KR101102522B1 - Heat pipe type cooling device - Google Patents

Heat pipe type cooling device Download PDF

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KR101102522B1
KR101102522B1 KR1020080108558A KR20080108558A KR101102522B1 KR 101102522 B1 KR101102522 B1 KR 101102522B1 KR 1020080108558 A KR1020080108558 A KR 1020080108558A KR 20080108558 A KR20080108558 A KR 20080108558A KR 101102522 B1 KR101102522 B1 KR 101102522B1
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South Korea
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cooling
heat exchange
chamber
transformer
heat
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KR1020080108558A
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Korean (ko)
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KR20100049418A (en
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이준엽
함진기
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현대중공업 주식회사
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/10—Liquid cooling
    • H01F27/18—Liquid cooling by evaporating liquids
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
    • H05K7/20336—Heat pipes, e.g. wicks or capillary pumps
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
    • H05K7/20381—Thermal management, e.g. evaporation control

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Transformer Cooling (AREA)

Abstract

본 발명은 변압기용 히트파이프식 냉각장치에 관한 것으로서, 특히 냉각대상유체가 입출력되기 위한 입구와 출구를 갖는 냉각실과; 상기 냉각실 내부에 설치되고, 냉각실 내부를 통과하는 냉각대상유체를 냉각시키면서 증발하여 기화하는 냉매가 순환하는 복수개의 증발관로로 이루어지며, 상기 증발관로가 제 1 연결관로에 의해 응축부로 연결되는 증발부와; 열교환유체가 입출력되기 위한 입구와 출구를 갖는 열교환실과; 상기 열교환실 내부에 설치되고, 기화된 냉매가 통과하면서 열교환실 내부를 통과하는 열교환유체와 열교환하여 응축되는 복수개의 응축관으로 이루어지며, 상기 응축관이 제 2 연결관로에 의해 증발관로에 연결되는 응축부; 로 구성한 것을 특징으로 한다.The present invention relates to a heat pipe type cooling device for a transformer, and in particular, a cooling chamber having an inlet and an outlet for inputting and outputting a cooling object fluid; It is installed in the cooling chamber, and consists of a plurality of evaporation tube circulating the refrigerant to evaporate by evaporating while cooling the cooling target fluid passing through the cooling chamber, the evaporation tube is connected to the condensation unit by the first connection pipe An evaporator; A heat exchange chamber having an inlet and an outlet through which the heat exchange fluid is input and output; It is installed in the heat exchange chamber, and consists of a plurality of condensation tube is condensed by heat exchange with the heat exchange fluid passing through the heat exchange chamber while the vaporized refrigerant passes through, the condensation tube is connected to the evaporation pipe path by a second connection pipe path Condensation unit; Characterized in that configured.

본 발명에 의하면, 냉각장치에 히트파이프의 원리를 적용하여 소형 및 경량화를 구현할 수 있고, 유지보수비용을 현저히 절감할 수 있도록 하는 효과를 기대할 수 있다.According to the present invention, by applying the principle of the heat pipe to the cooling device can be implemented in a small and light weight, it can be expected that the effect to significantly reduce the maintenance cost.

변압기, 히트파이프, 냉각장치, 증발부, 열교환실, 응축부, Transformer, heat pipe, chiller, evaporator, heat exchange chamber, condenser,

Description

변압기용 히트파이프식 냉각장치{Heat pipe type cooling device}Heat pipe type cooling device for transformers

본 발명은 변압기용 히트파이프식 냉각장치에 관한 것으로서, 특히 냉매가 순환하는 히트파이프 방식의 증발부와 응축부를 갖는 냉각실과 열교환실로 이루어진 냉각장치를 제공하여 전체적인 냉각장치의 크기를 기존에 비해 현저히 줄여줄 수 있도록 한 변압기용 히트파이프식 냉각장치에 관한 것이다.The present invention relates to a heat pipe type cooling device for a transformer, and in particular, to provide a cooling device comprising a heat pipe and a cooling chamber having a heat pipe type evaporation unit and a condensation unit in which a refrigerant circulates, thereby significantly reducing the size of the overall cooling system. The present invention relates to a heat pipe type cooling device for a transformer.

