JP2008309057A - Electric blower - Google Patents

Electric blower Download PDF

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JP2008309057A
JP2008309057A JP2007157203A JP2007157203A JP2008309057A JP 2008309057 A JP2008309057 A JP 2008309057A JP 2007157203 A JP2007157203 A JP 2007157203A JP 2007157203 A JP2007157203 A JP 2007157203A JP 2008309057 A JP2008309057 A JP 2008309057A
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fan
electric blower
centrifugal fan
plate
centrifugal
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JP2007157203A
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JP5091552B2 (en
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Fumikiyo Nakazawa
文清 中澤
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Toshiba Corp
Toshiba Lifestyle Products and Services Corp
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Toshiba Corp
Toshiba Consumer Electronics Holdings Corp
Toshiba Home Appliances Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive electric blower having a simple structure that can be miniaturized, with reduced noise, a large blowing capacity, high performance, and a wide performance specification range. <P>SOLUTION: This electric blower is equipped with: a centrifugal fan mounted on an output shaft of a motor and provided with a plurality of fan blades between fan plates; a fan cover for air-tightly covering the centrifugal fan; and a straightening vane for guiding exhaust wind of the centrifugal fan into an electric part and having a diffuser effect. A ring-like intermediate plate is provided between the fan plates, and the plurality of fan blades are provided between the intermediate plate and the fan plates to form multi layers in the axial direction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は電動送風機に係り、特に掃除機等に使用するのに適し、多層構造の遠心ファンを備えた電動送風機に関する。   The present invention relates to an electric blower, and more particularly to an electric blower that is suitable for use in a vacuum cleaner or the like and includes a multi-layer centrifugal fan.

一般に掃除機に使用する電動送風機は、モータとこのモータにより回転される遠心ファンからなり、遠心ファンには、遠心型が用いられ、遠心ファンから排出された空気を整流するディフューザを備える。   Generally, an electric blower used for a vacuum cleaner includes a motor and a centrifugal fan rotated by the motor. The centrifugal fan is a centrifugal type and includes a diffuser that rectifies air discharged from the centrifugal fan.

図９に示すように、従来の電動送風機４１は電動部４２の出力軸４３に遠心ファン４４を取付け、この遠心ファン４４をファンカバー４５で気密に被う。遠心ファン４４は上下円盤状のプレート４６とこのプレート４６に固定されたブレード４７から構成され、遠心ファン４４を回転させ、この遠心ファン４４の中心に設けた空気吸込口４８から空気を吸い込み、ファン外周に排出させ、送風を行う。   As shown in FIG. 9, a conventional electric blower 41 has a centrifugal fan 44 attached to an output shaft 43 of an electric part 42, and this centrifugal fan 44 is covered with a fan cover 45 in an airtight manner. The centrifugal fan 44 is composed of an upper and lower disk-shaped plate 46 and a blade 47 fixed to the plate 46. The centrifugal fan 44 is rotated, and air is sucked from an air suction port 48 provided at the center of the centrifugal fan 44. It is discharged to the outer periphery and blown.

また、電動部４２とファンカバー４５間には、遠心ファン４４からの排気風を電動部４２の内部に案内する整流板４９が配置され、ファンカバー４５の電動部ケースフランジ部５０への圧入により、整流板４９は固定される。   A rectifying plate 49 for guiding the exhaust air from the centrifugal fan 44 to the inside of the electric part 42 is disposed between the electric part 42 and the fan cover 45, and the fan cover 45 is press-fitted into the electric part case flange part 50. The rectifying plate 49 is fixed.

このような構造を有する従来の電動送風機４１は、ブレード４７の材厚を薄くする、あるいは遠心ファン４４の排出口５１を高くするには遠心ファン４４の剛性低下を招くため、高さには限界があり、電動送風機の性能向上、電動送風機としての性能仕様範囲を広げることができず、さらに、遠心ファン４４と整流板上部ブレード５２との風切音による騒音が発生する問題があった。   In the conventional electric blower 41 having such a structure, in order to reduce the material thickness of the blade 47 or to increase the discharge port 51 of the centrifugal fan 44, the rigidity of the centrifugal fan 44 is reduced. However, the performance of the electric blower cannot be improved and the performance specification range as the electric blower cannot be expanded. Further, there is a problem that noise due to wind noise between the centrifugal fan 44 and the rectifying plate upper blade 52 is generated.

