JPH0638166Y2 - Actuator using metal hydride - Google Patents
Actuator using metal hydrideInfo
- Publication number
- JPH0638166Y2 JPH0638166Y2 JP1988048719U JP4871988U JPH0638166Y2 JP H0638166 Y2 JPH0638166 Y2 JP H0638166Y2 JP 1988048719 U JP1988048719 U JP 1988048719U JP 4871988 U JP4871988 U JP 4871988U JP H0638166 Y2 JPH0638166 Y2 JP H0638166Y2
- Authority
- JP
- Japan
- Prior art keywords
- metal hydride
- peltier element
- actuator
- solid metal
- insulating coating
- 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
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- Fluid-Pressure Circuits (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案は、金属水素化物利用のアクチユエータの改良に
関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to improvement of an actuator using metal hydride.
（従来の技術） 従来例として、特開昭61-270505号公報に、第４図に示
すような金属水素化物利用のアクチユエータが開示され
ている。１はアクチユエータの容器、12は粉末状の金属
水素化物、13は直列に接続されたペルチエ素子、14、15
は酸化アルミニウム（Al2O3）のような絶縁被膜であ
り、16はフイルタ、17はピストンである。(Prior Art) As a conventional example, Japanese Patent Laid-Open No. 61-270505 discloses an actuator using metal hydride as shown in FIG. 1 is an actuator container, 12 is a powdered metal hydride, 13 is a Peltier element connected in series, 14, 15
Is an insulating film such as aluminum oxide (Al 2 O 3 ), 16 is a filter, and 17 is a piston.
そして、ペルチエ素子13に図外の電源から直流を一定方
向に流せば、ペルチエ素子13は発熱し、熱は容器１の底
部に伝わつて、金属水素化物12を加熱し、金属水素化物
12に吸蔵されている水素ガスが放出される。水素ガス
は、フイルタ16を通過してピストン17を往き作動させ
る。又、ペルチエ素子13に逆方向の電流を流せば、ペル
チエ素子13は吸熱し、金属水素化物12は、容器１の底部
から冷却されて、水素ガスを吸収し、ピストン17は帰り
作動する。When a direct current is applied to the Peltier element 13 from a power source (not shown) in a certain direction, the Peltier element 13 generates heat, and the heat is transferred to the bottom of the container 1 to heat the metal hydride 12 and
Hydrogen gas stored in 12 is released. Hydrogen gas passes through the filter 16 and moves the piston 17 outward. When a current in the opposite direction is applied to the Peltier element 13, the Peltier element 13 absorbs heat, the metal hydride 12 is cooled from the bottom of the container 1, absorbs hydrogen gas, and the piston 17 is returned to work.
（考案が解決しようとする課題） 従来の金属水素化物12は、粉末状であつたので、使用経
過に伴つて微粉化し、次第に伝熱特性が劣化した。又容
器１の底部を介して、ペルチエ素子13と金属水素化物12
との熱交換がなされるために伝熱時間の遅れを生じ、迅
速な作動をピストン17に与えることができなく、又熱損
失も大きい。(Problems to be Solved by the Invention) Since the conventional metal hydride 12 is in the form of powder, the metal hydride 12 is pulverized over the course of use, and the heat transfer characteristics gradually deteriorate. Also, through the bottom of the container 1, the Peltier element 13 and the metal hydride 12
Since heat is exchanged with the heat transfer time, the heat transfer time is delayed, rapid operation cannot be given to the piston 17, and heat loss is large.
（課題を解決するための手段） 本考案は、ペルチエ素子と金属水素化物との熱交換を迅
速に行い、ひいては金属水素化物の水素ガスの放出、吸
収を迅速ならしめんとするものであり、最近開発された
固形金属水素化物を使用し、その構成は次の通りであ
る。(Means for Solving the Problem) The present invention is intended to rapidly perform heat exchange between a Peltier element and a metal hydride, and to quickly release and absorb hydrogen gas from the metal hydride. A recently developed solid metal hydride is used, and its constitution is as follows.
少なくとも一面に電気的な絶縁被膜が固着され、温度低
下に伴つて水素を吸蔵し、温度上昇に伴つて水素を放出
する固形金属水素化物と、複数個のペルチエ素子の一面
とを、前記絶縁被膜を該ペルチエ素子側として密接させ
ると共に、ペルチエ素子の他面を電気的な絶縁被膜で覆
つてアクチユエータの容器の内底部に固定した金属水素
化物利用のアクチユエータ。又、実施態様として固形金
属水素化物を覆つた絶縁被膜を、酸化アルミニウムとし
てある。An electrically insulating coating is fixed to at least one surface, a solid metal hydride that occludes hydrogen as the temperature decreases and releases hydrogen as the temperature rises, and one surface of a plurality of Peltier elements, the insulating coating Is closely contacted with the Peltier element side, and the other surface of the Peltier element is covered with an electrically insulating coating and fixed to the inner bottom of the container of the actuator. Further, as an embodiment, the insulating coating covering the solid metal hydride is aluminum oxide.
