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:
Mar. 19, 2013
Filed:
Mar. 13, 2009
Mark C. Doty, Stuarts Draft, VA (US);
Earl A. Campaigne, Jr., Waynesboro, VA (US);
Thomas E. Watson, Staunton, VA (US);
Paul K. Butler, Keswick, VA (US);
Quentin E. Cline, Swoope, VA (US);
Samuel J. Showalter, Verona, VA (US);
Mark C. Doty, Stuarts Draft, VA (US);
Earl A. Campaigne, Jr., Waynesboro, VA (US);
Thomas E. Watson, Staunton, VA (US);
Paul K. Butler, Keswick, VA (US);
Quentin E. Cline, Swoope, VA (US);
Samuel J. Showalter, Verona, VA (US);
AFF-McQuay Inc., Minneapolis, MN (US);
Abstract
A high efficiency, low maintenance single stage or multi-stage centrifugal compressor assembly for large cooling installations. A cooling system provides direct, two-phase cooling of the rotor by combining gas refrigerant from the evaporator section with liquid refrigerant from the condenser section to affect a liquid/vapor refrigerant mixture. Cooling of the stator with liquid refrigerant may be provided by a similar technique. A noise suppression system is provided by injecting liquid refrigerant spray at points between the impeller and the condenser section. The liquid refrigerant may be sourced from high pressure liquid refrigerant from the condenser section.