WO2017171103A1

WO2017171103A1 - Heat exchanger using magnetic material

Info

Publication number: WO2017171103A1
Application number: PCT/KR2016/003113
Authority: WO
Inventors: 이희복; 이재우
Original assignee: (주)아크웨이브솔루션스코리아
Priority date: 2016-03-28
Filing date: 2016-03-28
Publication date: 2017-10-05
Also published as: KR20190089233A; KR20170129720A

Abstract

A heat exchanger using magnetic material according to an embodiment of the present invention may include: a rotor having a ring shape and including a plurality of magnetic materials; a rotation shaft disposed along a central axis of the rotor in a direction perpendicular to a circumferential direction and connected to the rotor; an inner pipe disposed along an inner surface of the rotor and having an inlet and an outlet; and at least one outer pipe disposed along an outer surface of the rotor and having an inlet and outlet. The plurality of magnetic materials are disposed on the rotor along the circumferential direction, each of the magnetic materials is disposed on the outer surface of the rotor so that one side of each of the magnetic materials is exposed, and may be disposed on the inner surface of the rotor so that the other surface of each of the magnetic materials is exposed.

Description

Heat exchanger using magnetic material

The present invention relates to a heat exchanger, and more particularly, to a heat exchanger using a magnetic material.

Recently, there have been many studies on the development of alternative energy due to various factors such as depletion of existing fossil fuels and environmental problems caused by the use of fossil fuels. Among others, there have been many efforts to develop a heat exchange device using joule heat generated by eddy currents.

An eddy current or foucault current is a current flowing in a spiral shape inside a conductor by electromotive force generated inside the conductor. As a method of generating the eddy current, there is a method of changing the magnetic flux. When the magnetic flux is to be changed to generate an eddy current, when the polarities of the magnets (that is, the N pole and the S pole) are rotated alternately, the magnetic flux that bridges the conductor around the magnetic body changes with time. At this time, Joule heat is generated in a direction crossing the magnetic flux. In this case, the heat exchange device may be configured by arranging a pipe through which fluid flows around the rotating magnet.

The technical idea of the present invention provides a heat exchange apparatus using a magnetic material that can efficiently use Joule heat generated by the eddy current.

Heat exchange apparatus using a magnetic material according to an embodiment of the present invention includes a rotor having a ring shape and a plurality of magnetic materials. The plurality of magnetic bodies may be disposed along the circumferential direction, and each of the magnetic bodies may be disposed so that one surface of the respective magnetic body is exposed on the outer surface of the rotor and the other surface of the magnetic body is exposed on the inner surface of the rotor. have. A heat exchange apparatus using a magnetic material includes a rotating shaft connected to the rotor along a central axis of the rotor in a direction perpendicular to the circumferential direction, an inner pipe disposed along the inner surface of the rotor and having an inlet and an outlet, and the ash At least one outer pipe disposed along the outer surface of the former and having an inlet and an outlet.

According to an embodiment of the present invention, it is possible to provide a heat exchange apparatus using a magnetic material that can efficiently use Joule heat generated by the eddy current.

1 is a view showing a heat exchanger using a magnetic material according to an embodiment of the present invention.

2 is a view showing in detail the structure of the rotor shown in FIG.

3 is a view showing in detail the structure of the rotor core shown in FIG.

4 is a view showing in detail the portion A shown in FIG.

FIG. 5 is a detailed view showing portion A of FIG. 3.

6 is a view showing the assembly of the rotor according to an embodiment of the present invention.

7 is a view showing a heat exchanger using a magnetic material according to an embodiment of the present invention.

FIG. 8 is a view illustrating an inner pipe of a heat exchange apparatus using the magnetic material illustrated in FIG. 7.

FIG. 9 is a view showing the inner pipe shown in FIG. 8 being flattened. FIG.

FIG. 10 is a view illustrating another example of the inner pipe illustrated in FIG. 7.

11 is a view showing a heat exchanger using a magnetic material according to an embodiment of the present invention.

12 is a view showing in detail the shape of the outer pipe shown in FIG.

13 and 14 are views illustrating a structure of a flow path formed inside the outer pipes and the connection part.

15 is a view showing a heat exchanger using a magnetic material according to an embodiment of the present invention.

16 is a view showing in detail the structure of the rotor shown in FIG.

17 is a view showing in detail the structure of the rotor core shown in FIG.

FIG. 18 is a detailed view of portion A shown in FIG. 17.

19 is a view showing in detail the first fixing plate shown in FIG.

20 is a view showing the assembly of the rotor according to an embodiment of the present invention.

21 is a view showing the power lock shown in FIG.

22 is a view showing a heat exchanger using a magnetic material according to an embodiment of the present invention.

23 is a view showing a heat exchanger using a magnetic material according to another embodiment of the present invention.

24 is a view showing a heat exchanger using a magnetic material according to another embodiment of the present invention.

25 is a view showing a heat exchanger using a magnetic material according to another embodiment of the present invention.

26 is a view showing an embodiment of a heat exchanger using a magnetic material according to an embodiment of the present invention.

FIG. 27 is a view illustrating a structure of the connecting unit illustrated in FIG. 26.

28 is a view showing in detail the structure of the first connecting plate shown in FIG.

