EP0027521B1 - Head protection hood - Google Patents

Head protection hood Download PDF

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Publication number
EP0027521B1
EP0027521B1 EP19800105040 EP80105040A EP0027521B1 EP 0027521 B1 EP0027521 B1 EP 0027521B1 EP 19800105040 EP19800105040 EP 19800105040 EP 80105040 A EP80105040 A EP 80105040A EP 0027521 B1 EP0027521 B1 EP 0027521B1
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EP
European Patent Office
Prior art keywords
head protection
air
protection hood
opening
fresh air
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.)
Expired
Application number
EP19800105040
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German (de)
French (fr)
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EP0027521A1 (en
Inventor
Géza Kecskeméthy
Tamás Borsos
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.)
Mueanyagipari Kutato Intezet
Muanyagipari Kutato Intezet
Original Assignee
Mueanyagipari Kutato Intezet
Muanyagipari Kutato Intezet
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Publication of EP0027521A1 publication Critical patent/EP0027521A1/en
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Publication of EP0027521B1 publication Critical patent/EP0027521B1/en
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/04—Gas helmets

Definitions

  • the invention relates to a head protection hood covering the entire head, which is provided with a viewing opening.
  • Fresh air breathing apparatus is used in those workplaces where the air space is contaminated to a degree that is hazardous to health.
  • the fresh air breathing apparatus or head protection hoods lead filtered and cleaned air from an external source to the mouth and nose opening of the working people.
  • an external source to the mouth and nose opening of the working people.
  • protective hoods that protect not only the respiratory system, but also the eyes. In many cases this is achieved by completely protecting the head, which is completely isolated from the surroundings.
  • Head protection caps are also known (DE-C-1 087 906), in which an air curtain is generated in front of the face of the user by means of nozzles on the cap screen and a separate breathing tube is provided, the mouthpiece of which is taken into the mouth while the nasal openings are closed with a nose clip. This is not pleasant for the user.
  • head protection hoods with an uncovered viewing opening covering the entire head of the user have also become known (FR-A-1 102 541 is blown out with air jets directed obliquely outwards in front of the center of the viewing opening These are blown in because the air curtain sweeping over the viewing opening creates a negative pressure in the area of the viewing opening, which makes breathing more difficult.
  • the invention has for its object to develop a combined breathing, eye and head protection hood, which protects the entire head area against external mechanical and contaminating effects, with an uncovered viewing opening by forming the strongest possible air curtain in front of the viewing opening effective protection for the eyes offers gaseous or fine-grained impurities of the outer air space and at the same time effortless breathing when out sufficient fresh air supply ensures.
  • the invention is based on the fact that, in the case of a head protection hood having an uncovered viewing opening, an air curtain can be formed from air flowing at high speed in such a way that, on the one hand, the influx of the outside contaminated air in the direction of the eyes or into the head protection hood is prevented and, on the other hand, through that in the Zone between the respiratory system and the air curtain, the breathing air conveyed into the hood in the desired direction, d. H. can be guided to the nose and mouth opening so that fresh air is always available in sufficient quantity in the interior of the head protection hood, in particular in front of the nose and mouth opening.
  • outlet opening connected to the fresh air supply line is arranged below the viewing opening in the area of the mouth and nose opening of the person wearing the hood and in that the openings serving to produce the air curtain above the viewing opening for the production of an approximately in the surface of the air curtain opening are arranged and formed.
  • the distribution chamber having the openings for generating the air curtain and the fresh air outlet opening can be connected to separate air connections.
  • the distribution chamber and the fresh air outlet opening are connected to a common air connection, a separate manual control valve controlling the air quantity being provided in the fresh air supply line.
  • the openings used to generate the air curtain can be designed as bores or gaps.
  • a particularly advantageous embodiment consists in designing the openings in the form of precision nozzles, which can be arranged individually adjustable in the form of ball valves on the upper edge of the viewing opening.
  • the air can be led to or into the head protection hood via a corresponding air preparation unit, a pressure regulator, the control valve (possibly several valves) controlling the air volume, flexible connecting lines and a quick connection.
  • the head protection hood 1 has a free, uncovered viewing opening 10.
  • a continuous air line 2 is arranged on the upper half of the protective hood 1, which ends in the area of the back of the head with its two ends in a connection 8 and in the area of the viewing opening 10 above the same in a distribution chamber having a larger cross section 3 passes.
  • Openings 4 are provided in the distribution chamber 3 and serve as outflow openings to form an air curtain.
  • the openings 4 are designed as nozzles. But they can also be designed as a vertically extending column.
  • an outlet opening 6 of a channel for the supply of fresh air is provided on the head protection hood 1 at the level of the nose and mouth opening, which ends with its two ends in a fresh air supply line 5 running around the head protection hood 1, which in turn has an air connection 9 in the area of the back of the head connected is.
  • a filter 7 can be inserted into the outlet opening 6 and can be covered with a perforated cover.
  • the embodiment of the head protection hood 1 shown in FIG. 2 differs from that in FIG. 1 in that the air line 2 opening into the distribution chamber 3 is connected together with the fresh air supply line 5 to a common air connection 8, 9.
  • FIGS. 1 and 2 Both of the embodiments shown in FIGS. 1 and 2 are expediently provided with a handle 17.
  • a shoulder protection means made of textile material can be connected to the head protection hood 1 from below.
  • the embodiment shown in FIG. 2 can be used, whereas if the supply air contains contaminants, it can only be used to generate the air curtain (see FIG. 1) and the fresh air supply line 5 with the outlet opening 6 a special fresh air supply line is connected.
  • connection 8 or 9 is connected via lines 18 to a control valve 13, which is approximately at the waist height. is attached to the back of the person wearing the head protection hood.
  • the control valve 13 is connected via an air-conveying pipe 12 to a pressure regulator 14, which in turn is connected to a filter 15.
  • FIG. 4 The part of the head protection hood 1 located above the viewing opening 10 is shown in FIG. 4 in section.
  • a receiving part 19 is arranged in an opening 20 in the wall of the distributor chamber 3, which is provided with a bore 21 which diffuses on its part 22 pointing towards the viewing opening 10 is expanded like a care.
  • a ball 16 is inserted into the bore 21 in such a way that its boundary facing the inspection opening 10 comes to lie where the bore 21 begins to expand towards the part 22 which is expanded like a diffuser.
  • the ball 16 is adjustably mounted in the bore 21 and has a passage 23 forming the openings 4 from FIG. 1 or 2 with a substantially smaller cross section than the bore 21. By adjusting the ball 16, the blow-out direction of the air flowing through the passage 23 can be adapted to the respective conditions.
  • a manually operable valve 24 can be provided in the fresh air line 5 in addition to the regulator valves 13 located at the waist, through which the fresh air throughput can be greased or adjusted.

