Patent ID: 8225708

Claim:
In a beverage brewer having a brew basket assembly for holding ingredient to be brewed and a dispense head for passing water onto a layer of ingredient supported within the brew basket assembly during a dispense period of a brew cycle, the improvement being a temperature selectable dispense system, comprising: means for preselecting at least one temperature; an on-demand hot water heating chamber assembly having a hollow, hot water chamber for holding water to be heated, an inlet to the hot water chamber connectable with a source of unheated water, an outlet of the chamber connected with the dispense head, means for heating water within the chamber at a rate sufficient to maintain the temperature of water passing out of the outlet at the preselected temperature while unheated water at a temperature less than the preselected temperature enters the inlet during the dispense period, and means for sensing the temperature of the water within the chamber; a microprocessor controller responsive to the temperature selecting means and to the temperature sensing means to control the heating means as needed to maintain water being passed from the outlet at the preselected temperature during at least a part of the dispense period.