JP3204208B2 - Diagonal flow fan impeller - Google Patents

Diagonal flow fan impeller

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Publication number
JP3204208B2
JP3204208B2 JP10234498A JP10234498A JP3204208B2 JP 3204208 B2 JP3204208 B2 JP 3204208B2 JP 10234498 A JP10234498 A JP 10234498A JP 10234498 A JP10234498 A JP 10234498A JP 3204208 B2 JP3204208 B2 JP 3204208B2
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Prior art keywords
blade
side
midpoint
hub
shape
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JPH11294389A (en
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孝 杉尾
善樹 泉
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松下電器産業株式会社
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/26Rotors specially for elastic fluids
    • F04D29/32Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38Blades
    • F04D29/384Blades characterised by form

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【発明の属する技術分野】本発明は、空気調和機等の送風機に用いられる斜流羽根を備えた斜流送風機羽根車に関すもので、特に、同羽根車の羽根の形状に関する。 The present invention relates is intended relates to a mixed flow fan impeller having a mixed flow blades used in air conditioners and the like of the blower, in particular, to the shape of the blades of the impeller.

【0002】 [0002]

【従来の技術】従来の薄翼の羽根を有する斜流送風機羽根車は図8、図9に示すような構成になっていた。 BACKGROUND OF THE INVENTION mixed flow blower impeller having blades of a conventional thin wings 8, was constructed as shown in FIG. すなわち、略円錐台状のハブ23に複数枚の薄翼の羽根22 That is, the blade of the plurality of thin blades in a substantially frustoconical hub 23 22
を放射状に設けて斜流送風機羽根車21を構成していた。 The provided radially constituted the mixed flow fan impeller 21.

【0003】そして羽根22は、その半径方向の断面が、羽根22のハブ23側から外周端側にかけて、ほぼ直線状、または単一方向にのみ曲線状に形成されたものであり、送風機としては、この斜流送風機羽根車21を適当なケーシングに納めて回転させることにより、送風作用を生じるようにしていた。 [0005] blade 22, the radial cross-section, to the outer end side of the hub 23 side of the blade 22, which is formed substantially linearly, or a single direction only curvilinear, as blower by rotating pay the mixed flow blower impeller 21 in a suitable casing, it had to produce a blowing action.

【0004】 [0004]

【発明が解決しようとする課題】しかしながら、上記従来の構成では、羽根22の半径方向の断面形状が、ほぼ直線状、または単一方向にのみ曲線化された形状のものであったため、送風時に羽根22の外周付近で発生する翼端渦の制御に限界があった。 [SUMMARY OF THE INVENTION However, in the conventional configuration, for the radial cross-sectional shape of the blade 22 was nearly that of linear or curvilinear shape in a single direction only, at the time of air blowing there is a limit to the control of the wing tip vortex generated near the outer periphery of the blade 22.

【0005】また、斜流送風機羽根車21を高負荷域で使用するときに発生する半径方向の流入流れの改善に対して、羽根として何らの工夫もされていなかった。 Further, with respect to improvement of the radial inflow stream that occurs when using an oblique flow fan impeller 21 in the high load region, it has not been also no contrivance as vanes.

【0006】すなわち、斜流送風機羽根車21に対して、翼端渦の制御による低騒音化と高負荷域での半径方向の流入流れの円滑化による静圧の向上が要求されていた。 [0006] That is, for a mixed flow blower impeller 21, the improvement of the static pressure due to facilitation of the radial inflow stream with low noise and high load region under the control of the blade tip vortex has been required.

【0007】本発明は、このような従来の課題を解決するものであり、羽根の低騒音化と静圧の向上とを両立させ斜流送風機羽根車を提供することを目的としている。 [0007] The present invention is intended to solve such conventional problems, and its object is to provide a mixed flow fan impeller is both the improvement of low noise and static pressure of the blade.