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  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Helmets And Other Head Coverings (AREA)

Description

Die Erfindung betrifft eine den ganzen Kopf überdeckende Kopfschutzhaube, die mit einer Schauöffnung versehen ist.The invention relates to a head protection hood covering the entire head, which is provided with a viewing opening.

Um die Gesundheit der Werktätigen zu schützen, wurden verschiedene Kopf- und Gesichtsschutzhauben sowie Atmungsapparate entwickelt. An denjenigen Arbeitsplätzen, wo der Luftraum in einem für die Gesundheit gefährlichen Maß verunreinigt ist, werden Frischluft-Atemschutzgeräte eingesetzt.In order to protect the health of the working people, various head and face protection hoods and breathing apparatus have been developed. Fresh air breathing apparatus is used in those workplaces where the air space is contaminated to a degree that is hazardous to health.

Die Frischluft-Atemschutzgeräte bzw. Kopfschutzhauben führen filtrierte und gereinigte Luft von einer äußeren Quelle zur Mund- und Nasenöffnung der Werktätigen. In zahlreichen Industriezweigen besteht die Forderung, auch die Augen vor den im Luftraum vorhandenen gasförmigen oder körnigen Materialien zu schützen. Für diesen Zweck ist es üblich, solche Kopfschutzhauben zu verwenden, die nicht nur die Atmungsorgane, sondern auch die Augen schützen. In vielen Fällen wird dies durch den kompletten Schutz des Kopfes erreicht, der dabei von der Umgebung völlig abgekapselt ist.The fresh air breathing apparatus or head protection hoods lead filtered and cleaned air from an external source to the mouth and nose opening of the working people. In numerous branches of industry there is a requirement to also protect the eyes from the gaseous or granular materials present in the airspace. For this purpose, it is common to use protective hoods that protect not only the respiratory system, but also the eyes. In many cases this is achieved by completely protecting the head, which is completely isolated from the surroundings.

Eine wesentliche Bedingung derartiger geschlossener Kopfschutzhauben, die im Bereich der Augen ein aus beliebigem durchsichtigen . Kunststoff oder Glas gefertigtes Schutzfenster aufweisen, besteht darin, daß jederzeit für eine ausreichende Frischluftzufuhr in das Innere der Kopfschutzhaube gesorgt ist. Dies geschieht in der Regel derart, daß entweder die gesamte Kopfschutzhaube von Frischluft durchströmt oder die Frischluft direkt der Mund- oder Nasenöffnung der die Kopfschutzhaube tragenden Person zugeführt wird. Es ist auch bekannt (FR-A-2106 753), die Frischluft entlang der Innenfläche des Schutzfensters in die Kopfschutzhaube einzublasen. Für den Fall, daß ein Schutz der Augen vor körnigen Materialien nicht erforderlich ist, besteht bei einigen derartigen Kopfschutzhauben die Möglichkeit, daß das vor den Augen angeordnete durchsichtige Schutzfenster aufgeklappt werden kann.An essential condition of such closed head protection hoods, which are transparent in the area of the eyes. Have plastic or glass made protective window, it is that sufficient fresh air is always provided in the interior of the head protection hood. This is usually done in such a way that either fresh air flows through the entire head protection hood or the fresh air is fed directly to the mouth or nose opening of the person wearing the head protection hood. It is also known (FR-A-2106 753) to blow the fresh air into the protective head cover along the inner surface of the protective window. In the event that it is not necessary to protect the eyes from granular materials, there is the possibility with some such protective hoods that the transparent protective window arranged in front of the eyes can be opened.

