JP2004027870A - Multiblade impeller and manufacturing method of the multiblade impeller - Google Patents

Multiblade impeller and manufacturing method of the multiblade impeller Download PDF

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Publication number
JP2004027870A
JP2004027870A JP2002181494A JP2002181494A JP2004027870A JP 2004027870 A JP2004027870 A JP 2004027870A JP 2002181494 A JP2002181494 A JP 2002181494A JP 2002181494 A JP2002181494 A JP 2002181494A JP 2004027870 A JP2004027870 A JP 2004027870A
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Prior art keywords
fitting structure
blade
fitting
reinforcing ring
ring
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JP2002181494A
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JP4052030B2 (en
Inventor
▲高▼田 泰成
Yasunari Takada
Kiminobu Shionoiri
塩野入 公宣
Takashi Tsubouchi
坪内 剛史
Satoshi Fukatsu
深津 諭
Yoshimi Iwamura
岩村 義巳
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a multiblade impeller wherein an expensive cost is not required and variations in characteristics is small, and its manufacturing method. <P>SOLUTION: The multiblade impeller has ring-shaped metallic reinforcing rings 1 at both ends. A large number of metallic blades 2 are provided between the reinforcing ring 1 so as to line up in a circumferential direction, and a circular platy main plate 3 is equipped to an inner peripheral portion of each blade 2. A dovetail groove 5 is provided on each reinforcing ring 1 in a circumferential direction. The large number of blades 2 having dovetail shaped projecting portions 6 structured by extruding metallic material at first ends, is installed to the dovetail groove 5 by fitting the dovetail shaped projecting portions 6 to the dove tail groove 5. The reinforcing ring is composed of an inner peripheral side ring and an outer peripheral side ring, and the blades are respectively fitted and installed to that. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、低融点金属のアルミニウムやマグネシウム合金によって構成される遠心ファンや横断流ファンに用いられる多翼羽根車及びその製造方法に関するものである。
【0002】
【従来の技術】
遠心ファンや横断流ファンの主体となる多翼羽根車について、大風量形のものでは強度上、全体が金属材料で構成されている。この種の羽根径の大きな多翼羽根車は、多数の翼を両側において補強リングにカシメ付けて製造されているが、製造に手間がかかりコストも高くついている。これに対して、例えば、特開2001―193689号公報には、図12に示すような内周に多数の翼20を軸方向に備えたアルミニウムやマグネシウム合金のような低融点金属を押出し成形した円筒体21から、多翼羽根車を製造する技術が示されている。これは、押出し成形で得られた円筒体21を、所定の長さに切断した後、両端の補強リング部22を残して翼部分の外周肉部23を、切削加工して各翼を呈出させ、モーターの回転軸に連結する主板を結合するものである。こうして作られた多翼羽根車は、一体構造のため回転バランスも良く、騒音も低い。
【0003】
【発明が解決しようとする課題】
上記した従来の多翼羽根車の製造方法において、羽根径の大きな多翼羽根車については、円筒体21を押出し成形する成形機が非常に大型になるうえ、金型の製作も困難である。また、強度上、肉厚にした円筒体21の大半を切削除去することになり、多量の廃材ができ、コストが高騰するといった問題点がある。一方で、従前から行われている翼の補強リングへのカシメ付けによる仕方では、製造に手間がかかり、騒音等の特性にばらつきが出来易いといった問題点がある。
【0004】
本発明は、係る従来の問題点を解決するためになされたものであって、その課題とするところは、コストがかからず、特性のばらつきの少ない多翼羽根車を開発することであり、コストのかからない多翼羽根車の製造方法を開発することである。
