Compressed air filter assembly
AssigneeGraham-White Sales Corporation
InventorVirgil L. Frantz
Life of this patent
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Abstract
An assembly connectable between a compressor and reservoir, having a filter unit capable of centrifugally cooling and separating condensed moisture and other contaminants from compressed air and discharging clean air in saturated condition at the outlet temperature and pressure, the unit being connected to the compressor through an inlet valve opening when the compressor begins pumping and to the reservoir through a pressure regulator valve adjustable to open only when the air in the unit reaches a predetermined pressure, which, for minimizing the absolute moisture content of the clean air passed to the reservoir, usually will be substantially maximum reservoir pressure.
Claims15
A filter assembly for a compressed air system having a reservoir and a compressor responding in pumping and idling cycles respectively to minimum and maximum predetermined pressures in the reservoir, said assembly comprising filter unit means connected between the compressor and reservoir for filtering air received from the compressor during the pumping cycle, outlet valve means for passing filtered air from said filter unit means to the reservoir only when said air is at a pressure above said maximum reservoir pressure, and means for reducing to saturation at the pressure in said filter unit means the moisture content of air passed therefrom.
A filter assembly for a compressed air system having a reservoir and a compressor responding in pumping and idling cycles respectively to minimum and maximum pressures in the reservoir, said assembly comprising filter unit means connected between the compressor and reservoir for filtering contaminants from air received from the compressor during the pumping cycle, outlet pressure regulator valve means for preventing backflow of air from the reservior to said filter means and adjustable for regulating above said maximum reservoir pressure the pressure at which filtered air can pass therethrough from said filter unit means to the reservoir during the pumping cycle, and means for reducing to saturation at the pressure in said filter unit means the moisture content of air passed therefrom.
Dependencies are inferred from the claim text.