Piston compressor

Piston compressor The work of the piston compressor is completed by the working volume composed of the cylinder, the air valve and the piston reciprocating in the cylinder. If the volume loss and energy loss (that is, the ideal working process) of the actual operation of the piston compressor are not considered, the work completed by the piston compressor crankshaft every revolution can be divided into the suction, compression, and exhaust processes. Working principle of piston compressor Compression process: The piston moves upward from the bottom dead center, the suction and exhaust valves are closed, and the gas is compressed in the closed cylinder. As the cylinder volume gradually decreases, the pressure and temperature gradually increase until the gas pressure and exhaust in the cylinder The pressure is equal. The compression process is generally regarded as an isentropic process. Exhaust process: The piston continues to move upwards, so that the gas pressure in the cylinder is greater than the exhaust pressure, then the exhaust valve is opened, and the gas in the cylinder is pushed out of the cylinder into the exhaust pipe under equal pressure by the piston until the piston moves to the top point. At this time, due to the spring force of the exhaust valve and the gravity of the valve plate, the exhaust valve is closed and the exhaust is completed.

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