【0005】
【課題を解決するための手段】
前記課題を達成するために請求項1の発明は、両端に金属製のリング状の補強リングを有し、補強リング間に多数の金属製の翼が周方向に並んで設けられ、それらの各翼の内周部にわたって円形板状の主板を装着した多翼羽根車について、、その各補強リングに嵌め構造を周方向に設け、この嵌め構造に金属材を押出し成形して構成した嵌込み構造を一端に有する多数の翼を、嵌め構造への嵌込み構造の嵌め合わせにより装着する手段を採用する。
【0006】
前記課題を達成するために請求項2の発明は、請求項1に係る前記手段における補強リングの端部に嵌め構造を設ける手段を採用する。
【0007】
前記課題を達成するために請求項3の発明は、請求項1又は請求項2のいずれかに係る前記手段における補強リングの嵌め構造を、穴で構成する手段を採用する。
【0008】
前記課題を達成するために請求項4の発明は、請求項1又は請求項2のいずれかに係る前記手段における補強リングの嵌め構造を、溝で構成する手段を採用する。
【0009】
前記課題を達成するために請求項5の発明は、請求項4に係る前記手段における補強リングの内周端部に嵌め構造の溝を設ける手段を採用する。
【0010】
前記課題を達成するために請求項6の発明は、請求項4に係る前記手段における補強リングの外周端部に嵌め構造の溝を設ける手段を採用する。
【0011】
前記課題を達成するために請求項7の発明は、両端に金属製のリング状の補強リングを有し、補強リング間に多数の金属製の翼が周方向に並んで設けられ、それらの各翼の内周部にわたって円形板状の主板を装着した多翼羽根車について、、その補強リングを内周側リングと外周側リングの二個で構成し、それぞれに嵌め構造を周方向に設け、この嵌め構造に金属材を押出し成形して構成した嵌込み構造を両端縁に有する多数の翼を、嵌め構造への嵌込み構造の嵌め合わせにより装着する手段を採用する。
【0012】
前記課題を達成するために請求項8の発明は、請求項1〜請求項7までのいずれかに係る前記手段における補強リングの嵌め構造と、各翼の嵌込み構造とを圧入により固定する手段を採用する。
【0013】
前記課題を達成するために請求項9の発明は、請求項1〜請求項7までのいずれかに係る前記手段における補強リングの嵌め構造と、各翼の嵌込み構造とを嵌め合わせ、カシメ付けにより固定する手段を採用する。
【0014】
前記課題を達成するために請求項10の発明は、請求項1〜請求項7までのいずれかに係る前記手段における補強リングの嵌め構造と、各翼の嵌込み構造とを嵌め合わせ、焼き嵌めにより固定する手段を採用する。
【0015】
前記課題を達成するために請求項11の発明は、請求項1〜請求項7までのいずれかに係る前記手段における補強リングの嵌め構造と、各翼の嵌込み構造とを嵌め合わせ、冷やし嵌めにより固定する手段を採用する。
【0016】
前記課題を達成するために請求項12の発明は、請求項1〜請求項7までのいずれかに係る前記手段における補強リングの嵌め構造と、各翼の嵌込み構造とを嵌め合わせ、溶接して固定する手段を採用する。
【0017】
前記課題を達成するために請求項13の発明は、請求項1〜請求項7までのいずれかに係る前記手段における補強リングの嵌め構造と、各翼の嵌込み構造とを嵌め合わせ、接着して固定する手段を採用する。
【0018】
前記課題を達成するために請求項14の発明は、両端に金属製のリング状の補強リングを有し、この補強リング間に多数の金属製の翼が周方向に並んで設けられ、それらの各翼の内周部にわたって円形板状の主板を装着した多翼羽根車について、その各補強リングに嵌め構造を周方向に設け、この嵌め構造に金属材を押出し成形して構成した嵌込み構造を一端に有する多数の翼を、嵌め構造へ嵌込み構造を嵌め合わせて装着する手段を採用する。
【0019】
【発明の実施の形態】
実施の形態1.
本実施の形態は、遠心ファンや横断流ファンのような送風機に用いられる図1や図2に示す多翼羽根車に関するものである。この多翼羽根車は、低融点金属のアルミニウムやマグネシウム合金によって構成した両端のリング状の補強リング1と、補強リング1間に周方向に装架した多数の湾曲板形状の翼2とで構成されている。各翼2の内周部には、各翼2の内周端縁にわたる円形板状の主板3がカシメ付けにより装着され、主板3の中心に設けられたボス部4においてモーターの回転軸に装着される。
【0020】
補強リング1は、図3に示すようにアルミニウムやマグネシウム合金を円筒形に押出し成形したものを所定の長さに切断して構成される。補強リング1の内端縁には、嵌め構造としてのアリ溝5が周方向に等間隔に設けてあり、このアリ溝5に、図4に示すようにアルミニウムやマグネシウム合金を押出し成形して作られた一端に嵌込み構造としての鳩尾状突部6を設けた湾曲板形状の翼2が、アリ溝5への鳩尾状突部6への圧入により装架されている。各翼2は、図4に示すように長尺の押出し成形物6Aを所定長に裁断し、補強リング1のアリ溝5に鳩尾状突部6を図5及び図6に示すように嵌め合わせて補強リング1間に周方向に並べて装架させ、補強リング1から外れる無効部分の鳩尾状突部6を切削除去して翼2として成形される。
【0021】
この多翼羽根車の作り方は、翼一体の円筒体を、削出しによって翼部分を呈出させる仕方を採らず、補強リング1と、押出し成形による翼2を嵌め合いにより組付け、翼2の送風性能に影響する余分な翼2の嵌込み構造のみを切削除去するものであるため、廃材が極めて少なく、大きな羽根径の多翼羽根車も、小さな羽根径の多翼羽根車でも効率良く低コストで製造することができ、特性のばらつきも少ない多翼羽根車が得られる。
【0022】
補強リング1については、その嵌め構造のアリ溝5を図7に示すように外側端に設け、翼2の内縁に嵌込み構造としての鳩尾状突部6を設けてもよい。また、補強リング1の嵌め構造を図8に示すように角穴7として、押出し成形による翼2の両端部に切削加工により角穴7に嵌まる嵌込み構造を設けて、補強リング1と翼2とを圧入固定してもよい。補強リング1と翼2との連結については、圧入の他にもカシメ付けや、焼き嵌め、冷やし嵌め、溶接、接着による手段で固定することもできる。
【0023】
実施の形態2.
