KR20080081218A - Heating sheet using carbon thread - Google Patents

Abstract

A heating sheet using a carbon thread is provided to prevent a spark due to an error of a connection unit by having a firm connection structure through an electrode plate and an electrode body. A heating sheet includes a plurality of carbon threads(2), an electrode plate, a protection film, and sheets(1). The carbon threads are arranged at predetermined intervals. The electrode plate is installed at upper and lower parts of both ends of the carbon threads and is bent while wrapping ends of the carbon threads. The protection film is attached to upper and lower parts of the electrode plate to be wider than the electrode plate and prevents damage of the carbon threads due to an inner end of the electrode plate. The sheets are attached to upper and lower parts of the whole respectively.

Description

Heating sheet using carbon yarn {Heating sheet using carbon thread}

The present invention is characterized by having a structure of suppressing vibration as a heat generating sheet using carbon yarn. That is, the carbon yarns are installed side by side at a predetermined interval between the two sheets stacked up and down, and the conductive wires for applying power to both ends of the carbon yarns are long and perpendicular to the carbon yarns, and both ends of the carbon yarns are crimped with copper plates. The present invention relates to a heat-generating sheet using carbon yarns by which the both ends of the carbon yarns, which are the starting point of vibration generation, are firmly pressed and fixed, thereby preventing lifting between the carbon yarns and the sheets by vibration and increasing heat transfer efficiency.

[Document 1] Korean Utility Model Registration No. 0421943, 2006.07.12

[Document 2] Korea Utility Model Registration No.0407510, 2006.01.24

[Document 3] Korean Patent Registration No. 0762344, 2007.09.20

The heat generating sheet using carbon yarn as a heating element is a carbon yarn made by thermal carbonization from rayon fibers and completed by a quasi one-dimensional carbon fiber semiconductor having a linear carbon structure as a fuming body. In general, carbon yarns are made of carbon having a graphite structure, and have high elasticity and strength, and are light.

Carbon is classified into polyacrylonitrile (PAN), pitch, and rayon, depending on the raw material, of which PAN and rayon are used. And PAN-based carbon fiber is made by firing PAN at a temperature of 1,000 ~ 2,000 ℃ or more under inert gas. In the case of the pitch system, the pitch from coal is fiberized and completed through the same process as the PAN system, but since the value is cheap compared to the PAN series, it is widely used as a high temperature insulation material or a reinforcement material. In addition, carbon fiber or carbon powder having a similar defect structure to carbon is widely used as a structure that generates electricity by energizing electricity to a heating element and utilizing a collision of charges.

In the case described above, the carbon fiber or carbon powder is evenly distributed on the surface heating element, so that the heating element is generally warm and consumes less power.However, when heat is generated from the carbon fiber due to resistance, the resistance value is not constant. Phosphorus overheating occurs and has a disadvantage of shortening the life due to exhaust of carbon when heat generated by resistance.

In addition, crystal line materials (crystals) having excellent conductivity and anisotropic electrical conductivity in a selected direction in a crystalline vertical section in general are various and widely known, and recently, a new synthetic carbon has been developed, which is a linear chain. It is formed of a polymer (= C = C) n and is called a carbin.

The carbine has an interatomic distance of 2.75 kV and a planar distance of linear carbon chains of 8.34 kPa. That is, it is regarded as carbon of the linear structure having one-dimensional conductivity. Such fibers are produced for industrial purposes by pyrolysis of rayon at a heat treatment temperature of 2,200 ° C. and nitrogen gas.

However, these conventional quasi-one-conducting materials are semiconductors using 'hole' conductivity, so they can be recombined by the movement of electrons, and when current passes, they accumulate electrons on their surfaces such as capacitors. Although used in devices capable of flowing alternating current, such conditions have a reduction in response (induction) losses due to cosφ changes, and inductance in the alternating chain is a direct loss of electrical force due to the phase of the delayed current from voltage. .

