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US 10,208,870 B1Granted
Solenoid valve
AssigneeHydrotek Corporation
InventorsShu Huang, Cheng-Yi Ma
Life of this patent
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Abstract
A solenoid valve includes a coil housing, a coil barrel and an actuator. The coil barrel is mounted in the coil housing, is coiled with multiple coils, and has a valve gate formed on a bottom of the coil barrel. The actuator is moveably mounted in the coil barrel and has a piston, a magnetic shaft, a spring mounted between the piston and the magnetic shaft, and a sealing pad abutting the piston. The actuator is driven by the coils to move the piston. The piston has two notches being able to break a vacuum state, and can be pushed upward easily and efficiently to save electricity.
Claims4
A solenoid valve comprising:
- a coil housing being hollow and cylindrical and having a top surface and a bottom opening, wherein the coil housing has
- an adjusting hole formed in the top surface of the coil housing and located at a center of the top surface of the coil housing;
- and
- a wire hole formed in the top surface of the coil housing and located adjacent to a periphery of the top surface of the coil housing;
- and
- a magnet having a tube hole;
- a coil barrel mounted in the coil housing and including
- a shaft tube having a top end and a bottom end, and an adjusting segment formed on the top end of the shaft tube and mounted in the adjusting hole of the coil housing;
- the tube hole of the magnet disposed around the adjusting segment of the shaft tube;
- an upper wall and a lower wall respectively and radially formed around the shaft tube;
- a valve body formed on the bottom end of the shaft tube and having at least one inlet groove and at least one outlet groove;
- a coiling area defined between the upper wall and the lower wall;
- and
- a valve gate formed in the valve body and communicating with the at least one inlet groove and the at least one outlet groove;
- an actuator mounted in the shaft tube and including
- a piston movably mounted in the shaft tube and having
- a side wall downwardly formed around a bottom end of the piston and covering the valve gate,
- a pad recess formed in the side wall and the valve gate covered in the pad recess;
- and,
- two notches formed in the side wall diametrically opposite each other;
- a magnetic shaft adjustably mounted in the adjusting segment of the shaft tube, wherein the upper wall is located adjacent to the adjusting segment of the shaft tube and has a wire channel and a wire recess, and the wire channel is annularly formed around a periphery of the upper wall;
- and
- the lower wall is located adjacent to the valve body;
- a spring mounted between the piston and the magnetic shaft;
- a sealing pad mounted in the pad recess of the piston;
- and
- a bottom cover mounted on the bottom opening of the coil housing and having
- a through hole formed through a center of the bottom cover and disposed around the shaft tube;
- and
- a flange downwardly formed on a bottom surface of the bottom cover and located around the through hole,
- wherein the bottom end of the shaft tube is mounted through the through hole of the bottom cover.
28 more elements
Dependencies are inferred from the claim text.