EP0172923B2 - Breathing apparatus as oxygen self rescue device - Google Patents

Breathing apparatus as oxygen self rescue device Download PDF

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Publication number
EP0172923B2
EP0172923B2 EP84109927A EP84109927A EP0172923B2 EP 0172923 B2 EP0172923 B2 EP 0172923B2 EP 84109927 A EP84109927 A EP 84109927A EP 84109927 A EP84109927 A EP 84109927A EP 0172923 B2 EP0172923 B2 EP 0172923B2
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EP
European Patent Office
Prior art keywords
chemical cartridge
protection device
covering
respiratory protection
chemical
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EP84109927A
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German (de)
French (fr)
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EP0172923B1 (en
EP0172923A1 (en
Inventor
Klaus-Dieter Dahrendorf
Klaus Haertle
Volker Hünnebeck
Werner Dr. Mascher
Udo Mushold
Klaus Pampuch
Ulrich Timm
Bernd Woicke
Stefan Dr. Zloczysti
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Auergesellschaft GmbH
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Auergesellschaft GmbH
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Application filed by Auergesellschaft GmbH filed Critical Auergesellschaft GmbH
Publication of EP0172923A1 publication Critical patent/EP0172923A1/en
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B7/00—Respiratory apparatus
    • A62B7/08—Respiratory apparatus containing chemicals producing oxygen

