KR100689990B1 - Net-type line surface heater - Google Patents

Abstract

A net-type line surface heater using flame retardant conductive yarn is provided to prevent combustion by using flame-retardant conductive yarn coated with special flame-retardant material as weft yarn. In a net-type line surface heater using flame retardant conductive yarn, a warp part consists of warp yarn comprising first and second insulating mono yarn in one group. A weft part consists of flame-retardant conductive yarn and weft yarn comprising third and forth mono yarns are in one group. The third and forth mono yarn is closely contacted and arranged along a lengthwise direction of both sides of the flame-retardant conductive yarn. The warp and weft parts have a net-type heater(100) and an electrode part(200). The net-type heater(100) is woven by crossing plain weave and leno weave as fancy leno weave. The electrode part(200) is located in both sides and a center of the heater(100). The belt-type electrode part(200) is woven closely by the warp part and a plurality of conductive wire groups, which consist of two conductive wires respectively, as the plain weave. The electrode part(200) has a three-way-divided connecting structure. The two conductive wires are convergent in the electrode part(200) after the two conductive wires are electrically contacted to the adjacent group positioned on left and right by alternating up and down in regular intervals.

Description

Reticulated wire heating element using flame retardant conductors {Net-type Line Surface Heater}

1 is a view showing an example of a conventional planar heating element (film type).

2 is a view showing another example of a conventional planar heating element (carbon fiber woven type).

3 is a view showing another example of the conventional planar heating element (other reticulated fiber yarn weave type).

4 is a diagram showing a parallel electrode of a conventional planar heating element.

FIG. 5 is a diagram showing parallel electrode load ratios of pre-attached electrodes. FIG.

6 is a view showing the overall configuration of the reticulated wire heating element according to the present invention.

7 is a view showing the configuration of the heat generating portion of the reticulated wire heating element according to the present invention.

8 is a view showing the electrode portion of the reticulated heating element according to the present invention.

Figure 9 is a photograph showing the configuration of the electrode portion of the reticulated wire heating element according to the present invention.

The present invention relates to a reticulated wire heating element using a flame retardant conductive yarn, and more specifically, to a heat generating part woven from a weave composed of a plain weave and a weaving yarn using a flame retardant conductive yarn and an insulated mono yarn. It relates to a reticulated wire heating element provided with an electrode portion of a contact electrode structure.

In general, planar heating elements are heating elements such as thin sheets, boards, films, and wires that convert electrical energy into thermal energy through an object having electrical resistance, and are easy to control temperature and do not contaminate air. Since it is hygienic and noiseless, it is widely used for heating mats, heating pads, bed mattresses, thermal blankets and blankets, residential heating devices for apartments and general houses, and farming and fishing roots and underwater space heating.

As the heat generating source of the planar heating element, a linear heating type using a conventional metal heating wire such as nichrome and a copper / nickel alloy, a metal foil (aluminum foil, copper foil), and a conductive film, a conductive sheet, or a planar type impregnated with a conductive paint is used. Has been. The above-mentioned metal heating wires such as nichrome have a problem that the electricity flows through one wire, and thus, if any part of the metal heating wires is broken, electricity does not pass through the entire heating wire, thereby losing its function as a heating element. And, because of this, since the spacing between the heating wires should be wide, and only a portion of the heating wire generates heat, there is a problem in that the temperature distribution is unevenly formed. In order to solve the problems in the conventional linear heating element using the metal heating wire, planar heating elements in which conductive paints are printed and impregnated with a cloth woven from paper, film or fiber yarn have been developed instead of metal heating wires such as nichrome. Although it has the advantage of uniformly heating the entire surface, even though electricity flows through the entire surface to create defects in the electrode, electricity continues to flow and cannot be separated from the top and the defects. Unless the whole part is cut and the electrode part is cut, overload of the electrode may cause a fire.