Obgleich die bekannten Kopfschutzhauben eine vollkommene Lösung zur Versorgung des Benutzers mit Frischluft gewährleisten, konnten sich diese Konstruktionen in den für die Gesundheit gefährlichsten Industriebereichen, wie beispielsweise in Färbereien oder in Spritzständen, in welchen mit Hilfe von Spritzpistolen synthetische Stoffe verspritzt werden, nicht verbreiten. Dies liegt insbesondere daran, daß die in der Luft vorhandenen Verunreinigungen sich sehr schnell an das die Augen schützende Schutzfenster anlagern und dadurch den Benutzer der Kopfschutzhaube beim Sehen behindern bzw. ein einwandfreies Sehen unmöglich machen. Dies kommt insbesondere in Spritzständen vor, in welchen mit Spritzpistolen pulverisierte und/oder elektrisch aufgeladene Farbstoffteilchen verspritzt werden, die sich besonders schnell an das durchsichtige Schutzfenster ab- bzw. anlagern. Besteht dabei das Schutzfenster aus einem Kunststoff, so ist das Sichtfeld binnen kurzer Zeit matt und wird aufgrund der fortlaufenden Reinigung verhältnismäßig schnell zerstört. Bei der erwähnten bekannten Kopfschutzhaube (FR-A-2 106 753) wurde zwar bereits vorgesehen, vor der Außenseite des Schutzfensters einen zusätzlichen Luftvorhang zu erzeugen. Da die Luft für diesen äußeren Luftvorhang jedoch aus dem gleichen Verteilerkanal zugeführt wird, aus dem auch die an der Innenseite des Schutzfensters in die Kopfschutzhaube eingeblasene Frischluft zugeführt wird, ist der Druck für diese Frischluft zu hoch, wenn der äußere Luftvorhang zur wirksamen Verhinderung einer Verschmutzung des Schutzfensters möglichst stark sein soll.Although the well-known head protection hoods guarantee a perfect solution for supplying the user with fresh air, these constructions could not be used in the most dangerous industrial areas, such as dyeing plants or spray booths, in which synthetic materials are sprayed with the aid of spray guns. This is due in particular to the fact that the impurities present in the air accumulate very quickly on the protective window protecting the eyes and thereby hinder the user of the head protection hood when viewing or make perfect vision impossible. This occurs in particular in spray booths in which powder particles which have been powdered and / or electrically charged are sprayed and which accumulate or accumulate particularly quickly on the transparent protective window. If the protective window is made of a plastic, the field of vision becomes matt within a short time and is destroyed relatively quickly due to the continuous cleaning. In the known head protection hood mentioned (FR-A-2 106 753), provision has already been made to generate an additional air curtain in front of the outside of the protective window. However, since the air for this outer air curtain is supplied from the same distribution channel from which the fresh air blown into the protective window on the inside of the protective window is supplied, the pressure for this fresh air is too high if the outer air curtain effectively prevents contamination the protective window should be as strong as possible.

Hinzu kommt, daß das Benutzen der bekannten vollständig geschlossenen Kopfschutzhauben auch psychologisch unangenehm ist, da es beim Benutzer das Gefühl der Abgeschlossenheit hervorruft, das für viele Menschen unerträglich ist.In addition, the use of the known fully closed head protection hoods is also psychologically uncomfortable, since it gives the user the feeling of being closed, which is unbearable for many people.

