KR200219004Y1 - Electric heating panel using current-uniforming band and carbon powder which consist of shell-type particles - Google Patents

Abstract

The present invention relates to an electric current heating band using an electric current uniforming band and a hexagonal plate-shaped carbon in which a current uniformity band made of metal is impregnated in a conductive paint coating layer in which hexagonal plate-shaped carbon particles are dispersed, thereby minimizing the heat generation temperature variation of the entire ondol panel. will be.

In the electric ondol panel of the present invention, the waterproof insulating layer 12 is coated on one surface of the wood plate 11, and electrodes 13A and 13B are provided at both ends of the upper surface of the waterproof insulating layer 12. A metal current equalization band 14 having a thickness of 0.1 to 0.5 mm and a width of 5 to 20 mm is provided between the two electrodes 13A and 13B so as to be parallel to the two electrodes 13A and 13B. The conductive paint layer 15 is formed to a thickness of 0.2 to 0.5 mm so that the electrode and the current equalization band are impregnated on the upper surface of the insulating layer 12 provided with the water-resistant insulating layer 16. ) Is wrapped around the structure, there is a technical feature of the present invention to use the hexagonal plate-shaped carbon particles and the current equalization band.

The electric ondol panel according to the present invention uses hexagonal plate-shaped carbon particles and a current equalization band to minimize the temperature variation of the entire panel to enable uniform heating, and the weight of the entire panel is remarkably increased by using the substrate of the panel as wood. It is not only easy to transport and install the ondol panel, but also has excellent shock absorption, making it suitable for floor heating in general residential buildings as well as floor heating in classrooms, kindergartens, nursery schools, churches, and restaurants. Do.

Description

Electric heating panel using current-uniforming band and carbon powder which consist of shell-type particles}

The present invention relates to an electric heating floor for floor heating, and more particularly, a conductive paint containing carbon in the form of a hexagonal plate, which is very thin in thickness compared to the width and length, is coated on one surface of the wooden board as a heating element, and the coating layer of the conductive paint The present invention relates to an electric ondol panel using a current homogenizing band and a hexagonal plate-shaped carbon in which metal current equalization bands are impregnated at regular intervals to minimize the exothermic temperature variation of the entire ondol panel.

In addition to improving living standards, as conventional heating fuels change from coal to oil or gas, the traditional ondol disappears and a radiator is used to heat the room air, or to install a hot water pipe on the floor to achieve the effect of conventional ondol. Heating is carried out by heating.

However, the heating method not only has a disadvantage in that fuel costs are higher than that of coal, it is cumbersome to install and maintain hot water pipes required for heating, and deterioration in heating efficiency due to ageing of pipes is inevitable with time. In addition, when heating is required for a short time in a season other than winter, there is more inconvenience in consuming fuel per unit time than in the case of continuous heating in winter, and there is an inconvenience of having to operate a heating device for short heating. There is also the administrative hassle that an individual must check and replenish the amount of fuel.

Therefore, an electric floorboard using a heating wire has been developed for auxiliary heating, and further, an electric ondol panel and an electric concrete, which are easy to install on the floor and can be heated without the hot water pipe and the boiler, have been developed.

However, in the case of the electric sheet, the physical properties of the outer skin such as synthetic resin or synthetic fiber are not easy to damage the outer skin itself, and there is a risk of leakage or fire due to breakage or short circuit of the heating wire. There is a disadvantage in that even heating occurs in a large amount and uniform heating is not possible due to the heating wires arranged at regular intervals, it is only used within a limited range for auxiliary heating.

In Korea, where sedentary living is the main lifestyle, heating is preferred, such as traditional ondol, which has developed various ondol panels and heat-concrete concrete for easy installation and easy management. There are the following problems.

In the case of a hot water panel paneled with a conventional hot water pipe, it is more convenient in terms of installation and maintenance than a conventional hot water pipe installation method, but requires a boiler and external connection piping to operate the hot water panel, and seasonal heating according to the boiler operation. Besides the difference in efficiency, boiler management and the possibility of water leakage in hot water pipes are very similar to the conventional hot water pipe installation method.