Definitions

  • the invention relates to a respirator as an escape device with pendulum breathing according to the preamble of claim 1.
  • Respirators of the type mentioned are housed in airtight lockable standby containers that are used for example in mine operations, carried by the miner at all times and worn on the body. The device is removed from the standby container for use. It is obvious that such a respirator must be light and small for constant carrying in terms of weight and dimensions.
  • the breathing bag is arranged above the chemical cartridge, the chemical cartridge in the lower housing part and the breathing bag with the breathing tube and mouthpiece in the housing cover (SU-A-248 504).
  • a breathing apparatus is also known in which a tubular breathing bag is drawn over the surface of the chemical cartridge and attached to it by means of two metal strip clips (US-A-2 492 272).
  • the volume of the breathing bag that is effectively available for collecting breathable air extends as an elongated bag shape below the chemical cartridge.
  • a breathing apparatus in which an oxygen-developing chemical cartridge is connected directly to a half mask, which in turn is arranged inside a breathing bag and is completely enveloped by it (DE 2 504 881-AI).
  • a breathing apparatus in which a breathing bag is arranged below the chemical cartridge and on the side of the cartridge opposite the breathing tube connection (DE 1 132 802-AS).
  • the chemical cartridge is surrounded at a distance from the cartridge casing with curved sheets, on the outside of which a casing made of a heat-insulating fabric is arranged. This serves as protection against accidental contact, in which the heat is dissipated by the chimney effect.
  • the invention has for its object to provide a particularly space-saving and compact design for an oxygen self-rescuer as an escape device and to save space so that the device can be accommodated in a standby container to be worn on the belt of the device wearer. Furthermore, the heat load due to the exothermic direction of the oxygen-evolving chemical for the breathing bag enveloping the chemical cartridge is said to be low in the operating state.
  • the advantages achieved by the invention are, in particular, that the size of the breathing apparatus is reduced and the device can thereby be accommodated in a small spare container to be worn on the belt.
  • the surface and temperature of the breathing apparatus is advantageously reduced by the complete and double wrapping of the chemical cartridge, namely by the cover and by the breathing bag.
  • the invention has surprisingly shown that it is possible to arrange the chemical cartridge inside the breathing bag, although it was to be expected that the heat emitted by the chemical cartridge during operation would be an unbearable burden for the breathing bag and for the breathing air in the breathing bag. It was to be assumed that, as before, because of the known heat load for the breathing bag, it must be arranged separately from the chemical cartridge as the heat source.
  • a breathing apparatus according to the invention is shown with pendulum breathing.
  • the breathing apparatus consists of an oxygen-evolving chemical cartridge 1, which is closely enclosed by a heat-insulating and shock-absorbing coating 2, a breathing tube 3 with a mouthpiece 4, a breathing bag 5 connected to the chemical cartridge 1 and a carrying strap 6.
  • the breathing apparatus is in a standby container 7 after Fig. 4 housed.
  • a heat exchanger 12 is arranged above the inlet opening D of the chemical cartridge 1 and is designed such that there is no thermal contact between the heat exchanger 12 and the chemical cartridge 1 can kick.
  • the heat exchanger 12 is surrounded by a heat-insulating housing socket 17 which rests captively on the top of the chemical cartridge 1.
  • An opening 5b is provided on the upper end face 5a of the breathing bag 5, through which the chemical cartridge 1 is inserted into the breathing bag.
  • the opening 5b is bordered by a web 5c, to which the chemical cartridge 1 with the cover 2 and the ends of the carrying strap 6 are fastened by means of a collar 22.
  • a pressure relief valve 8 is arranged on the upper end face 5a of the breathing bag 5.
  • the coating 2 shows a cross section through the chemical cartridge 1 with a coating 2.
  • the coating 2 has ribs 2a, which lie at a distance from one another on the chemical cartridge outer surface A in the vertical or longitudinal axis.
  • the lower end face of the chemical cartridge 1 is partially covered by the coating 2, so that the outlet opening B of the chemical cartridge is freely accessible to flow through the exhalation and inhalation air (Fig. 1).
  • the upper end face of the cartridge 1 is completely covered by the cover 2, which preferably forms a unit with the breathing tube 3.
  • the coating 2 consists of a heat-insulating material, for example silicone elastomers. This coating 2 contributes to the fact that in the operating state the heat load due to the exothermic reaction of the oxygen-developing chemical is low for the breathing bag 5 enveloping the chemical cartridge 1.
  • the formation of the coating 2 with the ribs 2a resting on the chemical cartridge outer surface A creates spaces C (see FIG. 2) all around between the outer wall A of the cartridge and the coating 2, which serve as thermal insulation and the surface temperature of the cartridge 1 reduce.
  • the formation of the cover 2 with the ribs 2a also has other advantages: the covering of the cover 2 over the chemical cartridge 1 during assembly is facilitated. Weight reduction for the cover 2, so that the weight for the device to be worn on the belt becomes smaller. The rigidity of the coating 2 is increased. Overall, the cover 2 also serves as shock protection for the breathing apparatus which is accommodated in the standby container 7.
  • the air outlet surface E is advantageously loosely surrounded by cotton wool 9 holding the dust.
  • the air outlet opening B of the cartridge 1 is covered by a sieve 10 protruding into the opening at an acute angle, the molten chemical into a collecting trough formed in the chemical cartridge 1 at the bottom 11 can drain without clogging the flow path.
  • FIG. 3 shows the breathing apparatus in the standby container 7.
  • the lower part of the standby container and 14 its lid are designated by 14. Both parts are pressed airtight against each other by known closure members (not shown).
  • the standby container 7 is provided with an eyelet part 16 in order to be hung on the waist belt of the device wearer.
  • the breathing apparatus must be stored in a shockproof manner in the standby container 7. This is advantageously done by beads 2c formed all around on the cover 2 at the top and bottom.

