KR20230017035A - Induction electric heating device including a heating rod - Google Patents

Abstract

The present invention relates to an induction electric heating device comprising a heating rod. According to one aspect of the present invention, the induction electric heating device comprises: a pair of support parts installed vertically on a floor surface; a fusion part installed to be spaced apart from the support part in an inward direction of the support part, and forming an internal space; and a heating rod comprising a container inserted into the internal space of the fusion part, in close contact with an inner side surface of the fusion part, and installing a heating rod protruding upward therein to fuse an ore for fusing therein. Therefore, the present invention is capable of reducing maintenance and management costs.

Description

Induction electric heating device including a heating rod}

The present invention relates to an induction heating device including a heating rod, and more particularly, to an induction heating device for separating metal from ore using an induction heating principle.

In general, induction electric heating furnaces, which have been used for alloying purposes in the metal industry, are gradually increasing due to the expansion of application fields. Applications of induction heating furnaces include metal component extraction, alloying and welding between metals etc.

The induction electric heating method is used in various applications such as metal surface heat treatment, high frequency induction electric welding, heat processing, and induction electric heating furnace in industrial fields. In particular, in the field of induction electric heating furnace, it is convenient to melt a small amount of metal quickly and maintain an appropriate temperature, and it is possible to melt with floating melting or stirring action, so industrial applications in many fields are gradually increasing.

In addition, the induction heating furnace heats by using induction electricity compared to conventional heating furnaces, so surface oxidation of the melt is small, automatic operation is possible, start and end of operation are simple, and the temperature of the melt It is easy to control, and it is gradually expanding in the industrial field. In addition, since the temperature in the crucible can be kept constant throughout, it is widely used in metal alloys and plating. Therefore, induction electric heating furnaces are widely used in various industrial fields, such as alloying between metals, welding, and metal extraction.

The field of application of such an induction electric heating furnace is the field of extracting metal components from ore. The induction electric heating furnace has the advantage of stably melting ore at high speed using induction electricity, and is widely used in the dry process of the smelting process to extract metal components.

In order to extend the life of the crucible used as a component constituting the furnace in the field using induction electric heating furnace, there is a method of preventing oxidation of the entire crucible by vacuuming the entire furnace body, but the cost increase is a disadvantage. , Also, considering the material side, the crucible made of silicon carbide rather than graphite has an advantage in repeated heating, but there is a problem that it is difficult to heat the melt in the crucible above a certain temperature.

Common induction heating furnaces are intended for melting. However, in the melting process, the central part of the crucible or furnace is melted the latest, and the overall melting time is long, making efficient operation difficult. There are problems such as difficulty in action, difficulty in dissolution, and reduction in the life of the crucible.

Based on the technical background as described above, the present invention attaches a heating rod in an induction electric heating furnace, increases the efficiency of the heating furnace by providing a heating rod made of the same material as the heat conducting part, and extends the life of the crucible. It is an object of the present invention to provide an induction electric heating device including a heating rod in which replacement of a crucible is easy and cost is reduced.

In order to achieve the above object, the present invention provides a pair of supports installed vertically on the bottom surface, spaced apart from the support in the inward direction of the support, and a melting unit in which an internal space is formed and an internal space of the melting unit. It is inserted, and is in close contact with the inner surface of the melting unit, and a heating rod protruding upward is installed therein to melt the melt inserted therein.

In addition, the melting unit is installed inside a housing into which the container is inserted with a space formed therein, a space is formed therein, and a coil part forming induction electricity and installed inside the coil part, It may include a heating rod including a heat conduction part that is in close contact with the coil part and generates heat according to the induction electricity of the coil part.

In addition, the housing includes a body member having a space formed therein, a cover installed on top of the body member to seal the upper portion of the body member, and a sealing member extending to the outside of the cover to seal the upper surface of the body member. can include

In addition, the heat conduction part may be formed in a semi-arc shape with an outer surface protruding and the other surface inserted inward, and a pair may be combined to form a ring shape.

In addition, the heat conducting part is installed on the upper part of the container so that the melting part can be separated from the container when moving upward along the support part, seals the container when moving downward, and a heat conducting layer made of graphite on a surface in contact with the container is formed, and a coil unit may be installed on an outer surface of the heat conductive layer to transfer heat to the heat conductive layer in close contact with the heat conductive layer.

In addition, the heating rod and the heat conducting part may be formed of any one of graphite, ceramic, and silicon carbide.

