US Patent 10105003 Beverage dispenser

A beverage dispenser, in which a filter is arranged between the lower end of a brewing chamber and an upper end of a fluid receptacle. A beverage brewed by supplying a raw material and water to the chamber is forced to drip into the fluid receptacle through the filter F, and delivered to a cup along a beverage path. The beverage dispenser includes: a pressure difference generator for generating a pressure difference between the chamber and the fluid receptacle to force the beverage to drip into the fluid receptacle, and to deliver the beverage to the cup; a pressure sensor for measuring the pressures in the fluid receptacle or in the chamber; and a controller that sequentially determines an interval average for pressure measured by the pressure sensor, and halts, based on results of the interval averages, a drip-brewing and delivering operation for the beverage.