[go: up one dir, main page]

JP4980415B2 - Electric vacuum cleaner - Google Patents

Electric vacuum cleaner Download PDF

Info

Publication number
JP4980415B2
JP4980415B2 JP2009273180A JP2009273180A JP4980415B2 JP 4980415 B2 JP4980415 B2 JP 4980415B2 JP 2009273180 A JP2009273180 A JP 2009273180A JP 2009273180 A JP2009273180 A JP 2009273180A JP 4980415 B2 JP4980415 B2 JP 4980415B2
Authority
JP
Japan
Prior art keywords
vacuum cleaner
centrifugal impeller
electric
bell mouth
inlet guide
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
Application number
JP2009273180A
Other languages
Japanese (ja)
Other versions
JP2011115253A (en
Inventor
奈穂 安達
康明 加藤
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2009273180A priority Critical patent/JP4980415B2/en
Publication of JP2011115253A publication Critical patent/JP2011115253A/en
Application granted granted Critical
Publication of JP4980415B2 publication Critical patent/JP4980415B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • F04D29/444—Bladed diffusers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/50—Inlet or outlet
    • F05D2250/51—Inlet

Landscapes

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

Description

本発明は電気掃除機、特に電気送風機の構造に関するものである。   The present invention relates to a structure of an electric vacuum cleaner, particularly an electric blower.

従来、電気掃除機に用いられる電気送風機と同様の遠心圧縮機において、流入する空気に予め旋回速度を持たせ、高速に回転する遠心羽根車に滑らかに導くため、遠心羽根車の吸込口の流れ方向上流に、入口案内羽根を設置したものがある。（例えば、特許文献１参照）。   Conventionally, in a centrifugal compressor similar to an electric blower used for a vacuum cleaner, the flow of the suction port of the centrifugal impeller is provided in order to give a swirl speed to the inflowing air in advance and smoothly guide it to the centrifugal impeller rotating at high speed. There is one with an inlet guide vane upstream in the direction. (For example, refer to Patent Document 1).

特開２００７−３０９１５４号公報（第５頁、図１）Japanese Patent Laying-Open No. 2007-309154 (5th page, FIG. 1)

従来の遠心圧縮機の入口案内羽根は、遠心羽根車の回転軸に対し、垂直に設置されることが多い。また、電気掃除機に使用される遠心送風機も集塵部を通過した後の空気が前面から流入するので、入口案内羽根は遠心羽根車の回転軸に対して垂直に設置されているため、遠心送風機の前面側風路から吸引される空気が、軸方向から半径方向へ転向する際、入口案内羽根が設置されたベルマウスの表面で鋭角に曲がるため、曲がり損失が生じ、その結果、遠心羽根車の吸込口近傍の通風抵抗が増大、遠心送風機の入力が増大し、効率が低下するという問題があった。
本発明は、上記のような課題を解決するためになされたものであり、電気送風機の流路内の通風抵抗を低減し、低入力で高効率な電気掃除機を得ることを目的とする。 In many cases, the inlet guide vanes of a conventional centrifugal compressor are installed perpendicular to the rotation axis of the centrifugal impeller. Moreover, since the air after passing through the dust collecting part also flows from the front of the centrifugal blower used for the vacuum cleaner, the inlet guide vane is installed perpendicular to the rotating shaft of the centrifugal impeller, so that the centrifugal blower When the air sucked from the airflow path on the front side of the blower turns from the axial direction to the radial direction, it bends at an acute angle on the surface of the bell mouth where the inlet guide vanes are installed, resulting in bending loss, resulting in centrifugal vanes. There was a problem that the ventilation resistance in the vicinity of the suction port of the car increased, the input of the centrifugal blower increased, and the efficiency decreased.
The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a highly efficient vacuum cleaner with low input by reducing ventilation resistance in the flow path of the electric blower.

本発明に係る電気掃除機は、電気掃除機本体と、
前記電気掃除機本体と管路で連結され、被清掃部の空気を吸引する吸込具と、
前記電気掃除機本体の内部に設けられ、前記吸込具と連通し、吸引した空気の塵を収納する集塵部と、
前記電気掃除機本体の内部に設けられ、前記吸込具から前記集塵部へと空気を吸引する電気送風機と、
前記電気掃除機本体の後部に設けられ、前記集塵部で集塵された後の空気を外側へ排出する排出口とを備えた電気掃除機において、
前記電気送風機は、
電動機と、
前記電動機により回転させられ、吸込口を有する遠心羽根車と、
前記電動機と前記遠心羽根車の間に設けられ、遠心羽根車側の複数の静翼、反遠心羽根車側の前記静翼の後縁と一体で形成された前縁を有する戻り静翼及び前記静翼及び戻り静翼を連結する主板と、
前記遠心羽根車と前記主板を内包し、前記遠心羽根車の吸込口の一部を形成するベルマウスを上部に有するファンガイドを備え、
前記ベルマウスは、その上面に径方向の内側と外側との間で斜めに走行するよう立設された複数の入口案内羽根を有し、
前記各入口案内羽根は、前記ベルマウスの上面に接している下端を基点とし、上端が前記遠心羽根車の径方向外側に向けて傾斜し、
前記ベルマウスの吸込口外周上面に設置されている入口案内羽根の鉛直方向の高さが、内周側よりも外周側の方が高くなっているものである。 The vacuum cleaner according to the present invention includes a vacuum cleaner body,
A suction tool that is connected to the main body of the electric vacuum cleaner by a pipe line and sucks air of a portion to be cleaned;
A dust collection unit that is provided inside the vacuum cleaner body, communicates with the suction tool, and stores the sucked air dust;
An electric blower which is provided inside the electric vacuum cleaner body and sucks air from the suction tool to the dust collecting part;
In the vacuum cleaner provided at the rear part of the main body of the vacuum cleaner, and having a discharge port for discharging the air after being collected by the dust collector to the outside,
The electric blower is
An electric motor,
A centrifugal impeller rotated by the electric motor and having a suction port;
A return vane provided between the electric motor and the centrifugal impeller, having a plurality of stationary vanes on the centrifugal impeller side, a leading edge formed integrally with a rear edge of the stationary vane on the anti-centrifugal impeller side, and A main plate connecting the stationary vane and the return vane;
A fan guide including the centrifugal impeller and the main plate, and having a bell mouth on the upper part forming a part of a suction port of the centrifugal impeller;
The bell mouth has a plurality of inlet guide vanes erected on the upper surface so as to run obliquely between the inner side and the outer side in the radial direction,
Each of the inlet guide vanes is based on the lower end in contact with the upper surface of the bell mouth, and the upper end is inclined outward in the radial direction of the centrifugal impeller ,
The height in the vertical direction of the inlet guide vanes installed on the outer peripheral upper surface of the suction mouth of the bell mouth is higher on the outer peripheral side than on the inner peripheral side .