なお、吸込用回転ファンと背中合わせに、冷却用回転ファンを設け、さらにファン部分と、固定子及び、回転子部分とを仕切るように取り付けられたエアガイドを設け、電動送風機の低騒音化、電動機部の冷却性能を図る電動送風機が提案されている（例えば、特許文献１参照）。しかしながら、特許文献１に記載の電動送風きは、各々独立した遠心ファンである吸込用回転ファンと冷却用回転ファンを、離間した状態で背中合わせに回転軸に取付けるため、ファンブレードが取付けられるファンプレートの数が４枚必要であり、高価になり、さらに、両ファンを離間して設けるので、小型化ができない。
特開２００２−３１０９０号公報 A cooling rotary fan is provided back-to-back with the suction rotary fan, and an air guide is provided so as to partition the fan part, the stator, and the rotor part. There has been proposed an electric blower that achieves cooling performance of a part (see, for example, Patent Document 1). However, in the electric blower described in Patent Document 1, the suction rotary fan and the cooling rotary fan, which are independent centrifugal fans, are attached to the rotary shaft back to back in a separated state. 4 is necessary and expensive, and the fans are separated from each other, so that the size cannot be reduced.
JP 2002-31090 A

本発明は上述した事情を考慮してなされたもので、構造が簡単、小型化が可能で安価、かつ低騒音で、大送風容量、高性能、性能仕様範囲を広げた電動送風機を提供することを目的とする。   The present invention has been made in consideration of the above-described circumstances, and provides an electric blower that has a simple structure, can be downsized, is inexpensive, has low noise, has a large blowing capacity, high performance, and has a wide performance specification range. With the goal.

上述した目的を達成するため、本発明に係る電動送風機は、電動機出力軸に取付けられ、ファンプレート間に複数のファンブレードを設けてなる遠心ファンと、この遠心ファンを気密的に被うファンカバーと、前記遠心ファンの排気風を電動部内部に案内すると共にディフューザ効果を持たせた整流板とを備えた電動送風機において、前記ファンプレートは、上流側ファンプレートと下流側ファンプレートの間に輪状の中間ファンプレートを有し、各プレートと間に各々複数のファンブレードを設けて、軸方向に多層にすることを特徴とする。   In order to achieve the above object, an electric blower according to the present invention includes a centrifugal fan attached to an electric motor output shaft and provided with a plurality of fan blades between fan plates, and a fan cover that covers the centrifugal fan in an airtight manner. And an electric blower that guides the exhaust air of the centrifugal fan into the electric part and has a rectifying plate having a diffuser effect, wherein the fan plate is annular between the upstream fan plate and the downstream fan plate. The intermediate fan plate is provided, and a plurality of fan blades are provided between each plate so as to be multilayered in the axial direction.

本発明に係る電動送風機によれば、構造が簡単、小型化が可能で安価、かつ低騒音で、大送風容量、高性能、性能仕様範囲を広げた電動送風機を提供することができる。   The electric blower according to the present invention can provide an electric blower that has a simple structure, can be miniaturized, is inexpensive, has low noise, has a large blowing capacity, high performance, and a wide performance specification range.

本発明の第１実施形態に係る電動送風機を図面を参照して説明する。   An electric blower according to a first embodiment of the present invention will be described with reference to the drawings.

図１は本発明の第１実施形態に係る電動送風機の半断面図である。   FIG. 1 is a half sectional view of the electric blower according to the first embodiment of the present invention.

図１に示すように、本第１実施形態に係る電動送風機１は、金属製の遠心ファン２と、この遠心ファン２を回転軸３を介して回転させるモータ４と、これらを収納するケース５とで構成される。   As shown in FIG. 1, the electric blower 1 according to the first embodiment includes a metal centrifugal fan 2, a motor 4 that rotates the centrifugal fan 2 via a rotating shaft 3, and a case 5 that houses these. It consists of.