【0008】 [0008]

【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は、羽根の前縁を、羽根の回転軌跡の形状で、 SUMMARY OF THE INVENTION The present invention in order to achieve the above object, a front edge of the blade, in the form of rotational path of the blades,
ハブと羽根の外周端との中点付近より外周側では風上側に対して凹形状の曲線に、中点付近よりハブ側では風上側に対して凸形状の曲線に形成し、かつ羽根の半径方向の断面形状を、羽根の中点付近より外周側は風上側に対して凹形状の曲線に、中点付近よりハブ側では風上側に対して凸形状の曲線に形成したものであ。 A concave curve relative to the windward side on the outer peripheral side than the vicinity of the midpoint between the outer peripheral end of the hub and blades to form a convex curve shape with respect to the windward side in the hub side from the vicinity midpoint, and blade radius the direction of the cross-sectional shape, der ones outer peripheral side from the vicinity of the midpoint of the blade to the concave shape of the curve with respect to the windward side, the hub side from the vicinity midpoint which is formed in a curved convex shape with respect to the windward side.

【0009】上記構成によって、圧力面から負圧面に向かう洩れ流れにより、羽根の外周付近の負圧面に発生する翼端渦の生成を羽根自体の凹状の曲線部で促進させ、 [0009] With the above arrangement, the leakage flow toward the suction side from the pressure surface, the generation of the blade end vortex generated on the negative pressure surface near the outer periphery of the blades is promoted by the concave curved portion of the blade itself,
低騒音化を図ることができる。 It is possible to reduce noise. また、ハブ側の羽根の凸状の曲線部で、高負荷域での半径方向の流入流れを円滑化させ静圧の向上を同時に図ることができる。 Further, it is possible to convex curved portion of the blade on the hub side, the improvement of the static pressure at the same time to smooth the incoming flows in the radial direction in the high load region.

【0010】 [0010]

【発明の実施の形態】請求項1に記載の発明は、略円錐台状のハブに複数枚の薄翼の羽根を設けた斜流送風機羽根車において、羽根の前縁を、羽根の回転軌跡の形状でハブと羽根の外周端との中点付近より外周側では風上側に対して凹形状の曲線に、中点付近よりハブ側では風上側に対して凸形状の曲線に形成し、かつ羽根の半径方向の断面形状を、羽根の中点付近より外周側では風上側に対して凹形状の曲線に、中点付近よりハブ側では風上側に対して凸形状の曲線に形成したものであり、これによって、圧力面から負圧面に向かう洩れ流れにより、羽根の外周付近の負圧面に発生する翼端渦の生成を、羽根自体の凹状の曲線部で促進させ、低騒音化を図るとともに、ハブ側の羽根の凸状の曲線部で、高負荷域での半径方向の流入流れを円 The invention described in DETAILED DESCRIPTION OF THE INVENTION Claim 1, in oblique flow fan impeller having a blade of a plurality of thin blades in a substantially truncated cone-shaped hub, the leading edge of the blade, the rotation locus of the blades a concave curve relative to the windward side on the outer peripheral side than the vicinity of the midpoint between the outer peripheral end of the hub and the blade shape, the hub side from the vicinity midpoint is formed in a curved convex shape with respect to the windward side, and the radial cross-sectional shape of the blade, the outer peripheral side from the vicinity of the midpoint of the blade to the concave shape of the curve with respect to the windward side, the hub side from the vicinity midpoint made by forming a convex curve shape with respect to the windward side There, by this, the leakage flow toward the suction side from the pressure surface, the generation of the blade end vortex generated on the negative pressure surface near the outer periphery of the blades, is promoted by the concave curved portion of the blade itself, while achieving noise reduction , convex curved portion of the blade on the hub side, a circle of incoming flows in the radial direction in the high load region 化させ、静圧の向上を図ることができる。 It is of, it is possible to improve the static pressure.