Although a heat-transfer panel having a heating wire attached to the foamed resin layer is disclosed in Korean Utility Model Publication No. 94-2244, this heat-transfer panel lacks the strength of the foamed polyurethane and can easily be damaged by external impact and pressure. The upper plate composed of iron plate is corroded by moisture impregnation or plastic deformation due to external load, so that the overall appearance cannot maintain the initial flat plate shape. In addition, there is a disadvantage in terms of environmental and recycling in accordance with the use of foamed polyurethane resin.

In addition, in the case of electrically conducting concrete plate, it has various advantages in heating the entire floor using electricity, but its own weight is not only heavy due to the characteristics of concrete, and it is particularly vulnerable to external impact, and the plate is warped by moisture absorption or heat. Deformation, etc. may occur, and it is not easy to adjust the thickness and amount of carbon incorporated into the conductive concrete plate for the heating temperature and temperature uniformity of the entire plate.

In addition, although a method for manufacturing a conductive heating element is disclosed in Korean Patent Publication No. 94-1521, this method uses spherical carbon particles to make the bonding structure of the carbon particles in point contact so that the conductivity becomes poor. Therefore, in order to impart proper conductivity to the conductive heating element, a larger amount of carbon particles should be used than when the carbon particles are in surface contact.

Korean Utility Model Publication No. 99-1627 discloses an electrothermal paint ondol heating device, which is formed by forming an exothermic coating film made of carbon powder or the like between electrodes attached to both sides of an electrical insulating film. As it increases, there is a disadvantage that the heating temperature deviation for each location increases.

A common disadvantage of the conventional panel-type ondol heating apparatus discussed above is a variation in floor temperature, and in the case of a pipe type, a temperature difference between a place where a pipe passes and a place where a pipe passes does not necessarily occur.

In the case of using carbon powder, the electrical conductivity is reduced by the point contact bonding of the carbon particles by using spherical carbon particles, and as a result, a large amount of carbon particles must be used to obtain a predetermined conductivity. In addition, since the carbon powder impregnated in a binder such as a synthetic resin cannot be substantially completely uniformly dispersed, the resistance value of each ondol panel is changed, which is smaller than the piping type, but this method also inevitably generates a temperature deviation.

As described above, the present invention is to solve various problems of the conventional ondol heating panel, and minimizes the temperature variation of the entire ondol panel by using a heat transfer paint composed of hexagonal plate-shaped carbon particles and a metal current equalization band. And, by making the substrate coated with the heat-transfer paint is made of wood, the object of the present invention is to provide an electric ondol panel that is strong against impact and easy to install.

1 is a partially cutaway perspective view of the present invention ondol panel.

Figure 2 is a cross-sectional view of the present invention ondol panel.

3 shows carbon particles dispersed in a conductive paint layer,

(A) is a partial schematic diagram showing the dispersion form of spherical carbon particles.

(B) is a partial schematic diagram which showed the dispersion form of the hexagonal plate-shaped carbon particle.

Figure 4 is a conceptual diagram showing the current flow of the present invention ondol panel.

((Explanation of symbols for main part of drawing))

1.Electric Ondol Panel 11.Wood Board

12,16. Waterproof insulating layer 13A, 13B. electrode

14. Current equalization band 15. Conductive paint layer

31. Spherical carbon particles 32. Hexagonal carbon particles

The above object of the present invention is to provide a substrate for electric ondol panel, carbon powder composed of carbon particles in the form of fine hexagonal plate, metal current equalization band impregnated in a conductive paint coating layer containing carbon powder, and It is achieved by vibrating operation of the substrate which is carried out after painting.

The electric ondol panel of the present invention is composed of a wood plate of the substrate on which the coating coating layer is formed, thereby reducing the weight of the ondol panel, improving the absorption capacity against external impact, and excellent thermal insulation and insulation in terms of wood properties.

The conductive paint is a mixture of carbon powders composed of hexagonal plate-like particles in a synthetic resin mixture obtained by mixing a solvent, such as thinner, with a synthetic resin such as polyester, epoxy, polyamide, and silicone, and is used horizontally and vertically. Compared with the technical features of the present invention, the use of carbon particles in the form of a hexagonal plate is very thin and can not be upright compared to the thickness.

