JP2001090693A - Blower impeller and air conditioner - Google Patents
Blower impeller and air conditionerInfo
- Publication number
- JP2001090693A JP2001090693A JP27083099A JP27083099A JP2001090693A JP 2001090693 A JP2001090693 A JP 2001090693A JP 27083099 A JP27083099 A JP 27083099A JP 27083099 A JP27083099 A JP 27083099A JP 2001090693 A JP2001090693 A JP 2001090693A
- Authority
- JP
- Japan
- Prior art keywords
- wing
- blade
- blades
- impeller
- blower
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/384—Blades characterised by form
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (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、空気調和機、その
他機器等の斜流送風機あるいは軸流送風機に用いられる
羽根車に関するもので、特に翼の枚数とその形状に係る
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an impeller used for an oblique flow fan or an axial flow fan of an air conditioner or other equipment, and more particularly to the number and shape of blades.
【０００２】[0002]
【従来の技術】従来の斜流送風機の羽根車は、図１３お
よび図１４に示すような構造で、気体が羽根車内を回転
軸に対して傾斜して流す形式の送風機である。すなわ
ち、平面図である図１３のように略円錐台形状のハブ２
０に複数枚、少なくとも３枚の翼１９を設けて斜流送風
機の羽根車１８を構成し、そして回転軌跡は図１４に示
すようになる。そして、送風機としては、この羽根車１
８をケ−シングに納め、、ハブ２０に回転軸を結合させ
たモ−タで羽根車１８を回転させることで送風作用を生
じる。この翼の代表自乗平均半径位置での翼の弦長Ｌと
翼の半径方向の代表実長さｂの比であるアスペクト比ｂ
／Ｌ≦１の範囲では、翼１９の外周側の翼の弦長はハブ
側の翼の弦長より長く、また充分な静圧を得るために翼
枚数は少なくとも３枚以上から構成されていた。さら
に、翼１９の前縁２１は、対数螺旋などの曲線から構成
されていた。2. Description of the Related Art A conventional impeller of a mixed flow blower has a structure as shown in FIGS. 13 and 14, and is of a type in which gas flows inside the impeller at an angle to a rotation axis. That is, as shown in a plan view of FIG.
A plurality of, or at least three, blades 19 are provided on a zero to constitute an impeller 18 of a mixed flow blower, and the rotation trajectory is as shown in FIG. And as the blower, this impeller 1
8 is housed in a casing, and the impeller 18 is rotated by a motor having a rotating shaft coupled to a hub 20 to produce a blowing operation. Aspect ratio b, which is the ratio of the chord length L of the wing at the representative root mean square position of the wing to the representative actual length b of the wing in the radial direction.
In the range of / L ≦ 1, the chord length of the wing on the outer peripheral side of the wing 19 is longer than the chord length of the wing on the hub side, and the number of wings is at least three or more in order to obtain a sufficient static pressure. . Further, the leading edge 21 of the wing 19 was constituted by a curve such as a logarithmic spiral.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記従
来の構成において、アスペクト比ｂ／Ｌ≦１の範囲で、
翼枚数は少なくとも３枚以上からなる羽根車の構成で
は、回転する翼１９の外周付近で発生する矢印で示す翼
端渦Ｄが、その翼１９より剥がれて、次に来る後方の翼
１９の流入空気の状態に対して大きい影響を与えてい
た。すなわち、翼１９は、前方の翼から発生し剥離した
翼端渦Ｄに大きい影響を受け、大きく乱れた流入空気を
受けて空力仕事をしていた。そのため、低騒音化と静圧
特性の向上には、翼端渦Ｄの影響のために限界があっ
た。However, in the above-mentioned conventional structure, the aspect ratio b / L ≦ 1
In the configuration of the impeller having at least three or more blades, the blade tip vortex D indicated by an arrow generated near the outer periphery of the rotating blade 19 is peeled off from the blade 19 and the inflow of the next rear blade 19 comes. It had a great effect on the air condition. That is, the wing 19 was greatly affected by the separated wing tip vortex D generated from the front wing and received a highly disturbed inflow air to perform aerodynamic work. Therefore, there is a limit in reducing noise and improving static pressure characteristics due to the influence of the tip vortex D.
【０００４】更に、翼１９の枚数が２枚より３枚や４枚
と多い方が、羽根車が占める体積が大きく、羽根車の製
造コストが必然的に高価になっていた。Further, when the number of blades 19 is larger than three or four, the volume occupied by the impeller is large, and the manufacturing cost of the impeller is inevitably high.
【０００５】本発明は、このような従来の課題を解決す
るものであり、送風機羽根車の低騒音化と静圧の向上お
よび羽根車の製造コストを安くすることを目的とする。An object of the present invention is to solve such a conventional problem, and it is an object of the present invention to reduce the noise of a blower impeller, improve the static pressure, and reduce the manufacturing cost of the impeller.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するため
に本発明は、ハブと、このハブに設けた２枚の翼とを備
え、前記翼は、翼の代表自乗平均半径位置での翼の弦長
Ｌと翼の半径方向の代表実長さｂの比であるアスペクト
比ｂ／Ｌ≦１の範囲に設定し、かつ前記範囲のアスペク
ト比の翼枚数を２枚に構成してなるものである。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention comprises a hub and two blades provided on the hub, wherein the blade is located at a representative root mean square radius position of the blade. Is set in a range of an aspect ratio b / L ≦ 1, which is a ratio of a chord length L of the blade to a representative actual length b in the radial direction of the blade, and the number of blades having an aspect ratio in the range is two. It is.
【０００７】上記構成によって、上記したアスペクト比
の翼でありながら、翼同士のピッチが充分に広いため
に、翼の外周付近の負圧面に発生する翼端渦が翼より剥
がれ流れ去り、次に回転してくる後方の翼の流入空気の
状態に与える影響が軽減される。そして、各翼が迎える
流入空気は乱れが少なくて円滑になり、後方の翼での剥
離と失速などの不安定現象が生じにくくなり、翼での低
騒音化と靜圧の向上を図ることができるものである。[0007] With the above configuration, even though the blades have the above-described aspect ratio, the pitch between the blades is sufficiently large, so that the tip vortex generated on the negative pressure surface near the outer periphery of the blade peels off from the blade, and then flows off. The influence of the rotating rear wing on the state of the incoming air is reduced. The inflow air received by each wing is smooth with little turbulence, and it is difficult for unstable phenomena such as separation and stall at the rear wing to occur, and it is possible to reduce noise and improve static pressure at the wing. You can do it.
