JPWO2006059622A1 - Magnetic convection heat circulation pump - Google Patents
Magnetic convection heat circulation pump Download PDFInfo
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- JPWO2006059622A1 JPWO2006059622A1 JP2006547961A JP2006547961A JPWO2006059622A1 JP WO2006059622 A1 JPWO2006059622 A1 JP WO2006059622A1 JP 2006547961 A JP2006547961 A JP 2006547961A JP 2006547961 A JP2006547961 A JP 2006547961A JP WO2006059622 A1 JPWO2006059622 A1 JP WO2006059622A1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F23/00—Features relating to the use of intermediate heat-exchange materials, e.g. selection of compositions
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
- F28F2250/08—Fluid driving means, e.g. pumps, fans
Abstract
Description
本発明は、熱エネルギーを移送する素子に関し、特に、磁場の磁束密度と磁性体の飽和磁化の温度特性を利用した磁性対流熱循環ポンプに関する。 The present invention relates to an element that transfers thermal energy, and more particularly to a magnetic convection heat circulation pump that utilizes the temperature characteristics of the magnetic flux density of a magnetic field and the saturation magnetization of a magnetic material.
熱を移送する素子の中で、磁場における磁性流体の飽和磁化の温度依存性に起因する磁性対流を利用した熱の移送素子は古くより考案されてきたが、磁性体の微粉末化や磁性体をコートする界面活性剤の塗布精度などに起因する磁性体の分散媒中における不均一な分布や大きな残留磁化が磁性対流を阻害し製品化を妨げてきた。 Among heat transfer elements, heat transfer elements that utilize magnetic convection due to the temperature dependence of the saturation magnetization of a magnetic fluid in a magnetic field have been devised for a long time. The non-uniform distribution of the magnetic substance in the dispersion medium and the large remanent magnetization caused by the coating accuracy of the surface-active agent that has been used to prevent magnetic convection have hindered commercialization.
近年では、上述された問題に対する解決策も試みられ、例えば、特開平１０−２３１８１４号公報や特開平３−１０２８０４号公報に開示されているように、ガス等の常磁性体や残留磁化の非常に小さい磁性流体などの移送手段として、磁場近辺にヒーター等を配置して飽和磁化の温度依存性を利用した装置が開発されている。 In recent years, solutions to the above-mentioned problems have been attempted, and, for example, as disclosed in JP-A-10-231814 and JP-A-3-102804, paramagnetic substances such as gas and remanent magnetization are extremely As a means for transporting a very small magnetic fluid, a device has been developed in which a heater or the like is arranged in the vicinity of a magnetic field to utilize the temperature dependence of saturation magnetization.
しかし、ヒーターなどの熱入力部を構成した場合は移送する素材そのものの温度が上昇してしまう為に使用用途が限られる上に、放熱などを目的とした熱移送では逆に大きな損失を生じることになり、使用に適さないなどの問題があった。 However, when a heat input part such as a heater is configured, the temperature of the material to be transferred rises, so the usage is limited, and conversely a large loss occurs in heat transfer for the purpose of heat dissipation. There was a problem that it was not suitable for use.
更には、電磁石を所定間隔に並べて順次磁場を移動させる方法なども開示されているが、電磁石の制御や電気配線などが必要となり、装置は複雑で高価な物となる。 Further, a method of arranging electromagnets at predetermined intervals and sequentially moving a magnetic field has been disclosed, but control of the electromagnets and electric wiring are required, and the apparatus becomes complicated and expensive.
そこで本発明は、電気的な駆動源を使わずに、磁場の磁束密度と磁性体の飽和磁化の温度特性を利用して、磁場中における磁性流体の温度勾配を大きく取り、飽和磁化値の差を生じさせることにより効率よく動力に変換できる磁性対流熱循環ポンプを提供することを目的とする。 Therefore, the present invention takes advantage of the magnetic flux density of the magnetic field and the temperature characteristic of the saturation magnetization of the magnetic material without using an electric drive source to obtain a large temperature gradient of the magnetic fluid in the magnetic field to obtain a difference in saturation magnetization value. It is an object of the present invention to provide a magnetic convection heat circulation pump that can efficiently convert power by generating heat.
前記目的を達成する為に、本発明は、受熱部を通過する循環流路内又は循環流路の一部を形成するように磁石を配置することで、磁力が直接的に作用し、前記磁石が作り出す磁場における磁性流体の飽和磁化の温度依存性により、受熱部からの熱入力による温度勾配が継続的な磁性流体の磁性対流を引き起こすことを利用した磁性対流熱循環ポンプを提供する。 In order to achieve the above-mentioned object, according to the present invention, by arranging the magnet so as to form a part of the circulation flow passage that passes through the heat receiving portion, the magnetic force directly acts, and the magnet (EN) A magnetic convection heat circulation pump that utilizes the fact that the temperature dependence of the saturation magnetization of a magnetic fluid in the magnetic field produced by the magnetic field causes a continuous magnetic convection of the magnetic fluid due to the heat input from the heat receiving part.
