JP2003013887A - Impeller of multi-vane blower and multi-vane blower equipped with impeller - Google Patents
Impeller of multi-vane blower and multi-vane blower equipped with impellerInfo
- Publication number
- JP2003013887A JP2003013887A JP2001196179A JP2001196179A JP2003013887A JP 2003013887 A JP2003013887 A JP 2003013887A JP 2001196179 A JP2001196179 A JP 2001196179A JP 2001196179 A JP2001196179 A JP 2001196179A JP 2003013887 A JP2003013887 A JP 2003013887A
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- Japan
- Prior art keywords
- impeller
- blade
- main plate
- blower
- inter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】多翼送風機の羽根車及びそれ
を備えた多翼送風機、特に、主板から延びる複数の翼の
端部が環状の側板により結ばれた多翼送風機の羽根車及
びそれを備えた多翼送風機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The impeller of a multi-blade blower and a multi-blade blower having the same, and more particularly, the impeller of a multi-blade blower in which ends of a plurality of blades extending from a main plate are connected by annular side plates and the impeller. The present invention relates to a multi-blade blower equipped.
【0002】[0002]
【従来の技術】気体清浄機やエアコンなどの気体調和機
(以下、空調機という。)においては、送風を行うため
に、多翼送風機が用いられている。図1〜図3に、従来
例の多翼送風機を示す。ここで、図1は、従来例の多翼
送風機の側面図を示し、図2は、従来例の多翼送風機の
羽根車の斜視図を示し、図3は、従来例の多翼送風機の
羽根車の平面図を示している。2. Description of the Related Art In gas conditioners such as gas purifiers and air conditioners (hereinafter referred to as "air conditioners"), a multi-blade blower is used to blow air. 1 to 3 show a conventional multi-blade blower. Here, FIG. 1 shows a side view of a conventional multi-blade blower, FIG. 2 shows a perspective view of an impeller of a conventional multi-blade blower, and FIG. 3 shows blades of a conventional multi-blade blower. The top view of the car is shown.
【0003】多翼送風機10は、羽根車13、羽根車1
3を覆うケーシング11、羽根車13を回転するための
モータ14等から構成されている。羽根車13は、円板
状の主板31の外周縁に多数枚の翼33の一端が固定さ
れ、それらの翼33の他端が環状の側板32で結ばれて
いる。ケーシング11には、気体の吹出口11aと、ベ
ルマウス12により囲われる気体の吸込口11bとが形
成されている。吸込口11bは、羽根車13の側板32
に対向している。また、吹出口11aは、羽根車13の
回転軸O−Oに対して略直交する向きに気体を吹き出す
ように、吸込口11bに直交する方向に形成されてい
る。The multiblade blower 10 includes an impeller 13 and an impeller 1.
3, a casing 11 for covering 3 and a motor 14 for rotating the impeller 13 and the like. In the impeller 13, one end of a large number of blades 33 is fixed to the outer peripheral edge of a disk-shaped main plate 31, and the other ends of these blades 33 are connected by an annular side plate 32. The casing 11 is formed with a gas outlet 11 a and a gas inlet 11 b surrounded by the bell mouth 12. The suction port 11b is a side plate 32 of the impeller 13.
Is facing. Further, the outlet 11a is formed in a direction orthogonal to the suction port 11b so that the gas is blown out in a direction substantially orthogonal to the rotation axis OO of the impeller 13.
【0004】モータ14を回転して多翼送風機10を作
動させると、羽根車13が、ケーシング11に対して、
図3の回転方向Rの向きに回転する。これにより、羽根
車13の各翼33が内周側の空間から外周側の空間へと
気体を掻き出し、吸込口11bから羽根車13の内周側
の空間に気体が吸い込まれるとともに、羽根車13の外
周側に押し出された気体が吹出口11aを通って送出さ
れる。すなわち、多翼送風機10は、吸込口11bから
気体を吸い込み、吹出口11aから気体を送出する。When the multi-blade blower 10 is operated by rotating the motor 14, the impeller 13 moves with respect to the casing 11.
It rotates in the direction of rotation R in FIG. Thereby, each blade 33 of the impeller 13 scrapes out gas from the space on the inner peripheral side to the space on the outer peripheral side, and the gas is sucked into the space on the inner peripheral side of the impeller 13 from the suction port 11b, and at the same time, the impeller 13 The gas extruded to the outer peripheral side is discharged through the air outlet 11a. That is, the multiblade blower 10 sucks gas through the suction port 11b and sends out the gas through the blowing port 11a.
【0005】[0005]
【発明が解決しようとする課題】このような多翼送風機
10においては、主板31近傍において生じる乱れ渦に
起因する騒音がある。具体的には、以下のような発生機
構によって生じている。羽根車13の内部において、吸
込口11bから吸い込まれた気体は、主に、図1(a)
に示すように、主板31に向かう方向から徐々に外周に
向かうように流れている(気体流れW参照)。ところ
で、図1(b)に示すように、吸込口11bから吸い込
まれた気体の一部は、主板31近傍において、主板31
に衝突した後、外周側に向かうように流れるものがある
(気体流れX参照)。この気体流れXには、主板31へ
の衝突による乱れ渦が発生している。この乱れ渦は、気
体流れXが外周方向に向かうとともに、主板31に衝突
する流れがさらに合流するため、徐々に乱れ渦が発達し
翼33の内周側縁部において最大の乱れ渦を形成する。
この発達した乱れ渦が翼33によって外周側に向かって
掻き出されて、騒音が生じている。In such a multi-blade blower 10, there is noise due to the turbulent vortex generated near the main plate 31. Specifically, it is caused by the following generation mechanism. In the inside of the impeller 13, the gas sucked from the suction port 11b is mainly shown in FIG.
As shown in, the flow gradually flows from the direction toward the main plate 31 toward the outer periphery (see gas flow W). By the way, as shown in FIG. 1B, a part of the gas sucked from the suction port 11b is in the vicinity of the main plate 31, and the main plate 31
After colliding with, some flow toward the outer peripheral side (see gas flow X). Turbulent vortices are generated in the gas flow X due to collision with the main plate 31. In the turbulent vortex, the gas flow X is directed in the outer peripheral direction and the flow colliding with the main plate 31 is further merged, so that the turbulent vortex gradually develops and forms the maximum turbulent vortex at the inner peripheral side edge portion of the blade 33. .
The developed turbulent vortex is scraped out toward the outer peripheral side by the blade 33, and noise is generated.
【0006】空調機に用いられる多翼送風機に対して
は、さらに低騒音化が求められている。本発明の課題
は、羽根車の主板近傍に生じる乱れ渦に起因する騒音が
低減可能な羽根車の提供、及び低騒音の多翼送風機を提
供することにある。Further reduction of noise is required for the multi-blade blower used for the air conditioner. An object of the present invention is to provide an impeller capable of reducing noise caused by turbulent vortices generated near the main plate of the impeller, and to provide a low-noise multiblade blower.