図9と図10によって示す本実施の形態は、実施の形態1で示した多翼羽根車に関し、その補強リング1の嵌め構造と翼2の嵌込み構造とに工夫を講じ、後加工による切削工程を不要にしたもので、これに係る構成以外は、実施の形態1のものと同じである。従って、実施の形態1のものと同じ部分については、実施の形態1のものと同じ符号を用い、それらについての説明は省略する。
【0024】
本実施の形態では、補強リング1の嵌め構造を図9に示すような内面に対向状に突起8を設けた溝9とし、翼2の嵌込み構造は翼2の一端部10として、その一端部10に突起8に係合する溝11を設けている。各翼2の一端部10と溝11を各補強リング1の溝9と突起8に嵌合して、主板3を装着することによって多翼羽根車が製造される。この方法によれば翼2に送風性能を阻害する構造が無いので翼2の組立て後に切削加工する必要がなく、廃材もでず低コストで多翼羽根車を得ることができる。
【0025】
実施の形態3.
図11によって示す本実施の形態は、実施の形態1や実施の形態2で示した多翼羽根車に関し、補強リング1を翼の外周側リングと内周側リングとで構成し、羽根径の大きな多翼羽根車に対応できるようにしたものである。基本的な構成は、実施の形態1や実施の形態2のものと同じである。従って、実施の形態1や実施の形態2のものと同じ部分については、それらのものと同じ符号を用い、その説明は省略する。
【0026】
本実施の形態における翼2の外周側リング12については、実施の形態1や実施の形態2で示した補強リング1の構成がそのまま適用される。内周側リング13については外周に翼2の内端部を嵌合する嵌込み構造としての溝14を周方向に並んで設けている。この溝14に各翼2の内端部を嵌合させて、翼2の内周と外周を内周側リング13と外周側リング12とで支持することによって、強度の高い低コストの多翼羽根車を得ることができる。なお、主板3の装着は、片方の内周側リング13の装着前に行われる。
【0027】
【発明の効果】
請求項1の発明によれば、製造において廃材が少なくコストのかからない、特性のばらつきも少ない多翼羽根車が得られる。
【0028】
請求項2の発明によれば、製造において廃材が少なくコストのかからない、特性のばらつきも少ない多翼羽根車が得られる。
【0029】
請求項3の発明によれば、製造において廃材が少なくコストのかからない、特性のばらつきも少ない多翼羽根車が得られる。
【0030】
請求項4の発明によれば、製造において廃材が少なくコストのかからない、特性のばらつきも少ない多翼羽根車が得られる。
【0031】
請求項5の発明によれば、製造において廃材が少なくコストのかからない、特性のばらつきも少ない多翼羽根車が得られる。
【0032】
請求項6の発明によれば、製造において廃材が少なくコストのかからない、特性のばらつきも少ない多翼羽根車が得られる。
【0033】
請求項7の発明によれば、製造において廃材が少なくコストのかからない、強度の高い多翼羽根車が得られる。
【0034】
請求項8の発明によれば、製造において廃材が少なくコストのかからない、特性のばらつきも少ない多翼羽根車が得られる。
【0035】
請求項9の発明によれば、製造において廃材が少なくコストのかからない、特性のばらつきも少ない多翼羽根車が得られる。
【0036】
請求項10の発明によれば、製造において廃材が少なくコストのかからない、特性のばらつきも少ない多翼羽根車が得られる。
【0037】
請求項11の発明によれば、製造において廃材が少なくコストのかからない、特性のばらつきも少ない多翼羽根車が得られる。
【0038】
請求項12の発明によれば、製造において廃材が少なくコストのかからない、特性のばらつきも少ない多翼羽根車が得られる。
【0039】
請求項13の発明によれば、製造において廃材が少なくコストのかからない、特性のばらつきも少ない多翼羽根車が得られる。
【0040】
請求項14の発明によれば、廃材が少なくコストをかけずに多翼羽根車を製造することができる。
【図面の簡単な説明】
【図1】実施の形態1の多翼羽根車を示す側面図である。
【図2】実施の形態1の多翼羽根車を示す正面図である。
【図3】実施の形態1の多翼羽根車の補強リングを示す斜視図である。
【図4】実施の形態1の多翼羽根車の翼の製造過程を示す斜視図である。
【図5】実施の形態1の多翼羽根車の補強リングと翼の組付け過程を示す拡大部分側面図である。
【図6】実施の形態1の多翼羽根車の補強リングと翼の組付け状態を示す拡大部分側面図である。
【図7】実施の形態1の他の多翼羽根車示す側面図である。
【図8】実施の形態1の他の多翼羽根車の側面図である。
【図9】実施の形態2の多翼羽根車の補強リングと翼の組付け過程を示す拡大部分側面図である。
【図10】実施の形態2の多翼羽根車の補強リングと翼の組付け状態を示す拡大部分側面図である。
【図11】実施の形態3の多翼羽根車の側面図である。
【図12】従来の多翼羽根車の製造方法を示す斜視図である。
【符号の説明】
1 補強リング、 2 翼、 3 主板、 5 アリ溝、 6 鳩尾状突部、7 角穴、 8 突起、 9 溝、 10 一端部、 11 溝、 12 外周側リング、 13 内周側リング、 14 溝。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a multi-blade impeller used for a centrifugal fan or a cross-flow fan made of aluminum or magnesium alloy of a low melting point metal and a method for manufacturing the same.
[0002]
[Prior art]
As for multi-blade impellers, which are the main components of centrifugal fans and cross-flow fans, the large airflow type is entirely made of a metal material in terms of strength. This type of multi-blade impeller having a large blade diameter is manufactured by caulking a large number of blades to the reinforcing ring on both sides. However, the manufacturing takes time and costs are high. On the other hand, for example, in Japanese Patent Application Laid-Open No. 2001-193898, a low melting point metal such as aluminum or magnesium alloy having a large number of blades 20 in the axial direction on the inner periphery as shown in FIG. A technique for manufacturing a multiblade