The gas valve consists of a valve seat, valve plates and springs.
Its working principle is as follows: During the suction stage, the piston moves downward, creating a negative pressure in the cylinder. The suction valve opens under the action of the spring's elastic force, and external gas is drawn into the cylinder. At this time, the exhaust valve remains closed.
During the compression stage, the piston moves upward, compressing the gas in the cylinder and increasing its pressure. When the pressure exceeds the spring force of the exhaust valve, the exhaust valve opens, while the suction valve closes tightly because the pressure in the cylinder is higher than the external pressure.
During the exhaust stage, the piston continues to move upward, and high - pressure gas is discharged from the cylinder through the exhaust valve. When the piston reaches the top dead center and starts to move downward, the pressure in the cylinder drops, and the exhaust valve closes under the action of the spring, ready for a new suction process.
The functions of the gas valve are: - Controlling gas flow: Precisely controlling the intake and exhaust of gas in the compressor to ensure that the gas flows according to the predetermined working cycle.
- Sealing gas: Effectively preventing gas leakage when the gas valve is closed, ensuring the compression efficiency and performance of the compressor.
- Adjusting gas volume: By adjusting the opening and closing frequency and time of the gas valve, the exhaust volume of the compressor can be adjusted to meet the gas demand under different working conditions.
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