JPH0716309B2 - Magnetic fluid heat engine - Google Patents
Magnetic fluid heat engineInfo
- Publication number
- JPH0716309B2 JPH0716309B2 JP63257027A JP25702788A JPH0716309B2 JP H0716309 B2 JPH0716309 B2 JP H0716309B2 JP 63257027 A JP63257027 A JP 63257027A JP 25702788 A JP25702788 A JP 25702788A JP H0716309 B2 JPH0716309 B2 JP H0716309B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic fluid
- magnetic
- heat exchanger
- cooling
- closed circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000011553 magnetic fluid Substances 0.000 title claims description 92
- 238000010438 heat treatment Methods 0.000 claims description 38
- 238000001816 cooling Methods 0.000 claims description 31
- 239000000126 substance Substances 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims description 2
- 230000005415 magnetization Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- WJZHMLNIAZSFDO-UHFFFAOYSA-N manganese zinc Chemical compound [Mn].[Zn] WJZHMLNIAZSFDO-UHFFFAOYSA-N 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004899 motility Effects 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は、磁性流体機関に関するものである。さらに
詳しくは、この発明は、磁性流体を作業物質とし、これ
を閉回路パイプ内に充填して加熱・冷却するとともに、
その加熱・冷却間に磁界をかけて磁性流体を作動させる
熱機関（以下磁性流体熱機関という）に関するものであ
り、この熱機関は、熱源の乏しい場所、たとえば宇宙
船、深海船等でのヒートポンプや冷却機などの駆動源と
して有用なものである。TECHNICAL FIELD The present invention relates to a magnetic fluid engine. More specifically, the present invention uses a magnetic fluid as a working substance, and fills the magnetic fluid in a closed circuit pipe to heat and cool it.
The present invention relates to a heat engine that operates a magnetic fluid by applying a magnetic field between its heating and cooling (hereinafter referred to as a magnetic fluid heat engine). This heat engine is a heat pump in a place with a poor heat source, such as a spacecraft or a deep-sea vessel. It is also useful as a drive source for machines and coolers.
（従来の技術とその課題） 磁性流体熱機関の概念は、1964年ローゼンスワイクらに
より提案され、その後、磁性流体が運動することが実験
的に確認された。(Prior art and its problems) The concept of a magnetic fluid heat engine was proposed by Rosenswijk et al. In 1964, and then it was experimentally confirmed that the magnetic fluid moves.
その磁性流体熱機関は、第３図に示したように、磁性流
体（１）が流れる閉回路パイプ（２）の外周に、冷水が
流れるジャケット構造の冷却装置（７）及び熱水が流れ
るジャケット構造の加熱装置（８）がそれぞれ設けら
れ、それらの冷却装置（７）と加熱装置（８）との間に
２個の永久磁石（５）が、異極を対向させ、かつパイプ
（２）に対して直角方向に磁界がかかるように配置した
ものであった。As shown in FIG. 3, the magnetic fluid heat engine includes a cooling device (7) having a jacket structure in which cold water flows and a jacket in which hot water flows, around the closed circuit pipe (2) through which the magnetic fluid (1) flows. Structure heating devices (8) are provided respectively, two permanent magnets (5) between the cooling device (7) and the heating device (8) with opposite poles facing each other and the pipe (2). It was arranged so that a magnetic field would be applied in a direction perpendicular to.
磁性流体（１）の磁化の大きさ（Ｍ）は、第３図中に示
したように、一般に、温度（Ｔ）に依存し、温度が高く
なるとともに減少する。この変化の様子は、磁性流体
（１）の種類によって様々であり、たとえばMn−Znフェ
ライト微粒子で構成された磁性流体（１）の場合には、
100℃位の余り高くない温度で顕著な変化を示す。磁性
流体（１）に磁界（Ｈ）をかけた時に、磁性流体（１）
にはその磁界に引き寄せられる力が働くが、この時の磁
性流体（１）が磁界（Ｈ）に引き寄せられる力としての
圧力（Ｐ）は、次式に示され、磁化の大きさ（Ｍ）に比
例する。The magnitude (M) of magnetization of the magnetic fluid (1) generally depends on the temperature (T) and decreases as the temperature rises, as shown in FIG. The state of this change varies depending on the type of the magnetic fluid (1). For example, in the case of the magnetic fluid (1) composed of Mn-Zn ferrite fine particles,
It shows a remarkable change at a temperature not too high around 100 ° C. When a magnetic field (H) is applied to the magnetic fluid (1), the magnetic fluid (1)
Is applied to the magnetic field, the pressure (P) as the force that the magnetic fluid (1) is drawn to the magnetic field (H) at this time is expressed by the following equation, and the magnitude of magnetization (M) Proportional to.
