KR101042184B1 - Method for radiating heat using carbon fiber - Google Patents

Abstract

PURPOSE: A heating fabric, a manufacturing method and a seat heater for a car are provided by using a semi-permanent carbon fiber where heat distribution effect is regular, a heat transfer is rapid and electricity consumption is saved. CONSTITUTION: A carbon fiber and an electrode terminal portion(30) are formed on an upper end of a base layer(10). The carbon fiber plays a role of the conductive heating element(20). The electrode terminal portion supplies the power. The shape of the carbon fiber and the electrode terminal portion are maintained by arranging the carbon fiber on an upper end of an unwoven fabric and inserting the electrode terminal portion into a set position between the unwoven fabric and the carbon fiber.

Description

 Heat generating fabric using carbon fiber, manufacturing method thereof and vehicle seat heater using the same {METHOD FOR RADIATING HEAT USING CARBON FIBER}

The present invention relates to a heat generating fabric using carbon fiber, a method for manufacturing the same, and a seat heater for a vehicle using the same. More specifically, the heat generating fabric including a base layer, a conductive layer, and an insulating layer is used, and warp knitting is used. The conductive layer is formed of carbon fiber, which acts as a conductive heating element, on top of the base layer, and the electrode terminals for power supply are arranged, and the base layer and the conductive layer are combined with each other by a stitch bonding method, which is a knit manufacturing method. The present invention relates to a heat generating fabric using carbon fiber, a method of manufacturing the same, and a seat heater for a vehicle using the same.

Generally, the heating element is divided into a planar heating element and a linear heating element. Among the planar heating elements, carbon paste is deposited on one side of the film as a heating element, and then the film coated with acrylic adhesive is heat-processed by a roller fusing press. In addition to the method of weaving the film type and carbon yarn into a fabric structure, carbon fiber is produced as a heating circuit by sewing machine for embroidery. In the case of a linear heating element, a nichrome wire is mainly used as a heating element. This is a widely applied method.

In the case of a vehicle seat heater that uses a nichrome wire as a heating element such as a linear heating element, durability decreases with time, and thus a current value is not constant, and a heating line of a nichrome material used as a heating wire is arranged in a series structure in front of the seat. There is a problem that can not be warmed over, the heating function is not available to the entire sheet if the heat wire is broken or broken due to external shock. As a result, the consumer has a problem in that an economic burden is incurred if it is inevitable to be replaced due to frequent AS occurrence and inability to use it.

The present invention has been made to solve the above problems, by arranging the carbon fiber of the role of the conductive heating element on the upper end of the non-woven fabric material forming the base layer of the heat-fabric fabric (Stitch Bonding) of the knitting technology At the same time, the electrode terminals for power supply are combined with each other by a mechanical method, and the carbon fiber's electric heating characteristics are used. Carbon fiber is an eco-friendly heating material that does not emit nitrogen oxides, sulfur oxides, and carbon dioxide, which are the main causes of air pollution It is an object of the present invention to provide a heat generating fabric using semi-permanent carbon fiber, a method of manufacturing the same, and a seat heater for a vehicle using the same, with a uniform heat distribution effect of a heating element, a very fast heat transfer rate, and low electricity consumption.

According to a feature of the present invention for achieving the above object, the present invention is provided with a base layer for receiving the conductive heating element and the electrode terminal portion, the carbon fiber having a conductive heating element and the electrode terminal portion made of carbon fibers on the upper side of the base layer In the heat generating fabric used, the electrode terminal portion for supplying the carbon fiber and the power supply as a conductive heating element on the upper surface of the base layer, the carbon fiber is arranged on the upper surface of the nonwoven fabric and at the same time between the nonwoven fabric and the carbon fiber electrode Inserting the terminal portion to maintain the shape of the carbon fiber and the electrode terminal portion, characterized in that the integral knitting configuration to be woven in the vertical direction by the stitch bonding method using a twisted yarn.

