RU2561853C1 - Respirator - Google Patents

Abstract

FIELD: personal use articles.

SUBSTANCE: respirator comprises on a person's head the fastener with an air cleaning filter, a mask with check valve and sealing elements. The air cleaning filter is contained in the occipital part of the head. The respirator is provided with an air duct that connects the air cleaning filter with the mask. The mask is made in the form of a breathing bag. When air is inhaled from the breathing bag 5 the pressure in the bag is reduced, which reduces the volume of the latter. Simultaneously the breathing bag is filled through the air duct 6 with the air purified through the filter 3. After completion of inhalation the air pressures inside and outside the bag are balanced, the bag is straightened and continues to fill with purified air. The air exhaled from the lungs and mouth through the mouthpiece 10 and the valve 12 is removed outwards.

EFFECT: improvement of working conditions, improvement of the respirator performance, and simplification of its structure.

11 cl, 2 dwg

Description

The invention relates to filtering respiratory protective equipment and can be used in the field of labor protection of workers.

A known respirator for protection against harmful gases, vapors and aerosols, including a filtering and absorbing system from a package of elastic filtering and sorbing materials, in which the filtering and absorbing system is made in the form of a filtering mask, the housing of which is connected to glasses, an independent rubber seal and a rubber masker, while on the mask body in the frontal and chin parts are located two symmetrical folds, the width of each of which in the frontal part is 11 * 1% and in the chin 22 ± 1% of the perimeter of the body [ Pat. RF 2165780, IPC А62В 23/02, А62В 7/10, 2001].

The disadvantages of this respirator are:

- a relatively large resistance to air movement during inspiration, which makes breathing difficult, especially when performing heavy work;

- displacement of the center of gravity of the head forward, increasing the tension of the neck muscles during work;

- restriction of view due to the mask protruding beyond the surface of the face.

The prototype is an anti-dust helmet containing a helmet with a frame mount for a person’s head, a transparent visor, a fan located in a sealed housing, an air pre-filter installed at the intake air intake into the housing, a fine filter installed at the intake air outlet from the housing and located between the inner surface of the helmet and the frame mount, sealing elements for sealing the cavity formed between the person’s head, helmet and cm with a detachable shield, the case in which the fan is installed is fixed on the outer surface of the occipital part of the helmet, and a hole is made in the indicated part of the helmet for the communication of the body cavity with the fine filter cavity [RF Patent 2093222, IPC 6 А62В 18/04, 1997] .

The disadvantages of the prototype are:

- inconvenience in operation caused by the presence on the helmet of an electric motor, the vibration and noise of which will be heard in the head of a person, irritate him and quickly tire;

- the presence of wires suitable for a helmet for powering an electric motor, restricting human movement and capable of catching on foreign objects, which also causes inconvenience in work and reduces labor productivity.

- a possible overspending of clean air and unjustifiably accelerated failure of the filter elements in the event of a decrease in respiratory rate;

- design complexity due to the presence of an electric motor and a power source;

- the possibility of fogging the visor, causing inconvenience in operation.

The objective of the invention is to improve working conditions, increase the operational characteristics of the respirator and simplify its design.

The problem is solved in that the respirator containing a mount on the person’s head with an air purification filter on the occipital part of the mount, a mask with a check valve and sealing elements protecting the respiratory organs, is equipped with an air duct connecting the air purification filter with the mask, and the mask is made in the form of a respiratory bag.

Part of the duct is made in the form of a chin mount. The mask is made of filter material. The mask is made of heat-conducting material. The duct is made of heat-conducting material. Mounting on the chin is made at the same time with a check valve. Mounting on the chin is made in the form of a mouthpiece. The chin mount is made in the form of a mouthpiece with a check valve. In the mount on the chin, holes are made in the area of the oral cavity. The chin mount is made in the form of a mouthpiece applied to the lips. The mouthpiece is made of insulating material.

These distinctive features allow you to achieve the following advantages compared with the prototype.

Providing a respirator with an air duct connecting the air purification filter with the mask makes it possible to supply clean air under the mask, unlike the prototype, in which the air may be contaminated with sweat vapor from the sweating head. This improves a person’s working conditions.

The implementation of the mask in the form of a breathing bag reduces the resistance to air movement during inspiration, which improves working conditions and improves performance.

The implementation of the duct part in the form of a chin mount provides a more reliable fixation of the mount on the head, as well as other parts of the mouthpiece respirator and breathing bag, which increases operational characteristics.

Performing a mask of filter material increases the filtration area and, therefore, the amount of cleaned air per unit time. This, in turn, helps to reduce the size and mass of the filter located on the occipital part of the human head and, ultimately, reduces the redistribution of the center of gravity of the head. All this improves working conditions and increases the operational characteristics of the respirator.

The implementation of the mask of the heat-conducting material can reduce the temperature of the air between the mask and the face, which improves working conditions.

