| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a flow device adapted to operate as a restrictor and provide a pressure relief capability in the event of an over-pressurization event within a fluid system containing the device. <P>SOLUTION: The flow device 50 includes an expandable orifice 64 that has an outer perimeter 62, a plurality of cantilevered tabs 58 surrounded by the outer perimeter 62, and an opening 54 surrounded and defined by the tabs 58. The tabs 58 project from the outer perimeter 62 toward the opening 54, which restricts flow of the bleed air through the expandable orifice 64 at a pressure below a predetermined pressure level, but then expands to relieve an over-pressure condition of the bleed air at a pressure above the predetermined pressure level as a result of the cantilevered tabs 58 being deflected by the over-pressure condition. The device 50 is adaptable for use in aircraft applications, including the regulation of bleed air used in anti-icing/de-icing systems. <P>COPYRIGHT: (C)2013,JPO&INPIT |
