EP1007157B1 - Unite de valve pour vetement de protection integrale - Google Patents

Unite de valve pour vetement de protection integrale Download PDF

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Publication number
EP1007157B1
EP1007157B1 EP99918421A EP99918421A EP1007157B1 EP 1007157 B1 EP1007157 B1 EP 1007157B1 EP 99918421 A EP99918421 A EP 99918421A EP 99918421 A EP99918421 A EP 99918421A EP 1007157 B1 EP1007157 B1 EP 1007157B1
Authority
EP
European Patent Office
Prior art keywords
air
valve
clothing
spindle
hose
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 - Lifetime
Application number
EP99918421A
Other languages
German (de)
English (en)
Other versions
EP1007157A1 (fr
Inventor
Lars Hugo Strongert
Leif SÖDERLUND
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.)
Spiromec AB
Original Assignee
Spiromec AB
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 Spiromec AB filed Critical Spiromec AB
Publication of EP1007157A1 publication Critical patent/EP1007157A1/fr
Application granted granted Critical
Publication of EP1007157B1 publication Critical patent/EP1007157B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A62B9/00—Component parts for respiratory or breathing apparatus
    • A62B9/02—Valves
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B17/00—Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes
    • A62B17/006—Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes against contamination from chemicals, toxic or hostile environments; ABC suits

