JPH06159005A - Manufacturing device of moving blade and stationary blade - Google Patents
Manufacturing device of moving blade and stationary bladeInfo
- Publication number
- JPH06159005A JPH06159005A JP31245992A JP31245992A JPH06159005A JP H06159005 A JPH06159005 A JP H06159005A JP 31245992 A JP31245992 A JP 31245992A JP 31245992 A JP31245992 A JP 31245992A JP H06159005 A JPH06159005 A JP H06159005A
- Authority
- JP
- Japan
- Prior art keywords
- blade
- molds
- mold
- main body
- moulds
- 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
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、航空用、産業用ガスタ
ービン等の圧縮機で使用される動翼および静翼の製造方
法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing moving blades and stationary blades used in compressors for aviation and industrial gas turbines.
【０００２】[0002]
【従来の技術】航空用、産業用ガスタービン等の圧縮機
で使用される動翼、静翼は、一般にチタン、ステンレ
ス、アルミニウム等を素材とした金属製であり、この動
翼、静翼を製造するにあたっては、従来、鋳造加工、機
械加工、仕上げ加工およびコーティング加工の手順にし
たがって作業が行なわれていた。しかしながら、従来の
製造方法においては、（１）製造期間が長い、（２）素
材のコストが高くかつ加工工程が多いので高価である、
（３）細部の複雑な加工が困難で形状精度が得られな
い、（４）重量が重いなどの問題点を有していたため、
近年では、繊維強化プラスチックを利用した動翼、静翼
の製造が行われている。2. Description of the Related Art Moving blades and stationary blades used in compressors for aviation and industrial gas turbines are generally made of metal such as titanium, stainless steel and aluminum. In the manufacture, work has been conventionally performed according to the procedures of casting, machining, finishing and coating. However, in the conventional manufacturing method, (1) the manufacturing period is long, (2) the cost of the raw material is high, and the number of processing steps is large, so that it is expensive.
(3) The complicated processing of the details is difficult and the shape accuracy cannot be obtained, and (4) the weight is heavy.
In recent years, moving blades and stationary blades using fiber reinforced plastic have been manufactured.
【０００３】すなわち、繊維強化プラスチックを利用し
た動翼、静翼の製造では、プリプレグ材を積層一体化し
た翼本体形成材で、所望の翼形状より小寸法でかつ該翼
形状に近似の翼本体を形成し（以下、翼本体成形工程と
いう）、次いでこの翼本体を、所望の翼形状を得るため
のモールドに挿入し、該翼本体とモールドとの間に形成
される隙間内にＰＥＥＫ（ポリエーテルエーテルケト
ン）等のコーティング樹脂を圧入、充填した状態で、圧
縮成形を行なう（以下、最終コーティング工程という）
ようにしており、これにより、上述した（１）〜（４）
の問題を全て解決している。That is, in the production of moving blades and stationary blades using fiber reinforced plastic, a blade body forming material in which prepreg materials are laminated and integrated is used, and the blade body is smaller in size than a desired blade shape and close to the blade shape. (Hereinafter, referred to as a blade body forming step), the blade body is then inserted into a mold for obtaining a desired blade shape, and PEEK (polyester) is formed in a gap formed between the blade body and the mold. Perform compression molding with a coating resin such as (ether ether ketone) pressed in and filled (hereinafter referred to as the final coating step)
Therefore, as a result, the above (1) to (4)
Has solved all the problems of.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記の
ような繊維強化プラスチックを利用した動翼、静翼の製
造では、上記（１）〜（４）の問題を解決できる一方
で、以下のような問題が新たに生じていた。すなわち、
翼本体成形工程において、プリプレグ材を積層一体化し
た翼本体形成材で、所望の翼形状より小寸法でかつ該翼
形状に近似の翼本体を形成するようにしているが、仮に
この翼本体が、前記小寸法を越えた大きさに形成された
場合には、その後の最終コーティング工程において、翼
本体とモールドとの間の隙間量が十分でなく、これによ
り隙間に圧入される樹脂量が不十分となったり、また、
モールドから樹脂がオーバーフローすることがあり、こ
れにより、プリプレグ内のファイバーの配列が乱れて不
整となり、一定の品質の翼が製造できないという問題が
生じていた。However, while manufacturing the rotor blades and the stator blades using the fiber reinforced plastic as described above, the problems (1) to (4) described above can be solved, while the following problems are solved. There was a new problem. That is,
In the blade main body forming step, a blade main body forming material in which prepreg materials are laminated and integrated is used to form a blade main body having a size smaller than a desired blade shape and close to the blade shape. If the size is larger than the small size, the amount of the gap between the blade main body and the mold is not sufficient in the subsequent final coating step, and the amount of resin press-fitted into the gap is insufficient. It ’s enough,
The resin sometimes overflows from the mold, which causes the fibers in the prepreg to be disordered and irregular, resulting in the problem that a blade of constant quality cannot be manufactured.