In order to solve the above problems of the linear and planar heating elements, a planar linear heating element using carbon fiber yarn as a heating wire has been proposed. Since carbon fiber yarn has excellent far-infrared emissivity, the surface heating element using carbon fiber yarn heating fabric can be heated by radiation to improve energy efficiency, and additionally, it can use various useful effects of far infrared ray. have. However, the planar heating element using the conventional carbon fiber yarn is a woven fabric in which the warp and weft yarns are closely arranged as shown in FIG. 2, so the raw material cost of carbon fiber yarn per unit area is not only high, but also heavy and inconvenient to use in clothes. Since there is almost no gap in the space, heating in Western-style spaces such as apartments, studios and officetels, for example, attaching a heating element to the wall and applying a cement on it to construct a heating wall, or drainage for farming and fishing is essential. There were restrictions on the use of the root zone and underwater space heating and construction of civil works.

In order to solve the problem of the woven planar heating element using the conventional carbon fiber yarn, it is desirable to make the warp yarn's density extremely low to form a net planar heating element. It is not stable and cannot be used. In particular, carbon fiber yarns generally take the form of smooth multifilament yarns without twisting, and are much more rigid than ordinary fiber yarns. Therefore, when weaving them into a net form with a low density, weaving is difficult and almost impossible to handle after weaving. .

Therefore, an attempt has been made to provide a planar heating element having a low net density using carbon fiber yarns. For example, in Japanese Patent Laid-Open No. 2001-7583, as shown in FIG. A planar heating element in the form of weaving and arranging them at a predetermined interval using the weft yarn and bonding each of the intersections thereof with a resin or the like is firmly bonded. However, in order to bind the cross points as described above, after weaving the carbon fiber yarns in the form of a net, the cross points must be bonded, but there is a problem that it is difficult to handle while maintaining the shape until the cross point after weaving itself. In addition, when the rigid carbon fiber yarn is used as a slope, the weaving process itself is difficult, such as causing a lot of problems by friction during the weaving process.

In order to solve such a problem, as shown in FIGS. 3 and 4, in Korean Utility Model No. 0350509, a low-density planar heating element (so-called linear heating element) using carbon fiber yarns, a pair of weft carbon fiber yarns interposed therebetween. When the two inclined yarns cross each other up, down, left and right to form a twist-shaped twist, the carbon fiber yarns pass through the twists formed by the two inclined yarns so that the warp and weft crosses have a low yarn density. There has been proposed a low density planar heating element using carbon fiber yarns having a band-shaped electrode portion formed by the intersection of a mesh-shaped heat generating portion and a warp-shaped conductive line closely arranged in a band form on both sides of the heating portion and carbon fiber yarn of the weft yarn.

However, in the registration room No. 0350509, since the use of the general fiber yarn inclined, when the lamination of the insulation waterproof coating during the post-processing, the mesh structure disappears, and if the liquid coating, the end of the slope uses the common fiber yarn, so there is a problem of moisture absorption. There is a fear of leakage. In addition, using only carbon fiber yarn as a weft yarn, when the liquid coating is concerned, the leakage of the liquid coating film is filled with a fear of leakage, when the coating is thin, a large amount of induction current leakage from the carbon fiber when the thin coating is a high risk of leakage. In addition, the use of general fiber yarns are not only moisture-resistant due to poor moisture resistance, but also well-wrinkled and carbon fiber yarns used as weft yarns may ignite during abnormal heat generation, which may cause a fire. In the form of stability is still weak in the physical shock from the outside there is a problem that the gap between the weft easily distorted.

In the form of electrodes used in the planar heating element, the electrode used in the case of the woven planar heating element is a pre-attached electrode type, and the pre-attached type is a method of attaching the electrode parts together to weave the heating element during weaving. That is, when weaving by the wire attachment type, the copper wire used as the electrode or the conductive wire corresponding to the metal having a resistance capable of applying electricity, and its form is made of parallel electrodes parallel to each other as shown in FIG. As shown in Fig. 2, the load on the inner electrode line closest to the heat generating portion takes about half of the total current, and the electrode burden decreases toward the outside. Therefore, there is a problem in that the electric capacity of the entire heating element is determined by the thickness of the innermost wire.

