KR20100128150A - Plate type heating element capable of shielding electronic field and magnetic field - Google Patents

Abstract

PURPOSE: A plate type heating element capable of shielding electronic field and magnetic field is provided to shield electromagnetic wave by applying power to a plurality of carbon heating elements through formation of a nonwoven layer. CONSTITUTION: A first carbon heating element(110) comprises a first electrode receiving plus power and a second electrode receiving the first electrode and minus power. A second carbon heating element(120) comprises a first electrode receiving minus power and a second electrode receiving plus power. A bonding layer(130) is formed in the carbon heating element or the single-side and both sides of a second heating element. An insulating layer(140) is comprised of meatier having heat-resistance higher than the heating temperature of the first carbon heating carbon element and the second carbon heating element.

Description

Plate type heating element capable of shielding the electromagnetic field {Plate type heating element capable of shielding electronic field and magnetic field}

The present invention relates to a planar heating element having an electromagnetic shielding function, and more particularly, a plurality of heating elements using carbon as a heating source, and applying power to different electrodes to each of the heating elements, thereby canceling the electric field generated in the heating element. It relates to a planar heating element having an electromagnetic shielding function, so as to be able to shield the electric field through a structure wrapped with a non-woven fabric on the outside.

In general, the planar heating element is used to the electric blanket, bed or heat treatment device to utilize the collision of the electric charge through the heating element by using the unique characteristics of the heating element.

Such planar heating elements can be classified into metal heating elements such as nichrome, copper alloy and aluminum, and nonmetal heating elements using carbon materials. The heating element which uses carbon as a heating source is manufactured by coating carbon on the surface of a fiber or film by precipitation or printing method, or weaving the carbon yarn with a regular interval of weft yarn and a conductive yarn with a constant interval slope.

The heating element, which uses carbon as a heating source, emits air pollution and noise, and emits far infrared rays that are hygienic and beneficial to the human body, and are used for heat treatment, health sauna, clothing, bedding, construction heating materials, freezing snow, road, agricultural and fishery drying, It is widely used in pig farming, livestock raising, chemical plant, pipe insulation tape of gas carrier and next-generation residential heating materials.

On the other hand, in using a heating element, first, copper wires, which are power lines, are provided on both sides, and carbon fiber or carbon powder is provided between the power lines on both sides, thereby generating heat by resistance generated from carbon fiber or carbon powder by applying a current to the power lines. It is becoming.

The planar heating element that generates heat by this action generates a magnetic field and an electronic field that are harmful to the human body due to physical or electrical characteristics that generate heat by using a collision of charges.

Therefore, in order to block such magnetic and electromagnetic fields, shielding agents such as separate shielding fibers, silver foil, and gold foil are used to remove harmful harmful electromagnetic waves by grounding or induction, but they do not provide any evidence of blocking electromagnetic waves. There was a problem that a lot of manufacturing costs.

In addition, conventional planar heating elements often use expensive metal copper plates to block water waves generated by underground water flowing in the ground, but the copper plates are oxidized and corroded when moisture is present, which causes harmful rust to the human body. have.

An object of the present invention for solving the above-mentioned problems is to configure a plurality of heating elements that use carbon as a heating source, by applying power of different electrodes to each heating element, so that the electric field generated in the heating element is canceled, The present invention provides a planar heating element having an electromagnetic shielding function, which can shield an electric field through a structure wrapped with a nonwoven fabric.

The planar heating element having an electromagnetic shielding function according to the present invention for achieving the above object is formed by weaving carbon fibers, has a first electrode and a second electrode, a positive (+) power is applied to the first electrode A first carbon heating element to which a negative power is applied to the second electrode; A second carbon heating element which is formed by weaving carbon fibers, has a first electrode and a second electrode, a negative power is applied to the first electrode, and a positive power is applied to the second electrode; An adhesive layer having a heat resistance temperature equal to or greater than an exothermic temperature of the first carbon heating element or the second carbon heating element, and formed on one or both surfaces of the first carbon heating element or the second carbon heating element; An insulating layer composed of a material having a heat resistance higher than an exothermic temperature of the first carbon heating element or the second carbon heating element, and insulating such that tensile force is not directly transmitted to the first carbon heating element or the second carbon heating element; And shielding the electric field by combining a ceramic component with a germanium component, a carbon component, and a polyester component in a proportion to shield an electric field generated when power is applied to the first carbon heating element or the second carbon heating element. Layer.

