KR101853794B1 - High efficiency and compact type transformer and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a high efficiency compact type transformer and a method of manufacturing the same, and more particularly, to a high efficiency compact type transformer which is capable of reducing the entire size thereof by reducing a thickness of a coil member, easily assembling the coil member and a core member, and improving the transformer efficiency by improving the cooling efficiency. An efficiency compact type transformer of the present invention includes: a core member having a hollow therein; a coil member including a secondary coil wound around the core member and stacked with several coil layers, and a primary coil wound around the secondary coil and stacked with several coil layers; and a main insulating sheet inserted between the core member and the secondary coil, and the primary coil, wherein the coil member includes a first winding part wound in a line from one end to the other end of the core member; a connecting part extending to one end of the core member while being bent in a direction perpendicular to the winding direction of the coil member at the first winding part that reaches the other end of the core member; and a second winding part connected to the connecting part and wound on an upper portion of the first winding part in the same direction as the first winding part, wherein the main insulating sheet is disposed between the first and second winding parts.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a high efficiency compact transformer and a method of manufacturing the same. BACKGROUND OF THE INVENTION < RTI ID =

The present invention relates to a high-efficiency compact transformer and a method of manufacturing the same. More particularly, the present invention relates to a high-efficiency compact transformer and a method of manufacturing the transformer. Efficiency compact transformer capable of increasing the output voltage of the transformer.

Typically, a transformer includes a power transformer connected to a transmission / distribution line according to the intended use and a coupling transformer used in an electronic circuit.

In particular, the power transformer changes a certain voltage applied to the AC circuit to a voltage higher or lower than the voltage to which the power is not changed.

The power transformer includes a primary winding connected to the power source and a secondary winding connected to the load.

The corrugated core transformer has an outer iron-type transformer having a coil formed inside, a core surrounding the coil, and an iron-steel transformer disposed inside the core and having a coil surrounding the core.

The structure of a general transformer may be different depending on the capacity and the voltage, but it is essentially composed of a coil member and a core member in order to perform the function of the transformer in common.

The coil member and the core member are mounted in a case filled with the insulating oil. The insulating oil filled in the case prevents heat from the coil member and the core member while cooling the coil member and the core member, It plays a role.

In addition, an interlayer insulating paper is inserted between the coil layers constituting the coil member.

The conventional transformer increases the amount and thickness of the interlayer insulating paper in order to prevent mutual interference of induced voltages generated in a plurality of coil layers constituting the coil member.

Therefore, the overall thickness of the coil member becomes large, which leads to an increase in the overall size of the transformer.

In addition, there is a drawback that it is difficult to assemble the coil member and the core member.

In addition, a duct member for cooling is inserted between the coil layers constituting the coil member. However, since the duct member is disposed between the same coil layers in the past, only the specific coil layer is cooled and the cooling efficiency is lowered, Lt; RTI ID = 0.0 > efficiency.

Patent No. 10-1481057 [0008]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to reduce the amount of insulating paper disposed between coil members, thereby reducing the overall size of the coil member and the transformer, It is an object of the present invention to provide a high efficiency compact transformer which can easily assemble a member and a coil member and can more effectively cool the coil layer constituting the coil member to increase the overall efficiency of the transformer, and a method of manufacturing the same.

According to an aspect of the present invention, there is provided a high efficiency compact transformer including: a core member having a hollow portion therein; A coil member wound around the core member and stacked with a plurality of coil layers, and a coil member wound around the secondary coil and stacked with a plurality of coil layers; And a main insulating paper inserted between the core member, the secondary coil and the primary coil, wherein the coil member includes: a first winding part wound in a line from one end to the other end of the core member; A connecting portion that is bent in a direction perpendicular to the winding direction of the coil member at the first winding portion that reaches the other end of the core member and extends to one end of the core member; And a second winding section connected to the connection section and wound around the upper portion of the first winding section in the same direction as the first winding section, wherein the main insulating paper is provided between the first winding section and the second winding section And the like.

And a sub insulating sheet coupled to the main insulating sheet to surround the connecting portion bent in a direction perpendicular to the winding direction of the coil member.

The sub-insulating paper may include a first cover opened in one direction orthogonal to the connecting portion and enclosing the connecting portion so as to be disposed therein; And a second cover which is opened in the other direction perpendicular to the connection portion and encloses the connection portion so as to be disposed therein, wherein the first cover and the second cover, which surround the connection portion in mutually opposite directions, partially overlap each other, And is fixedly coupled to insulating paper.

