Horizontal totally-closed three-stage compression rotary compressor

Abstract

The invention discloses a horizontal totally-closed three-stage compression rotary compressor. The horizontal totally-closed three-stage compression rotary compressor comprises a main cover, an outer cylinder, low-pressure sliding sheets, high-pressure sliding sheets, a main rotor, a main shaft, a driving disc, an inner cylinder and the like. The main cover and an auxiliary cover are oval. The outer cylinder is an internally-through and hollow oval barrel. The inner cylinder is an internally-through and hollow oval barrel. Key grooves are formed in the cross position of the portion, matched with the main cover, of the inner cylinder, and the main cover and the inner cylinder are fixedly connected through four connecting keys arranged in the key grooves. The driving disc is composed of a round base disc and a hollow cylindrical side wall integrated with the round base disc. Low-pressure sliding sheet grooves are evenly formed in the four diagonal directions of the side wall in the radial direction, and the low-pressure sliding sheets are arranged in the low-pressure sliding sheet grooves. The main rotor is cylindrical, high-pressure sliding sheet grooves are evenly formed in the four diagonal directions of the main rotor in the radial direction, and the high-pressure sliding sheets are arranged in the high-pressure sliding sheet grooves. The compressor is simple in part, small in appearance size, compact in structure, small in occupied space, convenient to machine and assemble, good in sealing performance, safe and reliable, and energy saving and environment friendliness are achieved.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to a horizontal fully enclosed three-stage compression rotary compressor. Background technique [0002] When the temperature in the cooled space of the refrigeration device is low, the evaporating temperature of the refrigeration system is low. If a single-stage compression or two-stage compression refrigeration cycle is used to meet the temperature requirements in the cooled space, the performance of the refrigeration system will decrease, and the energy can be reduced. consumption increases and reliability decreases. A three-stage compression refrigeration cycle can be used. At present, the three-stage compression volumetric compressor refrigeration system adopts the form of multiple volumetric compressors, and different refrigeration compressors undertake the compression of low temperature, medium temperature and high temperature respectively. , the refrigerating cycle sys...

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Problems solved by technology

[0002] When the temperature in the cooled space of the refrigeration device is low, the evaporating temperature of the refrigeration system is low. If a single-stage compression or two-stage compression refrigeration cycle is used to meet the temperature requirements in the cooled space, the performance of the refrigeration system will decrease, and the energy can be reduced. consumption increases, reliability decreases

A three-stage compression refrigeration cycle can be used. At present, the three-stage compression volumetric compressor refrigeration system adopts the form of multiple volumetric compressors, and different refrigeration compressors undertake the compression of low temperature, medium temperature and high temperature respectively. , the refrigerating cycle system is complex and the external dimensions are large, therefore, a single-unit three-stage compression horizontal fully-enclosed rotary compressor with compact structure, small external dimensions and good sealing performance is proposed

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