Automobile air compressor with unloading gas storage oil mist separation cavity

Abstract

The invention belongs to the technical field of automobile air compressors, and particularly relates to an automobile air compressor with an unloading gas storage oil mist separation cavity. The automobile air compressor comprises a cylinder cover, a middle plate, a valve plate, and a crankcase; a gas inlet cavity and a gas outlet cavity are arranged between the middle plate and the valve plate; agas inlet and a gas outlet are formed in the cylinder cover and the middle plate; the valve plate is provided with an air inlet hole, an air outlet hole, and a valve block assembly; an unloading airstorage oil mist separation cavity is formed between the cylinder cover and the middle plate; unloading air holes are formed in the valve plate and the middle plate; and a valve assembly is arranged on the valve plate or the middle plate. According to the automobile air compressor with the unloading gas storage oil mist separation cavity, when the air compressor is unloaded, the unloading air holes are communicated through the valve assembly, so that air enters into the unloading air storage oil mist separation cavity from the unloading air holes, and a piston moves upwards to push the air into the unloading air holes so as to push the air into the unloading air storage oil mist separation cavity; and when the piston moves downwards, the air reversely presses on an air cylinder body and the piston along with the piston and seals a gap between the air cylinder body and the piston, so that oil cannot escape.

Description

Technical field: [0001] The invention belongs to the technical field of automobile air compressors, in particular to an automobile air compressor with an unloading gas storage and oil mist separation chamber. Background technique: [0002] Automobile air compressors are widely used in the braking of automobiles, the opening or closing of automobile doors, and tire inflation. Most of the existing commonly used automotive air compressors are reciprocating air compressors, also known as piston air compressors. [0003] Among them, the intake and exhaust principle of the air compressor: the double-cylinder and single-cylinder air compressors for vehicles are the same. The crankshaft drives the connecting rod and the piston reciprocates up and down to generate air pressure for automobiles. When the piston moves downward in the cylinder, the air flows from the air inlet of the cylinder head to the air intake cavity, the air inlet, and then opens the air intake valve, and finally ...

AI Technical Summary

Problems solved by technology

[0005] However, the existing air compressors have carbon deposition problems. The reason for this is that during the operation of the air compressor, the load is only 30%, and the unloading is about 70%. There is an oil ring and two gas rings on the piston. The oil ring is used to lubricate the lubricating oil between the piston and the cylinder. When the load is applied, the piston moves upwards to inflate, and the back pressure of the cylinder compresses the gas to seal the gap between the piston and the cylinder to prevent oil from escaping.

But when unloading, the air enters from the air inlet, and then from the air inlet, there is no air pressure to close the gap between the piston and the cylinder, and the oil is brought out during high-speed operation, and the oil that is brought out will be in the piston. The top cylinder body, exhaust hole, exhaust valve plate, exhaust chamber and other positions, and then enter the air storage tank through the air pipe, need to open the drain valve regularly to release the oil together, but this will pollute the environment

However, the temperature generated during the inflation work is high, and the escaped oil runs for a long time in the vent hole, exhaust valve plate, exhaust cavity and other positions to generate carbon deposits. The accumulation of carbon deposits will make the vent hole smaller and the gas When the specific pressure increases and the gas flow speed increases, the friction of the air flow will generate high temperature, so the gas that is charged is a high-temperature expansion gas, and the effective gas is reduced. Especially when the car is going downhill, frequent braking and insufficient air pressure may cause accidents

[0006] The oil and carbon deposits of vehicle air compressors are also a problem that is difficult to solve with current technologies.

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