Patent ID: 9271605
Filing Date: 2016-03-01
CPC Classification: A47J

Claim Text:
1. A device for preparing a hot beverage, comprising: a liquid supply; an extraction or infusion head that contains a beverage forming ingredient; an arrangement for circulating liquid from the liquid supply to the beverage forming ingredient in the extraction or infusion head for contact therewith to form a hot beverage that is dispensed from a beverage supply exit; a combustion heater for supplying combustion heat to the liquid that is circulated from the liquid supply to the extraction or infusion head and the supply exit; an electric heater for supplying electric heat to the liquid that is circulated from the liquid supply to the extraction or infusion head and the supply exit; and a heat regulator configured to regulate the heat supplied to the liquid from the combustion heater and the electric heater, the heat regulator comprising a temperature sensor which is arranged to measure directly or indirectly the temperature of the heated liquid for comparing the measured temperature with a target temperature, the electric heater and the combustion heater are arranged to adjust at least one of the supply of the electric heat or the combustion heat based on the difference between the measured temperature and the target temperature, the heat regulator further comprising a control unit that is configured to operate (i) in a first mode in which the combustion heater supplies combustion heat to the circulating liquid while the electric heater does not supply the electric heat to the circulated liquid, (ii) in a second mode in which the electric heater supplies electric heat to the circulating liquid while the combustion heater does not supply the combustion heat to the circulating liquid, and (iii) in a third mode in which the combustion heater supplies the combustion heat and the electric heater supplies the electric heat simultaneously to the circulating liquid.