JPH01167500A - Air blower - Google Patents
Air blowerInfo
- Publication number
- JPH01167500A JPH01167500A JP32353187A JP32353187A JPH01167500A JP H01167500 A JPH01167500 A JP H01167500A JP 32353187 A JP32353187 A JP 32353187A JP 32353187 A JP32353187 A JP 32353187A JP H01167500 A JPH01167500 A JP H01167500A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- discharge port
- covering member
- impeller
- vane wheel
- 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
Links
- 230000000903 blocking effect Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 206010047700 Vomiting Diseases 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008673 vomiting Effects 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は発熱体あるいは熱源ををす°る機器及び素子の
極部冷却をする小型遠心式送風機に関し、その騒音対策
に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a small centrifugal blower for cooling the extreme parts of equipment and elements that use a heat generating body or a heat source, and relates to noise countermeasures thereof.
(従来′の技術)
第2図に示すようにモータ3により羽根を回転させ、吸
入ロアより流入した気体をフレーム1内゛ 面に沿って
導き、吐出口4又は5から気体を吐出し、ていた、吐出
口の選択に関してはフレームl内部に設けたしゃへい部
材11を設け、fl¥2図(a)から見て反時計方向回
転時には吐出口5から、時計方向回転時には吐出口4か
ら気体を吐出しでいた。又、しゃへい部材11は吐出口
4と吐出口5との流路抵抗を上げ、具体的には反時計方
向回転時には吐出口4、時計方向回転時には吐出口5へ
の気体の漏れを極力抑える働きをしていた。従って羽根
車2の外周とじゃへい部材11の間隙は極力小さく抑え
てあった。このようなしゃへい部材11の働きにより、
モータ3の回転方向を選択することで吐出口及び吐出方
向を制御できる構造となっていた。(Prior art' technology) As shown in Fig. 2, the blades are rotated by the motor 3, the gas flowing in from the suction lower is guided along the inner surface of the frame 1, and the gas is discharged from the discharge port 4 or 5. In addition, regarding the selection of the discharge port, a shielding member 11 is provided inside the frame 1, and the gas is discharged from the discharge port 5 when the rotation is counterclockwise as viewed from FIG. 2(a), and from the discharge port 4 when the rotation is clockwise. I was vomiting. In addition, the shielding member 11 increases the flow path resistance between the discharge ports 4 and 5, and specifically serves to minimize gas leakage to the discharge ports 4 during counterclockwise rotation and to the discharge ports 5 during clockwise rotation. was doing. Therefore, the gap between the outer periphery of the impeller 2 and the blocking member 11 is kept as small as possible. Due to the function of such a shielding member 11,
By selecting the rotational direction of the motor 3, the discharge port and the discharge direction can be controlled.
(発明が解決しようとする問題点〕
しかしながら、しゃへい部材11により、吐出口の流路
抵抗を上げるために羽根車2とじゃへい部材11との間
隙を極力小さく抑えることと、部材コーナー12を鋭角
にすることにより、流路中の高速流の?り離と流速の低
下を助ける構造となっていたが、部材コーナー12での
高速流の剥離に ・よ、す、高速回転域において高いレ
ベルの高周波ノ。(Problems to be Solved by the Invention) However, in order to increase the flow path resistance of the discharge port by the shielding member 11, it is necessary to suppress the gap between the impeller 2 and the shielding member 11 as small as possible, and to set the member corner 12 at an acute angle. By doing so, the structure was designed to help the separation of the high-speed flow in the flow path and reduce the flow velocity, but due to the separation of the high-speed flow at the component corner 12. High frequency.
イズが発生するという問題点を育していた。This had led to the problem that noise was occurring.
本発明の目的はこの高周波ノイズを低減することにより
、機器及び素子への極部冷却時における静粛性を確保し
、さらに複数個の使用においても十分に静粛な小型送風
機の提供をも目的としている。The purpose of the present invention is to reduce this high-frequency noise to ensure quietness when cooling the extreme parts of equipment and elements, and also to provide a small-sized blower that is sufficiently quiet even when used in multiple units. .
