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公开(公告)号：US20220026333A1
公开(公告)日：2022-01-27
申请号：US17494449
申请日：2021-10-05
Applicant: Aerosol Dynamics Inc.
Inventor： Susanne Vera Hering , Gregory Stephen Lewis , Steven Russel Spielman
IPC: G01N15/06
Abstract: A method and apparatus to create water vapor supersaturation and particulate counts from an air sample. The method and apparatus include introducing an air sample into a chamber by passing a flow into the chamber through the inlet by pumping at the outlet. The method further includes closing the inlet while continuing the pumping to exhaust the air sample from the chamber through the outlet. The pumping is performed at a rate operable to reduce pressure inside the chamber such that the air sample in the central portion of the chamber cools, and water vapor from walls of the chamber has time to diffuse into the air sample in the chamber from the walls. The cycles are repeated by continuously repeating the introducing and closing. The walls of the chamber may be wet or dry.
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公开(公告)号：US12234440B2
公开(公告)日：2025-02-25
申请号：US16912486
申请日：2020-06-25
Inventor： Arantzazu Eiguren Fernandez , Gregory Stephen Lewis , Steven Russel Spielman , Chang-Yu Wu , Trevor Benson Tilly
Abstract: An apparatus and method for the delivery and deposition of particles air-liquid-interface (ALI) cell cultures includes a sample inlet coupled to a growth tube having interior walls that are wet. The growth tube is configured to operate at a first temperature along a first length of the tube and a second temperature along a second length positioned between the first length and a growth tube outlet. The apparatus also includes a nozzle plate having a plurality of nozzles. The exposure chamber adapted to hold cell cultures at an air-liquid interface positioned underneath the plurality of nozzles and a temperature regulator adapted to control a temperature of the exposure chamber. The apparatus also includes a controller including instructions operable to cause the controller to maintain a relative humidity within the exposure chamber by controlling at least the second temperature of the growth tube and the temperature of the exposure chamber.
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公开(公告)号：US11029240B2
公开(公告)日：2021-06-08
申请号：US16159604
申请日：2018-10-12
Applicant: Aerosol Dynamics Inc.
Inventor： Susanne Vera Hering , Steven Russel Spielman , Gregory Stephen Lewis
Abstract: A wick liquid sensor suitable for use in a particle condensation device is provided. The sensor includes a light source configured to illuminate a surface of the wick. A detector is configured to detect wick reflected light from the light source and determine the intensity of reflected light. The wick is formed from a porous media that is wettable by the liquid, and becomes translucent when filled with the liquid. The amount of reflectivity decreases as the saturation content of the liquid in the wick increases.
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公开(公告)号：US20140033915A1
公开(公告)日：2014-02-06
申请号：US14043455
申请日：2013-10-01
Applicant: Aerosol Dynamics Inc.
Inventor： Susanne Vera Hering , Steven Russel Spielman , Gregory Stephen Lewis , Nathan Michael Kreisberg
IPC: B01D47/00
CPC classification number: B01D47/00 , B01D5/0009 , B01D53/1475 , B01D53/18 , F25J3/08 , F25J2200/70 , G01M15/102 , G01N15/06 , G01N15/065 , G01N2015/0038 , G01N2015/1481
Abstract: A system and method for particle enlargement with continuously wetted wicks includes a container into which a flow of particle-laden air is introduced in a laminar manner through an inlet and to an outlet. The container has a first section, a second section and a third section though which the particle-laden air flows between the inlet and the outlet. The temperature of the second section is warmer than that of the first section at the inlet and the third section at the outlet. In one embodiment, a continuous wick spanning an interior wall of the first second, second section and third section, said wick being capable of internally transporting liquid water along its length is provided. Alternatively, a wick characterized by a bubble point pressure has one side in contact with air and an opposing side mounted adjacent to the interior wall of a housing with a gap formed between the wick and the housing, wherein the wick is used with a water reservoir such that the pressure difference between the air flow and the water filled gap is less than the bubble point pressure of the wick material.
Abstract translation: 具有连续润湿的芯的颗粒增大的系统和方法包括容器，通过入口和出口以层流方式将颗粒载气的空气流引入该容器中。 容器具有第一部分，第二部分和第三部分，通过该第一部分，颗粒载满的空气在入口和出口之间流动。 第二部分的温度比入口处的第一部分和出口处的第三部分的温度更暖。 在一个实施例中，提供横跨第一第二，第二部分和第三部分的内壁的连续的芯，所述芯能够沿其长度内部输送液态水。 或者，以泡点压力为特征的芯具有与空气接触的一侧，并且相邻侧安装在壳体的内壁附近，在芯和壳体之间形成有间隙，其中芯与水槽一起使用 使得空气流与填充水的间隙之间的压差小于芯材料的泡点压力。
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公开(公告)号：US20220128445A1
公开(公告)日：2022-04-28
申请号：US17568940
申请日：2022-01-05
Applicant: Aerosol Dynamics Inc.
Inventor： Susanne Vera Hering , Gregory Stephen Lewis , Steven Russel Spielman
IPC: G01N15/06
Abstract: A method and apparatus to create water vapor supersaturation and particulate counts from an air sample. The method and apparatus include introducing an air sample into a chamber connected to an optical detector and an outlet by pumping at the outlet. The method further includes passing air through the chamber and optical detector in a steady flow, and subsequently closing the inlet while continuing the pumping to expand the air sample and exhaust a portion of the air sample through the optical detector. The walls of the particle chamber are wetted with a fluid such as water, and one portion of the wall is warmer than the other portions such that there is some condensational growth prior to the expansion, and yet more condensational growth during the expansion. The cycles are repeated by continuously repeating the introducing, passing and closing.
