公开(公告)号：US07592178B2

公开(公告)日：2009-09-22

申请号：US11064462

申请日：2005-02-23

Applicant: Yuqing Ding ,  Mark Shrewsbury ,  David K. Friday

Inventor： Yuqing Ding ,  Mark Shrewsbury ,  David K. Friday

IPC: B01L11/00 ,  G01N31/00 ,  G01N15/08 ,  G01N37/00 ,  B01D50/00 ,  B01D46/30 ,  A62B7/08

CPC classification number: B01D65/102

Abstract: An apparatus and method for testing the integrity of a filter under humid conditions is provided. The apparatus includes an injection assembly which is located on a first side of the filter and a detection assembly which is spaced from the injection assembly and located on a second side of the filter. The injection assembly injects a mixture of an air stream and a hydrophilic test chemical vapor of a known concentration through the filter. The injection assembly includes a sealed vaporizer which generates the mixture of the air stream and the hydrophilic test chemical vapor. The vaporizer includes a contact bed having an inert packing media for vaporizing the hydrophilic test chemical. The detection assembly detects a concentration peak of the hydrophilic test chemical vapor exiting the filter. The detection assembly includes a chemical sampling member, a chemical enriching member and a chemical detector. At least one micro-controller communicates with the injection assembly and the detection assembly for controlling same.

Abstract translation: 提供了一种用于在潮湿条件下测试过滤器完整性的装置和方法。 该装置包括位于过滤器的第一侧上的注射组件和与注射组件间隔开并位于过滤器第二侧上的检测组件。 注射组件通过过滤器将已知浓度的空气流和亲水测试化学蒸气的混合物注入。 注射组件包括密封蒸发器，其产生空气流和亲水测试化学蒸气的混合物。 蒸发器包括具有用于蒸发亲水测试化学品的惰性填充介质的接触床。 检测组件检测离开过滤器的亲水性测试化学气体的浓度峰值。 检测组件包括化学取样构件，化学富集构件和化学检测器。 至少一个微控制器与注射组件和检测组件通信以控制它们。