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. 28, 2007
Filed:
May. 06, 2004
Pengju Kang, Hartford, CT (US);
Mohsen Farzad, Glastonbury, CT (US);
Slaven Stricevic, Willimantic, CT (US);
Payman Sadegh, Manchester, CT (US);
Alan M. Finn, Hebron, CT (US);
Pengju Kang, Hartford, CT (US);
Mohsen Farzad, Glastonbury, CT (US);
Slaven Stricevic, Willimantic, CT (US);
Payman Sadegh, Manchester, CT (US);
Alan M. Finn, Hebron, CT (US);
Carrier Corporation, Syracuse, NY (US);
Abstract
A method and system for detecting and predicting air filter condition for an air handling system operates by determining a system resistance to air flow. The system resistance is utilized to determine a detection statistic indicative of current filter condition and to predict remaining life of the air filter. The system resistance is determined using models that approximate the expected operation of the air handling system. The approximation is then compared to actual values to obtain a difference. Once the difference between the approximated value exceeds a threshold value, an alarm is initiated that is indicative of system resistance. The remaining air filter life is then determined by using historically gathered data, or by using a known degradation rate of the air filter. Once the remaining life of the air filter is estimated, replacement can be scheduled that would coincide with other maintenance.