Es sind auch Kopfschutzkappen bekannt (DE-C-1 087 906), bei denen mittels Düsen an dem Kappenschirm ein Luftvorhang vor dem Gesicht des Benutzers erzeugt wird und ein gesonderter Atemschlauch vorgesehen ist, dessen Mundstück in den Mund genommen wird, während die Nasen- öffnungen mit einer Nasenklammer verschlossen werden. Dies ist für den Benutzer nicht angenehm. Es wurden aber auch den ganzen Kopf des Benutzers überdeckende Kopfschutzhauben mit einer unbedeckten Schauöffnung bekannt (FR-A-1 102 541 rings deren gesamten Randes schräg nach außen vor die Mitte der Schauöffnung gerichtete Luftstrahlen ausgeblasen werden. Zusätzlich wird an der Rückseite der Schutzhaube Atemluft in diese eingeblasen, weil durch den die Schauöffnung überstreichenden Luftvorhang im Bereich der Schauöffnung ein Unterdruck erzeugt wird, der das Atmen erschwert. Da jedoch bei der bekannten Kopfschutzhaube die zusätzliche Atemluft an der Rückseite der Schutzhaube in diese eingeführt wird, kann sie nur an beiden Seiten des Kopfes nach vorn strömen, so daß sie unter dem Sog des Luftvorhanges vorwiegend zu den beiden Seitenrändern der Schauöffnung hingesaugt wird und daher im Bereich der Mund-und Nasenöffnung der Trägerperson immer noch ein das Atmen beeinträchtigender Unterdruck umso stärker vorhanden ist, je größer die Strömungsgeschwindigkeit für die Ausbildung eines wirksamen Luftvorhanges ist.Head protection caps are also known (DE-C-1 087 906), in which an air curtain is generated in front of the face of the user by means of nozzles on the cap screen and a separate breathing tube is provided, the mouthpiece of which is taken into the mouth while the nasal openings are closed with a nose clip. This is not pleasant for the user. However, head protection hoods with an uncovered viewing opening covering the entire head of the user have also become known (FR-A-1 102 541 is blown out with air jets directed obliquely outwards in front of the center of the viewing opening These are blown in because the air curtain sweeping over the viewing opening creates a negative pressure in the area of the viewing opening, which makes breathing more difficult. However, since with the known head protection hood the additional breathing air is introduced into the back of the protection hood, it can only be used on both sides of the Flow head forward so that it is sucked under the suction of the air curtain predominantly to the two side edges of the viewing opening and therefore in the area of the mouth and nose opening of the wearer there is still a negative pressure which impedes breathing, the greater the flow velocity for the training of a we ksamen air curtain.

Der Erfindung liegt die Aufgabe zugrunde, eine kombinierte Atmungs-, Augen- und Kopfschutzhaube zu entwickeln, welche den ganzen Kopfbereich gegenüber äußeren mechanischen und verunreinigenden Einwirkungen schützt, bei unbedeckter Schauöffnung durch Ausbildung eines möglichst starken Luftvorhanges vor der Schauöffnung einen wirksamen Schutz für die Augen gegenüber gasförmigen oder feinkörnigen Verunreinigungen des äußeren Luftraumes bietet und gleichwohl ein müheloses Atmen bei ausreichender Frischluftzufuhr sicherstellt.The invention has for its object to develop a combined breathing, eye and head protection hood, which protects the entire head area against external mechanical and contaminating effects, with an uncovered viewing opening by forming the strongest possible air curtain in front of the viewing opening effective protection for the eyes offers gaseous or fine-grained impurities of the outer air space and at the same time effortless breathing when out sufficient fresh air supply ensures.

Die Erfindung beruht darauf, daß bei einer eine unbedeckte Schauöffnung aufweisenden Kopfschutzhaube ein Luftvorhang aus mit hoher Geschwindigkeit strömender Luft derart ausgebildet werden kann, daß einerseits das Einströmen der äußeren verunreinigten Luft in Richtung der Augen bzw. in die Kopfschutzhaube verhindert und andererseits durch den in der Zone zwischen Atmungsorgan und Luftvorhang gebildeten Unterdruck die in die Haube geförderte Atmungsluft in die gewünschte Richtung, d. h. zu der Nasenund Mundöffnung geführt werden kann, so daß in dem Innenraum der Kopfschutzhaube, insbesondere vor der Nasen- und Mundöffnung, stets Frischluft in ausreichender Menge zur Verfügung steht.The invention is based on the fact that, in the case of a head protection hood having an uncovered viewing opening, an air curtain can be formed from air flowing at high speed in such a way that, on the one hand, the influx of the outside contaminated air in the direction of the eyes or into the head protection hood is prevented and, on the other hand, through that in the Zone between the respiratory system and the air curtain, the breathing air conveyed into the hood in the desired direction, d. H. can be guided to the nose and mouth opening so that fresh air is always available in sufficient quantity in the interior of the head protection hood, in particular in front of the nose and mouth opening.

Dies wird durch die Erfindung dadurch erreicht, daß die an die Frischluftversorgungsleitung angeschlossene Austrittsöffnung unterhalb der Schauöffnung im Bereich der Mund- und Nasenöffnung der die Haube tragenden Person angeordnet ist und daß die der Erzeugung des Luftvorhanges dienenden Öffnungen oberhalb der Schauöffnung für die Erzeugung eines etwa in der Fläche der Schauöffnung liegenden Luftvorhanges angeordnet und ausgebildet sind.This is achieved by the invention in that the outlet opening connected to the fresh air supply line is arranged below the viewing opening in the area of the mouth and nose opening of the person wearing the hood and in that the openings serving to produce the air curtain above the viewing opening for the production of an approximately in the surface of the air curtain opening are arranged and formed.