【0007】[0007]
【課題を解決するための手段】請求項1に記載の多翼送
風機の羽根車は、回転軸を中心として回転する主板と、
回転軸を中心として環状に配置され、それぞれ一端が前
記主板に固定されている複数の翼と、複数の翼の他端を
結ぶ環状の側板とを備えている。そして、主板の複数の
翼の間に位置する翼間部は、少なくとも翼の回転方向前
方が切り欠かれている。An impeller of a multiblade blower according to claim 1 is a main plate that rotates about a rotation axis,
It is provided with a plurality of blades arranged in an annular shape around the rotation axis, one end of each being fixed to the main plate, and an annular side plate connecting the other ends of the plurality of blades. The inter-blade portion located between the plurality of blades of the main plate is notched at least in the front of the blade in the rotation direction.
【0008】この多翼送風機の羽根車では、主板の複数
の翼の間に位置する翼間部の少なくとも回転方向前方が
切り欠かれているため、気体流れの主板への衝突と流れ
の合流とによって発達した乱れ渦は、翼によって掻き出
される直前に切り欠かれた翼間部から主板の軸方向外側
に向かってその一部が逃がされる。これにより、翼によ
って気体流れを掻き出す際に発生する騒音を小さくでき
る。In the impeller of this multi-blade blower, at least the front portion in the rotational direction of the interblade located between the plurality of blades of the main plate is notched, so that collision of the gas flow with the main plate and confluence of the flows occur. A part of the turbulent vortex developed by is released from the inter-blade portion cut out immediately before being scraped by the blade toward the axially outer side of the main plate. As a result, noise generated when the gas flow is scraped by the blade can be reduced.
【0009】請求項2に記載の多翼送風機の羽根車は、
請求項1において、翼間部は、円周方向に部分的に切り
欠かれている。この多翼送風機の羽根車では、翼間部
は、主板の少なくとも回転方向前方が円周方向に部分的
に切り欠かれており、翼間部の回転方向後方までは切り
欠かれていない。The impeller of the multiblade blower according to claim 2 is
In Claim 1, the inter-blade portion is partially cut out in the circumferential direction. In the impeller of this multi-blade blower, the inter-blade portion is partially cut out in the circumferential direction at least in the front of the main plate in the rotational direction, and is not cut out to the rear of the inter-blade portion in the rotational direction.
【0010】ところで、翼間部の回転方向後方を切り欠
くと、気体流れとともに乱れ渦を回転方向後方から主板
の軸方向外側に向かって逃がす効果を有するが、一方
で、翼間部の回転方向後方は翼の負圧面であるため、気
体流れのはくりが大きくなる。これにより、気体流れの
はくりが生じ、騒音低減の効果が小さくなるおそれがあ
る。従って、この多翼送風機の羽根車では、翼間部の回
転方向後方は切り欠かれていないため、気体流れのはく
りを増大することがない。これにより、翼間部の回転方
向前方を切り欠くことによる騒音低減の効果を損なうこ
とがない。[0010] By notching the portion between the blades in the direction of rotation in the direction of rotation, it has the effect of allowing turbulent vortices to escape from the rear in the direction of rotation toward the outside in the axial direction of the main plate along with the gas flow. Since the back side is the suction surface of the blade, the gas flow has a large break. As a result, the gas flow may be separated, and the noise reduction effect may be reduced. Therefore, in the impeller of this multi-blade blower, the rear of the inter-blade portion in the direction of rotation is not cut out, and therefore, the flow of gas does not increase. As a result, the effect of noise reduction due to the notch in the front of the inter-blade portion in the rotational direction is not impaired.
【0011】請求項3に記載の多翼送風機の羽根車は、
請求項1又は2において、翼間部は翼の外周側縁部から
内周側縁部まで切り欠かれている。この多翼送風機の羽
根車では、翼間部が翼の外周側縁部から内周側縁部まで
切りかかれているため、乱れ渦が、翼の外周側縁部まで
到達する前に、切り欠かれた翼間部から逃がされやす
い。これにより、翼の外周側縁部まで到達する乱れ渦を
さらに減少させて、騒音を小さくできる。The impeller of the multiblade blower according to claim 3 is
In Claim 1 or 2, the inter-blade portion is notched from the outer peripheral side edge portion to the inner peripheral side edge portion of the blade. In the impeller of this multi-blade blower, since the inter-blade portion is cut from the outer peripheral edge of the blade to the inner peripheral edge, the turbulent vortex is notched before reaching the outer peripheral edge of the blade. Easily escaped from the flanked parts. As a result, the turbulent vortices reaching the outer peripheral side edge of the blade can be further reduced, and the noise can be reduced.
【0012】請求項4に記載の多翼送風機は、請求項1
〜3のいずれかに記載の羽根車と、主板を回転させる駆
動手段と、側板の内周側の開口部に対向する吸込口と羽
根車の外周側に設けられ回転軸に略直交する方向に気体
を送出する吹出口とを有し羽根車を覆うケーシングとを
備えている。この遠心送風機では、駆動手段によって主
板を回転させると、ケーシングに対して羽根車が回転す
る。すると、羽根車の各翼が内周側の空間から外周側の
空間へと気体を掻き出し、吸込口から羽根車の外周側に
押し出された気体が吹出口を通って送り出される。すな
わち、多翼送風機は、吸込口から気体を吸い込み、吹出
口から気体を送り出す。A multiblade blower according to a fourth aspect is the first aspect.
1 to 3, a drive means for rotating the main plate, a suction port facing the inner peripheral side opening of the side plate, and an outer peripheral side of the impeller in a direction substantially orthogonal to the rotation axis. And a casing having an outlet for delivering gas and covering the impeller. In this centrifugal blower, when the drive means rotates the main plate, the impeller rotates with respect to the casing. Then, each blade of the impeller scrapes out the gas from the space on the inner peripheral side to the space on the outer peripheral side, and the gas extruded from the suction port to the outer peripheral side of the impeller is sent out through the air outlet. That is, the multiblade blower sucks gas from the suction port and sends the gas from the blowout port.
【0013】このとき、請求項1〜3のいずれかに記載
の羽根車を採用しているため、気体流れの主板への衝突
と流れの合流とによって生じる乱れ渦を主板の切り欠か
れた翼間部から逃がすことができる。これにより、羽根
車の外周側縁部に到達する乱れ渦を減少させ、騒音を小
さくできる。At this time, since the impeller according to any one of claims 1 to 3 is adopted, the turbulent vortex generated by the collision of the gas flow with the main plate and the confluence of the flows is cut out from the main plate. Can escape from the middle part. As a result, the turbulent vortices reaching the outer peripheral edge of the impeller can be reduced, and the noise can be reduced.
