KR101719308B1 - Power rectifier having superior heat removal performance - Google Patents

Abstract

The present invention relates to a heat dissipating member of a rectifier. The present invention relates to a heat exchanger comprising: a first heat dissipation unit connected to a rectifying element of a power converter to radiate heat, the first heat dissipation unit having a uniform cross-sectional shape, a first heat dissipation unit spaced apart from the first heat dissipation unit, And a connecting portion connecting the first heat-radiating portion and the second heat-radiating portion, wherein the first heat-radiating portion and the second heat-radiating portion have at least a first heat-insulating portion and a second heat- And a heat dissipating protrusion protruding from both sides of the main body of the heat radiating member.

Description

POWER RECTIFIER HAVING SUPERIOR HEAT REMOVAL PERFORMANCE < RTI ID = 0.0 >

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat dissipating member of a rectifier and a power converter including the same, and more particularly, to a heat dissipating member and a power converter capable of raising the heat radiation effect of a rectifier, .

In general, electric power converters are used in basic industries as power supply devices for electroplating facilities, water purification facilities, and wastewater treatment facilities using electrochemical methods.

Such a power converter generally comprises a transformer for converting voltage and a rectifier for converting alternating current to direct current. In particular, a rectifier uses a large number of rectifying semiconductor elements, which generate a lot of heat.

Therefore, solving the heat dissipation problem is one of the important points in the rectifier. If the heat generated during operation of the rectifier is not removed, the performance of the rectifier may be deteriorated, and the rectifier may be damaged, resulting in failure of the rectifier.

An example of one of the heat dissipating members of the conventional rectifier is disclosed in Korean Patent Laid-Open No. 10-2003-0001049. The conventional heat dissipating member has a substantially rectangular shape and is configured to couple the rectifying element and the output bus bar to a flat surface of the letter J shape and to couple the two heat dissipating members so that the flat surface faces each other .

However, since the heat radiation member of this type is located between the heat radiation members, it is difficult to adhere the heat radiation member to the heat radiation member and the output busbar is attached to the same surface as the rectification member, so space for mounting the rectification member is reduced and the space is wasted It causes the heat to concentrate.

Korean Patent Publication No. 10-2003-0001049 (2003.01.06)

The present invention proposes a heat dissipating member of a rectifier and a power converter including the same, which are capable of easily mounting a rectifying element and capable of uniformly arranging a plurality of rectifying elements so as to enhance the heat radiation effect and improve the quality of the output current.

Other objects and advantages of the present invention will become apparent to those skilled in the art from the following detailed description.

According to an aspect of the present invention, there is provided a power converter comprising: a first heat dissipating unit connected to a rectifying element of a power converter to discharge heat, the first heat dissipating unit having a constant cross- And a connection part connecting the first heat dissipation part and the second heat dissipation part, wherein the first heat dissipation part and the second heat dissipation part are arranged in the same direction as the first heat dissipation part, And a heat dissipating protrusion protruding from both sides of the main body of the heat sink.

Here, the first heat-radiating portion and the second heat-radiating portion may extend parallel to each other.

The heat dissipating protrusions may include a first heat dissipating protrusion protruding from the first heat dissipating unit and the second heat dissipating unit at regular intervals in a direction opposite to the direction in which the first heat dissipating unit and the second heat dissipating unit face each other, And a second heat dissipating protrusion protruding from the one end of the heat sink body in a direction opposite to the connection portion with a predetermined gap.

According to another aspect of the present invention, there is provided a rectifier including a transformer for converting an input voltage and outputting the rectified voltage, and a rectifier for converting an AC output from the transformer into a DC current, A plurality of rectifying elements attached to the connecting portion of the heat radiating member and converting an alternating current output from the transformer into a direct current, And an output bus bar connected to the output terminal and outputting a direct current converted from the rectifier element.

Here, the heat radiation members may be arranged to face each other in two rows, and the output bus bar may be coupled to the bending end of the heat radiation members facing each other.

According to the embodiment of the present invention, it is possible to separate the output bus bar and the seat to which the rectifier is attached, so that the rectifier element can be easily attached and the plurality of rectifier elements can be arranged evenly. And the quality of the output current can be increased.

The effects of the present invention will be clearly understood and understood by those skilled in the art, either through the specific details described below, or during the course of practicing the present invention.

1 is a perspective view of a heat dissipating member according to an embodiment of the present invention;
2 is a plan view of the heat dissipating member of Fig.
3 is a perspective view of a power converter employing a heat dissipating member according to the embodiment shown in Fig.
4 is a plan view showing the rectifier portion of the power converter shown in Fig.
FIG. 5 is a perspective view showing a state in which a rectifying element and an output bus bar are coupled to a heat dissipating member employed in the embodiment shown in FIG. 1; FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, It will be possible. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Hereinafter, a heat dissipating member according to an embodiment of the present invention and a power conversion apparatus having the same will be described in detail with reference to the drawings. In the present specification, the same reference numerals are assigned to the same components in different embodiments, and the description thereof is replaced with the first explanation.

