Quadrupole variable-frequency motor rotor punching sheet
A technology of rotor punching and frequency conversion motor, which is applied to the magnetic circuit rotating parts, magnetic circuit shape/style/structure, etc., can solve the problem of motor noise exceeding the standard, achieve the effect of meeting design requirements and reducing electromagnetic noise
Inactive Publication Date: 2011-04-13
WUXI ZHONGDA MOTORS
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Problems solved by technology
[0004] In the existing technology, the stator and rotor slots used in the 355 center height four-pole frequency conversion motor are 72 / 62 (that is, the stator punch has 72 slots, and the rotor punch has 62 slots), and the slots are matched with the stator and rotor punches. The motor will produce a certain amount of electromagnetic noise, so that when the motor is at 45-50Hz, the motor noise exceeds the standard
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[0011] The present invention will be further described below in conjunction with the embodiments in the drawings:
[0012] The present invention only needs to change the punching die of the rotor punching sheet, use silicon steel sheet to punch out the rotor punching sheet body 1 on the punching machine, and 63 rotor punching grooves 3 are provided on the rotor punching sheet body 1, and then the special rotor die casting machine A certain number of rotor punching pieces 1 and aluminum 2 are die-casted into one body to form a cast aluminum rotor. The solution of the invention does not change the original assembly method of the motor.
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The invention relates to a quadrupole variable-frequency motor rotor punching sheet which is specifically used in a quadrupole variable-frequency motor rotor core with 355 center height. The quadrupole variable-frequency motor rotor punching sheet comprises a rotor punching sheet body and is characterized in that 63 rotor punching sheet grooves are arranged on the rotor punching sheet body. In the invention, because the number of the matching grooves arranged on the motor rotor punching sheet body is changed into 63, namely the number of the stator punching sheet grooves is not changed and the groove shape of the rotor punching sheet is not changed, when in use, the electromagnetic noise of the motor can be greatly lowered, and the design requirements of the motor can be met.
Description
Technical field [0001] The invention relates to a four-pole variable-frequency motor rotor punching sheet, and is specifically used in a 355 center-high four-pole variable-frequency motor rotor core. Background technique [0002] With the development and progress of human science and technology, people increasingly realize the importance of environmental protection. Noise is an irregular combination of different frequencies and different intensities. It affects people's lives and work, and also makes physical devices and equipment fatigue or failure. [0003] The motor is a noise source, and its noise level has become an important technical indicator to measure the quality of the motor. Motor noise is generally divided into mechanical noise, aerodynamic noise and electromagnetic noise. Electromagnetic noise can cause a strong and harsh noise sensation, which makes people feel very uncomfortable. The stator punch and rotor punch are the key parts used in the motor. The stator and...
Claims
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Inventor 张锋黄标张卫东
Owner WUXI ZHONGDA MOTORS
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