JP2003093138A - Hair dryer - Google Patents
Hair dryerInfo
- Publication number
- JP2003093138A JP2003093138A JP2001291755A JP2001291755A JP2003093138A JP 2003093138 A JP2003093138 A JP 2003093138A JP 2001291755 A JP2001291755 A JP 2001291755A JP 2001291755 A JP2001291755 A JP 2001291755A JP 2003093138 A JP2003093138 A JP 2003093138A
- Authority
- JP
- Japan
- Prior art keywords
- blade
- blades
- hair dryer
- fan
- downstream
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、温風を吐出して毛
髪の乾燥やセットを行うことができるヘアードライヤー
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hair dryer capable of discharging hot air to dry or set hair.
【０００２】[0002]
【従来の技術】従来より、温風を吐出して毛髪の乾燥や
セットを行うヘアードライヤーが使用されている。この
ヘアードライヤーは、略筒状をした細長いケーシングの
内部に空気流路を形成して、ケーシングの上流側端部に
吸込口を設けると共に下流側端部に吹出口を設けてあ
り、ケーシング内に形成された空気流路にはファン，モ
ータ，ヒータが配設してある。2. Description of the Related Art Hair dryers for drying and setting hair by ejecting warm air have been conventionally used. In this hair dryer, an air flow path is formed inside a substantially cylindrical elongated casing, and an inlet is provided at an upstream end of the casing and an outlet is provided at a downstream end of the casing. A fan, a motor and a heater are arranged in the formed air flow path.
【０００３】このヘアードライヤーを使用するには、電
源スイッチを入れてモータ，ヒータに通電し、吸込口よ
り吸い込んだ空気をファンにて空気流路の下流側に送風
し、ヒータにて加温した空気を吹き出して毛髪の乾燥や
セットを行うものである。To use this hair dryer, the power switch is turned on to energize the motor and the heater, the air sucked from the suction port is blown to the downstream side of the air flow path by the fan, and the heater is heated. Air is blown out to dry and set hair.
【０００４】このようなヘアードライヤーは、コンパク
トにするために略筒状をした細長いケーシングを用いて
おり、ファンは上流側ケーシング部と下流側ケーシング
部との間の連結部に収納してある。連結部は、小径の上
流側ケーシング部と大径の下流側ケーシング部とを連結
する上流側ほど小径となる円錐側面状をしたもので、こ
の連結部に収納配置されるファンも連結部に沿うような
形状をしたものであり、以下に説明する。In order to make the hair dryer compact, an elongated casing having a substantially cylindrical shape is used, and the fan is housed in a connecting portion between the upstream casing portion and the downstream casing portion. The connecting portion has a conical side surface shape in which the upstream side connecting the small-diameter upstream casing portion and the large-diameter downstream casing portion has a smaller diameter toward the upstream side, and the fan housed in the connecting portion also follows the connecting portion. It has such a shape and will be described below.
【０００５】ファンは、図７（ａ）に示すように、回転
の中心部に位置するハブ部５と、ハブ部５より突設され
る羽根６’とで構成される。ハブ部５は、上流側ほど小
径な斜流型形状に形成され、その側面部５１の中心軸ｓ
が空気流れ方向と平行になるように配置される。そし
て、このハブ部５の側面部５１には、空気を送る羽根
６’が突設される。羽根６’は、大略長方形状をした板
状のもので、ハブ部５の側面部５１より外側に向けて複
数枚が突設される。通常は、この複数枚の羽根６’はハ
ブ部５の側面部５１に均等に配置されて、ファン３’が
中心軸ｓ廻りに対称な形状となるように取付けられるも
のである。As shown in FIG. 7A, the fan is composed of a hub portion 5 located at the center of rotation and blades 6'protruding from the hub portion 5. The hub portion 5 is formed in a diagonal flow shape having a smaller diameter toward the upstream side, and the central axis s of the side surface portion 51 thereof.
Are arranged parallel to the air flow direction. Then, on the side surface portion 51 of the hub portion 5, blades 6'for sending air are provided in a protruding manner. The blade 6 ′ is a plate having a substantially rectangular shape, and a plurality of blades 6 are provided so as to project outward from the side surface portion 51 of the hub portion 5. Normally, the plurality of blades 6'are evenly arranged on the side surface portion 51 of the hub portion 5 and the fan 3'is attached so as to have a symmetrical shape around the central axis s.
【０００６】このようなヘアードライヤーは、小型で使
い易いものにするため、ケーシングを略筒状の細長い形
状に形成して必要な構成部品をコンパクトに収納するも
のである。そして、ファン３’は上述したように、上流
側ほど小径となる円錐側面状をした連結部に配置するも
ので、ファン３’のハブ部５もこれにほぼ沿うような斜
流型形状に形成するものである。このような細長いケー
シングに収納配置される構成部品は、小型でコンパクト
に形成されるもので、最低限の性能を達成するに過ぎな
いものである。構成部品の一つのファン３’も同様で、
連結部に配置するために斜流型形状としてコンパクトに
形成してあり、最低限の風量を達成するに過ぎないもの
であるが、より早く毛髪を乾燥させるために風量を増大
させて余裕を持たせることが望まれていた。In order to make such a hair dryer compact and easy to use, the casing is formed into a substantially cylindrical elongated shape to accommodate the necessary components compactly. As described above, the fan 3'is arranged in the conical connecting portion having a conical side surface whose diameter becomes smaller toward the upstream side, and the hub portion 5 of the fan 3'is also formed in a mixed flow shape substantially along the same. To do. The components housed in such an elongated casing are small and compact and only achieve a minimum performance. The same applies to the fan 3 ', which is one of the components.
