KR101743629B1 - Transformer using fluid tube - Google Patents

Abstract

A transformer according to an embodiment of the present invention includes a base, a plurality of cores disposed on the base and spaced apart from each other, and a plurality of cores adjacent to each other when the voltage is applied are alternately arranged in N and S poles, And a fluid tube which is bent so as to surround the primary coil and which heats the fluid passing through the induction current flowing by the primary coil, wherein the fluid tube is partially adjacent to the N pole of the core And another portion is disposed adjacent to the S pole of the core.

Description

[0001] TRANSFORMER USING FLUID TUBE [0002]

The present invention relates to a transformer using a fluid tube, and more particularly, to a transformer using a fluid tube as a secondary coil.

Generally, a transformer is used for transmission of alternating current power by winding two coils insulated from each other with the core as a common conductor. Among the two sets of coils, the coil connected to the power source side is referred to as a primary coil, and the coil connected to the load side is referred to as a secondary coil, and an arbitrary voltage can be taken out by the ratio of the number of coils.

On the other hand, since the secondary coil is connected to the load side to generate heat in the course of transforming the voltage, means for cooling the heat is required in order to continuously transform the secondary coil.

In this case, if a separate means for cooling the heat is provided, the total volume of the transformer is considerably large, which is very disadvantageous for manufacturing a small-sized transformer.

Korean Patent Publication No. 10-2008-0025533 (published on March 21, 2008)

A transformer capable of cooling a heat of a secondary coil and serving as a boiler by passing a fluid through a fluid tube serving as a secondary coil is provided.

A transformer according to an embodiment of the present invention includes a base, a plurality of cores disposed on the base, a plurality of cores spaced from each other on the base, and a plurality of cores, A fluid tube which is bent to surround the coil and the primary coil and which induces a current induced by the primary coil to heat the fluid to be passed therethrough and is disposed on the back surface of the induction coil and is electrically connected to the fluid tube through the fluid tube Further comprising a metal plate, wherein the fluid tube and the metal plate are integrally formed.

The fluid tube may wrap the primary coil so that a portion is disposed adjacent the N pole of the core and another portion is disposed adjacent the S pole of the core.

Further comprising a permanent magnet disposed between each of the cores and the primary coil for increasing the intensity of the induced current flowing through the fluid tube, and the permanent magnet may be arranged to have the same magnetic pole as the magnetic pole of the adjacent core.

According to an embodiment of the present invention, the heat generated in the fluid pipe corresponding to the secondary coil can be cooled through the fluid flowing inside the fluid pipe.

In addition, it can serve as a transformer for transforming a voltage and a boiler for heating a fluid.

Since the fluid is heated by reacting the fluid tube using a magnetic field rather than a direct heating method, it is possible not only to be safe from fire but also to reduce the risk of fire.

Further, since the magnetic field can be amplified by the current in the closed loop formed by the heating plate and the fluid tube, the heating efficiency is extremely high, and the time required for heating can be reduced.

1 is a front perspective view of a transformer in accordance with an embodiment of the present invention.
2 is a rear perspective view of the transformer shown in Fig.
3 is a front view of the transformer shown in Fig.
4 is a cross-sectional view of the induction tube shown in Fig.
5 is a cross-sectional view of a guide tube according to another embodiment of the present invention.
6 is a front view of a transformer in accordance with another embodiment of the present invention.
7 is a front view of a transformer in accordance with another embodiment of the present invention.

The details of other embodiments are included in the detailed description and drawings. The advantages and features of the described techniques, and how to achieve them, will become apparent with reference to the embodiments described in detail below with reference to the drawings. Like reference numerals refer to like elements throughout the specification.

The transformer 100 according to the present invention relates to a transformer to which a three-phase voltage is supplied. The transformer 100 includes a primary coil 130 through which a current flows by a three-phase voltage, and a fluid pipe through which a current is induced by the primary coil 130 140 to cool the fluid tube 140 through the fluid flowing in the fluid tube 140. [ Accordingly, the fluid in the fluid pipe 140 absorbs the heat of the heat-generating fluid pipe 140 and is heated, so that it can serve as a boiler. In addition, since there is no need to add additional cooling means, the capacity of the transformer having a boiler function can be minimized.

1 is a front perspective view of a transformer in accordance with an embodiment of the present invention. 2 is a rear perspective view of the transformer shown in Fig. 3 is a front view of the transformer shown in Fig. 4 is a cross-sectional view of the induction tube shown in Fig.

1 to 4, a transformer 100 according to an embodiment of the present invention includes a base 110, a core 120, a primary coil 130, a fluid tube 140, and a metal plate 150 And consists of three phases.

The base 110 supports the core 120 and is formed as a non-conductor.

The core 120 is, for example, three vertically spaced from each other on the base 110, and vertically disposed on the base 110. The core 120 may include a magnetic core made of ferrite so as to have high permeability and low conductivity.

