JP3246039B2 - Electric blower - Google Patents
Electric blowerInfo
- Publication number
- JP3246039B2 JP3246039B2 JP04482193A JP4482193A JP3246039B2 JP 3246039 B2 JP3246039 B2 JP 3246039B2 JP 04482193 A JP04482193 A JP 04482193A JP 4482193 A JP4482193 A JP 4482193A JP 3246039 B2 JP3246039 B2 JP 3246039B2
- Authority
- JP
- Japan
- Prior art keywords
- bracket
- cylindrical portion
- electric blower
- air
- rotor
- 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 - Lifetime
Links
Landscapes
- Electric Suction Cleaners (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、家庭用掃除機などに使
われている電動送風機に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric blower used in household vacuum cleaners and the like.
【０００２】[0002]
【従来の技術】近年の家電製品の小型化の要望にともな
い、電動機に対しての小型化の要望も高まってきてい
る。また、掃除機等における高出力化競争が激しくな
り、基幹部品である電動送風機についても高出力・高効
率の電動機が要望されている。2. Description of the Related Art With the recent demand for miniaturization of home electric appliances, the demand for miniaturization of electric motors has been increasing. In addition, competition for increasing the output of vacuum cleaners and the like has intensified, and there has been a demand for a high-output and high-efficiency motor for the electric blower, which is a key component.
【０００３】以下、図面を参照しながら従来の電動送風
機について説明する。図４，図５は従来の電動送風機の
構成を示す半断面図と構成の詳細を表す拡大図である。
図４において１は固定子鉄心１ａを有した固定子、２は
回転子であり、３は固定子１の内側に配置される回転子
２を収納する円筒部３ａの一端開口縁に、この円筒部３
ａの外側に張り出す平面部３ｂを設けて形成されたブラ
ケットである。[0003] A conventional electric blower will be described below with reference to the drawings. 4 and 5 are a half sectional view showing the configuration of a conventional electric blower and an enlarged view showing details of the configuration.
In FIG. 4, reference numeral 1 denotes a stator having a stator core 1a, 2 denotes a rotor, and 3 denotes an end of an opening of a cylindrical portion 3a for accommodating the rotor 2 disposed inside the stator 1, and an end of the cylindrical portion 3a. Part 3
4A is a bracket formed by providing a flat portion 3b extending outside of FIG.
【０００４】また、４は回転子２の回転子軸２ａに固定
された回転ファン、５は周辺部に複数の風入口を有する
とともに、これら風入口に連なる複数の整流風路５ａを
内面に設けて形成され、かつ回転ファン４とブラケット
３の一端開口を覆って設けられ、回転ファン４から吐出
された風をブラケット３内に導くエアガイド、６はエア
ガイド５および回転ファン４を覆うファンケースで、ブ
ラケット３に圧入固定してある。[0004] Reference numeral 4 denotes a rotating fan fixed to the rotor shaft 2a of the rotor 2, and 5 has a plurality of air inlets in the peripheral portion, and a plurality of rectifying air passages 5a connected to these air inlets are provided on the inner surface. An air guide which is formed to cover the opening of the rotating fan 4 and one end of the bracket 3 and guides the wind discharged from the rotating fan 4 into the bracket 3, and 6 is a fan case which covers the air guide 5 and the rotating fan 4. Thus, it is press-fitted and fixed to the bracket 3.
【０００５】以上のように構成される電動送風機につい
て、以下その動作について説明する。電動送風機に電源
が印加されると回転子２が高速で回転する。次に、回転
子２が回転することにより回転子軸２ａに固定された回
転ファン４が回転する。よって、回転ファン４が高速回
転することによりファンケース６の吸込口６ａから空気
を吸い込み、回転ファン４の内部を通ってエアガイド５
によりブラケット３内部へ導かれる。その後、ブラケッ
ト３内部へ導かれた空気は固定子１と回転子２を冷却し
ながら外部へ排出される。The operation of the electric blower configured as described above will be described below. When power is applied to the electric blower, the rotor 2 rotates at high speed. Next, as the rotor 2 rotates, the rotating fan 4 fixed to the rotor shaft 2a rotates. Therefore, when the rotating fan 4 rotates at a high speed, air is sucked from the suction port 6 a of the fan case 6, and passes through the inside of the rotating fan 4 to form the air guide 5.
Is guided into the bracket 3. Thereafter, the air guided into the bracket 3 is discharged to the outside while cooling the stator 1 and the rotor 2.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら上記従来
の構成では、エアガイド５とブラケット３を取りつける
ためにブラケット３に円筒部３ａの外側に張り出す平面
部３ｂを設ける必要があり、電動機の小型化を図るため
ブラケット３の外径を小さくすると平面部３ｂの面積が
小さくなると共に、平面部３ｂから円筒部３ａにむかっ
てＲ面取り部を小さくしなければならなかった。However, in the above-mentioned conventional construction, it is necessary to provide the bracket 3 with a flat portion 3b projecting outside the cylindrical portion 3a in order to mount the air guide 5 and the bracket 3, and the motor is downsized. Therefore, when the outer diameter of the bracket 3 is reduced to reduce the area, the area of the flat portion 3b is reduced, and the rounded portion from the flat portion 3b to the cylindrical portion 3a must be reduced.
