JP2658196B2 - Electric blower - Google Patents
Electric blowerInfo
- Publication number
- JP2658196B2 JP2658196B2 JP63153208A JP15320888A JP2658196B2 JP 2658196 B2 JP2658196 B2 JP 2658196B2 JP 63153208 A JP63153208 A JP 63153208A JP 15320888 A JP15320888 A JP 15320888A JP 2658196 B2 JP2658196 B2 JP 2658196B2
- Authority
- JP
- Japan
- Prior art keywords
- air guide
- motor
- fan
- rotating
- ventilation path
- 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
- Motor Or Generator Cooling System (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は家庭用掃除機等に使われている電動送風機に
関するものである。Description: TECHNICAL FIELD The present invention relates to an electric blower used for a household vacuum cleaner and the like.
従来の技術 近年、掃除機等における出力競争が熾烈になり、その
主要構成部品である電動送風機についても、効率の高い
送風機が求められるようになってきた。2. Description of the Related Art In recent years, output competition in a vacuum cleaner and the like has become fierce, and a high-efficiency blower has been required for an electric blower which is a main component thereof.
以下、図面を参照しながら上述した従来の電動送風機
について説明する。Hereinafter, the conventional electric blower described above will be described with reference to the drawings.
第４図，第５図は従来の電動送風機ファン部の半断面
図とエアガイドの外観を示すものであり、第６図は第５
図のＫ−Ｋ′面を切った断面で気流を示すものである。4 and 5 show a half sectional view of a conventional electric blower fan unit and an appearance of an air guide, and FIG.
The air flow is shown by a cross section taken along the KK 'plane in the figure.
第４図において、１は高速で回転するモータ、２は複
数枚の羽根を有し、モータ１と共に回転する回転ファ
ン、３は回転ファン２と平行な位置に配置され、ディフ
ェーザ3aにより形成される複数の通風路を有し、回転フ
ァン２からの気流をモータ１に導くエアガイド、４は回
転ファン２とエアガイド３と覆うファンケースで、中央
に吸気口4aが開いており、モータ１のブラケットに圧入
固定してある。In FIG. 4, 1 is a motor that rotates at high speed, 2 is a rotating fan that has a plurality of blades, rotates with the motor 1, and 3 is disposed at a position parallel to the rotating fan 2 and is formed by a dephaser 3a. An air guide that has a plurality of ventilation paths and guides airflow from the rotating fan 2 to the motor 1 is a fan case that covers the rotating fan 2 and the air guide 3, and has an intake port 4 a opened at the center. Pressed and fixed to the bracket.
上記構成のもとで、モータ１が回転すると、ファンケ
ース４の吸気口4aから流れこんだ気流は、回転ファン２
を経てエアガイド３のディフェーザ3aにより形成される
通風路3bに沿ってモータ１の内部へ流れ込み、モータ１
の内部を冷却しながら排出される。With the above configuration, when the motor 1 rotates, the airflow flowing from the intake port 4a of the fan case 4
Flows into the motor 1 along the ventilation path 3b formed by the dephaser 3a of the air guide 3
It is discharged while cooling the inside.
発明が解決しようとする課題 しかしながら、上記のような構成では、ディフェーザ
3aによる通風路3bの長さが短く、しかも通風断面積が急
激に変化する為、第６図に示す気流において真空圧を上
げていくと、高圧部5aと低圧部5bの間でサージング現象
を起こして、真空圧が低下してしまい、最終的に効率が
低くなるという問題点を有していた。Problems to be Solved by the Invention However, in the above configuration, the dephasor
Since the length of the ventilation passage 3b due to 3a is short and the ventilation cross-sectional area changes rapidly, when the vacuum pressure is increased in the airflow shown in FIG. 6, a surging phenomenon occurs between the high-pressure portion 5a and the low-pressure portion 5b. This causes a problem that the vacuum pressure is reduced and the efficiency is eventually lowered.
本発明は上記問題点に鑑み、高真空圧下でのサージン
グ現象を抑え、モータの効率改善を簡単な手段により解
決するものである。SUMMARY OF THE INVENTION In view of the above problems, the present invention is to solve the problem of surging under a high vacuum pressure and to improve the motor efficiency by simple means.
