WO2011010781A1 - Electrode structure for a tubular heating apparatus using a carbon heating element - Google Patents

Abstract

The present invention relates to an electrode structure for a tubular heating apparatus using a carbon heating element. More particularly, the carbon heating element is longitudinally installed in a heating tube body so that the carbon heating element installed in the heating tube body can easily emit heat under optimized conditions to significantly improve heating efficiency and to minimize energy consumption. Further, the tubular heating apparatus using the carbon heating element according to the present invention includes an electrode structure, both ends of which are electrically connected to external electric wires via lead wires, wherein the electrode structure is characterized in that it comprises: an electrode, including a groove at one edge portion and a penetration hole intersecting an axial direction such that an end of the carbon heating element is inserted into the penetration hole at a right angle when inserted into the groove, a screw groove formed in a center of an outer surface of the electrode being connected to the penetration hole; a plug, including a male screw part disposed at one side and coupled to the screw groove of the electrode to press the carbon heating element against an inner surface of the screw groove of the electrode, the lead wire being coupled to an axially oriented hole of the plug; and a conductive plate disposed between the male screw part and the carbon heating element.

Description

Electrode Structure of Tubular Heating Device Using Carbon Heating Element

The present invention relates to an electrode structure of a tubular heating device using a carbon heating element, and more particularly, by allowing the carbon heating element embedded in the heating tube to smoothly generate heat under optimum conditions, maximizing heating efficiency and minimizing energy consumption. It relates to an electrode structure of a tubular heating device using a carbon heating element capable of.

In general, the carbon heating element is a heat generating means using carbon (carbon), and it is very economical because the heat generation efficiency is excellent even at low power and the power consumption is low. Not only does it fail smoothly, but also has the drawback that the heat generation efficiency is lowered.

As a related art, a heater using a carbon heating element of Korean Utility Model Application No. 1403-2703 shown in Fig. 1, or an electrically conductive carbon fiber of Korean Utility Model Application No. 1405-24252 shown in Fig. 2 is shown. There is a heating element ', and the prior art is made of a structure in which the carbon heating element generates heat by applying power to the carbon heating element embedded in the outer tube, a detailed description will be omitted as already known.

That is, the conventional technologies are not only very weak at the connection portion between the carbon heating element and the power source, but also frequently cause electrical defects such as poor connection of the power source, sparks, short circuits, disconnection, and the like. There have been problems such as shortening the lifespan. The main cause of such defects is that carbon yarn is composed of yarn thinner than hair, so it is difficult to connect electrodes because of no rigidity such as nichrome or tungsten, and it is shorted or damaged by pressure when pressing carbon steel and metal for electrode. There has been a problem that sparks or shorts due to defects occur. In addition, even though the expansion rate between the carbon yarn and the metal of the electrode was different, the compression was good, but it was loosened by the thermal elongation due to heating, eventually causing local heat generation and short circuit due to contact failure. Due to these causes, there have been many difficulties in making the capacity of the carbon heating element into a high capacity, high heat generating device.

The present invention aims to solve the problems of the prior art by not only eliminating the problems of the prior art by connecting the carbon heating element inside the heating tube to the power supply firmly by both electrodes and plugs, and to significantly improve the electrical conductivity and the heating efficiency.

In addition, another object of the present invention is to have a carbon heating element coiled around the center tube coupled to the electrodes on both sides to have a more robust structure, as well as to further increase the heating area and heating efficiency.

Still another object of the present invention is to provide an electrically conductive conductive plate at the contact portion of the carbon heating element and the plug to minimize electrical resistance and to provide a smoother power supply.

In the electrode structure of the tubular heating device using a carbon heating element in which a carbon heating element is installed in the longitudinal direction of the heat generating tube of the present invention and both ends of the carbon heating element are electrically connected to an external electric wire through a lead wire, the carbon heating element An end of which is inserted into the groove of one corner portion and is inserted at right angles into the through hole crossing the axial direction, and a screw groove formed at the center of the outer surface is connected to the through hole; A male screw part of one side assembled to the screw groove of the electrode presses the carbon heating element to be in close contact with the inner surface of the screw groove, and the plug of which the lead wire is coupled to the hole in the axial direction; An electrode structure of a tubular heating device using a carbon heating element is characterized by comprising an electrically conductive conductive plate provided between the male screw portion and the carbon heating element.