Description

Die Erfindung betrifft ein Atemschutzgerät als Fluchtgerät mit Pendelatmung nach dem Oberbegriff des Patentanspruchs 1. Atemschutzgeräte der eingangs genannten Art, sind in luftdicht verschließbaren Bereitschaftsbehältern untergebracht, die beispielsweise im Grubenbetrieb verwendet, vom Bergmann ständig mitgeführt und am Körper getragen werden. Zum Gebrauch wird das Gerät aus dem Bereitschaftsbehälter herausgenommen. Es liegt auf der Hand, daß ein derartiges Atemschutzgerät für ein ständiges Mitführen hinsichtlich Gewicht und Abmessungen leicht und klein sein muß. Bei einem bekannten Atemschutzgerät der gattungsgemäßen Art, ist der Atembeutel oberhalb der Chemikalpatrone angeordnet, wobei die Chemikalpatrone im Gehäuseunterteil und der Atembeutel mit dem Atemschlauch und Mundstück im Gehäusedeckel untergebracht sind (SU-A-248 504). Dadurch ist ein verhältnismäßig hochbauender Gehäusedeckel erforderlich, der damit die Gesamtgröße des Bereitschaftsbehälters wesentlich mitbestimmt, so daß das Atemschutzgerät. mit dem Bereitschaftsbehälter mittels eines Schultergurtes am Körper getragen werden muß. Bei den extrem rauhen Bedingungen im Grubenbetrieb, ist diese Gerättrageweise für den das Gerät ständig mitführenden Bergmann beschwerlich. Es ist auch ein Atemschutzgerät bekannt, bei dem ein schlauchförmig ausgebildeter Atembeutel über die Chemikalpatronen-Mantelfläche gezogen und an dieser mittels zweier metallstreifenförmiger Schellen befestigt ist (US-A-2 492 272). Das zum Ansammeln von atembarer Luft wirksam zur Verfügung stehende Volumen des Atembeutels erstreckt sich bei dieser Ausführung als langgestreckte Beutelform unterhalb der Chemikalpatrone. Weiterhin ist ein Atemschutzgerät bekannt, bei dem an einer Halbmaske unmittelbar eine Sauerstoff entwickelnde Chemikalpatrone angeschlossen ist, die wiederum im Innern eines Atembeutels angeordnet ist, und von diesem vollständig umhüllt wird (DE 2 504 881-AI). Schließlich ist ein Atemschutzgerät bekannt, bei dem unterhalb der Chemikalpatrone und an der dem Atemschlauchanschluß entgegengesetzten Seite der Patrone ein Atembeutel angeordnet ist (DE 1 132 802-AS). Die Chemikalpatrone ist hierbei in einem Abstand vom Patronenmantel mit gekrümmten Blechen umgeben, auf deren Außenseite ein Mantel aus einem wärmedämmenden Gewebe angeordnet ist. Dies dient als Berührungsschutz, in dem die Wärme durch Schornsteinwirkung abgeführt wird.The invention relates to a respirator as an escape device with pendulum breathing according to the preamble of claim 1. Respirators of the type mentioned are housed in airtight lockable standby containers that are used for example in mine operations, carried by the miner at all times and worn on the body. The device is removed from the standby container for use. It is obvious that such a respirator must be light and small for constant carrying in terms of weight and dimensions. In a known respiratory protection device of the generic type, the breathing bag is arranged above the chemical cartridge, the chemical cartridge in the lower housing part and the breathing bag with the breathing tube and mouthpiece in the housing cover (SU-A-248 504). As a result, a relatively high-profile housing cover is required, which thus substantially determines the overall size of the standby container, so that the breathing apparatus. must be carried on the body with the standby container using a shoulder strap. In the extremely harsh conditions in mine operations, this device carrying method is difficult for the miner who is always carrying the device. A breathing apparatus is also known in which a tubular breathing bag is drawn over the surface of the chemical cartridge and attached to it by means of two metal strip clips (US-A-2 492 272). In this embodiment, the volume of the breathing bag that is effectively available for collecting breathable air extends as an elongated bag shape below the chemical cartridge. Furthermore, a breathing apparatus is known in which an oxygen-developing chemical cartridge is connected directly to a half mask, which in turn is arranged inside a breathing bag and is completely enveloped by it (DE 2 504 881-AI). Finally, a breathing apparatus is known in which a breathing bag is arranged below the chemical cartridge and on the side of the cartridge opposite the breathing tube connection (DE 1 132 802-AS). The chemical cartridge is surrounded at a distance from the cartridge casing with curved sheets, on the outside of which a casing made of a heat-insulating fabric is arranged. This serves as protection against accidental contact, in which the heat is dissipated by the chimney effect.

