초록 ▼

An electrically controlled proportional valve provides for precise control of fluid flow using an armature which is positioned at the center of a spider. The armature is supported and biased axially by a plurality of springs that radiate outwardly from it. The springs support the armature for elasti

An electrically controlled proportional valve provides for precise control of fluid flow using an armature which is positioned at the center of a spider. The armature is supported and biased axially by a plurality of springs that radiate outwardly from it. The springs support the armature for elastic movement in the axial direction, and hold it biased against a first port, so that the armature functions as a valve element, which normally closes that port. A magnet coil is positioned so that when energized it applies force to the armature, overcoming the bias of the springs and drawing the armature away from the first port. During armature movement the plurality of springs are deflected at their outer diameter against an angled surface on the valve case. The increased spring surface area that rests against the valve case causes a proportional relationship between the movement of the armature and the magnetic field created by the magnet coil. A spring-loaded seal in the armature compensates for dimensional instability of the elastomeric seal material and the armature assembly.

대표청구항 ▼

[ What is claimed is:] [1.]1. An electrically controlled flow valve comprising:a valve body defining a cavity having an interior surface and including first and second ports extending exterior of said valve body, and a valve seat between said first and second ports;a magnet coil within said valve bo

[ What is claimed is:] [1.]1. An electrically controlled flow valve comprising:a valve body defining a cavity having an interior surface and including first and second ports extending exterior of said valve body, and a valve seat between said first and second ports;a magnet coil within said valve body;a valve core within said coil fixed to said valve body for channeling magnetic field through said coil;a spider positioned within said cavity, said spider carrying an armature positioned in opposition to said valve seat, said spider affixed at an outer edge thereof to said valve body, said spider comprising one or more deflectable spring arms extending between said outer edge and said armature, said spider further comprising one or more spring beams extending from said spider and engaging a contact point of interior surface of said cavity, said spring arms and spring beams permitting axial movement of said armature assembly within said cavity for movement toward and away from said valve seat for blocking and unblocking said first port;wherein current through said coil generates magnetic force to move said armature relative to said first port and valve core. [2.]2. The valve of claim 1 wherein movement of said armature relative to said first port and valve core is in proportion to flow of current through said magnet coil.