The hexagonal plate-shaped carbon particles are uniformly distributed in a state of collapse in the synthetic resin mixture having a very low viscosity, so that unlike the spherical carbon particles that are in point contact, the carbon particles maintain a surface contact state and thus a small amount of carbon. Particles can also ensure proper electrical conductivity.

However, it is practically impossible to disperse the hexagonal plate-shaped carbon particle distribution so as to be completely uniform throughout the ondol panel. Therefore, the electric current flowing through the entire ondol panel is changed according to the position of the inside of the panel by the resistance value whose magnitude varies depending on the position according to the degree of dispersion of carbon. Differences occur, which results in an uneven temperature distribution of the ondol panel.

Therefore, in order to minimize the above-mentioned temperature deviation, at least one electric current uniformity band is impregnated in the conductive paint between the electrodes installed at both ends of the panel according to the size of the panel so as to be perpendicular to the current flow direction. There is another technical feature of the panel.

That is, the current whose magnitude is changed by the minute conductivity difference of the conductive paint according to the position of the direction perpendicular to the flow direction of the current flowing from the one electrode to the other electrode (hereinafter, 'width direction') is different from that of the current equalization band. The uniformity within the current equalization band at the time of contact minimizes the variation in the magnitude of the current in the width direction where the current in the width direction gradually increases while flowing from one electrode to the other electrode. Therefore, the heat generation amount and temperature difference according to the panel position is almost uniform.

In addition, the inventive electric ondol panel has at least one current equalization band disposed on the surface of the wood substrate before coating the conductive paint at regular intervals between the two electrodes, but parallel to both electrodes so as to be perpendicular to the current flow direction. By placing and applying sufficient vibration to the substrate immediately after coating the conductive paint thereon, the technical characteristics are that the hexagonal plate-like carbon particles contained in the conductive paint are more uniformly dispersed and laid down.

The purpose and detailed technical characteristics and effects of the present invention will be clearly understood by the following detailed description with reference to the drawings showing preferred embodiments of the present invention.

A partially cutaway perspective view of the inventive electric ondol panel is shown in FIG. 1 and a sectional view in FIG. 2.

As shown in the drawing, the electric ondol panel 1 of the present invention is coated with a waterproof insulating layer 12 on one surface of a wood board 11 such as a general wood board, plywood, or MDF. 13A and 13B electrodes 13A and 13B are formed at both ends of the upper surface of the waterproof insulating layer 12, and at least one metal current equalization band 14 is formed between the two electrodes according to the size of the wood plate. And a conductive paint layer 15 uniformly dispersed with carbon powder composed of hexagonal plate-shaped carbon particles so as to be impregnated on the upper surface of the insulating layer 12 to which the electrode and the current equalization band are attached. ) Is formed, and the waterproof insulating layer 16 surrounds the entire surface of the panel formed up to the conductive paint layer.

At this time, looking at the role of the hexagonal plate-shaped carbon particles, which is also a feature of the present invention ondol panel as follows.

In the case of using the carbon powder composed of spherical carbon particles 31 as shown in Figure 3, the contact form between the particles is in the form of a point contact form, the conductivity is low, a large amount of carbon powder is required, but in the form of a hexagonal plate In the case of the carbon particles 32, the contact between the particles is in the form of surface contact, thereby improving conductivity.

The conductive paint in which the carbon powder composed of carbon particles in the hexagonal plate shape is uniformly dispersed is composed of a synthetic resin, a solvent, and the carbon powder. However, the conductive conductive layer, which has been finally formed, is dried by evaporating the solvent, thereby drying the synthetic resin and carbon. It becomes a composite of powder and the thickness is 0.2-0.5 mm.

The resistivity value of the conductive paint layer constituting the electric ondol panel using the current equalization band and hexagonal plate-shaped carbon of the present invention should satisfy the following Equation 1.