The present invention has been made to solve the above problems, the object of the present invention is very low stability of the weft yarn in the form of a weft using a plain weaving and weaving, as well as very excellent stability and no wrinkles using insulated mono yarns It prevents short circuit due to moisture resistance, imparts flame retardancy to the conductive yarn itself, and suppresses ignition.The flame retardant conductive yarn automatically melts and cuts at a high temperature of 180 ° C. or higher to cut off the supply of electricity. It has a supply capability and can be separated and heated through three electrode units, and is designed and provided as a free bolt type that is 110Ｖ · 220Ｖ or 12Ｖ · 24Ｖ.

The configuration of the present invention for achieving the above object,

As reticulated wire heating element,

A warp section comprising one set of first and second insulated mono yarns, and a weft section of one set of third and fourth insulated mono yarns arranged in close contact with both sides of the flame retardant conductive yarn and the flame retardant conductive yarn in the longitudinal direction. And the inclined portion and the weft portion is a heating part of the mesh structure of the weaving combined weaving plain weave and yarn weave; and

A strip-shaped electrode portion in which a plurality of conductive wire pairs are tightly woven in the plain weave with the weft portion in both sides and the center of the heat generating portion as one pair of inclined conductive wires, and each conductive wire pair is formed inside the electrode portion. The two conductive wires may be divided into up and down periodically at regular intervals to be electrically contacted with adjacent pairs of the left and right sides, and then the two conductive wires may have an electrode portion having a three-piece junction structure where the two conductive wires converge again.

Preferably, the female is any one selected from the group consisting of three rolls of plain weave, three rolls of resignation, five rolls of plain weave, and five rolls of resignation.

Also preferably, the third and fourth insulating mono yarns are thinner than the flame retardant conductive yarn.

Also preferably, the flame retardant conductive yarn is coated with a paint containing any one or more selected from the group consisting of bromine-based, phosphorus-based, halogen-based and inorganic powders in order to impart flame retardancy to ordinary fiber yarns.

Also preferably, the inorganic powder consists of antimony oxide or magnesium oxide.

In addition, the flame-retardant conductive yarn is a synthetic fiber yarn with a melting point of 180 ° C ~ 250 ° C is automatically melt cut when the heat generation of any part is 180 ° C or more by the application of electricity or by self-exothermic heat is cut off the electricity supply is stopped. .

Also preferably, the conductive wire is twisted by twisting seven strands of copper plated copper wire having a diameter of 0.12 mm.

Also preferably, the plurality of tanks are eight or more tanks.

The insulating mono yarns have a diameter smaller than that of the flame retardant conductive yarns to ensure close contact with the electrode portion, and use moisture-resistant, heat-resistant and good insulation without wrinkles due to the unique elasticity of the mono yarns and without hygroscopicity.

In addition, the flame-retardant conductive yarn coating the paint devised by the present invention to the synthetic fiber yarn of the melting temperature of about 180 ℃ to 250 ℃, the paint essentially includes a resin, a solvent and a pigment, the essential elements and other dispersant And a leveling agent, an antifoaming agent, an antistatic agent, a flame retardant, and a slip agent. Graphite, conductive carbon, metal powder, and the like are used as pigments to impart conductivity, and ganbanite, jade, tourmaline, and germanium, which emit far infrared rays and anions, are added in powder form. In addition, the heating element according to the present invention by applying a specially designed flame retardant directly to the paint to produce a flame retardant carbon conductive paint to produce a conductive yarn using the same. In order to impart flame retardancy, any one or more of bromine-based, phosphorus-based, halogen-based and inorganic powders (antimony oxide, magnesium oxide) are used in combination. Since the flame retardant can be selected and used without any trouble with the constituent elements of the paint and has the most effective effect, the use of the flame retardant can be changed by those factors.

