RU174767U1 - HEATED EVACUATION BAG - Google Patents

Abstract

The utility model relates to evacuation equipment, in particular, to devices for evacuating and transporting victims at low temperatures. A heated evacuation bag consists of an airtight flexible chamber, which is a bag of a multilayer reinforced film protective material, consisting of two interconnected parts: the upper and bottom, in the upper part of the bag there is a hinged lid equipped with Velkro fasteners located in several places, on the lid there is karma n for documents, on the outer side of the lower part of the bag, an reinforcing strip of base material is attached, four pairs of slings are located on the reinforcing strip, turning into handles with a reinforcing element in places of maximum load. On the inner surfaces of the upper and lower parts of the bag there is a small-sized power source and flexible heating elements made in the form of multi-layer electric heated mats made of dacron threads with resistive spraying of silver, located in the inner pockets of the upper and lower parts of the bag, and on the outside of the upper part the bag has a pocket for placing the control unit, the bag is equipped with straps for attaching the victim. The use of infrared heating helps to avoid electromagnetic radiation and has a positive tonic effect on the body.

Description

The utility model relates to evacuation equipment, in particular to devices for evacuating and transporting victims at low temperatures.

A device for transporting a victim is known (Patent SU No. 1524896, IPC A61G 1/00, published November 30, 1989) containing a stretcher on which, with the purpose of heating the victim during transportation by a vehicle, it is equipped with an envelope bag with straps for fastening it on a stretcher and an air duct made in the form of a casing and connected with the cavity of the envelope bag by means of a fine mesh installed in the area of the victim’s torso, while flexible longitudinal bars are placed in the casing, and the inner surface is covered that metallized film.

The disadvantage of this device is the need for additional equipment for heating and supplying warm air to the cavity of the envelope bag. The device does not provide uniformity for the warming up of the victim, as it is impossible to organize the normal circulation of warm air, as well as low performance properties.

Known medical heated stretchers (Patent RU No. 2569602, IPC A61G 1/00, published November 27, 2015) for the evacuation and transportation of victims, and are designed to heat a person in emergency, extreme and emergency situations, as well as to bring a person out of hypothermia and normalization of its thermal state during hypothermia. Heated medical stretchers, in which the main part of the stretcher and the heated blanket are equipped with flexible heating elements made in the form of multilayer electrically heated mats made of dacron threads with resistive silver sputtering, placed on the inner surface of the main part of the medical stretcher and inside the heated blanket. To increase the efficiency of the heating elements, the composition of the heated mats includes a reflective layer made of aluminum film by vacuum deposition.

The disadvantage of this device is the difficulty of operation if it is necessary to use a stretcher to evacuate victims from the battlefield at low temperatures, which requires additional equipment during transportation and maintenance of the victim.

The closest technical solution is a protective evacuation bag (Patent RU No. 106120, IPC АВВ 17/00, published July 10, 2011), consisting of an airtight flexible chamber, which is a bag of a multilayer reinforced film protective material (base material), consisting of two interconnected parts: the upper and lower, in the upper part of the bag there is a hinged lid equipped with a zipper, which is covered by stitched external and internal valves, the stitched external valve is equipped with fasteners “Velkro” type, located in several places, on the lid there is a panoramic viewing window and a document pocket, on the outside of the lower part of the bag there is a reinforced strip of base material ending in the end part (in the head area) of the pocket, some of which protrudes a bag in the form of a platform, the bag contains a device for cleaning and supplying air, placed on a rigid tablet and fixed by fasteners in the pocket and on the platform, four pairs of slings are located on the reinforcing strip, passing in handles having a reinforcing and damping element in places of maximum load, there is a pillow for the victim’s head inside the bag.

The disadvantage of this device is the difficulty of operation if it is necessary to use a stretcher to evacuate victims from the battlefield at low temperatures, which requires additional equipment during transportation and maintenance of the victim, it is not heated at low temperatures, which requires additional equipment during transportation and maintenance of the victim .

The objective of the proposed utility model is to create a device for the evacuation of victims on the battlefield during anti-terrorist operations. The transience of modern combat operations leads to a significant reduction in the time of evacuation of the wounded directly from the battlefield to a medical institution, which allows saving lives of soldiers with severe injuries.

The technical result is achieved in that in a protective evacuation bag, consisting of an airtight flexible chamber, which is a bag of a multilayer reinforced film protective material, consisting of two interconnected parts: the upper and lower, in the upper part of the bag there is a hinged lid equipped with fasteners of the type "Velkro", located in several places, on the lid there is a pocket for documents, on the outside of the bottom of the bag there is a reinforced strip made of base material, four pairs of slings are located in the reinforcing strip, turning into handles having a reinforcing element in places of maximum load, and on the inner surfaces of the upper and lower parts of the bag there is a small-sized power source and flexible heating elements made in the form of multilayer electric heated mats made of dacron threads with resistive spraying of silver placed in the inner pockets of the upper and lower parts of the bag, and on the outside of the upper part of the bag there is a pocket for premises of the heating control unit, the bag is equipped with straps to secure the victim. The use of infrared heating helps to avoid electromagnetic radiation and has a positive tonic effect on the body.