Der Erfindung liegt die Aufgabe zugrunde, eine besonders raumsparende und kompakte Gestaltung für einen Sauerstoffselbstretter als Fluchtgerät zu schaffen und so platzsparend auszubilden, daß das Gerät in einem am Gürtel des Gerätträgers zu tragenden Bereitschaftsbehälter untergebracht werden kann. Ferner soll im Betriebszustand die Wärmebelastung infolge der exothermen Rektion des Sauerstoff enwickelnden Chemikals für den die Chemikalpatrone umhüllenden Atembeutel gering sein.The invention has for its object to provide a particularly space-saving and compact design for an oxygen self-rescuer as an escape device and to save space so that the device can be accommodated in a standby container to be worn on the belt of the device wearer. Furthermore, the heat load due to the exothermic direction of the oxygen-evolving chemical for the breathing bag enveloping the chemical cartridge is said to be low in the operating state.

Diese Aufgabe wird gemäß der Erfindung bei einem Atemschutzgerät der eingangs genannten Art durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.This object is achieved according to the invention in a breathing apparatus of the type mentioned by the characterizing features of claim 1.

Die mit der Erfindung erzielten Vorteile bestehen insbesondere darin, daß die baugröße des Atemschutzgerätes verringert wird und dadurch das Gerät in einem am Gürtel zu tragenden kleinen bereitschaffsbehälter untergebracht werden kann. Darüber hinaus wird durch die vollständige und doppelte Umhüllung der Chemikalpatrone, nämlich durch den Überzug und durch den Atembeutel, die Oberflächentemperatur des 60 Atemschutzgeräges vorteilhaft vermindert.The advantages achieved by the invention are, in particular, that the size of the breathing apparatus is reduced and the device can thereby be accommodated in a small spare container to be worn on the belt. In addition, the surface and temperature of the breathing apparatus is advantageously reduced by the complete and double wrapping of the chemical cartridge, namely by the cover and by the breathing bag.

Die Erfindung hat in überraschender Weise gezeigt, daß es möglich ist, die Chemikalpatrone im Innern des Atembeutels anzuordnen, obwohl zu erwarten war, daß die von der Chemikalpatrone im betrieb abgegebene Wärme für den Atembeutel und für die im Atembeutel befindliche Einatemluft eine unerträgliche belastung darstellt. Es war davon auszugehen, daß, wie bisher, wegen der bekannten Wärmebelastung für den Atembeutel, dieser von der Chemikalpatrone als Wärmequelle unbedingt getrennt anzuordnen ist.The invention has surprisingly shown that it is possible to arrange the chemical cartridge inside the breathing bag, although it was to be expected that the heat emitted by the chemical cartridge during operation would be an unbearable burden for the breathing bag and for the breathing air in the breathing bag. It was to be assumed that, as before, because of the known heat load for the breathing bag, it must be arranged separately from the chemical cartridge as the heat source.

Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.Further advantageous embodiments of the invention result from the subclaims.

Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden im folgenden näher beschrieben. Es zeigen:

  • Fig. 1 eine schematische Darstellung des erfindungsgemäßen Atemschutzgerätes mit Pendelatmung,
  • Fig. 2 eine Schnittdarstellung nach Linie I-I, gemäß Fig. 1,
  • Fig. 3 eine schematische Darstellung des in einem bereitschaftsbehälter untergebrachten erfindungsgemäßen Atemschutzgeräts,
  • Fig. 4 eine vergrößerte Detaildarstellung x nach Fig. 3.
Embodiments of the invention are shown in the drawing and are described in more detail below. Show it:
  • 1 is a schematic representation of the breathing apparatus according to the invention with pendulum breathing,
  • 2 is a sectional view along line II, according to FIG. 1,
  • 3 shows a schematic illustration of the breathing apparatus according to the invention, which is accommodated in a standby container,
  • FIG. 4 shows an enlarged detailed illustration x according to FIG. 3.

