KR101214630B1 - Boiler using high frequency induction heating - Google Patents

Abstract

PURPOSE: A boiler with high-frequency induction heating is provided to cool induction coils through a heat exchange with fluid as the induction coils are coated with heat-resisting insulation and waterproof silicon. CONSTITUTION: A boiler with high-frequency induction heating comprises a boiler tank and a heating unit(H). The heating unit is inserted into the boiler tank to heat fluid in the boiler tank. The heating unit comprises an induction coil(10) and an object(20) to be heated. The induction coil comprises a spiral coil body(11) and an electrode terminal(12). The spiral coil body is placed inside the boiler tank. The electrode terminal is connected to the coil body, and exposed to the outside of the boiler tank. High-frequency current flows into the coil body. The object is closely placed to the coil body, and heated by the lost heat of eddy current or hysteresis loss heat.

Description

Boiler using high frequency induction heating {BOILER USING HIGH FREQUENCY INDUCTION HEATING}

The present invention relates to a boiler using high frequency induction heating, and more particularly, winding a metal round rod to maintain the wound form of the induction coil, and coating the induction coil with heat resistant insulation and waterproof silicone, Induction coils can also be exposed to a fluid, which is a heat transfer medium, so that the induction coil can be cooled through continuous transfer with the fluid, and at the same time, heat generated from the induction coil can be used for heating the fluid, thereby improving energy efficiency. It relates to a boiler using heating.

When high frequency induction heating approaches an induction coil through which a high frequency current flows, the eddy current is generated by being placed in an alternating magnetic field in which the heated object alternates. Hysteresis loss occurs to generate heat in the heated object, also called IH (Induction Heating).

High frequency induction heating was initially used for metal processing that mainly melts or heats metals, but recently, due to the convenience of short temperature rise time and easy control of heating temperature, production of products using induction heating method is increasingly used in nonmetal processing fields. The trend is increasing.

Patent No. 10-0827468 (Registration Date: 2008.04.28) has proposed a high frequency induction heating electric boiler.

However, in the high frequency induction heating apparatus according to the prior art as described above, induction coils are usually used by winding copper wires or nichi wires, which has a disadvantage in that bobbins are required for maintaining the wound form of the induction coils, and water is heated like a boiler. In this case, the induction coil is placed in an enclosed space so that it does not come into contact with water, and only the surface of the heating element is in contact with water. There is a problem in that the induction coil is damaged by heating the induction coil to a high temperature in a closed space.

In addition, the high-frequency induction heating apparatus according to the prior art has a disadvantage in that the inductance is small because the induction coil is formed of one winding layer, and the cylindrical shaped heating element located inside and outside the induction coil is formed of a metal plate to contact air or There was a disadvantage in that the heat exchange efficiency is reduced due to the small area that the liquid (water) can contact.

The present invention has been made to solve the problems of the prior art as described above, the object of the present invention is to maintain the wound form of the induction coil without the need for bobbins, the induction coil as well as the heating body is a heat transfer medium The present invention provides a boiler using high frequency induction heating that can be exposed to a fluid and improve the heat exchange efficiency by increasing the area in which the fluid is in contact with the heating object.

In order to achieve the above object, a boiler using high frequency induction heating according to the present invention includes a boiler tank containing a fluid for heating therein and inserted into the boiler tank to heat the fluid contained in the boiler tank to generate heat. In the boiler comprising a heat generating means, the heat generating means, the inside of the boiler tank has a spiral Kojakche body is disposed and connected to the kojakche body is provided with an electrode terminal exposed to the outside of the boiler tank to the Kojakche body And an induction coil through which a high frequency current flows, and a heated body close to the nose body and heated by an eddy current loss heat or a hysteresis loss heat, wherein the induction coil has a round bar made of a metal material to maintain a wound shape. Wound to shape, coated with heat-resistant insulation and waterproof silicone The.

In addition, the boiler using the high frequency induction heating according to the present invention, the induction coil, the induction coil, the first winding layer wound around the spiral rod of a metallic material, and the spaced apart from the first winding layer The second winding layer is formed concentrically with the first winding layer and is wound in a spiral shape.

In addition, the boiler using the high frequency induction heating according to the present invention, the first winding layer and the second winding layer is interposed in the longitudinal direction long in the space between the first winding layer and the second winding layer so as to be spaced apart from each other. Spaced support rods of ceramic material, wherein the plurality of spaced apart support rods are characterized in that the radially symmetrical arrangement with respect to the concentric axis of the first winding layer and the second winding layer.

In addition, the boiler using the high frequency induction heating according to the present invention, the heating body is composed of an inner heating body disposed inside the induction coil, and an outer heating body disposed outside the induction coil, The heating means is characterized in that it further comprises a support frame in which the inner heating body, the induction coil and the outer heating body are supported apart from each other.

