JPS6115474Y2 - - Google Patents
Info
- Publication number
- JPS6115474Y2 JPS6115474Y2 JP16664380U JP16664380U JPS6115474Y2 JP S6115474 Y2 JPS6115474 Y2 JP S6115474Y2 JP 16664380 U JP16664380 U JP 16664380U JP 16664380 U JP16664380 U JP 16664380U JP S6115474 Y2 JPS6115474 Y2 JP S6115474Y2
- Authority
- JP
- Japan
- Prior art keywords
- fan
- outer frame
- top surface
- motor
- casing
- 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
Links
- 230000000630 rising effect Effects 0.000 claims description 9
- 238000009423 ventilation Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 description 9
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【考案の詳細な説明】
本考案は遠心力フアンの吸込側と反対側に遠心
力フアンとほぼ同径の筒形の立上り部を外枠に設
け、この立上り部でモータを囲むことにより、風
量、静圧共に高め、さらに低騒音化を図ることを
目的とする。[Detailed description of the invention] This invention provides a cylindrical rising part with approximately the same diameter as the centrifugal fan on the outer frame on the side opposite to the suction side of the centrifugal force fan, and by surrounding the motor with this rising part, the air volume is increased. The aim is to increase both static pressure and further reduce noise.
従来の換気扇は第１図に示すように、遠心力フ
アン１０１を底面１０２と外枠天面１０３との隙
間Ａが小さい場合は、ケーシング１０４の高さａ
が高くできず、ケーシング１０４内の風の流れる
体積が大きくできないため、大風量を得るのはむ
ずかしかつた。また第２図のように、遠心力フア
ン２０１の底面２０２と外枠天面２０３との隙間
Ｂが大きい場合は、ケーシング２０４の高さｂが
高くでき大風量が得られるが、遠心力フアン２０
１の底面２０２と外枠天面２０３との隙間Ｂにお
いて風の流れが乱流となり、脈動音がしたり、静
圧が高くとれない原因となつていた。これらのの
静圧一風量特性を示すとそれぞれ第４図の，
の曲線となる。 As shown in FIG. 1, in the conventional ventilation fan, when the gap A between the bottom surface 102 and the outer frame top surface 103 is small, the centrifugal force fan 101 is
It has been difficult to obtain a large air volume because the volume of air flowing inside the casing 104 cannot be increased. Further, as shown in FIG. 2, when the gap B between the bottom surface 202 of the centrifugal force fan 201 and the outer frame top surface 203 is large, the height b of the casing 204 can be increased and a large air volume can be obtained.
The wind flow becomes turbulent in the gap B between the bottom surface 202 of the housing 1 and the top surface 203 of the outer frame, causing pulsating noise and an inability to maintain high static pressure. The static pressure-airflow characteristics of these are shown in Figure 4, respectively.
The curve becomes
本考案は上記従来の欠点を解消するもので、以
下にその実施例を第３図に基づいて説明する。 The present invention solves the above-mentioned conventional drawbacks, and an embodiment thereof will be described below with reference to FIG.
図において、４は外枠であり、その天面５には
モータ１を取りつけている。このモータの回転軸
には遠心力フアン２を固着しており、この遠心力
フアン２は外枠４内においてケーシング３で包囲
され、その底面７は外枠４の天面５に対し大きな
間隔をもつように配置れており、したがつてケー
シング３は大きな高さをもち、風の流れる大きな
容積を有している。前記外枠４の天面５には遠心
力フアン２とほぼ同径の筒形の立上り部６を内方
に突設してある。この立上り部６はモータ１を囲
むとともに遠心力フアン２の底面７と若干の隙間
を有している。 In the figure, 4 is an outer frame, and the motor 1 is attached to the top surface 5 of the outer frame. A centrifugal force fan 2 is fixed to the rotating shaft of this motor, and this centrifugal force fan 2 is surrounded by a casing 3 within an outer frame 4, and its bottom surface 7 is separated from the top surface 5 of the outer frame 4 by a large distance. The casing 3 therefore has a large height and a large volume through which the air flows. A cylindrical rising portion 6 having approximately the same diameter as the centrifugal force fan 2 is provided on the top surface 5 of the outer frame 4 to project inward. This rising portion 6 surrounds the motor 1 and has a slight gap from the bottom surface 7 of the centrifugal fan 2.
