Background technology
Motor is to use the most a kind of driving arrangement, and owing to people improve the requirement of motor performance and environmental quality, the noise of motor has become the technical indicator of an important measurement motor quality level.It is diversified causing the big reason of motor noise, and wherein the electric machine rotor fit structure is one of key factor that influences motor noise.The stator and rotor cores air duct aligns in the present common two-pole machine rotor fit structure, and during motor rotation, noise is obviously bigger than normal.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of large-scale two-pole machine rotor fit structure, and the motor of this structure has that noise is little, and temperature rise is low, good characteristics such as efficient height.
The utility model is achieved through the following technical solutions:
A kind of large-scale two-pole machine rotor fit structure comprises the stator and the rotor that are respectively equipped with air duct, and described stator air duct and rotor ventilation road stagger and do not line up setting.
The further improvement project of the utility model is, described rotor ventilation road width is 1.5~2.5 times of stator air duct, and the quantity in rotor ventilation road is half of stator air duct.
The utility model further improvement project is that stepping is divided equally in institute's rotor core, small one and large one interval stepping of stator core, the middle position of the little shelves aligning rotor core shelves of stator core.
The utility model compared with prior art has following obvious advantage:
The utility model does not line up setting owing to adopt stator air duct and rotor ventilation road to stagger, and rotor ventilation road width is 1.5~2.5 times of stator air duct, and the quantity in rotor ventilation road is half of stator air duct; Stepping is divided equally in rotor core, small one and large one interval stepping of stator core, and the little shelves of stator core are aimed at the middle position of rotor core shelves.The large-scale two-pole machine of this structure has that noise is little, and temperature rise is low, characteristics such as efficient height.
Embodiment
As shown in Figure 1, a kind of large-scale two-pole machine rotor fit structure described in the utility model comprises the stator 1 and rotor 2 that are respectively equipped with air duct, and described stator air duct 11 staggers with rotor ventilation road 21 and do not line up setting; Described rotor ventilation road 21 width are twices of stator air duct 11, and the quantity in rotor ventilation road 21 is half of stator air duct 11; Institute's rotor 2 iron cores are divided equally stepping, stator 1 small one and large one interval stepping unshakable in one's determination, and the little shelves 12 of stator core are aimed at the middle position of rotor core shelves 22.