Valve Device
AssigneeDe' Longhi Appliances S.R.L. Con Unico Socio
InventorsPaolo Evangelisti, Nicola Piovan, Davide Bonotto
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Abstract
A valve device includes an entry aperture and an exit aperture for a fluid, a chamber which puts the entry and exit apertures in selective communication, a housing compartment, a piston disposed in the compartment, which is mobile between a closing position in which it prevents the transit of the fluid and an opening position in which it allows the passage of the fluid, and elastic return means associated with the piston A machine for preparing beverages includes at least one said valve device.
Claims14
A valve device comprising:
- a valve body delimiting a housing compartment;
- an entry aperture and an exit aperture for a fluid;
- a chamber which puts said entry and exit apertures in selective communication;
- a piston disposed in said compartment, which is mobile between a closing position in which it prevents the transit of the fluid and an opening position in which it allows the passage of the fluid through said exit aperture;
- elastic return means associated with said piston and disposed outside said chamber,
- wherein in the closing position of said valve device and in the position of maximum release of said elastic means, between a head surface;
- of said piston and an entry wall of said valve body there remains defined a free space, directly facing said entry aperture and substantially as wide as said housing compartment.
The machine as in claim 14, comprising a first valve device located upstream of said brewing chamber, configured to define a minimum limit for the pressure of the water being fed, and a second valve device located downstream of said brewing chamber and configured to act as a cream whipper valve, and promote the generation of air bubbles in the beverage.
Dependencies are inferred from the claim text.