JPH0459884A - Cold-accumulation material - Google Patents
Cold-accumulation materialInfo
- Publication number
- JPH0459884A JPH0459884A JP2172141A JP17214190A JPH0459884A JP H0459884 A JPH0459884 A JP H0459884A JP 2172141 A JP2172141 A JP 2172141A JP 17214190 A JP17214190 A JP 17214190A JP H0459884 A JPH0459884 A JP H0459884A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic material
- lead
- cold
- cold storage
- grains
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 title abstract description 9
- 238000009825 accumulation Methods 0.000 title abstract 4
- 239000000696 magnetic material Substances 0.000 claims abstract description 24
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 7
- 239000011232 storage material Substances 0.000 claims description 12
- 239000002245 particle Substances 0.000 abstract description 11
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/003—Gas cycle refrigeration machines characterised by construction or composition of the regenerator
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明はＧＭ、 ソルベー、スターリングサイクル等
による極低温冷凍機に用いる蓄冷材に関するものである
。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a cold storage material used in cryogenic refrigerators manufactured by GM, Solvay, Stirling Cycle, etc.
〈従来の技術〉
従来用いられるこの種の冷却器に詰める蓄冷材としては
、Ｅｒ３ＮｉやＤｙｏ、、Ｅｒｏ、。<Conventional Technology> Conventionally used cold storage materials packed in this type of cooler include Er3Ni, Dyo, Ero, etc.
Ｎｉ２等の希土類磁性材料を用い、より低い到達温度を
得られることが、第４２回低温工学・超電導学合予稿集
に述べられている。It is stated in the proceedings of the 42nd Low Temperature Engineering and Superconductivity Conference that a lower ultimate temperature can be obtained by using rare earth magnetic materials such as Ni2.
〈発明が解決しようとする課題〉
しかし乍ら、これらの磁性材料は硬度が高く球状に成形
することが困難なため、現在蓄冷材として検討されてい
るものは方形状のものが多く、蓄冷器に対する充填率が
低く蓄冷材としての性能（蓄冷効率）が十分に発揮され
ていない。<Problem to be solved by the invention> However, since these magnetic materials have high hardness and are difficult to form into a spherical shape, many of the materials currently being considered as cold storage materials are rectangular. The filling rate is low, and its performance as a cold storage material (cold storage efficiency) is not fully demonstrated.
また、これら磁性材料は熱伝導率も低く蓄冷効率が比熱
特性より期待される値いより低いものとなる欠点を有す
る。なお、磁性材ａとな鉛の粒（ｐｂ粒）ｂを別々に要
約に詰める蓄冷器Ｃも考えられているが（第６図参照）
、装置が大型化するものである。Furthermore, these magnetic materials have the disadvantage that their thermal conductivity is low and their cold storage efficiency is lower than expected based on their specific heat characteristics. Note that a regenerator C is also being considered in which magnetic material a and lead grains (pb grains) b are packed separately (see Figure 6).
, the equipment becomes larger.
本発明は上記実情に鑑み、磁性材と鉛の粒（ｐｂ粒）と
の組合わせに改良を加えることにより、上記課題を解決
するようにした蓄冷材を提供する二′とを目的としたも
のである。In view of the above circumstances, the present invention aims to provide a cold storage material that solves the above problems by improving the combination of magnetic material and lead grains (PB grains). It is.
く課題を解決するための手段〉
本発明は、粉体化した希土類元素を含む磁性材と、この
磁性材か付着した多数の鉛の粒とから構成したものであ
る。Means for Solving the Problems> The present invention is composed of a magnetic material containing a powdered rare earth element and a large number of lead grains attached to the magnetic material.
く作 用〉
上記のように、充填率の高い形状となる鉛の粒（Ｐｂ粒
）を主体とし、該鉛の粒の表面に粉体（微粒）化した希
土類元素を含む磁性材をコーティングしてなるため、蓄
冷器に対する充填率と、磁性材の低温での良好な比熱特
性を利用し蓄冷効率が向上する。Effect> As mentioned above, the main body is lead grains (Pb grains) that have a shape with a high filling rate, and the surface of the lead grains is coated with a magnetic material containing powdered (fine grains) rare earth elements. As a result, the cold storage efficiency is improved by utilizing the filling rate of the regenerator and the good specific heat characteristics of the magnetic material at low temperatures.
〈実施例〉
以下、本発明の実施例を図面に基づいて説明すれば、次
の通りである。<Example> Hereinafter, an example of the present invention will be described based on the drawings.
第１図、第２図において、１は球状に形成が容易な多数
の鉛（Ｐ ｂ）粒で、該鉛の粒１の表面に、例えばφ０
．３順程度に粉体化した希土類元素を含む磁性材２をコ
ーティングすることによって付着させて、この多数の鉛
の粒１と磁性材２とて蓄冷材３を形成している。In FIGS. 1 and 2, reference numeral 1 denotes a large number of lead (Pb) grains that are easily formed into spherical shapes, and on the surface of the lead grains 1, for example,
．． A large number of lead particles 1 and the magnetic material 2 form a cold storage material 3 by coating and adhering a magnetic material 2 containing a rare earth element powdered into powder.
