KR101077897B1 - High voltage transformer - Google Patents

Abstract

The present invention discloses a high voltage transformer for placing the ground voltage in the middle region of the high voltage converter so that it can be miniaturized.
The present invention provides a high voltage transformer in which high voltage converters are formed on magnetic cores facing each other, wherein at least one of the high voltage converters is increased from one of both ends such that the ground voltage is located in an intermediate region between both ends, Each of the high voltage converters facing each other is configured to have a potential difference with each other, thereby miniaturizing the product.

Description

HIGH VOLTAGE TRANSFORMER

The present invention relates to a high voltage transformer, and more particularly, to a high voltage transformer for miniaturization by forming a ground voltage in the middle region of the high voltage converter.

In general, the high voltage transformer includes a magnetic core, a high voltage converter having a low voltage bobbin surrounding the magnetic core and a high voltage bobbin, a rectifying board for rectifying the high voltage induced in the high voltage bobbin and smoothing the rectified voltage. One important consideration in the fabrication of high voltage transformers is the electrical isolation between the components.

One common method of electrical isolation is to fill an insulating material in a housing to insulate the various components of a high voltage transformer from one another. As the insulating material, gaseous insulating materials such as air, oxygen, nitrogen, hydrogen, and the like, and liquid insulating materials such as petroleum insulating oil, silicon oil, chlorinated oil, and the like are used. Another common electrical insulation method is to insulate by inserting an insulator such as plastic, glass, resin, etc. between the various components.

In this conventional insulating method, even if the insulating liquid is filled into the housing or inserted into the insulator to insulate the components, the components must be separated from each other by a predetermined distance. The separation distance of each component depends on the magnitude of the voltage applied to each of the components and must maintain a constant separation distance according to the magnitude of the voltage applied. Therefore, there is a limit to miniaturization of the high voltage transformer.

In order to solve this problem, "high voltage transformer (registration number 10-0688608)" filed on October 24, 2006 by POSCOM Co., Ltd., a ground voltage is formed at the first stage of the first group and the first stage of the second group, Each stage is characterized by being located opposite to each other. However, the high voltage transformer having such a structure has a limitation in forming a small potential difference between the first group and the second group because the ground voltages are located opposite to each other, and thus, the insulation performance is deteriorated. In addition, in order to prevent such deterioration of the insulation performance, the distance between the first group and the second group must be located far, so there is a limit in miniaturization, and in some cases, there is a problem that an additional insulating film needs to be provided.

An object of the present invention devised in view of the above point is to provide a high voltage transformer to improve the safety while miniaturizing the high voltage transformer.

Still another object of the present invention is to provide a small potential difference between the high voltage converters by placing the ground voltage in an intermediate region, thereby providing a miniaturized high voltage transformer.

It is still another object of the present invention to provide a high voltage transformer which can be miniaturized by locating the ground voltage in an intermediate region and can be constituted by one rectifier.

In the high voltage transformer for achieving the object of the present invention as described above, each of the high voltage transformer is formed on the magnetic core which is located facing each other, at least one of the high voltage transformer is a ground voltage in the middle region between the two ends Each of the high voltage converters, which are increased from either end to be positioned, and which face each other, is arranged to have a potential difference with each other.

Further, more preferably, the high voltage converter includes a first high voltage converter that increases positively toward one end and negatively decreases toward the other end based on the ground voltage formed in the intermediate region.

Further, more preferably, the high voltage converter increases positively toward one end in the same direction as one end direction of the first high voltage converter based on the ground voltage formed in the intermediate region, and toward the other end. A second high voltage converter which is negatively reduced is further included.

Further, more preferably, the ground voltages are shifted by a predetermined interval such that the first high voltage converter and the second high voltage converter are equipotential to each other in the same section.

Further, more preferably, the high voltage converter is negatively reduced toward one end in the same direction as one end direction of the first high voltage converter based on the ground voltage formed in the intermediate region, and toward the other end. The second high voltage conversion unit is further included.

Also, more preferably, the high voltage converter may include a plurality of bobbins in which secondary coils are wound; And an insulating member fitted between the bobbin and the bobbin.

Further, more preferably, the potential difference between one end and the other end of the first bobbin is equal to the potential difference between the first bobbin and the neighboring second bobbin.

Further, more preferably, the spacing between the bobbin is shorter than the spacing from one end of each bobbin to the other end.

Further preferably, each of the high voltage converters is connected to one rectifier.

In addition, more preferably, the rectifying unit, each of the plurality of diodes for rectifying the high voltage induced in the high voltage conversion unit; And a smoothing capacitor for smoothing the rectified high voltage.

In addition, more preferably, the rectifier is positioned at a distance from one side of the high voltage converter.

As described above, in the high voltage transformer according to the present invention, the potential difference can be made small by placing the ground voltage in the intermediate region, thereby achieving miniaturization.

Since it is possible to configure and operate a single rectifier, it is possible to miniaturize and reduce manufacturing costs.

