JPH0615876B2 - Electric blower - Google Patents
Electric blowerInfo
- Publication number
- JPH0615876B2 JPH0615876B2 JP62128217A JP12821787A JPH0615876B2 JP H0615876 B2 JPH0615876 B2 JP H0615876B2 JP 62128217 A JP62128217 A JP 62128217A JP 12821787 A JP12821787 A JP 12821787A JP H0615876 B2 JPH0615876 B2 JP H0615876B2
- Authority
- JP
- Japan
- Prior art keywords
- housing
- stator core
- motor
- brushless
- electric blower
- 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.)
- Expired - Fee Related
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は電動送風機に係り、特に電気掃除機の駆動源と
して好適な電動送風機に関する。TECHNICAL FIELD The present invention relates to an electric blower, and more particularly to an electric blower suitable as a drive source for an electric vacuum cleaner.
駆動源にブラシレス直流電動機を用いた電気掃除機用の
電動送風機としては、特開昭60−242827号に記載されて
いるように、ファンから吸い込んだ風をディフューザを
介してブラシレス直流電動機の内部と直接排気通路に導
くように分流させ、排気通路に導いた風で速度制御装置
を冷却することが提案されている。しかし、ブラシレス
直流電動機を効率よく冷却する点については配慮されて
いなかった。As an electric blower for an electric vacuum cleaner using a brushless DC motor as a drive source, as described in JP-A-60-242827, the air sucked from a fan is transferred to the inside of the brushless DC motor via a diffuser. It is proposed that the speed control device is cooled by the flow divided so as to be directly guided to the exhaust passage and the wind guided to the exhaust passage. However, no consideration was given to the efficient cooling of the brushless DC motor.
さらに、電動送風機としては、特開昭56−54994 号に記
載されているように、ファンケーシング背面に電動機外
郭を囲む突出円筒部を設け、複数個の連結用突条を介し
て該突出円筒内に電動機外郭を固定するとともに、電動
機外郭と電動機の内部部材との間に冷却空気流を通すた
めのエア・ギャップを設けるようにしたものが知られて
いる。Further, as an electric blower, as described in Japanese Patent Laid-Open No. 56-54994, a protruding cylindrical portion surrounding the outer casing of the electric motor is provided on the rear surface of the fan casing, and the protruding cylindrical portion is provided through a plurality of connecting projections. It is known that the electric motor casing is fixed to the electric motor casing, and an air gap is provided between the electric motor casing and the internal member of the electric motor for passing cooling air flow.
上記ブラシレス直流電動機を用いた電気掃除機では、そ
のブラシレス直流電動機のハウジング内を効率よく冷却
する点については配慮がされておらず、冷却効率が悪
く、かつ該電動機の通気抵抗が大きくなって、送風性能
が低下する欠点があった。In the electric vacuum cleaner using the brushless DC motor, no consideration is given to efficiently cooling the inside of the housing of the brushless DC motor, the cooling efficiency is poor, and the ventilation resistance of the motor becomes large, There was a drawback that the blowing performance was reduced.
さらに、特開昭56−54994号に記載の電動送風機では、
電動機外郭の外周が十分に冷却されるが、電動機外郭内
を効率よく冷却する点については配慮が十分になされて
おらず、電機子巻線及び固定子鉄心を十分に冷却するこ
とができない。Furthermore, in the electric blower described in JP-A-56-54994,
Although the outer periphery of the motor casing is sufficiently cooled, sufficient consideration has not been given to efficiently cooling the inside of the motor casing, and the armature winding and the stator core cannot be cooled sufficiently.
本発明の目的とするところは、ブラシレス直流電動機を
用いても、そのブラシレス直流電動機の固定子鉄心及び
電機子巻線を効率よく冷却して、かつ通気抵抗を小さく
おさえることができ、吸込性能のすぐれた電気掃除機と
することが可能である電動送風機を提供するにある。An object of the present invention is to use a brushless DC motor, to efficiently cool the stator core and armature windings of the brushless DC motor, and to reduce the ventilation resistance to a small level. An object is to provide an electric blower that can be an excellent vacuum cleaner.
