KR20110115847A - Compact transformer using heat exhaust means - Google Patents

Abstract

The present invention relates to a compact transformer using heat dissipation means, and in particular, the cooling of the coil and iron core is facilitated by using heat dissipation means (heat pipe device) together with contact with external air or the use of insulating oil, and low pressure. The present invention relates to a compact transformer using heat dissipating means which can be manufactured compactly by zeroing the insulation distance of the air medium between the coil and the high pressure coil.
The configuration of the present invention is a transformer formed by winding a low pressure coil and a high pressure coil on an iron core, wherein at least one of the iron core and the low pressure coil, the low pressure coil and the high pressure coil, and at least one of the outer circumferential surfaces of the high pressure coil is formed. A heat discharging means is provided, and one end of the heat discharging means is formed to protrude out of the transformer.

Description

Compact transformer using heat dissipation means {COMPACT TRANSFORMER USING HEAT EXHAUST MEANS}

The present invention relates to a compact transformer using heat dissipation means, and more particularly, a heat dissipation means (heat pipe device) having excellent cooling ability is closely adhered to each other between an iron core and a low pressure coil, between a low pressure coil and a high pressure coil, and an outer circumferential surface of a high pressure coil. The present invention relates to a compact transformer using heat dissipating means, which can be manufactured compactly by integrally manufacturing the low pressure coil and the high pressure coil together with the heat discharging means without the insulation distance of the air medium.

In general, a transformer as a stationary induction apparatus includes an inlet transformer using insulating paper and insulating oil for insulation and cooling, and a mold transformer using epoxy resin and an air medium.

These transformers are designed, manufactured and used within the required temperature rise.

In a general mold transformer, the air circulation passage is secured to ensure that the air for circulating the insulation and cooling between the iron core and the low pressure coil and the low pressure coil and the high pressure coil can be circulated.

Then, the low pressure coil and the high pressure coil are individually wound (wound) by using an insulator and a conductor in order to manufacture each coil, and then each epoxy is manufactured by filling epoxy by vacuum casting method, and each of the cores The coil is assembled by maintaining the spatial distance of the air circulation passage mentioned above.

In the general inlet transformer, the low pressure coil is wound by using insulating paper and a conductor, and then the high pressure coil is wound by insulating paper and a conductor in order to manufacture a high pressure coil thereon.

In order to design and manufacture within the required temperature rise range, a passage is made by using an insulating material having a constant thickness so that the insulating oil can flow in order to secure the passage of the insulating oil as a cooling medium between the low pressure coil, the low pressure coil and the high pressure coil, or inside the high pressure coil. give.

Therefore, since the general mold transformer and the inlet transformer require a cooling passage through which the cooling medium can pass in order to design and manufacture the temperature within the required temperature rise range, the size of the completed transformer is increased.

Accordingly, the size of the transformer is increased, and the size of the insulator, conductor, frame, etc. used is enlarged together, resulting in a cost increase, and in order to install such a large transformer, it is necessary to secure a constant installation space. Is being raised.

The present invention has been made to solve the conventional problems as described above, the main object of the present invention is the heat dissipation means (heat) in at least one of the iron core and the low pressure coil, between the low pressure coil and the high pressure coil and the outer peripheral surface of the high pressure coil (heat Pipe device) and compactly manufactured without the insulation distance of the air medium between the low pressure coil and the high pressure coil, as well as the cooling means (circulation fan) in the heat pipe device to efficiently heat the heat generated from the transformer It is an object of the present invention to provide a compact transformer using heat dissipating means that can be discharged.

Still another object of the present invention is to provide a compact transformer using heat dissipation means which can minimize the installation space and reduce installation and manufacturing costs by manufacturing the transformer in a compact size.

In order to achieve the above object, the compact transformer using the heat dissipation means of the present invention is a transformer formed by winding a low pressure coil and a high pressure coil in an iron core, between the iron core and the low pressure coil, between the low pressure coil and the high pressure coil At least one of the heat dissipation means is provided between at least one of the inner and outer circumferential surfaces of the high pressure coil, and one end of the heat dissipation means is achieved by protruding out of the transformer.

At this time, one end of the heat discharging means is characterized in that the heat dissipation unit is further provided.

In addition, the inside of the heat discharging means is formed of a mesh type, sinter type (Sinter Powder Type), groove type (Grooved Type), as a refrigerant ethanol, PFC (perfluorinated compound), distilled water, acetone, ammonia, sodium It is characterized in that one liquid is used.

On the other hand, one end of the heat discharge means is characterized in that the cooling means is further provided.

Further, a winding auxiliary plate for increasing the adhesion between the low pressure coil and the high pressure coil is further provided in the heat discharging means located between the iron core and the low pressure coil, between the low pressure coil and the high pressure coil, and the outer circumferential surface of the high pressure coil. Characterized in that provided.

In addition, the heat discharging means is characterized in that the material is made of at least one of copper, aluminum, Inconel, stainless steel, polymer.

In addition, the low pressure coil and the high pressure coil is characterized in that the integrally manufactured.

In addition, the outer peripheral surface of the heat discharging means except one end protruding to the outside of the transformer is characterized in that the insulator is further filled.