In the exothermic fabric using carbon fibers, the insulating layer is formed by adhering an EVA resin hot melt film for moisture permeation and moisture proof effect while preventing damage to the conductive layer formed by integrally knitting the carbon fiber and the electrode terminal on the base layer. It is characterized by.

According to another aspect of the present invention, in the method of manufacturing a heat generating fabric using carbon fibers, arranging the carbon fibers in a lattice parallel structure on the upper side of the base layer of the nonwoven fabric material, and the carbon fibers in a lattice parallel manner Arranged to be structured and at the same time inserting the electrode terminal portion of the copper wire power supply line according to the upper and lower portions between the base layer and the carbon fiber according to a predetermined position, while maintaining the shape of the carbon fiber and the electrode terminal portion arranged on the base layer Manufacturing a unitary knitting to be woven in the vertical direction by a stitch bonding method using a yarn; In order to prevent the damage of the conductive layer consisting of the carbon fiber and the electrode terminal unit integrally knit on the base layer is characterized in that the step of manufacturing an insulating layer by adhering an EVA resin hot melt film.

In the method of manufacturing the exothermic fabric using the carbon fiber, a method of integrally knitting the carbon fiber and the electrode terminal portion on the top surface of the base layer is a high-strength polyester twisted yarn (Pillar Stitch) structure of the knit knitting (knit) knitting After the spring needle (51) arranged in the horizontal direction penetrates the base layer (10) without passing through the electrode terminal portion and the carbon fiber arranged in a predetermined position, the guide needle (Guide needle, 52) It is characterized in that the high-strength polyester twisted yarn supplied from the spring needle is supplied to the spring needle, integrally formed with one loop (loop).

According to another aspect of the present invention, the heating fabric using the carbon fiber according to the present invention is cut according to the shape of the seat is integrally attached to the inside of the seat cover, or attached to the cushioning material, characterized in that the vehicle seat heater is configured.

According to the heat generating fabric using the carbon fiber of the present invention, and a method for manufacturing the same and a vehicle seat heater using the same, a lattice having a shape where the carbon fiber serving as the conductive heating element is connected to the upper surface of the nonwoven fabric forming the base layer in a straight line, collected in all directions. By forming a parallel structure, it is possible to maintain the unique function of the seat heater even if a circuit damage such as disconnection due to external shock occurs, and to provide a heating effect of a uniform heat distribution and a normal current flow on the front of the vehicle seat. do.

In addition, the saturation temperature emitted from the carbon fiber used as the conductive heating element is up to 75 ° C, and there is no fear of vehicle fire, and the initial heating rate is faster and the set temperature range is higher than that of the commonly used nichrome wire vehicle seat heater. It maintains a uniform heating value in the inside and provides an eco-friendly effect due to low energy consumption with low current consumption type.

1 is a view showing the configuration of a heat generating fabric according to the present invention.
Figure 2 is an enlarged view of the configuration of the heat generating fabric according to the present invention.
Figure 3 is a cross-sectional view showing the configuration of a heat generating fabric according to the present invention from one side.
Figure 4 is a schematic view showing a manufacturing process by the stitch bonding method of the heating fabric in accordance with the present invention.
5 is a view showing that the heating element of the present invention is applied to a vehicle seat heater.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible, even if shown on different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In addition, the following will describe a preferred embodiment of the present invention, but the technical idea of the present invention is not limited thereto and may be variously modified and modified by those skilled in the art.

1 is a view showing a configuration of a heating element according to the present invention, Figure 2 is a view showing an enlarged view of the configuration of the heating element according to the present invention, Figure 3 is a configuration of a heating element according to the present invention Figure 4 shows a cross-sectional view, Figure 4 shows a schematic view showing a manufacturing process by the stitch bonding method of the heating fabric according to the present invention.