In addition, the lead wire according to the present invention is characterized in that the lead wire through the plug is exposed to the front surface of the male screw portion, the bent portion of the end in contact with the conductive plate, the bending portion is formed in the middle portion.

In another aspect, the present invention is characterized in that the one side protruding portion of the electrode is coupled to both ends of the central tube installed in the heat generating tube body, and the carbon heating element is coiled around the outer side of the central tube body.

In another aspect, the present invention is characterized in that the electrode and the plug is formed by pressing the carbon powder at a high temperature.

In addition, the conductive plate of the present invention is characterized by consisting of a nickel alloy.

The electrode structure of the tubular heating device using the carbon heating element according to the present invention minimizes the electrical resistance and further improves the electrical conductivity, thereby prolonging the life of the product and contributing to improved product quality. Economic effects.

In addition, the present invention provides a smooth stability of the power supply of the carbon heating element to prevent electrical defects such as short circuits and sparks, as well as excellent stability.

1 is a partial internal cross-sectional view of a heater using a carbon heating element according to the prior art.

Figure 2 is an internal cross-sectional view showing the configuration of the conductive carbon fiber heating element according to the prior art.

Figure 3 is a perspective view showing partially cut away the configuration of the tubular heating device using a carbon heating element according to an embodiment of the present invention.

Figure 4 is an exploded perspective view showing the main part of the tubular heating device using the carbon heating element according to the present invention.

Figure 5 is an internal cross-sectional view showing the main part of the tubular heating device using a carbon heating element according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The preferred embodiments of the present invention described below are not intended to limit the technical scope of the present invention, but are intended to more clearly and easily describe the present invention to those having ordinary skill in the art. Like reference numerals in the drawings refer to like elements. In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

Figure 3 is a perspective view showing a partially cut in the configuration of the tubular heating device using a carbon heating element according to a preferred embodiment of the present invention, Figures 4 and 5 are the main part of the tubular heating device using a carbon heating element according to the present invention An exploded perspective view and an internal cross section shown.

In the electrode structure of the tubular heating device using the carbon heating element of the present invention according to the drawings, the carbon heating element 20 is installed in the longitudinal direction inside the heating tube 10, both ends of the carbon heating element 20 are lead wires In the electrode structure of the tubular heating device using the carbon heating element electrically connected to the external electric wire 56 through the 50, the end portion of the carbon heating element 20 is fitted into the groove 35 in one corner of the shaft. An electrode 30 inserted at right angles to the through hole 34 crossing the direction and having a screw groove 32 formed at the center of the outer surface thereof and connected to the through hole 34; The male screw portion 42 of one side assembled to the screw groove 32 of the electrode 30 presses the carbon heating element 20 to closely adhere to the inner surface of the screw groove 32, and the lead wire 50 is axial. A plug 40 coupled to the hole 44 in the direction; It is characterized by consisting of an electrically conductive conductive plate 46 provided between the male screw portion 42 and the carbon heating element (20).

The above is described in more detail.

First, the present invention is a carbon heating element 20 inherent in the heating tube 10, the electrode 30 is coupled to both ends of the carbon heating element, the plug 40 is coupled to the outside of the electrode, and the plug The lead wires 50 on both sides thereof, the heating tube 10 accommodating the above components, and the wires 56 connected to the lead wires and extended to the outside of the heating tube body.

The heating tube body 10 is preferably made of ordinary quartz or tempered glass and the like which are transparent and excellent in heat resistance, and end portions at both sides thereof are sealed by a pressure pipe part 12 which is press-molded at a high temperature.

The heating tube 10 is maintained in a vacuum state through a general vacuuming process forcibly discharging the air therein. Alternatively, the both ends of the heating tube 10 are sealed, and a predetermined air outlet passage is provided to make the interior non-vacuum state, which is a domestic patent application No. 10 proposed by the same person as the applicant of the present invention. It can be implemented by the 'tubular heating device using a carbon heating element' of -2008-0022307, and the detailed description thereof will be omitted since it may be unnecessarily obscure the subject matter of the present invention.