【0014】[0014]
【発明の実施の形態】(1)多翼送風機の構成
本発明の一実施形態にかかる多翼送風機(遠心送風機)
は、図1〜図3に示す従来例の多翼送風機10の羽根車
13において、主板31の複数の翼の内周側縁部の近傍
に凹凸形の波形形状を有し、側板32の主板31側に凹
凸形の波形形状を有し、主板31の複数の翼間部35の
回転方向前方が切り欠かれた形状を有している点のみが
異なる。BEST MODE FOR CARRYING OUT THE INVENTION (1) Configuration of multiblade blower Multiblade blower (centrifugal blower) according to an embodiment of the present invention
In the impeller 13 of the conventional multiblade blower 10 shown in FIGS. 1 to 3, the main plate of the side plate 32 has an uneven corrugated shape in the vicinity of the inner peripheral side edges of the plurality of blades of the main plate 31. It differs only in that it has an uneven corrugated shape on the 31 side and has a shape in which the front of the plurality of interblade portions 35 of the main plate 31 in the rotational direction is cut out.
【0015】図4は、本実施形態の多翼送風機40の側
面図を示し、図5及び図6は、多翼送風機40の羽根車
43の側面図及び平面図を示す。多翼送風機40は、主
として、羽根車63と、羽根車63を覆うケーシング1
1と、羽根車43を回すモータ14とから構成されてい
る。羽根車43は、円板状の主板61の外周縁に複数の
翼33が固定され、複数の翼33の他端が環状の側板6
2で結ばれている。この羽根車43の詳細は後述する。FIG. 4 shows a side view of the multiblade blower 40 of this embodiment, and FIGS. 5 and 6 show a side view and a plan view of an impeller 43 of the multiblade blower 40. The multiblade blower 40 mainly includes an impeller 63 and a casing 1 that covers the impeller 63.
1 and a motor 14 for rotating the impeller 43. In the impeller 43, a plurality of blades 33 are fixed to the outer peripheral edge of a disk-shaped main plate 61, and the other ends of the blades 33 are annular side plates 6.
It is tied with 2. Details of the impeller 43 will be described later.
【0016】ケーシング11には、気体の吹出口11a
と、ベルマウス12により囲まれている気体の吸込口1
1bとが形成されている。吸込口11bは、羽根車43
の側板62に対向するように配置されている。この吸込
口11bを通って羽根車43の内周部の空間へ流れる気
体は、概ね羽根車43の回転軸O−Oに沿った形で流入
し、羽根車43の回転によって回転軸O−Oから離れる
方向(羽根車43の外周方向)に流れていく。また、吹
出口11aは、羽根車43の回転軸O−Oに対して略直
交する向きに気体を吹き出すよう、吸込口11bに直交
するように形成されている。The casing 11 has a gas outlet 11a.
And the gas inlet 1 surrounded by the bell mouth 12
1b are formed. The suction port 11b has an impeller 43.
It is arranged so as to face the side plate 62. The gas flowing into the space of the inner peripheral portion of the impeller 43 through the suction port 11b generally flows along the rotation axis OO of the impeller 43, and the rotation of the impeller 43 causes the rotation axis OO. It flows in the direction away from (the outer peripheral direction of the impeller 43). The outlet 11a is formed so as to be orthogonal to the suction port 11b so that the gas is blown out in a direction substantially orthogonal to the rotation axis OO of the impeller 43.
【0017】モータ14は、その回転シャフトが主板6
1の中心孔61a(図6参照)に装着されており、主板
61を回転させることによって羽根車43全体を回転さ
せる。モータ14の本体部分は、ケーシング11に固定
されている。次に羽根車43について説明する。羽根車
43は、図5及び図6に示すように、主板61と、複数
の翼33と、環状の側板62とから構成されている。こ
の羽根車43は、本実施形態においては、金型を使っ
て、主板61、複数の翼33及び側板62のすべてが一
体成形される樹脂製品である。The rotating shaft of the motor 14 is the main plate 6
It is mounted in the central hole 61a (see FIG. 6) of No. 1 and rotates the entire impeller 43 by rotating the main plate 61. The body of the motor 14 is fixed to the casing 11. Next, the impeller 43 will be described. As shown in FIGS. 5 and 6, the impeller 43 includes a main plate 61, a plurality of blades 33, and an annular side plate 62. In this embodiment, the impeller 43 is a resin product in which the main plate 61, the plurality of blades 33, and the side plates 62 are all integrally molded using a mold.
【0018】主板61は、図6に示すように、中心孔6
1aが形成された円板形状の部材であり、中心孔61a
には、モータ14の回転シャフトが固定される。主板6
1の外周縁には、後述の複数の翼33が回転方向に等間
隔に形成されており、これらの複数の翼33の内周側縁
部の近傍には内周側縁部の周囲に沿って凹凸形状の波形
形状64が成形されている。ここで、波形形状64は、
三角波状を有し、波ピッチPが3mm、波高さHが2m
mの三角波状である(図7(a)参照)。尚、波形形状
は、三角波状に制限されるものではなく、図7(b)及
び図7(c)に示されるような正弦波状や矩形波状でも
よい。また、波形形状の寸法についても、本実施形態の
寸法に制限されるものではなく、ピッチPは2mm以
上、8mm以下の範囲であり、波高さHは1mm以上、
5mm以下の範囲であればよい。The main plate 61 has a central hole 6 as shown in FIG.
1a is a disk-shaped member having a center hole 61a
A rotary shaft of the motor 14 is fixed to the. Main plate 6
A plurality of blades 33, which will be described later, are formed on the outer peripheral edge of the blade 1 at equal intervals in the rotation direction. A corrugated shape 64 having an uneven shape is formed. Here, the waveform shape 64 is
It has a triangular wave shape, the wave pitch P is 3 mm, and the wave height H is 2 m.
It has a triangular wave shape of m (see FIG. 7A). The waveform shape is not limited to the triangular wave shape, and may be a sine wave shape or a rectangular wave shape as shown in FIGS. 7B and 7C. Further, the size of the corrugated shape is not limited to the size of this embodiment, and the pitch P is in the range of 2 mm or more and 8 mm or less, and the wave height H is 1 mm or more,
It may be in the range of 5 mm or less.
【0019】また、主板61の複数の翼33の間に位置
する翼間部65は、回転方向前方が切り欠かれている。
これらの複数の翼間部65は、円周方向には、翼33の
円周方向厚みよりも大きく、かつ、回転方向前方に隣接
する他の翼33の回転方向後方に達しない長さに切り欠
かれている。また、翼間部65の径方向は、翼33の形
状に沿って、外周側縁部から内周側縁部まで達する長さ
に切り欠かれている。The inter-blade portion 65 located between the plurality of blades 33 of the main plate 61 is notched in the front in the rotational direction.