현재 전력용 변압기에는 공냉식 라디에이터 방식 및 수냉식 냉각장치가 사용되고 있으며, 라디에이터 방식 냉각장치의 경우 변압기 중신부(권선부 및 철심부)의 발열량에 따라 라이데이터의 용량 및 크기가 결정되며, 발열량이 클경우 라이데이터의 크기가 변압기 본체의 크기보다 클 경우가 빈번하며, 설치되는 공간이 협소할 시 설치에 대한 에로방생 등의 적용한계가 발생하는 문제점이 있었다.Air-cooled radiator and water-cooled chillers are used for power transformers.In the case of radiator-type coolers, the capacity and size of the lydata are determined by the calorific value of the transformer's core part (winding part and iron core part). Frequently, the size of the lydata is larger than the size of the transformer main body, there is a problem that the application limit such as erotic defense on the installation occurs when the space is installed narrow.

또한 수냉식 냉각장치의 경우 쿨링타워, 배관 등의 설치가 필수적으로 냉각장치의 보조품의 시공비용이 소요되는 문제점이 발생하고 있었다.In addition, in the case of a water-cooled cooling device, the installation of cooling towers, pipes, etc., has a problem in that construction cost of auxiliary equipment of the cooling device is required.

상기 목적달성을 위한 본 발명은 종래 공냉식 라디에이터 방식 냉각장치에 비해 높은 냉각효율을 가지고 있으면서 소형 및 경량이며, 변압기 운송의 용이성 및 협소한 장소에도 용이하게 설치할 수 있고, 유지보수비용을 현저히 절감할 수 있도록 한 변압기용 히트파이프식 냉각장치에 관한 것이다.The present invention for achieving the above object is a compact and lightweight while having a high cooling efficiency compared to the conventional air-cooled radiator type cooling device, can be easily installed in the transformer transport and narrow places, and can significantly reduce the maintenance cost The present invention relates to a heat pipe type cooling device for a transformer.

상기 목적달성을 위한 본 발명은, 냉각대상유체가 입출력되기 위한 입구와 출구를 갖는 냉각실과; 상기 냉각실 내부에 설치되고, 냉각실 내부를 통과하는 냉각대상유체를 냉각시키면서 증발하여 기화하는 냉매가 순환하는 복수개의 증발관로로 이루어지며, 상기 증발관로가 제 1 연결관로에 의해 응축부로 연결되는 증발부와; 열교환유체가 입출력되기 위한 입구와 출구를 갖는 열교환실과; 상기 열교환실 내부에 설치되고, 기화된 냉매가 통과하면서 열교환실 내부를 통과하는 열교환유체와 열교환하여 응축되는 복수개의 응축관으로 이루어지며, 상기 응축관이 제 2 연결관로에 의해 증발관로에 연결되는 응축부; 로 구성한 것을 특징으로 한다. The present invention for achieving the above object, the cooling chamber having an inlet and an outlet for the cooling object fluid input and output; It is installed in the cooling chamber, and consists of a plurality of evaporation tube circulating the refrigerant to evaporate by evaporating while cooling the cooling target fluid passing through the cooling chamber, the evaporation tube is connected to the condensation unit by the first connection pipe An evaporator; A heat exchange chamber having an inlet and an outlet through which the heat exchange fluid is input and output; It is installed in the heat exchange chamber, and consists of a plurality of condensation tube is condensed by heat exchange with the heat exchange fluid passing through the heat exchange chamber while the vaporized refrigerant passes through, the condensation tube is connected to the evaporation pipe path by a second connection pipe path Condensation unit; Characterized in that configured.

본 발명에 의하면, 냉각장치에 히트파이프의 원리를 적용하여 소형 및 경량화를 구현할 수 있고, 유지보수비용을 현저히 절감할 수 있도록 하는 효과를 기대할 수 있다.According to the present invention, by applying the principle of the heat pipe to the cooling device can be implemented in a small and light weight, it can be expected that the effect to significantly reduce the maintenance cost.

이하, 첨부된 도면 도 1 내지 도 6 을 참조하여 본 발명의 바람직한 실시예를 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, FIGS. 1 to 6.

