Enclosed compressor for refrigeration agent for air conditioner or refrigerator

Abstract

The invention aims at providing a filter screen which is assembled in a compressor to prevent the pressure loss increase of refrigerant agent caused by the passing area reduction of the filter screen, and prevent the reduction of the compressor performance. The inventive sealed compressor for the refrigerant agent of an air conditioner or a refrigeration machine includes a compressing mechanism, a bearing member (10) for bearing the compressing mechanism, a box (2) for receiving a motor (20) for driving the compressing mechanism, wherein a suction inlet for sucking the refrigerant agent gas which is guided by piping to the box from the refrigerant agent is arranged on the box, the suction inlet of the box is provided with the filter screen (19) which has larger outer diameter than that of the piping for sucking the refrigerant agent, and a fixed flange, the filter screen is fixed on the box for connecting a connection flange (24) which integrates with the piping for the suction of the refrigerant agent with the fixed flange.

Description

technical field [0001] The present invention relates to a refrigerant hermetic compressor used for, for example, an air conditioner or a refrigerator. Background technique [0002] In the refrigeration cycle, there are foreign substances such as copper powder and iron powder that cannot be completely removed during cleaning before use. If the hermetic compressor for refrigerant that is a component of the refrigeration cycle sucks refrigerant gas containing these foreign substances, it will damage the electric wire covering part of the motor that drives the compression mechanism, and reduce the insulation. In addition, if these foreign substances are mixed into the lubricating oil, the bearing raceways and rolling surfaces that support the compression mechanism will be damaged, and the life of the bearings will be significantly reduced. In order to prevent the reliability of the compressor from being reduced due to the inhalation of these foreign substances, a common method...

AI Technical Summary

Problems solved by technology

On the other hand, when the filter is assembled inside the compressor, there are advantages such as simplifying the refrigerant cycle and improving the maintainability of the compressor. However, since the filter is sandwiched by the connecting flange integrated with the refrigerant suction pipe Therefore, the passage area of ​​the filter cannot be set to exceed the outer diameter of the refrigerant suction pipe.

That is, when the filter is installed inside the compressor, the pressure loss of the refrigerant gas increases due to the reduction of the passage area of ​​the filter, and as a result, the circulation amount of the refrigerant decreases and the performance of the compressor decreases.

Images