Rotary compressor and refrigerating circulating system with same

A technology of rotary compressors and compression chambers, applied in the direction of rotary piston machines, compressors, rotary piston pumps, etc., can solve the problem of high operating pressure, achieve the effects of preventing overcompression, improving exhaust efficiency, and small differences
CN103775338AActive Publication Date: 2014-05-07GUANGDONG MEIZHI COMPRESSOR
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGDONG MEIZHI COMPRESSOR
Publication Date
2014-05-07

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Abstract

The invention discloses a rotary compressor and a refrigerating circulating system with the same. The rotary compressor comprises a shell, a compression device and a motor, wherein the compression device comprises a first cylinder and a second cylinder which are provided with a first compression cavity and a second compression cavity respectively, a middle partition plate, a first piston, a second piston, a first slip sheet, a second slip sheet, a crankshaft for driving the first piston and the second piston to rotate, a main bearing, an auxiliary bearing, a first exhaust silencer arranged above the main bearing, a second exhaust silencer arranged below the auxiliary bearing, and an exhaust assembly for exhausting high-pressure refrigerants in the first exhaust silencer and the second exhaust silencer. According to the rotary compressor, due to the exhaust assembly, the exhaust efficiency is improved, the volumetric efficiency is improved and overcompression is prevented; in addition, the difference of oil supply amounts of two compression cavities is minimized, the compression efficiency reduction caused by leakage of the refrigerants is prevented and the reliability of sliding parts is improved.
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Description

technical field

[0001] The invention relates to a two-cylinder rotary compressor whose inner pressure of the casing is a low pressure side, and specifically relates to a rotary compressor and a refrigeration cycle system with the same. Background technique

[0002] Equipment equipped with a rotary compressor is widespread all over the world. Basically, all of the rotary compressors have the internal pressure of the casing as the high-pressure side. This is because the high-pressure rotary compressor has advantages in energy efficiency, cost, compactness, and oil control. is advantageous. On the other hand, from the viewpoint of protecting the global environment, the use of natural refrigerants such as CO2 and HC has attracted widespread attention, and plans to apply HC refrigerants to rotary compressors are also being advanced.

[0003] However, the operating pressure of CO2 is very high. In the rotary compressor on the high-pressure side of the shell, the pressure resistan...

Claims

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