The plurality of blade-to-blade portions 65 are circumferentially cut to a length that is larger than the thickness of the blade 33 in the circumferential direction and that does not reach the rear in the rotational direction of another blade 33 that is adjacent to the front in the rotational direction. Missing. Further, the radial direction of the inter-blade portion 65 is cut out along the shape of the blade 33 to a length that extends from the outer peripheral side edge portion to the inner peripheral side edge portion.
【0020】翼33は、回転方向前方に凹面形を有し、
回転軸O−Oを中心として環状に複数配置された部材で
ある。翼33は、一端が主板61の外周縁に固定され、
そこから回転軸O−Oに沿ってねじれ無く長く延びてい
る。そして、翼33の他端は、図5及び図6に示すよう
に、環状の側板62で連結されている。環状の側板62
は、翼33の他端の外周側に配置され、各翼33を連結
している。この側板62も、主板61及び複数の翼33
とともに一体成形されている。そして、側板62の主板
61側の面には、凹凸形状の波形形状66が成形されて
いる。ここで、波形形状66は、主板61の波形形状6
4と同様に、波ピッチPが3mm、波高さHが2mmの
三角波状である(図7(a)参照)。尚、波形形状は、
三角波状に制限されるものではなく、図7(b)及び図
7(c)に示されるように、正弦波状や矩形波状でもよ
い。また、波形形状の寸法についても、本実施形態の寸
法に制限されるものではなく、ピッチPは2mm以上、
8mm以下の範囲であり、波高さHは1mm以上、5m
m以下の範囲であればよい。The blade 33 has a concave shape in the front direction of rotation,
It is a member that is annularly arranged around the rotation axis OO. The blade 33 has one end fixed to the outer peripheral edge of the main plate 61,
From there, it extends long along the axis of rotation OO without twisting. Then, the other ends of the blades 33 are connected by an annular side plate 62 as shown in FIGS. 5 and 6. Annular side plate 62
Is arranged on the outer peripheral side of the other end of the blade 33, and connects the blades 33. The side plate 62 also includes the main plate 61 and the plurality of wings 33.
It is integrally molded with. A corrugated shape 66 having an uneven shape is formed on the surface of the side plate 62 on the main plate 61 side. Here, the corrugated shape 66 is the corrugated shape 6 of the main plate 61.
Similar to 4, the wave pitch P is 3 mm, and the wave height H is 2 mm (see FIG. 7A). The waveform shape is
The shape is not limited to the triangular wave shape, but may be a sine wave shape or a rectangular wave shape as shown in FIGS. 7B and 7C. Further, the size of the corrugated shape is not limited to the size of this embodiment, and the pitch P is 2 mm or more,
The range is 8 mm or less, and the wave height H is 1 mm or more and 5 m
It may be in the range of m or less.
【0021】(2)多翼送風機の動作
モータ14を回して多翼送風機40を作動させると、羽
根車43が、ケーシング11に対して、図6に示す回転
方向Rの向きに回転する。すなわち、多翼送風機40で
は、主として翼33の凹面となっている回転方向前方の
面によって、気体を掻き出す。これにより、羽根車43
の翼33が羽根車43の内周側の空間から外周側の空間
へと気体を掻き出し、吸込口11bから羽根車43の内
周側の空間に気体が吸い込まれるとともに、羽根車43
の外周側に掻き出された気体が吹出口11aに集められ
て吹き出される(図4の気体流れZを参照)。すなわ
ち、多翼送風機40は、吸込口11bから回転軸O−O
に沿った形で気体を吸い込み、吹出口11aから回転軸
O−Oに直交する方向に気体を送り出す。尚、図4では
回転軸O−Oの右側における気体流れZのみを表示して
いるが、回転軸O−Oの左側において羽根車13の外周
側に掻き出された気体は、ケーシング11に沿って吹出
口11aまで流れ、そこから吹き出される。(2) Operation of multi-blade blower When the motor 14 is rotated to operate the multi-blade blower 40, the impeller 43 rotates in the direction of rotation R shown in FIG. That is, in the multiblade blower 40, the gas is scraped out mainly by the front surface in the rotation direction, which is the concave surface of the blade 33. As a result, the impeller 43
Blades 33 scrape out the gas from the space on the inner peripheral side of the impeller 43 to the space on the outer peripheral side, and the gas is sucked into the space on the inner peripheral side of the impeller 43 from the suction port 11b.
The gas that has been scraped to the outer peripheral side is collected and blown out at the outlet 11a (see the gas flow Z in FIG. 4). That is, the multiblade blower 40 has the rotation axis OO from the suction port 11b.
The gas is sucked in along the shape of and is sent out from the outlet 11a in a direction orthogonal to the rotation axis OO. Although only the gas flow Z on the right side of the rotation axis OO is shown in FIG. Flow to the outlet 11a, and then blown out from there.
【0022】(3)羽根車の輸送
羽根車43を輸送する際、複数の羽根車43を回転軸O
−O方向に積載する。ここで、本実施形態の羽根車43
の主板61の翼間部65は、前述のように、円周方向に
は、翼33の円周方向厚さよりも大きく、また、径方向
には、翼33の曲がり形状に沿って翼33の外周側縁部
から内周側縁部まで達する長さに切り欠かれている。こ
の形状を利用して、二つの羽根車43を回転軸O−O方
向から重ねる。一方の羽根車43の複数の翼間部65の
切り欠きに、他方の羽根車43の対応する翼33を嵌め
込むことができる。このようにして嵌合した二つの羽根
車43は、さらに所定の積載高さまで積載された後、輸
送される。(3) Transport of Impellers When transporting the impellers 43, the plurality of impellers 43 are rotated along the rotation axis O.
Load in the -O direction. Here, the impeller 43 of the present embodiment
As described above, the blade-to-blade portion 65 of the main plate 61 of the blade is larger than the thickness of the blade 33 in the circumferential direction in the circumferential direction, and in the radial direction, the portion of the blade 33 is formed along the curved shape of the blade 33. It is cut out to a length that extends from the outer peripheral side edge to the inner peripheral side edge. Utilizing this shape, the two impellers 43 are stacked from the direction of the rotation axis OO. The corresponding blades 33 of the other impeller 43 can be fitted into the notches in the inter-blade portions 65 of the one impeller 43. The two impellers 43 fitted in this way are further loaded to a predetermined loading height and then transported.