【0011】また、請求項2に記載の発明は、上記羽根を厚翼の羽根とし、厚翼の羽根の前縁の中点と後縁の中点とを結ぶ流路中心線の断面形状を、最大厚みtと弦長cとの比t/cが5〜12%の範囲となる翼型の形状にしたものであり、これによって、厚さが一定の薄翼に比較し、厚翼の翼型形状をした羽根により、流れの剥離が防がれ、さらに低騒音化を果たすことができる。 [0011] Further, an invention according to claim 2, the blade and the blade of Atsutsubasa, the cross-sectional shape of the channel center line connecting the middle point of the trailing edge and a midpoint of the front edge of the blade of Atsutsubasa , which ratio t / c of the maximum thickness t and chord length c is the shape of the airfoil in the range from 5 to 12% Thus, the thickness is compared to a certain thin blades, the Atsutsubasa the wings were the airfoil shape, flow separation is prevented, it is possible to further perform the noise reduction.

【0012】 [0012]

【実施例】以下、本発明の一実施例の斜流送風機羽根車について図面を参照して説明する。 EXAMPLES The following will be described with reference to the drawings diagonal flow fan impeller of an embodiment of the present invention.

【0013】(実施例1)本発明の第1の実施例を図1 [0013] The first embodiment (Embodiment 1) The present invention FIG 1
〜図5を用いて説明する。 It will be described with reference to to 5.

【0014】図1は斜流送風機羽根車の平面図、図2は同羽根車の羽根の回転軌跡を示す部分図、図3は図1のAA線の断面図、図4は同羽根車の動作状態を示す模式図、図5は同羽根車の性能特性を従来のものと比較した曲線図である。 [0014] Figure 1 is a plan view of the mixed flow fan impeller, FIG. 2 is a partial view showing a rotation trajectory of the blades of the impeller, Figure 3 is a cross-sectional view of AA line in FIG. 1, FIG. 4 is the same impeller illustrates an operation state, FIG. 5 is a curve diagram comparing with those of the performance characteristics of the impeller of the conventional.

【0015】図に示すように、斜流送風機羽根車1は、 [0015] As shown, a mixed flow fan impeller 1,
略円錐台状のハブ3の外周に薄翼の羽根2を放射状に3 3 blade 2 thin blades radially outer periphery of the substantially frustoconical hub 3
枚設けて構成している。 It has been constructed by providing sheets. そして図4のように、斜流送風機羽根車1のハブ3にモータ4のシャフトを固定し、適切なケーシング5に納め、モータ4により回転させることにょって送風作用を生じるようにしている。 And as shown in FIG. 4, the shaft of the motor 4 is fixed to the hub 3 of the mixed flow fan impeller 1, housed in a suitable casing 5, so that produce blowing action I Nyo be rotated by the motor 4. このとき、空気の殆どは図1で示す羽根2の前縁6より流入し、後縁7より流出して空力仕事を行う。 At this time, most of the air flows in from the front edge 6 of the blade 2 shown in FIG. 1, and aerodynamic work flows from the trailing edge 7.

【0016】ここで、図2に示すように、羽根2は、その回転軌跡の形状で、羽根2の前縁6が、ハブ3と羽根2のチップ(外周端)8との中点X付近よりチップ8側は風上側(気流)に対して凹形状に、中点X付近よりハブ3側は風上側に対して凸形状の曲線になるように形成している。 [0016] Here, as shown in FIG. 2, the blade 2 is in the shape of the rotation locus, the front edge 6 of the blade 2 is, near the center point X between the tip (outer peripheral end) 8 hub 3 and the blade 2 more chip 8 side in a concave shape with respect to the windward side (air flow), the hub 3 side from the vicinity of the center point X is formed so as to curve in a convex shape with respect to the windward side. なお、線BBは前縁6と後縁7上のハブ3とチップ8との中点(中間点)を結ぶ中点線(後述の流路中心線)、線CCは羽根車の回転中心線を示す。 Note that (channel center line below) the dotted line in connecting line BB is the midpoint of the hub 3 and the tip 8 of the trailing edge 7 and the leading edge 6 (midpoint), the rotation center line of the line CC is the impeller show.

