Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1973-09-17
1976-02-10
Hart, Charles N.
Gas separation
Means within gas stream for conducting concentrate to collector
55316, 55DIG17, B01d 5304
Patent
active
039376222
ABSTRACT:
This invention relates to apparatus for periodically automatically purging the contaminants from a filter unit of a compressed air system to reactivate the filtering medium in the filter unit during the time that an air compressor for supplying air under pressure to the system is operating unloaded or is stopped. The cleansing and reactivating apparatus comprises a purge reservoir disposed on the downstream side of the filter unit and valve means under the control of a compressor governor to automatically effect the supply of fluid under pressure from the purge reservoir to a fluid pressure operated combined compressor unloading and backflow vent valve device to automatically respectively cause unloading of the compressor upon the stopping there of and backflow of substantially dry air from the purge reservoir through the filtering medium, such as a desiccant in the filter unit, and this valve device to atmosphere until the pressure in the purge reservoir, and therefore, the operating pressure for this valve device, is reduced to a chosen low value. The conduit through which fluid under pressure flows from the discharge of the compressor to the inlet of the filter unit is so connected to the backflow pathway from the purge reservoir to atmosphere that the pressure in this conduit is reduced simultaneously with that in the purge reservoir as the fluid under pressure in this reservoir is released to atmosphere by backflow through the desiccant in the filter unit.
REFERENCES:
patent: 3080693 (1963-03-01), Glass et al.
patent: 3147095 (1964-09-01), Kanuch
patent: 3472000 (1969-10-01), Glass et al.
patent: 3696588 (1972-10-01), Dussourd et al.
Hewitt William J.
Shirey Frank W.
Wilson Mortimer D.
Burks Richard W.
Hart Charles N.
McIntire, Jr. R. W.
Poore W. F.
Westinghouse Air Brake Company
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