FIG. 29 is a view illustrating in detail the structure of the second connecting plate illustrated in FIG. 27.

30 is a view showing a fluid flow in the pipe of the heat exchange apparatus using a magnetic material according to an embodiment of the present invention.

31 is a view showing the structure of a flow path formed inside the pipes and the connecting portion.

32 is a view showing a heat exchanger using a magnetic material according to another embodiment of the present invention.

FIG. 33 is a view illustrating in detail the structure of the connection unit illustrated in FIG. 32.

FIG. 34 is a sectional view of a portion A-B shown in FIG. 33.

FIG. 35 is a view illustrating a fluid flow in a pipe of the heat exchange apparatus using the magnetic body illustrated in FIG. 32.

36 is a view showing a heat exchanger using a magnetic material according to another embodiment of the present invention.

37 is a view showing a heat exchanger using a magnetic material according to another embodiment of the present invention.

38 to 40 are views illustrating a heat exchange apparatus using a magnetic material according to another embodiment of the present invention.

11 is a view showing the best mode for practicing the present invention.

It is to be understood that both the foregoing general description and the following detailed description are exemplary, and that additional explanations of the claimed invention are provided. Reference numerals are shown in detail in preferred embodiments of the invention, examples of which are shown in the reference figures. In any case, like reference numerals are used in the description and the drawings to refer to the same or like parts.

When an element or layer is referred to as being "connected", "coupled", or "adjacent" to another element or layer, it is directly connected to or coupled to another element or layer. It may mean to be adjacent to, or adjacent to, or may mean to be indirectly connected to, coupled to, or adjacent to each other with another element or layer therebetween. The term "and / or" as used herein will include one or more possible combinations of the listed elements.

Although terms such as "first", "second", and the like may be used herein to describe various elements, these elements are not limited by these terms. These terms may only be used to distinguish one component from the other. Accordingly, terms such as the first component, section, and layer used herein may be used as the second component, section, layer, etc. without departing from the spirit of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art may easily implement the technical idea of the present invention.

1 is a view showing a heat exchanger using a magnetic material according to an embodiment of the present invention. Referring to FIG. 1, a heat exchange apparatus 1000 using a magnetic material includes rotors 1100-1 to 1100-3, a rotor connection part 1200, a rotation shaft 1300, and a rotor fixing part 1400. can do.

The rotors 1100-1 to 1100-3 may include a magnetic material (eg, a permanent magnet) for generating an eddy current. The rotors 1100-1 to 1100-3 may be connected by the rotor connector 1200. In the drawing, for example, the rotor connector 1200 is shown as a long rod-shaped penetrating the rotors 1100-1 to 1100-3, but the rotor connector 1200 includes the rotors 1100-1 to 1. 1100-3) may be in various shapes or means capable of connecting to each other. In addition, the rotors 1100-1 to 1100-3 connected by the rotor connecting unit 1200 may be connected to the rotation shaft 1300 by the rotor fixing unit 1400. Similarly, the rotor 1100-3 is illustrated as being fixed to the rotating shaft 1300 by the long rod-shaped rotor fixing unit 1400, but the rotor fixing unit 1400 includes the rotors 1100-1 to 1. 1100-3) may be various means or devices capable of fixing at least one of the rotating shafts 1300.

When the rotors 1100-1 to 1100-3 fixed to the rotating shaft 1300 rotate about the rotating shaft 1300, an eddy current is generated on the conductor surface. By Joule heat generated by the generated eddy current, water flowing through a pipe (not shown) provided around the rotors 1100-1 to 1100-3 may be heated. Detailed structures of the rotors 1100-1 to 1100-3 will be described below in more detail with reference to FIG. 2. Although three rotors 1100-1 to 1100-3 are illustrated in the drawings, the number of rotors is not limited thereto.

2 is a view showing in detail the structure of the rotor 1100-1 shown in FIG. Referring to FIG. 2, the rotor 1100-1 may include a rotor core 1120, magnetic bodies 1140, and a fixing plate 1160. Grooves may be formed on the outer edge of the rotor core 1120 so that the plurality of magnetic bodies 1140 may be fastened. The number of grooves may be formed by the number of magnetic bodies 1140. As shown in the figure, when the magnetic bodies 1140 are fastened to the rotor core 1120, the magnetic bodies 1140 may be exposed on the inner and outer surfaces of the rotor 1100-1. Grooves may be formed.

3 is a view showing in detail the structure of the rotor core 1120 shown in FIG. The rotor core 1120 may have a shape in which a plurality of grooves to which magnetic bodies (see FIG. 2 and 1140) are fastened to a circular plate is formed. The rotor core 1120 may be in the form of a ring as shown in the figure. Holes 1121 for fastening with the fixing plate 1160 may be formed in the rotor core 1120, and holes 1122 for connection with the rotor cores of the other rotors 1100-2 and 1100-3 may be formed. ) May be formed. For example, the holes 1121 may not penetrate the rotor core 1120, and the holes 1122 may penetrate the rotor core 1120. The material of the rotor core 1120 may be aluminum (Al). However, the present invention is not limited thereto and may be processed into various metals.

