KR20010011091A - Heat Pipe having a Carbon Fiber Wick - Google Patents

Heat Pipe having a Carbon Fiber Wick Download PDF

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Publication number
KR20010011091A
KR20010011091A KR1019990030311A KR19990030311A KR20010011091A KR 20010011091 A KR20010011091 A KR 20010011091A KR 1019990030311 A KR1019990030311 A KR 1019990030311A KR 19990030311 A KR19990030311 A KR 19990030311A KR 20010011091 A KR20010011091 A KR 20010011091A
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KR
South Korea
Prior art keywords
pipe
wick
heat pipe
carbon fiber
heat
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KR1019990030311A
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Korean (ko)
Inventor
최춘기
한재섭
김광수
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정선종
한국전자통신연구원
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Priority to KR1019990030311A priority Critical patent/KR20010011091A/en
Publication of KR20010011091A publication Critical patent/KR20010011091A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F28D15/0266—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F28D15/04—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
    • F28D15/046—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure characterised by the material or the construction of the capillary structure

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)

Abstract

PURPOSE: A heat pipe having a carbon fiber wick is provided to improve the performance of the heat pipe and to produce a heat pipe product by making a production process of the heat pipe easy and securing sufficient capillary force and heat transfer force. CONSTITUTION: A pipe(10) is formed in a cylindrical shape. A carbon fiber(55) having excellent capillary and heat transfer force is equally distributed on the circumference of an inner wall of the pipe. In addition, the carbon fiber is pushed to be attached to the inner wall of the pipe by using a spiral spring(60) after tied into a bundle and inserted in a certain portion. Thereby, a wick is made up so that the heat pipe has the capillary and heat transfer force to normally act. Further, a production process is simplified without a process for making up a groove on the inner wall or a porous sinter process.

Description

카본파이버 윅을 갖는 히트파이프{Heat Pipe having a Carbon Fiber Wick}Heat Pipe Having a Carbon Fiber Wick

본 발명은 히트파이프에 관한 것으로서, 더욱 구체적으로는 히트파이프내의 윅 구조를 개선하여 작동유체의 순환효율과 열이송력을 증대시켜 히트파이프의 성능을 향상시킬 수 있는 카본파이버(carbon fiber) 윅을 갖는 히트파이프에 관한 것이다.The present invention relates to a heat pipe, and more particularly to a carbon fiber wick which can improve the performance of the heat pipe by improving the wick structure in the heat pipe to increase circulation efficiency and heat transfer power of the working fluid. It relates to a heat pipe having.

히트파이프는 작동유체의 증발 잠열을 이용하여 작은 온도차에서도 무동력으로 열을 매우 빠른 속도를 이송하는 장치이다. 이러한 히트파이프를 도 1에 보인다.The heat pipe is a device that transfers heat very quickly with no power even at small temperature difference by using latent heat of evaporation of working fluid. This heat pipe is shown in FIG.

도 1은 일반적인 히트파이프의 작동 원리를 설명하기 위해 도시된 단면도로서, 도시된 바와 같이 히트파이프는 진공상태의 파이프(10) 내부에 증류수와 같은 매우 작은 량의 열전달 매체(작동유체)를 주입하고 봉인한 것으로, 크게 증발부(20), 단열부(30), 응축부(40)로 나누어 진다.FIG. 1 is a cross-sectional view illustrating the operation principle of a general heat pipe. As shown, the heat pipe injects a very small amount of a heat transfer medium (working fluid) such as distilled water into a vacuum pipe 10. Sealed, it is largely divided into the evaporator 20, the heat insulating portion 30, the condensation portion 40.

히트파이프의 작동원리를 살펴보면, 열원이 위치하고 있는 증발부(20)에서 열을 흡수하여 작동유체는 증기 상태로 파이프(10) 내부에 확산하여, 단열이송부(30)를 지나 응축부(40)에서 열을 방출하고, 작동유체는 응축된 후 액체로 되어 파이프(10)의 윅(50) 벽면을 타고 증발부(20)로 귀환한다.Looking at the operating principle of the heat pipe, the heat absorbing heat from the evaporator 20 is located in the heat source is the working fluid diffused into the pipe 10 in the vapor state, passing through the heat transfer unit 30, the condensation unit 40 Heat is discharged, the working fluid is condensed and becomes a liquid and returns to the evaporator 20 through the wall of the wick 50 of the pipe 10.