Definitions

  • the present invention refers to a valve unit, preferably for air of that kind that is indicated in the preamble of the accompanied main claims.
  • the contaminated environment can be as well corrosive, as radio active or contain biological active harmful organisms and appear as gases or dust.
  • valve unit and the surronding equipments that are connected to the protective clothing and this to make secure and reliable supply of air for ventilation purpose into the clothing for the comfort of the carrier, and furthermore for the latter's continuous and necsessary need of breathing air supplied in.
  • Known protective clothings have control means, which give undefined flow amounts for ventilation and admit low pressure values to the free space of the clothing, and further more the outbreathed breathing air is used as an essential component in that very flushing air that is to ventilate the protective clothing.
  • Example of such a ventilation where the outlet valve in the protective clothing continuously drains off outwards a flushing amount corresponding to the outbreathed amount of air is disclosed in the patent specification DE-PS 1241713.
  • Control valve arranged in protective clothing for supply of pressure air for ventilation- and breathing purposes is described in a Swedish patent, published as No. 439588.
  • the control valve is here a pressure control valve essentially comprising a membrane 11 that is spring-loaded and of a handle bar arm arranged on a pressure valve 10, that sets the membrane to an appropriate position to achieve the overpressure of the clothing.
  • the transfer of breathing air is taking place from a non-volume defined inflated free-room 4, and that the out aspirated air more serves as flushing air.
  • a carrier of a protective clothing equipped with valve unit according to the invention is always secured pure feeding air from the air supply sources, as the carrier is carrying breathing mask with breathing valve of free-flow helmet.
  • These valves are further more spring-loaded.
  • the valve unit for ventilation air according to the invention is essentially cam-profile operated and put under a pressure of 7.5 bars.
  • a purpose is furthermore that the input air fed to the valve unit of the clothing can, alternatively depending on the circumstances, be taken from an external air supply source and be distributed by the valve unit within the clothing as ventilation air at the same time through flow takes place via an overflow passage to air - connected breathing mask/valve,being arranged to the carrier's breathing organ, or where appropriate, that internal container for compressed air, carried under the protective clothing co-operates with the valve unit and connecting components belonging to the same, in order to provide the carrier vasterly with breathing air, when the ventilation function can be throttled or by different reasons completely can be blocked.
  • a further purpose of the present invention is to increase the level of security in relation to what is known in the art by being able to connect alternative by-pass and switching devices, that can start to function in emergency cases and especially also be used in test situations. So for exaple alternative components can be put in the valve unit as spindles, nozzles etc.
  • the invention solves the aims related above by performing the valve arrangement with those special characterizing parts of the following patent claims.
  • valve unit 3 With 1 is designated a totally protective clothing of a modern kind with glass gauge for the carrier's sight and the valve unit 3, tightenly attached in front on the chest for safe and comfortable control.
  • An external air source 2a provides the valve unit, via mobile hose 4 and alternative connecting couplings said unit, with air that is flowing through the same.
  • This air will be divided up in the valve unit 3 as ventilation air to the clothing by means of the divert channels 7 and 7' for further passage via ventilation hoses 11 and 11' of the clothing, which each distribute the ventilation air upwards to the arms and downwards to the legs.
  • air for breathing purposes emanates by an attached hose 6, (see Fig.
  • the valve housing 13 has inside the protective clothing an arranged section that must be sealed against out-or inflowing media, and has therefor attached around the wall opening of the clothing a thin sealing ring 34 illustrated according to Fig. 3.
  • the ring 34 is lying over notches 36 in a distributing cover 26 mountable on the above said opening and is by that sealingly located against the clothing wall 1a.
  • a good sealing is achieved by the fact that a hook-shaped fastener has been arranged around the distributing cover 26, and so performed that it clamps up the clothing wall against the valve housing 13, when a cover holder 27 is screwed on the distributing cover 26.
  • the cover holder is by means of gasket ring, so called O-ring sealingly fixed to the distributing cover, and gives here space for a chamber 11, in that part of the valve unit 3 that protrudes in the protective clothing, i.e. the free space 14.
  • the valve unit 3 primarily comprises a therein arranged spindle housing 25 that by means of O-rings 38 (Fig. 6) are sealingly mounted in the space of the distributing cover 26.
  • a quick coupling 15 with integreted non-return valve is threadedly fixed to the outer lower part of the valve unit 3, and an overflow channel 16 in the valve housing of the unit 3 is in communication with the chamber 17.
  • a communication channel 52 carrying breathing air is connected, and said channel ends in an orifice (see Fig. 10), with the arrangements 45, 51 leading to the distributing cover 26.
  • To the lower part of the distributing cover is sealingly inserted a male piece of a hose coupling that enables engagement of alternative internal connecting devices, as an example plug 53.
  • FIG. 5 shows in lateral view an extension of the path 20a of the cam profile and illustrates the profile levels, which define the different end positions L 0 , L 2 , L 30 , L 150 /L 100 , that the spindle end 29 can take by abutment against the cam profile part, respectively.
  • the spindle 28 has, perpendicular to its longitudinal direction, a bored up, through channel 46, that ends in the channel 37 and permits the larger flow volumes in litres per minute to pass further into the channel 37.
  • An outlet port 49 penetrates through the spindle channel 37 upwards and ends in a transfer channel arranged in the valve spindle housing inside the bored hole 50. This hole is provided with a nozzle.
  • the upper opening 42 of the transfer channel in the valve spindle housing 25 leads to the hollow space in the distributing cover 26. From this mentioned cover, wide distributing channels 44a, 44b lead, oriented 180° in relation to each other, the inflowing out into the free-room of the clothing for the ventilation of the same.
  • an alternative nozzle can be put in.
  • a nozzle D 1 giving the flow volume of 150 litres per minute, but it can be replaced with the throttle nozzle D 2 that is screwed into the opening 42 and gives 100 litres per minute of ventilation air into the clothing.
  • Fig. 10 With reference to Fig. 10 is shown the path that external air flows through the valve unit and how a so called by-pass function is achieved. By this all mentioned ventilation positions of the clothing, as well as closed position of the seat S 1 , can be prevailing.
  • the external air fed in via hose 4 passes the channel 16 and the chamber 17, at for example closed seat S 1 , whereby an opening 45 in the chamber communicates the chamber 51 and 52 arranged in a lower part 18 of the interiour section of the valve housing 13 and connects to the feeding hose 6 for breathing air.
  • the reverse passage way for breathing air is possible, by, according to Fig. 11, internal air being connected to the angle tee 5 via shown hose 9 and regulator 12 and the air source 2b.
  • the pressure constituting the control pressure is 7.5 bars for the displacement of the spindle towards the path of the cam profile. This pressure is such that it easily is overcome for the displacement of the spindle in direction towards the seat S 1 .
  • pressure reduction occurs in the chamber 17, for example at rupture of the hose 4, a reverse motion of the spindle 28 to the seat S 1 takes place not as a consequence of prevailing pressure differences in a channel 37, but readjustment by restoring of the cam knob of the carrier to position L 0 is required and recommended.
  • the many-sidedness of the valve unit by its technical design manifests in case of emergency.
  • the non-return valve 15 starts to function,and does not permit intake into the valve unit of contaminated air, simultaneously as feeding air, automatically or manually, quickly is transmitted from the compressed air container 2b.
  • a pressure reduction sensing valve 33 is connected at the angle tee 5 on the feeding conduct.
  • the feeding pressure 7.5 bars is catered for in this case by a regulator 12 arranged to the container 2b.
  • the present valve unit has been manufactured and has been tested under different conditions, and aims to constitute an arbitr product to form an integral part of modern protective clothings and in that respect at least to stand up to the requirements of reliability that is claimed, when protective work is concerned.

