Piston compressor introduction
When the crankshaft rotates, the piston reciprocates through the transmission of the connecting rod, and the working volume formed by the inner wall of the cylinder, the cylinder head and the top surface of the piston periodically changes. When the piston starts moving from the cylinder head, the working volume in the cylinder gradually increases. At this time, the gas is pushed along the intake pipe, pushing the intake valve into the cylinder until the working volume becomes maximum, and the intake valve is closed. When the piston moves in the reverse direction, the working volume in the cylinder is reduced, and the gas pressure is increased. When the pressure in the cylinder reaches and is slightly higher than the exhaust pressure, the exhaust valve is opened, and the gas is discharged from the cylinder until the piston moves to the limit position. The valve is closed. The above process occurs repeatedly when the piston moves in the opposite direction. In short, the crankshaft rotates once, the piston reciprocates once, and the process of intake, compression, and exhaust is successively performed in the cylinder, that is, a working cycle is completed.