このケース５は、遠心ファン２を覆い、上部中央に吸込開口部６ａを設けたファンカバー６と、モータ４を収納するモータケース７とから構成される。   The case 5 includes a fan cover 6 that covers the centrifugal fan 2 and is provided with a suction opening 6a in the upper center, and a motor case 7 that houses the motor 4.

モータ４は例えば、ブラシ付きモータを用い、モータケース７は、後板部１１による有底状構造でファンカバー６側が開口部１２として開口し、モータ４を収納する。   For example, a motor with a brush is used as the motor 4, and the motor case 7 has a bottomed structure formed by the rear plate portion 11, and the fan cover 6 side is opened as the opening portion 12 to store the motor 4.

また、モータケース７の軸方向の後面側の後板部１１の中央部が後方に向けて略円筒状に突出し、内側にベアリング１３ａを収容するベアリング収納部１３ｂが設けられる。   Further, the central portion of the rear plate portion 11 on the rear side in the axial direction of the motor case 7 protrudes rearward in a substantially cylindrical shape, and a bearing housing portion 13b for housing the bearing 13a is provided inside.

このモータケース７の開口部１２側を閉塞するように、フレーム８がモータケース７に、回転軸３に垂直になるように、ネジ等により取り付けられる。   The frame 8 is attached to the motor case 7 with screws or the like so as to be perpendicular to the rotating shaft 3 so as to close the opening 12 side of the motor case 7.

このフレーム８は、モータケース７よりも外周が大きい円盤形状で、ファンカバー６の外周側下端部に連結される。このフレーム８によりファンカバー６とモータケース７とが一体化され、電動送風機１のケース５が形成される。   The frame 8 has a disk shape whose outer periphery is larger than that of the motor case 7 and is connected to the lower end portion on the outer peripheral side of the fan cover 6. The frame 8 integrates the fan cover 6 and the motor case 7 to form the case 5 of the electric blower 1.

また、フレーム８にはモータケース７内をファンカバー６内に連通させるためのフレーム通風口１４が形成される。フレーム通風口１４に連通させて遠心ファン２とモータ４との間の通風路の一部を構成し、遠心ファン２の性能に応じて、モータ４の冷却に必要な風量を確保するように設計される。   The frame 8 is formed with a frame ventilation opening 14 for communicating the inside of the motor case 7 with the inside of the fan cover 6. A part of the ventilation path between the centrifugal fan 2 and the motor 4 is configured to communicate with the frame ventilation opening 14, and designed to ensure the amount of air necessary for cooling the motor 4 according to the performance of the centrifugal fan 2. Is done.

さらに、フレーム８の外周部にはファンカバー６が嵌合され、このファンカバー６により遠心ファン２やディフューザ３１が覆われている。このファンカバー６は、前面の中央部に遠心ファン２の空気吸込口２１ａに対向する吸込開口部６ａを有するとともに、後面の全面に後部開口部（図示せず）が形成され、全体では略円筒状に形成されている。   Further, a fan cover 6 is fitted to the outer peripheral portion of the frame 8, and the centrifugal fan 2 and the diffuser 31 are covered by the fan cover 6. The fan cover 6 has a suction opening 6a facing the air suction port 21a of the centrifugal fan 2 at the center of the front surface, and a rear opening (not shown) is formed on the entire rear surface. It is formed in a shape.

一方、モータ４は、モータケース７に固定されたステータ１５と、このステータ１５の内側に配置されたロータ１６とにより構成されている。このロータ１６の中心の回転軸３の両端部がベアリング１３ａ、１３ａにより回転自在に軸支されている。さらに、モータケース７の後面近傍の周面には、略径方向に位置させて排気口としての吹出口（図示せず）が開口形成されている。   On the other hand, the motor 4 includes a stator 15 fixed to the motor case 7 and a rotor 16 disposed inside the stator 15. Both ends of the rotation shaft 3 at the center of the rotor 16 are rotatably supported by bearings 13a and 13a. Further, an air outlet (not shown) as an exhaust port is formed in the peripheral surface near the rear surface of the motor case 7 so as to be positioned substantially in the radial direction.