There is a carbon company for solving such a problem. This is a quasi one-dimensional fiber of a linear carbon structure is a quasi one-dimensional fiber of a linear carbon structure attached to a metal plate to be used as a planar heating element. In general, quasi-one-dimensional conductors are crystalline materials whose conductivity increases in the selected direction in the vertical plane of the crystal. This anisotropic conductor is related to the specificity of the crystal structure in which electrons move in one dimension. This phenomenon is mainly observed in lattice consisting of complexes with transition metal atoms. That is, for example, R ₃ Pt (CN ₄ ) B _0.3 .3H ₂ O crystals in which Pt atoms are surrounded by CN molecules to form a parallel ring. Because of the short distance between Pt atoms (2.88Å), electron clouds of Pt atoms intersect with each other and can move between electrons. Another quasi one-dimensional conductor is a material formed of molecules containing tetra-cyano-kino-dimethane (TCNQ) compounds. During crystallization, these complexes are lined up with conductive rings. However, quasi one-dimensional conductors containing metal atoms become unstable because the period of the crystal lattice changes when the crystal lattice deforms. As a result, the quasi one-dimensional conductor transfers to the dielectric state while the temperature decreases. This transition has a problem that is accompanied by changes in the acoustic particle spectrum, optical properties, conductivity, heat capacity of the electron, susceptibility of the paramagnetic body. In addition, the conductor having a two-dimensional crystal layer structure can be a quasi-dimensional conductor. An example is graphite. Graphite has a hexagonal structure in which the distance between the faces is 6.69Å and the distance between atoms in the hexagon is 2.4Å. Differences between layers and atoms can generate about 10,000 times the electrical conductivity. Accordingly, carbon crystals synthesized with a new linear polymer ring (= C = C) n have recently appeared. It has n-type semiconductor properties and transforms into graphite at high temperatures of 2500 ° C. or higher. The carbon fiber having such a linear crystal structure could be obtained by pyrolyzing rayon in an inert gas state at 2200 ° C. Rayon has been used to make various composites and to produce rigid and flexible electric heating elements. In the structure of the "carbine", the distance between atoms is 2.75Å, and the distance between the faces of the linear polymer rings (= C = C) n is 8.34Å. The large spaces between the molecular layers of the graphite crystals thus make it possible to absorb significant amounts of certain substances. If compounds are incorporated into graphite, most compounds are characterized by adsorbates at the boundary between molecular layers. In general, the adsorbate in the vicinity of the boundary will prevent the carbon and other elements from forming so that the intercalating compound can fall away from the boundary between the carbon nets. However, under suitable conditions the adsorbate can be regenerated and extracted to a rather complete graphite matrix. On the other hand, the graphite compound may be separated into two groups. One of them is a graphite compound obtained by extraction of fluoride and oxygen. This group is characterized by the covalent bonding of carbon atoms and insertion compounds. This is why the structure is somewhat distorted. In this group, substances with adsorbates near the boundary are almost similar to chemical compounds. Another group of graphite compounds includes various graphite inserts. They are close to typical adducts, but the differences in polarization of the particles of the insert and the graphite layer are largely different. And such a graphite compound is not greatly affected by the distortion of the structure.

In view of the aforementioned, not only can insertion compounds with new linear polymer rings (= C = C) n be formed, but such insertion compounds can fundamentally change the electrical conductivity in the vertical direction of the carbon fiber. This becomes possible. As can be seen from the conventional semiconductor theory, impurities such as intercalation compounds create adducts in the semiconductor forbidden zone. If the atoms of the impurity are in the lattice knot of the crystal, they are called substitution impurities, and if the atoms of the impurity are between the crystal lattice gaps, they are called intercalates.

By forming an intercalation compound on the surface of the carbon fiber and adding an anion to the space between the carbon rings, electrons having electrical conductivity can be collected in the intercalation compound layer to obtain a semiconductor which is not related to conduction of current. In this case, the hole concentration in the semiconductor is much higher than the concentration of electrons transferred to the valence band. In other words, it is a p-type semiconductor with quasi one-dimensional conductivity.

Therefore, the carbon yarn used in the present invention is a quasi one-dimensional carbon fiber having a linear carbon structure by having an inserter impurity (inorganic anion) inserted into the carbon fiber, having the characteristics as described above.

Therefore, the quasi one-dimensional structure of the linear carbon structure formed by adding carbon fibers formed by deforming carbon crystals synthesized by linear polymer rings into graphite at high temperatures and inorganic anions, which are acceptor substitute impurities, in the spaces between the carbon rings of the carbon fibers. It is a fiber.

The method of manufacturing the method comprises the steps of electrochemically treating a carbon ribbon, washing the electrochemically treated carbon ribbon, and drying the washed carbon ribbon to produce a semi-dimensional fibrous semiconductor having a linear carbon structure. And saturating the dried carbon ribbon with a silicon solution, and forming a solid line of the carbon ribbon saturated with silicon.

