JPS5844297A - Blower - Google Patents
BlowerInfo
- Publication number
- JPS5844297A JPS5844297A JP56142692A JP14269281A JPS5844297A JP S5844297 A JPS5844297 A JP S5844297A JP 56142692 A JP56142692 A JP 56142692A JP 14269281 A JP14269281 A JP 14269281A JP S5844297 A JPS5844297 A JP S5844297A
- Authority
- JP
- Japan
- Prior art keywords
- hub
- impeller
- air
- flow
- holes
- 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
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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
- F04D29/329—Details of the hub
-
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
- F04D29/684—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps by fluid injection
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、空気調和機等に使用される送風装置に関する
もので、特に羽根車より発生する騒音を抑制することを
目的とするものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a blower device used in an air conditioner or the like, and is particularly aimed at suppressing noise generated from an impeller.
従来、羽根車を使用した送風装置は第6図〜第9図に示
す如く、円筒状のノ・プ101の外周に複数枚の羽根1
02を配設して羽根車10Bを構成し前記ハブ101の
内部に電動機103の回転軸104と数台するボス10
6を配設し、前記ボス106に前記回転軸104を固着
するネジ106を設け、前記ハブ101の前記ネジ10
6に対向する位置に前記ネジ106をしめる為の小径の
穴107を一個設け、さらにエアガイダ109を配設し
て構成されていた。Conventionally, a blower device using an impeller has a plurality of blades 1 around the outer periphery of a cylindrical nozzle 101, as shown in FIGS. 6 to 9.
02 to constitute an impeller 10B, and a rotating shaft 104 of an electric motor 103 and several bosses 10 are disposed inside the hub 101.
6, and a screw 106 for fixing the rotary shaft 104 to the boss 106 is provided, and the screw 106 of the hub 101
One small diameter hole 107 for tightening the screw 106 is provided at a position opposite to the screw 106, and an air guider 109 is further provided.
このような構成において、羽根車108の前面側Aと後
面1IIIBとの大気圧力差が所定の値を越えると騒音
が急激に増大することが広く知られている。In such a configuration, it is widely known that when the atmospheric pressure difference between the front side A and the rear side 1IIIB of the impeller 108 exceeds a predetermined value, noise increases rapidly.
すなわち羽根車前面側Aと後面側Bとの大気圧力の差(
以下静圧と記す)が所定値以下においては、風の流れは
第7図矢印Xに示す方向であるが、静圧が所定値を越え
ると、第8図矢印Yのように送風羽根108の風上側か
ら流入してきた空気は前記ハブ101の円周部分より剥
離を起こし、前記電動機103の回転軸104とほぼ直
角な方向に流れ、また、この流れに誘因されて、前記羽
根屯108の風下側からも第8図矢印2に示すように空
気が流れ、これにより騒音が増大すると考えられている
。In other words, the difference in atmospheric pressure between the front side A and the rear side B of the impeller (
When the static pressure (hereinafter referred to as static pressure) is below a predetermined value, the air flows in the direction shown by the arrow X in FIG. Air flowing in from the windward side causes separation from the circumferential portion of the hub 101 and flows in a direction approximately perpendicular to the rotating shaft 104 of the electric motor 103. Also, induced by this flow, air flows to the leeward side of the blade tun 108. Air also flows from the sides as shown by arrow 2 in Figure 8, which is thought to increase noise.
本発明は、かかる点に鑑みてなされ、上記従来の問題を
解消しようとするものである。The present invention has been made in view of this point and aims to solve the above-mentioned conventional problems.
以下、本発明の一実施例について第1図〜第3図により
説明する。An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.