It is compactly formed as a mixed flow type to be placed at the connecting part and only achieves the minimum air volume, but it has a margin by increasing the air volume in order to dry the hair faster. It was desired to let them do it.
【０００７】そこで、風量を増大させるため、斜流型形
状をしたハブ部５に突設する羽根６’の長さを図７
（ｂ）に示すように、ハブ部５に突設した羽根６’の上
流側端縁を延長することが考えられる。図７（ｂ）の
７”に羽根の延長した上流側端縁を示す。しかし、この
場合、羽根６’の長さを長くすることができるものの、
上流側端縁が延長されて隣接する羽根に近接するように
なるため、この羽根においては、上流側端縁が空気流路
を塞いで空気風量が逆に減少してしまうという問題点が
あった。Therefore, in order to increase the air volume, the length of the blades 6'protrudingly provided on the hub portion 5 having the mixed flow shape is shown in FIG.
As shown in (b), it is conceivable to extend the upstream end edge of the blade 6'protruding on the hub portion 5. 7 "of FIG. 7 (b) shows the extended upstream edge of the blade. However, in this case, although the length of the blade 6'can be increased,
Since the upstream edge is extended and comes close to the adjacent blade, there is a problem in this blade that the upstream edge blocks the air flow path and the air volume decreases conversely. .
【０００８】また、図示はしないが、羽根の数を増やす
ことも考えられるが、この場合、羽根の数を増やすこと
で空気流路が塞がれるため、空気流量は減少してしまう
ものであった。Although not shown, it is conceivable to increase the number of blades, but in this case, the air flow path is blocked by increasing the number of blades, so that the air flow rate decreases. It was
【０００９】また更に、ハブ部５は斜流型形状をしたも
のであり、この側面部に羽根６’を取り付ける場合、側
面部の下流側にはデッドスペースが生じてしまうもので
あった。Furthermore, the hub portion 5 has a mixed flow shape, and when the blades 6'are attached to the side surface portion, a dead space is generated on the downstream side of the side surface portion.
【００１０】また更に、羽根６’を等ピッチでハブ部５
に取付けると、ファン３’の回転に伴う回転騒音が大き
くなってしまう。これは、ファン３’の回転騒音は、フ
ァン回転数（ｒｐｍ）／６０×羽根枚数の周波数に現れ
るピーク騒音で、等ピッチで羽根６’を取り付けるとそ
のレベルが非常に大きなものとなるものであった。Furthermore, the blades 6'are arranged at equal pitches on the hub portion 5.
If it is attached to the fan, the rotation noise accompanying the rotation of the fan 3'will be increased. This is because the rotation noise of the fan 3'is a peak noise that appears at a frequency of the fan rotation speed (rpm) / 60 x the number of blades, and when the blades 6'are attached at an equal pitch, the level becomes very large. there were.
【００１１】[0011]
【発明が解決しようとする課題】本発明は上記の点に鑑
みてなされたものであり、その目的とするところは、上
流側ほど小径な斜流型形状をしたハブ部に羽根を取付け
て、効率良く空気を送り出して風量を増加でき、また、
回転騒音のピーク値のレベルを低減することができるヘ
アードライヤーを提供することを課題とするものであ
る。SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and it is an object of the present invention to attach blades to a hub portion having a mixed flow type having a smaller diameter on the upstream side, You can efficiently send air to increase the air volume, and
An object of the present invention is to provide a hair dryer that can reduce the level of peak value of rotational noise.
【００１２】[0012]
【課題を解決するための手段】上記課題を解決するため
に本発明に係るヘアードライヤーは、ケーシングの内部
に空気流路を形成して該空気流路の上流側端部に吸込口
を設けると共に下流側端部に吹出口を設け、空気流路内
にファンと該ファンを駆動するモータとを配置し、ファ
ンを上流側ほど小径な斜流型形状に形成してモータに連
結されるハブ部と該ハブ部より突設される複数の羽根と
で構成したヘアードライヤーにおいて、ハブ部に長さの
異なる複数種類の羽根を設けて成ることを特徴とするも
のである。このような構成とすることで、回転騒音のピ
ーク値のレベルを抑えることができるものでありなが
ら、効率良く風量増大を図ることが可能となる。In order to solve the above-mentioned problems, a hair dryer according to the present invention forms an air flow path inside a casing and provides a suction port at the upstream end of the air flow path. A hub portion in which a blower outlet is provided at a downstream end, a fan and a motor for driving the fan are arranged in an air flow path, and the fan is formed in a diagonal flow shape having a smaller diameter toward an upstream side and is connected to the motor. And a plurality of blades protruding from the hub portion, wherein the hub portion is provided with a plurality of types of blades having different lengths. With such a configuration, the level of the peak value of the rotational noise can be suppressed, but the air volume can be efficiently increased.