図２および図３に示すように、遠心ファン２は吸込開口６ａ側に配され、中央部に第１の空気吸込口２１ａを設けた上流側ファンプレート２１と、この上流側ファンプレート２１と同一直径を有し、これに対向して設けられた円盤形状の下流側ファンプレート２２と、これら両ファンプレート２１、２２と同一直径を有し、両ファンプレート２１、２２間の中央に配され、中央部に通気口２３ａを設けた輪状の中間ファンプレート２３を備え、図３に示すように、中間ファンプレート２３と上流側ファンプレート２１間に複数の上段ファンブレード２４を設け、これと同様に中間ファンプレート２３と下流側ファンプレート２２間に複数の下段ファンブレード２５を設けている。   As shown in FIGS. 2 and 3, the centrifugal fan 2 is arranged on the suction opening 6 a side, and has an upstream fan plate 21 provided with a first air suction port 21 a in the center, and the same as the upstream fan plate 21. A disk-shaped downstream fan plate 22 having a diameter and opposite thereto, and the same diameter as both the fan plates 21, 22, and arranged in the center between the fan plates 21, 22; As shown in FIG. 3, a plurality of upper fan blades 24 are provided between the intermediate fan plate 23 and the upstream fan plate 21, as shown in FIG. A plurality of lower fan blades 25 are provided between the intermediate fan plate 23 and the downstream fan plate 22.

従って、遠心ファン２は２層構造となり、あたかも２個のファンを重ねたように遠心ファンが形成され、さらに、上段側に上段排出口２６が形成され、下段側に上段排出口２６と同じ高さで同じ開口面積の下段排出口２７が軸方向に対して一致して形成され、上段排出口２６と下段排出口２７を合わせることで、剛性低下を招くことなく、ブレードの材厚を薄くまたはファンの排出口を高く設定することができる。   Accordingly, the centrifugal fan 2 has a two-layer structure, and a centrifugal fan is formed as if two fans are stacked. Further, an upper discharge port 26 is formed on the upper stage side, and the same height as the upper discharge port 26 is formed on the lower stage side. The lower discharge port 27 having the same opening area is formed to coincide with the axial direction, and the upper discharge port 26 and the lower discharge port 27 are combined to reduce the thickness of the blade without reducing rigidity. The fan outlet can be set high.

さらに、図１に示す遠心ファン２の上段排気口２６、下段排気口２７に、ディフューザ３１に設ける吸込口部３１ａが対向して配され、ディフューザ３１はフレーム８の吸込前方側に位置する。なお、本実施形態では中間ファンプレートを１枚設ける例で説明したが、複数枚の中間ファンプレートを設けてもよく、複数枚設けても同様の効果が得られる。   Further, a suction port portion 31 a provided in the diffuser 31 is disposed opposite to the upper exhaust port 26 and the lower exhaust port 27 of the centrifugal fan 2 shown in FIG. 1, and the diffuser 31 is located on the suction front side of the frame 8. In this embodiment, an example in which one intermediate fan plate is provided has been described. However, a plurality of intermediate fan plates may be provided, and the same effect can be obtained by providing a plurality of intermediate fan plates.

図４に示すように、ディフューザ３１は、略円板状の円板部３２と、この円板部３２の略中心に形成されて回転軸３が貫通する貫通孔３３と、フレーム８にネジで固定するためのネジ孔３４ａ、３４ｂと、ファン２の外周部に位置するようにディフューザ３１の外周縁部寄りに立設された複数の流入側円弧状ブレード３５と、図１に示すように、円板部３２の他面側である裏面に渦巻状に立設された複数の流入側円弧状ブレード３６とを備えている。   As shown in FIG. 4, the diffuser 31 includes a substantially disc-shaped disc portion 32, a through-hole 33 that is formed substantially at the center of the disc portion 32 and through which the rotary shaft 3 passes, and the frame 8 with screws. As shown in FIG. 1, screw holes 34 a and 34 b for fixing, a plurality of inflow-side arcuate blades 35 erected near the outer peripheral edge of the diffuser 31 so as to be located on the outer periphery of the fan 2, A plurality of inflow-side arcuate blades 36 are provided in a spiral shape on the back surface, which is the other surface side of the disc portion 32.

