EP1007157B1 - Valve unit of a totally protective clothing - Google Patents
Valve unit of a totally protective clothing Download PDFInfo
- 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
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Images
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)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Pulmonology (AREA)
- Toxicology (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Description
Claims (4)
- Valve unit, preferably for air, intended for connection to a compressed air ventilated, totally protective clothing with control devices for adjustment of different defined volumes of air flows, to pass as flushing air through the clothing, and possibility to simultaneous connection of breathing air for the carrier of the clothing, from external as well as internal air source, charac-terized therein, that a sealed, and through the clothing passing valve housing (13), comprising inlets- and control devices (4, 15, 16, 48, ---, and 12, 33, 19, 28, ---), respectively and outlet arrangements (6, 8,10,42, 44, 7, 11, ---), are sealingly attached on the clothing wall (1a, 1b) to a distributing cover (26) sealed and located on the internal wall side (1b) of the clothing and containing the valve housing (13) that is sealed by O-shaped rings, and that a chamber (17), lateral to the valve housing (13), receives air through therein ending transfer channel (16) from a hose coupling (15) arranged outside of the clothing, and that a displaceable spindle (28), arranged in the valve housing (13), with its end directed towards the chamber (17), in an initial stage, is bearing on an O-shaped ring-sealed (first) seat (S1, position L0 ), and is shutting out ventilation air from communication into the clothing, and that the opposite end (29) of the spindle (28) constantly is bearing on a cam profile (20), during its displacement operations, and dependent of the adjustment of a knob (19), said cam profile (20) gives specific, distinctive positions (L0, L2, L30, L150/L100 ; according to Fig. 5), and that it by bored holes (24) in the valve housing (13), co-operating with a spring loaded positioning ball (23), hereby allows different increasing flow volumes to pass clearly exposed different wide flow passages in a valve spindle housing (25), when the spindle(28) moves from the (first)seat (S1), and that parallel to the longitudinal direction of the valve spindle housing (25) a nozzle provided longitudinal channel (37) is bored in the valve spindle (28), and that via a nozzle A2 an air flow volume, passing there is 2 litres per minute in a first opening position, and that the flow volume of air, in a second next following opening position will increase to 30 litres per minute, and that at a further displacement of the spindle (28), an end position is achieved, then in the valve spindle housing (25) a passage, more wide, and by O-shaped ring being sealed, is clearly exposed, creating a 5 times larger flow volume than what the other spindle position has made possible, that the flow volumes of 2 litres per minute and 30 litres per minute at their passages, respectively into the channel (37), will pass a bore (46), arranged perpendicular to and passing through the longitudinal channel (37),that the perpendicular bore, at the flow volumes mentioned, is in communication with a bore hole (50) in the valve housing (13) ending towards nozzle-shaped opening (49) arranged into the longitudinal channel (37), while on the passage of that mentioned larger flow volume, it will pass a second seat S3 sealed by an O-shaped ring, and flows into a further channel (42), which is nozzle provied, and initially can hold a nozzle (D1) for 150 litres per minute of ventilation air, alternatively a screwed in throttle nozzle (D2) for 100 litres per minute, whereby the opening of the further channel (42) is ending in the distributing cover (26) from where, by two circular, wide and open distributing channels (44a, 44b), the air leaves the distributing cover (26) via each an angle tee piece, with connected ventilation hoses (11, 11 ), whereby the distributing channels (44a, 44b) by their orientations of 180° between them create equal distribution of adjusted volumes of the ventilation flows into the free space (14) of the protective clothing.
- Valve unit according to claim 1, characterized therein, that an air volume having a pressure of 7.5 bars and coming from an external air source (2a), passes the inlet opening via a connecting hose (4) and a non-return valve (15) integrated with a hose coupling and further through the transfer channel (16) into the chamber (17) and out from a chamber opening (51) and a communicating second transfer channel (52),to make possible an internal connection of breathing air in the clothing by means of the outlet device, comprising a hose (6), an angled tee piece (5) and a feeding hose (8) of a breathing mask (10), at closed, sealed position of the spindle (28) against the first seat (S1), as well as at the mentioned chosen ventilation positions (L2, L30 and at L150), or at an alternative throttle position (L100).
- Valve unit according to claim 1 or 2, characterized therein, that in the hose coupling (15) there exists a non-return valve being integrated therein and co-operating with the connecting transfer channel (16) and the chamber (17), when pressure reduction appears in the chamber (17), at open first seat (S1).