【００１３】また、長短二種類の長さの羽根をハブ部に
回転方向に交互に設けることが好ましい。このような構
成とすることで、長短二種類の羽根で効率良く空気を送
ることを可能とすることができる。Further, it is preferable that blades having two kinds of lengths, long and short, are alternately provided in the hub portion in the rotation direction. With such a configuration, it is possible to efficiently send air with two types of blades, long and short.
【００１４】また、短い方の羽根の空気流れ方向の中心
部を長い方の羽根の空気流れ方向の中心部よりも下流側
に設けることが好ましい。このような構成とすること
で、長短二種類の羽根でより一層効率良く空気を送るこ
とを可能とすることができる。Further, it is preferable to provide the center portion of the shorter blade in the air flow direction on the downstream side of the center portion of the longer blade in the air flow direction. With such a configuration, it is possible to more efficiently send air with two types of blades, long and short.
【００１５】また、ハブ部に取付ける複数の羽根を回転
方向に非等ピッチとすることが好ましい。このような構
成とすることで、回転騒音のピークのレベルを低減する
ことができる。Further, it is preferable that the plurality of blades attached to the hub portion have an unequal pitch in the rotation direction. With such a configuration, it is possible to reduce the peak level of rotational noise.
【００１６】また、長い方の羽根から該羽根の圧力面側
に隣接する短い方の羽根までのピッチよりも負圧面側に
隣接する短い方の羽根までのピッチを長くすることが好
ましい。このような構成とすることで、回転騒音のピー
クのレベルを低減することができるものでありながら、
長短二種類の羽根による仕事がより一層効率良くなり、
一層に風量増大を図ることができる。Further, it is preferable that the pitch from the longer blade to the shorter blade adjacent to the pressure surface side of the blade is longer than the pitch from the shorter blade adjacent to the suction surface side. With such a configuration, it is possible to reduce the peak level of rotation noise,
Work with two types of long and short blades becomes more efficient,
The air volume can be further increased.
【００１７】また、短い方の羽根の下流側端縁の前記中
心軸側の端部を通って前記中心軸を含む平面に対して前
記短い方の羽根の下流側端縁の前記中心軸と反対側の端
部が回転方向にずれていると共に、長い方の羽根の下流
側端縁のハブ部の中心軸側の端部を通って前記中心軸を
含む平面に対して前記長い方の羽根の下流側端縁の前記
中心軸と反対側の端部が回転方向と反対側にずれること
が好ましい。このような構成とすることで、空気が流れ
る領域を効率良く確保することができ、風量増大を図る
ことができる。Further, it is opposite to the central axis of the downstream side edge of the shorter blade with respect to the plane including the central axis, passing through the end on the central axis side of the downstream side edge of the shorter blade. The end of the longer blade is displaced in the rotational direction, and the end of the longer blade passes through the end on the central axis side of the hub portion of the downstream edge of the longer blade with respect to the plane including the central axis. It is preferable that an end of the downstream side edge opposite to the central axis is displaced to the side opposite to the rotation direction. With such a configuration, it is possible to efficiently secure the region where the air flows and increase the air volume.
【００１８】[0018]
【発明の実施の形態】以下、本発明を添付図面に示す実
施形態に基づいて説明する。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below based on the embodiments shown in the accompanying drawings.
【００１９】本実施形態におけるヘアードライヤーは、
図５に示すように、機器が収納されるケーシング１にて
本体部が形成される。The hair dryer in this embodiment is
As shown in FIG. 5, the main body is formed by the casing 1 in which the device is stored.
【００２０】ケーシング１は、上流側ケーシング部１２
と、下流側ケーシング部１１と、上流側ケーシング部１
２と下流側ケーシング部１１とを連結する連結部１３と
からなる。上流側ケーシング部１２は細長い略有底筒状
をしたもので、下流側ケーシング部１１は細長く上流側
ケーシング部１２より大径の大略有底筒状をしたもの
で、これらは開口側端部同士が連結部１３を介して連結
される。連結部１３は、円錐台の側面状に形成されるも
ので、小径側が上流側ケーシング部１２に接続されると
共に大径側が下流側ケーシング部１１に接続される。The casing 1 has an upstream casing portion 12
And the downstream casing part 11 and the upstream casing part 1
2 and a downstream side casing part 11 are connected to each other. The upstream casing portion 12 has a long and thin bottomed tubular shape, and the downstream side casing portion 11 has a long and slender and substantially larger diameter than the upstream casing portion 12 and has a substantially bottomed tubular shape. Are connected via the connecting portion 13. The connecting portion 13 is formed in a side surface of a truncated cone, and the small diameter side is connected to the upstream casing portion 12 and the large diameter side is connected to the downstream casing portion 11.
【００２１】このようなケーシング１の内部には空気流
路２が形成され、空気流路２の上流側端部（即ち上流側
ケーシング部１２の連結部１３と反対側の端部）と下流
側端部（即ち下流側ケーシング部１１の連結部１３と反
対側の端部）とにはそれぞれ、空気をケーシング１内に
吸い込む吸込口２１とケーシング１外へ吹き出す吹出口
２２とが形成される。An air passage 2 is formed inside the casing 1 as described above, and an upstream end portion of the air passage 2 (that is, an end portion of the upstream casing portion 12 opposite to the connecting portion 13) and a downstream end portion thereof are formed. A suction port 21 that sucks air into the casing 1 and a blowout port 22 that blows air out of the casing 1 are formed at the end portion (that is, the end portion of the downstream side casing portion 11 opposite to the connecting portion 13).
