Piezoelectric actuated fluid valve
AssigneeFesto AG & Co.
InventorsMartin Maichl, Hannes Wirtl, Andreas Dickhoff
Life of this patent
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Abstract
A valve device for influencing a fluid supply of fluid-operated loads, includes a valve module with a valve housing in which valve shafts are formed to accommodate valve cartridges, and further includes valve cartridges located in the valve shafts, wherein each of the valve shafts together with the valve cartridges accommodated therein bounds a pressure chamber connected to an assigned inlet port in a fluidically communicating manner, and wherein each of the valve cartridges includes two electrically selectable valve means which are designed to influence a free flow cross-section between the pressure chamber and an outlet port assigned to the respective valve means.
Claims17
A valve device for influencing a fluid supply of fluid-operated loads, the valve device including a valve module comprising:
- a valve housing in which valve shafts are formed, each valve shaft being bounded by an end plate of the valve housing and an inner surface of the valve housing extending from the end plate;
- and
- a plurality of valve cartridges located in the valve shafts, wherein each valve cartridge comprises at least one port formed at a first end of the cartridge and an annular seal provided at a second end of the cartridge opposite the first end, the at least one port being in sealing engagement with the end plate of a respective valve shaft and the annular seal being in sealing engagement with the inner surface of the respective valve shaft to form a pressure chamber connected to an assigned inlet port in a fluidically communicating manner, and wherein each of the valve cartridges comprises two electrically selectable valve means which are designed to influence a free flow cross-section between the pressure chamber and an outlet port assigned to the respective valve means, and
- wherein each valve shaft has a geometry substantially corresponding to an external geometry of each of the valve cartridges for fully receiving one valve cartridge therein such that each valve cartridge is substantially enclosed within a respective valve shaft.
A valve device for influencing a fluid supply of fluid-operated loads, comprising a valve module with a valve housing in which valve shafts are formed to accommodate valve cartridges, and further comprises valve cartridges located in the valve shafts, wherein each of the valve shafts together with the valve cartridges accommodated therein bounds a pressure chamber connected to an assigned inlet port in a fluidically communicating manner, and wherein each of the valve cartridges comprises:
- a housing;
- a first outlet formed at a proximal end of the housing;
- a first electrically selectable valve means having a fixed end fixed at a distal end of the housing opposite the proximal end and further having a deflectable end opposite the fixed end for sealing engagement with said first outlet, said first electrically selectable valve means being configured for electrical and mechanical actuation to alternatively seal and open said first outlet;
- a second outlet formed adjacent to said first outlet at said proximal end of the housing;
- and
- a second electrically selectable valve means having a fixed end fixed at the distal end of the housing opposite the proximal end and further having a deflectable end opposite the fixed end for sealing engagement with said second outlet, said second electrically selectable valve means being configured for electrical and mechanical actuation to alternatively seal and open said second outlet.
Dependencies are inferred from the claim text.