【0017】また、羽根2は、図3に示すように、羽根2の半径方向の断面形状を、羽根2の中点線BB付近よりチップ8側は風上側に対して凹形状に、中点付近よりハブ3側は風上側に対して凸形状の曲線になるように形成している。 Further, the blade 2, as shown in FIG. 3, the radial cross-sectional shape of the blade 2, the tip 8 side from the vicinity of the dotted line BB in the blade 2 in a concave shape with respect to the windward side, around the midpoint more hub 3 side is formed to be curved convex relative to the windward side.

【0018】そして、上記構成によって、圧力面10から負圧面9に向かう気流の洩れ流れにより、羽根2のチップ8付近の負圧面9側に発生する翼端渦の生成を、羽根2自体の凹状の曲線部分で促進させて低騒音化を図るとともに、ハブ3側の羽根2の凸状の曲線部により、高負荷域で増加する半径方向の流入流れ、すなわちチップ8側からの流入を円滑化させ、静圧の向上を図っている。 [0018] Then, the above configuration, the leakage flow of the air flow toward the negative pressure surface 9 from the pressure surface 10, the generation of the blade end vortex generated on the negative pressure surface 9 side around the chip 8 of the blade 2, a concave blade 2 itself together by promoting a curve portion reduce the noise of the convex curved portion of the blade 2 of the hub 3 side, smooth radial inflow flow increases, i.e., the flow from the tip 8 side in the high load region then, it is to improve the static pressure.

【0019】以上のように、低騒音化と高負荷域での静圧の向上の両方を図ることができる。 [0019] As described above, it is possible to both increase the static pressure at low noise and high load region.

【0020】次に上記構成の具体的な効果を図5を用いて説明する。 [0020] will be described with reference to FIG. 5 Specific effects of the above configuration. 図5は、本発明の薄翼を用いた斜流送風機羽根車と従来の斜流送風機羽根車との静圧特性及び騒音特性(A)を示したもので、羽根外径Φ400mmの実験結果を示す図である。 Figure 5 shows the static pressure characteristics and noise characteristics of the mixed flow fan impeller of the conventional mixed flow fan impeller using thin blade of the present invention (A), the experimental results of vane outer diameter Φ400mm It illustrates.

【0021】すなわち、図5に示すように、風量の開放風量点Q1では、2dB(A)の低騒音効果があり、さらに開放風量の約68%域Q2までは低騒音効果を有している。 [0021] That is, as shown in FIG. 5, the open air volume point Q1 of air flow, there is a low noise effect of 2 dB (A), even up to about 68% area Q2 of the open air volume has a low noise effect . また、開放風量の60%域Q3では、静圧が3 In addition, in the open air volume of 60% range Q3, static pressure 3
2%向上している。 It has improved 2%.

【0022】(実施例2)本発明の第2の実施例を図6、図7を用いて説明する。 [0022] Figure 6 a second embodiment (Embodiment 2) The present invention will be described with reference to FIG.

【0023】図6は羽根を厚翼の羽根とした流路中心線BBでの断面図、図7は厚翼を用いた羽根の最大厚み付近での半径方向の断面図である。 [0023] Figure 6 is a cross-sectional view taken along the channel centerline BB with a feather Atsutsubasa vane, FIG. 7 is a sectional view of a radial direction in the vicinity of the maximum thickness of the blade with Atsutsubasa.