그리고, 다시 열을 받아 증발하는 작동을 연속적으로 반복하므로서 열을 이송하는 것이다.Then, the heat is transferred by continuously repeating the operation of receiving the heat again and evaporating.

증발부(20)와 단열이송부(30)는 같은 온도를 가지며, 응축부(40)보다는 온도가 높다. 또한, 각 부분에서의 증기압은 포화 상태가 되며, 증기압의 관계는 증발부(20)와 단열이송부(30)가 같은 압력을 가지며, 단열이송부(30)의 압력은 응축부(40)보다 높다.The evaporator 20 and the adiabatic transfer part 30 have the same temperature, and have a higher temperature than the condensation part 40. In addition, the vapor pressure in each portion is saturated, the relationship between the vapor pressure is the evaporator 20 and the adiabatic transfer unit 30 has the same pressure, the pressure of the adiabatic transfer unit 30 than the condensation unit 40 high.

이러한 결과로 증기는 증발부(20)에서 단열이송부(30)를 지나 응축부(40)로 이송된다. 이런 현상은 열전달 속도가 음속에 가까운 속도이므로 매우 빠르게 일어난다.As a result of this, the steam is transferred from the evaporator 20 to the condensation unit 40 through the adiabatic transfer unit 30. This happens very quickly because the heat transfer rate is close to the speed of sound.

이와 같은 히트파이프에서, 그 성능은 작동유체의 종류 및 주입량, 파이프(10) 내부의 진공상태 및 청결도 등 여러 가지 변수에 영향을 받을 수 있으나, 특히 응축부(40)에서 응축된 액체가 증발부(20)로 잘 귀환할 수 있도록 하는 것이 매우 중요하다.In such a heat pipe, the performance may be affected by various variables such as the type and amount of injection fluid, the vacuum and cleanliness of the pipe 10, and in particular, the liquid condensed in the condenser 40 may be evaporated. It is very important to be able to return well to (20).

이와 같이, 파이프(10) 내부의 작동유체의 원활한 순환을 위하여 윅(50)을 인입하거나, 내벽에 홈(groove)을 가공하여 모세관력이 생기도록 한다. 윅(50)으로 사용되는 것은 스크린 메쉬(screen mesh), 선재나 스프링 등 윅(50) 재료 표면의 가공 및 표면처리없이 히트파이프 내부에 주입하여 사용한다. 또한, 내부 벽면의 홈은 기계적 가공이나 다공질 소결 등에 의해 형성된다.As such, the wick 50 is drawn in to smoothly circulate the working fluid inside the pipe 10 or a groove is formed in the inner wall to generate capillary force. Used as the wick 50 is injected into the heat pipe without processing and surface treatment of the surface of the wick 50 material such as screen mesh, wire rod or spring. In addition, the groove of the inner wall surface is formed by mechanical processing, porous sintering, or the like.

이와 같은 윅에 대한 선행기술로서, 열전달 특성을 향상시키기 위하여 파이프의 내벽에 금속표면 처리를 하거나, 파이프 내벽에 유기 및 무기물질로 표면 처리된 금속테이프를 부착함으로써 파이프 중앙으로 증기 통로를 확보하도록 하는 것이 제안되고 있다.As a prior art for such a wick, in order to improve the heat transfer characteristics, a metal surface treatment is performed on the inner wall of the pipe, or a metal tape surface-treated with organic and inorganic materials is attached to the inner wall of the pipe to secure a vapor passage in the center of the pipe. It is proposed.

또 다른 기술로서, 다공질로 소결된 파이프 내벽과 홈(groove)에 의하여 모세관 펌핑력을 증가하고, 원주방향으로 작동유체가 골고루 분배되도록 하거나, 파이프 내에 증기와 액체가 부분적으로 존재하면서 열에 의한 파이프 내부의 증기압 불균형으로 관로를 따라 작동유체가 주기적으로 맥동을 일으키는 현상을 이용하는 방법 등 여러 가지 다양한 기술이 알려져 있다.Another technique is to increase the capillary pumping force by means of porous sintered pipe inner walls and grooves, to distribute the working fluid evenly in the circumferential direction, or to heat inside the pipe with partial presence of steam and liquid in the pipe. Various techniques are known, such as the use of a phenomenon in which the working fluid periodically pulsates along the pipeline due to the vapor pressure imbalance of.