In Fig. 1 ist ein erfindungsgemäßes Atemschutzgerät mit Pendelatmung dargestellt. Das Atemschutzgerät besteht aus einer sauerstoffentwickelnden Chemikalpatrone 1, die von einem wärmedämmenden und stoßdämpfenden Überzug 2 eng umschlossen ist, einem Atemschlauch 3 mit einem Mundstück 4, einem an die Chemikalpatrone 1 angeschlossenen Atembeutel 5 und einer Tragebänderung 6. Das Atemschutzgerät ist in einem bereitschaftsbehälter 7 nach Fig. 4 untergebracht.In Fig. 1, a breathing apparatus according to the invention is shown with pendulum breathing. The breathing apparatus consists of an oxygen-evolving chemical cartridge 1, which is closely enclosed by a heat-insulating and shock-absorbing coating 2, a breathing tube 3 with a mouthpiece 4, a breathing bag 5 connected to the chemical cartridge 1 and a carrying strap 6. The breathing apparatus is in a standby container 7 after Fig. 4 housed.

Oberhalb der Eintrittsöffnung D der Chemikalpatrone 1 ist ein Wärmeaustauscher 12 angeordnet und so ausgebildet, daß zwischen dem Wärmeaustauscher 12 und der Chemikalpatrone 1 kein Wärmekontakt auftreten kann. Der Wärmeaustauscher 12 ist von einer wärmedämmenden Gehäuse-Fassung 17 umgeben, die auf der Oberseite der Chemikalpatrone 1 unverlierbar aufliegt. An der oberen Stirnseite 5a des Atembeutels 5 ist eine Öffnung 5b vorgesehen, durch die die Chemikalpatrone 1 in den Atembeutel gesteckt wird. Die Öffnung 5b ist von einem Steg 5c eingefaßt, an dem die Chemikalpatrone 1 mit dem Überzug 2 und die Enden der Tragebänderung 6 mittels einer Verschellung 22 befestigt werden. Ein Überdruckventil 8 ist an der oberen Stirnseite 5a des Atembeutels 5 angeordnet.A heat exchanger 12 is arranged above the inlet opening D of the chemical cartridge 1 and is designed such that there is no thermal contact between the heat exchanger 12 and the chemical cartridge 1 can kick. The heat exchanger 12 is surrounded by a heat-insulating housing socket 17 which rests captively on the top of the chemical cartridge 1. An opening 5b is provided on the upper end face 5a of the breathing bag 5, through which the chemical cartridge 1 is inserted into the breathing bag. The opening 5b is bordered by a web 5c, to which the chemical cartridge 1 with the cover 2 and the ends of the carrying strap 6 are fastened by means of a collar 22. A pressure relief valve 8 is arranged on the upper end face 5a of the breathing bag 5.

In Fig. 2 ist ein Querschnitt durch die Chemikalpatrone 1 mit Überzug 2 dargestellt. Der Überzug 2 weist Rippen 2a auf, die in einem Abstand zueinander an der Chemikalpatronen-Mantelfläche A in der Hoch- bzw. Längsachse fest anliegen.2 shows a cross section through the chemical cartridge 1 with a coating 2. The coating 2 has ribs 2a, which lie at a distance from one another on the chemical cartridge outer surface A in the vertical or longitudinal axis.

Die untere Stirnfläche der Chemikalpatrone 1 wird vom Überzug 2 teilweise umfaßt, so daß die Austrittsöffnung B der Chemikalpatrone zum Durchströmen der Aus- und Einatemluff frei zugänglich ist (Fig. 1). Die obere Stirnfläche der Patrone 1 wird von dem Überzug 2 vollständig überdeckt, der mit dem Atemschlauch 3 vorzugsweise eine Einheit bildet.The lower end face of the chemical cartridge 1 is partially covered by the coating 2, so that the outlet opening B of the chemical cartridge is freely accessible to flow through the exhalation and inhalation air (Fig. 1). The upper end face of the cartridge 1 is completely covered by the cover 2, which preferably forms a unit with the breathing tube 3.