すなわち、温度が低く、磁化（Ｍ）の大きな状態では、
磁性流体（１）は強く磁界の中に引き込まれ、一方、温
度が高く、磁化（Ｍ）小さな状態においては、磁界中へ
の引込は弱くなる。このため、第３図に示した磁界の左
部分の磁性流体（１）と右部分の磁性流体（１）との間
に正味の圧力差が発生することとなる。この圧力差によ
って、磁性流体（１）は、低温側から高温側へと磁界を
横切って移動することとなる。 That is, when the temperature is low and the magnetization (M) is large,
The magnetic fluid (1) is strongly attracted into the magnetic field, while in the high temperature and small magnetization (M) state, the attraction into the magnetic field is weak. For this reason, a net pressure difference is generated between the magnetic fluid (1) in the left part and the magnetic fluid (1) in the right part of the magnetic field shown in FIG. This pressure difference causes the magnetic fluid (1) to move across the magnetic field from the low temperature side to the high temperature side.
しかしながら、上記の熱機関の場合には、磁性流体
（１）の運動が緩慢であるという問題がある。このた
め、得られる運動エネルギーはきわめて小さく、たとえ
ば閉回路パイプ（２）に羽根車を置いてもそれを回転さ
せることはできず、回転運動エルギーを外に取り出すこ
とができなかった。However, in the case of the above heat engine, there is a problem that the motion of the magnetic fluid (1) is slow. For this reason, the obtained kinetic energy is extremely small, and even if the impeller is placed in the closed circuit pipe (2), it cannot be rotated, and the rotational kinetic energy cannot be taken out.
この発明の発明者らは、この問題点を改善すべく、磁性
流体の流動特性について鋭意研究を行い、以下の改善策
を究明した。すなわち無磁界中で磁性流体が流れると
き、磁性流体は等方的な粘性すなわち流動抵抗を示す
が、磁界中を磁性流体が流れるとき、磁性流体は異方的
な粘性を示し、磁性流体の流れの方向が磁界の向きと直
角のときは大きい粘性、すなわち大きい流動抵抗を示
し、一方磁性流体の流れの方向が磁界の向きと平行のと
きは相対的に小さい粘性、すなわち小さい流動抵抗を示
す。しかるに第３図に示す従来型の磁性流体熱機関では
磁界は磁性流体の流れの向きに直角に作用している。し
たがってこの配置では磁性流体の運動エネルギーは磁性
流体の流動抵抗により消費され、有効に取り出し得る正
味の運動エネルギーは小さくなり、熱機関としての効率
も高くない。In order to improve this problem, the inventors of the present invention have earnestly studied the flow characteristics of magnetic fluids and have made the following improvement measures. That is, when the magnetic fluid flows in a non-magnetic field, the magnetic fluid exhibits isotropic viscosity, that is, flow resistance, but when the magnetic fluid flows in the magnetic field, the magnetic fluid exhibits anisotropic viscosity and the flow of the magnetic fluid. When the direction of is perpendicular to the direction of the magnetic field, it exhibits a large viscosity, that is, large flow resistance, while when the direction of the flow of the magnetic fluid is parallel to the direction of the magnetic field, it exhibits a relatively small viscosity, that is, a small flow resistance. However, in the conventional magnetic fluid heat engine shown in FIG. 3, the magnetic field acts at right angles to the direction of the magnetic fluid flow. Therefore, in this arrangement, the kinetic energy of the magnetic fluid is consumed by the flow resistance of the magnetic fluid, the net kinetic energy that can be effectively taken out is small, and the efficiency as a heat engine is not high.