In addition, the boiler using a high frequency induction heating according to the present invention, the heating body, the mesh mesh of the metal material is formed entirely of through-holes through which the surrounding fluid and the induced electromagnetic waves generated in the induction coil can pass through the roll type It is wound and characterized in that formed in a cylindrical shape.

In the boiler using the high frequency induction heating according to the present invention by the configuration as described above, the winding shape of the induction coil is maintained as it is by winding a metal round bar, as well as the heating body by coating the induction coil with heat-resistant insulation and waterproof silicone The induction coil can also be exposed to a fluid, which is a heat transfer medium, so that the induction coil can be cooled through continuous transfer with the fluid, and the heat generated from the induction coil can be used for heating the fluid. By winding in the winding layer, the inductance of the induction coil can be increased, and the metal to be heated is formed in a cylindrical shape by a metal mesh or spring to increase the contact surface area where the fluid is in contact with the object to be heated, thereby improving heat exchange efficiency. Furthermore, both the inside and the outside of the induction coil are open so that the induction coil It is possible to arrange the heating target on the inside and the outside, respectively, there is an advantage to maximize the energy efficiency.

1 is a structural diagram of a boiler using high frequency induction heating according to an embodiment of the present invention
Figure 2 is a side cross-sectional view of the heating means according to an embodiment of the present invention
3 is a plan view of the heating means according to an embodiment of the present invention
4 is a perspective view of a heating means according to an embodiment of the present invention;
5 is a perspective view of an induction coil according to an embodiment of the present invention;
6 is a perspective view of a support frame according to an embodiment of the present invention;
Figure 7 is a perspective view showing a state in which the induction coil is coupled to the support frame according to an embodiment of the present invention
8 is a perspective view of a heating object according to a first embodiment of the present invention;
9 is a perspective view of a heating object according to a second embodiment of the present invention;
10 is a perspective view of a heating object according to a third embodiment of the present invention;

Hereinafter, a boiler using high frequency induction heating according to the present invention will be described in detail with reference to the embodiment shown in the drawings.

1 is a structural diagram of a boiler using high frequency induction heating according to an embodiment of the present invention, Figure 2 is a side cross-sectional view of the heating means according to an embodiment of the present invention, Figure 3 according to an embodiment of the present invention 4 is a plan view of the heating means, Figure 4 is a perspective view of the heating means according to an embodiment of the present invention, Figure 5 is a perspective view of the induction coil according to an embodiment of the present invention, Figure 6 is an embodiment of the present invention 7 is a perspective view illustrating a state in which an induction coil is coupled to a support frame according to an embodiment of the present invention, and FIGS. 8 to 10 are first to third embodiments of the present invention. It is a perspective view of a to-be-heated body according to an example.

Looking at the drawings, a boiler using high frequency induction heating according to an embodiment of the present invention is configured to include a boiler tank (T), and a heat generating means (H).

The boiler tank (T) is an example of the steam boiler in one embodiment of the present invention, as shown in Figure 1 is accommodated for the fluid for heating therein, by the cover (T1) detachably provided at the top The interior has a sealed structure.

On the other hand, the boiler tank (T) has a structure in which the power is controlled according to the pressure measured by the pressure sensor, the pump is controlled according to the water level measured by the water level measurement sensor, the specific configuration of the boiler tank (T) Since it is obvious to those skilled in the boiler art, the following detailed description will be omitted.

The heat generating means (H) is inserted into the inside of the boiler tank (T) to heat the fluid contained in the boiler tank (T) to generate heat by using high frequency induction heating in one embodiment of the present invention. The coil 10, the to-be-heated body 20, and the support frame 30 are comprised.

That is, in one embodiment of the present invention, when the heating means (H) approaches the induction coil (10) through which a high frequency current flows, the heating body (20), the heating body (20) alternates. The eddy current is generated by being located in an alternating magnetic field, which causes eddy current loss or hysteresis loss to generate heat in the heated object 20. It is used.

The induction coil 10 has a spiral nose body 11 is disposed inside the boiler tank T, and is connected to the nose body 11 to be exposed to the outside of the boiler tank (T) electrode terminal ( 12) is provided so that a high frequency current flows into the nose body (11).

In addition, the induction coil 10 is configured by winding a round bar 13 made of a metal spiral so that the wound shape is maintained.

That is, the induction coil in the high frequency induction heating apparatus according to the prior art is usually composed of a copper wire or Nichiwai, so that the bobbin for winding the induction coil is necessarily required to maintain the wound form of the induction coil, one embodiment of the present invention In the example, the induction coil 10 is formed by winding the round rod 13 made of metal in a spiral shape so that the wound form is maintained as it is so that no additional configuration such as a bobbin for maintaining the shape is required.