Landscapes

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

Claims (4)

  1. Unité de vanne, de préférence pour de l'air, destinée à être raccordée à une combinaison de protection intégrale ventilée par de l'air comprimé, avec des dispositifs de commande pour le réglage de différents volumes définis d'amenée d'air, lesquels passent dans la combinaison comme air de rinçage, et ménageant une possibilité de raccordement simultané d'air respiratoire à l'usage du porteur de la combinaison, à partir d'une source d'air interne ou externe, caractérisée en ce qu'un corps de vanne (13), scellé et traversant la combinaison, comprenant des dispositifs d'entrée et de commande (4, 15, 16, 48 --- et 12, 33, 19, 28, ---) respectivement et des dispositifs de sortie (6, 8, 10, 42, 44, 7, 11 ---), lesquels sont fixés, de manière étanche sur la paroi de la combinaison (1a, 1b), à un couvercle de distribution (26) scellé et placé sur le côté intérieur de paroi (1b) de la combinaison et contenant le corps de vanne (13), étanché par des joints toriques, et en ce qu'une chambre (17), disposée latéralement par rapport au corps de vanne (13), reçoit de l'air via un canal de transfert (16) qui y aboutit, à partir d'un raccord de flexible (15) disposé à l'extérieur de la combinaison, et en ce qu'un pointeau mobile (28), placé dans le corps de vanne (13), et dont l'extrémité est dirigée vers la chambre (17), dans un premier stade, s'appuie sur un (premier) siège (S1, position L0) étanché par un joint torique et isole l'air de ventilation de la communication vers l'intérieur de la combinaison, et en ce que l'extrémité opposée (29) du pointeau (28) porte en permanence sur un profil de came (20) pendant ses mouvements de déplacement, et selon le réglage d'un bouton (19), ledit profil de came (20) donne des positions spécifiques, distinctives (L0, L2, L30, L150/L100, voir la Fig. 5), et qu'il permette par des trous (24) forés dans le corps de vanne (13), qui coopèrent avec une bille de positionnement (23) chargée par un ressort, à différents débits croissants de passer dans des passages de flux de largeur différente et totalement dégagés dans un logement (25) du pointeau de vanne, lorsque le pointeau (28) se déplace à partir du (premier) siège (S1), et que, parallèlement à la direction longitudinale du logement (25) de pointeau de vanne, un canal longitudinal (37) pourvu d'un ajutage est foré dans le pointeau de vanne (28), et que via un ajutage A2, un volume d'afflux d'air qui y passe est de 2 litres par minute dans une première position d'ouverture, et que le volume d'afflux d'air, dans une deuxième position suivante d'ouverture, passe à 30 litres par minute, et qu'un autre déplacement du pointeau (28) aboutit à une position finale, alors que dans le logement (25) de pointeau de vanne est totalement dégagé un passage plus large et étanché par un joint torique, ce qui crée un débit volumique 5 fois plus grand que ne le permettait l'autre position du pointeau, que les débits volumiques de 2 litres par minute et de 30 litres par minute lors de leur passage, respectivement dans le canal (37), passent dans un alésage (46) disposé perpendiculairement à et traversant le canal longitudinal (37), que l'alésage perpendiculaire, aux débits volumiques mentionnés, est en communication avec un trou foré (50) dans le corps de vanne (13) et se terminant vers l'ouverture en forme d'ajutage (49) ménagée dans le canal longitudinal (37), alors qu'au passage de ce plus grand débit volumique mentionné, il franchira un deuxième siège S3 étanché par un joint torique, pour s'écouler dans un autre canal (42) muni d'un ajutage et qui peut initialement comporter un ajutage (D1) débitant 150 litres par minute d'air de ventilation, ou encore un ajutage à papillon (D2) capable de débiter 100 litres par minute, l'ouverture de l'autre canal (42) se terminant dans le couvercle de distribution (26) d'où, via deux canaux circulaires larges et ouverts (44a, 44b), l'air quitte le couvercle de distribution (26) par, à chaque fois, une pièce en T, avec des flexibles de ventilation connectés (11, 11'), les canaux de distribution (44a, 44b) créant, par leur orientation de 180° entre eux, une distribution égale de volumes ajustés des débits de ventilation dans l'espace libre (14) de la combinaison de protection.
  2. Unité de vanne selon la revendication 1, caractérisée en ce qu'un volume d'air présentant une pression de 7,5 bars et provenant d'une source externe d'air (2a) traverse l'ouverture d'entrée via un flexible de connexion (4) et un clapet antiretour (15) intégré à un raccord de flexible et traverse ensuite le canal de transfert (16) pour aboutir dans la chambre (17) et sort par une ouverture (51) de la chambre et un deuxième canal de transfert communicant (52), de manière à permettre une connexion interne de l'air respiratoire dans la combinaison au moyen du dispositif de sortie, comprenant un flexible (6), une pièce en T (5) et un flexible d'alimentation (8) pour un masque respiratoire (10), à une position fermée, étanche du pointeau (28) contre le premier siège (S1), ainsi que dans les positions choisies mentionnées de ventilation (L2, L30 et en L150) ou à une position alternative du papillon (L100).
  3. Unité de vanne selon la revendication 1 ou 2, caractérisée en ce que, dans le flexible de raccordement (15), il existe un clapet antiretour intégré à celui-ci et coopérant avec le canal de transfert de raccordement (16) et la chambre (17), lorsqu'il se produit une baisse de pression dans la chambre (17), au premier siège (S1) ouvert.
  4. Application de l'unité de vanne et de ses moyens de connexion selon l'une quelconque des revendications précédentes, caractérisée en ce que, dans une situation d'urgence ou de fuite pour le porteur de la combinaison, du type d'une rupture de flexible sur le flexible externe (4), le clapet antiretour intégré au raccord de flexible (15) empêche la pénétration d'air contaminé via le canal de transfert (16) et la chambre (17), simultanément avec une baisse de pression qui se produit dans la chambre (17), et de cette manière aussi dans le canal longitudinal (37) du pointeau (28) au premier siège ouvert (S1), ce qui a pour résultat le fait qu'il se produit une restriction de l'air de ventilation, ce qui permet au porteur de réaliser lui-même, en manoeuvrant le bouton de came (19), un isolement définitif de l'air de ventilation du fait que le pointeau (28) est alors retourné au premier siège (S1), où de l'air interne provenant d'un réservoir d'air comprimé (2b) peut être rapidement connecté, automatiquement, ou manuellement, en tant qu'air respiratoire au moyen d'une vanne manométrique (33) et d'une vanne manostatique (12), et via la pièce en T (5), reliée au flexible intérieur sortant (6) et le raccord de flexible associé, relié à la partie du corps de vanne (18), et il s'ensuit un passage d'air respiratoire au moyen du flexible d'alimentation (8) vers le masque respiratoire/vanne de respiration (10) du porteur.
EP99918421A 1998-04-15 1999-04-12 Unite de valve pour vetement de protection integrale Expired - Lifetime EP1007157B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9801296A SE511868C2 (sv) 1998-04-15 1998-04-15 Ventilenhet samt användning av densamma
SE9801296 1998-04-15
PCT/SE1999/000585 WO1999055424A1 (fr) 1998-04-15 1999-04-12 Unite de valve pour vetement de protection integrale

