JP2008025463A - Blower impeller - Google Patents

Blower impeller Download PDF

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Publication number
JP2008025463A
JP2008025463A JP2006198965A JP2006198965A JP2008025463A JP 2008025463 A JP2008025463 A JP 2008025463A JP 2006198965 A JP2006198965 A JP 2006198965A JP 2006198965 A JP2006198965 A JP 2006198965A JP 2008025463 A JP2008025463 A JP 2008025463A
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Prior art keywords
blade
groove
blower impeller
shape
blower
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JP2006198965A
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JP4910534B2 (en
Inventor
Koichi Sakai
浩一 酒井
Yoshikimi Tazumi
欣公 田積
Tomohito Kitagawa
智史 北川
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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    • 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
    • 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
    • F04D29/66Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/68Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/681Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00Components
    • F05D2240/20Rotors
    • F05D2240/30Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05D2240/303Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the leading edge of a rotor blade
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00Components
    • F05D2240/20Rotors
    • F05D2240/30Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05D2240/306Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the suction side of a rotor blade
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00Geometry
    • F05D2250/20Three-dimensional
    • F05D2250/29Three-dimensional machined; miscellaneous
    • F05D2250/294Three-dimensional machined; miscellaneous grooved

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a blower impeller of reduced weight while securing air quantity performance and low noise property. <P>SOLUTION: This impeller comprises a hub part 3, and a plurality of aerofoil shape blade 4 radially extending around the hub part 3. A plurality of groove part 7 is provided along flow of air on a surface of the blade 4 with securing a leading edge shape of the blade 4. A surface shape of a tip of a convex part 8 formed between the groove part 7 is formed in an aerofoil surface shape. Stripping of a leading edge part 5 can be inhibited by securing the leading edge shape of thick aerofoil shape of the blade 4. Air quantity and low noise can be secured since a surface of the convex part 8 between the groove parts 7 forms an aerofoil shape surface. Production of thin wall forming method, and stable production are enabled by providing a plurality of groove parts 7 along air flow on the blade 4 surface. Since the groove part 7 is formed in thin wall over almost whole region of the blade 4, weight of single blade 4 can be reduced. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、低騒音で風量性能に優れた厚肉の送風機羽根車に関するものである。   The present invention relates to a thick blower impeller with low noise and excellent air flow performance.

従来のこの種の送風機羽根車について、図16から図19を用いて説明する。   A conventional blower impeller of this type will be described with reference to FIGS.

図16は、従来の送風機羽根車の斜視図、図17は、同送風機羽根車のブレードの平面図、図18は、図17のA−A断面図、図19は、図17のB−B断面図である。   16 is a perspective view of a conventional blower impeller, FIG. 17 is a plan view of a blade of the blower impeller, FIG. 18 is a cross-sectional view taken along the line AA in FIG. 17, and FIG. It is sectional drawing.

図16から図18において、送風機羽根車2(以下、「羽根車2」という)は、略円柱上のハブ部3にブレード4が備えられている。そして、ブレード4の負圧面側に、所定のエグリ1が薄肉で設けてある。羽根車2のハブ部3にモーターシャフト(図示せず)を固定し、適切なケーシング(図示せず)に納め、モーター(図示せず)により矢印の方向に回転させることで送風作用を生じる。この時、空気は、ブレード4の前縁部5より侵入し後縁6より流出する。そこで、前記負圧面側のエグリ1には、図17、図18に示すように3方にテーパ部15、16を設けてあるので、エグリ1形状がスムースになり、ブレード4の負圧面側に特徴的な剥離を助長させず、その結果、騒音が増加することは非常に少ない。そのため、厚肉の翼型の低騒音効果をそのまま維持できる(例えば、特許文献1参照)。
特開平7−189985号公報
In FIG. 16 to FIG. 18, the blower impeller 2 (hereinafter referred to as “impeller 2”) is provided with a blade 4 on a hub portion 3 on a substantially cylindrical shape. A predetermined edge 1 is thinly provided on the suction surface side of the blade 4. A motor shaft (not shown) is fixed to the hub portion 3 of the impeller 2, placed in an appropriate casing (not shown), and rotated in the direction of the arrow by a motor (not shown) to produce a blowing action. At this time, air enters from the front edge portion 5 of the blade 4 and flows out from the rear edge 6. Accordingly, the suction face 1 on the suction surface side is provided with tapered portions 15 and 16 in three directions as shown in FIGS. It does not promote characteristic delamination, and as a result, there is very little increase in noise. Therefore, the low noise effect of the thick wing shape can be maintained as it is (see, for example, Patent Document 1).
JP-A-7-189985