The electrode part may use a variety of metal wires such as copper, nichrome wire, silver, and aluminum as conductive wires. However, in consideration of economical and durability, eight or more pairs of electrodes are formed by twisting and twisting seven strands of copper-plated copper wires together. It is composed of a structure having three electrode portions at both ends and the center portion.

The configuration of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in FIG. 6, the overall configuration of the reticulated wire heating element according to the present invention includes a heat generating portion and electrode portions formed at both ends and the center portion of the heat generating portion.

In more detail about each part,

As shown in FIG. 7, the heat generating part 100 of the reticulated wire heating element according to the present invention uses the first and second insulating mono yarns 110 and 130 in a ramp, and the weft and one strand of the flame retardant conductive yarn 150 as the weft yarn. Third and fourth insulating mono yarns 170 and 190 are used.

The flame retardant conductive yarn 150 used as the weft is automatically melted and cut when the heating of any part becomes 180 ° C. or higher due to abnormal heat generation when electricity is applied, and the electricity supply is stopped. In order to prevent the coating was coated using a flame retardant paint specially designed by the present inventors, when the resistance value of the flame retardant conductive yarn is measured, the difference in the value is small so that the safety of the constant heat generation without partial abnormal heating was considered.

The reticulated wire heating element according to the present invention has a network structure instead of a general high density cloth structure, and for this purpose, the warp and weft yarns are made of plain weft and plain weft yarns.

Plain weave is the simplest structure among the woven fabrics, and the warp and weft yarns are alternately arranged up and down one by one, so that weaving is simple and many tissue points are thin, strong and practical. There is no distinction of surface and various fabrics can be obtained, and there are many tissue points, and the thread does not move freely, so wrinkles are good.

Since the plain weave is a form in which the local inclined yarn and the weft are intertwined by the plowed inclination, unlike the plain weave, a space is formed between the strong and entangled places, and the air permeability is cool, and it is light.

Female weaving is an organization in which warp is entangled with every three or more wefts of weft, and it is a combination of one set of plain weave and four weaving yarn. The number of wefts organized from female to plain is called the number of months, usually in March, May, and July.

The present invention can be woven in women's weaving in March, May and July, and the following example will be explained by the method of March weaving. The reticulated wire heating element of the present invention is a form in which three or more weft yarns or more yarns are intertwined with each other, and the first and second insulated mono yarns 110 and 130, which are inclined, respectively, are inclined. After being laid three times each year, one is entwined with resignation. Relatively thin and fine grain fabric. By using this, the net structure can be more firmly configured without distortion, and a net of constant interval can be formed by the twisted line twist. In the present invention, one strand of the flame retardant conductive yarn 150 is placed in the middle of the weft furnace, and the remaining two strands are the third and fourth insulating mono yarns 170 and 190, and the third and fourth insulating mono yarns 170 and 190 are disposed. Has a form to protect the flame retardant conductive yarn (150). This allows three strands to be thickly coated like one strand of yarn when waterproofing and insulating coating the reticulated wire heating element according to the present invention in the form of a mesh. The thick coating makes it more durable for moisture and other impacts. Sajik is a strong structure with respect to the longitudinal direction in the oblique direction, but is weak in the phenomenon of being pushed in the transverse direction, that is, the edge direction of the weft part because it is twisted about the center of the thread. This risks the electrode portion located at the edge. In order to compensate for these disadvantages, the present invention compensates for the disadvantages of resignation by making the electrode part a flat weave. Plain weave, as described above, is the simplest of the woven tissues, and the weaving is simple and the tissue points are thin, strong, and practical. Although there are many tissue points, the thread does not move freely, and wrinkles are generated well, but this also has an effect of preventing the electrode from being opened, and wrinkles are prevented from occurring by using the elasticity of the insulated mono yarn. Each strand of the electrode part is in close contact with each other to smooth the flow of electricity, as described above, the tissue that can evenly distribute the load of the electrode wire is excellent in plain weave. In addition, as the weaving feature of the reticulated wire heating element according to the present invention, the flame retardant conductive yarn 150 may have a thicker thread than the insulating mono yarns 170 and 190, and the cross-sectional area of the flame retardant conductive yarn 150 may be insulated mono yarn ( 170 and 190 are larger than those of the insulating mono yarns 170 and 190 when weaving thicker than the flame retardant conductive yarns 150 in the weaving. 150) there may be a spark between the electrical spark generated, there is a risk of fire. Good electrical contact of the flame-retardant conductive yarn 150 for electrical safety to eliminate risk factors such as sparks.