본 발명을 설명함에 있어서 정의되는 용어들은 본 발명에서의 기능을 고려하여 정의 내려진 것으로, 본 발명의 기술적 구성요소를 한정하는 의미로 이해되어서는 아니 될 것이다.The terms defined in describing the present invention have been defined in consideration of the functions of the present invention and should not be construed to limit the technical elements of the present invention.

상기 도면에 의하면, 본 발명은 도 1 과 같은 기본구조를 갖는다.According to the drawings, the present invention has a basic structure as shown in FIG.

본 발명은 냉각실(1), 증발부(2), 열교환실(3), 응축부(4)로 대별 구성된다.The present invention is roughly composed of a cooling chamber (1), an evaporation unit (2), a heat exchange chamber (3), and a condensation unit (4).

냉각실(1)은 냉각대상유체가 입력되기 위한 입구(11)가 일측에 형성되고, 타측에는 냉각대상유체가 배출되기 위한 출구(12)가 형성된 구조이다.The cooling chamber 1 has a structure in which an inlet 11 for inputting a cooling object fluid is formed at one side, and an outlet 12 for discharging the cooling object fluid is formed at the other side.

상기 냉각대상유체로는 본 발명의 냉각장치가 가스변압기에 적용되었을때에는 SF6가스이고, 오일변압기에 적용되었을때에는 오일이다.The fluid to be cooled is SF6 gas when the cooling device of the present invention is applied to a gas transformer, and oil when it is applied to an oil transformer.

즉, 냉각실(1)은 SF6가스 또는 오일을 냉각시키는 것이다.That is, the cooling chamber 1 cools SF6 gas or oil.

증발부(2)는 상기 냉각실(1) 내부에 설치되는 것으로서, 냉각실(1) 내부를 통과하는 냉각대상유체를 냉각시키면서 증발하여 기화하는 냉매가 순환하는 복수개의 증발관로(21)로 이루어지며, 상기 증발관로(21)가 제 1 연결관로(22)에 의해 응축부(4)로 연결된다.The evaporator 2 is installed inside the cooling chamber 1, and consists of a plurality of evaporation pipe paths 21 through which refrigerant evaporates and vaporizes while cooling a cooling target fluid passing through the cooling chamber 1. The evaporation line 21 is connected to the condensation unit 4 by the first connection line 22.

상기 증발관로(21)로는 후설하는 응축부(4)에서 응축된 액체상태의 냉매가 통과하게되고, 증발관로(21)를 통과하는 냉매는 냉각실(1) 내부를 통과하는 냉각대상유체를 냉각시키면서 열을 흡수하고, 이과정에서 기화하여 제 1 연결관로(22)를 통해 응축부(4)의 응축관로(41)로 공급된다.The refrigerant in the liquid state condensed in the condensation unit 4 to be installed later passes through the evaporation tube 21, and the refrigerant passing through the evaporation tube 21 cools the cooling target fluid passing through the inside of the cooling chamber 1. While absorbing heat and vaporizing in this process, it is supplied to the condensation pipe line 41 of the condensation unit 4 through the first connecting pipe line 22.

상기 증발관로(21)는 그 냉각효율을 향상시키기 위해 도 5 에 도시된 바와같이 다수의 냉각핀이 구비된 핀튜브(23)로서 구현할 수 있다.The evaporation channel 21 may be implemented as a fin tube 23 having a plurality of cooling fins as shown in FIG. 5 to improve the cooling efficiency.

상기 열교환실(3)은 응축부(4)를 통과하는 기체상태의 냉매를 열교환시켜 액체로 응축시키는 것으로서, 열교환유체가 유입되는 입구(31)와 열교환유체가 배출되는 출구(32)로 이루어진다.The heat exchange chamber 3 heat-exchanges the gaseous refrigerant passing through the condensation unit 4 to condense it into a liquid. The heat exchange chamber 3 includes an inlet 31 through which heat exchange fluid is introduced and an outlet 32 through which the heat exchange fluid is discharged.

상기 열교환유체는 대기중의 공기를 적용할 수 있으며, 이 열교환유체를 강제 순환시키는 수단으로 상기 열교환실(3) 내부에 축류팬(51)과 모터(52)로 이루어진 송풍기(5)를 설치할 수 있다.The heat exchange fluid may apply air in the atmosphere, and the blower 5 including the axial fan 51 and the motor 52 may be installed inside the heat exchange chamber 3 as a means of forcibly circulating the heat exchange fluid. have.

