Infusion device having pressure variation

摘要

The present invention relates to a device for infusing a substance to be infused having an infusion chamber for receiving the substance to be infused and for passing a pressurized water flow through the substance to be infused, the infusion chamber having an inlet portion (4) for feeding water into the infusion chamber and an outlet portion (2) for the infused beverage, the injection channel in fluid communication via an injection end with the inlet portion (4) and adapted for connection via an intake end (39) to a pressurized water circuit, characterized in that it comprises adjustable means for varying the water pressure in the injection channel, adapted for generating a water pressure difference between the intake end (39) and the injection end (40) and controlled by control means outside the infusion chamber.

主权项

1. An infusion device comprising:
an infusion chamber for receiving a substance to be infused and passing pressurized water through the substance to be infused, the infusion chamber having a water intake portion in the infusion chamber and an infused drink outlet portion; an injection channel in fluid communication, by an injection end, with the intake portion and connectable by an inlet end to a pressurized water circuit; and an adjustable organ configured for varying a water pressure in the injection channel to generate a water pressure difference between the inlet end and the injection end, and controlled by a control element located outside the infusion chamber; wherein the adjustable organ varies a head loss and comprises:
a valve installed opposing an elastic return element configured to close the injection channel when the water pressure exerted on the valve falls below a force of the elastic return element; andan organ for adjusting the force of the elastic return element, which includes a compressible device, wherein the adjustable organ varies compression of the compressible device, wherein the adjustable organ comprises a bearing component pressing on the compressible device, a position of the bearing component being adjustable to suit a direction of compression of the compressible device, and wherein the adjustable organ comprise a screw forming a helicoidal slide for movement of the bearing component.