Der Überzug 2 besteht aus einem wärmeisolierenden Material, beispielsweise aus Silikon-Elastomere. Dieser Überzug 2 trägt mit dazu bei, daß im Betriebszustand die Wärmebelastung infolge der exothermen Reaktion des sauertoffentwickelnden Chemikals für den die Chemikalpatrone 1 umhüllenden Atembeutel 5 gering ist. Durch die Ausbildung des Überzugs 2 mit den an der Chemikalpatronen-Mantelfläche A anliegenden Rippen 2a, entstehen zwischen der Patronen-Außenwand A und dem Überzug 2 ringsum Zwischenräume C (vgl. Fig. 2), die als Wärmeisolation dienen und die Oberflächentemperatur der Patrone 1 senken. Die Ausbildung des Überzugs 2 mit den Rippen 2a bringt darüber hinaus auch noch weitere Vorteile mit sich: Das Überziehen des Überzugs 2 über die Chemikalpatrone 1 bei der Montage wird erleichtert. Gewichtsreduzierung für den Überzug 2, so daß das Gewicht für das am Gürtel zu tragende Gerät kleiner wird. Die Steifigkeit des Überzugs 2 wird erhöht. Insgesamt dient der Überzug 2 auch als Stoßschutz für das im Bereitschaftsbehälter 7 untergebrachte Atemschutzgerät.The coating 2 consists of a heat-insulating material, for example silicone elastomers. This coating 2 contributes to the fact that in the operating state the heat load due to the exothermic reaction of the oxygen-developing chemical is low for the breathing bag 5 enveloping the chemical cartridge 1. The formation of the coating 2 with the ribs 2a resting on the chemical cartridge outer surface A creates spaces C (see FIG. 2) all around between the outer wall A of the cartridge and the coating 2, which serve as thermal insulation and the surface temperature of the cartridge 1 reduce. The formation of the cover 2 with the ribs 2a also has other advantages: the covering of the cover 2 over the chemical cartridge 1 during assembly is facilitated. Weight reduction for the cover 2, so that the weight for the device to be worn on the belt becomes smaller. The rigidity of the coating 2 is increased. Overall, the cover 2 also serves as shock protection for the breathing apparatus which is accommodated in the standby container 7.

Um eine optimale Ausnutzung des sauerstofferzeugenden Chemikals und damit eine größere Benutzungszeit des Atemschutzgerätes für den Gerätträger zu erzielen, muß eine über das gesamte Volumen des Chemikals gleichmäßige Durchströmung angestrebt werden. Dies wird durch eine möglichst große Anströmfläche erreicht, in dem die Ausatemluft des Gerätträgers durch den Atemsch'auch 3 in die Chemikalpatrone 1 durch das Chemikal im oberen Bereich axial nach unten und im seitlichen Bereich radial von außen nach innen strömt. Hierbei ragt die Luftaustrittsfläche E domartig in die Chemikalpatrone 1 hinein. Die Durchströmung der Patrone wird durch die Pfeile angegeben.In order to achieve optimal use of the oxygen-producing chemical and thus a longer period of use of the respirator for the device wearer, a uniform flow must be sought over the entire volume of the chemical. This is achieved by the largest possible inflow area in which the exhaled air of the device carrier flows through the breathing tube 3 into the chemical cartridge 1 through the chemical in the upper region axially downward and in the lateral region radially from the outside inwards. Here, the air outlet surface E projects into the chemical cartridge 1 like a dome. The flow through the cartridge is indicated by the arrows.

Um zu verhindern, daß Chemikalstaub aus der Patrone 1 in den Atembeutel 5 gelangt, wird die Luftaustrittsfläche E vorteilhaft v-on einer den Staub haltenden Watte 9 lose umgeben. Um zu verhindern, daß geschmolzenes Chemikal evtl. aus der Patrone 1 in den Atembeutel 5 hineinlaufen kann, ist die Luftaustrittsöffnung B der Patrone 1 von einem spitzwinklig in die Öffnung hineinragenden Sieb 10 abgedeckt, das geschmolzenes Chemikal in eine in der Chemikalpatrone 1 unten ausgebildete Auffangwanne 11 ableiten kann, ohne den Strömungsweg zu verstopfen.In order to prevent chemical dust from the cartridge 1 from getting into the breathing bag 5, the air outlet surface E is advantageously loosely surrounded by cotton wool 9 holding the dust. In order to prevent molten chemical from possibly running out of the cartridge 1 into the breathing bag 5, the air outlet opening B of the cartridge 1 is covered by a sieve 10 protruding into the opening at an acute angle, the molten chemical into a collecting trough formed in the chemical cartridge 1 at the bottom 11 can drain without clogging the flow path.