상기 응축부(4)는 열교환실(3) 내부에 설치되는 것으로, 기화된 냉매가 통과하면서 열교환실(3) 내부를 통과하는 열교환유체와 열교환하여 응축되는 복수개의 응축관(41)으로 이루어지며, 상기 응축관(41)이 제 2 연결관로(42)에 의해 증발관로(21)에 연결된다.The condensation unit 4 is installed in the heat exchange chamber 3, and is composed of a plurality of condensation tubes 41 condensed by heat exchange with heat exchange fluid passing through the heat exchange chamber 3 while vaporized refrigerant passes therethrough. The condensation pipe 41 is connected to the evaporation pipe path 21 by the second connection pipe path 42.

상기 설명과 같이 본 발명의 냉각장치는 냉매가 증발관로(21)와 응축관로(41)를 순환하면서 기체상태와 액체상태로 상변화되고, 이 과정에서 냉각실(1) 내부로 유입된 냉각대상유체를 냉각시키는 것이다.As described above, in the cooling apparatus of the present invention, the refrigerant is phase-changed into a gas state and a liquid state while circulating the evaporation line 21 and the condensation line 41, and the cooling object introduced into the cooling chamber 1 in this process. To cool the fluid.

도 2 는 본 발명의 냉각장치를 가스변압기에 적용한 실시예를 도시한 것으로서, 냉각실(1)의 입구(11)로 SF6가스(냉각대상유체)가 유입되고, 열교환실(3)로는 송풍기(5)에 의해 공기(열교환유체)가 강제 공급되도록 구성되므로, 변압기에서 사용된 고온의 SF6가스는 증발부(2)에 의해 냉각되고, 증발부(2)의 증발관로(21)를 통과하는 냉매는 SF6 가스로 부터 빼앗은 열에 의해 증발되어 기체상태로 응축관 로(41)에 공급되고, 응축관로(41)를 통과하는 기체상태의 냉매는 열교환실(3) 내부를 통과하는 공기에 의해 냉각되면서 액체상태로 응축되어 다시 증발관로(21)로 공급된다.2 shows an embodiment in which the cooling device of the present invention is applied to a gas transformer, in which SF 6 gas (fluid to be cooled) flows into the inlet 11 of the cooling chamber 1, and a blower (3) into the heat exchange chamber (3). 5) Since the air (heat exchange fluid) is configured to be forcibly supplied, the high-temperature SF6 gas used in the transformer is cooled by the evaporator 2 and passes through the evaporator tube 21 of the evaporator 2. Is evaporated by the heat taken from the SF6 gas and supplied to the condensation tube furnace 41 in a gaseous state, and the gaseous refrigerant passing through the condensation tube passage 41 is cooled by air passing through the inside of the heat exchange chamber 3. The liquid is condensed and supplied to the evaporation tube 21 again.

증발부(2)에서 응축부(4)로 니송되는 냉매 이송 파이프의 단면적은 도 3 (a)(b) 그래프 곡선과 같이 최대 열유속과 파이프 내경과의 관계를 만족하는 면적을 가지는 것이 바람직하다.It is preferable that the cross-sectional area of the refrigerant conveying pipe that is sent from the evaporator 2 to the condenser 4 has an area that satisfies the relationship between the maximum heat flux and the pipe inner diameter, as shown in the graph curve of FIG.

그리고, 상기 증발부(2)의 증발관로는 다수의 냉각핀을 갖는 핀튜브(23)를 적용한다.And, the evaporator tube of the evaporator 2 is applied to the fin tube (23) having a plurality of cooling fins.