In addition, the core 120 includes a lower fixing plate 121a and an upper fixing plate 121b for fixing a plurality of cores 120 to upper and lower ends. The lower fixing plate 121a is disposed between the base 110 and the core 120 to fix the core 120 and the upper fixing plate 121b is disposed on the core 120 to fix the core 120. [ At this time, a terminal 122 capable of supplying power to the primary coil 130 is disposed on the upper fixing plate 121b.

The terminals 122 are connected to corresponding cores 120, respectively, and three phase voltages having different phases are applied. At this time, the three-phase circuit is connected in a delta manner.

A plurality of induction tubes 123 are housed in corresponding cores 120, respectively.

The transformer 100 may further include a shield plate (not shown) disposed between the core 120 and the base 110 to shield the induced magnetic field. In this case, the induction magnetic field generated by the primary coil 130 is prevented from being dispersed to the bottom surface, and the heating of the fluid by the alternating magnetic flux is improved. Thus, the heat efficiency can be increased.

The transformer 100 may further include a shielding member 120a surrounding the outer circumferential surface of the core 120. [ In this case, the shielding member 120a prevents current flow between the core 120 and the primary coil 130, thereby preventing the induction magnetic field from being reduced.

A plurality of primary coils 130 are wound several times at a predetermined winding ratio for each of the cores 120. The primary coil 130 is wound on the core 120 so that when the voltage is applied, adjacent portions of the plurality of cores 120 are wound to have different magnetic poles. That is, the portions adjacent to each other among the plurality of cores are wound so as to be alternately arranged to the N-pole and the S-pole.

For example, the primary coil 130 is wound such that the core 120 disposed at both ends has the N pole at the upper portion and the S pole at the lower portion with respect to the base 110. Further, the core 120 disposed in the middle is wound so that the upper portion has the S pole and the lower portion has the N pole.

However, as another example of the primary coil 130, the core 120 disposed at both ends may be wound such that the upper pole has the S pole and the lower pole has the N pole, and the core 120 disposed in the middle has the N pole, And the lower portion may have an S-pole.

As a result, the strength of the magnetic field formed between the adjacent portions of the core 120 becomes stronger, so that the time for heating the fluid can be reduced since the fluid tube 140 disposed in the stronger alternating magnetic flux is heated relatively quickly.

Here, the primary coil 130 receives a voltage from the outside, and may be supplied with an AC voltage of three-phase voltage, for example. In addition, the part connected to the three-phase voltage is connected by the delta wiring method, and the AC voltage is applied.

In addition, the primary coil 130 can be rewound and wound in a direction opposite to the direction in which the primary coil 130 was wound on the core 120. In this case, the life of the primary coil 130 can be increased.

The fluid tube 140 is bent and disposed so as to surround the primary coil 130 wound on the core 120 and serves as a secondary coil in which current is induced by electromagnetic induction of the primary coil 130. That is, alternating current flows to the fluid pipe 140 by the alternating current applied to the primary coil 130. Thereby, the fluid tube 140 heats the fluid passing through the fluid tube 140.

The fluid tube 140, for example, surrounds each of the vertical cores 120 with a predetermined inclination angle. That is, the fluid tube 140 diagonally surrounds the core 120 so that a part of the fluid tube 140 is disposed close to the core 120 having the N pole, and another part of the fluid tube 140 Is disposed close to the core 120 having the S-pole.

In this case, since the fluid tube 140 is positioned in the region where the intensity of the alternating magnetic flux is greatest, the intensity of the induced current flowing through the fluid tube 140 becomes stronger, and furthermore, more heat is generated in the fluid tube 140 The fluid can be heated more efficiently.

The fluid tube 140 is made of an electric conductor that can be induction-heated. Among the conductors, the fluid tube 140 may be a magnetic body that is easier to heat than a non-ferrous metal and has a good heating efficiency.

The fluid pipe 140 is connected to the water inlet pipe 141a and the water outlet pipe 141b so that the fluid is supplied from the outside through the water inlet pipe 141a and the heated fluid can be discharged through the water outlet pipe 141b.

In addition, the water inlet pipe 141a is located in the upper direction relative to the water outlet pipe 141b, so that the heated fluid can be advanced from the upper side.

The metal plate 150 is connected to the fluid pipe 140 so as to share the current flowing through the fluid pipe 140 and thus to form a plurality of closed circuits together with the metal plate 150. In the case where the fluid pipe 140 and the metal plate 150 constitute a plurality of closed circuits, the heating efficiency for heating the fluid can be further increased.

