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JPH06100195B2 - Electric blower - Google Patents

Electric blower

Info

Publication number
JPH06100195B2
JPH06100195B2 JP15624689A JP15624689A JPH06100195B2 JP H06100195 B2 JPH06100195 B2 JP H06100195B2 JP 15624689 A JP15624689 A JP 15624689A JP 15624689 A JP15624689 A JP 15624689A JP H06100195 B2 JPH06100195 B2 JP H06100195B2
Authority
JP
Japan
Prior art keywords
motor
exhaust port
centrifugal fan
diffuser
fan
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
Application number
JP15624689A
Other languages
Japanese (ja)
Other versions
JPH0323399A (en
Inventor
誠 岩竹
隆夫 樽谷
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP15624689A priority Critical patent/JPH06100195B2/en
Publication of JPH0323399A publication Critical patent/JPH0323399A/en
Publication of JPH06100195B2 publication Critical patent/JPH06100195B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【発明の詳細な説明】 (イ)産業上の利用分野 本発明は水分を含んだ空気を吸引することのできる、所
謂ウェット型の電動送風機に関する。
The present invention relates to a so-called wet type electric blower capable of sucking air containing water.

(ロ)従来の技術 此種ウェット型の電動送風機は、例えば、実開昭56−63
52号公報に示されるようにファンカバーの側面から水分
を含んだ空気を排気するように構成されている。そのた
め、従来は例えば、第3図〜第5図に示すように遠心フ
ァン(12)とディフューザー(15)を覆ってモータ
(2)のモーターフレーム(4)に取り付けられたファ
ンカバー(40)の側面には複数個の四角状排気口(41)
…が設けられ、遠心ファン(12)から排出された空気流
はディフューザー(15)の外周部分を通過し、四角状排
気口(41)…から排気されるようになっていた。ここ
で、前記ディフューザー(15)の外周部分に所定間隔を
おいて形成される傾斜翼部(24)…により傾斜通路(2
5)…を構成し、この傾斜通路(25)により空気流を動
圧から静圧に変換して排気しようとするものにおいて
は、第4図に示すように傾斜翼部(24)が前記四角状排
気口(41)の中央部分を横切って配置され、空気流は傾
斜翼部(24)のモーターフレーム(4)側を通過する空
気流(X)と遠心ファン(12)側を通過する空気流
(Y)とに2分され、遠心ファン(12)側を通過する空
気流(Y)は傾斜通路(25)を殆んど通過しないで四角
状排気口(41)から外部に排気されるので十分に静圧化
されず、吸込効率が悪くなる欠点がある。また第5図に
示すように、傾斜翼部(24)が四角状排気口(41)を横
切らないように配置すると、傾斜翼部(24)と四角状排
気口(41)との間に溜り場所が形成されてファンカバー
(40)が排気抵抗となり、円滑に排気が行なわれず、特
性が低下する欠点がある。また風切り音を発生する危惧
もある。
(B) Prior art Wet type electric blowers of this type are disclosed in, for example,
As disclosed in Japanese Patent Laid-Open No. 52-52, the air containing water is exhausted from the side surface of the fan cover. Therefore, conventionally, for example, as shown in FIG. 3 to FIG. 5, a fan cover (40) attached to the motor frame (4) of the motor (2) so as to cover the centrifugal fan (12) and the diffuser (15) is used. Sides with multiple square vents (41)
Is provided, and the air flow discharged from the centrifugal fan (12) passes through the outer peripheral portion of the diffuser (15) and is discharged from the square exhaust port (41). Here, the inclined passage (2) is formed by the inclined blade portions (24) formed at a predetermined interval on the outer peripheral portion of the diffuser (15).
5) ..., in which the inclined passage (25) converts the air flow from dynamic pressure to static pressure to exhaust the air, the inclined blade portion (24) has the square shape as shown in FIG. The air flow is arranged so as to cross the central portion of the air exhaust port (41), and the air flow is the air flow (X) passing through the motor frame (4) side of the inclined blade portion (24) and the air passing through the centrifugal fan (12) side. The air flow (Y), which is divided into a flow (Y) and passes through the centrifugal fan (12) side, is exhausted to the outside from the square exhaust port (41) with almost no passage through the inclined passage (25). Therefore, there is a drawback that the static pressure is not sufficiently reduced and the suction efficiency is deteriorated. Further, as shown in FIG. 5, when the inclined blade portion (24) is arranged so as not to cross the square exhaust port (41), the accumulation is generated between the inclined blade portion (24) and the square exhaust port (41). A space is formed and the fan cover (40) serves as an exhaust resistance, so that the exhaust is not smoothly performed and the characteristics are deteriorated. There is also the fear that wind noise will be generated.

