RU205298U1 - PERSONAL RESPIRATORY PROTECTION - Google Patents

Abstract

The utility model refers to personal respiratory protection equipment (RPE) of a person and is intended for individual protection of the respiratory system, eyes, skin of the face and head of people from toxic products. The personal protective equipment of the human respiratory system contains a hood made in the form of a bag made of a transparent, non-flammable, gas-tight film, which ensures complete closure of the human head, a collar made of elastic material and an elastic cord with a lock in the neck area. According to the utility model, the transparent, non-flammable, gas-tight film is a transparent polyimide film, the hood has a hole that coincides with the hole in the half-mask, a half-mask for the mouth cavity made of a gas-tight elastic material, on which a filter-absorbing element is fixed by means of a cuff with an exhalation valve, a headband, fixed on the body of the filtering-absorbing element and the back of the hood, on which a belt loop is made through which the headband passes. The simplification of the design of the RPE is provided with a simultaneous increase in the safety of use, the reliability of protection, due to the additional isolation of the respiratory system from hazardous substances and ease of use. 2 c.p. f-ly, 2 dwg

Description

Technology area

The utility model refers to personal respiratory protection equipment (hereinafter RPE) of a person and is intended for individual protection of the respiratory system, eyes, skin of the face and head of people from toxic combustion products (including carbon monoxide), as well as from other hazardous chemicals in conditions of a polluted environment with harmful aerosols, vapors, gases during evacuation from: buildings, structures and objects of various purposes (residential, industrial, public use, educational, medical, railway and motor transport, subway, etc.) in case of fires, man-made accidents and terrorist attacks.

State of the art

It is known a means of personal protection of the respiratory organs of a person, containing an obturator of the oronasal cavity made of a gas-tight elastic material, on which the bodies of the valves for inhalation and exhalation and means for attaching filter-absorbing elements are fixed, a hood made in the form of a bag made of transparent, at least in the area of the eyes , a non-combustible, gas-tight film having holes for attachment to the obturator of the oronasal cavity, hermetically put on the bodies of the inhalation and exhalation valves, a headband that ensures a tight fit of the obturator of the ornasal cavity to the person's face. In this case, the headband contains an elastic band located inside the hood, each end of which is attached to one of the upper edges of the inelastic insert, which are connected to the top of the rear part of the hood. The lower end of the inelastic insert is attached to the hood at the neck level, and the second elastic band, which provides tension of the shutter in the direction from the mouth area below the ears to the neck, is located outside the hood (RU 124159 U1, 01/20/2013).

The disadvantages of this personal respiratory protection are:

- high pressure on the soft tissues of the face along the obturation line, due to the hardness of the material of the obturator of the oronasal cavity (more than 60 conventional units for Shore A), which is necessary to ensure reliable attachment of the valves and attachment means of filtering-absorbing elements to the obturator;

- the hard obturator of the oronasal cavity, when performing sharp movements of the head, can move from the optimal position of the obturation line, which will lead to depressurization and an increase in the intake of toxic substances into the breathing zone;

- attachment of filtering and absorbing elements (filters) directly to the rotonos obturator requires limiting the mass of the attached filters (no more than 200 g), which necessitates the use of at least two filters in the product.

It is known a means of personal protection of the respiratory organs of a person, containing an obturator of the oronasal cavity made of a gas-tight elastic material, on which the bodies of the valves for inhalation and exhalation and means for attaching filter-absorbing elements are fixed, a hood made in the form of a bag made of transparent, at least in the area of the eyes , a non-combustible, gas-tight film having holes that coincide with the holes in the shutter, hermetically put on the neck of the filter and the body of the inhalation and exhalation valves, a headband that ensures a snug fit of the oronasal cavity shutter to the person's face, containing an elastic band located inside the hood, each end of which is attached to one of the top edges of the non-elastic panel that ties into the top of the back of the hood. The lower end of the non-elastic insert is attached to the hood at the neck level, and the second elastic band, which provides tension to the shutter in the direction from the mouth area below the ears to the neck, is located outside the hood. In this case, the obturator of the oronasal cavity is placed in a solid frame with holes for attaching valves and a filter that coincide with the holes in the obturator, and the hood is attached to the frame using gaskets (RU 148461 U1, 10.12.2014).