上記従来の送風機羽根車のエグリの効果は、軽量化には役立つことができる。しかし、厚肉の翼型の送風機羽根車の低騒音効果及び風量性能向上の効果を減退することになる。すなわち、負圧面側にエグリを入れる場合、多少の剥離の助長を招き、それにより乱流が発生して風量性能の劣化に繋がる。また、乱流騒音により、若干の騒音増加となる。さらに、この技術のみではブレードのチップ部(外周部)の肉厚が大きいため、生産性(樹脂成形)が劣化するという課題があった。   The effect of the conventional fan blade wheel can be useful for weight reduction. However, the low noise effect and the improvement of the air flow performance of the thick airfoil blower impeller are reduced. In other words, when the eggplant is put on the suction surface side, some peeling is promoted, and turbulence is generated thereby leading to deterioration of the air flow performance. Moreover, the noise increases slightly due to turbulent noise. Furthermore, since the thickness of the tip portion (outer peripheral portion) of the blade is large only with this technique, there is a problem that productivity (resin molding) deteriorates.

本発明は、上記従来の課題を解決するもので、風量性能及び低騒音化を確保し、安定した生産が可能で、軽量化を図った送風機羽根車を提供することを目的とする。   The present invention solves the above-described conventional problems, and an object thereof is to provide a blower impeller that secures air volume performance and noise reduction, enables stable production, and is reduced in weight.

前記従来の課題を解決するために、本発明の送風機羽根車は、ハブ部と、前記ハブ部の周囲に放射状に延設した翼型の複数枚のブレードからなり、前記ブレードの前縁形状を確保して、前記ブレードの表面における風の流れに沿うように複数の溝部を設け、前記溝部間に形成される凸部の先端の表面形状を、翼型の表面形状としたもので、ブレードの厚肉翼形の前縁形状を確保することにより前縁の剥離を抑制することができ、また各溝部の間の凸部表面が翼型面を形成するため風量性能及び低騒音化を確保することができる。また、ブレード表面における風の流れに沿うように、複数の溝部を設けることにより、薄肉の成形方法で生産可能となり安定した生産が可能となり、さらに、ブレードのほぼ全域に亘って溝部、すなわち薄肉で成形されているため、ブレード単体の軽量化を図ることもできる。   In order to solve the above-described conventional problems, a blower impeller according to the present invention includes a hub portion and a plurality of blade-shaped blades radially extending around the hub portion. Securing a plurality of grooves along the flow of wind on the surface of the blade, and the surface shape of the tip of the convex portion formed between the grooves is the surface shape of the airfoil. By securing the leading edge shape of the thick airfoil, peeling of the leading edge can be suppressed, and the convex surface between the grooves forms an airfoil surface, ensuring airflow performance and low noise. be able to. In addition, by providing a plurality of grooves along the wind flow on the blade surface, it is possible to produce by a thin molding method and stable production is possible, and furthermore, the groove, that is, the thin wall is formed over almost the entire area of the blade. Since it is formed, the weight of the blade itself can be reduced.

本発明の送風機羽根車は、風量性能及び低騒音化を確保しながら、安定した生産が可能
で、さらに軽量化を図ることができる。
The blower impeller of the present invention can be stably produced while ensuring air volume performance and noise reduction, and can further reduce weight.