Die die Öffnungen zur Erzeugung des Luftvorhanges aufweisende Verteilerkammer und die Frischluft-Austrittsöffnung können mit gesonderten Luftanschlüssen verbunden sein. Alternativ sind die Verteilerkammer und die Frischluft-Austrittsöffnung mit einem gemeinsamen Luftanschluß verbunden, wobei in der Frischluftversorgungsleitung ein gesondertes, die Luftmenge kontrollierendes Hand-Regelventil vorgesehen ist.The distribution chamber having the openings for generating the air curtain and the fresh air outlet opening can be connected to separate air connections. Alternatively, the distribution chamber and the fresh air outlet opening are connected to a common air connection, a separate manual control valve controlling the air quantity being provided in the fresh air supply line.

Die zur Erzeugung des Luftvorhanges dienenden Öffnungen können als Bohrungen oder Spalte ausgebildet sein. Eine besonders vorteilhafte Ausführungsform besteht jedoch darin, die Öffnungen in Form von Präzisionsdüsen auszubilden, die in Form von Kugelventilen individuell einstellbar am oberen Rand der Schauöffnung angeordnet sein können.The openings used to generate the air curtain can be designed as bores or gaps. A particularly advantageous embodiment, however, consists in designing the openings in the form of precision nozzles, which can be arranged individually adjustable in the form of ball valves on the upper edge of the viewing opening.

Aus der gemeinsamen Luftspeisequelle kann die Luft über eine entsprechende Luftvorbereitungseinheit, einen Druckregler, das die Luftmenge kontrollierende Regelventil (eventuell mehrere Ventile), flexible Verbindungsleitungen und einen Schnellanschluß zur bzw. in die Kopfschutzhaube geführt werden.From the common air supply source, the air can be led to or into the head protection hood via a corresponding air preparation unit, a pressure regulator, the control valve (possibly several valves) controlling the air volume, flexible connecting lines and a quick connection.

Die Erfindung wird anhand einiger vorteilhafter Ausführungsformen, die aus der beiliegenden Zeichnung ersichtlich sind, erläutert. In der Zeichnung zeigt :

  • Figur 1 eine Kopfschutzhaube und deren Anordnung auf dem Kopf,
  • Figur 2 eine andere Ausführungsform der Kopfschutzhaube,
  • Figur 3 eine Kopfschutzhaube zusammen mit dem erforderlichen Luftversorgungssystem, während des Einsatzes und
  • Figur 4 den Schnitt durch eine Verteilerkammer und durch eine der den Luftvorhang erzeugenden Düsen in der Kopfschutzhaube.
The invention is explained on the basis of some advantageous embodiments which can be seen from the accompanying drawing. The drawing shows:
  • FIG. 1 shows a head protection hood and its arrangement on the head,
  • FIG. 2 shows another embodiment of the head protection hood,
  • Figure 3 shows a head protection hood together with the required air supply system, during use and
  • Figure 4 shows the section through a distribution chamber and through one of the nozzles generating the air curtain in the head protection hood.

Die Kopfschutzhaube 1 weist eine freie, unbedeckte Schauöffnung 10 auf. Wie aus Fig. 1 ersichtlich, ist an der oberen Hälfte der Schutzhaube 1 eine durchgehende Luftleitung 2 angeordnet, die im Bereich des Hinterkopfes mit ihren beiden Enden in einem Anschluß 8 endet und im Bereich der Schauöffnung 10 oberhalb derselben in eine einen größeren Querschnitt aufweisende Verteilerkammer 3 übergeht. In der Verteilerkammer 3 sind Öffnungen 4 vorgesehen, die als Ausströmöffnungen zur Bildung eines Luftvorhanges dienen. Bei der aus Fig. 1 ersichtlichen Ausführungsform sind die Öffnungen 4 als Düsen ausgebildet. Sie können aber auch als vertikal verlaufende Spalte ausgebildet sein.The head protection hood 1 has a free, uncovered viewing opening 10. As can be seen from Fig. 1, a continuous air line 2 is arranged on the upper half of the protective hood 1, which ends in the area of the back of the head with its two ends in a connection 8 and in the area of the viewing opening 10 above the same in a distribution chamber having a larger cross section 3 passes. Openings 4 are provided in the distribution chamber 3 and serve as outflow openings to form an air curtain. In the embodiment shown in FIG. 1, the openings 4 are designed as nozzles. But they can also be designed as a vertically extending column.

