DE102015006826A1 - Escape hood device - Google Patents

Abstract

The invention relates to an escape hood device (1) having an escape hood (10) in a protective cover (50), the escape hood (10) having a flexible hood (11) with an integrated, flexible viewing window (12) and a filter (20), the filter (20) having a filter inlet opening (15) disposed on the outside (17) of the flexible hood (11) and having a filter outlet opening (16) opening into the interior (18) of the flexible hood (11) wherein the protective sheath (50) is connected to at least one filter plug (21, 22), and wherein the one or more filter plugs (21, 22) are removably inserted into the filter (20) and block the activation of the filter (20).

Description

The invention relates to an escape hood device according to claim 1.

An escape hood or fire escape hood is a protective cover of coated fabric, z. B. plastic-coated textiles, or flame retardant plastic, each with a flexible integrated viewing window and an integrated into the escape hood (multi-range) filter. The escape hood is carried over the head and used mainly by the fire department in smoky areas, eg. B. in burning buildings.

The filter prevents the penetration of toxic fire products (gases, vapors, soot) and also carbon monoxide inside the escape hood, which are released in a fire and can lead to fatal smoke gas poisoning. The protective effect against carbon monoxide (CO) is achieved by a catalytic filter, in particular hopkalite, which catalyzes the oxidation of CO with atmospheric oxygen to CO ₂ . The escape hood is thus a circulating air-dependent respiratory protection device (escape filter device), which filters out toxic gases from the air.

Unlike air-operated breathing apparatus, an escape hood does not protect against lack of oxygen in the ambient air. However, there are also escape hoods to which an SCBA can optionally be connected. Due to the overpressure generated in the escape hood, it does not have to be completely closed to the carrier. This also makes it possible to provide a person to be rescued with fresh air.

Typically, the escape hoods are carried along packed and only when necessary unpacked and set. Packaging of cardboard or cardboard, barrier bags and vacuum packaging made of aluminum are known in the prior art. The so-packaged escape hoods are accommodated in a (belt) holster, so they can be carried comfortably.

A disadvantage of the use of cardboard or cardboard is that they are damaged in contact with moisture. Frequently, the customer disposes of the escape hood after a single contact with water for fear of mold growth. Moreover, carton packaging does not provide adequate protection against the ingress of dust and soot. Another disadvantage is the large volume and rigid geometry of the carton.

A problem with the barrier bags, in particular the vacuum packaging made of aluminum, is that no visual inspection of the escape hood is possible without destroying the packaging. Injuries of the barrier bag are often detected late. As a result, if the barrier bag suffers damage, the filter will be damaged, so that full or no filter performance will be available in an emergency. For one thing, the filter interacts with gases, so it works as a filter. On the other hand, the filter material accumulates with moisture, which reduces its performance. In order to determine damage, it is made in practice with a test of the water vapor permeability of the barrier bag, z. B. by weighing. However, this is technically complicated and expensive.

The object of the invention is therefore to provide an escape hood device with an escape hood in a protective cover, wherein the protective cover reliably packs the escape hood to their use, and wherein a simple examination of the escape hood is possible. The escape hood device should be compact, lightweight, soft and inexpensive. In addition, the escape hood in an emergency should be as comfortable, intuitive and fast as possible.

Main features of the invention are specified in the characterizing part of claim 1. Embodiments are the subject of claims 2 to 12.

In an escape hood device with an escape hood in a protective cover, wherein the escape hood has a flexible hood with an integrated, flexible viewing window and a filter, the filter having a filter inlet opening, which is arranged on the outside of the flexible hood, and having a filter outlet opening, the opens into the interior of the flexible hood, the invention provides that the protective cover is connected to at least one filter plug, wherein the one or more filter plug are inserted into the filter and extractable block the activation of the filter.

The advantage of this is that even with damage to the protective cover, the filter performance does not decrease. This is reliably prevented by the filter plug. Blocking the activation of the filter is to be understood to mean the prevention of any degradation in the performance of the filter, which is due to active filtering processes or chemical filtering reactions. It is thus achieved a functional separation between a protection against dust and moisture of the entire escape hood through the protective cover and a protection of the filter through the filter plug. The filter plugs should release the activation of the catalyst when it is pulled, especially when they are pulled out of the filter. Elaborate checks for damage in the protective cover to check the filter condition can be omitted. Furthermore, the flexible hood should be made of a coated fabric, eg. B. off plastic-coated textiles, or flame retardant plastic. These materials are lightweight and can be stowed compact.