上記目的は、ブラシレス直流電動機と、ファン及びディ
フューザからなる送風機とを用いた電動送風機におい
て、前記ブラシレス直流電動機は、筒状のハウジング
と、このハウジングの中央部分に配設したシャフト及び
このシャフトに設けた永久磁石を有する回転子と、この
回転子の外周に配設され、かつ、電機子巻線を巻装して
なる固定子鉄心とを備え、前記固定子鉄心と前記ハウジ
ングとの間に設けた複数個の連結部材によって前記固定
子鉄心を前記ハウジング内に支承することにより、前記
固定子鉄心の外周と前記ハウジングの内周との間に複数
個の通気孔を形成するとともに、前記ファンから吸い込
んだ風が、前記ディフューザを介して前記ハウジング内
の前記通気孔を通り抜ける構成とし、かつ、前記通気孔
に対向する位置に前記電機子巻線のコイルエンド部を配
設することにより、達成される。The above-mentioned object is an electric blower using a brushless DC electric motor and a blower composed of a fan and a diffuser, wherein the brushless DC electric motor is provided in a cylindrical housing, a shaft arranged in a central portion of the housing, and the shaft. A rotor having a permanent magnet, and a stator core arranged around the outer periphery of the rotor and having an armature winding wound around the rotor, and provided between the stator core and the housing. By supporting the stator core in the housing by a plurality of connecting members, a plurality of ventilation holes are formed between the outer circumference of the stator core and the inner circumference of the housing, and The sucked air passes through the vent hole in the housing through the diffuser, and the wind is sucked at a position facing the vent hole. By arranging the coil end portion of the armature windings is achieved.
ディフューザを介してブラシレス直流電動機の内部に導
かれた風は、固定子鉄心の外周とハウジングの内周との
間に形成した複数個の通風孔を通って該電動機のハウジ
ング外へ排出されるので、該電動機内での通気損失が小
さくなる。The wind introduced into the brushless DC motor through the diffuser is discharged to the outside of the motor housing through a plurality of ventilation holes formed between the outer circumference of the stator core and the inner circumference of the housing. The ventilation loss in the electric motor is reduced.
この際、複数個の通気孔が、固定子鉄心とハウジングと
の間に配置した複数個の連結部材によって固定子鉄心を
ハウジング内に支承することによって形成されているの
で、固定子鉄心とハウジングとの間に大きな通風断面積
が得られるため、固定子鉄心及び電機巻線が均一にかつ
円滑に冷却される。At this time, since the plurality of ventilation holes are formed by supporting the stator core in the housing by the plurality of connecting members arranged between the stator core and the housing, the stator core and the housing are Since a large ventilation cross-sectional area is obtained between the two, the stator core and the electric machine winding are uniformly and smoothly cooled.
そして、通気孔に対向する位置に電機子巻線のコイルエ
ンド部を配設したので、そのコイルエンド部が、ファン
より吸い込んだ風で直接冷却され、電機子巻線の温度上
昇が低くおさえられる。Further, since the coil end portion of the armature winding is arranged at a position facing the ventilation hole, the coil end portion is directly cooled by the air sucked from the fan, and the temperature rise of the armature winding can be suppressed low. .
以下、本発明の一実施例を第１図，第２図により説明す
る。An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.
第１図は本発明に係る電動送風機の断面図を示したもの
である。図において、ブラシレス直流電動機１６のシャ
フト１の両軸端がベアリング２，３で支承され、シャフ
ト１上にコアー４が固着され、そのコアー４上に永久磁
石５が固着されて回転子を形成している。この回転子を
支えているベアリング２，３は筒状のハウジング６で支
承され、このハウジング６の内周側に電機子巻線７を巻
装した固定子鉄心８を支承し、この固定子鉄心８の外周
とハウジング６の内周間に通風孔９を形成している。一
方、送風機１７のハウジング６と連結したケーシング１
０の内部には、シャフト１の一端にボルト１２で固定し
たファン１１及びディフューザ１３を設け、電動送風機
を形成している。ここで、ファン１１より吸い込んだ風
は矢印で示すように、ディフューザ１３を介してハウジ
ング６の開口部１４を経由してブラシレス直流電動機１
６の内部に導かれる。そして、この風は通気孔９へ突出
した電機子巻線７のコイルエンド部７ａを冷却し、通気
孔９を通って固定子鉄心８を冷却し、反対側のコイルエ
ンド部７ｂを冷却してハウジング６の開口部１５を経由
してブラシレス直流電動機１６外へ搬出される。FIG. 1 is a sectional view of an electric blower according to the present invention. In the drawing, both shaft ends of a brushless DC motor 16 are supported by bearings 2 and 3, a core 4 is fixed on the shaft 1, and a permanent magnet 5 is fixed on the core 4 to form a rotor. ing. The bearings 2 and 3 supporting the rotor are supported by a cylindrical housing 6, and a stator core 8 having an armature winding 7 wound around the inner peripheral side of the housing 6 is supported by the stator core 8. Ventilation holes 9 are formed between the outer circumference of 8 and the inner circumference of the housing 6. On the other hand, the casing 1 connected to the housing 6 of the blower 17
Inside the 0, a fan 11 and a diffuser 13 fixed by a bolt 12 to one end of a shaft 1 are provided to form an electric blower. Here, the wind sucked from the fan 11 passes through the diffuser 13 and the opening 14 of the housing 6 as shown by the arrow, and the brushless DC motor 1
6 is guided inside. Then, this wind cools the coil end portion 7a of the armature winding 7 protruding into the ventilation hole 9, cools the stator core 8 through the ventilation hole 9, and cools the coil end portion 7b on the opposite side. It is carried out of the brushless DC electric motor 16 through the opening 15 of the housing 6.