（作用） ペルチエ素子に正又は逆に通電すれば、ペルチエ素子は
発熱又は吸熱作用を生じ、薄い電気的な絶縁被膜を通し
て固形金属水素化物との間に熱の授受が迅速になされ、
固形金属水素化物が、水素ガスを活発に放出又は吸収
し、アクチユエータの容器内の水素ガス圧に急激な変動
を与える。このようにして、水素ガス圧の急激な変動に
よつて、アクチユエータ内の受圧体に迅速な運動が与え
られる。又ペルチエ素子の熱は容器壁に奪われることな
く、熱損失は小さい。(Operation) When the Peltier element is energized in the positive or reverse direction, the Peltier element causes heat generation or heat absorption, and heat is rapidly transferred to and from the solid metal hydride through a thin electric insulating film,
The solid metal hydride actively releases or absorbs hydrogen gas, and causes a drastic change in the hydrogen gas pressure in the actuator container. In this way, rapid movement of the hydrogen gas pressure causes rapid movement of the pressure receiving body in the actuator. Further, the heat of the Peltier element is not taken to the container wall, and the heat loss is small.
（実施例） 本考案に係る金属水素化物利用のアクチユエータの実施
例を第１図、第２図（イ）、（ロ）に基づいて説明す
る。(Example) An example of the actuator using metal hydride according to the present invention will be described with reference to FIGS. 1, 2 (a) and 2 (b).
１はアクチユエータの容器、２はマイクロカプセル化や
その他の手段にて固形化された固形金属水素化物であ
り、固形金属水素化物２は、温度低下に伴つて水素を吸
蔵し、温度上昇に伴つて水素を放出する性質を有する。
３は直列に接続された複数個のペルチエ素子であり、一
面を電気的な絶縁被膜４、例えば酸化アルミニウム被膜
で覆つてある。５は固形金属水素化物２のペルチエ素子
３側を覆う電気的な絶縁被膜であり、例えば酸化アルミ
ニウムをプラズマ溶射にて固着して形成してある。この
絶縁被膜５は、ペルチエ素子３との電気的絶縁が得られ
る厚さを有すればよく、薄いもので充分である。1 is a container of an actuator, 2 is a solid metal hydride solidified by microencapsulation or other means, solid metal hydride 2 occludes hydrogen as the temperature decreases, and as the temperature rises It has the property of releasing hydrogen.
Reference numeral 3 denotes a plurality of Peltier elements connected in series, one surface of which is covered with an electrically insulating coating 4 such as an aluminum oxide coating. Reference numeral 5 is an electrically insulating coating that covers the Peltier element 3 side of the solid metal hydride 2, and is formed by, for example, fixing aluminum oxide by plasma spraying. It is sufficient that the insulating coating 5 has a thickness that allows electrical insulation from the Peltier element 3, and a thin one is sufficient.
このような絶縁被膜４を一面に有するペルチエ素子３の
他面に絶縁被膜５を密着させて、ペルチエ素子３と固形
金属水素化物２とを密接させた状態で、ペルチエ素子３
の絶縁被膜４を容器１内の底側として挿入し、容器１の
内底部に固定してある。７は容器１内に摺動可能に配置
された受圧体をなすピストンである。なお、必要に応じ
て、固形金属水素化物２の両面を絶縁被膜で覆つて、両
面にペルチエ素子を配置する場合もある。With the insulating coating 5 adhered to the other surface of the Peltier element 3 having such an insulating coating 4 on one surface, and the Peltier element 3 and the solid metal hydride 2 are brought into close contact with each other, the Peltier element 3
The insulating coating 4 is inserted as the bottom side in the container 1 and fixed to the inner bottom of the container 1. Reference numeral 7 denotes a piston which is slidably arranged in the container 1 and serves as a pressure receiving body. If necessary, both sides of the solid metal hydride 2 may be covered with insulating coatings, and Peltier elements may be arranged on both sides.
次に作用について説明する。Next, the operation will be described.
直列に接続されたペルチエ素子３に正又は逆に通電すれ
ば、ペルチエ素子３は発熱又は吸熱作用を生じ、固形金
属水素化物２の一面に固着した薄い絶縁被膜５を通して
固形金属水素化物２との間に熱の授受が迅速になされ、
固形金属水素化物２の加熱又は冷却によつて固形金属水
素化物２は、迅速に水素ガスを放出又は吸収する。この
ようにして、容器１内の水素ガス圧が急激に変動し、受
圧体であるピストン７に迅速な往復動が与えられる。When the Peltier element 3 connected in series is energized in the positive or reverse direction, the Peltier element 3 produces heat or endothermic action, and the Peltier element 3 passes through the thin insulating film 5 fixed to one surface of the solid metal hydride 2 and the solid metal hydride 2. In the meantime, the transfer of heat is done quickly,
By heating or cooling the solid metal hydride 2, the solid metal hydride 2 rapidly releases or absorbs hydrogen gas. In this way, the hydrogen gas pressure inside the container 1 fluctuates abruptly, and the piston 7, which is the pressure receiving body, is rapidly reciprocated.
