DE19503644A1 - Emission test chamber - Google Patents

Emission test chamber

Info

Publication number
DE19503644A1
DE19503644A1 DE1995103644 DE19503644A DE19503644A1 DE 19503644 A1 DE19503644 A1 DE 19503644A1 DE 1995103644 DE1995103644 DE 1995103644 DE 19503644 A DE19503644 A DE 19503644A DE 19503644 A1 DE19503644 A1 DE 19503644A1
Authority
DE
Germany
Prior art keywords
test
chamber
test chamber
atmosphere
emission
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.)
Withdrawn
Application number
DE1995103644
Other languages
German (de)
Inventor
Wolfgang Dr Ing Lorenz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE1995103644 priority Critical patent/DE19503644A1/en
Publication of DE19503644A1 publication Critical patent/DE19503644A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/22Devices for withdrawing samples in the gaseous state
    • G01N1/2226Sampling from a closed space, e.g. food package, head space
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/22Devices for withdrawing samples in the gaseous state
    • G01N1/2226Sampling from a closed space, e.g. food package, head space
    • G01N2001/2241Sampling from a closed space, e.g. food package, head space purpose-built sampling enclosure for emissions

Abstract

The test chamber, with a variable vol. to register and analyse emissions from test bodies, holds the test body for a defined time span, under set conditions, for matter to be released into the controlled atmosphere of the test and emission chamber in a closed system. When the emission time has ended, part of the vol. of the test chamber atmosphere is defined and extracted for analysis without altering the system parameters of the test chamber apart from a change in the chamber vol. At no time is there accidental contact or exchange of matter between the system of the test chamber atmosphere and the ambient environment or other systems.

Description

Die Erfindung bezieht sich auf eine Prüf- bzw. Emissionskammer mit variablem Kam­ mervolumen zur Erfassung und Analyse von Emissionen aus Prüfkörpern.The invention relates to a test or Emission chamber with variable cam mervolume to record and analyze Emissions from test specimens.

Unter Emission versteht man die Abgabe von Stoffen an die Umgebung bzw. die umgeben­ de Atmosphäre, im Falle der Emission inner­ halb der Prüfkammer, an die Atmosphäre in­ nerhalb der Prüfkammer.Emission is the submission of Fabrics to the environment or the surrounding de atmosphere, in case of emission inside half of the test chamber, to the atmosphere in inside the test chamber.

Bekannt ist der Einsatz von Prüfkammern mit konstantem Volumen, bei denen mit relativ viel Aufwand die Prüfkammeratmosphäre und die Strömungs- und Austauschverhaltnisse in der Kammer kontrolliert werden müssen. Das hauptsächliche Problem ist hierbei, daß ent­ weder die Prüfkammer bei der Entnahme von Atmosphäre zum Druckausgleich mit definiert zugeführter Luft gefüllt werden muß und die Vermischung alter und neuer Systematmos­ phäre meßtechnisch kontrolliert werden muß, oder die Emission in "strömender" Atmosphä­ re stattfindet.The use of test chambers is also known constant volume, where with relative much effort the test chamber atmosphere and the flow and exchange relationships in  the chamber must be checked. The the main problem here is that ent neither the test chamber when removing Atmosphere for pressure equalization also defined supplied air must be filled and the Mixing old and new system atmosphere the sphere must be checked by measuring technology, or the emission in a "flowing" atmosphere re takes place.

Dieses Problem wird erfinderisch dadurch ge­ löst, daß bei der Prüfkammer mit variablem Volumen kein Systemaustausch stattfinden muß.This problem is inventively ge solves that in the test chamber with variable Volume no system exchange take place got to.

Die Prüfkammer besteht aus einem Behälter aus inertem Werkstoff. Der Werkstoff darf keine eigenen Emissionen abgeben und darf nicht durch die zu prüfenden Stoffe kontami­ niert werden.The test chamber consists of a container made of inert material. The material may do not emit their own emissions not contaminated by the substances to be tested be kidneyed.

Die Prüfkammer besitzt eine Öffnung durch die der Prüfkörper in die Kammer gelegt wer­ den kann und die luftdicht geschlossen wer­ den kann.The test chamber has an opening through it which the test specimen is placed in the chamber who can and who can be closed airtight that can.

