Reciprocating piston compressor is the development of various types of compressors the earliest, the 1500 BC China invented wood bellows for reciprocating piston compressor prototype. At the end of 18th century, Britain made the first industrial reciprocating piston air compressor. The 1930s began to appear labyrinth compressors, followed by a variety of oil-free lubrication compressors and diaphragm compressors. In the 50 's the appearance of the dynamic structure of large reciprocating piston compressor size greatly reduced, and realized a single machine more use.
Reciprocating piston compressors have a variety of classification methods.
①According to the transmission mode is divided into shaft drive and non shaft drive two categories. The shaft-driven reciprocating piston compressor is divided into two kinds, the crankshaft drive and the non crank drive. In the crankshaft-driven class, a reciprocating piston compressor with no crosshead rotates directly through the connecting rod to make reciprocating movement in the cylinder; the other is a reciprocating piston compressor with a crosshead, and the connecting rod is driven by a cross head to make reciprocating movement. Non-axial reciprocating piston compressors usually refer to free piston compressors and electromagnetic drive piston compressors. Electromagnetic drive is driven by the rotor of the linear motor directly under the action of magnetic force piston in the cylinder reciprocating movement, so as to achieve the compressed gas.
②The function of piston in cylinder is divided into single action, double action and differential type.
③Compressed by gas in the cylinder, divided into single-stage compression and multi-stage compression.
④According to the cylinder whether oil lubrication, distinguish between oil lubrication and oil-free lubrication two kinds.
⑤According to the layout of the cylinder to distinguish the vertical structure (vertical layout of the cylinder) and horizontal structure (cylinder level layout) two. In the horizontal structure, the cylinder level is arranged on both sides of the crankshaft. A structure called a pair of movable compressors with opposite or opposite motions at the same time; the cylinder is arranged horizontally on both sides of the crankshaft, but the opposite two columns are the same or non opposite movement of the structure is called the alignment type; there is an angle-type compressor between the centerline of the cylinder.