【0024】図6に示す厚翼の羽根12の前縁の中点と後縁の中点とを結ぶ中点線(流路中心線)BBでの断面形状において、羽根12を、断面の最大厚みtとこの前縁の中点と後縁の中点を結ぶ弦長cとの比t/cが、5 [0024] In the cross-sectional shape of a dotted line (channel center line) BB in connecting the midpoints of the front edge of the midpoint and the rear edge of Atsutsubasa blades 12 shown in FIG. 6, the blade 12, the maximum thickness of the cross section t and the ratio t / c of the chord length c that connects the midpoints of the middle and rear edge of the front edge, 5
〜12%の範囲になる翼型の形状にして斜流送風機羽根車11を構成したものである。 In the shape of the airfoil to be in the range of 12% is obtained by constituting the mixed flow fan impeller 11.

【0025】また、図7に示すように、羽根12の半径方向の断面形状を、羽根12の中点線BB付近よりチップ14側では風上側に対して凹形状の、中点線BB付近よりハブ13側では風上側に対して凸形状の曲線に形成している。 Further, as shown in FIG. 7, the radial cross-sectional shape of the blades 12, concave with respect to the windward side in the tip 14 side from the vicinity of the dotted line BB in the blades 12, hub 13 from the vicinity middle dotted line BB in the side is formed in a curved convex shape with respect to the windward side.

【0026】そしてこの構成によって、圧力面16から負圧面15に向かう洩れ流れにより、羽根12のチップ14付近の負圧面15側に発生する翼端渦の生成を、羽根自体の凹状の曲線部分で促進させ低騒音化を図っている。 [0026] Then this configuration, the leakage flow towards the negative pressure surface 15 from the pressure surface 16, the generation of the blade end vortex generated on the negative pressure surface 15 side in the vicinity of tip 14 of the blade 12, in the concave curved portion of the blade itself thereby achieving a low-noise to promote.

【0027】また、ハブ13側の羽根12の凸状の曲線部で、高負荷域で増加する半径方向の流入流れ、すなわちチップ14側からの空気の流入を円滑化させ静圧の向上を図っている。 Further, in the convex curved portion of the blade 12 of the hub 13 side, radial inlet flow to increase in the high load region, i.e., the improvement of the static pressure to facilitate the inflow of air from the chip 14 side aiming ing.

【0028】以上のように、低騒音化と高負荷域での静圧の向上の両立を図っているのは薄翼の場合と同様である。 [0028] As described above, what achieve both improvement of the static pressure with low noise and high load region is similar to that of the thin wing. この場合に羽根12は、厚さ一定の薄翼に比較し、 The blade 12 case, compared to the constant thickness of the thin blade,
最大厚みtと弦長cとの比t/cが、5〜12%になる厚翼の翼型形状とすることにより、羽根12からの流れの剥離が防がれ、さらに低騒音化を達成することができる。 The ratio t / c of the maximum thickness t and chord length c is, by the blade shape of Atsutsubasa comprising 5 to 12% are prevented from flow separation from the blade 12, further achieve low noise can do. ただし、比t/cが5%から低騒音効果が発揮され12%で低騒音効果が飽和する。 However, the ratio t / c is a low noise effect in 12% low noise effect is exhibited is saturated 5%. ちなみに、外径Φ40 By the way, the outer diameter Φ40
0mmの斜流送風機羽根車で比t/cが9%の厚翼を用いた場合、薄翼に比較して2dB(A)の低騒音効果が実験で得られている。 If the ratio t / c was used 9% thick airfoil with 0mm of the mixed flow fan impeller, low noise effect of 2 dB (A) compared to a thin blade is obtained by experiments.

【0029】なお、これらの技術は斜流送風機羽根車に限らず、軸流送風機羽根車でも同様の効果を得ることができる。 It should be noted, these techniques are not limited to diagonal flow fan impeller, it is possible to obtain the same effect in the axial flow fan impeller.

