Crankshaft components, pump body components, compressors, air conditioners

Abstract

The invention provides a crankshaft assembly, a pump body assembly, a compressor and an air conditioner. The crankshaft assembly includes a thrust end surface, and the thrust end surface has a lubricating ring belt, the lubricating ring belt is arranged around the axis of the crankshaft body, and in the radial direction of the crankshaft body, the lubricating ring belt has There are a plurality of texture grooves, and the depths of the plurality of texture grooves increase in a direction from a side close to the axis of the crankshaft body to a side away from the axis of the crankshaft body. According to a crankshaft assembly, a pump body assembly, a compressor, and an air conditioner of the present invention, the gap between the thrust end face of the crankshaft and the mating part will gradually decrease from the inside to the outside along the radial direction of the crankshaft body, forming a target for The converging wedge shape of the fluid improves the bearing capacity of the fluid film and ensures the stability of the lubricating state of the thrust end face.

Description

technical field [0001] The invention belongs to the technical field of crankshaft manufacturing, and specifically relates to a crankshaft assembly, a pump body assembly, a compressor and an air conditioner. Background technique [0002] The end face wear of pump body parts is a common failure form of rotary compressors. For example, the mating end faces of the crankshaft thrust end face and the flange end cover often occur in the form of abrasive particles, adhesion, fatigue and other wear forms, which have a negative impact on the life and reliability of the compressor. Negative Effects. During the normal and stable operation of the compressor, the thrust end face of the crankshaft is generally in a state of fluid lubrication. However, due to changes in operating conditions or external disturbances, the bearing capacity of the lubricating oil film is limited and cannot effectively resist external impact, which can easily cause the oil film to rupture, forcing the matching e...

AI Technical Summary

Problems solved by technology

[0002] The end face wear of pump body parts is a common failure mode of rotary compressors. For example, the thrust end face of the crankshaft and the matching end face of the flange end cover often occur in the form of abrasive particles, adhesion, fatigue and other wear forms, which have a negative impact on the life and reliability of the compressor. Negative Effects

During the normal and stable operation of the compressor, the thrust end face of the crankshaft is generally in a state of fluid lubrication, but due to changes in operating conditions or external disturbances, the bearing capacity of the lubricating oil film is limited and cannot effectively resist external impacts, which can easily cause the oil film to rupture, forcing the mating end face Rapidly enter the state of mixed lubrication or boundary lubrication, and the phenomenon of increased friction coefficient and severe wear occurs

In order to solve this problem, the traditional theory holds that the smoother the surface of the friction pair, the better the friction performance. However, recent theoretical research and engineering practice have shown that the smoother the surface of the moving friction pair, the better, and a certain surface roughness is conducive to lubrication. The formation of the oil film reduces the friction and wear of the moving friction pair, and the formation of the aforementioned oil film is based on the dynamic pressure or static pressure effect of the lubricating oil on the mating surface of the moving friction pair. The way of setting at least one textured groove structure of equal depth is to ensure the flow dynamic pressure of lubricating oil, but the dynamic pressure effect of this textured groove structure only comes from the micropore itself, and there is no end face convergence. The additional static pressure and dynamic pressure of the crankshaft, especially when the crankshaft is under high-speed and heavy-load conditions, the bearing capacity of the lubricating film is insufficient, and it is extremely difficult to form a stable fluid lubrication state

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