A compressor oil pump structure, compressor and refrigeration equipment

Abstract

The invention discloses a compressor oil pumping structure, a compressor and refrigeration equipment, comprising: a crankshaft, an oil inlet hole is arranged at the tail of the crankshaft, the oil inlet hole is offset relative to the axis of the crankshaft, and an oil inlet hole is arranged on the outer peripheral surface of the crankshaft tail There is a clamping groove, and the crankshaft forms a clamping boss between the clamping groove and the end surface of the tail, and an exhaust through hole is set on the clamping boss and / or the clamping groove, and the exhaust through The hole is connected to the oil inlet hole, and the exhaust through hole is located on the opposite side of the offset of the oil inlet hole; the oil suction pipe is sleeved at the tail of the crankshaft, and the oil suction pipe shrinks radially, Compressed in the clamping groove of the crankshaft, the oil suction pipe is provided with a clamping structure clamped in the exhaust through hole. The structure is simple, the installation and connection of the oil suction pipe is reliable, it will not fall off, and there will be no relative rotational movement; the inner diameter of the oil suction pipe can be made the largest. Therefore, the compressor can obtain the maximum oil pumping capacity, the friction pair is safe and reliable, and the service life of the compressor is well guaranteed.

Description

technical field [0001] The invention is used in the field of compressors, and particularly relates to a compressor oil pump structure, a compressor and a refrigeration equipment. Background technique [0002] When the refrigeration compressor is working, the moving parts rotate at high speed. In order to ensure the life and sealing performance of the moving parts, the friction pair needs to be lubricated enough. Therefore, there is an oil pump in the compressor, which is driven by the high-speed rotating crankshaft to generate enough centrifugal force, the so-called lift, to lift the lubricating oil in the oil pool of the lower shell of the compressor and transport it to each part of the compressor core. In the friction pair of the moving parts, it plays the functions of lubrication and sealing. The lift of the oil pump is related to the inner diameter and rotational speed of the oil pump. The pumping capacity of the oil pump is related to the head and the length of the oi...

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Problems solved by technology

The two methods are interference fit to assemble the oil suction pipe parts. In the first method, the oil suction pipe is squeezed into the first-stage oil inlet hole in a way that the diameter becomes smaller. The oil suction pipe cannot rebound or loosen, so the assembly is tight and the connection is reliable. , while in method 2, the oil suction pipe is set on the outer surface of the crankshaft in a way that the diameter becomes larger. The compressor works for a long time. After long-term vibration, repeated heating and cooling, the oil suction pipe will rebound and loosen, resulting in The components rotate relative to the crankshaft or even fall off, the oil pump fails to work, the compressor loses its ability to pump oil, the moving parts cannot be lubricated, and the friction pairs are worn and stuck, causing the compressor to be scrapped

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