JP4492060B2 - Blower impeller - Google Patents

Blower impeller Download PDF

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JP4492060B2
JP4492060B2 JP2003287553A JP2003287553A JP4492060B2 JP 4492060 B2 JP4492060 B2 JP 4492060B2 JP 2003287553 A JP2003287553 A JP 2003287553A JP 2003287553 A JP2003287553 A JP 2003287553A JP 4492060 B2 JP4492060 B2 JP 4492060B2
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wing
main
auxiliary
chord length
main wing
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JP2005054717A (en
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善樹 泉
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Panasonic Corp
Panasonic Holdings Corp
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Panasonic Corp
Matsushita Electric Industrial Co Ltd
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    • 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

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

Description

本発明は、空気調和機に用いられる送風機羽根車に関するもので、特に、同羽根車の静圧効率の向上に関わる構成に関する。   The present invention relates to a blower impeller used in an air conditioner, and more particularly to a configuration related to improvement of static pressure efficiency of the impeller.

主翼に対して補助翼を設けた羽根車として、ラジエタ−５０の下流側にシュラウドリング５１と、ハブ５２に固定された主翼５３とに必要なクリアランスをとり、補助翼５４が主翼５３の中心より下流側にオフセットされて主翼５３に設置されている。この構成のより、チップクリアランスの隙間の部分の流れを増速して、チップクリアランス部の逆流を減少させて、ファン効率を向上させると言うものがある（例えば特許文献１参照）。
特開平１０−２０５３３０号公報 As an impeller provided with auxiliary wings for the main wings, the clearance required for the shroud ring 51 and the main wings 53 fixed to the hub 52 is provided on the downstream side of the radiator 50, and the auxiliary wings 54 are located from the center of the main wings 53. It is offset on the downstream side and installed on the main wing 53. According to this configuration, there is a technique in which fan flow is improved by accelerating the flow in the gap portion of the chip clearance and reducing the backflow of the chip clearance portion (see, for example, Patent Document 1).
JP-A-10-205330

しかしながら、上記の従来の構成では、主翼５３のチップクリアランスに生じる逆流を減少させてファン効率を向上させようとするものであり、補助翼５４によるファン効率改善効果は、微細である。却って、補助翼５４によって騒音が増加するものである。更に、翼枚数は、２枚以上の複数枚であり、空力性能寄与に対する翼面積の投入量が大きく、この事により翼による流体摩擦が大きくなり、ファン効率の向上には、ある程度の限界があった。   However, in the conventional configuration described above, the reverse flow generated in the tip clearance of the main wing 53 is reduced to improve the fan efficiency, and the effect of improving the fan efficiency by the auxiliary wing 54 is minute. On the other hand, noise is increased by the auxiliary blades 54. Furthermore, the number of blades is two or more, and the amount of blade area input for aerodynamic performance contribution is large, which increases fluid friction by the blades, and there is a certain limit to improving fan efficiency. It was.

上記課題を解決するために本発明は、円筒状のハブに、複数枚の翼を設けてなるプロペラファンにおいて、翼枚数が２枚からなる主翼を設け、主翼の外周側弦長がハブ側弦長より長く、主翼の間に翼枚数が全体として２枚からなる略扇状の補助翼を設け、補助翼の半径方向長さが主翼の半径方向長さより短く、且つ、補助翼の羽根高さが主翼の羽根高さより低く構成した送風機羽根車を提供するものである。   In order to solve the above problems, the present invention provides a propeller fan in which a plurality of blades are provided on a cylindrical hub, a main wing having two blades is provided, and the outer wing chord length of the wing is a hub side chord. A substantially fan-shaped auxiliary wing having two blades as a whole between the main wings is provided between the main wings, the radial length of the auxiliary wings is shorter than the radial length of the main wings, and the blade height of the auxiliary wings is A blower impeller configured lower than the blade height of the main wing is provided.

上記構成によって、主翼の枚数が２枚であるので、主に空力性能に寄与する翼面積の投入量が適正であるので、流体摩擦が少なく、ファン効率が高い。また、２枚の主翼のみでは、羽根車の回転騒音が乱流騒音より非常に高く、とても耳障りである。翼枚数ｚと回転数Nｒｐｍとすると、主翼の間に設けられた補助翼も空力仕事の寄与するので、全体として、翼枚数は４枚と言え、それぞれに空力仕事をするので、空力仕事が分散させるので、翼１枚当たりの翼面上の圧力変動のレベルが小さくなり、回転騒音Nz音のレベルは、乱流騒音のレベルより低く、聴感も良好である。補助翼の半径方向長さが主翼の半径方向長さより短く、且つ、補助翼の羽根高さが主翼の羽根高さより低いので、主翼から発生する翼端渦に補助翼が、干渉することがなく、羽根車としての騒音も低くできる。   With the above configuration, since the number of main wings is two, the input amount of the wing area mainly contributing to aerodynamic performance is appropriate, so that fluid friction is small and fan efficiency is high. Also, with only two main wings, the impeller rotational noise is much higher than turbulent noise, which is very disturbing. If the number of blades z and the number of revolutions Nrpm are set, the auxiliary blades installed between the main wings also contribute to aerodynamic work, so the overall number of blades can be said to be 4 and aerodynamic work is distributed to each. Therefore, the level of pressure fluctuation on the blade surface per blade becomes small, the level of the rotational noise Nz sound is lower than the level of turbulent noise, and the audibility is good. Since the radial length of the auxiliary wing is shorter than the radial length of the main wing and the blade height of the auxiliary wing is lower than the blade height of the main wing, the auxiliary wing does not interfere with the tip vortex generated from the main wing. The noise as an impeller can be reduced.