By attaching a metal plate on the surface of the carbon fiber manufactured as described above, it can be used in a heat-transfer element capable of dissipating high efficiency heat. And when the alternating current passes through the carbon fiber, as the hole of the carbon fiber conducts, it radiates a small amount of electromagnetic waves to protect the human body safely.

In the heat generating sheet including such carbon fiber yarns, the carbon yarns as heating elements are arranged across the sheet at regular intervals between the two stacked sheets, and a conductive tape for applying power to the carbon yarns is attached. That is, the conductive tape was attached across a plurality of carbon yarns, and both ends of the carbon yarns were inserted between the sheets in a free state without restriction.

However, a fine ultrasonic wave is generated in the carbon yarn through which the current flows, thereby generating a fine vibration. In particular, in the case of the carbon yarn free at both ends, the vibration is so large that the adhesive force is lost in all sections of the carbon yarn inserted between the sheets to generate voids. Therefore, the heat generated from the carbon yarns is not transferred to the sheet due to the thermal insulation of the pores, and the surroundings of the carbon yarns are locally collected at a higher temperature than the set value, thereby leading to a problem of disconnection of the carbon yarns.

Therefore, an object of the present invention is to provide a structure which fundamentally prevents vibration of carbon yarn.

In order to achieve the above object, the present invention is to install a plate-shaped electrode plate in each of the upper and lower ends of the carbon yarn, bend the end of any one of the electrode plate is fixed while wrapping the end of the carbon yarn, the other electrode plate Press to provide a structure for energizing the carbon yarn. In addition, by ensuring the reliability of the electricity supply to solve the problems such as sparks and provides a structure in which a plurality of electrode bodies intersecting the carbon yarn between the upper and lower electrode plate inserted.

According to the present invention, the end of the carbon yarn is fixed and energized to prevent vibration of the carbon yarn caused by electric current, thereby improving the adhesive force between the carbon yarn and the sheet, thereby improving thermal conductivity, and by a reliable connection structure by the electrode plate and the electrode body. There is an effect that can prevent the occurrence of sparks, vibration, etc. due to poor connection.

The present invention is a carbon yarn (2) is arranged a plurality of strands across the interval; Electrode plates (3) installed at upper and lower portions of both ends of the carbon yarns (2) and bent while covering the ends of the carbon yarns (2); A protective film 11 attached to upper and lower portions of the electrode plate 3 to be wider than the width of the electrode plate 3 to prevent the inner end of the electrode plate 3 from damaging the carbon yarn 2; And a sheet 1 attached to each of the entire upper and lower portions.

The heat sink 12 is attached to the surface of the sheet 1 located above the sheet 1 to improve the heat transfer to the top.

Then, the plurality of electrode bodies 4 that cross the carbon yarns 2 are inserted between the carbon yarns 2 and the electrode plates 3 and pressed, so that the carbon yarns 2 are more reliably electrode plated 3. ) Can be connected. The electrode body 4 can be used in various ways, such as a metal which electrically connects the electrode plate 3 and the carbon yarn 2, and a conductive tape.

The electrode plates 3 on both sides may be connected to a power source, respectively. Alternatively, only one electrode plate 3 is bisected to have an independent structure, and each bisected can be connected to a power source. In this case, the length of the carbon yarn 2 to which the power source and the power source are connected is increased. There is a small amount of heat generated by the power loss can be used if you want to apply the same power but a small amount of heat.

In this case, the present invention can be applied to an alternating current power source, and can be configured to be more suitable for a direct current power source. Electrode plates (3) provided at upper and lower portions of both ends of the carbon yarns (2), bent while covering the ends of the carbon yarns (2), and both ends are connected to one pole of a DC power source; A second electrode plate 13 connected across the center of the carbon yarn 2 and connected to the other pole of the direct current power source; A protective film 11 attached to upper and lower portions of the electrode plate 3 to be wider than the width of the electrode plate 3 to prevent the inner end of the electrode plate 3 from damaging the carbon yarn 2; And a sheet 1 attached to each of the entire upper and lower portions.

