Integrated connecting rod horizontally-opposed double-piston oil-free air compressor

Abstract

The invention relates to an integrated connecting rod horizontally-opposed double-piston oil-free air compressor. The integrated connecting rod horizontally-opposed double-piston oil-free air compressor comprises a crank-link mechanism, wherein the crank-link mechanism is located in a crankcase and comprises an integrated connecting rod and an eccentric transmission connecting rod assembly; pistons are installed at the two ends of the integrated connecting rod correspondingly; the integrated connecting rod is rotationally connected with the eccentric transmission connecting rod assembly; and the eccentric transmission connecting rod assembly is connected with a main shaft of a driving motor so as to convert the rotational motion of the driving motor into the linear reciprocating translational motion of the integrated connecting rod. According to the integrated connecting rod horizontally-opposed double-piston oil-free air compressor, through the arrangement of the integrated connecting rod and the eccentric transmission connecting rod assembly, the eccentric transmission connecting rod assembly converts the rotational motion of the driving motor into the linear translational motion of the integrated connecting rod, the swing of the pistons in the working process is converted into the direct-acting translational motion, and therefore the change of the compression amount of piston rings is avoided, that is, the problems of accelerated abrasion, eccentric abrasion and leakage increase are avoided.

Description

technical field [0001] The invention relates to the technical field of air compressors, in particular to an oil-free air compressor with horizontally opposed double-pistons with integrated connecting rods. Background technique [0002] As a device that converts the mechanical energy of the prime mover into gas pressure energy, the air compressor realizes the increase of air pressure through the change of volume or centrifugal force. At present, the traditional type of piston oil-free air compressors mostly adopts the swinging piston structure design, that is, WOB-L. The piston of this type of air compressor will swing during the compression and suction strokes, which will cause many problems. One is that the compression amount of the piston ring (skin bowl-shaped structure) will change periodically. On the one hand, this will lead to accelerated wear and eccentric wear of the piston ring. On the other hand, with the occurrence of eccentric wear, the piston will The leakage ...

AI Technical Summary

Problems solved by technology

At present, the traditional type of piston oil-free air compressors mostly adopts the swinging piston structure design, that is, WOB-L. The piston of this type of air compressor will swing during the compression and suction strokes, which will cause many problems. One is that the compression amount of the piston ring (skin bowl-shaped structure) will change periodically. On the one hand, this will lead to accelerated wear and eccentric wear of the piston ring. On the other hand, with the occurrence of eccentric wear, the piston will The leakage of the ring will gradually increase with wear; on the other hand, due to the swing of the piston, in order to avoid the occurrence of the top cylinder, its stroke is incomplete, that is to say, the clearance of the air compressor is large, resulting in air compression The efficiency of the machine is low; in addition, due to the swing of the piston, the swing angle is too large or cause serious leakage and partial wear. In order to control the swing angle, the stroke of the piston is small when the size of the connecting rod is constant. In order to improve the stroke, Can only increase the size of the connecting rod, resulting in the problem of the air compressor being too large and too heavy

For horizontally opposed double-piston oil-free air compressors, at this stage, the method of axially stacking single-piston crankshaft connecting rod and piston assemblies is mostly used. The problem with this design is that the crankshaft connecting rod and piston With the superposition of components, the weight of movable parts is also superimposed, so the inertial force during the operation of the air compressor is also doubled, which leads to the increase of the vibration intensity of the air compressor; the second is due to the superimposed crankshaft The rod and piston assembly are not in the same plane, which will generate additional couple moments, which will also lead to an increase in the vibration intensity of the air compressor

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