In addition, the heat discharging means is characterized in that any one of a circular, square and plate shape.

According to the present invention described above, a heat discharge means (heat pipe device) is mounted on the outer circumferential surface of the iron core and the low pressure coil, the low pressure coil and the high pressure coil and the high pressure coil, and the air between the low pressure coil and the high pressure coil in the air medium By installing the heat pipe device without the circulation passage and manufacturing it as an integrated product, it not only reduced the size of the transformer, but also made it smaller. Furthermore, by rapidly and smoothly cooling the heat dissipated from the transformer, the temperature rise of the insulation was suppressed to extend the life of the transformer. In addition, by miniaturizing the transformer, the installation space can be reduced, and the installation cost can be reduced.

1 is a view schematically showing a configuration of a conventional mold transformer,
2 is a view schematically showing the internal structure of a fully solid insulated mold transformer according to an embodiment of a compact transformer using heat dissipating means according to the present invention;
3 is a view schematically showing the internal structure of the inlet transformer according to an embodiment of the compact transformer using the heat discharge means according to the present invention,
Figure 4 is a view showing a junction structure of the heat insulating part and the winding auxiliary plate of the heat discharging means according to an embodiment of the compact transformer using the heat discharging means according to the present invention.
5 to 7 is a view showing the internal structure of the heat discharging means according to the embodiment of the compact transformer using the heat discharging means according to the present invention for each mesh type, sintered type, groove type,
8 and 9 are schematic views illustrating the internal structure of a three-phase fully solid insulated mold transformer according to one embodiment of a compact transformer using heat dissipating means according to the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

Prior to describing the present invention, the configuration and shape of the main parts are highlighted in the drawings, and their ratios and shapes may be somewhat different from the actual ones. In the present invention, the structures of the mold transformer and the inlet transformer are somewhat different, but basically, Since the installation structure of the heat dissipation means 100 (heat pipe device) of the present invention installed on the iron core 20, the low pressure coil 30 and the high pressure coil 40 is the same, the structural description of the present invention will be described below. do.

In addition, the heat discharging means 100 is composed of one body, but for convenience, the heat discharging means 100 is illustrated in FIGS. 2, 3, 8, and 9 as described below. To be described by dividing into a heat insulating part 120 and a condensation part 130.

First, the compact transformer using the heat dissipating means of the present invention is a transformer formed by winding the low pressure coil 30 and the high pressure coil 40 on an iron core 20 having a circular or rectangular cross section, the iron core 20 and a low pressure. At least one heat discharging means 100 is provided between at least one of the coils 30, between the low pressure coil 30 and the high pressure coil 40, and an outer circumferential surface of the high pressure coil 40. 8 and 9, it is preferable to install in all three places, and one end of the heat discharging means 100 is formed to protrude out of the transformer 10.

At this time, the heat discharging means 100 located on the outer circumferential surface of the high pressure coil 40 is attached to the outer circumferential surface of the high pressure coil 40 by using an adhesive having an insulating property, etc., but on the outer circumferential surface of the high pressure coil 40. It is preferable to attach as closely as possible.

At this time, the heat dissipating means 100 is a heat insulating part 120 for the heat transfer by evaporating the vaporization unit 110 and the liquid (refrigerant) provided on the outer peripheral surface of the winding auxiliary plate 400 of a material having excellent thermal conductivity and Condensation unit 130 for heat dissipation; consists of.

In particular, a heat dissipation unit 200 such as a heat sink is formed on the outer circumferential surface of the condensation unit 130, and cooling means 300 such as a circulating fan (cooling fan) to enable overload operation. This is further provided.

Therefore, when the temperature inside the transformer 10 rises, the elevated temperature is transferred to the refrigerant inside the vaporization unit 110, and when the temperature of the refrigerant rises, the vaporized refrigerant vaporizes the heat insulating part 120. The refrigerant is transferred to the condensation unit 130, and the transferred refrigerant is cooled by the heat dissipation unit 200 and the cooling means 300, and re-introduced into the vaporization unit 110. While cooling the inside of the transformer 10 efficiently.

On the other hand, the inner circumferential surface of the heat discharging means 100 may be composed of a hollow general cooling pipe without the wick (Wick), as shown in Figures 5 to 7, a wick type mesh type, Sinter type (Sinter Powder Type), grooved type (Grooved Type) and the like is preferably formed, and as a refrigerant, any one liquid of ethanol, PFC (perfluorinated compound), distilled water, acetone, ammonia, sodium.

In addition, the low pressure coil 30 and the high pressure coil 40 is integrally manufactured without the insulation distance of the air medium, the outer peripheral surface of the heat discharging means 100 except for one end protruding to the outside of the transformer 10 It is desirable that the insulation is further filled.

In particular, in the case of the high pressure coil 40 rises to tens of thousands of volts to generate a high temperature, the heat discharge means 100 may be deformed or damaged, so that the heat is attached to the outer peripheral surface of the high pressure coil 40 On the outer circumferential surface of the discharge means 100, it is preferable to prevent this by configuring the insulating material such as insulating paper.