【０００７】したがって、図５に示すような回転ファン
４から吐出された空気がエアガイド５内部を通りブラケ
ット３の内部に流れこむ際に、ブラケット３の外側に張
り出す平面部３ｂから円筒部３ａへのＲ面取り部により
空気の流れが急激に変化するため空気の乱れが生じ送風
性能を低下させていた。更に、ブラケット３の外側に張
り出す平面部３ｂから円筒部３ａへのＲ面取りが小さく
ならざるを得ないため、強度的にも不十分であるという
問題点も有していた。Therefore, when the air discharged from the rotary fan 4 as shown in FIG. 5 passes through the air guide 5 and flows into the bracket 3, the cylindrical portion 3a extends from the flat portion 3b projecting outside the bracket 3 to the outside. Since the flow of air suddenly changes due to the R-chamfered portion, air turbulence occurs and the air blowing performance is reduced. Furthermore, since the rounded chamfer from the flat portion 3b projecting outside the bracket 3 to the cylindrical portion 3a has to be reduced, there is also a problem that the strength is insufficient.
【０００８】本発明は上記欠点に鑑み、簡単な構成によ
り送風性能を向上できる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 view of the above drawbacks, and has as its object to provide an electric blower that can improve the blowing performance with a simple configuration.
【０００９】[0009]
【課題を解決するための手段】この目的を達成するため
に、本発明の電動送風機はブラケットの円筒部の外側に
張り出す平面部から円筒部に向かってのＲ面取り部に放
射状に複数個の凹部状の通風路を設けた構成としたもの
である。In order to achieve this object, an electric blower according to the present invention comprises a plurality of radially extending chamfers extending from a flat portion projecting outside a cylindrical portion of a bracket toward a cylindrical portion. It is configured such that a concave ventilation path is provided.
【００１０】[0010]
【作用】この構成によって、回転ファンから吐出された
空気がエアガイド内部を通りブラケットの内部に流れこ
む際の空気の流れが急激に変化するのを防ぐことがで
き、送風性能を高めることができる。With this configuration, it is possible to prevent the air discharged from the rotary fan from flowing abruptly through the inside of the air guide and into the inside of the bracket, thereby improving the blowing performance. .
【００１１】[0011]
【実施例】以下本発明の一実施例について、図面を参照
しながら説明する。An embodiment of the present invention will be described below with reference to the drawings.
【００１２】図１は本発明の電動送風機の構成を示す半
断面図であり、図２は上記構成の詳細を表す拡大図であ
り、図３はブラケット側より見た平面図である。図１，
図２，図３において１は固定子、２は回転子である。４
は回転ファン、５はエアガイド、６はファンケースであ
り、これらは従来例と同一である。７は固定子１の内側
に配置される回転子２を収納する円筒部７ａから外側に
張り出す平面部７ｂを有し、平面部７ｂから円筒部７ａ
に向かってのＲ面取り部に放射状に複数個の凹部状の通
風路７ｃを設けたブラケットである。FIG. 1 is a half sectional view showing the structure of the electric blower of the present invention, FIG. 2 is an enlarged view showing the details of the above structure, and FIG. 3 is a plan view seen from the bracket side. Figure 1
2 and 3, reference numeral 1 denotes a stator, and 2 denotes a rotor. 4
Is a rotary fan, 5 is an air guide, and 6 is a fan case, which are the same as the conventional example. 7 has a flat portion 7b extending outward from a cylindrical portion 7a for accommodating the rotor 2 disposed inside the stator 1, and a cylindrical portion 7a extending from the flat portion 7b.
This is a bracket in which a plurality of concave ventilation paths 7c are radially provided in an R-chamfered portion toward.
【００１３】以上のような構成のもとで、以下その動作
について説明する。電動送風機に電源が印加されると回
転子２が高速で回転する。次に、回転子２が回転するこ
とにより回転子軸２ａに固定された回転ファン４が回転
する。よって、回転ファン４が高速回転することにより
ファンケース６の吸込口６ａから空気を吸い込み、回転
ファン４の内部を通ってエアガイド５によりブラケット
７内部へ導かれる。ここで、エアガイドから吐出された
空気は平面部７ｂから円筒部７ａヘ流れこむ際通風路７
ｃにより整流されるためスムーズな空気の流れを得るこ
とができ、送風性能を向上できる。更に、平面部７ｂか
ら円筒部７ａへのＲ面取り部に通風路７ｃを放射状に設
けることにより、リブ効果によりブラケット７の強度増
加も可能になる。The operation of the above configuration will be described below. When power is applied to the electric blower, the rotor 2 rotates at high speed. Next, the rotation of the rotor 2 causes the rotation fan 4 fixed to the rotor shaft 2a to rotate. Therefore, when the rotating fan 4 rotates at high speed, air is sucked from the suction port 6 a of the fan case 6, and is guided into the bracket 7 by the air guide 5 through the inside of the rotating fan 4. Here, when the air discharged from the air guide flows from the flat portion 7b to the cylindrical portion 7a, the air passage 7
Since the air is rectified by c, a smooth air flow can be obtained, and the blowing performance can be improved. Further, by providing the ventilation path 7c radially at the chamfered portion from the flat portion 7b to the cylindrical portion 7a, the strength of the bracket 7 can be increased by the rib effect.