【0030】 [0030]

【発明の効果】上記実施例の説明から明らかなように、 [Effect of the Invention] As apparent from the description of the above embodiment,
請求項1に記載の発明は、薄翼の羽根の前縁を、羽根の回転軌跡の形状でハブと羽根の外周端との中点付近より外周側では風上側に対して凹形の、中点付近よりハブ側では風上側に対して凸形の曲線形状に形成し、かつ羽根の半径方向の断面形状を、羽根の中点付近より外周側では風上側に対して凹形の、中点付近よりハブ側では風上側に対して凸形の曲線形状に形成したものであり、この構成によって、圧力面から負圧面に向かう洩れ流れにより、羽根の外周付近の負圧面に発生する翼端渦の生成を、羽根自体の凹状の曲線部で促進させ、低騒音化を図るとともに、ハブ側の羽根の凸状の曲線部で、高負荷域での半径方向流入を円滑化させ静圧の向上を同時に図れるという効果がある。 The invention according to claim 1, the leading edge of the blade of the thin wing, the outer peripheral side from the vicinity of the midpoint between the outer peripheral end of the hub and blades in the form of rotational path of the blades of the concave relative to the windward side, medium in the hub side from the vicinity of the point formed on the convex curved shape with respect to the windward side, and the radial cross-sectional shape of the blade, the concave relative to the windward side on the outer peripheral side than the vicinity of the midpoint of the blade, the midpoint in the hub-side from the vicinity is obtained by forming a convex curved shape with respect to the windward side, by this structure, leakage flows toward the suction side from the pressure surface, the tip vortex generated on the negative pressure surface near the outer periphery of the blade the production of, to promote concave curved portion of the blade itself, while achieving noise reduction, convex curved portion of the blade on the hub side, the improvement of the static pressure to facilitate radial inflow in the high load region there is an advantage of being able at the same time.

【0031】また請求項2に記載の発明は、上記羽根を厚翼の羽根とし、厚翼の羽根の前縁の中点と後縁の中点とを結ぶ流路中心線の断面形状を、最大厚みtと弦長c [0031] According to a second aspect of the invention, the blades and vanes of Atsutsubasa, the cross-sectional shape of the channel center line connecting the middle point of the trailing edge and a midpoint of the front edge of the blade of Atsutsubasa, the maximum thickness t and the chord length c
との比t/cが5〜12%の範囲となる厚翼形状にしたものであり、これによって、厚さが一定の薄翼に比較し、厚翼の翼型形状をした羽根により、流れの剥離が防がれ、さらに低騒音化を果たすことができる。 The ratio t / c is obtained by the Atsutsubasa shape in the range from 5 to 12% by this, the thickness is compared to a certain thin blade, the blade in which the aerofoil shape of Atsutsubasa, flow and the peeling is prevented, it is possible to further perform the noise reduction.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の第1の実施例の斜流送風機羽根車の平面図 Plan view of the mixed flow fan impeller of the first embodiment of the present invention; FIG

【図2】同羽根車の羽根の回転軌跡を示す部分図 Figure 2 is a partial view showing a rotation trajectory of the blades of the impeller

【図3】図1のAA線での断面図 FIG. 3 is a cross-sectional view taken along the AA line in FIG. 1

【図4】同羽根車の動作状態を示した模式図 Figure 4 is a schematic view showing an operating state of the impeller

【図5】同羽根車と従来の斜流送風機羽根車との性能特性を比較した曲線図 [5] curves comparing the performance characteristics of the same impeller and conventional mixed flow fan impeller

【図6】本発明の第2の実施例の斜流送風機羽根車の流路中心線での断面図 Sectional view taken along the channel center line of the mixed flow fan impeller of the second embodiment of the invention; FIG

【図7】同羽根車の羽根の最大厚み付近での半径方向の断面図 7 is a cross-sectional view of the radial direction in the vicinity of the maximum thickness of the blade of the impeller

【図8】従来の斜流送風機羽根車の平面図 Figure 8 is a plan view of a conventional mixed flow fan impeller