Referring to the configuration of the electrode unit 200 of the planar heating element according to the present invention in detail, as shown in Figure 8, constitutes a conductive wire pair 220, 230, 240, 250 located inside the electrode unit 200 The two conductive wires of each pair are divided into up and down periodically at regular intervals to be electrically contacted with adjacent left and right pairs, and then the two conductive wires are converged to three.

Weaving 0.12Ø * 7 strands of lime-plated copper wire into 3 or more parts of each section and center at 8 sections or more.For example, when 12 sets are used, two sets of 12 sets are used to construct the electrode part 200. 6 sets (210, 220, 230, 240, 250, 260) are formed to be 1 set, and 4 sets (220, 230, Since 8 wires of 240 and 250 are periodically alternated up and down at regular intervals and electrically contacted with adjacent pairs on the left and right sides, the two conductive wires are woven into an electrode structure that is woven into an intimate structure of 3 where the two wires converge again. It sticks like a single wire and has a larger capacitance than other parallel woven electrode heaters.

In addition, the feature of the reticulated wire heating element according to the present invention adopts a method in which the electrode unit 200 supplies power through three points of terminals instead of two. The heat generating amount of all the planar heating elements is changed by the width of the electrode. The narrower the electrode, the larger the heating value. When weaving a wide heating element, a large amount of flame retardant conductive yarns 150 are used, but if the amount is increased, the structure of the mesh form cannot be expected. Three-wire connection is a form that can reduce the amount of flame retardant conductive yarn 150, and another feature is that it can be controlled by two voltages through one product. For example, if you design a 100cm × 100cm heating element with a voltage of 220V and a power of 200W (power is closely related to the amount of heat generated) with a flame-retardant conductive yarn 150 having a resistance of 10㏀ at 10cm, 2 In the case of the wire-connected heating element, a resistance of (power) = (voltage) ² / resistance = (voltage) ² / power = 48400/200 = 242 kW is required to produce 100 kW and 200 W of one strand of resistance. The flame-retardant conductive yarn 150 according to the present invention is required to be 100 병렬 / 242 ㏀ = 100,000 Ω / 242 414 strands because it is arranged in parallel between the electrodes. However, in the case of 3-wire connection, it is as if two sheets of 50cm × 100cm are connected, and since the flame retardant conductive yarn 150 is a weft yarn, the number of strands need only be calculated by one width. Therefore, in order to give 100W for 1 width, the above formula requires a resistance of 48400/100 = 484Ω. Since it is 50cm, 50Ω / 484Ω = 50000Ω / 484Ω = 103.3 strands and the number of strands should be an integer, so only about 104 strands can be used, which reduces the number of strands to 1/4 by using the same flame retardant conductor 150. This also has the effect of reducing costs. In this case, the same amount of heat is produced when the 220V power is connected to the 3-wire connection and the 440V 2-wire connection is performed. In the above example, in the case of the 2-wire connection, the flame retardant conductive yarn 150 having 10 ㏀ is calculated as having 104 strands with a width of 100 cm, in which case 10 ㏀ * 10 (the 10 cm has a resistance of 10)) Since it is 100㏀ and it is 100000Ω and it is parallel, it is a heating element having resistance of 100000Ω / 104 strand ≒ 961.54Ω when divided by the number of strands. Since 440V is applied, using the above formula, power = (voltage) ² / resistance, (440) ² /961.54=193,600/961.54≒201.34W. This effect can be suitably used for a vehicle article or the like. At present, the small car uses a 12V battery and a large 24V battery. The planar heating element according to the present invention can produce a heating element of a 12V 3-wire connection and can be converted into a 24V 2-wire connection product if necessary.