【００２２】ケーシング１の内部に形成される空気流路
２には、空気を上流側から下流側へと送るためのファン
３と、ファン３を駆動するためのモータ４１と、モータ
４１を保持すると共に空気の流れを整流する整流翼４２
と、空気を加温するためのヒータ部４３とが配設され
る。ファン３は連結部１３内に、モータ４１と整流翼４
２とヒータ部４３は下流側ケーシング部１１内にそれぞ
れ配設され、ヘアードライヤー使用時に把持部となる上
流側ケーシング部１２には、モータ４１やヒータ部４３
への通電の入り切りを行うスイッチ部４５が設けてあ
る。The air passage 2 formed inside the casing 1 holds a fan 3 for sending air from the upstream side to the downstream side, a motor 41 for driving the fan 3, and a motor 41. Rectifying blade 42 for rectifying the flow of air together with
And a heater section 43 for heating the air. The fan 3 has a motor 41 and a rectifying blade 4 in the connecting portion 13.
2 and the heater portion 43 are respectively arranged in the downstream casing portion 11, and the motor 41 and the heater portion 43 are provided in the upstream casing portion 12 which serves as a grip portion when the hair dryer is used.
There is provided a switch unit 45 for turning on and off electricity to and from.
【００２３】また、下流側ケーシング部１１に形成した
吹出口２２の外面側には、ブラシ部４４が設けてあり、
吹出口２２より吹き出される温風によって毛髪を乾燥さ
せるだけでなく、整髪も同時に行うことができるもので
ある。A brush portion 44 is provided on the outer surface side of the outlet 22 formed in the downstream casing portion 11,
Not only can the hair be dried by the warm air blown out from the air outlet 22, but also the hair can be adjusted at the same time.
【００２４】このようなヘアードライヤーを使用するに
は、下流側ケーシング部１１を掴んでスイッチ部４５を
入り状態にし、モータ４１を駆動してファン３を回転さ
せると共にヒータ部４３にて空気を加温して、吸込口２
１より吸い込んだ空気を加温して吹出口２２より吹き出
して毛髪に吹き付けて毛髪の乾燥や整髪を行うものであ
る。In order to use such a hair dryer, the downstream casing 11 is grasped and the switch 45 is turned on, the motor 41 is driven to rotate the fan 3, and the heater 43 applies air. Warm up the suction port 2
The air sucked from 1 is heated, blown out from the blowout port 22 and blown onto the hair to dry and condition the hair.
【００２５】連結部１３内に配設されるファン３は、図
１乃至図３に示すように、回転の中心部に位置するハブ
部５と、ハブ部５より突設される羽根６とで構成され
る。As shown in FIGS. 1 to 3, the fan 3 disposed in the connecting portion 13 includes a hub portion 5 located at the center of rotation and blades 6 protruding from the hub portion 5. Composed.
【００２６】ハブ部５は、上流側ｕほど小径な斜流型形
状に形成するもので、斜流型形状をした側面部５１と軸
連結部（特に図示せず）とからなる合成樹脂等で形成さ
れるものである。斜流型形状をした側面部５１の中心軸
ｓに沿ってこの側面部５１より筒状部材のような軸連結
部を設け、軸連結部にモータ４１の回転軸（特に図示せ
ず）を嵌入したりして連結し、モータ４１の回転軸を回
転させてファン３を回転させるものである。このハブ部
５は、側面部５１の小径側が上流側ｕ，大径側が下流側
ｌとなるように側面部５１の中心軸ｓが空気流れ方向ｘ
と平行になるように配置される。そして、このハブ部５
の側面部５１には、空気を送る羽根６が突設される。The hub portion 5 is formed in a diagonal flow shape having a smaller diameter toward the upstream side u, and is made of a synthetic resin or the like composed of a side surface portion 51 having a diagonal flow shape and a shaft connecting portion (not shown). It is what is formed. A shaft connecting portion such as a tubular member is provided from the side surface portion 51 along the central axis s of the side surface portion 51 having a mixed flow shape, and a rotary shaft (not shown) of the motor 41 is fitted into the shaft connecting portion. The fan 3 is rotated by rotating the rotation shaft of the motor 41. In the hub portion 5, the central axis s of the side surface portion 51 is the air flow direction x such that the small diameter side of the side surface portion 51 is the upstream side u and the large diameter side is the downstream side l.
It is arranged to be parallel to. And this hub part 5
On the side surface portion 51, a blade 6 for sending air is provided in a protruding manner.
【００２７】羽根６は、大略長方形状をした板状のもの
で、ハブ部５の側面部５１より外側に向けて複数枚が突
設される。そして、後述するが、本実施形態においては
長短２種類の羽根６を取付けるものである。The blade 6 is a plate having a substantially rectangular shape, and a plurality of blades are provided so as to project outward from the side surface portion 51 of the hub portion 5. Then, as will be described later, in the present embodiment, two types of blades 6, long and short, are attached.