The use of flexible electric heaters in the form of electrically heated mats located in the inner pockets of the upper and lower parts of the bag located decentralized, i.e. with offset, which allows you to connect them stepwise. This provides a more effective heating of the victim, while you can separately heat the torso, pelvis or legs of the victim. The electric heating element of the device for heating the victim is made of dacron threads with resistive silver sputtering and is located in a multilayer mat connected by a current lead to a small-sized power supply equipped with a temperature sensor.

Electrically heated mats to protect the victim from cold are made of water- and frost-resistant material, which provides elasticity of the fiberglass material with an integrated thermal control and thermal shut-off system. Warm mats provide for the possibility of regulating the flow of heat to the surface of the body in order to avoid general and local overheating of the body. The surface of the human body should not be heated above 34 ° C. [Methodical recommendations MP 2.2.8.2127-06 '' Hygienic requirements for thermal insulation of a set of personal protective equipment against cold in various climatic regions and methods for its assessment ''].

A small-sized power supply is located on the inner surface of the bottom of the bag.

The maximum temperature of the heating element made of lavsan filaments with resistive silver deposition does not exceed 28-34 ° C, and in case of burnout of the electric wire in the heated mat, it does not ignite, which increases the fire safety of the device as a whole.

Heated mats made from dacron yarns with resistive silver plating have the following advantages:

- mechanical resistance and "superflexibility" - up to 150,000 bends per point, can be wrinkled, folded in any position, washed in a washing machine;

- products have successfully passed tests under extreme conditions (beyond the Arctic Circle);

- fast heating rate of the heat fiber - 1 ° C per second.

To regulate the heating of heated mats, heating elements can be connected stepwise and in groups, depending on the ambient temperature, which significantly reduces the energy cost of heating the victim and allows the maximum use of the thermal energy of electric heaters for heating.

Therefore, the claimed utility model meets the requirements of novelty.

The invention is illustrated in the drawings: FIG. 1 is a general view of a heated evacuation bag, FIG. 2 is a general view of the lower part of the heated evacuation bag, FIG. 3 is a general view of an electrically heated mat.

The heated evacuation bag contains an airtight flexible chamber, which is a bag 1 of a multilayer reinforced film protective material, consisting of two interconnected parts: the upper 2 and lower 3, in the upper part of the bag 2 there is a hinged cover 4 equipped with Velkro fasteners 5 located in several places, on the lid there is a pocket for documents 6, on the outside of the bottom of the bag there is a reinforced strip 7 made of base material, on the reinforcement strip there are Two pairs of slings 8, turning into handles 9, having a reinforcing element in places of maximum load. On the inner surfaces of the upper and lower parts of the bag there is a small-sized power source 10 and flexible heating elements made in the form of multilayer electric heated mats 11 made of dacron threads with resistive spraying of silver, placed in the inner pockets of the upper 2 and lower 3 parts of the bag, and the outer side of the upper part of the bag has a pocket for placing the control unit 12, the bag is equipped with straps for attaching the victim (not shown conditionally). The use of infrared heating helps to avoid electromagnetic radiation and has a positive tonic effect on the body.

On the inner surfaces of the upper and lower parts of the bag 1, heated mats 11 are fixed with heating elements provided with contacts (not shown in the drawing) and connected by a current lead to a power source 9 (lithium-ion polymer battery), fixed in the lower part of the bag 1 and a terminal (conditionally not shown) with a charger socket for connecting an external power source (vehicle, mobile power source), temperature sensors 13 are placed in heated mats 11 to maintain a given temperature ur heating when the victim is in the evacuation bag.

The electrically heated mats 11 are made of four layers arranged in the following sequence (from top to bottom) in accordance with FIG. 2:

- the first layer 1 - is designed for intensive heat transfer to the victim, and also provides a snug fit to the configuration of the body of the victim, taking into account the geometric shape of the body, a sufficiently thin part of the first layer of the multi-layer heated mat provides minimal thermal clearance;

the second layer 2 is a layer with placed heating elements, which can be connected stepwise and in groups. The heating temperature of the heating elements depends on the density of the current flowing through the heating wires, which is directly related to the magnitude of the electric voltage supplied to specially formed current-carrying buses (not shown in the figure), previously applied to the material layer. By setting the magnitude of the supply voltage, it is possible to regulate the heat release of the heating wires, and hence their temperature;

third layer 3 - a protective insulating layer is designed to give rigidity, flexibility, bending strength and moisture resistance, with low thermal conductivity and high permeability to thermal radiation;

fourth layer 4 - a reflective layer is placed on the back of the heated mat. The reflective surface of the reflective layer is directly coupled to the material of the insulating layer, for example, by applying a metal foil to the insulating layer by vacuum evaporation. This layer is designed to reduce heat transfer from the heating element to the external environment with the placement of a ground loop along its perimeter (not shown in the figure).

The properties of each of the layers of electrically heated mat 11 in the aggregate can provide the claimed technical result.

Electrically heated mat 11 can be made in the form of an integral product.

Heated evacuation bag for evacuation and transportation of the victim at low temperatures works as follows.