上記実施例から明らかなように、円筒状のハブに、複数枚の翼を設けてなるプロペラファンにおいて、翼枚数が２枚からなる主翼を設け、主翼の外周側弦長がハブ側弦長より長く、主翼の間に翼枚数が全体として２枚からなる略扇状の補助翼を設け、補助翼の半径方向長さが主翼の半径方向長さより短く、且つ、補助翼の羽根高さが主翼の羽根高さより低く構成することによって、主翼の枚数が２枚であるので、主に空力性能に寄与する翼面積の投入量が適正であるので、流体摩擦が少なく、ファン効率が高い。また、２枚の主翼のみでは、羽根車の回転騒音が乱流騒音より非常に高く、とても耳障りである。翼枚数ｚと回転数Nｒｐｍとすると、主翼の間に設けられた補助翼も空力仕事の寄与するので、全体として、翼枚数は４枚と言え、それぞれに空力仕事をするので、空力仕事が分散させるので、翼１枚当たりの翼面上の圧力変動のレベルが小さくなり、回転騒音Nz音のレベルは、乱流騒音のレベルより低く、聴感も良好である。補助翼の半径方向長さが主翼の半径方向長さより短く、且つ、補助翼の羽根高さが主翼の羽根高さより低いので、主翼から発生する翼端渦に補助翼が、干渉することがなく、羽根車としての騒音も低くできる。   As is clear from the above embodiment, in a propeller fan in which a plurality of blades are provided on a cylindrical hub, a main wing having two blades is provided, and the outer wing chord length of the wing is greater than the hub chord length. A long, substantially fan-shaped auxiliary wing composed of two blades is provided between the main wings, the radial length of the auxiliary wing is shorter than the radial length of the main wing, and the height of the auxiliary wing is higher than that of the main wing. By configuring the blade lower than the blade height, the number of main wings is two, and the amount of blade area that mainly contributes to aerodynamic performance is appropriate, so that fluid friction is small and fan efficiency is high. Also, with only two main wings, the impeller rotational noise is much higher than turbulent noise, which is very disturbing. If the number of blades z and the number of revolutions Nrpm are set, the auxiliary blades installed between the main wings also contribute to aerodynamic work, so the overall number of blades can be said to be 4 and aerodynamic work is distributed to each. Therefore, the level of pressure fluctuation on the blade surface per blade is reduced, the level of the rotational noise Nz sound is lower than the level of turbulent noise, and the audibility is good. Since the radial length of the auxiliary wing is shorter than the radial length of the main wing and the blade height of the auxiliary wing is lower than the blade height of the main wing, the auxiliary wing does not interfere with the tip vortex generated from the main wing. The noise as an impeller can be reduced.

本発明の第１の実施の形態は、ハブに複数枚の翼を設けてなるプロペラファンにおいて、前記翼を主翼と補助翼から構成し、前記主翼の外周側弦長がハブ側弦長より長く、前記主翼の前縁を半径方向に対して回転方向に前傾した螺旋曲線とし、前記主翼の間に前記補助翼を設け、前記補助翼は外周側弦長がハブ側弦長より長く、前記補助翼の前縁を半径方向の直線とし、前記補助翼の半径方向長さが前記主翼の半径方向長さより短く、且つ、前記補助翼の羽根高さが前記主翼の羽根高さより低くしたことを特徴とする。これにより、主翼から発生する翼端渦に補助翼が、干渉することがなく、羽根車としての騒音も低くできる。 According to a first embodiment of the present invention, in a propeller fan in which a plurality of blades are provided on a hub, the blades are composed of a main wing and an auxiliary wing, and the outer chord length of the main wing is longer than the hub chord length. The leading edge of the main wing is a spiral curve inclined forward in the rotational direction with respect to the radial direction, the auxiliary wing is provided between the main wings, the outer wing chord length is longer than the hub chord length, The leading edge of the auxiliary wing is a straight line in the radial direction, the radial length of the auxiliary wing is shorter than the radial length of the main wing , and the blade height of the auxiliary wing is lower than the blade height of the main wing. Features. Thereby, the auxiliary wings do not interfere with the tip vortex generated from the main wing, and the noise as the impeller can be reduced.

本発明の第２の実施の形態は、円筒状のハブに、複数枚の翼を設けてなるプロペラファンにおいて、主翼を設け、前記主翼は外周側弦長がハブ側弦長より長く、前記主翼の前縁を半径方向の直線とし、前記主翼の間に補助翼を設け、前記補助翼は外周側弦長がハブ側弦長より長く、前記補助翼の前縁を半径方向に対して回転方向に前傾した直線とし、前記補助翼の半径方向長さが前記主翼の半径方向長さより短く、且つ、前記補助翼の羽根高さが前記主翼の羽根高さより低くしたことを特徴とする。これにより、主翼から発生する翼端渦に補助翼が、干渉することがなく、羽根車としての騒音も低くできる。 According to a second embodiment of the present invention, in a propeller fan in which a plurality of blades are provided on a cylindrical hub, a main wing is provided, and the main wing has an outer chord length longer than a hub chord length. The leading edge of the auxiliary blade is provided with an auxiliary wing between the main wings, and the auxiliary wing has an outer chord length longer than a hub chord length, and the leading edge of the auxiliary wing rotates in the radial direction. The auxiliary wing is shorter than the main wing in the radial direction, and the auxiliary wing has a lower blade height than the main wing. Thereby, the auxiliary wings do not interfere with the tip vortex generated from the main wing, and the noise as the impeller can be reduced.

