JPH09195987A - Centrifugal compressor - Google Patents
Centrifugal compressorInfo
- Publication number
- JPH09195987A JPH09195987A JP8004694A JP469496A JPH09195987A JP H09195987 A JPH09195987 A JP H09195987A JP 8004694 A JP8004694 A JP 8004694A JP 469496 A JP469496 A JP 469496A JP H09195987 A JPH09195987 A JP H09195987A
- Authority
- JP
- Japan
- Prior art keywords
- impeller
- aluminum alloy
- carbon fiber
- heat
- centrifugal compressor
- 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.)
- Withdrawn
Links
Landscapes
- Supercharger (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えばエンジンの
過給器などとして適用される遠心圧縮機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a centrifugal compressor used as, for example, an engine supercharger.
【０００２】[0002]
【従来の技術】図２はエンジンの過給器などとして使用
されている従来の遠心圧縮機の羽根車の説明図である。
図において、大型のディーゼルエンジン用過給器として
多く用いられている遠心圧縮機の羽根車０１は、比較的
圧縮比が低く最高部（圧縮空気の出口）における温度が
１６０℃程度までしか上昇しない大気吸い込み型の単段
式の場合は、溶解／鍛造耐熱性アルミ合金の一体削り出
しで作られている。また、高性能で圧縮比が高い場合、
或いは吸い込み側のガス温度が高く最高部（圧縮空気の
出口）における温度が２００℃を越える場合は、鋳鋼、
或いはチタン合金などで作られている。図における符号
０２はロータ軸、０３はケーシング、０４はケーシン
グ、０５は空気の流れである。2. Description of the Related Art FIG. 2 is an explanatory view of an impeller of a conventional centrifugal compressor used as a supercharger of an engine.
In the figure, an impeller 01 of a centrifugal compressor, which is often used as a supercharger for a large-sized diesel engine, has a relatively low compression ratio and the temperature at the highest part (compressed air outlet) rises only up to about 160 ° C. In the case of a single-stage type that sucks in air, it is made by integrally cutting out molten / forged heat-resistant aluminum alloy. Also, if high performance and high compression ratio,
Or, if the gas temperature on the suction side is high and the temperature at the highest point (compressed air outlet) exceeds 200 ° C, cast steel,
Or it is made of titanium alloy. In the figure, reference numeral 02 is a rotor shaft, 03 is a casing, 04 is a casing, and 05 is an air flow.
【０００３】[0003]
【発明が解決しようとする課題】上記のような従来の遠
心圧縮機の羽根車において、圧縮比が〜３．５と比較的
低く大型のディーゼルエンジン用過給器として多く用い
られている大気を吸い込む単段式の遠心圧縮機の場合で
も、エンジンの高性能化に対応して高圧縮比化が要求さ
れるようになってきている。圧縮比が４．０を越える遠
心圧縮機の場合は、羽根車０１の回転数が上昇するため
に背板側の中心近傍（中心から半径方向に２／３程度の
位置まで）の遠心応力が大きくなるとともに、全体的に
温度が上昇して特に圧縮空気の出口における温度は２０
０℃以上にもなる。In the impeller of the conventional centrifugal compressor as described above, the compression ratio is relatively low at about 3.5, and the atmosphere often used as a supercharger for a large diesel engine. Even in the case of a single-stage centrifugal compressor that draws in, a high compression ratio has been required in response to higher engine performance. In the case of a centrifugal compressor having a compression ratio of more than 4.0, the centrifugal stress near the center of the back plate (up to about 2/3 in the radial direction from the center) occurs because the rotation speed of the impeller 01 increases. As the temperature increases, the temperature rises as a whole, and the temperature at the outlet of the compressed air is 20
It can reach over 0 ℃.
