JPH06221970A - Device for absorbing pressure variation in housing for collecting vaporized sample gas - Google Patents
Device for absorbing pressure variation in housing for collecting vaporized sample gasInfo
- Publication number
- JPH06221970A JPH06221970A JP2724093A JP2724093A JPH06221970A JP H06221970 A JPH06221970 A JP H06221970A JP 2724093 A JP2724093 A JP 2724093A JP 2724093 A JP2724093 A JP 2724093A JP H06221970 A JPH06221970 A JP H06221970A
- Authority
- JP
- Japan
- Prior art keywords
- housing
- pressure
- housing body
- bag
- absorbing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】この発明は試料蒸散ガス収集用ハ
ウジングの圧力変動吸収用装置に関し、更に詳しくは、
自動車やその燃料などから蒸散されるハイドロカーボン
などの蒸散ガスを測定するために、自動車を収容して、
前記蒸散ガスを試料として収集するための試料蒸散ガス
収集用ハウジング(以下、単にSHEDという)内で、
シャシダイナモメータ上で走行を実現しながら蒸散ガス
を測定する新規な蒸散ガス測定試験で用いられる圧力変
動吸収用装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for absorbing pressure fluctuations in a housing for collecting sample vaporized gas, and more specifically,
In order to measure the vaporized gas such as hydrocarbon that is vaporized from the automobile and its fuel, house the automobile,
In a sample evaporation gas collection housing (hereinafter simply referred to as SHED) for collecting the evaporation gas as a sample,
The present invention relates to a pressure fluctuation absorbing device used in a new transpiration gas measurement test for measuring transpiration gas while realizing traveling on a chassis dynamometer.
【0002】[0002]
【従来の技術および発明が解決しようとする課題】従
来、自動車やその燃料などから蒸散されるハイドロカー
ボンなどの蒸散ガスを測定するために、シャシダイナモ
メータ上で走行を実現しながら蒸散ガスを測定するSH
ED法による蒸散ガス測定試験はなかった。2. Description of the Related Art Conventionally, in order to measure vaporized gases such as hydrocarbons vaporized from automobiles and fuels thereof, the vaporized gases are measured while running on a chassis dynamometer. SH
There was no transpiration gas measurement test by the ED method.
【0003】この発明は、上記問題に鑑みてなしたもの
で、その目的は、簡単な構成で、SHED内外の気圧差
に伴うハウジング本体の容積調節を自然に進行させてS
HEDとSHED外との気圧差の吸収を容易にできる試
料蒸散ガス収集用ハウジングの圧力変動吸収用装置を提
供することにある。The present invention has been made in view of the above problems, and an object thereof is to make the volume adjustment of the housing main body naturally proceed with S due to the pressure difference inside and outside the SHED with a simple structure.
It is an object of the present invention to provide a device for absorbing pressure fluctuations in a sample vaporization gas collection housing that can easily absorb a pressure difference between HED and the outside of SHED.
【0004】[0004]
【課題を解決するための手段】上記目的を達成するため
に、この発明の試料蒸散ガス収集用ハウジングの圧力変
動吸収用装置は、自動車やその燃料などから蒸散される
ハイドロカーボンなどの蒸散ガスを測定するために、自
動車が収納され、前記蒸散ガスを試料として収集するた
めの試料蒸散ガス収集用ハウジング内で、シャシダイナ
モメータ上で走行を実現しながら蒸散ガスを測定する蒸
散ガス測定試験で用いられる圧力変動吸収用装置であっ
て、ハウジング本体内部に設けられ、そのハウジング本
体内の気圧に対応して、空気を自然に吸入またはそれを
排出することによるハウジング本体内の容積変化でハウ
ジング本体の容積調節を行う圧力上昇・下降瞬間変動吸
収用バッグからなることを特徴とするものである。In order to achieve the above object, a device for absorbing pressure fluctuations in a sample vaporization gas collection housing according to the present invention is capable of absorbing vaporized gas such as hydrocarbon vaporized from an automobile or fuel thereof. For measurement, an automobile is housed and used in a transpiration gas measurement test to measure transpiration gas while realizing traveling on a chassis dynamometer in a sample transpiration gas collection housing for collecting the transpiration gas as a sample. A device for absorbing pressure fluctuations, which is provided inside a housing main body, and changes in volume of the housing main body due to a volume change in the housing main body caused by naturally sucking in air or discharging the air corresponding to the atmospheric pressure in the housing main body. It is characterized by comprising a bag for absorbing instantaneous fluctuation of pressure rise / fall for volume adjustment.