なお、アクチユエータとしては、ピストンを有するシリ
ンダに限定するものではなく、容器１内に受圧体を備え
た構造であればよく、例えば第２図（イ）、（ロ）に示
すようなアクチユエータにも本考案は適用される。第２
図（イ）は、ペローズの他端周縁が容器１のカバーの内
面に固定され、一端に受圧板７′を備え、その中心部に
容器１から突出する作用棒７′ａの一端を固定してあ
る。第２図（ロ）は、ダイヤフラム７″の周縁を容器１
の内周面に固定し、その中心部に容器１から突出する作
用棒７′ａの一端を固定してある。いずれの場合に於て
も、容器１内の水素ガス圧の変動によつて、受圧体であ
る受圧板７′又はダイヤフラム７″を介して作用棒７′
a,7″ａに前後動が与えられる。The actuator is not limited to a cylinder having a piston, but may be any structure having a pressure receiving body in the container 1, and may be an actuator such as shown in FIGS. 2 (a) and 2 (b). The present invention is applicable. Second
In the figure (a), the other end of the bellows is fixed to the inner surface of the cover of the container 1, the pressure receiving plate 7'is provided at one end, and one end of the action rod 7'a protruding from the container 1 is fixed at the center thereof. There is. FIG. 2B shows that the peripheral edge of the diaphragm 7 ″ is the container 1
Is fixed to the inner peripheral surface of the container, and one end of the action rod 7'a protruding from the container 1 is fixed to the center thereof. In any case, due to the fluctuation of the hydrogen gas pressure in the container 1, the action rod 7'is passed through the pressure receiving plate 7'or the diaphragm 7 "which is a pressure receiving body.
A back and forth movement is given to a, 7 ″ a.
次に比較試験の結果を、第３図（イ）、（ロ）に基づい
て説明する。Next, the result of the comparative test will be described with reference to FIGS.
実施例と同様に、固形金属水素化物２とペルチエ素子３
との間に絶縁被膜５のみを介在させた試験品と、絶縁被
膜５と固形金属水素化物２との間に、従来例の容器１の
底に該当する厚さ5mmのステンレス鋼板を介在させた比
較品に於て、ペルチエ素子への通電による加熱又は冷却
に基づく固形金属水素化物２への熱伝熱の相違を測定し
た。第３図（イ）に試験品の結果を、第３図（ロ）に比
較品の結果を、それぞれ線図にて示す。両図に於て、Ａ
線は、試験品のペルチエ素子３と固形金属水素化物２と
の間の絶縁被膜５の温度変化又は比較品のペルチエ素子
とステンレス鋼板との間の絶縁被膜の温度変化を示し、
Ｂ線は、固形金属水素化物の温度変化を示す。Similar to the embodiment, the solid metal hydride 2 and the Peltier element 3 are used.
And a test product in which only the insulation coating 5 is interposed between the insulation coating 5 and the solid metal hydride 2 is interposed between the insulation coating 5 and the solid metal hydride 2 by a stainless steel plate having a thickness of 5 mm corresponding to the bottom of the container 1 of the conventional example. In the comparative product, the difference in heat transfer to the solid metal hydride 2 due to heating or cooling by energizing the Peltier element was measured. The result of the test product is shown in FIG. 3 (a), and the result of the comparative product is shown in FIG. 3 (b). In both figures, A
The line shows the temperature change of the insulating coating 5 between the Peltier element 3 of the test article and the solid metal hydride 2 or the temperature change of the insulating coating between the Peltier element of the comparative article and the stainless steel plate.
Line B shows the temperature change of the solid metal hydride.
両図から知られるように、試験品の方が、温度変化が迅
速であり、かつ高温と低温との温度差が大きく、ペルチ
エ素子３の発熱・吸熱作用が極めて迅速、かつ有効に固
形金属水素化物２に伝えられている。As is known from both figures, the test product has a faster temperature change, a large temperature difference between the high temperature and the low temperature, the heat generation / heat absorption action of the Peltier element 3 is extremely quick, and the solid metal hydrogen is effective. It is transmitted to monster 2.