The disadvantages of this personal respiratory protection are:

- limitation of the field of vision and insufficient protective properties of the hood, made in the form of a bag with a transparent insert in the eye area;

- an increase in the mass of the self-rescuer due to the complexity of the design.

The closest analogue (prototype) to the claimed device is the personal protective equipment of the human respiratory system "Phoenix", the design of which consists of a bag made of polyimide film with an elastic collar, a sealing neck cord, a mouthpiece and a nose clip (Found on the Internet 12/08/2020 , Internet site: http://siztorg.ru/fil'truyshie_samospasateli/feniks?yclid=73257657729834276

The disadvantages of the prototype of the claimed utility model, personal protective equipment for the respiratory system are:

- the use of a mouthpiece in the design of the Phoenix RPE, which provides discomfort to the user and is unsafe, which reduces the reliability of using the RPE. The discomfort is due to the fact that the user must squeeze the mouthpiece with his mouth (lips) when using it to access purified air, the location of the mouthpiece in the user's mouth excludes the possibility of the user giving any sound signals, which in a critical situation can exclude the possibility of calling for help, determining the location user of emergency services of rescue and assistance to him. Also, the location of the mouthpiece in the user's mouth without additional attachment to the user can lead to rupture of the bag film, for example, if the mouthpiece falls out of the user's mouth unintentionally, the mouthpiece will only hold due to the strength characteristics of the film of the bag in which it is mounted, if the permissible strength is exceeded. characteristics of the film, it can rupture, which will lead to the access of hazardous substances into the bag, as a result of their effect on the respiratory organs and mucous membranes of the eyes, which during evacuation can lead to death, in addition, during evacuation in conditions of insufficient visibility, the user of the RPE can fall, finding a foreign object (mouthpiece) in the user's mouth when falling, may lead to additional injuries;

- the use of a nose clip in the design of the Phoenix RPE also provides discomfort for the user and is unsafe, since this clip is a separate element of the RPE (not attached to it), which complicates the design of the Phoenix RPE as a whole, and can also lead to its loss when used in evacuation conditions (panic, smoke, etc.), the absence of a nose clip ensures the incorrect functioning of the Phoenix RPE and leads to fogging of the bag film from the inside, as well as the location of the nose clip over the film can lead to its rupture and the access of hazardous substances inside the bag, as a result of their effect on the respiratory organs and mucous membranes of the eyes.

Disclosure of the essence of the utility model

The problem to be solved by the claimed utility model is to create a RPE with eliminated prototype shortcomings.

The technical result achieved when using the claimed utility model is to increase the safety of use and the reliability of protection of the RPE from hazardous substances, due to the additional isolation of the respiratory system with a half mask.

The essence of the technical solution of the claimed utility model lies in the fact that the personal protective equipment of the human respiratory system contains a hood made in the form of a bag made of a transparent, non-combustible, gas-tight film, which ensures complete closure of the human head, a collar made of elastic material and an elastic cord with a retainer in the zone neck, while the transparent, non-combustible, gas-tight film is a transparent polyimide film, the hood has an opening that coincides with the opening in the half-mask, a half-mask for the oronasal cavity made of gas-tight elastic material, on which a filter-absorbing element is fixed using a cuff with an exhalation valve, a headband , fixed on the body of the filtering-absorbing element and the back of the hood, ensuring a snug fit of the half mask to the person's face, the headband is attached to the back of the hood by means of a belt loop made on it, through which the headband passes.

In this case, the half mask has zones with different material thickness.

The hood is made in the form of a bag made of transparent, non-flammable, gas-tight, durable polymer (polyimide) film and performs the following functions: completely covers the user's head and protects the eyes from toxic substances.

The hood has a hole that matches the hole in the half mask.

