Haier US Appliance Solutions, Inc.

Jaeseok Noh

Ashutosh Kulkarni

Dongsoo Shin

Jaebong Lee

Jaeyoung Jang

Younghoon Kim

Clothes dryer wireless moisture data transfer systems and energy-efficient methods of operation thereof are provided. One example method of operating a near field communication (NFC) tag includes determining whether a rotatable drum of a clothes dryer appliance is currently rotating. The NFC tag is secured to the drum. The method includes operating the NFC tag in an ultra-low power mode when it is determined that the drum is not currently rotating. The method includes periodically switching the NFC tag between a normal mode and a low power mode when it is determined that the drum is currently rotating.

Clothes dryer wireless moisture data transfer systems and energy-efficient methods of operation

Methods and systems are provided for operating a wireless communications device powered by a rechargeable battery and for providing charging of the rechargeable battery. More particularly methods are provided for recharging a battery used to provide operating power to a communications device, particularly a near field communications (NFC) device in a clothes dryer. The method and system determine whether the drum of the clothes dryer is rotating and if not rotating is in a proper alignment to enable charging of the battery. Battery charging may take place when the a battery charger, located at a stationary position in the dryer, is aligned or rotated to be aligned, with the communications device. The battery charger may correspond to a reader of the communications device, an inductive charger separate from the reader, or a slip ring arrangement.

Recharging of NFC system and algorithms to conserve power supply of NFC system designed for clothes dryer

A clothes dryer with improved moisture sensing and wireless data transfer is provided. An example drying appliance includes a plurality of sensors positioned inside a drum of the drying appliance. The plurality of sensors are wired together to provide a combined output signal indicative of one or more parameters of clothing inside the drum. The drying appliance includes a near field communication (NFC) tag mounted on an exterior surface of the drum. The NFC tag receives the combined output signal from the plurality of sensors. The drying appliance includes an NFC reader positioned on a stationary member of the drying appliance and receiving external utility power. The NFC reader receives sensor data from the NFC tag and provides the sensor data to a controller, such that the controller can control the drying appliance based on the one or more parameters of the clothing inside the drum.

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Seongnam-si, South Korea

Jaeseok Noh