そこで発明者は先に第４図に示したような熱機関をこれ
までに提案もしている。この第４図に示した熱機関の場
合には、磁界が磁性流体の流れの向きと平行に作用する
ようになっており、磁性流体の運動に伴う粘性抵抗によ
る運動エネルギーの消費を小さくし、運動エネルギーを
有効に取り出せるようになっている。すなわち、永久磁
石（５）のＮ及びＳ極を対向して配置するとともに、こ
れらの磁極に穴をあけて開口部を設け、この開口部に磁
性流体（１）を充填した閉回路パイプ（２）を挿入し、
貫通させ、磁性流体（１）の流れ方向と永久磁石（５）
による磁界方向とが平行になるようにしている。また、
閉回路パイプ（２）の内径を加熱装置（８）付近では小
さくし、冷却装置（７）付近では大きくしてもいる（特
公平５−78277号公報（特願昭62−165187号）及び特開
昭64−12853号公報（特願昭62−165188号））。なお、
第４図図中の４は空隙部、３は羽根車、６は磁極間隙、
９は熱絶縁管を示している。Therefore, the inventor has previously proposed a heat engine as shown in FIG. In the case of the heat engine shown in FIG. 4, the magnetic field acts in parallel with the flow direction of the magnetic fluid, reducing the consumption of kinetic energy due to viscous resistance accompanying the movement of the magnetic fluid, The kinetic energy can be effectively extracted. That is, the N and S poles of the permanent magnet (5) are arranged to face each other, holes are formed in these magnetic poles to form openings, and the openings are filled with the magnetic fluid (1) to form a closed circuit pipe (2). ) And insert
Permeate the magnetic fluid (1) flow direction and the permanent magnet (5)
The magnetic field direction due to is parallel. Also,
The inner diameter of the closed circuit pipe (2) is made small near the heating device (8) and is made large near the cooling device (7) (Japanese Patent Publication No. 5-78277 (Japanese Patent Application No. 62-165187) and Japanese Patent Application No. 62-165187). Japanese Unexamined Patent Publication No. 64-12853 (Japanese Patent Application No. 62-165188). In addition,
In FIG. 4, 4 is a void portion, 3 is an impeller, 6 is a magnetic pole gap,
Reference numeral 9 indicates a heat insulating tube.
この熱機関の場合には、流体回路に組入れた羽根車
（３）を回転させることができ、磁性流体（１）の運動
性を第３図の熱機関の場合に比べて著しく改善すること
ができるが、それでも、磁性流体（１）の移動速度を速
め、運動エネルギーを大きくするのには限度があった。In the case of this heat engine, the impeller (3) incorporated in the fluid circuit can be rotated, and the motility of the magnetic fluid (1) can be remarkably improved as compared with the case of the heat engine of FIG. Although it was possible, there was still a limit to increasing the moving speed of the magnetic fluid (1) and increasing the kinetic energy.
この発明は、以上の事情に鑑みてなされたものであり、
従来の磁性流体熱機関の欠点を改善し、磁性流体の移動
速度を速め、大きな運動エネルギーを得ることのできる
磁性流体熱機関を提供することを目的としている。This invention was made in view of the above circumstances,
An object of the present invention is to provide a magnetic fluid heat engine capable of improving the defects of the conventional magnetic fluid heat engine, increasing the moving speed of the magnetic fluid, and obtaining a large kinetic energy.
（課題を解決するための手段） この発明の発明者らは、上記の課題を解決するべく鋭意
検討した結果、永久磁石を貫通する閉回路パイプに冷却
用熱交換器及び加熱用熱交換器を内蔵すると、冷却及び
加熱速度が高まり、熱交換がすみやかに、かつ効率よく
行われ、しかも閉回路パイプの断面内における磁性流体
の温度分布が一様となるとの知見を得た。(Means for Solving the Problems) The inventors of the present invention have made extensive studies to solve the above problems, and as a result, have installed a cooling heat exchanger and a heating heat exchanger in a closed circuit pipe that penetrates a permanent magnet. It was found that when incorporated, the cooling and heating rates are increased, heat exchange is promptly and efficiently performed, and the temperature distribution of the magnetic fluid in the cross section of the closed circuit pipe becomes uniform.
また、磁性流体は一般に比熱が大きいので、磁性流体が
それぞれの熱交換器に接触しながら流れるとき、磁性流
体は時間的、並びに空間的に少し遅れて温度変化する。
したがって、それらの熱交換器を互いに近接させて対向
配置するとともに、永久磁石の磁極間に設けた間隙の中
心位置を上記冷却用熱交換器と加熱用熱交換器との対向
中心位置よりも加熱用熱交換器に偏らせて配置すると、
冷却用及び加熱用熱交換器を順次通過する磁性流体の温
度差を短時間に顕著とすることができ、しかもその温度
変化は永久磁石の磁極間隙の空間内で効果的に起こり、
その結果として、磁性流体が速い速度で温度変化し、磁
性流体の運動エネルギーを大きくすることができること
を見出した。Moreover, since the magnetic fluid generally has a large specific heat, when the magnetic fluid flows while contacting each heat exchanger, the temperature of the magnetic fluid changes slightly with time and space.
