KR20150117245A - Heating cable - Google Patents

Abstract

The present invention relates to a heating cable for emitting heat by applying electricity, a method for manufacturing the same, and a method for setting a heating cable to effectively save electricity. The present invention is to manufacture the heating cable which is safer and has excellent durability by solving a disadvantage that a conventional heating cable has and, more particularly, to the heating cable consisting of a heating line for emitting the heat by the electricity, an intermediate material which protects the heating line, and performs a function of decreasing temperatures by effectively diffusing the generated heat to the outside, and an envelope for protecting the same. According to the present invention, the method for manufacturing the heating cable comprises the following steps: firstly covering (110) a heating line with a fibrous insulating material by winding and weaving, on the heating line, the fibrous insulating material which is not thermally deformed even under high thermal, and has high heat transmission to effectively diffuse the heat to an external surface so as to prevent the heating cable on the heating line (100) from being degraded and dissipated; secondly electrically insulating and covering the heating line with silicon, Teflon, urethane, etc. which are highly resistant to the heat, and insulative to moisture and the electricity; and completing a product by further covering the same with a third envelope, a glass cloth woven body (140) which is made by integrating silicon or urethane and glass fiber, and weaving the same to be resistant to water, and insulative to the electricity, and to endure the external physical impact, or covering the same with a metal envelop (130), and covering and coating the metal envelope (130) with paint (131) which is highly resistant to thermal and chemical corrosion in order to prevent the metal envelope from being corroded. Also, a wire mesh is further stacked on an upper part of the installed heating cable when installing the heating cable to effectively save the electricity.

Description

Heating cable {HEATING CABLE}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a heat generating cable that generates heat by flowing electricity, a method of manufacturing the same, and a method of effectively installing a heat generating cable so as to save electricity.

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a heat generating cable that generates heat by flowing electricity, a method of manufacturing the same, and a method of effectively installing a heat generating cable so as to save electricity. More specifically, To an exothermic cable comprising an intermediate member that functions to effectively diffuse generated heat to the outside and a sheath for protecting the intermediate member. The heating cable is used for general purpose and industrial use. For general use, it is used for heating mat, Ondol bed, floor heating and roofing of plastic house. For industrial use, it prevents freezing of various pipes and tanks, And the use thereof is increasing more and more. The heating cable can be roughly classified into three types: the one made of a synthetic resin such as silicone, teflon, urethane which has a strong outer shell and insulation, and a shell made of metal, and the insulator is made of a synthetic resin such as silicone teflon urethane .

According to the prior art, a type of the outer cover made of synthetic resin such as silicone or urethane is formed by covering the outside of the heating wire with heat-resistant silicone, Teflon, urethane or the like as shown in FIG. 1, Which is wrapped in multiple layers. The heat generating cable of FIGS. 1 and 2 is suitable for mass production but has a disadvantage in that it is limited in use because it has a technical disadvantage that it is insensitive to external physical impact and can not generate heat at a temperature of about 270 DEG C or more. In addition, as shown in FIG. 3, a heating cable type having a metal jacket is formed by inserting a heating wire into a metal pipe, filling an insulator made of a mineral component such as magnesium oxide, glass fiber, or silica between the heating element and the metal pipe, sealing, , Drawing, etc., and the manufacturing process is complicated, and the mineral component used as the insulator has a great risk of leakage when the insulation is broken, and the metal of the shell is easily corroded by various chemicals which come into contact with the outside, It has been pointed out that both ends where the heating element is connected to the electric wire are difficult to seal and connect to each other so that insulation breakdown and disconnection do not occur.

As a conventional heating cable type, a heating wire is inserted into a metal pipe, and then an insulator made of a mineral component such as magnesium oxide, glass fiber, or silica is filled between a heating element and a metal tube, And drawing, etc., and prior arts such as U.S. Patent No. 4,998,341 and U.S. Patent Nos. 4,739,155, 4,769,529, 4,392,051, and 4,345,368 are disclosed, but all of the insulators are made of a mineral powder insulator . Domestic patented technology is made of synthetic resin such as silicone and urethane. It has heating cable registration number 1009024020000 to prevent freezing, and the heating cable type which has metal jacket is heating cable patent No. 10-0756013, heating insulated with Teflon Cable registration No. 1005272780000, metal heating element of electric under-floor heating apparatus Utility Model Registration No. 20-0415448 Joule heater, glass fiber-insulated heating cable Publication No. 1999-0032978, heating cable of aluminum alloy coating method and its manufacturing method Registration No. 1008793710000, Have been disclosed and used as patents.