Where ρ is the resistivity, R is the resistance, A is the area of the conductive paint layer,

w: width of conductive paint layer, l: length of conductive paint layer, t: thickness of conductive paint layer

The resistivity value is an experimental value for properly generating the conductive paint layer. When the thickness of the conductive paint layer is less than 0.2 mm in a state where the width and length of the conductive paint layer are constant, the coating material may be used to obtain a predetermined resistivity required for the conductive paint layer. The amount of carbon particles contained in the layer should be increased, but at this time, the amount of carbon particles in the conductive paint is 40 wt% or more, so that the viscosity of the conductive paint is increased, thereby making it impossible to obtain a homogeneous paint and increasing the brittleness of the paint layer. do.

And, if the thickness of the conductive paint layer exceeds 0.5mm, the amount of the paint is increased not only long drying time but also increase the frequency of occurrence of cracks during drying, economic efficiency is reduced.

Moreover, since the possibility that the heat generation temperature of the electrically conductive paint which is a heat generating body exceeds the appropriate heating temperature cannot be completely excluded, it is also preferable to provide a thermal prevention device in an ondol panel.

The two electrodes 13A and 13B to which power from the outside is applied are connected to a power line (not shown) passing through the waterproof insulation layer 16, the wood plate 11, and the insulation layer 12. The role of the current equalization band 14 not directly connected to the power source will be described with reference to FIG. 4, which schematically illustrates the flow of current.

The current applied to the one electrode 13A has a constant size (A) throughout the electrode and is transferred to the conductive paint, and the current delivered to the conductive paint differs in the fine dispersion concentration of the hexagonal plate-shaped carbon powder contained in the conductive paint. As a result of the size change, the current magnitude A 'for each width direction is not constant, and as a result, a difference occurs in the amount of heat generated for each panel location.

However, the current generated in the widthwise position while passing through the conductive paint has a uniform current in the width direction at the instant of contact with the metal current equalization band 14, which is a conductor, in the width direction. Again flows through the conductive paint. That is, the current equalization band 14 serves to minimize the temperature variation for each position of the entire panel by uniformly equalizing the current for each position in the width direction that inevitably changes in size while passing through the conductive paint.

The metal current equalization band is preferably copper or aluminum having excellent electrical conductivity and relatively inexpensive, and having a thickness of 0.1 to 0.5 mm and a width of 5 to 20 mm.

During the manufacturing step of the electric ondol panel using the present invention current equalization band and hexagonal plate-shaped carbon configured as described above, after the conductive paint is applied to one side of the wood plate on which the electrode and the current equalization band are installed, the neck is coated with the conductive paint. There is a step in which the vibration is applied to the trial, and it is very important to apply enough vibration to the wood board so that the hexagonal plate-shaped carbon particles contained in the conductive paint are laid down with respect to the wood board floor.

As described above, since the hexagonal plate-shaped carbon particles and the current equalization band are applied to the ondol panel of the present invention, the temperature variation of the entire ondol panel is minimized by uniform conductivity, thereby providing uniform heating.

In addition, since the panel of the panel is made of wood, the weight of the panel is reduced, so it is not only easy to transport and install, but also has excellent shock absorption. It is suitable as a floor heating material.

Claims (3)

As the electric ondol panel, a waterproof insulating layer 12 is coated on one surface of the wood plate 11, and electrodes 13A and 13B are provided at both ends of the upper surface of the waterproof insulating layer 12, and at least between the two electrodes. At least one metal current equalization band 14 is attached in parallel with both electrodes 13A and 13B, and at least on the upper end of the electrode and current equalization band on the upper surface of the insulating layer 12 to which the electrode and the current equalization band are attached. It is characterized in that the conductive paint layer 15 is filled with a uniformly dispersed carbon powder consisting of hexagonal plate-shaped carbon particles up to the height, and the waterproof insulating layer 16 wraps the entire surface of the panel formed up to the conductive paint layer. An electric ondol panel using a current equalization band and hexagonal carbon. According to claim 1, wherein the current equalization band is a copper or aluminum material, electric current heating band using a current equalizing band and hexagonal plate-shaped carbon, characterized in that the thickness is 0.1 to 0.5mm, the width is 5 to 20mm. The electric ondol panel according to claim 1, wherein the conductive paint layer is a composite of synthetic resin and carbon powder, and has a thickness of 0.2 to 0.5 mm.