上記構成において、外枠天面５と遠心力フアン
底面７との空間に筒形の立上り部６を設けること
により、この筒形の立上り部６周囲とケーシング
３側面との間を風が整流かれて流れるため、ケー
シング３の高さを高くしても、従来よりも、高静
圧が得られ、脈動音をなく、さらに大風量が得ら
れ、静圧−風量特性で示すと第４図のの曲線の
ようになる。本考案は従来のの曲線（従来例第
１図）のようにケーシングの高さが低いものより
も、風の流れる体積が大きくなるため、風量が多
くなり、の曲線（従来例第２図）のようにケー
シングの高くできても、外枠天面と遠心力フアン
底面との空間に風の乱流が生じるため静圧が高く
得られないものよりも、筒形の立上り部により風
の乱流がなくなり、低騒音で高静圧が得られるよ
うになつた。しかも、モータが前記立上り部で囲
まれ、この構成からもモータの逆転音を小さくす
ることができる。 In the above configuration, by providing the cylindrical rising portion 6 in the space between the outer frame top surface 5 and the centrifugal fan bottom surface 7, the wind is rectified between the periphery of the cylindrical rising portion 6 and the side surface of the casing 3. Therefore, even if the height of the casing 3 is increased, a higher static pressure can be obtained than before, there is no pulsation noise, and a large air volume can be obtained. It looks like a curve. In this invention, the volume through which the air flows is larger than that of the conventional curve (Fig. 1 of the conventional example) where the height of the casing is low, so the air volume increases. Even if the casing can be made high like this, the turbulent flow of wind occurs in the space between the top surface of the outer frame and the bottom surface of the centrifugal fan, so high static pressure cannot be obtained. There is no flow, and high static pressure can be obtained with low noise. Moreover, the motor is surrounded by the rising portion, and this configuration also makes it possible to reduce the noise of the motor in reverse rotation.
このように本考案によれば従来のように大風量
型が高静圧型の２種類が必要であつたものが、１
種類で大風量、高静圧の特性を満足でき、さらに
低騒音化が図れるという効果が発揮されるもので
ある。 In this way, according to the present invention, instead of the conventional method requiring two types, a large air volume type and a high static pressure type, there is only one type.
This type can satisfy the characteristics of large air volume and high static pressure, and also has the effect of reducing noise.
第１図、第２図は従来例の断面図、第３図は本
考案の一実施例における換気扇の断面図、第４図
は静圧−風量特性図である。
１……モータ、２……遠心力フアン、３……ケ
ーシング、４……外枠、５……天面、６……立上
り部、７……底面。
1 and 2 are sectional views of a conventional example, FIG. 3 is a sectional view of a ventilation fan according to an embodiment of the present invention, and FIG. 4 is a static pressure-air volume characteristic diagram. 1... Motor, 2... Centrifugal fan, 3... Casing, 4... Outer frame, 5... Top surface, 6... Rising part, 7... Bottom surface.
Claims (1)
つて駆動される遠心力フアンを、その吸込側と反
対側の底面が前記外枠の天面に対し大きな間隔を
もつように配設し、前記外枠の天面に、前記遠心
力フアン径とほぼ同径の筒形の立上り部でモータ
を囲むとともに先端が遠心力フアンの底面に対し
若干のすき間があくように突設し、前記外枠内に
おいて遠心力フアンを囲むケーシングを設けてな
るダクト用換気扇。 A motor is attached to the top surface of the outer frame, and a centrifugal force fan driven by the motor is arranged such that the bottom surface of the fan on the opposite side to the suction side has a large distance from the top surface of the outer frame, A cylindrical rising part having approximately the same diameter as the centrifugal fan diameter is provided on the top surface of the outer frame to surround the motor and protrude so that its tip leaves a slight gap to the bottom surface of the centrifugal fan. A duct ventilation fan that includes a casing that surrounds a centrifugal fan within a frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16664380U JPS6115474Y2 (en) | 1980-11-19 | 1980-11-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16664380U JPS6115474Y2 (en) | 1980-11-19 | 1980-11-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5789141U JPS5789141U (en) | 1982-06-01 |
| JPS6115474Y2 true JPS6115474Y2 (en) | 1986-05-14 |
Family
ID=29525285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16664380U Expired JPS6115474Y2 (en) | 1980-11-19 | 1980-11-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6115474Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5503116B2 (en) * | 2008-05-28 | 2014-05-28 | 株式会社クボタ | Combine dust remover |
-
1980
- 1980-11-19 JP JP16664380U patent/JPS6115474Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5789141U (en) | 1982-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6568905B2 (en) | Fan wheel structure for a blower fan | |
| JPS6115474Y2 (en) | ||
| JPS6214517Y2 (en) | ||
| JPS6320919Y2 (en) | ||
| JPS6330909Y2 (en) | ||
| JPH0270137U (en) | ||
| JPS5810894Y2 (en) | ventilation fan | |
| JPS6032845Y2 (en) | Outdoor unit of separate air conditioner | |
| JPS6212193Y2 (en) | ||
| JPS62171687U (en) | ||
| JP2758365B2 (en) | Electric blower | |
| JPS6228720Y2 (en) | ||
| JPS58169199U (en) | Blower | |
| JPS6336697U (en) | ||
| JPS63110771U (en) | ||
| JPS602198U (en) | cooling tower | |
| JPH0178286U (en) | ||
| JPS6140495A (en) | Electric blower | |
| JPS6012119U (en) | ventilation fan | |
| JPS6295223U (en) | ||
| JPS61118998U (en) | ||
| JPS60192646U (en) | Small open type induction motor | |
| JPH01124094U (en) | ||
| JPS6236300U (en) | ||
| JPS61202699U (en) |