The heating cable has various disadvantages due to the structural characteristics of each of the three types. The disadvantages are listed as follows.

(A type of insulator or sheath made of synthetic resin such as silicone or urethane), and the type of Fig. 2). Challenge 1: A type of silicon sheathed directly on a heating line or a type of thermoplastic sheath directly on a heating line, A kind of silicon-coated wire on a heating wire, a glass fiber on a heating wire or a wire, and a wire coated with silicone again after heating the wire again. However, since the outer skin is weak against external physical impact, And a short circuit caused by insulation breakdown occurred frequently.

Problem 2: When the heat generated due to the use conditions is not smoothly discharged to the outside due to the low thermal conductivity of silicon, Teflon, etc. used as the insulator, the temperature of the heating wire rises and the insulator is deteriorated and burned do.

Therefore, although it is manufactured within a low temperature range in which an insulator can withstand and can not generate heat at a high temperature, its use is limited. However, since the insulator may be deteriorated and burned depending on the use environment, accidents such as fire and breaking occur frequently Respectively. For this reason, the current trend is to prefer a heating cable made of metal.

(Type of metal with shell of insulator such as magnesium oxide, glass fiber minerals kind (MI cable))

Challenge 3: This type of heating cable is made of fiberglass or mineral fiber that is used as a heat transfer material between the heating wire and the metal sheath. It is left in the metal tube due to the lack of electrical insulation against moisture. It is difficult to completely isolate the organic material because it changes into a conductive carbon after the organic material is born. In addition, there is a fatal flaw that can easily lead to short-circuiting and disconnection if the insulation is easily broken by moisture or the like, and only the metal sheath is damaged.

Challenge 4: Mineral elements and glass fibers are not insulated against moisture, and both ends connected to the heating wire (100) are very difficult to seal and connect so that insulation breakdown and disconnection do not occur. The heating cable should be supplied with electricity at both ends. If the metal shells at both ends are disconnected to connect the heating wire and the electric wire, the minerals that do not have insulation function will be broken down into powder and the glass fiber will be loosened. The metal heating wire is exposed to a predetermined length so as to be fixed against electrical insulation and heat generated from the electric wire and the moisture after connection. In this case, a high temperature is generated in the exposed heating wire 100 and the expansion and contraction Due to the nature of the part, electrically isolated sealing is technically very difficult. More than 60% of the defects that occur during the installation and use of the product are short-circuiting and disconnection of this part.

    Challenge 5: The metal shell is easily corroded and easily punctured by various chemicals that come in contact with the outside. Nearly all metals become corroded over time. The speed depends on the type of metal and environment. In particular, the metallic shell of the heater is repeated at a high temperature, so that the corrosion rate is several tens times higher than the general corrosion rate, and when it comes into contact with the gravel containing the sulfur containing salt, the corrosion is promoted and the perforation easily occurs. This heating cable (MI cable) type is a fatal defect that is caused by short-circuiting and disconnection due to corrosion of the metal sheath because there is only minerals such as glass fiber, magnesium oxide and the like which have no electric insulation function against moisture between the heating element and the metal sheath .

(The insulator is a kind of metal, the type of which is silicon, Teflon, urethane)

There are two disadvantages: Challenge 2 and Challenge 5.

Challenge 6: When using the heating cable in the floor heating, install the heating cable at about 200MM to 250MM, then pour the cement mortar from about 40MM to 250MM thick. The thicker the heating cable, the longer it takes to get hot. Energy is the effective efficiency with the utility actually used. The efficiency is 100% when it is turned on when it is used as a lamp and when it is turned off when it is used. However, since the floor heating basically shows the heating effect after heating the bottom cement, the thicker the floor, the more time it takes to warm up and the effective energy efficiency decreases. In order to use the heating space for one hour, electricity is applied 3-4 hours before, so the heating effect is required to advance the heating so that the energy consumption is increased. For this reason, it is preferable to install the cement mortar with a thickness of about 40mm or less, but the disadvantage is that it is only warm near the heating cable, and the heating cable and the heating The space between the cables is not heated to about 150MM, and the cement mortar itself is thin, so cracks are easily generated and broken.