本発明の送風機は主として遠心式送風機において、吐出
口が第1の吐出口とm2の吐出口にじゃへい部材により
分離されると共に前記しゃへい部材においてじゃへい部
材と羽根車との間隙以上の半径による円弧を羽根車に面
°するコーナーに設けることを特徴とする。The blower of the present invention is mainly a centrifugal blower in which a discharge port is separated into a first discharge port and a m2 discharge port by a blocking member, and the radius of the blocking member is larger than the gap between the blocking member and the impeller. It is characterized by providing an arc at the corner facing the impeller.
(実施例〕
第1図に示すようにモータ3により羽根車2を回転さ、
せ、嫉へロアより気体を流入する。流入した気体をフレ
ーム1内面に沿って導き、吐出口4又は5から高速に加
速された気体を外部に吐出している。フレーム1の内部
にしゃへい部材“6を設け、羽根車2が反時計方向回転
時には吐出口5から、時計方向回転時には吐出口4より
気体を吐出するようになっている。しゃへい部材6は吐
出口4と5との流路抵抗を上げ、反時計方向回転時には
吐出口4へ、時計方向回転時には吐出口6への気体の漏
れを極力抑える働きをしている。従って羽根車2としゃ
へい部材Bとの間隙は極力小さ(しである。(Example) As shown in FIG. 1, the impeller 2 is rotated by the motor 3,
Gas flows in from the loa to Jealousy. The inflowing gas is guided along the inner surface of the frame 1, and the gas accelerated at high speed is discharged to the outside from the discharge port 4 or 5. A shielding member "6" is provided inside the frame 1, and gas is discharged from the discharge port 5 when the impeller 2 rotates counterclockwise and from the discharge port 4 when the impeller 2 rotates clockwise. 4 and 5, and suppresses as much as possible the leakage of gas to the discharge port 4 during counterclockwise rotation and to the discharge port 6 during clockwise rotation.Therefore, the impeller 2 and the shielding member B The gap between the two is as small as possible.
本発明はしやへい部材6が羽根車2に面するコーナーに
曲面部8を設けることで、従来品においてこの部分で気
体の剥離の際に生じる高周波ノイズを低減させる構造と
している。The present invention has a structure in which the curved surface portion 8 is provided at the corner of the shielding member 6 facing the impeller 2, thereby reducing high frequency noise generated when gas is separated at this portion in conventional products.
曲面部8は、本実施例にお−いては断面は円弧をなす、
この円弧の半径は羽根車20回転数、しゃへい部材6と
羽根車2との間隙、吐出口4.5の面積等いういろな要
因により決定することができるが、円弧の半径を大きく
取りすぎると吐出流路の抵抗が増加すると共に、他方の
吐出口への流路抵抗が減少するため、他方の吐出口への
漏れが増加する。このため高周波ノイズは低下するが吐
出気0体量が減少するという問題が発生する。In this embodiment, the curved surface portion 8 has an arcuate cross section.
The radius of this arc can be determined based on various factors such as the number of revolutions of the impeller 20, the gap between the shielding member 6 and the impeller 2, and the area of the discharge port 4.5, but if the radius of the arc is too large, Since the resistance of the discharge flow path increases and the flow path resistance to the other discharge port decreases, leakage to the other discharge port increases. Therefore, although the high frequency noise is reduced, a problem arises in that the amount of discharged air is reduced.
本発明においては、吐出口4.5の間隔にもよるが羽根
車20回転数が1000〜1200Orpm以上では、
曲面部8の円弧の半径をしゃへい部材6と羽根車2との
間隙の1〜3倍程度の円弧半径を選択することにより、
吐出気体量をほとんど低下させず高周波ノイズを聴感的
に良好なレベルまで減少させることに成功している0曲
面部8の形状は、円弧の他に、しゃへい部材8の壁面θ
a18bどうしをなめらかな曲面でつなげる形状であれ
ば円弧でなくても同等の効果を得る事ができる。In the present invention, although it depends on the interval between the discharge ports 4.5, when the impeller 20 rotation speed is 1000 to 1200 Orpm or more,
By selecting the radius of the arc of the curved surface portion 8 to be about 1 to 3 times the gap between the shielding member 6 and the impeller 2,
The shape of the zero-curved surface portion 8, which has succeeded in reducing high-frequency noise to an audibly good level without substantially reducing the amount of discharged gas, is the shape of the wall surface θ of the shielding member 8, in addition to the circular arc.