本発明の電気掃除機に使用される電機送風機は、遠心羽根車の吸込口の一部を形成するベルマウスの上面に、径方向の内側と外側との間で斜めに走行するよう立設された複数の入口案内羽根を有し、各入口案内羽根は、ベルマウスの上面に接している下端を基点とし、上端が遠心羽根車の径方向外側に向けて傾斜しているので、入口案内羽根の上部から流入する空気の流れが、入口案内羽根の傾斜している面に沿って滑らかに入口案内羽根の翼間に流入するため、入口案内羽根が設置されたベルマウスの上面で鋭角に曲がることがなく、曲がり損失が低減され、電気送風機の流路内の通風抵抗を低減し、低入力で高効率な電気掃除機を得ることができるという効果がある。   The electric blower used in the vacuum cleaner of the present invention is erected on the upper surface of the bell mouth forming a part of the suction port of the centrifugal impeller so as to run obliquely between the inner side and the outer side in the radial direction. A plurality of inlet guide vanes, each inlet guide vane starting from the lower end in contact with the top surface of the bell mouth, and the upper end is inclined outward in the radial direction of the centrifugal impeller. Since the air flow flowing in from the top of the inlet smoothly flows between the blades of the inlet guide vane along the inclined surface of the inlet guide vane, it bends at an acute angle on the top surface of the bell mouth where the inlet guide vane is installed No bending loss is reduced, ventilation resistance in the flow path of the electric blower is reduced, and a highly efficient vacuum cleaner with low input can be obtained.

本発明の実施の形態に係る電気掃除機の概略を示す構成図。The block diagram which shows the outline of the vacuum cleaner which concerns on embodiment of this invention. 同電気掃除機の電気送風機の鉛直方向に切断した断面図。Sectional drawing cut | disconnected in the perpendicular direction of the electric blower of the vacuum cleaner. 同電気掃除機の電気送風機のベルマウスの部分の斜視図。The perspective view of the bellmouth part of the electric blower of the same vacuum cleaner. 同電気掃除機の電気送風機のベルマウスと入口案内羽根の部分断面図。The fragmentary sectional view of the bell mouth of the electric blower of the same vacuum cleaner and an inlet guide blade. 本発明との比較例の電気掃除機の電気送風機の鉛直方向に切断した断面図。Sectional drawing cut | disconnected in the perpendicular direction of the electric blower of the vacuum cleaner of the comparative example with this invention.

実施の形態．
図１は本発明の実施の形態に係る電気掃除機の概略を示す構成図、図２は同電気掃除機の電気送風機の鉛直方向に切断した断面図、図３は同電気掃除機の電気送風機のベルマウスの部分の斜視図、図４は同電気掃除機の電気送風機のベルマウスと入口案内羽根の部分断面図である。
図１〜図４において、太線矢印および細点線は空気の流れを示している。また、以下の説明では図１のように鉛直方向上方に吸込口が面している状態で説明する。
図１において、本発明の実施の形態の電気掃除機は、電気掃除機本体１と、電気掃除機本体１に接続するホース２と、ホース２に接続する延長パイプ３と延長パイプ３の先端部に取り付ける吸込具４とを有して構成されている。 Embodiment.
FIG. 1 is a configuration diagram showing an outline of a vacuum cleaner according to an embodiment of the present invention, FIG. 2 is a cross-sectional view cut in the vertical direction of the electric blower of the vacuum cleaner, and FIG. 3 is an electric blower of the vacuum cleaner. FIG. 4 is a partial sectional view of the bell mouth and the inlet guide vane of the electric blower of the same vacuum cleaner.
1 to 4, thick arrows and thin dotted lines indicate the flow of air. Moreover, in the following description, it demonstrates in the state which the suction inlet faces vertically upper direction like FIG.
In FIG. 1, a vacuum cleaner according to an embodiment of the present invention includes a vacuum cleaner body 1, a hose 2 connected to the vacuum cleaner body 1, an extension pipe 3 connected to the hose 2, and a distal end portion of the extension pipe 3. It has the suction tool 4 attached to.