impeller from a cylindrical body 21 is shown. This is because the cylindrical body 21 obtained by extrusion molding is cut to a predetermined length, and then the outer peripheral meat portion 23 of the blade portion is cut to leave the reinforcing ring portions 22 at both ends to present each blade. The main plate connected to the rotating shaft of the motor is coupled. The multi-blade impeller made in this way has a good rotation balance and low noise due to its integral structure.
[0003]
[Problems to be solved by the invention]
In the conventional multi-blade impeller manufacturing method described above, for a multi-blade impeller having a large blade diameter, the molding machine for extruding the cylindrical body 21 becomes very large and it is difficult to manufacture a mold. In addition, in terms of strength, most of the thickened cylindrical body 21 is removed by cutting, resulting in a problem that a large amount of waste material is produced and the cost increases. On the other hand, the conventional method of caulking to the reinforcing ring of the wing has a problem that it takes time to manufacture, and characteristics such as noise are likely to vary.
[0004]
The present invention has been made in order to solve the conventional problems, and the problem is to develop a multi-blade impeller with less cost and less variation in characteristics. It is to develop a method for manufacturing a multi-blade impeller at low cost.
[0005]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the invention of claim 1 has metal ring-shaped reinforcing rings at both ends, and a large number of metal wings are provided side by side in the circumferential direction between the reinforcing rings. For multi-blade impellers equipped with a circular plate-shaped main plate over the inner peripheral part of the blade, a fitting structure is provided in each reinforcing ring in the circumferential direction, and a metal material is extruded into this fitting structure. A means for attaching a large number of wings at one end by fitting the fitting structure into the fitting structure is employed.
[0006]
In order to achieve the object, the invention of claim 2 employs means for providing a fitting structure at the end of the reinforcing ring in the means according to claim 1.
[0007]
In order to achieve the above object, a third aspect of the present invention employs means for forming a reinforcing ring fitting structure in the means according to either of the first or second aspects with a hole.
[0008]
In order to achieve the above object, a fourth aspect of the present invention employs a means for configuring the fitting structure of the reinforcing ring in the means according to either the first or second aspect with a groove.
[0009]
In order to achieve the above object, the invention of claim 5 employs means for providing a groove of a fitting structure at the inner peripheral end of the reinforcing ring in the means according to claim 4.
[0010]
In order to achieve the above object, the invention of claim 6 employs means for providing a groove of a fitting structure at the outer peripheral end of the reinforcing ring in the means according to claim 4.