本発明の磁性対流熱循環ポンプは受熱部の熱入力が作動源となり、磁性流体が磁場により磁性対流を起して受熱部と放熱部とを循環する構成で、構造が非常に簡単であり、しかも受熱部と放熱部の温度差がある限り動作は継続し、更に温度差が広がれば循環速度が速くなり多くの熱量を容易に運ぶことができる等の利点がある。 In the magnetic convection heat circulation pump of the present invention, the heat input of the heat receiving portion serves as an operation source, and the magnetic fluid causes magnetic convection by the magnetic field to circulate between the heat receiving portion and the heat radiating portion, and has a very simple structure. Moreover, the operation is continued as long as there is a temperature difference between the heat receiving portion and the heat radiating portion, and if the temperature difference is further widened, the circulation speed is increased and a large amount of heat can be easily carried.
本発明では、磁性流体の磁場流路内又は流路の内壁面の一部にニッケルメッキ等で表面処理をした磁石を配置し、更に前記磁石若しくは循環流路の内壁面の一部又は全部を前記磁性流体の磁性体をコーティングしている界面活性剤のイオン特性と同種の界面活性剤でコーティングすることにより、前記磁性流体に直接的に磁場が作用する上に、流路抵抗をも軽減する構成とした。 In the present invention, a magnet whose surface is treated by nickel plating or the like is arranged in a part of an inner wall surface of the magnetic field of the magnetic fluid or the inner wall surface of the passage, and further, a part or all of the inner wall surface of the magnet or the circulation passage is By coating with a surfactant of the same type as the ionic characteristics of the surfactant coating the magnetic substance of the magnetic fluid, the magnetic field directly acts on the magnetic fluid and the channel resistance is also reduced. It was composed.
また、磁性体には飽和磁化の温度依存性が高いマンガンと亜鉛と酸化鉄との合金を採用し、その合金の平均粒径を約１０ｎｍ、好ましくは６ｎｍ、更に好ましくは１ｎｍとすることにより、残留磁化を極小に抑えた効率の良い磁性対流熱循環ポンプを実現した。 Further, by adopting an alloy of manganese, zinc and iron oxide, which has a high temperature dependence of saturation magnetization, as the magnetic material, and making the average particle size of the alloy about 10 nm, preferably 6 nm, more preferably 1 nm, We have realized an efficient magnetic convection heat circulation pump with minimal residual magnetization.
更には、受熱部とマグネチックポンプは熱伝導率の異なる素材で形成し、相互に磁場流路を共有する構成を採用した。 Further, the heat receiving part and the magnetic pump are made of materials having different thermal conductivities, and the magnetic field flow paths are shared by each other.
本発明による磁性対流熱循環ポンプの１実施例を、図１から図６を参照して以下に説明する。 One embodiment of the magnetic convection heat circulation pump according to the present invention will be described below with reference to FIGS. 1 to 6.
図１では、受熱部（１）と放熱部（２）とを循環する循環流路（３）が配置されており、循環流路（３）内に伸長方向と平行に磁石Ｎ極（４）とＳ極（５）を配置した例を示している。循環流路（３）には磁性流体が充填されており、受熱部（１）に熱入力があると、受熱部（１）の磁性流体の温度が上昇し、受熱部（１）と放熱部（２）に保持された磁性流体との間に温度勾配が生じ、磁化力の低下した受熱部（１）側の磁性流体が放熱部（２）側の磁性流体に押し出されることにより、磁性対流が生じて熱を伝達する例を示した。 In FIG. 1, a circulation channel (3) that circulates the heat receiving section (1) and the heat radiating section (2) is arranged, and the magnet N pole (4) is arranged in the circulation channel (3) in parallel with the extension direction. And an S pole (5) are arranged. The circulation flow path (3) is filled with magnetic fluid, and when heat is input to the heat receiving part (1), the temperature of the magnetic fluid in the heat receiving part (1) rises, and the heat receiving part (1) and the heat radiating part A temperature gradient is generated between the magnetic fluid held in (2) and the magnetic fluid on the heat receiving portion (1) side having a reduced magnetizing force is pushed out to the magnetic fluid on the heat radiating portion (2) side, thereby causing magnetic convection. An example has been shown in which heat is generated by heat transfer.
このような循環を生じる構成では、磁石の磁力が直接的に磁性流体に伝わるので効率が良い上に、電子機器などの放熱に利用しても漏れ磁束による影響が著しく軽減される。 In such a configuration that causes the circulation, the magnetic force of the magnet is directly transmitted to the magnetic fluid, so that the efficiency is high and the influence of the leakage magnetic flux is remarkably reduced even when the magnetic force is used for heat dissipation of an electronic device or the like.