On the other hand, when the winding auxiliary plate 400 is attached to the vaporization unit 110, it is preferable to form an open circuit around the iron core 20 to be installed in a structure that prevents eddy current and short-circuit current.

In addition, the vaporization unit 110, the heat insulation unit 120 and the condensation unit 130 is a non-conductive material that uses a good thermal conductivity copper or aluminum or Inconel material or to block the electrical conduction to reduce eddy current loss Made of stainless steel or polymer material, the heat discharging means 100 is formed in a circular, square or plate type.

On the other hand, the heat dissipation unit 200 is an aluminum material for smooth heat dissipation and not shown to increase the contact area with the outside air, but having a plurality of heat dissipation fin (heat sink) It is preferable to form.

In addition, the cooling means 300, such as a circulation fan, is provided at the upper end of the heat dissipation unit 200 at an upper end of the heat discharging means 100 protruding to the outside of the transformer 10 so as to enable overload operation. It can be installed in the heat dissipation efficiency can be further increased.

On the other hand, Figure 4 shows only a brief portion of the coupling state of the winding auxiliary plate 400 and the heat discharging means 100, the shape of the vaporization unit 110 is any of the circular, square or plate type Since one may be used, the winding auxiliary plate 400 may be installed without increasing the adhesion of the windings of the low pressure coil 30 and the high pressure coil 40, as well as the low pressure coil 30 and the high pressure coil. It is preferable to use in combination with the winding auxiliary plate 400 to increase the adhesion between the 40 and the vaporization unit 110.

The winding auxiliary plate 400 may be made of any one of thermally conductive copper, aluminum, and inconel, or any one of stainless steel or polymer, which is a non-conductive material that blocks electrical conduction in order to reduce eddy current loss. .

In addition, the thickness of the winding auxiliary plate 400 can be produced in various ways depending on the production environment, but preferably produced in 1 ~ 10 mm, the length is the height of the low pressure coil 30 and the high pressure coil 40 Correspondingly manufactured, the shape closely adheres between the iron core 20 and the low pressure coil 30, between the low pressure coil 30 and the high pressure coil 40, or to the outer circumferential surface of the high pressure coil 40. It is desirable to make it as possible.

On the other hand, Figure 8 shows the internal structure of the outer iron type three-phase transformer, Figure 9 shows the internal structure of the iron-type three-phase transformer, the present invention is applied to not only single phase but also multi-phase transformer such as three phase Although it is shown in the drawing that the heat dissipation means 100 positioned separately from each other on the high-pressure coil 40 is shown separately manufactured, but the only one heat dissipation means between the high-pressure coils 40 ( 100 may be manufactured to be in close contact with the outer circumferential surface of the high-pressure coil 40.

While the invention has been shown and described with respect to preferred embodiments thereof, the invention is not limited to the embodiments described above, and is commonly used in the art to which the invention pertains without departing from the spirit of the invention as claimed in the claims. Anyone with a variety of variations will be possible.

10: transformer 20: iron core
30: low pressure coil 40: high pressure coil
50: insulating oil 60: transformer enclosure
100: heat discharge means 110: vaporization unit
120: heat insulation 130: condensation
200: heat dissipation unit 300: cooling means
400: winding auxiliary plate

Claims (9)

In a transformer formed by winding a low pressure coil and a high pressure coil in an iron core,
At least one heat dissipation means is provided between at least one of the iron core and the low pressure coil, between the low pressure coil and the high pressure coil, and an outer circumferential surface of the high pressure coil, and one end of the heat discharging means protrudes out of the transformer. Compact transformer using heat dissipation means.
According to claim 1, At one end of the heat dissipation means,
Compact transformer using heat dissipating means, characterized in that the heat dissipation unit is further provided.
The method of claim 2, wherein the interior of the heat discharging means,
It is formed into a mesh type, sinter powder type, grooved type, and any one liquid of ethanol, PFC (perfluorinated compound), distilled water, acetone, ammonia, and sodium is used as a refrigerant. Compact transformer using heat dissipation means.
According to claim 2, At one end of the heat dissipation means,
Compact transformer using heat dissipating means, characterized in that the cooling means is further provided.
The method according to any one of claims 1 to 4,
The heat dissipation means located between the iron core and the low pressure coil, between the low pressure coil and the high pressure coil, and on the outer circumferential surface of the high pressure coil further includes a winding auxiliary plate for increasing the adhesion between the low pressure coil and the high pressure coil. Compact transformer using heat dissipation means.
The heat dissipation means according to any one of claims 1 to 4,
A compact transformer using heat dissipating means, characterized in that the material is made of at least one of copper, aluminum, inconel, stainless steel, and polymer.
The low pressure coil and the high pressure coil according to any one of claims 1 to 4,
Compact transformer using heat dissipation means, characterized in that it is made in one piece.
According to claim 7, On the outer peripheral surface of the heat dissipating means except one end protruding to the outside of the transformer,
Compact transformer using heat dissipating means, characterized in that the insulator is further filled.
The heat dissipation means according to any one of claims 1 to 4,
Compact transformer using heat dissipating means, characterized in that any one of a circular, square and plate shape.

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