電気掃除機本体１の内部には、吸込具４により吸引された空気の塵を集塵し、収納する集塵部５と吸込具４から集塵部５に空気を吸引する電気送風機６とが設けられている。
また、電気掃除機本体１の後方には、集塵部５で集塵された後の空気を電気掃除機本体１の外側へ排出する排出口７が設けられている。
さらに、電気掃除機本体１の側部には走行方向後側に後部車輪８が設けられ、電気掃除機本体１の下部には走行方向前側に前部車輪（図示せず）が設けられている。 Inside the vacuum cleaner body 1, there are a dust collection part 5 for collecting and storing air dust sucked by the suction tool 4, and an electric blower 6 for sucking air from the suction tool 4 to the dust collection part 5. Is provided.
In addition, a discharge port 7 is provided behind the vacuum cleaner main body 1 to discharge the air collected by the dust collector 5 to the outside of the vacuum cleaner main body 1.
Further, a rear wheel 8 is provided on the side of the vacuum cleaner body 1 on the rear side in the running direction, and a front wheel (not shown) is provided on the lower side of the vacuum cleaner body 1 on the front side in the running direction. .

図２は本発明の実施の形態の電気掃除機の電気送風機を示す。
電気送風機６の内部には、電動機９及び電動機９のシャフト１０に固定された遠心羽根車１１が設けられている。
電動機９と遠心羽根車１１の間には遠心羽根車側に複数の静翼１２が設けられ、反遠心羽根車側に複数の戻り静翼１３が設けられている。
さらに、静翼１２及び戻り静翼１３を連結する主板１４を有したディフューザ１５が設けられている。 FIG. 2 shows an electric blower of the electric vacuum cleaner according to the embodiment of the present invention.
Inside the electric blower 6, an electric motor 9 and a centrifugal impeller 11 fixed to the shaft 10 of the electric motor 9 are provided.
Between the electric motor 9 and the centrifugal impeller 11, a plurality of stationary blades 12 are provided on the centrifugal impeller side, and a plurality of return stationary blades 13 are provided on the anti-centrifugal impeller side.
Further, a diffuser 15 having a main plate 14 that connects the stationary blade 12 and the return stationary blade 13 is provided.

遠心羽根車１１の上部には、遠心羽根車１１及びディフューザ１５の静翼１２を内包し、内径が静翼１２の外径よりも大きいファンガイド１６が設けられている。そのファンガイド１６の中央部には、遠心羽根車１１の吸込口１７に対向する位置に、吸込口１７に連通する孔が設けられている。
また、ファンガイド１６の上方には、遠心羽根車１１に流入する空気に予旋回を与える入口案内羽根１８が複数立設され、遠心羽根車１１の吸込口１７の一部を形成するベルマウス１９が設置されている。
ベルマウス１９は、入口案内羽根１８が設置されている上面の鉛直方向高さが、内周側よりも外周側の方が高くなっている。 Above the centrifugal impeller 11, a fan guide 16 that includes the centrifugal impeller 11 and the stationary blade 12 of the diffuser 15 and has an inner diameter larger than the outer diameter of the stationary blade 12 is provided. In the center of the fan guide 16, a hole communicating with the suction port 17 is provided at a position facing the suction port 17 of the centrifugal impeller 11.
A plurality of inlet guide vanes 18 are provided above the fan guide 16 to give a pre-turn to the air flowing into the centrifugal impeller 11 and form a part of the suction port 17 of the centrifugal impeller 11. Is installed.
In the bell mouth 19, the vertical height of the upper surface on which the inlet guide vanes 18 are installed is higher on the outer peripheral side than on the inner peripheral side.

電気送風機６の側面には、ファンガイド１６と連結し、戻り静翼１３を内包するブラケット２０と、ブラケット２０に連結し、電動機９を内包するモータフレーム２１とが設けられている。
ファンガイド１６とディフューザ１５の間には、静翼１２から戻り静翼１３側への流路となる隙間２２が設けられている。 On the side surface of the electric blower 6, there are provided a bracket 20 that is connected to the fan guide 16 and includes the return vane 13, and a motor frame 21 that is connected to the bracket 20 and includes the electric motor 9.
A gap 22 is provided between the fan guide 16 and the diffuser 15 as a flow path from the stationary blade 12 to the stationary blade 13 side.

また、モータフレーム２１には、遠心羽根車１１、ディフューザ１５、電動機９を通過した空気が吐出される吐出孔２３が数箇所設けられている。
遠心羽根車１１は、中心に吸込口１７を有し、円板状のハブ２４と、内径側から外径側にかけて鉛直方向高さが低下する円環状のシュラウド２５と、ハブ２４とシュラウド２５の間の複数の翼２６とを有している。 The motor frame 21 is provided with several discharge holes 23 through which the air that has passed through the centrifugal impeller 11, the diffuser 15, and the electric motor 9 is discharged.
The centrifugal impeller 11 has a suction port 17 at the center, a disc-shaped hub 24, an annular shroud 25 whose vertical height decreases from the inner diameter side to the outer diameter side, and the hub 24 and the shroud 25. And a plurality of wings 26 therebetween.