Alternatively, the sub-insulating paper may be laminated on the main insulating paper, and one end of the sub-insulating paper may be wrapped around the connecting part.

And a plurality of duct members disposed between the plurality of coil layers to form a cooling passage between the coil layers, wherein the duct member includes: a first duct disposed at one side of the core member; And a second duct disposed on the other side opposite to the first side of the core member, the coil layer in which the first duct is disposed and the coil layer in which the second duct is disposed are different from each other and are formed by the first duct And a second cooling passage formed by the second duct are formed between different coil layers.

Wherein the coil layer includes a first coil layer, a second coil layer, and a third coil layer stacked in the vertical direction on the core member, and the first duct includes a first coil layer and a second coil, And the second duct is disposed between the second coil layer and the third coil layer to form a second cooling furnace, and the first cooling furnace, the second cooling furnace, Are formed between different coil layers.

Wherein the coil member further comprises a tertiary winding wound around the core member, wherein the tertiary coil is wound on the core member together with the secondary coil in a lateral direction of the secondary coil, It is connected to the IOT sensor and supplies power to the IOT sensor.

According to another aspect of the present invention, there is provided a method of manufacturing a high-efficiency compact transformer, comprising the steps of: forming a plurality of coil layers wound in a hollow shape by lamination; Wherein the coil member is inserted into the coil member so that the coil member is wound in a line from one end of the core member to the other end to form a first winding portion and the first winding portion arriving at the other end of the core member The coil member is bent in a direction perpendicular to the winding direction of the coil member to form a connection portion extending to one end of the core member and connected to the connection portion so as to be wound on the upper portion of the first winding portion in the same direction as the first winding portion, And a main insulating paper is disposed between the first winding section and the second winding section.

And wrapping the connecting portion bent in a direction perpendicular to the winding direction of the coil member with sub-insulating paper that is coupled to the main insulating paper.

Wherein the sub-insulating paper comprises a first cover and a second cover, and the first cover opened in one direction orthogonal to the connecting portion is wrapped around the connecting portion in such a manner that the connecting portion is disposed therein, The second cover is enclosed with the connection portion disposed therein, and the first cover and the second cover, which surround the connection portion in opposite directions, partially overlap each other and are fixedly coupled to the main insulation paper.

Alternatively, the sub-insulating paper is laminated on the main insulating paper, and one end of the sub-insulating paper is wound to cover the connecting part.

Wherein a duct member is interposed between a plurality of coil layers constituting the coil member to form a cooling passage between the coil layers, the duct member being disposed on one side of the core member And a second duct disposed on the other side opposite to the first side of the core member, wherein the first duct and the second duct are disposed between different coil layers, and the first duct And a second cooling path formed by the second duct are formed between different coil layers.

Wherein the coil layer comprises a first coil layer laminated on the core member in a vertical direction, a second coil layer, and a third coil layer, wherein the first coil layer, the second coil layer, One duct is inserted and arranged to form the first cooling passage and the second duct is inserted between the second coil layer and the third coil layer to form the second cooling passage, So that the second cooling path is formed between the different coil layers.

According to the high efficiency compact type transformer of the present invention as described above, the following effects can be obtained.

The coil member of the present invention is arranged such that the connecting portion connecting the first winding portion and the second winding portion is arranged in a direction orthogonal to the winding direction of the winding and the connecting portion is further wrapped with the sub- It is possible to reduce the electrical stress generated in the semiconductor device and to prevent the mutual induction voltage from being interfered with.

Therefore, the amount of the interlayer insulating paper, i.e., the main insulating paper, disposed between the first winding part and the second winding part can be reduced and the thickness can be reduced, thereby reducing the cost and thickness of the coil member, The length can be reduced and the load loss can be reduced.

Further, since the thickness of the coil member can be reduced, the overall size of the transformer can be compactly reduced.

Further, since the present invention forms the core member and then performs the heat treatment, it is possible to prevent the physical properties from being changed when the core member is manufactured.

Further, since the core member is fabricated by being divided into the first iron core portion and the second iron core portion and then assembled, the coil member and the core member can be easily assembled, and the weight of the core member can be reduced while maintaining the magnetic flux size of the core member. have.