In addition, a first insulating layer and a second insulating layer are respectively attached to both surfaces of the first carbon heating element through an adhesive layer, and the second carbon heating element is attached to one side of the second insulating layer, and the second carbon heating element is attached. The third insulating layer is attached to one side of the through the other adhesive layer, the shielding layer is formed on the other side of the first insulating layer and the other side of the third insulating layer.

In addition, the insulation layer is composed of a thermoplastic resin (PET) having a heat resistance higher than the heat generating temperature of the carbon fiber body, the front end insulation is integrally coupled to the first carbon heating element or the second carbon heating element by the adhesive layer. layer; And a thermoplastic resin having heat resistance less than the exothermic temperature of the first carbon heating element or the second carbon heating element, even when thermal deformation occurs due to heat generation of the first carbon heating element or the second carbon heating element. And a rear end insulating layer covering the front end insulating layer so as not to be in contact with the first carbon heating element or the second carbon heating element so that the tensile force is not directly transmitted to the carbon heating element or the carbon fiber of the second carbon heating element.

The first carbon heating element or the second carbon heating element may include a weft yarn in which a plurality of carbon fibers and insulating heat resistant fibers are alternately formed; A warp made of insulating heat resistant fiber and woven with the weft yarn; And a conductive material extending along the inclination to continuously contact the plurality of carbon fibers, the plurality of conductive materials being disposed at a spaced interval apart from each other in the extending direction of the carbon fibers.

In addition, the front end insulating layer is coated and cooled to a thickness of 0.012 mm or more and 0.016 mm or less on the second insulating layer to be integrally connected to the rear end insulating layer.

In addition, the tip insulating layer has a film shape having a thickness capable of implementing flexibility in a state of being integrally coupled with the second insulating layer and the first carbon heating element.

The front end insulating layer is formed of a mixture of a phenol resin and polyvinyl butyl al having a heat resistance of 200 ° C. or higher, and has a heat resistance temperature of 200 ° C. or higher, and an adhesive formed on one surface of the rear end insulating layer. Is bonded to.

In addition, the adhesive layer is configured by mixing a phenol resin and polyvinyl butyral having a heat resistance temperature of 200 ℃ or more to achieve a heat resistance of 200 ℃ or more.

The front end insulating layer is formed of a thermoplastic resin having a heat resistance temperature of 200 ° C. or higher including polyethylene terephthalate (PET), and the rear end insulating layer has a heat resistance temperature of less than 200 ° C. including polyvinyl chloride (PVC). It is composed of a thermoplastic resin having a.

According to the present invention, as the powers of different electrodes are applied to the plurality of carbon heating elements, the magnetic fields in different directions are canceled out, thereby preventing the magnetic field from being generated from the surface heating element.

In addition, the electromagnetic wave generated by applying power to the plurality of carbon heating elements is not only blocked through the nonwoven fabric layer, but also has an effect of blocking the water wave through the nonwoven fabric layer.

In addition, even when the insulating material is thermally deformed, it is possible to stably prevent the tensile force from being transferred to the carbon heating element due to the heat resistance performance of the insulating layer.

In addition, even when formed into a thin film shape, it does not elongate or expand and deform even at room temperature, and does not apply excessive tensile force to the carbon fiber even at a high temperature exothermic operation of 100 ° C. or more, thereby preventing the exothermic efficiency of the carbon heating element or the lifetime of the carbon heating element. can do.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a structural diagram showing a main section of a planar heating element having an electromagnetic shielding function according to an embodiment of the present invention, Figure 2 is an exploded perspective view of the main part of FIG.

1 and 2, the planar heating element 100 having an electromagnetic shielding function according to the present invention includes a first carbon heating element 110, a second carbon heating element 120, an adhesive layer 130 to 134, and an insulating layer. 140 to 144 and the shielding layer 150.

That is, as shown in FIGS. 1 and 2, the planar heating element 100 having the electromagnetic shielding function is provided on both surfaces of the first carbon heating element 110 through the first adhesive layer 130 and the second adhesive layer 132. The first insulating layer 140 and the second insulating layer 142 are attached to each other, and the second carbon heating element 120 is attached to one side of the second insulating layer 142, and the second carbon heating element 120 The third insulating layer 144 is attached to the other side via the third adhesive layer 134, and the other side (outermost part) of the first insulating layer 130 and the other side of the third insulating layer 144 (most The shielding layer 150 is formed on the outer portion. In this case, the first insulating layer 140, the second insulating layer 142, and the third insulating layer 144 have a structure of a front end insulating layer 141 ′ and a rear end insulating layer 141 ″, respectively.

