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公开(公告)号：EP0861404B1
公开(公告)日：2001-09-12
申请号：EP96939710.8
申请日：1996-11-13
IPC分类号： F24F13/24 , F24F11/047
CPC分类号： F24F13/24 , F24F11/75 , Y10T137/7869
摘要： A fluid control device with a reduced sound generation. The device is a nozzle-type valve that has a converging portion, a diverging portion and a throat therebetween. A diverging portion acts as a diffuser and may be conical or may have a slight curvature. In each, the diffusion angle is less than 20° so that turbulence of fluid flowing through the valve is minimized and a boundary layer is maintained between the fluid and an inside surface of the fluid control device. A control system that uses such a fluid control device is also disclosed and such device may be used either in a supply conduit or an exhaust conduit.
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公开(公告)号：EP0861404A1
公开(公告)日：1998-09-02
申请号：EP96939710.0
申请日：1996-11-13
CPC分类号： F24F13/24 , F24F11/75 , Y10T137/7869
摘要： A fluid control device with a reduced sound generation. The device is a nozzle-type valve that has a converging portion, a diverging portion and a throat therebetween. A diverging portion acts as a diffuser and may be conical or may have a slight curvature. In each, the diffusion angle is less than 20° so that turbulence of fluid flowing through the valve is minimized and a boundary layer is maintained between the fluid and an inside surface of the fluid control device. A control system that uses such a fluid control device is also disclosed and such device may be used either in a supply conduit or an exhaust conduit.
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