Roanoke Times
                 Copyright (c) 1995, Landmark Communications, Inc.

DATE: SUNDAY, May 7, 1990                   TAG: 9005280167
SECTION: HOMES                    PAGE: ?????????????????   EDITION: EVENING 
SOURCE: 
DATELINE:                                 LENGTH: Short

SCROLL GAS FLOW

Compression in the scroll is created by the interaction of an orbiting spiral and a stationary spiral. Gas enters an outer opening as one of the spirals orbits.

The open passage is sealed off as gas is drawn into the spiral.

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 pressured has been reached.

Actually, during operation, all six gas passages are in various stages of compression at all times, resulting in nearly continuous suction and discharge. Scroll gas flow

Compression in the scroll is created by the interaction of an orbiting spiral and a stationary spiral. Gas enters an outer opening as one of the spirals orbits.

The open passage is sealed off as gas is drawn into the spiral.

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 pressured has been reached.

Actually, during operation, all six gas passages are in various stages of compression at all times, resulting in nearly continuous suction and discharge.