The first carbon heating element 110 is formed by weaving the carbon fiber 111, and has a first electrode 114 and a second electrode 115, as shown in Figure 3, plus to the first electrode 114 Positive power is applied and negative (-) power is applied to the second electrode 115. 3 is a view showing an electrode of a carbon heating element for applying power in accordance with an embodiment of the present invention.

The second carbon heating element 120 is formed by weaving the carbon fibers 111, and has a first electrode 114 and a second electrode 115, and is opposite to the first carbon heating element 110. As a result, a negative (-) power is applied and a positive (+) power is applied to the second electrode 115.

The chemical composition of carbon (graphite) used as a raw material in the present invention is a known substance as C, which is homogeneous with diamond, and has a hardness of 1 or less, a specific gravity of 1.9 to 2.3, a fat-like texture, opaque black and metallic gloss. It is a good conductor of electricity.

The adhesive layers 130 to 134 have a heat resistance temperature equal to or higher than the exothermic temperature of the first carbon heating element 110 or the second carbon heating element 120, and one or both surfaces of the first carbon heating element 110 or the second carbon heating element 120. Is formed.

The insulating layer 140 is made of a material having heat resistance higher than the exothermic temperature of the first carbon heating element 110 or the second carbon heating element 120, and is formed on the first carbon heating element 110 or the second carbon heating element 120. Insulate so that tension is not directly transmitted. In this case, each of the insulating layers 140 to 144 may include an upper insulating layer 141 ′ and a lower insulating layer 141 ″.

The tip insulating layer 141 ′ is made of a thermoplastic resin (PET) having heat resistance higher than the heat generation temperature of the carbon heating elements 110 and 120, and is formed by the adhesive layers 130 to 134. It is integrally coupled to the carbon heating element (120).

The rear end insulating layer 141 ″ is made of a thermoplastic resin having a heat resistance below the exothermic temperature of the first carbon heating element 110 or the second carbon heating element 120, and the first carbon heating element 110 or the second carbon. The first carbon heating element 110 or the first carbon heating element 110 so that the tensile force is not directly transmitted to the carbon fiber 111 of the first carbon heating element 110 or the second carbon heating element 120 even when heat deformation is generated by the heating of the heating element 120. The front end insulating layer 141 ′ is covered so as not to contact the second carbon heating element 120.

The shielding layer 150 has a predetermined ratio of ceramic, germanium, carbon and polyester components in order to shield the electric field generated when power is applied to the first carbon heating element 110 or the second carbon heating element 120. To shield the electric field.

On the other hand, the first carbon heating element 110 or the second carbon heating element 120 is a weft yarn in which a plurality of carbon fibers 111 and insulating heat-resistant fibers 112 are alternately formed; Warp yarns composed of insulating heat-resistant fibers 112 and woven with weft yarns; And a conductive material 113 formed extending along the inclination to continuously contact the plurality of carbon fibers 111 and disposed in the extending direction of the carbon fiber 110 at a spaced interval.

As described above, the carbon fiber 111 is woven to manufacture a carbon heating element 110 in a cotton or fabric shape, and a plurality of carbon fibers 111 are evenly distributed and disposed so as not to overlap each other by the heat-resistant fibers 112. It is connected to the power supply through the conductive material 13 in a state, thereby realizing a heat generating function of a predetermined temperature range by energizing.

The adhesive layers 130 to 134 are manufactured to have a heat resistance temperature higher than the heat generating temperature of the carbon heating elements 110 and 120, and are formed on one or both surfaces of the carbon heating elements 110 and 120, respectively. When the exothermic temperature ranges from 100 to 200 ° C., if the phenol resin is mixed with polyvinyl butyral (PVB, polyvinyl butyral) having heat resistance of 200 ° C. or more, a heat resistance temperature of 200 ° C. or more can be realized.

When the tip insulation layer 141 'is made of polyvinyl chloride (PVC), which is generally applied as a single layer of insulation to a conventional planar heating element, polyvinyl chloride generally has a heat resistance temperature of 40 to 80 ° C. As the heat generation temperature of the carbon heating elements (110, 120) is 100 ~ 200 ℃ will cause heat deformation.

When the rear end insulating layer 141 ″ is made of a material having a heat resistance temperature of 240 ° C. or higher, such as polyethylene terephthalate (PET), the heat resistance temperature of the front end insulating layer 141 ′ and the carbon heating elements 110 and 120 The pressing force acting at the connection portion with the rear end insulating layer 141 '' while maintaining the state where the front end insulating layer 141 'is attached to the carbon heating elements 110 and 120 without thermal deformation even under the heat generation temperature of It is possible to block or alleviate the transfer to the carbon heating elements 110 and 120.