Therefore, the heat exchangers are arranged close to each other and face each other, and the center position of the gap provided between the magnetic poles of the permanent magnet is heated more than the center position where the cooling heat exchanger and the heating heat exchanger face each other. If you place it in a biased heat exchanger,
The temperature difference between the magnetic fluids successively passing through the cooling and heating heat exchangers can be made noticeable in a short time, and the temperature change effectively occurs in the space of the magnetic pole gap of the permanent magnet.
As a result, they have found that the temperature of the magnetic fluid changes rapidly and the kinetic energy of the magnetic fluid can be increased.
そして、これらの知見に基づいてこの発明を完成したの
である。Then, the present invention has been completed based on these findings.
すなわち、この発明は、閉回路パイプと、この閉回路パ
イプ内に充填された作業物質としての磁性流体と、磁性
流体を冷却する冷却用熱交換器と、磁性流体を加熱する
加熱用熱交換器と、これらの熱交換器の間に磁界をかけ
る永久磁石とが備えられ、磁性流体を閉回路パイプ内で
移動させ、その運動エネルギーを取り出す熱機関におい
て、永久磁石の磁極が、異極どうしを対向させ、かつ間
隙をあけて配置されるとともに、その磁極には開口部が
形成され、閉回路パイプの一部がこの開口部に挿入さ
れ、貫通し、永久磁石の磁極が磁性流体の流れ方向に沿
って配置され、かつ永久磁石を貫通する閉回路パイプに
前記冷却用熱交換器及び加熱用熱交換器が内蔵され、こ
れらの熱交換器は互いに近接して対向配置されるととも
に、永久磁石の磁極間隙の中心位置が、冷却用及び加熱
用の熱交換器の対向中心位置よりも加熱用熱交換器側に
偏らせて配置されてなることを特徴とする磁性流体熱機
関を提供する。That is, the present invention relates to a closed circuit pipe, a magnetic fluid as a work substance filled in the closed circuit pipe, a cooling heat exchanger for cooling the magnetic fluid, and a heating heat exchanger for heating the magnetic fluid. And a permanent magnet that applies a magnetic field between these heat exchangers, the magnetic fluid is moved in a closed circuit pipe, and in the heat engine that extracts the kinetic energy, the magnetic poles of the permanent magnets are different from each other. The poles of the permanent magnet are arranged facing each other with a gap, and an opening is formed in the magnetic pole, and a part of the closed circuit pipe is inserted into the opening and penetrates, and the magnetic pole of the permanent magnet flows in the magnetic fluid flow direction. The heat exchanger for cooling and the heat exchanger for heating are built in a closed circuit pipe that is disposed along with the permanent magnet, and these heat exchangers are arranged close to each other and face each other. Magnetic pole The center position of the gap provides a magnetic fluid heat engine, characterized by comprising arranged to bias the heating heat exchanger side than the counter the central position of the cooling and heat exchanger for heating.
第４図に示したように、磁性流体（１）には、永久磁石
（５）の磁極を貫通する閉回路パイプ（２）において連
続的な温度勾配が形成されるが、この温度勾配がより急
激であれば、磁化（Ｍ）の変化が大きくなり、永久磁石
（５）の磁界による磁性流体（１）の移動速度を速くす
ることができる。As shown in FIG. 4, in the magnetic fluid (1), a continuous temperature gradient is formed in the closed circuit pipe (2) penetrating the magnetic poles of the permanent magnet (5). If it is abrupt, the change in the magnetization (M) becomes large, and the moving speed of the magnetic fluid (1) by the magnetic field of the permanent magnet (5) can be increased.