As such, when there is no bobbin for supporting the induction coil 10, the outer to-be-heated body 20b disposed outside the induction coil 10, as well as the inside of the induction coil 10 is disposed. The induction electromagnetic waves generated by the induction coil 10 also directly extend to the inner body to be heated 20a so that both inside and outside of the induction coil 10 can be used intact, thereby maximizing energy efficiency.

In addition, the induction coil 10 is coated with heat resistant insulating and waterproof silicone 14.

That is, the induction coil in the high frequency induction heating apparatus according to the prior art is placed in a closed space so that the induction coil is not in contact with the water and insulated from the water when the water is heated like a boiler. Since the structure is in contact with water, energy efficiency is low, and there is a problem in that the induction coil is damaged by heating the induction coil to a high temperature in a closed space for insulation with water, but in one embodiment of the present invention, Since the induction coil 10 is coated with heat resistant insulation and waterproof silicone 14, it is possible to expose not only the heating body 20 but also the induction coil 10 to a fluid that is a heat transfer medium. The induction coil 10 can be cooled and the heat generated from the induction coil 10 can be used for heating the fluid. Only it can be prevented from being damaged by heat, but the energy efficiency will be also able to be improved.

On the other hand, when the heat-resistant ceramic is adopted as the coating material of the induction coil 10, there is a problem that cracks are generated by shrinkage expansion by heat of the induction coil 10. In one embodiment of the present invention, the induction coil 10 The heat-resistant insulation and waterproof silicone 14 may be adopted as the coating material of), and the heat-resistant insulation and waterproof silicone 14 may use, for example, Duraseal ™ High Temperature Sealant Binders manufactured by CONTRONICST.

In addition, the induction coil 10 is, in one embodiment of the present invention, the first winding layer 10a in which the round bar 13 of the metal material is wound in a spiral shape, and the spaced apart support bar 31 of the support frame 30. And a second winding layer 10b wound in a spiral shape while forming a concentric circle with the first winding layer 10a in a supported state spaced apart from the first winding layer 10a. It may be configured to have more winding layers.

That is, the high frequency induction heating apparatus according to the prior art has a disadvantage in that the inductance is small because the induction coil is formed of one winding layer, but in one embodiment of the present invention, the induction coil 10 has a plurality of winding layers ( 10a, 10b) to increase the inductance of the induction coil 10.

The to-be-heated body 20 is configured to be heated by the eddy current loss heat or the hysteresis loss heat in close proximity to the nose unit 10. In one embodiment of the present invention, the inner blood body is disposed inside the induction coil 10. And a sieve 20a and an outer heated body 20b disposed outside the induction coil.

That is, the heated body 20 is configured to exert a remarkable working effect by the organic coupling relationship with the induction coil 10 according to an embodiment of the present invention in the embodiment of the present invention the induction coil 10 is formed by coating heat-resistant insulation and waterproof silicone 14 on the round bar 13 made of a metal material, so that both the inside and the outside of the induction coil 10 are opened. It is possible to arrange the inner side heating body 20a and the outer side heating body 20b, respectively, and the induced electromagnetic waves generated from the induction coil 10 are the inner side heating body 20a and the outer side. By directly extending to the heating body 20b, it is possible to maximize energy efficiency.

8 to 10 show perspective views of the heating body 20 according to the first to third embodiments of the present invention.

Referring to FIG. 8, the heated body 20 according to the first embodiment of the present invention has a metal mesh having a through hole through which a surrounding fluid and guided electromagnetic waves generated by the induction coil 10 can pass. The net 21 is wound in a roll shape and is formed in a cylindrical shape, as shown in FIG. 8 to increase the heat exchange efficiency by increasing the contact surface area of the surrounding fluid in contact with the heated body 20. The mesh net 21 is bent in a zigzag form to be wrinkled and rolled in a roll type in a state in which a predetermined thickness t is formed between the outer surface portion and the inner surface portion.

Referring to Figure 9, the heated body 20 according to the second embodiment of the present invention is arranged in a cylindrical shape with a spring 22 of a metal material forming a predetermined diameter (d), the spring 22 ) The steel wires are wound in a spiral shape, and the steel wires are bent in the upper or lower direction to form a predetermined diameter and are arranged in an annular shape along the circumferential direction with respect to the central axis, and stacked in the vertical direction to be connected to each other. It is preferable to comprise so that it may become.

That is, the spring 22 is formed so that one steel wire is connected as described above, and the cylindrical shape is continuously formed, thereby overheating the superheated portion through the interconnected continuous shape even when a point that is partially overheated occurs due to the characteristics of the high frequency induction heating. By dispersing it, it becomes possible to generate heat uniformly throughout.