(ハ)発明が解決しようとする課題 本発明は、水分を含んだ空気を吸引することのできるウ
ェット型の電動送風機において、簡単な構成で吸込効率
の高い、また異常音の発生のない電動送風機を得ること
を目的としている。
(C) Problem to be Solved by the Invention The present invention relates to a wet type electric blower capable of sucking air containing moisture, which has a simple structure, high suction efficiency, and no abnormal noise. The purpose is to get.

(ニ)課題を解決するための手段 本発明の電動送風機は、モーターと、該モーターの回転
軸に固着された遠心ファンと、該遠心ファンと前記モー
ターとの間に配設されたディフューザーと、中央に吸気
口を、側面に複数の排気口を夫々有し、前記遠心ファン
及び前記ディフューザーを覆って前記モーターのモータ
ーフレームに取り付けられるファンカバーとを備え、前
記ディフューザーは外周部分に一側面側から他側面側に
向かって傾斜した複数の傾斜翼部を所定間隔をおいて形
成すると共に隣り合う傾斜翼部の間に前記排気口に連通
する傾斜通路を形成し、前記排気口は、前記傾斜翼部の
ファンカバー当接面に沿った斜め開口縁を有したことを
特徴としている。
(D) Means for Solving the Problems The electric blower of the present invention includes a motor, a centrifugal fan fixed to a rotation shaft of the motor, and a diffuser disposed between the centrifugal fan and the motor. An air inlet is provided in the center and a plurality of air outlets are provided on the side surfaces, and a fan cover that covers the centrifugal fan and the diffuser and is attached to the motor frame of the motor is provided. A plurality of inclined wing portions inclined toward the other side surface are formed at a predetermined interval, and an inclined passage communicating with the exhaust port is formed between adjacent inclined wing portions, and the exhaust port is the inclined blade. It is characterized by having an oblique opening edge along the fan cover contact surface of the portion.

(ホ)作用 上記の構成により、モーターの駆動により遠心ファンが
高速回転し、ファンカバーの吸気口から空気を吸い込
み、遠心ファンの外周部から抜射方向に排出された空気
流は、ディフューザー外周部分に形成された傾斜通路に
より動圧を静圧に変換された後、排気口から排気される このとき、前記排気口は、前記傾斜通路を形成する傾斜
翼部に沿った斜め開口縁を有しているので、空気流が前
記傾斜通路と排気口との間で溜ったりすることなくスム
ーズに排気口から排気され、従って吸込効率の低下や異
常音の発生がない。
(E) Action With the above configuration, the centrifugal fan rotates at high speed by driving the motor, sucks air from the intake port of the fan cover, and the airflow discharged from the outer peripheral portion of the centrifugal fan in the ejection direction is the outer peripheral portion of the diffuser. The dynamic pressure is converted to static pressure by the inclined passage formed in the exhaust passage and then exhausted from the exhaust port. At this time, the exhaust port has an oblique opening edge along the inclined blade portion forming the inclined passage. Therefore, the airflow is smoothly discharged from the exhaust port without accumulating between the inclined passage and the exhaust port, so that the suction efficiency is not lowered and abnormal noise is not generated.

(ヘ)実施例 以下、本発明電動送風機の構成を第1図〜第2図に示す
実施例に従って説明する。
(F) Example Hereinafter, the configuration of the electric blower of the present invention will be described with reference to the examples shown in FIGS. 1 and 2.

(1)は水分を含む空気を吸引することのできるウェッ
ト型の電動送風機で、後部にモーター(2)を備えてい
る。前記モーター(2)は後ケース(3)と該後ケース
(3)の前方開口を閉塞するモーターフレーム(4)か
ら構成されたモーターケース(5)内に、ロータやステ
ータを内装し、後ケース(3)から後方に突出した後方
回転軸(6)に冷却用ファン(7)を軸着してある。前
記後ケース(3)の底面には前記冷却用ファン(7)に
対向して冷却空気入口(8)が、側面には冷却空気出口
(9)が形成され、前記冷却用ファン(7)の回転によ
り冷却用空気がモーターケース(5)内を通過するよう
になっている。
(1) is a wet type electric blower capable of sucking air containing water, and has a motor (2) at the rear part. The motor (2) includes a rear case (3) and a motor frame (4) configured to close a front opening of the rear case (3), and a rotor and a stator are housed in the motor case (5). A cooling fan (7) is mounted on a rear rotary shaft (6) protruding rearward from (3). A cooling air inlet (8) is formed on the bottom surface of the rear case (3) so as to face the cooling fan (7), and a cooling air outlet (9) is formed on the side surface of the rear case (3). The rotation allows cooling air to pass through the motor case (5).