ところで、磁性流体（１）は、磁性粒子が溶媒に分散さ
れた流体であり、外部温度の変化に対して瞬時に応答し
て温度変化することはない。このため、この発明の磁性
流体熱機関の場合には、永久磁石を貫通する閉回路パイ
プに内蔵した冷却用及び加熱用熱交換器を互いに近接さ
せて対向配置するとともに、永久磁石の磁極間隙の中心
位置をそれらの冷却用熱交換器と加熱用熱交換器との対
向中心位置よりも加熱用熱交換器に偏らせて配置するこ
とによって、磁性流体の温度変化の応答速度を速くする
ことができ、かつ磁界のかかる部分に効果的な温度勾配
が実現される。移動する磁性流体の磁界分布に対して温
度分布が最適に重畳する。By the way, the magnetic fluid (1) is a fluid in which magnetic particles are dispersed in a solvent, and the temperature does not change instantaneously in response to a change in external temperature. Therefore, in the case of the magnetic fluid heat engine of the present invention, the cooling and heating heat exchangers built in the closed circuit pipe penetrating the permanent magnet are arranged close to each other and face each other, and the magnetic pole gap of the permanent magnet is By disposing the center position closer to the heating heat exchanger than the center position where the cooling heat exchanger and the heating heat exchanger face each other, the response speed of the temperature change of the magnetic fluid can be increased. It is possible to realize an effective temperature gradient in the portion to which the magnetic field is applied. The temperature distribution optimally overlaps the magnetic field distribution of the moving magnetic fluid.
（実施例） 以下図面に沿って実施例を示し、この発明の磁性流体熱
機関についてさらに詳しく説明する。(Example) An example will be described below with reference to the drawings, and the magnetic fluid heat engine of the present invention will be described in more detail.
第１図は、この発明の磁性流体熱機関の一実施例を示し
た断面図である。FIG. 1 is a sectional view showing an embodiment of the magnetic fluid heat engine of the present invention.
この第１図の例においては、磁性流体（１）は、たとえ
ば銅製等とした閉回路パイプ（２）内に充填されてい
る。磁性流体（１）の種類については特に制限はなく、
たとえば軽質パラフィンベースのマンガン−亜鉛磁性流
体を例示することができる。また、閉回路パイプ（２）
には、磁性流体（１）の運動エネルギーを外部に取り出
すための羽根車（３）が設けられている。永久磁石
（５）は、Ｎ及びＳ極の磁極が異極どうしを対向させ、
かつ間隙（６）をあけて配置されており、それらの磁極
には穴があいており、開口部が形成されている。この開
口部に閉回路パイプ（２）が挿入され、貫通している。
これによって、永久磁石（５）のＮ及びＳ極の磁極は、
閉回路パイプ（２）内を流れる磁性流体（１）の流れの
方向に沿って配置される。このようにすることで、永久
磁石（５）による磁界の方向が、磁性流体（１）の流れ
の方向と一致し、磁性流体（１）へ磁界を効果的に付与
することができる。In the example of FIG. 1, the magnetic fluid (1) is filled in a closed circuit pipe (2) made of, for example, copper. There are no particular restrictions on the type of magnetic fluid (1),
For example, a light paraffin-based manganese-zinc magnetic fluid can be exemplified. Also, closed circuit pipe (2)
Is provided with an impeller (3) for extracting the kinetic energy of the magnetic fluid (1) to the outside. In the permanent magnet (5), the magnetic poles of N and S poles make the different poles face each other,
In addition, they are arranged with a gap (6) between them, and their magnetic poles have holes and an opening is formed. A closed circuit pipe (2) is inserted into this opening and penetrates it.
As a result, the magnetic poles of the N and S poles of the permanent magnet (5) are
They are arranged along the direction of flow of the magnetic fluid (1) flowing in the closed circuit pipe (2). By doing so, the direction of the magnetic field by the permanent magnet (5) matches the direction of the flow of the magnetic fluid (1), and the magnetic field can be effectively applied to the magnetic fluid (1).
またこの例においては、永久磁石（５）を貫通する閉回
路パイプ（２）に冷却用熱交換器（10）及び加熱用熱交
換器（11）が内蔵され、内熱型としてもいる。これらの
冷却用及び加熱用熱交換器（10）（11）は、互いに近接
し、対向して配置されている。Moreover, in this example, the cooling heat exchanger (10) and the heating heat exchanger (11) are built in the closed circuit pipe (2) which penetrates the permanent magnet (5), and it is also set as an internal heat type. These cooling and heating heat exchangers (10, 11) are arranged close to each other and facing each other.