Sufficient insulation can be maintained even without a separate insulating film between the high voltage converters.

1 is a cross-sectional view showing a high voltage transformer as a first preferred embodiment of the present invention;
FIG. 2 is a cross-sectional view of a portion “AA” shown in FIG. 1;
FIG. 3 is a cross-sectional view of the "BB" portion shown in FIG. 3 in cross section;
4 is a cross-sectional view showing a high voltage transformer as a second preferred embodiment of the present invention;
5 is a cross-sectional view showing a high voltage transformer as a third preferred embodiment of the present invention.

Hereinafter, a high voltage transformer, which is a preferred embodiment of the present invention, will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing a high voltage transformer as a first preferred embodiment of the present invention, FIG. 2 is a cross-sectional view showing a portion “AA” shown in FIG. 1, and FIG. 3 is a “BB” shown in FIG. 3. As a cross-sectional view of the part, as shown, a high voltage transformer, which is a first preferred embodiment of the present invention, includes a single rectifying part 30 installed inside the housing 1 having an insulating part 1a formed therein. Two pairs of magnetic cores 10, high voltage converter 20, high voltage switch (41, 42), resistor splitter (51, 52) and the like structure is provided. The insulating portion 1a formed on the inner surface of the housing 1 may be made of any of glass, fiber, resin, and rubber.

The magnetic core 10 includes a first magnetic core 11 and a second magnetic core 12 parallel to each other.

The high voltage converter 20 includes a first high voltage part 21 and a second high voltage part 22 formed on the first magnetic core 11 and the second magnetic core 12.

In the first high voltage converter 21, the ground voltage 21a is positioned in the intermediate region. In addition, the voltage increases positively toward one end and negatively decreases toward the other end based on the ground voltage 21a. For example, as shown in FIG. 3, the first high voltage unit 21 decreases from one end to 80 kV, 60 kV, 40 kV, 20 kV, 0, -20 kV, -40 kV, and -60 kV. At this time, it is preferable to decrease linearly.

Similarly, the second high voltage converter 22 is preferably arranged in parallel with the first high voltage converter 21, and the ground voltage 22a is positioned in the intermediate region. In addition, the voltage increases positively toward one end and negatively decreases toward the other end based on the ground voltage 22a. For example, as shown in FIG. 3, the voltage decreases from one end to 60 kV, 40 kV, 20 kV, 0, -20 kV, -40 kV, -60 kV, and -80 kV. At this time, it is preferable to decrease linearly. The ground voltages 21a and 22a of the first high voltage converter 21 and the second high voltage converter 22 are offset by a predetermined interval. As shown in FIG. 3, since the ground voltages 21a and 22a are offset by a predetermined interval, the first high voltage converter 21 and the second high voltage converter 22 on the same line maintain a potential difference of 20 kV. will be.

Similarly, although not shown, the second high voltage converter 22 may be formed in a structure in which the ground voltage 22a is moved to one end and supports a voltage which is positively increased toward the other end. In addition, the ground voltage 22a of the first high voltage converter 21 is formed to be spaced apart from one end thereof and moved to be offset by a predetermined interval with respect to the ground voltage 22a of the second high voltage converter 22. The potential difference between the first high voltage converter 21 and the second high voltage converter 22 on the line may be 20 kV. That is, the present invention includes a structure in which the ground voltage 22a is located in the intermediate region in any one of the first high voltage converter 21 and the second high voltage converter 22.

In addition, in contrast to the voltage support structure of the second high voltage converter 22 illustrated in FIG. 3, the second high voltage converter 22 is negatively directed toward one end based on the ground voltage 22a formed in the intermediate region. It may be configured to reduce and support a voltage that increases positively toward the other end.

As shown in FIG. 3, the primary coil is wound around the magnetic core 10 in a square shape, and the first and second high voltage converters 21 and 22 are wrapped in the wound primary coil. The first and second high voltage converters 21 and 22 are wound around secondary coils in a high voltage coil section separated from each other by a plurality of bobbins 61, 62, 63, and 64. In this case, as shown in FIG. 3, the respective ground voltages 21a and 22a are positioned in the intermediate region. And between the bobbin (61, 62, 63, 64) and the outermost end portion is further included an insulating member 70. It is also possible to configure the structure between the bobbins (61, 62, 63, 64) at intervals such that insulation is maintained, but as shown, an insulating member (70) is provided between the bobbins and at the outermost end. It is desirable to shorten the distance between each bobbin so that the product can be made smaller.

In addition, as shown in FIG. 3, the potential difference between the one end and the other end of each bobbin 61, 62, 63, 64 is maintained at 20 kV, and the bobbins 62, 63, which are adjacent to the bobbins 61, 62, 63, are maintained. The potential difference between 64 is also configured to maintain 20 kV.

