Double-two-stage rolling rotor type compressor and air conditioning system

Abstract

The invention discloses a double-two-stage rolling rotor type compressor and an air conditioning system. The compressor comprises a shell, a first two-stage compression unit and a second two-stage compression unit, wherein the first two-stage compression unit and the second two-stage compression unit are arranged in the shell; the first two-stage compression unit performs first-stage compression and second-stage compression on an introduced low-temperature and low-pressure refrigerant to obtain a high-temperature and high-pressure refrigerant and discharges the high-temperature and high-pressure refrigerant; and the second two-stage compression unit performs first-stage compression and second-stage compression on an introduced low-temperature low-pressure refrigerant to obtain a high-temperature high-pressure refrigerant and discharges the high-temperature high-pressure refrigerant. The directions of the low-temperature and low-pressure refrigerants introduced into the first two-stage compression unit and the second two-stage compression unit are opposite, and the directions of low-temperature and low-pressure refrigerants which flow out of the first two-stage compression unit and the second two-stage compression unit and are subjected to first-stage compression are opposite. The refrigerating capacity and the volume efficiency of the compressor are improved, the exhaust temperature of the refrigerants after second-stage compression is reduced, and the stress state of a crankshaft is improved.

Description

technical field [0001] The invention relates to the field of air conditioning, in particular to a double-two-stage rolling rotor compressor and an air-conditioning system. Background technique [0002] A compressor is a fluid machine that raises low-pressure gas to high-pressure gas, and is the heart of the refrigeration system. Among them, the rolling rotor compressor utilizing rotational force occupies a dominant position in small-capacity air-conditioning units due to its relatively low manufacturing cost and relatively high performance. [0003] With the further expansion of the displacement of the rotary roller compressor and the development of the downstream application market, competition in the price and technology of light commercial air-conditioning compressor products has been full of smoke, but the current situation is that 5 and above commercial However, the compressor market is still dominated by scroll compressors because they have advantages in terms of capa...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a dual-stage rolling rotor compressor and an air-conditioning system to solve the problem of unbalanced gas resultant force on the crankshaft of the compressor in the prior art, to improve the stressed state of the crankshaft, and to reduce the wear of the crankshaft. Thereby the purpose of improving the reliability of the compressor; simultaneously the present invention can also realize the refrigerating capacity of greatly raising compressor, has improved the volumetric efficiency of compressor; Also can reduce secondary compression suction temperature and exhaust temperature, improve Performance and Purpose of Air Conditioning Performance

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