RU17257U1 - INDIVIDUAL PROTECTION DEVICE FOR REDUCED TEMPERATURES - Google Patents

Description

The utility model relates to personal protective equipment against hypothermia at low ambient temperatures and can be used in the manufacture of protective suits designed for long-term conditions of a person at low temperatures (underwater work, mountain climbing. Far North, etc.).

To assess the novelty and inventive step of the claimed solution, we consider a number of well-known technical means of a similar purpose.

A device for protecting respiratory organs, the neck and face from low temperatures, consisting of a stand-collar and a chest element, which is characterized in that it has a pocket with a valve with a discharge unit and

heating air with ducts that are located in the channels of the multi-layer stand-collar, see the patent of the Russian Federation No. 2048782, A41D 23/00.

The disadvantage of this device is the difficulty of implementation and the inability to protect other parts of the body.

A device for protecting against cold is known, which is a special suit with a duct system, a heating element and an electric fan that supplies warm air to various parts of the body, see UK patent No. 2069320, A41D13 / 00.

The disadvantage of this device is the need for an external energy source, which complicates and increases the cost of its design, and also requires periodic replacement of the energy source.

A device for personal protection against low temperatures, comprising a housing made of a material with low thermal conductivity, in which an opening is made for inhaling and exhaling, as well as a means for utilizing heat of exhaled air in the form of a heat exchanger made of a material with high thermal conductivity and placed inside the housing, moreover, the side walls of the heat exchanger are connected to the housing, see the patent of the Russian Federation No. 2045301, А62В18 / 00.

This device is completely autonomous, as it uses the heat exhaled by a person to air, which heats the heat exchanger located near the respiratory system and transfers this heat to the inhaled air.

The disadvantages of this device are: low efficiency due to double heat transfer; as well as very limited functionality, since it allows you to protect only the human respiratory system.

A device for personal protection from low temperatures, including a means for utilizing heat of exhaled air, is made in the form of an airway, the inlet of which is located near the human mouth, and the outlet is near body parts most exposed to low temperature, see US patent No. 3229681, A41D 13/00.

This technical solution is selected for the prototype of this utility model.

The disadvantage of the prototype is the fact that to obtain additional heat, chemical reactions are used, as a result of which hydrogen and alkalis appear, in particular caustic soda. Hydrogen with atmospheric oxygen forms, as you know, a highly explosive "explosive mixture; sodium hydroxide

may cause burns to the respiratory tract, skin and mucous membranes.

The basis of this utility model is the solution to the problem of creating a safe, simple and reliable device for protecting various parts of the human body from low temperatures using thermal energy of exhaled air.

According to the utility model, the aforementioned problem is solved due to the fact that in the device for personal protection from low temperatures, including means for utilizing heat of exhaled air, made in the form of an air duct, the inlet part of which is located near the person’s mouth, and the outlet part is near the heat areas, most exposed to low temperature output

the airway is equipped with a section having increased aerodynamic drag; the airway can be placed in channels made in special clothing designed for a long stay in the open air at low temperatures; the air duct can be made of a material with low thermal conductivity.

The applicant has not identified sources containing information about technical solutions identical to this utility model, which allows us to conclude that it meets the criterion of “novelty.

The essence of the utility model is illustrated by drawings, on which:

- figure 1 is a General view of the claimed device;

- figure 2 is a General view of the claimed device with a protective

a mask;

-FIG. - a General view of the claimed device with

air duct having the main

air duct and several of its sleeves.

The device for personal protection from low temperatures contains a means for utilization of heat of exhaled air, which is made in the form of an airway 1, the inlet of which is located near the person’s mouth, and its outlet part is located near body parts most exposed to low temperature.

The inlet of the air duct 1 may be provided with a check valve 2. The outlet of the air duct 1 is provided with a portion 3 having increased aerodynamic drag. Airway 1

can be made in the form of a main duct 4, equipped with several sleeves 5, combined at the entrance to a single junction box 6. The air duct 1 can be equipped with a dehumidifier 7 of air, absorbing moisture. The airway 1 can be placed in channels made in special clothing designed for a long stay in the open air at low temperatures. Ducts can be placed under outer clothing, and their ends can be located at the most cooled parts of the body.

The device can be equipped with a mask 8, for example, a gas mask having a valve 9 inhalation and valve 10 exhale air, while the inlet of the airway 1 is connected to the outlet pipe of the mask 8.

The device is used as follows.

At a low ambient temperature, a person begins to exhale air into the airway 1. The air exhaled by a person passes through the main duct 4 and several of its arms 5 and enters the parts of the body most exposed to low temperature. Due to the presence in the highway 1 site with high aerodynamic drag, exhaled air

compresses, and its temperature rises further by 2-4 ° C depending on the degree of compression. Thus, it is possible to continue working or finding a person for a long time in the open air. Air ducts can be made of a material with a low coefficient of thermal conductivity, which reduces the heat loss of exhaled air.

The proposed device can be manufactured industrially from known materials using well-known technologies and technical means, which determines, according to the applicant, its compliance with the criterion of "industrial applicability.

Claims (3)

1. The device of personal protection from low temperatures, including means for utilization of heat of exhaled air, made in the form of an air duct, the inlet of which is located near the person’s mouth, and the output part is near the areas of the body most exposed to low temperature, characterized in that the output part of the airway is equipped with a section having increased aerodynamic drag.  2. The device according to p. 1, characterized in that the airway is placed in the channels made in special clothing designed for a long stay in the open air at low temperatures. 3. The device according to claims 1 and 2, characterized in that the airway is made of a material with low thermal conductivity.