4 is a view showing in detail the portion A shown in FIG. For example, since 14 grooves for coupling with the magnetic bodies 1140 are illustrated in the rotor core 1120, the number of the magnetic bodies 1140 is also illustrated as 14. For example, the number of the magnetic bodies 1140 may be even. 4, the magnetic body 1140-1 is disposed such that the N pole faces the outer surface of the rotor core 1120, and the magnetic body 1140-2 has the S pole facing the outer surface of the rotor core 1120. Deployed. Although not shown in the drawing, the N pole of another magnetic body (not shown) disposed adjacent to the magnetic body 1140-2 will be disposed to face the outer surface of the rotor core 1120. That is, the north pole and the south pole may be alternately arranged on the outer surface of the rotor 1100-1.

The magnetic bodies 1140 may be permanent magnets. For example, the magnetic bodies 1140 may be magnetic bodies made of samarium cobalt. Samarium cobalt is an intermetallic compound (SmCo5) of samarium (Sm) and cobalt (Co), and is a ferromagnetic material having a coercive force much larger than ferrite. Samarium cobalt magnetic material has a maximum operating temperature of about 350 ° C., and is a magnetic material having little demagnetizing due to its high temperature stability. Alternatively, the magnetic body 2140 may be a neodium magnet, a ferrite magnet, or an AlNiCo magnet. However, when the rotor 1100-1 rotates, it is necessary to prevent the magnetic bodies 1140 from leaving the rotor core 1120. An example for this case is illustrated in FIG. 5.

FIG. 5 is a detailed view showing portion A of FIG. 3. Grooves formed in the rotor core 1120 for fastening with the magnetic bodies 1140 may be partially protruded as shown in the drawing. In addition, the shapes of the magnetic bodies 1140 may also be protruded to fit into the grooves formed in the rotor core 1120. However, this form is exemplary and various apparatus or means may be used to prevent the magnetic bodies 1140 from leaving the rotor core 1120.

6 is a view showing the assembly of the rotor according to an embodiment of the present invention. The rotor shown in this figure may be any one of the rotors 1100-1 to 1100-3 of FIG. 1. The magnetic bodies 1140 are fastened to a plurality of grooves formed in the rotor core 1120. In addition, in order to prevent the magnetic bodies 1140 from being separated, a bolt may be fastened after the fixing plate 1160 is attached to one surface of the rotor core 1120. However, in the drawings, for convenience of description, each of the magnetic bodies 1140 is illustrated as being a hexahedron, but the magnetic bodies 1140 are prevented from being separated from the rotor core 1120 when the rotor core 1120 is rotated. For this purpose, the rotor core 1120 and the magnetic bodies 1140 may have a shape as shown in FIG. 5.

7 is a view showing a heat exchanger using a magnetic material according to an embodiment of the present invention. The heat exchanger illustrated in FIG. 7 is basically the same as the heat exchanger illustrated in FIG. 1, and an inner pipe 1500 is further provided on an inner surface of the rotors 1100-1 to 1100-3. FIG. 8 is a view illustrating an inner pipe 1500 of the heat exchanger 1000 using the magnetic material illustrated in FIG. 7. FIG. 9 is a view showing the inner pipe 1500 shown in FIG. 8 being flattened.

7 to 9, the inlet pipe and the outlet port of the inner pipe 1500 may face the same direction. By way of example, the inner pipe 1500 is shown having curved portions to extend along the longitudinal direction (ie, Z direction) and then extend in the opposite direction (ie, -Z direction). However, the shape of the inner pipe 1500 is not limited thereto. For example, the inner pipe 1500 may have a screw form (or, similarly, a spring form) about the Z axis.

Cold fluid (eg, water) may be introduced through the inlet of the inner pipe 1500, and hot fluid (eg, water) may be discharged through the outlet of the inner pipe 1500. Of course, in order for hot fluid to be discharged from the outlet, the rotors 1100-1 to 1100-3 will have to rotate to generate Joule heat for heating the fluid. The inner pipe 1500 is around the inner surface of the rotors 1100-1 to 1100-3 so as not to contact the rotors 1100-1 to 1100-3, the rotational axis 1300, and the rotor fixing part 1400. May be appropriately arranged.

The inner pipe 1500 may be made of various metals having high thermal conductivity such as aluminum (Al), copper (Cu), and the like. In addition, a ceramic coating layer for improving heat transfer efficiency and a silicon coating layer for improving heat resistance may be formed on a surface of the inner pipe 1500. For example, a ceramic coating layer may be formed first, and then a silicon coating layer may be formed on the ceramic coating layer.

7 to 8, one inner pipe 1500 is illustrated in a zigzag form along the inner surface of the rotors 1100-1 to 1100-3. However, according to the embodiment, two or more inner pipes may be provided. In this case, this example is shown in FIG.

FIG. 10 is a diagram illustrating another example of the inner pipe 1500 shown in FIG. 7. For the sake of understanding, the first inner pipe 1500-1 and the second inner pipe 1500-2 are shown in a flat plane in a flat state, but the first inner pipe 1500-1 and the second inner pipe 150-0 are shown. 2) may take the form of a round ring when viewed in the Z-axis direction as shown in FIG. 8. The first inner pipe 1500-1 and the second inner pipe 1500-2 may be disposed along the inner surfaces of the rotors 1100-1 to 1100-3 shown in FIG. 7. Although the drawing shows that the outlet of the first inner pipe 1500-1 through which hot fluid is discharged and the inlet of the second inner pipe 1500-2 through which cold fluid is introduced are adjacent to each other, the first inner pipe 1500 The outlet of -1) and the outlet of the second inner pipe 1500-2 may be adjacent to each other.

