JPS6013996A - Fan - Google Patents

Fan

Info

Publication number
JPS6013996A
JPS6013996A JP12182683A JP12182683A JPS6013996A JP S6013996 A JPS6013996 A JP S6013996A JP 12182683 A JP12182683 A JP 12182683A JP 12182683 A JP12182683 A JP 12182683A JP S6013996 A JPS6013996 A JP S6013996A
Authority
JP
Japan
Prior art keywords
impeller
suction port
fan case
axial flow
outer diameter
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
JP12182683A
Other languages
Japanese (ja)
Inventor
Masami Fukumoto
正美 福本
Kunihito Mori
森 国人
Mikio Yamaoka
山岡 三喜男
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 JP12182683A priority Critical patent/JPS6013996A/en
Publication of JPS6013996A publication Critical patent/JPS6013996A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To obtain the fan with a high ventilating efficiency by a method wherein an axial flow impeller is provided coaxially at the suction port of a fan case covering a centrifugal impeller and the outer diameter of the axial flow impeller as well as the diameter of the suction port of fan case are specified. CONSTITUTION:The centrifugal impeller 10 is attached to the shaft 9 of a motor 8 and an air guide 11 is arranged around the impeller 10 while the fan case 12 is provided so as to cover those equipments. The axial flow impeller 14 is fixed to said shaft 9 at the suction port 13 of the fan case 12. Further, the outer diameter Da of the axial flow impeller 14 is designed so as to be in the relation of Dc> Da>0.85Dc, here, Dc shows the diameter of the suction port 13 of the fan case 12. According to this method, air stream flows into the centrifugal impeller smoothly.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は真空掃除機などに使用する真空圧発生用の送風
機に関するものである。
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a blower for generating vacuum pressure used in vacuum cleaners and the like.

従来例の構成とその問題点 従来、この種の送風機においては第1図に示すように、
モータ1のモータ軸2に遠心羽根車3をナツト4を介し
て取シ付け、さらに上記遠心羽根車3の周囲にエアーガ
イド5を配し、それらを覆ってファンケース6を設けて
いるのが一般的であった。
Conventional configuration and its problems Traditionally, this type of blower has the following configurations, as shown in Figure 1:
A centrifugal impeller 3 is attached to the motor shaft 2 of the motor 1 via a nut 4, an air guide 5 is arranged around the centrifugal impeller 3, and a fan case 6 is provided to cover them. It was common.

こういった従来の送風機において、送風効率を高めるべ
く改良を行う場合は、主に遠心羽根車3やエアガイド5
の形状について行われており、送風機の吸込ロアの周辺
については特に工夫がなされていないというのが現状で
あった。
When improving these conventional blowers to increase the blowing efficiency, the main steps are to improve the centrifugal impeller 3 and air guide 5.
The current situation is that no special efforts have been made around the suction lower of the blower.

発明の目的 本発明は、このような従来の送風機において、特には工
夫がなされていなかった吸込口周辺の空気の流れをスム
ーズにし、送風効率の高い送風機を提供しようとするも
のである。
OBJECTS OF THE INVENTION The present invention aims to provide a blower with high air blowing efficiency by smoothing the flow of air around the suction port, which has not been particularly devised in such conventional blowers.

発明の構成 本発明の送風機は、遠心羽根車を覆うファンケースの吸
込口に軸流羽根車を同遠心羽根と同軸に固定し上記軸流
羽根車の外径をDa、ファンケースの吸込口径をDCと
したとき、Dc)Da)0.85 Daの関係に設定し
て所期の目的を達成したものである。
Structure of the Invention In the blower of the present invention, an axial impeller is coaxially fixed to the suction port of a fan case that covers the centrifugal impeller, and the outer diameter of the axial impeller is Da, and the suction aperture of the fan case is The intended purpose was achieved by setting the relationship of Dc) Da) 0.85 Da when DC.

実施例の説明 以下、添付図面にもとづいて本発明の実施例について説
明する。第2図に−おいて、8はモータであり、この軸
9に遠心羽根車1Qが取ジ付けである。遠心羽根車10
の周囲にはエアガイド11を配踵これらを覆うようにし
てファンケ“−ス12を設け、かつ、このファンケース
12の吸込口13にはIIQt+流羽根車14が上記軸
9にナラ) 15 +略円錐状案内ガイド16およびス
ペーサ17を介して固定しである。
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on the accompanying drawings. In FIG. 2, 8 is a motor, and a centrifugal impeller 1Q is attached to this shaft 9 by screws. Centrifugal impeller 10
15 It is fixed via a substantially conical guide 16 and a spacer 17.

そして上記軸流羽根車14ば、その外径Da、がファン
ケース12の吸込口13の径DCと、DC>Da)0.
85Da の関係にある構成をしている。
The outer diameter Da of the axial impeller 14 is equal to the diameter DC of the suction port 13 of the fan case 12 (DC>Da)0.
The structure has a relationship of 85 Da.