Referring to FIG. 10, the to-be-heated body 20 according to the third embodiment of the present invention may have a cylindrical first to-be-heated body made of the mesh network 21 shown in FIG. 8, and the first to-be-heated body. On the outer circumference of the sieve is formed a combination of a cylindrical second heating body consisting of the spring 22 shown in FIG.

That is, the first to-be-heated body made of the mesh net 21, which is easier to maintain a cylindrical shape than the spring 22 structure, serves as a support, and the heat dissipation property of the first to-be-heated body is the mesh net ( The second heating body made of the spring 22, which is superior to 21, is wound so that the heated object 20 according to the third embodiment of the present invention is the blood of the first embodiment and the second embodiment. By having the advantages of the heating body 20 evenly, it is excellent in heat dissipation.

The support frame 30 is a spaced apart support rod 31 and the central support rod 32 in a configuration in which the inner heating body 20a, the induction coil 10 and the outer heating body 20b are mutually supported. It is configured to include.

The spaced support rod 31 is made of a ceramic material and is long in the longitudinal direction in a space between the first winding layer 10a and the second winding layer 10b, and a plurality of the first winding layer 10a is provided. It is arranged radially symmetrical with respect to the concentric axis of the second winding layer (10b), that is, the central support rod 32 so that the first winding layer (10a) and the second winding layer (10b) are spaced apart from each other. Configuration.

On the other hand, the spaced support rod 31 is configured such that the first winding layer (10a) and the second winding layer (10b) is spaced apart from each other, as shown in the drawing, the inner heating body (20a) and A second spaced apart support rod 31 ′ in which the first winding layer 10a is spaced apart from each other, and a third spaced apart support rod in which the second winding layer 10a and the outer heated member 20b are spaced apart from each other. 31 '') is preferred.

The central support rod 32 extends in the upper direction from the center of the support frame 30 to be fastened to the cover (T1) so that the heating means (H) can be easily inserted and fixed to the boiler tank (T). It is configured to be.

The boiler using high frequency induction heating described above and shown in the drawings is only one embodiment for implementing the present invention, and should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is defined only by the matters set forth in the claims below, and the embodiments which have been improved and changed without departing from the gist of the present invention will be apparent to those skilled in the art. It will be said to belong to the protection scope of the present invention.

T boiler tank
H heating means
10 Induction Coil
10a first winding layer
10b winding layer 2
11 ko
12 electrode terminal
13 round bar
14 heat-resistant insulation and waterproof silicone
20 heating element
20a inner body
20b outer heating element
21 mesh network
22 springs
30 support frame
31 Spaced Support Rods
32 center support rod

Claims (5)

In the boiler comprising a boiler tank containing a fluid for heating therein, and a heating means inserted into the boiler tank to heat the fluid contained in the boiler tank to generate heat;
The heating means may include an induction coil in which a spiral koja body is disposed inside the boiler tank and is connected to the koja body so that an electrode terminal is exposed to the outside of the boiler tank and a high frequency current flows through the koja body; It is composed of a heating element in close proximity to the nose body and heated by eddy current loss heat or hysteresis loss heat,
The induction coil, the round bar of a metallic material is wound in a spiral shape so that the wound shape is maintained, coated with heat-resistant insulation and waterproof silicone,
The to-be-heated body includes an inner to-be-heated body disposed inside the induction coil and an outer to-be-heated body disposed outside the induction coil,
The heating means is a boiler using high frequency induction heating, characterized in that further comprises a support frame for supporting the inner heating body, the induction coil and the outer heating body spaced apart from each other. The method of claim 1,
The induction coil may include a first winding layer in which a round bar made of a metal material is wound in a spiral shape, and a second winding layer wound in a spiral shape while forming a concentric circle with the first winding layer while being spaced apart from the first winding layer. Boiler using high frequency induction heating comprising a. The method of claim 2,
The first winding layer and the second winding layer includes a spaced apart support rod made of a ceramic material long interposed in the longitudinal direction in the space between the first winding layer and the second winding layer so as to be spaced apart from each other, the plurality of spaced apart support rods A boiler using high frequency induction heating, characterized in that the radially symmetrical arrangement based on the concentric axis of the first winding layer and the second winding layer. delete 4. The method according to any one of claims 1 to 3,
The heated object is a high-frequency induction heating, characterized in that the mesh mesh of the metal material is formed in a cylindrical shape is formed in the roll-type of the metal mesh is formed entirely of the through-hole through which the surrounding fluid and the induced electromagnetic waves generated in the induction coil can pass Used boiler.

Images