【００２８】ハブ部５の側面部５１に取付けられる大略
長方形状の羽根６の周端縁は、上流側ｕの端縁である前
縁７と、ハブ部５の半径方向イの外側の端縁である外縁
８と、下流側ｌの端縁である後縁９とで形成される。The peripheral end edges of the substantially rectangular blades 6 attached to the side surface portion 51 of the hub portion 5 are the front edge 7 which is the edge of the upstream side u and the outer edge of the hub portion 5 in the radial direction a. And the trailing edge 9 which is the edge on the downstream side l.
【００２９】羽根６は、ハブ部５とともに回転して空気
を上流側ｕより下流側ｌへと送るため、図２に示すよう
に、即ちハブ部５の中心軸ｓと直交する方向から見て、
空気流れ方向ｘの上流側ｕ（即ち前縁７側）ほどハブ部
５の回転方向ロ側に、下流側ｌ（即ち後縁９側）ほどハ
ブ部５の回転方向ロと反対側に傾斜するように取付けら
れる。Since the blades 6 rotate together with the hub portion 5 to send air from the upstream side u to the downstream side l, as shown in FIG. 2, that is, when viewed from a direction orthogonal to the central axis s of the hub portion 5. ,
The upstream side u (that is, the front edge 7 side) in the air flow direction x is inclined toward the rotation direction b of the hub portion 5, and the downstream side 1 (that is, the rear edge 9 side) is inclined toward the opposite side to the rotation direction b of the hub portion 5. Mounted as.
【００３０】そして、本実施形態においては、このよう
な羽根６は短い方の羽根６ａと長い方の羽根６ｂの二種
類の長さの羽根６を取付けるもので、特に交互に取り付
けてある。In the present embodiment, such blades 6 are provided with blades 6 having two kinds of lengths, that is, a shorter blade 6a and a longer blade 6b, and are particularly alternately mounted.
【００３１】長短二種類の羽根６は、図２に示すよう
に、短い方の羽根６ａの空気流れ方向ｘの中心部を長い
方の羽根６ｂの空気流れ方向ｘの中心部よりも下流側ｌ
に設け、短い方の羽根６ａの後縁９ａと長い方の羽根６
ｂの後縁９ｂとがほぼ空気流れ方向ｘの同一位置になる
ように配置してある。As shown in FIG. 2, the long and short blades 6 are arranged such that the center of the shorter blade 6a in the air flow direction x is located at the downstream side 1 of the center of the longer blade 6b in the air flow direction x.
The trailing edge 9a of the shorter blade 6a and the longer blade 6a.
The rear edge 9b of b is arranged at substantially the same position in the air flow direction x.
【００３２】また、短い方の羽根６ａの後縁９ａの前記
中心軸ｓ側の端部９２ａを通って前記中心軸ｓを含む平
面Ｐ1に対して前記短い方の羽根６ａの後縁９ａの前記
中心軸と反対側の端部９１ａが回転方向ロにずれている
と共に、長い方の羽根６ｂの後縁９ｂの中心軸ｓ側の端
部９２ｂを通って前記中心軸ｓを含む平面Ｐ2に対して
前記長い方の羽根６ｂの後縁９ｂの前記中心軸ｓと反対
側の端部９１ｂが回転方向ロと反対側にずれている。こ
のようにすることで、それぞれの羽根６即ち、短い方の
羽根６ａと長い方の羽根６ｂとが空気をかき込む領域を
効率良く確保することができ、風量増大を図ることがで
きる。The trailing edge 9a of the shorter blade 6a passes through the end portion 92a of the trailing edge 9a of the shorter blade 6a on the side of the central axis s with respect to the plane P 1 including the central axis s. The end portion 91a on the side opposite to the center axis is displaced in the rotation direction (b), and passes through the end portion 92b on the center axis s side of the trailing edge 9b of the longer blade 6b, and the plane P 2 including the center axis s. On the other hand, the end 91b of the trailing edge 9b of the longer blade 6b, which is opposite to the central axis s, is displaced to the side opposite to the rotational direction B. By doing so, the respective blades 6, that is, the shorter blades 6a and the longer blades 6b can efficiently secure a region in which air is scraped, and the air volume can be increased.
【００３３】また、このような短い方の羽根６ａと長い
方の羽根６ｂは、図３（ａ）に示すように、長い方の羽
根６ｂから該羽根６ｂの圧力面６２側に隣接する短い方
の羽根６ａまでのピッチθ2よりも負圧面６１側に隣接
する短い方の羽根６ａまでのピッチθ1を長くしてあ
り、これについて以下に説明する。As shown in FIG. 3A, the shorter blade 6a and the longer blade 6b are adjacent to the shorter blade 6b on the pressure surface 62 side of the blade 6b. The pitch θ 1 to the shorter blade 6a adjacent to the suction surface 61 side is made longer than the pitch θ 2 to the blade 6a, which will be described below.