本発明の磁性流体は、磁性を有する粒体を磁性体として、適当な分散媒に分散したものであれば用いることができる。磁性を有する粒体は、好ましくは３０ｎｍ未満、更に好ましくは１ｎｍから１０ｎｍの平均粒径を有する粉体として用いられる。 The magnetic fluid of the present invention can be used as long as it has magnetic particles as a magnetic material and is dispersed in an appropriate dispersion medium. The magnetic particles are preferably used as a powder having an average particle size of less than 30 nm, more preferably 1 nm to 10 nm.
本発明に用いる磁性体は温度依存性の高い合金が好ましく、二価遷移金属と酸化鉄の合金が特に好ましい。 The magnetic material used in the present invention is preferably an alloy having high temperature dependence, and particularly preferably an alloy of a divalent transition metal and iron oxide.
また、磁性体は界面活性剤で被覆（コーティング）されていることが好ましい。被覆に用いる界面活性剤は、陽イオン界面活性剤、陰イオン界面活性剤といったイオン特性を有する界面活性剤を用いることが好ましい。これら界面活性剤の反発力により、磁性体は分散媒中に均一に分布する構成とした。その結果、残留磁化を小さくして大幅に流路抵抗を軽減することができる。 Further, the magnetic substance is preferably coated with a surfactant. As the surfactant used for coating, it is preferable to use a surfactant having ionic characteristics such as a cationic surfactant and an anionic surfactant. Due to the repulsive force of these surfactants, the magnetic substance is uniformly distributed in the dispersion medium. As a result, the residual magnetization can be reduced and the flow path resistance can be significantly reduced.
更に好ましくは、循環流路又は前記循環流路に配置される磁石の磁性流体と接する面の一部若しくは全部を、磁性体をコーティングしている界面活性剤のイオン特性と同種の界面活性剤でコーティングすることにより、残留磁化の影響を更に小さくし、更に流路抵抗を軽減することが可能となる。 More preferably, a part or all of the surface of the circulation channel or the magnet arranged in the circulation channel, which is in contact with the magnetic fluid, is made of a surfactant having the same ionic characteristics as that of the surfactant coating the magnetic material. By coating, the influence of remanent magnetization can be further reduced, and the flow path resistance can be further reduced.
更に、温度依存性の高い合金を磁性体として採用したことにより、飽和磁化値の温度による大きな変化が磁場において大きな動力となり、磁性対流のポンプとしての効率を大幅に向上せしめた。本実施例ではマンガンと亜鉛と酸化鉄との合金（１／２Ｚｎ１／２ＭｎＦｅ２Ｏ４）を用いたが、本発明で使用できる磁性体はこれに限定されるものではなく、磁性体の飽和磁化の温度依存性が１／２Ｚｎ１／２ＭｎＦｅ２Ｏ４と同等か若しくは強磁性を示し、より大きな温度依存性を有する二価遷移金属と酸化鉄の合金等が好ましい。Furthermore, by adopting an alloy with a high temperature dependence as the magnetic material, a large change in the saturation magnetization value with temperature becomes a large force in the magnetic field, and the efficiency as a magnetic convection pump is greatly improved. Although an alloy of manganese, zinc, and iron oxide (1/2Zn1/2MnFe 2 O 4 ) was used in this example, the magnetic material usable in the present invention is not limited to this, and the saturation magnetization of the magnetic material is used. It is preferable to use an alloy of a divalent transition metal and iron oxide, which has the same temperature dependency as 1/2Zn1/2MnFe 2 O 4 or exhibits ferromagnetism and has a larger temperature dependency.
また、本発明の磁性流体として磁性イオン液体を用いることも出来る。磁性イオン液体は典型的な磁性陰イオンの塩化鉄酸イオンと陽イオンの１ブチル３メチルイミダゾリウムなどを組み合わせることが好ましい。 A magnetic ionic liquid can also be used as the magnetic fluid of the present invention. The magnetic ionic liquid is preferably a combination of a typical magnetic anion such as ferric chloride ion and a cation such as 1-butyl-3-methylimidazolium.
図２から図４は、実施例１〜３の磁石の配置について示した。図２は、受熱部側に磁力の強い磁石（４）（５）を配置し、放熱側には磁力の弱い磁石２（４ｂ）（５ｂ）を配置して磁場の勾配をつけた例を示した。図３では、循環流路内に磁石が対峙する形で配置した例を示した。図４では、更に循環流路（３）内の磁石が受熱部（１）側で狭くなるようにハの字型に配置した例を示した。このようにして磁場の強いところを受熱部側に作ることにより、温度が低く磁化力の強い磁性体が磁場の強いところに移動しやすい構成とした。 2 to 4 show the arrangement of the magnets of Examples 1 to 3. FIG. 2 shows an example in which magnets (4) and (5) having a strong magnetic force are arranged on the heat receiving part side and magnets 2 (4b) and (5b) having a weak magnetic force are arranged on the heat radiating side to give a gradient of the magnetic field. It was In FIG. 3, an example is shown in which the magnets are arranged so as to face each other in the circulation channel. FIG. 4 shows an example in which the magnets in the circulation channel (3) are arranged in a V shape so that the magnets are narrower on the heat receiving portion (1) side. In this way, the magnetic field having a strong magnetic field is formed on the heat receiving portion side, so that the magnetic body having a low temperature and a strong magnetizing force is easily moved to the strong magnetic field.