第1の発明は、ハブ部と、前記ハブ部の周囲に放射状に延設した翼型の複数枚のブレードからなり、前記ブレードの前縁形状を確保して、前記ブレードの表面における風の流れに沿うように複数の溝部を設け、前記溝部間に形成される凸部の先端の表面形状を、翼型の表面形状としたもので、ブレードの厚肉翼形の前縁形状を確保することにより前縁の剥離を抑制することができ、また各溝部の間の凸部表面が翼型面を形成するため風量性能及び低騒音化を確保することができる。また、ブレード表面における風の流れに沿うように、複数の溝部を設けることにより、薄肉の成形方法で生産可能となり安定した生産が可能となり、さらに、ブレードのほぼ全域に亘って溝部、すなわち薄肉で成形されているため、ブレード単体の軽量化を図ることもできる。   A first invention comprises a hub portion and a plurality of blade-shaped blades radially extending around the hub portion, and ensures a leading edge shape of the blade to allow wind flow on the surface of the blade. A plurality of groove portions are provided along the surface, and the surface shape of the tip of the convex portion formed between the groove portions is an airfoil surface shape, and the leading edge shape of the thick blade shape of the blade is ensured. Therefore, peeling of the leading edge can be suppressed, and since the convex surface between the grooves forms an airfoil surface, air flow performance and low noise can be ensured. In addition, by providing a plurality of grooves along the wind flow on the blade surface, it is possible to produce by a thin molding method and stable production is possible, and furthermore, the groove, that is, the thin wall is formed over almost the entire area of the blade. Since it is formed, the weight of the blade itself can be reduced.

第2の発明は、特に、第1の発明の複数の溝部を、等流量分割線またはブレードの回転中心の同心円に沿って形成するもので、設計が容易となる。すなわち、ブレードの形状規定の延長で溝部の形状を規定することになる。   In the second invention, in particular, the plurality of grooves of the first invention are formed along the concentric circles of the equal flow rate dividing line or the rotation center of the blade, and the design becomes easy. That is, the shape of the groove is defined by extension of the blade shape definition.

第3の発明は、特に、第2の発明のブレードの回転中心の同心円に沿った溝部を、前記ブレードのチップ部の近傍に配置して、等流量分割線に沿った溝部を、ハブ部の近傍に配置したもので、送風性能が劣化することなく、溝部の設計が容易になり生産性の向上に繋がる。   In the third invention, in particular, the groove portion along the concentric circle of the rotation center of the blade of the second invention is arranged in the vicinity of the tip portion of the blade, and the groove portion along the equal flow dividing line is arranged on the hub portion. Since it is arranged in the vicinity, the design of the groove portion is facilitated and the productivity is improved without deteriorating the blowing performance.

第4の発明は、特に、第1〜3のいずれか一つの発明のブレードのチップ部(外周ライン)を、前記ブレードの回転中心の同心円より外側に突出させて凸形状としたもので、外側からの吸い込み流量を増加させることになり送風性能の向上となる。   In particular, the fourth aspect of the invention is such that the tip portion (peripheral line) of the blade according to any one of the first to third aspects protrudes outward from the concentric circle of the rotation center of the blade, and has a convex shape. This increases the suction flow rate from the air and improves the air blowing performance.

第5の発明は、特に、第1〜4のいずれか一つの発明のブレードの前縁のチップ部(外周ライン)に、略三角形の補助翼を配置するもので、外周部での翼面の性能を向上させることになり、送風性能の向上となる。   In the fifth aspect of the invention, in particular, a substantially triangular auxiliary wing is arranged at the tip portion (outer peripheral line) of the leading edge of the blade according to any one of the first to fourth aspects of the invention. Performance will be improved, and ventilation performance will be improved.

第6の発明は、特に、第1〜5のいずれか一つの発明のブレードを2枚以上設けたもので、送風機羽根車の軽量化が図れ、ファン効率の向上に繋がる。   In the sixth aspect of the invention, in particular, two or more blades according to any one of the first to fifth aspects are provided, the weight of the blower impeller can be reduced, and the fan efficiency is improved.

第7の発明は、特に、第1〜6のいずれか一つの発明のブレードの圧力面及び負圧面の両面に溝部を設け、前記負圧面側の溝部を前記圧力面側のそれより大きく設定したもので、送風機羽根車の軽量化が図れると同時に高効率化が図れる。   In the seventh aspect of the invention, in particular, a groove is provided on both the pressure surface and the suction surface of the blade of any one of the first to sixth inventions, and the groove on the suction surface side is set larger than that on the pressure surface side. Therefore, the weight of the blower impeller can be reduced and the efficiency can be improved.

第8の発明は、特に、第1〜7のいずれか一つの発明のブレードの最大肉厚部を、前縁部から弦長の30%以下の位置になるように設定したもので、低騒音化が図れる。   In the eighth aspect of the invention, in particular, the maximum thickness portion of the blade of any one of the first to seventh aspects is set so that it is positioned at 30% or less of the chord length from the front edge portion. Can be achieved.

