The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 03, 1991
Filed:
Jul. 10, 1990
John M Champagne, Seattle, WA (US);
Sundstrand Corporation, Rockford, IL (US);
Abstract
A refrigeration system (300) having a compressor (12) with a rotor (20) rotatably supported by a plurality of hydrodynamic bearings (22, 24) lubricated by oiless pressurized liquid refrigerant and pressurizing refrigerant which flows to a condenser (34) providing liquid refrigerant which flows to an evaporator (68) in fluid communication with the condenser and the compressor in accordance with the invention includes a first refrigerant circuit (302), coupled to the compressor, for providing pressurized liquid refrigerant to the hydrodynamic bearings from the compressor without flow through a subcooler; and a second refrigerant circuit (304), coupled to the hydrodynamic bearings and to the evaporator including at least one subcooler (42 and 44), for providing a flow of refrigerant from the hydrodynamic bearings through the at least one subcooler to the evaporator, the at least one subcooler cooling the refrigerant flowing between the hydrodynamic bearings and the evaporator.