【０００５】この発明は、上記の事情に鑑みてなされた
ものであって、翼本体にコーティング樹脂をコーティン
グする最終コーティング工程において、翼本体とモール
ドとの間に形成される隙間の量を最適値にすることがで
き、これによってモールドから樹脂がオーバーフローす
る等のトラブルを防止することができて、一定の品質の
翼を製造することが可能な動翼および静翼の製造装置の
提供を目的とする。The present invention has been made in view of the above circumstances, and in the final coating step of coating the blade body with the coating resin, the optimum amount of the gap formed between the blade body and the mold is set. Therefore, it is possible to prevent troubles such as resin overflow from the mold, and to provide a manufacturing device of a moving blade and a stationary blade capable of manufacturing blades of constant quality. To do.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に本発明では、プリプレグ材を積層一体化した翼本体形
成材により形成され、かつ所望の翼形状より小寸法に形
成された翼本体が挿入される一対のモールドを有し、こ
れらモールドと翼本体との間に形成される隙間にコーテ
ィング樹脂を圧入、充填した状態で、翼本体の圧縮成形
を行なう動翼および静翼の製造装置であって、前記モー
ルドの合わせ面に、前記モールドの間隔を調整する間隔
調整部材を設けるようにしている。In order to achieve the above object, the present invention provides a blade body formed of a blade body forming material in which prepreg materials are laminated and integrated, and having a smaller size than a desired blade shape. With a pair of molds to be inserted, and in a state in which a coating resin is press-fitted and filled into a gap formed between these molds and a blade body, a blade and a stationary blade manufacturing apparatus for compression-molding the blade body. Therefore, a gap adjusting member for adjusting the gap between the molds is provided on the mating surface of the mold.
【０００７】[0007]
【作用】本発明によれば、モールドの合わせ面に該モー
ルドの間隔を調整する間隔調整部材が設けられているの
で、この間隔調整部材により、モールドと翼本体との間
に形成される隙間の間隔を一定とすることができ、これ
によりモールドと翼本体との間隔が不足することにより
生じる、モールドからの樹脂のオーバーフローを防止す
ることができ、その結果、プリプレグ内のファイバーの
配列が乱れて不整な状態となることを防止できて、一定
の品質の翼を製造することができる。また、モールドと
翼本体との間に形成される隙間の間隔を一定とすること
ができるので、翼本体にコーティングされるコーティン
グ樹脂の厚さも均一とすることができ、この点において
も一定の品質の翼の製造が期待される。According to the present invention, since the gap adjusting member for adjusting the gap between the molds is provided on the mating surface of the mold, the gap adjusting member prevents the gap formed between the mold and the blade body. It is possible to keep the distance constant, which can prevent resin overflow from the mold caused by insufficient distance between the mold and the blade body, and as a result, the fiber arrangement in the prepreg is disturbed. It is possible to prevent an irregular state and manufacture a blade of constant quality. Also, since the gap formed between the mold and the blade body can be made uniform, the thickness of the coating resin coated on the blade body can also be made uniform, and in this respect as well Is expected to be manufactured.
