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. 06, 2007
Filed:
Dec. 29, 2003
Applicant:
Patrick M. Bailey, Snellville, GA (US);
Inventor:
Patrick M. Bailey, Snellville, GA (US);
Assignee:
Heatcraft Refrigeration Products LLC, Stone Mountain, GA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25B 41/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
An expansion valve control system, a method of controlling an expansion valve and a refrigeration unit incorporating the same. In one embodiment, the expansion valve control system includes (1) a superheat error circuit configured to derive a superheat error for a fluid associated with the expansion valve and (2) a valve position circuit, associated with the superheat error circuit, configured to reposition the expansion valve proportionally based on both a current position thereof and the superheat error.