Motor and twin-roller compressor with the motor

Abstract

The invention discloses a motor and a double-roller compressor having the same. The motor comprises a stator and a rotor, the stator comprises a stator core, the stator core has a stator magnet yoke and a plurality of stator teeth, the rotator includes a rotating shaft and a rotor core that sleeves the rotating shaft, the rotating shaft has one or more eccentric parts, the rotor core has a shaft hole matched with the rotating shaft and a plurality of permanent magnet holes arranged along the circumference of the shaft hole, the rotor core is provided with one or more main counterweight holes which axially extend along the rotating shaft and one or more auxiliary counterweight holes which axially extend along the rotating shaft, and centers of gravity of all the main counterweight holes are misaligned with centers of gravity of all the auxiliary counterweight holes. The motor provided by the invention can reduce raw material consumption of the counterweights used for balancing loads, reduces assembling processes, increases production efficiency, and can also improve a heat radiation effect of the motor.

Description

technical field [0001] The invention relates to the field of motors, in particular to a motor and a double-roller compressor with the motor. Background technique [0002] Motors are widely used in occasions where the rotational inertial force or moment is unbalanced. In order to reduce system vibration and noise and reduce system mechanical wear, the inertial force and moment must be balanced on the motor. The current method used is to add counterweight balance blocks at the upper and lower ends of the rotor. Through the design of the mass and center of gravity of the balance blocks, the balance effect is achieved, so that the centrifugal force generated by each eccentric part is synthesized to zero. Take the double-roller compressor motor as an example (the schematic diagram is as follows: figure 1 shown), that is: [0003] F1+F4 = F2+F3 (Formula 1) [0004] Due to the different heights of the center of gravity, there is a moment effect on the bearing surface, so that th...

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Problems solved by technology

[0008] 1. Although the balance block can be used to achieve system balance, it will consume a lot of raw materials (generally use high-density metal materials), and the cost is high;

[0009] 2. The riveting process of the balance block is added, which increases the complexity of production and trial production;

[0010] 3. In addition, the increase in mass causes an increase in the moment of inertia, which reduces its control response

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