【０００４】通常、このような大気を吸い込む単段式の
遠心圧縮機の場合は、羽根車１は溶解／鍛造耐熱性アル
ミ合金の一体削り出しで作られており、特に耐熱強度の
観点から現状では最も耐熱性を有するＡｌ−Ｃｕ−Ｍｇ
系のＪＩＳ−Ａ２６１８合金が多く用いられている。し
かしながら、現状の耐熱性アルミ合金は１００℃を越え
る温度領域で強度が不足するため、これ以上は羽根車０
１の回転数を上げることができず、また時効熱処理（１
９０℃×１０〜２０時間程度）により強度を確保するタ
イプの合金であるため、時効温度を越える温度領域で長
時間加熱されると強度が低下する耐熱強度の限界があっ
て遠心圧縮機の性能向上に対応することができない状態
にある。Usually, in the case of such a single-stage centrifugal compressor that sucks in the atmosphere, the impeller 1 is made by integrally cutting out a melting / forging heat-resistant aluminum alloy, and in particular, from the viewpoint of heat resistance, it is the current situation. Al-Cu-Mg, which has the highest heat resistance
Many JIS-A2618 alloys are used. However, the current heat-resistant aluminum alloy lacks strength in the temperature range exceeding 100 ° C.
The number of rotations of 1 cannot be increased, and the aging heat treatment (1
(90 ° C x 10 to 20 hours) It is a type of alloy that secures its strength, so if it is heated for a long time in the temperature range exceeding the aging temperature, the strength will decrease, and there is a limit to the heat resistance strength of the centrifugal compressor. It is in a state where it cannot cope with improvement.
【０００５】従って、高圧力比を確保するために羽根車
１の材料として鋳鋼、或いはチタン合金などに移行する
傾向にあるが、羽根車１が非常に複雑な形状をしている
ために耐熱性アルミ合金製の羽根車と比較すると製造、
加工コストが著しく高くなる、また耐熱性アルミ合金と
比較すると鋳鋼あるいはチタン合金は材料の密度が大き
いために遠心圧縮機全体の重量が重くなるとともに応答
性（レスポンス）が悪くなるなどの不具合を生じてい
る。Therefore, in order to secure a high pressure ratio, there is a tendency to shift to cast steel, titanium alloy, or the like as the material of the impeller 1, but the impeller 1 has a very complicated shape, so that it has heat resistance. Manufactured in comparison with the impeller made of aluminum alloy,
Machining costs are significantly high, and cast steel or titanium alloys have a higher material density than heat-resistant aluminum alloys, which increases the weight of the entire centrifugal compressor and causes problems such as poor response. ing.
【０００６】[0006]
【課題を解決するための手段】本発明に係る遠心圧縮機
の羽根車は上記課題の解決を目的にしており、羽根車本
体がアルミ合金製の遠心圧縮機における上記羽根車本体
の背面にカーボン繊維強化プラスチック複合材が添着さ
れている。このように本遠心圧縮機においては回転によ
る遠心応力が大きいうえに温度も１００℃を越えるため
に耐熱性が要求されるアルミ合金製の羽根車本体の背面
にカーボン繊維強化プラスチック複合材ＣＦＲＰを張り
付けた構造としており、カーボン繊維強化プラスチック
複合材ＣＦＲＰは密度が１．４〜１．７程度と耐熱性ア
ルミ合金よりも小さく、強度および剛性は耐熱性アルミ
合金よりも大きいうえに、マトリックスをなす耐熱性樹
脂やカーボン繊維などの材質を適宜選択することにより
２５０℃程度までは耐熱性アルミ合金よりも強度が高
く、良好な特性を有するものも多く開発されている。従
って、遠心圧縮機の羽根車をこのような複合構造の羽根
車とすることにより軽量で加工性が良く安価に製造可能
なアルミ合金製の羽根車の適用範囲を従来の圧縮比３．
５程度（最高温度；１７０℃程度）までから圧縮比５．
０程度（最高温度；２５０℃程度）まで拡大することが
できる。The impeller of a centrifugal compressor according to the present invention is intended to solve the above-mentioned problems, and in the centrifugal compressor whose impeller body is made of aluminum alloy, carbon is provided on the back surface of the impeller body. Fiber reinforced plastic composite material is attached. As described above, in this centrifugal compressor, the centrifugal stress due to rotation is large, and the temperature exceeds 100 ° C. Therefore, the carbon fiber reinforced plastic composite material CFRP is attached to the back surface of the impeller body made of aluminum alloy, which is required to have heat resistance. The carbon fiber reinforced plastic composite material CFRP has a density of 1.4 to 1.7, which is smaller than that of the heat-resistant aluminum alloy, and the strength and rigidity are larger than those of the heat-resistant aluminum alloy, and the heat resistance that forms the matrix. By appropriately selecting materials such as heat-resistant resin and carbon fiber, many materials having higher strength than heat-resistant aluminum alloy up to about 250 ° C. and good characteristics have been developed. Therefore, by using an impeller of such a composite structure as the impeller of the centrifugal compressor, the applicable range of the impeller made of an aluminum alloy, which is lightweight, has good workability, and can be manufactured at low cost, is the same as the conventional compression ratio of 3.