【０００８】また、翼の枚数が２枚の方が３枚や４枚と
多いより、羽根車の占める体積を小さくでき、羽根車の
製造コストを安価にできるものである。In addition, the volume of the impeller can be reduced, and the manufacturing cost of the impeller can be reduced, as compared with the case where the number of blades is two, that is, three or four.
【０００９】[0009]
【発明の実施の形態】本発明の請求項１に記載の発明
は、ハブと、このハブに設けた２枚の翼とを備え、前記
翼は、翼の代表自乗平均半径位置での翼の弦長Ｌと翼の
半径方向の代表実長さｂの比であるアスペクト比ｂ／Ｌ
≦１の範囲に設定し、かつ前記範囲のアスペクト比の翼
枚数を２枚に構成してなるものである。The invention according to claim 1 of the present invention comprises a hub and two wings provided on the hub, wherein the wing is located at a position of a representative root mean square radius of the wing. Aspect ratio b / L, which is the ratio of chord length L to representative actual length b in the radial direction of the wing
.Ltoreq.1, and the number of blades having an aspect ratio in the above range is set to two.
【００１０】この構成によって、翼同士のピッチが充分
に広いために、翼の外周付近の負圧面に発生する翼端渦
が翼より剥がれ流れ去り、次に回転してくる後方の翼の
流入空気の状態に与える影響が少ない。このように互い
に２枚の翼が、翼端渦の影響を受けないので、各翼が迎
える流入空気は乱れが少なく円滑になり、翼での剥離と
失速などの不安定現象が生じにくくなる。[0010] With this configuration, since the pitch between the blades is sufficiently large, the tip vortex generated on the suction surface near the outer periphery of the blade is peeled off from the blade and flows away, and the air flowing into the rearward rotating blade subsequently flows. Little effect on the condition of Since the two blades are not affected by the tip vortex in this way, the inflow air received by each blade is smooth with little turbulence, and unstable phenomena such as separation and stall at the blades are less likely to occur.
【００１１】更に、羽根枚数が２枚の方が３枚や４枚と
多いより、羽根車が占める体積が小さくなる作用を有す
る。Further, there is an effect that the volume occupied by the impeller is smaller when the number of blades is two than when the number is three or four.
【００１２】また、請求項２記載の発明は、請求項１記
載において翼を、翼の半径方向断面で、翼の代表自乗平
均半径位置付近より外周側は風上側に対して凹形状の曲
線形状にし、翼の代表自乗平均半径位置付近よりハブ側
は風上側に対して凸形状の曲線形状にしてなるものであ
る。According to a second aspect of the present invention, in the first aspect, the wing has a curved cross-section in a radial cross-section of the wing which is concave with respect to the windward side on the outer periphery side near the representative root mean square position of the wing. The hub side from the vicinity of the representative root mean square position of the blade has a curved shape convex toward the windward side.
【００１３】上記構成において、翼の凹形状の曲線形状
により、翼の回転方向に対して、翼自体が流線型とな
る。これにより、翼の回転騒音であるｎＺ音が、翼の枚
数が２枚であっても、乱流騒音の音圧レベルより低くな
り、羽根車全体として異常音がなくなる作用を有する。In the above configuration, the concave curved shape of the blade makes the blade itself streamlined in the rotation direction of the blade. Accordingly, even if the number of blades is two, the nZ sound, which is the rotational noise of the blades, is lower than the sound pressure level of the turbulent noise, and the impeller has the effect of eliminating abnormal sounds as a whole.
【００１４】また、請求項３に記載の発明は、請求項１
記載において翼の前縁と外周の交点に３角形状の翼の１
点を重ね、かつ前記前縁に３角形状の翼の１辺を密着し
て３角形状の翼を設けてなるものである。[0014] The invention according to claim 3 provides the invention according to claim 1.
In the description, a triangular wing 1
A triangular wing is provided by overlapping points and closely contacting one side of a triangular wing with the leading edge.
【００１５】上記構成によって、３角形状の翼の先端を
起点として翼端渦が、翼の負圧面に円錐状に生成し、翼
の途中で剥離して流れ去る。この３角形状の翼は、その
先端で翼端渦の生成を規定する作用を有するため、この
翼端渦が翼の外周付近の負圧面に発生する状態と、翼よ
り剥がれ流れ去る状態の根本を規定することになり、後
方の翼への翼端渦の影響を最小限にする作用を有する。
従って、翼同士のピッチが充分に広い２枚翼でも次に回
転してくる後方の翼の流入空気の状態を、更により乱れ
の少ない円滑な最適状態にすることができるものであ
る。そして、後方の翼が翼端渦の影響を更に受けにくく
なり、各翼が迎える流入空気は最も円滑になり、後方の
翼での剥離と失速などの不安定現象が更に生じにくくな
る。With the above configuration, the tip vortex is generated in a conical shape on the negative pressure surface of the wing starting from the tip of the triangular wing, and separates and flows away in the middle of the wing. Since this triangular blade has the effect of regulating the generation of a tip vortex at its tip, the root vortex is generated in a state where the wing vortex is generated on the suction surface near the outer periphery of the blade and in a state where it is peeled off from the wing and flows away. Has the effect of minimizing the effect of the tip vortex on the aft wing.
Therefore, even with the two blades having sufficiently large pitches between the blades, the state of the inflowing air of the rearwardly rotating rear blade can be set to a smooth optimal state with less disturbance. Then, the rear wings are less susceptible to the influence of the tip vortex, and the inflow air received by each wing is smoothest, so that unstable phenomena such as separation and stall at the rear wings are further reduced.
【００１６】また、請求項４記載の発明は、 請求項１
〜請求項３記載のいずれか１項に記載の送風機羽根車を
有する送風機を、熱交換器を有する室外機に設けた空気
調和機である。[0016] Further, the invention according to claim 4 is as follows.
An air conditioner in which the blower having the blower impeller according to any one of claims to 3 is provided in an outdoor unit having a heat exchanger.