【０００８】[0008]
【実施例】以下、図１〜図５を参照して、本発明に係る
動翼および静翼（以下、単に翼と略称する）の製造装置
の構成を簡単に説明し、その後、この製造装置を用いた
翼の製造工程を説明する。この翼の製造装置は、図３〜
図５で示すように翼本体形成材１がキャビティ２ａ内に
挿入され、かつ該キャビティ２ａ内にて加工される一対
のモールド２、２を主な構成要素とするものであって、
これらモールド２、２には、樹脂を供給するための圧入
路３、３と、これらモールド２、２間の間隔を調整する
ための間隔調整部材４，９が設けられている。なお、こ
の翼の製造装置には加熱手段、保持手段、樹脂供給手段
等が具備されているが、加熱手段、保持手段、樹脂供給
手段等は既に公知ものであるので、実施例での説明及び
図示は省略する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of a moving blade and stationary blade (hereinafter simply referred to as blade) manufacturing apparatus according to the present invention will be briefly described below with reference to FIGS. The manufacturing process of the blade using is explained. This blade manufacturing device is shown in FIG.
As shown in FIG. 5, the blade body forming material 1 is inserted into the cavity 2a, and has a pair of molds 2 and 2 which are processed in the cavity 2a as main components.
These molds 2 and 2 are provided with press-fitting passages 3 and 3 for supplying resin and gap adjusting members 4 and 9 for adjusting the gap between the molds 2 and 2. This blade manufacturing apparatus is provided with heating means, holding means, resin supply means, etc., but since the heating means, holding means, resin supply means, etc. are already known, the explanation in the embodiments and Illustration is omitted.
【０００９】以下、図３〜図５に示す翼の製造装置によ
る翼の製造工程について説明する。 《翼本体形成材１の作成工程》まず、図１及び図２に示
すようにプリプレグ材１ａ、１ａ…を板状に積層一体化
して翼本体形成材１を形成する。プリプレグ材１ａは、
母材（マトリックス）がエポキシ樹脂等の熱硬化性樹
脂、強化材が炭素繊維からなる強化プラスチックであ
り、これを複数枚板状に積層して、オートクレーブ内に
入れ、窒素雰囲気のもと加圧加熱状態で、一体化する。
翼本体形成材１は、所望の翼を２分割したものに近似の
形状を有し、図１はこの翼本体形成材１の平面図、図２
は側面図を示している。The manufacturing process of the blade by the blade manufacturing apparatus shown in FIGS. 3 to 5 will be described below. << Step of Creating Blade Main Body Forming Material 1 >> First, as shown in FIGS. 1 and 2, the prepreg materials 1a, 1a ... Are laminated and integrated in a plate shape to form the blade main body forming material 1. The prepreg material 1a is
The base material (matrix) is a thermosetting resin such as epoxy resin, and the reinforcing material is a reinforced plastic made of carbon fiber. Multiple layers of this are laminated into an autoclave and pressed under a nitrogen atmosphere. Integrate in the heated state.
The blade body forming material 1 has a shape similar to that of a desired blade divided into two parts. FIG. 1 is a plan view of the blade body forming material 1.
Shows a side view.
【００１０】《翼本体７の作成工程》次に、図４に示す
ように、前記翼本体形成材１、１を２体重ね合わせて、
モールド２のキャビティ２ａ内に挿入する。このとき前
記翼本体形成材１、１を２体重ね合わせた大きさは、モ
ールド２、２を重ね合わせた際に形成されるキャビティ
２ａの大きさより若干小さめに形成する。また、前記翼
本体形成材１、１をモールド２、２のキャビティ２ａ内
に挿入する場合には、図４で示すように翼本体形成材
１、１の全表面を離型紙フィルム５で覆うようにしてお
く。<< Step of Creating Blade Main Body 7 >> Next, as shown in FIG. 4, two blade main body forming materials 1 and 1 are superposed on each other,
It is inserted into the cavity 2a of the mold 2. At this time, the size in which the two blade body forming materials 1 and 1 are superposed is formed to be slightly smaller than the size of the cavity 2a formed when the molds 2 and 2 are superposed. When the blade body forming materials 1 and 1 are inserted into the cavities 2a of the molds 2 and 2, the release paper film 5 covers the entire surface of the blade body forming materials 1 and 1 as shown in FIG. Leave.