第２図は第１図の電動送風機のＡ−Ａ′断面図である。
図において、ハウジング６内に収納された固定子鉄心８
は、１８Ａ〜１８Ｄからなる複数個の連結部材１８によ
って支承され、この連結部材間であってハウジング６の
内周側と固定子鉄心８の外周側間の空間が通風孔９とな
り、他の名称は第１図と同一であるので省略する。FIG. 2 is a sectional view of the electric blower of FIG. 1 taken along the line AA '.
In the figure, a stator core 8 housed in a housing 6
Is supported by a plurality of connecting members 18 made of 18A to 18D, and a space between the connecting members and between the inner peripheral side of the housing 6 and the outer peripheral side of the stator core 8 serves as a ventilation hole 9, Are omitted because they are the same as those in FIG.
すなわち、開口部１４から導かれた風は通気孔９を通っ
て開口部１５から排出されるので、通気損失が小さい。
また、ブラシレス直流電動機１６の発生損失の中で大半
を占めているのは銅損であり、電機子巻線７のコイルエ
ンド部７ａ，７ｂをファン１１より吸い込んだ風で直接
冷却しているので、電機子巻線７の温度上昇を低く押え
ることができる。その結果、銅損が小さくなり、電動機
の出力が向上する。That is, since the wind guided from the opening 14 passes through the ventilation hole 9 and is discharged from the opening 15, the ventilation loss is small.
Further, copper loss occupies most of the generated loss of the brushless DC motor 16, and the coil ends 7a and 7b of the armature winding 7 are directly cooled by the wind sucked from the fan 11. Therefore, the temperature rise of the armature winding 7 can be suppressed low. As a result, copper loss is reduced and the output of the electric motor is improved.
したがって、本実施例によれば電動送風機の通気損失が
減少し、かつ電動機の出力向上により、吸込性能を向上
した電気掃除機がえられる。Therefore, according to the present embodiment, an electric vacuum cleaner in which the ventilation loss of the electric blower is reduced and the suction performance is improved by improving the output of the electric motor can be obtained.
なお、本実施例では固定子鉄心８と連結部材１８を別々
に設けたが、一体物であってもよいことはいうまでもな
い。In this embodiment, the stator core 8 and the connecting member 18 are provided separately, but it goes without saying that they may be integrated.
本発明によれば、固定子鉄心及び電機子巻線を十分に冷
却することができ、かつ、ブラシレス直流電動機内の通
気抵抗を小さくおさえることができるので、ブラシレス
直流電動機の出力が向上するため、ブラシレス直流電動
機を用いても、吸込性能のすぐれた電気掃除機とするこ
とができるところの電動送風機が得られる。According to the present invention, it is possible to sufficiently cool the stator core and the armature winding, and since it is possible to suppress the ventilation resistance in the brushless DC motor to be small, the output of the brushless DC motor is improved, Even if a brushless DC motor is used, an electric blower that can be used as an electric vacuum cleaner having excellent suction performance can be obtained.