From about 5 (maximum temperature; about 170 ° C) to compression ratio 5.
It can be expanded to about 0 (maximum temperature; about 250 ° C).
【０００７】[0007]
【発明の実施の形態】図１は本発明の実施の一形態に係
る遠心圧縮機の羽根車の説明図である。図において、本
実施の形態に係る遠心圧縮機の羽根車はエンジンの過給
器として使用される遠心圧縮機の羽根車で、一般に羽根
車出口における空気の温度は遠心圧縮機の圧力比に応じ
て高くなるため、常温の空気を吸い込んだ場合でも圧力
比が約４．０程度になると羽根車背板の中央部から半径
方向に約１／２の位置よりも外周部では温度が１５０℃
を越え、特に羽根車出口における空気の温度は２００℃
以上に達する。また、羽根車の背板外側に発生する応力
も高く、１５０℃を越える高温に対する強度が必要であ
る。1 is an explanatory view of an impeller of a centrifugal compressor according to an embodiment of the present invention. In the figure, an impeller of a centrifugal compressor according to the present embodiment is an impeller of a centrifugal compressor used as a supercharger of an engine, and generally, the temperature of air at the outlet of the impeller depends on the pressure ratio of the centrifugal compressor. Therefore, even if air is sucked in at room temperature, if the pressure ratio becomes approximately 4.0, the temperature will be 150 ° C at the outer peripheral portion than at the position approximately 1/2 in the radial direction from the center of the impeller back plate.
And the temperature of the air at the outlet of the impeller is 200 ℃
Reach more. Further, the stress generated on the outer side of the back plate of the impeller is also high, and strength against high temperatures exceeding 150 ° C. is required.
【０００８】このため、本遠心圧縮機の羽根車において
は羽根車本体１を一般的なアルミ合金の中でも比較的耐
熱性が良いＡｌ−Ｃｕ−Ｍｇ系のＪＩＳ−Ａ２６１８合
金（溶解／鍛造耐熱性アルミ合金）により製作するとと
もに、回転による遠心応力が大きいうえに温度も１００
℃を越え出口近傍で約２００℃にもなる羽根車の背板外
側にカーボン繊維強化プラスチック複合材ＣＦＲＰ製の
円盤６を張り付けた構造になっている。このカーボン繊
維強化プラスチック複合材ＣＦＲＰの構成素材には耐熱
性および熱の拡散を考慮して耐熱エポキシ樹脂と熱伝達
特性の良いピッチ系のカーボン繊維とを採用している。
また、カーボン繊維の配向は基本的には羽根車の回転中
心に対して等方向になるように一方向繊維材と二次元織
物クロス材とを交互に積層している。図における符号２
はロータ軸、３，４はケーシング、５は空気の流れを示
す矢印である。Therefore, in the impeller of the present centrifugal compressor, the impeller body 1 is made of Al-Cu-Mg-based JIS-A2618 alloy (melting / forging heat resistance, which has relatively high heat resistance among general aluminum alloys. Aluminum alloy), the centrifugal stress caused by rotation is large, and the temperature is 100
The disk 6 made of carbon fiber reinforced plastic composite material CFRP is attached to the outside of the back plate of the impeller, which exceeds about 200 ° C. and reaches about 200 ° C. near the outlet. In consideration of heat resistance and heat diffusion, a heat-resistant epoxy resin and pitch-based carbon fiber having good heat transfer characteristics are adopted as constituent materials of the carbon fiber-reinforced plastic composite material CFRP.