If the shape connects the a18b with a smooth curved surface, the same effect can be obtained even if it is not a circular arc.
(発明の効果)
本発明の小型遠心式送風機により、’0AII器等の発
熱部及び素子等の極部冷却における騒音の低下が図れる
と共に、この騒音低下により複数個の送l1機によも複
数の局部冷却の実現も可能とした。(Effects of the Invention) The small centrifugal blower of the present invention can reduce noise when cooling the extreme parts of the heat generating parts and elements of '0AII equipment, etc. This also made it possible to achieve localized cooling.
、第1図は本発明の遠心式送風機であり、(&)は気体
吸入口側より児たA−A’断面図、(b)は気体吐出口
側より見た正面図。
第2図は従来の遠心式送風機であり、(a)は気体吸入
口側より見たn−n’断面図、(b)は気体吐出口側よ
り見た正面図。
1・・・フレーム
2・・・羽根車
3・・・モータ
4・5・・・吐出口
6・・・しやへい部材
7・・・吸入口
8・・・円弧
11・・・シゃへい部材
12・・・しゃへい部材コーナー
以 上
ヘ(7, FIG. 1 shows a centrifugal blower of the present invention, (&) is a sectional view taken along line AA' from the gas inlet side, and (b) is a front view taken from the gas outlet side. FIG. 2 shows a conventional centrifugal blower, in which (a) is a sectional view taken along the line nn' as seen from the gas inlet side, and (b) is a front view seen from the gas outlet side. 1... Frame 2... Impeller 3... Motor 4, 5... Discharge port 6... Shield member 7... Suction port 8... Arc 11... Shield Member 12...More than the shielding member corner (7
Claims (1)
体を誘導するフレームとから成る遠心式送風機において
、その吐出口が第1の吐出口と第2の吐出口とにしゃへ
い部材により分離されると共に、前記しゃへい部材にお
いてしゃへい部材と羽根車との間隙以上の半径による円
弧を羽根車に面するコーナーに設けることを特徴とする
送風機。In a centrifugal blower consisting of an impeller having a plurality of radially arranged blades and a frame for guiding gas, the discharge port is separated into a first discharge port and a second discharge port by a shielding member. and an arc having a radius larger than the gap between the shielding member and the impeller is provided at a corner facing the impeller in the shielding member.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32353187A JPH01167500A (en) | 1987-12-21 | 1987-12-21 | Air blower |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32353187A JPH01167500A (en) | 1987-12-21 | 1987-12-21 | Air blower |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01167500A true JPH01167500A (en) | 1989-07-03 |
Family
ID=18155737
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP32353187A Pending JPH01167500A (en) | 1987-12-21 | 1987-12-21 | Air blower |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01167500A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008088985A (en) * | 2007-11-26 | 2008-04-17 | Sharp Corp | Blower device and heating cooker equipped with the same |
JP2016056780A (en) * | 2014-09-12 | 2016-04-21 | パナソニックIpマネジメント株式会社 | Pump device |
JP2019508105A (en) * | 2016-01-29 | 2019-03-28 | 青島海爾洗衣机有限公司QingDao Haier Washing Machine Co.,Ltd. | Clothes dryer |
JP2019058055A (en) * | 2017-07-28 | 2019-04-11 | ヒタチ レール イタリー ソチエタ ペル アツィオニ | Electric motor assembly for railway drive |
-
1987
- 1987-12-21 JP JP32353187A patent/JPH01167500A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008088985A (en) * | 2007-11-26 | 2008-04-17 | Sharp Corp | Blower device and heating cooker equipped with the same |
JP2016056780A (en) * | 2014-09-12 | 2016-04-21 | パナソニックIpマネジメント株式会社 | Pump device |
JP2019508105A (en) * | 2016-01-29 | 2019-03-28 | 青島海爾洗衣机有限公司QingDao Haier Washing Machine Co.,Ltd. | Clothes dryer |
JP2019058055A (en) * | 2017-07-28 | 2019-04-11 | ヒタチ レール イタリー ソチエタ ペル アツィオニ | Electric motor assembly for railway drive |
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