In addition, the heating rod may be installed on an inner surface of the container and made of the same material as the heat conducting part.

In addition, the heating rod may include an extension member having a plurality of protrusions extending in the longitudinal direction of the container and partially contacting an outer surface of the heating rod having a ring-shaped cross section.

An induction electric heating device including a heating rod according to an embodiment of the present invention rapidly heats the melt in a container to improve melting efficiency, extends the life of the container and housing, and facilitates maintenance of the melting unit, thereby reducing maintenance and management costs. this can be saved.

1 is a schematic diagram of an induction electric heating device including a heating rod according to an embodiment of the present invention.
2 and 3 are front views of a melting unit according to an embodiment of the present invention.
4 is a cross-sectional view of a melting unit according to an embodiment of the present invention.
5 is a perspective view of a heat conduction unit according to an embodiment of the present invention.
6 is a view showing a heating rod according to an embodiment of the present invention.

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

Advantages and features of the present invention, and methods for achieving them, will become clear with reference to the embodiments described below in detail in conjunction with the accompanying drawings.

However, the present invention is not limited by the embodiments disclosed below, but will be implemented in a variety of different forms, and only these embodiments make the disclosure of the present invention complete, and common knowledge in the art to which the present invention pertains. It is provided to completely inform the person who has the scope of the invention, and the present invention is only defined by the scope of the claims.

In addition, in the description of the present invention, if it is determined that related known technologies may obscure the gist of the present invention, a detailed description thereof will be omitted.

1 is a schematic diagram of an induction electric heating device including a heating rod according to an embodiment of the present invention.

1, the induction heating device 10 including a heating rod according to an embodiment of the present invention is capable of melting and cooling the ore so that the metal in the ore can be easily separated by the difference in specific gravity of the ore. It may include a melting unit 100, a cooling device 200 and a control unit 300.

The melting unit 100 may melt and separate the ore when induction electricity is introduced into the ore. In addition, the melting unit 100 may use the principle of induction heating to heat the inside of the melting unit 100 through electromagnetic induction by introducing a current into the inside. At this time, after the inside of the melting unit 100 is heated, in order to cool it, a cooling device 200 may be installed outside the melting unit 100 and spaced apart from the melting unit 100 .

The cooling device 200 may cool the inside of the melting unit 100 by circulating cooling water to the inside of the coil member 131 installed inside the melting unit 100 . At this time, the control unit 300 may be installed to cool the inside of the heating and melting unit 100 to a predetermined temperature of the melting unit 100 .

The control unit 300 is spaced apart from the melting unit 100 and is connected to the melting unit 100 to control the temperature to a predetermined temperature by operating the cooling device 200 to control the coil member ( 131) to allow cooling water to flow, and when the temperature is lowered, the temperature can be raised by controlling the current.

2 and 3 are front views of a melting unit according to an embodiment of the present invention.

2 and 3, the melting unit 100 according to an embodiment of the present invention melts and cools the ore inside, and the cooled and separated ore is easily discharged to the outside through the melting unit 100. It can be done, and it may include a support part 500 spaced apart from the melting part 100 on the side of the melting part 100 so that the separation and management of the device inside the melting part 100 can be facilitated.

The support part 500 is connected to the melting part 100 so that the melting part 100 moves upward and downward, so that the container 700 can be sealed or discharged to the outside, the support member 510, the slide groove 530 ) and a connecting member 550.

The support member 510 may be formed in a square or circular cross section. In addition, the support member 510 may be installed in a direction perpendicular to the bottom surface. For example, the support member 510 may extend upward from the bottom surface. Also, the support members 510 may be formed as a pair. A melting unit 100 may be installed between the pair of support members 510 . At this time, slide grooves 530 may be formed on surfaces of the pair of support members 510 facing each other.

The slide groove 530 may be formed along the longitudinal direction of the support member 510 . In addition, the slide groove 530 may be formed on a surface facing the melting unit 100 .

In addition, the slide groove 530 may be connected to the melting unit 100 so that the melting unit 100 may move upward and downward of the slide groove 530 . In addition, the slide groove 530 may guide the distance moving upward and downward of the melting unit 100 . At this time, in the slide groove 530, the connecting member 550 may protrude toward the melting portion 100.

The connecting member 550 may protrude from the outer surface of the melting unit 100 . In addition, the connecting member 550 may be installed below the melting unit 100 . In addition, the connecting member 550 may be moved upward and downward along the slide groove 530 . In addition, an end of the connecting member 550 may be connected to the outer surface of the melting unit 100 .