冷却用及び加熱用熱交換器（10）（11）としては、第２
図のa,b及びｃに示したように、たとえば銅、銀、アル
ミニウム等の熱伝導度が高い金属材料製の冷却水導入管
（12）又は熱水導入管（13）、あるいは線状又は管状発
熱体をヘアーピン状に折り曲げたもの（第２図ａ及び第
２図ｂ）、さらにはそれら導入管（12）（13）の周りに
熱伝導度が高い金属片（14）を取り付けたもの（第２図
ｃ）を例示することができる。さらにまた、多数の金属
片で導入管（12）（13）を挟み、隙間をあけて、平行に
積み重ねた構造のものであってもよい。その構成及び構
造については特にこれらに限定されることはなく、磁性
流体（１）と広い面で接し、その面が磁性流体（１）の
流線と平行な成分を多く持ち、直接、熱交換することの
できるものであればよい。いずれの場合においても、冷
却用及び加熱用熱交換器（10）（11）が閉回路パイプ
（２）に内蔵されていることから、磁性流体（１）を効
果的に冷却及び加熱することができ、冷却及び加熱の速
度が速められ、しかも閉回路パイプ（２）の断面内にお
ける磁性流体（１）の温度分布は一様となる。As a cooling and heating heat exchanger (10) (11), the second
As shown in a, b and c in the figure, for example, a cooling water introducing pipe (12) or a hot water introducing pipe (13) made of a metal material having high thermal conductivity such as copper, silver, aluminum, or a linear or A tubular heating element bent into a hairpin shape (Figs. 2a and 2b), and a metal piece (14) with high thermal conductivity attached around the introduction pipes (12) (13). (FIG. 2c) can be illustrated. Furthermore, the structure may be such that the introduction pipes (12) and (13) are sandwiched by a large number of metal pieces, and a gap is provided, and they are stacked in parallel. The structure and the structure are not particularly limited to these, and they are in contact with the magnetic fluid (1) on a wide surface, and the surface has many components parallel to the streamline of the magnetic fluid (1) and can directly exchange heat. Anything that can be done is acceptable. In any case, since the cooling and heating heat exchangers (10) (11) are built in the closed circuit pipe (2), the magnetic fluid (1) can be effectively cooled and heated. As a result, the cooling and heating speeds are increased, and the temperature distribution of the magnetic fluid (1) in the cross section of the closed circuit pipe (2) becomes uniform.
なお、これらの内熱型熱交換器（10）（11）の他に、さ
らに第３図及び第４図に示したような外熱型熱交換器
（７）（８）を併用することも可能で、この場合には、
磁性流体（１）の冷却及び加熱をより一層効果的に行う
ことができる。In addition to these internal heat type heat exchangers (10) and (11), external heat type heat exchangers (7) and (8) as shown in FIGS. 3 and 4 may be used in combination. Yes, in this case,
The magnetic fluid (1) can be cooled and heated more effectively.
そして第１図の例においては、永久磁石（５）の磁極間
隙（６）の中心位置（16）を冷却用及び加熱用熱交換器
（10）（11）の対向中心位置（17）よりも加熱用熱交換
器（11）側に偏らせて配置している。この偏らせの程度
は、加熱用熱交換器（11）の先端が、磁極間隙（６）を
はみ出さない程度において適宜に設定することができ
る。たとえば20mm程度とすることができる。In the example of FIG. 1, the center position (16) of the magnetic pole gap (6) of the permanent magnet (5) is set to be closer to the center position (17) of the cooling and heating heat exchangers (10) and (11). It is arranged so as to be biased toward the heating heat exchanger (11) side. The degree of this deviation can be appropriately set so that the tip of the heating heat exchanger (11) does not protrude from the magnetic pole gap (6). For example, it can be about 20 mm.
このような位置に冷却用及び加熱用熱交換器（10）（1
1）を配置することによって、冷却用及び加熱用熱交換
器（10）（11）を順次通過する磁性流体（１）の温度差
を短時間に顕著とすることができ、しかも温度変化を永
久磁石（５）による磁界のかかる部分において効果的に
起こすことができる。その温度変化は、永久磁石（５）
の磁極間隙（６）の中において有効に完結する。磁性流
体（１）の温度上昇は速められ、かつ磁極間隙（６）中
において必要な温度上昇が達成される。このため、磁性
流体（１）が速い速度で温度変化し、磁性流体（１）の
運動エネルギーを大きくすることができる。Cooling and heating heat exchangers (10) (1
By arranging 1), the temperature difference of the magnetic fluid (1) successively passing through the cooling and heating heat exchangers (10) (11) can be made noticeable in a short time, and the temperature change is permanent. It can be effectively generated in a portion to which a magnetic field is applied by the magnet (5). The temperature change is due to the permanent magnet (5)
Is effectively completed in the magnetic pole gap (6). The temperature rise of the magnetic fluid (1) is accelerated and the required temperature rise in the pole gap (6) is achieved. Therefore, the temperature of the magnetic fluid (1) changes at a high speed, and the kinetic energy of the magnetic fluid (1) can be increased.