前記モーターフレーム(4)は、円盤形状であって、周
縁部に環状係合鍔(10)を形成すると共に、中央の軸受
保持部からモーター(2)の前方回転軸(11)を前方に
突出して軸支している。
The motor frame (4) has a disk shape, and has an annular engaging collar (10) formed on the peripheral edge thereof, and the front rotary shaft (11) of the motor (2) is projected forward from the central bearing holding portion. Is pivotally supported.

(12)は前記前方回転軸(11)先端に固着される遠心フ
ァンで、高速回転により中央開口(13)から空気を吸い
込み周囲開口(14)から空気を放射方向に排出する。
(12) is a centrifugal fan fixed to the tip of the front rotary shaft (11), which sucks air from the central opening (13) and discharges the air radially from the peripheral opening (14) by high speed rotation.

(15)は前記モーターフレーム(4)に締付螺子で締付
固定されて前記遠心ファン(12)と前記モーター(2)
との間に配設される円盤状の合成樹脂製ディフューザー
である。
(15) is fixed to the motor frame (4) with a tightening screw so that the centrifugal fan (12) and the motor (2)
And a disk-shaped diffuser made of synthetic resin.

(16)は前記遠心ファン(12)及び前記ディフューザー
(15)を覆って前記モーターフレーム(4)に取り付け
られる金属製ファンカバーで、中央に吸気口(17)を有
すると共に周側面(18)に複数個の排気口(19)…を所
定間隔毎に有し、前記周側面(18)の後部係合縁(20)
を前記環状係合鍔(10)に圧入して固定するようになっ
ている。
(16) is a metal fan cover that is attached to the motor frame (4) to cover the centrifugal fan (12) and the diffuser (15) and has an intake port (17) in the center and a peripheral side surface (18). Having a plurality of exhaust ports (19) at predetermined intervals, the rear side engaging edge (20) of the peripheral side surface (18)
Is press-fitted and fixed to the annular engaging collar (10).

前記ディフューザー(15)において、該ディフューザー
(15)の前記遠心ファン(12)に対向する表面側の一側
面(21)は平板状に形成され、中央部には前記モーター
フレーム(4)の軸受保持部を遊貫する軸受孔が穿設さ
れている。
In the diffuser (15), one side surface (21) of the diffuser (15) on the surface side facing the centrifugal fan (12) is formed in a flat plate shape, and a bearing for the motor frame (4) is held in the central portion. A bearing hole is bored through the portion.

このディフューザー(15)の外周部分には所定間隔をお
いて該外周部分に沿って垂直状に一側面(21)側から他
側面(22)側に向かって複数の外周縁(23)…が連続し
て形成され、これらの外周縁(23)…の外面には一側面
(21)側から他側面(22)側に向かって傾斜した複数の
傾斜翼部(24)…が形成され、これらの隣り合う傾斜翼
部(24)(24)の間に、前記外周縁(23)と前記ファン
カバー(16)の周側面(18)との間で囲まれる傾斜通路
(25)…を夫々形成している。
At the outer peripheral portion of the diffuser (15), a plurality of outer peripheral edges (23) are continuously arranged vertically from the one side surface (21) side to the other side surface (22) side at predetermined intervals. Formed on the outer peripheral edge (23) of the outer peripheral edge (23), a plurality of inclined blade portions (24) inclined from one side surface (21) side toward the other side surface (22) side are formed. Inclined passages (25), which are surrounded by the outer peripheral edge (23) and the peripheral side surface (18) of the fan cover (16), are formed between the adjacent inclined blade portions (24) (24), respectively. ing.