【0023】(4)実験例
本実施形態の羽根車を使用した多翼送風機について、騒
音測定実験を行った結果について説明する。本実験は、
図2及び図3に示す従来例のものと、図5及び図6に示
される本実施形態のものとについての測定実験を行っ
た。尚、本実施形態においては、騒音低減を目的とし
て、主板61に成形された波形形状64と、側板62に
成形された波形形状66と、主板61の翼間部65を切
り欠いたものとが同時に成形されている。そこで、これ
ら3つの形状のそれぞれについての騒音低減の効果を確
認するために、これら3つの形状の各一つのみを成形し
た羽根車を準備し、騒音測定実験を行った。以下に騒音
測定実験の結果を示す。(4) Experimental Example The result of a noise measurement experiment on the multiblade blower using the impeller of this embodiment will be described. This experiment is
Measurement experiments were performed on the conventional example shown in FIGS. 2 and 3 and the present embodiment shown in FIGS. 5 and 6. In the present embodiment, for the purpose of noise reduction, the corrugated shape 64 formed on the main plate 61, the corrugated shape 66 formed on the side plate 62, and the inter-blade portion 65 of the main plate 61 are cut out. Molded at the same time. Therefore, in order to confirm the noise reduction effect for each of these three shapes, an impeller formed by molding each one of these three shapes was prepared and a noise measurement experiment was conducted. The results of noise measurement experiments are shown below.
【0024】主板61に波形形状64のみが成形され
た羽根車の場合
従来例に比べて、騒音値が0.8dB減少した。
側板62に波形形状66のみが成形された羽根車の場
合
従来例に比べて、騒音値が0.5dB減少した。
主板61の翼間部65を切り欠いた形状のみを有する
羽根車の場合
従来例に比べて、騒音値が0.5dB減少した。In the case of the impeller in which only the corrugated shape 64 is formed on the main plate 61, the noise value is reduced by 0.8 dB as compared with the conventional example. In the case of the impeller in which only the corrugated shape 66 is formed on the side plate 62, the noise value is reduced by 0.5 dB as compared with the conventional example. In the case of the impeller having only the shape in which the blade portion 65 of the main plate 61 is cut out, the noise value is reduced by 0.5 dB as compared with the conventional example.
【0025】以上の結果より、本実施形態において騒音
低減を目的として適用された3つの形状のいずれにおい
ても騒音値の低減が確認された。
(5)多翼送風機の特徴
本実施形態の多翼送風機の特徴には、以下のようなもの
がある。
羽根車の主板に成形された波形形状による騒音低減
従来例の多翼送風機10においては、主板31近傍にお
いて生じる乱れ渦に起因する騒音がある。具体的には、
以下のような発生機構によって生じている。From the above results, it was confirmed that the noise value was reduced in any of the three shapes applied for the purpose of noise reduction in this embodiment. (5) Features of multi-blade blower The features of the multi-blade blower of the present embodiment include the following. Noise reduction due to the corrugated shape formed on the main plate of the impeller In the multi-blade blower 10 of the conventional example, there is noise due to turbulent vortices generated near the main plate 31. In particular,
It is caused by the following generation mechanism.
【0026】羽根車13の内部において、図1(b)に
示すように、吸込口11bから吸い込まれた気体の一部
は、主板31近傍において、主板31に衝突した後、外
周側に向かうように流れているものがある(気体流れX
参照)。この気体流れXには、主板31への衝突による
乱れ渦が発生している。この乱れ渦は、気体流れXが外
周方向に向かうとともに、主板31に衝突する流れがさ
らに合流する。そして、気体流れXの乱れ渦が徐々に発
達し、翼33の内周側縁部において最大の乱れ渦を形成
する。この発達した乱れ渦が翼33によって外周側に向
かって掻き出されて、騒音が生じている。Inside the impeller 13, as shown in FIG. 1B, a part of the gas sucked from the suction port 11b collides with the main plate 31 in the vicinity of the main plate 31 and then heads toward the outer peripheral side. Some are flowing (gas flow X
reference). Turbulent vortices are generated in the gas flow X due to collision with the main plate 31. In the turbulent vortex, the gas flow X is directed in the outer peripheral direction, and the flows colliding with the main plate 31 are further merged. Then, the turbulent vortex of the gas flow X gradually develops to form the maximum turbulent vortex at the inner peripheral edge of the blade 33. The developed turbulent vortex is scraped out toward the outer peripheral side by the blade 33, and noise is generated.
【0027】一方、本実施形態の多翼送風機40の羽根
車43では、主板61の側板62側の面の少なくとも翼
33の内周側縁部の近傍に凹凸形の波形形状64が成形
されているため、図8(a)に示すように、気体流れZ
1の主板61への衝突と流れの合流とによって発達した
乱れ渦は、翼33に到達する直前につぶされて小さくな
る。これにより、翼33によって気体流れZ1を掻き出
す際に発生する騒音を小さくできる。On the other hand, in the impeller 43 of the multiblade blower 40 of the present embodiment, the corrugated corrugated shape 64 is formed on the surface of the main plate 61 on the side plate 62 side at least near the inner peripheral side edge of the blade 33. Therefore, as shown in FIG. 8A, the gas flow Z
The turbulent vortex developed by the collision of the No. 1 with the main plate 61 and the confluence of the flows is crushed and becomes small immediately before reaching the blade 33. As a result, noise generated when the gas flow Z1 is scraped by the blades 33 can be reduced.
【0028】羽根車の側板に成形された波形形状によ
る騒音低減
従来例の多翼送風機10においては、側板32の外周端
近傍を渦中心とした旋回渦が生じている。この旋回渦
は、羽根車13の送風仕事に寄与しないため、結果とし
て、送風機効率の低下や騒音の原因となっている。具体
的には、以下のような発生機構によって生じている。Noise Reduction by Wave Shape Formed on Side Plate of Impeller In the conventional multiblade blower 10, a swirl vortex is generated with the vortex center near the outer peripheral end of the side plate 32. These swirling vortices do not contribute to the work of blowing the impeller 13 and, as a result, reduce the efficiency of the blower and cause noise. Specifically, it is caused by the following generation mechanism.
【0029】図1(c)に示すように、ケーシング11
内の気体の一部は、側板32近傍において、羽根車13
の外周に掻き出された後、羽根車13のベルマウス12
近傍から羽根車13の内周側に再度吸い込まれるような
旋回渦Yを生じている。このため、羽根車13におい
て、羽根車13の軸方向全長Bに対する旋回渦Yが生じ
ている部分の軸方向長さbの比b/B(以下、ブロッケ
ージファクタBFとする。)に相当する分については、
有効に送風仕事ができていない。これにより、送風機効
率の低下や騒音が生じる。As shown in FIG. 1C, the casing 11
A part of the gas inside the impeller 13 near the side plate 32.
After being scraped to the outer circumference of the
A swirling vortex Y is generated which is sucked again from the vicinity to the inner peripheral side of the impeller 13. Therefore, in the impeller 13, it corresponds to a ratio b / B (hereinafter, referred to as a blockage factor B F ) of the axial length b of the portion where the swirling vortex Y is generated with respect to the axial total length B of the impeller 13. For what you do,
Blower work is not done effectively. As a result, the efficiency of the blower is reduced and noise is generated.