Further, the unidirectional fiber material and the two-dimensional woven cloth material are alternately laminated so that the orientation of the carbon fiber is basically equal to the rotation center of the impeller. Reference numeral 2 in the figure
Is a rotor shaft, 3 and 4 are casings, and 5 is an arrow indicating the flow of air.
【０００９】羽根車を組立てる場合は、先ず羽根車本体
１をＪＩＳ−Ａ２６１８合金（溶解／鍛造耐熱性アルミ
合金）で製作して仕上げた後に、その背板外側に予め製
造した肉厚３mmのカーボン繊維強化プラスチック複合材
ＣＦＲＰ製の円盤６をビス止めと耐熱性接着剤による接
着とを併用して接合する。そして、円盤６を接合した複
合構造の羽根車本体１を回転試験機の台上に取付けて所
定の運転回転数まで回転させ、特に振動などの異常がな
く良好な性能が得られることを確認する。When assembling the impeller, first, the impeller body 1 is made of JIS-A2618 alloy (melting / forging heat-resistant aluminum alloy) and finished, and then the prefabricated carbon having a thickness of 3 mm is formed on the outside of the back plate. The disc 6 made of the fiber-reinforced plastic composite material CFRP is joined together by using a screw and a heat-resistant adhesive. Then, the impeller body 1 having a composite structure in which the disks 6 are joined is mounted on the base of the rotation tester and rotated to a predetermined operating speed, and it is confirmed that there is no abnormality such as vibration and good performance can be obtained. .
【００１０】このようにして得られた耐熱性アルミ合金
とカーボン繊維強化プラスチック複合材ＣＦＲＰとの複
合構造の羽根車を遠心圧縮機に適用した場合、大型のデ
ィーゼルエンジン用過給器として多く用いられている大
気吸い込み型の単段式の場合、圧力比が現状の約３．５
程度（最高温度；１７０℃程度）から約５．０程度（最
高温度；２５０℃程度）まで上げることができ、エンジ
ンの性能向上の要求に対して幅広く対応することができ
るとともに、コスト的にも比較的安価で応答性（レスポ
ンス）の良好な遠心圧縮機を得ることができる。When the impeller having a composite structure of the heat-resistant aluminum alloy and the carbon fiber reinforced plastic composite material CFRP thus obtained is applied to a centrifugal compressor, it is often used as a supercharger for a large diesel engine. In the case of the single-stage type of the air suction type, the pressure ratio is about 3.5.
The temperature can be increased from about (maximum temperature: about 170 ° C) to about 5.0 (maximum temperature: about 250 ° C), which can meet a wide range of demands for engine performance improvement and also in terms of cost. It is possible to obtain a centrifugal compressor that is relatively inexpensive and has good responsiveness.