The heating cable is made of cable and can bend easily, and can be made without connection parts weak in insulation with a length of several tens of meters to several hundreds of meters, which is advantageous in that it can be installed and used in various places. There are disadvantages that the heating cables currently used fall under the above-mentioned solutions for the three types. In order to solve the above-mentioned disadvantage, the present invention solves the problem 1 in which silicon or urethane and glass fiber are integrated with the heating wire 100 coated with silicone, Teflon, urethane, (120) or the like, The fabric is finished by covering the glass fiber weaving body 140 made of woven fabric so as to withstand the metal shell 130, or covering the metal shell 130. In order to solve the problem 2, the glass fiber is wound on the heating wire 100, and the glass fiber is again woven on the glass fiber to be covered 110. Glass fiber has no thermal deformation even at high temperature and has high thermal conductivity, so it is effective to transmit and diffuse the high heat of the heating wire effectively to the outer surface.

To solve Problems 3 and 4, glass fiber is woven to cover the heating line with insulating material such as silicone, teflon, urethane, etc. which is a heat resistant moisture electrical insulator. In order to solve the problem 5, the metal sheath 130 is coated with a paint 131 resistant to heat and chemical corrosion. In order to solve the problem 6, when the heating cable is installed, a wire mesh (wire mesh) is laminated on the heating cable installed as shown in FIG.

 Electricity is very convenient energy to use compared with coal gas oil gas. Electric heating elements are increasingly used and used more and more, and heating cable is a future type electric heating element which is still under development and development. The heating cable is made of cable and can bend easily, and can be made without connection parts weak in insulation with a length of several tens of meters to several hundreds of meters, which is advantageous in that it can be installed and used in various places. Because of these advantages, it is widely used for household appliances and industrial use, but accidents such as fire and short circuit breakage are frequently seen. The present invention finds out the cause of frequent occurrence of accidents such as fire and short circuit in heating cable, and develops a new type of heating cable with high productivity which does not have such a cause, so that safety and durability The new type of heat generating cable is produced and supplied at a low cost.

1 shows a conventional silicon heating cable,
2 is a schematic view showing a conventional synthetic resin type heat generating cable,
Fig. 3 shows a conventional heating cable insulated with glass fiber,
Figure 4 shows a conventional Teflon insulated heating cable,
5 is a view for explaining a heat generating cable according to an embodiment of the present invention,
6 is a view for explaining another embodiment of the heat generating cable according to the embodiment of the present invention,
7 is a view for explaining another embodiment of the heat generating cable according to the embodiment of the present invention,
8 is a view for explaining an experiment of a heating cable according to an embodiment of the present invention,
9 is a view for explaining an experiment of a heating cable according to another embodiment of the present invention,
FIG. 10 is a view for explaining a use state of a heat-generating cable according to an embodiment of the present invention connected to another cable using a silicon tube; FIG.
FIG. 11 is a view for explaining the coating of a heating cable paint according to an embodiment of the present invention,
12 is a view showing an experimental example of a heating cable according to an embodiment of the present invention,
13 is a view for explaining a floor heating system using a heating cable according to an embodiment of the present invention;
14 is a view for explaining a method of manufacturing a heat generating cable according to an embodiment of the present invention;
15 is a photograph of a sample of various embodiments of a heating cable according to an embodiment of the present invention.

In order to solve the problem No. 1, a glass fiber weave body made by weaving a silicon or uranate and glass fiber integrated with a heating element coated with silicone, teflon, and urethane to be able to withstand waterproofing, insulation and external physical impact, To cover the product, or to cover the metal sheath. This is to make the outer surface of the heating element to withstand waterproofing, insulation and external physical shocks. Put the liquid state, silicone, uranthan, teflon, etc. into the barrel, immerse the glass fiber or metal yarn in the barrel, This is because the silicone is soaked in the outer surface of the woven fabric is waterproof, insulation and strength is also strong. The finished cable of the present invention is laminated in the following order: a heating wire 100, a 2-type insulating material 110, an insulating material 120, a protective covering 140 or a metal woven fabric 141. It is solved the problem 1. The finished product is shown in Fig. 1 and Fig. 6 of Fig.