【００３４】長い方の羽根６ｂの圧力面６２側に隣接す
る短い方の羽根６ａまでのピッチθ 2と圧力面６２側に
隣接する短い方の羽根６ａまでのピッチθ1を異ならせ
る際、図３（ａ）に示す本実施形態のようにθ1＞θ2と
する場合、図４（ａ）のように短い方の羽根６ａの前縁
７ａからの剥離流れｆｎが発生するが長い方の羽根６ｂ
も十分仕事ができるものである。これに対して、図３
（ｂ）に示すようにθ1＜θ2とする場合、図４（ｂ）の
ように長い方の羽根６ｂの前縁７ｂからの剥離流れｆｎ
が発生すると短い方の羽根６ａが十分仕事ができないも
のである。Adjacent to the pressure surface 62 side of the longer blade 6b.
Pitch θ to the shorter blade 6a 2And on the pressure side 62 side
Pitch θ to adjacent shorter blade 6a1Different
At the time of rotation, as in this embodiment shown in FIG.1> Θ2When
The front edge of the shorter blade 6a as shown in Fig. 4 (a)
Separated flow fn from 7a is generated, but the longer blade 6b
Is also good enough to work. On the other hand, FIG.
Θ as shown in (b)1<Θ2In case of
Flow fn from the leading edge 7b of the longer blade 6b
Occurs, the shorter blade 6a cannot work sufficiently
Of.
【００３５】このように羽根６を取付けたファン３の回
転騒音を図６（ａ）に示す。図６（ｂ）には、従来のフ
ァンで、５枚の羽根を等ピッチで取付けたものの回転騒
音を示す。本発明の図６（ａ）は、合計６枚の羽根６を
長短二種類の羽根６で構成し、ピッチを変えてあること
で、回転騒音のピークのレベルが低減されているのが分
かる。The rotation noise of the fan 3 having the blades 6 attached in this manner is shown in FIG. 6 (a). FIG. 6 (b) shows the rotation noise of a conventional fan in which five blades are attached at equal pitches. In FIG. 6A of the present invention, it can be seen that the peak level of the rotational noise is reduced by configuring the total of six blades 6 with two types of long and short blades 6 and changing the pitch.
【００３６】以上のような構成とすることで、長短二種
類の羽根６をピッチを変えて取付けたことで、回転騒音
のピーク値のレベルを抑えることができるものでありな
がら、効率良く風量増大を図ることが可能となる。With the above-mentioned structure, by installing the long and short blades 6 at different pitches, it is possible to suppress the peak value level of rotational noise and to efficiently increase the air volume. Can be achieved.
【００３７】[0037]
【発明の効果】上記のように本発明の請求項１記載の発
明にあっては、ケーシングの内部に空気流路を形成して
該空気流路の上流側端部に吸込口を設けると共に下流側
端部に吹出口を設け、空気流路内にファンと該ファンを
駆動するモータとを配置し、ファンを上流側ほど小径な
斜流型形状に形成してモータに連結されるハブ部と該ハ
ブ部より突設される複数の羽根とで構成したヘアードラ
イヤーにおいて、ハブ部に長さの異なる複数種類の羽根
を設けるので、回転騒音のピーク値のレベルを抑えるこ
とができるものでありながら、効率良く風量増大を図る
ことが可能となる。As described above, according to the first aspect of the present invention, the air passage is formed inside the casing, and the suction port is provided at the upstream end of the air passage and the downstream portion is provided. A blower outlet is provided at a side end, a fan and a motor for driving the fan are arranged in the air flow path, and the fan is formed in a mixed flow shape having a smaller diameter toward the upstream side, and a hub portion connected to the motor. In the hair dryer configured with a plurality of blades protruding from the hub portion, the hub portion is provided with a plurality of types of blades having different lengths, so that the level of the peak value of the rotational noise can be suppressed. Therefore, it becomes possible to efficiently increase the air volume.
【００３８】また請求項２記載の発明にあっては、上記
請求項１記載の発明の効果に加えて、長短二種類の長さ
の羽根をハブ部に回転方向に交互に設けるので、長短二
種類の羽根で効率良く空気を送ることを可能とすること
ができる。In addition to the effect of the invention described in claim 1, in the invention described in claim 2, in addition to the effect of the invention described in claim 1, blades having two kinds of lengths, long and short, are alternately provided in the hub portion in the rotation direction. It is possible to efficiently send air by using various kinds of blades.
【００３９】また請求項３記載の発明にあっては、上記
請求項２記載の発明の効果に加えて、短い方の羽根の空
気流れ方向の中心部を長い方の羽根の空気流れ方向の中
心部よりも下流側に設けるので、長短二種類の羽根でよ
り一層効率良く空気を送ることを可能とすることができ
る。According to the invention of claim 3, in addition to the effect of the invention of claim 2, the center of the shorter blade in the air flow direction is the center of the longer blade in the air flow direction. Since it is provided on the downstream side of the section, it is possible to more efficiently send air with two types of blades, long and short.
【００４０】また請求項４記載の発明にあっては、上記
請求項１乃至３のいずれかに記載の発明の効果に加え
て、ハブ部に取付ける複数の羽根を回転方向に非等ピッ
チとするので、回転騒音のピークのレベルを低減するこ
とができる。Further, in the invention described in claim 4, in addition to the effect of the invention described in any one of claims 1 to 3, the plurality of blades attached to the hub portion are made to have an unequal pitch in the rotational direction. Therefore, the peak level of rotation noise can be reduced.