In addition, since the duct member is disposed between the different coil layers to form the cooling furnace, it is possible to maximize the overall efficiency of the transformer by increasing the cooling effect of the windings.

Also, by supplying power to the IOT sensor through the tertiary coil, the IOT sensor is supplied with power from the tertiary coil, and self-diagnosis for prevention of failure of the transformer is possible.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a state of engagement between an iron core member and a coil member according to an embodiment of the present invention;
2 is an exploded perspective view of an iron core member and a coil member according to an embodiment of the present invention,
3 is a plan view of an iron core according to an embodiment of the present invention,
FIG. 4 is a view illustrating a manufacturing process of an iron core according to an embodiment of the present invention.
5 is a view illustrating a winding process of the coil member according to the embodiment of the present invention,
6 is a partially exploded perspective view of a coil member according to an embodiment of the present invention,
7 is a view illustrating a process of manufacturing a coil member according to an embodiment of the present invention,
Fig. 8 is a sectional structure view of the coil member taken along the line AA in Fig. 7,
9 is a view illustrating a process of manufacturing a coil member according to another embodiment of the present invention,
Fig. 10 is a sectional structure view of the coil member taken along line BB in Fig. 9,
11 is a cross-sectional structural view of a coil member according to another embodiment of the present invention,

1 and 2, the high efficiency compact type transformer of the present invention includes a core member 10, a coil member 20, a main insulating paper 30, a sub insulating paper 40, and a duct member (not shown) 51, 52, and so on.

The core member 10 is made of a metal such as an iron core or aluminum, and has a hollow portion formed therein.

2 to 4, the core member 10 includes a first iron core 11 and a second iron core 15 joined to each other.

As shown in FIG. 2, the first iron core 11 is formed by stacking a plurality of metal plates, and includes a first support portion 12 and a first bent portion 13.

As shown in FIG. 2, the second iron core unit 15 is formed by stacking a plurality of metal plates, and includes a second support portion 16 and a second bent portion 17.

The first support portion 12 and the second support portion 16 face each other and are disposed apart from each other.

The first bent portion 13 is formed by bending in the same direction at one end and the other end of the first support portion 12.

The second bent portion 17 is formed by being bent at one end and the other end of the second supporting portion 16 in the direction of the first bent portion 13.

Therefore, the first iron core part 11 and the second iron core part 15 have a shape of '⊂' and '⊃', respectively.

The first iron core 11 and the second iron core 15 are coupled to each other to form the hollow portion in the core member 10.

The ends of the first bent portion 13 and the second bent portion 17 facing each other when the first iron core portion 11 and the second iron core portion 15 are coupled to each other are spaced apart from each other, 18 are formed.

In addition, the first iron core parts 11 are formed of a plurality of inner and outer layers, and the second iron core parts 15 are formed of a plurality of inner and outer layers.

At this time, the plurality of spacers 18 formed between the plurality of first bent portions 13 and the second bent portions 17 are formed at different positions from the adjacent spaced apart portions 18.

That is, the plurality of spacers 18 formed by the first iron core 11 and the second iron core 15 are formed at different positions, and are not communicated with each other.

As described above, since the plurality of spacers 18 formed between the first iron core 11 and the second iron core 15 are formed at different positions, it is possible to disperse locally generated high magnetic flux density portions So that the increase of no-load loss can be minimized.

The first iron core 11 and the second iron core 15 are separated from each other and are tightened with a band after they are pressed against each other so that the first iron core 11 and the second iron core 15 are separated .

1, 2 and 4, the coil member 20 is wound around the first support portion 12 or the second support portion 16, and the coil member 20 is wound around the first support portion 12 or the second support portion 16, (18) is formed in a portion where the coil member (20) is not wound.

As described above, since the spacing portion 18 is formed in a portion not wound by the coil member 20, the user can visually recognize the spacing portion 18, and the first iron core portion 11, And the second iron core portion 15 can be easily inserted into the coil member 20.

The coil member 20 includes the secondary coil 20a and the primary coil 20b so as to surround the first support portion 12 and the second support portion 16 in detail in the core member 10 .

The secondary coil 20a is disposed inside the coil member 20 and is wound on the core member 10 and laminated with a plurality of coil layers.

The primary coil 20b is disposed outside the coil member 20 and is wrapped around the secondary coil 20a and laminated with a plurality of coil layers.

