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:
Aug. 31, 2010
Filed:
Mar. 08, 2007
Yi Chen, St. Charles, MO (US);
Jie Chen, St. Charles, MO (US);
Allan J. Reifel, Florrisant, MO (US);
David L. Koesterer, Belleville, MO (US);
Yi Chen, St. Charles, MO (US);
Jie Chen, St. Charles, MO (US);
Allan J. Reifel, Florrisant, MO (US);
David L. Koesterer, Belleville, MO (US);
Nordyne Inc., O'Fallon, MO (US);
Abstract
A control procedure operates an expansion valve of an air conditioning system. The control procedure utilizes a first control procedure to bring a calculated superheat value within a range of a target superheat value, and a second control procedure to cause the calculated superheat value to match the target superheat value. Both the first and second control procedures preferably use Proportional, Integral, Derivative control algorithms.