図３に示すように、ベルマウス１９の上面に、径方向の内側と外側との間で斜めに走行するように複数の入口案内羽根１８が立設されている。
さらに、図４に示すように、各入口案内羽根１８は、ベルマウス１９に接している下端を基点とし、上端が遠心羽根車１１の径方向外側に向けて傾斜している。
また、入口案内羽根１８がベルマウス１９の上面からの鉛直方向に対してなす傾斜角度は、入口案内羽根１８の外周側１８ｂの傾斜角度θ２よりも内周側１８ａの傾斜角度θ１の方が大きくなっている。
さらに、入口案内羽根１８の内周側１８ａよりも外周側１８ｂの方が鉛直方向高さが高くなっている。
また、入口案内羽根１８は弧状に曲げられ、少なくとも円弧を含む面で形成されており、遠心羽根車１１の径方向外側に凸面、径方向内側に凹面を有している。 As shown in FIG. 3, a plurality of inlet guide vanes 18 are erected on the upper surface of the bell mouth 19 so as to run obliquely between the inner side and the outer side in the radial direction.
Further, as shown in FIG. 4, each inlet guide vane 18 has a lower end in contact with the bell mouth 19 as a base point, and an upper end is inclined outward in the radial direction of the centrifugal impeller 11.
Further, the inclination angle of the inlet guide vane 18 with respect to the vertical direction from the upper surface of the bell mouth 19 is larger at the inclination angle θ1 of the inner peripheral side 18a than the inclination angle θ2 of the outer peripheral side 18b of the inlet guide vane 18. It has become.
Further, the height on the outer peripheral side 18b is higher than that on the inner peripheral side 18a of the inlet guide vane 18.
Further, the inlet guide vane 18 is bent in an arc shape and is formed by a surface including at least an arc, and has a convex surface on the radially outer side of the centrifugal impeller 11 and a concave surface on the radially inner side.

次に、本発明の実施の形態の電気掃除機の動作について説明する。
本実施の形態の電気掃除機は、電気送風機６の電動機９に電力が供給されると、シャフト１０が回転することにより、シャフト１０に取付けられた遠心羽根車１１が回転し、吸込口１７から空気を吸引する。
これにより、電気掃除機本体１に連結されたホース２、延長パイプ３、吸込具４を通じて、被清掃面の空気が電気掃除機本体１に吸引される。電気掃除機本体１に吸引された空気は、集塵部５において集塵され、その後電気送風機６のベルマウス１９に設置された入口案内羽根１８に沿って流れることで予旋回を与えられ、遠心羽根車１１の吸込口１７から吸引される。 Next, operation | movement of the vacuum cleaner of embodiment of this invention is demonstrated.
In the electric vacuum cleaner of the present embodiment, when electric power is supplied to the electric motor 9 of the electric blower 6, the centrifugal impeller 11 attached to the shaft 10 rotates due to the rotation of the shaft 10. Aspirate air.
Thereby, the air on the surface to be cleaned is sucked into the vacuum cleaner body 1 through the hose 2, the extension pipe 3, and the suction tool 4 connected to the vacuum cleaner body 1. The air sucked into the main body 1 of the vacuum cleaner is collected in the dust collecting unit 5, and is then given a pre-turn by flowing along the inlet guide vanes 18 installed in the bell mouth 19 of the electric blower 6. The air is sucked from the suction port 17 of the impeller 11.

遠心羽根車１１に吸引された空気は、遠心羽根車１１により昇圧、増速され、旋回しながら径方向外側へ向かう。遠心羽根車１１から吐出された空気の大部分（以下主流２７と呼ぶ）はディフューザ１５の静翼１２の翼間で減速、昇圧される。その後、ディフューザ１５とファンガイド１６との隙間２２を通り、戻り静翼１３により電動機９側に導かれ、電動機９を冷却する。
その後、モータフレーム２１に設けられた吐出孔２３から電気送風機６の外側へ排出され、さらに電気掃除機本体１に設けられた排出口７から電気掃除機本体１の外側へ排出される。
遠心羽根車１１から吐出された空気の残りは、シュラウド２５とファンガイド１６との隙間を通り、ベルマウス１９とシュラウド２５の隙間から吹出され、吸込口１７から再度遠心羽根車１１に吸い込まれる循環流２８となる。 The air sucked into the centrifugal impeller 11 is increased in pressure and accelerated by the centrifugal impeller 11, and travels radially outward while turning. Most of the air discharged from the centrifugal impeller 11 (hereinafter referred to as the main flow 27) is decelerated and boosted between the vanes of the stationary blade 12 of the diffuser 15. Thereafter, the air passes through the gap 22 between the diffuser 15 and the fan guide 16 and is guided to the electric motor 9 side by the return stationary blade 13 to cool the electric motor 9.
Then, it discharges | emits from the discharge hole 23 provided in the motor frame 21 to the outer side of the electric blower 6, and is further discharged | emitted from the discharge port 7 provided in the vacuum cleaner main body 1 to the outer side of the vacuum cleaner main body 1. FIG.
The remainder of the air discharged from the centrifugal impeller 11 passes through the gap between the shroud 25 and the fan guide 16, is blown from the gap between the bell mouth 19 and the shroud 25, and is circulated through the suction port 17 into the centrifugal impeller 11 again. It becomes stream 28.