第9の発明は、特に、第1〜8のいずれか一つの発明のブレードのそり高さ位置を、前縁部から弦長の60%以上になるようにしたもので、ファン効率が向上する。   In the ninth aspect of the invention, in particular, the blade height position of the blade according to any one of the first to eighth aspects is set to be 60% or more of the chord length from the front edge portion, and the fan efficiency is improved. .

第10の発明は、特に、第1〜9のいずれか一つの発明の溝部の幅を、前縁部から後縁に向けて徐々に拡大させたもので、送風性能を劣化させることなく送風機羽根車の軽量化が図れる。   In the tenth invention, in particular, the width of the groove portion of any one of the first to ninth inventions is gradually increased from the front edge portion toward the rear edge, and the fan blades are not deteriorated. Car weight can be reduced.

第11の発明は、特に、第1〜10のいずれか一つの発明の隣り合う溝部間の幅を、ブレードのチップ部からハブ部側に向けて徐々に拡大させたもので、送風性能を劣化させることなく送風機羽根車の軽量化が図れる。   In the eleventh aspect of the invention, in particular, the width between adjacent groove portions of any one of the first to tenth aspects of the invention is gradually increased from the tip portion of the blade toward the hub portion side, and the blowing performance is deteriorated. It is possible to reduce the weight of the blower impeller without making it.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(実施の形態1)
図1は、本発明の第1の実施の形態における送風機羽根車の斜視図、図2は、同送風機羽根車の平面図、図3は、図2のC−C断面図である。
(Embodiment 1)
FIG. 1 is a perspective view of a blower impeller according to the first embodiment of the present invention, FIG. 2 is a plan view of the blower impeller, and FIG. 3 is a cross-sectional view taken along the line CC in FIG.

送風機羽根車2(以下、「羽根車2」という)は、略円柱または円錐台上のハブ部3と、ハブ部3に放射状に延設されたブレード4から構成されている。そして、ブレード4の前縁部5の形状を確保して、ブレード4の負圧面に風の流れ(流線)に沿うように複数の溝部7が設けられている。   The blower impeller 2 (hereinafter referred to as “impeller 2”) includes a hub portion 3 on a substantially circular cylinder or a truncated cone, and blades 4 extending radially on the hub portion 3. A plurality of grooves 7 are provided on the suction surface of the blade 4 along the flow of wind (streamlines) while ensuring the shape of the front edge portion 5 of the blade 4.

そして、各溝部7間の凸部8の形状を翼型表面形状にすることにより、風量性能及び低騒音化を確保することができる。複数の溝部7を設けることにより、薄肉の成形方法で生産可能となり安定した生産が可能となる。また、ブレード4のほぼ全域に亘って溝部7、すなわち薄肉で成形されているため、ブレード4単体の軽量化を図ることもできる。しかも、風の流れ(流線)に沿うように設けられた溝部7の底部に負圧域(低圧域)が形成され後縁剥離を抑制することになり、低騒音化を助長することになる。   And the air volume performance and noise reduction can be ensured by making the shape of the convex part 8 between each groove part 7 into an airfoil surface shape. Providing the plurality of groove portions 7 enables production with a thin molding method and stable production. Further, since the groove portion 7, that is, a thin wall is formed over almost the entire area of the blade 4, the weight of the blade 4 itself can be reduced. In addition, a negative pressure region (low pressure region) is formed at the bottom of the groove portion 7 provided along the wind flow (streamline), and trailing edge peeling is suppressed, and noise reduction is promoted. .

また、本実施の形態では、ブレード4の前縁部5のチップ部12(外周ライン)に、略三角形の補助翼10を配置しており、これにより、ブレード4の外周部での翼面の性能を向上させることになり、送風性能の向上となる。また、補助翼10の負圧面側にも溝部7が延設されており、吸い込み流れがさらに助長される。   Further, in the present embodiment, the substantially triangular auxiliary wing 10 is disposed on the tip portion 12 (outer peripheral line) of the leading edge portion 5 of the blade 4, whereby the blade surface at the outer peripheral portion of the blade 4 is arranged. Performance will be improved, and ventilation performance will be improved. Moreover, the groove part 7 is extended also to the suction surface side of the auxiliary blade 10, and the suction flow is further promoted.