1 to 3, the heat generating fabric 100 using the carbon fiber according to the present invention is provided with a base layer 10 made of a nonwoven fabric 11, and a conductive heating element 20 on the top surface of the base layer 10. The carbon fiber 21 and the electrode terminal part 30 for power supply are configured, but the nonwoven fabric 11 and the carbon fiber 21 are arranged at the same time as the carbon fiber 21 is arranged on the top surface of the nonwoven fabric 11. Inserting the electrode terminal portion 30 in a predetermined position between the carbon fiber 21 and the electrode terminal portion 30 to maintain the shape of the integral knitting configuration to be woven in the vertical direction using the twisted yarn 40, the base layer ( 10) is formed by coating an insulating layer 50 for moisture permeation and moisture proof effect while preventing damage to the conductive heating element 20 and the electrode terminal portion 30 is knitted on.

The base layer 10 is composed of a non-woven fabric 11 of the polyester material of the flame retardant component, the material can be applied without limitation to any form of fabric, knitted fabrics, etc., non-woven material also natural fibers such as regenerated fiber, wool It can also be applied to the back.

Since the surface of the base layer 10 has fine pores due to the gaps between the fibers, the surface is formed to have a uniform thickness, and it is preferable to select a standard considering loads suitable for the thermal insulation problem and the end use.

The carbon fiber 21, which serves as the conductive heating element 20, is a resistance heating mechanism for converting electrical energy into thermal energy, and is a fiber having a diameter of 5 to 15 µm having a carbon content of 90% or more of the PAN series obtained by heating acrylic, compared to steel. It is light with 1/5 of the strength and 10 times the strength. It is a very thin fiber with a thickness of 0.005-0.010mm, which is used as a high strength lightweight material in the aerospace and defense industries. In addition, the carbon atoms constituting the carbon fiber are attached in the form of hexagonal ring crystals along the length of the fiber and thus have strong physical properties due to the molecular arrangement.

In addition, one strand of carbon fiber 21 is made by aggregating 3,000 (3K) carbon fibers, and the density of carbon fiber 21 is much lower than that of iron, because of high tensile strength, light weight, and low coefficient of thermal expansion. It is a material used in various fields.

Carbon conductive fibers 21, which are such conductive heating elements 20, are arranged in a circuit arrangement on the top surface of the base layer 10, and are knitted and bonded to be integrally formed on the base layer 10 by the combustible yarn 40 at the same time. do. At this time, the arrangement structure of the carbon fiber 21 is formed in a parallel structure of a grid shape (or diamond shape) for preventing disconnection and short circuit. It has a buffering role structure that absorbs external shocks, and even if partial disconnection occurs due to external shocks, functional degradation cannot occur due to the characteristics of the parallel structure, and overall contact resistance is minimized by preventing current flow. As a result, the heat distribution can produce an even heating effect.

The carbon fiber has a thickness of 3k (about 1,800den.), Which is 10 times longer than the length of the heating wire used in the existing metal material heating wire type to obtain a uniform heat distribution effect, and a vehicle fire due to overheating. In addition to the permanent function of the heating wire short circuit can be activated by the activation of cellular tissues by the emission of more than 90% of far infrared rays from the carbon fiber of the heating element to provide blood circulation promoting effect and antibacterial / deodorizing effect.

The electrode terminal portion 30 is composed of a positive electrode line and a cathode line of the interlocking line material, and by inserting the knitting between the upper end surface of the nonwoven fabric 11 constituting the base layer 10 and the lower end of the carbon fiber 21 array circuit configuration, by knitting By minimizing the effect of increasing the amount of current and the contact resistance, it is possible to prevent the possibility of exothermic reaction due to the sudden change of the current flow.

On the other hand, in the case of the electrode terminal portion 30 it is possible to adjust the amount of charge of the current in accordance with the adjustment of the arrangement interval between the anode line and the cathode line. In this way, the gap between the anode line and the cathode line constituting the electrode terminal part 30 is automatically inserted according to the weft inserting method by preliminary design, thereby forming an integral knitting between the base layer 10 and the conductive heating element 20 to form a conductive heating element. The phenomenon of overheating at the time of exotherm of the phosphorus carbon fiber 21 is effectively prevented.