Publications (2)

Publication Number Publication Date
EP1007157A1 EP1007157A1 (fr) 2000-06-14
EP1007157B1 true EP1007157B1 (fr) 2004-12-01

Family

ID=20410953

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99918421A Expired - Lifetime EP1007157B1 (fr) 1998-04-15 1999-04-12 Unite de valve pour vetement de protection integrale

Country Status (4)

Country Link
EP (1) EP1007157B1 (fr)
DE (1) DE69922324T2 (fr)
SE (1) SE511868C2 (fr)
WO (1) WO1999055424A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3442368B1 (fr) * 2016-04-14 2024-03-20 Special Projects Operations, Inc. Passage haute pression pour combinaison de protection

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2903609B1 (fr) * 2006-07-11 2008-10-03 Delta Production Sa Tenue ventilee avec distribution de fluide
FR2924576B1 (fr) * 2007-12-05 2010-01-01 Sperian Prot Clothing Scaphandre de protection alimente en gaz
FR2941624B1 (fr) * 2009-02-05 2012-05-18 Materiels Ind De Securite Dispositif de protection d'une personne et ensemble de protection correspondant.
WO2013166508A1 (fr) * 2012-05-04 2013-11-07 Microlin, Llc. Combinaison à hydrogène pour exposition cutanée
DE202018103159U1 (de) * 2018-06-06 2019-09-09 Tesimax-Altinger Gmbh Schutzanzug und Schutzanordnung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1241713B (de) * 1964-02-11 1967-06-01 Auergesellschaft Gmbh Mit Druckgas beluefteter Schutzanzug
DE3015584C2 (de) * 1980-04-23 1982-03-25 Drägerwerk AG, 2400 Lübeck Druckgasbelüfteter Schutzanzug mit Atemschutzgerät

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3442368B1 (fr) * 2016-04-14 2024-03-20 Special Projects Operations, Inc. Passage haute pression pour combinaison de protection

Also Published As

Publication number Publication date
DE69922324D1 (de) 2005-01-05
DE69922324T2 (de) 2005-11-24
WO1999055424A1 (fr) 1999-11-04
EP1007157A1 (fr) 2000-06-14
SE9801296D0 (sv) 1998-04-15
SE9801296L (sv) 1999-10-16
SE511868C2 (sv) 1999-12-06

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