[0011]
In order to achieve the above-mentioned object, the invention of claim 7 has a metal ring-shaped reinforcing ring at both ends, and a large number of metal wings are provided side by side in the circumferential direction between the reinforcing rings. For the multi-blade impeller mounted with a circular plate-shaped main plate over the inner peripheral part of the wing, the reinforcing ring is composed of two pieces, the inner peripheral side ring and the outer peripheral side ring, and a fitting structure is provided in the circumferential direction respectively. A means for attaching a large number of blades having fitting structures formed by extruding a metal material to the fitting structure at both end edges by fitting the fitting structure to the fitting structure is adopted.
[0012]
In order to achieve the above object, the invention according to claim 8 is a means for fixing the fitting structure of the reinforcing ring and the fitting structure of each blade by press-fitting in the means according to any one of claims 1 to 7. Is adopted.
[0013]
In order to achieve the above object, a ninth aspect of the invention relates to a fitting structure of a reinforcing ring and a fitting structure of each wing in the means according to any one of the first to seventh aspects, and caulking. The means to fix by is adopted.
[0014]
In order to achieve the above object, a tenth aspect of the present invention is such that the fitting structure of the reinforcing ring and the fitting structure of each wing in the means according to any one of the first to seventh aspects are fitted and shrink-fitted. The means to fix by is adopted.
[0015]
In order to achieve the above object, the invention of claim 11 is a cold fitting by fitting the reinforcing ring fitting structure and the wing fitting structure in the means according to any one of claims 1 to 7. The means to fix by is adopted.
[0016]
In order to achieve the above object, a twelfth aspect of the present invention is such that the fitting structure of the reinforcing ring and the fitting structure of each wing in the means according to any one of the first to seventh aspects are fitted and welded. Adopting means to fix.
[0017]
In order to achieve the above object, a thirteenth aspect of the present invention is to fit and bond the reinforcing ring fitting structure and the wing fitting structure in the means according to any one of the first to seventh aspects. Adopting means to fix.
[0018]
In order to achieve the above-mentioned object, the invention of claim 14 has metal ring-shaped reinforcing rings at both ends, and a large number of metal wings are provided side by side in the circumferential direction between the reinforcing rings. A multi-blade impeller equipped with a circular plate-shaped main plate over the inner peripheral part of each blade is provided with a fitting structure in each reinforcing ring in the circumferential direction, and a fitting structure formed by extruding a metal material into this fitting structure A means for fitting a plurality of blades having one end to the fitting structure by fitting the fitting structure into the fitting structure is adopted.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
This embodiment relates to the multiblade impeller shown in FIGS. 1 and 2 that is used in a blower such as a centrifugal fan or a cross flow fan. This multi-blade impeller is composed of a ring-shaped reinforcing ring 1 at both ends made of a low-melting-point metal such as aluminum or magnesium alloy, and a large number of curved plate-shaped blades 2 mounted in the circumferential direction between the reinforcing rings 1. Has been. A circular plate-shaped main plate 3 that extends over the inner peripheral edge of each blade 2 is attached to the inner peripheral portion of each blade 2 by caulking, and is attached to the rotating shaft of the motor at a boss portion 4 provided at the center of the main plate 3. Is done.
[0020]
As shown in FIG. 3, the reinforcing ring 1 is formed by cutting aluminum and a magnesium alloy into a predetermined length after being extruded into a cylindrical shape. On the inner edge of the reinforcing ring 1, dovetail grooves 5 as fitting structures are provided at equal intervals in the circumferential direction, and aluminum or magnesium alloy is extruded into the dovetail grooves 5 as shown in FIG. A curved plate-shaped wing 2 provided with a dovetail-like protrusion 6 as a fitting structure at one end is mounted by press-fitting the dovetail-like protrusion 6 into the dovetail groove 5. Each blade 2 cuts a long extruded product 6A into a predetermined length as shown in FIG. 4, and fits the dovetail-shaped protrusion 6 into the dovetail groove 5 of the reinforcing ring 1 as shown in FIGS. Then, the reinforcing rings 1 are arranged in the circumferential direction and mounted, and the dovetail-like protrusions 6 that are ineffective portions that are detached from the reinforcing rings 1 are cut and removed to form the blades 2.
[0021]
This multi-blade impeller is manufactured by fitting the reinforcing ring 1 and the wing 2 by extrusion molding into a cylindrical body integrated with the wing without cutting the wing portion by cutting. Only the extra blade 2 fitting structure that affects the air blowing performance is cut and removed, so there is very little waste material, and both the multi-blade impeller with a large blade diameter and the multi-blade impeller with a small blade diameter can be efficiently reduced. A multiblade impeller that can be manufactured at low cost and has little variation in characteristics is obtained.