The structure in which the electrode plate 3 is bent and coupled to the carbon yarn 2 may be varied as shown in FIGS. 2 and 3. First, in the case of FIG. 2, the electrode plate 3 of flat plate shape is respectively provided in the upper and lower parts of the both ends of the carbon yarn 2, and the edge part of the lower electrode plate 3 protrudes more than the carbon yarn 2, The said lower side The protruding portion of the electrode plate 3 is bent while wrapping the ends of the carbon yarn 2 to press-fix the carbon yarn 2, and the upper electrode plate 3 compresses the carbon yarn 2 to lower the electrode plate. By being combined with (3), it has a structure which supplies electricity to the carbon yarn 2.

In the case of FIG. 3, the electrode plates 3 in the form of flat plates are respectively provided on the upper and lower ends of the carbon yarns 2, and the end portions of the upper and lower electrode plates 3 are bent together with the carbon yarns 2 to form the carbon yarns. It has a structure which supplies electricity to the carbon yarn 2 by crimping | fixing and fixing (2).

In the above, the electrode plate 3 has a structure connected to an external power source, and the number of times the electrode plate 3 is pressed and bent by the carbon yarn 2 may be one or more times. In addition, when the electrode plate 3 is formed to protrude to the edge of the sheet 1, the insulating tape 10 may be attached.

The present invention having such a structure has a structure in which both end portions of the carbon yarn 2 are wrapped and bent by the electrode plate 3, respectively, so that the end portions of the carbon yarn 2 are bound to provide fine vibration during energization. I can catch you. Therefore, the carbon yarns 2 pressed between the upper and lower sheets 1 are not separated by the vibration of the carbon yarns 2, thereby generating heat in a completely adhered state, and the generated heat is transferred to the sheet 1.

In addition, by inserting one or more electrode bodies 4 between the electrode plates 3 and the carbon yarns 2 and pressing them together, electrical connection with the carbon yarns 2 can be made at a number of places, and the upper and lower sheets ( 1) There is no failure of electrical connection by forming a contact such as a connecting projection therein by pressing.

And since the inner end of the electrode plate 3 may be damaged by pressing the carbon yarn (2), the present invention is to protect the inner end of the electrode plate 3 and the carbon yarn (2) at the same time to protect the protective film ( 11) is attached to the upper and lower surfaces. The protective film 11 is preferably a synthetic resin having a certain degree of flexibility and rigidity. Therefore, even when the electrode plate 3 is folded at its end, the protective film 11 serves to protect the carbon yarn 2 from being folded.

And, in the present invention, the heat sink 12 may be attached to one side of the sheet 1, the heat generated from the carbon yarn 2 is uniformly transmitted to the outside through a large area of the heat sink 12, The efficiency can be improved. The heat sink 12 is preferably a metal plate having good heat transfer such as aluminum and copper.

Moreover, this invention can use various power sources, such as a direct current | flow and an alternating current, FIG.

6 (a) is a general embodiment, and FIG. 6 (b) is a structure for lengthening the length of the carbon yarn 2 connected to the power source, without connecting the power source to the electrode plate 3 provided at both ends. In other words, the electrode plate 3 on the left side in FIG. 6 (b) is equally divided into two parts, and a power source is connected to each of the two parts. In this case, since the carbon yarn 2 is energized from the upper portion of the left electrode plate 3 to the lower electrode plate 3 on the left side via the right electrode plate 3, the carbon yarn 2 is elongated. It is installed structure. Therefore, the length of the carbon yarn 2 can be lengthened without a special control structure, thereby lowering the exothermic temperature due to the generation of power loss.

The apparatus for manufacturing the heat transfer sheet as described above using a plurality of strands of carbon yarn 2 is shown in Figs. 7 and 8, the structure and operation of which are as follows.

The heat-transfer sheet manufacturing apparatus of the present invention includes a frame 5 constituting a base, and a seating 6 mounted on the upper and lower portions of the frame 5 so as to be rotated one by one, and adjacently adjacent to the seating 6. A pair of upper and lower press rollers 7, a plurality of carbon savobins 8 rotatably mounted on the press rollers 7, and a heating plate respectively installed on the pair of press rollers 7. It consists of (9).

The frame 5 is a part where various structures are provided. The reel-type carbon savobin 8 is mounted on the front upper part of the frame 5 so as to be replaced. In addition, the frame 5 is provided with a power supply device for heating the heating plate 9 and driving of the pressing roller 7 and the like, and a conventional driving device and a control device, and a general cutter (not shown) may be installed. And it may be further provided with a carbon yarn feed guide means for guiding the carbon yarn 2 at a predetermined interval between the upper and lower sheets 1, thereby stably supplied to the pressing roller (7) side.