Ferner ist an der Kopfschutzhaube 1 in Höhe der Nasenund Mundöffnung eine Austrittsöffnung 6 eines Kanals für die Zufuhr von Frischluft vorgesehen, der mit seinen beiden Enden in eine rings um die Kopfschutzhaube 1 laufende Frischluftversorgungsleitung 5 mündet, die ihrerseits im Bereich des Hinterkopfes mit einem Luftanschluß 9 verbunden ist. In die Austrittsöffnung 6 kann ein Filter 7 eingesetzt werden, das mit einer perforierten Abdeckung überspannt sein kann.Furthermore, an outlet opening 6 of a channel for the supply of fresh air is provided on the head protection hood 1 at the level of the nose and mouth opening, which ends with its two ends in a fresh air supply line 5 running around the head protection hood 1, which in turn has an air connection 9 in the area of the back of the head connected is. A filter 7 can be inserted into the outlet opening 6 and can be covered with a perforated cover.

Für den Fall, daß eine perforierte Abdeckung vorgesehen ist, ist diese abnehmbar, um ein Austauschen des Filters zu ermöglichen.In the event that a perforated cover is provided, it can be removed to allow the filter to be replaced.

Die aus Fig. 2 ersichtliche Ausführungsform der Kopfschutzhaube 1 weicht insofern von jener aus Fig. 1 ab, als die in die Verteilerkammer 3 mündende Luftleitung 2 zusammen mit der Frischluftversorgungsleitung 5 mit einem gemeinsamen Luftanschluß 8, 9 verbunden sind.The embodiment of the head protection hood 1 shown in FIG. 2 differs from that in FIG. 1 in that the air line 2 opening into the distribution chamber 3 is connected together with the fresh air supply line 5 to a common air connection 8, 9.

Beide aus den Fig. 1 und 2 ersichtlichen Ausführungsformen sind zweckmäßigerweise mit einem Handgriff 17 versehen. An die Kopfschutzhaube 1 kann von unten her ein Schulterschutzmittel aus textilem Material angeschlossen sein.Both of the embodiments shown in FIGS. 1 and 2 are expediently provided with a handle 17. A shoulder protection means made of textile material can be connected to the head protection hood 1 from below.

Sofern die Speiseluft den Reinheitsanforderungen entspricht, kann die aus Fig. 2 ersichtliche Ausführungsform zur Verwendung kommen, während bei einer Verunreinigungen aufweisenden Speiseluft diese nur zur Erzeugung des Luftvorhanges verwendet werden kann (vgl. Fig. 1) und die Frischluftversorgungsleitung 5 mit der Austrittsöffnung 6 an eine besondere, frischluftfördernde Leitung angeschlossen ist.If the supply air corresponds to the purity requirements, the embodiment shown in FIG. 2 can be used, whereas if the supply air contains contaminants, it can only be used to generate the air curtain (see FIG. 1) and the fresh air supply line 5 with the outlet opening 6 a special fresh air supply line is connected.

Wie aus Fig. 3 ersichtlich, ist der Anschluß 8 bzw. 9 über Leitungen 18 an ein Regelventil 13 angeschlossen, welches etwa in Taillienhöhe. auf dem Rücken der die Kopfschutzhaube tragenden Person befestigt ist. Das Regelventil 13 ist über ein Luft förderndes Rohr 12 an einen Druckregler 14 angeschlossen, der seinerseits mit einem Filter 15 in Verbindung steht.As can be seen from FIG. 3, the connection 8 or 9 is connected via lines 18 to a control valve 13, which is approximately at the waist height. is attached to the back of the person wearing the head protection hood. The control valve 13 is connected via an air-conveying pipe 12 to a pressure regulator 14, which in turn is connected to a filter 15.

Aus Fig. 4 ist im Schnitt der oberhalb der Schauöffnung 10 befindliche Teil der Kopfschutzhaube 1 dargestellt. Wie aus Fig. 4 ersichtlich, ist in einer Öffnung 20 in der Wand der Verteilerkammer.3 ein Aufnahmeteil 19 angeordnet, das mit einer Bohrung 21 versehen ist, die an ihrem zur Schauöffnung 10 hinweisenden Teil 22 diffusorartig erweitert ist. In die Bohrung 21 ist eine Kugal 16 derart eingesetzt, daß ihre der Schauöffnung 10 zugewandete Begrenzung dort zu liegen kommt, wo sich die Bohrung 21 zum diffusorartig erweiterten Teil 22 hin zu erweitern beginnt. Die Kugel 16 ist in der Bohrung 21 verstellbar gelagert und weist einen die Öffnungen 4 aus Fig. 1 oder 2 bildenden Durchgang 23 mit einem wesentlich kleineren Querschnitt als die Bohrung 21 auf. Durch die Verstellung der Kugel 16 kann die Ausblasrichtung der durch den Durchgang 23 strömenden Luft den jeweiligen Bedingungen entsprechend angepaßt werden.The part of the head protection hood 1 located above the viewing opening 10 is shown in FIG. 4 in section. As can be seen from FIG. 4, a receiving part 19 is arranged in an opening 20 in the wall of the distributor chamber 3, which is provided with a bore 21 which diffuses on its part 22 pointing towards the viewing opening 10 is expanded like a care. A ball 16 is inserted into the bore 21 in such a way that its boundary facing the inspection opening 10 comes to lie where the bore 21 begins to expand towards the part 22 which is expanded like a diffuser. The ball 16 is adjustably mounted in the bore 21 and has a passage 23 forming the openings 4 from FIG. 1 or 2 with a substantially smaller cross section than the bore 21. By adjusting the ball 16, the blow-out direction of the air flowing through the passage 23 can be adapted to the respective conditions.