（考案の効果） 以上の説明によつて理解されるように、本考案になる金
属水素化物利用のアクチユエータによれば、ペルチエ素
子と固形金属水素化物との間の熱の授受が、固形金属水
素化物に固着した電気的な絶縁被膜を介して迅速になさ
れ、かつ容器に奪われる熱損失も減少し、固形金属水素
化物の水素ガスの放出及び吸収が活発になり、ひいては
水素ガス圧で作用するアクチユエータの応答性能を著し
く向上させることができた。(Effect of the Invention) As can be understood from the above description, according to the actuator using metal hydride according to the present invention, the heat transfer between the Peltier element and the solid metal hydride is performed by the solid metal hydrogen. Of the solid metal hydride is rapidly carried out through the electrically insulating coating adhered to the hydride, and the heat loss taken by the container is also reduced, so that the release and absorption of hydrogen gas of the solid metal hydride becomes active, which in turn works under hydrogen gas pressure. The response performance of the actuator could be significantly improved.
又、固形金属水素化物を使用することによつて、伝熱性
能を長期間良好に維持でき、従つてアクチユエータの性
能を長期間良好に確保できるようになつた。Further, by using the solid metal hydride, the heat transfer performance can be kept good for a long period of time, and thus the performance of the actuator can be ensured well for a long period of time.
第１図は、本考案に係る金属水素化物利用のアクチユエ
ータの実施例を示す要部断面図、第２図（イ）、（ロ）
は、それぞれアクチユエータの他の構造例を示す要部断
面図、第３図（イ）は、実施例に於けるペルチエ素子と
固形金属水素化物との温度変化を示す線図、第３図
（ロ）は、ペルチエ素子と固形金属水素化物との間に金
属板を介在させた場合のペルチエ素子と固形金属水素化
物との温度変化を示す線図、第４図は、従来の金属水素
化物利用のアクチユエータの要部断面図である。 1:アクチユエータの容器、2:固形金属水素化物、4,5:絶
縁被膜（Al2O3被膜）、7:ピストン（受圧体）、７′：
ペローズの受圧板（受圧体）、７″：ダイヤフラム（受
圧体）。FIG. 1 is a cross-sectional view of an essential part showing an embodiment of an actuator using metal hydride according to the present invention, and FIGS. 2 (a) and 2 (b).
FIG. 3A is a sectional view of a main part showing another example of the structure of the actuator, and FIG. 3A is a diagram showing a temperature change between the Peltier element and the solid metal hydride in the embodiment. ) Is a diagram showing a temperature change between the Peltier element and the solid metal hydride when a metal plate is interposed between the Peltier element and the solid metal hydride, and FIG. It is a principal part sectional drawing of an actuator. 1: Actuator container, 2: Solid metal hydride, 4,5: Insulating coating (Al 2 O 3 coating), 7: Piston (pressure receiving body), 7 ':
Pellows pressure receiving plate (pressure receiving body), 7 ″: diaphragm (pressure receiving body).
Claims (2)
され、温度低下に伴つて水素を吸蔵し、温度上昇に伴つ
て水素を放出する固形金属水素化物と、複数個のペルチ
エ素子の一面とを、前記絶縁被膜を該ペルチエ素子側と
して密接させると共に、ペルチエ素子の他面を電気的な
絶縁被膜で覆つてアクチユエータの容器の内底部に固定
したことを特徴とする金属水素化物利用のアクチユエー
タ。1. A solid metal hydride having an electrically insulating coating adhered to at least one surface thereof, which occludes hydrogen as the temperature decreases and releases hydrogen as the temperature increases, and one surface of a plurality of Peltier elements. Is closely contacted with the insulating coating on the Peltier element side, and the other surface of the Peltier element is covered with an electrical insulating coating so as to be fixed to the inner bottom portion of the container of the actuator.
化アルミニウム（Al2O3）とした請求項（１）記載の金
属水素化物利用のアクチユエータ。2. The actuator using metal hydride according to claim 1, wherein the insulating coating covering the solid metal hydride is aluminum oxide (Al 2 O 3 ).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988048719U JPH0638166Y2 (en) | 1988-04-13 | 1988-04-13 | Actuator using metal hydride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988048719U JPH0638166Y2 (en) | 1988-04-13 | 1988-04-13 | Actuator using metal hydride |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01152107U JPH01152107U (en) | 1989-10-20 |
| JPH0638166Y2 true JPH0638166Y2 (en) | 1994-10-05 |
Family
ID=31274854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988048719U Expired - Lifetime JPH0638166Y2 (en) | 1988-04-13 | 1988-04-13 | Actuator using metal hydride |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0638166Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58121308A (en) * | 1982-01-11 | 1983-07-19 | Matsushita Electric Ind Co Ltd | Component part for actuator |
| JPS61270505A (en) * | 1985-05-27 | 1986-11-29 | Japan Steel Works Ltd:The | Actuator using metal hydride |
-
1988
- 1988-04-13 JP JP1988048719U patent/JPH0638166Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01152107U (en) | 1989-10-20 |
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