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. 23, 2010
Filed:
Dec. 28, 2006
Applicants:
Chris Puranen, Noblesville, IN (US);
Rajendra K. Shah, Indianapolis, IN (US);
Inventors:
Chris Puranen, Noblesville, IN (US);
Rajendra K. Shah, Indianapolis, IN (US);
Assignee:
Carrier Corporation, Farmington, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F25D 21/00 (2006.01); F25D 21/06 (2006.01); F25D 21/02 (2006.01); F25D 17/00 (2006.01); G01K 13/00 (2006.01); F25B 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method to detect and respond to a coil condition in an HVAC system. The method includes calculating an initial airflow restriction value and a current airflow restriction value, which are compared. If the current airflow restriction value is greater than a first sum including the initial airflow restriction value and a first restriction factor, then a coil condition is preliminarily determined to be freezing and cooling in the HVAC system is stopped.