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:
Oct. 24, 1995
Filed:
Jan. 11, 1994
Frank E Wills, York, PA (US);
Dean K Norbeck, York, PA (US);
York International Corporation, York, PA (US);
Abstract
A refrigeration system includes a temperature sensor in a freezing compartment, a temperature sensor in a cooling compartment, an adjustable damper controlling the flow of cooled air from the freezing compartment to the cooling compartment and variable speed drives for fan motors and a compressor motor. The desired set point temperatures for the compartment are compared with the actual sensed temperatures through a controller that controls the speed of the compressor and fan motors, to achieve the desired temperature in a fast and efficient manner. When excessive ice is detected on freezing compartment coils, the controller reverses the heat transfer cycle of the refrigerant to defrost the freezing compartment coils.