【００１１】従来の遠心圧縮機の羽根車において、圧縮
比が〜３．５と比較的低く大型のディーゼルエンジン用
過給器として多く用いられている大気を吸い込む単段式
の遠心圧縮機の場合でも、エンジンの高性能化に対応し
て高圧縮比化が要求されるようになってきている。圧縮
比が４．０を越える遠心圧縮機の場合は、羽根車０１の
回転数が上昇するために背板側の中心近傍（中心から半
径方向に２／３程度の位置まで）の遠心応力が大きくな
るとともに、全体的に温度が上昇して特に圧縮空気の出
口における温度は２００℃以上にもなる。通常、このよ
うな大気を吸い込む単段式の遠心圧縮機の場合は、羽根
車１は溶解／鍛造耐熱性アルミ合金の一体削り出しで作
られており、特に耐熱強度の観点から現状では最も耐熱
性を有するＡｌ−Ｃｕ−Ｍｇ系のＪＩＳ−Ａ２６１８合
金が多く用いられている。しかしながら、現状の耐熱性
アルミ合金は１００℃を越える温度領域で強度が不足す
るため、これ以上は羽根車０１の回転数を上げることが
できず、また時効熱処理（１９０℃×１０〜２０時間程
度）により強度を確保するタイプの合金であるため、時
効温度を越える温度領域で長時間加熱されると強度が低
下する耐熱強度の限界があって遠心圧縮機の性能向上に
対応することができない状態にある。従って、高圧力比
を確保するために羽根車１の材料として鋳鋼、或いはチ
タン合金などで作る方法に移行する傾向にあるが、羽根
車１が非常に複雑な形状をしているために耐熱性アルミ
合金製の羽根車と比較すると製造、加工コストが著しく
高くなる、また耐熱性アルミ合金と比較すると鋳鋼ある
いはチタン合金は材料の密度が大きいために遠心圧縮機
全体の重量が重くなるとともに応答性（レスポンス）が
悪くなるなどの不具合を生じている。これに対し、本遠
心圧縮機の羽根車においてはこのような課題を解決する
ために大型のディーゼルエンジン用過給機などとして使
用される遠心圧縮機の羽根車本体１を耐熱性アルミ合金
製とし、この羽根車本体１の背板外側にカーボン繊維強
化プラスチック複合材ＣＦＲＰ製の円板６を張り付けた
構造として複合構造の羽根車としている。このように、
本遠心圧縮機の羽根車は羽根車本体１は従来の時効析出
強化型の耐熱性アルミ合金で製作し、回転による遠心応
力が大きいうえに温度も１００℃を越え出口近傍では約
１８０℃にもなる羽根車本体１の背板外側にはカーボン
繊維強化プラスチック複合材ＣＦＲＰ製の円板６を張り
付けた構造にしており、張り付ける方法として例えば直
接接着する、或いは接着とビス止め（ねじ止め）とを併
用するなどが考えられるが、羽根車は高速回転体である
から破損防止の観点からみると接着とビス止め（ねじ止
め）とを併用する方がより一層安全である。このように
密度が小さい耐熱性アルミ合金をカーボン繊維強化プラ
スチック複合材ＣＦＲＰで補強して遠心圧縮機の羽根車
に適用することは、鋳鋼、或いはチタン合金製の羽根車
と比較すると製造、加工コストおよび応答性（レスポン
ス）の観点からみて非常に優位で、遠心圧縮機の性能向
上と低コスト化の両方に大きな効果がある。In the case of a conventional centrifugal compressor impeller, which has a relatively low compression ratio of up to 3.5 and is often used as a supercharger for a large diesel engine, a single-stage centrifugal compressor that absorbs air. However, a high compression ratio has been required in response to higher engine performance. In the case of a centrifugal compressor having a compression ratio of more than 4.0, the centrifugal stress near the center of the back plate (up to about 2/3 in the radial direction from the center) occurs because the rotation speed of the impeller 01 increases. As the temperature increases, the temperature rises as a whole, and the temperature at the outlet of the compressed air reaches 200 ° C. or higher. Normally, in the case of a single-stage centrifugal compressor that sucks in such an atmosphere, the impeller 1 is made by shaving a melted / forged heat-resistant aluminum alloy in one piece. In many cases, Al-Cu-Mg-based JIS-A2618 alloy having properties is used. However, since the current heat-resistant aluminum alloy lacks strength in the temperature range exceeding 100 ° C, the rotation speed of the impeller 01 cannot be further increased, and the aging heat treatment (190 ° C x 10 to 20 hours or so) is not possible. ) Is a type of alloy that secures strength, and the strength decreases when heated for a long time in the temperature range exceeding the aging temperature. It is in. Therefore, in order to secure a high pressure ratio, there is a tendency to shift to a method in which the material of the impeller 1 is made of cast steel, titanium alloy, or the like, but the impeller 1 has a