그러나, 상기의 여러 가지 형태의 종래기술은 소형화가 곤란하거나 제조 공정이 까다롭고, 다량의 열을 이송하는데 문제점이 있었다.However, the above various forms of the prior art have difficulty in miniaturization or difficult manufacturing processes, and have a problem in transferring a large amount of heat.

따라서, 본 발명은 상기한 문제점을 개선하기 위하여 히트파이프의 제조 공정을 용이하게 하고 충분한 모세관력과 열이송력을 확보함으로써, 히트파이프의 성능을 개선, 경쟁력 있는 히트파이프 제품을 생산할 수 있도록 한 카본파이버 윅을 갖는 히트파이프을 제공하는데 그 목적이 있다.Accordingly, the present invention facilitates the manufacturing process of the heat pipe in order to improve the above problems, and by securing sufficient capillary force and heat transfer power, thereby improving the performance of the heat pipe, carbon to produce a competitive heat pipe product The purpose is to provide a heat pipe with a fiber wick.

상기한 목적을 달성하기 위한 본 발명은 응축된 작동유체를 증발부로 귀환 시킴에 있어서 모세관력과 보다 빠른 열이송력을 주기 위하여 내부에 윅을 삽입, 설치, 봉인시킨 히트파이프에 있어서, 상기 윅은 카본파이어를 사용하여 파이프 내벽에 밀착시킨 것을 특징으로 한다. 또한, 상기 윅은 카본파이버를 파이프 내벽의 원주상에 골고루 분포하게 하거나 또는 일정부분에 집중되게 다발로 묶어 삽입한 후, 나선형 스프링이나 편조를 이용하여 카본파이버를 파이프 내벽에 밀착되도록 밀어 붙여 부착하는 것을 특징으로 한다.The present invention for achieving the above object is a heat pipe in which the wick is inserted, installed, sealed in order to give the capillary force and faster heat transfer force in returning the condensed working fluid to the evaporator, the wick is It is characterized by being in close contact with the inner wall of the pipe using a carbon fire. In addition, the wick is evenly distributed on the circumference of the inner wall of the pipe or bundled into bundles concentrated in a certain portion, and then attached by pressing the carbon fiber to the inner wall of the pipe by using a spiral spring or braid. It is characterized by.

도 1은 일반적인 히트파이프의 작동 원리를 설명하기 위한 단면도.1 is a cross-sectional view for explaining the principle of operation of a general heat pipe.

도 2(a) 및 도 2(b)는 본 발명에 따른 나선형 스프링을 이용한 카본파이버 윅을 갖는 히트파이프를 설명하기 위한 사시도 및 단면도.2 (a) and 2 (b) are a perspective view and a cross-sectional view for explaining a heat pipe having a carbon fiber wick using a spiral spring according to the present invention.

도 3은 본 발명에 따른 편조를 이용한 카본파이버 윅을 갖는 히트파이프를 설명하기 위한 사시도.Figure 3 is a perspective view for explaining a heat pipe having a carbon fiber wick using braiding according to the present invention.

〈도면의 주요 부분에 대한 부호 설명〉<Description of Signs of Major Parts of Drawings>

10 : 동 파이프 20 : 증발부(가열부)10: copper pipe 20: evaporator (heating unit)

30 : 단열부(이송부) 40 : 응축부(냉각부)30: heat insulation part (transport part) 40: condensation part (cooling part)