本発明の実施の形態における電気送風機６は、ベルマウス１９の上面に径方向の内側と外側との間で斜めに走行するよう複数の入口案内羽根１８が立設され、各入口案内羽根１８がベルマウス１９の上面に接している下端を基点とし、上端が遠心羽根車１１の径方向外側に傾斜しているため、入口案内羽根１８に吸込口１７の前面方向から流入する流れは、図４に示すように入口案内羽根１８の傾斜している面に沿って流れ、水平方向速度を有するようになる。
そのため、入口案内羽根１８に鉛直方向上方から流入する流れは、ベルマウス１９における入口案内羽根１８が設置される上面に衝突することなく、傾斜している面に沿って滑らかに流れ、曲がり損失を低減することができる。
また、入口案内羽根１８の翼間を通過する流れは、鉛直方向速度だけでなく、水平方向速度を持つことで、遠心羽根車１１に流入する際の、軸方向（鉛直方向）から半径方向（水平方向）への曲がり損失を低減することができる。 In the electric blower 6 according to the embodiment of the present invention, a plurality of inlet guide vanes 18 are erected on the upper surface of the bell mouth 19 so as to run obliquely between the inner side and the outer side in the radial direction. Since the lower end in contact with the upper surface of the bell mouth 19 is a base point and the upper end is inclined radially outward of the centrifugal impeller 11, the flow flowing into the inlet guide vane 18 from the front side of the suction port 17 is as shown in FIG. As shown in FIG. 4, the air flows along the inclined surface of the inlet guide vane 18 and has a horizontal speed.
Therefore, the flow that flows into the inlet guide vane 18 from above in the vertical direction flows smoothly along the inclined surface without colliding with the upper surface of the bell mouth 19 on which the inlet guide vane 18 is installed. Can be reduced.
Further, the flow passing between the blades of the inlet guide vane 18 has not only a vertical velocity but also a horizontal velocity, so that when flowing into the centrifugal impeller 11 from the axial direction (vertical direction) to the radial direction ( The bending loss in the horizontal direction can be reduced.

また、鉛直方向と入口案内羽根１８がなす角度は、入口案内羽根１８の外周側θ２よりも内周側θ１の方が大きくなっているため、入口案内羽根１８翼間を流れる流れは、遠心羽根車１１の吸込口１７に近づくにつれて徐々に水平方向速度が多くなる。よって急激に流れの方向が変化することなく、滑らかに吸込口１７に流入することができ、さらに流動損失を低減することができる。   Further, the angle formed between the vertical direction and the inlet guide vane 18 is larger on the inner circumferential side θ1 than on the outer circumferential side θ2 of the inlet guide vane 18, so that the flow flowing between the inlet guide vanes 18 is a centrifugal vane. The speed in the horizontal direction gradually increases as it approaches the air inlet 17 of the vehicle 11. Therefore, the flow direction can be smoothly flown into the suction port 17 without abruptly changing the flow direction, and the flow loss can be further reduced.

また、入口案内羽根１８は、内周側１８ａよりも外周側１８ｂの方が鉛直方向高さが高くなっているため、乱れが大きい外周部の空気を効果的に入口案内羽根１８の翼間に集めることができ、流動損失を低減することができる。   In addition, the inlet guide vane 18 has a higher height in the vertical direction on the outer peripheral side 18b than on the inner peripheral side 18a. Can be collected and flow loss can be reduced.

また、入口案内羽根１８は、少なくとも円弧を含む面で形成されており、遠心羽根車１１の径方向外側に凸面、径方向内側に凹面を有しているため、入口案内羽根１８を通過する流れは、遠心羽根車１１の回転方向に予め旋回しながら吸込口１７に滑らかに流入することができ、流動損失を低減することができる。   Further, the inlet guide vane 18 is formed with a surface including at least an arc, and has a convex surface on the radially outer side of the centrifugal impeller 11 and a concave surface on the radially inner side. Can smoothly flow into the suction port 17 while turning in the rotational direction of the centrifugal impeller 11 in advance, and flow loss can be reduced.

以上のように、本発明の実施の形態における電気掃除機の電気送風機６は、流路内の損失を低減し、通風抵抗を低減できるため、低入力で高効率な電気掃除機を得ることができる。   As described above, since the electric blower 6 of the electric vacuum cleaner in the embodiment of the present invention can reduce the loss in the flow path and reduce the ventilation resistance, it is possible to obtain a highly efficient electric vacuum cleaner with low input. it can.

図５は本発明との比較例の電気掃除機の電気送風機の鉛直方向に切断した断面図である。図５において、図１の実施の形態と同様の構成は同一符号を付して重複した構成の説明を省略する。なお、図５中の太線矢印及び細点線は空気の流れを示している。
図５に示すように、この比較例では入口案内羽根１８が設置されているベルマウス１９の面の鉛直方向高さが、外周側と内周側が同一である。
従って、集塵部５を通過した流れが吸込口１７に流入する際、入口案内羽根１８の外周部では流れが鋭角に曲がり、曲がり損失が発生する。 FIG. 5 is a cross-sectional view taken in the vertical direction of an electric blower of a vacuum cleaner of a comparative example with the present invention. In FIG. 5, the same components as those in the embodiment in FIG. In addition, the thick line arrow and thin dotted line in FIG. 5 have shown the flow of air.
As shown in FIG. 5, in this comparative example, the height in the vertical direction of the surface of the bell mouth 19 on which the inlet guide vanes 18 are installed is the same on the outer peripheral side and the inner peripheral side.
Therefore, when the flow that has passed through the dust collecting portion 5 flows into the suction port 17, the flow is bent at an acute angle at the outer peripheral portion of the inlet guide vane 18, and bending loss occurs.

しかし、本発明の実施の形態の電気掃除機の電気送風機のベルマウス１９は、入口案内羽根１８が設置される外周側上面の鉛直方向高さが、内周側よりも外周側の方が高くなっているため、集塵部５を通過した流れを内周側に位置する吸込口１７に滑らかに導くことができ、入口案内羽根１８の外周側１８ａの曲がり損失を低減することができる。
よって、流路内の損失を低減し、通風抵抗を低減できるため、低入力で高効率な電気掃除機を得ることができる。 However, in the bell mouth 19 of the electric blower of the electric vacuum cleaner according to the embodiment of the present invention, the vertical height of the upper surface on the outer peripheral side where the inlet guide vanes 18 are installed is higher on the outer peripheral side than on the inner peripheral side. Therefore, the flow that has passed through the dust collecting portion 5 can be smoothly guided to the suction port 17 located on the inner peripheral side, and the bending loss of the outer peripheral side 18a of the inlet guide vane 18 can be reduced.
Therefore, since the loss in the flow path can be reduced and the ventilation resistance can be reduced, a highly efficient electric vacuum cleaner with low input can be obtained.

