초록 ▼

A fast-response three-way solenoid valve. A housing has three openings interconnected by a linear fluid pathway, with two chambers each disposed between two openings and having at least one valve seat per chamber. In each chamber a ball is movable toward and away from a valve seat to open and to clo

A fast-response three-way solenoid valve. A housing has three openings interconnected by a linear fluid pathway, with two chambers each disposed between two openings and having at least one valve seat per chamber. In each chamber a ball is movable toward and away from a valve seat to open and to close off the flow of fluid there. A separator pin is disposed, with clearance, within the linear pathway between the two chambers and bearing against both balls; when one ball is seated against its seat, the other ball is away from its seat. A solenoid has a plunger which moves upon energization of the solenoid, and a guide passage between the plunger and one chamber is aligned with both chambers and the balls. A plunger pin disposed in the guide passage bears against one ball on the side thereof opposite to the separator pin; the other end of the plunger pin bears against the plunger when the solenoid is energized. Movement of the plunger upon the energization of the solenoid causes the plunger to contact and move the plunger pin, in turn moving the balls and their separator pin, so that one ball is seated when the solenoid is energized, and the other ball is seated when the solenoid is de-energized.

대표청구항 ▼

A fast-response three-way solenoid valve, comprising: a housing having a first opening, a secnd opening, and a third opening interconnected by a linear fluid pathway, a first chamber disposed in said pathway between said first opening and said second opening, each end of said first chamber forming a

A fast-response three-way solenoid valve, comprising: a housing having a first opening, a secnd opening, and a third opening interconnected by a linear fluid pathway, a first chamber disposed in said pathway between said first opening and said second opening, each end of said first chamber forming a first valve seat, one an inner valve seat and one an outer valve seat, with respect to said second opening, a first ball in said first chamber movable toward and away from a said first valve seat to open and to close off the flow of fluid through the pathway at said first valve seat, a second chamber disposed in said pathway in line with said first chamber and between said second opening and said third opening, each end of said second chamber forming a second valve seat, one an inner valve seat and one an outer valve seat, with respect to said second opening, a second ball in said second chamber movable toward and away from a said second valve seat to open and to close off the flow of fluid through the pathway at that said second valve seat, a separator pin disposed, with clearance, within said linear pathway between said first and second chambers and bearing against both said first and second balls at substantially all times, said valve seats, balls, and separator pin being so related that when one said ball is seated against its said seat the other ball is not seated by said separator pin, a solenoid having a coil, a plunger which moves upon energization of the solenoid, and a guide passage between said plunger and said first chamber, aligned with both said first and second chambers and said first and second balls, a plunger pin disposed in said guide passage, one end of said plunger pin bearing against said first ball on the side thereof opposite to said separator pin, the other end of said plunger pin bearing against said plunger when said solenoid is energized, movement of said plunger upon the energization of said solenoid causing said plunger to contact and move said plunger pin, in turn moving said first ball, said separator pin, and said second ball so that one of said balls is seated against the said seat when the solenoid is energized and the other ball is seated against its said seat when the solenoid is de-energized.