By connecting the protective cover with the filter plug or the filter is achieved that the latter can be pulled out during removal from the protective cover without additional handles. Thus, a variant of the escape hood device also provides that the filter plug (s) release the activation of the filter when the escape hood is pulled out of the protective cover. Accordingly succeeds a simple and intuitive operation with a degree of automatic activation of the filter during removal from the protective cover. At the same time the connection and thus the escape hood device as such are inexpensive to produce.

According to a further embodiment of the escape hood device, it is provided that the one or more filter plugs seal the filter inlet opening and the filter outlet opening in a gastight manner. This filter media located inside the filter are protected from external influences, in particular against air and liquid inlet.

Particularly preferred is an embodiment of the escape hood device, wherein two filter plugs are provided, wherein one of the filter plug is arranged in the filter inlet opening, which forms a plug seat for this filter plug, and wherein said filter plug is pulled out towards the outside of the flexible hood, and wherein the other filter plug is arranged in the filter outlet opening, which forms a plug seat for this filter plug, and wherein said filter plug in the direction of the inside of the flexible hood is pulled out. This specifies simple and intuitive pull directions. Packed the escape hood is preferably in the protective cover, that the neck opening is arranged radially around the filter. Thus, the inner valve plug is free when removing and can be easily removed.

The filter plugs should each be connected to the protective cover with a drawstring. Preferably, a tension band is longer than the other, so that only one of the valve plug is pulled out and then, in particular after manual alignment of the pulling direction, the second valve plug. Catching the valve plug in the hood is thus prevented. In addition, the reduction to a few, in particular a single, pulling direction for pulling out the valve plug is comfortable to use.

A particularly simple removal of the plug succeeds if one or both valve plugs on the outside has a flat plastic plate as a fastening means to which the tension band is attached. As a result, the lever arm is larger in order to release the valve plug from the plug seat. In addition, the plastic plate can be used as a handle even with gloves to attack the valve plug directly and pull out.

Preferably, the filter plug are disc-shaped and formed with circumferential groove. This results in a flat, compact structure. The plastic plates can be arranged flat on the filter housing.

In a special embodiment of the escape hood device, the filter has a catalyst and the filter plug or filters block activation of the catalyst. Catalysts are particularly sensitive and lose their filter performance on contact with air. In addition, catalysts saturate with moisture, which can dramatically reduce filter performance.

In an optional variant, the catalyst is a hopcalite. Thus, the conversion of toxic carbon monoxide (CO) to relatively harmless carbon dioxide (CO ₂ ) by (air) oxygen (O ₂ ) by oxidation is possible. Hopkalite is the name given to mixed catalysts, which consist in particular of manganese dioxide and copper (II) oxide. In addition, they may contain other metal oxides, such as cobalt oxides and silver (I) oxide. Compositions are, for example, 60% MnO ₂ /40% CuO or 50% MnO ₂ /30% CuO / 15% CoO and 5% Ag ₂ O. In addition, hopkalites catalyze the oxidation of various organic compounds at elevated temperature (200-500 ° C).

The filter or the catalyst is preferably designed to be exchangeable. As a result, the escape hood after a use or expiration of the minimum durability cost can be set back to a functional state.

Optionally, the filter may have a particulate filter. This prevents the inhalation of dirt and soot particles. In order to protect an optional catalyst as well, it is advisable to upstream the particle filter from the outside to the inside of the flexible hood of the catalyst. In particular, the particulate filter may have a filter paper. As a construction suitable as a particulate filter, especially ring filter.

Furthermore, a more detailed embodiment of the escape hood device provides that the protective cover is connected to the filter plug or plugs via at least one tension band. The drawstring allows the user to recognize the pulling direction on the valve plug and to pull in the optimum direction on the valve plug. In addition, a removal of the escape hood from the protective cover and a packaging the escape hood with the protective cover allows comfortable, which makes the production or a filter change easy. The tension band is preferably made of TPU (Desmopan).

In order for the protective cover to be tightly closed, the connection between the protective cover and the filter plug or plugs should lie inside the protective cover.

A particularly long-lasting and dense protection of the filter is achieved in a special embodiment, according to which the filter plug or the filter consists essentially or completely of butyl. In particular, penetration of moisture is particularly well prevented with butyl stoppers. In this way, a minimum shelf life of 6-8 years can be achieved.