【0005】[0005]
【作用】前記本発明の試料蒸散ガス収集用ハウジングの
圧力変動吸収用装置は、ハウジング本体内部に圧力上昇
・下降瞬間変動吸収用バッグを配置したことから、蒸散
ガスを収集する間に、ハウジング本体内外の圧力に差が
生じると、それに対応して前記吸収用バッグ内に空気が
自然に流入またはそれが流出することで、前記吸収用バ
ッグの容積が変化して、ハウジング本体の容積を調整し
圧力差を吸収するものである。According to the apparatus for absorbing pressure fluctuations of the housing for collecting evaporated gas of the present invention, since the bag for absorbing instantaneous fluctuations of pressure rise / fall is arranged inside the housing body, the housing body is collected while the evaporated gas is collected. When there is a difference in pressure between the inside and the outside, air naturally flows into or out of the absorption bag in response to the difference, thereby changing the volume of the absorption bag and adjusting the volume of the housing body. It absorbs the pressure difference.
【0006】例えば、ハウジング本体内とハウジング本
体外の気圧に、ハウジング本体内が正圧になる差が生じ
ると、その圧力が前記吸収用バッグを加圧するようにな
る。この結果、前記吸収用バッグが、押されて吸収用バ
ッグ内から空気が自然に流出することで、ハウジング本
体内の容積を変化させて前記圧力差を吸収し、ハウジン
グ本体内とハウジング本体外との圧力を平衡させる。逆
に、ハウジング本体内が負圧になると、ハウジング本体
外の大気圧が前記吸収用バッグを加圧するようになり、
この結果、前記内へ空気が自然に流入することで、ハウ
ジング本体内の容積を変化させて前記圧力差を吸収し、
ハウジング本体内とハウジング本体外との圧力を平衡さ
せる。For example, when there is a difference between the pressure inside the housing body and the pressure outside the housing body so that the inside of the housing body becomes a positive pressure, the pressure causes the absorption bag to be pressurized. As a result, the absorbent bag is pushed and the air naturally flows out from the absorbent bag, thereby changing the volume in the housing main body to absorb the pressure difference, and the inside of the housing main body and the outside of the housing main body. Equilibrate the pressure of. On the contrary, when the inside of the housing body becomes negative pressure, the atmospheric pressure outside the housing body pressurizes the absorption bag,
As a result, the air naturally flows into the inside to change the volume in the housing body to absorb the pressure difference,
Equilibrate the pressure inside and outside the housing body.
【0007】[0007]
【実施例】以下、この発明の実施例を図面に基づいて説
明する。なお、それによってこの発明は限定を受けるも
のではない。図1において、試料蒸散ガス収集用ハウジ
ングの圧力変動吸収用装置は、自動車収納用ドアDから
収納される自動車1やその燃料などから蒸散されるハイ
ドロカーボンなどの蒸散ガスを測定するために、自動車
1が収納され、前記蒸散ガスを試料として収集するため
の試料蒸散ガス収集用ハウジング(SHED)2内で、
シャシダイナモメータ3上で走行を実現しながら蒸散ガ
スを測定する蒸散ガス測定試験で用いられるものであっ
て、ハウジング本体4内部に設けられ、そのハウジング
本体4内の気圧に対応して、空気を自然に吸入またはそ
れを排出することによるハウジング本体4内の容積変化
でハウジング本体4の容積調節を行う圧力上昇・下降瞬
間変動吸収用バッグ(以下、圧力吸収バッグという)5
から主としてなる。Embodiments of the present invention will be described below with reference to the drawings. However, the present invention is not limited thereby. In FIG. 1, a device for absorbing pressure fluctuations in a housing for collecting sample evaporated gas is used to measure evaporated gas such as hydrocarbon evaporated from the vehicle 1 or its fuel stored through a vehicle storage door D. 1 is housed in a sample vaporized gas collection housing (SHED) 2 for collecting the vaporized gas as a sample,
It is used in a transpiration gas measurement test for measuring transpiration gas while realizing traveling on the chassis dynamometer 3, and is provided inside the housing body 4, and air is supplied in accordance with the atmospheric pressure in the housing body 4. Bag for instantaneous pressure rise / fall instantaneous fluctuation absorption (hereinafter referred to as pressure absorption bag) 5 that adjusts the volume of the housing body 4 by the volume change in the housing body 4 due to spontaneous suction or discharge.