【００１７】上記構成において、送風機により室外機は
静かに仕事をするとともに、製造上および設計上におけ
るコスト面でも有利になる。In the above configuration, the outdoor unit works quietly by the blower, and is advantageous in terms of manufacturing and design costs.
【００１８】[0018]
【実施例】以下本発明の実施例について図１〜図１２を
参照して説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.
【００１９】[0019]
【実施例１】図１〜図９は、本発明の送風機羽根車の実
施例１を示すもので、図１は斜流送風機に使用した時の
羽根車の回転軌跡図で、図２は同平面図で、図３は同送
風機羽根車を代表自乗平均半径位置で切り展開した図
で、翼として厚翼を適用した場合である。図４は同送風
機羽根車を代表自乗平均半径位置で切り展開した図で、
翼として厚さ一定の薄翼を適用した場合である。図５は
同送風機羽根車の動作状況を示す模式図である。図６は
同送風機羽根車の性能を示す特性実験の特性図で、横軸
にアスペクト比ｂ／Ｌを取り、縦軸に４１ｄＢでの風量
を示している。図７は同送風機羽根車の２枚翼と従来の
送風機羽根車における３枚翼の静圧特性を比較した特性
図で、図８は同送風機羽根車を軸流送風機に使用した時
の回転軌跡図、図９は同送風機羽根車の平面図である。1 to 9 show a first embodiment of a blower impeller according to the present invention. FIG. 1 is a rotation locus diagram of the impeller when used in a mixed flow blower, and FIG. FIG. 3 is a plan view in which the blower impeller is cut and developed at a representative root mean square radius position, in which a thick blade is applied as a blade. FIG. 4 is a diagram in which the blower impeller is cut and developed at a representative root mean square position.
This is a case where a thin wing having a constant thickness is applied as the wing. FIG. 5 is a schematic diagram showing an operation state of the blower impeller. FIG. 6 is a characteristic diagram of a characteristic experiment showing the performance of the blower impeller, where the horizontal axis represents the aspect ratio b / L, and the vertical axis represents the airflow at 41 dB. FIG. 7 is a characteristic diagram comparing the static pressure characteristics of two blades of the fan impeller and three blades of the conventional fan impeller, and FIG. 8 is a rotation locus when the fan impeller is used as an axial fan. FIG. 9 and FIG. 9 are plan views of the blower impeller.
【００２０】図１において、斜流送風機の羽根車１は、
略円錐台形状のハブ３の外周面に同一形状の２枚の翼２
を相対向させて設けている。前記それぞれの翼２は、翼
の代表自乗平均半径位置での翼２の弦長Ｌと翼２の半径
方向の代表実長さｂの比であるアスペクト比ｂ／Ｌ≦１
の範囲に設定し、かつ前記範囲に設定したアスペクト比
の翼枚数を２枚に構成してなるものである。In FIG. 1, the impeller 1 of the mixed flow blower is
Two blades 2 of the same shape are provided on the outer peripheral surface of a hub 3 having a substantially truncated cone shape.
Are provided facing each other. Each of the wings 2 has an aspect ratio b / L ≦ 1 which is a ratio of a chord length L of the wing 2 at a representative root mean square radius position of the wing 2 and a representative actual length b of the wing 2 in the radial direction.
And the number of blades having the aspect ratio set in the above range is set to two.
【００２１】ここで、以下に上記構成につき更に説明す
ると、ハブ３の代表ハブ径ｒは、ｒ＝（ｒ１＋ｒ２）／
２で規定するものとする。羽根車１の代表半径Ｒは、Ｒ
＝（Ｒ１＋Ｒ２）／２で規定するものとする。同じく代
表自乗平均半径Ｒｒは、Ｒｒ＝√（（Ｒ２＋ｒ２）／
２）で規定する。図１で、羽根車１の中心線ＣＣを、中
心線として、代表自乗平均半径Ｒｒを通る円錐の頂点が
Ｐ１であり、その円錐の線ＡＡで翼２を切って展開した
のが、図３、図４であり、その弦長がＬである。この線
ＡＡは、平面図の図２では、曲線ＡＡに見える。翼２の
半径方向の代表実長さｂは、図１では代表ハブ径ｒの位
置と代表半径Ｒの位置を結ぶ翼２のスパン方向の実長さ
である。Here, the above configuration will be further described below. The representative hub diameter r of the hub 3 is r = (r1 + r2) /
It shall be specified in 2. The representative radius R of the impeller 1 is R
= (R1 + R2) / 2. Similarly, the representative root mean square radius Rr is given by Rr = √ ((R2 + r2) /
Specified in 2). In FIG. 1, the center line CC of the impeller 1 is set as the center line, the vertex of the cone passing through the representative root mean square Rr is P1, and the wing 2 is cut along the line AA of the cone to expand the blade. 4 and the chord length is L. This line AA appears as a curve AA in FIG. 2 of the plan view. In FIG. 1, the representative actual length b in the radial direction of the blade 2 is the actual length in the span direction of the blade 2 connecting the position of the representative hub diameter r and the position of the representative radius R.
【００２２】そして、図５のように斜流送風機の羽根車
１は、そのハブ３にモ−タ１２のシャフトを固定して、
適切なケ−シング１１に納め、モ−タ１２により回転さ
せることで矢印で示す送風作用を生じる。この時、図１
において空気の殆どは、翼２の前縁４より流入し、後縁
５より流出して空力仕事を行う。Then, as shown in FIG. 5, the impeller 1 of the mixed flow blower has the shaft of the motor 12 fixed to the hub 3 thereof.
When put in an appropriate casing 11 and rotated by the motor 12, a blowing action indicated by an arrow is generated. At this time, FIG.
, Most of the air flows in through the leading edge 4 of the wing 2 and out through the trailing edge 5 to perform aerodynamic work.
【００２３】ここでは、図１において斜流送風機羽根車
１の代表自乗平均半径位置での弦長Ｌと翼の半径方向の
代表実長さｂとの比ｂ／Ｌをアスペクト比と言う。In FIG. 1, the ratio b / L of the chord length L at the representative root mean square position of the mixed flow blower impeller 1 to the representative actual length b of the blade in the radial direction is referred to as an aspect ratio.