The insulating layer 50 is to protect the conductive layer consisting of the conductive heating element 20 and the electrode terminal portion 30 is formed integrally knitted at the upper end of the base layer 10, can be coated on one or both sides and dry coating method or It is formed by bonding the EVA-based resin hot melt film in a laminating method.

Hereinafter, looking at the manufacturing method of the heating fabric 100 according to the present invention,

The heat generating fabric 100 according to the present invention comprises a conductive layer made of a carbon fiber 21 serving as the conductive heating element 20 and an electrode terminal portion 30 for power supply on the top surface of the base layer 10 of the nonwoven fabric 11. It is characterized by the one-piece knitting production by the stitch bonding method,

At the same time as the circuit arrangement of the carbon fiber 21 on the base layer 10, the electrode terminal portion consisting of a positive electrode and a cathode wire is inserted exactly between the base layer and the carbon fiber,

The nonwoven fabric 11 and the carbon fiber 21 and the electrode by the stitch bonding method according to the knit method while maintaining the carbon fiber 21 and the electrode terminal portion 30 is not separated from each other on the base layer, arranged in a form arranged The terminal portion 30 is integrally knitted while weaving in the vertical direction using the false twist yarn 40 made of polyester.

Specifically, referring to FIG. 4, when the spring needles 51 arranged in the horizontal direction of the knitting machine approach the guide needles 52 through the nonwoven fabric 11, the guide needles 52 are formed. The nonwoven fabric 11, the carbon fiber 21, and the electrode terminal part 30 are woven into a pillar structure of a knitted knitting structure by receiving the twisted yarn 40 made of polyester material, and weaving them together in a vertical direction so as to bind them together.

Here, the high-strength polyester twisted yarn 40 uses a pillar stitch, which is a knit piece, and a spring needle 51 arranged in a horizontal direction passes through the base layer 10. After the collision between the electrode terminal portion 30 and the carbon fiber 21 arranged in position without collision, the high-strength polyester twisted yarn supplied from the guide needle 52 is supplied to the spring needle 51 When the spring needle 51 is returned to its original position in the reverse operation state, it is formed integrally with one piece (one course) of single-piece structure.

The circuit arrangement of the carbon fiber 21, which is the conductive heating element 20, on the base layer 10 is arranged in a parallel structure in a lattice shape, and the electrode terminal part 30 composed of an anode line and a cathode line is formed on the base layer 10 and Designed in advance between the carbon fibers 21 and inserted into the predetermined position by the weft insertion method, the circuit arrangement of the carbon fibers 21 and at the same time is integrally knit coupling.

When the carbon fiber 21 and the electrode terminal part 30 are woven in the vertical direction by using the twisted yarn 40 in the vertical direction by the stitch bonding method, the knitted textile heating fabric 100 is formed on the upper surface of the nonwoven fabric 11, By coating the conductive layer by EVA-based resin hot melt film bonding method by a dry coating method or a laminating method to form an insulating layer for moisture permeability and moisture proof effect while preventing damage on the conductive layer.

Therefore, the heat generating fabric 100 according to the present invention forms a structure in which the carbon fiber 21 and the electrode terminal portion 30 are woven by twisting the twisted yarn 40 on the base layer 10 to form a carbon fiber ( 21) and the phenomenon that the electrode terminal portion 30 is pressed can be effectively prevented, and excellent heat safety during heating, and has an even heating effect.

As described above, the heat generating fabric 100 according to the present invention may be cut into a predetermined size and used as a vehicle seat heater. And when the heating element 100 according to the present invention is applied to a seat heater for a vehicle, the distance between the anode line and the cathode line constituting the electrode terminal portion 30 according to the heating area and the calorific value calculated according to the shape of the seat 200 of various forms Determination to produce a heating fabric 100, and cut the produced heating fabric 100 according to the shape of the seat 200 to be integrally attached to the inside of the seat cover or to the cushioning material, the power supply for power supply By connecting the part to the electrode terminal part, the seat heater function is used. Such a vehicle seat heater can be produced as a lightweight product while solving the low power problem that is difficult to apply as a metal heating element.