The implementation of the duct from a heat-conducting material lowers the temperature of the skin of the face, protecting it from excessive heat caused by a heat-insulating layer of still air between the face and the mask. In addition, excess heat generated by the body in the process of doing work is removed from the face and head. All this improves working conditions.

Mounting on the chin along with a check valve simplifies the design of the respirator.

The fastening on the chin in the form of a mouthpiece allows you to remove exhaled air directly outward along the shortest path, bypassing the mask with a breathing bag, without polluting clean air and creating a minimum of condensation on the elements that expel exhaled air. This improves working conditions and improves performance.

The mounting on the chin in the form of a mouthpiece with a check valve simplifies the design of the respirator.

Performing holes in the chin mount in the area of the oral cavity helps to increase the oxygen concentration near the respiratory organs when the exhaled air partially gets under the mask, for example, when the lips do not fit snugly to the mouthpiece when exhaling. This improves working conditions and improves performance.

Performing fastening on the chin in the form of a mouthpiece applied to the lips, suggests a more natural position of the lips and jaws in the process, which improves working conditions. In addition, it becomes possible to conduct a conversation by releasing most of the sound wave through the mouthpiece. This improves performance.

The implementation of the mouthpiece of the insulating material, firstly, allows it to remain warm inside, which reduces the condensation of moisture from the exhaled air. Secondly, the air exhaled through the mouthpiece decreases the heating of the space under the mask (air surrounding the face), which reduces sweat during work. All this improves a person’s working conditions.

The invention is illustrated by drawings.

In FIG. 1 shows a respirator. In FIG. 2 shows a respirator in section.

The respirator comprises a mount 2 mounted on the head of a person 1 with an air filter 3 installed in the housing 4, in communication with the cavity of the breathing bag 5 through the air duct 6 and channel 7 with holes 8 of the lining 9 on the chin, with a mouthpiece 10 mounted on it, one end of which has the possibility of interaction with the lips of 11 people, and the other is connected to the valve 12. One end of the breathing bag is fixed on the pad and the duct and covers part of the face in the area of the respiratory system, and the other can be attached to clothes in the g ore and neck, for example, using buttons or pins. The mouthpiece is passed through a gasket 13 mounted on a breathing bag. The duct at the same time can be a fastening of the housing with a pad. The breathing bag may be made of an airtight or filter cloth.

The respirator operates as follows.

When inhaled by the nose, air from the breathing bag 5 enters through the nasopharynx into the lungs, while the pressure in the bag decreases, which leads to a decrease in the volume of the latter due to outside pressure acting on it. As a result, the air pressure inside the bag rises and tends to atmospheric. This helps to reduce chest muscle tension, i.e. facilitates inspiration. At the same time, through the duct 6, the breathing bag is filled with air purified through the filter 3, as well as air passing through the fabric of the bag 5, if it is made filtering (Fig. 1, 2). After the inhalation is completed, the air pressure inside the bag and outside is balanced, the bag is straightened and continues to be filled with purified air. The air exhaled from the lungs and mouth through the mouthpiece 10 and valve 12 is removed to the outside. After this, the breathing process is repeated. If necessary, for example, during hard work, you can inhale by mouth, while air will enter the oral cavity through that part of the ajar lips 11 that is outside the mouthpiece 10. If the ducts 6 are made of heat-conducting material, they will cool the skin of the face and cooled, in turn, by external and purified air passing through the duct. The tissue of the respiratory bag can perform a similar function. As a result of this, the appearance of sweat on the face during the execution of work will decrease, which will significantly improve working conditions.

The implementation of the invention will allow you to create a simple design and easy to use respirator, the use of which will improve the working conditions of a person.

Claims (11)

  1. A respirator containing on the person’s head a mount with an air purification filter on the occipital part, a mask with a non-return valve and sealing elements protecting respiratory organs, characterized in that it is equipped with an air duct connecting the air purification filter with the mask, and the mask is made in the form respiratory bag. 2. The respirator according to claim 1, characterized in that part of the duct is made in the form of a chin mount. 3. The respirator according to claim 1, characterized in that the mask is made of filter material. 4. The respirator according to claim 1, characterized in that the mask is made of heat-conducting material. 5. The respirator according to claim 1, characterized in that the duct is made of heat-conducting material. 6. Respirator according to any one of paragraphs. 1, 2, characterized in that the mount on the chin is made integral with the check valve. 7. Respirator according to any one of paragraphs. 1, 2, characterized in that the mount on the chin is made in the form of a mouthpiece. 8. Respirator according to any one of paragraphs. 1, 2, characterized in that the chin mount is made in the form of a mouthpiece with a check valve. 9. Respirator according to any one of paragraphs. 1, 2, characterized in that in the mount on the chin holes are made in the area of the oral cavity. 10. Respirator according to any one of paragraphs. 1, 2, characterized in that the mount on the chin is made in the form of a mouthpiece applied to the lips. 11. Respirator according to any one of paragraphs. 1, 2, characterized in that the mount on the chin is made in the form of a mouthpiece of heat-insulating material.

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