(実施の形態2)
図4は、本発明の第2の実施の形態における送風機羽根車の斜視図、図5は、同送風機羽根車の平面図を示したものである。なお、上記実施の形態と同一部分については、同一符号を用いて、その説明を省略する。
(Embodiment 2)
FIG. 4 is a perspective view of a blower impeller according to the second embodiment of the present invention, and FIG. 5 is a plan view of the blower impeller. In addition, about the same part as the said embodiment, the description is abbreviate | omitted using the same code | symbol.

本実施の形態における羽根車2は、略円柱または円錐台上のハブ部3にブレード4が備えられ、ブレード4の前縁部5の形状を確保して、ブレード4の負圧面に等流量線に沿った溝部7、またはブレード4の回転中心と同心円の溝部7を設けたものである。これによって、送風性能が劣化することなく、溝7の設計が非常に容易になるものである。   In the impeller 2 in the present embodiment, a blade 4 is provided on a hub portion 3 on a substantially circular cylinder or a truncated cone, the shape of the front edge portion 5 of the blade 4 is secured, and an equal flow line is formed on the suction surface of the blade 4. Or a groove portion 7 concentric with the rotation center of the blade 4 is provided. This makes it very easy to design the groove 7 without deteriorating the blowing performance.

(実施の形態3)
図6は、本発明の第3の実施の形態における送風機羽根車の斜視図、図7は、同送風機羽根車の平面図である。なお、上記実施の形態と同一部分については、同一符号を用いて、その説明を省略する。
(Embodiment 3)
FIG. 6 is a perspective view of a blower impeller according to the third embodiment of the present invention, and FIG. 7 is a plan view of the blower impeller. In addition, about the same part as the said embodiment, the description is abbreviate | omitted using the same code | symbol.

本実施の形態における羽根車2は、略円柱または円錐台上のハブ部3にブレード4が備えられている。そして、ブレード4の前縁部5の形状を確保して、ブレード4の負圧面のチップ部12付近に、ブレード4の回転中心と同心円の溝部7を設け、またブレード4の負圧面のハブ部3付近に等流量線に沿った溝部7を設けたものである。これによって、送風性能が劣化することなく、溝部7の設計が容易になり生産性の向上に繋がる。   In the impeller 2 in the present embodiment, a blade 4 is provided on a hub portion 3 on a substantially cylindrical or truncated cone. Then, the shape of the front edge portion 5 of the blade 4 is secured, a groove portion 7 concentric with the rotation center of the blade 4 is provided near the tip portion 12 of the suction surface of the blade 4, and the hub portion of the suction surface of the blade 4 3 is provided with a groove 7 along the equal flow rate line. As a result, the design of the groove 7 is facilitated and the productivity is improved without deteriorating the blowing performance.

(実施の形態4)
図8は、本発明の第4の実施の形態における送風機羽根車の平面図である。なお、上記実施の形態と同一部分については、同一符号を用いて、その説明を省略する。
(Embodiment 4)
FIG. 8 is a plan view of a blower impeller according to the fourth embodiment of the present invention. In addition, about the same part as the said embodiment, the description is abbreviate | omitted using the same code | symbol.

本実施の形態における羽根車2は、ブレード4のチップ部12(外周ライン)を、回転中心の同心円より外側に突出させて凸形状9としたものである。これによって、外周からの吸い込み流れが促進され、送風性能が向上する。また、ブレード4のチップ部12(外周ライン)を回転中心の同心円より外側の領域の負圧面側に、溝部7が設けられており吸い込み流れが助長される。   The impeller 2 in the present embodiment has a convex shape 9 by projecting the tip portion 12 (peripheral line) of the blade 4 outward from the concentric circle at the center of rotation. Thereby, the suction flow from the outer periphery is promoted, and the blowing performance is improved. Further, a groove portion 7 is provided on the suction surface side of the region outside the concentric circle at the center of rotation of the tip portion 12 (outer peripheral line) of the blade 4 to promote the suction flow.

(実施の形態5)
図9は、本発明の第5の実施の形態における送風機羽根車の斜視図、図10は、同送風機羽根車の平面図である。なお、上記実施の形態と同一部分については、同一符号を用いて、その説明を省略する。
(Embodiment 5)
FIG. 9 is a perspective view of a blower impeller according to the fifth embodiment of the present invention, and FIG. 10 is a plan view of the blower impeller. In addition, about the same part as the said embodiment, the description is abbreviate | omitted using the same code | symbol.

