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:
Jul. 24, 2012
Filed:
May. 22, 2009
Vincenzo Difatta, Wood Dale, IL (US);
Daniel D. Prochaska, Sr., Elgin, IL (US);
Christopher J. Knight, Lisle, IL (US);
Wali LI, Naperville, IL (US);
Nikolay V. Popov, Warrenville, IL (US);
Vincenzo DiFatta, Wood Dale, IL (US);
Daniel D. Prochaska, Sr., Elgin, IL (US);
Christopher J. Knight, Lisle, IL (US);
Wali Li, Naperville, IL (US);
Nikolay V. Popov, Warrenville, IL (US);
IMI Cornelius, Inc., Glendale Heights, IL (US);
Abstract
A method and system for detecting and correcting unintended reverse or backward operation of an electric motor driven scroll compressor of a refrigeration system is characterized by monitoring the pressure at a suction side of the compressor during operation of the refrigeration and determining whether the pressure, after a first time interval following startup of the compressor, exceeds and remains in excess of a predetermined upper pressure limit for at least a second time interval. If it does, the compressor is turned off for a third time interval and is then restarted. The foregoing is repeated and if the compressor is turned off a selected number of times because of successive occurrences of high suction side pressures during operation of the refrigeration system in a chilling cycle, an error indication is generated and the refrigeration system is shut down.