本発明の第３の実施の形態は、円筒状のハブに、複数枚の翼を設けてなるプロペラファンにおいて、主翼を設け、前記主翼は外周側弦長がハブ側弦長より長く、前記主翼の前縁を半径方向の直線とし、前記主翼の間に補助翼を設け、前記補助翼は外周側弦長がハブ側弦長より長く、前記補助翼の前縁を半径方向に対して回転方向に前傾した螺旋曲線とし、前記補助翼の半径方向長さが前記主翼の半径方向長さより短く、且つ、前記補助翼の羽根高さが前記主翼の羽根高さより低くしたことを特徴とする。これにより、補助翼の半径方向長さが主翼の半径方向長さより短く、且つ、補助翼の羽根高さが主翼の羽根高さより低いので、主翼から発生する翼端渦に補助翼が、干渉することがなく、羽根車としての騒音も低くできる。 Third embodiment of the present invention, the cylindrical hub, the propeller fan formed by providing a plurality of blades, the wing is provided, wherein the wing outer peripheral side chord length is longer than the hub-side chord length, the wing The leading edge of the auxiliary blade is provided with an auxiliary wing between the main wings, and the auxiliary wing has an outer chord length longer than a hub chord length, and the leading edge of the auxiliary wing rotates in the radial direction. The auxiliary wing has a spiral curve that is forwardly inclined, the radial length of the auxiliary wing is shorter than the radial length of the main wing, and the blade height of the auxiliary wing is lower than the blade height of the main wing. Thereby, since the radial length of the auxiliary wing is shorter than the radial length of the main wing and the blade height of the auxiliary wing is lower than the blade height of the main wing, the auxiliary wing interferes with the tip vortex generated from the main wing. The noise as an impeller can be reduced.

本発明の第４の実施の形態は、前記主翼の枚数を２枚としたことを特徴とする。これにより、主翼の枚数が２枚であるので、主に空力性能に寄与する翼面積の投入量が適正であるので、流体摩擦が少なく、ファン効率が高い。   The fourth embodiment of the present invention is characterized in that the number of the main wings is two. As a result, since the number of main wings is two, the amount of the wing area that mainly contributes to aerodynamic performance is appropriate, so there is little fluid friction and fan efficiency is high.

以下に、本発明の一実施例の空調用送風機羽根車について、図面を参照して説明する。   Hereinafter, a blower impeller for air conditioning according to an embodiment of the present invention will be described with reference to the drawings.

（参考例１）
本発明に関する第１の参考例を、図１・２・３・４を用いて説明する。 ( Reference Example 1)
A first reference example relating to the present invention will be described with reference to FIGS.

図１は、本発明に関する第１の参考例の空調用送風機羽根車の平面図。図２は、本発明に関する第１の参考例の空調用送風機羽根車の子午面図。図３は、本発明に関する第１の参考例の空調用送風機羽根車における翼端渦の発生状況を示した模式図。図４は、本発明に関する第１の参考例の空調用送風機羽根車の動作状況を示した模式図である。 FIG. 1 is a plan view of a blower impeller for air conditioning according to a first reference example relating to the present invention. FIG. 2 is a meridional view of an air-conditioning fan impeller of a first reference example relating to the present invention. FIG. 3 is a schematic diagram showing the state of occurrence of blade tip vortices in the air-conditioning fan impeller of the first reference example relating to the present invention. FIG. 4 is a schematic diagram showing an operation state of the air-conditioning fan impeller of the first reference example relating to the present invention.

図１に於いて、円筒状のハブ４に、複数枚の翼を設けてなるプロペラファン１において、翼枚数が２枚からなる主翼２を設け、主翼の外周側弦長がハブ側弦長より長く、主翼２の間に翼枚数が全体として２枚からなる略扇状の補助翼３を設けている。前縁５から空気が流入し、後縁６から流出する。７がチップ部である。また、図２において、補助翼３の半径方向長さL2が主翼の半径方向長さL1より短く、且つ、補助翼の羽根高さH2が主翼の羽根高さH1より低く構成した空調用送風機羽根車を提供するものである。また、図３のように、翼端渦Dは、主翼２の前縁５の外周の角から、発生して主翼２上を移動して、主翼２の途中から剥離する。 In FIG. 1, in a propeller fan 1 having a plurality of blades provided on a cylindrical hub 4, a main wing 2 having two blades is provided, and the chord length on the outer peripheral side of the main wing is greater than the chord length on the hub side. A long, substantially fan-shaped auxiliary wing 3 having two wings as a whole is provided between the main wings 2. Air flows in from the leading edge 5 and flows out from the trailing edge 6. Reference numeral 7 denotes a chip portion. Further, in FIG. 2, the radial length L 2 of the aileron 3 is shorter than the radial length L 1 of the main wing, and the vanes of the auxiliary blade height H 2 is configured lower than the blade height H 1 of the main wing A blower impeller for air conditioning is provided. Further, as shown in FIG. 3, the blade tip vortex D is generated from the outer peripheral corner of the leading edge 5 of the main wing 2, moves on the main wing 2, and peels off from the middle of the main wing 2.