本実施の形態における羽根車2は、ハブ部3と2枚のブレード4とで構成されたもので、それにより軽量化が図れ、ファン効率の向上が図れる。   The impeller 2 in the present embodiment is constituted by the hub portion 3 and the two blades 4, thereby reducing the weight and improving the fan efficiency.

(実施の形態6)
図11は、本発明の第6の実施の形態における送風機羽根車のブレードの断面図(断面部は、図2のC−Cと同じ)である。なお、上記実施の形態と同一部分については、同一符号を用いて、その説明を省略する。
(Embodiment 6)
FIG. 11 is a cross-sectional view of a blade of a blower impeller according to a sixth embodiment of the present invention (the cross-sectional portion is the same as CC in FIG. 2). In addition, about the same part as the said embodiment, the description is abbreviate | omitted using the same code | symbol.

本実施の形態における羽根車2は、ブレード4の前縁部5の形状を確保して、ブレード4の負圧面と圧力面に溝部7a、7bを設け、圧力面側の溝部7bを負圧面側の溝部7aより小さくしたもので、これにより、送風性能が劣化することなく、より軽量化が図れる。   The impeller 2 in the present embodiment secures the shape of the front edge portion 5 of the blade 4, and provides groove portions 7 a and 7 b on the negative pressure surface and the pressure surface of the blade 4, and the groove portion 7 b on the pressure surface side is on the negative pressure surface side. Therefore, the weight can be further reduced without deteriorating the blowing performance.

(実施の形態7)
図12は、本発明の第7の実施の形態における送風機羽根車のブレードの断面図(断面部は、図2のD−D)である。なお、上記実施の形態と同一部分については、同一符号を用いて、その説明を省略する。
(Embodiment 7)
FIG. 12: is sectional drawing (a cross-sectional part is DD of FIG. 2) of the braid | blade of the fan impeller in the 7th Embodiment of this invention. In addition, about the same part as the said embodiment, the description is abbreviate | omitted using the same code | symbol.

本実施の形態における羽根車2は、図12に示すように、ブレード4の肉厚分布において、最大肉厚位置を、前縁部5から30%以下になるように配置したものである。すなわち、弦長L、最大肉厚位置L1として、L1/L = 0.15 < 0.3としたもので、この形状により、ブレード4の前縁剥離を抑制して送風性能の向上となる。   As shown in FIG. 12, the impeller 2 in the present embodiment is arranged such that the maximum thickness position in the thickness distribution of the blade 4 is 30% or less from the front edge portion 5. That is, L1 / L = 0.15 <0.3 is set as the chord length L and the maximum wall thickness position L1, and this shape suppresses the leading edge peeling of the blade 4 and improves the blowing performance.

(実施の形態8)
図13は、本発明の第8の実施の形態における送風機羽根車のブレードの断面図(断面部は、図2のE−E)である。なお、上記実施の形態と同一部分については、同一符号を用いて、その説明を省略する。
(Embodiment 8)
FIG. 13: is sectional drawing (a cross-sectional part is EE of FIG. 2) of the braid | blade of the fan impeller in the 8th Embodiment of this invention. In addition, about the same part as the said embodiment, the description is abbreviate | omitted using the same code | symbol.

本実施の形態における羽根車2は、図13に示すように、ブレード4のそり高さ位置を、前縁部5から60%以上に配置したものある。すなわち、弦長L、最大肉厚位置L1として、L1/L = 0.63 > 0.6としたもので、この形状により、ブレード4の後縁剥離を抑制して乱流騒音の低騒音化を図ることができる。   In the impeller 2 in the present embodiment, as shown in FIG. 13, the warp height position of the blade 4 is arranged at 60% or more from the front edge portion 5. In other words, the chord length L and the maximum wall thickness position L1 are set to L1 / L = 0.63> 0.6, and this shape suppresses the trailing edge separation of the blade 4 and reduces turbulent noise. Can be achieved.

(実施の形態9)
図14は、本発明の第9の実施の形態における送風機羽根車のブレードの平面図である。なお、上記実施の形態と同一部分については、同一符号を用いて、その説明を省略する。
(Embodiment 9)
FIG. 14 is a plan view of a blade of a blower impeller according to the ninth embodiment of the present invention. In addition, about the same part as the said embodiment, the description is abbreviate | omitted using the same code | symbol.

