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. 17, 2015
Filed:
Mar. 21, 2014
Applicant:
Evapco, Inc., Taneytown, MD (US);
Inventor:
Greg Derosier, Taneytown, MD (US);
Assignee:
EVAPCO, INC., Taneytown, MD (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F25D 21/02 (2006.01); F25D 21/00 (2006.01);
U.S. Cl.
CPC ...
F25D 21/02 (2013.01); F25B 2700/11 (2013.01); F25D 21/006 (2013.01);
Abstract
A system for controlling the defrost cycle of an evaporator comprising a sensor in the coil of an evaporator or downstream of the coil, the sensor configured to determine changes in the liquid mass ratio of the refrigerant in the evaporator. The difference in liquid mass ratio relating to frost buildup on the outside of said evaporator. When the difference in liquid mass ratio reaches a predetermined amount, corresponding to an unsatisfactory frost buildup, a defrost cycle is initiated. When the liquid mass ratio returns to a value that corresponds to a defrosted evaporator, the defrost cycle is discontinued.