なお、第１図図中の15は、高温部の温度を測定する熱電
対を示している。In addition, 15 in FIG. 1 has shown the thermocouple which measures the temperature of a high temperature part.
実際に、永久磁石（５）としてネオジウム−鉄−ホウ素
永久磁石を用い、巾50mmの磁極間隙（６）を設け、磁極
に形成した直径25mmの穴に内径15mmの閉回路パイプ
（２）を挿入し、貫通させた。そして、4KOeの磁界をか
けながら、磁極間隙（６）の範囲内に、冷却用熱交換器
（10）によって15℃の低温部を形成するとともに、加熱
用熱交換器（11）によって80℃の高温部を形成した。Actually, a neodymium-iron-boron permanent magnet was used as the permanent magnet (5), a magnetic pole gap (6) with a width of 50 mm was provided, and a closed circuit pipe (2) with an inner diameter of 15 mm was inserted into a hole with a diameter of 25 mm formed in the magnetic pole. Then penetrated. Then, while applying a magnetic field of 4 KOe, a cooling heat exchanger (10) forms a low temperature part of 15 ° C. within the range of the magnetic pole gap (6), and a heating heat exchanger (11) controls the temperature of 80 ° C. A hot part was formed.
磁極間隙（６）の中心位置（16）をその高温部側に20mm
程偏らせた条件下で熱機関を作動させたところ、羽根車
（３）は毎分70回回転した。一方、磁極間隙（６）を中
心位置（16）を高温側に偏らせないときは、羽根車
（３）の回転数は毎分50回であった。さらに、以上の冷
却及び加熱を従来の熱機関のように外熱型加熱及び冷却
とし、磁極間隙（６）の中心位置（16）を冷却用及び加
熱用熱交換器（10）（11）の対向中心位置（17）に一致
させた場合には、羽根車（５）の回転数は毎分20回とな
った。The center position (16) of the magnetic pole gap (6) is 20 mm on the high temperature side.
When the heat engine was operated under slightly deviated conditions, the impeller (3) rotated 70 times per minute. On the other hand, when the center position (16) of the magnetic pole gap (6) was not biased to the high temperature side, the rotation speed of the impeller (3) was 50 times per minute. Furthermore, the above cooling and heating is external heating type heating and cooling as in the conventional heat engine, and the center position (16) of the magnetic pole gap (6) is set in the cooling and heating heat exchangers (10) (11). In the case of matching with the facing center position (17), the rotation speed of the impeller (5) was 20 times per minute.
この発明の磁性流体熱機関の場合には、磁性流体（１）
の移動速度が進められ、より大きな運動エネルギーが得
られることが確認された。In the case of the magnetic fluid heat engine of the present invention, the magnetic fluid (1)
It has been confirmed that the moving speed of the is increased and a larger kinetic energy is obtained.
もちろんこの発明は、以上の例によって限定されること
はない。細部については様々な態様が可能であることは
言うでもない。Of course, the present invention is not limited to the above examples. It goes without saying that various details are possible.
（発明の効果） 以上詳しく説明した通り、この発明によって、磁性流体
は、速い応答速度での温度変化が可能となり、また、磁
界のかかる部分の温度差が顕著ともなり、磁性流体の流
れを速めることができ、より大きな運動エネルギーを得
ることができる。(Effects of the Invention) As described in detail above, according to the present invention, the temperature of the magnetic fluid can be changed at a fast response speed, and the temperature difference in the portion to which the magnetic field is applied becomes remarkable, so that the flow of the magnetic fluid is accelerated. It is possible to obtain more kinetic energy.