Mit der erfindungsgemäßen Kopfschutzhaube 1 nach Fig. 1 wurden Messungen unter Verhältnissen durchgeführt, bei denen die äußeren Bedingungen wesentlich schlechter waren, als normal üblich ist. So wurde bei dem Versprühen von Polyesterharz und unter gleichzeitiger Abstellung der Ventilation einer Produktionshalle in dem äußeren Raum eine unerträglich hohe Styrolverunreinigung von 1 500 mg/m3 erzeugt. In dem Luftstrom der Kopfschutzhaube 1 wurde trotz der recht großen Schauöffnung 10 nur eine Konzentration von 3 mg/m3 gemessen, die erheblich den zulässigen Grenzwert unterschreitet. Die Kopfschutzhaube 1 wurde dabei unter Zuhilfenahme eines Kompressors mit einer Leistung von 15 m3/Stunde mit Luft in einem diskontinuierlichen Betrieb versorgt. Durch diese Messungen wurde aufgezeigt, daß durch den Einsatz der erfindungsgemäßen Kopfschutzhaube 1 der allgemein übliche Luftaustausch an für die Gesundheit schädlichen Arbeitsplätzen (Spritzständen und überall wo mit Spritzpistolen synthetische Stoffe verspritzt werden) um Größenordnungen vermindert werden kann, insbesondere in den Wintermonaten, eine bedeutende Energieersparnis erreicht wird. Bisher konnte unter Verwendung der bekannten Kopfschutzhauben auf einen starken Luftaustausch nicht verzichtet werden, da dann in besonders starkem Maß die Gefahr bestand, daß die in der Luft schwebenden Teilchen bei geöffneter Schauöffnung in den Bereich der Augen gelangen oder bei geschiossener Schauöffnung an dem vor den Augen befindlichen Fenster abgelagert werden.With the head protection hood 1 according to the invention according to FIG. 1, measurements were carried out under conditions in which the external conditions were significantly worse than is normal. Thus, when polyester resin was sprayed and the ventilation of a production hall was switched off at the same time, an unbearably high styrene contamination of 1,500 mg / m 3 was generated. Despite the rather large inspection opening 10, only a concentration of 3 mg / m 3 was measured in the air flow of the head protection hood 1, which is considerably below the permissible limit. The head protection hood 1 was supplied with air with the help of a compressor with an output of 15 m 3 / hour in a discontinuous operation. These measurements have shown that the use of the head protection hood 1 according to the invention enables the general exchange of air at workplaces which are harmful to health (spray booths and everywhere where spray guns are used to spray synthetic substances) to be reduced by orders of magnitude, in particular in the winter months, a significant energy saving is achieved. So far, it was not possible to do without a strong air exchange using the known head protection hoods, since there was then a particularly high risk that the particles floating in the air would get into the area of the eyes when the viewing opening was open or at the front of the eyes when the viewing opening was closed windows are deposited.

Bei der aus Fig. 2 ersichtlichen Ausführungsform kann in der Frischluftleitung 5 zusätzlich zu den in Taillienhöhe befindlichen Reglerventilen 13 ein handbetätigbares Ventil 24 vorgesehen sein, durch das der Frischluftdurchsatz eingeetettt bzw. nachgestellt werden kann.In the embodiment shown in FIG. 2, a manually operable valve 24 can be provided in the fresh air line 5 in addition to the regulator valves 13 located at the waist, through which the fresh air throughput can be greased or adjusted.

Claims (5)

1. Head protection hood (1) covering the complete head and having an uncovered observation opening (10), a distribution chamber (3) located above the observation opening (10) and provided with a plurality of orifices (4) for producing an air curtain covering the observation opening (10), whereby the distribution chamber (3) can be connected to a compressed air source, whilst a discharge opening (6) located within the hood is connected to a fresh air supply line (5), characterized in that the discharge opening (6) is located below the observation opening (10) in the vicinity of the mouth and nose openings of the wearer of the head protection hood (1) and that the orifices (4) are arranged and formed above the observation opening (10) for producing an air curtain located approximately in the surface of observation opening (10).
2. Head protection hood according to claim 1, characterized in that the distribution chamber (3) and fresh air discharge opening (6) are connected to separate air connections (8, 9).
3. Head protection hood according to claim 1, characterized in that the distribution chamber (3) and the fresh air discharge opening (6) are connected to a common air connection (8, 9) and that a separate hand valve (24) is provided in the fresh air supply line (5).
4. Head protection hood according to one of the claims 1 to 3, characterized in that the orifices (4) for producing the air curtain are constructed as precision nozzles (16), whose outflow direction can be adjusted.
5. Head protection hood according to one of the claims 1 to 4, characterized in that a filter (7) is inserted in discharge opening (6).
EP19800105040 1979-09-06 1980-08-25 Head protection hood Expired EP0027521B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HUMU000621 HU182034B (en) 1979-09-06 1979-09-06 Combinated labour-safety helmet shield
HUMU000621 1979-09-06