課題を解決するための手段 上記問題点を解決する為に、本発明の電動送風機は、
高速で回転するモータと、モータの回転軸に固定され、
モータと共に回転する回転ファンと、回転ファンからの
気流を導くエアガイドと、回転ファンとエアガイドを覆
うファンケースとを有し、前記エアガイドのディフェー
ザにより形成される通風路の断面積にエアガイドの中心
部に向かうに従って次第に大きくなると共に底面に、こ
の通風路に沿って弓なりに盛り上がった凸部を設けたも
のである。Means for solving the problem In order to solve the above problems, the electric blower of the present invention,
A motor that rotates at high speed, and is fixed to the rotating shaft of the motor,
A rotating fan that rotates together with the motor, an air guide that guides airflow from the rotating fan, and a fan case that covers the rotating fan and the air guide. And a convex portion which is gradually increased toward the center and is provided on the bottom surface along the ventilation path.
作用 本発明は上記した構成により、エアガイド通風断面積
の急激な変化が抑えられ、通風断面積が次第に大きくな
る為、高真空圧下での高圧部と低圧部の発生が抑えられ
る。ゆえに、高圧部と低圧部の間で生じるサージング現
象が抑えられ、真空圧の低下を防ぐことができ、モータ
の効率改善を図ることができる。Operation According to the present invention, abrupt changes in the cross sectional area of the air guide are suppressed and the cross sectional area of the ventilation is gradually increased by the above-described configuration, so that the generation of the high pressure portion and the low pressure portion under the high vacuum pressure is suppressed. Therefore, a surging phenomenon that occurs between the high-pressure section and the low-pressure section is suppressed, a reduction in vacuum pressure can be prevented, and the efficiency of the motor can be improved.
実施例 以下、本発明の実施例について図面を参照しながら説
明する。Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.
第１図と第２図は本発明の電動送風機ファン部の半断
面図とエアガイドの外観を示したものであり、第３図は
第２図のＫ−Ｋ′面を切った断面で気流を示す図であ
る。FIGS. 1 and 2 show a half sectional view of an electric blower fan unit of the present invention and an appearance of an air guide. FIG. 3 shows a cross section taken along the line KK 'in FIG. FIG.
１は高速で回転するモータ、２は複数枚の羽根を有す
る回転ファン、６はディフェーザ6aで形成される複数の
通風路6bを有するエアガイド、４は回転ファン２とエア
ガイド３を覆うファンケースで、中央に吸気口4aが設け
られている。上記構成のもとで、モータ１が回転すると
ファンケース４から空気を吸い込み、回転ファン2,エア
ガイド６の通風路6bを経てモータ１の内部へ送り込まれ
る。そして、モータ１の内部を冷却しながら排出され
る。1 is a motor that rotates at high speed, 2 is a rotating fan having a plurality of blades, 6 is an air guide having a plurality of ventilation paths 6b formed by a dephaser 6a, and 4 is a fan case that covers the rotating fan 2 and the air guide 3. An intake port 4a is provided at the center. Under the above configuration, when the motor 1 rotates, air is sucked from the fan case 4 and is sent into the motor 1 through the rotating fan 2 and the ventilation path 6b of the air guide 6. Then, it is discharged while cooling the inside of the motor 1.
次に、この実施例の作用を説明する。回転ファン２よ
り吐き出された気流は、エアガイド６のディフェーザ6a
で形成される通風路6bを通って送り込まれる。ここで通
風路6bの入口部断面積を小さく（回転ファンの吐出面積
の15％〜25％）することにより、気流に圧損効果を加
え、真空圧を高くする。そして、通風路6bを通った気流
は、通風路6bの底面に、通風路に沿って弓なりに盛り上
がったサージング防止凸部７により、通風路6bの急激な
変化点で生じるサージング現象が抑えられ、モータ１内
部へスムーズに流れ込む。これにより、実負荷時点での
真空圧を高くすることができ、最終的には出力が高くな
り、効率を改善することができる。Next, the operation of this embodiment will be described. The airflow discharged from the rotating fan 2 is transmitted to the air guide 6 by the diffuser 6a.
The air is sent through the ventilation path 6b formed by. Here, by reducing the cross-sectional area of the inlet of the ventilation passage 6b (15% to 25% of the discharge area of the rotating fan), a pressure loss effect is added to the airflow and the vacuum pressure is increased. Then, the air current passing through the ventilation path 6b is suppressed on the bottom surface of the ventilation path 6b by the surging prevention convex portion 7 which rises in a bow shape along the ventilation path, and a surging phenomenon generated at a sharp change point of the ventilation path 6b is suppressed. It flows into the motor 1 smoothly. As a result, the vacuum pressure at the time of actual load can be increased, and finally, the output increases and the efficiency can be improved.