[0022]
As for the reinforcing ring 1, dovetail-shaped protrusions 6 as fitting structures may be provided on the inner edge of the wing 2 as shown in FIG. Also, the fitting structure of the reinforcing ring 1 is formed as a square hole 7 as shown in FIG. 8, and an fitting structure that fits into the square hole 7 by cutting is provided at both ends of the blade 2 by extrusion molding. 2 may be press-fitted and fixed. About the connection of the reinforcement ring 1 and the wing | blade 2, it can also fix with the means by crimping, shrink fitting, cold fitting, welding, adhesion | attachment other than press fit.
[0023]
Embodiment 2. FIG.
The present embodiment shown in FIGS. 9 and 10 relates to the multi-blade impeller shown in the first embodiment, and devise the fitting structure of the reinforcing ring 1 and the fitting structure of the wing 2 to perform cutting by post-processing. The steps are not necessary, and the configuration other than the configuration is the same as that of the first embodiment. Therefore, the same parts as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and description thereof is omitted.
[0024]
In this embodiment, the fitting structure of the reinforcing ring 1 is the groove 9 provided with the protrusions 8 on the inner surface as shown in FIG. 9, and the fitting structure of the wing 2 is the one end portion 10 of the wing 2. A groove 11 that engages with the protrusion 8 is provided in the portion 10. A multiblade impeller is manufactured by fitting the main plate 3 by fitting one end 10 and the groove 11 of each blade 2 into the groove 9 and the protrusion 8 of each reinforcing ring 1. According to this method, since the blade 2 does not have a structure that impedes the air blowing performance, it is not necessary to perform cutting after the blade 2 is assembled, and no multi-blade impeller can be obtained at low cost without waste material.
[0025]
Embodiment 3 FIG.
The present embodiment shown in FIG. 11 relates to the multiblade impeller shown in the first embodiment or the second embodiment, and the reinforcing ring 1 is composed of an outer peripheral ring and an inner peripheral ring of the blade, It is designed to handle large multi-blade impellers. The basic configuration is the same as that of the first and second embodiments. Therefore, the same parts as those in the first embodiment and the second embodiment are denoted by the same reference numerals, and description thereof is omitted.
[0026]
The configuration of the reinforcing ring 1 shown in the first and second embodiments is applied as it is to the outer peripheral ring 12 of the blade 2 in the present embodiment. For the inner ring 13, grooves 14 serving as fitting structures for fitting the inner ends of the blades 2 are provided on the outer circumference side by side in the circumferential direction. By fitting the inner ends of the blades 2 into the grooves 14 and supporting the inner periphery and outer periphery of the blades 2 with the inner ring 13 and the outer ring 12, high strength and low cost multi blades are provided. An impeller can be obtained. The main plate 3 is mounted before the one inner ring 13 is mounted.
[0027]
【The invention's effect】
According to the first aspect of the present invention, a multi-blade impeller can be obtained which is less costly in production and less costly and has less variation in characteristics.
[0028]
According to the second aspect of the present invention, a multiblade impeller with little waste material in production and low cost and with little variation in characteristics can be obtained.
[0029]
According to the invention of claim 3, it is possible to obtain a multi-blade impeller with little waste material in manufacturing and less costly and with less variation in characteristics.
[0030]
According to the invention of claim 4, a multi-blade impeller with little waste material in production and less cost and less variation in characteristics can be obtained.
[0031]
According to the invention of claim 5, a multi-blade impeller with little waste material in production and less cost and less variation in characteristics can be obtained.
[0032]
According to the sixth aspect of the present invention, a multiblade impeller with little waste material in production and less cost and less variation in characteristics can be obtained.
[0033]
According to the invention of claim 7, a multi-blade impeller having high strength can be obtained which is less costly in production and less costly.
[0034]
According to the invention of claim 8, there can be obtained a multiblade impeller with little waste material in production and less costly and with less variation in characteristics.
[0035]
According to the ninth aspect of the present invention, a multiblade impeller with little waste material in production and less cost and less variation in characteristics can be obtained.
[0036]
According to the invention of claim 10, a multi-blade impeller with less waste material in production and less cost and less variation in characteristics can be obtained.
[0037]
According to the eleventh aspect of the present invention, a multiblade impeller with little waste material in production and less cost and less variation in characteristics can be obtained.
[0038]
According to the twelfth aspect of the present invention, a multi-blade impeller with little waste material in production and less cost and less variation in characteristics can be obtained.
[0039]
According to the thirteenth aspect of the present invention, a multi-blade impeller with little waste material in production and less cost and less variation in characteristics can be obtained.
[0040]
According to the invention of claim 14, the multiblade impeller can be manufactured with little waste material and without cost.
