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:
Nov. 14, 2006
Filed:
May. 13, 2005
Abtar Singh, Kennesaw, GA (US);
Jim Chabucos, Acworth, GA (US);
Paul Wickberg, Marietta, GA (US);
John G Wallace, Acworth, GA (US);
Abtar Singh, Kennesaw, GA (US);
Jim Chabucos, Acworth, GA (US);
Paul Wickberg, Marietta, GA (US);
John G Wallace, Acworth, GA (US);
Computer Process Controls, Inc., Kennesaw, GA (US);
Abstract
A method and apparatus for refrigeration system control includes a control system operable to meet cooling demand and control suction pressure for a plurality of refrigeration circuits each including a variable valve and an expansion valve. The controller controls the variable valve independently of the expansion valves to meet cooling demand by determining a change in a measured parameter and controlling at least one of the variable valves based upon the change to an approximately fully open position.