11 is a view showing a heat exchanger using a magnetic material according to an embodiment of the present invention. The heat exchanger illustrated in FIG. 11 is basically the same as the heat exchanger illustrated in FIG. 7, and a plurality of outer pipes 1600-1 to 1600-n are further provided around the heat exchanger. The plurality of outer pipes 1600-1 to 1600-n may be appropriately disposed around the rotors 1100-1 to 1100-3 so as not to contact the rotors 1100-1 to 1100-3.

When power (eg, electric motor, wind energy, etc.) is supplied through the rotating shaft 1300 and the rotors 1100-1 to 1100-3 rotate, the surfaces of the rotors 1100-1 to 1100-3 are rotated. Eddy currents may occur. When Joule heat is generated due to the generated eddy current, the fluid (eg, water) flowing inside the inner pipe 1500 and the plurality of outer pipes 1600-1 to 1600-n may be heated. For example, the plurality of outer pipes 1600-1 to 1600-n may be formed of various metals such as aluminum (Al), copper (Cu), and the like. In addition, a ceramic coating layer for improving heat transfer efficiency and a silicon coating layer for improving heat resistance may be formed on the surfaces of the pipes. For example, a ceramic coating layer may be formed first, and then a silicon coating layer may be formed on the ceramic coating layer.

12 is a view showing in detail the shape of the outer pipe shown in FIG. Grooves for increasing the surface area may be formed on the surface of each of the outer pipes 1600-1 to 1600-3. By way of example, the surface of the outer pipe is shown in the form of a screw. However, the shape of the surface of the outer pipe is not limited to this, and may be in various forms to increase the surface area such as a screw or a drill. Of course, not only the surface of the outer pipes 1600-1 to 1600-3, but also the inner pipe 1500 may be in the form of a screw that can increase its surface area.

13 and 14 are views illustrating a structure of a flow path formed inside the outer pipes and the connection part. For ease of understanding, the outer pipes 1600-1-1600-n shown in FIG. 11 are shown to unfold in a flat plane. The first outer pipe 1600-1 to the nth outer pipe 1160-n may be connected by the connecting portions 1610 to form one flow path. By such a connection, the fluid introduced through the inlet of the first outer pipe 1600-1 will be discharged through the outlet of the nth outer pipe 1160-n. However, the outer pipes 1600-1 to 1600-n may be connected to have two or more flow paths. This embodiment is illustrated in FIG. 14.

Referring to FIG. 14, the first outer pipe 1600-1 to kth outer pipe 1160-k may be connected by the connecting portions 1610 to form one flow path. The k + 1th external pipes 1160-(k + 1) to the nth external pipes 1160-n may be connected by the connecting parts 1610 to form one flow path. That is, although the external pipes 1600-1 to 1600-n form two flow paths according to the connection by the connection parts 1610, the number of flow paths is not limited thereto. For example, without the connections 1610, the outer pipes 1600-1 to 1600-n may have inlets and outlets, respectively.

15 is a view showing a heat exchanger using a magnetic material according to an embodiment of the present invention. Referring to FIG. 15, the heat exchanger 2000 using the magnetic material may include rotors 2100-1 to 2100-3, power locks 2200-1 to 2200-3, and a rotating shaft 2300.

The rotors 2100-1 to 2100-3 may include a magnetic material (eg, a permanent magnet) for generating an eddy current. When the rotors 2100-1 to 2100-3 fixed to the rotation shaft 2300 rotate about the rotation shaft 2300, an eddy current is generated on the conductor surface. By the Joule heat generated by the generated eddy current, water flowing through a pipe (not shown) provided around the rotors 2100-1 to 2100-3 can be heated. Detailed structures of the rotors 2100-1 to 2100-3 will be described below with reference to FIG. 16. Although three rotors 2100-1 to 2100-3 are illustrated in the drawings, the number of rotors is not limited thereto.

The rotation shaft 3300 may be coupled to the rotors 2100-1 to 2100-3 by the power locks 2200-1 to 2200-3. The number of power locks 2200-1 to 2200-3 may be provided by the number of rotors 2100-1 to 2100-3. For example, the rotation shaft 2300 may be made of iron (Fe).

FIG. 16 is a view illustrating in detail the structure of the rotor 2100-1 shown in FIG. 15. Referring to FIG. 16, the rotor 2100-1 may include a rotor core 2120, a magnetic body 2140, a first fixing plate 2160-1, and a second fixing plate (not shown).

Grooves may be formed on the outer edge of the rotor core 2120 so that the plurality of magnetic bodies 2140 may be fastened. The number of grooves may be formed by the number of magnetic materials 2140. In addition, the thickness of the rotor core 2120 may be smaller than the thickness of the magnetic bodies 2140. As a result, as shown in the figure, some space may be formed between the magnetic bodies (2140). These spaces serve to prevent the magnetic bodies 2140 from overheating due to the eddy current generated when the rotor 2100-1 rotates at a high speed.