また、ベルマウス１９は、ファンガイド１６と別体で形成されているため、高速で回転する遠心羽根車１１を内包するファンガイド１６は金属材料で製造し、入口案内羽根１８を有するベルマウス１９は金属よりも安価な他の材料、例えば樹脂で製造することができ、製造コストを増大させることなく、低入力で高効率な電気掃除機を得ることができる。   Further, since the bell mouth 19 is formed separately from the fan guide 16, the fan guide 16 including the centrifugal impeller 11 that rotates at high speed is made of a metal material, and has the inlet guide blade 18. Can be made of another material cheaper than metal, for example, a resin, and a highly efficient vacuum cleaner with low input can be obtained without increasing the manufacturing cost.

本発明の電気掃除機の電気送風機の活用例として、高い吸込仕事率が必要で、吸込口の前面空間から空気を吸引する電気送風機を使用した家庭用および業務用電気掃除機に使用することができる。
また、本発明の電気掃除機の電気送風機は、吸込口の前面空間から空気を吸引するハンドドライヤー等に使用される高速回転する送風機にも使用することができる。 As an application example of the electric blower of the vacuum cleaner of the present invention, a high suction work rate is required, and it can be used for household and commercial vacuum cleaners using an electric blower that sucks air from the front space of the suction port. it can.
Moreover, the electric blower of the vacuum cleaner of this invention can be used also for the high speed rotating blower used for the hand dryer etc. which attract | suck air from the front space of a suction inlet.

１ 電気掃除機本体、２ ホース、３ 延長パイプ、４ 吸込具、５ 集塵部、６ 電気送風機、７ 排出口、８ 後部車輪、９ 電動機、１０ シャフト、１１ 遠心羽根車、１２ 静翼、１３ 戻り静翼、１４ 主板、１５ ディフューザ、１６ ファンガイド、１７ 吸込口、１８ 入口案内羽根、１８ａ 内周側、１８ｂ 外周側、１９ ベルマウス、２０ ブラケット、２１ モータフレーム、２２ 隙間、２３ 吐出孔、２４ ハブ、２５ シュラウド、２６ 翼、２７ 主流、２８ 循環流。   DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body, 2 Hose, 3 Extension pipe, 4 Suction tool, 5 Dust collection part, 6 Electric blower, 7 Outlet, 8 Rear wheel, 9 Electric motor, 10 Shaft, 11 Centrifugal impeller, 12 Stator blade, 13 Return vane, 14 main plate, 15 diffuser, 16 fan guide, 17 suction port, 18 inlet guide vane, 18a inner circumference side, 18b outer circumference side, 19 bell mouth, 20 bracket, 21 motor frame, 22 clearance, 23 discharge hole, 24 hub, 25 shroud, 26 wings, 27 mainstream, 28 circulating flow.

Claims (5)