図５では、強磁性体（１０）が、例えば鉄などをコの字型に成型して、対峙する面に磁石を配置して磁気回路を構成した磁石の例を示した。この構成では漏れ磁束が非常に小さく、対峙する磁石Ｎ極（４）と磁石Ｓ極（５）の間の磁力が強くなる。 FIG. 5 shows an example of the ferromagnetic body (10) in which, for example, iron or the like is molded into a U-shape and the magnets are arranged on the facing surfaces to form a magnetic circuit. In this structure, the leakage magnetic flux is very small, and the magnetic force between the magnet N pole (4) and the magnet S pole (5) facing each other becomes strong.
更に、図６では、複数の循環路を構成して、図１に示した構成よりも少ない磁性流体の量で効率よく循環する磁性熱ポンプの構成を示した。図６によれば、磁場流路（６）は第１流路（７）の循環流路内の受熱部（１）に配置された磁石（４）（５）の磁力線に沿うように形成されているが、第２流路（８）、第３流路（９）の経路内に配置してもよく、また、磁石（４）（５）の両側の磁束に沿うように磁場流路（６）を形成しても良い。 Further, FIG. 6 shows the configuration of a magnetic heat pump that has a plurality of circulation paths and efficiently circulates with a smaller amount of magnetic fluid than the configuration shown in FIG. According to FIG. 6, the magnetic field flow path (6) is formed along the magnetic field lines of the magnets (4) (5) arranged in the heat receiving part (1) in the circulation flow path of the first flow path (7). However, they may be arranged in the paths of the second flow path (8) and the third flow path (9), and the magnetic field flow path (that is along the magnetic flux on both sides of the magnets (4) and (5) ( 6) may be formed.
実施例２は、図７を参照して説明する。受熱部（１）と放熱部（２）は、循環流路（３）で接続された構成を採用した。受熱部（１）と放熱部（２）は、循環流路（３）の構成材をフレキシブルパイプや樹脂パイプなど柔軟性に富んだもので構成すると、直線的な配置に限られず任意の位置に配置することが可能となる。 Example 2 will be described with reference to FIG. 7. The heat receiving part (1) and the heat radiating part (2) are connected by a circulation flow path (3). When the heat receiving part (1) and the heat radiating part (2) are made of flexible material such as flexible pipe or resin pipe as the constituent material of the circulation flow path (3), they are not limited to the linear arrangement but can be arranged at arbitrary positions. It becomes possible to arrange.
実施例３は、図８を参照して説明する。磁性対流熱循環ポンプは、受熱部（１）と放熱部（２）を接続する配管（１２）内にリング状の磁石（４ａ）（５ａ）を配置した構成とした。このような構成を採用すれば、受熱部（１）放熱部（２）が一つの共用部品で済むほかに、接合部（１１）が磁力による接合で液漏れすることなく簡単に脱着することが実現でき、磁性流体の充填等においても簡便である。 The third embodiment will be described with reference to FIG. The magnetic convection heat circulation pump has a configuration in which ring-shaped magnets (4a) and (5a) are arranged in a pipe (12) connecting the heat receiving part (1) and the heat radiating part (2). If such a configuration is adopted, not only the heat receiving part (1) and the heat radiating part (2) need to be one common part, but also the joint part (11) can be easily attached/detached without liquid leakage due to the magnetic force. It can be realized and it is easy to fill the magnetic fluid.
上述された各実施例において配置される磁石の固定方法は特に限定されるものではなく、ガイド溝などへの嵌め合わせにより移動可能に固定する方法や、接着などにより固着して固定する方法等であっても良い。 The method of fixing the magnets arranged in each of the above-described embodiments is not particularly limited, and may be a method of movably fixing by fitting into a guide groove or the like, a method of fixing by fixing by adhesion or the like. It may be.
同様に受熱部（１）や放熱部（２）の構成材は、銅やアルミニウム、グラファイト等の熱伝導率の高い素材を使用することが好ましく、更に透磁率の低い素材であることがより好ましい。 Similarly, the heat receiving part (1) and the heat radiating part (2) are preferably made of a material having a high thermal conductivity such as copper, aluminum or graphite, and more preferably a material having a low magnetic permeability. ..