50 : 윅 55 : 카본파이버50: wick 55: carbon fiber

60 : 나선형 스프링 70 : 편조60: spiral spring 70: braided

본 발명에서는 작동유체의 증발 잠열을 이용하여 열을 매우 빠른 속도로 이송하는 히트파이프내의 응축된 작동유체를 증발부로 용이하게 귀환시키도록 히트파이프의 내부에 삽입, 설치, 봉인되는 히트파이프용 윅에 있어서, 상기 윅은 카본파이버의 높은 열전달율 및 매우 작은 파이버의 직경, 파이버 표면에 매우 미세한 홈(groove)에 의한 뛰어난 모세관력 등의 특징을 이용하여 응축부로 부터 증발부로 작동유체의 흐름이 원활하도록 나선형 스프링이나 편조를 이용하여 카본파이버를 파이프 내벽에 밀착하여 된 것이다.In the present invention, the heat pipe wick is inserted, installed, and sealed in the heat pipe to easily return the condensed working fluid in the heat pipe to the evaporator by using latent heat of evaporation of the working fluid. The wick is spiraled to smoothly flow the working fluid from the condenser to the evaporator by using features such as high heat transfer rate of carbon fiber, very small fiber diameter, and excellent capillary force due to very fine grooves on the fiber surface. The carbon fiber is in close contact with the inner wall of the pipe using springs or braids.

이하, 첨부된 도면을 참조하여 본 발명을 상세히 설명하기로 한다.Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

도 2(a) 및 도 2(b)는 본 발명에 따른 카본파이버를 윅으로 사용하여 만든 히트파이프를 설명하기 위한 사시도 및 단면도이다.2 (a) and 2 (b) are a perspective view and a cross-sectional view for explaining a heat pipe made using a carbon fiber according to the present invention as a wick.

도 2(a)는 파이프(10) 내부에 윅(50)이 인입되는 형상을 도시하고 있고, 도 2(b)는 파이프(10) 내부에 윅(50)이 인입된 상태를 절단한 단면을 도시하고 있다.FIG. 2 (a) shows a shape in which the wick 50 is drawn into the pipe 10, and FIG. 2 (b) shows a cross section in which the wick 50 is inserted into the pipe 10. FIG. It is shown.

도 2에 도시된 바와 같이, 파이프(10)는 원통형으로 구성되어 있으며, 윅(50)은 뛰어난 모세관력과 열이송력 등의 특징을 가지고 있는 카본파이버를 파이프 내벽의 원주상에 골고루 분포하게 하거나, 또는 일정부분에 집중되게 다발로 묶어 삽입한 후 나선형 스프링을 이용하여 카본파이버를 파이프 내벽에 밀착되도록 밀어 붙여 윅을 형성하도록 이루어져 있다.As shown in FIG. 2, the pipe 10 is formed in a cylindrical shape, and the wick 50 distributes the carbon fiber having characteristics such as excellent capillary force and heat transfer force evenly on the circumference of the inner wall of the pipe. After inserting the bundle in a concentrated manner, or by inserting the bundle, the carbon fiber is pushed to be in close contact with the inner wall of the pipe using a spiral spring to form a wick.

도 3은 본 발명에 따른 편조를 이용한 카본파이버 윅을 갖는 히트파이프를 설명하기 위한 사시도로서, 카본파이버(55)를 파이프 내벽(10)의 원주상에 골고루 분포하게 하거나, 또는 일정부분에 집중되게 다발로 묶어 삽입한 후 편조(70)를 이용하여 카본파이버(55)를 파이프(10) 내벽에 밀착되도록 밀어 붙여 윅을 형성하도록 이루어져 있다.3 is a perspective view for explaining a heat pipe having a carbon fiber wick using braiding according to the present invention, in which the carbon fiber 55 is evenly distributed on the circumference of the inner wall of the pipe 10 or concentrated at a predetermined portion. After the bundle is inserted into the bundle by using the braid 70 to push the carbon fiber 55 to be in close contact with the inner wall of the pipe 10 to form a wick.

이와 같은 본 발명은 히트파이프의 윅 구조를 형성함에 있어, 카본파이버를 파이프 내벽에 밀착되도록 설치하여 히트파이프의 응축부로부터 증발부로 작동유체의 흐름을 원활하게 할 수 있는 모세관력과, 보다 빠른 열이송력을 확보할 수 있으며, 매우 뛰어난 열전달이 가능하도록 한다.In the present invention, in forming the wick structure of the heat pipe, the carbon fiber is installed to be in close contact with the inner wall of the pipe, so that the capillary force capable of smoothly flowing the working fluid from the condensation part of the heat pipe to the evaporation part, and faster heat It can secure the transfer power and make very good heat transfer.

이상에서 설명한 본 발명은 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 있어 본 발명의 기술적 사상을 벗어나지 않는 범위에서 여러 가지 치환, 변형 및 변경이 가능하므로 전술한 실시예 및 첨부된 도면에 한정되는 것이 아니다.The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited.