【００１１】次に、図４で示すように、離型紙フィルム
５とモールド２、２のキャビティ２ａ表面との間に形成
された隙間６、６に、圧入路３、３を通じて、エポキシ
樹脂、ポリイミド樹脂等の粉末状の充填材７を圧入し、
隙間６、６に充填材７を充填した状態で圧縮成形を行
う。なお、このときの圧縮成形は、１８０℃程度の温度
条件下で行ない、この圧縮成形により、所望の翼形状
（１２）より若干小さめで該翼形状に近似した形状の翼
本体８を得る。また、この翼本体８を作成する工程にお
いては、モールド２、２間の間隔を調整するための間隔
調整部材４は一定の厚さのものを用い、この工程ではモ
ールド２、２間の間隔を調整することは行わない。Next, as shown in FIG. 4, epoxy resin and polyimide are passed through the press-fit passages 3 and 3 into the gaps 6 and 6 formed between the release paper film 5 and the surfaces of the cavities 2a of the molds 2 and 2. Press the powdery filler 7 such as resin into
Compression molding is performed in a state where the gaps 6 and 6 are filled with the filler 7. The compression molding at this time is performed under a temperature condition of about 180 ° C., and by this compression molding, the blade main body 8 having a shape slightly smaller than the desired blade shape (12) and approximated to the blade shape is obtained. Further, in the process of making the blade body 8, the space adjusting member 4 for adjusting the space between the molds 2 and 2 has a constant thickness, and in this process, the space between the molds 2 and 2 is adjusted. No adjustment is made.
【００１２】《最終コーティング工程》次いで、モール
ド２、２を開いて、前記離型紙フィルム５と充填材７と
をモールド２、２内から取り出し、再度、該モールド
２、２にて翼本体８から所望の翼形状を得るための作業
を行う。すなわち、まず、図５で示すようにモールド
２、２のキャビティ２ａ内に翼本体８を挿入する。そし
て、このとき翼本体８とモールド２、２のキャビティ２
ａとの隙間１０の間隔ｎを測定し、この間隔ｎが最適と
される間隔ｍより大きい場合、あるいは小さい場合に
は、間隔ｎが間隔ｍに一致するように間隔調整部材９で
調整する。例えば、翼本体８とモールド２、２のキャビ
ティ２ａとの間隔ｎが最適な間隔ｍより大きい場合、間
隔調整部材９を厚さのより小さいものに変更し、また、
翼本体８とモールド２、２のキャビティ２ａとの間隔ｎ
が最適な間隔ｍより小さい場合に、間隔調整部材９を厚
さのより大きいものに変更するといった作業を行う。<< Final Coating Step >> Next, the molds 2 and 2 are opened, the release paper film 5 and the filler 7 are taken out from the molds 2 and 2, and again from the blade body 8 by the molds 2 and 2. Perform work to obtain the desired blade shape. That is, first, as shown in FIG. 5, the blade body 8 is inserted into the cavities 2a of the molds 2 and 2. At this time, the wing body 8 and the cavity 2 of the molds 2 and 2 are
The distance n between the clearance 10 and a is measured, and when the distance n is larger or smaller than the optimum distance m, the distance adjusting member 9 adjusts the distance n to match the distance m. For example, when the distance n between the blade body 8 and the cavities 2a of the molds 2 and 2 is larger than the optimum distance m, the distance adjusting member 9 is changed to have a smaller thickness, and
Distance n between the blade body 8 and the cavities 2a of the molds 2 and 2
Is smaller than the optimum distance m, the distance adjusting member 9 is changed to a larger thickness.
【００１３】そして、このように間隔調整部材９を決定
した場合には、図５に示すように翼本体８とモールド２
との間に形成される隙間１０に、モールド２、２に形成
された圧入路３、３を通じてコーティング樹脂１１を圧
入し、この隙間１０を充填した状態で、圧縮成形を行
う。なお、このときのコーティング樹脂１１にはＰＥＥ
Ｋ（ポリエーテルエーテルケトン）、あるいはＰＥＥＫ
に強化材としてカーボンファイバ等を混入した複合材な
どを用いる。圧縮成形は、ＰＥＥＫの熱可塑流動性を発
現させ得る温度（４００℃程度）に加熱した条件下で行
なう。これにより、翼本体８の周囲に厚さ０．５ｍｍ以
下程度のＰＥＥＫの層が形成された所望の翼形状の翼１
２が得られる。When the distance adjusting member 9 is determined in this way, the wing body 8 and the mold 2 as shown in FIG.
