发明名称 |
Fail-safe gas valve system with solid-state drive circuit |
摘要 |
<p>A solid-state fail safe gas valve system in which first and second gas valves are arranged in series in a gas passageway, the valves being actuatable by first and second solenoid operators respectively, the second operator requiring a voltage greater than the operating voltage supplied to the valve system to achieve actuation. The operators are separately energized through microprocessor controlled switches so that a capacitor connected across the second operator and its switch is pumped to a voltage above the supplied voltage by voltage induced by interrupted energization of the first operator. <IMAGE></p> |
申请公布号 |
EP0887591(A2) |
申请公布日期 |
1998.12.30 |
申请号 |
EP19980111511 |
申请日期 |
1998.06.23 |
申请人 |
HONEYWELL INC. |
发明人 |
ADAMS, JOHN T.;HILL, BRUCE;STRAND, ROLF L. |
分类号 |
F23N1/00;F23N5/24;(IPC1-7):F23N5/24 |
主分类号 |
F23N1/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|