그리고, 도 4 는 본 발명의 냉각장치를 오일변압기에 적용한 실시예를 도시한 것으로서, 냉각실(1)의 입구(11)를 통해 변압기에서 사용된 오일이 공급되고, 상기 냉각실(1)로 공급된 오일은 증발부(2)에 의해 냉각되어 출구(12)를 통해 배출되며, 앞서 설명한 것과같이 오일로 부터 열을 빼앗은 냉매는 증발관로(21)를 통해 응축부(4)의 응축관(41)으로 순환되고, 응축관(41)으로 공급된 기체상태의 냉매는 다시 열교환실(3)을 통과하는 공기와 열교환하면서 냉각 응축되어 액체상태로 다시 증발관로(21)에 재순환 공급되는 것이다.And, Figure 4 shows an embodiment of applying the cooling device of the present invention to the oil transformer, the oil used in the transformer is supplied through the inlet 11 of the cooling chamber 1, to the cooling chamber (1) The supplied oil is cooled by the evaporator 2 and discharged through the outlet 12. As described above, the refrigerant deprived of heat from the oil is condensed into the condensation unit 4 of the condensation unit 4 through the evaporation tube 21. The gaseous refrigerant circulated to 41 and supplied to the condensation tube 41 is cooled and condensed while heat-exchanging with air passing through the heat exchange chamber 3 again, and is recycled and supplied back to the evaporation tube 21 in a liquid state.

상기 증발관로(21)는 냉각효율의 증대를 위해 다수의 냉각핀이 돌출되어 있는 핀 튜브(23)를 사용하는 것이 바람직하고, 증발부(2)는 열교환효율의 극대화를 위해 도 6 과 같이 핀 튜브(23)를 2층구조로 배치하는 것이 바람직하다.Preferably, the evaporator line 21 uses a fin tube 23 protruding a plurality of cooling fins to increase the cooling efficiency, and the evaporator 2 fins as shown in FIG. 6 to maximize heat exchange efficiency. It is preferable to arrange the tube 23 in a two-layer structure.

본 발명을 통해 개발된 히트파이프식 냉각기를 기존 한전 154kV급 변압기와 비교시 가스변압기의 경우 설계된 냉각기의 크기는 일반 플레이트핀 방식 냉각기와 비교하여 약 20%의 체적감소로 계산되었으며, 오일변압기에 적용시 약 53%의 체적감소가 가능하며, 더불어 체적감소에 따른 오일 양의 감소도 가능함이 예측되어 변압기의 소형/경량화에 그 독창성을 찾을 수 있다.Compared to the conventional KEPCO 154kV transformer, the size of the designed cooler was calculated as a volume reduction of about 20% compared to the general plate fin type cooler, and applied to the oil transformer. A volume reduction of about 53% is possible, as well as a reduction in the amount of oil due to the volume reduction, and thus the originality can be found in the miniaturization and weight reduction of the transformer.

도 1 은 본 발명의 변압기용 히트파이프식 냉각장치의 기본구조를 보인 도면.1 is a view showing the basic structure of the heat pipe type cooling device for a transformer of the present invention.

도 2 는 본 발명이 가스변압기에 적용된 실시예를 보인 도면.2 is a view showing an embodiment in which the present invention is applied to a gas transformer.

도 3 은 본 발명의 열적특성을 보인 그래프.3 is a graph showing the thermal characteristics of the present invention.

도 4 는 본 발명이 오일변압기에 적용된 실시예를 보인 도면.4 is a view showing an embodiment in which the present invention is applied to an oil transformer.

도 5 는 본 발명에 적용된 핀튜브를 보인 도면.5 is a view showing a fin tube applied to the present invention.

도 6 은 본 발명에 적용된 증발부의 실시예를 보인 도면.Figure 6 is a view showing an embodiment of the evaporator applied to the present invention.

*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

1: 냉각실, 2: 증발부,1: cooling chamber, 2: evaporator,

3: 열교환실, 4: 응축부,3: heat exchange chamber, 4: condensation unit,

5: 송풍기, 21: 증발관로,5: blower, 21: with evaporator tube,

22: 제 1 연결관로, 41: 응축관,22: first connector, 41: condensation tube,

42: 제 2 연결관로, 42: with the second connector,

Claims (6)

