System for preventing condensation on refrigerator doors and frames

Abstract

An improved refrigerator energy management system removes condensation from glass refrigerator doors in an energy efficient manner by operating refrigerator frame heaters independently of refrigerator door heaters. Sensors for detecting humidity or condensation transmit data to a control unit that controls electrical current supplied to separate door and frame heater wires. Additional sensors for controlling the refrigerator lighting and monitoring the power consumption of refrigerator fans may transmit data to the control unit. A command unit may receive data from multiple control units, compile the data, and make it available over the internet to a shopkeeper monitoring the system from a remote location. The sensors, control unit, and command unit all communicate on a wireless peer-to-peer network using the ZigBee protocol.

Dependencies are inferred from the claim text.