6 and 7, the coil member 20 is divided into a first winding portion 21, a connecting portion 22, and a second winding portion 23.

The first winding part 21 is wound around the core member 10 from one end to the other end of the core member 10 in a line from top to bottom in the figure, 10 to the other end.

The connecting portion 22 is bent in the direction perpendicular to the winding direction of the coil member 20 at the first winding portion 21 reaching the other end of the core member 10, As shown in Fig.

The second winding section 23 is connected to the connection section 22 and wound around the first winding section 21 in the same direction as the first winding section 21.

That is, the second winding part 23 means a coil layer wound on the first winding part 21.

The first winding section 21 and the second winding section 23 form respective coil layers and the first winding section 21, the connecting section 22 and the second winding section 23 are formed by one And the coils are connected to each other.

The first winding portion 21, the connecting portion 22 and the second winding portion 23 are formed in the secondary coil 20a and the primary coil 20b, respectively.

The main insulating paper 30 is inserted between the core member 10, the secondary coil 20a and the primary coil 20b as shown in FIGS.

The main insulating paper 30 is disposed between the first winding portion 21, the connecting portion 22 and the second winding portion 23.

6 to 8, the sub insulating sheet 40 surrounds the connecting portion 22, which is coupled to the main insulating paper 30 and is bent in a direction perpendicular to the winding direction of the coil member 20.

The connection portion 22 moving in a direction orthogonal to the upper portion of the first winding portion 21 is once wrapped with the sub insulating paper 40 so that when the coil member 20 is energized It is possible to minimize the influence of the electric field generated in the connection portion 22 on the electric field generated in the first winding portion 21 and the second winding portion 23.

8, the sub-insulating paper 40 includes a first cover 41 which is opened in one direction perpendicular to the connecting portion 22 and encloses the connecting portion 22 so as to be disposed therein, And a second cover 42 which is opened in the other direction orthogonal to the first cover 22 and encloses the connection portion 22 so as to be disposed therein.

The first cover 41 has a substantially ⊂ shape, and the second cover 42 has a substantially ⊃ shape.

The first cover 41 and the second cover 42, which partially surround the connecting portion 22 in the direction opposite to the first cover 41 and the second cover 42, are partially overlapped with each other, (30).

9 or 10, the sub-insulating paper 40 is laminated on the main insulating paper 30, one end of the sub-insulating paper 40 is wound around the connecting portion 22, The sub-insulating paper 40 may surround the connection portion 22. [

As shown in FIG. 5, the duct members 51 and 52 are formed of a number of coil layers 25, 26 and 27 and are arranged between the coil layers 25, 61, 62).

The duct members (51, 52) are rod-shaped and arranged between the coil layers (25, 26, 27) and arranged in a direction perpendicular to the stacking direction of the coil layers The cooling passages 61 and 62 are formed.

The duct members 51 and 52 include a first duct 51 disposed on one side of the core member 10 and a second duct 51 disposed on the opposite side of the core member 10 And two ducts 52.

A first cooling passage (61) formed by the first duct (51) is different from a coil layer in which the first duct (51) is disposed and a coil layer in which the second duct (52) The second cooling passages 62 formed by the second ducts 52 are formed between the different coil layers.

5, the coil layer includes a first coil layer 25, a second coil layer 26, and a third coil layer 27 stacked in the outward direction from the center, .

The first duct 51 is disposed between the first coil layer 25 and the second coil layer 26 to form a first cooling path 61.

The second duct 52 is disposed between the second coil layer 26 and the third coil layer 27 to form a second cooling path 62.

That is, the first duct 51 is disposed between the first coil layer 25 and the second coil layer 26, and the duct is formed between the second coil layer 26 and the third coil layer 27, And the first duct 51 and the second duct 52 are disposed between different coil layers.

The first cooling passage 61 and the second cooling passage 62 are formed between different coil layers by the arrangement of the first duct 51 and the second duct 52 as described above.

Accordingly, the first coil layer 25 is cooled by the first cooling path 61 formed at one side of the core member 10, and the second coil layer 25 formed at the other side of the core member 10, And cooled by the cooling furnace 62.