In a special design of the escape hood device, the protective cover is a flexible protective bag. Such a one is compact, lightweight and adapts to the content and the environment. Accordingly caused no pressure pain and is not damaged even when force from the outside.

Preferably, the protective cover is welded. This makes it particularly tight against dust particles and moisture.

According to a special embodiment, the protective cover is a plastic cover, preferably on a film basis. Plastic sleeves prevent particularly good and permanent penetration of dust particles and moisture.

In order to enable a visual inspection of the escape hood, it is provided in a special variant of the escape hood device that the protective cover is transparent.

Furthermore, it is provided in a more detailed embodiment that the protective cover has a pressure compensation valve. This pressure equalization is possible and the protective cover does not inflate and does not burst at high temperatures. For this purpose, the pressure compensation valve should be a one-way valve, which allows a discharge of a fluid, in particular of gas, from the protective cover. Preferably, the pressure compensation valve is a pressure relief valve. As a result, pressure equalization takes place only above a defined pressure, and the overpressure valve particularly reliably prevents unwanted influx of gas or moisture into the protective cover.

A supplement to the escape hood device provides that the escape hood with the protective cover is removably arranged in a refractory holster. The holster protects the protective cover and the escape hood inside from flames. In addition, it allows a comfortable carrying the escape hood in the protective cover. Preferably, the holster protects the protective cover from contact with sharp objects in particular. For this purpose, the holster preferably consists essentially of nylon. According to a special embodiment, the holster has a closable receiving space for the escape hood in the protective cover. Thus, the protective cover is protected all around and the escape hood can not fall out of the holster.

In a further embodiment, the escape hood has an inner mask which can be placed over the mouth and nose and is airtight, the filter opening out via the filter outlet opening and through the inner mask. With the inner mask, the position of the escape hood can be found correctly. In addition, the breathing air is supplied directly via the filter. Easy entry of gases into the escape hood is not critical. A comfortable breathing in long use time is achieved when the inner mask has an exhalation valve. This should especially pass the filter. This does not overcome the air resistance of the filter when exhaling. In addition, the filtering performance of the filter is not reduced by the exhaled air. To prevent carbon dioxide from accumulating inside the escape hood, the exhalation valve should open out on the outside of the flexible hood.

In order for the escape hood to be packaged compactly, to conform to the wearer's head and to channel the breathing air, the inner mask should have a rubber layer. A high wearing comfort is achieved, if additionally a fabric layer is provided.

Furthermore, the handling of the escape hood is particularly easy if an elastic banding is provided. This should in particular communicate with the inner mask and pass behind the head. Another elastic banding is preferably provided in the neck area to prevent ingress of smoke and soot. If the harness is designed as an inner harness, it is protected inside the escape hood from external influences such as heat.

Another optional supplement to the escape hood can be a compressed air connection that opens into the flexible hood. When a SCBA is connected, there is an overpressure in the escape hood and it does not have to be completely closed to the carrier. This also makes it possible to provide a person to be rescued with fresh air. For this purpose, the compressed air connection should in particular open into the inner mask. Preferably, in the compressed air connection a Pressure relief valve arranged so that nothing can penetrate when no SCBA is connected.

Further features, details and advantages of the invention will become apparent from the wording of the claims and from the following description of exemplary embodiments with reference to the drawings. Show it:

1 a schematic side view of an escape hood, which is just removed from a protective cover;

2 a side view of an escape hood with partial sections;

3 a frontal view of an escape hood;

4 a frontal view of a filter; and

5 a schematic representation of an escape hood device, in which an escape hood is arranged in a protective cover.

In 1 is an escape hood device in a schematic side view 1 to see. An escape hood 10 is in half removed position relative to a protective cover 50 shown. The escape hood device 1 So has an escape hood 10 on, the original or in a storage condition in the protective case shown 50 was arranged (see this 5 ), as shown 1 but pulled out of this. The escape hood 10 is partially still folded. With the exception of this arrangement difference, the description applies to 1 also for 5 ,

In addition, the removed and unfolded escape hood 10 in the 2 and 3 shown in more detail, namely in 2 in a side view with partial cuts and in 3 in a frontal view. For the 2 and 3 Therefore, the comments apply to 1 which the escape hood 10 concern, accordingly.