上記構成において、電動送風機１は回転軸３が回転すると、この回転に伴って遠心ファン２が回転し、この回転によって空気が吸引される。この空気は、ファンカバー６の前面側に形成された吸込開口部６ａを介して空気吸込口２１ａから遠心ファン２に吸い込まれ、一部の空気は上段側に吸い込まれて、上段ファンブレード２４により加圧され、残りの空気は通気口２３ａを介して下段側に吸い込まれて、下段ファンブレード２５により加圧され、上段排出口２６および下段排出口２７から吹き出される。そして、この空気は、ファンカバー６の内周面に沿ってディフューザ３１の吸込口部３１ａを介して流入側円弧状ブレード３５の間を、軸方向に広がるように流れる。さらに、この空気は、円板部３２裏面において、流出側円弧状ブレード３６の間を渦巻状にディフューザ３１の中心に向けて流れる。   In the above configuration, when the rotating shaft 3 rotates in the electric blower 1, the centrifugal fan 2 rotates along with this rotation, and air is sucked by this rotation. This air is sucked into the centrifugal fan 2 from the air suction port 21a via the suction opening 6a formed on the front surface side of the fan cover 6, and a part of the air is sucked into the upper stage side by the upper fan blade 24. The remaining air is sucked into the lower side through the vent 23 a, pressurized by the lower fan blade 25, and blown out from the upper outlet 26 and the lower outlet 27. Then, the air flows along the inner peripheral surface of the fan cover 6 so as to spread in the axial direction between the inflow-side arcuate blades 35 via the suction port portion 31 a of the diffuser 31. Further, the air flows spirally between the outflow side arcuate blades 36 toward the center of the diffuser 31 on the back surface of the disk portion 32.

このようにして、ディフューザ３１は、遠心ファン２の上段排出口２６および下段排出口２７から吹き出される空気を、一様に整流させ、モータ４へと導く。モータ４に導かれた空気はモータ４を冷却した後、モータケース７外に排出される。   In this way, the diffuser 31 uniformly rectifies the air blown from the upper stage outlet 26 and the lower stage outlet 27 of the centrifugal fan 2 and guides it to the motor 4. The air guided to the motor 4 is discharged outside the motor case 7 after cooling the motor 4.

本電動送風機１は、各々独立した２個の遠心ファンを離間した状態で背中合わせに回転軸に取付ける従来の遠心ファンと異なり、両ファンプレート２１、２２間に中間ファンプレート２３を介在させることで、１個の遠心ファンで高さの高い排出口が可能となって、大送風容量の遠心ファンが実現するとともに、構造が簡単、ブレードの材厚を薄くすることで、小型化が可能で安価かつ電動送風機の性能向上、電動送風機としての性能仕様範囲を広げることが可能となる。   Unlike the conventional centrifugal fan which attaches two independent centrifugal fans to the rotating shaft back to back, the electric blower 1 has an intermediate fan plate 23 interposed between the fan plates 21 and 22. A single centrifugal fan enables a high height outlet and realizes a centrifugal fan with a large blowing capacity. The structure is simple, and the blade thickness is reduced, making it possible to reduce the size and cost. It is possible to improve the performance of the electric blower and expand the performance specification range as an electric blower.

本第１実施形態の電動送風機によれば、構造が簡単、小型化が可能で安価、かつ低騒音で、大送風容量、高性能、性能仕様範囲を広げた電動送風機が実現する。   According to the electric blower of the first embodiment, an electric blower that has a simple structure, can be miniaturized, is inexpensive, has low noise, has a large blowing capacity, high performance, and a wide performance specification range is realized.

次に、本発明の第２実施形態の電動送風機を説明する。   Next, the electric blower of 2nd Embodiment of this invention is demonstrated.

第１実施形態が遠心ファンの上段排出口と下段排出口が軸方向に対して一致して形成されるのに対して、本第２実施形態は軸方向に対して不一致に形成される。   In the first embodiment, the upper stage outlet and the lower stage outlet of the centrifugal fan are formed so as to coincide with each other in the axial direction, whereas in the second embodiment, they are formed so as not to coincide with each other in the axial direction.

例えば、図５に示すように、本第２実施形態の電動送風機に用いる遠心ファン２Ａの上段側に形成される上段排出口２６は、下段側に形成される下段排出口２７とは、軸方向に対して不一致に形成される。   For example, as shown in FIG. 5, the upper outlet 26 formed on the upper stage of the centrifugal fan 2 </ b> A used in the electric blower of the second embodiment is different from the lower outlet 27 formed on the lower stage in the axial direction. It is formed inconsistent with respect to.