Since the duct member is inserted between the same coil layers, for example, between the first coil layer 25 and the second coil layer 26 on one side and the other side of the core member 10, The gap between the second coil layer 26 and the third coil layer 27 could not be cooled even though the first coil layer 25 and the second coil layer 26 could be cooled on both sides of the first coil layer 25 and the second coil layer 26. [

On the contrary, in the present invention, since the duct member is inserted between the different coil layers on one side and the other side of the core member 10, for example, the first duct 51 is formed on one side of the core member 10 And the second duct 52 is disposed between the second coil layer 26 and the third coil layer 26 on the other side of the core member 10. The second coil layer 26 is disposed between the first coil layer 25 and the second coil layer 26, The second coil layer 26 and the third coil layer 27 are not only cooled between the first coil layer 25 and the second coil layer 26 because they are disposed between the first coil layer 25 and the second coil layer 27, Can also be cooled.

Therefore, since the present invention forms a cooling passage between a plurality of coil layers and cools the spaces between the coil layers, it is possible to increase the cooling efficiency of the coil member 20 and to increase power generation and transforming efficiency.

The coil member 20 of the present invention may further include a tertiary coil 20c wound around the core member 10 as shown in FIG.

The tertiary coil 20c is wound on the core member 10 together with the secondary coil 20a in the lateral direction of the secondary coil 20a.

The tertiary coil 20c is connected to a separately provided IOT sensor (not shown) to supply power to the IOT sensor.

By supplying power to the IOT sensor through the tertiary coil 20c, power can be supplied to the IOT sensor through self-power generation of the transformer, and the IOT sensor, which is supplied with power from the tertiary coil 20c, It is possible to carry out a self-diagnosis for preventing malfunction of the battery.

Hereinafter, a manufacturing method of the high efficiency compact type transformer of the present invention having the above-described structure will be described.

First, as shown in FIG. 6, the coil member 20 is formed into a hollow shape by stacking a plurality of coil layers wound in a hollow shape.

A main insulating paper 30 is wrapped around a separate bobbin, and a wire is wound on the main insulating paper 30 to form the coil member 20.

That is, as shown in FIG. 7 (a), the first coil layer 25 or the first winding portion 21 is formed by winding the bobbins in a line from one end to the other end of the bobbin, The main insulating paper 30 is covered on the upper portion of the first winding part 21 as shown in FIG.

Then, as shown in Fig. 7 (c), the first winding section 21, which has reached the other end of the bobbin, is bent in a direction perpendicular to the winding direction of the coil member 20, Thereby forming a connection portion 22.

After the connection portion 22 is formed by bending the first winding portion 21, the connection portion 22 is wrapped with the sub insulating paper 40 as shown in FIG. 7 (d).

The method of wrapping the connection portion 22 with the sub insulating paper 40 may be performed by connecting the sub insulating paper 40 composed of the first cover 41 and the second cover 42 to the connection portion 22, By overlapping on both sides thereof.

The sub-insulating paper 40 may be wound around one end of the sub-insulating paper 40 laminated on the main insulating paper 30 as shown in FIGS. 9 (b) to 9 (d) So that the connection portion 22 is enclosed.

7 (e), the connecting portion 22 is bent in the same direction as the first winding portion 21, and the main insulating paper 30 (FIG. 7 7 (g) and Fig. 6, after the first winding section 21 is completely covered with the first winding section 21, the upper portion of the first winding section 21 in the same direction as the first winding section 21 The second coil layer 26 or the second winding portion 23 is formed.

At this time, the main insulating paper 30 is disposed between the first winding part 21, the connecting part 22 and the second winding part 23.

The above operation is repeated to form the coil member 20 having a plurality of coil layers.

9 and 10 is characterized in that the sub insulating paper 40 is laminated on the main insulating paper 30 and one end of the sub insulating paper 40 is wrapped around the connecting part 22 The remaining contents are the same, and a detailed description thereof will be omitted.

When forming the coil layer, as shown in FIG. 5, the duct member is interposed between a plurality of coil layers to form a cooling passage between the coil layers.

The first duct 51 disposed at one side of the core member 10 is disposed between the first coil layer 25 and the second coil layer 26 and the center of the core member 10 The second duct 52 disposed on the other side is disposed between the second coil layer 26 and the third coil layer 27 so that the first cooling passage 61 formed by the first duct 51, The second cooling path 62 formed by the second duct 52 is formed between the different coil layers so that more coil layers can be cooled.