- Application of valve unit and its means of connection according to any or some of the previous claims characterized therein, that in emergency/escape situations for the carrier of the clothing, of type hose rupture on external hose (4), the non-return valve integrated in the hose coupling (15) prevents penetration of contaminated air through the transfer channel (16) and the chamber (17), simultaneously as pressure reduction appears in the chamber (17), and thereby also in the longitudinal channel (37) of the spindle (28) at open first seat (S1), resulting in the fact that a throttling of ventilation air takes place, and makes it possible for the carrier of the clothing by himself, by means of the manoeuvering of the cam knob (19), to achieve a final sealing of ventilation air in that the spindle (28) then is moving back to the first seat (S1), whereby internal air from a compressed air container (2b) automatically, or manually, as breathing air quickly can be connected in by way of known pressure sensing valve (33) and pressure controlling valve (12) and through the angle tee piece (5), connected to the outgoing interiour hose (6) and associated hose coupling, attached to the valve housing part (18), whereby passage of breathing air takes place by means of the feeding hose (8) to the breathing mask/breathing valve (10) of the carrier.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9801296A SE511868C2 (en) | 1998-04-15 | 1998-04-15 | Valve unit and use of the same |
SE9801296 | 1998-04-15 | ||
PCT/SE1999/000585 WO1999055424A1 (en) | 1998-04-15 | 1999-04-12 | Valve unit of a totally protective clothing |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1007157A1 EP1007157A1 (en) | 2000-06-14 |
EP1007157B1 true EP1007157B1 (en) | 2004-12-01 |
Family
ID=20410953
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99918421A Expired - Lifetime EP1007157B1 (en) | 1998-04-15 | 1999-04-12 | Valve unit of a totally protective clothing |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1007157B1 (en) |
DE (1) | DE69922324T2 (en) |
SE (1) | SE511868C2 (en) |
WO (1) | WO1999055424A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3442368B1 (en) * | 2016-04-14 | 2024-03-20 | Special Projects Operations, Inc. | High-pressure passthrough for protective suit |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2903609B1 (en) * | 2006-07-11 | 2008-10-03 | Delta Production Sa | VENTILATED HOLD WITH FLUID DISTRIBUTION |
FR2924576B1 (en) * | 2007-12-05 | 2010-01-01 | Sperian Prot Clothing | PROTECTIVE SCAFFOLD SUPPLIED WITH GAS |
FR2941624B1 (en) * | 2009-02-05 | 2012-05-18 | Materiels Ind De Securite | DEVICE FOR PROTECTING A PERSON AND CORRESPONDING PROTECTION ASSEMBLY. |
WO2013166508A1 (en) * | 2012-05-04 | 2013-11-07 | Microlin, Llc. | Hydrogen suit for skin exposure |
DE202018103159U1 (en) * | 2018-06-06 | 2019-09-09 | Tesimax-Altinger Gmbh | Protective suit and protection arrangement |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1241713B (en) * | 1964-02-11 | 1967-06-01 | Auergesellschaft Gmbh | Protective suit ventilated with compressed gas |
DE3015584C2 (en) * | 1980-04-23 | 1982-03-25 | Drägerwerk AG, 2400 Lübeck | Pressurized gas-ventilated protective suit with breathing apparatus |
-
1998
- 1998-04-15 SE SE9801296A patent/SE511868C2/en not_active IP Right Cessation
-
1999
- 1999-04-12 DE DE69922324T patent/DE69922324T2/en not_active Expired - Lifetime
- 1999-04-12 WO PCT/SE1999/000585 patent/WO1999055424A1/en active IP Right Grant
- 1999-04-12 EP EP99918421A patent/EP1007157B1/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3442368B1 (en) * | 2016-04-14 | 2024-03-20 | Special Projects Operations, Inc. | High-pressure passthrough for protective suit |
Also Published As
Publication number | Publication date |
---|---|
DE69922324D1 (en) | 2005-01-05 |
DE69922324T2 (en) | 2005-11-24 |
SE9801296D0 (en) | 1998-04-15 |
SE511868C2 (en) | 1999-12-06 |
WO1999055424A1 (en) | 1999-11-04 |
EP1007157A1 (en) | 2000-06-14 |
SE9801296L (en) | 1999-10-16 |
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