The heat dissipating member 10 according to the embodiment of the present invention is a member for emitting heat by being connected to a rectifying element installed in a power converter and includes a first heat dissipating unit 1, a second heat dissipating unit 2, 3).

In the heat dissipating member 10 according to the embodiment of the present invention, the first heat dissipating unit 1 has a constant cross-sectional shape. On the other hand, the second heat-radiating portion 2 also has a constant cross-sectional shape and extends opposite to the first heat-radiating portion 1. [ The connecting portion 3 is formed to connect the first heat radiating portion 1 and the second heat radiating portion 2 in between.

On the other hand, in the heat dissipating member 10, the first heat dissipating unit 1 and the second heat dissipating unit 2 include the kitchen heat bodies 11 and 21, the bent ends 12 and 22, and the heat dissipating protrusions 13 and 23 do. The heaters 11 and 21 are formed in a relatively large width, and most heat is dissipated. One or both of the kitchen heat bodies 11 and 21 are bent to form bent ends 12 and 22. In addition, the heat dissipating protrusions 13 and 23 protrude from both sides of the kitchen heat bodies 11 and 21.

The heat dissipating member 10 thus formed is a place where the connecting portion 3 attaches the rectifying element 20 and it is easy to attach the rectifying element 20 to the heat dissipating member 10. [ In addition, since the bent ends 12 and 22 can be places for attaching the output bus bar 30, it is easy to attach the output bus bar 30 without interference with the rectifier device 20. [

Since the rectifier device 20 and the output bus bar 30 are separately formed, the plurality of rectifier devices 20 can be arranged evenly. Since the output part and the rectifying part are made two-dimensionally, So that the quality of the current can be increased.

Hereinafter, the configuration of each part will be described in detail with reference to the drawings.

FIG. 1 is a perspective view of a heat dissipating member according to an embodiment of the present invention, and FIG. 2 is a plan view of a heat dissipating member of FIG. 1. FIG.

The first heat-radiating portion (1) constitutes one side skeleton of the heat-radiating member (10). In the present embodiment, the cross section of the first heat dissipation unit 1 has a flat shape with a constant width and extends in the vertical direction when viewed in the drawing.

On the other hand, the second heat dissipating unit 2 constitutes a skeleton of the other side of the heat dissipating member 10, like the first heat dissipating unit 1. In the present embodiment, the cross section of the second heat dissipation unit 2 has a straight shape with a constant width and has the same shape as the first heat dissipation unit 1. [

Referring to FIG. 1, the first heat dissipating unit 1 and the second heat dissipating unit 2 extend in parallel with each other, and approximately one third from one end thereof are connected by the connecting unit 3. Thus, the cross section of the heat dissipating member 10 is substantially H-shaped.

The connection portion 3 is formed in a straight shape and the heat dissipating protrusions 13 and 23 are not formed. The connection portion 3 can be used as a place where the rectifier element 20 is coupled. A part of the main heat collecting body 11 of the first heat radiating part 1 and a part of the main heat collecting body 21 of the connecting part 3 and the second heat radiating part 2 are formed to be depressed from one end of the heat generating body, The rectifier element 20 may be coupled to the rectifying element 20. In terms of heat transfer, the connection part is advantageous to be in complete contact with the rectifying element, so that it can be smoothly processed by milling.

The first heat dissipation unit 1, the second heat dissipation unit 2, and the connection unit 3 may be formed of an aluminum material having excellent heat transfer performance. Also, the first heat-radiating portion 1, the second heat-radiating portion 2 and the connecting portion 3 may be integrally formed by practically extrusion molding.

Bending ends 12 and 22 are formed at both ends of the first and the second heat dissipating units 1 and 2. The bent ends 12 and 22 are bent so as to be perpendicular to the vertical heat bodies 11 and 21. The bent ends of the first and second heat dissipating units 1 and 2 are bent in directions away from each other.

The output bus bar 30 can be mounted on one end of the bending stages 12 and 22 and the other end can be attached to an attachment panel inside the power converter 100 or to connect the plurality of heat dissipating members 10 to the other end A connecting member can be attached.

By using the heat dissipating member 10 according to the present embodiment, the rectifier 20 and the output bus bar 30 can be arranged without interference with each other. The number of the rectifying elements 20 arranged on the upper side with respect to the output bus bar 30 and the arrangement of the rectifying elements 20 by the output busbar 30 and the number of the rectifying elements 20 arranged on the lower side, Thereby preventing an uneven current from flowing.

