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公开(公告)号：US11815436B2
公开(公告)日：2023-11-14
申请号：US17819255
申请日：2022-08-11
发明人： Changgong Wang , Zhili Zuo , Chang Ke , Song-Moon Suh
CPC分类号： G01N1/02 , G01N15/02 , G01N15/065 , G01N15/14 , G01N2001/028 , G01N2015/0019 , G01N2015/0294 , G01N2015/1493 , G01N2015/1497
摘要： A stream including at least one of solid CO2 particles or CO2 droplets is directed toward an article including surface particles. The stream causes at least a portion of the surface particles on the article to dislodge from a surface of the article. A purge cycle to transport at least a portion of the dislodged surface particles away from the surface of the article is initiated. The purge cycle includes generating a laminar flow at a first velocity for a first time period and subsequently generating a laminar flow at a second velocity for a second time period. A determination is made of whether a number of particles transported away from the surface of the article satisfies a particle criterion. In response to a determination that the number of particles transported away from the article does not satisfy the criterion, the purge cycle is re-initiated.
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公开(公告)号：US11686660B2
公开(公告)日：2023-06-27
申请号：US17052950
申请日：2019-06-06
申请人： Sensors, Inc.
CPC分类号： G01N15/065 , G01N1/2252 , G01N2015/0046
摘要： A particle concentration analyzing system for testing particle concentrations in a fluid sample, such as engine emission particle concentration present in the exhaust of an engine. The particle concentration analyzing system includes a condensation particle counter having a saturation chamber, a condenser, and a laser optic particle counter. The analyzing system further includes a working fluid tank, a working fluid pump, and a sampling probe. The system provides a robust analysis system for a user to test vehicle emissions without being highly trained on the device, as the device is protected from misuse. A position sensitive sensor is used to ensure that the system is not damaged if the system is tipped over or placed in a position that would produce false results. Additional features include differential pressure sensors, a sealed and replaceable tamper resistant working fluid tank, a solvent recovery system, an anti-cheat device, and fluid purity sensors.
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公开(公告)号：US09958371B2
公开(公告)日：2018-05-01
申请号：US14665605
申请日：2015-03-23
CPC分类号： G01N15/0211 , G01N15/0255 , G01N15/065 , G01N2015/0053 , G01N2015/0088 , G01N2015/0261
摘要： A method and system of measuring the size distribution of particles within dilute colloids, for example, through variation of the minimum detected size of aerosolized colloid particles. The method of determining the size distribution of particles in a fluid, involves forming a stream of aerosol droplets of the fluid, the droplets containing particles and dissolved material, evaporating the droplets to generate particles, and measuring the concentration of particles by varying a detection threshold. A system or apparatus for determining the size distribution of particles in a fluid, includes a droplet former for forming a stream of aerosol droplets of the fluid, the droplets containing particles and dissolved material, and a condensation particle detector for evaporating the droplets to generate particles and for measuring the concentration of particles, the condensation particle detector having a variable detection threshold.
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4.发明授权公开(公告)号：US09897527B2
公开(公告)日：2018-02-20
申请号：US14912487
申请日：2014-08-28
申请人： AVL LIST GMBH
发明人： Martin Kraft , Alexander Bergmann
CPC分类号： G01N15/065 , G01N2015/0046
摘要： An n-alkane with the general chemical formula CnH2n+2 with an ordinal number n of ten, eleven or twelve is used as operating medium (7) for a condensation nucleus counter for exhaust gases from internal combustion engines (4) by which individual particles contained in the exhaust gas can be counted.
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公开(公告)号：US09885648B2
公开(公告)日：2018-02-06
申请号：US15064713
申请日：2016-03-09
发明人： Masaki Hirano , Yuichi Kuroda , Kenichi Otsuka
CPC分类号： G01N15/065 , G01N2015/0046
摘要： A particle detecting apparatus has a condensing and growing unit to condense and grow a condensing component over particles contained in a gas while the gas imported through an inflow port is transported from a low temperature portion to a high temperature portion, a particle detector to detect a concentration of the particles contained in the gas discharged from an outflow port of the condensing and growing unit, a particle feeder to feed, to the inflow port of the condensing and growing unit, a test gas containing test particles whose particle diameter and the number of particles per unit volume are known, and a first determinator to determine whether a concentration of the test particles contained in the test gas detected by the particle detector has a predetermined value.
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公开(公告)号：US20170350801A1
公开(公告)日：2017-12-07
申请号：US15611497
申请日：2017-06-01
CPC分类号： G01N15/065 , G01N2015/03 , G01N2015/1486
摘要： The systems and methods provided herein relate generally to the prevention of migration of condensate in a condensation particle counter between components designed to handle condensate (e.g. saturator, condenser, condensate reservoir) and components which may be damaged by the condensate (e.g. detection and flow control devices).