In order to solve the problem 2, the glass fiber is woven on the heating line and the glass fiber dipped in the liquid silicon is woven again on the heating fiber.

1, FIG. 2, FIG. 3, and FIG. 4, and the apparatus of the present invention so as to attach the ultrahigh-precision infrared spectroscopic temperature measuring apparatus, and the respective temperatures were measured. The test conditions were such that the heating cable purchased had a heating of 100 W at 1M. Each product was precisely controlled by adjusting the length according to the resistance value and controlling the voltage in order to generate 100W of heat at 1M. Several pieces of each layer were removed from each layer so as to be able to measure the temperature of each layer, and they were installed in a constant temperature bath. The experiment was carried out at room temperature of 22 degrees Celsius and the experiment was performed as shown in FIG. Experiments were performed several times to obtain average results and the results were summarized. Comprehensive experimental results are shown in the graph of FIG.

A is a silicon hot wire, and is of the type shown in Figs. 1 and 2. B is a Teflon heat line, which is of the type shown in Fig. D is a glass fiber heating wire, and is of the type shown in Fig. E is the MI heat wire and the insulator is a mineral powder insulator. In the graph of Fig. 12, the display of the temperature is a measurement of the temperature of the heating wire itself.

A was heated to 270 degrees in one minute, and the silicon was boiling, white smoke was generated, and all at 290 degrees with blowing. When the temperature of the heating wire 100 was 250 ° C., the temperature of the outer surface was 100 ° C. Thereafter, the silicon itself was lost and the outer surface temperature could not be measured. B is the kind shown in FIG. 4. In FIG. 4 of FIG. 4, Teflon turns transparent at 250 degrees, becomes gradually brown at about 320 degrees, cracks, and smokes at 450 degrees and disappears. Figure 2 of Figure 4 shows that the metal tube exploded, the internal silicon deteriorated and the volume was increased, resulting in pressure, which seemed to explode to the outer metal tube. C was stable to no more than 400 degrees Celsius and the temperature did not rise any further. D and E did not climb up to 300 degrees and were very stable. A and B in FIG. 6, silicon and Teflon 120, which directly surround the heating wire 100, are low in thermal conductivity, so that heat generated from the heating wire can not be radiated to the outside quickly, It can be judged that it is lost.

C, D, and E in FIG. 9 are minerals directly surrounding the heat ray 100, and glass fibers 110 are components that do not burn even in a high temperature of 800 to 900 degrees Celsius, and thermal conductivity is higher than that of silicon and Teflon It can be judged that the heat is rapidly diffused to the outside and the stable performance does not reach the high temperature. Also, C does not explode as shown in Fig. 4 in Fig. 4, because the silicon covering in the metal tube thermally expanded, and the space containing the glass fiber is accommodated by an increased amount, so that it does not appear to explode.

Conclusion: In Fig. 8, the external temperature was 100 degrees when the temperature of the heating wire was 250 degrees. The high heat of the heating wire could not be effectively diffused to the outer surface. It is for this reason that A and B products which are directly coated with silicone or Teflon on the heating wire frequently have accidents due to the overheating phenomenon. It can be judged that it is unreasonable to directly coat the heating wire with silicone or Teflon. As shown in FIG. 9, it is effective to cover the hot wire 100 directly with a fiber-type insulating material (110) mineral or glass fiber that does not burn at high temperature but has a high thermal conductivity and quickly diffuses the high heat generated from the hot wire to the outside can do.

(100) is directly connected with a fiber-type insulating material (110) which is not directly coated with silicone or Teflon on the heating wire but does not burn on the high temperature and has high thermal conductivity so as to rapidly diffuse the high heat generated from the hot wire to the outside. If you wrap it, you can solve problem 2. To solve Problems 3 and 4, glass fiber is woven and covered with a heat-resistant body, which is heat-resistant and covered with electrical insulators such as silicone, Teflon, and uranthan for moisture.