4 (a), a plurality of metal plates cut as shown in FIG. 4 (b) are laminated, and then the metal plate is cut As shown in FIG. 4 (c), both ends of a plurality of metal plates are bent in the same direction to form ⊂ shaped iron core parts 11 and 15.

At this time, as shown in FIG. 4 (b), the metal sheet laminated is cut and lengthened so as to be gradually lengthened upward or downward, and then the metal plate is bent and formed into iron cores 11 and 15 A metal plate having a short length is disposed on the inner side and a metal plate having a long length is disposed on the outer side so that both ends bent when the metal plate is bent are disposed at the same position.

After molding the iron core portion bent at both ends as described above, the molded iron core portion is heat-treated.

4 (c) and 4 (d), the iron core portion is formed by laminating a plurality of metal plates, and the iron core portions are assembled while being laminated inside and out at the time of assembly.

Fig. 4 (c) and Fig. 4 (d) show a plurality of iron cores formed by bending both ends of the laminated metal plate shown in Fig. 4 (b) Shows that a plurality of metal plates are laminated only on the iron core portion, and actually, a plurality of metal plates are actually laminated on the other iron core portions.

In Fig. 2, a plurality of metal plates are laminated to form an iron core, and a plurality of such iron core cores are stacked to form the core member 10. As shown in Fig.

As compared with the prior art in which a core member is formed by molding or cutting after heat treatment because the core member 10 is subjected to heat treatment after forming the core member 10 in manufacturing the core member 10, The change can be minimized.

When the iron core parts 11 and 15 are completed, as shown in FIG. 4 (d), the iron core parts 11 and 15 are respectively inserted into the two coil members 20, Thereby assembling the coil member 20 and the core member 10 together.

That is, the first iron core 11 and the second iron core 15 are inserted into the two coil members 20, respectively.

At this time, the first support part 12 of the first iron core part 11 and the support part of the second iron core part 15 are disposed inside the coil member 20 different from each other.

1, 2 and 4 (d), the first iron core 11 and the second iron core 15 inserted into the two coil members 20, (13) and the second bent portion (17) are disposed to face each other, and then bent and fastened to form the core member (10) coupled to the coil member (20).

Therefore, the present invention can facilitate the fastening of the coil member 20 and the core member 10.

Particularly, since the spacing portion 18 formed apart from the first iron core portion 11 and the second iron core portion is disposed in a different direction than the portion where the coil member 20 is wound, The first iron core 11 and the second iron core 15 are easily assembled to each other.

Since the coil member 20 has the structure of the first winding section 21, the connecting section 22 and the second winding section 23 as described above, the first winding section 21 and the second winding section 23, It is possible to reduce the electrical stress generated in the second winding portion 23 and thereby reduce the amount of the main insulating paper 30 disposed between the first winding portion 21 and the second winding portion 23, It is possible to reduce the thickness and the thickness of the coil member.

In addition, since the thickness of the coil member 20 can be reduced, the overall size of the transformer can be reduced, and the winding length of the coil member 20 can be reduced, thereby reducing the load loss.

By forming the cooling passages between the different coil layers by the duct member, it is possible to maximize the overall efficiency of the transformer by increasing the cooling effect of the windings.

The high efficiency compact type transformer and the manufacturing method thereof according to the present invention are not limited to the above-described embodiments but can be variously modified within the scope of the technical idea of the present invention.

A first iron core portion and a second iron core portion having a first core portion and a second core portion, wherein the first core portion, the second core portion, the second core portion, the second core portion,
The first coil is wound around the first coil and the second coil is wound around the coil so that the first coil and the second coil are connected to each other. A second coil layer, 27: a third coil layer,
30: main insulating paper,
40: sub-insulating paper, 41: first cover, 42: second cover,
50: duct member, 51: first duct, 52: second duct,
61: first cooling furnace, 62: second cooling furnace.