さらに前記傾斜翼部(24)の前記一側面(21)側には一
側面(21)周縁に沿う平板状の天板部(26)を形成して
おり、前記天板部(26)で始端側の一部を覆われた前記
傾斜通路(25)がボリユート室を形成している。
Further, a flat plate-shaped top plate portion (26) is formed along the periphery of the one side face (21) on the side face (21) side of the inclined wing portion (24), and the top end portion (26) starts the end. The inclined passage (25) partially covered on the side forms a volute chamber.

また、前記排気口(19)は、第2図に示すように前記傾
斜翼部(24)のファンカバー当接面(24a)に沿って屈
曲した形状の斜め開口縁(27)を一辺に有し、この斜め
開口縁(27)により四角状の開口縁の一部を閉塞する形
状の全体開口縁(28)を有しており、前記斜め開口縁
(27)を前記傾斜翼部(24)に沿わせて配置することに
より、前記傾斜翼部(24)のモーターフレーム(4)側
を前記斜め開口縁(27)に滑らかに連続させて前記傾斜
通路(25)を排気口(19)に連通させている。
Further, as shown in FIG. 2, the exhaust port (19) has an oblique opening edge (27) on one side that is bent along the fan cover contact surface (24a) of the inclined blade portion (24). The diagonal opening edge (27) has an overall opening edge (28) that closes a part of the square opening edge, and the oblique opening edge (27) is formed into the inclined blade portion (24). By arranging the inclined passage (25) to the exhaust port (19) by smoothly connecting the side of the inclined blade (24) to the motor frame (4) to the oblique opening edge (27). It is in communication.

而して電動送風機(1)を駆動すると、遠心ファン(1
2)が高速回転して水分を含んだ空気をファンカバー(1
6)の吸気口(17)から吸い込み、遠心ファン(12)の
周囲開口(14)から空気を放射方向に排出する。この排
出された空気流は、ディフューザー(15)の一側面(2
1)からボリュート室を構成する傾斜通路(25)…を介
して排気口(19)…から排気される。
When the electric blower (1) is driven, the centrifugal fan (1
2) rotates at a high speed to blow air containing moisture into the fan cover (1
Air is sucked in through the intake port (17) of 6), and air is radially discharged through the peripheral opening (14) of the centrifugal fan (12). This discharged air flow is transferred to one side (2) of the diffuser (15).
1) is exhausted from the exhaust port (19) through the inclined passages (25) forming the volute chamber.

このとき、前記排気口(19)…は前記傾斜通路(25)…
を形成する傾斜翼部(24)…に沿った斜め開口縁(27)
を一辺とする全体開口縁(28)を有しているので、排出
される空気流が前記傾斜通路(25)と排気口(19)との
間で溜ったりすることなくスムーズに排気口(19)から
排気される。従って遠心ファン(12)から排出された全
ての空気流がディフューザー(15)の傾斜通路(25)を
通過して動圧から静圧に変換された後、スムーズに排気
口(19)から排気され、故に電動送風機(1)の吸込効
率が向上し、また空気流の溜り等に伴なう異常な風切音
の発生がない。さらに排気口(19)面積が従来の四角状
排気口に比較して小さくなるので、ファンカバー(16)
の強度が増加する。
At this time, the exhaust ports (19) ...
Slanted opening edge (27) along the inclined wing part (24) that forms the
Since it has an entire opening edge (28) whose one side is, the exhaust air flow (19) does not accumulate the exhausted air flow between the inclined passage (25) and the exhaust air port (19). ) Is exhausted from. Therefore, after all the air flow discharged from the centrifugal fan (12) passes through the inclined passage (25) of the diffuser (15) and is converted from dynamic pressure to static pressure, it is smoothly discharged from the exhaust port (19). Therefore, the suction efficiency of the electric blower (1) is improved, and no abnormal wind noise is generated due to the accumulation of air flow. Furthermore, the area of the exhaust port (19) is smaller than that of the conventional square exhaust port, so the fan cover (16)
Increases the strength of.

(ト)発明の効果 本発明の電動送風機は以上の如く構成しており、特にフ
ァンカバーの排気口の開口縁形状を、ディフューザーの
傾斜翼部のファンカバー当接面に沿った斜め開口縁を有
する形状としたので、全ての空気流が傾斜通路を通過し
た後スムーズに排気口から排気され、従ってファンカバ
ーの簡単な形状変更により吸込効率を向上させると共
に、排気口部分における風切音等の異常音の発生しない
ウェット型の電動送風機を得ることができる。
(G) Effect of the Invention The electric blower of the present invention is configured as described above, and in particular, the opening edge shape of the exhaust port of the fan cover is set to be an oblique opening edge along the fan cover contact surface of the inclined blade portion of the diffuser. Since it has a shape, all the air flow is smoothly exhausted from the exhaust port after passing through the inclined passages. Therefore, a simple change of the shape of the fan cover improves the suction efficiency, and the wind noise at the exhaust port part, etc. It is possible to obtain a wet type electric blower that does not generate abnormal noise.

