ROBERT A CROMIS
Engineers in York, PA
License number
Pennsylvania PE002151E
Category
Engineers
Type
Professional Engineer
Address
Address
York, PA 17402
Personal information
See more information about ROBERT A CROMIS at radaris.comName
Address
Phone
3558 Cimmeron Rd, York, PA 17402
York, PA
3558 Cimmeron Rd, York, PA 17402
1407 Ridgeview, Danville, PA 17821
Professional information
Oil Recovery System For Low Capacity Operation Of Refrigeration Systems
US Patent:
5086621, Feb 11, 1992
Filed:
Dec 27, 1990
Appl. No.:
7/634526
Inventors:
Keith E. Starner - York PA
Robert A. Cromis - York PA
Robert A. Cromis - York PA
Assignee:
York International Corporation - York PA
International Classification:
F25B 4302
US Classification:
62 84
Abstract:
An oil recovery system for refrigeration apparatus of the type in which an oil lubricated screw compressor is oriented with a suction inlet in communication with an evaporated chamber positioned under the compressor so that under conditions of low capacity compressor operation, lubricating oil may fall from the compressor through the suction inlet thereof and into the evaporator. The recovery system takes advantage of an existing suction distribution tray in the upper region of the evaporator chamber of such systems, normally used to assure distribution of gaseous refrigerant to the suction inlet of the compressor, by removing oil dropping into the tray and returning it back to the compressor. An existing by-pass eductor loop for returning liquid refrigerant from the evaporator to the compressor is extended by a valve controlled branch to a second eductor for withdrawing the oil from the tray and returning it to the compressor. The valve is controlled so that the oil recovery system is disabled at normal compressor capacity levels.