この羽根車１を、図４のように適当なケ−シング９に収め、モ−タ８により回転させる事で空力仕事をさせるものである。   The impeller 1 is housed in a suitable casing 9 as shown in FIG. 4 and is rotated by a motor 8 to perform aerodynamic work.

そして、この構成によって、主翼２の枚数が２枚であるので、主に空力性能に寄与する翼面積の投入量が適正であるので、流体摩擦が少なく、ファン効率が高い。また、２枚の主翼２のみでは、羽根車の回転騒音が乱流騒音より非常に高く、とても耳障りである。翼枚数ｚと回転数Nｒｐｍとすると、主翼２の間に設けられた補助翼３も空力仕事の寄与するので、全体として、翼枚数は４枚と言え、それぞれに空力仕事をするので、空力仕事が分散させるので、翼１枚当たりの翼面上の圧力変動のレベルが小さくなり、回転騒音Nz音のレベルは、乱流騒音のレベルより低く、聴感も良好である。補助翼３の半径方向長さL2が主翼の半径方向長さL1より短く、且つ、補助翼の羽根高さH2が主翼の羽根高さH1より低いので、主翼から発生する翼端渦に補助翼が、干渉することがなく、羽根車としての騒音も低くできる。 With this configuration, since the number of the main wings 2 is two, the amount of the wing area that mainly contributes to the aerodynamic performance is appropriate, so the fluid friction is small and the fan efficiency is high. Moreover, with only two main wings 2, the rotational noise of the impeller is much higher than the turbulent noise, which is very disturbing. If the number of blades z and the number of revolutions Nrpm are set, the auxiliary blade 3 provided between the main wings 2 also contributes to aerodynamic work, so the number of blades as a whole can be said to be 4 and each aerodynamic work. Therefore, the level of pressure fluctuation on the blade surface per blade is reduced, the level of the rotational noise Nz sound is lower than the level of turbulent noise, and the audibility is also good. Since the radial length L 2 of the auxiliary wing 3 is shorter than the radial length L 1 of the main wing and the blade height H 2 of the auxiliary wing is lower than the blade height H 1 of the main wing, the blade tip generated from the main wing The auxiliary wings do not interfere with the vortex, and the noise as the impeller can be reduced.

（参考例２）
本発明に関する第２の参考例を、図５・６を用いて、説明する。 ( Reference Example 2)
A second reference example relating to the present invention will be described with reference to FIGS.

図５は、本発明に関する第２の参考例の空調用送風機羽根車の平面図。図６は、本発明に関する第２の参考例の空調用送風機羽根車の子午面図である。 FIG. 5 is a plan view of a blower impeller for air conditioning according to a second reference example relating to the present invention. FIG. 6 is a meridional view of an air conditioning fan impeller of a second reference example relating to the present invention.

図５に於いて、翼枚数が２枚からなる主翼２を設け、主翼２の外周側弦長がハブ側弦長より長く、主翼の外周側前縁に三角形の一辺を合わせる形で三角状の翼１０をつけて、翼の半径を同一とし、主翼２の間に翼枚数が全体として２枚からなる略扇状の補助翼３を設け、補助翼３の半径方向長さL2が主翼の半径方向長さL1より短く、且つ、補助翼の羽根高さH2が主翼の羽根高さH1より低く構成した空調用送風機羽根車である。 In FIG. 5, a main wing 2 having two blades is provided, the outer chord length of the main wing 2 is longer than the hub chord length, and a triangular shape is formed by aligning one side of the triangle with the outer peripheral side leading edge of the main wing. with the blade 10, the radius of the blades at the same, the sector-shaped aileron 3 consisting of two whole wings number between the wing 2 is provided, the radial length L 2 of the aileron 3 is the wing radius shorter than direction length L 1, and the vanes of the auxiliary blade height H 2 is the air conditioning blower impeller configured lower than the blade height H 1 of the main wing.

そして、この構成によって、主翼２の外周側前縁５に三角形の一辺を合わせる形で三角状の翼１０をつけて、翼の半径を同一とすることで、三角状の翼１０の頂点を起点として、翼端渦Dが発生する。この三角状の翼１０は、翼端渦Dの発生の状況を規定する作用を有する。そのため、補助翼２の半径方向長さL2が主翼の半径方向長さL1より短く、且つ、補助翼３の羽根高さH2が主翼の羽根高さH1より低いのと相まって、主翼２から発生する翼端渦Dに補助翼３が、干渉することなしに、三角状の翼１０が翼端渦Dをコントロ−ルできるものであり、羽根車１としての騒音も十分に低くできる。 And by this structure, the triangular wing | blade 10 is attached to the outer peripheral side front edge 5 of the main wing | blade 2 in the shape where one side of a triangle is match | combined, and the radius of a wing | blade is made the same, The origin of the triangular wing | blade 10 is made into the starting point. As a result, the tip vortex D is generated. The triangular wing 10 has an action of defining the state of generation of the wing tip vortex D. Therefore, coupled with the fact that the radial length L 2 of the auxiliary wing 2 is shorter than the radial length L 1 of the main wing and the blade height H 2 of the auxiliary wing 3 is lower than the blade height H 1 of the main wing, The auxiliary blade 3 can control the blade tip vortex D without the auxiliary blade 3 interfering with the blade tip vortex D generated from the blade 2, and the noise as the impeller 1 can be sufficiently reduced. .