The heating plate 9 heats the carbon yarns 2 supplied from the carbon yarn bobbins 8 mounted on the frame 5 and the upper and lower sheets 1 fed through the seattle 6. The heating plate 9 is heated by a heating device such as a conventional heating wire, not shown, and the heating device is connected to a general power supply and a control device installed in the frame 5 to generate heat and control. . The pressing roller 7 is for pressing the upper and lower sheets 1 in which the carbon yarn 2 is embedded, and is mounted on the frame 5 so as to be positioned directly behind the two heating plates 9.

In this way, the sheet 1 and the carbon yarn 2 are continuously supplied between the heating plate 9 through the carbon savobin 8 and the seating 6, respectively, and the upper and lower sheets 1 have surfaces of the respective heating plate 9. Heated and heated in the process of transporting along, the upper and lower sheet 1 is heated by the heating plate 9 due to the nature of the synthetic resin material is changed to a slightly mushy state that can be pressed well, the bonding of the sheet (1) The thermosetting adhesive applied to the cotton also has adhesive properties by heating. And the carbon yarn 2 is completely adhere | attached and fixed in the inside of the sheet | seat 1 of the upper and lower sides by the pair of pressing rollers 7.

When the carbon yarn 2 is embedded in the sheet 1 in such a process, the carbon yarn 2 is cut in units of a predetermined length. The carbon yarn 2 in the cut portion is brought into close contact with the electrode plate 3 and then bent together to produce a structure in which electricity is connected.

1 is a perspective view of a heat transfer sheet

2 and 3 are detailed cross-sectional views of the connection between the electrode plate and the carbon yarn according to each embodiment

Figure 4 is a perspective view of the heat transfer sheet attached to the heat sink

5 is a cross-sectional view of the heat transfer sheet is attached to the heat sink

6 is a variety of embodiments in which the power is connected to the carbon company

7 is a perspective view of a heat transfer sheet manufacturing apparatus;

8 is a view showing the main components of the heat transfer sheet manufacturing apparatus

※ Explanation of codes for main parts of drawing

1: sheet 2: carbon yarn

3: electrode plate 4: electrode body

5: frame 6: sea troll

7: pressing roller 8: carbon sabobin

9: heating plate 10: insulating tape

11: protective film 12: heat sink

13: second electrode plate

Claims (6)

A carbon yarn 2 in which a plurality of strands are arranged at regular intervals; Electrode plates (3) installed at upper and lower portions of both ends of the carbon yarns (2) and bent while covering the ends of the carbon yarns (2); A protective film 11 attached to upper and lower portions of the electrode plate 3 to be wider than the width of the electrode plate 3 to prevent the inner end of the electrode plate 3 from damaging the carbon yarn 2; Sheets (1) attached to each of the upper and lower parts; heat generating sheet using a carbon yarn comprising a. The heat generating sheet using carbon yarns according to claim 1, characterized in that a heat sink (12) is attached to the surface of the upper sheet (1). The heat generating sheet using carbon yarns according to claim 1, wherein a plurality of electrode bodies (4) traversing the carbon yarns (2) are inserted between the carbon yarns (2) and the electrode plates (3) to be pressed. The heat generating sheet using carbon yarns according to claim 1, wherein the electrode plates (3) on both sides are connected to a power source, respectively. The heat generating sheet using carbon yarns according to claim 1, wherein the electrode plate (3) on one side is bisected and has an independent structure, and each bisected is connected to a power source. A carbon yarn 2 in which a plurality of strands are arranged at regular intervals; Electrode plates (3) provided at upper and lower portions of both ends of the carbon yarns (2), bent while covering the ends of the carbon yarns (2), and both ends are connected to one pole of a DC power source; A second electrode plate 13 connected across the center of the carbon yarn 2 and connected to the other pole of the direct current power source; A protective film 11 attached to upper and lower portions of the electrode plate 3 to be wider than the width of the electrode plate 3 to prevent the inner end of the electrode plate 3 from damaging the carbon yarn 2; Sheets (1) attached to each of the upper and lower parts; heat generating sheet using a carbon yarn comprising a.

Images