Mainly consists of.
【0008】更に、圧力吸収バッグ5が、ふつ化ビニー
ル樹脂などで変形可能に袋状に構成され、これは、空気
を流入出させるためにハウジング本体4外に設けられた
空気流入出手段7に接続されている。この空気流入出手
段7は、ハウジング本体4に設けられた連通口6を介し
て圧力吸収バッグ5に連通しており、ハウジング本体4
の初期容積を決定するために、圧力吸収バッグ5にバッ
グ膨張時の最大容積の半分程度の量の空気を供給するた
めの空気供給用ポンプ7aおよび電磁弁7bと、ハウジ
ング本体4内外の圧力に差が生じると、それに対応して
圧力吸収バッグ5内に空気を自然流入させたり、また
は、圧力吸収バッグ5内から空気を自然流出させるため
の電磁弁7cとで構成されている。さらに、空気供給用
ポンプ7aは、ハウジング本体4の初期容積を決定する
ためにハウジング本体4に送り込まれる空気量を計測す
る流量計(図示せず)に接続され、一方、電磁弁7c
は、圧力吸収バッグ5内への空気の自然流入量またはバ
ッグ5内からの自然流出量を計測する流量計(図示せ
ず)に接続されている。そのため、圧力吸収バッグ5の
容積の変化量を計測できてハウジング本体4の容積が分
かる構成になっている。また、圧力吸収バッグ5の開口
部は空気流出・流入時間を短くするために、連通口6と
も関連してできるだけ広く形成されるのが好ましい。Further, the pressure absorbing bag 5 is made of vinyl fluoride resin or the like so as to be deformable in the shape of a bag, which is connected to an air inflow / outflow means 7 provided outside the housing body 4 for inflowing / outflowing air. It is connected. The air inflow / outflow means 7 communicates with the pressure absorbing bag 5 through a communication port 6 provided in the housing body 4, and the housing body 4
In order to determine the initial volume of the pressure absorbing bag 5, an air supply pump 7a and a solenoid valve 7b for supplying an amount of air about half the maximum volume when the bag is inflated, and the pressure inside and outside the housing body 4 are determined. When there is a difference, the solenoid valve 7c is configured to allow air to naturally flow into the pressure absorbing bag 5 or to naturally flow air out of the pressure absorbing bag 5 accordingly. Further, the air supply pump 7a is connected to a flow meter (not shown) that measures the amount of air sent into the housing body 4 to determine the initial volume of the housing body 4, while the solenoid valve 7c is connected.
Is connected to a flow meter (not shown) that measures the amount of natural inflow of air into the pressure absorption bag 5 or the amount of natural outflow from the bag 5. Therefore, the volume of the pressure absorbing bag 5 can be measured and the volume of the housing body 4 can be known. Further, the opening of the pressure absorbing bag 5 is preferably formed as wide as possible in association with the communication port 6 in order to shorten the air outflow / inflow time.
【0009】また、本実施例では、シャシダイナモメー
タ3はローラ径220mm(φ)を有し、エンクロージ
ャーの外径寸法は、約11.5m(W)×4.7m
(D)×2.8m(H)となっている。Further, in this embodiment, the chassis dynamometer 3 has a roller diameter of 220 mm (φ), and the outer diameter dimension of the enclosure is about 11.5 m (W) × 4.7 m.
