-
公开(公告)号：US5788741A
公开(公告)日：1998-08-04
申请号：US787879
申请日：1997-01-23
摘要： A virtual impactor that can remove essentially all of the particles from an airstream is disclosed. Disclosed are a method of separating particles from the airstream using this virtual impactor, a method of concentrating the particulate matter in an airstream, and the concentrated airstream.
摘要翻译： 公开了一种可以从气流中基本上除去所有颗粒的虚拟冲击器。 公开了使用该虚拟冲击器从气流中分离颗粒的方法，将颗粒物质浓缩在气流中的方法和浓缩气流。
-
公开(公告)号：US5547746A
公开(公告)日：1996-08-20
申请号：US156151
申请日：1993-11-22
CPC分类号： D01F6/46 , B32B5/02 , D01F6/06 , D04H1/4291 , D04H1/4374 , D04H1/4382 , D04H1/559 , D04H1/56 , D04H3/007 , D04H3/14 , D04H3/16 , Y10T428/2915 , Y10T442/66
摘要： A nonwoven fiber and fabric and process for production are provided which have comparable strength characteristics to conventional fibers and fabrics and are of a finer diameter. This is accomplished through a process of producing a nonwoven fabric made from at least one polymer which has a melt temperature between about 410.degree. and 470.degree. F. (210.degree. and 243.degree. C.), xylene solubles between about 3.5 and 7.0%, a melt flow rate between about 30 and 45, and an isotacticity of at least about 94%, extruding the polymer through fine openings, drawing the polymer to produce fibers of a denier of 1.4 or less, and then depositing the fiberized polymer on a collecting surface to form a web of disbursed fibers.The nonwoven fabric of this invention may be used in products such as, for example, diapers, feminine hygiene products, adult incontinence products, wound dressings, bandages, sterilization wraps, surgical drapes and wipers.
摘要翻译： 提供了一种非织造纤维和织物以及用于生产的方法，其具有与常规纤维和织物相当的强度特性并且具有更细的直径。 这通过生产由至少一种聚合物制成的无纺布的方法来实现，所述聚合物的熔融温度在约410°至470°F（210°和243℃）之间，二甲苯可溶物在约3.5至7.0％之间， 约30至45之间的熔体流动速率和至少约94％的全同立构规整度，通过精细开口挤出聚合物，拉伸聚合物以生产旦尼尔为1.4或更小的纤维，然后将纤维化聚合物沉积在收集 表面以形成已发布的纤维网。 本发明的无纺布可以用于例如尿布，女性卫生用品，成人失禁产品，伤口敷料，绷带，灭菌包装，外科用具和擦拭器等产品中。
-
3.发明授权Virtual impactor for removing particles from an airstream and method for using same 失效用于从气流中去除颗粒的虚拟冲击器及其使用方法
公开(公告)号：US5425802A
公开(公告)日：1995-06-20
申请号：US57748
申请日：1993-05-05
摘要： A virtual impactor that can remove essentially all of the particles from an airstream is disclosed. Also disclosed are a method of separating particles from the airstream using this virtual impactor, a method of concentrating the particulate matter in an airstream, and the concentrated airstream.
摘要翻译： 公开了一种可以从气流中基本上除去所有颗粒的虚拟冲击器。 还公开了使用该虚拟冲击器从空气流中分离颗粒的方法，将颗粒物质浓缩在气流中的方法和浓缩气流。
-
公开(公告)号：US5006227A
公开(公告)日：1991-04-09
申请号：US371986
申请日：1989-06-26
CPC分类号： B07B7/00 , G01N1/2208 , G05D7/0658 , G01N2001/2223 , G01N2001/242
摘要： A volumetric flow controller is used in connection with a virtual impactor classifier to control two separate flows in separate lines from an air pump. Each line has a flow control valve controlled in response to flow signals that are obtained from a pressure transducer that provides an electrical signal proportional to pressure. Pressure changes are sensed and the provided electrical signal is compared with a reference and will actuate a damper motor and move a flow control butterfly valve in the flow line for adjusting the flow when the pressure signal is different from the reference. The circuitry used provides for a dead band, so that changes in the butterfly valve setting will not occur unless the flow varies a selected amount, and also a timer control is used so that the motor operating the damper will be operated only at selected time intervals to prevent "hunting" or continuous operation of the valves. Further, temperature compensation signals can be provided as desired. The ability to control the flow volume provides for more accurate aerosol sampling and cut off points for the size of particles being sampled.
摘要翻译： 体积流量控制器与虚拟冲击器分级器结合使用，以控制与气泵分离的两条独立流。 每条管线都具有响应于从提供与压力成正比的电信号的压力传感器获得的流量信号而控制的流量控制阀。 感测到压力变化，并且将所提供的电信号与参考值进行比较，并且将致动阻尼电机并且在流动管线中移动流量控制蝶阀，以在压力信号不同于参考值时调节流量。 所使用的电路提供死区，因此除非流量改变所选择的量，否则蝶阀设置的变化将不会发生，并且还使用定时器控制，以便仅在选定的时间间隔内操作阻尼器的电机 以防止“狩猎”或连续操作阀门。 此外，可以根据需要提供温度补偿信号。 控制流量的能力提供了更精确的气溶胶取样和切割点，以便取样颗粒的大小。
-
-
-
搜索结果
4 条记录 (耗时 0.015 秒)