The coating resin 11 is press-fitted into the gap 10 formed between the molds 2 and 3 through the press-fitting paths 3 and 3 formed in the molds 2, and compression molding is performed in a state where the gap 10 is filled. In addition, PEE is used as the coating resin 11 at this time.
K (polyether ether ketone) or PEEK
As the reinforcing material, a composite material mixed with carbon fiber or the like is used. The compression molding is performed under the condition of being heated to a temperature (about 400 ° C.) at which the thermoplastic fluidity of PEEK can be exhibited. Thus, the blade 1 having a desired blade shape in which a PEEK layer having a thickness of about 0.5 mm or less is formed around the blade body 8.
2 is obtained.
【００１４】以上詳細に説明したように本実施例に示す
翼の製造装置によれば、モールド２、２の合わせ面に該
モールド２、２の間隔ｎを調整する間隔調整部材９が設
けられているので、この間隔調整部材９により、モール
ド２、２と翼本体８との間に形成される隙間の間隔ｎを
最適な値とすることができ、これによりモールド２、２
と翼本体８との間隔ｎが不足することにより生じる、モ
ールド２、２からのコーティング樹脂１１のオーバーフ
ローを防止でき、かつ、プリプレグ内のファイバーの配
列が乱れて不整となることを防止することができ、一定
の品質の翼１２を製造することができるという効果が得
られる。また、モールド２、２と翼本体８との間に形成
される隙間ｎの間隔を一定とすることができるので、翼
本体８にコーティングされるコーティング樹脂１１の厚
さも均一とすることができ、この点においても一定の品
質の翼１２を製造できる効果が得られる。As described above in detail, according to the blade manufacturing apparatus of this embodiment, the gap adjusting member 9 for adjusting the gap n between the molds 2 and 2 is provided on the mating surfaces of the molds 2 and 2. Therefore, the gap adjusting member 9 can set the gap n between the molds 2 and 2 and the blade main body 8 to an optimum value.
It is possible to prevent the coating resin 11 from overflowing from the molds 2 and 2 caused by the shortage of the distance n between the blade body 8 and the blade body 8, and to prevent the fibers in the prepreg from being disordered and irregular. Therefore, it is possible to obtain the effect that the blade 12 having a constant quality can be manufactured. Further, since the gap n formed between the molds 2 and 2 and the blade main body 8 can be made constant, the thickness of the coating resin 11 coated on the blade main body 8 can also be made uniform, Also in this respect, the effect that the blade 12 having a constant quality can be manufactured can be obtained.
【００１５】なお、本発明は前記実施例のみに限定され
るものではなく、本発明の要旨を逸脱しない範囲内であ
れば、種々の変更を加え得ることはもちろんである。例
えば、前記実施例では、翼本体形成材１を所望の翼形状
を２分割したものに近似の形状としたが、該翼本体形成
材１は、一体でもよいし、あるいは３分割以上に分割さ
れたものに近似の形状とされてもよい。The present invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made without departing from the scope of the present invention. For example, in the above-described embodiment, the blade body forming material 1 has a shape similar to a desired blade shape divided into two, but the blade body forming material 1 may be integrated, or divided into three or more. The shape may be similar to that of the one.
