-
公开(公告)号：US5012835A
公开(公告)日：1991-05-07
申请号：US507879
申请日：1990-04-12
CPC分类号： F16K31/006 , F15C3/14 , F16K31/02 , H01L41/094 , Y10T137/2278
摘要： A nozzle flapper mechanism includes an electrostrictive device, a plate member coupled to the electrostrictive device, a nozzle having an orifice facing the electrostrictive device or the plate member, and a controller for applying a voltage to the electrostrictive device to keep a nozzle back pressure constant or vary the nozzle back pressure. The electrostrictive device comprises a shim, piezoelectric ceramics members disposed on the shim, and thin-film electrodes disposed on the piezoelectric ceramics members, the electrodes having an area smaller than that of the piezoelectric ceramics members, the piezoelectric ceramics members having one end directly fixed in position on a stationary member.
-
公开(公告)号：US5076314A
公开(公告)日：1991-12-31
申请号：US645632
申请日：1991-01-25
CPC分类号： F16K31/006 , F15C3/14 , F16K31/02 , H01L41/094 , Y10T137/2278
摘要： A nozzle flapper mechanism includes an electrostrictive device, a plate member coupled to the electrostrictive device, a nozzle having an orifice facing the electrostrictive device or the plate member, and a controller for applying a voltage to the electrostrictive device to keep a nozzle back pressure constant or vary the nozzle back pressure. The electrostrictive device comprises a shim, piezoelectric ceramics members disposed on the shim, and thin-film electrodes disposed on the piezoelectric ceramics members, the electrodes having an area smaller than that of the piezoelectric ceramics members, the piezoelectric ceramics members having one end directly fixed in position on a stationary member.
-
公开(公告)号：US4934401A
公开(公告)日：1990-06-19
申请号：US301708
申请日：1989-01-26
CPC分类号： F16K31/006 , F15C3/14 , F16K31/02 , H01L41/094 , Y10T137/2278
摘要： A nozzle flapper mechanism includes an electrostrictive device, a plate member coupled to the electrostrictive device, a nozzle having an orifice facing the electrostrictive device or the plate member, and a controller for applying a voltage to the electrostrictive device to keep a nozzle back pressure constant or vary the nozzle back pressure. The electrostrictive device comprises a shim, piezoelectric ceramics members disposed on the shim, and thin-film electrodes disposed on the piezoelectric ceramics members, the electrodes having an area smaller than that of the piezoelectric ceramics members, the piezoelectric ceramics members having one end directly fixed in position on a stationary member.
摘要翻译： 喷嘴挡板机构包括电致伸缩装置，耦合到电致伸缩装置的板构件，具有面向电致伸缩装置或板构件的孔的喷嘴，以及用于向电致伸缩装置施加电压以保持喷嘴背压恒定的控制器 或改变喷嘴背压。 电致伸缩装置包括垫片，设置在垫片上的压电陶瓷构件和设置在压电陶瓷构件上的薄膜电极，电极的面积小于压电陶瓷构件的面积，压电陶瓷构件的一端直接固定 在固定构件上的位置。
-
公开(公告)号：US4898200A
公开(公告)日：1990-02-06
申请号：US341269
申请日：1989-04-21
IPC分类号： F15B5/00
CPC分类号： F15B5/003 , Y10T137/2409 , Y10T137/261 , Y10T137/7761 , Y10T137/86919
摘要： An electropneumatic transducer for converting an electric signal to a pneumatic pressure has a nozzle flapper mechanism and a pilot valve engaging a diaphragm assembly. The nozzle flapper mechanism has a nozzle flapper composed of an electrostrictive element. The diaphragm assembly comprises two diaphragms having different effective areas. A nozzle back pressure is applied to one of the diaphragms, and an atmospheric pressure is applied to the other diaphragm. A supplied pressure or output pressure is applied between the two diaphragms. The nozzle back pressure is varied dependent on the voltage applied to the electrostrictive element for moving the diaphragms to enable the pilot valve to control a valve disposed in a passage connecting supply and output ports.
摘要翻译： 用于将电信号转换为气压的电动气动传感器具有喷嘴挡板机构和与隔膜组件接合的先导阀。 喷嘴挡板机构具有由电致伸缩元件构成的喷嘴挡板。 膜片组件包括具有不同有效面积的两个膜片。 喷嘴背压被施加到其中一个隔膜，并且大气压被施加到另一隔膜。 所提供的压力或输出压力被施加在两个隔膜之间。 喷嘴背压根据施加到用于移动隔膜的电致伸缩元件的电压而变化，以使得先导阀能够控制设置在连接供应和输出端口的通道中的阀。
-
公开(公告)号：US4722360A
公开(公告)日：1988-02-02
申请号：US819705
申请日：1986-01-17
IPC分类号： F15B5/00 , G05D16/06 , G05D16/20 , F16K31/126
CPC分类号： G05D16/2093 , G05D16/0672 , Y10T137/2409 , Y10T137/7761 , Y10T137/7764
摘要： A fluid regulator including, in a housing, a nozzle flapper mechanism, a diaphragm displaceable by the nozzle back pressure of the nozzle flapper mechanism, a valve body for controlling fluid communication through a fluid passage in accordance with displacement of the diaphragm, and a sensor for picking up a change in output fluid pressure from the fluid passage as a change in an electric signal. The nozzle flapper mechanism includes an electrostrictive element positioned closely to the nozzle of the nozzle flapper mechanism. Displacement of the electrostrictive element with respect to the nozzle is controlled by a differential signal resulting from comparison between an electric input signal and an electric signal from the sensor. The nozzle back pressure is varied dependent on the displacement of the electrostrictive element for thereby displacing a valve body in the fluid passage until the valve body is brought into equilibrium.
摘要翻译： 一种流体调节器，包括在壳体中的喷嘴挡板机构，可通过喷嘴挡板机构的喷嘴背压移动的隔膜，用于根据隔膜的位移控制通过流体通道的流体连通的阀体，以及传感器 用于从液体通道拾取输出流体压力的变化作为电信号的变化。 喷嘴挡板机构包括紧靠喷嘴挡板机构的喷嘴定位的电致伸缩元件。 电致伸缩元件相对于喷嘴的位移由通过电输入信号和来自传感器的电信号之间的比较而产生的差分信号来控制。 喷嘴背压根据电致伸缩元件的位移而变化，从而使流体通道中的阀体移位，直到阀体达到平衡。
-
-
-
-
搜索结果
5 条记录 (耗时 0.019 秒)
