Unidirectional retroaction electromagnetic valve
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0141939
(2002-05-10)
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발명자
/ 주소 |
- Chen, Shiang-Fu
- Chen, Chien-An
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출원인 / 주소 |
- Industrial Technology Research Institute
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대리인 / 주소 |
Birch, Stewart, Kolasch & Birch, LLP
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인용정보 |
피인용 횟수 :
0 인용 특허 :
3 |
초록
▼
A unidirectional-retroaction electromagnetic valve comprises a valve body, O-ring, manual opening unit, and electrically controlled blocking unit. The valve body is connected to a gas source directly and the electrically controlled blocking unit is used to stop gas in a dangerous situation. Two acti
A unidirectional-retroaction electromagnetic valve comprises a valve body, O-ring, manual opening unit, and electrically controlled blocking unit. The valve body is connected to a gas source directly and the electrically controlled blocking unit is used to stop gas in a dangerous situation. Two actions are required to open the electromagnetic valve when the dangerous situation no longer exists. First, push the manual opening unit to move the valve plate of the electromagnetic valve forward a certain distance, then the electrically controlled blocking unit moves the valve plate further according to a danger removal signal provided by a judgment device. The electromagnetic valve is not opened completely until these two movements are operated, thereby, it can prevent the blocked valve from opening intentionally during an unsafe situation.
대표청구항
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1. A unidirectional retroaction electromagnetic valve connected to a gas meter at a gas inlet, and received a blocking signal and opening signal transmitted form a control circuit for blocking and opening the connection of the gas flow, which uses a battery to supply electric power thereof, comprisi
1. A unidirectional retroaction electromagnetic valve connected to a gas meter at a gas inlet, and received a blocking signal and opening signal transmitted form a control circuit for blocking and opening the connection of the gas flow, which uses a battery to supply electric power thereof, comprising: a valve body having a first exit, second exit and a communication part communicated with said two exits, which said first exit being is connected to said gas meter and said second exit is connected to a gas hose; an O-ring installed at said communication part; a manual opening unit used to push a blocking valve plate a first distance through said communication part; and an electrically controlled blocking unit having a blocking valve plate used to cover said O-ring after receiving said blocking signal in order to block said communication part to form an airtight seal, which pushes said blocking valve plate a second distance after receiving said opening signal; when said blocking valve plate being moved said first distance and second distance at the same, said first exit and second exit is completely ventilated. 2. The valve of claim 1, wherein said electrically controlled blocking unit with said blocking valve plate further includes: a electric screw bolt used to push and pull said blocking valve plate; a permanent magnet buried inside of said electric screw bolt; a coil set covered outside of said electric screw bolt, for generating magnetic force to push forward or pull back said permanent magnet to drive said electric screw bolt; a first retroactive spring having two ends connected to said coil set and said blocking valve plate; and a coil set fixing seat combined with said valve body and covered said coil set, which is used to fix said electrically controlled blocking unit. 3. The valve of claim 2, wherein said coil set is consisted of a coil and magnetic covering. 4. The valve of claim 1, wherein said manual opening unit includes: a spinning cover, for fixing said manual opening unit on said valve body; a retroactive push rod passed through said spinning cover, for pushing said blocking valve plate to move forward said first distance; a second valve plate clipped on said retroactive push rod; a second O-ring installed on said spinning cover, which forms an second airtight seal while connecting with said second valve plate; and a second retroactive spring having two ends connected to said second valve plate and said communication ring. 5. The valve of claim 1, further comprising a third O-ring, installed at a contacting point of said spinning cover and said valve body to form an third airtight seal. 6. The valve of claim 1, further comprising a fourth O-ring installed at a contacting point of said coil set and said valve body to form a fourth airtight seal. 7. The valve of claim 1, wherein said first distance plus said second distance equals to a distance between a position where said blocking valve plate is blocking and a position where said blocking valve is opening. 8. A unidirectional valve opening method for opening an electromagnetic valve connected to a gas source of a gas meter after said gas source is blocked through a valve plate, wherein said blocking action processes blocking after a dangerous situation judgment device judges dangerous situation and transmits a dangerous situation signal, said method comprising the steps of: moving said valve plate manually to a first opening distance; and providing an electrically controlled blocking unit, for pushing said valve plate to move to a second opening distance to remove said blocking action in coordination with said manual manner when said dangerous situation signal is removed. 9. The method of claim 8, wherein said first distance plus said second distance equals to a distance between a position where said blocking valve plate is blocking and a position where said blocking valve is opening.
이 특허에 인용된 특허 (3)
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Fujino Hidesi (Osaka JPX) Kataoka Masao (Osaka JPX), Device for detecting seismic motion.
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Flaig Ulrich (Markgrningen DEX) Locher Johannes (Stuttgart DEX), Fuel metering device for fuel injection pumps.
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van der Veer ; Rutgerus Antonius, Valve interlock.
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