The rectifier 30 is formed of one PCB substrate, and the rectifier 30 includes a plurality of diodes for rectifying the high voltage induced by each of the high voltage converters 20 and a smoothing capacitor for smoothing the rectified high voltage. The rectifier 30 is positioned at a distance from one side of each high voltage converter 20. That is, it is preferably located at the upper end side or the lower end side of the high voltage conversion unit 20.

As described above, the high voltage transformer according to the present invention has a structure in which the ground voltage 21a of the first high voltage converter 21, which is at least one of the two high voltage converters 20, is located in the middle region, and the potential difference is about 20 kV. It is possible to reduce, thereby miniaturizing the product. In addition, since the ground voltages 21a and 22a are zigzag-shifted in the middle region, a voltage of 20 kV is generated in each magnetic core, and the high voltage is increased by the high voltage converters 21 and 22 wrapped in the magnetic core. Is generated.

Similarly, the high voltage transformer according to the second preferred embodiment of the present invention supports a voltage in which the second high voltage converter 22 decreases negatively toward one end and increases positively toward the other end as shown in FIG. 4. do. For example, as shown in FIG. 4, the first high voltage unit 21 increases from one end to −80 kV, −60 kV, −40 kV, −20 kV, 0, 20 kV, 40 kV, and 60 kV. At this time, it is preferable to decrease linearly. In addition, the ground voltage 22a of the second high voltage converter 22 is formed on the same line as the ground voltage 21a of the first high voltage converter 21, and is not configured to match the same line. May be

Other configurations and operations not described are the same as in the first preferred embodiment of the present invention.

Similarly, in the high voltage transformer according to the third embodiment of the present invention, as shown in FIG. 5, one of the first high voltage converter 21 and the second high voltage converter 22 has a ground voltage at one end and the other It is located in the middle area. As illustrated in FIG. 5, a structure in which the ground voltage 22a of the second high voltage converter 22 is positioned at one end of the first high voltage converter 21 and the second high voltage converter 22 will be described as an example. Is as follows.

The second high voltage converter 22 has a structure in which the ground voltage 22a moves to one end and is positioned to support a voltage which is negatively reduced toward the other end. In addition, the ground voltage 22a of the first high voltage converter 21 is formed to be spaced apart from one end thereof and moved to be offset by a predetermined interval with respect to the ground voltage 22a of the second high voltage converter 22. The potential difference between the first high voltage converter 21 and the second high voltage converter 22 on the line may be 20 kV. At this time, the second high voltage converter 22 is formed in a structure that supports a positively increasing voltage toward the other end, and the first high voltage converter 21 is also on the same line as the second high voltage converter 22. It may be formed into a structure that supports the voltage so that the position is maintained at 20 kV. The potential difference is not limited to 20 kV here.

Other configurations and operations not described are the same as in the first preferred embodiment of the present invention.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

1 housing 1a insulation
10: magnetic core 11: the first magnetic core
12: second magnetic core 20: high voltage conversion unit
21: first high voltage converter 22: second high voltage converter
30: rectifier 41, 42: high voltage switch
61, 62, 63, 64: bobbin 70: insulation member

Claims (10)

In the high voltage transformer in which the high voltage converters are formed in the magnetic cores facing each other,
At least one of the high voltage converter is increased from either end of the two ends so that the ground voltage is located in the middle region between the two ends,
High voltage transformers facing each other are arranged to have a potential difference with each other. The method of claim 1, wherein the high voltage conversion unit
A high voltage transformer, comprising: a first high voltage converter configured to increase positively toward one end and negatively decrease toward the other end based on a ground voltage formed in an intermediate region. The method of claim 2, wherein the high voltage conversion unit
Based on the ground voltage formed in the intermediate region, the second high voltage converter further increases positively toward one end, which is the same direction as one end direction of the first high voltage converter, and decreases negatively toward the other end. High voltage transformer characterized in that. 4. The high voltage transformer of claim 3, wherein each of the ground voltages is offset by a predetermined interval such that the first high voltage converter and the second high voltage converter are equipotential to each other in the same section. The method of claim 2, wherein the high voltage conversion unit
Based on the ground voltage formed in the intermediate region, the second high voltage converter further decreases negatively toward one end in the same direction as one end direction of the first high voltage converter and increases positively toward the other end. High voltage transformer characterized in that. The high voltage converter of any one of claims 1 to 5, wherein
A plurality of bobbins to which secondary coils are wound; And
And an insulation member fitted between the bobbin and the bobbin. The method of claim 6,
And a potential difference between one end of the first bobbin and the other end of the bobbin is equal to the potential difference between the first bobbin and a neighboring second bobbin. 8. The high voltage transformer according to claim 7, wherein an interval between the bobbins is shorter than an interval from one end to the other end of each bobbin. 6. The high voltage transformer according to any one of claims 1 to 5, wherein each said high voltage converter is connected to one rectifier. The method of claim 9, wherein the rectifying unit,
A plurality of diodes respectively rectifying the high voltage induced by the high voltage converter; And
And a smoothing capacitor for smoothing the rectified high voltage.

Images