초록 ▼

There is disclosed a reset mechanism particularly adapted for use within a magnet valve in which the reset mechanism comprises a passageway within the valve housing connecting the inlet and outlet passages in which a reset valve normally interrupts a communication between the inlet and outlet side o

There is disclosed a reset mechanism particularly adapted for use within a magnet valve in which the reset mechanism comprises a passageway within the valve housing connecting the inlet and outlet passages in which a reset valve normally interrupts a communication between the inlet and outlet side of the said reset passage to permit normal operation of the magnetic valve and to permit normal fluid flow through the inlet and outlet passages thereof prior to movement of said magnetic valve from its normally open to its normally closed position. After said magnetic valve has closed, this being responsive to a pre-determined excess of fluid pressure across the primary communication area between the inlet and outlet passages of the magnetic valve, the reset valve can be actuated to open the reset passage thereby creating an equalization of pressure between the outlet and inlet ports, thus eliminating the existence of any relative vacuum across the area of primary communication between the inlet and outlet passages and, thereby, eliminating any opposition to the return of the magnetic valve to its normally open position.

대표청구항 ▼

A fluid control valve with re-set mechanism, the valve including a housing, a fluid inlet passage therein, and a fluid outlet passage in communication with said fluid inlet passage, said fluid control device comprising: (a) a re-set channel formed in said housing, connecting said fluid inlet and out

A fluid control valve with re-set mechanism, the valve including a housing, a fluid inlet passage therein, and a fluid outlet passage in communication with said fluid inlet passage, said fluid control device comprising: (a) a re-set channel formed in said housing, connecting said fluid inlet and outlet passages; (b) an externally movable re-set valve normally blocking said re-set channel; (c) a reciprocating valve capable of permitting, limiting, or precluding communication between said inlet and outlet passages, said valve comprising a ferromagnetic armature defining a magnetic axis along its axis of reciprocation, said magnetic axis generally corresponding to the longitudinal center of a fluid-tight chamber within said housing within which said valve may reciprocate, said valve having a variable flow-responsive integral first radial end face disposed within a region of communication between said inlet and outlet passages, said outlet passage having an entrance geometry complemental to the geometry of said first end face; (d) a fixed pole magnet disposed within said housing and magnetically proximate to said area of communication between the inlet and outlet passages, said fixed pole magnet having a magnetic axis disposed in magnetic communication with the magnetic axis of said valve, to normally attract and hold said valve when said valve is open, and to normally repel said reciprocating valve toward its open direction when said valve is closed; and (e) magnetic bias and calibration means disposed within said housing and disposed co-linearly and normally in contact with said reciprocating valve, near a radial end thereof opposite to said flow-responsive radial end of said valve, said bias and calibration means provided with an axis of magnetic polarity substantially co-linear with said magnetic axis of said reciprocating valve, in which said reciprocating valve is normally magnetically and thereby mechanically balanced between (i) the force of magnetic attraction, at said first radial end face, between said end of said reciprocating valve and that end of said fixed pole magnet proximate thereto, and (ii) the force of the magnetic contact of said bias and calibration means against said opposite radial end face of said reciprocating valve, said bias and calibration means further comprising external means for selectably advancing said flow-responsive first radial end face partially into said region of inlet-outlet communication to thereby correspondingly calibrate the level of fluid flow necessary to overcome the magnetic co-action between said bias and calibration means, and said reciprocating valve, to thereby precisely regulate the closure thereof, whereby the reliability of the function of the open and re-set condition of the reciprocating valve is enhanced by the position and function of said fixed pole magnet and, further whereby, the resetting of said valve to its normally open position after an excess of fluid pressure has ceased to exist, may be insured by the opening of said externally moveable re-set valve to thereby permit communication between the inlet and outlet passages of said re-set channel, thereby creating an equalization of pressure between said inlet and outlet passages, thus reducing to zero the pressure differential across the region of communication between said inlet and outlet passages, by eliminating any residual relative vacuum pressure upon the port face of the reciprocating valve that might otherwise prevent the prompt return of the valve to its normally open position.