JP6258393B2 - 凝縮装置 - Google Patents
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- JP6258393B2 JP6258393B2 JP2016079061A JP2016079061A JP6258393B2 JP 6258393 B2 JP6258393 B2 JP 6258393B2 JP 2016079061 A JP2016079061 A JP 2016079061A JP 2016079061 A JP2016079061 A JP 2016079061A JP 6258393 B2 JP6258393 B2 JP 6258393B2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
- B05C3/005—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material incorporating means for heating or cooling the liquid or other fluent material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/065—Investigating concentration of particle suspensions using condensation nuclei counters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0027—Condensation of vapours; Recovering volatile solvents by condensation by direct contact between vapours or gases and the cooling medium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
- B05C3/02—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N2015/0042—Investigating dispersion of solids
- G01N2015/0046—Investigating dispersion of solids in gas, e.g. smoke
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0011—Sample conditioning
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/6416—With heating or cooling of the system
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
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- General Health & Medical Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Sampling And Sample Adjustment (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Description
−関連する全てのエーロゾル粒子が除去された清浄な気体媒質、例えば、清浄空気のための1つの流入口1(「第1流入口」)を有する蒸発チャンバ2と、
−問題のナノ粒子を含む試料気体(例えば空気)の流れを蒸発チャンバ2に引き込み、第1流入口1から離れて、例えば、第1流入口1が蒸発チャンバ2の下部に位置する時には蒸発チャンバ2の上部に位置する他の流入口8(「第2流入口」)と、
−温度センサ4と熱的に十分に緊密に接触し、作動流体により濡れ可能な多孔質支持体6により覆われる加熱要素3と、
−多孔質支持体6は、低平衡の蒸気圧力の作動流体、例えば、フタル酸ジメチルのような半揮発性有機化合物に浸され、作動流体を十分高い蒸気密度のままに維持するレベルに多孔質支持体6の表面温度を保つ温度制御装置5と、
−高熱伝導率材料で構成され、問題のナノ粒子上に作動流体の滴が形成され、単一の粒子計数器により検出および計数可能とさせる大きさに滴を成長させるのに十分長い流出口を兼ねた凝縮器7と、
凝縮器7は、第2流入口8と近接してまたは対向して位置し、第1および第2流入口を介して蒸発チャンバ2に流入する搬送気体流と試料気体流とを効率的に混合し、第2流入口8と整列して位置し、
−凝縮器7を効果的に冷却できる位置に設けられ、凝縮器7の表面温度を、作動流体滴の形成および成長を維持するレベルに保つ温度冷却装置10と、
を具えている。温度冷却装置10は、凝縮器7の効果的な冷却が維持されうる位置に配置される。
本発明による装置のいくつかの例が組み立てられて試験されており、それらを以下に示す。