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公开(公告)号：US20160231221A1
公开(公告)日：2016-08-11
申请号：US15024286
申请日：2014-10-06
发明人： Martyn Vincent Twigg
CPC分类号： G01N15/065 , F01N3/0842 , F01N3/085 , F01N3/281 , F01N3/2828 , F01N2560/05 , G01N1/34 , G01N33/0013 , G01N2015/0038
摘要： An improved instrument for counting nanoparticles suspended in a gas, particularly in a combustion gas, incorporates a counter device such as a Condensation Particle Counter, incorporates a pre-treatment stage to remove substances which can cause nucleation and false results, comprising a flow through monolith carrying an oxidation catalyst and an absorber, wherein the monolith has a call density of no more than 400 cells per square inch and an open area of at least 80%.
摘要翻译： 一种用于计数悬浮在气体中，特别是在燃烧气体中的纳米颗粒的改进仪器结合了诸如冷凝颗粒计数器之类的计数器装置，其中包含预处理阶段以去除可引起成核和假结果的物质，包括流过整体 携带氧化催化剂和吸收剂，其中整料具有不超过400个单位/平方英寸的呼吸密度和至少80％的开放面积。
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8.发明授权Apparatus and method for improving particle count accuracy in low pressure applications 有权用于提高低压应用中颗粒计数精度的装置和方法公开(公告)号：US09222859B2
公开(公告)日：2015-12-29
申请号：US14111603
申请日：2012-04-12
CPC分类号： G01N1/40 , G01N15/065
摘要： A saturator block assembly that is adapted for use with a condensation particle counter is described. The saturator block assembly is comprised of a member that is at least partially formed from a porous material that is adapted to absorb a working fluid. The saturator block assembly also includes at least one open column formed through the porous member. The open column is parallel with a length of the member and is adapted to emit the working fluid in vapor form from the porous material. The saturator block assembly is further comprised of an outer surface, and is adapted to operate at low pressure or low pressure transient applications. A volume of the porous material is configured so as to reduce the amount of air capable of being trapped in the pores of the porous material during low pressure or low pressure transient applications.
摘要翻译： 描述了适用于冷凝颗粒计数器的饱和器块组件。 饱和器块组件包括至少部分地由适于吸收工作流体的多孔材料形成的构件。 饱和器块组件还包括通过多孔构件形成的至少一个开放柱。 打开的柱与构件的长度平行并且适于从多孔材料发射蒸气形式的工作流体。 饱和器块组件还包括外表面，并且适于在低压或低压瞬态应用下操作。 多孔材料的体积被配置为在低压或低压瞬态应用期间减少能够被捕获在多孔材料的孔中的空气的量。
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9.发明申请Apparatus And Method For Removal Of Gas Phase Artifacts From Engine Exhaust During Testing 有权测试期间从发动机排气中除去气相物质的装置和方法公开(公告)号：US20150300225A1
公开(公告)日：2015-10-22
申请号：US14254674
申请日：2014-04-16
CPC分类号： F01N3/02 , B01D53/02 , B01D2253/108 , B01D2257/30 , B01D2257/702 , G01N1/2205 , G01N15/0618 , G01N15/065 , G01N33/0014 , G01N2015/0046
摘要： An apparatus and method for removal of gas phase artifacts from engine exhaust undergoing evaluation for the presence of particulate matter as collected on a particulate matter filter. More specifically, the disclosure relates to an apparatus and method for removal of gas phase artifacts from engine exhaust being tested and prior to the exhaust reaching a particulate matter (PM) filter. Such removal provides that the PM filter indicates relatively more accurate evaluation of the particulate matter present.
摘要翻译： 一种用于从发动机废气中除去气相赝像的装置和方法，该装置和方法用于评估在颗粒物质过滤器上收集的颗粒物质的存在。 更具体地，本公开涉及一种用于从正被测试的发动机排气和在排气到达颗粒物质（PM））过滤器之前去除气相伪影的装置和方法。 这种去除规定了PM过滤器对于存在的颗粒物质的相对更准确的评估。
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10.发明授权公开(公告)号：US09140631B2
公开(公告)日：2015-09-22
申请号：US13348826
申请日：2012-01-12
CPC分类号： G01N1/2252 , G01N1/2202 , G01N15/065 , G01N33/005 , G01N2001/2264 , Y10T137/2499
摘要： A method of measuring characteristics of a critical orifice type constant flow rate instrument is applied to a dilution mechanism including dilution units in series. Diluent gas of one dilution unit and diluent gas of the other dilution unit are kept flowing in a derivation flow passage for deriving redundant gas of the corresponding one dilution unit in a manner that the total flow rate thereof is equal to a prescribed constant flow rate and that the flow rate of the diluent gas from the corresponding dilution unit is equal to the flow rate in use. The flow rate characteristics of the critical orifice type constant flow rate instrument are measured based on at least an upstream side pressure of the critical orifice type constant flow rate instrument provided in the derivation flow passage at this time.
摘要翻译： 将临界孔型恒定流量仪器的特性测定方法应用于包括稀释单元的稀释机构。 一个稀释单元的稀释气体和另一个稀释单元的稀释气体在导流流道中保持流动，以导出相应的一个稀释单元的冗余气体，使得其总流量等于规定的恒定流量， 来自相应的稀释单元的稀释气体的流量等于使用的流量。 此时临界孔型恒流量仪器的流量特性至少基于在此推导流路中提供的临界孔型恒定流量仪表的上游侧压力进行测量。
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