【００１４】[0014]
【発明の効果】以上説明したように、本発明はブラケッ
トの円筒部の外側に張り出す平面部から円筒部に向かっ
てのＲ面取り部に放射状に複数個の凹部状の通風路を設
けることにより、Ｒ面取り部での空気の乱れを低減し送
風性能を向上させると共に、リブ効果によるブラケット
強度増加も可能にすることができる優れた電動送風機を
実現できるものである。As described above, according to the present invention, a plurality of recessed ventilation passages are radially provided on the R chamfered portion from the flat portion protruding outside the cylindrical portion of the bracket toward the cylindrical portion. In addition, it is possible to realize an excellent electric blower capable of reducing the turbulence of the air in the R chamfered portion, improving the blowing performance, and increasing the bracket strength by the rib effect.
【図１】本発明の一実施例における電動送風機の構成を
示す半断面図FIG. 1 is a half sectional view showing a configuration of an electric blower according to an embodiment of the present invention.
【図２】本発明の一実施例における電動送風機の構成の
詳細を表す拡大図FIG. 2 is an enlarged view showing details of a configuration of an electric blower according to an embodiment of the present invention.
【図３】本発明の一実施例における電動送風機の構成を
示す平面図FIG. 3 is a plan view showing a configuration of an electric blower according to one embodiment of the present invention.
【図４】従来の電動送風機の構成を示す半断面図FIG. 4 is a half sectional view showing a configuration of a conventional electric blower.
【図５】従来の電動送風機の構成の詳細を表す拡大図FIG. 5 is an enlarged view showing details of a configuration of a conventional electric blower.
【符号の説明】 １ 固定子 ２ 回転子 ４ 回転ファン ５ エアガイド ６ ファンケース ７ ブラケット ７ｃ 通風路[Description of Signs] 1 Stator 2 Rotor 4 Rotating fan 5 Air guide 6 Fan case 7 Bracket 7c Ventilation path
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭62−13800（ＪＰ，Ａ) 特開 平１−300091（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) F04D 29/44 A47L 9/00 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-62-13800 (JP, A) JP-A-1-300091 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) F04D 29/44 A47L 9/00
Claims (2)
子の内側に配置される回転子と、前記回転子を収納する
円筒部の一端開口縁にこの円筒部の外側に張り出す平面
部を設けて形成されたブラケットと、前記回転子の軸に
固定された回転ファンと、周辺部に複数の風入口を有す
るとともにこれら風入口に連なる複数の整流風路を内面
に設けて形成され、かつ前記回転ファンと前記ブラケッ
トの一端開口を覆って設けられ前記回転ファンから吐出
された風を前記ブラケット内に導くエアガイドと、この
エアガイドおよび前記回転ファンを覆って前記ブラケッ
トの一端開口側に取りつけたファンケースとを具備した
電動送風機において、前記ブラケットの円筒部の外側に
張り出す平面部から円筒部に向かってのＲ面取り部に放
射状に複数個の凹部状の通風路を設けたことを特徴とす
る電動送風機。1. A stator having a stator core, a rotor disposed inside the stator, and a plane projecting outside of the cylindrical portion at an opening edge of one end of the cylindrical portion that houses the rotor. A bracket formed with a portion, a rotating fan fixed to the shaft of the rotor, and a plurality of rectifying air paths having a plurality of air inlets in the peripheral portion and connected to the air inlets are provided on the inner surface. And an air guide provided to cover one end opening of the rotating fan and the bracket to guide the wind discharged from the rotating fan into the bracket, and one end opening side of the bracket covering the air guide and the rotating fan. And a fan case attached to the bracket, wherein a plurality of recesses are radially formed in a round chamfer from the flat portion projecting outside the cylindrical portion of the bracket toward the cylindrical portion. An electric blower characterized by having a ventilation passage in a shape of a circle.
ことを特徴とする電気掃除機。 2. An electric blower according to claim 1.
An electric vacuum cleaner characterized by the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04482193A JP3246039B2 (en) | 1993-03-05 | 1993-03-05 | Electric blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04482193A JP3246039B2 (en) | 1993-03-05 | 1993-03-05 | Electric blower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06257598A JPH06257598A (en) | 1994-09-13 |
| JP3246039B2 true JP3246039B2 (en) | 2002-01-15 |
Family
ID=12702119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04482193A Expired - Lifetime JP3246039B2 (en) | 1993-03-05 | 1993-03-05 | Electric blower |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3246039B2 (en) |
-
1993
- 1993-03-05 JP JP04482193A patent/JP3246039B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06257598A (en) | 1994-09-13 |
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