Rotary compressor

Abstract

The invention discloses a rotary compressor. The rotary compressor comprises a shell, a compression device, a motor and a gas guiding device, wherein the compression device is arranged in the shell, the motor is connected with the compression device to drive the compression device to compress refrigerants, the gas guiding device is arranged at one side, close to the motor, of the compression device, and at least part of the refrigerants outgoing from the compression device is introduced into the gas guiding device, and enters a space on one side, away from the compression device, of the motor in the shell, after passing through the gas guiding device and the motor. According to the rotary compressor, the pressure fluctuation at two sides of the motor is reduced due to the arrangement of the gas guiding device, and lubricating oil separated from the refrigerants can smoothly returns to an oil pool of the compressor, so that the lubricating oil flowing to the upper part of the motor along with the refrigerants is difficult to pile up at the upper end of the motor after being separated in the space on one side, away from the compression device, of the motor, and the oil reserve of the oil pool of the rotary compressor is ensured.

Description

technical field [0001] The invention relates to the field of refrigeration equipment, in particular to a rotary compressor. Background technique [0002] It is pointed out in related technologies that the frequency conversion compressor has a wide operating range. At present, the highest frequency of the compressor generally reaches 120 Hz, and even some manufacturers' products can reach 150 Hz. At such a high frequency, the pressure in the space above and below the motor drive part of the compressor tends to fluctuate, that is, if the pressure fluctuates greatly, it will easily cause oil accumulation on the upper part of the compressor motor. Once oil accumulates in the compressor, it will reduce the oil storage capacity in the lower oil pool of the compressor, which will affect the reliability of the moving parts of the compressor, and even cause the compressor to burn out. [0003] In addition, after the operating frequency of the compressor increases, the exhaust volume...

AI Technical Summary

Problems solved by technology

At such a high frequency, the pressure in the space above and below the motor drive part of the compressor tends to fluctuate, that is, if the pressure fluctuates greatly, it will easily cause oil accumulation on the upper part of the compressor motor

Once oil accumulates in the compressor, it will reduce the oil storage capacity in the lower oil pool of the compressor, which will affect the reliability of the moving parts of the compressor, and even cause the compressor to burn out

[0003] In addition, after the operating frequency of the compressor increases, the exhaust volume per unit time increases. Under the same compressor structure, the refrigerating machine oil in the exhaust airflow cannot be effectively separated, and will be discharged together with the exhaust airflow to the Excessive oil discharge occurs outside the compressor housing

When the oil output of the compressor is too large, it will also reduce the oil storage capacity of the oil pool in the lower part of the compressor, which will affect the reliability of the moving parts of the compressor, and even burn the compressor in severe cases.

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