【図面の簡単な説明】[Brief description of drawings]

第1図は本発明電動送風機の実施例の一部切欠側面図、
第2図は同要部拡大側面図、第3図は従来例の一部切欠
側面図、第4図は第3図の要部拡大側面図、第5図は第
3図の他の状態の要部拡大側面図である。 (2)…モーター、(4)…モーターフレーム、(12)
…遠心ファン、(15)…ディフューザー、(16)…ファ
ンカバー、(19)…排気口、(24)…傾斜翼部、(25)
…傾斜通路、(27)…斜め開口縁。
FIG. 1 is a partially cutaway side view of an embodiment of the electric blower of the present invention,
2 is an enlarged side view of the relevant part, FIG. 3 is a partially cutaway side view of the conventional example, FIG. 4 is an enlarged side view of the essential part of FIG. 3, and FIG. 5 is another state of FIG. It is a principal part enlarged side view. (2) ... motor, (4) ... motor frame, (12)
... Centrifugal fan, (15) ... Diffuser, (16) ... Fan cover, (19) ... Exhaust port, (24) ... Inclined blade, (25)
… Sloping passage, (27)… Slant opening edge.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】モーターと、該モーターの回転軸に固着さ
れた遠心ファンと、該遠心ファンと前記モーターとの間
に配設されたディフューザーと、中央に吸気口を、側面
に複数の排気口を夫々有し、前記遠心ファン及び前記デ
ィフューザーを覆って前記モーターのモーターフレーム
に取り付けられるファンカバーとを備え、前記ディフュ
ーザーは外周部分に一側面側から他側面側に向かって傾
斜した複数の傾斜翼部を所定間隔をおいて形成すると共
に隣り合う傾斜翼部の間に前記排気口に連通する傾斜通
路を形成し、前記排気口は、前記傾斜翼部のファンカバ
ー当接面に沿った斜め開口縁を有したことを特徴とする
電動送風機。
1. A motor, a centrifugal fan fixed to a rotary shaft of the motor, a diffuser disposed between the centrifugal fan and the motor, an intake port in the center, and a plurality of exhaust ports on the side surface. And a fan cover that covers the centrifugal fan and the diffuser and is attached to the motor frame of the motor. Portions are formed at a predetermined interval, and an inclined passage communicating with the exhaust port is formed between adjacent inclined blade portions, and the exhaust port is an oblique opening along the fan cover contact surface of the inclined blade portion. An electric blower characterized by having an edge.
JP15624689A 1989-06-19 1989-06-19 Electric blower Expired - Lifetime JPH06100195B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15624689A JPH06100195B2 (en) 1989-06-19 1989-06-19 Electric blower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15624689A JPH06100195B2 (en) 1989-06-19 1989-06-19 Electric blower

Publications (2)

Publication Number Publication Date
JPH0323399A JPH0323399A (en) 1991-01-31
JPH06100195B2 true JPH06100195B2 (en) 1994-12-12

Family

ID=15623577

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15624689A Expired - Lifetime JPH06100195B2 (en) 1989-06-19 1989-06-19 Electric blower

Country Status (1)

Country Link
JP (1) JPH06100195B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2438039A (en) * 2004-11-04 2007-11-14 Matsushita Electric Ind Co Ltd Electric blower

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2705343B2 (en) * 1991-04-09 1998-01-28 三菱電機株式会社 Electric blower
US6166462A (en) * 1998-05-04 2000-12-26 Ametek, Inc. Bypass motor/fan assembly having separate working air passages
US6439843B1 (en) 2000-11-16 2002-08-27 Ametek, Inc. Motor/fan assembly having a radial diffuser bypass

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2438039A (en) * 2004-11-04 2007-11-14 Matsushita Electric Ind Co Ltd Electric blower
GB2438039B (en) * 2004-11-04 2011-09-21 Matsushita Electric Ind Co Ltd Electric blower

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