very complicated shape, so that heat resistance is high. Compared with the impeller made of aluminum alloy, the manufacturing and processing costs are significantly higher, and compared with heat-resistant aluminum alloy, cast steel or titanium alloy has a higher material density, which makes the centrifugal compressor heavier and responsive. Problems such as poor (response) are occurring. On the other hand, in the impeller of the present centrifugal compressor, in order to solve such problems, the impeller body 1 of the centrifugal compressor used as a supercharger for a large diesel engine is made of a heat-resistant aluminum alloy. The composite impeller has a structure in which a disc 6 made of a carbon fiber reinforced plastic composite material CFRP is attached to the outside of the back plate of the impeller body 1. in this way,
In the impeller of this centrifugal compressor, the impeller body 1 is made of a conventional heat-resistant aluminum alloy of the aging precipitation strengthening type, and the centrifugal stress due to rotation is large, and the temperature exceeds 100 ° C, and the temperature is about 180 ° C near the outlet. The disk 6 made of carbon fiber reinforced plastic composite material CFRP is attached to the outer side of the back plate of the impeller body 1 which is formed by, for example, direct bonding or bonding and screwing (screwing). However, from the viewpoint of preventing damage, it is even safer to use both adhesion and screw fixing (screw fixing) from the viewpoint of preventing damage. Applying the heat-resistant aluminum alloy having a low density to the impeller of the centrifugal compressor by reinforcing the heat-resistant aluminum alloy with the carbon fiber reinforced plastic composite material CFRP is more cost-effective than the impeller made of cast steel or titanium alloy. It is extremely superior from the viewpoint of responsiveness (response), and has a great effect on both performance improvement and cost reduction of the centrifugal compressor.
【００１２】羽根車本体１に用いられる時効析出強化型
の耐熱性アルミ合金としては、現在使用されている溶解
／鍛造耐熱性アルミ合金の中では最も耐熱性があるＪＩ
Ｓ−Ａ２０００系のＡｌ−Ｃｕ系、或いはＡｌ−Ｃｕ−
Ｍｇ系などがある。これらの耐熱性アルミ合金は時効温
度が１８０〜１９０℃程度で、少なくとも１８０℃以上
で長時間（１００時間以上）加熱されると強度が低下す
る。従って、総運転時間が１０万時間以上を目標として
いる遠心圧縮機では現在使用されている耐熱性アルミ合
金は安全性を見て１５０℃程度の温度領域までしか使用
することができないが、本遠心圧縮機の羽根車において
は回転による遠心応力が大きいうえに温度も１００℃を
越え耐熱性が要求されるアルミ合金製の羽根車の背板外
側にカーボン繊維強化プラスチック複合材ＣＦＲＰを張
り付ける構造としており、カーボン繊維強化プラスチッ
ク複合材ＣＦＲＰは密度が１．４〜１．７程度と耐熱性
アルミ合金よりも小さく、強度および剛性は耐熱性アル
ミ合金よりも大きいうえに、マトリックスをなす耐熱性
樹脂およびカーボン繊維の選択により２５０℃程度まで
は耐熱性アルミ合金よりも強度が高く、良好な特性を有
するものも多く開発されていて、このようなカーボン繊
維強化プラスチック複合材ＣＦＲＰとの複合構造の羽根
車とすることにより軽量で加工性が良く安価に製造可能
な耐熱性アルミ合金製の羽根車を大型のディーゼルエン
ジン用過給器として多く適用されている大気吸い込み型
の単段式の場合で従来の圧縮比３．５程度（最高温度；
１７０℃程度）までの適用範囲から圧力比を約５．０程
度（最高温度；２５０℃程度）まで上げることができ、
エンジンの性能向上の要求に対して幅広く対応すること
ができる。As the age-precipitation-strength heat-resistant aluminum alloy used for the impeller body 1, the most heat-resistant JI among the melting / forging heat-resistant aluminum alloys currently used is JI.