According to the present invention, since the inclined portion and the weft portion form a mesh structure due to the combination of the plain weave and the weft weave, it is light and has excellent form stability by itself, and uses a flame retardant conductive yarn coated with a special flame retardant on the conductive yarn surface as a weft yarn. It is not burned well, and the flame retardant conductive yarn is melted and cut automatically at high temperature of 180 ℃ or more, and designed to be safer against fire.The flame retardant conductive yarn is thicker than the insulated mono yarn, so there is no spark between the electrode part and the flame retardant conductive yarn. It is not provided, and in the plain weave of the weft, it is in a form protected by two strands of insulated mono yarns with a flame-retardant conductive yarn between them, so that the thickness of the liquid resin coating can be thickly coated. Excellent moisture resistance, no risk of short circuit, good elasticity It has no steaming and has a reticular structure, so it has good drainage and can solve the problems of near-field heating and underwater space heating in agriculture and fishery. It is very suitable for laying of civil engineering works, and can be used for concrete curing and laying of roads. The three-way junction electrode has excellent power supply capability, and a three-wire connection of the electrode portion can provide a reticulated wire heating element having separation heating and free bolt use capability.

Claims (8)

A warp section comprising one set of first and second insulated mono yarns, and a weft section of one set of third and fourth insulated mono yarns arranged in close contact with both sides of the flame retardant conductive yarn and the flame retardant conductive yarn in the longitudinal direction. And the inclined portion and the weft portion is a heating part of the mesh structure of the weaving combined weaving plain weave and yarn weave; and A strip-shaped electrode portion in which a plurality of conductive wire pairs are tightly woven in the plain weave with the weft portion in both sides and the center of the heat generating portion as one pair of inclined conductive wires, and each conductive wire pair is formed inside the electrode portion. Reticulated wire surface comprising two electrode wires of three-piece junction structure in which two conductive wires are periodically branched up and down at regular intervals to be electrically contacted with adjacent pairs of left and right, and then the two conductive wires converge again. Heating element. The reticulated vessel according to claim 1, wherein the female weave is any one selected from the group consisting of three rolls of plain weave, three rolls of resignation, five lays of weaving after five plain weaves, and seven rolls of resignation of seven weaves after plain weave. Heating element. The reticulated surface heating element according to claim 1, wherein the third and fourth insulating mono yarns are thinner than the flame retardant conductive yarn. The method of claim 1, wherein the flame-retardant conductive yarn is coated with a paint containing any one or more selected from the group consisting of bromine-based, phosphorus-based, halogen-based and inorganic powder in order to impart flame retardancy to ordinary fiber yarns. Reticular heating element. The reticulated wire heating element according to claim 4, wherein the inorganic powder is made of antimony oxide or magnesium oxide. The method of claim 1, wherein the flame-retardant conductive yarn is a synthetic fiber yarn with a melting point of 180 ℃ to 250 ℃ Automatically melt cut when the heat generated in any part is 180 ℃ or more when the electricity is applied or by the self abnormal heat generated to stop the electricity supply Reticulated surface heating element, characterized in that The reticulated wire heating element according to claim 1, wherein the conductive wire is twisted by twisting seven strands of copper plated copper wire having a diameter of 0.12 mm. The reticulated surface heating element according to claim 1, wherein the plurality of tanks are eight or more tanks.

Images