Compressor

Abstract

The invention discloses a compressor. The compressor comprises a shell, a fixed support, stators, rotors and a compression device. The fixed support is arranged inside the shell. The stators are arranged inside the shell and connected to the fixed support. The rotors are rotatably arranged outside the stators in a sleeving mode. A cavity is defined among the stators, the rotors and the fixed support. The compression device is arranged in the cavity and comprises a crankshaft, a main bearing, an air cylinder and an auxiliary bearing. One end of the crankshaft stretches out of the cavity, and the other end of the crankshaft is connected with the rotors. According to the compressor, the compression device is arranged on the inner sides of the stators, and the stators are sleeved with the rotors, so that the crankshaft of the compression device is greatly shortened, and therefore the rigidity of the crankshaft is improved, and the deflection of the crankshaft is lowered in the operating process of a motor. Hence, the gap uniformity between the stators and the rotors can be controlled conveniently during assembly of the compressor; the mechanical loss of the motor is reduced, the vibration and noise of the compressor are lowered, and thus the overall efficiency of the compressor is improved. In addition, the compressor can be flattened.

Description

technical field [0001] The invention relates to the field of compressors. Background technique [0002] In the compressor in the prior art, its structural components are generally sealed in the container, and the motor is installed on the crankshaft of the refrigerant compression device. Wherein, the motor and the refrigerant compression device are usually assembled in a stacked manner, and the crankshaft length of the motor is the sum of the axial height of the refrigerant compression device and the motor product thickness. If the displacement of the compressor and the thickness of the motor increase, the axial length of the crankshaft will also increase accordingly. The increase in the axial length of the crankshaft makes the axial height of the compressor higher as a whole, and the swing amplitude and deflection of the crankshaft become larger, resulting in an increase in the gap between the stator and rotor, and the noise and vibration amplitude of the motor also increa...

AI Technical Summary

Problems solved by technology

The increase in the axial length of the crankshaft makes the axial height of the compressor higher as a whole, and the swing amplitude and deflection of the crankshaft become larger, resulting in an increase in the gap between the stator and rotor, and the noise and vibration amplitude of the motor also increase. This will cause the performance of the compressor to decrease, and the vibration and noise will increase.

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