William C Howes

US Patent:

8328912, Dec 11, 2012

Filed:

Feb 19, 2010

Appl. No.:

12/708605

Inventors:

Douglas Moore - Epping NH, US
William D. Howes - Danville NH, US
Karli M. Raymond - Freemont NH, US
Paul E. Smith - Chester NH, US

Assignee:

Parker-Hannifin Corporation - Cleveland OH

International Classification:

B01D 53/22

US Classification:

96 8, 95 45, 95 52, 96 4, 96 7, 96 10

Abstract:

An air dryer having an internal orifice designed into an outlet end cap that eliminates the need for external valves or regulators to control the flow of air through the dryer. The internal orifice, which can be press-fit or threaded into the end cap, provides a consistent and stable outlet flow and dew point and eliminates the need for instruments to measure outlet flow and dew point. The orifice size can be easily changed for changing outlet flow and dew point. A protective tubular shroud is provided for shielding a membrane module of the dryer, and for routing sweep gas to a bottom vent.