【0030】一方、本実施形態の多翼送風機40の羽根
車43では、側板62の主板61側の面に凹凸形状の波
形形状66が成形されているため、側板62の羽根車4
3出口近傍の圧力変動が緩和される。すると、図8
(b)に示すように、羽根車43によって出口側に掻き
出された気体流れは、羽根車43の回転軸方向側板62
側から再度羽根車43の内周側に吸い込まれにくくなる
ため、側板62の近傍において生じていた旋回渦Z2が
小さくなる。これにより、BF値がb1/B1と小さく
なり羽根車43の有効に送風仕事ができる部分が大きく
なるため、送風機効率が向上し、騒音も小さくなる。On the other hand, in the impeller 43 of the multiblade blower 40 of this embodiment, since the corrugated shape 66 of the uneven shape is formed on the surface of the side plate 62 on the side of the main plate 61, the impeller 4 of the side plate 62 is formed.
3 Pressure fluctuations near the outlet are alleviated. Then, as shown in FIG.
As shown in (b), the gas flow scraped to the outlet side by the impeller 43 is the side plate 62 in the rotation axis direction of the impeller 43.
Since it becomes difficult to be sucked into the inner peripheral side of the impeller 43 again from the side, the swirling vortex Z2 generated in the vicinity of the side plate 62 becomes small. As a result, the B F value is reduced to b1 / B1 and the portion of the impeller 43 that can effectively perform the blowing work is increased, so that the blower efficiency is improved and the noise is reduced.
【0031】羽根車の主板の翼間部を切り欠くことに
よる騒音低減
本実施形態の多翼送風機40の羽根車43では、主板6
1の複数の翼33の間に位置する翼間部65の少なくと
も回転方向前方が切り欠かれているため、図8(c)に
示すように、気体流れZ3の主板61への衝突と流れの
合流とによって発達した乱れ渦は、翼33によって掻き
出される直前に切り欠かれた翼間部65から主板61の
軸方向外側に向かってその一部が逃がされる。これによ
り、図8(a)に示す主板61に成形された波形形状6
4と同様に、翼33によって気体流れを掻き出す際に発
生する騒音を小さくできる。Noise reduction by notching the blades of the main plate of the impeller In the impeller 43 of the multiblade blower 40 of this embodiment, the main plate 6
Since at least the front portion in the rotational direction of the inter-blade portion 65 located between the plurality of blades 33 of one is cut out, as shown in FIG. 8C, the collision of the gas flow Z3 with the main plate 61 and the flow A part of the turbulent vortex developed by the merging is released from the inter-blade portion 65 cut out immediately before being scraped out by the blade 33 toward the outer side in the axial direction of the main plate 61. As a result, the corrugated shape 6 formed on the main plate 61 shown in FIG.
As in the case of 4, the noise generated when the gas flow is scraped out by the blades 33 can be reduced.
【0032】また、本実施形態の羽根車43の翼間部6
5は、主板61の回転方向前方が円周方向に部分的に切
り欠かれており、翼間部65の回転方向後方までは切り
欠かれていない。従って、翼間部65の回転方向後方に
おける気体流れのはくりを増大することがない。これに
より、翼間部65の回転方向前方を切り欠くことによる
騒音低減の効果を損なうことがない。In addition, the inter-blade portion 6 of the impeller 43 of the present embodiment.
5, the front part of the main plate 61 in the rotational direction is partially cut out in the circumferential direction, and is not cut out to the rear part of the inter-blade portion 65 in the rotational direction. Therefore, the separation of the gas flow behind the inter-blade portion 65 in the rotational direction is not increased. As a result, the effect of noise reduction due to the notch in the front of the inter-blade portion 65 in the rotational direction is not impaired.
【0033】さらに、本実施形態の羽根車43の翼間部
65は、翼33の外周側縁部から内周側縁部まで切り欠
かれているため、気体流れZ3の乱れ渦が、翼33の外
周側縁部まで到達する前に、切り欠かれた翼間部65か
ら逃がされやすい。これにより、翼33の外周側縁部ま
で到達する乱れ渦をさらに減少させて、騒音を小さくで
きる。Further, since the inter-blade portion 65 of the impeller 43 of this embodiment is notched from the outer peripheral side edge portion to the inner peripheral side edge portion of the blade 33, the turbulent vortex of the gas flow Z3 is generated in the blade 33. Before reaching the outer peripheral side edge portion, it is easy to escape from the notched interblade portion 65. As a result, the turbulent vortices reaching the outer peripheral side edge of the blade 33 can be further reduced, and the noise can be reduced.
【0034】羽根車の輸送時の積載効率の向上
本実施形態の羽根車43の主板61の翼間部65には、
前述のように、円周方向には、翼33の円周方向厚さよ
りも大きく、また、径方向には、翼33の曲がり形状に
沿って翼33の外周側縁部から内周側縁部まで達する長
さに切り欠かれている。この形状を利用して、二つの羽
根車43を回転軸O−O方向から重ねて、複数の翼間部
65の切り欠きに、それぞれ対応する翼33を嵌め込む
ことができる。これにより、羽根車43の積載時の積載
効率を向上することができる。Improving the loading efficiency of the impeller during transportation The interblade portion 65 of the main plate 61 of the impeller 43 of the present embodiment includes:
As described above, in the circumferential direction, it is larger than the circumferential thickness of the blade 33, and in the radial direction, along the curved shape of the blade 33, from the outer peripheral side edge portion to the inner peripheral side edge portion of the blade 33. It is cut into a length that reaches up to. By utilizing this shape, the two impellers 43 can be overlapped with each other in the rotation axis OO direction, and the corresponding blades 33 can be fitted into the notches of the plurality of blade-to-blade portions 65. As a result, the loading efficiency when the impeller 43 is loaded can be improved.
【0035】他の実施形態
前記実施形態では、樹脂製の羽根車を用いた遠心送風機
に本発明を適用しているが、板金製の羽根車を用いた遠
心送風機に対しても本発明を適用することができる。 Other Embodiments In the above embodiments, the present invention is applied to a centrifugal blower using a resin impeller, but the present invention is also applied to a centrifugal blower using a sheet metal impeller. can do.