第１図は本発明の一実施例の電動送風機の断面図、第２
図は第１図のＡ−Ａ′断面図である。 １……シャフト、５……永久磁石、６……ハウジング、
７……電機子巻線、８……固定子鉄心、９……通気孔、
１１……ファン、１３……ディフューザ、１６……ブラ
シレス直流電動機、１７……送風機、１８……連結部
材。FIG. 1 is a sectional view of an electric blower according to an embodiment of the present invention, and FIG.
The drawing is a sectional view taken along the line AA 'in FIG. 1 ... Shaft, 5 ... Permanent magnet, 6 ... Housing,
7 ... Armature winding, 8 ... Stator core, 9 ... Vent hole,
11 ... Fan, 13 ... Diffuser, 16 ... Brushless DC motor, 17 ... Blower, 18 ... Coupling member.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 遠藤 常博 茨城県日立市久慈町4026番地 株式会社日 立製作所日立研究所内 (72)発明者 豊島 久則 茨城県日立市東多賀町１丁目１番１号 株 式会社日立製作所多賀工場内 (56)参考文献 実開 昭60−187391（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tsunehiro Endo 4026 Kujimachi, Hitachi City, Ibaraki Prefecture Hitachi Research Laboratory, Hitachi Co., Ltd. Hitachi, Ltd. Taga Factory (56) References Showa 60-187391 (JP, U)
Claims (1)
フューザからなる送風機とを用いた電動送風機におい
て、 前記ブラシレス直流電動機は、筒状のハウジングと、こ
のハウジングの中央部分に配設したシャフト及びこのシ
ャフトに設けた永久磁石を有する回転子と、この回転子
の外周に配設され、かつ、電機子巻線を巻装してなる固
定子鉄心とを備え、前記固定子鉄心と前記ハウジングと
の間に設けた複数個の連結部材によって前記固定子鉄心
を前記ハウジング内に支承することにより、前記固定子
鉄心の外周と前記ハウジングの内周との間に複数個の通
気孔を形成するとともに、前記ファンから吸い込んだ風
が、前記ディフューザを介して前記ハウジング内の前記
通気孔を通り抜ける構成とし、かつ、前記通気孔に対向
する位置に前記電機子巻線のコイルエンド部を配設した
ことを特徴とする電動送風機。1. An electric blower using a brushless DC motor and a blower composed of a fan and a diffuser, wherein the brushless DC motor includes a cylindrical housing, a shaft arranged in a central portion of the housing, and A rotor having a permanent magnet provided, and a stator core arranged around the outer periphery of the rotor and having an armature winding wound around the rotor, and between the stator core and the housing. By supporting the stator core in the housing by a plurality of connecting members provided, a plurality of ventilation holes are formed between the outer periphery of the stator core and the inner periphery of the housing, and the fan is also provided. The air sucked from the air passes through the vent hole in the housing through the diffuser, and is located at a position facing the vent hole. An electric blower having a coil end portion of an armature winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62128217A JPH0615876B2 (en) | 1987-05-27 | 1987-05-27 | Electric blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62128217A JPH0615876B2 (en) | 1987-05-27 | 1987-05-27 | Electric blower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63295900A JPS63295900A (en) | 1988-12-02 |
| JPH0615876B2 true JPH0615876B2 (en) | 1994-03-02 |
Family
ID=14979391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62128217A Expired - Fee Related JPH0615876B2 (en) | 1987-05-27 | 1987-05-27 | Electric blower |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0615876B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH071145A (en) * | 1993-06-15 | 1995-01-06 | Jiro Sasaki | Method and tool for removing spatter of nozzle of torch body of electric welding machine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4416299A1 (en) * | 1994-05-09 | 1995-11-16 | Abb Management Ag | Electrical machine with an axial fan |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2939385C2 (en) * | 1979-09-28 | 1982-11-25 | Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart | Radial fans, in particular for heating or air conditioning systems for vehicles |
| JPS60242827A (en) * | 1984-05-18 | 1985-12-02 | 松下電器産業株式会社 | Cleaner |
| JPS60187391U (en) * | 1984-05-22 | 1985-12-12 | 東芝テック株式会社 | electric blower |
-
1987
- 1987-05-27 JP JP62128217A patent/JPH0615876B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH071145A (en) * | 1993-06-15 | 1995-01-06 | Jiro Sasaki | Method and tool for removing spatter of nozzle of torch body of electric welding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63295900A (en) | 1988-12-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |