JPS59170495A - Motor fan - Google Patents

Motor fan

Info

Publication number
JPS59170495A
JPS59170495A JP58046205A JP4620583A JPS59170495A JP S59170495 A JPS59170495 A JP S59170495A JP 58046205 A JP58046205 A JP 58046205A JP 4620583 A JP4620583 A JP 4620583A JP S59170495 A JPS59170495 A JP S59170495A
Authority
JP
Japan
Prior art keywords
impeller
air guide
volute chamber
flow
air
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.)
Pending
Application number
JP58046205A
Other languages
Japanese (ja)
Inventor
Mikio Yamaoka
山岡 三喜男
Kunihito Mori
森 国人
Masami Fukumoto
正美 福本
Izumi Yamaura
泉 山浦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP58046205A priority Critical patent/JPS59170495A/en
Publication of JPS59170495A publication Critical patent/JPS59170495A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/40Casings; Connections of working fluid
    • F04D29/42Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44Fluid-guiding means, e.g. diffusers
    • F04D29/441Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • F04D29/444Bladed diffusers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00Geometry
    • F05D2250/50Inlet or outlet
    • F05D2250/52Outlet

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE:To reduce vibration and noise by forming a flat face approximately flush with the lower end face of delivery port of impeller on an air guide formed with a volute chamber thereby straightening the delivery air flow from impeller and leading to te volute chamber. CONSTITUTION:An air guide 6 is formed with a flat face 6a approximately flush with the lower end face of delivery port of impeller 4 between tongues 9 then enlarged to provide variation of volume in a volute chamber 5. Consequently air flow is delivered in parallel from the impeller 4 and since the area is not increased at the flat face section 6a it will enter as layer flow into an air guide 6, then the area is increased gradually through inclination of volute chamber 5 to decelerate and boost gradually. Consequently air will flow smoothly to eliminate peeling of flow in the volute chamber 5 resulting in reduction of vibration and noise.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は電気掃除機に組込んで使用する電動送風機に関
するものである。
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electric blower that is incorporated into a vacuum cleaner.

従来例の構成とその問題点 従来から知られている電動送風機をより小型化するため
にインペラおよびエアガイド等の構成に種々の工夫がこ
らされている。第1図〜第3図に示した電動送風機(未
公開)はどの例であり、以下構成を説明する。1はほぼ
円錐状のロータで、そのハブ面にモータ2と平行でかつ
ラジアル方向に多数配列して一体にブIノード3を設け
ており、これらによりインペラ4が構成されている。6
はインペラ4の外周に多数の独立したボリュート室6を
形成したエアガイドである。ボリュート室5は、インペ
ラ4とエアガイド6とを覆ったファンケーシング7がモ
ータ8のブラケットに固着されて形成されている。さて
、前記のボリュート室5は、エアガイド6の外周に多数
設けたトング9が放射状に延びており、終端9aがファ
ンケーシング7に接するようになっており、その通路に
於いてトング9の先端から傾斜をもって徐々に体積変化
を与え徐々に拡大する様になっている。そしてトング9
の終端9iLからエアガイド6の裏面へ戻り通路用の案
内羽根10を連結して通路が構成され、インペラ4の回
転で発生した気流をモータ8の内部へ導きモータ8を冷
却して外部へ排出する。
Conventional Structures and Problems Various improvements have been made to the structures of impellers, air guides, etc. in order to make conventional electric blowers more compact. The electric blower (unpublished) shown in FIGS. 1 to 3 is an example, and the configuration will be explained below. Reference numeral 1 denotes a substantially conical rotor, and a large number of I nodes 3 are integrally provided on the hub surface of the rotor in parallel with the motor 2 and arranged in the radial direction, and an impeller 4 is constituted by these nodes. 6
is an air guide in which a large number of independent volute chambers 6 are formed around the outer periphery of an impeller 4. The volute chamber 5 is formed by a fan casing 7 that covers the impeller 4 and the air guide 6 and is fixed to the bracket of the motor 8. Now, in the volute chamber 5, a large number of tongues 9 provided on the outer periphery of the air guide 6 extend radially, and the terminal end 9a is in contact with the fan casing 7. From there, the volume gradually changes with an inclination, and it gradually expands. and tongs 9
A passage is formed by connecting the guide vanes 10 for the return passage from the terminal end 9iL of the air guide 6 to the back surface of the air guide 6, and guides the airflow generated by the rotation of the impeller 4 into the inside of the motor 8, cools the motor 8, and discharges it to the outside. do.