According to the 1 . 2 . 3 . 5 has the escape hood 10 via a flexible hood 11 with an integrated, flexible viewing window 12 and a filter 20 ,

4 shows a frontal view of the filter 20 and the comments too 1 indicating the marked characteristics of the filter 20 apply accordingly 4 ,

As in the 1 . 2 . 3 . 4 . 5 can be seen, the filter has 20 a filter inlet opening 15 on the outside 17 the flexible hood 11 is arranged, and a filter outlet opening 16 (only in 1 and 2 to see) inside 18 the flexible hood 11 flows (cf. 2 ). The filter inlet opening 15 and filter outlet 16 are in particular in a filter housing 23 formed in which a catalyst 19 is arranged. With the catalyst 19 it is a hopcalite. In addition, the filter contains 20 a particle filter 14 with a filter paper. This is designed as a ring filter.

The particle filter 14 is from the direction of the outside 17 inside 18 the flexible hood 11 the catalyst 19 upstream.

The flexible hood 11 according to the 1 . 2 . 3 . 5 consists of either a coated fabric, e.g. As plastic-coated textiles, or flame retardant plastic. In the flexible hood 11 is an elastic banding 32 incorporated (cf. 2 ). With this can the escape hood 11 be placed firmly on the head so that the mouth, nose and eyes are correctly relative to the escape hood 11 are positioned. Another elastic bandage 33 is after the 2 . 3 . 5 around a neck opening 13 in the flexible hood 11 intended. The bands 32 . 33 are each designed as Innenbänderung, ie they are protected from flames on the inside of the flexible hood 11 ,

In particular in 2 you realize that the escape hood 10 an interior mask 30 has, which is over mouth and nose attachable and airtight. The filter opens 20 over the filter outlet 16 and through the inner mask 30 inside 18 the escape hood 10 out. The inner mask 30 has an airtight rubber layer as well. a fabric layer on. At least one harness 32 is on the inner mask 30 determined and led around behind the head area (see 2 ).

In addition, the inner mask points 30 after the 1 . 2 . 3 and 5 an exhalation valve 31 on, on the filter 20 passes and on the outside 17 the flexible hood 11 opens. In particular, the exhalation valve 31 in normal upright posture of the wearer geodetically down. Accumulating liquid can be drained in this way.

The filter inlet opening 15 forms a plug seat 24 for a filter plug 21 out. This filter plug 21 is towards the outside 17 the flexible hood 11 pulled out. After the 1 and 2 forms the filter outlet opening 16 a stuffed seat 25 for a second filter plug 22 out. The second filter plug 22 is in the direction of the interior 18 the flexible hood 11 pulled out. In this position, the two filter plugs lock 21 . 22 the activation of the filter 20 , in particular the catalyst 19 by placing the filter inlet opening 15 and the filter outlet 16 seal gas-tight. For this purpose there are the filter plugs 21 . 22 from butyl.

How to be in partial section in 1 sees are the filter plugs 21 . 22 each disc-shaped and formed with circumferential groove. This results in a flat, compact structure. On the outside are the filter plugs 21 . 22 each with a fastener 26 . 27 on which a drawstring 51 . 52 is attached, and which is designed as a flat, round plastic plate. These plastic plates extend flat over the filter housing 23 ,

After the 1 and 5 are the drawstrings 51 . 52 with the protective cover 50 connected. To 1 is a drawstring 52 longer than the other drawstring 51 , so first the valve plug 21 with the shorter drawstring 51 is pulled out and then, in particular after manual alignment of the pulling direction, the second valve plug 22 ,

How to get into the 1 . 5 recognizes, is the protective cover 50 over the two drawstrings 51 . 52 each with a filter plug 21 . 22 connected. In the starting position to 5 is the connection between the protective cover 50 and the filter plug 21 . 22 namely the drawstrings 51 . 52 , inside the protective cover 50 , The drawstrings 51 . 52 are according to 1 so long that the escape hood 10 completely out of the protective cover 50 can be pulled without the drawstrings 51 . 52 be charged train.

If you pull the escape hood 10 as they are in 1 is shown further from the protective cover 50 out or away, the filter becomes 20 activated by means of the drawstrings 51 . 52 at the filter plug 21 . 22 is pulled until these are out of their respective stuffer seat 24 . 25 are removed. They then hang on the protective cover 50 and can be left behind on site.

At the protective cover 50 after the 1 and 5 each is a flexible protective bag. This consists of transparent plastic or transparent plastic film and is after 5 welded and after 1 opened, for which a tear-open 54 is provided (see 5 ). In the protective cover 50 is a pressure balance valve 53 integrated, the outflow of a fluid, in particular of gas, from the protective cover 50 allowed. In particular, it is a one-way and a pressure relief valve. It should be noted that the protective cover after 5 can also be made significantly smaller. This would be the flexible parts of the escape hood 10 to merge more strongly.