17 is a view showing in detail the structure of the rotor core 2120 shown in FIG. The rotor core 2120 may have a shape in which a plurality of grooves to which magnetic bodies (see FIG. 16 and 2140) are fastened to a circular plate is formed. For example, the plurality of grooves may be trapezoidal. By forming the grooves in the shape of a trapezoid, it is possible to prevent magnetic bodies from escaping when the rotor rotates at high speed. In addition, a hole may be formed in the center of the rotor core 2120 as shown in the drawing so that the rotation shaft (see FIG. 15, 2300) may be inserted. For example, the material of the rotor core 2120 may be aluminum (Al). However, the present invention is not limited thereto and may be processed into various metals.

FIG. 18 is a detailed view of portion A shown in FIG. 17. Referring to FIG. 18, the groove 2122 into which the magnetic material 2140 may be fastened may be trapezoidal. As a result, when the rotors (refer to FIG. 15, 2100-1 to 2100-3) rotate at high speed, the magnetic body 2140 can be prevented from escaping. As shown in the figure,

auxiliary grooves

2124 and 2126 may be further formed on both sides of the groove 2122. The

auxiliary grooves

2124 and 2126 serve to prevent the magnetic bodies 2140 from overheating due to the eddy current generated when the rotor (see FIG. 15, 2100-1 to 2100-3) rotates at high speed. In the drawing, two circular

auxiliary grooves

2124 and 2126 are further formed at both ends of the groove 2122. However, the shape, position, and number of grooves are not limited thereto.

The magnetic body 2140 may be inserted so that the N pole faces the outer direction of the rotor and the S pole faces the direction of the center axis of the rotor. In addition, adjacent magnetic bodies may be inserted such that the N pole is directed toward the center axis of the rotor, and the S pole is directed toward the outside direction of the rotor. That is, the north pole and the south pole may be alternately arranged on the surface of the rotor. However, the present invention is not limited thereto, and the magnetic bodies 2140 may be inserted such that only the N pole or the S pole is disposed on the surface of the rotor. As shown in the figure, one magnetic body 2140 may be inserted into one groove 2122.

The magnetic body 2140 may be a permanent magnet. For example, the magnetic material 2140 may be a magnetic material made of samarium cobalt. Samarium cobalt is an intermetallic compound (SmCo5) of samarium (Sm) and cobalt (Co), and is a ferromagnetic material having a coercive force much higher than that of ferrite. Samarium cobalt magnetic material has a maximum operating temperature of about 350 ° C., and is a magnetic material having little demagnetizing due to its high temperature stability. Alternatively, the magnetic body 2140 may be a neodium magnet, a ferrite magnet, or an AlNiCo magnet.

FIG. 19 is a detailed view of the first fixing plate 2160-1 shown in FIG. 16. The first fixing plate 2160-1 serves to bind the magnetic body 2140 inserted into the rotor core (see FIG. 2, 2120). As shown in the figure, the thickness of the edge of the first fixing plate 2160-1 may be thinner than the thickness of other portions. By thinly processing the edge thickness of the first fixing plate 2160-1, a space may be formed between the magnetic bodies 2140, as described in FIG. 16.

The first holes 2162 and the second holes 2164 may be formed on the first fixing plate 2160-1. The rotor core 2120 and the first fixing plate 2160-1 may be fastened by bolts (not shown) provided through the first holes 2162. The second holes 2164 may be formed to reduce vibrations generated when the rotors rotate at high speed. In this case, the second hole 2164 may be provided only at the outermost part of the heat exchanger (see FIG. 15, 2000) using the magnetic material. That is, it may be formed only on the fixed plates of the outermost side of the rotors 2100-1 and 2100-3.

20 is a view showing the assembly of the rotor according to an embodiment of the present invention. The magnetic bodies 2140 are inserted into a plurality of grooves formed at the edge of the rotor core 2120. In addition, after the first fixing plate 2160-1 and the second fixing plate 2160-2 are attached to both sides of the rotor core 2120 to prevent the magnetic bodies 2140 from being separated, the bolts may be fastened. Can be.

21 is a view showing the power lock shown in FIG. The power lock 2200-1 serves to bind the rotors (see FIG. 15, 2100-1 to 2100-3) and the rotation shaft 2300. A groove may be formed in a portion where the rotor and the rotating shaft contact each other, thereby binding the rotor and the rotating shaft. However, in this case, since the center of gravity may not be uniformly distributed about the rotation axis, it may be preferable to bind using the power lock.

22 is a view showing a heat exchanger using a magnetic material according to an embodiment of the present invention. The heat exchanger shown in FIG. 22 is basically the same as the heat exchanger shown in FIG. 15, and a plurality of pipes 2400-1 to 2400-n are provided around the heat exchanger. The plurality of pipes 2400-1 to 2400-n may be in contact with adjacent pipes. In addition, the plurality of pipes 2400-1 to 2400-n may be appropriately disposed around the rotors 2100-1 to 2100-3 so as not to contact the rotors 2100-1 to 2100-3. .