実施例４は、図９〜１１を参照して以下に説明する。なお、本実施例では、磁場流路（６）と磁石（１３）とで構成された部分をマグネチックポンプ（１４）と呼んでいる。その実施例として図９では、磁性流体の逆流を防ぐ為に受熱部（１）側の磁場流路（６）の端部の幅を段階的に狭くなるように構成し、磁場流路（６）を共有するように異なる熱伝導率を有する素材で構成された受熱部（１）とマグネチックポンプ（１４）とが熱的に接続された磁性対流熱循環ポンプを示した。そして、その磁場流路（６）内には、磁石（１３）が設置されて一体に形成されている。 Example 4 will be described below with reference to FIGS. In this embodiment, the portion constituted by the magnetic field flow path (6) and the magnet (13) is called a magnetic pump (14). As an example thereof, in FIG. 9, the width of the end portion of the magnetic field flow path (6) on the heat receiving portion (1) side is gradually reduced in order to prevent backflow of the magnetic fluid. The magnetic convection heat circulation pump in which the heat receiving portion (1) and the magnetic pump (14), which are made of materials having different thermal conductivities so as to share the same), are thermally connected is shown. A magnet (13) is installed and integrally formed in the magnetic field flow path (6).
また、受熱部（１）の磁場流路（６）と循環流路（３）はフッ素系の樹脂、例えばＰＦＡなどで構成された接続用循環流路（３）を介して放熱部（２）と接続されており、受熱部（１）に熱入力があると、磁場流路（６）の一部は直接的に熱入力される。しかしながら、マグネチックポンプ（１４）には熱は間接的に伝わる上に、受熱部と比較して熱伝導率が小さな素材で構成されているため、受熱部（１）と比較して伝わる熱量は小さく、その結果、磁場流路（６）内に大きな温度勾配が生じて、温度の高くなり飽和磁化値が低くなった磁性流体が温度の低い飽和磁化値の大きな磁性流体に押しやられることにより循環が開始される。例えば、このような循環を引き起こすためには、アルミニウムと樹脂素材のような熱伝導率の差があればよい。そして、磁性流体の循環が始まると、生じた圧力により、マグネチックポンプ（１４）内に熱入力されていない磁性流体が放熱部（２）側より流れ込むため、更に温度差が大きくなり、この結果、循環スピードが速くなり、より多くの熱を移送することができる。 Further, the magnetic field flow path (6) and the circulation flow path (3) of the heat receiving section (1) are radiated through the connection circulation flow path (3) made of a fluorine resin such as PFA. When there is heat input to the heat receiving part (1), part of the magnetic field flow path (6) is directly input with heat. However, since the heat is indirectly transmitted to the magnetic pump (14) and is made of a material whose thermal conductivity is smaller than that of the heat receiving portion, the amount of heat transmitted compared to the heat receiving portion (1) is It is small, and as a result, a large temperature gradient is generated in the magnetic field flow path (6), and the magnetic fluid having a high temperature and a low saturation magnetization value is urged by the magnetic fluid having a low saturation magnetization value to circulate. Is started. For example, in order to cause such circulation, it suffices that there is a difference in thermal conductivity between aluminum and a resin material. Then, when the circulation of the magnetic fluid starts, the generated pressure causes the magnetic fluid that has not been heat input into the magnetic pump (14) to flow from the heat radiating portion (2) side, resulting in a larger temperature difference. , The circulation speed becomes faster, and more heat can be transferred.
本実施例では磁石（１３）の着磁方向は特に示していないが、幅方向でも長手方向でも何れでも良い。例えば、長手方向に着磁した磁石を使用した場合の温度差の生じる場所は、熱入力が大きいときにはマグネチックポンプ（１４）の放熱部（２）からの磁場の強いところへ移動し、熱入力が小さいときには磁場の弱い磁石（１３）中央部近傍へ移動することから、適宜用途に合った磁石（１３）を採用しても発熱体の温度を一定に保つような構成を実現できる。 In this embodiment, the magnetizing direction of the magnet (13) is not particularly shown, but it may be either the width direction or the longitudinal direction. For example, where a temperature difference occurs when a magnet magnetized in the longitudinal direction is used, when the heat input is large, it moves to a place where the magnetic field from the heat dissipation part (2) of the magnetic pump (14) is strong and the heat input When the value is small, the magnet moves to the vicinity of the central portion of the magnet (13) having a weak magnetic field. Therefore, even if the magnet (13) suitable for the application is adopted, it is possible to realize a configuration in which the temperature of the heating element is kept constant.
また、図示しないが、流路のせん断応力の軽減や磁性流体の凝集を防ぐために、循環流路の磁性流体が接する面の一部若しくは全部は、例えば旭硝子社製の撥油性と撥水性を有する製品名サイトップのような撥油性を有するコーティング材でコートするか、若しくは磁性流体のイオン特性と同種の界面活性剤、すなわち、磁性流体がカチオン系の界面活性剤でコートされている場合は、これと同じカチオン系の界面活性剤でコートするのが好ましい。 Although not shown, part or all of the surface of the circulation channel in contact with the magnetic fluid has, for example, oil repellency and water repellency manufactured by Asahi Glass Co., Ltd. in order to reduce shear stress in the channel and prevent aggregation of the magnetic fluid. Product name Cytop coated with an oil-repellent coating material, or a surfactant of the same type as the ionic properties of the magnetic fluid, that is, if the magnetic fluid is coated with a cationic surfactant, It is preferable to coat with the same cationic surfactant.
