EP0027521B1 - Casque de protection pour la tête - Google Patents

Casque de protection pour la tête Download PDF

Info

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
Authority
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
Other languages
German (de)
English (en)
Other versions
EP0027521A1 (fr
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
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 Mueanyagipari Kutato Intezet, Muanyagipari Kutato Intezet filed Critical Mueanyagipari Kutato Intezet
Publication of EP0027521A1 publication Critical patent/EP0027521A1/fr
Application granted granted Critical
Publication of EP0027521B1 publication Critical patent/EP0027521B1/fr
Expired legal-status Critical Current

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Classifications

    • 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.

Landscapes

  • 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)

Claims (5)

1. Casque de protection pour la tête (1) recouvrant la totalité de la tête et qui est pourvu d'une ouverture de vision non recouverte (10), d'une chambre de distribution (3) située au-dessus de l'ouverture (10) et comportant plusieurs orifices (4) servant à produire un rideau d'air recouvrant l'ouverture de vision (10) et qui peut être reliée à une source d'air comprimé, et d'un orifice de sortie (6) disposé à l'intérieur du casque et relié à un tuyau d'alimentation en air frais (5), caractérisé en ce'que l'orifice de sortie (6) est disposé, en dessous de l'ouverture de vision (10), dans la zone des orifices du nez et de la bouche de la personne portant le casque (1), et en ce que les orifices (4) servant à la production du rideau d'air sont disposés et agencés au-dessus de l'ouverture de vision (10) en vue de produire un rideau d'air situé à peu près dans la surface de l'ouverture de vision (10).
2. Casque de protection pour la tête selon la revendication 1, caractérisé en ce que la chambre de distribution (3) et l'orifice de sortie d'air frais (6) sont reliés à des raccords d'air particuliers (8, 9).
3. Casque de protection pour la tête selon l'a revendication 1, caractérisé en ce que la chambre de distribution (3) et l'orifice de sortie d'air frais (6) sont reliés à un raccord d'air commun (8, 9) et en ce qu'il est prévu dans le tuyau d'alimentation en air frais (5) une valve manuelle particulière (24).
4. Casque de protection pour la tête selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les orifices (4) servant à la production du rideau d'air sont agencés sous la forme de buses de précision (16) dont la direction de sortie d'écoulement est réglable.
5. Casque de protection pour la tête selon l'une quelconque des revendications 1 à 4, caractérisé en qu'un filtre (7) est placé dans ledit orifice de sortie (6).
EP19800105040 1979-09-06 1980-08-25 Casque de protection pour la tête Expired EP0027521B1 (fr)

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 (fr) 1981-04-29
EP0027521B1 true EP0027521B1 (fr) 1983-07-13

Family

ID=10999779

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800105040 Expired EP0027521B1 (fr) 1979-09-06 1980-08-25 Casque de protection pour la tête

Country Status (6)

Country Link
EP (1) EP0027521B1 (fr)
JP (1) JPS56101904A (fr)
AU (1) AU6170880A (fr)
DE (1) DE3064136D1 (fr)
HU (1) HU182034B (fr)
IN (1) IN152215B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19613825B4 (de) * 1996-04-06 2004-07-15 Dr.Ing.H.C. F. Porsche Ag Schutzmaske
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

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2327192B (en) * 1997-07-14 2001-08-29 Christopher Raymond Close Mobile clean air supply unit
AU2008321312B2 (en) * 2007-11-12 2012-11-29 3M Innovative Properties Company Respirator assembly with air flow direction control
IT1394265B1 (it) * 2008-09-19 2012-06-01 Groppo Dispositivo di contenimento e/o di trasporto per bambini, particolarmente ma non esclusivamente, per passeggini, carrozzine, culle, seggiolini o simili
CN102907811B (zh) * 2012-11-07 2015-12-09 中国矿业大学 一种空气幕防尘头盔及方法
WO2015084960A1 (fr) 2013-12-04 2015-06-11 3M Innovative Properties Company Adhésifs optiquement transparents pour liaison plastique durable
CN111111036A (zh) * 2020-02-27 2020-05-08 江西八纵科技有限公司 一种正压空气净化防护罩及方法
CN111544790A (zh) * 2020-04-13 2020-08-18 宁波雷奥自动化设备有限公司 一种头部防护罩
JP6952230B1 (ja) * 2020-11-27 2021-10-20 有限会社ワイ・エンタープライズ エア式フェイスガード
CN113058174B (zh) * 2021-04-15 2022-10-21 王德普 呼吸机
CN114191733B (zh) * 2021-11-29 2022-10-14 中国矿业大学 一种基于人体有效吸程区的开放式送风防尘呼吸器

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE142817C (fr) *
DD15294A (fr) *
US1646103A (en) * 1927-02-16 1927-10-18 Byron O Patrick Compressed-air protective shield
DE835635C (de) * 1945-11-01 1952-04-03 Marinus Christensen An die Stirn festschnallbare Vorrichtung zum Schutze des Gesichts gegen giftige Gaseund Staub
DE917835C (de) * 1951-03-06 1954-09-13 Marianne Loenne Geb Koppers Schutzeinrichtung fuer Arbeiter, die sich in staubhaltiger Atmosphaere aufhalten
DE919863C (de) * 1951-03-06 1954-11-04 Marianne Loenne Geb Koppers Schutzeinrichtung fuer Arbeiter, die sich in staubhaltiger Atmosphaere aufhalten
FR1102541A (fr) * 1954-04-06 1955-10-24 Simca Automobiles Sa Appareils protecteurs destinés aux travaux exécutés en atmosphère nocive, poussiéreuse, etc., et notamment à la peinture au pistolet
FR1208081A (fr) * 1957-12-04 1960-02-22 Appareil respiratoire pour la protection contre les poussières
FR1314109A (fr) * 1962-01-03 1963-01-04 Dunlop Rubber Co Dispositif de protection du visage
FR2106753A5 (fr) * 1970-09-23 1972-05-05 Spirotechnique

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19613825B4 (de) * 1996-04-06 2004-07-15 Dr.Ing.H.C. F. Porsche Ag Schutzmaske
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

Also Published As

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

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