いまこの球状の鉛の粒１に対する粉体の磁性材２の付着
は、球状の鉛の粒１（第４図参照）と磁性材２（第３図
参照）とを単に混ぜ合わせるだけで、鉛の粒１の表面に
磁性材２が食い込み蓄冷材３（第１図、第２図参照）と
なる。Now, the adhesion of the powdered magnetic material 2 to the spherical lead grains 1 is achieved by simply mixing the spherical lead grains 1 (see Figure 4) and the magnetic material 2 (see Figure 3). The magnetic material 2 bites into the surface of the grains 1, forming a cold storage material 3 (see FIGS. 1 and 2).
ここにおいて、蓄冷器４の構成に当たっては、単にこの
蓄冷材３を筐体内に詰め込めばよい。、この主体とな鉛
の粒は球状を呈しているため、充填率は向上する。この
場合、蓄冷効率は鉛の粒だけの場合と比較して低温での
比熱特性の向上分だけ向上する。Here, in constructing the regenerator 4, it is sufficient to simply pack the regenerator material 3 into the housing. Since the main lead particles are spherical, the filling rate is improved. In this case, the cold storage efficiency is improved by the improvement in specific heat characteristics at low temperatures compared to the case of using only lead particles.
〈発明の効果〉
上述のように、本発明の蓄冷材は多数の鉛の粒に粉体の
磁性材をコーティングしたことにより、低温での比熱特
性が良好な充填率の高い蓄冷材となる。また、磁性材は
粉体化しているため、鉛の粒の粒径が小さくてもよく、
熱伝導率の低い物質でも、蓄冷材としての熱移動に支障
を生じないようになる等の効果を有する。<Effects of the Invention> As described above, the regenerator material of the present invention has a large number of lead grains coated with a powdered magnetic material, resulting in a regenerator material with good specific heat characteristics at low temperatures and a high filling rate. In addition, since the magnetic material is powdered, the particle size of the lead particles may be small.
Even substances with low thermal conductivity have the effect of not causing any hindrance to heat transfer as a cold storage material.
第１図は本発明の実施例を示す蓄冷材群の正面図、第２
図は同車−の拡大蓄冷材の正面図、第３図は磁性材形状
の説明図、第４図は鉛粒形状の説明図、第５図は本発明
の蓄冷材を詰めた蓄冷器の説明図、第６図は従来の蓄冷
器の説明図である。
１・・・鉛の粒、２・・・磁性材。
第１図
代 理 人
尾 股 行 雄
第３図
ｔ′Ｒ４図
第５図
第６囚FIG. 1 is a front view of a group of cold storage materials showing an embodiment of the present invention, and FIG.
The figure is a front view of the enlarged cold storage material of the same vehicle, Figure 3 is an explanatory diagram of the shape of the magnetic material, Figure 4 is an explanatory diagram of the shape of lead particles, and Figure 5 is a diagram of the regenerator filled with the cold storage material of the present invention. Explanatory diagram, FIG. 6 is an explanatory diagram of a conventional regenerator. 1... Lead grains, 2... Magnetic material. Figure 1 Deputy Osamu Hitomi Mata Yuki Male Figure 3 t'R4 Figure 5 Figure 6 Prisoner
Claims (1)
が付着した多数の鉛の粒とから構成したことを特徴とす
る蓄冷材。1. A cold storage material comprising a magnetic material containing a powdered rare earth element and a large number of lead grains to which the magnetic material is attached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2172141A JPH0791534B2 (en) | 1990-06-29 | 1990-06-29 | Cool storage material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2172141A JPH0791534B2 (en) | 1990-06-29 | 1990-06-29 | Cool storage material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0459884A true JPH0459884A (en) | 1992-02-26 |
| JPH0791534B2 JPH0791534B2 (en) | 1995-10-04 |
Family
ID=15936328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2172141A Expired - Lifetime JPH0791534B2 (en) | 1990-06-29 | 1990-06-29 | Cool storage material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0791534B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06159828A (en) * | 1992-11-20 | 1994-06-07 | Mitsubishi Electric Corp | Cold heat storage type refrigerating machine |
| WO1998018880A1 (en) * | 1996-10-30 | 1998-05-07 | Kabushiki Kaisha Toshiba | Cold accumulation material for ultra-low temperature, refrigerating machine using the material, and heat shield material |
-
1990
- 1990-06-29 JP JP2172141A patent/JPH0791534B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06159828A (en) * | 1992-11-20 | 1994-06-07 | Mitsubishi Electric Corp | Cold heat storage type refrigerating machine |
| WO1998018880A1 (en) * | 1996-10-30 | 1998-05-07 | Kabushiki Kaisha Toshiba | Cold accumulation material for ultra-low temperature, refrigerating machine using the material, and heat shield material |
| US6003320A (en) * | 1996-10-30 | 1999-12-21 | Kabushiki Kaisha Toshiba | Cold accumulating material for extremely low temperature cold, refrigerator using the same and heat shielding member |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0791534B2 (en) | 1995-10-04 |
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