RU181530U1 - ELECTRIC HEATING FABRIC PROTECTED FROM ELECTROMAGNETIC RADIATION - Google Patents

Abstract

The utility model relates to the textile industry, in particular to electric heating fabrics for industrial and domestic purposes, which have electric heating threads in their structure. The fabric provides protection against the negative effects of electromagnetic radiation on the human body, additional thermal protection against overcooling of users and equipment that have been exposed to low temperatures for a long time, and can be used in the manufacture of sports, tourism and military products. The essence of the utility model is that it is proposed a fabric representing a web made by weaving yarns and containing yarns having a first direction and heating yarns having a second strand an arrangement perpendicular to the first, which are made in the form of electrically conductive non-magnetic tubes, inside of which periodically magnetized elastic strands of magnetically hard material are fixed, and the gap between them is filled with elastic non-magnetic material or air. The filaments having a first direction are also heating, made in the form of electrically conductive non-magnetic tubes, inside of which periodically magnetized elastic filaments of magnetically hard material are fixed, and the gap between them is filled with elastic non-magnetic material or air, and have electrical contact at the point of contact with electrically conductive non-magnetic tubes heating threads having a second direction.

Description

The utility model relates to the textile industry, in particular to electric heating fabrics for industrial and domestic purposes, which have electric heating threads in their structure.

Known electric heating fabric (RF patent No. 55782, D03D 15/00, 08.27.2006). The fabric contains a weave of electrical insulating warp and weft threads and electrically conductive carbon threads. In this case, groups of parallel conductive threads of 2-3 warp threads, adjacent or woven through an electrical insulating thread, are interwoven weft with an array of conductive threads of material with high electrical conductivity, forming a current-carrying tape.

The disadvantage of this fabric is the complexity of the structure of the fabric and the complexity of its production, as well as the need for an electric current source to provide electrical heating.

Also known is electric heating fabric (RF patent No. 2212120, Н05В 3/34, 09/10/2003), which is a web made by interweaving threads and containing the main non-conductive threads having a first direction and conductive resistive threads having a second direction perpendicular to the first. The fabric also includes at least two main conductive busbars and distribution buses, separated from the conductive resistive wires by dielectric barriers of non-conductive threads of cotton or synthetic fiber, in which circuit breakers are located. Means for connecting current-carrying connecting wires are located in holes made in the main non-conductive threads. The main non-conductive filaments have a plain weave type with said non-conductive filaments. Electrically conductive resistive filaments, when an electric current flows through them, will heat up and therefore can be called heating.

The disadvantages of the analogue can be attributed to the need for an external source of electrical energy, which limits the heating time, and also increases the mass of the final product, for example, clothing from this fabric.

The closest to a utility model in terms of the number of similar essential features is electric heating fabric (RF patent No. 2599003, D03D 15/00, 10/10/2016). It is a web made by interweaving threads, and containing the main non-conductive non-heating filaments having a first direction, and heating filaments with electromagnetic heating having a second direction perpendicular to the first. The heating filaments are made in the form of electrically conductive non-magnetic tubes, inside of which periodically magnetized elastic filaments of hard magnetic material are fixed, and the gap between them is filled with elastic non-magnetic material or air.

The disadvantages of the prototype include the lack of human protection from the negative effects of electromagnetic radiation and the relatively low heating capacity of the tissue.

The objective of the invention is to expand the functionality of the fabric.

The technical result of the invention is to protect a person from the negative effects of external electromagnetic radiation and increase the heating ability of the tissue by creating closed electrical circuits formed by threads having first and second directions.

