1. Cold, Low Pressure – Entering Gas. Compression in the scroll is created by the interaction of the orbiting spiral and a stationary spiral. Gas enters the outer opening as one of the spirals orbits.
2. Warmer, Medium Pressure – Interim Gas. The open passage is sealed off as gas is drawn into the spiral.
3. Hot, High Pressure – Discharge Gases. As the spiral continues to orbit, the gas is compressed into an increasingly smaller pocket. By the time the gas arrives at the center port, discharge pressure has been reached.
4.All Stages Working Together. During operation, all six gas passages are in various stages of compression at all times, resulting in nearly continuous suction and discharge.
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