【図9】図8のDD線での断面図 FIG. 9 is a cross-sectional view of the DD line in FIG. 8

【符号の説明】 DESCRIPTION OF SYMBOLS

1、11 斜流送風機羽根車 2、12 羽根 3、13 ハブ 6 前縁 7 後縁 8、14 チップ(外周端) 1,11 mixed flow fan impeller 2,12 wings 3,13 hub 6 front edge 7 trailing edge 8, 14 chips (outer circumferential end)

Claims (2)

    (57)【特許請求の範囲】 (57) [the claims]
  1. 【請求項1】略円錐台状のハブに複数枚の薄翼の羽根を設けてなる斜流送風機羽根車において、前記羽根の前縁を、前記羽根の回転軌跡の形状で前記ハブと前記羽根の外周端との中点付近より外周側では風上側に対して凹形状の曲線に、前記中点付近よりハブ側では風上側に対して凸形状の曲線になるように形成し、かつ前記羽根の半径方向の断面形状を、前記中点付近より外周側では風上側に対して凹形状の曲線で、前記中点付近よりハブ側では風上側に対して凸形状の曲線になるように形成した斜流送風機羽根車。 1. A formed by providing a vane of a plurality of thin blades in a substantially frustoconical hub diagonal flow fan impeller, the front edge of the blade, the hub and the vane in the shape of a rotation trajectory of the blade a concave curve with respect to the windward side on the outer peripheral side than the vicinity of the midpoint between the outer peripheral edge, formed so as to curve in a convex shape with respect to the windward side in the hub side from the vicinity the midpoint, and the blades of the the radial cross-sectional shape of said at midpoint around the outer peripheral side concave curve with respect to the windward side, at the hub side from the vicinity the midpoint was formed to have a curved convex relative to the windward side diagonal flow fan impeller.
  2. 【請求項2】羽根を厚翼の羽根とし、前記厚翼の羽根の前縁の中点と後縁の中点とを結ぶ流路中心線の断面形状を、最大厚みtと弦長cとの比t/cが5〜12%の範囲となる翼型の形状にした請求項1記載の斜流送風機羽根車。 Wherein the blades of Atsutsubasa vanes, the cross-sectional shape of the channel center line connecting the middle point of the midpoint and the rear edge of the front edge of the blade of the Atsutsubasa, the maximum thickness t and chord length c mixed flow blower impeller of claim 1, wherein the ratio t / c is in the shape of the airfoil as a range from 5 to 12 percent.
JP10234498A 1998-04-14 1998-04-14 Diagonal flow fan impeller Expired - Lifetime JP3204208B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10234498A JP3204208B2 (en) 1998-04-14 1998-04-14 Diagonal flow fan impeller

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JP10234498A JP3204208B2 (en) 1998-04-14 1998-04-14 Diagonal flow fan impeller
MYPI9901194 MY123252A (en) 1998-04-14 1999-03-27 Impeller of fan
EP19990106357 EP0955469B1 (en) 1998-04-14 1999-03-29 Impeller of fan
ES99106357T ES2230759T3 (en) 1998-04-14 1999-03-29 Fan drive.
CN 99105133 CN1107808C (en) 1998-04-14 1999-04-13 Impeller of fan

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JPH11294389A JPH11294389A (en) 1999-10-26
JP3204208B2 true JP3204208B2 (en) 2001-09-04

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JP (1) JP3204208B2 (en)
CN (1) CN1107808C (en)
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JP2009024652A (en) * 2007-07-23 2009-02-05 Panasonic Corp Mixed flow blower impeller and air conditioner

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ES2230759T3 (en) 2005-05-01
JPH11294389A (en) 1999-10-26
CN1107808C (en) 2003-05-07
EP0955469B1 (en) 2004-10-20
MY123252A (en) 2006-05-31
CN1232143A (en) 1999-10-20
EP0955469A2 (en) 1999-11-10
EP0955469A3 (en) 2001-02-28

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