RU49723U1 - INDIVIDUAL MEANS FOR PROTECTING CHILDREN - Google Patents

Abstract

The utility model relates to personal respiratory protection against toxic substances, radioactive dust, biological aerosols, accidentally chemically hazardous substances (acid gases and vapors, organic vapors, ammonia, hydrocyanic acid, etc.) and aerosols. Individual means for protecting children, including a jacket with a seal on the waist and wrists using rubber straps or cords with clips, an air overpressure valve located on the front wall of the hood in the area of the respiratory system, a connecting tube with an air flow diffuser, and a bag a backpack for placing an electric fan with a filter-absorbing box and an adjustable headrest. The proposed tool provides high protective properties (coefficient of suction less than 0.001%) when supplying purified air in an amount of 30-50 l / min in all climatic zones of the Russian Federation.

Description

The utility model relates to personal respiratory protection from toxic substances (0V), radioactive dust (RP), biological aerosols (BA), AXOV (acid gases and vapors, organic vapors, ammonia, hydrocyanic acid, etc.) and aerosols.

Known respiratory protective equipment [Patent No. 2247175, Great Britain, A62B 17/04, 02.26.1992] containing an elastic hood covering a person’s head, with a neck seal consisting of an elastic band and an elastic band or elastic partition, a filter, for example, for protection against 0V, RP and BA and a fan attached to the hood shell, a power supply for the fan located in a pocket on the back of the hood or in the case. Headphones may be included to protect your ears from fan noise.

The disadvantages of the known respiratory protection are:

- the complexity of operation in connection with the placement of an electric fan with a filter and current sources on a thin elastic shell of the hood, while the mass of components will put pressure on a person’s head, creating inconvenience during operation. In addition, the proposed design will reduce the field of view in the hood;

- the placement of the fan inside the hood is dangerous for humans and creates a high noise load on the hearing organs. In addition, the presence of a fan and current sources inside the hood impair its protective and operational performance;

- sealing the hood around the neck is dangerous to humans.

The closest in technical essence to the proposed individual tool is a protective hood CH14

[www.neoteric.com, USA], containing a protective hood made of transparent plastic compound, in front of which there is a panoramic window of frame polymer material, in the occipital region there is an overpressure valve, and in the upper part there is a headgear. The hood is sewn to a vest made of synthetic fabric, in the upper part of which there is an unstretchable cord with a device for adjusting its size, in the lower part there is an unstretchable braid with a detachable buckle to fix the vest on the body. Two pockets are sewn on the vest: one for a container of water for drinking, the other for an electric fan, which is connected to the hood using a connecting tube. The connecting tube is attached in the upper part of the vest in the center. In the side of the bag there is a hole for the screwed neck of the electric fan, into which the combined NP 8000 filter is screwed, which provides protection against 0V, RP and BA. Other types of filters may be used. The volume of air supplied to the hood is 70 l / min.

The disadvantages of the protective hood CH14 are:

1. The design of the hood does not guarantee the preservation of the tightness of the product during its use, and therefore, the preservation of the effectiveness of protection.

2. A large volume of supplied air (70 l / min) to the face can lead to hypothermia and even local frostbite at low ambient temperatures.

3. Placing the NP 8000 filter outside the vest pocket does not protect the filter from mechanical damage and creates additional inconvenience during operation.

4. The design of the headgear does not provide the possibility of regulating its size, which prevents the use of the hood by children with head sizes other than the size of the headgear.

The inventive utility model is aimed at creating an individual tool with improved operational and protective characteristics for protecting children.

The goal is achieved by the fact that:

1. An individual product includes a protective jacket-hood, which is sealed at the waist and wrists of the child’s hands with rubber straps or straps with clips to ensure that the product remains airtight. The proposed individual remedy provides a reduction in the concentration of harmful substances in the air by one thousand times. For example, at a concentration of chlorine vapor of 1000 mg / m ³ in the subcapsular space, its concentration is less than 1 mg / m ³ , which corresponds to the maximum permissible concentration. The proposed design of the jacket with sealing along the waist and wrists ensures the preservation of tightness, and therefore, the coefficient of suction during operation for 6-10 hours.

2. An overpressure valve is located on the front wall of the hood in the area of the respiratory organs and additionally provides for the removal of exhaled air from the hood, while performing the function of an exhalation valve.