S-A2000 type Al-Cu type or Al-Cu- type
There are Mg type and the like. These heat resistant aluminum alloys have an aging temperature of about 180 to 190 ° C., and their strength decreases when heated at least 180 ° C. or more for a long time (100 hours or more). Therefore, the heat-resistant aluminum alloy currently used in the centrifugal compressor whose total operating time is set to 100,000 hours or more can be used only up to a temperature range of about 150 ° C for safety, but the main centrifugal In the impeller of the compressor, the centrifugal stress due to rotation is large, and the temperature is over 100 ° C, and the carbon fiber reinforced plastic composite material CFRP is attached to the outside of the back plate of the impeller made of aluminum alloy, which requires heat resistance. In addition, the carbon fiber reinforced plastic composite material CFRP has a density of 1.4 to 1.7, which is smaller than that of the heat-resistant aluminum alloy, and has strength and rigidity larger than that of the heat-resistant aluminum alloy, and the heat-resistant resin forming the matrix and Due to the selection of carbon fiber, many of them have higher strength than heat-resistant aluminum alloy up to about 250 ° C and have good characteristics. However, by using such an impeller having a composite structure with the carbon fiber reinforced plastic composite material CFRP, an impeller made of a heat-resistant aluminum alloy, which is lightweight, has good workability, and can be manufactured at low cost, is used for a large diesel engine. In the case of the air suction type single stage type that is often applied as a feeder, the conventional compression ratio is about 3.5 (maximum temperature;
It is possible to raise the pressure ratio to about 5.0 (maximum temperature: about 250 ° C) from the applicable range up to 170 ° C).
It can meet a wide range of demands for engine performance improvement.
【００１３】[0013]
【発明の効果】本発明に係る遠心圧縮機は前記のように
構成されており、軽量で加工性が良く安価に製造可能な
耐熱性アルミ合金製の羽根車の適用範囲を圧縮比５．０
程度（最高温度；２５０℃程度）まで上げることができ
るので、例えば大型のディーゼルエンジン用過給器など
としてエンジンの性能向上の要求に対して幅広く対応す
ることができるとともに、コスト的にも比較的安価で、
応答性（レスポンス）にも優れた遠心圧縮機を得ること
ができる。The centrifugal compressor according to the present invention is constructed as described above, and the range of application of the impeller made of a heat-resistant aluminum alloy, which is lightweight, has good workability and can be manufactured at low cost, has a compression ratio of 5.0.
Since the temperature can be increased to the maximum level (maximum temperature: about 250 ° C), it can meet a wide range of demands for engine performance improvement, for example, as a turbocharger for a large diesel engine, and is relatively costly. Cheap,
It is possible to obtain a centrifugal compressor having excellent responsiveness.
【図１】図１は本発明の実施の一形態に係る遠心圧縮機
の羽根車の断面図である。FIG. 1 is a sectional view of an impeller of a centrifugal compressor according to an embodiment of the present invention.
【図２】図２は従来の遠心圧縮機の羽根車の断面図であ
る。FIG. 2 is a sectional view of an impeller of a conventional centrifugal compressor.