상술한 바와 같이, 본 발명은 카본파이버를 파이프 내벽의 원주상에 골고루 분포하게 하거나, 또는 일정부분에 집중되게 다발로 묶어 삽입한 후 나선형 스프링이나 편조를 이용하여 카본파이버를 파이프 내벽에 밀착되도록 밀어 붙여 윅을 형성한다. 이에 따라, 히트파이프가 충분한 성능을 갖고 정상적으로 작동할 수 있는 모세관력과 열이송력을 가질 수 있다. 또한, 히트파이프의 내벽에 홈을 가공하는 공정이나 다공질 소결 공정이 필요없어 제조공정을 간소화시킬 수 있으며, 선재나 스크린 메쉬보다 뛰어난 모세관력과 열이송력을 얻을 수 있는 것으로, 히트파이프의 성능을 향상하고 제작을 용이하게 하는 매우 유용한 기술이다.As described above, the present invention is to distribute the carbon fiber evenly on the circumference of the inner wall of the pipe, or to bundle the bundle concentrated in a certain portion, and then push the carbon fiber to the inner wall of the pipe using a spiral spring or braiding Paste to form a wick. Accordingly, the heat pipe may have capillary force and heat transfer force capable of operating normally with sufficient performance. In addition, it is possible to simplify the manufacturing process by eliminating the process of forming grooves or porous sintering process on the inner wall of the heat pipe, and to obtain capillary force and heat transfer force superior to wire or screen mesh. It is a very useful technique to improve and to facilitate production.

Claims (2)

응축된 작동유체를 증발부로 귀환 시킴에 있어서 모세관력과 보다 빠른 열이송력을 주기 위하여 내부에 윅을 삽입, 설치, 봉인시킨 히트파이프에 있어서,In the heat pipe in which the wick is inserted, installed and sealed in order to give the capillary force and the faster heat transfer force in returning the condensed working fluid to the evaporator, 상기 윅은 카본파이어를 사용하여 파이프 내벽에 밀착시킨 것을 특징으로 하는 카본파이버 윅을 갖는 히트파이프.The wick is a heat pipe having a carbon fiber wick, characterized in that in contact with the inner wall of the pipe using a carbon fire. 제 1항에 있어서,The method of claim 1, 상기 윅은 카본파이버를 파이프 내벽의 원주상에 골고루 분포하게 하거나 또는 일정부분에 집중되게 다발로 묶어 삽입한 후, 나선형 스프링이나 편조를 이용하여 카본파이버를 파이프 내벽에 밀착되도록 밀어 붙여 부착하는 것을 특징으로 하는 카본파이버 윅을 갖는 히트파이프.The wick is evenly distributed on the circumference of the inner wall of the pipe or bundled into bundles concentrated in a certain portion, and then attached by pressing the carbon fiber in close contact with the inner wall of the pipe using a spiral spring or braid. Heat pipe having a carbon fiber wick.
KR1019990030311A 1999-07-26 1999-07-26 Heat Pipe having a Carbon Fiber Wick KR20010011091A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004063633A1 (en) * 2003-01-11 2004-07-29 Hyung-Gon Kim Electric heating pipe and electric heating apparatus using it
US10922729B2 (en) 2006-02-27 2021-02-16 Trace Produce, LLC Methods and systems for accessing information related to an order of a commodity
US11954715B2 (en) 2006-02-27 2024-04-09 Trace Produce, LLC Methods and systems for accessing information related to an order of a commodity

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004063633A1 (en) * 2003-01-11 2004-07-29 Hyung-Gon Kim Electric heating pipe and electric heating apparatus using it
US7429720B2 (en) 2003-01-11 2008-09-30 Hyung-Gon Kim Electric heating pipe and electric heating apparatus using it
US10922729B2 (en) 2006-02-27 2021-02-16 Trace Produce, LLC Methods and systems for accessing information related to an order of a commodity
US11132726B2 (en) 2006-02-27 2021-09-28 Trace Produce, LLC Methods and systems for accessing information related to an order of a commodity
US11954715B2 (en) 2006-02-27 2024-04-09 Trace Produce, LLC Methods and systems for accessing information related to an order of a commodity

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