[Brief description of the drawings]
FIG. 1 is a side view showing a multiblade impeller according to a first embodiment.
FIG. 2 is a front view showing the multiblade impeller of the first embodiment.
FIG. 3 is a perspective view showing a reinforcing ring of the multi-blade impeller according to the first embodiment.
4 is a perspective view showing a manufacturing process of the blades of the multiblade impeller of Embodiment 1. FIG.
FIG. 5 is an enlarged partial side view showing a process of assembling the reinforcing ring and blades of the multiblade impeller according to the first embodiment.
6 is an enlarged partial side view showing an assembled state of a reinforcing ring and blades of the multiblade impeller according to Embodiment 1. FIG.
7 is a side view showing another multi-blade impeller according to the first embodiment. FIG.
FIG. 8 is a side view of another multi-blade impeller of the first embodiment.
FIG. 9 is an enlarged partial side view showing a process of assembling a reinforcing ring and blades of the multi-blade impeller according to the second embodiment.
FIG. 10 is an enlarged partial side view showing an assembled state of a reinforcing ring and blades of the multi-blade impeller according to the second embodiment.
FIG. 11 is a side view of the multi-blade impeller according to the third embodiment.
FIG. 12 is a perspective view showing a conventional method for manufacturing a multiblade impeller.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Reinforcement ring, 2 Wings, 3 Main plate, 5 Dovetail groove, 6 Dovetail protrusion, 7 Square hole, 8 Protrusion, 9 groove, 10 One end, 11 Groove, 12 Outer ring, 13 Inner ring, 14 Groove .

Claims (14)

両端に金属製のリング状の補強リングを有し、この補強リング間に多数の金属製の翼が周方向に並んで設けられ、それらの各翼の内周部にわたって円形板状の主板を装着した多翼羽根車について、その各補強リングに嵌め構造を周方向に設け、この嵌め構造に金属材を押出し成形して構成した嵌込み構造を一端に有する多数の翼を、前記嵌め構造への嵌込み構造の嵌め合わせにより装着して構成した多翼羽根車。There are metal ring-shaped reinforcement rings at both ends, and a large number of metal blades are arranged in the circumferential direction between the reinforcement rings, and a circular plate-shaped main plate is attached to the inner periphery of each blade. In the multi-blade impeller, a plurality of blades each having a fitting structure formed at one end by providing a fitting structure in each reinforcing ring in the circumferential direction and extruding a metal material into the fitting structure. A multi-blade impeller constructed by fitting with a fitting structure. 請求項1に記載の多翼羽根車であって、補強リングの端部に嵌め構造を設けた多翼羽根車。The multi-blade impeller according to claim 1, wherein a fitting structure is provided at an end of the reinforcing ring. 請求項1又は請求項2のいずれかに記載の多翼羽根車であって、補強リングの嵌め構造を穴で構成した多翼羽根車。The multi-blade impeller according to claim 1 or 2, wherein the fitting structure of the reinforcing ring is configured by a hole. 請求項1又は請求項2のいずれかに記載の多翼羽根車であって、補強リングの嵌め構造を溝で構成した多翼羽根車。The multi-blade impeller according to claim 1 or 2, wherein the reinforcing ring fitting structure is configured by a groove. 請求項4に記載の多翼羽根車であって、補強リングの内周端部に嵌め構造の溝を設けた多翼羽根車。The multi-blade impeller according to claim 4, wherein a groove having a fitting structure is provided at an inner peripheral end portion of the reinforcing ring. 請求項4に記載の多翼羽根車であって、補強リングの外周端部に嵌め構造の溝を設けた多翼羽根車。The multi-blade impeller according to claim 4, wherein a groove having a fitting structure is provided at an outer peripheral end portion of the reinforcing ring. 両端に金属製のリング状の補強リングを有し、この補強リング間に多数の金属製の翼が周方向に並んで設けられ、それらの各翼の内周部にわたって円形板状の主板を装着した多翼羽根車について、その補強リングを内周側リングと外周側リングの二個で構成し、それぞれに嵌め構造を周方向に設け、この嵌め構造に金属材を押出し成形して構成した嵌込み構造を両端縁に有する多数の翼を、前記嵌め構造への嵌込み構造の嵌め合わせにより装着した多翼羽根車。