| 摘要 |
<p>1,067,180. Pure fluid amplifiers. GENERAL ELECTRIC CO. Oct.21, 1965 [Dec.21, 1964], No. 44575/65. Heading G3H. A pure fluid device comprises an inlet passage 10 leading to a main jet orifice 13 and two outlet passages 15, 16 divided by a wall 14. A small port 17 in the side wall leads to the ambient atmosphere through a conduit 18 while a large port 19 leads to the ambient atmosphere through a conduit 20 provide with a valve. The walls downstream of the ports 17, 19 are offset by small and large amounts respectively from the sides of the nozzles 13. With both passages open to the atmosphere, the jet adheres to the wall 8 and flows out of the passage 15. The wall 14 is provided with a notch 24 which causes a vortex 29 to block flow from the passage 16 being sucked in by the jet. When the valve in conduit 20 is closed the pressure gradient across the jet causes it to switch to the outlet 16. The jet reverts to the outlet 15 when the valve is reopened.</p> |