【００２４】図６は、翼枚数が２枚の２枚翼においてア
スペクト比ｂ／Ｌと、４１ｄＢでの風量の関係を示した
特性図である。この図６は、φ４１５ｍｍの羽根車１の
実験デ−タにより作成したものである。この図６より明
らかなように、アスペクト比ｂ／Ｌ≦１の範囲では、４
１ｄＢ当たりの風量が飽和しているが、アスペクト比ｂ
／Ｌ≧１の範囲では風量は急激に減少していることが判
る。FIG. 6 is a characteristic diagram showing the relationship between the aspect ratio b / L and the airflow at 41 dB for two blades having two blades. FIG. 6 is created from experimental data of the impeller 1 having a diameter of 415 mm. As is apparent from FIG. 6, in the range of the aspect ratio b / L ≦ 1, 4
Although the air volume per 1dB is saturated, the aspect ratio b
It can be seen that the air volume sharply decreases in the range of / L ≧ 1.
【００２５】従って、本発明では、ハブ３に２枚の翼２
を設けてなる送風機羽根車１にあって、翼２は、翼２の
代表自乗平均半径位置での翼２の弦長Ｌと翼２の半径方
向の代表実長さｂの比であるアスペクト比ｂ／Ｌ≦１の
範囲に設定し、かつ前記アスペクト比の翼枚数が２枚の
斜流送風機羽根車１を構成するものである。Therefore, according to the present invention, the two blades 2
, The blade 2 has an aspect ratio which is a ratio of a chord length L of the blade 2 at a representative root mean square radius position of the blade 2 and a representative actual length b in the radial direction of the blade 2. The ratio is set to b / L ≦ 1, and the number of blades of the aspect ratio is 2 to constitute the mixed flow fan impeller 1.
【００２６】上記構成によって、アスペクト比ｂ／Ｌ≦
１の範囲に設定した翼でありながら、翼２同士のピッチ
が充分に広いために、翼２の外周付近、すなわちチップ
６付近の負圧面８に発生する翼端渦Ｄが翼２より剥がれ
流れ去り、次に回転してくる後方の翼２の流入空気の状
態に与える影響が非常に少ない。このように２枚の翼２
が、互いに翼端渦Ｄの影響を受けないので、各翼２が迎
える流入空気は乱れが少なく円滑になり、翼２での剥離
などの不安定現象が生じにくくなる。これにより、羽根
車１での同一騒音当たりの風量の向上を図ることができ
る。これを、裏付けているのが上記した斜流送風機の羽
根車１の特性図６である。With the above configuration, the aspect ratio b / L ≦
1, the pitch between the blades 2 is sufficiently large, so that the tip vortex D generated on the suction surface 8 near the outer periphery of the blade 2, that is, near the tip 6, is peeled off from the blade 2. The influence on the state of the inflowing air of the rear wing 2 that is left and then rotates next is very small. In this way, two wings 2
However, since the wing tip vortex D does not affect each other, the inflow air received by each wing 2 is smooth with little turbulence, and unstable phenomena such as separation on the wing 2 are less likely to occur. As a result, it is possible to improve the air volume per impulse noise in the impeller 1. This is supported by the characteristic diagram 6 of the impeller 1 of the above-described mixed flow blower.
【００２７】また、前方の翼による後方の翼２に対する
翼端渦Ｄが、このように与える影響が少ないので、後方
の翼２での流れの失速などの不安定現象を生じにくくな
り、羽根車１の静圧特性が向上する。これは、図７に示
す斜流送風機羽根車における２枚の翼と３枚の翼の場合
の静圧特性を比較した特性曲線で、明らかにできるもの
である。この図７は、直径φ４１５の斜流送風機羽根車
を、回転数７１２ｒｐｍで作動させ、開放風量点（静圧
が０）を２９．５ｍ3／ｍｉｎとした時の静圧特性であ
る。開放風量点から風量点Ｑ１まで２枚翼の方が静圧が
強く、風量点Ｑ１からＱ２までは、２枚翼と３枚翼とも
静圧が同等で、風量点Ｑ２から締め切り風量点（風量が
０）までの範囲では、若干３枚翼の方が静圧が強いこと
が判る。ただ、前記した風量点Ｑ２から締め切り風量点
（風量が０）までの範囲で送風機を動作させる機器、例
えば空気調和機では、それ程問題にならないものであ
る。すなわち、空気調和機では、暖房の空調において通
常、開放風量点から風量点Ｑ２付近迄で使用され、頻繁
に生じない熱交換器への着霜を除去する除霜運転時だ
け、風量点Ｑ２から締め切り風量点（風量が０）で動作
することになり、機器設計上あまり重要な意味を持たな
いので、この範囲で３枚翼の羽根車より静圧が弱くても
問題にならないものである。Further, since the tip vortex D of the front wing with respect to the rear wing 2 has a small influence on the rear wing 2, unstable phenomena such as a stall of the flow in the rear wing 2 are less likely to occur. 1 improves the static pressure characteristics. This can be clarified by a characteristic curve comparing the static pressure characteristics of two blades and three blades in the mixed flow fan impeller shown in FIG. FIG. 7 shows static pressure characteristics when the mixed flow blower impeller having a diameter of 415 is operated at a rotation speed of 712 rpm and the open air flow point (static pressure is 0) is 29.5 m 3 / min. From the open air flow point to the air flow point Q1, the two blades have stronger static pressure, and from the air flow points Q1 to Q2, the two blades and the three blades have the same static pressure, and the airflow point Q2 to the cutoff airflow point (airflow In the range up to 0), it can be seen that the static pressure is slightly higher for the three blades. However, a device that operates the blower within the range from the above-mentioned airflow point Q2 to the cutoff airflow point (airflow is 0), such as an air conditioner, does not cause much problem. That is, in the air conditioner, the air conditioner for heating is normally used from the open air volume point to the vicinity of the air volume point Q2, and only when the defrosting operation for removing the frost on the heat exchanger that does not frequently occur, the air volume is reduced from the air volume point Q2. Since it operates at the cutoff airflow point (airflow is 0) and has no significant significance in equipment design, there is no problem even if the static pressure is weaker than that of the three-blade impeller in this range.