Further, it is also possible to easily attach the heat dissipating member 10 to the bent ends 12 and 22 where the output bus bar 30 is not coupled, thereby improving the heat dissipating function.

On the other hand, the heat dissipating protrusions (13, 23) are formed in the first heat dissipating portion (1) and the second heat dissipating portion (2). The heat dissipating protrusions 13 and 23 are spaced apart from the first heat dissipating protrusions 13a and 23a protruding at regular intervals in the outer direction of the kitchen heat bodies 11 and 21 and in the inner direction of the kitchen heat bodies 11 and 21 And protruding second radiating protrusions 13b and 23b. The second heat dissipating protrusions 13b and 23b are formed so as to extend from one end of the heat generating bodies 11 and 21 to the connection portion 3 and not to the other end of the heat generating elements 11 and 21 at the connection portion 3 good.

As described above, the rectifying element 20 can be coupled to the connection part 3. Therefore, the first radiating protrusions 13a and 23a may be formed in all the outer regions of the first radiating portion 1 and the second radiating portion 2. However, in order to prevent the rectifying element 20 and the second radiating protrusions 13b and 23b from interfering with each other, the second radiating protrusions 13b and 23b are formed so as to extend from only one end of the heat generating bodies 11 and 21 to the connecting portion 3 .

The second heat dissipating protrusions 13b and 23b are formed in regions other than the bonding sites of the rectifying elements 20 among the regions where the first heat dissipating portions 1 and the second heat dissipating portions 2 face each other.

When the heat dissipating protrusions are formed as described above, the heat dissipating effect can be enhanced by enlarging the surface area capable of emitting heat. On the other hand, by defining the formation region of the heat dissipation protrusion, it is possible to easily combine the rectifying elements coupled to the connection portion.

Hereinafter, a power converter employing the above-described heat dissipating member will be described in detail with reference to the drawings.

FIG. 3 is a perspective view of a power converter employing a heat dissipating member according to the embodiment shown in FIG. 1, and FIG. 4 is a plan view showing a rectifier portion of the power converter shown in FIG. As shown by a dotted line, a transformer 110 is disposed below the power converter 100 and a rectifier 120 is disposed above the power converter.

A power converter 100 employing a heat dissipating member 10 according to an embodiment of the present invention includes a transformer 110 and a rectifier 120. [ The transformer 110 includes a transformer, an electric circuit, and the like which are elements of a general transformer 110 as a part for converting and outputting an input voltage. The rectifier 120 includes the heat dissipation member 10, the rectifier device 20, and the output bus bar 30 as a part for converting the alternating current output from the transformer 110 into a direct current.

A plurality of the above-described heat dissipating members 10 are attached to the rectifier 120. Referring to FIG. 4, seven heat dissipating members 10 are arranged on the upper and lower sides so as to extend in a manner that the folding ends 12 and 22 are in contact with each other.

The ends of the bent ends 12 and 22 of the second heat radiating portion 2 of one radiating member 10 are connected to the bent ends 12 of the first radiating portion 1 of the adjacent other radiating member 10 And 22, respectively. The heat dissipating members 10 thus arranged are arranged in two rows in parallel with each other.

The heat radiating members 10 arranged in parallel to each other in the drawing are arranged such that the directions in which the second heat radiating projections 13b and 23b are formed face each other. On the other hand, the output bus bars 30 are coupled to the bent ends 12 and 22 of the heat dissipating members 10 arranged in parallel to each other. The output bus bar 30 extends outside the power converter 100.

The output bus bar 30 may be formed as a straight portion of a copper material extending with a constant width as a portion for outputting a direct current converted from the rectifier element 20. [

The output bus bar 30 is preferably disposed at the folding ends 12 and 22 facing each other as described above. When the output bus bar 30 is disposed as described above, the output terminal can be positioned at the central portion of the power converter 100, and it is easy to take out the power converter 100 without any interference. On the other hand, a fan is installed in the lower part of the heat dissipating member 10 to generate heat to promote heat emission.

Fig. 5 is a perspective view showing a state in which the heat dissipating member employed in the embodiment shown in Fig. 1 is combined with the rectifier and the bus bar. Fig.

As shown in the drawing, a plurality of holes are vertically formed in the connection portion 3 of the heat dissipating member 10, and the rectifying element 20 is coupled to the holes. A thread is formed in the hole and a screw thread is formed also in the rectifier element 20 so that the rectifier element 20 can be coupled to the hole.

The rectifier 20 converts the alternating current output from the transformer 110 into a direct current. As the rectifying element 20, a diode of the type used as the industrial rectifying element 20 can be used.