本実施例では、磁場流路（６）を受熱部（１）とマグネチックポンプ（１４）とで共有する例を示したが、受熱部（１）とマグネチックポンプ（１４）を熱伝導率の良い金属などで熱的に接続しても良く、その場合は磁場流路（６）を共有しなくとも良い。 In the present embodiment, an example in which the magnetic field flow path (6) is shared by the heat receiving part (1) and the magnetic pump (14) is shown, but the heat receiving part (1) and the magnetic pump (14) have thermal conductivity. It may be thermally connected with a good metal or the like, and in that case, the magnetic field flow path (6) may not be shared.
更に、図１０では、受熱部（１）とマグネチックポンプ（１４）とが同じ熱伝導率を有する素材で構成された場合の構成を示した。受熱部（１）からの熱入力に対して、マグネチックポンプ（１４）を形成している素材の厚みを受熱部（１）よりも薄くすることにより、熱伝達率が小さくなり、熱伝導率の異なる素材を採用した場合と同様の効果を得ることができる。 Further, FIG. 10 shows a configuration in which the heat receiving portion (1) and the magnetic pump (14) are made of materials having the same thermal conductivity. By making the thickness of the material forming the magnetic pump (14) thinner than that of the heat receiving part (1) with respect to the heat input from the heat receiving part (1), the heat transfer coefficient becomes small and the heat conductivity becomes high. It is possible to obtain the same effect as when different materials are used.
また、図１１では、磁気回路を構成した１例を示した。磁石（１３）はＮ極とＳ極が対峙するように配置され、ヨーク（１５）により固定されている。このように構成すると非常に強い磁場を得ることができるのみならず、磁場流路（６）はＮ極とＳ極が対峙する面の間に位置するようになるため、流体の流動を妨げる障害が無くなり、ポンプの性能が向上する。更には、マグネチックヒートポンプからの漏れ磁束を著しく軽減することが可能となる。 Further, FIG. 11 shows an example in which a magnetic circuit is configured. The magnet (13) is arranged so that the N pole and the S pole face each other, and is fixed by the yoke (15). With this structure, not only a very strong magnetic field can be obtained, but also the magnetic field flow path (6) is located between the surfaces where the N pole and the S pole face each other, which is an obstacle to the fluid flow. Is eliminated and the pump performance is improved. Furthermore, it becomes possible to remarkably reduce the leakage magnetic flux from the magnetic heat pump.
本発明によれば、本発明のマグネチックヒートポンプは単位面積あたりの熱移送能力が大きく、また、受熱部と放熱部をフレキシブルな樹脂パイプで接続することにより自由な配置が可能であり、更にはポンプ部の構成を非常に小さくすることができる。このため、電子機器の小型化が進み、電子部品の消費電力密度が高くなることから、狭い空間から熱をなるべく外気に触れるところに移送して放熱する必要性があるＣＰＵなどの電子部品、レーザーダイオードなどの光学素子の熱移送及び放熱用途に利用できる。 According to the present invention, the magnetic heat pump of the present invention has a large heat transfer capacity per unit area, and can be freely arranged by connecting the heat receiving portion and the heat radiating portion with a flexible resin pipe. The configuration of the pump unit can be made very small. For this reason, electronic devices are becoming smaller, and the power consumption density of electronic components is increasing. Therefore, it is necessary to transfer heat from a narrow space to a place in contact with the outside air as much as possible, and to radiate heat. It can be used for heat transfer and heat dissipation of optical elements such as diodes.
また、本発明によれば、本発明のマグネチックヒートポンプは電気を使用しないため、無人の施設などの加熱防止対策や、寒冷地における太陽熱の室内への導入用途、排熱を再利用する際の熱移送など多様な用途へ適用できる。 Further, according to the present invention, since the magnetic heat pump of the present invention does not use electricity, heating prevention measures for unmanned facilities and the like, introduction of solar heat into the room in cold regions, and reuse of exhaust heat It can be applied to various purposes such as heat transfer.
更に、本発明によれば、本発明のマグネチックヒートポンプに使用される磁性流体は揮発性に乏しいため、宇宙などの過酷な条件下でも熱移送が可能であり、宇宙ステーションなどの太陽熱回収手段や人工衛星内の熱移送手段としても利用できる。 Furthermore, according to the present invention, since the magnetic fluid used in the magnetic heat pump of the present invention is poor in volatility, it is possible to transfer heat even under severe conditions such as space, and solar heat recovery means such as a space station or It can also be used as a heat transfer means in an artificial satellite.