【００４１】また請求項５記載の発明にあっては、上記
請求項２乃至４のいずれかに記載の発明の効果に加え
て、長い方の羽根から該羽根の圧力面側に隣接する短い
方の羽根までのピッチよりも負圧面側に隣接する短い方
の羽根までのピッチを長くするので、回転騒音のピーク
のレベルを低減することができるものでありながら、長
短二種類の羽根による仕事がより一層効率良くなり、一
層に風量増大を図ることができる。According to the invention of claim 5, in addition to the effect of the invention of any one of claims 2 to 4, the longer blade is adjacent to the pressure surface side of the shorter blade. Since the pitch to the shorter blade adjacent to the suction surface side is longer than the pitch to the blade of, the peak level of rotation noise can be reduced, but the work of two types of long and short blades The efficiency can be further improved, and the air volume can be further increased.
【００４２】また請求項６記載の発明にあっては、上記
請求項２乃至５のいずれかに記載の発明の効果に加え
て、短い方の羽根の下流側端縁の前記中心軸側の端部を
通って前記中心軸を含む平面に対して前記短い方の羽根
の下流側端縁の前記中心軸と反対側の端部が回転方向に
ずれていると共に、長い方の羽根の下流側端縁のハブ部
の中心軸側の端部を通って前記中心軸を含む平面に対し
て前記長い方の羽根の下流側端縁の前記中心軸と反対側
の端部が回転方向と反対側にずれているので、空気が流
れる領域を効率良く確保することができ、風量増大を図
ることができる。According to the invention of claim 6, in addition to the effect of the invention of any one of claims 2 to 5, in addition to the end on the central axis side of the downstream side edge of the shorter blade. The end of the downstream side edge of the shorter blade opposite to the center axis with respect to the plane including the central axis is shifted in the rotational direction, and the downstream side end of the longer blade is passed through The end of the downstream side edge of the longer blade with respect to the plane including the central axis passing through the end of the edge hub portion on the central axis side is opposite to the rotation direction. Since they are deviated from each other, it is possible to efficiently secure a region in which the air flows and increase the air volume.
【図１】本発明の一実施形態のファンを示し、（ａ）は
正面図であり、（ｂ）は背面図である。FIG. 1 shows a fan according to an embodiment of the present invention, in which (a) is a front view and (b) is a rear view.
【図２】同上のファンを示し、（ａ）は背面方向からみ
た斜視図であり、（ｂ）は正面方向からみた斜視図であ
る。2A and 2B show the above fan, FIG. 2A is a perspective view seen from a rear direction, and FIG. 2B is a perspective view seen from a front direction.
【図３】ハブ部に取付ける羽根の取付け方による相違を
説明する図であり、（ａ）は長い方の羽根の圧力面側に
隣接して短い方の羽根を取付ける場合を説明する説明図
であり、（ｂ）は長い方の羽根の負圧面側に隣接して短
い方の羽根を取付ける場合を説明する説明図である。FIG. 3 is a diagram for explaining a difference depending on how to attach a blade attached to a hub portion, and FIG. 3A is an explanatory diagram for explaining a case where a shorter blade is attached adjacent to a pressure surface side of a longer blade. FIG. 3B is an explanatory diagram for explaining a case where the shorter blade is attached adjacent to the suction surface side of the longer blade.
【図４】（ａ）は長い方の羽根の圧力面側に隣接して短
い方の羽根を取付ける場合の剥離流れを説明する説明図
であり、（ｂ）は長い方の羽根の負圧面側に隣接して短
い方の羽根を取付ける場合の剥離流れを説明する説明図
である。FIG. 4A is an explanatory diagram for explaining a separation flow when the shorter blade is attached adjacent to the pressure surface side of the longer blade, and FIG. 4B is the suction surface side of the longer blade. FIG. 6 is an explanatory view for explaining a separation flow when a shorter blade is attached adjacent to the.
【図５】同上のヘアードライヤーを示し、（ａ）は外観
図であり、（ｂ）は断面図である。FIG. 5 shows the above hair dryer, wherein (a) is an external view and (b) is a cross-sectional view.
【図６】ファンの回転騒音の周波数ごとのレベル値を示
す図であり、（ａ）は本実施形態の周波数ごとのレベル
値であり、（ｂ）は従来例の周波数ごとのレベル値を示
す図である。6A and 6B are diagrams showing the level value of the rotation noise of the fan for each frequency, FIG. 6A shows the level value for each frequency of the present embodiment, and FIG. 6B shows the level value for each frequency of the conventional example. It is a figure.
【図７】従来例を示し、（ａ）は斜視図であり、（ｂ）
は正面図である。FIG. 7 shows a conventional example, (a) is a perspective view, and (b) is a perspective view.
Is a front view.
１ ケーシング ２ 空気流路 ２１ 吸込口 ２２ 吹出口 ３ ファン ４１ モータ ５ ハブ部 ６ 羽根 1 casing 2 Air flow path 21 Suction port 22 Outlet 3 fans 41 motor 5 Hub section 6 feathers
Claims (6)
該空気流路の上流側端部に吸込口を設けると共に下流側
端部に吹出口を設け、空気流路内にファンと該ファンを
駆動するモータとを配置し、ファンを上流側ほど小径な
斜流型形状に形成してモータに連結されるハブ部と該ハ
ブ部より突設される複数の羽根とで構成したヘアードラ
イヤーにおいて、ハブ部に長さの異なる複数種類の羽根
を設けて成ることを特徴とするヘアードライヤー。1. A fan and the fan are provided in an air flow path, wherein an air flow path is formed inside a casing, an inlet is provided at an upstream end of the air flow path, and an air outlet is provided at a downstream end. A hair dryer having a hub part connected to the motor and a plurality of blades projecting from the hub part. A hair dryer characterized in that a hub portion is provided with a plurality of types of blades having different lengths.