(D) × 2.8 m (H).
【0010】ハウジング本体4の容積は約140〜15
0m3 であり、40.6℃に温度調節され、蒸散ガス測
定試験が約75分行われる。The volume of the housing body 4 is about 140 to 15
The temperature is 0 m 3 and the temperature is adjusted to 40.6 ° C., and the evaporation gas measurement test is performed for about 75 minutes.
【0011】そして、ハウジング本体4内部の温度調節
は、熱源に温水タンク8、冷水タンク9を設けて加熱コ
イルと冷却コイルを分けることで行われており、各々の
熱交換フィンK内のフィンコイルに流れる流量を制御す
ることで所定の温度である、40.6℃が得られるよう
になっている。すなわち、温水タンク8、冷水タンク9
どちらもSHED2および自動車1の燃料タンクの温度
調節用熱源として機能している。例えば、ハウジング本
体4内は、熱交換フィンKで温度調節された風が自動車
1の前方下部位置Aより吹き出し、後方上部位置Bより
吸引される大気循環方式を有する。The temperature inside the housing body 4 is adjusted by providing a hot water tank 8 and a cold water tank 9 as heat sources to separate the heating coil and the cooling coil from each other. A predetermined temperature of 40.6 ° C. can be obtained by controlling the flow rate flowing to the. That is, the hot water tank 8 and the cold water tank 9
Both function as a heat source for temperature control of the SHED 2 and the fuel tank of the automobile 1. For example, the inside of the housing body 4 has an atmosphere circulation system in which the wind whose temperature is adjusted by the heat exchange fins K is blown from the front lower position A of the automobile 1 and sucked from the rear upper position B.
【0012】また、冷水タンク9には、冷水用の冷凍機
を含むチラーユニット10が接続されているとともに、
両者9,10は一次冷水ポンプ19で連通している。A chiller unit 10 including a refrigerator for cold water is connected to the cold water tank 9, and
Both 9 and 10 are connected by a primary cold water pump 19.
【0013】そして、ハウジング本体4内において、自
動車1の給気側にLA−4モード走行時のエンジンルー
ム冷却用の車速比例ファン11が設けられ、一方、自動
車1の排気側には、ハウジング本体4外に位置するコン
トロール架台(コントローラ)12からの燃料温度履歴
に合致させるように燃料タンク温調器13が設けられて
いる。このコントロール架台12はこのように燃料タン
ク温調のためのデータを処理する指令ユニットとして機
能するとともに、ハウジング本体4内部の温度調節機能
も有する。In the housing body 4, a vehicle speed proportional fan 11 for cooling the engine room during LA-4 mode traveling is provided on the air supply side of the vehicle 1, while the housing body is provided on the exhaust side of the vehicle 1. A fuel tank temperature controller 13 is provided so as to match the fuel temperature history from a control pedestal (controller) 12 located outside the vehicle. The control pedestal 12 thus functions as a command unit for processing the data for adjusting the temperature of the fuel tank, and also has the function of adjusting the temperature inside the housing body 4.
【0014】また、ハウジング本体4外のエンジン吸入
空気温調装置27は、運転中、自動車1へ空気を供給す
るためのものであり、さらに、ハウジング本体4には、
換気手段として、車速比例ファン11直上に換気用ファ
ン14と排気ファン15とが設けられている。なお、符
号16はSHED2の空調に関与する動力盤、符号1
7,18および25はそれぞれ燃料温調ポンプ、温水ポ
ンプおよび二次冷水ポンプであり、符号20は電気ヒー
タであり、符号21,22,23および24は、それぞ
れドレンパイプである。An engine intake air temperature control device 27 outside the housing body 4 is for supplying air to the automobile 1 during operation.
As ventilation means, a ventilation fan 14 and an exhaust fan 15 are provided directly above the vehicle speed proportional fan 11. Reference numeral 16 is a power panel involved in air conditioning of the SHED 2, reference numeral 1
Reference numerals 7, 18 and 25 are a fuel temperature control pump, a hot water pump and a secondary cold water pump, a reference numeral 20 is an electric heater, and reference numerals 21, 22, 23 and 24 are drain pipes, respectively.