The carbon heating element 20 generates heat energy by electric energy supplied from the outside, is installed in the longitudinal direction in the inner center of the central tube 14, the electrode 30 is coupled to both ends.

Here, the carbon heating element 20 is preferably made of carbon braided yarn composed of two or more carbon fiber yarns and non-combustible yarns in a cylindrical or linear shape, wherein the carbon braided yarn is manufactured by braiding or weaving.

The electrode 30 is formed in a cylindrical shape so as to be inserted in sliding contact with the inside of the heating tube, the groove 35 formed on one side of the inner corner portion is extended in the longitudinal direction is connected to the through hole 34 intersecting the axial direction. . And a screw groove 32 is formed at a constant depth in the center of the outer surface and the screw groove 32 is connected to the inner end while the through hole 34 crosses at right angles.

That is, the carbon heating element 20 is inserted into the through hole 34 while both ends thereof are fitted into the recess 35, and are tightly fixed by the plug 40 assembled to the screw groove 32. In addition, the carbon heating element is inserted into the groove 35 so that the contact area with the electrode is widened as well as does not protrude to the outside of the electrode, so it is easy to assemble inside the heating tube.

The plug 40 has a stage on one side and a male thread portion 42 having a reduced diameter is assembled to the screw groove 32 while pressing the carbon heating element 20 inserted into the through hole 34 at a right angle to the screw groove. It is in close contact with the inner surface of the.

At this time, as the conductive plate 46 is inserted into the screw groove, power is smoothly supplied to the carbon heating element 20.

Here, the conductive plate 46 of the present invention is a conductive member having excellent electrical conductivity, and is preferably made of a metal whose electrical resistance is within 0.3 (Ω), which minimizes electrical resistance. Smooth the flow of current. In particular, the conductive plate 46 is most preferably composed of nickel (Ni) or nickel alloy. That is, the conductive plate 46 is composed of a nickel (Ni) alloy plate or a nickel plated plate having excellent heat resistance and durability at a high temperature of more than 1500 ℃. Alternatively, the conductive plate 46 may be made of a non-metal having an electrical resistance of 0.3 (Ω).

The plug 40 is formed with a hole 44 at the center in the axial direction, and the lead wire 50 is coupled to the outside of the hole 44.

The lead wire 50 according to the present invention penetrates the plug 40 and is exposed to the front surface of the male screw portion 42, and the bent portion 54 ′ of the end portion 54 contacts the conductive plate 46. The bending portion 52 is formed in the middle portion is characterized in that the configuration.

That is, the lead wire 50 penetrates the hole 44 and bends the end portion 54 exposed to the front surface of the male screw portion 42 at right angles, so that the side surface of the bent portion 54 'is the conductive plate 46. The contact area with the wider to make the current flow more smoothly.

In addition, the lead wire 50 has an outer end connected to an external electric wire 56 through the connection terminal 58, and the connection terminal 58 is preferably made of molybdenum (Mo) foil, and is damaged. It is fixed so as not to be shaken by the pressure pipe portion 12 formed on the outer end of the heating tube body 10 so as not to.

Here, the lead wire 50 has a buffering function of thermal deformation due to high temperature heat generation of the carbon heating element 20 as the bending portion 52 formed in the middle portion is elastically restored. The bending portion 52 is configured in the shape of 'V' or 'W', zigzag, coil or the like.

The wire 56 extends to a predetermined length and is connected to the wire terminal 57 at the end to more easily configure the power connection, the cap 60 through which the wire penetrates to the outer end of the pressure pipe portion 12 ) Is combined. The cap 60 is preferably made of an insulating member such as ceramic, and prevents leakage of electric wires and damage of electric wires.

On the other hand, the present invention, the one side projections 36 of the electrode 30 are respectively coupled to both ends of the central tube 14 installed in the heat generating tube 10, the carbon outside the central tube 14 The heating element 20 is characterized in that the coil is wound.

That is, a central tube 14 is provided at an inner center of the heating tube 10, and the electrodes 30 are coupled to both ends of the central tube 14, and a carbon heating element is formed outside the central tube 14. The coil 20 is wound in a coil form, and the length and heat generating area of the carbon heating element are expanded. In addition, the groove 35 is formed obliquely in the winding direction of the carbon heating element so that the carbon heating element is naturally connected to the through hole 34.