When power (eg, electric motor, wind energy, etc.) is supplied through the rotating shaft 2300 and the rotors 2100-1 to 2100-3 rotate, the surfaces of the rotors 2100-1 to 2100-3 are rotated. Eddy current occurs in the When Joule heat is generated due to the generated eddy current, the fluid (eg, water) flowing inside the plurality of pipes 2400-1 to 2400-n may be heated. For example, the plurality of pipes 2400-1 to 2400-n may be formed of various metals such as aluminum (Al), copper (Cu), and the like. In addition, a ceramic coating layer for improving heat transfer efficiency and a silicon coating layer for improving heat resistance may be formed on the surfaces of the pipes. For example, a ceramic coating layer may be formed first, and then a silicon coating layer may be formed on the ceramic coating layer.

23 is a view showing a heat exchanger using a magnetic material according to another embodiment of the present invention. The heat exchanger illustrated in this figure is basically the same as the heat exchanger illustrated in FIG. 22 except that the shapes of the plurality of pipes 2400-1 to 2400-n provided around the heat exchanger are different.

As shown in the figure, the cross sections of the plurality of pipes 2400-1 to 2400-n may be trapezoidal. Both the outer section of the pipe and the inner section through which the fluid flows can be trapezoidal. As shown in FIG. 23, the plurality of pipes 2400-1 to 2400-n may be disposed such that the upper side and the lower side of the trapezoid cross each other. By arranging the top and bottom sides of the trapezoid to intersect, the gap between the rotor and the pipe can be minimized. As a result, the magnetoresistance is reduced, so that the loss of Joule heat generated by the eddy current can be minimized.

The plurality of pipes 2400-1 to 2400-n may be made of a metal such as aluminum or copper, and a ceramic coating layer and a silicon coating layer may be formed on the surface thereof.

24 is a view showing a heat exchanger using a magnetic material according to another embodiment of the present invention. The heat exchanger illustrated in this figure is basically the same as the heat exchanger illustrated in FIG. 22 except that the shapes of the plurality of pipes 3400-1 to 3400-n provided around the heat exchanger are different.

As shown in the figure, the outer cross section of the pipe may be rectangular, and the inner cross section through which the fluid flows may be circular. The surface of this pipe has a relatively wider surface than the circular pipe shown in FIG. Therefore, the large surface area is advantageous over circular pipes in terms of thermal efficiency. The pipe of this shape is made of a relatively large amount of metal as compared to the pipes of other shapes because the inner cross section through which the fluid flows is circular. Thus, the ability to accumulate Joule heat generated by eddy currents is relatively excellent.

25 is a view showing a heat exchanger using a magnetic material according to another embodiment of the present invention. The heat exchanger illustrated in this figure is basically the same as the heat exchanger illustrated in FIG. 22 except that the shapes of the plurality of pipes 2400-1 to 2400-n provided around the heat exchanger are different.

As shown in the figure, both the outer cross section of the pipe and the inner cross section through which the fluid flows may be rectangular. The surface of this pipe has a relatively wider surface than the circular pipe shown in FIG. Therefore, the large surface area is advantageous over circular pipes in terms of thermal efficiency. In addition, since the inner cross section is also rectangular, it is made of a relatively small amount of metal as compared to the pipe shown in FIG. Thus, such shaped pipes are advantageous for instantaneous heat transfer.

26 is a view showing an embodiment of a heat exchanger using a magnetic material according to an embodiment of the present invention. The heat exchanger 2000 using the magnetic material illustrated in the drawing further includes

connection parts

2500 and 2600 in the heat exchanger illustrated in FIG. 22.

The connecting

parts

2500 and 2600 allow the plurality of pipes 2400-1 to 2400-n to be connected in a zigzag form. Fluid (for example, water) is introduced through an inlet of the pipe 2400-1 connected to the connection part 2600, and the inflowed fluid is zigzag in a plurality of pipes 2400-2 to 2400-n. Flow. Then, the fluid is discharged through the outlet of the pipe (2400-n) connected to the connecting portion (500). The fluid passing through the plurality of pipes 2400-1 to 2400-n is heated by Joule heat generated by the eddy current. Detailed structures of the connection unit 2500 and the connection unit 2600 will be described below with reference to FIG. 27.

FIG. 27 is a diagram illustrating a structure of the connection part 2500 illustrated in FIG. 26. The structures of the connection part 2500 and the connection part 2600 are substantially the same, and the connection part 2500 will be described as an example. Referring to FIG. 27, the connection part 2500 may include a first connection plate 2510 and a second connection plate 2520. Although not shown in the drawings, the connector 2500 may further include a gasket (not shown) for preventing leakage.

28 is a view illustrating in detail the structure of the first connecting plate 2510 shown in FIG. 27. A plurality of holes 2512-1 to 2512-n penetrating the first connecting plate 2510 may be formed on the first connecting plate 2510. A plurality of pipes (refer to FIG. 26 and 2400-1 to 2400-n) may be connected to the plurality of holes 2512-1 to 2512-n, respectively. For example, the material of the first connection plate 2510 may be aluminum (Al), but is not limited thereto.

FIG. 29 is a view illustrating in detail the structure of the second connecting plate 2520 illustrated in FIG. 27. A plurality of grooves and holes 2522-1 to 2522-n may be formed on the second connecting plate 2520. Only the holes 2252-n may be formed to completely pass through the second connecting plate 2520, and the remaining grooves may not be formed to completely pass through the second connecting plate 2520.

