Patent ID: 7814763
Filing Date: 2010-10-19
Classification: F25D

Abstract:
1. A refrigeration appliance comprising: a hot water reservoir; a cold water reservoir; a dispenser having a first electrovalve for dispensing water on demand by a user; a piping system forming a supply line comprising a first pipe fluidly coupling the hot and cold water reservoirs to the dispenser and a second electrovalve coupled with the first pipe and actuable to selectively supply water from the hot and cold water reservoirs to the dispenser; an auxiliary piping system forming a recirculation line comprising a second pipe fluidly coupling the first pipe to the hot and cold water reservoirs and a third electrovalve coupled to the second pipe to selectively recirculate non-dispensed water from the piping system to one of the hot and cold water reservoirs; and wherein an electronic control controls the operation of the first, second, and third electrovalves such that the auxiliary piping system recirculates non-dispensed water from the piping system to one of the hot and cold water reservoirs prior to the piping system supplying water to the dispenser from one of the hot and cold water reservoirs based on the demand from the dispenser.