냉각대상유체가 입출력되기 위한 입구와 출구를 갖는 냉각실과; 상기 냉각실 내부에 설치되고, 냉각실 내부를 통과하는 냉각대상유체를 냉각시키면서 증발하여 기화하는 냉매가 순환하는 복수개의 증발관로로 이루어지되, 상기 증발관로가 제 1 연결관로에 의해 응축부로 연결되는 증발부와; 열교환유체가 입출력되기 위한 입구와 출구를 갖는 열교환실과; 상기 열교환실 내부에 설치되고, 기화된 냉매가 통과하면서 열교환실 내부를 통과하는 열교환유체와 열교환하여 응축되는 복수개의 응축관으로 이루어지며, 상기 응축관이 제 2 연결관로에 의해 증발관로에 연결되는 응축부로 구성하며,A cooling chamber having an inlet and an outlet through which the cooling object fluid is input and output; It is installed in the cooling chamber, and consists of a plurality of evaporation pipe circulating the refrigerant to evaporate by evaporating while cooling the cooling target fluid passing through the cooling chamber, the evaporation pipe is connected to the condensation unit by the first connecting pipe An evaporator; A heat exchange chamber having an inlet and an outlet through which the heat exchange fluid is input and output; It is installed in the heat exchange chamber, and consists of a plurality of condensation tube is condensed by heat exchange with the heat exchange fluid passing through the heat exchange chamber while the vaporized refrigerant passes through, the condensation tube is connected to the evaporation pipe path by a second connection pipe path Condensation unit, 상기 증발관로는 다수의 냉각용 핀을 갖는 핀튜브로 이루어지며, The evaporator is composed of a fin tube having a plurality of cooling fins, 상기 증발부는 다수의 냉각용 핀을 갖는 핀튜브가 2층구조로 이루어진 것을 특징으로 하는 변압기용 히트파이프식 냉각장치.The evaporator is a heat pipe type cooling apparatus for a transformer, characterized in that the fin tube having a plurality of cooling fins has a two-layer structure. 제 1 항에 있어서, 상기 냉각대상유체는 가스변압기의 SF6 가스 또는 오일변압기의 오일인 것을 특징으로 하는 변압기용 히트파이프식 냉각장치.2. The heat pipe type cooling device for a transformer according to claim 1, wherein the cooling target fluid is SF6 gas of a gas transformer or oil of an oil transformer. 제 1 항에 있어서, 상기 열교환유체는 공기인것을 특징으로 하는 변압기용 히트파이프식 냉각장치.The heat pipe type cooling device for a transformer according to claim 1, wherein the heat exchange fluid is air. 제 1 항에 있어서, 상기 열교환실에는 열교환유체를 강제 순환시키는 송풍기가 더 구성되는 것을 특징으로 하는 변압기용 히트파이프식 냉각장치.The heat pipe cooling device for a transformer according to claim 1, wherein the heat exchange chamber further comprises a blower for forcibly circulating heat exchange fluid. 삭제delete 삭제delete
KR1020080108558A 2008-11-03 2008-11-03 Heat pipe type cooling device KR101102522B1 (en)

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KR20030007381A (en) * 1999-11-17 2003-01-23 트렉스코, 엘엘씨 Apparatus and method for cooling power transformers
KR20030007441A (en) * 2000-02-24 2003-01-23 유니핀 인터내셔날, 인코포레이티드 System and method for cooling transformers
KR20030017695A (en) * 2001-08-21 2003-03-04 엘지전자 주식회사 organic electroluminescence device of triple scan structure
KR200317695Y1 (en) 2002-10-29 2003-06-25 (주)네오유토 Cooler having heat-pipe-sink for chip module of electronic equipment
KR20080053783A (en) * 2006-12-11 2008-06-16 엘에스전선 주식회사 Heat pipe and cooling apparatus using the same

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030007381A (en) * 1999-11-17 2003-01-23 트렉스코, 엘엘씨 Apparatus and method for cooling power transformers
KR20030007441A (en) * 2000-02-24 2003-01-23 유니핀 인터내셔날, 인코포레이티드 System and method for cooling transformers
KR20030017695A (en) * 2001-08-21 2003-03-04 엘지전자 주식회사 organic electroluminescence device of triple scan structure
KR200317695Y1 (en) 2002-10-29 2003-06-25 (주)네오유토 Cooler having heat-pipe-sink for chip module of electronic equipment
KR20080053783A (en) * 2006-12-11 2008-06-16 엘에스전선 주식회사 Heat pipe and cooling apparatus using the same

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