図8に示すように構成されたある例において、蒸発チャンバ(飽和チャンバ)2を、(内径12mmで)長さ30mmのステンレス剛で形成した。流入口、ノズルおよび流出口には、内径3mmのステンレス剛管を用いた。冷却要素を、凝縮器の表面から15mmの位置に設けた5V DCの小型ファンで構成した。凝縮器を、内径6mmで長さ60mmのステンレス剛管で形成し、加熱要素を、蒸発チャンバ2のステンレス剛製の円筒部の底部周辺に位置するように十分長い石英ファイバ材料で被覆されたNiCr加熱要素で構成した。約0.5mlのフタル酸ジメチルを、作動流体として蒸発チャンバ2に注入した。ナノ粒子上に形成された微小滴を、MetOneレーザ光学粒子計数器で計数した。SMPS(TSI社製)、小型のSAC寸法分光計(Naneum社製)、および小型の3007CPC(TSI社のmodel3007)に対して、装置を試験した。酸化クロムのナノ粒子および大気エーロゾルを試験に用いた。試験では、本発明の装置により、ナノ粒子を直径1.2μmまで拡大できるとともに、検出範囲の下限を4nmとすることができることがわかった。
MetOneレーザ光学粒子計数器に連結された図2に示す装置を用いて測定されたエーロゾル粒子数密度(N)と、TSI社製の小型3007CPCを用いて測定されたエーロゾル粒子数密度(N)との比較を行った。流入口1を介して蒸発チャンバ2に流入する清浄空気流を0.3リットル/分に設定し、流入口8を介して流入する試料気体流を0.5リットル/分に設定した。酸化クロムのナノ粒子および大気エーロゾルを比較試験に用いた。
上述した本発明の特定の実施例に対する種々の変更および代替を、本発明の原理から逸脱することなく可能であることが容易に明らかである。このような全ての変更および代替は、この出願に含まれるものである。
Claims (9)
- 気体混入粒子の寸法を大きくし、前記気体混入粒子を粒子検出器により検出可能とする装置に使用するよう構成された凝縮器において、
前記凝縮器は、使用時に、前記装置の蒸発チャンバの流出口と流体連通しており、
前記凝縮器は、前記粒子検出器に接続するための流出口を有し、
前記凝縮器には、前記凝縮器の内部壁から凝縮物質を除去する手段が設けられており、
前記凝縮物質を除去する手段が、その全長または一部に亘って延びる1つ以上の排出ダクトを有し、前記排出ダクトは、液体凝縮物が通過可能な透過性の壁または膜により前記凝縮器の内部から分離され、かつ、前記排出ダクトから液体凝縮物を抽出するためにポンプに接続可能な1つ以上の流出口を有することを特徴とする凝縮器。 - 請求項1に記載の凝縮器において、前記排出ダクトが、1つまたはそれ以上の長手方向に延びる透過性の壁または膜により前記凝縮器の少なくとも長さの一部に亘って前記凝縮器の内部を分割することにより形成されることを特徴とする凝縮器。
- 請求項2に記載の凝縮器において、前記透過性の壁または膜には、前記凝縮器の内部から前記排出ダクトへ凝縮物を流す毛細管が設けられることを特徴とする凝縮器。
- 請求項3に記載の凝縮器において、前記壁または膜が、(a)0.1mm未満の大きさの毛細管を有するセラミックまたはステンレス鋼フィルタ材料、または(b)多孔質材料から形成されることを特徴とする凝縮器。
- 請求項1乃至4の何れか一項に記載の凝縮器において、前記粒子検出器により検出可能な問題の粒子の検出サイズ下限を制御し、これによりナノ粒子の大きさ分布を得るために、前記凝縮器またはその一部の温度を変化させる手段を具えていることを特徴とする凝縮器。
- 請求項1乃至5の何れか一項に記載の凝縮器において、
流入口と、流出口と、内側長さ、内側幅および内側高さを有する中空内部とを具える凝縮器のボディ部と、
前記凝縮器のボディ部の流入口に接続され、前記凝縮器のボディ部の内側幅に亘って延びる流入流れ分配管と、
前記凝縮器のボディ部の流出口に接続され、前記凝縮器のボディ部の内側幅に亘って延びる流出流れ分配管とを具え、
前記凝縮器のボディ部の内側高さは、前記流入流れ分配管および流出流れ分配管のそれぞれの対応する内側高さよりも低くなっており、
前記流入流れ分配管および流出流れ分配管のそれぞれの壁には、前記凝縮器のボディ部の中空内部と連通する1つ以上のスロットまたは穴が設けられており、前記流入流れ分配管から前記凝縮器の中空内部を介して前記流出流れ分配管に至る流路が形成されることを特徴とする凝縮器。 - 請求項6に記載の凝縮器において、各流れ分配管の内側断面領域は、前記凝縮器のボディの内側断面領域(内側幅×内側高さ)よりも大きいことを特徴とする凝縮器。
- 請求項7に記載の凝縮器において、各流れ分配管の内側断面領域の前記凝縮器のボディの内側断面領域(内側幅×内側高さ)に対する比は、1.1、または2、または3よりも大きいことを特徴とする凝縮器。
- 請求項6乃至8の何れか一項に記載の凝縮器において、前記流れ分配管の壁が前記凝縮器のボディの中空内部へと開口する細長いスロットを有し、前記凝縮器のボディの内側高さの前記スロットの幅に対する比は1.1、または2、または3よりも大きいことを特徴とする凝縮器。
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US10792694B2 (en) | 2020-10-06 |
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US20150000595A1 (en) | 2015-01-01 |
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CN105311848B (zh) | 2017-09-05 |
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JP2011521213A (ja) | 2011-07-21 |
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