方向に交互に設けて成ることを特徴とする請求項１記載
のヘアードライヤー。2. The hair dryer according to claim 1, wherein blades having two types of length, long and short, are alternately provided on the hub portion in the rotational direction.
長い方の羽根の空気流れ方向の中心部よりも下流側に設
けて成ることを特徴とする請求項２記載のヘアードライ
ヤー。3. The hair dryer according to claim 2, wherein the center portion of the shorter blade in the air flow direction is provided downstream of the center portion of the longer blade in the air flow direction.
に非等ピッチとして成ることを特徴とする請求項１乃至
３のいずれかに記載のヘアードライヤー。4. The hair dryer according to claim 1, wherein the plurality of blades attached to the hub portion have an unequal pitch in the rotation direction.
接する短い方の羽根までのピッチよりも負圧面側に隣接
する短い方の羽根までのピッチを長くすることを特徴と
する請求項２乃至４のいずれかに記載のヘアードライヤ
ー。5. The pitch from the longer blade to the shorter blade adjacent to the pressure surface side of the blade is longer than the pitch from the shorter blade adjacent to the suction surface side. Item 5. The hair dryer according to any one of items 2 to 4.
側の端部を通って前記中心軸を含む平面に対して前記短
い方の羽根の下流側端縁の前記中心軸と反対側の端部が
回転方向にずれていると共に、長い方の羽根の下流側端
縁のハブ部の中心軸側の端部を通って前記中心軸を含む
平面に対して前記長い方の羽根の下流側端縁の前記中心
軸と反対側の端部が回転方向と反対側にずれて成ること
を特徴とする請求項２乃至５のいずれかに記載のヘアー
ドライヤー。6. The center axis of the downstream side edge of the shorter blade with respect to the plane including the center axis passing through the end on the side of the center axis of the downstream side edge of the shorter blade. The end of the longer blade is displaced in the rotational direction, and the end of the longer blade passes through the end on the central axis side of the hub portion of the downstream edge of the longer blade with respect to the plane including the central axis. The hair dryer according to any one of claims 2 to 5, wherein an end of the downstream side edge opposite to the central axis is displaced in a direction opposite to the rotation direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001291755A JP3959995B2 (en) | 2001-09-25 | 2001-09-25 | Hair dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001291755A JP3959995B2 (en) | 2001-09-25 | 2001-09-25 | Hair dryer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003093138A true JP2003093138A (en) | 2003-04-02 |
| JP3959995B2 JP3959995B2 (en) | 2007-08-15 |
Family
ID=19113848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001291755A Expired - Fee Related JP3959995B2 (en) | 2001-09-25 | 2001-09-25 | Hair dryer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3959995B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006077632A (en) * | 2004-09-08 | 2006-03-23 | Matsushita Electric Ind Co Ltd | Blower impeller for air conditioning |
| JP2006090178A (en) * | 2004-09-22 | 2006-04-06 | Matsushita Electric Ind Co Ltd | Blower impeller |
| EP1692962A1 (en) * | 2005-02-18 | 2006-08-23 | Faco S.A. | Hair dryer with improved acoustic confort |
| JP2009522492A (en) * | 2005-12-29 | 2009-06-11 | ミネベア株式会社 | Reduction of noise of cooling fans using splitter blades |
| CN108425882A (en) * | 2018-05-31 | 2018-08-21 | 陈靖 | A kind of electric hair dryer fan blade |
| CN110219833A (en) * | 2019-06-13 | 2019-09-10 | 陈光喜 | A kind of hair dryer noise-reducing structure and the handle with the noise-reducing structure |
-
2001
- 2001-09-25 JP JP2001291755A patent/JP3959995B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006077632A (en) * | 2004-09-08 | 2006-03-23 | Matsushita Electric Ind Co Ltd | 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 |
| JP2006090178A (en) * | 2004-09-22 | 2006-04-06 | Matsushita Electric Ind Co Ltd | Blower impeller |
| JP4529613B2 (en) * | 2004-09-22 | 2010-08-25 | パナソニック株式会社 | Blower impeller |
| EP1692962A1 (en) * | 2005-02-18 | 2006-08-23 | Faco S.A. | Hair dryer with improved acoustic confort |
| JP2009522492A (en) * | 2005-12-29 | 2009-06-11 | ミネベア株式会社 | Reduction of noise of cooling fans using splitter blades |
| CN108425882A (en) * | 2018-05-31 | 2018-08-21 | 陈靖 | A kind of electric hair dryer fan blade |
| CN110219833A (en) * | 2019-06-13 | 2019-09-10 | 陈光喜 | A kind of hair dryer noise-reducing structure and the handle with the noise-reducing structure |
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| Publication number | Publication date |
|---|---|
| JP3959995B2 (en) | 2007-08-15 |
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