上記構成において動作を説明する。軸9の回軸により空
気は吸込口13から吸い込まれるのであるが、遠心羽根
車1oだけの作用では気流を軸9に直角の方向に流す力
が主であシ、吸込口13におけるモータ軸9に平行な方
向へは弱いものであったのが、軸流羽根車14の作用に
より軸9に平行な方向へも空気をスムースに流すことが
できるようになるのである。
The operation in the above configuration will be explained. Air is sucked in from the suction port 13 by the rotation of the shaft 9, but the action of the centrifugal impeller 1o alone produces a force that causes the airflow to flow in a direction perpendicular to the shaft 9, and the motor shaft 9 at the suction port 13 Although the flow was weak in the direction parallel to the axis 9, the action of the axial flow impeller 14 now allows air to flow smoothly in the direction parallel to the axis 9 as well.

このことにより、送風機としては吸込口13付近におい
て軸9に平行な方向へは軸流羽根車14が導き、モータ
軸9に直角な方向へは遠心羽根車10が気流を導くとい
った分担関係ができて、従来のような遠心羽根車だけで
成り立っている送風機に比べ送風効率を大巾に向上させ
ることができ一ス12における吸込口13の径Dc に
近い方が空気を導く機能は高く、同外径Daが小さくな
ってしまうと、吸込口13の径Dc と軸流羽根車14
の外径D2L との間にある空気が導かれなくなり、か
つ、軸流羽根車14を設けることによるモータ負荷が増
大することとの約9合いから、第3図のグラフから明ら
かなようにDa>o、5sDcの時に送風効率の向上が
得られる。第3図において、ヂ。
As a result, the blower has a sharing relationship in which the axial impeller 14 guides airflow in a direction parallel to the shaft 9 near the suction port 13, and the centrifugal impeller 10 guides airflow in a direction perpendicular to the motor shaft 9. As a result, the air blowing efficiency can be greatly improved compared to a conventional blower that is made up of only a centrifugal impeller. If the outer diameter Da becomes small, the diameter Dc of the suction port 13 and the axial flow impeller 14
As is clear from the graph in FIG. 3, Da > o, 5 sDc, the air blowing efficiency can be improved. In Figure 3, ji.

は送風効率、点線は軸流羽根車の無い時の(T、実線は
軸流羽根車の外径Da と送風効率の関係を示すO 発明の効果 上記実施例から明らかなように本発明の送風機では、特
に、吸込口にその外径Da が吸込口径DcとDa) 
0 、85 DCの関係にある軸流羽根車を設けること
により、吸込口において軸流羽根車がモータの軸に平行
な方向に気流を導き、かつ軸流羽根車を設けることによ
る負荷の増大分以上に気流をスムースに遠心羽根車内へ
と導くため、全体として著しく送風効率を高めることが
できるものである。
The dotted line indicates the air blowing efficiency, and the solid line indicates the relationship between the outer diameter Da of the axial impeller and the air blowing efficiency. In particular, the outer diameter Da of the suction port is the suction port diameter Dc and Da)
By providing an axial flow impeller with a DC relationship of 0,85 DC, the axial flow impeller guides airflow in a direction parallel to the motor axis at the suction port, and the increased load due to the provision of the axial flow impeller can be reduced. In addition, since the airflow is smoothly guided into the centrifugal impeller, the overall air blowing efficiency can be significantly increased.

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

第1図は従来の送風機を示す断面図、第2図は本発明の
一実施例を示す断面図、第3図は軸流羽根車の外径と送
風効率の関係を示すグラフ図である。 12°゛パ°ファンケース、10°パ°゛遠心羽根車、
13・・・・・・吸込口、14・・・・・・軸流羽根車
。 代理人の氏名 弁理士 中 尾 敏 男 ほか1名第1
FIG. 1 is a sectional view showing a conventional blower, FIG. 2 is a sectional view showing an embodiment of the present invention, and FIG. 3 is a graph showing the relationship between the outer diameter of an axial impeller and the air blowing efficiency. 12° fan case, 10° centrifugal impeller,
13... Suction port, 14... Axial flow impeller. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure

Claims (1)

【特許請求の範囲】[Claims] 遠心羽根車を覆うファンケースの吸込口に軸流羽根車を
同遠心羽根車と同軸に固定し、上記軸流羽根車の外径を
Da、ファンケースの吸込口径をDaとしだときDc)
Da)0.85 Dcの関係に設定した送風機。
An axial impeller is coaxially fixed to the suction port of a fan case that covers the centrifugal impeller, and the outer diameter of the axial impeller is Da, and the suction aperture of the fan case is Da, then Dc)
Da) A blower set to a relationship of 0.85 Dc.
JP12182683A 1983-07-04 1983-07-04 Fan Pending JPS6013996A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12182683A JPS6013996A (en) 1983-07-04 1983-07-04 Fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12182683A JPS6013996A (en) 1983-07-04 1983-07-04 Fan

Publications (1)

Publication Number Publication Date
JPS6013996A true JPS6013996A (en) 1985-01-24

Family

ID=14820883

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12182683A Pending JPS6013996A (en) 1983-07-04 1983-07-04 Fan

Country Status (1)

Country Link
JP (1) JPS6013996A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021235197A1 (en) * 2020-05-19 2021-11-25 パナソニックIpマネジメント株式会社 Electric blower

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021235197A1 (en) * 2020-05-19 2021-11-25 パナソニックIpマネジメント株式会社 Electric blower

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