H02K3/16H02K3/12
CPCH02K1/20H02K3/24H02K1/14H02K1/165H02K3/12
Inventor 王方园许爽崔明吴立建
Owner SHANGHAI ELECTRIC WIND POWER GRP CO LTD