OPTICAL FROST DETECTOR WITH GAS BLOW OFF

摘要

A frost detector, system, and method for controlling frost formation on the evaporator of a device operating in a refrigeration cycle by initiating defrost cycles when frost is optically detected. The system includes apparatus for delivering gas at a volume and velocity sufficient to remove residual water and debris from the frost detector of the system that might degrade performance if not removed. When frost is detected, a signal is sent to a controller which activates a defrost cycle.