（実施例１）
本発明の第１の実施例を、図７・８を用いて、説明する。 (Example 1 )
The first embodiment of the present invention, with reference to FIG. 7, 8, will be described.

図７は、本発明の第１の実施例の空調用送風機羽根車の平面図。図８は、本発明の第１の実施例の空調用送風機羽根車の子午面図である。 FIG. 7 is a plan view of a blower impeller for air conditioning according to the first embodiment of the present invention. FIG. 8 is a meridional view of the air-conditioning fan impeller of the first embodiment of the present invention.

図７，８に於いて、翼枚数が２枚からなる主翼２を設け、主翼２の外周側弦長がハブ側弦長より長く、主翼２の前縁１１を半径方向に対して回転方向に前傾した螺旋曲線にて構成し、主翼２の間に翼枚数が全体として２枚からなる補助翼３を設け、補助翼３は外周側弦長がハブ側弦長より長く、補助翼３の前縁を半径方向の直線として構成し、補助翼３の半径方向長さＬ２が主翼の半径方向長さＬ１より短く、且つ、補助翼３の羽根高さＨ２が主翼２の羽根高さＨ１より低く構成した空調用送風機羽根車を提供するものである。 7 and 8 , a main wing 2 having two wings is provided, the chord length on the outer peripheral side of the main wing 2 is longer than the chord length on the hub side, and the leading edge 11 of the main wing 2 is rotated in the rotational direction with respect to the radial direction. constituted by inclined forward the screw旋曲line, the aileron 3 consisting of two whole wings number between the wing 2 is provided, aileron 3 the outer peripheral side chord length is longer than the hub-side chord length, aileron 3 is configured as a straight line in the radial direction, the radial length L 2 of the auxiliary wing 3 is shorter than the radial length L 1 of the main wing, and the blade height H 2 of the auxiliary wing 3 is equal to that of the main wing 2 . there is provided an air conditioning blower impeller configured lower than the blade height H 1.

そして、この構成によって、主翼２の前縁１１を半径方向に対して回転方向に前傾した螺旋曲線にすることで、螺旋曲線の頂点を起点として、主翼２の翼端渦Ｄが発生するので、翼端渦Ｄの発生の状況を規定する作用を有する。そのため、補助翼３の半径方向長さＬ２が主翼の半径方向長さＬ１より短く、且つ、補助翼の羽根高さＨ２が主翼の羽根高さＨ１より低いのと相まって、主翼２から発生する翼端渦Ｄに補助翼３が、干渉することなしに、前縁１１の螺旋曲線の頂点が翼端渦Ｄをコントロ−ルできるものであり、羽根車１としての騒音も十分に低くできる。 Then, by this configuration, by threadably旋曲lines the leading edge 11 and inclined forward in the rotational direction with respect to the radial direction of the main wing 2, starting from the apex of the spiral curve, tip vortices D wing 2 occurs Therefore, it has the effect | action which prescribes | regulates the condition of generation | occurrence | production of the tip vortex D. Therefore, the radial length L 2 of the aileron 3 is shorter than the radial length L 1 of the main wing, and, together with the blade height H 2 of the aileron that less than the blade height H 1 of the main wing, wing 2 The tip of the spiral curve of the leading edge 11 can control the blade tip vortex D without the auxiliary blade 3 interfering with the blade tip vortex D generated from the blade, and the noise as the impeller 1 is also sufficient. Can be lowered.

（実施例２）
本発明の第２の実施例を、図９・１０を用いて、説明する。 (Example 2 )
A second embodiment of the present invention, with reference to FIG. 9, 10, will be described.

図９は、本発明の第２の実施例の空調用送風機羽根車の平面図。図１０は、本発明の第
２の実施例の空調用送風機羽根車の子午面図である。 FIG. 9 is a plan view of a blower impeller for air conditioning according to a second embodiment of the present invention. FIG. 10 shows the first aspect of the present invention.
It is a meridional view of the air-conditioning fan impeller of 2 Example.

図９，１０において、翼枚数が２枚からなる主翼２を設け、主翼２の外周側弦長がハブ側弦長より長く、主翼２の前縁５を半径方向の直線とし、主翼２の間に翼枚数が全体として２枚からなる補助翼３を設け、補助翼３は外周側弦長がハブ側弦長より長く、補助翼３の前縁１２を半径方向に対して回転方向に前傾させた直線で構成し、補助翼３の半径方向長さＬ２が前記主翼の半径方向長さＬ１より短く、且つ、補助翼の羽根高さＨ２が主翼の羽根高さＨ１より低く構成した空調用送風機羽根車を提供するものである。 9 and 10 , the main wing 2 having two blades is provided, the chord length on the outer peripheral side of the main wing 2 is longer than the chord length on the hub side, and the leading edge 5 of the main wing 2 is a straight line in the radial direction. The auxiliary blade 3 having two blades as a whole is provided in the auxiliary blade 3. The auxiliary blade 3 has an outer chord length longer than the hub chord length, and the leading edge 12 of the auxiliary blade 3 is inclined forward in the rotational direction with respect to the radial direction. constituted by a straight line obtained by the radial length L 2 of the aileron 3 is shorter than the radial length L 1 of the main wing, and the vanes of the auxiliary blade height H 2 is lower than the blade height H 1 of the main wing The air-conditioning fan impeller thus configured is provided.

