REDUCTION OF CAVITATION IN FLOW IN BEVERAGE PREPARATION DEVICE Russian patent published in 2025 - IPC F04D29/66 A47J31/00 

FIELD: beverage preparation devices.

SUBSTANCE: beverage preparation device comprising a channel defining a flow path for a liquid; a pump for moving liquid under pressure along a flow passage, configured to operate in a first mode and a second mode other than the first mode, a sensor unit configured to determine a first fluid velocity in the flow passage when the pump is operating in the first mode, and determining a second fluid velocity when the pump is operating in a second mode; and a controller operably connected to the pump and the sensor unit and configured to instruct the pump to switch from the first mode to the second mode if the first fluid velocity is below the first threshold value, and give the pump a command to switch from the second mode to the first mode, if the second liquid speed exceeds the second threshold value. In the second mode, the pump drives the fluid under higher pressure than in the first mode to at least facilitate elimination of cavitation. Also disclosed is a method of controlling a beverage preparation device.

EFFECT: reduced cavitation in the flow.

20 cl, 12 dwg