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Patent Agency Ranking
公开(公告)号：US10883910B2
公开(公告)日：2021-01-05
申请号：US16372643
申请日：2019-04-02
Applicant: AEROSOL DYNAMICS INC.
Inventor： Susanne Vera Hering , Steven Russel Spielman , Gregory Stephen Lewis
Abstract: An apparatus and method for condensationally enlarging particles in a flow of air or other gas. The apparatus includes a coiled tube having a tube diameter and a coil diameter, the tube having an input receiving the flow and an output, the tube having a length between the input and the output. The walls of the tube are wetted with a condensing fluid. The walls of the first portion of the coiled tube are held a temperature that is lower than the highest temperature in the second portion of the tube. The tube may have a third vapor recovery portion with wall temperature lower than the highest temperature in the second portion, and which optionally may not be coiled. While heating and cooling, the method includes introducing a flow into an interior of the tube at an input, the flow moving the output.
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公开(公告)号：US20190224637A1
公开(公告)日：2019-07-25
申请号：US16372677
申请日：2019-04-02
Applicant: AEROSOL DYNAMICS INC.
Inventor： Susanne Vera Hering , Steven Russel Spielman , Gregory Stephen Lewis
Abstract: An apparatus and method for creating enlarged particles in a flow. The apparatus includes a coiled tube having a tube diameter and a coil diameter, the tube having an input receiving the flow and an output, the tube having a length between the input and the output. A heater heats a first portion of the tube along a first, longitudinal portion of the tube, and a cooler cools a second, longitudinal portion of the tube along at least a second portion of the tube. The method includes heating a first portion of the tube along a first longitudinal portion of the tube, and simultaneously cooling a second portion of the tube along at least a second longitudinal portion of the tube. While heating and cooling, the method includes introducing a flow into an interior of the tube at an input, the flow moving the output.
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公开(公告)号：US20140029154A1
公开(公告)日：2014-01-30
申请号：US14043662
申请日：2013-10-01
Applicant: Aerosol Dynamics Inc.
Inventor： Susanne Vera Hering , Steven Russel Spielman , Gregory Stephen Lewis
IPC: B03C3/38
CPC classification number: B03C3/38 , B01D5/0009 , B01D53/002 , B01D53/1475 , B01D2257/504 , G01N15/065 , G01N2015/0038 , G01N2015/1481
Abstract: A particle charging method and apparatus are provided. An ion source is applied to a particle laden flow. The flow is introduced into a container in a laminar manner. The container has at least a first section, a second section and a third section. The first section includes wetted walls at a first temperature. A second section adjacent to the first section has wetted walls at a second temperature T2 greater than the first temperature T1. A third section adjacent to the second section has dry walls provided at a temperature T3 equal to or greater than T2. Additional water removal and temperature conditioning sections may be provided.
Abstract translation: 提供了一种粒子充电方法和装置。 将离子源施加到载满颗粒的流。 将流体以层流方式引入容器中。 容器至少具有第一部分，第二部分和第三部分。 第一部分包括第一温度下的湿壁。 与第一部分相邻的第二部分具有大于第一温度T1的第二温度T2的湿壁。 与第二部分相邻的第三部分具有设置在等于或大于T2的温度T3的干壁。 可以提供额外的除水和温度调节部分。
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公开(公告)号：US12111241B2
公开(公告)日：2024-10-08
申请号：US17568940
申请日：2022-01-05
Applicant: Aerosol Dynamics Inc.
Inventor： Susanne Vera Hering , Gregory Stephen Lewis , Steven Russel Spielman
IPC: G01N15/06 , G01N15/075
CPC classification number: G01N15/06 , G01N15/075
Abstract: A method and apparatus to create water vapor supersaturation and particulate counts from an air sample. The method and apparatus include introducing an air sample into a chamber connected to an optical detector and an outlet by pumping at the outlet. The method further includes passing air through the chamber and optical detector in a steady flow, and subsequently closing the inlet while continuing the pumping to expand the air sample and exhaust a portion of the air sample through the optical detector. The walls of the particle chamber are wetted with a fluid such as water, and one portion of the wall is warmer than the other portions such that there is some condensational growth prior to the expansion, and yet more condensational growth during the expansion. The cycles are repeated by continuously repeating the introducing, passing and closing.
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公开(公告)号：US11789166B2
公开(公告)日：2023-10-17
申请号：US16911368
申请日：2020-06-24
Applicant: Aerosol Dynamics Inc.
Inventor： Susanne Vera Hering , Gregory Stephen Lewis , Steven Russel Spielman , Mark R. Stolzenberg
CPC classification number: G01T1/171 , G01N15/0205 , G01N15/0211 , G01N15/065 , G01N15/1459 , G01T1/172
Abstract: An approach for counting particles suspended in a flow of gas or liquid in instruments that direct the flow through an illuminated region. Pulses are detected when the signal is below a threshold amplitude and moves above the threshold amplitude. This movement above the threshold creates a dead time during which only one pulse is detected until the signal amplitude moves sufficiently below the threshold such that a subsequent particle creates a distinct pulse. After counting the number of pulses, and determining the measured live time that the signal is below the threshold value, an initial particle concentration is calculated, and the calculation corrected for coincidence by calculating an actual live time as a measured live time minus a constant multiplied by the number of distinctly counted pulses, where the constant has the units of time. From this, particle concentrations in a volume can be determined.
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