これにより、ファン排気口からの排気風が整流板上部ブレード先端での衝撃を緩和することが可能となり、電動送風機としての騒音（風切音）を低減することができる。   As a result, the exhaust air from the fan exhaust port can mitigate the impact at the tip of the rectifying plate upper blade, and noise (wind noise) as an electric blower can be reduced.

他の構成は図２に示す遠心ファンと異ならないので、同一符号を付して説明は省略する。   Since other configurations are not different from the centrifugal fan shown in FIG.

また、本発明の第３実施形態の電動送風機を説明する。   Moreover, the electric blower of 3rd Embodiment of this invention is demonstrated.

第１実施形態がディフューザの流入側円弧状ブレードを１段にするのに対して、本第３実施形態は遠心ファンと同様に軸方向に同じ高さで多層し、排出される空気流を分割する。   In contrast to the first embodiment, which has a single-stage diffuser arcuate blade on the diffuser side, the third embodiment is multi-layered at the same height in the axial direction, similar to the centrifugal fan, and divides the discharged air flow. To do.

例えば、図６に示すように、本第３実施形態の電動送風機は、ディフューザ３１Ｂが円板部３２に複数の流入側円弧状ブレード３５Ｂが設けられ、この流入側円弧状ブレード３５Ｂは遠心ファン２Ｂと同様に軸方向に上段上部ブレード部ブレード３５Ｂ１と下段上部ブレード部ブレード３５Ｂ２に多層化し、さらに、ケースフランジ部６ｂにファンカバー排気口６ｃを設け、上段排気口２６からの排気は、ファンカバー排気口６ｃを介してファンカバー６外へ排出して掃除機の他の構成部品の冷却等に使用し、下段排気口２７からの排気は、円板部３２裏面において、流出側円弧状ブレード３６の間を渦巻状にディフューザ３１Ｂの中心に向けて流れ、モータを冷却する。 For example, as shown in FIG. 6, in the electric blower of the third embodiment, the diffuser 31B is provided with a plurality of inflow-side arcuate blades 35B in the disc portion 32, and the inflow-side arcuate blades 35B are the centrifugal fan 2B. upper upper blade portion multilayered the blade 35B 1 and the lower upper blade portion blade 35B 2, further the fan cover outlet 6c provided on the case flange portion 6b, the exhaust from the upper air outlet 26, fans likewise axially It is discharged to the outside of the fan cover 6 through the cover exhaust port 6c and used for cooling other components of the vacuum cleaner. The exhaust from the lower exhaust port 27 is discharged from the circular arc blade on the back surface of the disc portion 32. It flows between 36 in a spiral toward the center of the diffuser 31B, and cools the motor.

これにより、用途別に排気風として損失を抑え、効率的に取り出すことが可能となり、例えば一側は電動部内の冷却用に、他側は掃除機の他の構成部品の冷却等で使用することが可能となる。   This makes it possible to reduce the loss as exhaust air for each application and efficiently extract it.For example, one side can be used for cooling inside the motorized part and the other side can be used for cooling other components of the vacuum cleaner. It becomes possible.

また、本発明の第４実施形態の電動送風機を説明する。   Moreover, the electric blower of 4th Embodiment of this invention is demonstrated.

第２実施形態が前面プレートと下流側プレートが同一直径で、上段排出口と下段排出口が軸方向に対して不一致であるのに対して、本第４実施形態は前面プレートと下流側プレートが異なる直径で、上段排出口と下段排出口が軸方向に対して不一致である。   In the second embodiment, the front plate and the downstream plate have the same diameter, and the upper discharge port and the lower discharge port do not coincide with each other in the axial direction. With different diameters, the upper and lower outlets are inconsistent with respect to the axial direction.

例えば、図７に示すように、本第４実施形態の電動送風機は、遠心ファン２Ｃが前面プレート２１と下流側プレート２２Ｃが異なる直径であり、上段排出口２６と下段排出口２７が軸方向に対して不一致である。   For example, as shown in FIG. 7, in the electric blower of the fourth embodiment, the centrifugal fan 2C has a diameter different from that of the front plate 21 and the downstream plate 22C, and the upper discharge port 26 and the lower discharge port 27 are in the axial direction. It is inconsistent.

