rotary compressor

Abstract

The invention discloses a rotary compressor, comprising: a casing, a compression device, a motor and an air guide device, the compression device is arranged in the casing; the motor is connected with the compression device to drive the compression device to compress refrigerant; the air guide device is arranged in the compressor On one side of the device adjacent to the motor, the air guiding device is configured such that at least part of the refrigerant discharged from the compression device passes into the air guiding device, and at least part of the refrigerant flows through the air guiding device and the motor and then enters the motor of the casing In the side space away from the compression device. According to the rotary compressor of the present invention, the pressure fluctuation on both sides of the motor is reduced by setting the air guide device, and the lubricating oil separated from the refrigerant can be smoothly returned to the oil pool of the compressor, so that it flows to the motor along with the refrigerant. After the lubricating oil on the upper part is separated in the space on the side away from the compression device of the motor, it is not easy to accumulate at the upper end of the motor, which ensures the oil storage capacity of the oil pool of the rotary compressor.

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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