Patent ID: 8443527

Claim:
A laundry dryer comprising: a rotatable drum defining a treating chamber for receiving a laundry load for drying and having an air inlet and an air outlet; an air flow system having an inflow portion fluidly coupled with the treating chamber at the air inlet to provide inflow air to the treating chamber and an outflow portion fluidly coupled with the treating chamber through the air outlet to exhaust outflow air from the treating chamber; a heating system thermally coupled with the inflow portion and operable to heat the inflow air; an inflow temperature sensor operable to provide an inflow temperature output indicative of the temperature of the inflow air; an outflow temperature sensor operable to provide an outflow temperature output indicative of the temperature of the outflow air; a load sensor operable to provide a load size output indicative of the size of the laundry load in the treating chamber; and a controller coupled with the inflow temperature sensor, the outflow temperature sensor, and the load sensor, the controller having a laundry temperature estimation algorithm and operable to receive the inflow temperature output, the outflow temperature output, and the load size output, respectively, wherein the controller applies the inflow temperature output, outflow temperature output, and the load size output as input parameters to the laundry temperature estimation algorithm and provides a laundry temperature output indicative of the temperature of the laundry load.