【0015】この実施例のものは、上記構成を有するか
ら、ハウジング本体4は、蒸散ガスの収集時に、自動車
1の収納用ドアDが閉鎖され、そして、空気供給用ポン
プ7aの作動で電磁弁7bを介して圧力吸収バッグ5
に、バッグ膨張時の最大容積の半分程度の量の空気を供
給してハウジング本体4の初期容積を決定する。そし
て、自動車1から蒸散されるガスの収集を所定時間続け
ると、この蒸散ガスの収集を行う間において、例えば、
ハウジング本体4内とハウジング本体4外の気圧に、ハ
ウジング本体4内が正圧になる差が生じると、その圧力
が圧力吸収バッグ5を加圧するようになる。この結果、
圧力吸収バッグ5が押されて圧力吸収バッグ5内から空
気が自然に流出することで、ハウジング本体4内の容積
を変化させて圧力差を吸収し、ハウジング本体4内とハ
ウジング本体4外との圧力を平衡させることができる。
逆に、ハウジング本体4内が負圧になると、ハウジング
本体4外の大気圧が圧力吸収バッグ5を加圧するように
なり、この結果、圧力吸収バッグ5内へ空気が自然に流
入することで、ハウジング本体4内の容積を変化させて
圧力差を吸収し、ハウジング本体4内とハウジング本体
4外との圧力を平衡させることができる。Since this embodiment has the above-mentioned structure, the housing body 4 has the storage door D of the automobile 1 closed when the vaporized gas is collected, and the solenoid valve is actuated by the operation of the air supply pump 7a. Pressure absorbing bag 5 via 7b
Then, the initial volume of the housing body 4 is determined by supplying air in an amount of about half the maximum volume when the bag is inflated. Then, if the collection of the gas evaporated from the automobile 1 is continued for a predetermined time, during the collection of the evaporated gas, for example,
When there is a difference between the pressure inside the housing body 4 and the pressure outside the housing body 4 such that the pressure inside the housing body 4 becomes positive, the pressure causes the pressure absorbing bag 5 to be pressurized. As a result,
When the pressure absorbing bag 5 is pushed and air naturally flows out from the inside of the pressure absorbing bag 5, the volume inside the housing main body 4 is changed to absorb the pressure difference, and the inside of the housing main body 4 and the outside of the housing main body 4 are absorbed. The pressure can be balanced.
On the contrary, when the inside of the housing body 4 becomes negative pressure, the atmospheric pressure outside the housing body 4 pressurizes the pressure absorbing bag 5, and as a result, air naturally flows into the pressure absorbing bag 5, The volume inside the housing body 4 can be changed to absorb the pressure difference, and the pressure inside the housing body 4 and the pressure outside the housing body 4 can be balanced.
【0016】このように本実施例では、自動車1が収納
されるSHED2で、シャシダイナモメータ3上で走行
を実現しながら蒸散ガスを測定するに際して、構造が簡
単でメインテナンスがやりやすいという観点から、バッ
グを用いた自然吸排気型のバッグ方式を採用してハウジ
ング本体4内に圧力吸収バッグ5を取り付けたので、ハ
ウジング本体4内外の圧力に差が生じると、それに対応
して圧力吸収バッグ5内に空気が自然に流入またはそれ
が流出することで、圧力吸収バッグ5の容積が変化し
て、ハウジング本体4の容積を調整し圧力差を吸収で
き、ハウジング本体4とハウジング本体4外との気圧差
の吸収を容易にできる。As described above, in the present embodiment, in the SHED 2 in which the automobile 1 is housed, when the vaporized gas is measured while traveling on the chassis dynamometer 3, the structure is simple and the maintenance is easy. Since the pressure absorption bag 5 is installed in the housing body 4 by adopting the bag system of natural suction and exhaust type using a bag, when the pressure inside and outside the housing body 4 becomes different, the inside of the pressure absorption bag 5 is correspondingly changed. When the air naturally flows into or out of the housing, the volume of the pressure absorbing bag 5 changes, the volume of the housing body 4 can be adjusted to absorb the pressure difference, and the air pressure between the housing body 4 and the outside of the housing body 4 can be adjusted. The difference can be easily absorbed.