また、サージング現象を抑えることにより、サージン
グ現象による電動機の騒音も低減することができた。Further, by suppressing the surging phenomenon, the noise of the electric motor due to the surging phenomenon could be reduced.
発明の効果 以上のように本発明は、エアガイドの通風断面積をエ
アガイドの中心部に向かうに従って次第に大きくすると
共に、通風断面積の急激な変化を抑える為のサージング
防止凸部を設けることにより、高真空圧下での高圧部と
低圧部の間で生じるサージング現象が抑えられ、真空圧
の低下を防ぐことができ、電動機の効率を改善すること
ができる。しかも、サージング現象による騒音も低減す
ることもでき、実用上きわめて有利なものである。Effect of the Invention As described above, the present invention increases the ventilation cross-sectional area of the air guide gradually toward the center of the air guide, and provides a surging prevention convex portion for suppressing a sudden change in the ventilation cross-sectional area. Further, a surging phenomenon that occurs between the high-pressure section and the low-pressure section under a high vacuum pressure can be suppressed, a reduction in vacuum pressure can be prevented, and the efficiency of the electric motor can be improved. In addition, noise due to the surging phenomenon can be reduced, which is extremely advantageous in practical use.
第１図は本発明の一実施例を示す電動送風機のファン部
半断面図、第２図は本発明におけるファン部エアガイド
の外観図、第３図は第２図における通風路Ｋ−Ｋ′の切
断面図、第４図は従来の電動送風機のファン部半断面
図、第５図は従来のファン部エアガイドの外観図、第６
図は第５図における通風路Ｋ−Ｋ′の切断面図である。 １……モータ、２……回転ファン、４……ファンケー
ス、６……エアガイド、6a……ディフェーザ、6b……通
風路、７……サージング防止凸部。FIG. 1 is a half sectional view of a fan section of an electric blower showing one embodiment of the present invention, FIG. 2 is an external view of a fan section air guide of the present invention, and FIG. 3 is a ventilation path KK 'in FIG. FIG. 4 is a half sectional view of a fan section of a conventional electric blower, FIG. 5 is an external view of a conventional fan air guide, and FIG.
The figure is a cross-sectional view of the ventilation path KK 'in FIG. 1 ... motor, 2 ... rotating fan, 4 ... fan case, 6 ... air guide, 6a ... dephaser, 6b ... ventilation path, 7 ... surging prevention convex part.
Claims (1)
に固定され、モータと共に回転する回転ファンと、回転
ファンからの気流を導くエアガイドと、回転ファンとエ
アガイドを覆うファンケースとを有し、前記エアガイド
のディフェーザにより形成される通風路の断面積をエガ
イドの中心部に向かうに従って次第に大きくすると共
に、この通風路の底面に、通風路に沿って弓なりに盛り
上がった凸部を設けた電動送風機。A motor rotating at a high speed, a rotating fan fixed to a rotating shaft of the motor and rotating with the motor, an air guide for guiding airflow from the rotating fan, and a fan case for covering the rotating fan and the air guide. The cross-sectional area of the ventilation path formed by the air guide dephaser is gradually increased toward the center of the air guide, and a convex portion is formed on the bottom surface of the ventilation path in a bow shape along the ventilation path. Electric blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63153208A JP2658196B2 (en) | 1988-06-21 | 1988-06-21 | Electric blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63153208A JP2658196B2 (en) | 1988-06-21 | 1988-06-21 | Electric blower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01321837A JPH01321837A (en) | 1989-12-27 |
| JP2658196B2 true JP2658196B2 (en) | 1997-09-30 |
Family
ID=15557408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63153208A Expired - Lifetime JP2658196B2 (en) | 1988-06-21 | 1988-06-21 | Electric blower |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2658196B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108036485B (en) * | 2018-01-15 | 2023-07-18 | 奥克斯空调股份有限公司 | Air duct structure and air conditioner |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5311509U (en) * | 1976-07-13 | 1978-01-31 | ||
| JPS5340405U (en) * | 1976-09-10 | 1978-04-07 |
-
1988
- 1988-06-21 JP JP63153208A patent/JP2658196B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01321837A (en) | 1989-12-27 |
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