Motor shaft assembly and compressor

Abstract

The invention discloses a motor shaft assembly, which comprises a vertically arranged rotating shaft, wherein a bracket which is fixedly arranged on a compressor shell sleeves the top end part of the rotating shaft; and a bearing which is sleeved coaxially with the rotating shaft is arranged on the top of the bracket. The bracket at the top end of the rotating shaft is capable of providing enough structure support force for upper related structures of the motor shaft assembly in a working process; the overall structure support force of the motor shaft assembly is relatively balanced in distribution; and the phenomena such as component abrasion caused by uneven support force distribution are avoided, so that the overall structure of the compressor is relatively reliable and durable; and meanwhile, the baring block is capable of realizing centering limiting on the bearing to ensure the adaptability and the running stability between the bearing and the related mating members such as the rotating shaft and the crank shaft in the running process of equipment, so that the overall running of the compressor is relatively stable and efficient. The invention further discloses a compressor employing the motor shaft assembly.

Description

technical field [0001] The invention relates to the technical field of compressor supporting equipment, in particular to a motor shaft assembly. The invention also relates to a compressor using the motor shaft assembly. Background technique [0002] Compressor is a very common cooling equipment, and the motor shaft assembly is an indispensable working component in the main structure of the compressor, and its working performance is also increasingly concerned by people. [0003] At present, the existing motor shaft assembly assembly structure, especially in the vertical compressor motor shaft assembly assembly structure, usually uses the long shaft of the crankshaft and the upper flange as the main bearing, and the short shaft of the crankshaft and the lower flange Cooperate as a secondary bearing. This type of structure leads to uneven mass distribution of the motor shaft assembly. The upper structure has a larger mass and the lower structure has a smaller mass. However, ...

AI Technical Summary

Problems solved by technology

This type of structure leads to uneven mass distribution of the motor shaft assembly. The mass of the upper structure is relatively large, while the mass of the lower structure is relatively small. However, the main supporting force of the overall structure is provided by the lower part of the structure, and the upper structure lacks effective support. Structure, the unbalanced distribution of supporting force in this structural form seriously affects the overall operation stability of the compressor, making the compressor unsuitable for some use environments that require high reliability of the compressor, and its structure is only supported by the lower part of the structure It also makes the friction loss of the long and short axis of the crankshaft is also relatively large, which adversely affects the overall fatigue strength and service life of the compressor

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