本実施の形態における羽根車2は、図14に示すように、ブレード4に配置された溝部
7の幅を、前縁部5から後縁6に向けて徐々に拡大させたもので、これにより、送風性能を劣化させることなく、より軽量化が図れる。
As shown in FIG. 14, the impeller 2 in the present embodiment is obtained by gradually increasing the width of the groove portion 7 arranged in the blade 4 from the front edge portion 5 toward the rear edge 6. The weight can be further reduced without deteriorating the blowing performance.

(実施の形態10)
図15は、本発明の第10の実施の形態における送風機羽根車の平面図である。なお、上記実施の形態と同一部分については、同一符号を用いて、その説明を省略する。
(Embodiment 10)
FIG. 15 is a plan view of a blower impeller according to the tenth embodiment of the present invention. In addition, about the same part as the said embodiment, the description is abbreviate | omitted using the same code | symbol.

本実施の形態における羽根車2は、図15に示すように、ブレード4に配置された隣り合う溝部7間の幅a、bを、チップ部12(外周部)からハブ3(内周部)に向けて徐々に拡大させたもので、送風性能を劣化させることなく、より軽量化が図れる。   As shown in FIG. 15, the impeller 2 in the present embodiment changes the widths a and b between adjacent groove portions 7 arranged on the blade 4 from the tip portion 12 (outer peripheral portion) to the hub 3 (inner peripheral portion). It is gradually enlarged toward the end, and can be further reduced in weight without deteriorating the blowing performance.

以上のように、本発明にかかる送風機羽根車は、風量性能及び低騒音化を確保しながら、安定した生産が可能で、さらに軽量化を図ることができるもので、空気調和機、送風機、空気清浄機など、送風機羽根車を用いる各種機器に適用できる。   As described above, the blower impeller according to the present invention is capable of stable production while ensuring air volume performance and noise reduction, and can further reduce the weight. The air conditioner, blower, air It can be applied to various devices using a blower impeller such as a cleaner.

本発明の実施の形態1における送風機羽根車の斜視図The perspective view of the fan impeller in Embodiment 1 of this invention 同送風機羽根車の平面図Top view of the blower impeller 図2のC−C断面図CC sectional view of FIG. 本発明の実施の形態2における送風機羽根車の斜視図The perspective view of the fan impeller in Embodiment 2 of this invention 同送風機羽根車の平面図Top view of the blower impeller 本発明の実施の形態3における送風機羽根車の斜視図The perspective view of the fan impeller in Embodiment 3 of this invention 同送風機羽根車の平面図Top view of the blower impeller 本発明の実施の形態4における送風機羽根車の平面図The top view of the air blower impeller in Embodiment 4 of this invention 本発明の実施の形態5における送風機羽根車の斜視図The perspective view of the fan impeller in Embodiment 5 of this invention 同送風機羽根車の平面図Top view of the blower impeller 本発明の実施の形態6における送風機羽根車のブレードの断面図(断面部は、図2のC−Cと同じ)Sectional drawing of the blade of the fan impeller in Embodiment 6 of this invention (a cross-sectional part is the same as CC of FIG. 2) 本発明の実施の形態7における送風機羽根車のブレードの断面図(断面部は、図2のD−D)Sectional drawing of the blade of the fan impeller in Embodiment 7 of this invention (a cross-sectional part is DD of FIG. 2). 本発明の実施の形態8における送風機羽根車のブレードの断面図(断面部は、図2のE−E)Sectional drawing of the blade of the fan impeller in Embodiment 8 of this invention (a cross-sectional part is EE of FIG. 2). 本発明の実施の形態9における送風機羽根車のブレードの平面図The top view of the blade of the fan impeller in Embodiment 9 of this invention 本発明の実施の形態10における送風機羽根車の平面図The top view of the fan impeller in Embodiment 10 of this invention 従来の送風機羽根車の斜視図A perspective view of a conventional blower impeller 同送風機羽根車のブレードの平面図Top view of the blades of the blower impeller 図17のA−A断面図AA sectional view of FIG. 図17のB−B断面図BB sectional view of FIG.