Die Prüfkammer ist mit mindestens einem An­ schluß versehen, über den die Prüfkammer evakuiert, mit definierter Atmosphäre gefüllt und die Atmosphäre zur Analyse entnommen werden kann. Auf der beiliegenden Skizze ist eine Prüfkammer mit zwei Anschlüssen dar­ gestellt. Zwei Anschlüsse oder mehr erleich­ tern die Arbeit mit der Prüfkammer, da keine Anschlüsse umgesteckt werden müssen.The test chamber has at least one type provided over the test chamber evacuated, filled with a defined atmosphere and taken the atmosphere for analysis can be. On the attached sketch is is a test chamber with two connections posed. Ease two ports or more tern work with the test chamber, since none Connections must be changed.

Die Veränderung des Volumens kann durch zwei Lösungen realisiert werden:The change in volume can be caused by two solutions can be realized:

  • a) durch eine in einer Richtung bewegliche fe­ ste Trennwand, die luftdicht abgedichtet ist, odera) by a one-way movable fe most partition that is sealed airtight, or
  • b) durch eine flexible Trennwand, die an den Rändern fest und dicht mit der Kammer ver­ bunden ist, hierzu eignet sich jedes flexible reißfeste Material, welches keine eigenen Emissionen abgibt und nicht durch die zu prü­ fenden Emissionen kontaminiert wird, z. B. reißfeste Folie aus Kunststoff oder aus be­ schichtetem Kunststoff oder aus Metallfolie mit Kunststoffauflage, etc.b) by a flexible partition that connects to the Ver edges firmly and tightly with the chamber any flexible is suitable for this tear-resistant material that does not have its own Emits emissions and not through the test emissions are contaminated, e.g. B. tear-resistant plastic or be layered plastic or metal foil with plastic pad, etc.

Im folgenden ist ein Ausführungsbeispiel nä­ her beschrieben.In the following an embodiment is nä described here.

Fig. 1 zeigt die Anordnung der Prüfkammer 1 im Schnitt mit eingelegtem Prüfkörper 2 und flexibler Systemtrennwand 3. Zum Einlegen des Prüfkörpers 2 wird der Deckel 4 abgenommen. Fig. 1 shows the arrangement of the test chamber 1 in section with an inserted test specimens 2 and flexible system partition 3. To insert the test specimen 2 , the cover 4 is removed.

Fig. 2 zeigt die Prüfkammer kurz vor dem vollständigen Evakuieren mit einer Pumpe 5 über den Anschluß 6. Die flexible Trennwand 3 liegt in diesem Stadium bereits fast kom­ plett an der Prüfkammerwand an. Nach dem vollständigen Evakuieren liegt die flexible Trennwand komplett an den Wänden der Prüfkammer an. Das Volumen der Prüfkam­ mer ist dann Vmin = 0. Fig. 2 shows the test chamber shortly before the complete evacuation with a pump 5 via the connection 6. The flexible partition 3 is almost completely at this stage on the test chamber wall. After complete evacuation, the flexible partition is completely against the walls of the test chamber. The volume of the test chamber is then V min = 0.

Fig. 3 zeigt die Prüfkammer nach dem Füllen der Kammer mit definiertem Gas (z. B. Schutzgas oder reine Luft oder technisches Gas oder definiertes Gemisch verschiedener Gase) über den Anschluß 7. Das Volumen der Kammer ist reproduzierbar einstellbar und be­ trägt am Ende des Füllvorganges V₁ = Vmax. Fig. 3 shows the test chamber after filling said chamber with a defined gas (eg. B. protective gas or clean air or gas or technical defined mixture of different gases) over the terminal 7. The volume of the chamber is reproducibly adjustable and carries V₁ = V max at the end of the filling process.

Fig. 4 zeigt die Prüfkammer bei der Entnah­ me von Prüfkammeratmosphäre zur Analyse. Das Volumen beträgt nach der Entnahme von Atmosphäre zur Analyse V₂ = V₁ - VPrüf. Fig. 4 shows the test chamber in the removal of test chamber atmosphere for analysis. The volume after the removal of atmosphere for analysis V₂ = V₁ - V test .