Through this, when the connecting member 550 moves upward and downward along the slide groove 530, the melting portion 100 connected to the end of the connecting member 550 can move upward and downward, so that the melting portion ( 100) may be in close contact with or separated from the container 700 installed inside.

Figure 4 is a cross-sectional view of a melting unit according to an embodiment of the present invention, Figure 5 is a perspective view of a heat conduction unit according to an embodiment of the present invention, Figure 6 is a view showing a heating rod according to an embodiment of the present invention.

4 to 6, the melting unit 100 according to an embodiment of the present invention is inserted into the container 700 so that the ore can be melted by heating the ore drawn into the inside, the container The outer surface of the 700 may include a housing 110, a coil unit 130, and a heat conduction unit 150 so as to be heated through induction electricity.

The housing 110 may include a cover 111, a sealing member 113, and a body member 115 so that the container 700 can be inserted below and the top sealed. The cover 111 may be located above the body member 115. In addition, the cover 111 can be combined or separated, so that the body member 115 can be sealed and opened.

In addition, when the cover 111 is opened, the internal temperature of the body member 115 can be lowered, and when the container 700 is heated, the inside of the body member 115 can be sealed by combining the cover 111. At this time, a sealing member 113 may be formed to seal the upper surface of the cover 111 coupled to the upper side of the body member 115 and the body member 115 .

The sealing member 113 may be formed in a ring-shaped cross section. In addition, the sealing member 113 is formed of a material such as concrete to completely seal the outer surface of the cover 111 and the upper surface of the body member 115. Through this, it is possible to prevent heat generated by heating the inside of the body member 115 from escaping to the outside of the body member 115 .

The body member 115 may be formed in a circular or rectangular cross section. In addition, the inside of the body member 115 may be packed with a material having excellent heat insulation performance, such as concrete, to prevent heat generated inside from being discharged to the outside.

In addition, the body member 115 may have a hole formed therein, so that when the melting unit 100 moves downward along the support unit 500, the body member 115 is fixed to the lower side, and the container 700 with ore contained therein is formed in the body member 115. It can be inserted under the member 115. At this time, the outer surface of the container 700 may be in close contact with the coil unit 130 and the heat conduction unit 150 which may be installed along the outer surface of the hole formed in the center of the body member 115 .

The coil unit 130 may have a ring-shaped cross section. In addition, the coil unit 130 may be connected to the control unit 300 that supplies induced power. In addition, the coil unit 130 may be installed on an outer surface of the container 700 to be spaced apart from the container 700 . That is, it may be embedded inside the body member 115.

When the container 700 inserted inside the body member 115 is inserted into the inside of the body member 115, the coil unit 130 generates induction electricity to the container 700 to heat the container 700. A coil member 131 may be formed inside the 700 to melt the ore inside.

The coil member 131 may be formed in a coil shape extending from the bottom to the top. In addition, the coil member 131 may heat the container 700 and the heat conduction unit 150 by generating induction electricity when current is transmitted through the control unit 300 .

In addition, the coil member 131 can stir the melt, which can be ore, in the container 700 by acting on alternating operation in the container 700 by induction electricity, so that the melt, which can be metal and non-metal, is dissolved. The same components can be separated from each other, the melt with relatively low specific gravity is moved to the upper layer of the crucible, and the metal components with high specific gravity sink to the lower layer of the crucible and can be separated in the form of ingots.

In addition, a hollow part may be formed inside the coil member 131, so that after the container 700 is heated and melted and metal and non-metal are separated therein, cooling water or the like is injected into the hollow part and circulated, thereby circulating the container. (700) The melt inside can be solidified again.

At this time, the heat transfer efficiency is improved by the induction electricity of the coil member 131, the heating efficiency of the container 700 is improved, and the heating rod 730 installed inside the container 700 can be easily heated, The heat conduction unit 150 may be in close contact with the inner surface of the coil unit 130 so that it can be easily attached and detached to facilitate maintenance.

The heat conduction unit 150 may have a ring-shaped cross section. In addition, the heat conduction unit 150 may be formed of a material such as graphite, ceramic, or silicon carbide.

Also, the heat conduction unit 150 may adhere to the inner surface of the coil unit 130 . In addition, the heat conduction unit 150 may be installed to correspond to holes having various sizes of the coil unit 130 installed inside the body member 115, and may be installed to increase heat conductivity, the first heat conduction layer 151 and A second heat conduction layer 153 may be included.