電気掃除機本体と、
前記電気掃除機本体と管路で連結され、被清掃部の空気を吸引する吸込具と、
前記電気掃除機本体の内部に設けられ、前記吸込具と連通し、吸引した空気の塵を収納する集塵部と、
前記電気掃除機本体の内部に設けられ、前記吸込具から前記集塵部へと空気を吸引する電気送風機と、
前記電気掃除機本体の後部に設けられ、前記集塵部で集塵された後の空気を外側へ排出する排出口とを備えた電気掃除機において、
前記電気送風機は、
電動機と、
前記電動機により回転させられ、吸込口を有する遠心羽根車と、
前記電動機と前記遠心羽根車の間に設けられ、遠心羽根車側の複数の静翼、反遠心羽根車側の前記静翼の後縁と一体で形成された前縁を有する戻り静翼及び前記静翼及び戻り静翼を連結する主板と、
前記遠心羽根車と前記主板を内包し、前記遠心羽根車の吸込口の一部を形成するベルマウスを上部に有するファンガイドを備え、
前記ベルマウスは、その上面に径方向の内側と外側との間で斜めに走行するよう立設された複数の入口案内羽根を有し、
前記各入口案内羽根は、前記ベルマウスの上面に接している下端を基点とし、上端が前記遠心羽根車の径方向外側に向けて傾斜し、
前記ベルマウスの吸込口外周上面に設置されている入口案内羽根の鉛直方向の高さが、内周側よりも外周側の方が高くなっていることを特徴とする電気掃除機。 The vacuum cleaner body,
A suction tool that is connected to the main body of the electric vacuum cleaner by a pipe line and sucks air of a portion to be cleaned;
A dust collection unit that is provided inside the vacuum cleaner body, communicates with the suction tool, and stores the sucked air dust;
An electric blower which is provided inside the electric vacuum cleaner body and sucks air from the suction tool to the dust collecting part;
In the vacuum cleaner provided at the rear part of the main body of the vacuum cleaner, and having a discharge port for discharging the air after being collected by the dust collector to the outside,
The electric blower is
An electric motor,
A centrifugal impeller rotated by the electric motor and having a suction port;
A return vane provided between the electric motor and the centrifugal impeller, having a plurality of stationary vanes on the centrifugal impeller side, a leading edge formed integrally with a rear edge of the stationary vane on the anti-centrifugal impeller side, and A main plate connecting the stationary vane and the return vane;
A fan guide including the centrifugal impeller and the main plate, and having a bell mouth on the upper part forming a part of a suction port of the centrifugal impeller;
The bell mouth has a plurality of inlet guide vanes erected on the upper surface so as to run obliquely between the inner side and the outer side in the radial direction,
Each of the inlet guide vanes is based on the lower end in contact with the upper surface of the bell mouth, and the upper end is inclined outward in the radial direction of the centrifugal impeller,
The vertical height of the inlet guide vanes installed in the inlet upper surface of an outer periphery of the bell mouth is, the inner circumferential side electric cleaner you characterized in that towards the outer peripheral side is higher than. 電気掃除機本体と、
前記電気掃除機本体と管路で連結され、被清掃部の空気を吸引する吸込具と、
前記電気掃除機本体の内部に設けられ、前記吸込具と連通し、吸引した空気の塵を収納する集塵部と、
前記電気掃除機本体の内部に設けられ、前記吸込具から前記集塵部へと空気を吸引する電気送風機と、
前記電気掃除機本体の後部に設けられ、前記集塵部で集塵された後の空気を外側へ排出する排出口とを備えた電気掃除機において、
前記電気送風機は、
電動機と、
前記電動機により回転させられ、吸込口を有する遠心羽根車と、
前記電動機と前記遠心羽根車の間に設けられ、遠心羽根車側の複数の静翼、反遠心羽根車側の前記静翼の後縁と一体で形成された前縁を有する戻り静翼及び前記静翼及び戻り静翼を連結する主板と、
前記遠心羽根車と前記主板を内包し、前記遠心羽根車の吸込口の一部を形成するベルマウスを上部に有するファンガイドを備え、
前記ベルマウスは、その上面に径方向の内側と外側との間で斜めに走行するよう立設された複数の入口案内羽根を有し、
前記各入口案内羽根は、前記ベルマウスの上面に接している下端を基点とし、上端が前記遠心羽根車の径方向外側に向けて傾斜し、
前記入口案内羽根は、弧状に曲げられ、円弧を含む曲面で構成されていることを特徴とする電気掃除機。 The vacuum cleaner body,
A suction tool that is connected to the main body of the electric vacuum cleaner by a pipe line and sucks air of a portion to be cleaned;
A dust collection unit that is provided inside the vacuum cleaner body, communicates with the suction tool, and stores the sucked air dust;
An electric blower which is provided inside the electric vacuum cleaner body and sucks air from the suction tool to the dust collecting part;
In the vacuum cleaner provided at the rear part of the main body of the vacuum cleaner, and having a discharge port for discharging the air after being collected by the dust collector to the outside,
The electric blower is
An electric motor,
A centrifugal impeller rotated by the electric motor and having a suction port;
A return vane provided between the electric motor and the centrifugal impeller, having a plurality of stationary vanes on the centrifugal impeller side, a leading edge formed integrally with a rear edge of the stationary vane on the anti-centrifugal impeller side, and A main plate connecting the stationary vane and the return vane;
A fan guide including the centrifugal impeller and the main plate, and having a bell mouth on the upper part forming a part of a suction port of the centrifugal impeller;
The bell mouth has a plurality of inlet guide vanes erected on the upper surface so as to run obliquely between the inner side and the outer side in the radial direction,
Each of the inlet guide vanes is based on the lower end in contact with the upper surface of the bell mouth, and the upper end is inclined outward in the radial direction of the centrifugal impeller,
The inlet guide vane is bent in an arc, electric cleaner characterized in that it is a curved surface comprising an arc. 電気掃除機本体と、
前記電気掃除機本体と管路で連結され、被清掃部の空気を吸引する吸込具と、
前記電気掃除機本体の内部に設けられ、前記吸込具と連通し、吸引した空気の塵を収納する集塵部と、
前記電気掃除機本体の内部に設けられ、前記吸込具から前記集塵部へと空気を吸引する電気送風機と、
前記電気掃除機本体の後部に設けられ、前記集塵部で集塵された後の空気を外側へ排出する排出口とを備えた電気掃除機において、
前記電気送風機は、
電動機と、
前記電動機により回転させられ、吸込口を有する遠心羽根車と、
前記電動機と前記遠心羽根車の間に設けられ、遠心羽根車側の複数の静翼、反遠心羽根車側の前記静翼の後縁と一体で形成された前縁を有する戻り静翼及び前記静翼及び戻り静翼を連結する主板と、
前記遠心羽根車と前記主板を内包し、前記遠心羽根車の吸込口の一部を形成するベルマウスを上部に有するファンガイドを備え、
前記ベルマウスは、その上面に径方向の内側と外側との間で斜めに走行するよう立設された複数の入口案内羽根を有し、
前記各入口案内羽根は、前記ベルマウスの上面に接している下端を基点とし、上端が前記遠心羽根車の径方向外側に向けて傾斜し、
前記ベルマウスの前記入口案内羽根が設置されている上面の鉛直方向の高さが、内周側よりも外周側の方が高くなっていることを特徴とする電気掃除機。 The vacuum cleaner body,
A suction tool that is connected to the main body of the electric vacuum cleaner by a pipe line and sucks air of a portion to be cleaned;
A dust collection unit that is provided inside the vacuum cleaner body, communicates with the suction tool, and stores the sucked air dust;
An electric blower which is provided inside the electric vacuum cleaner body and sucks air from the suction tool to the dust collecting part;
In the vacuum cleaner provided at the rear part of the main body of the vacuum cleaner, and having a discharge port for discharging the air after being collected in the dust collecting unit to the outside,
The electric blower is
An electric motor,
A centrifugal impeller rotated by the electric motor and having a suction port;
A return vane provided between the electric motor and the centrifugal impeller, having a plurality of stationary vanes on the centrifugal impeller side, a leading edge formed integrally with a rear edge of the stationary vane on the anti-centrifugal impeller side, and A main plate connecting the stationary vane and the return vane;
A fan guide including the centrifugal impeller and the main plate, and having a bell mouth on the upper part forming a part of a suction port of the centrifugal impeller;
The bell mouth has a plurality of inlet guide vanes erected on the upper surface so as to run obliquely between the inner side and the outer side in the radial direction,
Each of the inlet guide vanes is based on the lower end in contact with the upper surface of the bell mouth, and the upper end is inclined outward in the radial direction of the centrifugal impeller,
The inlet guide vertical height of the upper surface of the blade is installed, an inner peripheral side electric cleaner you characterized in that towards the outer peripheral side is higher than the bell mouth. 前記入口案内羽根は、前記ベルマウスの上面からの鉛直方向に対してなす傾斜角度は、外周側よりも内周側の方が傾斜角度が大きいことを特徴とする請求項１〜３のいずれかに記載の電気掃除機。 The inclination angle which the said inlet guide blade | wing makes with respect to the perpendicular direction from the upper surface of the said bellmouth has a larger inclination angle in the inner peripheral side than in the outer peripheral side . The vacuum cleaner as described in. 前記ベルマウスは前記ファンガイドとは別体で形成されたことを特徴とする請求項１〜４のいずれかに記載の電気掃除機。 Vacuum cleaner according to any one of claims 1 to 4, wherein the bell mouth, characterized in that the the said fan guide are formed separately.
JP2009273180A 2009-12-01 2009-12-01 Electric vacuum cleaner Expired - Fee Related JP4980415B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009273180A JP4980415B2 (en) 2009-12-01 2009-12-01 Electric vacuum cleaner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009273180A JP4980415B2 (en) 2009-12-01 2009-12-01 Electric vacuum cleaner