【0017】[0017]
【発明の効果】以上のようにこの発明では、自動車が収
納される試料蒸散ガス収集用ハウジング(SHED)
で、シャシダイナモメータ上で走行を実現しながら蒸散
ガスを測定するに際して、構造が簡単でメインテナンス
がやりやすいという観点から、バッグを用いた自然吸排
気型のバッグ方式を採用してSHEDのハウジング本体
内に圧力吸収バッグを取り付けたので、ハウジング本体
内外の圧力に差が生じると、それに対応して圧力吸収バ
ッグ内に空気が自然に流入またはそれが流出すること
で、圧力吸収バッグの容積が変化して、ハウジング本体
の容積を調整し圧力差を吸収でき、その結果、ハウジン
グ本体とハウジング本体外との気圧差の吸収を、簡単な
構成で、容易に行うことができる効果がある。As described above, according to the present invention, the sample vaporized gas collection housing (SHED) for housing the automobile is provided.
The SHED housing body adopts a natural suction / exhaust type bag system that uses a bag because the structure is simple and maintenance is easy to perform when measuring evaporated gas while traveling on a chassis dynamometer. Since the pressure-absorbing bag is installed inside, when there is a difference in pressure between the inside and outside of the housing body, the air naturally flows into or out of the pressure-absorbing bag, and the volume of the pressure-absorbing bag changes. Then, the volume of the housing body can be adjusted to absorb the pressure difference, and as a result, the pressure difference between the housing body and the outside of the housing body can be easily absorbed with a simple configuration.
【図1】この発明の一実施例を示す全体構成説明図であ
る。FIG. 1 is an explanatory diagram of an overall configuration showing an embodiment of the present invention.
1…自動車、2…SHED(試料蒸散ガス収集用ハウジ
ング)、3…シャシダイナモメータ、4…ハウジング本
体、5…圧力吸収バッグ(圧力上昇・下降瞬間変動吸収
用バッグ)。DESCRIPTION OF SYMBOLS 1 ... Automobile, 2 ... SHED (housing for sample evaporation gas collection), 3 ... chassis dynamometer, 4 ... housing main body, 5 ... pressure absorption bag (pressure rise / fall instantaneous fluctuation absorption bag).
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山▲崎▼ 和美 埼玉県和光市中央1丁目4番1号 株式会 社本田技術研究所内 (72)発明者 坂田 潔 埼玉県和光市中央1丁目4番1号 株式会 社本田技術研究所内 (72)発明者 大橋 秀樹 京都府京都市南区吉祥院宮の東町2番地 株式会社堀場製作所内 (72)発明者 岩井 保 大阪府東大阪市花園東町2丁目8番15号 株式会社ソダ工業内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yama ▲ saki ▼ Kazumi 1-4-1 Chuo, Wako-shi, Saitama Inside the Honda R & D Co., Ltd. (72) Inventor Kiyoshi Sakata 1-4 Chuo, Wako-shi, Saitama No. 1 HONDA R & D Laboratories, Inc. (72) Hideki Ohashi Inventor Hideki Ohashi 2 Higashimachi, Kichijoin Miya, Minami-ku, Kyoto-shi, Kyoto (72) Inventor Tamotsu Iwai 2-chome, Hanazono Higashimachi, Higashi-Osaka, Osaka 8th-15th Soda Industry Co., Ltd.