【００２８】更に、羽根枚数が２枚の方が３枚や４枚と
多いものより、羽根車が占める体積が小さく、羽根車の
製造コストが必然的に安くなる効果を奏するものであ
る。Furthermore, the volume of the impeller is smaller when the number of blades is two, which is larger than that when the number of blades is three or four, and the manufacturing cost of the impeller is inevitably reduced.
【００２９】また図１で、羽根車の中心線ＣＣを中心線
として、代表自乗平均半径Ｒｒを通る円錐の線ＡＡの頂
点がＰ１であり、その円錐の線ＡＡで翼を切って展開し
た図が、図３、図４である。図３はこの翼断面に、翼２
の前縁４が円弧状で、後縁５が尖った厚翼７を用いた例
であり、翼２の圧力面９と負圧面８より構成されてい
る。図４は、この翼断面に翼２の厚さが一定の薄い薄翼
１０を用いた例であり、翼２の圧力面９ａと負圧面８ａ
から構成されている。In FIG. 1, the vertex of the line AA of the cone passing through the representative root mean square Rr is P1 with the center line CC of the impeller as the center line, and the wing is cut off along the line AA of the cone. 3 and 4. FIG. 3 shows the wing 2
This is an example in which a thick blade 7 having an arc-shaped front edge 4 and a sharp rear edge 5 is used, and includes a pressure surface 9 and a suction surface 8 of the blade 2. FIG. 4 shows an example in which a thin thin blade 10 having a constant thickness of the blade 2 is used for the blade cross section. The pressure surface 9a and the suction surface 8a of the blade 2 are shown in FIG.
It is composed of
【００３０】次に、本発明の送風機羽根車を軸流送風機
に実施した例を説明する。すなわち、回転軌跡図である
図８と平面図の図９は、羽根枚数が２枚の軸流送風機の
羽根車１５を示している。ここで、代表自乗平均半径Ｒ
ｒでの位置を線ＢＢが示している。この軸流送風機の羽
根車１５においても、翼１４の代表自乗平均半径位置で
の翼１４の弦長Ｌと翼１４の半径方向の代表実長さｂの
比であるアスペクト比ｂ／Ｌ≦１の範囲に設定し、かつ
前記範囲に設定したアスペクト比の翼枚数を２枚に構成
してなるものである。なお、図中１３はハブである。Next, an example in which the fan impeller of the present invention is applied to an axial fan will be described. That is, FIG. 8 which is a rotation locus diagram and FIG. 9 which is a plan view show an impeller 15 of an axial blower having two blades. Here, the representative root mean square radius R
Line BB indicates the position at r. Also in the impeller 15 of this axial blower, the aspect ratio b / L ≦ 1 which is the ratio of the chord length L of the blade 14 at the representative root mean square position of the blade 14 to the representative actual length b of the blade 14 in the radial direction. And the number of blades having the aspect ratio set in the above range is set to two. In the figure, reference numeral 13 denotes a hub.
【００３１】上記構成において、詳細に説明するまでも
なく、軸流送風機の羽根車に使用した場合でも図１の斜
流送風機羽根車と同様の作用と効果を奏するものであ
る。In the above-mentioned structure, the same operation and effect as those of the mixed flow blower impeller shown in FIG. 1 can be obtained even when used in the impeller of the axial flow blower, without being described in detail.
【００３２】[0032]
【実施例２】図１０は本発明の送風機羽根車における実
施例２の発明で、上記した図２における半径方向断面で
あるＢＢ線での断面と同じように表した斜流送風機の羽
根車の断面図で、図１１は同斜流送風機の羽根車の騒音
スペクトラムを示している。Embodiment 2 FIG. 10 shows the invention of Embodiment 2 in the blower impeller of the present invention. The impeller of the mixed flow blower shown in the same manner as the cross section along the line BB which is the radial cross section in FIG. FIG. 11 is a sectional view showing a noise spectrum of the impeller of the mixed flow fan.
【００３３】この発明は、実施例１の発明とは翼の形状
が異なるだけで、それ以外の同一構成および作用効果を
奏する部分には同一符号を付して詳細な説明を省略し、
異なる点を中心に説明する。The present invention differs from the first embodiment only in the shape of the wing, and the other parts having the same structure and effect are denoted by the same reference numerals and detailed description thereof is omitted.
The different points will be mainly described.
【００３４】羽根車１６は、翼２の代表自乗平均半径Ｒ
ｒを通る線ＡＡ付近よりチップ６側は風上側に対して、
翼２の形状を凹形状で曲線形状にし、代表自乗平均半径
Ｒｒを通る線ＡＡ付近よりハブ３側は風上側に対して凸
形状の曲線形状をした翼２を、ハブ３に相対向して２枚
設けてなる斜流送風機羽根車を構成するものである。ま
た、翼２の負圧面８ｂと圧力面９ｂから構成されてい
る。The impeller 16 has a representative root mean square radius R of the blade 2.
r near the line AA passing through r, the tip 6 side is on the windward side,
The shape of the wing 2 is concave and curved, and the wing 2 having a curved shape convex toward the windward side from the vicinity of a line AA passing through the representative root mean square radius Rr is opposed to the hub 3. It constitutes a mixed flow blower impeller comprising two sheets. Further, the airfoil 2 includes a negative pressure surface 8b and a pressure surface 9b.
【００３５】上記構成によって、翼２の代表自乗平均半
径Ｒｒを通る線ＡＡ付近より外周側は風上側に対して凹
形状の曲線形状であるため、羽根車１６の回転方向に対
して、翼２自体が流線型となる。これで、翼２の回転騒
音であるｎＺ音が、羽根枚数が２枚の２枚翼であって
も、乱流騒音の音圧レベルより低くなり、羽根車全体と
して異常音がなくなり、実聴感も良好である。この効果
を示したのが図１１である。According to the above configuration, the outer peripheral side from the vicinity of the line AA passing through the representative root mean square radius Rr of the blade 2 has a concave curved shape with respect to the windward side. Itself becomes streamlined. As a result, the nZ sound, which is the rotational noise of the wing 2, is lower than the sound pressure level of the turbulent noise, even if the number of blades is two, and the impeller as a whole has no abnormal sound. Is also good. FIG. 11 shows this effect.
