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US 2014/0190346 A1Published application
Economizer Device For Linear Pneumatic Actuator
OwnerEnzo Landiinventor
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OwnerEnzo Landiinventor
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An economizer device associable with a linear pneumatic actuator includes a body having openings and a Venturi vacuum generator slidably housed in a first conduit. The device operates between a first operating configuration, where a first opening is supplied with air at an operating pressure and the vacuum generator moves in the first conduit to permit primary flow of air and to reduce outlet pressure thereof from a second opening so as to supply the chamber of the actuator with air at a reduced pressure lower than the operating pressure, and a second operating configuration, where the first opening is connected to the environment at atmospheric pressure and a third opening is supplied with pressurized air with which it supplies the vacuum generator, which creates a vacuum in the second opening in such a manner as to suck air from and create a vacuum in the chamber.
An economizer device associable with a linear pneumatic actuator having a casing and a piston slidable inside the casing and defining two chambers in the latter, said device comprising a body provided with a first opening selectively connectable to a source of pressurized air or to an environment at atmospheric pressure, a second opening connectable to a chamber of the linear pneumatic actuator and a third opening selectively connectable to a source of pressurized air, said openings being connected together by a first conduit, the device comprising a Venturi vacuum generator slidably housed and movable in said first conduit, said device being arranged for operating between a first operating configuration, in which said first opening is supplied with air at an operating pressure and said Venturi vacuum generator is movable in said first conduit to permit a primary flow of air and to reduce an outlet pressure thereof from the second opening so as to supply the chamber with air at a reduced pressure lower than said operating pressure, and a second operating configuration, in which said first opening is connected to the environment at atmospheric pressure, said third opening is supplied with pressurized air with which it supplies said Venturi vacuum generator that creates a vacuum in said opening in such a manner as to suck air from and create a vacuum in the chamber of the linear pneumatic actuator.
Movement apparatus comprising a linear pneumatic actuator provided with a casing and with a piston that is slidable inside said casing and defines a first chamber and a second chamber inside the latter, said apparatus comprising an economizer device according to any preceding claim, associated with said second chamber, wherein a first opening of said device is selectively connectable to a source of pressurized air or to an environment at atmospheric pressure, a second opening of said device is connected to said second chamber, a third opening of said device is connectable to a source of pressurized air, said first chamber being selectively connectable to a source of pressurized air or to an environment at atmospheric pressure.
Method for driving a linear pneumatic actuator comprising a casing and a piston that is slidable inside said casing and defining two chambers in the latter, said driving comprising supplying with pressurized air one of said chambers and sucking air from and creating a vacuum in the remaining chamber in such a manner that to a force generated on said piston by the pressurized air in a chamber a further force is added generated by the vacuum created in the remaining chamber.
Movement apparatus comprising a linear pneumatic actuator provided with a casing and with a piston that is slidable inside said casing and defines a first chamber and a second chamber inside the latter, and an economizer device associated with said second chamber and provided with a body having a first opening selectively connectable to a source of pressurized air or to an environment at atmospheric pressure, a second opening connectable to said second chamber and connected to said first opening by a first conduit, a third opening selectively connectable to a source of pressurized air and connected to said first opening and to said opening by a Venturi vacuum generator, said device being arranged for operating between a first operating configuration, in which said first opening is supplied with pressurized air to permit a primary flow of air through said first conduit to supply said second chamber, and a second operating configuration, in which said first opening is connected to the environment at atmospheric pressure, said third opening is supplied with pressurized air with which it supplies said Venturi vacuum generator, which creates a vacuum in the second opening in such a manner as to suck air from, and create a vacuum, said second chamber.
Dependencies are inferred from the claim text.