Solution to Problem 3: In FIG. 9, when the temperature of the heating wire 100 was 400 degrees, the temperature of the surface of the glass fiber coated with 1 mm thickness was 130 degrees. The reason for the heat loss is that as the thickness of the glass fiber increases, the surface area of heat emission increases sharply and the heat is dispersed. The diameter of the heating wire (100) used for the heating cable is about 0.1 to 1.2 mm in diameter. In Fig. 9, the length of the heating wire having a diameter of 1 mm is 3.14 mm in diameter X 3.14. The length of the fibrous insulating material 110 is 9.42 mm, which is 3 mm X 3.14 in diameter. When the length is 3, 14mm to 400degree, the temperature spreads by an increase amount of length when it spreads to 9.42mm, and becomes 133.333 degrees. This is because the heat is diffused and the temperature drops by the length of the increased surface area. When the temperature of the surface of the coated fibrous insulating material is lowered by 130 degrees, silicone, Teflon, urethane and coating which are thermally deformed at about 270 degrees can function within a stable temperature range and secure a stable insulating layer . Due to the insulating layer, the heat-generating cable in the present invention can be electrically isolated from moisture without requiring a heat treatment process. This confirms that the heating cable must be laminated in order of 1 heating element 2 fiber insulation 3 insulation material in order to be a safe finished product. This solves problem 3. The finished product is shown in Fig.

Solution to Problem 4: In the present invention in which the components constituting the heat generating cable are laminated in the order of 1 heating line 100, 2 fiber type insulating material 110 and 3 insulating material 120 as described above, As shown in Fig. 10, the insulation layer causes a gap-generating short-circuit problem in the glass fiber and the mineral insulation cable. When the coated silicon 120 and the filling silicon 120 of FIG. 2B have the same composition, the coated silicon 120 and the filling silicon 120 are completely welded with the same components, It is possible to effectively insulate the electrical insulation against the heat of the portion connecting the heating cable to the both ends of the cable to apply the weakest electricity in the cable and the electrically insulated sealing against the heat.

Fig. 10 shows a method of electrically insulating moisture from the heating cable more effectively by connecting the heating cable and the electric wire. The heating cable and the wire are crimped and connected by using a metal crimp connection tube, and then the silicon tube is inserted into the connection portion, and the silicon tube is filled with the liquid silicone to be insulated. Silicon filled between the connection site and the silicone tube is cured by contact with air through both ends of the silicone tube and the body. The solution to problem 4 is solved.

When a metal sheath is applied to a heating element coated with silicone, Teflon, or a urethane, etc., the coated heating element is put into a metal tube and is passed through a hole of a desired size and is pulled out. , Stainless steel, various metal alloys, and so on. Especially aluminum is most suitable because it can omit heat treatment process after drawing.

Pure aluminum is used in special places because it is too soft and too hard and generally sold in the form of alloy of SI and MG to enhance the strength to suit the application. Aluminum alloy content ranges of SI and MG are determined according to the usage of pipe drawing, window frame (shot shoe), sheet material, plate material, etc. For this reason, aluminum is not used for drawing pipes made of pure aluminum, for window frames (shot shoe), for planks, for plates, and aluminum for actual use in the aluminum market. Teflon insulated heating cable registration number 1005272780000 was produced in 2004 and was sold to the market after finishing a heating cable coated with metal sheath using aluminum pipe for drawing until 2009. Aluminum pipes produced for drawing are suitable for the present invention.

The crosslinked polyethylene, which is a material for making a hot water pipe for heating as a jacket, can be extruded and used in the heating cable shown in Fig. In addition, after inserting more than one strand of the heating cable shown in Fig. 5 in a cross-linked polyethylene tube (XL tube), the remaining space is filled with water, oil, insulating oil, liquid silicone, have. In order to solve the problem 5, it is to apply heat and chemical corrosion resistant coating to the metal shell.

In the present invention, a coating material is applied to a metal sheath. Teflon-based, silicone-based, urethane-based, ceramic-based, and the like, which are resistant to heat and can prevent corrosion of the metal and can form a high- And then aged by treating at a high temperature of 100 DEG C or higher. In Fig. 11, the heating cable is bundled into several layers like a thread, and even if it is arranged as a spring, it is shaped like a spring so that it is difficult to apply the inside of the spring shape, and when it is put in a container of the paint, It sticks to each other, falls off, leaves scraps, and becomes a mess. Also, as shown in Fig. 11 (A) of Fig. 11, when a paint is applied to a spring-shaped cable by spraying, an actual 80% is blown away. Thus, it is very difficult to apply a uniform coating of the multi-layer circular cable. The coating method of the present invention utilizes the principle that the distance of the cable is constantly spaced by the elasticity when the cable is wound and wound as shown in FIG. As shown in Fig. 11, it is prepared as shown in Fig. C, then placed on the floor, first, one side is sprayed, and then the other side is dried and turned upside down. This ensures that the cables do not close each other after application of the paint, so that the paint can be applied neatly. After the coating is applied, the product can be finished shipped through a high-temperature aging process. The solution to the problem 5 is solved. The finished product of the present invention is shown in Fig.