Claims (10)
前記受熱部と熱的に接続されたマグネチックポンプと、
放熱部と、そして
前記受熱部及びマグネチックポンプ、放熱部を流体連通に接続する循環流路を有する熱循環ポンプであって、
前記マグネチックポンプの循環流路は、前記循環流路内に永久磁石を配置するか、または前記永久磁石で循環流路の内壁面の一部を形成することにより磁場流路の一部を形成した構造であり、前記循環流路内を流れる循環作動液として磁性流体を用いたことを特徴とする磁性対流熱循環ポンプ。Heat receiving part,
A magnetic pump thermally connected to the heat receiving part,
A heat circulating pump having a heat radiating portion, and the heat receiving portion, a magnetic pump, and a circulation flow path connecting the heat radiating portion in fluid communication,
The circulation channel of the magnetic pump forms a part of the magnetic field channel by disposing a permanent magnet in the circulation channel or by forming a part of the inner wall surface of the circulation channel with the permanent magnet. A magnetic convection heat circulation pump having the above-mentioned structure, wherein a magnetic fluid is used as a circulating working fluid flowing in the circulation flow path.
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| JP2004350757 | 2004-12-03 | ||
| JP2004350757 | 2004-12-03 | ||
| PCT/JP2005/021956 WO2006059622A1 (en) | 2004-12-03 | 2005-11-30 | Magnetic convection heat circulation pump |
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| JPWO2006059622A1 true JPWO2006059622A1 (en) | 2008-06-05 |
| JP4507207B2 JP4507207B2 (en) | 2010-07-21 |
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| US (1) | US20080264068A1 (en) |
| EP (1) | EP1832828B1 (en) |
| JP (1) | JP4507207B2 (en) |
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Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITBO20040420A1 (en) * | 2004-07-07 | 2004-10-07 | Type S R L | METAL CUTTING AND FORMING MACHINE |
| ITBO20050481A1 (en) | 2005-07-19 | 2007-01-20 | Silicon Biosystems S R L | METHOD AND APPARATUS FOR THE HANDLING AND / OR IDENTIFICATION OF PARTICLES |
| ITBO20050643A1 (en) * | 2005-10-24 | 2007-04-25 | Si Bio S R L | METHOD AND APPARATUS FOR HANDLING PARTICLES IN CONDUCTIVE SOLUTIONS |
| ITBO20050646A1 (en) * | 2005-10-26 | 2007-04-27 | Silicon Biosystem S R L | METHOD AND APPARATUS FOR CHARACTERIZATION AND COUNTING OF PARTICLES |
| ITTO20060226A1 (en) | 2006-03-27 | 2007-09-28 | Silicon Biosystem S P A | METHOD AND APPARATUS FOR PROCESSING AND OR ANALYSIS AND OR SELECTION OF PARTICLES, IN PARTICULAR BIOLOGICAL PARTICLES |
| ITTO20070771A1 (en) | 2007-10-29 | 2009-04-30 | Silicon Biosystems Spa | METHOD AND APPARATUS FOR IDENTIFICATION AND HANDLING OF PARTICLES |
| US10895575B2 (en) | 2008-11-04 | 2021-01-19 | Menarini Silicon Biosystems S.P.A. | Method for identification, selection and analysis of tumour cells |
| IT1391619B1 (en) | 2008-11-04 | 2012-01-11 | Silicon Biosystems Spa | METHOD FOR THE IDENTIFICATION, SELECTION AND ANALYSIS OF TUMOR CELLS |
| DE102008058799B4 (en) * | 2008-11-24 | 2012-04-26 | Siemens Aktiengesellschaft | Method for operating a multi-stage compressor |
| CA2782123C (en) | 2009-03-17 | 2017-05-02 | Silicon Biosystems S.P.A. | Microfluidic device for isolation of cells |
| IT1403518B1 (en) | 2010-12-22 | 2013-10-31 | Silicon Biosystems Spa | MICROFLUID DEVICE FOR PARTICLE HANDLING |
| CN102128437B (en) * | 2011-02-07 | 2012-10-03 | 林智勇 | LED (light-emitting diode) magnetic fluid radiating device |
| CN102128436B (en) * | 2011-02-07 | 2012-07-04 | 林智勇 | Magnetic fluid LED radiating device |
| US8503494B2 (en) | 2011-04-05 | 2013-08-06 | Microsoft Corporation | Thermal management system |
| ITTO20110990A1 (en) | 2011-10-28 | 2013-04-29 | Silicon Biosystems Spa | METHOD AND APPARATUS FOR OPTICAL ANALYSIS OF LOW TEMPERATURE PARTICLES |
| ITBO20110766A1 (en) | 2011-12-28 | 2013-06-29 | Silicon Biosystems Spa | DEVICES, EQUIPMENT, KITS AND METHOD FOR THE TREATMENT OF A BIOLOGICAL SAMPLE |
| US20150267966A1 (en) * | 2014-03-18 | 2015-09-24 | Metal Industries Research & Development Centre | Adaptable heat exchanger and fabrication method thereof |
| US20190214173A1 (en) * | 2016-08-04 | 2019-07-11 | Nanyang Technological University | An apparatus for transferring heat from a heat source to a heat sink |