The problem is solved, and the technical result is achieved by the fact that the proposed fabric, which is a fabric made by interweaving threads, and containing threads having a first direction, and heating threads having a second direction perpendicular to the first, which are made in the form of electrically conductive non-magnetic tubes, inside which periodically magnetized elastic filaments of hard magnetic material are fixed, and the gap between them is filled with elastic non-magnetic material or air. According to the invention, the yarns having a first direction are also heating, made in the form of electrically conductive non-magnetic tubes, inside of which periodically magnetized elastic strands of magnetically hard material are fixed, and the gap between them is filled with elastic non-magnetic material or air, and have electrical contact at the point of contact with electrically conductive non-magnetic tubes of heating threads having a second direction.

The essence of the utility model is illustrated by drawings. In FIG. 1 shows an arrangement of heating threads with electromagnetic heating. In FIG. 2 shows a device of electric heating fabric with protection against electromagnetic radiation. In FIG. 3 shows the direction of induction currents in electric heating fabric with protection against electromagnetic radiation.

An electric heating fabric with protection against electromagnetic radiation contains heating filaments, which are tubular fibers 1, which are made in the form of electrically conductive non-magnetic tubes (Fig. 1). Inside these tubular fibers, threadlike permanent magnets 2 with a gap of 3 are placed, which are periodically magnetized elastic strands of hard magnetic material that are connected to the tubular fibers (Fig. 1). The gap between the threadlike permanent magnets and the tubular fibers is filled with elastic or elastic material or air (Fig. 1).

The inventive electric heating fabric, in contrast to the known electric heating fabrics, works with protection from the negative effects of electromagnetic radiation.

The heating of the heating threads with electromagnetic heating is as follows. Filamentous permanent magnets create a magnetic field whose lines of force cross the electrically conductive tubular fiber 1. During mechanical actions of a person, when walking and running, due to the inertia and elastic coupling of filamentous permanent magnets with tubular fibers, their relative oscillations occur. In general, relative vibrations can have a longitudinal and transverse component.

During oscillations, the lines of force of the magnetic field intersect the electrically conductive tubular fibers, due to which eddy currents (Foucault currents) arise in the latter. The direction of these currents is such that they counteract the relative motion of the threadlike permanent magnets and tubular fibers. The eddy currents are accompanied by heat in accordance with the Joule-Lenz law, leading to heating of the tubular fibers and the entire tissue layer.

In the area of the external electromagnetic field, in the circuits formed by threads having a first direction and heating threads having a second direction, induction EMF is induced and induction currents begin to flow, the magnitude of which is determined by the parameters of the external field and the circuit parameters (Fig. 2). According to the Lenz rule, induction currents are directed in such a way that their electromagnetic field compensates for the external field so that the fabric provides protection from external electromagnetic radiation (Fig. 3). The principle of operation is similar to the Faraday cage and electromagnetic screens ("Fundamentals of the theory of electromagnetic shielding", Shapiro DN, 2010)

Induction currents lead to additional heating of the tissue (Fig. 3). The amount of heat released, and, consequently, the heating temperature, is determined by the magnitude of the magnetic field induction, the amplitude and frequency of the relative oscillations, as well as the electrical resistance along their path.

The advantages of electric heating fabric with protection against electromagnetic radiation is that it allows you to expand the functionality, as it provides protection against the negative effects of electromagnetic radiation on the human body and increases the heating capacity of the tissue. The utility model improves the operational and technological quality of the fabric. It relates to the design of special types of fabric and can be used in the manufacture of clothing and accessories for extreme conditions characterized by low ambient temperatures.

Claims (1)

A fabric, which is a web made by interweaving threads, and containing threads having a first direction, and heating threads having a second direction perpendicular to the first, which are made in the form of electrically conductive non-magnetic tubes, inside of which periodically magnetized elastic threads of magnetically hard material are fixed, and the gap between them is filled with an elastic non-magnetic material or air, characterized in that the threads having a first direction are also heating and are made in the form of electric conductive non-magnetic tubes, inside which periodically magnetized elastic strands of magnetically hard material are fixed, and the gap between them is filled with elastic non-magnetic material or air, and have electrical contact at the point of contact with the electrically conductive non-magnetic tubes of the heating threads having a second direction.

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