符号の説明Explanation of symbols

2 送風機羽根車(羽根車)
3 ハブ部
4 ブレード
5 前縁部
6 後縁
7、7a、7b 溝部
8 凸部
2 Blower impeller (impeller)
3 Hub portion 4 Blade 5 Front edge portion 6 Rear edge 7, 7a, 7b Groove portion 8 Convex portion

Claims (11)

ハブ部と、前記ハブ部の周囲に放射状に延設した翼型の複数枚のブレードからなり、前記ブレードの前縁形状を確保して、前記ブレードの表面における風の流れに沿うように複数の溝部を設け、前記溝部間に形成される凸部の先端の表面形状を、翼型の表面形状としたことを特徴とする送風機羽根車。 And a plurality of blade-shaped blades extending radially around the hub portion, securing a leading edge shape of the blade, and a plurality of blades along the wind flow on the blade surface A blower impeller characterized in that a groove portion is provided, and a surface shape of a tip of a convex portion formed between the groove portions is an airfoil surface shape. 複数の溝部を、等流量分割線またはブレードの回転中心の同心円に沿って形成することを特徴とする請求項1に記載の送風機羽根車。 The blower impeller according to claim 1, wherein the plurality of groove portions are formed along a concentric circle at an equal flow rate dividing line or a rotation center of the blade. ブレードの回転中心の同心円に沿った溝部を、前記ブレードのチップ部の近傍に配置して、等流量分割線に沿った溝部を、ハブ部の近傍に配置したことを特徴とする請求項2に記載の送風機羽根車。 The groove portion along the concentric circle at the rotation center of the blade is disposed in the vicinity of the tip portion of the blade, and the groove portion along the equal flow dividing line is disposed in the vicinity of the hub portion. The blower impeller as described. ブレードのチップ部(外周ライン)を、前記ブレードの回転中心の同心円より外側に突出させて凸形状としたことを特徴とする請求項1〜3のいずれか1項に記載の送風機羽根車。 The blower impeller according to any one of claims 1 to 3, wherein a tip portion (peripheral line) of the blade is projected outward from a concentric circle at the rotation center of the blade. ブレードの前縁のチップ部(外周ライン)に、略三角形の補助翼を配置することを特徴とする請求項1〜4のいずれか1項に記載の送風機羽根車。 The blower impeller according to any one of claims 1 to 4, wherein a substantially triangular auxiliary wing is disposed at a tip portion (peripheral line) at a leading edge of the blade. ブレードを2枚以上設けたことを特徴とする請求項1〜5のいずれか1項に記載の送風機羽根車。 The blower impeller according to any one of claims 1 to 5, wherein two or more blades are provided. ブレードの圧力面及び負圧面の両面に溝部を設け、前記負圧面側の溝部を前記圧力面側のそれより大きく設定したことを特徴とする請求項1〜6のいずれか1項に記載の送風機羽根車。 The blower according to any one of claims 1 to 6, wherein a groove is provided on both the pressure surface and the suction surface of the blade, and the groove on the suction surface side is set larger than that on the pressure surface side. Impeller. ブレードの最大肉厚部を、前縁部から弦長の30%以下の位置になるように設定したことを特徴とする請求項1〜7のいずれか1項に記載の送風機羽根車。 The blower impeller according to any one of claims 1 to 7, wherein a maximum thickness portion of the blade is set to be at a position of 30% or less of the chord length from the front edge portion. ブレードのそり高さ位置を、前縁部から弦長の60%以上になるようにしたことを特徴とする請求項1〜8のいずれか1項に記載の送風機羽根車。 The blower impeller according to any one of claims 1 to 8, wherein a sled height position of the blade is 60% or more of a chord length from a front edge portion. 溝部の幅を、前縁部から後縁に向けて徐々に拡大させたことを特徴とする請求項1〜9のいずれか1項に記載の送風機羽根車。 The fan impeller according to any one of claims 1 to 9, wherein the width of the groove portion is gradually increased from the front edge portion toward the rear edge. 隣り合う溝部間の幅を、ブレードのチップ部からハブ部側に向けて徐々に拡大させたことを特徴とする請求項1〜10のいずれか1項に記載の送風機羽根車。 The blower impeller according to any one of claims 1 to 10, wherein a width between adjacent groove portions is gradually increased from a tip portion of a blade toward a hub portion side.
JP2006198965A 2006-07-21 2006-07-21 Blower impeller Expired - Fee Related JP4910534B2 (en)

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