RU15285U1 - PROTECTIVE HOOD - Google Patents

Description

Protective hood

This utility model relates to special protective clothing that can be used to protect eyes, respiratory organs, skin from exposure to smoke, harmful gases, heat fluxes, combustion products, etc.

A heat-resistant protective hood in the form of a helmet made of a two-layer polymer material based on polyimide is known (RU, 2057558, Cl, 1996). A disadvantage of the known product is the low capacity of the material for combustion products, i.e. low degree of protection.

Known hood made of flexible material, equipped with a filter cartridge with several types of adsorbents and a mouthpiece for ease of use (WO, 92/21408, A1, 1992).

However, the known hood has a complex structure and a large mass due to the use of a filter cartridge.

The closest in technical essence is the design of the protective hood in the form of a bag of flexible transparent heat-resistant material with a neck part made of stretchable material and a multilayer sorption-filter insert located in the area of the user's respiratory organs, containing a layer of heat-resistant fibrous material, a layer of anti-aerosol material, a layer for CO conversion in

MPK7A62V17 / o4

CO2, a layer for sorption of other combustion products, and possibly a hygienic layer. (GB, 2,129,670, A, 1984).

A disadvantage of the known hood is the inconvenience of use due to its considerable weight and bulky design, as well as the inconvenience of transportation and storage, which complicates its use by the general population as an individual protective tool in case of possible accidents and environmental disasters. As you know, the current stage of development of society is inextricably linked with the danger of technological disasters, for example, fires of one scale or another, which is why individual means of pinching (at least for a limited time before leaving the affected area) of the organs of vision, respiration and skin cover. It is preferable that such tools are always with the user, and therefore, they should be as compact as possible, lightweight and easy to operate. As follows from the analysis of the prior art, known means of the same purpose do not have the listed properties.

The objective of this utility model is to improve the design and ensure comfort in use while ensuring ease of transportation and storage due to its light weight and compactness when folded.

The problem is solved by the described protective hood, made in the form of a bag of flexible transparent heat-resistant material with a multilayer sorption-filter insert placed in it in the region of the respiratory organs of the user, containing at least one layer of fibrous heat-resistant material and a hygienic layer, and the hood is equipped with a mouthpiece installed at the level of the user's mouth and a flexible spacer installed between the insert and the flexible, transparent bag material to form Lost between them.

Additionally, the hood can be equipped with an elastic stretch collar that improves the sealing of the internal cavity of the bag, as well as a check valve, which allows to reduce the concentration of carbon dioxide in the cavity between the insert and the bag material.

In addition, the insert may further comprise layers of materials sorbing organic substances and / or materials sorbing nitrogen oxides and / or cyanides.

In FIG. 1 shows a drawing of a hood assembly (section);

Figure 2 shows a sorption insert with a cut along the mouthpiece;

Fig. 3 shows a general view of the hood (front view).

The protective hood made according to the utility model

which in the area of the estimated location of the user's respiratory organs (not shown in the drawing) is placed (for example, glued) a multilayer sorption-filter insert 2 containing at least one layer 3 (Fig. 2) of fibrous heat-resistant material, one layer 4 of antiaerosol material , a hygienic layer 5, facing the inside of the hood directly to the mouth of the user and designed to trap mechanical particles and fibers that can enter the mouth of the user when breathing from the previous layers. Additionally, the insert can be equipped with a layer 6 of fibrous material with catalytically active centers for the conversion of CO to COi, as well as a layer 7 that sorb organic substances, cyanides, nitrogen oxides (not shown in the drawing). The hood is equipped with a mouthpiece 8 made of elastic material and intended to be inserted into the mouth of the user, on which recesses 9 are made, for example, a circular groove designed to fix the mouthpiece 8 between the teeth of the user. The mouthpiece 8 can be secured to the insert 2 by pinching the bag material between the mouthpiece 10 of the mouthpiece and the locking ring I. Between the flanging 10 and the recesses 9 there is a mouthpiece 12, mainly oval, oriented in the horizontal direction — along the mouth of the user and designed to seal the cavity mouth last. At the end of the mouthpiece 8, facing the insert 2, longitudinal springing

in the form of paws located, as indicated, with gaps on the periphery of the mouthpiece 8, in contact with the inner surface of the layer 5 of the insert 2 and intended to form an internal cavity between the said layers of the insert 2 and the mouthpiece 8. A spacer element is placed between the insert 2 and the material of the bag 1 (or several elements) 14, made, for example, in the form of a volume cord or tube of elastic material, and also intended to form the aforementioned internal cavity. To reduce the concentration of exhaled CO2 in the inner cavity of the bag 1, in the area of the insert 2, a shaved valve 15 can be fixed (Fig. 3), which directly communicates the cavity with the atmosphere during exhalation. An elastic (rubber) collar 16 is attached to the bottom of the bag 1 (for example, glued), fixing the hood on the consumer’s head.

The use of the hood is as follows. In case of danger, for example, a room fire, the user must open the sealed package, remove and straighten the hood, insert the hands into the inner cavity of the bag 1, then stretch the rubber collar 16 and put the hood on the head, while positioning the sorption filter insert 2 at the level respiratory tract. After that, the user takes the mouthpiece 8 in his mouth, placing his teeth in the recess 9. When breathing, the spacer element 14 and springy longitudinal protrusions

the mouthpiece 8 and the material of the bag 1, ensuring the passage of filtered air through the entire area of the insert 2, which reduces the resistance and increases the filtration efficiency.

The proposed protective hood can be used in various emergency situations, especially it is effective as a protective tool in case of fire.

Thus, the claimed utility model has a high compact weight, low weight, while at the same time providing ease of use and easy breathing along with highly effective protection, which makes it possible to use this hood as an individual protective tool in case of fire, etc.

Claims (8)

1. A protective hood made in the form of a bag of flexible, transparent heat-resistant material with a multilayer sorption-filter insert placed in it in the region of the user's respiratory organs, containing at least one layer of fibrous heat-resistant material, one layer of anti-aerosol material and a hygienic layer facing the respiratory system of the user, characterized in that the hood is equipped with a mouthpiece mounted at the level of the user's mouth and a flexible spacer element installed between the insert and rachnym bag material to form a cavity.  2. The protective hood according to claim 1, characterized in that it is equipped with an elastic stretch collar.  3. The protective hood according to claim 1, characterized in that it is equipped with a check valve mounted on the material of the bag or on the sorption-filter insert. 4. The protective hood according to claim 1, characterized in that the insert further comprises a layer of fibrous material with catalytically active centers for the conversion of CO to CO ₂ .  5. The protective hood according to claim 1, characterized in that the insert further comprises layers sorbing organic substances, cyanides, nitrogen oxides.  6. The protective hood according to claim 1, characterized in that the mouthpiece is equipped with an oval mouthpiece oriented in the horizontal direction.  7. The protective hood according to claim 1, characterized in that the recess is designed on the mouthpiece to accommodate the user's teeth. 8. The protective hood according to claim 1, characterized in that at the end of the mouthpiece there are formed longitudinal springy discontinuous in the circumferential direction protrusions intended for contacting with the inner layer of the sorption-filter insert.