Electromagnetic valve
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0359093
(2003-02-06)
|
우선권정보 |
JP-0347738 (2002-11-29) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
10 인용 특허 :
7 |
초록
▼
An electromagnetic valve for opening and closing a fluid flow passage by operating a plunger under a magnetic force of a solenoid. The valve comprises a valve head provided at one of opposite ends of the plunger, and a fixed valve seat including an orifice providing a fluid flow passage. The valve h
An electromagnetic valve for opening and closing a fluid flow passage by operating a plunger under a magnetic force of a solenoid. The valve comprises a valve head provided at one of opposite ends of the plunger, and a fixed valve seat including an orifice providing a fluid flow passage. The valve head is adapted to abut against the valve seat to close the orifice. A spring resiliently presses the valve head in a direction for abutment of the valve head against the valve seat to close the orifice. Either one of the valve head and the valve seat is formed from a metallic material and the other is formed from a non-metallic material having a greater hardness than the metallic material. It is preferred that the metallic material be a highly corrosion-resistant metal alloy containing Ni in a high amount ratio, and the non-metallic material be of a ceramic type.
대표청구항
▼
1. An electromagnetic valve for opening and closing a fluid flow passage by operating a plunger under a magnetic force of a solenoid, said electromagnetic valve comprising:a valve head provided at one of opposite ends of the plunger; a fixed valve seat including an orifice providing a fluid flow pas
1. An electromagnetic valve for opening and closing a fluid flow passage by operating a plunger under a magnetic force of a solenoid, said electromagnetic valve comprising:a valve head provided at one of opposite ends of the plunger; a fixed valve seat including an orifice providing a fluid flow passage, the valve head being adapted to abut against the valve seat to close the orifice, to thereby close the fluid flow passage; and a spring which resiliently presses the valve head in a direction for abutment of the valve head against the valve seat to close the orifice, wherein either one of the valve head and the valve seat is formed from a metallic material and the other of the valve head and the valve seat is formed from a non-metallic material having a greater hardness than said metallic material, wherein the valve head comprises a ball made of said non-metallic material, and is provided at the end of the plunger through a metal diaphragm. 2. The electromagnetic valve according to claim 1, wherein said metallic material is a highly corrosion-resistant metal alloy containing Ni in a high amount ratio, and said non-metallic material is of a ceramic type.3. The electromagnetic valve according to claim 2, wherein said metallic material is one member selected from the group consisting of SUS 316L and an Ni?Ti type superelastic metal alloy, and said non-metallic material is one member selected from the group consisting of Al2O3, Si2O3, Si3N4, Ti2O3 and diamond-like carbon.4. The electromagnetic valve according to claim 2, wherein said metallic material contains 18% or more of Ni.5. The electromagnetic valve according to claim 1, wherein the valve seat is arranged in a disk-like form and comprises a thin plate including an orifice, the orifice being located at a central portion of the valve seat, and the valve seat includes a fluid flow passage formed separately from said orifice and is fixed to a yoke for said solenoid.6. An electromagnetic valve for opening and closing a fluid flow passage by operating a plunger under a magnetic force of a solenoid, said electromagnetic valve comprising:a valve head provided at one of opposite ends of the plunger; a fixed valve seat including an orifice providing a fluid flow passage, the valve head being adapted to abut against the valve seat to close the orifice, to thereby close the fluid flow passage; and a spring which resiliently presses the valve head in a direction for abutment of the valve head against the valve seat to close the orifice, wherein either one of the valve head and the valve seat is formed from a metallic material and the other of the valve head and the valve seat is formed from a non-metallic material having a greater hardness than said metallic material, wherein the valve head comprises a metal diaphragm having a surface coated with said non-metallic material. 7. An electromagnetic valve for opening and closing a fluid flow passage by operating a plunger under a magnetic force of a solenoid, said electromagnetic valve comprising:a valve head provided at one of opposite ends of the plunger; a fixed valve seat including an orifice providing a fluid flow passage, the valve head being adapted to abut against the valve seat to close the orifice, to thereby close the fluid flow passage; and a spring which resiliently presses the valve head in a direction for abutment of the valve head against the valve seat to close the orifice, wherein either one of the valve head and the valve seat is formed from a metallic material and the other of the valve head and the valve seat is formed from a non-metallic material having a greater hardness than said metallic material, wherein a cut portion is provided in a magnetic flux passage of said electromagnetic valve, said cut portion extending in parallel to the magnetic flux passage. 8. An electromagnetic valve for opening and closing a fluid flow passage by operating a plunger under a magnetic force of a solenoid, said electromagnetic valve comprising:a valve head provided at one of opposite ends of the plunger; a fixed valve seat including an orifice providing a fluid flow passage, the valve head being adapted to abut against the valve seat to close the orifice, to thereby close the fluid flow passage; and a spring which resiliently presses the valve head in a direction for abutment of the valve head against the valve seat to close the orifice, wherein either one of the valve head and the valve seat is formed from a metallic material and the other of the valve head and the valve seat is formed from a non-metallic material having a greater hardness than said metallic material, wherein said spring is a coil spring provided between the plunger and a yoke for the solenoid, said coil spring having an intermediate portion formed by a coil of a metal strip and opposite end portions formed by cylindrical bodies, one of the opposite end portions being press-fitted over the plunger and the other end portion being press-fitted over the yoke.
이 특허에 인용된 특허 (7)
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Benson Richard A. (Bedford MA) King Steven M. (North Grafton MA), Fluid control and shut off valve.
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Kolenc Terrence J. (Mentor OH), High pressure diaphragm valve.
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Wu Tong, High pressure fluid passage sealing for internal combustion engine fuel injectors and method of making same.
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Ewing James H. (Lexington MA), Positive displacement pump system.
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Claude Ray Jones, Silicon carbide valve disc for nuclear reactors.
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Ollivier Louis A., Valve having metal-to metal dynamic seating for controlling the flow of gas for making semiconductors.
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Ha Don Dongcho, Valve mechanism.
이 특허를 인용한 특허 (10)
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Brondum, Klaus; Welty, Richard P.; Jonte, Patrick B.; Richmond, Douglas S.; Thomas, Kurt, Faucet.
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Brondum, Klaus; Welty, Richard P.; Jonte, Patrick B.; Richmond, Douglas S., Faucet component with coating.
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Brondum, Klaus; Welty, Richard P.; Jonte, Patrick B.; Richmond, Douglas S., Faucet component with coating.
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Brondum, Klaus; Welty, Richard P.; Jonte, Patrick B.; Richmond, Douglas S., Faucet component with coating.
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Brondum, Klaus, Faucet with wear-resistant valve component.
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Delamare, Jerome; Cugat, Orphee; Dieppedale, Christel; Meunier-Carus, Jerome, Levitation magnetic actuator.
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Sin, Pheng, Multi-vane throttle valve.
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Lowery, Patrick A., Removable valve seat member for diaphragm valve.
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Brondum, Klaus; Welty, Richard P.; Richmond, Douglas S.; Jonte, Patrick B.; Thomas, Kurt, Valve component for faucet.
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Brondum, Klaus; Welty, Richard P.; Richmond, Douglas S.; Jonte, Patrick B.; Thomas, Kurt, Valve component for faucet.
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