An airtight flexible chamber, which is a bag 1 of a multilayer reinforced film protective material, consisting of two interconnected parts: upper 2 and lower 3, is laid out horizontally on the ground. On the control unit 12, the “Heating” button is turned on, within 10-15 minutes the temperature of the inner surface of the upper 2 and lower 3 parts reaches at least 40 ° C, i.e. the internal volume of the bag 1 is warmed up.

The hinged lid 4 opens, equipped with Velkro-type fasteners 5 located in several places of the evacuation bag. The victim is laid on the lower part 3 of bag 1, securing it with straps to secure the victim. The victim from above is closed by the upper part 2 of bag 1, the hinged lid 4 is fixed by Velkro fasteners 5 located in several places of the evacuation bag 1.

Multilayer electric heated mats 11, made of dacron threads with a resistive silver coating, located in the inner pockets of the upper 2 and lower 3 parts of the bag 1, are heated from a small-sized power source 9 (lithium-ion polymer battery), which is pre-charged using a charger from a network of 220 V through the terminal (conditionally not shown). After turning on the electrically heated mats, the heating does not work continuously, but only if necessary, this is important for the proper blood circulation in the victim. The operation algorithm of electrically heated mats 11 is as follows: the temperature sensor 13 integrated into the electronic components of the second layer activates the heating system when the temperature reaches 34 ° C, the control unit 12 switches off the heating by the signal of the temperature sensor 13, then the heated mats gradually cool down and give their heat to the injured; if the temperature drops to 28 ° C, the control unit 12 at the signal of the temperature sensor 13 generates a signal to turn on the heating of the bag 1, the cycle repeats. Thus, comfortable and healthy temperature conditions are provided for the victim, and the operating time of the lithium-ion polymer battery 10 is extended. The victim is heated in the torso, pelvis and legs, which usually freeze.

All the technical components that ensure the operation of the heated evacuation bag are reliably covered by protective insulating layers, so using a heated evacuation bag is absolutely safe.

The time of continuous operation of a heated evacuation bag without recharging is from 2 to 8 hours - it depends on the external ambient temperature. The heated evacuation bag uses high-quality 900 mAh lithium-ion polymer batteries with no memory effect, which cannot be damaged by frequent charging and are designed for approximately 500 charge / discharge cycles.

The heated evacuation bag is able to work not only from the built-in lithium-ion polymer battery, but also from any, including autonomous current sources, in particular from any car battery, as well as from a 12-15 V DC portable battery . The use of a heated evacuation bag is possible, for example, on long trips in car bodies or in any specially unheated cabins of other vehicles. At the same time, the problems with the electric capacity of current sources are greatly simplified, since energy-consuming automobile batteries (with running generators) can always be used as a current source, and in this case there is no need to think about energy savings during generator operation.

When using a heated evacuation bag in inhabited premises, there is no need to use autonomous power sources for heating, since it is quite acceptable and advisable to use various kinds of DC and AC chargers that are widely used in everyday life. The electrical parameters of these universal devices of the “ADAPTOR” type are quite acceptable for the operation of a heated evacuation bag, they are reliable, small-sized and suitable for all their electrical parameters, they are powered by 220 V AC, i.e. from the city electric network.

The total time of continuous operation of the heated evacuation bag is determined by the electric capacity of the current source used. For example, a current source having an electric capacity of 2 Ah, at a discharge current of 200 mA, is able to heat the victim (generate heat) continuously for 7-8 or more hours.

The temperature of heating of lavsan filaments with resistive silver deposition depends on the current density flowing through the conductive layer of lavsan filaments with resistive silver deposition, which is directly related to the magnitude of the electric voltage supplied to specially formed current-carrying tires previously applied to the main part of the heating mats.

The technical and economic efficiency of the heated evacuation bag during the evacuation of the victim lies in the fact that the use of dacron threads with resistive silver spraying can reduce the geometric dimensions of the heating mats, provide better thermal contact between the heating layers and the victim and, accordingly, increase the efficiency of heat transfer from the heating element.

Technical result: quick and reliable heating of a heated evacuation bag, as well as heating the victim to a predetermined temperature, as well as a more complete and efficient use of the heat generated by the heating elements, the efficiency increases, which allows the maximum use of the thermal energy of electric heaters to heat the victim as a whole.

Claims (1)

Heated evacuation bag, consisting of an airtight flexible chamber, which is a bag of multilayer reinforced film protective material, consisting of two interconnected parts: the upper and lower, in the upper part of the bag there is a hinged lid equipped with Velkro fasteners located in several places, on the lid there is a pocket for documents, on the outside of the bottom of the bag there is a reinforced strip of base material sewn in, four are located on the reinforcement strip arena lines, turning into handles, having a reinforcing element in places of maximum load, characterized in that on the inner surfaces of the upper and lower parts of the bag there are small-sized power sources and flexible heating elements made in the form of multi-layer electric heated mats made of dacron threads with resistive by spraying silver placed in the inner pockets of the upper and lower parts of the bag, and on the outside of the upper part of the bag there is a pocket for accommodating the control unit lazy, the bag is equipped with straps to secure the victim.

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