The holes 2252-n correspond to holes 2252-n formed in the pipe (see FIG. 26, 2400-n) and the first connecting plate (see FIG. 28, 2510). The groove 2522-2 corresponds to the holes 2512-1 and 2512-2 formed in the pipes (see FIG. 26, 2400-1 and 2400-2) and the first connecting plate (see FIG. 28, 2510). do. That is, two pipes correspond to each of the remaining grooves except the hole 2252-n. Fluid (eg, water) flowing in a zigzag form through the pipes (see FIG. 26, 2400-1 to 2400-n) includes holes 2252-n formed in the first connecting plate (FIG. 28, 2510) and It is discharged to the outside through the holes (2522-n) formed in the second connecting plate (2520). In this figure, a case in which water is discharged through the connection part has been described as an example.

30 is a view showing a fluid flow in the pipe of the heat exchange apparatus using a magnetic material according to an embodiment of the present invention. Referring to FIG. 30, fluid is introduced through the pipe 2400-1. The introduced fluid will flow through the pipe 2400-2 along the hole formed in the connector 2500.

In more detail, the fluid flowing through the pipe 2400-1 passes through a hole (see FIG. 28, 2512-1) of the first connecting plate 2510, and then a groove of the second connecting plate 2520. (See FIG. 29, 2522-2). Then, the fluid passes through the hole (see Fig. 28, 2512-2) of the first connecting plate 2510, and then flows into the pipe 2400-2. As such, when the fluid passes through the pipes in a zigzag fashion, the fluid finally flows through the pipes 2400-n. Then, it is discharged to the outside through the holes (see FIG. 28 and 2510) of the first connecting plate 2510 and the holes (see FIG. 29 and 2522-n) of the second connecting plate 2520. That is, the pipe 2400-1 connected to the inlet port through which the fluid flows from the outside and the pipe 2400-n through which the fluid is discharged to the outside may be disposed adjacent to each other.

While fluid flows through holes or grooves formed in pipes 2400-1-2400-n and

connections

2500 and 2600, eddy currents are generated as the rotors 2100-1-2100-3 rotate The fluid is heated by the row heat.

31 is a view showing the structure of a flow path formed inside the pipes and the connecting portion. For the sake of understanding, the pipes and connections shown in FIG. 30 are shown unfolded to reveal the flow path. It can be seen that the fluid flows through one flow path while the fluid introduced through the inlet is discharged through the outlet.

Heat exchange apparatus using a magnetic material according to an embodiment of the present invention may include a pipe connected in a zigzag form to form one flow path. As a result, it is possible to secure sufficient time for the fluid to flow through the pipe and to efficiently use the Joule heat generated by the eddy current.

32 is a view showing a heat exchanger using a magnetic material according to another embodiment of the present invention. The heat exchanger shown in this figure is similar to the heat exchanger shown in FIG. 26 except for the structures of the

connections

2500 and 2600. In the heat exchange apparatus illustrated in FIG. 26, a flow path is formed in a zigzag form in one pipe unit, but in this embodiment, a flow path is formed in a zigzag form in three pipe units (hereinafter, referred to as a sub flow path).

FIG. 33 is a view illustrating in detail the structure of the connection unit 2500 illustrated in FIG. 32. The connecting part 2500 may include a first connecting plate 2510, a second connecting plate 2520, and a third connecting plate 2530. Although not shown in the drawings, the connection unit 2500 may further include a gasket (not shown) for preventing leakage. In addition, in this drawing, a case in which the fluid is discharged to the outside through the outlet 2532 of the connection part 2500 will be described as an example, and the following description will be given to the outside of the fluid through the inlet of the connection part (FIGS. The same applies to the inflow from.

Referring to FIG. 33, a plurality of holes penetrating the first connecting plate 2510 may be formed on the first connecting plate 2510.

A plurality of holes penetrating the second connecting plate 2520 may be formed on the second connecting plate 2520. Three holes among the holes formed on the first connection plate 2510 correspond to one hole formed on the second connection plate 2520. In this case, the hole formed on the second connection plate 2520 may be formed such that only a central portion thereof penetrates through the second connection plate 2520 as shown in the drawing. That is, a hole is formed on the second connecting plate 2520 so as to penetrate only a portion overlapping with the center hole among the three holes on the corresponding first connecting plate 2510.

A hole 2532 and a plurality of grooves may be formed on the third connecting plate 2530. As shown in the figure, the hole 2532 is formed to pass through the third connecting plate 2530, and the plurality of grooves are formed not to pass through the third connecting plate 2530. One hole formed on the second connecting plate 2520 corresponds to the hole 2532. In addition, two holes formed on the second connection plate 2520 correspond to the other grooves formed on the third connection plate 2530. Their correspondence is shown in dashed lines in the figures.

FIG. 34 is a sectional view of a portion A-B shown in FIG. 33. This figure is sectional drawing in the state which bonded the 1st connecting plate 2510, the 2nd connecting plate 2520, and the 3rd connecting plate 2530. FIG. Referring to FIG. 34, after the fluid flows through three holes formed on the first connection plate 2510, the fluid flows through one hole formed on the second connection plate 2520. Then, the fluid flowing along one groove formed on the third connecting plate 2530 passes through one hole formed on the second connecting plate 2520, and then three fluids formed on the first connecting plate 2510 are formed. Go through the hall. That is, among the plurality of holes formed on the first connection plate 2510, a flow path may be formed based on three holes (or three pipes connected to the three holes, that is, one sub-channel). have.

