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. 25, 1998
Filed:
Feb. 14, 1997
Applicant:
Inventors:
Zhichao Guo, Fayetteville, NY (US);
Robert P Dolan, Syracuse, NY (US);
Assignee:
Carrier Corporation, Syracuse, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25D / ;
U.S. Cl.
CPC ...
62156 ; 62 80 ; 62155 ;
Abstract
A defrost control for a heat pump system initiates a defrost of the outdoor coil when certain computed condition occur. The conditions include exceeding a limit as to the difference that may be permitted between the maximum indoor coil temperature occurring since the last defrosting of the outdoor coil and the current indoor coil temperature. The limit that may not be exceeded is computed as a function of the maximum indoor coil temperature occurring since the last defrosting of the outdoor coil.