The rear end insulating layer 141 '', which forms the surfaces of the carbon heating elements 110 and 120, is easily processed and produced such as polyethylene, polypropylene, vinyl chloride resin, vinyl acetate resin, polystyrene, ABS resin, acrylic resin, and the like. It is preferable to configure the thermoplastic resin having excellent efficiency and economical efficiency, and the front end insulating layer 141 'is also preferably composed of the thermoplastic resin under conditions having a heat resistance temperature higher than the exothermic temperature of the carbon heating elements 110 and 120.

Since the front end insulating layer 141 'is integrally connected together with the rear end insulating layer 141' 'in one film form, a thickness of 0.012 mm or more and 0.016 mm or less is formed on one surface of the rear end insulating layer 141' '. Airtightly formed and integrally connected to the rear end insulating layer 141 '' by a simple process of coating and cooling the furnace, or are integrally combined with the rear end insulating layer 141 '' and the carbon heating elements 110 and 120. It can be separately formed in a film shape having a thickness capable of implementing the flexibility to be integrally connected by bonding.

In addition, the front end insulating layer 141 'is applied to a specified thickness or formed in a film form, and is formed on one surface of the rear end insulating layer 141' 'by a liquid or film adhesive having a heat resistance temperature of 200 ° C. or higher. It can be integrally formed integrally connected.

In the planar heating element 100 having the electromagnetic shielding function according to the present invention having the configuration as described above, a positive (+) power is applied to the first electrode 114 of the first carbon heating element 110 and the second electrode ( At the same time, a negative power is applied to the 115, and a negative power is applied to the first electrode 114 of the second carbon heating element 120 and a positive power is applied to the second electrode 115. As it is applied, since the magnetic field generated in the first carbon heating element 110 and the magnetic field generated in the second carbon heating element 120 are magnetic fields in different directions, they are canceled out. Therefore, as the magnetic field generated by the first carbon heating element 110 and the second carbon heating element 120 cancels, the planar heating element 100 has an effect of shielding the magnetic field.

In addition, the shielding layer 150, such as a nonwoven fabric, is wrapped around the outermost surfaces of the first insulating layer 140 and the third insulating layer 144 to thereby cover the first carbon heating element 110 and the second carbon heating element 120. The electric field generated at has the effect of shielding by the shielding layer 150.

In addition, the planar heating element 100 having an electromagnetic shielding function according to the present invention is formed of a material having a relatively low heat resistance temperature, such as polyvinyl chloride, to form a rear insulation layer 141 '' to form a carbon heating element 110 or 120. In coating the surface of the film, the front end insulating layer 141 'having better heat resistance such as polyethylene terephthalate (PET) is integrally formed between the carbon heating elements 110 and 120 and the rear end insulating layer 141' '. Has an inserted structure

Therefore, even when the insulating layers 140 and 144 are thermally deformed at the outermost side when the carbon heating elements 110 and 120 are heated, the ends of the carbon heating elements 110 and 120 may be separated by the heat resistance of the rear end insulating layers 141 ″. While maintaining a firm coupling structure between the insulating layers 141 ′, the tensile force is stably prevented from being transmitted to the carbon heating elements 110 and 120.

Accordingly, even during the high temperature exothermic operation of 100 ° C. or more, the heat generation efficiency of the planar heating element is lowered due to the increase in resistance due to the excessive tension of the carbon fiber, and the life of the carbon heating element can be prevented from being lowered. Due to the distribution it is possible to maintain the exothermic uniformity throughout the carbon heating element.

As described above, according to the present invention, a plurality of heat generating elements using carbon as a heat generating source are configured, and powers of different electrodes are applied to each of the heat generating elements so that electric fields generated in the heat generating elements are canceled, and the structure is wrapped with a nonwoven fabric on the outside. It is possible to realize a planar heating element having an electromagnetic shielding function, which is capable of shielding an electric field.

As those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features, the embodiments described above should be understood as illustrative and not restrictive in all aspects. Should be. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

1 is a structural diagram showing a main section of a planar heating element having an electromagnetic shielding function according to an embodiment of the present invention, Figure 2 is an exploded perspective view of the main part of FIG.