第１図は、この発明の磁性流体熱機関の一実施例を示し
た断面図である。 第２図a,b及びｃは、各々、熱交換器の一例を示した斜
視図である。 第３図は、従来の磁性流体熱機関を示した断面図であ
る。 第４図は、従来の磁性流体熱機関を示した断面図であ
る。 １……磁性流体 ２……閉回路パイプ ３……羽根車 ４……空隙部 ５……永久磁石 ６……磁極間隙 10……冷却用熱交換器 11……加熱用熱交換器 12……冷却水導入管 13……熱水導入管 14……熱伝導度の大きい金属片 15……熱電対 16……磁極間隔の中心位置 17……熱交換器の対向中心位置FIG. 1 is a sectional view showing an embodiment of the magnetic fluid heat engine of the present invention. 2A, 2B and 2C are perspective views each showing an example of a heat exchanger. FIG. 3 is a cross-sectional view showing a conventional magnetic fluid heat engine. FIG. 4 is a cross-sectional view showing a conventional magnetic fluid heat engine. 1 …… Magnetic fluid 2 …… Closed circuit pipe 3 …… Impeller 4 …… Gap 5 …… Permanent magnet 6 …… Pole gap 10 …… Cooling heat exchanger 11 …… Heating heat exchanger 12 …… Cooling water inlet pipe 13 …… Hot water inlet pipe 14 …… Metal piece with high thermal conductivity 15 …… Thermocouple 16 …… Center position of magnetic pole spacing 17 …… Center position of heat exchanger facing each other
Claims (1)
填された作業物質としての磁性流体と、磁性流体を冷却
する冷却用熱交換器と、磁性流体を加熱する加熱用熱交
換器と、これらの熱交換器の間に磁界をかける永久磁石
とが備えられ、磁性流体を閉回路パイプ内で移動させ、
その運動エネルギーを取り出す熱機関において、永久磁
石の磁極が、異極どうしを対向させ、かつ間隙をあけて
配置されるとともに、その磁極には開口部が形成され、
閉回路パイプの一部がこの開口部に挿入され、貫通し、
永久磁石の磁極が磁性流体の流れ方向に沿って配置さ
れ、かつ永久磁石を貫通する閉回路パイプに前記冷却用
熱交換器及び加熱用熱交換器が内蔵され、これらの熱交
換器は互いに近接して対向配置されるとともに、永久磁
石の磁極間隙の中心位置が、冷却用及び加熱用の熱交換
器の対向中心位置よりも加熱用熱交換器側に偏らせて配
置されてなることを特徴とする磁性流体熱機関。1. A closed circuit pipe, a magnetic fluid as a working substance filled in the closed circuit pipe, a cooling heat exchanger for cooling the magnetic fluid, and a heating heat exchanger for heating the magnetic fluid. , A permanent magnet for applying a magnetic field between these heat exchangers is provided to move the magnetic fluid in a closed circuit pipe,
In the heat engine that extracts the kinetic energy, the magnetic poles of the permanent magnets are arranged with the different poles facing each other and with a gap, and an opening is formed in the magnetic poles.
A part of the closed circuit pipe is inserted into this opening and penetrates,
The magnetic poles of the permanent magnets are arranged along the flow direction of the magnetic fluid, and the cooling heat exchanger and the heating heat exchanger are built in a closed circuit pipe that penetrates the permanent magnets, and these heat exchangers are close to each other. And the magnetic pole gaps of the permanent magnets are arranged such that the center positions of the magnetic pole gaps of the permanent magnets are located closer to the heating heat exchanger side than the facing center positions of the cooling and heating heat exchangers. And a magnetic fluid heat engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63257027A JPH0716309B2 (en) | 1988-10-14 | 1988-10-14 | Magnetic fluid heat engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63257027A JPH0716309B2 (en) | 1988-10-14 | 1988-10-14 | Magnetic fluid heat engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02106183A JPH02106183A (en) | 1990-04-18 |
| JPH0716309B2 true JPH0716309B2 (en) | 1995-02-22 |
Family
ID=17300726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63257027A Expired - Lifetime JPH0716309B2 (en) | 1988-10-14 | 1988-10-14 | Magnetic fluid heat engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0716309B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021235058A1 (en) * | 2020-05-19 | 2021-11-25 | 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 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6172945B2 (en) * | 2013-01-09 | 2017-08-02 | 株式会社Kri | MAGNETIC FLUID DRIVE DEVICE, HEAT TRANSPORT DEVICE AND POWER GENERATION DEVICE USING THE SAME |
-
1988
- 1988-10-14 JP JP63257027A patent/JPH0716309B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021235058A1 (en) * | 2020-05-19 | 2021-11-25 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02106183A (en) | 1990-04-18 |
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