Claims (1)

Prüf- bzw. Emissionskammer mit variablem Prüfkammervolumen zur Erfassung und Ana­ lyse von Emissionen aus Prüfkörpern da­ durch gekennzeichnet, daß
  • a. der Prüfkörper über einem bestimmten Zeitraum unter definierten Bedingungen Stof­ fe in die definierte Atmosphäre eines ge­ schlossenen Systems, d. h. der Atmosphäre der Prüf- und Emissionskammer abgeben kann.
  • b. nach Ablauf der Emissionszeit ein Teil des Volumens der Prüfkammeratmosphäre defi­ niert zur Analyse entnommen werden kann, ohne daß sich die Systemparameter der Prüf­ kammer mit Ausnahme des Prüfkammervolu­ mens ändern, und zu keinem Zeitpunkt ein ungewollter Kontakt und Stoffaustausch des Systems Prüfkammeratmosphäre mit der Um­ gebung oder anderen Systemen stattfinden kann.
Test or emission chamber with variable test chamber volume for the detection and analysis of emissions from test specimens characterized in that
  • a. the test specimen can release substances into the defined atmosphere of a closed system, ie the atmosphere of the test and emission chamber, under defined conditions over a certain period of time.
  • b. after the emission time has elapsed, part of the volume of the test chamber atmosphere can be removed for analysis without the system parameters of the test chamber changing with the exception of the test chamber volume, and at no time an unwanted contact and mass exchange of the system test chamber atmosphere with the environment or other systems can take place.
DE1995103644 1995-02-06 1995-02-06 Emission test chamber Withdrawn DE19503644A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1995103644 DE19503644A1 (en) 1995-02-06 1995-02-06 Emission test chamber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1995103644 DE19503644A1 (en) 1995-02-06 1995-02-06 Emission test chamber

Publications (1)

Publication Number Publication Date
DE19503644A1 true DE19503644A1 (en) 1996-08-14

Family

ID=7753166

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1995103644 Withdrawn DE19503644A1 (en) 1995-02-06 1995-02-06 Emission test chamber

Country Status (1)

Country Link
DE (1) DE19503644A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19708623A1 (en) * 1997-03-03 1998-09-10 Andreas Borgschulte Air distribution apparatus for use in testing of vapour emission from materials
US6051207A (en) * 1996-10-28 2000-04-18 Nycomed Imaging As Contrast agents
US6979574B1 (en) 1999-08-06 2005-12-27 Institut Fuer Diagnostik Forshung Gmbh Process for detecting binding reactions with use of the measurement of the relaxation of the double refraction of magnetic particles

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2786740A (en) * 1954-07-09 1957-03-26 Air Reduction Special atmosphere device
DE7829458U1 (en) * 1979-05-17 Schwarzmaier, Guntram, Dr., 8021 Taufkirchen Device for taking water samples from a predetermined depth
DE3904143A1 (en) * 1989-02-11 1990-08-16 Konrad Frauenknecht Fa Device for squeezing out a toothpaste tube
DE3919042A1 (en) * 1989-06-10 1990-12-13 Bodenseewerk Perkin Elmer Co METHOD AND DEVICE FOR ANALYZING SOLID SUBSTANCES ON MERCURY

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7829458U1 (en) * 1979-05-17 Schwarzmaier, Guntram, Dr., 8021 Taufkirchen Device for taking water samples from a predetermined depth
US2786740A (en) * 1954-07-09 1957-03-26 Air Reduction Special atmosphere device
DE3904143A1 (en) * 1989-02-11 1990-08-16 Konrad Frauenknecht Fa Device for squeezing out a toothpaste tube
DE3919042A1 (en) * 1989-06-10 1990-12-13 Bodenseewerk Perkin Elmer Co METHOD AND DEVICE FOR ANALYZING SOLID SUBSTANCES ON MERCURY

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6051207A (en) * 1996-10-28 2000-04-18 Nycomed Imaging As Contrast agents
DE19708623A1 (en) * 1997-03-03 1998-09-10 Andreas Borgschulte Air distribution apparatus for use in testing of vapour emission from materials
US6979574B1 (en) 1999-08-06 2005-12-27 Institut Fuer Diagnostik Forshung Gmbh Process for detecting binding reactions with use of the measurement of the relaxation of the double refraction of magnetic particles

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Legal Events

Date Code Title Description
8101 Request for examination as to novelty
8105 Search report available
8139 Disposal/non-payment of the annual fee