これにより、用途別に各層の排気風性能（風量、圧力）を設定することが可能となる。   Thereby, it becomes possible to set the exhaust air performance (air volume, pressure) of each layer for each application.

また、本発明の第５実施形態の電動送風機を説明する。   Moreover, the electric blower of 5th Embodiment of this invention is demonstrated.

第１実施形態が遠心ファンのファンブレードを同じ高さの２段にし、第３実施形態がディフューザの流入側円弧状ブレードを同じ高さの２段にするのに対して、本第５実施形態はファンブレードおよび流入側円弧状ブレードを異なる高さの２段にする。   While the first embodiment has two fan blades of the centrifugal fan at the same height, and the third embodiment has two inflow arcuate blades of the diffuser at the same height, the fifth embodiment Makes the fan blade and the inflow side arcuate blade into two stages of different heights.

例えば、図８に示すように、本第５実施形態の電動送風機は、遠心ファン２Ｄが上段ファンブレード２４と、この上段ファンブレード２４より高さが低い下段ファンブレード２５Ｄを有し、ディフューザ３１Ｄは円板部３２に複数の円弧状ブレード３５Ｄが設けられ、この円弧状ブレード３５Ｄは遠心ファン２Ｄと同様に軸方向に、異なる高さの上段ブレード３５Ｄ１と、この上段ブレード３５Ｄ１より高さが低い下段ブレード３５Ｄ２に多層化される。 For example, as shown in FIG. 8, in the electric blower of the fifth embodiment, the centrifugal fan 2D has an upper fan blade 24 and a lower fan blade 25D whose height is lower than the upper fan blade 24, and the diffuser 31D is a plurality of arcuate blades 35D provided on the disk portion 32, to the arc-shaped blade 35D in the same manner as the centrifugal fan 2D axial, an upper blade 35D 1 of different heights, the height from the upper blade 35D 1 is It is multilayered in lower lower blade 35D 2.

これにより、用途別に各層の排気風性能（風量、圧力）を設定することが可能となる。   Thereby, it becomes possible to set the exhaust air performance (air volume, pressure) of each layer for each application.

本発明の第１実施形態に係る電動送風機の半断面図。The half sectional view of the electric blower concerning a 1st embodiment of the present invention. 本発明の第１実施形態に係る電動送風機に用いる遠心ファンの斜視図。The perspective view of the centrifugal fan used for the electric blower which concerns on 1st Embodiment of this invention. 本発明の第１実施形態に係る電動送風機に用いる遠心ファンの前面ファンプレートを除去して示す平面図。The top view which removes and shows the front fan plate of the centrifugal fan used for the electric blower which concerns on 1st Embodiment of this invention. 本発明の第１実施形態に係る電動送風機に用いるディフューザの平面図。The top view of the diffuser used for the electric blower which concerns on 1st Embodiment of this invention. 本発明の第２実施形態に係る電動送風機に用いる遠心ファンの斜視図。The perspective view of the centrifugal fan used for the electric blower which concerns on 2nd Embodiment of this invention. 本発明の第３実施形態に係る電動送風機のディフューザ部分の断面図。Sectional drawing of the diffuser part of the electric blower which concerns on 3rd Embodiment of this invention. 本発明の第４実施形態に係る電動送風機に用いる遠心ファンの斜視図。The perspective view of the centrifugal fan used for the electric blower which concerns on 4th Embodiment of this invention. 本発明の第５実施形態に係る電動送風機のディフューザ部分の断面図。Sectional drawing of the diffuser part of the electric blower which concerns on 5th Embodiment of this invention. 従来の電動送風機の半断面図。The half sectional view of the conventional electric blower.