そして、この構成によって、補助翼３の前縁１２を半径方向に対して回転方向にα度前傾させた直線にしていることで、補助翼３が斜めに空気を切るので、補助翼３の前縁１２が空気を切る時間のタイミングがずれるので、補助翼３の空力仕事による騒音が小さくなり、羽根車１全体として、更に、低騒音化を図れるものである。 With this configuration, since the leading edge 12 of the auxiliary wing 3 is a straight line inclined forward by α degrees in the rotational direction with respect to the radial direction , the auxiliary wing 3 cuts air obliquely. Since the timing of the time at which the leading edge 12 cuts the air is shifted, the noise due to the aerodynamic work of the auxiliary wing 3 is reduced, and the impeller 1 as a whole can be further reduced in noise.

（実施例３）
本発明の第３の実施例を、図１１・１２を用いて、説明する。 (Example 3 )
A third embodiment of the present invention will be described with reference to FIGS.

図１１は、本発明の第３の実施例の空調用送風機羽根車の平面図。図１２は、本発明の第３の実施例の空調用送風機羽根車の子午面図である。 FIG. 11 is a plan view of a blower impeller for air conditioning according to a third embodiment of the present invention. FIG. 12 is a meridional view of a blower impeller for air conditioning according to a third embodiment of the present invention.

図１１，１２において、翼枚数が２枚からなる主翼２を設け、主翼２の外周側弦長がハブ側弦長より長く、主翼２の前縁５を半径方向の直線とし、主翼２の間に翼枚数が全体として２枚からなる補助翼３を設け、補助翼３は外周側弦長がハブ側弦長より長くし、補助翼３の前縁１３を半径方向に対して回転方向に前傾させた螺旋曲線にて構成し、補助翼３の半径方向長さＬ２が主翼の半径方向長さＬ１より短く、且つ、補助翼の羽根高さＨ２が
前記主翼の羽根高さＨ１より低く構成した空調用送風機羽根車を提供するものである。 11 and 12 , a main wing 2 having two blades is provided, the chord length on the outer peripheral side of the main wing 2 is longer than the chord length on the hub side, and the leading edge 5 of the main wing 2 is a radial straight line. The auxiliary wing 3 having two blades as a whole is provided on the outer wing 3. The auxiliary wing 3 has an outer chord length longer than the hub chord length, and the front edge 13 of the auxiliary wing 3 is moved forward in the rotational direction with respect to the radial direction. It is constituted by an inclined spiral curve, the radial length L 2 of the auxiliary wing 3 is shorter than the radial length L 1 of the main wing, and the blade height H 2 of the auxiliary wing is the blade height H of the main wing. An air conditioner blower impeller configured lower than 1 is provided.

そして、この構成によって、補助翼３の前縁１３を回転方向に前傾させた螺旋曲線にしているので、補助翼３が斜めに空気を切るので、補助翼３の前縁１３が空気を切る時間のタイミングがずれるので、補助翼３の空力仕事による騒音が小さくなり、羽根車全体として、更に、低騒音化を図れるものである。   And by this structure, since the front edge 13 of the auxiliary wing 3 has a spiral curve that is inclined forward in the rotational direction, the auxiliary wing 3 cuts air diagonally, so the front edge 13 of the auxiliary wing 3 cuts air. Since the timing of the time is shifted, the noise due to the aerodynamic work of the auxiliary blade 3 is reduced, and the entire impeller can be further reduced in noise.

（参考例３）
本発明に関する第３の参考例を、図１３・１４を用いて、説明する。 ( Reference Example 3 )
A third reference example relating to the present invention will be described with reference to FIGS.

図１３は、本発明に関する第３の参考例の空調用送風機羽根車の平面図。図１４は、本発明に関する第３の参考例の空調用送風機羽根車の子午面図である。 FIG. 13 is a plan view of an air-conditioning fan impeller of a third reference example relating to the present invention. FIG. 14 is a meridional view of an air-conditioning fan impeller of a third reference example relating to the present invention.

図１３に於いて、略円錐台状のハブ１６に、複数枚の翼を設けてなる斜流ファン２０において、翼枚数が２枚からなる主翼１４を設け、主翼１４の外周側弦長がハブ側弦長より長く、主翼１４の間に翼枚数が全体として２枚からなる略扇状の補助翼１５を設け、補助翼１５の半径方向長さL2が主翼の半径方向長さL1より短く、且つ、補助翼の羽根高さH2が主翼の羽根高さH1より低く構成した空調用送風機羽根車２０を提供するものである。１７は前縁であり、１８は後縁であり、１９はチップ部である。 In FIG. 13, in a mixed flow fan 20 in which a plurality of blades are provided on a substantially truncated cone-shaped hub 16, a main blade 14 having two blades is provided, and the outer chord length of the main blade 14 is the hub. A substantially fan-shaped auxiliary wing 15 having two blades as a whole is provided between the main wings 14 and is longer than the side chord length, and the radial length L 2 of the auxiliary wing 15 is shorter than the radial length L 1 of the main wing. and one in which the blades of the auxiliary blade height H 2 is provided an air conditioning blower impeller 20 configured lower than the blade height H 1 of the main wing. 17 is a leading edge, 18 is a trailing edge, and 19 is a tip portion.