The half mask performs the following functions: provides isolation of the respiratory organs (mouth and nose) of a person from the external environment; provides air supply to the respiratory organs through the filter-absorbing element.

The presence of a half mask provides additional isolation of the respiratory system from hazardous substances, frees the user's mouth from holding the mouthpiece, which makes it possible to send sound signals by the mouth, reduces the risk of injury, due to the implementation of a half mask made of elastic material, as well as the absence of any elements in the user's mouth.

Also, the implementation of a half mask for the oronasal cavity ensures the operation of the RPE without the possibility of fogging the bag from the inside and the use of additional means for clamping the nose (for example, a nose clip).

A filter-absorbing element is attached to the half mask with the help of a cuff with an exhalation valve.

The exhalation valve is designed to release the air exhaled by a person at the time of exhalation and to prevent the entry of untreated air into the mouth and nose at the time of inhalation.

At the same time, the attachment of the filtering-absorbing element and the back of the head of the headband hood to the body ensures a snug fit of the half mask to the person's face, which is additional isolation of the respiratory system, and convenience of use is also provided due to the fact that when using the RPE, the user does not need to exert any force for fastening the half mask (except for the moment of putting on, and in comparison with the mouthpiece, which must be held constantly), the possibility of rupture of the film is excluded, because a half mask with a body of a filtering and absorbing element is fixed with a headband on the user's head, which also increases the safety of use and the reliability of respiratory protection.

The filtering-absorbing element contains an anti-aerosol filter for cleaning the inhaled air from solid and liquid aerosols and a combined charge for absorbing vapors and gases, which makes the RPE universal and provides comprehensive protection.

A collar made of elastic material and an elastic cord with a fastener ensure the obturation of the hood in the neck area.

The implementation of a half mask with zones with different material thicknesses ensures the most snug and comfortable fit to a person's face and reduces the risk of deformation of the half mask during storage.

Brief Description of Drawings

The essence of the proposed utility model is illustrated by the following description and the attached illustrations, which show:

in fig. 1 - the claimed means of personal protection of the respiratory organs of a person, side view;

in fig. 2 - the claimed personal respiratory protection device, front view, where:

1 - half mask;

2 - filtering and absorbing element;

3 - hood made of polyimide film;

4 - headband;

5 - valve;

6 - cuff;

7 - collar made of elastic material;

8 - elastic cord with a lock.

Implementation of the utility model

In the event of a hazardous situation, the user must leave the hazardous area, for this he must use the RPE, while the user takes the product out of the package, breaks the sealed bag. Then he inserts his hands into the hole of the elastic collar and, stretching it, carefully puts the RPE on the head with the filter-absorbing element forward, while straightening the half mask so that it tightly covers the nasolabial triangle of the face (mouth and nose). The headband is then extended to ensure the best fit of the half mask. After that, the ends of the sealing neck elastic cord are tightly tightened, avoiding items of clothing getting under it. The user must then quickly leave the danger area.

Thus, the claimed device provides a simplified design of the RPE with a simultaneous increase in the safety of use, reliability of protection, due to additional isolation of the respiratory system from hazardous substances and ease of use.

Claims (3)

1. The means of individual protection of the respiratory organs of a person contains a hood made in the form of a bag made of transparent, non-flammable, gas-tight film, which ensures complete closure of the human head, a collar made of elastic material and an elastic cord with a lock in the neck area, characterized in that it is transparent, non-flammable, the gas-tight film is a transparent polyimide film, the hood has a hole that coincides with the hole in the half-mask, a half-mask for the mouth cavity made of gas-tight elastic material, on which the filter-absorbing element is fixed by means of a cuff with an exhalation valve, a headband fixed on the filter-absorbing element body and the back of the hood, on which a belt loop is made through which the headband passes. 2. The means of individual protection of the respiratory organs of a person according to claim 1, characterized in that the half mask has zones with different material thicknesses. 3. The means of personal protection of the respiratory organs of a person according to claim 1, characterized in that the filtering-absorbing element contains an aerosol filter and a combined charge.

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