【００３６】図１１は、φ４１５の翼に前縁が円弧状
で、後縁が尖った翼型を用いた斜流送風機羽根車を回転
数７２０ｒｐｍで作動させて、風量が２９．８ｍ３／ｍ
ｉｎとした場合の騒音スペクトラムである。乱流騒音で
ある１ｋＨｚ近傍の音圧レベルに比較して、翼２の回転
騒音である１ｎＺ音とその高調波成分の２ｎＺ、３ｎ
Ｚ、４ｎＺ音ともの音圧レベルが低いのが明確に示され
ている。FIG. 11 shows that a mixed flow blower impeller using an airfoil with a leading edge of a circular arc and a sharpened trailing edge is operated at a rotational speed of 720 rpm, and the air volume is 29.8 m3 / m.
This is a noise spectrum when “in” is set. Compared to the sound pressure level near 1 kHz which is turbulent noise, 1nZ sound which is the rotational noise of the wing 2 and its harmonic components 2nZ and 3n
It is clearly shown that the sound pressure levels of both the Z and 4nZ sounds are low.
【００３７】なお、上記実施例では斜流送風機に使用し
た例で説明をしたが、この構成と効果は、軸流送風機羽
根車でも同様のことが言える。In the above-described embodiment, an example in which the present invention is applied to a mixed flow blower has been described. However, the same structure and effect can be applied to an axial blower impeller.
【００３８】[0038]
【実施例３】図１３は本発明の送風機羽根車における実
施例３の発明で、斜流送風機の羽根車の平面図である。
この発明は、実施例１の発明とは翼の形状が異なるだけ
で、それ以外の同一構成および作用効果を奏する部分に
は同一符号を付して詳細な説明を省略し、異なる点を中
心に説明する。Third Embodiment FIG. 13 is a plan view of an impeller of a mixed flow blower according to a third embodiment of the present invention in a blower impeller of the present invention.
The present invention differs from the first embodiment only in the shape of the wing, and other parts having the same configuration and operation and effect are denoted by the same reference numerals, and detailed description thereof will be omitted. explain.
【００３９】斜流送風機の羽根車１８は、３角形状の翼
１７を、主翼になる翼２の前縁４とチップ６の交点に一
点を重ね、かつ翼２の前縁４に３角形状の翼１７の一辺
を密着して一体に設けた羽根枚数が２枚の翼からなるも
のである。The impeller 18 of the mixed flow blower has a triangular wing 17, one point overlapping the intersection of the leading edge 4 of the wing 2 to be the main wing and the tip 6, and a triangular wing 17 on the leading edge 4 of the wing 2. The number of blades provided integrally with one side of the wing 17 in close contact is made up of two wings.
【００４０】上記構成によって、３角形状の翼１７の先
端を起点として翼端渦Ｄが、翼の負圧面に円錐状に生成
し、翼の途中で剥離して流れ去る状況が判る。この３角
形状の翼１７は、その先端で翼端渦Ｄの生成を規定する
ものであるため、この翼端渦Ｄが翼２のチップ６付近の
負圧面に発生する状態と、翼２より剥がれ流れ去る状態
の根本を規定することになり、後方の翼２への翼端渦Ｄ
の影響を最小限にすることができる。それで、アスペク
ト比ｂ／Ｌ≦１の範囲に設定した翼でありながら、翼２
同士のピッチが充分に広い２枚翼でも、次に回転してく
る後方の翼２の流入空気の状態を、より乱れの少ない円
滑な最適状態にすることができるのもである。相対的に
後方の翼２は、翼端渦Ｄの影響を更に非常に受けにくく
なるので、各翼が迎える流入空気は最も円滑になり、翼
での剥離と失速などの不安定現象が、更に生じにくくな
る。これにより、更なる翼での低騒音化と静圧の向上を
図ることができる。With the above configuration, it can be seen that the tip vortex D is generated in a conical shape on the negative pressure surface of the wing starting from the tip of the triangular wing 17 and separates and flows away in the middle of the wing. Since the triangular blade 17 defines the generation of the tip vortex D at its tip, the state in which the tip vortex D is generated on the suction surface near the tip 6 of the wing 2 and the state of the wing 2 It defines the root of the state of peeling and flowing away, and the tip vortex D to the rear wing 2
Can be minimized. Therefore, while the wing is set in the range of the aspect ratio b / L ≦ 1, the wing 2
Even if the two blades have a sufficiently wide pitch between them, the state of the inflowing air of the rear blade 2 rotating next can be set to a smooth optimal state with less disturbance. The relatively rear wing 2 is much less likely to be affected by the tip vortex D, so that the inflow air received by each wing is smoothest, and unstable phenomena such as separation and stalling at the wing are further reduced. Less likely to occur. As a result, it is possible to further reduce noise on the blades and improve static pressure.
【００４１】なお、上記実施例では斜流送風機に使用し
た例で説明をしたが、この構成と効果は、軸流送風機羽
根車でも同様のことが言える。In the above embodiment, an example in which the present invention is applied to a mixed flow blower has been described. However, the same structure and effect can be applied to an axial blower impeller.
【００４２】また、実施例４の発明として図示はしてい
ないが、上記実施例１〜３で説明した各発明の送風機羽
根車を、室外機と室内機に配管で接続した冷凍サイクル
の回路構成部材を分離して内装したセパレート型の空気
調和機における室外機の送風機に使用するものである。Although not shown as the invention of the fourth embodiment, the circuit configuration of a refrigeration cycle in which the blower impellers of the inventions described in the first to third embodiments are connected to the outdoor unit and the indoor unit by piping. It is used as a blower of an outdoor unit in a separate type air conditioner in which members are separated and installed.
【００４３】上記構成の空気調和機によれば、室外機の
熱交換器へ送風する送風機により、室外機から発する騒
音を従来より低下できるとともに、性能も向上でき、さ
らに安価にできるものである。According to the air conditioner having the above structure, the noise generated from the outdoor unit can be reduced, the performance can be improved, and the cost can be further reduced by the blower that blows air to the heat exchanger of the outdoor unit.