Fig. 3 zeigt das Atemschutzgerät im Bereitschaftsbehälter 7. Mit 14 ist der Unterteil des Bereitschaftsbehälters und mit 15 sein Deckel bezeichnet. Beide Teile werden durch an sich bekannte Verschlußglieder (nicht dargestellt) luftdicht gegeneinandergedrückt. Der Bereitschaftsbehälter 7 ist mit einem Ösenteil 16 versehen, um am Leibgurt des Gerätträgers eingehängt zu werden. Das Atemschutzgerät muß im Bereitschaftsbehälter 7 stoßsicher gelagert sein. Dies erfolgt vorteilhaft durch am Überzug 2 oben und unten ringsum angeformte Wülste 2c.3 shows the breathing apparatus in the standby container 7. The lower part of the standby container and 14 its lid are designated by 14. Both parts are pressed airtight against each other by known closure members (not shown). The standby container 7 is provided with an eyelet part 16 in order to be hung on the waist belt of the device wearer. The breathing apparatus must be stored in a shockproof manner in the standby container 7. This is advantageously done by beads 2c formed all around on the cover 2 at the top and bottom.

Fig. 4 zeigt eine vergrößerte Darstellung der als Stoßschutz dienenden Wülste 2c zwischen der Chemikalpatrone 1 und der Wandung des Unterteils 14 des Bereitschaftsbehälters 7.4 shows an enlarged illustration of the beads 2c serving as impact protection between the chemical cartridge 1 and the wall of the lower part 14 of the standby container 7.

Claims (15)

1. Respiratory protection device as automatic rescue oxygen device, in particular as an escape apparatus for reciprocating respiration, comprising a chemical cartridge (1) generating oxygen, a respirator bag (5) connected to the chemical cartridge (1), in the interior of which the chemical cartridge is arranged and is completely encased thereby, in which the chemical cartridge (1) is secured with its inlet opening (D) on the top end face of the respirator bag, and comprising a respirator hose (3) with a mouthpiece (4), as well as an ever-ready holder (7) receiving these parts, characterised in that
a) the chemical cartridge (1) is closely enwrapped by a thermally insulating covering (2) and that the covering (2) forms a unit with the respirator hose (3),
b) the covering (2) wholly covers the top end face of the chemical cartridge and partially enflanks the lower end face, so that the outlet opening (B) of the chemical cartridge is freely accessible,
c) the covering (2) has ribs which with mutual spacing bear firmly and encirclingly on the outer surface (A) of the chemical cartridge alongside the vertical or longitudinal axis, the ribs (2a) which bear encirclingly on the outer surface (A) of the chemical cartridge forming interstices (C) between the chemical cartridge
(1) and the covering (2).
2. Respiratory protection device according to Claim 1, characterised in that the covering (2) consists of a material of low thermal conductivity.
3. Respiratory protection device according to Claims 1 and 2, characterised in that the material of the covering (2) consists of a plastics material, in particular of silicone elastomers.
4. Respiratory protection device according to Claim 1, characterised in that an opening (5b) is provided in the upper end face (5a) of the respirator bag (5), through which the chemical cartridge (1) with the covering
(2) is inserted into the respirator bag (5).
5. Respiratory protection device according to Claims 1 and 4, characterised in that the opening (5b) is bordered by a web (5c) on which the chemical cartridge (1) with the covering (2) and the ends of a carrying strap system (6) are secured by means of a clamping device (22).
6. Respiratory protection device according to Claims 1 and 2, characterised in that the covering (2) has encirclingly extending beadings (2c) formed on it at the top and bottom, which form an impact protection (Figs. 1, 4 and 5) between the chemical cartridge (1) and the wall of the lower section (14) and of the lid (15) of the ever-ready holder (7).
7. Respiratory protection device according to Claims 1 and 4, characterised in that a relief pressure valve (8) is arranged on the upper end face (5a) of the respirator bag (5) (Fig. 1).
8. Respiratory protection device according to Claim 1, characterised in that a heat exchanger (12) is arranged in the thermally insulating covering (2) above the chemical cartridge (1) in such a way that it has no thermal contact with the chemical cartridge (Figs. 1 and 4).
9. Respiratory protection device according to Claims 1 and 8, characterised in that the heat exchanger (12), surrounded in an undetachable manner by a housing mounting (17), rests on the upper side of the chemical cartridge (1).
10. Respiratory protection device according to Claim 9, characterised in that the housing mounting (17) consists of the same material as the covering (2).
11. Respiratory protection device according to Claim 10, characterised in that the air outlet surface (E) is loosely surrounded by a layer of cotton wool (9) (Fig. 1).
12. Respiratory protection device according to Claims 1, 2 and 10, characterised in that the outlet opening (B) is covered by a screen (10) projecting at an acute angle into the opening, so that molten chemical is drain- able into a receiving trough (11) formed at the bottom in the chemical cartridge (1) (Figs. 1 and 4).
13. Respiratory protection device according to Claims 1 and 5, characterised in that the clamping device (22) is provided with a thermally insulating covering (23) (Fig. 1).
EP84109927A 1984-07-20 1984-08-21 Breathing apparatus as oxygen self rescue device Expired - Lifetime EP0172923B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3426757 1984-07-20
DE19843426757 DE3426757A1 (en) 1984-07-20 1984-07-20 BREATHING DEVICE AS AN OXYGEN SELF-RESCUE