１ 羽根車本体（ＪＩＳ−Ａ２６１８合金製） ２ ロータ軸 ３ ケーシング ４ ケーシング ５ 空気の流れ ６ 円板（カーボン繊維強化プラスチックＣＦＲＰ
製）1 Impeller main body (made of JIS-A2618 alloy) 2 Rotor shaft 3 Casing 4 Casing 5 Air flow 6 Disc (carbon fiber reinforced plastic CFRP
Made)
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 // Ｆ０２Ｃ 3/05 Ｆ０２Ｃ 3/05 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location // F02C 3/05 F02C 3/05
Claims (1)
において、上記羽根車本体の背面にカーボン繊維強化プ
ラスチック複合材を添着したことを特徴とする遠心圧縮
機。1. A centrifugal compressor whose impeller body is made of an aluminum alloy, wherein a carbon fiber reinforced plastic composite material is attached to the back surface of the impeller body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8004694A JPH09195987A (en) | 1996-01-16 | 1996-01-16 | Centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8004694A JPH09195987A (en) | 1996-01-16 | 1996-01-16 | Centrifugal compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09195987A true JPH09195987A (en) | 1997-07-29 |
Family
ID=11591005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8004694A Withdrawn JPH09195987A (en) | 1996-01-16 | 1996-01-16 | Centrifugal compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09195987A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008519933A (en) * | 2004-11-13 | 2008-06-12 | カミンズ・ターボ・テクノロジーズ・リミテッド | Compressor wheel |
| CN104314862A (en) * | 2014-10-17 | 2015-01-28 | 大连金山耐酸泵有限公司 | Impeller of resin-based carbon fiber composite material acid-resistant pump and manufacturing method thereof |
| US8998581B2 (en) | 2009-05-08 | 2015-04-07 | Nuovo Pignone S.P.A. | Composite shroud and methods for attaching the shroud to plural blades |
| US9797255B2 (en) | 2011-12-14 | 2017-10-24 | Nuovo Pignone S.P.A. | Rotary machine including a machine rotor with a composite impeller portion and a metal shaft portion |
| US9810235B2 (en) | 2009-11-23 | 2017-11-07 | Massimo Giannozzi | Mold for a centrifugal impeller, mold inserts and method for building a centrifugal impeller |
| US9816518B2 (en) | 2009-11-23 | 2017-11-14 | Massimo Giannozzi | Centrifugal impeller and turbomachine |
| US11162505B2 (en) | 2013-12-17 | 2021-11-02 | Nuovo Pignone Srl | Impeller with protection elements and centrifugal compressor |
-
1996
- 1996-01-16 JP JP8004694A patent/JPH09195987A/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008519933A (en) * | 2004-11-13 | 2008-06-12 | カミンズ・ターボ・テクノロジーズ・リミテッド | Compressor wheel |
| US8641380B2 (en) | 2004-11-13 | 2014-02-04 | Cummins Turbo Technologies Limited | Compressor wheel |
| US8998581B2 (en) | 2009-05-08 | 2015-04-07 | Nuovo Pignone S.P.A. | Composite shroud and methods for attaching the shroud to plural blades |
| US9810230B2 (en) | 2009-05-08 | 2017-11-07 | Nuovo Pignone Srl | Impeller for a turbomachine and method for attaching a shroud to an impeller |
| US9810235B2 (en) | 2009-11-23 | 2017-11-07 | Massimo Giannozzi | Mold for a centrifugal impeller, mold inserts and method for building a centrifugal impeller |
| US9816518B2 (en) | 2009-11-23 | 2017-11-14 | Massimo Giannozzi | Centrifugal impeller and turbomachine |
| US9797255B2 (en) | 2011-12-14 | 2017-10-24 | Nuovo Pignone S.P.A. | Rotary machine including a machine rotor with a composite impeller portion and a metal shaft portion |
| US11162505B2 (en) | 2013-12-17 | 2021-11-02 | Nuovo Pignone Srl | Impeller with protection elements and centrifugal compressor |
| CN104314862A (en) * | 2014-10-17 | 2015-01-28 | 大连金山耐酸泵有限公司 | Impeller of resin-based carbon fiber composite material acid-resistant pump and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20030401 |