Claims (3)
イドロカーボンなどの蒸散ガスを測定するために、自動
車が収納され、前記蒸散ガスを試料として収集するため
の試料蒸散ガス収集用ハウジング内で、シャシダイナモ
メータ上で走行を実現しながら蒸散ガスを測定する蒸散
ガス測定試験で用いられる圧力変動吸収用装置であっ
て、ハウジング本体内部に設けられ、そのハウジング本
体内の気圧に対応して、空気を自然に吸入またはそれを
排出することによるハウジング本体内の容積変化でハウ
ジング本体の容積調節を行う圧力上昇・下降瞬間変動吸
収用バッグからなることを特徴とする試料蒸散ガス収集
用ハウジングの圧力変動吸収用装置。1. A sample evaporation gas collection housing for accommodating an automotive vehicle and collecting said evaporation gas as a sample for measuring evaporation gas such as hydrocarbon evaporated from an automobile or its fuel. A device for absorbing pressure fluctuations used in a transpiration gas measurement test that measures transpiration gas while running on a chassis dynamometer, which is installed inside the housing body and corresponds to the atmospheric pressure inside the housing body. Pressure fluctuations in the housing for sample evaporation gas collection characterized by a bag for absorbing instantaneous fluctuations in pressure rise and fall that adjust the volume of the housing body by volume change in the housing body by spontaneously sucking in or discharging it. Equipment for absorption.
が、ふつ化ビニール樹脂などで変形可能に構成されてい
る請求項1に記載の試料蒸散ガス収集用ハウジングの圧
力変動吸収用装置。2. The apparatus for absorbing pressure fluctuations in a sample evaporation gas collection housing according to claim 1, wherein the bag for absorbing instantaneous fluctuations in pressure rise / fall is configured to be deformable with vinyl fluoride resin or the like.
が、予め、バッグ膨張時の最大容積の半分程度の量の空
気を有してハウジング本体の初期容積が決定されている
請求項1に記載の試料蒸散ガス収集用ハウジングの圧力
変動吸収用装置。3. The initial volume of the housing main body is determined in advance by the bag for absorbing instantaneous fluctuations in pressure rise / fall, which has an amount of air of about half the maximum volume when the bag is inflated. For absorbing pressure fluctuations in the housing for collecting sample transpiration gas.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2724093A JP2964374B2 (en) | 1993-01-23 | 1993-01-23 | Apparatus for absorbing pressure fluctuations of the housing for collecting sample evaporation gas |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2724093A JP2964374B2 (en) | 1993-01-23 | 1993-01-23 | Apparatus for absorbing pressure fluctuations of the housing for collecting sample evaporation gas |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH06221970A true JPH06221970A (en) | 1994-08-12 |
JP2964374B2 JP2964374B2 (en) | 1999-10-18 |
Family
ID=12215559
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2724093A Expired - Fee Related JP2964374B2 (en) | 1993-01-23 | 1993-01-23 | Apparatus for absorbing pressure fluctuations of the housing for collecting sample evaporation gas |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2964374B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998022794A1 (en) * | 1996-11-19 | 1998-05-28 | Obayashi Corporation | Gas collecting apparatus |
US6136608A (en) * | 1997-01-07 | 2000-10-24 | Obayashi Corporation | Method for determining formaldehyde present in air |
US6446514B1 (en) * | 2000-01-18 | 2002-09-10 | Barringer Research Limited | Combined particle/vapor sampler |
CN107655746A (en) * | 2017-11-02 | 2018-02-02 | 山东交通学院 | A kind of dynamic characteristic test apparatus of spiral case inner chamber pressure-bearing |
-
1993
- 1993-01-23 JP JP2724093A patent/JP2964374B2/en not_active Expired - Fee Related
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998022794A1 (en) * | 1996-11-19 | 1998-05-28 | Obayashi Corporation | Gas collecting apparatus |
US6139801A (en) * | 1996-11-19 | 2000-10-31 | Obayashi Corporation | Gas collecting apparatus |
US6136608A (en) * | 1997-01-07 | 2000-10-24 | Obayashi Corporation | Method for determining formaldehyde present in air |
US6446514B1 (en) * | 2000-01-18 | 2002-09-10 | Barringer Research Limited | Combined particle/vapor sampler |
CN107655746A (en) * | 2017-11-02 | 2018-02-02 | 山东交通学院 | A kind of dynamic characteristic test apparatus of spiral case inner chamber pressure-bearing |
Also Published As
Publication number | Publication date |
---|---|
JP2964374B2 (en) | 1999-10-18 |
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