The metal plate 150 may be integrally formed with the fluid pipe 140 through the fluid pipe 140 and may be energized with each other, for example. When the metal plate 150 penetrates the fluid tube 140 and is formed integrally with the fluid tube 140, the coupling force with the fluid tube 140 is maintained so as not to rupture even if a flow occurs in the fluid tube 140 in the alternating magnetic flux . Therefore, there is an advantage that the life of the transformer 100 can be prevented from being shortened.

Further, the induced magnetic field generated by the primary coil 130 is prevented from being dispersed to the backside, and the heating of the fluid by the alternating magnetic flux is improved.

The metal plate 150 is disposed perpendicular to the base 110 and connected to the upper connecting plate by the bracket 151. At this time, the bracket 151 may be a conductor through which electric power passes.

The induction pipe 123 and the metal plate 150 are elastically supported by the elastic means 153 disposed at the lower end. Since the fluid tube 140 serving as the secondary coil generates vibrations, it causes vibrations of the transformer 100 and noise, so that vibrations are absorbed by the elastic means 153 and vibration and noise of the transformer 100 are absorbed Can be minimized.

Further, the elastic means 153 can be disposed at the lower end of the bracket 151 to support the bracket 151. The elastic means 153 absorbs the vibration of the bracket 151, thereby minimizing the vibration and noise of the transformer 100.

The transformer 100 may further include a control sensor 155 disposed on the metal plate 150 to measure the temperature of the metal plate 150. [ The control sensor 155 is connected to the terminal 122 to shut off the applied voltage when the temperature of the metal plate 150 exceeds a predetermined value to prevent the temperature from exceeding a predetermined value, .

The transformer 100 may further include a heating cylinder (not shown) disposed between the water inlet pipe 141a and the metal plate 150 and between the water outlet pipe 141b and the metal plate 150. The heating cylinder (not shown) can store the fluid inside and absorb heat from the metal plate 150 connected to the fluid pipe 140 to transfer heat to the internal fluid, thereby cooling the fluid.

5 is a cross-sectional view of a fluid tube according to another embodiment of the present invention.

5, a transformer 100 according to another embodiment may further include a permanent magnet 160 disposed between the core 120 and the primary coil 130 to increase the strength of the alternating magnetic flux . At this time, the permanent magnet 160 is arranged so as to have the same polarity as the magnetic flux induced in the core 120.

For example, when the upper portion of the core 120 disposed at both ends is arranged to have the N pole and the upper portion of the core 120 disposed at the middle has the S pole, the permanent magnet 160 may have the same polarity as the core 120 An upper portion of the permanent magnet 160 disposed at both ends is disposed to have an N pole and an upper portion of the middle permanent magnet 160 disposed to have an S pole.

The permanent magnet 160 may be a rod magnet to which a plurality of magnets are coupled and is disposed so as to surround the core 120 along the outer circumferential surface of the core 120 perpendicularly to the base 110. The outer circumferential surface of the permanent magnet 160 And a magnetic shielding member 160a surrounding the permanent magnet 160 to prevent electrical connection between the permanent magnet 160 and the primary coil 130. [

The permanent magnet 160 is disposed between the core 120 and the primary coil 130, and a plurality of the permanent magnets 160 may be disposed to cover the core 120.

The plurality of permanent magnets 160 surrounding the core 120 may be arranged to have different polarities from the adjacent permanent magnets 160.

Figures 6 and 7 are front views of a transformer in accordance with another embodiment of the present invention.

Referring to FIGS. 6 and 7, the fluid tube 140 may be disposed to surround two or more vertical cores 120, respectively. That is, it is possible to adjust the induced voltage by changing the winding ratio of the fluid tube 140, which serves as the secondary coil.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined by the appended claims. There will be. Accordingly, the true scope of protection of the present invention should be determined only by the appended claims.

100: transformer, 110: base,
120: core, 121: fixed plate,
123: induction tube, 130: primary coil,
140: fluid tube, 150: metal plate,
151: Bracket, 160: Permanent magnet

Claims (3)

Base;
A plurality of cores spaced apart from each other on the base;
A primary coil wound around the core so that portions adjacent to each other of the plurality of cores have different magnetic poles when a voltage is applied, and receiving a three-phase voltage;
A fluid tube which is bent so as to surround the primary coil and heats the fluid passing through the primary coil through the induction current; And
And a metal plate disposed on the back surface of the primary coil and electrically connected to the fluid pipe through the fluid pipe,
Wherein the fluid tube and the metal plate are integrally formed and energized with each other.
The method of claim 1,
The fluid tube includes:
A transformer that surrounds the primary coil such that a portion is disposed adjacent the N pole of the core and the other portion is disposed adjacent to the S pole of the core.
The method according to claim 1,
Further comprising a permanent magnet disposed between each of the cores and the primary coil for increasing the intensity of an induced current flowing in the fluid tube,
Wherein the permanent magnet is arranged to have the same magnetic pole as the magnetic pole of the adjacent core.

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