FIG. 35 is a view illustrating a fluid flow in a pipe of the heat exchange apparatus using the magnetic body illustrated in FIG. 32. Referring to FIG. 35, fluid is introduced through the inlet 2632. The introduced fluid will flow into three pipes along the hole formed in the connection portion 2600. As illustrated in FIG. 34, a sub flow path is formed based on three pipes as a basic unit. Then, the fluid will pass through the pipes in a zigzag form and then be discharged to the outside through the outlet 2532.

While the fluid passes through holes or grooves formed in the pipes and

connections

2500 and 2600, the fluid is heated by Joule heat generated by eddy currents generated as the rotors (not shown) rotate.

36 is a view showing a heat exchanger using a magnetic material according to another embodiment of the present invention. Referring to FIG. 36, the heat exchange apparatus 3000 using the magnetic material may include rotors 3100-1 to 3100-3, a rotation shaft 3300, and magnetic body insertion parts 3350.

The difference between the heat exchanger illustrated in the drawing and those described above is that long magnetic bodies are inserted through the magnetic body insertion unit 3350. As shown in the figure, the magnetic material is inserted into the internal space of the magnetic material insertion portion 3350. The space between the magnetic insert 3350 and the adjacent magnetic insert may prevent the magnetic body from overheating when the rotors 3100-1 to 3100-3 rotate at high speed.

37 is a view showing a heat exchanger using a magnetic material according to another embodiment of the present invention. The heat exchanger shown in FIG. 37 is basically the same as the heat exchanger shown in FIG. 36, and a plurality of pipes 3400-1 to 3400-n are provided around the heat exchanger. Cross sections of the plurality of pipes 3400-1 to 3400-n may be circular, as shown in the figure. The plurality of pipes 3400-1 to 3400-n may be in contact with adjacent pipes. In addition, the plurality of pipes 3400-1 to 3400-n may be appropriately disposed around the rotors 3100-1 to 3100-3 so as not to contact the rotors 3100-1 to 3100-3. .

38 to 40 are views illustrating a heat exchange apparatus using a magnetic material according to another embodiment of the present invention. The heat exchangers shown in FIGS. 38-40 are basically the same as the heat exchanger shown in FIG. 36, except for the shape of the pipes. Therefore, redundant descriptions will be omitted.

The cross sections of the pipes 3400-1 to 3400-n shown in FIG. 38 are trapezoidal in shape. The cross sections of the pipes 3400-1 to 3400-n shown in FIG. 39 are rectangular in the outside and circular in the fluid flow. The cross sections of the pipes 3400-1 to 3400-n shown in FIG. 40 are rectangular both outside and inside the fluid flows.

It will be apparent to those skilled in the art that the structure of the present invention may be variously modified or changed without departing from the scope or spirit of the present invention. In view of the foregoing, it is believed that the present invention includes modifications and variations of this invention provided they come within the scope of the following claims and their equivalents.

The present invention can be used for a heat exchanger using a magnetic material.

Claims

A rotor having a ring shape and including a plurality of magnetic bodies, wherein the plurality of magnetic bodies are disposed along the circumferential direction, each magnetic body having one surface of each of the magnetic bodies exposed on the outer surface of the rotor and Disposed on the inner surface of the magnetic material to reveal the other surface thereof;

A rotating shaft connected to the rotor along a central axis of the rotor in a direction perpendicular to the circumferential direction;

An inner pipe disposed along the inner surface of the rotor and having an inlet and an outlet; And

Heat exchanger using a magnetic material disposed along the outer surface of the rotor, including at least one outer pipe having an inlet and an outlet.
The method of claim 1,

The rotor is:

A rotor core having a ring shape, wherein one surface of the rotor core is provided with a plurality of grooves for fixing the plurality of magnetic bodies; And

And a fixing plate fastened to the rotor core to fix the plurality of magnetic bodies.
The method of claim 2,

Each of the magnetic body is a heat exchange apparatus using a magnetic body having a projection so that the respective magnetic body is fastened to the rotor core.
The method of claim 1,

The plurality of magnetic bodies are heat exchangers using a magnetic body in which the north pole and the south pole are alternately arranged on the outer surface of the rotor.
The method of claim 4, wherein

The at least one magnetic material is a heat exchange device using a magnetic material that is a samarium-based, or neodium-based magnet.
The method of claim 1,

The inner pipe is arranged in a zigzag form along the inner surface of the rotor, the inlet of the inner pipe and the outlet of the inner pipe heat exchange apparatus using a magnetic material facing the same direction.
The method of claim 1,

The at least one outer pipe is a heat exchanger using a magnetic material arranged in a zigzag form in the circumferential direction along the outer surface of the rotor.
The method of claim 1,

Heat exchanger using a magnetic material formed with a groove for increasing the surface area on the surface of the at least one outer pipe.
The method of claim 1,

Heat exchange device using a magnetic material is a ceramic coating layer and a silicon coating layer is formed on the surface of the inner pipe and the at least one outer pipe.
The method of claim 1,

Heat exchanger using the magnetic material is even number of the magnetic material.