The first heat-conducting layer 151 may have a ring-shaped cross section. In addition, the first heat conduction layer 151 may have a ring-shaped cross section by combining two conduction members 151a and 151b formed in a semi-arc shape, thereby forming a flow hole 151a therein. The conductive members 151a and 151b may be formed in shapes corresponding to each other.

For example, a first protruding member 151d may be formed on the right side of the conductive member 151a located on the left side. In addition, the left surface of the conductive member 151b located on the right side may be formed in a shape retracted inward, and the second protruding member 151e protruding to the left may be protruded, so that the inside of the conductive member 151a It can be inserted into the retracted part.

Through this, the protruded and retracted shapes are repeatedly formed along the outer surface from the top to the bottom along the longitudinal direction, so that the mutually coupled conductive members 151a and 151b can be fitted into each other.

Through this, the first heat-conducting layer 151 can be easily attached to and detached from the inner surface of the coil unit 130, and the replacement of the first heat-conducting layer 151 is easy, so that the maintenance of the heat-conducting part 150 is easy. This can be done, and the management cost of the melting unit 100 can be reduced.

At this time, the first heat-conducting layer 151 may be formed with a diameter corresponding to a hole formed on the inner surface of the coil unit 130, and the second heat-conducting layer 153 is formed inside the first heat-conducting layer 151. It is formed with a diameter corresponding to the hole formed on the inner surface of the first heat conductive layer 151 and can be closely coupled to the inner surface of the first heat conductive layer 151 .

That is, the second heat-conducting layer 153 may be formed in a shape and material corresponding to that of the first heat-conducting layer 151, and the straight line of the second heat-conducting layer 153 has a smaller diameter than that of the first heat-conducting layer 151. can be formed

Through this, when the container 700 is inserted into the inside, it is possible to manufacture the heat conducting part 150 corresponding to the containers 700 of different sizes on site, corresponding to the size of the container 700 and easy to replace. And, since the heat conduction part 150 suitable for the required thickness according to the heat conduction efficiency can be provided, the installation cost and time of the melting part 100 installed for each size of the container 700 can be reduced.

At this time, the container 700 is inserted into the hole formed inside the heat conduction unit 150 and adhered to the inner surface of the heat conduction unit 150, and the inside of the adhered container 700 may be made of the same material as the heat conduction unit 150. Since the heating rod 730 is installed inside the container 700, melting of the melted material such as ore inserted into the container 700 may be facilitated.

For example, the heating rod 730 may be formed of the same graphite material when the heat conducting portion 150 is made of graphite, and when the heating rod 730 is made of ceramic, the heat conducting portion 150 is made of ceramic If the heat conducting part 150 is made of silicon carbide, the heating rod 730 can be made of silicon carbide, so it can be equally heated by an induced current to heat the inside of the container 700. .

The container 700 may include a container body 710 with an open top and a groove formed therein, and a heating rod 730 installed inside the container body 710 .

The container body 710 may be formed in a circular cross section. In addition, since the upper surface of the container body 710 may be formed with a groove, a melt such as ore may be inserted therein. At this time, inside the container body 710, the heating rod 730 installed from the bottom to the top of the groove formed in the container body 710 is formed of the same material as the heat conducting part 150, so it is heated by induction electricity. The melting efficiency of the melt can be improved.

Referring to FIG. 6 , a plurality of heating rods 730 may be installed inside the container body 710 . In addition, the heating rod 730 may be formed of the same material as the heat conducting part 150 . Through this, when the heat conduction unit 150 is heated through the coil unit 130, the heating rod 730 can be heated at the same time, thereby improving the dissolution efficiency of the melt that may be ore introduced into the container body 710. can make it

In addition, a plurality of heating rods 730 may be installed inside the container body 710 . In addition, the heating rod 730 may be manufactured and installed in various shapes. For example, the heating rod 730 may be formed in a cylindrical shape. In addition, the heating rod 730 may be formed in a columnar shape with a rectangular cross section, a triangular cross section, and a hexagonal cross section.

In addition, the heating rod 730 may have a triangular protruding part with an outer surface extending outward in a circular cross section. Through this, the melting efficiency can be improved by improving the contact area between the melt and the heating bar 730 .

In addition, the heating rod 730 may be formed in a ring-shaped cross section. In addition, the heating rod 730 may be formed in a shape extending in a longitudinal direction that may be above the container body 710 . That is, it may be formed in a cylindrical shape.