符号の説明Explanation of symbols

１ 電動送風機
２ 遠心ファン
３ 回転軸
４ モータ
５ ケース
６ ファンカバー
６ａ 吸込開口部
７ モータケース
８ フレーム
１５ ステータ
１６ ロータ
２１ 前面ファンプレート
２１ａ 空気吸込口
２２ 下流側ファンプレート
２３ 中間ファンプレート
２３ａ 通気口
２４ 上段ファンブレード
２５ 下段ファンブレード
２６ 上段排出口
２７ 下段排出口
３１ ディフューザ
３１ａ 吸込口部
３２ 円板部
３３ 貫通孔
３５ 流入側円弧状ブレード
３６ 流出側円弧状ブレード DESCRIPTION OF SYMBOLS 1 Electric blower 2 Centrifugal fan 3 Rotating shaft 4 Motor 5 Case 6 Fan cover 6a Suction opening 7 Motor case 8 Frame 15 Stator 16 Rotor 21 Front fan plate 21a Air suction port 22 Downstream fan plate 23 Intermediate fan plate 23a Vent 24 Upper fan blade 25 Lower fan blade 26 Upper discharge port 27 Lower discharge port 31 Diffuser 31a Suction port 32 Disc portion 33 Through hole 35 Inlet arcuate blade 36 Outlet arcuate blade

Claims (4)

電動機出力軸に取付けられ、ファンプレート間に複数のファンブレードを設けてなる遠心ファンと、この遠心ファンを気密的に被うファンカバーと、前記遠心ファンの排気風を電動部内部に案内すると共にディフューザ効果を持たせた整流板とを備えた電動送風機において、前記ファンプレートは、上流側ファンプレートと下流側ファンプレートの間に輪状の中間ファンプレートを有し、各プレートと間に各々複数のファンブレードを設けて、軸方向に多層にすることを特徴とする電動送風機。 A centrifugal fan attached to the motor output shaft and provided with a plurality of fan blades between the fan plates, a fan cover that covers the centrifugal fan in an airtight manner, and exhaust air from the centrifugal fan is guided into the electric part. In the electric blower provided with a rectifying plate having a diffuser effect, the fan plate has a ring-shaped intermediate fan plate between the upstream fan plate and the downstream fan plate, and a plurality of each between the plates. An electric blower provided with fan blades and having a multilayer in the axial direction. 前記多層の各層のブレード固定位置を回転方向にずらし、各層のファン排出口の位置を軸方向に対して不一致にしたことを特徴とする請求項１に記載の電動送風機。 The electric blower according to claim 1, wherein the blade fixing position of each layer of the multilayer is shifted in the rotation direction, and the position of the fan discharge port of each layer is made inconsistent with the axial direction. 前記整流板は、前記遠心ファンの排気風の排出口に対向して軸方向に多層としたことを特徴とする請求項１または２に記載の電動送風機。 3. The electric blower according to claim 1, wherein the rectifying plate is multi-layered in the axial direction so as to face an exhaust air outlet of the centrifugal fan. 前記整流板の各層の軸方向の高さまたは排出部の外径を前記遠心ファンの排気風の排出口の高さに伴って変えることを特徴とする請求項３に記載の電気掃除機。 The vacuum cleaner according to claim 3, wherein the axial height of each layer of the rectifying plate or the outer diameter of the discharge portion is changed according to the height of the exhaust air outlet of the centrifugal fan.
JP2007157203A 2007-06-14 2007-06-14 Electric blower Expired - Fee Related JP5091552B2 (en)

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JP2012193679A (en) * 2011-03-17 2012-10-11 Mitsubishi Electric Corp Electric blower
JP2013072290A (en) * 2011-09-26 2013-04-22 Toshiba Corp Electric blower and vacuum cleaner
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012193679A (en) * 2011-03-17 2012-10-11 Mitsubishi Electric Corp Electric blower
JP2013072290A (en) * 2011-09-26 2013-04-22 Toshiba Corp Electric blower and vacuum cleaner
JP2016501507A (en) * 2012-12-18 2016-01-18 スパル オートモーティブ ソチエタ レスポンサビリタ リミテ Electric machine
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KR20210134944A (en) * 2020-03-05 2021-11-11 히라, 프로이즈본자 라즈보 인 트래고비나 디.오.오. Separator for vacuum cleaner
KR102358976B1 (en) 2020-03-05 2022-02-08 히라, 프로이즈본자 라즈보 인 트래고비나 디.오.오. Separator for vacuum cleaner

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