そして、この構成によって、主翼１４の枚数が２枚であるので、主に空力性能に寄与する翼面積の投入量が適正であるので、流体摩擦が少なく、ファン効率が高い。また、２枚の主翼１４のみでは、羽根車２０の回転騒音が乱流騒音より非常に高く、とても耳障りである。翼枚数ｚと回転数Nｒｐｍとすると、主翼１４の間に設けられた補助翼１５も空力仕事の寄与するので、全体として、翼枚数は４枚と言え、それぞれに空力仕事をするので、空力仕事が分散させるので、翼１枚当たりの翼面上の圧力変動のレベルが小さくなり、回転騒音Nz音のレベルは、乱流騒音のレベルより低く、聴感も良好である。補助翼１５の半径方向長さL2が主翼１４の半径方向長さL1より短く、且つ、補助翼１５の羽根高さH2が主翼１４の羽根高さH1より低いので、主翼１４から発生する翼端渦に補助翼１５が、干渉することがなく、羽根車２０としての騒音も低くできる。さらに、斜流ファンであるので、プロペラファンと比較して、遠心力場による圧力上昇があるので、静圧も高くすることができるものである。 With this configuration, since the number of the main wings 14 is two, the amount of the wing area that mainly contributes to the aerodynamic performance is appropriate, so the fluid friction is small and the fan efficiency is high. Moreover, with only two main wings 14, the rotational noise of the impeller 20 is much higher than the turbulent noise, which is very disturbing. If the number of blades z and the number of revolutions Nrpm are set, the auxiliary blade 15 provided between the main blades 14 also contributes to aerodynamic work, so the number of blades as a whole can be said to be four, and each aerodynamic work. Therefore, the level of pressure fluctuation on the blade surface per blade is reduced, the level of the rotational noise Nz sound is lower than the level of turbulent noise, and the audibility is also good. Since the radial length L 2 of the auxiliary wing 15 is shorter than the radial length L 1 of the main wing 14 and the blade height H 2 of the auxiliary wing 15 is lower than the blade height H 1 of the main wing 14, The auxiliary blade 15 does not interfere with the generated blade tip vortex, and the noise of the impeller 20 can be reduced. Furthermore, since it is a mixed flow fan, compared with a propeller fan, since there exists a pressure rise by a centrifugal force field, a static pressure can also be made high.

本発明に関する第１の参考例の空調用送風機羽根車の平面図The top view of the air blower impeller of the 1st reference example regarding this invention 本発明に関する第１の参考例の空調用送風機羽根車の子午面図The meridional view of the air blower impeller of the first reference example relating to the present invention 本発明に関する第１の参考例の空調用送風機羽根車の翼端渦の状況を示した模式図The schematic diagram which showed the condition of the tip vortex of the air-conditioning fan impeller of the 1st reference example regarding this invention 本発明に関する第１の参考例の空調用送風機羽根車の動作状況を示した模式図The schematic diagram which showed the operation condition of the air blower impeller of the 1st reference example regarding this invention 本発明に関する第２の参考例の空調用送風機羽根車の平面図The top view of the air blower impeller of the 2nd reference example regarding this invention 本発明に関する第２の参考例の空調用送風機羽根車の子午面図The meridional view of the air blower impeller of the second reference example related to the present invention 本発明の第１の実施例の空調用送風機羽根車の平面図The top view of the fan impeller for an air conditioning of 1st Example of this invention 本発明の第１の実施例の空調用送風機羽根車の子午面図The meridional view of the air-conditioning fan impeller of the first embodiment of the present invention 本発明の第２の実施例の空調用送風機羽根車の平面図The top view of the air blower impeller of the 2nd Example of this invention 本発明の第２の実施例の空調用送風機羽根車の子午面図The meridional view of the air blower impeller of the second embodiment of the present invention 本発明の第３の実施例の空調用送風機羽根車の平面図The top view of the air blower impeller of the 3rd Example of this invention 本発明の第３の実施例の空調用送風機羽根車の子午面図The meridional view of the air blower impeller of the third embodiment of the present invention 本発明に関する第３の参考例の空調用送風機羽根車の平面図The top view of the air blower impeller of the 3rd reference example regarding this invention 本発明に関する第３の参考例の空調用送風機羽根車の子午面図The meridional view of the air blower impeller of the third reference example related to the present invention 従来の実施例を示す図The figure which shows the conventional Example

符号の説明Explanation of symbols

１ 空調用送風機羽根車
２ 主翼
３ 補助翼
４ ハブ
５ 前縁
６ 後縁
７ チップ部
８ モ−タ
９ オリフィス
１０ 三角状の翼
１１ 前縁
１２ 補助翼の前縁
１３ 補助翼の前縁
１４ 斜流ファンの主翼
１５ 斜流ファンの補助翼
１６ 略円錐台状のハブ
１７ 斜流ファンの前縁
１８ 斜流ファンの後縁
１９ 斜流ファンのチップ部
２０ 斜流ファンの羽根車 DESCRIPTION OF SYMBOLS 1 Air-conditioning fan impeller 2 Main wing 3 Auxiliary wing 4 Hub 5 Front edge 6 Rear edge 7 Tip part 8 Motor 9 Orifice 10 Triangular blade 11 Front edge 12 Front edge of auxiliary wing 13 Front edge of auxiliary wing 14 Inclination The main wing of the flow fan 15 The auxiliary wing of the mixed flow fan 16 The substantially frustoconical hub 17 The leading edge of the mixed flow fan 18 The trailing edge of the mixed flow fan 19 The tip portion of the mixed flow fan 20 The impeller of the mixed flow fan

