发明公开
EP0223360A1 Vapour valve and fuel dispensing system incorporating a vapour valve
失效
Entgasungsventil und mit einem solchen Ventil versehene Brennstoffanlage。
- 专利标题： Vapour valve and fuel dispensing system incorporating a vapour valve
- 专利标题（中）： Entgasungsventil und mit einem solchen Ventil versehene Brennstoffanlage。
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申请号： EP86307188.2申请日： 1986-09-18
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公开(公告)号： EP0223360A1公开(公告)日： 1987-05-27
- 发明人: Bower, Allen M. , Roberts, Robert D.
- 申请人： EMCO WHEATON, INC.
- 申请人地址： P.O. Box 688 Chamberlain Boulevard Conneaut Ohio 44030-0688 US
- 专利权人： EMCO WHEATON, INC.
- 当前专利权人： EMCO WHEATON, INC.
- 当前专利权人地址： P.O. Box 688 Chamberlain Boulevard Conneaut Ohio 44030-0688 US
- 代理机构： Harrison, Philippa Dinah
- 优先权： US789076 19851018
- 主分类号： B67D5/06
- IPC分类号： B67D5/06
摘要：
A vapour valve (30) is useful for example in a vapour recovery nozzle of the type used in dispensing fuel to motor vehicles in which vapour from the vehicle fuel tank is returned to the fuel reservoir, the valve closing the vapour passage to the fuel reservoir when fuel is not being dispensed.
The valve (30) comprises a body having a vapour passage and a liquid passage, the passages having first and second chambers (42, 47) separated by a thin wall. A poppet (51) is positioned in the first chamber (42), is movable between a closed position (shown in Fig. 2) in which flow of vapour is blocked and an open position, and has a permanent magnet (55) which is adjacent the thin wall. A closure (56) is positioned in the second chamber (47), is moved from a resting closed position (shown in Fig. 2) restricting flow of liquid to an open position in response to flow of liquid, and has a permanent magnet (58) adjacent the thin wall. The magnets (55, 58) are arranged so that, when the closure (56) is in or moves to its closed position, the magnetic forces therebetween will cause the poppet (51) to remain in or move to its closed position.
The valve (30) comprises a body having a vapour passage and a liquid passage, the passages having first and second chambers (42, 47) separated by a thin wall. A poppet (51) is positioned in the first chamber (42), is movable between a closed position (shown in Fig. 2) in which flow of vapour is blocked and an open position, and has a permanent magnet (55) which is adjacent the thin wall. A closure (56) is positioned in the second chamber (47), is moved from a resting closed position (shown in Fig. 2) restricting flow of liquid to an open position in response to flow of liquid, and has a permanent magnet (58) adjacent the thin wall. The magnets (55, 58) are arranged so that, when the closure (56) is in or moves to its closed position, the magnetic forces therebetween will cause the poppet (51) to remain in or move to its closed position.
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