上記のように構成された電動送風機において、インペラ
4の回転によって発生した空気流は、図示矢印の様に、
インペラ4の吐出口よりエアガイド6に設けた各トング
9間のボリュート室6を経て戻り通路に入りモータ8の
内部を冷却して外部に排出される。
In the electric blower configured as above, the airflow generated by the rotation of the impeller 4 is as shown by the arrow in the figure.
The air enters the return passage from the discharge port of the impeller 4 through the volute chamber 6 between the tongues 9 provided in the air guide 6, cools the inside of the motor 8, and is discharged to the outside.

しかし、インペラ4で発生した空気流は、トング9の先
端からボリュート室6に流入する際、第3図のように急
激にボリュート室5が拡大しているため、風量が少なく
なった場合に空気流が著しく乱れ、脈動が起こり、振動
が発生するとともに、騒音を増大させファン特注ヲ悪化
させる々いう問題がある。
However, when the air flow generated by the impeller 4 flows into the volute chamber 6 from the tip of the tongs 9, the volute chamber 5 expands rapidly as shown in Fig. 3, so when the air flow decreases, the air Problems arise in that the flow becomes extremely turbulent, pulsation occurs, vibrations occur, and the noise increases and the fan customization deteriorates.

発明の目的 本発明は上記の点に着眼したもので、振動低減と騒音低
下をはかった電動送風機を提供するものである。
OBJECTS OF THE INVENTION The present invention focuses on the above points, and provides an electric blower that reduces vibration and noise.

発明の構成 本発明の電動送風機は、ポリュート室を形成したエアガ
イドに、インペラの吐出口の下端面とほぼ同一面となる
平坦面全形成したもので、インペラから吐出された空気
流を平坦面で整流してボリュート室へ導くようにして急
激な空気流の拡大をなくし、空気流の流れをスムーズに
したものである。
Structure of the Invention The electric blower of the present invention has an air guide in which a porlute chamber is formed with a flat surface that is almost flush with the lower end surface of the discharge port of the impeller, so that the air flow discharged from the impeller is directed to the flat surface. This system rectifies the air flow and guides it to the volute chamber, eliminating sudden expansion of the air flow and making the air flow smoother.

実施例の説明 以下、本発明の一実施例を第4図〜第6図によって説明
する。第1図〜第3図と同一部分には同一符号を付して
説明を省略する。エアガイド6は各トング9間にインペ
ラ4の吐出口の下端面とほぼ同一面となる平坦面6af
:形成しており、その後ボリュート室5に体積変化を与
え拡大する様に構成している。
DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 4 to 6. Components that are the same as those in FIGS. 1 to 3 are designated by the same reference numerals and their explanations will be omitted. The air guide 6 has a flat surface 6af between each tongue 9 that is substantially flush with the lower end surface of the discharge port of the impeller 4.
: The volute chamber 5 is formed so as to subsequently change its volume and expand.

従ってインペラ4より吐出される空気流は、図中矢印の
ようにインペラ4より平行に吐出され、平坦面6a部に
おいては、面積が拡大されずそのまま層流としてエアガ
イド6に入った後、ボリュート室5の傾斜によって順次
拡大され、徐々に減速昇圧される。このため空気流はス
ムーズに流動してボリュート室6での流れの剥離を無く
し振動。
Therefore, the air flow discharged from the impeller 4 is discharged in parallel from the impeller 4 as shown by the arrow in the figure, and the area of the flat surface 6a is not expanded, and after entering the air guide 6 as a laminar flow, the air flow is passed through the volute. The chamber 5 is gradually expanded by tilting, and the pressure is gradually decelerated and increased. Therefore, the airflow flows smoothly, eliminating separation of the flow in the volute chamber 6 and causing vibration.

騒音を低減させることができるものである。実験では、
平坦面6aの巾ノを約4mm設けることにより、第1図
の例では風量を少なく1〜た場合、0、8 m’ / 
minで振動が発生し、ていたが、実施例では0.2m
’/m1nVC風計を少なくしても振動が発生t7yい
結果を得た。
It can reduce noise. In the experiment,
By setting the width of the flat surface 6a to about 4 mm, in the example of FIG.
Vibration occurred at 0.2 m in the example.
'/m1n Even if the number of VC wind gauges was reduced, vibration occurred t7y and a poor result was obtained.