【００４４】[0044]
【発明の効果】上記実施例から明らかなように、本発明
の請求項１に記載の発明は、ハブと、このハブに設けた
２枚の翼とを備え、前記翼は、翼の代表自乗平均半径位
置での翼の弦長Ｌと翼の半径方向の代表実長さｂの比で
あるアスペクト比ｂ／Ｌ≦１の範囲に設定し、かつ前記
範囲のアスペクト比の翼枚数を２枚に構成してなるもの
で、互いに翼同士が、一方の翼の翼端渦の影響を受けな
いので、各翼が迎える流入空気は乱れが少なく円滑にな
り、翼での剥離と失速等の不安定現象が生じにくく、翼
での低騒音化と静圧の向上を図ることができる。また、
羽根車が占める体積が小さく、製造コストを安価にでき
る。As is apparent from the above embodiment, the invention according to claim 1 of the present invention includes a hub and two blades provided on the hub, wherein the blade is a representative square of the blade. The aspect ratio b / L ≦ 1, which is the ratio of the chord length L of the blade at the average radial position to the representative actual length b in the radial direction of the blade, is set in a range, and the number of blades having an aspect ratio in the range is two. Since the wings are not affected by the tip vortex of one of the wings, the incoming air received by each wing is less turbulent and smooth, and there is no problem such as separation and stall at the wings. A stable phenomenon is unlikely to occur, so that noise at the blades can be reduced and static pressure can be improved. Also,
The volume occupied by the impeller is small, and the manufacturing cost can be reduced.
【００４５】また、請求項２記載の発明は、請求項１記
載において翼を、翼の半径方向断面で、翼の代表自乗平
均半径位置付近より外周側は風上側に対して凹形状の曲
線形状にし、翼の代表自乗平均半径位置付近よりハブ側
は風上側に対して凸形状の曲線形状にしてなるもので、
翼の回転騒音であるｎＺ音とその高調波が、羽根枚数が
２枚の翼であっても、乱流騒音の音圧レベルより低くな
るので羽根車全体として異常音をなくし、実聴感も良好
にできる。According to a second aspect of the present invention, in the first aspect of the present invention, the wing is formed in a radial cross-section, and has a curved shape that is concave with respect to the windward side on the outer circumferential side from near the representative root mean square position of the wing. The hub side from the vicinity of the representative root mean square position of the wing has a curved shape convex to the windward side,
Even if the number of blades is two, the nZ sound and its harmonics, which are the rotational noise of the wings, are lower than the sound pressure level of the turbulent noise. Can be.
【００４６】また、請求項３に記載の発明は、請求項１
記載において翼の前縁と外周の交点に３角形状の翼の１
点を重ね、かつ前記前縁に３角形状の翼の１辺を密着し
て３角形状の翼を設けてなるもので、前方の翼で生じた
翼端渦の、後方の翼への影響を最小限にでき、従って翼
同士のピッチが充分に広い２枚翼でも次に回転してくる
後方の翼の流入空気の状態を、更により乱れの少ない円
滑な最適状態にすることができる。また、後方の翼が翼
端渦の影響を更に受けにくくなるので、各翼が迎える流
入空気は最も円滑になり、翼での剥離と失速等の不安定
現象が、更に生じにくくなり、更なる翼での低騒音化と
静圧の向上を図ることができる。Further, the invention described in claim 3 is the first invention.
In the description, a triangular wing 1
A triangular wing is provided with points overlapped and one side of a triangular wing is closely attached to the leading edge. The effect of the tip vortex generated by the front wing on the rear wing Therefore, even with two blades having a sufficiently wide pitch between the blades, the condition of the air flowing into the next rotating rear blade can be set to a smooth optimal state with less disturbance. In addition, since the rear wings are less susceptible to wing tip vortices, the inflow air received by each wing is smoothest, and unstable phenomena such as separation and stall at the wings are more unlikely to occur. Noise at the blades can be reduced and static pressure can be improved.
【００４７】また、請求項４記載の発明は、請求項１〜
請求項３記載のいずれか１項に記載の送風機羽根車を有
する送風機を、熱交換器を有する室外機に設けた空気調
和機で、室外機から発する騒音を従来より低下できると
ともに、性能も向上でき、かつ安価にできるFurther, the invention described in claim 4 is the first invention.
An air conditioner provided with the blower having the blower impeller according to any one of claims 3 to an outdoor unit having a heat exchanger, which can reduce noise generated from the outdoor unit and improve performance as compared with the related art. Can be done at low cost
【図１】本発明送風機羽根車を斜流送風機に採用した実
施例１における羽根車の回転軌跡図FIG. 1 is a rotation locus diagram of an impeller according to a first embodiment in which a blower impeller of the present invention is employed in a mixed flow blower.
【図２】同送風機羽根車の平面図FIG. 2 is a plan view of the blower impeller.
【図３】同送風機羽根車を代表自乗平均半径位置で切り
展開し、翼として厚翼を適用した展開図FIG. 3 is a development view in which the blower impeller is cut and expanded at a representative root mean square position, and a thick blade is applied as a blade.
【図４】同送風機羽根車を代表自乗平均半径位置で切り
展開し、翼として厚さ一定の薄翼を適用した展開図FIG. 4 is an exploded view in which the blower impeller is cut and expanded at a representative root mean square position and thin blades having a constant thickness are applied as blades.
【図５】同送風機羽根車の動作状況を示す模式図FIG. 5 is a schematic view showing an operation state of the blower impeller.
【図６】同送風機羽根車のアスペクト比ｂ／Ｌと４１ｄ
Ｂでの風量の関係を示す特性図FIG. 6 shows the aspect ratio b / L and 41d of the fan impeller.
Characteristic diagram showing the relationship of air volume at B
【図７】同送風機羽根車の２枚翼と従来の送風機羽根車
の３枚翼の静圧特性の実験値を比較した特性図FIG. 7 is a characteristic diagram comparing experimental values of static pressure characteristics of two blades of the fan impeller and three blades of the conventional fan impeller.
【図８】本発明送風機羽根車を軸流送風機に採用した実
施例１における羽根車の回転軌跡図FIG. 8 is a rotation locus diagram of the impeller according to the first embodiment in which the blower impeller of the present invention is employed for an axial blower.
【図９】同軸流送風機における羽根車の平面図FIG. 9 is a plan view of an impeller in the coaxial blower.
【図１０】本発明送風機羽根車を斜流送風機に採用した
実施例２における羽根車の回転軌跡図FIG. 10 is a rotation locus diagram of an impeller according to a second embodiment in which the blower impeller of the present invention is employed in a mixed flow blower.