Manufacturing method: As a prior art, there is a manufacturing technology of heating cable insulated with glass fiber, No. 1999-0032978, heating cable of aluminum alloy covering method, and manufacturing method registration number 100879371000, as prior art. This manufacturing technology is for inserting a heating cable without a shell into a metal pipe. First, a metal pipe is made straight and then a work wire is wound and loosened. A warhead is attached to the end of the working wire, And then connecting the heating cable to the other end and pulling the heating cable again to insert the heating cable into the metal pipe. This method requires a very long work space of 100 m or more as long as the length of the metal pipe because the apparatus for firing the work wire is complicated and the metal pipe is warped so that the warhead and the work wire can not pass through. Therefore, The process is done. As another manufacturing method, patent application No. 125948 of 2009 shows that a thread is near to the end of a metallic outer tube, air is sucked from the opposite end, a threaded metal outer tube is pierced through the tube and the teflon sheathed wire It is to be inserted into the inside of the medallion metal exterior. Because this method uses a flexible thread, it can work in a bent state with a U-shaped W-shaped metal tube, which can reduce the working space. However, since the thread is tangled and tangled in the metal tube, the elasticity of stretching and shrinking when pulling the thread, And the yarn must be reciprocated to complete the work.

In the present invention, as shown in FIG. 14, a vacuum pump is installed at one end of the metal tube to connect the vacuum connection part to the inside of the metal tube so that the inside of the metal tube is evacuated, A heating cable is directly coupled to a warhead and inserted into a metal pipe for penetration. When the material of the warhead is inserted into a metal pipe in a state of being soft like a jelly, the resistance of the warhead due to the heating cable coupled to the warhead or the resistance caused by the U-shaped or W- Since the vacuum is further strengthened by the vacuum pump to suck the warhead, the warhead advances toward the vacuum pump regardless of the length of the metal tube, leading to the end of the metal tube. The speed of the warhead should be controlled by varying the degree of vacuum of the vacuum pump, and a wire mesh should be installed in the vacuum connection to prevent the warhead from being sucked into the vacuum pump and breaking the vacuum pump. In this method, since the heating cable is directly attached to the warhead, if the warhead penetrates the metal pipe, the process of inserting the heating cable into the metal pipe is completed. In this manufacturing method, if only one vacuum pump and several warheads are used, Since the work is completed by the work of the process, the work can be continuously performed, and the work can be performed even when the metal tube is bent or curved, so that mass production can be performed in a narrow working space. In the actual production, the process time is about 6 to 10 minutes for the process of preparing the heat generating cable, from preparation to completion of the metal pipe when the metal pipe is 24 m, whereas the present invention can be completed in 1 minute and 20 seconds there was.

Construction method: In order to solve the problem 6, when the heating cable is installed, a wire mesh (wire mesh) is laminated on the heating cable installed as shown in FIG. In FIG. 13, the installation interval of the cable heater is 250 MM. If you increase the thickness of the cement mortar to 25MM - 200MM, if you increase the thickness to 200MM, there will be almost no heat transfer part. There will be no cracking and cracking, but it takes much time to heat the cement mortar to 200MM. Consumption will increase.

In order to reduce the energy consumption, it is preferable to make the thickness thinner to 25MM-30MM. However, this causes the cracks in the cement to be broken and the heat transmission is not generated as shown in FIG. In order to prevent cracks and breakage even when the thickness of the cement mortar is reduced to 25MM-30MM, the A wire mesh (grid wire mesh wire mesh) shown in Fig. 13 is additionally installed. A wire mesh (wire mesh) strengthens the strength of cement to prevent cracks and breakage, and has excellent thermal conductivity, so that the heat generated from the heating cable can be spread laterally, thereby eliminating a region where no heat transfer occurs. As a result of the actual experiment in the above temperature test, it is effective that the distance between the wire and the wire is narrow in the wire mesh (wire mesh). However, the interval of about 50 mm is most preferable from the viewpoint of economy and effectiveness.

