An oil suction pipe connection structure of an oil supply crankshaft and its closed reciprocating compressor

Abstract

The invention discloses an oil suction pipe connecting structure for an oil supply crankshaft. The oil suction pipe connecting structure comprises the crankshaft and an oil suction pipe; the lower part of the axial center of the crankshaft is provided with a main oil hole; the upper part of the outer wall of the crankshaft is provided with a spiral oil groove; a wall oil hole for communicating the main oil hole and the spiral oil groove is radially formed between the main oil hole and the spiral oil groove; the center of a crank of the crankshaft is provided with an oil storage groove; the crank is radially provided with an oil scattering groove hole communicated with the oil storage groove; the oil suction pipe is buckled on the outer wall of the lower part of the crankshaft or the inner wall of the main oil hole in the lower part of the crankshaft, and the top of the oil suction pipe and the lower part of the crankshaft, which correspond to each other, are respectively provided with a bulge part and a sunken part which are fastened to connect the top of the oil suction pipe and the lower part of the crankshaft; the interference fit in a cold pressing mode is avoided between the oil suction pipe and the main oil hole of the crankshaft, the normal oil suction function of the oil suction pipe is ensured, impurities such as scrap iron caused by the interference fit in the main oil hole of the crankshaft can be avoided, and potential safety hazards in the using process are eliminated. The invention also discloses an enclosed reciprocating compressor.

Description

【Technical field】 [0001] The invention relates to an oil supply mechanism of a compressor, in particular to an oil suction pipe connection structure of an oil supply crankshaft and a closed reciprocating compressor thereof. 【Background technique】 [0002] Hermetic compressors have an oil supply mechanism. The oil supply mechanism is used to provide sufficient lubricating oil, reduce the friction of the friction pair and take away the friction heat when the compressor is working, reduce the noise of the compressor, and at the same time seal the gap to ensure The compressor works normally and runs for a long time. In the prior art, the connection between the oil suction pipe and the crankshaft on the oil supply mechanism mainly adopts interference fit, and the oil suction pipe is fixed to the lower end of the crankshaft by interference friction. In the specific process, the oil suction pipe is press-fitted to the Therefore, after the oil suction pipe is pressed into the cente...

AI Technical Summary

Problems solved by technology

In the prior art, the connection between the oil suction pipe and the crankshaft on the oil supply mechanism mainly adopts interference fit, and the oil suction pipe is fixed to the lower end of the crankshaft by interference friction. In the specific process, the oil suction pipe is press-fitted to the Therefore, after the oil suction pipe is pressed into the center hole at the lower end of the crankshaft, due to the existence of interference, there will be iron cutting or burrs in the center hole of the crankshaft, and it cannot be brushed, which will cause impurities to compress There are serious safety hazards in machine performance

At the same time, the cold pressing method needs to be supported by other parts of the crankshaft. When the pressure is too large, the crankshaft will be deformed and damaged.

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