3 is a view showing an electrode of a carbon heating element for applying power in accordance with an embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

100: plane heating element 110: first carbon heating element

111: carbon fiber 112: insulating heat-resistant fiber

113: conductive material 114: first electrode

115: second electrode 120: second carbon heating element

130: first adhesive layer 132: second adhesive layer

134: third adhesive layer 140: first insulating layer

141 ': Front end insulation layer 141' ': Rear end insulation layer

142: second insulating layer 144: third insulating layer

150: shielding layer

Claims (9)

A first carbon heating element which is formed by weaving carbon fibers, has a first electrode and a second electrode, a positive power is applied to the first electrode, and a negative power is applied to the second electrode; A second carbon heating element which is formed by weaving carbon fibers, has a first electrode and a second electrode, a negative power is applied to the first electrode, and a positive power is applied to the second electrode; An adhesive layer having a heat resistance temperature equal to or greater than an exothermic temperature of the first carbon heating element or the second carbon heating element, and formed on one or both surfaces of the first carbon heating element or the second carbon heating element; And An insulating layer composed of a material having a heat resistance higher than an exothermic temperature of the first carbon heating element or the second carbon heating element, and insulating such that tensile force is not directly transmitted to the first carbon heating element or the second carbon heating element; And A shielding layer for shielding an electric field by combining a ceramic component with a germanium component, a carbon component, and a polyester component in a proportion to shield an electric field generated when power is applied to the first carbon heating element or the second carbon heating element; Planar heating element having an electromagnetic shielding function comprising a. The method of claim 1, The first insulating layer 140 and the second insulating layer 142 are attached to both surfaces of the first carbon heating element through the first adhesive layer 130 and the second adhesive layer 132, respectively, and the second insulating layer 142. The second carbon heating element 120 is attached to one side of the second carbon heating element 120, and the third insulating layer 144 is attached to the other side of the second carbon heating element 120 through the third adhesive layer 134, and the first insulating layer ( The shielding layer 150 is formed in the outermost part which is the other surface of 130, and the outermost part which is the other surface of the 3rd insulating layer 144, The surface heating element which has the electromagnetic shielding function characterized by the above-mentioned. The method of claim 1, wherein the insulating layer, A front end insulating layer composed of a thermoplastic resin (PET) having heat resistance higher than an exothermic temperature of the carbon heating element and integrally bonded to the first carbon heating element or the second carbon heating element by the adhesive layer; And It is composed of a thermoplastic resin having a heat resistance of less than the exothermic temperature of the first carbon heating element or the second carbon heating element, even if the heat deformation occurs by the heat generation of the first carbon heating element or the second carbon heating element, the first carbon A rear end insulating layer covering the front end insulating layer so as not to contact the first carbon heating element or the second carbon heating element so that tensile force is not directly transmitted to the heating element or the carbon fiber of the second carbon heating element; Planar heating element having an electromagnetic shielding function comprising a. The method of claim 1, The first carbon heating element or the second carbon heating element, A weft yarn in which a plurality of carbon fibers and insulating heat resistant fibers are alternately formed; A warp made of insulating heat resistant fiber and woven with the weft yarn; And A conductive material extending along the inclination so as to be in continuous contact with the plurality of carbon fibers, the plurality of conductive materials being disposed at a spacing interval in the extending direction of the carbon fibers; Planar heating element having an electromagnetic shielding function comprising a. The method of claim 2, wherein the front end insulating layer, The planar heating element having an electromagnetic shielding function, which is applied to the rear end insulating layer and has a thickness of 0.012 mm or more and 0.016 mm or less and is connected to the rear end insulating layer. The method of claim 2, wherein the front end insulating layer, The planar heating element having an electromagnetic shielding function, characterized in that it has a film shape having a thickness capable of implementing flexibility in a state coupled to the rear end insulating layer and the first carbon heating element. The tip insulation layer according to claim 5 or 6, An electromagnetic field characterized in that the phenol resin and the polyvinyl butyl al having a heat resistance of 200 ° C. or higher are mixed and adhered to the rear end insulating layer by an adhesive formed on one surface of the rear end insulating layer having a heat resistance temperature of 200 ° C. or higher. Planar heating element with shielding function. The method of claim 1, wherein the adhesive layer, A planar heating element having an electromagnetic shielding function, comprising a phenol resin and a polyvinyl butyral having a heat resistance temperature of 200 ° C. or higher to realize heat resistance of 200 ° C. or higher. The method of claim 2, The tip insulating layer is composed of a thermoplastic resin having a heat resistance temperature of 200 ℃ or more, including polyethylene terephthalate (PET), The rear stage insulating layer is a planar heating element having an electromagnetic shielding function, characterized in that composed of a thermoplastic resin having a heat resistance temperature of less than 200 ℃ containing polyvinyl chloride (PVC).

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