On the other hand, the mounting or installation portion of the power supply unit for supplying power to the heating element 100 itself when manufacturing a seat heater for a vehicle is commonly used in this field and a detailed description thereof will be omitted.

The above description is merely illustrative of the technical idea of the present invention, and various modifications, changes, and substitutions may be made by those skilled in the art without departing from the essential characteristics of the present invention. will be. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical spirit of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by the embodiments and the accompanying drawings. . The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

10: base layer 11: nonwoven fabric
20: conductive heating element 21: carbon fiber
30: electrode terminal part
40: false twisted yarn
50: insulation layer

Claims (5)

In the heat generating fabric using a carbon fiber having a conductive heating element and an electrode terminal portion formed of a carbon fiber on the upper side of the base layer is provided, the base layer for receiving a conductive heating element and the electrode terminal portion,
The carbon fiber 21 serving as the conductive heating element 20 and the electrode terminal part 30 for power supply are formed on the top surface of the base layer 10, but the carbon fiber 21 is arranged on the top surface of the nonwoven fabric 11. At the same time, by inserting the electrode terminal portion 30 at a predetermined position between the nonwoven fabric 11 and the carbon fiber 21 to maintain the shape of the carbon fiber 21 and the electrode terminal portion 30 using the twisted yarn 40 Heat generating fabric using carbon fiber, characterized in that the integral knitting so as to be woven in the vertical direction by the stitch bonding method.
The method of claim 1, wherein the EVA-based resin hot melt film is adhered to the base layer 10 to prevent the damage of the conductive layer formed by integrally knitting the carbon fiber 21 and the electrode terminal portion 30 to prevent moisture and moisture Heat generating fabric using carbon fiber, characterized in that to form an insulating layer (50).
In the method of manufacturing a heat generating fabric using carbon fiber,
Arranging the carbon fibers 21 on the upper side of the base layer 10 of the nonwoven fabric to have a parallel structure in a lattice shape,
Arranging the carbon fibers 21 in a grid-like parallel structure and inserting the electrode terminal portions 30, which are copper wire power supply lines, according to a predetermined position between the base layer 10 and the carbon fibers 21 at upper and lower ends thereof. Wow,
Manufacturing integral knitting to be woven in the vertical direction by the stitch bonding method using the twisted yarn 40 while maintaining the shape of the carbon fiber 21 and the electrode terminal portion 30 arranged on the base layer 10; ,
In order to prevent the damage of the conductive layer consisting of the carbon fiber 21 and the electrode terminal portion 30 integrally knitted on the base layer 10 by bonding the EVA-based resin hot melt film to form an insulating layer 50 Method for producing a exothermic fabric using carbon fibers, characterized in that.
The method of claim 3, wherein the method of integrally knitting the carbon fiber 21 and the electrode terminal part 30 on the top surface of the base layer 10 includes a pillar of a high-knit polyester twisted yarn 40 in a knit knitted structure. Pillar Stitch structure is used, and spring needles 51 arranged in a horizontal direction penetrate the base layer 10 without penetrating between the electrode terminal portion 30 and the carbon fiber 21 arranged at a predetermined position. After the high-strength polyester twisted yarn 40 supplied from the guide needle (52) is supplied to the spring needle (51), the carbon fiber, characterized in that formed integrally with a loop of one piece (loop) Method for producing a heating fabric using.
Vehicle seat heaters, characterized in that the heat generating fabric (100) using the carbon fiber of claim 1 is cut in accordance with the shape of the seat (200) and integrally attached to the inside of the seat cover or attached to the cushioning material.

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