【００１６】[0016]
【発明の効果】以上詳細に説明したように本発明によれ
ば、モールドの合わせ面に該モールドの間隔を調整する
間隔調整部材が設けられているので、この間隔調整部材
により、モールドと翼本体との間に形成される隙間の間
隔を一定とすることができ、これによりモールドと翼本
体との間隔が不足することにより生じる、モールドから
の樹脂のオーバーフローを防止でき、かつ、プリプレグ
内のファイバーの配列が乱れて不整となることを防止す
ることができ、一定の品質の翼を製造することができる
という効果が得られる。また、モールドと翼本体との間
に形成される隙間の間隔を一定とすることができるの
で、翼本体にコーティングされるコーティング樹脂の厚
さも均一とすることができ、この点においても一定の品
質の翼を製造できる効果が得られる。As described above in detail, according to the present invention, since the gap adjusting member for adjusting the gap between the molds is provided on the mating surface of the mold, the gap adjusting member allows the mold and the blade body to be adjusted. The gap formed between the mold and the blade can be made constant, which can prevent the resin from overflowing from the mold caused by the insufficient gap between the mold and the blade body, and the fiber in the prepreg. The arrangement can be prevented from becoming irregular and irregular, and an effect that a blade of constant quality can be manufactured can be obtained. Also, since the gap formed between the mold and the blade body can be made uniform, the thickness of the coating resin coated on the blade body can also be made uniform, and in this respect as well It is possible to obtain the effect that the wing can be manufactured.
【図１】本発明に係る動翼および静翼の製造工程の一実
施例において、プリプレグ材を積層一体化して得た翼本
体形成材の一例を示す平面図である。FIG. 1 is a plan view showing an example of a blade body forming material obtained by laminating and integrating prepreg materials in an embodiment of a process for manufacturing a moving blade and a stationary blade according to the present invention.
【図２】図１の翼本体形成材の側面図である。2 is a side view of the blade body forming material of FIG. 1. FIG.
【図３】本発明に係る翼の製造装置におけるモールドを
示す斜視図。FIG. 3 is a perspective view showing a mold in the wing manufacturing apparatus according to the present invention.
【図４】図３に示すモールドのＩＶ−ＩＶ線に沿う断面
図。FIG. 4 is a cross-sectional view of the mold shown in FIG. 3, taken along line IV-IV.
【図５】図３に示すモールドのＶ−Ｖ線に沿う断面図。5 is a cross-sectional view of the mold shown in FIG. 3, taken along line VV.
１ 翼本体形成材 １ａ プリプレグ材 ２ モールド ８ 翼本体 ９ 間隔調整部材 １０ 隙間 １１ コーティング樹脂 １２ 翼 1 Blade Main Body Forming Material 1a Prepreg Material 2 Mold 8 Blade Main Body 9 Interval Adjustment Member 10 Gap 11 Coating Resin 12 Blade
Claims (1)
成材により形成され、かつ、所望の翼形状より小寸法に
形成された翼本体が挿入される一対のモールドを有し、
これらモールドと翼本体との間に形成される隙間にコー
ティング樹脂を圧入、充填した状態で、翼本体の圧縮成
形を行なう動翼および静翼の製造装置であって、 前記モールドの合わせ面には前記モールドの間隔を調整
する間隔調整部材が設けられていることを特徴とする動
翼および静翼の製造装置。1. A pair of molds, each of which is formed of a blade main body forming material in which prepreg materials are laminated and integrated, and into which a blade main body formed in a size smaller than a desired blade shape is inserted,
A manufacturing apparatus for a moving blade and a stationary blade that performs compression molding of a blade body in a state where a coating resin is press-fitted and filled in a gap formed between the mold and the blade body, wherein a mating surface of the mold is An apparatus for manufacturing a moving blade and a stationary blade, characterized in that an interval adjusting member for adjusting an interval between the molds is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31245992A JP3147549B2 (en) | 1992-11-20 | 1992-11-20 | Moving and stationary blade manufacturing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31245992A JP3147549B2 (en) | 1992-11-20 | 1992-11-20 | Moving and stationary blade manufacturing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06159005A true JPH06159005A (en) | 1994-06-07 |
| JP3147549B2 JP3147549B2 (en) | 2001-03-19 |
Family
ID=18029455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31245992A Expired - Fee Related JP3147549B2 (en) | 1992-11-20 | 1992-11-20 | Moving and stationary blade manufacturing equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3147549B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007503546A (en) * | 2003-08-27 | 2007-02-22 | ティーティーエル ダイナミクス リミッテッド | Energy recovery system |
-
1992
- 1992-11-20 JP JP31245992A patent/JP3147549B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007503546A (en) * | 2003-08-27 | 2007-02-22 | ティーティーエル ダイナミクス リミッテッド | Energy recovery system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3147549B2 (en) | 2001-03-19 |
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