Oil-returning channel structure of vehicle-mounted air compressor

Abstract

The present invention relates to the technical field of air compressors, in particular to an oil return passage structure of a vehicle-mounted air compressor, which includes a small end cover and a large end cover that are installed in cooperation with each other, and a cavity is formed between the large end cover and the small end cover. One side of the large end cover has a cylindrical depression to accommodate the oil separation core. There is an oil return hole in the depression. The oil return hole is connected to the oil outlet hole on the opposite side of the large end cover and the small end cover through the oil return passage. The oil return passage There is a one-way filter valve inside. The invention can filter the oil by setting a one-way filter valve in the oil return channel, and because the one-way filter valve only has one-way flow, the oil at the oil return hole can flow back from the oil return channel to the large end cap In the cavity formed with the small end cover, the oil cannot flow from the oil outlet hole of the cavity to the oil return hole, which reduces the amount of oil accumulation at the oil return hole, which also reduces the load on the oil separator core and reduces the Oil content of compressed air.

Description

[0001] Technical field: [0002] The invention relates to the technical field of air compressors, in particular to an oil return passage structure of a vehicle-mounted air compressor. [0003] Background technique: [0004] An air compressor is a device used to compress gas. There are many types of air compressors (air compressors), which can be divided into three categories according to their working principles: volumetric type, power type (speed type or turbine type), and thermal type compressors; they can be divided into oil-free air compressors according to their lubrication methods. Compressor and oil-lubricated air compressor; according to performance, it can be divided into: low noise, variable frequency, explosion-proof and other air compressors; according to application, it can be divided into: refrigerator compressor, air conditioner compressor, refrigeration compressor, oil field compressor, Natural gas filling station, rock drilling machine, pneumatic tools, vehicl...

AI Technical Summary

Problems solved by technology

However, when the machine is shut down, because the pressure in the depression is lower than the pressure in the cavity, a part of the oil will enter the depression from the cavity through the oil return passage, so that the oil will accumulate in the depression, and the oil will be absorbed by the oil separator when the machine is turned on next time, increasing the Reduce the load of the oil separator core, shorten the service life of the oil separator core, and the accumulated oil will be brought into the compressed air, resulting in high oil content in the compressed air

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