発明の効果 以上のように本発明の電動送風機は、ボリュート室を形
成したエアガイドに、インペラの吐出口の下端面とほぼ
同−而となる平坦面全形成して、インペラから吐出され
た空気流を整流してボリュート室へ導くようにしている
ため、簡単な構成で空気流の流れがスムーズになり、振
動低減と騒音低下をはかることができるもので、その効
果はきわめて大きい。
Effects of the Invention As described above, in the electric blower of the present invention, the air guide forming the volute chamber is entirely formed with a flat surface that is almost the same as the lower end surface of the discharge port of the impeller, so that the air discharged from the impeller is Since the airflow is rectified and guided to the volute chamber, the airflow is made smoother with a simple configuration, reducing vibration and noise, which is extremely effective.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は電動送風機の説明用要部欠截断面図、第2図は
同電動送風機のエアガイドの上面図、第3図は第2図の
A−A’要部断面図、第4図は本発明の一実施例を示す
電動送風機のエアガイドとインペラの組合せ状態の上面
図、第5図は同エアガイドの下面図、第6図は第4図の
B −B’要部断面図である。 1・・・・・ロータ、3・・・・プレート、4 ・・・
・インペラ、5゛°・・・ボリュート室、6・・・ エ
アガイド、6 a °=−平坦面、9°°°°トング。 代理人の氏名 弁理士 中 尾 敏 男 ほか1名第1
図 2図 第3図 第4図 第5図 0 / へ6 561−
Fig. 1 is a cutaway sectional view of the main parts of the electric blower, Fig. 2 is a top view of the air guide of the electric blower, Fig. 3 is a sectional view of the main parts along line AA' in Fig. 2, and Fig. 4 5 is a top view of a combined state of an air guide and an impeller of an electric blower showing an embodiment of the present invention, FIG. 5 is a bottom view of the air guide, and FIG. 6 is a cross-sectional view of essential parts taken along line B-B' in FIG. 4. It is. 1...Rotor, 3...Plate, 4...
・Impeller, 5゛°...Volute chamber, 6... Air guide, 6 a °=-flat surface, 9°°°° tongue. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 4 Figure 5 0 / To 6 561-

Claims (1)

【特許請求の範囲】[Claims] はぼ円錐状のロータの7・ブ面にラジアル方向に多数の
ブレードを設けて構成したインペラと、このインペラの
外周に多数のトングを放射状に設けてポリュートrを形
成したエアガイドと、前記インペラとエアガイドラ覆っ
たファンケーシングとを備え、前記エアガイドには、イ
ンペラの吐出口の下端面とほぼ同一面となる平坦面を形
成した電動送風機。
An impeller configured by providing a large number of blades in the radial direction on the surface of a conical rotor, an air guide in which a large number of tongues are provided radially around the outer periphery of this impeller to form a polute r, and the impeller. and a fan casing covering an air guide, the air guide having a flat surface substantially flush with the lower end surface of the discharge port of the impeller.
JP58046205A 1983-03-18 1983-03-18 Motor fan Pending JPS59170495A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58046205A JPS59170495A (en) 1983-03-18 1983-03-18 Motor fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58046205A JPS59170495A (en) 1983-03-18 1983-03-18 Motor fan

Publications (1)

Publication Number Publication Date
JPS59170495A true JPS59170495A (en) 1984-09-26

Family

ID=12740580

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58046205A Pending JPS59170495A (en) 1983-03-18 1983-03-18 Motor fan

Country Status (1)

Country Link
JP (1) JPS59170495A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0992688A3 (en) * 1998-10-07 2001-01-31 GARDENA Kress + Kastner GmbH Fittings for a household pump
EP1627590A2 (en) * 2004-08-13 2006-02-22 LG Electronics, Inc. Centrifugal fan and vacuum cleaner having the centrifugal fan
CN103557184A (en) * 2013-10-23 2014-02-05 捷和电机制品(深圳)有限公司 Diffuser and motor used for centrifugal ventilation equipment
EP3076025A1 (en) * 2015-04-01 2016-10-05 LG Electronics Inc. Vacuum suction unit
CN106246604A (en) * 2016-07-31 2016-12-21 关亚玲 A kind of low noise cooker hood

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0992688A3 (en) * 1998-10-07 2001-01-31 GARDENA Kress + Kastner GmbH Fittings for a household pump
EP1627590A2 (en) * 2004-08-13 2006-02-22 LG Electronics, Inc. Centrifugal fan and vacuum cleaner having the centrifugal fan
EP1627590A3 (en) * 2004-08-13 2006-06-21 LG Electronics, Inc. Centrifugal fan and vacuum cleaner having the centrifugal fan
CN103557184A (en) * 2013-10-23 2014-02-05 捷和电机制品(深圳)有限公司 Diffuser and motor used for centrifugal ventilation equipment
CN103557184B (en) * 2013-10-23 2016-04-06 捷和电机制品(深圳)有限公司 A kind of Diffuser for centrifugal ventilation equipment and motor
EP3076025A1 (en) * 2015-04-01 2016-10-05 LG Electronics Inc. Vacuum suction unit
CN106246604A (en) * 2016-07-31 2016-12-21 关亚玲 A kind of low noise cooker hood

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