There are metal ring-shaped reinforcement rings at both ends, and a large number of metal blades are arranged in the circumferential direction between the reinforcement rings, and a circular plate-shaped main plate is attached to the inner periphery of each blade. The multi-blade impeller is composed of two reinforcing rings, an inner ring and an outer ring, each having a fitting structure in the circumferential direction, and a fitting formed by extruding a metal material into the fitting structure. A multi-blade impeller in which a large number of blades having an embedded structure at both end edges are mounted by fitting the inserted structure into the fitted structure. 請求項1〜請求項7までのいずれかに記載の多翼羽根車であって、補強リングの嵌め構造と、各翼の嵌込み構造とを圧入して固定した多翼羽根車。The multi-blade impeller according to any one of claims 1 to 7, wherein the fitting structure of the reinforcing ring and the fitting structure of each blade are press-fitted and fixed. 請求項1〜請求項7までのいずれかに記載の多翼羽根車であって、補強リングの嵌め構造と、各翼の嵌込み構造とを嵌め合わせ、かしめ付けにより固定する多翼羽根車。The multi-blade impeller according to any one of claims 1 to 7, wherein the fitting structure of the reinforcing ring and the fitting structure of each blade are fitted together and fixed by caulking. 請求項1〜請求項7までのいずれかに記載の多翼羽根車であって、補強リングの嵌め構造と、各翼の嵌込み構造とを嵌め合せ、焼き嵌めにより固定した多翼羽根車。The multi-blade impeller according to any one of claims 1 to 7, wherein the fitting structure of the reinforcing ring and the fitting structure of each blade are fitted and fixed by shrink fitting. 請求項1〜請求項7までのいずれかに記載の多翼羽根車であって、補強リングの嵌め構造と、各翼の嵌込み構造とを嵌め合わせ、冷やし嵌めにより固定した多翼羽根車。The multi-blade impeller according to any one of claims 1 to 7, wherein the fitting structure of the reinforcing ring and the fitting structure of each blade are fitted together and fixed by cold fitting. 請求項1〜請求項7までのいずれかに記載の多翼羽根車であって、補強リングの嵌め構造と、各翼の嵌込み構造とを嵌め合わせ、溶接して固定した多翼羽根車。The multi-blade impeller according to any one of claims 1 to 7, wherein the fitting structure of the reinforcing ring and the fitting structure of each wing are fitted and fixed by welding. 請求項1〜請求項7までのいずれかに記載の多翼羽根車であって、補強リングの嵌め構造と、各翼の嵌込み構造とを嵌め合わせ、接着して固定した多翼羽根車。The multiblade impeller according to any one of claims 1 to 7, wherein the fitting structure of the reinforcing ring and the fitting structure of each wing are fitted, bonded, and fixed. 両端に金属製のリング状の補強リングを有し、この補強リング間に多数の金属製の翼が周方向に並んで設けられ、それらの各翼の内周部にわたって円形板状の主板を装着した多翼羽根車について、その各補強リングに嵌め構造を周方向に設け、この嵌め構造に金属材を押出し成形して構成した嵌込み構造を一端に有する多数の翼を、前記嵌め構造へ嵌込み構造を嵌め合わせて装着する多翼羽根車の製造方法。There are metal ring-shaped reinforcement rings at both ends, and a large number of metal blades are arranged in the circumferential direction between the reinforcement rings, and a circular plate-shaped main plate is attached to the inner periphery of each blade. In the multi-blade impeller, a plurality of blades each having a fitting structure formed by extruding a metal material in each fitting ring and having a fitting structure formed at one end are fitted into the fitting structure. A method for manufacturing a multi-blade impeller to be fitted with a fitting structure.
JP2002181494A 2002-06-21 2002-06-21 Multi-blade impeller Expired - Lifetime JP4052030B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014038464A1 (en) * 2012-09-04 2014-03-13 ダイキン工業株式会社 Cross-flow fan
JP2014066256A (en) * 2014-01-24 2014-04-17 Daikin Ind Ltd Cross-flow fan
CN106032807A (en) * 2015-03-20 2016-10-19 讯凯国际股份有限公司 Fan impeller and manufacturing method thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014038464A1 (en) * 2012-09-04 2014-03-13 ダイキン工業株式会社 Cross-flow fan
JP2014047772A (en) * 2012-09-04 2014-03-17 Daikin Ind Ltd Cross flow fan
US9447790B2 (en) 2012-09-04 2016-09-20 Daikin Industries, Ltd. Cross-flow fan
JP2014066256A (en) * 2014-01-24 2014-04-17 Daikin Ind Ltd Cross-flow fan
CN106032807A (en) * 2015-03-20 2016-10-19 讯凯国际股份有限公司 Fan impeller and manufacturing method thereof
CN106032807B (en) * 2015-03-20 2019-03-15 讯凯国际股份有限公司 Blast fan and its manufacturing method
US10781822B2 (en) 2015-03-20 2020-09-22 Cooler Master Co., Ltd. Fan impeller with metallic blades and method for manufacturing the same

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