In addition, an extension member E protruding outward may be coupled to an outer surface of the heating body B, which may have a ring-shaped cross section of the heating rod 730. A space may be formed inside the extension member E. In addition, the edge formed at the inner end of the extension member (E) may be in contact with the outer surface of the ring-shaped cross section of the heating body (B). That is, when the ring-shaped cross section is heated, the heated heat is transferred to the extension member E, thereby improving the contact area with the melt.

At this time, a plurality of holes may be formed on the outer surface of the heating rod 730 formed in a ring-shaped cross section, and a plurality of holes may be formed on the outer surface of the extension member E, so that when the melt becomes a fluid, Melts of the fluid can flow inside and outside the heating rod 730, so that the contact area and contact time between the melt and the heating rod 730 can be improved, thereby improving heat transfer efficiency. In addition, since the extension member E is made of the same material as the heat conducting part 150 and the heating rod 730, it can be heated in the same way by induction electricity.

As described above, a plurality of heating rods 730 may be formed of the same material as the heat conducting part 150 inside the container 700, so that the heat conducting part 150 is heated and the heating rod 730 is heated at the same time. It is possible to improve the dissolution rate and dissolution efficiency of the lysate, and as the housing 110 is connected to the support 500, the sliding movement to the upper part of the container 700 is possible, thereby separating the container 700 and the housing 110. It is easy to attach and detach, the thickness of the heat conducting part 150 inside the housing 110 is easy to adjust as a plurality of layers, and the heat conducting part 150 is easy to replace, so maintenance can be simple, and the alternation of induction electricity is possible. By separating the material according to the specific gravity of the melt through magnetic flux to produce an ingot-type material, the melting efficiency of the melt is improved, the melting cost is reduced, and maintenance can be simplified.

The present invention has been described above with reference to the embodiment (s) shown in the drawings, but this is only exemplary, and various modifications can be made thereto by those skilled in the art, and the above-described embodiments It will be appreciated that all or part of (s) may be configured in selective combinations. Therefore, the true technical protection scope of the present invention should be defined by the technical spirit of the appended claims.

10: induction electric heating device including heating rod
100: melting part 110: housing
111: cover 113: sealing member
115: body member 130: coil part
131: coil member 200: cooling device
300: control unit 500: support unit
510: support member 530: slide groove
550: connecting member 700: vessel
710: container body 730: heating rod
B: heating body E: extension member

Claims (8)

A pair of supports installed vertically on the floor;
A fusion part spaced apart from the support part in an inward direction of the support part and having an internal space formed therein; and
Induction electric heating including a heating rod that is inserted into the inner space of the melting unit, is in close contact with the inner surface of the melting unit, and includes a container for melting the melt inserted therein by installing a heating rod protruding upward therein Device.
According to claim 1,
The melting part,
a housing having a space formed therein and into which the container is inserted;
a coil unit installed inside the housing, having a space formed therein, and forming induction electricity; and
An induction electric heating device comprising a heating rod installed inside the coil unit and including a heat conduction unit that is in close contact with the coil unit and generates heat according to the induction electricity of the coil unit.
According to claim 2,
the housing,
A body member having a space formed therein;
a cover installed on the upper portion of the body member to seal the upper portion of the body member; and
Induction heating device including a sealing member extending to the outside of the cover to seal the upper surface of the body member
According to claim 2,
The heat conduction part,
An induction heating device comprising a pair of heating rods formed in a semi-arc shape with an outer surface protruding and the other side inserted inward and forming a ring shape by combining a pair.
According to claim 4,
The heat conduction part,
It is installed on the upper part of the container so that the melting part can be separated from the container when moving upward along the support, seals the container when moving downward, and a heat conducting layer made of graphite is formed on a surface in contact with the container, and the heat conduction An induction electric heating device comprising a heating rod having a coil unit installed on an outer surface of the layer to be in close contact with the heat conductive layer to transfer heat to the heat conductive layer.
According to claim 2,
The heating rod and the heat conducting unit include a heating rod formed of any one of graphite, ceramic, and silicon carbide.
According to claim 6,
The heating rod,
An induction heating device comprising a heating rod installed on an inner surface of the container and formed of the same material as the heat conducting part.
According to claim 1,
The heating rod includes an extension member extending in the longitudinal direction of the container and having a plurality of protrusions formed with a plurality of protrusions that are partially in contact with an outer surface of the heating rod having a ring-shaped cross section.

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