【図１１】同実施例における送風機羽根車の騒音スペク
トラムの実験結果の図FIG. 11 is a view showing an experimental result of a noise spectrum of a fan impeller in the embodiment.
【図１２】本発明送風機羽根車を斜流送風機に採用した
実施例３における羽根車の翼端渦の挙動を示した平面図FIG. 12 is a plan view showing the behavior of the tip vortex of the impeller in Embodiment 3 in which the blower impeller of the present invention is employed in a mixed flow blower.
【図１３】従来の送風機羽根車の平面図FIG. 13 is a plan view of a conventional blower impeller.
【図１４】従来の送風機羽根車の回転軌跡図FIG. 14 is a rotation locus diagram of a conventional fan impeller.
２、１４ 翼 ３、１３ ハブ ４ 前縁 １７ 三角形状の翼 Ｌ 翼の代表自乗平均半径位置での翼の弦長 ｂ 翼の半径方向の代表実長さ ｂ／Ｌ アスペクト比 2,14 wing 3,13 hub 4 leading edge 17 triangular wing L representative wing chord length of wing b representative wing radial actual length b / L aspect ratio
Claims (4)
備え、前記翼は、翼の代表自乗平均半径位置での翼の弦
長Ｌと翼の半径方向の代表実長さｂの比であるアスペク
ト比ｂ／Ｌ≦１の範囲に設定し、かつ前記範囲のアスペ
クト比の翼枚数を２枚に構成してなる送風機羽根車。1. A wing comprising a hub and two wings provided on the hub, wherein the wing has a chord length L at a representative root mean square radius position of the wing and a representative actual length b in a radial direction of the wing. The blower impeller is configured to have an aspect ratio b / L ≦ 1, which is the ratio of the number of blades, and to configure the number of blades of the aspect ratio in the range to two.
代表自乗平均半径位置付近より外周側は風上側に対して
凹形状の曲線にし、翼の代表自乗平均半径位置付近より
ハブ側は風上側に対して凸形状の曲線形状にしてなる請
求項１記載の送風機羽根車。2. The wing has a curved section on the outer circumference side near the representative root mean square position of the wing in the radial cross section of the wing, and has a concave shape with respect to the windward side. The blower impeller according to claim 1, wherein the fan impeller has a curved shape that is convex with respect to the windward side.
形状の翼の１点を重ね、かつ前記前縁に３角形状の翼の
１辺を密着して３角形状の翼を設けてなる請求項１記載
の送風機羽根車。3. A wing having a triangular shape formed by overlapping a point of a triangular wing at an intersection of a leading edge and an outer periphery of the wing, and closely contacting one side of the triangular wing with the leading edge. The blower impeller according to claim 1, further comprising wings.
に記載の送風機羽根車を有する送風機を、熱交換器を有
する室外機に設けた空気調和機。4. An air conditioner, wherein a blower having the blower impeller according to any one of claims 1 to 3 is provided in an outdoor unit having a heat exchanger.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27083099A JP3743222B2 (en) | 1999-09-24 | 1999-09-24 | Blower impeller and air conditioner |
| MYPI20004291 MY131508A (en) | 1999-09-24 | 2000-09-15 | Impeller for fan, fan using the same, and air conditioner using the same |
| EP20000119461 EP1087146B1 (en) | 1999-09-24 | 2000-09-15 | Impeller for fan, fan using the same, and air conditioner using the same |
| ES00119461T ES2312316T3 (en) | 1999-09-24 | 2000-09-15 | FAN DRIVER, FAN THAT USES IT, AND AIR CONDITIONER THAT USES THEM. |
| CNB001288504A CN1297751C (en) | 1999-09-24 | 2000-09-22 | Impeller for fun, fun therewith and air conditioner with the fun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27083099A JP3743222B2 (en) | 1999-09-24 | 1999-09-24 | Blower impeller and air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001090693A true JP2001090693A (en) | 2001-04-03 |
| JP3743222B2 JP3743222B2 (en) | 2006-02-08 |
Family
ID=17491616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27083099A Expired - Lifetime JP3743222B2 (en) | 1999-09-24 | 1999-09-24 | Blower impeller and air conditioner |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1087146B1 (en) |
| JP (1) | JP3743222B2 (en) |
| CN (1) | CN1297751C (en) |
| ES (1) | ES2312316T3 (en) |
| MY (1) | MY131508A (en) |
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| KR100487339B1 (en) * | 2002-11-18 | 2005-05-03 | 엘지전자 주식회사 | axial flow fan |
| JP2006037929A (en) * | 2004-07-30 | 2006-02-09 | Matsushita Electric Ind Co Ltd | Impeller of blower for air-conditioning |
| JP2006077632A (en) * | 2004-09-08 | 2006-03-23 | Matsushita Electric Ind Co Ltd | Blower impeller for air conditioning |
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| JP2006118722A (en) * | 2004-10-19 | 2006-05-11 | Hitachi Ltd | Outdoor unit for air conditioner |
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| JP2008025463A (en) * | 2006-07-21 | 2008-02-07 | Matsushita Electric Ind Co Ltd | Blower impeller |
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| US1807397A (en) * | 1927-05-20 | 1931-05-26 | Westinghouse Electric & Mfg Co | Propeller type pump or fan |
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1999
- 1999-09-24 JP JP27083099A patent/JP3743222B2/en not_active Expired - Lifetime
-
2000
- 2000-09-15 EP EP20000119461 patent/EP1087146B1/en not_active Expired - Lifetime
- 2000-09-15 ES ES00119461T patent/ES2312316T3/en not_active Expired - Lifetime
- 2000-09-15 MY MYPI20004291 patent/MY131508A/en unknown
- 2000-09-22 CN CNB001288504A patent/CN1297751C/en not_active Expired - Fee Related
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Also Published As
| Publication number | Publication date |
|---|---|
| CN1289897A (en) | 2001-04-04 |
| EP1087146A2 (en) | 2001-03-28 |
| CN1297751C (en) | 2007-01-31 |
| EP1087146A3 (en) | 2002-04-03 |
| MY131508A (en) | 2007-08-30 |
| JP3743222B2 (en) | 2006-02-08 |
| EP1087146B1 (en) | 2008-08-27 |
| ES2312316T3 (en) | 2009-03-01 |
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