The invention is not limited to one of the above-described embodiments, but can be modified in many ways.

So can among other things the escape hood 10 with the protective cover 50 be removably mounted in a refractory holster. This holster may be equipped with a belt attachment means, e.g. B. a belt loop or a clip. Preferably, the holster consists essentially of nylon. The holster should form a closable receiving space for the escape hood in the protective cover.

All of the claims, the description and the drawings resulting features and advantages, including design details, spatial arrangements and method steps may be essential to the invention both in itself and in various combinations.

LIST OF REFERENCE NUMBERS

1

Escape hood device

10

escape hood

11

flexible hood

12

window

13

neck opening

14

particulate Filter

15

Filter input opening

16

Filter output opening

17

Outside (hood)

18

Inside (hood)

19

catalyst

20

filter

21

filter plug

22

filter plug

23

filter housing

24

plug seat

25

plug seat

26

fastener

27

fastener

30

inner mask

31

exhalation valve

32

Banding (head)

33

Bandage (neck)

50

cover

51

tieback

52

tieback

53

Pressure equalization valve

54

Einreißecke

Claims (12)

Escape hood device ( 1 ) with an escape hood ( 10 ) in a protective cover ( 50 ), whereby the escape hood ( 10 ) a flexible hood ( 11 ) with an integrated, flexible viewing window ( 12 ) and a filter ( 20 ), wherein the filter ( 20 ) one Filter inlet opening ( 15 ), which on the outside ( 17 ) of the flexible hood ( 11 ), and a filter exit port ( 16 ) inside ( 18 ) of the flexible hood ( 11 ), characterized in that the protective cover ( 50 ) with at least one filter plug ( 21 . 22 ), wherein the filter plug or plugs ( 21 . 22 ) can be pulled out into the filter ( 20 ) and the activation of the filter ( 20 ) lock. Escape hood device ( 1 ) according to claim 1, characterized in that the filter plug or plugs ( 21 . 22 ) the activation of the filter ( 20 ) when the escape hood ( 10 ) from the protective cover ( 50 ) is pulled. Escape hood device ( 1 ) according to one of claims 1 or 2, characterized in that the filter plug or plugs ( 21 . 22 ) the filter inlet opening ( 15 ) and the filter outlet ( 16 ) seal gas-tight. Escape hood device ( 1 ) according to one of the preceding claims, characterized in that two filter plugs ( 21 . 22 ) are provided, wherein one of the filter plug ( 21 ) in the filter inlet opening ( 15 ) arranged for this filter plug ( 21 ) a plug seat ( 25 ) and this filter plug ( 21 ) towards the outside ( 17 ) of the flexible hood ( 11 ) and wherein the other filter plug ( 22 ) in the filter outlet ( 26 ) arranged for this filter plug ( 22 ) a plug seat ( 26 ) and this filter plug ( 22 ) towards the interior ( 18 ) of the flexible hood ( 11 ) is removable. Escape hood device ( 1 ) according to one of the preceding claims, characterized in that the protective cover ( 50 ) via at least one drawstring ( 51 ) with the filter plug or plugs ( 21 . 22 ) connected is. Escape hood device ( 1 ) according to one of the preceding claims, characterized in that the connection between the protective cover ( 50 ) and the filter plug (s) ( 21 . 22 ) inside the protective cover ( 50 ) lies. Escape hood device ( 1 ) according to one of the preceding claims, characterized in that the filter plug or plugs ( 21 . 22 ) consist essentially or completely of butyl. Escape hood device ( 1 ) according to one of the preceding claims, characterized in that the protective cover ( 50 ) is a flexible protective bag. Escape hood device ( 1 ) according to one of the preceding claims, characterized in that the protective cover ( 50 ) is a plastic shell. Escape hood device ( 1 ) according to one of the preceding claims, characterized in that the protective cover ( 50 ) is transparent. Escape hood device ( 1 ) according to one of the preceding claims, characterized in that the protective cover ( 50 ) a pressure compensation valve ( 53 ) having. Escape hood device ( 1 ) according to one of the preceding claims, characterized in that the escape hood ( 10 ) with the protective cover ( 50 ) is removably disposed in a refractory holster.

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