【0036】[0036]
【発明の効果】以上の説明に述べたように、本発明によ
れば、以下の効果が得られる。請求項1にかかる発明で
は、多翼送風機の羽根車は、主板の複数の翼の間に位置
する翼間部の少なくとも回転方向前方が切り欠かれてい
るため、気体流れの主板への衝突と流れの合流とによっ
て発達した乱れ渦は、翼によって掻き出される直前に切
り欠かれた翼間部から主板の軸方向外側に向かって逃が
される。これにより、翼によって気体流れを掻き出す際
に発生する騒音を小さくできる。As described above, according to the present invention, the following effects can be obtained. In the invention according to claim 1, in the impeller of the multiblade blower, at least the front portion in the rotational direction of the interblade portion located between the plurality of blades of the main plate is cut out, so that collision of gas flow with the main plate occurs. The turbulent vortices developed by the confluence of flows are released from the inter-blade portion cut out immediately before being scraped by the blades toward the axially outer side of the main plate. As a result, noise generated when the gas flow is scraped by the blade can be reduced.
【0037】請求項2にかかる発明では、多翼送風機の
羽根車の翼間部は、主板の回転方向前方が円周方向に部
分的に切り欠かれているため、翼間部の回転方向後方の
気体流れのはくりが増大せず、騒音低減の効果を損なう
ことがない。請求項3にかかる発明では、多翼送風機の
羽根車の翼間部は、翼の外周側縁部から内周側縁部まで
切り欠かれているため、乱れ渦が、翼の外周側縁部まで
到達する前に、切り欠かれた翼間部から逃がされる。こ
れにより、翼の外周側縁部まで到達する乱れ渦をさらに
減少させて、騒音を小さくできる。In the invention according to claim 2, the inter-blade portion of the impeller of the multi-blade blower is partially cut out in the circumferential direction at the front side in the rotational direction of the main plate. The separation of the gas flow does not increase, and the noise reduction effect is not impaired. In the invention according to claim 3, since the inter-blade portion of the impeller of the multi-blade blower is cut out from the outer peripheral side edge to the inner peripheral side edge of the blade, turbulent vortices are generated on the outer peripheral side edge of the blade. Before it reaches, it is escaped from the notched interwing. As a result, the turbulent vortices reaching the outer peripheral side edge of the blade can be further reduced, and the noise can be reduced.
【0038】請求項4にかかる発明では、多翼送風機
は、請求項1〜3のいずれかに記載の羽根車を採用して
いるため、気体流れの主板への衝突と流れの合流とによ
って生じる乱れ渦が、主板の翼間部を切り欠くことによ
り、乱れ渦を主板の切り欠かれた翼間部から逃がすこと
ができる。これにより、羽根車の外周側縁部に到達する
乱れ渦を減少させ、騒音を小さくできる。In the invention according to claim 4, since the multi-blade blower adopts the impeller according to any one of claims 1 to 3, it is caused by the collision of the gas flow with the main plate and the confluence of the flows. The turbulent vortex cuts out between the blades of the main plate, so that the turbulent vortex can escape from the notched blades of the main plate. As a result, the turbulent vortices reaching the outer peripheral edge of the impeller can be reduced, and the noise can be reduced.
【図1】(a)従来例の多翼送風機の側面図(ケーシン
グ部分は断面図)。
(b)従来例の多翼送風機の側面図であって、主板近傍
の騒音の発生機構を説明する図(一部羽根車の断面を図
示)。
(c)従来例の多翼送風機の側面図であって、側板近傍
の騒音の発生機構を説明する図(一部羽根車の断面を図
示)。FIG. 1A is a side view of a conventional multi-blade blower (a casing portion is a cross-sectional view). (B) It is a side view of the multi-blade fan of a prior art example, Comprising: The figure explaining the noise generation mechanism of the main plate vicinity (illustrating the cross section of a part impeller). (C) It is a side view of the multi-blade fan of a prior art example, Comprising: The figure explaining the noise generation mechanism of the side plate vicinity (illustrating the cross section of a part impeller).
【図2】従来例の多翼送風機の羽根車の斜視図。FIG. 2 is a perspective view of an impeller of a conventional multiblade blower.
【図3】従来例の多翼送風機の羽根車の平面図。FIG. 3 is a plan view of an impeller of a conventional multiblade blower.
【図4】第1実施形態の多翼送風機の側面図(ケーシン
グ部分は断面図)。FIG. 4 is a side view of the multiblade fan according to the first embodiment (a casing portion is a cross-sectional view).
【図5】第1実施形態の多翼送風機の羽根車の側面図
(一部断面を図示)。FIG. 5 is a side view (partially shown in cross section) of an impeller of the multi-blade blower of the first embodiment.
【図6】第1実施形態の多翼送風機の羽根車の平面図。FIG. 6 is a plan view of an impeller of the multiblade fan according to the first embodiment.
【図7】(a)波形形状(三角波状)の拡大図。 (b)波形形状(正弦波状)の拡大図。 (c)波形形状(矩形波状)の拡大図。FIG. 7A is an enlarged view of a waveform shape (triangular wave shape). (B) An enlarged view of a waveform shape (sine wave shape). (C) An enlarged view of a waveform shape (rectangular wave shape).
【図8】(a)第1実施形態の多翼送風機の側面図であ
って、主板に成形された波形形状の騒音低減効果を説明
する図(一部羽根車の断面を図示)。(b)第1実施形
態の多翼送風機の側面図であって、側板に成形された波
形形
状の騒音低減効果を説明する図。
(c)第1実施形態の多翼送風機の側面図であって、主
板の翼間部を切り欠いた形状の騒音低減効果を説明する
図(一部羽根車の断面を図示)。FIG. 8A is a side view of the multi-blade blower according to the first embodiment and is a view for explaining the noise reduction effect of the corrugated shape formed on the main plate (a cross section of a part of the impeller is shown). (B) It is a side view of the multiblade fan of 1st Embodiment, Comprising: The figure explaining the noise reduction effect of the corrugated shape shape | molded by the side plate. (C) It is a side view of the multiblade fan of 1st Embodiment, Comprising: The figure explaining the noise reduction effect of the shape which notched the blade part of the main plate (a cross section of a part impeller is shown).
10、40 多翼送風機 11 ケーシング 11a 吹出口 11b 吸込口 12 ベルマウス 13、43 羽根車 14 モータ(駆動手段) 31、61 主板 32、62 側板 33 翼 64 波形形状(主板側) 35、65 翼間部 66 波形形状(側板側) 10, 40 multi-blade blower 11 casing 11a outlet 11b Suction port 12 Bellmouth 13,43 Impeller 14 Motor (drive means) 31, 61 Main plate 32, 62 side plate 33 wings 64 corrugated shape (main plate side) 35, 65 between wings 66 corrugated shape (side plate side)
───────────────────────────────────────────────────── フロントページの続き Fターム(参考) 3H033 AA02 AA18 BB02 BB06 BB20 CC01 CC03 DD09 DD12 EE06 EE08 3H034 AA02 AA18 BB02 BB06 BB19 BB20 CC01 CC03 DD01 EE06 EE08 3H035 CC01 CC06 3L049 BB07 BD01 ─────────────────────────────────────────────────── ─── Continued front page F-term (reference) 3H033 AA02 AA18 BB02 BB06 BB20 CC01 CC03 DD09 DD12 EE06 EE08 3H034 AA02 AA18 BB02 BB06 BB19 BB20 CC01 CC03 DD01 EE06 EE08 3H035 CC01 CC06 3L049 BB07 BD01
Claims (4)
板(61)と、 前記回転軸(O−O)を中心として環状に配置され、そ
れぞれ一端が前記主板(61)に固定されている複数の
翼(33)と、 前記複数の翼(33)の他端を結ぶ環状の側板(62)
と、を備え、 前記主板(61)の前記複数の翼(33)の間に位置す
る翼間部(65)は、少なくとも前記翼(33)の回転
方向前方が切り欠かれている、多翼送風機の羽根車(4
3)。1. A main plate (61) which rotates about a rotation axis (O-O), and an annular arrangement about the rotation axis (O-O), one end of each being fixed to the main plate (61). A plurality of blades (33) that are connected to each other, and an annular side plate (62) that connects the other ends of the plurality of blades (33).