| JP6517768B2 (en) * | 2016-10-07 | 2019-05-22 | トヨタ自動車株式会社 | Magnetic fluid driving device and magnetic fluid driving method |
| JP7205970B2 (en) * | 2018-12-27 | 2023-01-17 | 川崎重工業株式会社 | Heat transport system and transportation |
| JP2022088691A (en) * | 2019-04-12 | 2022-06-15 | パナソニックＩｐマネジメント株式会社 | Magnetic fluid drive device and heat transport system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0415489A (en) * | 1990-05-10 | 1992-01-20 | Katsuto Nakatsuka | Working medium for heat pipe |
| JP3078605U (en) * | 2000-12-27 | 2001-07-10 | 敬之 住友 | Pipe fitting and faucet-mounted shower device |
| JP2003240467A (en) * | 2002-02-15 | 2003-08-27 | Showa Denko Kk | Magnetic fluid drive device |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3051988A (en) * | 1957-02-09 | 1962-09-04 | Baermann Max | Material with permanent magnetic properties |
| US4078392A (en) * | 1976-12-29 | 1978-03-14 | Borg-Warner Corporation | Direct contact heat transfer system using magnetic fluids |
| JPS61143690A (en) * | 1984-12-17 | 1986-07-01 | Sumitomo Electric Ind Ltd | Heat pipe |
| US5603983A (en) * | 1986-03-24 | 1997-02-18 | Ensci Inc | Process for the production of conductive and magnetic transitin metal oxide coated three dimensional substrates |
| FR2660919B2 (en) * | 1989-10-13 | 1995-07-28 | Mercier Dominique | METHOD AND DEVICE FOR MAGNETIC TREATMENT OF FLUID. |
| JPH0378605U (en) * | 1989-12-05 | 1991-08-09 | ||
| US4970866A (en) * | 1989-12-07 | 1990-11-20 | Sundstrand Corporation | Magneto caloric system |
| US5381664A (en) * | 1990-09-28 | 1995-01-17 | The United States Of America, As Represented By The Secretary Of Commerce | Nanocomposite material for magnetic refrigeration and superparamagnetic systems using the same |
| US5357756A (en) * | 1993-09-23 | 1994-10-25 | Martin Marietta Energy Systems, Inc. | Bipolar pulse field for magnetic refrigeration |
| US5441102A (en) * | 1994-01-26 | 1995-08-15 | Sun Microsystems, Inc. | Heat exchanger for electronic equipment |
| US5444983A (en) * | 1994-02-28 | 1995-08-29 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Magnetic heat pump flow director |
| US5705018A (en) * | 1995-12-13 | 1998-01-06 | Hartley; Frank T. | Micromachined peristaltic pump |
| US5763951A (en) * | 1996-07-22 | 1998-06-09 | Northrop Grumman Corporation | Non-mechanical magnetic pump for liquid cooling |
| JPH11183066A (en) * | 1997-12-24 | 1999-07-06 | Toshiba Corp | Heat pipe apparatus for heat transport |
| JP2003006833A (en) * | 2001-06-26 | 2003-01-10 | Fuji Photo Film Co Ltd | Magnetic tape |
| US7074175B2 (en) * | 2001-07-25 | 2006-07-11 | Erik Schroeder Handy | Thermotherapy via targeted delivery of nanoscale magnetic particles |
| JP2004274942A (en) * | 2003-03-11 | 2004-09-30 | Ind Technol Res Inst | Device and method for magnetic-current power generation and cooling |
| US7423874B2 (en) * | 2005-09-06 | 2008-09-09 | Sun Microsystems, Inc. | Magneto-hydrodynamic heat sink |
-
2005
- 2005-11-30 WO PCT/JP2005/021956 patent/WO2006059622A1/en active Application Filing
- 2005-11-30 JP JP2006547961A patent/JP4507207B2/en not_active Expired - Fee Related
- 2005-11-30 EP EP05811624A patent/EP1832828B1/en not_active Not-in-force
- 2005-11-30 US US11/792,100 patent/US20080264068A1/en not_active Abandoned
- 2005-11-30 AT AT05811624T patent/ATE523747T1/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0415489A (en) * | 1990-05-10 | 1992-01-20 | Katsuto Nakatsuka | Working medium for heat pipe |
| JP3078605U (en) * | 2000-12-27 | 2001-07-10 | 敬之 住友 | Pipe fitting and faucet-mounted shower device |
| JP2003240467A (en) * | 2002-02-15 | 2003-08-27 | Showa Denko Kk | Magnetic fluid drive device |
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| WO2006059622A1 (en) | 2006-06-08 |
| EP1832828A4 (en) | 2010-08-04 |
| US20080264068A1 (en) | 2008-10-30 |
| EP1832828B1 (en) | 2011-09-07 |
| ATE523747T1 (en) | 2011-09-15 |
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| EP1832828A1 (en) | 2007-09-12 |
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