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US 12,404,948 B2Granted
Solenoid valve
AssigneeHydrotek Corporation
InventorCheng-Yi Ma
Life of this patent
Estimating the term…
Abstract
A solenoid valve includes a water inlet valve seat, a guide seat, a coil barrel, and a water outlet valve seat. When in an open state, an iron core is moved to close a pressure relief hole via an iron core spring and water pressure, and the diaphragm blocks the water flow of a water inlet via water pressure and the force of a guide spring, so as to achieve a bistable effect. The coil barrel includes two pairs of magnets and a pair of magnetically conductive sheets to form two magnetic routes. The solenoid valve has a simple structure and can be produced easily.
Claims12
A solenoid valve, comprising:
- a water inlet valve seat, including a base, the base having a guide hole and at least one water inlet, one side of the base being formed with a first inner stop portion, an inner cylindrical portion and an outer cylindrical portion, the inner cylindrical portion having a through hole, a flow passage being formed between the inner cylindrical portion and the outer cylindrical portion, the flow passage communicating with the through hole of the inner cylindrical portion, the outer cylindrical portion having a lower opening;
- a guide seat, disposed in the water inlet valve seat, the guide seat having a perforation, the guide seat including a guide shaft, a guide spring and a diaphragm, the guide shaft being arranged in the guide hole, one end of the guide spring abutting against the guide seat, the diaphragm being sleeved on the guide shaft and abutting against an inner surface of the inner cylindrical portion;
- a coil barrel, disposed in the water inlet valve seat, the coil barrel including an axial tube, an upper seat and a lower seat, two ends of the axial tube being formed with a first portion and a second portion, the upper seat being arranged on an outer side of the first portion, another end of the guide spring abutting against the upper seat, the lower seat being arranged on an outer side of the second portion, a coil portion being formed between the upper seat and the lower seat, at least one coil being coiled on the coil portion;
- the axial tube having an axial hole, a pressure guide block, an iron core spring, an iron core and a pressure relief block being provided in the axial hole, the pressure guide block having a water hole, the water hole communicating with the perforation, the iron core spring acting on the pressure guide block and the iron core, the iron core having an accommodating groove, a plug being provided in the accommodating groove, a pressure relief hole being formed in the pressure relief block;
- a first magnet and a second magnet, the first magnet being disposed in one of the pressure guide block and the upper seat, the second magnet being disposed in one of the pressure relief block and the lower seat, the first magnet and the second magnet forming a magnetic route;
- a water outlet valve seat, disposed at the lower opening of the outer cylindrical portion, the water outlet valve seat having a water outlet, the water outlet communicating with the flow passage and the pressure relief hole.
3 more elements
A solenoid valve, comprising:
- a water inlet valve seat, having a water inlet and a lower opening;
- a coil barrel, disposed in the water inlet valve seat, the coil barrel including an axial tube, an upper seat and a lower seat, two ends of the axial tube being formed with a first portion and a second portion, the upper seat being arranged on an outer side of the first portion, the lower seat being arranged on an outer side of the second portion, a coil portion being formed between the upper seat and the lower seat, at least one coil being coiled on the coil portion;
- the axial tube having an axial hole, a pressure guide block, an iron core spring, an iron core and a pressure relief block being provided in the axial hole, the pressure guide block having a water hole, the water inlet communicating with the water hole, the iron core spring acting on the pressure guide block and the iron core, the iron core having an accommodating groove, a plug being provided in the accommodating groove, a pressure relief hole being formed in the pressure relief block;
- a first magnet and a second magnet, the first magnet being disposed in one of the pressure guide block and the upper seat, the second magnet being disposed in one of the pressure relief block and the lower seat, the first magnet and the second magnet forming a magnetic route;
- a water outlet valve seat, disposed at the lower opening, the water outlet valve seat having a water outlet, the water outlet communicating with the pressure relief hole.
2 more elements
Dependencies are inferred from the claim text.