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:
Dec. 02, 2014
Filed:
Sep. 14, 2011
William L. Kopko, Jacobus, PA (US);
Paul Nemit, Jr., Waynesboro, PA (US);
Angela Marie Comstock, Roanoke, VA (US);
William L. Kopko, Jacobus, PA (US);
Paul Nemit, Jr., Waynesboro, PA (US);
Angela Marie Comstock, Roanoke, VA (US);
Johnson Controls Technology Company, Holland, MI (US);
Abstract
A system and method for controlling the volume ratio of a compressor is provided. The system can use a port () or ports in a rotor cylinder to bypass vapor from the compression chamber to the discharge passage of the compressor. A control valve () can be used to open or close the port or ports to obtain different volume ratios in the compressor. The control valve () can be moved or adjusted by one or more valves that control a flow of fluid to the valve. A control algorithm can be used to control the one or more valves to move the control valve to obtain different volume ratios from the compressor. The control algorithm can control the one or more valves in response to operating parameters associated with the compressor.