The central tube 14 is also preferably composed of the same quartz tube or tempered glass tube as the heating tube.

The electrode 30 has a protruding portion 36 having a diameter reduced on one side thereof and inserted into the central tube 14, and an uneven portion 37 is formed outside the protruding portion 36 so that the central tube body is formed. (14) is firmly combined. In addition, when the end of the center tube 14 is heated to a high temperature, the end of the central tube 14 is pressed into the protruding portion 36 and pressed from the outside, so that the fixing portion 16 engaged with the uneven portion 37 is firmly formed. It is fixed.

The electrode 30 has a hole 38 which is connected to the screw groove 32 in the center of the protrusion 36, the pressure inside the central tube 14 according to the temperature change through the hole 38 Adjusted.

The electrode 30 and the plug 40 are preferably a carbon powder made of carbon in a powder form into a predetermined mold according to a general molding method, and made of a carbon molding press-molded at a high temperature. It has excellent durability.

Alternatively, the electrode 30 and the plug 40 may be manufactured by processing a predetermined carbon rod (carbon rod) manufactured by the above method with a machine tool such as an NC lathe, milling, or the like. Or it is preferable that it consists of a metal member excellent in heat resistance and electrical conductivity.

In addition, although not shown in the drawing, the lead wire 50, more specifically, the bending part 52 may be attached to an electrostatic filter to prevent malfunction and damage due to static electricity.

In the tubular heating device using the carbon heating element of the present invention configured as described above, the lead wire 50 connecting the power from the outside of the heating tube 10 is the carbon heating element 20 by the electrode 30 and the plug 40. It is closely connected to and electrically, so that the durability is excellent, not only to extend the life of the product, but also to provide excellent safety. In particular, the carbon heating element 20 is smoothly supplied with power and reduces the waste of power. It is possible to maximize the heating efficiency while minimizing the electricity consumption.

For example, while a conventional carbon heating device generates heat within a range of 400 ° C. to 500 ° C. with a power of 2 kW, a tubular heating device using a carbon heating element of the present invention has a temperature of 700 ° C. to 800 ° C. or more with a power of 2 kW. High temperature heating is also possible. In other words, since the heat transfer area can be densified, high heat can be produced in a small container, thereby miniaturizing and reducing the weight of the heating device.

Claims (5)

1. The carbon heating element 20 is installed in the heating tube 10 in the longitudinal direction, and both ends of the carbon heating element 20 use the carbon heating element electrically connected to an external electric wire 56 through the lead wire 50. In the electrode structure of the tubular heating device,

   An end portion of the carbon heating element 20 is inserted at a right angle into a through hole 34 intersecting an axial direction while being fitted into a recess 35 in one corner portion thereof, and a screw groove 32 formed at a center of an outer surface thereof has the through hole 34. And an electrode 30 connected to the;

   The male screw portion 42 of one side assembled to the screw groove 32 of the electrode 30 presses the carbon heating element 20 to closely adhere to the inner surface of the screw groove 32, and the lead wire 50 is axial. A plug 40 coupled to the hole 44 in the direction;

   Electrode structure of the tubular heating device using a carbon heating element, characterized in that consisting of an electrically conductive conductive plate 46 provided between the male screw portion 42 and the carbon heating element (20).
2. The method of claim 1,

   The lead wire 50 penetrates the plug 40 and is exposed to the front surface of the male screw portion 42, and the bent portion 54 ′ of the end portion 54 is in contact with the conductive plate 46. Electrode structure of the tubular heating device using the carbon heating element, characterized in that the configuration is formed 52.
3. The method of claim 1,

   One protruding portion 36 of the electrode 30 is coupled to both ends of the central tube 14 installed inside the heating tube 10, and the carbon heating element 20 is disposed outside the central tube 14. An electrode structure of a tubular heating device using a carbon heating element, characterized in that the coil is wound.
4. The method according to any one of claims 1 to 3,

   The electrode 30 and the plug 40 is an electrode structure of a tubular heating device using a carbon heating element, characterized in that the carbon powder is press-molded at high temperature.
5. The method of claim 1,

   The conductive plate 46 is an electrode structure of a tubular heating device using a carbon heating element, characterized in that consisting of nickel (Ni) alloy.

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