A compressor crankshaft

Abstract

The present invention relates to the field of compressors, in particular to a compressor crankshaft. A crankshaft is fixed below the main shaft, an eccentric part is fixed at the bottom of the crankshaft, an oil inlet passage is arranged inside the eccentric part, and an oil storage is arranged inside the crankshaft. cavity, the main shaft is provided with a main oil passage, the bottom of the main oil passage is connected to the aforementioned oil storage chamber, and the oil inlet passage is connected to the upper end surface of the aforementioned oil storage chamber through an oil passage, and the oil passage is inverted U-shaped structure, the outer end surface of the main shaft is also provided with an oil groove, the oil groove is spirally arranged around the main shaft, the oil groove is connected with the aforementioned main oil circuit through a plurality of oil holes, and a plurality of oil grooves connected with the oil groove are also arranged on the main shaft A blind hole, a tapered groove is arranged on the main oil road, and a support ring is fixed in the main shaft above the tapered groove. After the lubricating oil falls back, the oil storage chamber is full of lubricating oil and the oil passage is in a vacuum state. When the main shaft rotates, the lubricating oil is directly extracted and then reaches the main oil passage to realize rapid oiling.

Description

technical field [0001] The invention relates to the field of compressors, in particular to a compressor crankshaft. Background technique [0002] The compressor usually includes a closed casing, a compression pump body, a motor assembly, a crankshaft, a gas-liquid separator, a suction pipe and an exhaust pipe. The stator and the rotor form the motor assembly of the compressor, and the compression pump body includes a cylinder, an upper flange, a lower flange and a roller fixed on the eccentric part of the crankshaft. When working, the rotor rotates inside the stator, and drives the roller to roll eccentrically in the cylinder through the rotating shaft. Under the eccentric rolling action of the roller, the low-pressure refrigerant is sucked into the cylinder through the suction pipe for compression until it is compressed to the pressure. When the critical pressure is exceeded, it is output to the heat exchange system through the exhaust pipe. [0003] Refrigerant oil is st...

AI Technical Summary

Problems solved by technology

However, when the compressor starts to work, before the crankshaft speed is high enough, the moving parts of the movement are dry and there is no lubricating oil for lubrication, resulting in large starting friction resistance and difficult starting. Therefore, the motor in the compressor is required to have a large starting torque

At the same time, since there is no lubricating effect of lubricating oil for a long time after starting, it is easy to cause serious wear and tear and reduce the working life of the compressor

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