In this embodiment, seven rectifier elements 20 are vertically coupled. If the rectifier device 20 and the output busbar 30 are mounted on the same surface as the conventional heat dissipation member 10, the space to which the rectifier device 20 is attached is reduced due to the attachment of the busbar.

The number of the rectifying elements 20 determines the capacity of the rectifier 120 so that it is necessary that the heat dissipating member 10 is longer in order to make the rectifier 120 of the same capacity when the conventional radiating member 10 is used . That is, the same number of rectifying elements 20 can be attached by using the longer heat radiating member 10. This causes the rectifier 120 to be enlarged. Therefore, when the heat dissipating member 10 according to the embodiment of the present invention is used, the rectifier 120 having the same capacity and relatively small size can be manufactured.

Further, in the case of the conventional heat dissipating member, since the output bus bar 30 and the rectifier device 20 are attached to the same surface, the number of the rectifying devices 20 disposed on the upper and lower sides with respect to the output bus bar 30 varies Occurs.

Specifically, when the same number of rectifying elements 20 are arranged above and below the output bus bar 30, the number of rectifying elements 20 that can be disposed can be reduced. In order to avoid this, the number of rectifying elements 20 is maximized The number of the rectifying elements 20 disposed above and below the output bus bar 30 can be different from each other.

In other words, referring to the drawings, the number of rectifying elements 20 that can be disposed in the heat dissipating member 10 is seven, and the width of the output bus bar 30 corresponds to the length of three arrangement spaces of the rectifier element 20, When the heat radiating member is used, two rectifying elements can be arranged on the upper and lower sides with respect to the output bus bar 30, respectively.

However, in case of using a heat dissipating member having a length that can arrange six rectifying elements with different specifications of the rectifier, one rectifying element should be arranged on the upper and lower sides or one rectifying element should be arranged on the upper and lower sides, or two or two rectifying elements should be arranged on the upper and lower sides do.

If the rectifying elements are arranged asymmetrically, the output of the power converter becomes uneven. Since the arrangement space of the rectifying elements and the arrangement space of the output bus bars are different from each other in the heat radiating member according to the embodiment of the present invention, the output bus bar can always be arranged at the center position of the entire rectifying elements and accordingly the output uniformity can be increased.

Further, since the contact portion of the heat radiating member and the rectifying element and the contact portion of the heat radiating member and the output bus bar in which heat generation mainly occurs are different from each other, the heat generating portion is biased and the heat radiating effect can be enhanced.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1: first heat radiating part 11: kitchen heat conductor 12: folded end 13:
13a: first radiating protrusion 13b: second radiating protrusion
2: second heat dissipating unit 21: kitchen heat sink 22: bent end 23: heat dissipating protrusion
23a: first radiating protrusion 23b: second radiating protrusion
3: Connection
10: heat radiating member 20: rectifying member 30: output bus bar
100: power converter 110: transformer 120: rectifier

Claims (5)

A transformer for converting and outputting an input voltage and a rectifier for converting an AC output from the transformer into a DC,
The rectifier includes:
A heat dissipating member in which a plurality of heat dissipating members are disposed,
A plurality of rectifying elements attached to the connecting portion of the heat dissipating member and converting an alternating current output from the transformer into a direct current;
And an output bus bar coupled to a bent end of the heat dissipating member and outputting a direct current converted by the rectifying element,
The heat-
A first heat radiation portion extending in a shape having a constant cross section, a second heat radiation portion disposed apart from the first heat radiation portion and extending in the same direction as the first heat radiation portion, and a second heat radiation portion extending from the first heat radiation portion and the second heat radiation portion And a connecting portion for connecting the connecting portion,
The first heat-radiating portion and the second heat-radiating portion may include a main body, a bent end formed by bending at least one end of the main body, and a heat dissipating protrusion protruding from both sides of the main body, ,
Wherein the heat dissipating protrusion includes a first heat dissipating protrusion protruding at a predetermined interval in a direction opposite to the direction in which the first heat dissipating part and the second heat dissipating part face each other and a first heat dissipating part and a second heat dissipating part, And a second heat dissipating protrusion protruding from the one end of the main body in a viewing direction at a predetermined interval from the one end of the main body,
The rectifying element is formed by a part of the heat sink of the first heat radiating part in which the second heat radiating protrusion is not formed and a part of the heat sink of the second heat radiating part in which the connecting part and the second heat radiating protrusion are not formed, And is connected to the connecting portion of the connecting portion,
The heat dissipating members are disposed in two rows so that their bent ends face each other, the output bus bars are respectively coupled to the bent ends facing each other, and the rectifying elements are disposed on the opposite side of the output bus bar
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