Publications (2)

Publication Number Publication Date
JP2011115253A JP2011115253A (en) 2011-06-16
JP4980415B2 true JP4980415B2 (en) 2012-07-18

Family

ID=44281323

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009273180A Expired - Fee Related JP4980415B2 (en) 2009-12-01 2009-12-01 Electric vacuum cleaner

Country Status (1)

Country Link
JP (1) JP4980415B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103671268A (en) * 2012-08-30 2014-03-26 东普雷股份有限公司 Air supply unit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013104849A1 (en) * 2012-06-20 2013-12-24 Vorwerk & Co. Interholding Gmbh Fan wheel and electric motor
JP6636150B2 (en) * 2016-06-28 2020-01-29 三菱電機株式会社 Electric blowers and vacuum cleaners

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4872752U (en) * 1971-12-10 1973-09-11
JPH02107799U (en) * 1989-02-13 1990-08-28
JP3794098B2 (en) * 1997-01-31 2006-07-05 株式会社デンソー Centrifugal blower
JPH1199097A (en) * 1997-09-29 1999-04-13 Matsushita Electric Ind Co Ltd Electric vacuum cleaner
JP2007211708A (en) * 2006-02-10 2007-08-23 Matsushita Electric Ind Co Ltd Electric blower and electric vacuum cleaner using the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103671268A (en) * 2012-08-30 2014-03-26 东普雷股份有限公司 Air supply unit

Also Published As

Publication number Publication date
JP2011115253A (en) 2011-06-16

Similar Documents

Publication Publication Date Title
TWI394895B (en) Centrifugal fans and air fluid machinery using the centrifugal fan
JP4867596B2 (en) Electric blower and electric vacuum cleaner using the same
JP2008121589A5 (en)
JP5522306B1 (en) Centrifugal fan
US10774841B2 (en) Fan motor assembly and vacuum cleaner having the same
CN101187383A (en) Turbo fan and air conditioner with the turbo fan
JP6636150B2 (en) Electric blowers and vacuum cleaners
JP6250145B2 (en) Centrifugal blower and vacuum cleaner
KR20070101642A (en) Turbo fan
WO2018083783A1 (en) Electrically operated air blower, electric vacuum cleaner, and hand dryer
KR100421382B1 (en) Turbo fan
JP4980415B2 (en) Electric vacuum cleaner
JP6422596B2 (en) Electric blower and vacuum cleaner
JP5784066B2 (en) Centrifugal impeller, electric blower and vacuum cleaner
JP6695419B2 (en) Electric blower and vacuum cleaner
JP2010249035A (en) Electric blower and electric vacuum cleaner using the same
CN212225567U (en) Air duct system components and their fixed impellers
JP5246006B2 (en) Electric blower and electric vacuum cleaner using the same
JP2011064096A (en) Electric blower and vacuum cleaner using the same
JP4140086B2 (en) Electric blower
JP4625722B2 (en) Electric blower and vacuum cleaner equipped with the same
KR100445647B1 (en) A centrifugal fan of vacuum cleaner
KR20090005215U (en) Turbo Fans and Air Conditioners with the Same
KR100469259B1 (en) Blade of turbo fan
KR100442271B1 (en) turbofan structure

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20111024

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20111101

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20111228

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20120321

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20120418

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20150427

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 4980415

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees