Rotary compressor and rotary machine

Abstract

The invention relates to a rotary compressor, comprising a housing (12) which comprises a lubricating oil storage part for receiving lubricating oil, a compression mechanism (20) arranged in the housing (12), a drive mechanism (30) for driving the compression mechanism (20), wherein the driving mechanism (30) comprises a rotary shaft (50), the rotary shaft (50) is provided with through holes (54, 56) which extend axially along with the rotary shaft (50), the rotary shaft (50) is communicated with the lubricating oil storage part through the through holes (54, 56), and the rotary compressor further comprises an oil level sensor (120) which is in flow communication with the through holes (54, 56) in the rotary shaft (50) through a pressure collecting channel (110). The invention also relates to a rotary machine. According to the invention, the lubricating oil in the compressor can be detected accurately and reliably in a simple way, thus the cost is greatly saved, and the reliability of the compressor is raised.

Description

technical field [0001] The present invention relates to a rotary compressor and a rotary machine. Background technique [0002] A rotary compressor generally includes a housing, a compression mechanism accommodated in the housing, a driving mechanism for driving the compression mechanism, and the like. In order to ensure the normal operation of the compressor, there must be enough lubricating oil in the compressor. The lubricating oil level in the compressor must be above the minimum protective lubricating oil level. When the lubricating oil level in the compressor is lower than the minimum protective lubricating oil level, the compressor should be stopped. [0003] Duplex or even multi-compressor systems have been widely used. In this dual or multi-compressor system, one or more of the compressors can be selectively started and the others can be shut down, so the lubricating oil will move in these compressors and may cause The lubricating oil is unbalanced, and some com...

AI Technical Summary

Problems solved by technology

In this dual or multi-compressor system, one or more of the compressors can be selectively started and the others can be shut down, so the lubricating oil will move in these compressors and may cause The lubricating oil is not balanced, and even some compressors lack lubricating oil

[0004] In addition, no matter in the compressor system composed of a single compressor or in the multi-compressor system composed of multiple compressors, there may be a lack of lubricating oil due to oil leakage in the compressor system or the compressor.

[0005] In addition, in a large-scale refrigeration system, due to the long pipeline length and many components, the lubricating oil may not be circulated back to the compressor in time, causing the compressor to lack lubricating oil.

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