In the floor heating system where electricity is applied to the heater and the electric heater is installed directly on the floor, the general construction method is as follows: 1: Slab, 2: Bubble cement application, 3: Insulation 5mm installation, 4: Wire mesh installation 1: Slab, 2: Bubble cement application, 3: Insulation material: 1: Slab, 2: Bubble cement application, 3: Insulation material (Wire mesh) installation, 5: installation of electric heater (pipe heater, excel pipe heater, heating cable), 6: installation of wire mesh (wire mesh), 7: application of finishing cement Laminate construction. It is the resolution of the problem 6. The completed construction method of the present invention is shown in Fig.

The exothermic cable is made of a flexible structure so that it can be freely deformed and installed in accordance with the use conditions. Due to these characteristics, it can be considered as a future electric heating body which is being used for various purposes ranging from household electric heaters to industrial heaters requiring heat.

100: Heating cable (metal or carbon fiber heating cable)
110: Fiber type insulating material (glass fiber, silica fiber, high temperature chemical fiber, etc.)
111: Polymer for insulation
112: High temperature synthetic resin
113: metal woven fabric
114: PVC sheath
120: Insulation material (silicon, Teflon, urethane, etc. insulation)
121: Silicon
122: Teflon
130: metal tube
140: Protective sheath (woven with silicon, teflon, urethane, etc. and fiber-type insulation material integrated)
141: Metal cloth weave cover
150: Corrosion preventing paint such as silicone, Teflon, Ceramic
160: Heating cable (heating wire - fiber-type insulation material - coated in the order of insulation material)
170: Vacuum pump
180: Flexible warhead

Claims (11)

A heating wire 100 which generates heat by the electric power applied to the heating cable,
A heat-resistant fiber-type insulating material 110 that covers and insulates the heating wire, and that dissipates heat generated from the heating wire to the outside to lower the temperature;
The fibrous insulating material is coated with an insulating material 120 to prevent dielectric breakdown by external moisture. The insulating material 120 is coated and laminated in the order of a heating wire, a 2-fiber insulating material, And the insulating material (120) is prevented from being deteriorated by the temperature of the heating cable (110). The heat-generating cable according to claim 1, wherein the heat-generating cable (160) is further coated with a protective covering (140) or a metal woven fabric (141). The heating wire 100 of the heating cable is a constant temperature heating wire which does not rise above a certain temperature due to an increase in resistance when the temperature rises and that the heating wire 100 is formed by winding one strand or two strands of the heating wire 100 with a fiber- A heating cable characterized by repetition. The heat generating cable according to claim 1, wherein the heat generating cable (160) is overlaid with a cross-linked polyethylene. It is preferable that water, oil, urethane, insulating oil, liquid silicone, liquid silicone hardened after injecting an Excel tube, and the like are further filled between the heating cable 160 and the crosslinked polyethylene (excel) tube as a heat transfer material Featuring thermal cable. Wherein the heating cable is coated with a paint on a surface of an outer shell metal tube. [7] The paint as set forth in claim 6, wherein the paint is a high temperature coating material such as a Teflon-based, silicone-based, urethane-based, ceramic-based or powder-like material, and the paint is cured at a high temperature aging process of 100 ° C or higher. [7] The method of claim 6, wherein the application of the coating material is performed by winding the heating cable radially from the inside to the outside so as to form a spiral disc shape, and then applying the coating material. A vacuum pump 170 is connected to one end of the metal tube 130 to generate a vacuum phenomenon inside the metal tube and a soft flexible warp 180 corresponding to the inner diameter of the metal tube is inserted into the other end So that the heating cable is inserted into the metal pipe (130). In the floor heating where electric power is applied to the heater and the electric heater (pipe heater, heat pipe, heater cable) is installed directly on the floor, the strength of the cement is strengthened on the electric heater, And a wire netting is further laminated on the heating cable. In the heating cable, the connection of the electric wire for applying electric power to the heating cable,
The connecting part is covered with a silicone tube, the liquid silicone is injected into the inside of the silicone tube, and the liquid silicone is contacted with the air passing through the silicone tube coated with the liquid silicone, Featuring thermal cable.

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