Publications (3)

Publication Number Publication Date
EP0172923A1 EP0172923A1 (en) 1986-03-05
EP0172923B1 EP0172923B1 (en) 1989-04-05
EP0172923B2 true EP0172923B2 (en) 1992-07-01

Family

ID=6241126

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84109927A Expired - Lifetime EP0172923B2 (en) 1984-07-20 1984-08-21 Breathing apparatus as oxygen self rescue device

Country Status (5)

Country Link
EP (1) EP0172923B2 (en)
JP (1) JPS6137174A (en)
DE (1) DE3426757A1 (en)
SU (1) SU1419506A3 (en)
ZA (1) ZA848536B (en)

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DE3700458A1 (en) * 1987-01-09 1988-07-21 Draegerwerk Ag RESPIRATORY DEVICE WITH REGENERATION OF BREATHING AIR
WO1988005322A1 (en) * 1987-01-21 1988-07-28 Tatsuo Ina Portable oxygen generator
GB2206802B (en) * 1987-05-27 1991-05-08 Vnii Gornospasate Self-contained breathing apparatus with chemically bound oxygen
GB2258813A (en) * 1992-09-24 1993-02-24 Auergesellschaft Gmbh A chemical cartridge for a gas mask or the like
DE102005003176B3 (en) 2005-01-19 2006-07-20 Msa Auer Gmbh Oxygen generating breathing apparatus
DE102005006012B3 (en) * 2005-02-04 2006-07-20 Msa Auer Gmbh Oxygen generating respirator, has chemical cartridge with part completely enclosed by protective covering and with bottom area covered by protective cap, where covering and cap are made of shock absorbing and friction reducing material
US9393448B2 (en) 2011-11-17 2016-07-19 3M Innovative Properties Company Side plug-in filter cartridge
RU2610572C2 (en) * 2015-05-28 2017-02-13 Открытое акционерное общество "Корпорация "Росхимзащита" (ОАО "Корпорация "Росхимзащита") Self-contained breathing apparatus

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DE599077C (en) * 1934-06-25 Bernh Draeger Diving rescuer with mouthpiece and breathing bag
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Also Published As

Publication number Publication date
JPH0343908B2 (en) 1991-07-04
ZA848536B (en) 1986-05-28
JPS6137174A (en) 1986-02-22
EP0172923B1 (en) 1989-04-05
DE3426757A1 (en) 1986-01-30
EP0172923A1 (en) 1986-03-05
DE3426757C2 (en) 1991-07-25
SU1419506A3 (en) 1988-08-23

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