Automated beverage brewing method

Abstract

An electrical, automatic hot beverage brewer () and method of brewing in which a removable brew chamber () has a drain hole () in the bottom fitted with a normally closed, pressure responsive brew chamber drain valve assembly () maintained in a normally closed position except when pressure against the drain valve () exceeds a preselected minimum pressure limit that is greater than the fluidic pressure applied by virtue of head pressure of a full load of hot water and a piston () is moved within the brew chamber to control the opening and closing of the drain valve () When the piston () moves downwardly toward the drain hole the air pressure of a pocket of air () above the beverage () in the brew chamber () is increased to open at the end of a seeping period when it is desired to rapidly expel freshly brewed beverage out the brew drain valve at a relatively rapid rate depending upon the total of the hydraulic pressure and the added pressure from the air pressure source to avoid the need to wait for the end of a drip period. The drain valve () automatically closes after the piston () is removed from the brew chamber () to enable removal of the brew chamber () from a brewer housing () without risks of hot beverage leaking out of the brew chamber ().