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.

Abstract: The present invention is a device for reducing energy consumption by heaters on refrigerator doors and frames. A control unit is set so that the heater is on prior to the formation of condensation. The preferred embodiment provides for preset heater stop and start times entered by a system user. The heater may also be turned on when condensation is sensed by a sensor, and the sensor reading may be used to override the preset times. A programmer provides individual identification of each connected control unit and is used to read, measure and adjust one or more control units' settings. A communications host is used to enable remote monitoring and control. In addition, a quick-disconnect power connector provides for easily setting the system to a heater-on state.

Abstract: The present invention is an improved anti-sweat controller for removing condensation from glass doors that are used on refrigerators in retail stores. The anti-sweat controller comprises three components, a sensor to measure condensation and temperature, a control unit to adjust door heaters, and a command unit. The sensors, control unit, and command unit all communicate on a wireless peer-to-peer network using the ZigBee protocol. Moreover, the command unit is attached to the Internet and enables a user to adjust the various settings on the anti-sweat controller from a remote location if desired.

Abstract: The present invention is a device for reducing energy consumption by heaters on refrigerator doors and frames. A control unit is set so that the heater is on prior to the formation of condensation. The preferred embodiment provides for preset heater stop and start times entered by a system user. The heater may also be turned on when condensation is sensed by a sensor, and the sensor reading may be used to override the preset times. A programmer provides individual identification of each connected control unit and is used to read, measure and adjust one or more control units' settings. A communications host is used to enable remote monitoring and control. In addition, a quick-disconnect power connector provides for easily setting the system to a heater-on state.