Claims (4)

円筒状のハブに、複数枚の翼を設けてなるプロペラファンにおいて、主翼を設け、前記主翼は外周側弦長がハブ側弦長より長く、前記主翼の前縁を半径方向に対して回転方向に前傾した螺旋曲線とし、前記主翼の間に補助翼を設け、前記補助翼は外周側弦長がハブ側弦長より長く、前記補助翼の前縁を半径方向の直線とし、前記補助翼の半径方向長さが前記主翼の半径方向長さより短く、且つ、前記補助翼の羽根高さが前記主翼の羽根高さより低くしたことを特徴とする送風機羽根車。 In a propeller fan having a plurality of blades provided on a cylindrical hub, a main wing is provided, and the main wing has an outer chord length longer than the hub chord length, and the leading edge of the main wing rotates in the radial direction. An auxiliary wing provided between the main wings, the auxiliary wing has an outer chord length longer than a hub chord length, a front edge of the auxiliary wing is a straight straight line, and the auxiliary wing The blower impeller is characterized in that the radial length of the auxiliary wing is shorter than the radial length of the main wing, and the blade height of the auxiliary wing is lower than the blade height of the main wing. 円筒状のハブに、複数枚の翼を設けてなるプロペラファンにおいて、主翼を設け、前記主翼は外周側弦長がハブ側弦長より長く、前記主翼の前縁を半径方向の直線とし、前記主翼の間に補助翼を設け、前記補助翼は外周側弦長がハブ側弦長より長く、前記補助翼の前縁を半径方向に対して回転方向に前傾した直線とし、前記補助翼の半径方向長さが前記主翼の半径方向長さより短く、且つ、前記補助翼の羽根高さが前記主翼の羽根高さより低くしたことを特徴とする送風機羽根車。In a propeller fan in which a plurality of blades are provided on a cylindrical hub, a main wing is provided, and the main wing has an outer chord length longer than a hub chord length, and a leading edge of the main wing is a straight straight line in the radial direction, An auxiliary wing is provided between the main wings, and the auxiliary wing has an outer chord length longer than the hub chord length, and the front edge of the auxiliary wing is a straight line inclined forward in the rotation direction with respect to the radial direction. A blower impeller characterized in that a radial length is shorter than a radial length of the main wing, and a blade height of the auxiliary wing is lower than a blade height of the main wing. 円筒状のハブに、複数枚の翼を設けてなるプロペラファンにおいて、主翼を設け、前記主翼は外周側弦長がハブ側弦長より長く、前記主翼の前縁を半径方向の直線とし、前記主翼の間に補助翼を設け、前記補助翼は外周側弦長がハブ側弦長より長く、前記補助翼の前縁を半径方向に対して回転方向に前傾した螺旋曲線とし、前記補助翼の半径方向長さが前記主翼の半径方向長さより短く、且つ、前記補助翼の羽根高さが前記主翼の羽根高さより低くしたことを特徴とする送風機羽根車。In a propeller fan in which a plurality of blades are provided on a cylindrical hub, a main wing is provided, and the main wing has an outer chord length longer than a hub chord length, and a leading edge of the main wing is a straight straight line in the radial direction, An auxiliary wing is provided between the main wings, and the auxiliary wing has a longer outer chord length than a hub chord length, and the front wing of the auxiliary wing has a spiral curve inclined forward in a rotational direction with respect to a radial direction. The blower impeller is characterized in that the radial length of the auxiliary wing is shorter than the radial length of the main wing, and the blade height of the auxiliary wing is lower than the blade height of the main wing. 前記主翼の枚数を２枚としたことを特徴とする請求項１〜３いずれか記載の送風機羽根車。 The blower impeller according to any one of claims 1 to 3, wherein the number of the main wings is two.
JP2003287553A 2003-08-06 2003-08-06 Blower impeller Expired - Fee Related JP4492060B2 (en)

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JP4572617B2 (en) * 2004-07-30 2010-11-04 パナソニック株式会社 Blower impeller for air conditioning
JP4572633B2 (en) * 2004-09-08 2010-11-04 パナソニック株式会社 Blower impeller for air conditioning
JP4994406B2 (en) * 2009-03-17 2012-08-08 三菱電機株式会社 Axial fan
CN103032377A (en) * 2011-10-09 2013-04-10 珠海格力电器股份有限公司 Axial flow fan blade
JP5253554B2 (en) * 2011-10-26 2013-07-31 三菱電機株式会社 Outdoor fans for axial fans and air conditioners
JP2013249787A (en) * 2012-06-01 2013-12-12 Daikin Industries Ltd Propeller fan
WO2023080739A1 (en) * 2021-11-08 2023-05-11 주식회사 아모텍 Noise reduction-type impeller

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