The multi-blade, wherein an inter-blade portion (65) located between the plurality of blades (33) of the main plate (61) is cut out at least in a front direction of rotation of the blade (33). Blower impeller (4
3).
に切り欠かれている、請求項1に記載の多翼送風機の羽
根車(43)。2. An impeller (43) for a multi-blade blower according to claim 1, wherein the inter-blade portion (65) is partially cut out in a circumferential direction.
外周側縁部から内周側縁部まで切り欠かれている、請求
項1又は2に記載の多翼送風機の羽根車(43)。3. The blade of a multi-blade blower according to claim 1, wherein the inter-blade portion (65) is cut out from an outer peripheral edge portion to an inner peripheral edge portion of the blade (33). Car (43).
(43)と、 前記主板(61)を回転させる駆動手段(14)と、 前記側板(62)の内周側の開口部に対向する吸込口
(11b)と、前記羽根車(43)の外周側に設けられ
前記回転軸(O−O)に略直交する方向に気体を送出す
る吹出口(11a)とを有し、前記羽根車(43)を覆
うケーシング(11)と、を備えた多翼送風機。4. The impeller (43) according to any one of claims 1 to 3, a drive means (14) for rotating the main plate (61), and an opening on the inner peripheral side of the side plate (62). A suction port (11b) facing each other, and a blowout port (11a) provided on the outer peripheral side of the impeller (43) for delivering gas in a direction substantially orthogonal to the rotation axis (OO), A multi-blade blower comprising: a casing (11) covering the impeller (43).
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001196179A JP4736253B2 (en) | 2001-06-28 | 2001-06-28 | Impeller of multi-blade fan and multi-blade fan equipped with the impeller |
EP02733494A EP1411247B1 (en) | 2001-06-28 | 2002-06-12 | Impeller for multiblade blower and multiblade blower having the same |
DE60229060T DE60229060D1 (en) | 2001-06-28 | 2002-06-12 | WHEEL FOR MULTIPLOWER FAN AND THIS EXPOSED MULTIPLE FAN |
AT02733494T ATE409287T1 (en) | 2001-06-28 | 2002-06-12 | IMPELLER FOR MULTI-BLADE FANS AND MULTI-BLADE FANS HAVING THE SAME |
ES02733494T ES2312576T3 (en) | 2001-06-28 | 2002-06-12 | IMPULS0R FOR MULTIPLE ALABES BLOWER AND MULTIPLE ALABES BLOWER EQUIPPED WITH THE SAME. |
PCT/JP2002/005883 WO2003002874A1 (en) | 2001-06-28 | 2002-06-12 | Impeller for multiblade blower, and multiblade blower having the same |
CN02141245.6A CN1212478C (en) | 2001-06-28 | 2002-06-28 | Vane of multi-blade fan and multi-blade fan with said vane |
CN02240969U CN2572074Y (en) | 2001-06-28 | 2002-06-28 | Impeller of multi-vane fan and multi-vane fan equipped with same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001196179A JP4736253B2 (en) | 2001-06-28 | 2001-06-28 | Impeller of multi-blade fan and multi-blade fan equipped with the impeller |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2003013887A true JP2003013887A (en) | 2003-01-15 |
JP4736253B2 JP4736253B2 (en) | 2011-07-27 |
Family
ID=19034033
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Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2001196179A Expired - Fee Related JP4736253B2 (en) | 2001-06-28 | 2001-06-28 | Impeller of multi-blade fan and multi-blade fan equipped with the impeller |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102312857A (en) * | 2011-08-25 | 2012-01-11 | 张家港市东丰特种风机有限公司 | Impeller of heated-air circulation fan |
JP2016035230A (en) * | 2014-08-01 | 2016-03-17 | 株式会社デンソー | Blower |
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FR1284741A (en) * | 1961-02-15 | 1962-02-16 | Rotary machine for moving fluids such as a blower or pump or the like | |
JPS53144508A (en) * | 1977-05-20 | 1978-12-15 | Neos Kk | Process for preparing perfluoroolefin oligomer |
JPS61200494A (en) * | 1985-02-28 | 1986-09-05 | 原子燃料工業株式会社 | Flow control simple tube |
JPS62173600A (en) * | 1986-01-27 | 1987-07-30 | 松下電工株式会社 | Emergency alarm receiver |
JPH0239595A (en) * | 1988-07-29 | 1990-02-08 | Ibiden Co Ltd | Manufacture of ceramic wiring board with through hole |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53144508U (en) * | 1977-04-20 | 1978-11-14 | ||
JPS61200494U (en) * | 1985-06-05 | 1986-12-15 | ||
JPS62173600U (en) * | 1986-04-24 | 1987-11-04 | ||
JPH0239595U (en) * | 1988-09-06 | 1990-03-16 |
-
2001
- 2001-06-28 JP JP2001196179A patent/JP4736253B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1284741A (en) * | 1961-02-15 | 1962-02-16 | Rotary machine for moving fluids such as a blower or pump or the like | |
JPS53144508A (en) * | 1977-05-20 | 1978-12-15 | Neos Kk | Process for preparing perfluoroolefin oligomer |
JPS61200494A (en) * | 1985-02-28 | 1986-09-05 | 原子燃料工業株式会社 | Flow control simple tube |
JPS62173600A (en) * | 1986-01-27 | 1987-07-30 | 松下電工株式会社 | Emergency alarm receiver |
JPH0239595A (en) * | 1988-07-29 | 1990-02-08 | Ibiden Co Ltd | Manufacture of ceramic wiring board with through hole |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102312857A (en) * | 2011-08-25 | 2012-01-11 | 张家港市东丰特种风机有限公司 | Impeller of heated-air circulation fan |
JP2016035230A (en) * | 2014-08-01 | 2016-03-17 | 株式会社デンソー | Blower |
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