Publications (2)

Publication Number Publication Date
EP0027521A1 EP0027521A1 (en) 1981-04-29
EP0027521B1 true EP0027521B1 (en) 1983-07-13

Family

ID=10999779

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EP19800105040 Expired EP0027521B1 (en) 1979-09-06 1980-08-25 Head protection hood

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EP (1) EP0027521B1 (en)
JP (1) JPS56101904A (en)
AU (1) AU6170880A (en)
DE (1) DE3064136D1 (en)
HU (1) HU182034B (en)
IN (1) IN152215B (en)

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DE19613825B4 (en) * 1996-04-06 2004-07-15 Dr.Ing.H.C. F. Porsche Ag mask
AU2013200878B2 (en) * 2007-11-12 2014-10-09 3M Innovative Properties Company Respirator assembly with air flow direction control
US8936022B2 (en) 2007-03-23 2015-01-20 3M Innovative Properties Company Air delivery apparatus for respirator hood
US9868001B2 (en) 2007-10-05 2018-01-16 3M Innovative Properties Company Respirator flow control apparatus and method
US10137320B2 (en) 2007-03-23 2018-11-27 3M Innovative Properties Company Respirator flow control apparatus and method
WO2024116013A1 (en) * 2022-11-30 2024-06-06 Dyson Technology Limited A wearable air purifier

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IT1394265B1 (en) * 2008-09-19 2012-06-01 Groppo CONTAINMENT AND / OR TRANSPORTATION DEVICE FOR CHILDREN, PARTICULARLY BUT NOT ONLY, FOR STROLLERS, WHEELCHAIRS, ASSs, SEATS OR SIMILAR
CN102907811B (en) * 2012-11-07 2015-12-09 中国矿业大学 A kind of air screen dustproof helmet and method
US10214666B2 (en) 2013-12-04 2019-02-26 3M Innovative Properties Company Optically clear adhesives for durable plastic bonding
CN111111036A (en) * 2020-02-27 2020-05-08 江西八纵科技有限公司 Positive pressure air purification protective cover and method
CN111544790A (en) * 2020-04-13 2020-08-18 宁波雷奥自动化设备有限公司 Head protection cover
JP6952230B1 (en) * 2020-11-27 2021-10-20 有限会社ワイ・エンタープライズ Pneumatic face guard
CN113058174B (en) * 2021-04-15 2022-10-21 王德普 Breathing machine
CN114191733B (en) * 2021-11-29 2022-10-14 中国矿业大学 Open air supply dustproof respirator based on effective suction area of human body

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DE835635C (en) * 1945-11-01 1952-04-03 Marinus Christensen A device that can be strapped to the forehead to protect the face against toxic gases and dust
DE917835C (en) * 1951-03-06 1954-09-13 Marianne Loenne Geb Koppers Protective device for workers who are in a dusty atmosphere
DE919863C (en) * 1951-03-06 1954-11-04 Marianne Loenne Geb Koppers Protective device for workers who are in a dusty atmosphere
FR1102541A (en) * 1954-04-06 1955-10-24 Simca Automobiles Sa Protective devices intended for work carried out in noxious, dusty atmosphere, etc., and in particular for spray painting
FR1208081A (en) * 1957-12-04 1960-02-22 Breathing apparatus for dust protection
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19613825B4 (en) * 1996-04-06 2004-07-15 Dr.Ing.H.C. F. Porsche Ag mask
US8936022B2 (en) 2007-03-23 2015-01-20 3M Innovative Properties Company Air delivery apparatus for respirator hood
US10137320B2 (en) 2007-03-23 2018-11-27 3M Innovative Properties Company Respirator flow control apparatus and method
US9868001B2 (en) 2007-10-05 2018-01-16 3M Innovative Properties Company Respirator flow control apparatus and method
AU2013200878B2 (en) * 2007-11-12 2014-10-09 3M Innovative Properties Company Respirator assembly with air flow direction control
WO2024116013A1 (en) * 2022-11-30 2024-06-06 Dyson Technology Limited A wearable air purifier

Also Published As

Publication number Publication date
IN152215B (en) 1983-11-19
JPS56101904A (en) 1981-08-14
DE3064136D1 (en) 1983-08-18
AU6170880A (en) 1981-03-12
HU182034B (en) 1983-12-28
EP0027521A1 (en) 1981-04-29

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