Patent ID: 8333363
Filing Date: 2012-12-18
Classification: F16K

Abstract:
1. A regulating valve for regulating the flow of refrigeration fluids, comprising: a valve body, said valve body having an inlet and an outlet for fluid, said inlet and said outlet being mutually connected by a connecting opening; a flow control device for controlling flow through said connecting opening, said flow control device being inserted in a seat formed in said valve body; said flow control device comprising: an electric motor, with a rotor; a cylinder; a piston for controlling flow within said connecting opening, said electric motor being functionally connected to said piston for actuation thereof with axial movement within said cylinder, said cylinder having an axis that forms a sliding axis for controlled movement of said piston suitable for obstruction of said connecting opening; said cylinder being a monolithic tubular jacket that surrounds the rotor of said electric motor and said piston, so as to determine coaxiality thereof wherein said piston is slidingly arranged adjacent an inner surface of said jacket; a stem functionally connecting said piston to said rotor; and a fixed core which is connected to said inner surface of said jacket, said stem being slidingly connected to said fixed core by means of a guided coupling for sliding along said sliding axis.