Claims (13)

A core member having a hollow portion therein;
A coil member wound around the core member and stacked with a plurality of coil layers, and a coil member wound around the secondary coil and stacked with a plurality of coil layers;
And a main insulating paper inserted between the core member, the secondary coil and the primary coil,
Wherein the coil member comprises:
A first winding section wound in a line from one end to the other end of the core member;
A connecting portion that is bent in a direction perpendicular to the winding direction of the coil member at the first winding portion that reaches the other end of the core member and extends to one end of the core member;
And a second winding part connected to the connection part and wound on the upper part of the first winding part in the same direction as the first winding part,
Wherein the main insulating paper is disposed between the first winding part and the second winding part. The method according to claim 1,
Further comprising: a sub-insulating paper sheet coupled to the main insulating paper so as to surround the connecting portion bent in a direction perpendicular to the winding direction of the coil member. The method of claim 2,
The sub-
A first cover opened in one direction orthogonal to the connection portion and surrounding the connection portion so as to be disposed therein;
And a second cover which is opened in the other direction orthogonal to the connection portion and encloses the connection portion so as to be disposed therein,
Wherein the first cover and the second cover that surround the connection portion in opposite directions are fixedly coupled to the main insulating paper while being partially overlapped with each other. The method of claim 2,
Wherein the sub-insulating paper is stacked on the main insulating paper,
And one end of the sub-insulating paper is wound around the connection portion. The method according to claim 1,
And a plurality of duct members disposed between the plurality of coil layers to form a cooling passage between the coil layers,
The duct member includes a first duct disposed at one side of the core member and a second duct disposed at the other side opposite to the first side of the core member,
A first cooling duct formed by the first duct and a second cooling duct formed by the second duct are different from each other in a coil layer in which the first duct is disposed and a coil layer in which the second duct is disposed, Wherein the first and second coil layers are formed between different coil layers. The method of claim 5,
Wherein the coil layer includes a first coil layer, a second coil layer, and a third coil layer stacked in the vertical direction on the core member,
Wherein the first duct is disposed between the first coil layer and the second coil layer to form a first cooling furnace,
The second duct is disposed between the second coil layer and the third coil layer to form a second cooling furnace,
Wherein the first cooling path and the second cooling path are formed between different coil layers. The method according to claim 1,
Wherein the coil member further comprises a tertiary winding wound around the core member,
The tertiary coil is wound on the core member together with the secondary coil in the lateral direction of the secondary coil,
And the tertiary coil is connected to the IOT sensor to supply power to the IOT sensor. A method of manufacturing a high efficiency compact transformer,
The coil member is formed by laminating a plurality of coil layers wound in a hollow shape,
A core member is inserted into the coil member,
In forming the coil member,
Wherein the core member is wound in a line from one end to the other end to form a first wound portion,
A first winding section that reaches the other end of the core member and is bent in a direction perpendicular to the winding direction of the coil member to form a connection portion extending to one end of the core member,
And a second winding part connected to the connection part and wound on the upper part of the first winding part in the same direction as the first winding part,
Wherein a main insulating paper is disposed between the first winding section and the second winding section. The method of claim 8,
And wrapping the connecting portion bent in a direction perpendicular to the winding direction of the coil member with a sub insulating sheet coupled to the main insulating sheet. The method of claim 9,
Wherein the sub-insulating paper comprises a first cover and a second cover,
The first cover opened in one direction orthogonal to the connection portion is wrapped with the connection portion disposed therein and the second cover opened in the other direction orthogonal to the connection portion is wrapped with the connection portion disposed therein,
Wherein the first cover and the second cover are fixedly coupled to the main insulating paper so that a part of the first cover and the second cover that surround the connecting portion in mutually opposite directions are overlapped with each other. The method of claim 9,
Wherein the sub-insulating paper is stacked on the main insulating paper,
And one end of the sub-insulating paper is wound so as to surround the connecting portion. The method of claim 8,
In forming the coil member,
A duct member is inserted between a plurality of coil layers constituting the coil member to form a cooling passage between the coil layers,
The duct member includes a first duct disposed at one side of the core member and a second duct disposed at the other side opposite to the first side of the core member,
The first duct and the second duct are disposed between different coil layers so that a first cooling path formed by the first duct and a second cooling path formed by the second duct are formed between different coil layers To thereby form a high-efficiency compact transformer. The method of claim 12,
Wherein the coil layer includes a first coil layer, a second coil layer, and a third coil layer stacked in the vertical direction on the core member,
The first duct is inserted between the first coil layer and the second coil layer to form the first cooling furnace,
The second duct is inserted between the second coil layer and the third coil layer to form the second cooling furnace,
Wherein the first cooling path and the second cooling path are formed between different coil layers. ≪ RTI ID = 0.0 > 11. < / RTI >

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