3. The connecting tube is attached to the hood, while at the end of the tube there is an air flow diffuser that provides air in the area of the respiratory system to the inspection window, which prevents the child from being supercooling at low air temperatures.

4. A personal protective equipment includes a filter-absorbing box (FPK) with an electric fan that provides 30-50 l / min of purified air to the FPK. When the air supply is less than 30 l / min, air inlet in the hood is not ensured, as a result of which the coefficient of suction increases by one or two orders of magnitude and ranges from 0.01 to 0.1%. Increase

the volume of air supplied in excess of 50 l / min will lead to hypothermia of the child at lower air temperatures and even to frostbite at negative air temperatures.

5. Personal protective equipment includes a backpack bag for carrying a filter-absorbing box complete with a micro-electric fan. The proposed backpack bag provides an even distribution of the mass of the electric fan with a filter-absorbing box on the child’s body, providing ease of use and protection from mechanical damage.

6. Personal protective equipment includes a headgear for easy operation.

The proposed personal protective equipment is shown in the drawing. Figure 1 presents the image of the protection means front view, Figure 2 is a rear view. The protective equipment consists of a protective jacket-hood (1) with a panoramic window (2), a headgear (3), an overpressure valve (4), a connecting tube (5) with an air diffuser (6), sealing rubber straps or cords with clamps (7), a unit for supplying purified air, consisting of a filter-absorbing box (8) and an electric fan (9) placed in a backpack bag (10).

Personal protective equipment works as follows. A protective jacket-hood 1 is put on the child, then a backpack bag 10 with a filter-absorbing box 8 and an electric fan 9, to which a connecting pipe 5 with an air flow diffuser b is connected, an electric fan is turned on, and a protective jacket-hood is encapsulated around the waist and wrists 7 In this case, the air is drawn by the electric fan through a filter-absorbing box, where it is cleaned of 0V, RP, BA and AHOV, then it is fed into the connecting tube and the hood jacket, where it is scattered with the help of an air flow diffuser and 6. Excess air volume and

air exhaled by the child is removed through an overpressure valve 4.

Compared with the prototype, the proposed individual means for protecting children is made in the form of a jacket-hood, which provides a snug fit at the waist and wrists with rubber straps or cords with clips. The proposed design of a protective jacket-hood provides a coefficient of suction less than 0.001%. In order to reduce the carbon dioxide content in the hood, an overpressure valve is placed on the front wall of the hood in the area of the respiratory organs, which allows removing not only excess air from the hood, but also the air exhaled by the child. An individual protective equipment is equipped with an electric fan with a filter-absorbing box, which supplies purified air to the hood jacket in an amount of 30-50 l / min. The connecting tube ends with an air flow diffuser that provides air not to the child’s face, but to the viewing window, which, combined with a reduced volume of supplied air (30-50 l / min), avoids overcooling when operating an individual product in all climatic zones of the Russian Federation, negative air temperatures.

An individual tool kit includes a bag-backpack for placing a filter-absorbing box and an electric fan in it. The design of the backpack bag allows you to evenly distribute the pressure exerted on the child’s body, protect the electric fan and filter-absorbing box from mechanical damage and ensure ease of use. In order to improve operational characteristics, the individual tool is equipped with a headgear, additionally containing a detachable Velcro-type connection and a visor.

Prototypes of protective equipment have passed trial tests with the participation of preschool children. Revealed that protective

Hooded jackets are easy to put on, protective equipment is convenient to use, and provides a comfortable stay. According to the test results, individual means for protecting children are recommended for the manufacture of an experimental batch and tests in conjunction with the Civil Protection Department of the Ministry of Emergencies of Russia.

Claims (2)

1. An individual protective equipment comprising a protective hood with a panoramic window, an overpressure valve and a headgear, an electric fan, a filter-absorbing box and a connecting tube, characterized in that the protective device is made in the form of a hood jacket with sealing along the waist and wrists using rubber straps or cords with clamps, an overpressure valve is located on the front wall of the hood in the area of the respiratory system and the connecting tube is equipped with an air flow diffuser, electric fan the torus and filter-absorbing box are placed in a backpack bag worn on the back of the user, while the volume of air supplied is 30-50 l / min. 2. Personal protective equipment according to claim 1, characterized in that the headgear is provided with a detachable connection.