図に財いて、1は羽根車、2は前面2aを閉じた円筒形
のハブである。3は前記ハブ2の、風下側かつ、前記プ
ロペラ型羽根車1の軸と並行な面すなわち、ハブ2の円
筒面2bに外部から内部に貫通するように全周にわたっ
てほぼ均等に配設された複数個の透孔で、この透孔3に
よって羽根車1の前面側と後面側と隙間に空気路4が形
成されている。5は前記ハ、プ2の周囲に放射状に配設
された複数枚の羽根、6は前記ノ\プ2の内部に具備さ
れたボス、7は前記透孔3間を仕切る仕切壁を兼ねた仕
切羽根である。In the figure, 1 is an impeller, and 2 is a cylindrical hub with a closed front surface 2a. Numerals 3 are arranged almost uniformly over the entire circumference of the hub 2 on the leeward side and parallel to the axis of the propeller-type impeller 1, that is, on the cylindrical surface 2b of the hub 2 so as to penetrate from the outside to the inside. A plurality of through holes 3 form an air passage 4 between the front side and the rear side of the impeller 1. 5 is a plurality of blades arranged radially around the hole 2, 6 is a boss provided inside the hole 2, and 7 also serves as a partition wall that partitions the through hole 3. It is a partition blade.
そしてこの仕切羽根7は、前記羽根車1を回転させた時
に前記羽根6によって流される空気の方向と逆方向に空
気路4を空気が流れるように求心ファンを構iしている
。The partition blades 7 constitute a centripetal fan so that air flows through the air passage 4 in the opposite direction to the direction of air flowed by the blades 6 when the impeller 1 is rotated.
上記構成において、羽根車1の外周にエアガイダ8を配
置し、電動機9にて前記羽根車1を回転させると、羽根
車1の後面側Bより前面側Aに向かって第8図矢印2で
示す如〈従来例の場合と同様に空気が流れる。さらに、
前記ハブ2に設けられた仕切羽根7により、前記ハブ2
近くの空気は前記・・プ2の内部に第8図矢印2で示す
如く透孔3を通りすい込まれる。この為静圧が零の場合
の風量は、前記従来の羽根車型送風装置の静圧ア零の場
合の風量より若干減少するが静圧が増加した場合の風量
静圧関係は大きく変化せず、実用上は問題にならない。In the above configuration, an air guider 8 is arranged around the outer periphery of the impeller 1, and when the impeller 1 is rotated by the electric motor 9, the impeller 1 is moved from the rear side B to the front side A as shown by arrow 2 in FIG. As in the case of the conventional example, air flows. moreover,
The partition blade 7 provided on the hub 2 allows the hub 2 to
Nearby air is forced into the interior of the pipe 2 through the through hole 3 as shown by the arrow 2 in FIG. Therefore, the air volume when the static pressure is zero is slightly smaller than the air volume when the static pressure is zero in the conventional impeller type blower, but the air volume and static pressure relationship does not change significantly when the static pressure increases. There is no problem in practice.
静圧が増加すると空気の流れFは放射状に外側へ流れよ
うとするが、一方で前記静圧差により前記透孔3及び前
記仕切羽根7によって、前記・・プ2内にすいこま′れ
る空気の流れGが増加し、上記外側への流れと矢印G方
向の流れがバランスし合って、軸に対し直角方向の流れ
は生じず矢印F方向の正常な流れが維持される。このた
め騒音レベルも第4図のようvCなだらかな特性になり
、従来のプロペラファンの特性11にみられたような急
激な上昇はなくなり、種々の負荷あるいは変動する負荷
によって急激に騒音が上昇することもなく静かな送風を
行なうことが可能になる。When the static pressure increases, the air flow F tends to flow radially outward, but on the other hand, due to the static pressure difference, the air flow is sucked into the through hole 3 and the partition blade 7 into the pipe 2. G increases, and the outward flow and the flow in the direction of the arrow G are balanced, and no flow in the direction perpendicular to the axis occurs, and a normal flow in the direction of the arrow F is maintained. For this reason, the noise level also has a smooth vC characteristic as shown in Figure 4, and there is no sudden rise as seen in characteristic 11 of conventional propeller fans, and the noise rises suddenly due to various or fluctuating loads. This makes it possible to blow air quietly without any problems.
以上、実施例により説明したように、本発明の送風装置
は羽根を支える円筒形I\ブの円筒面の送風方向風下側
に全周にわたってほぼ均等に7凡プ内部に貫通する複数
の透孔を形□成し、羽根車前面側と羽根車後面側とを連
通ずる空気路を設け、前記透孔間の仕切壁を仕切羽根と
して求心ファンを形成したもので、これによって羽根車
の製造コストを大幅にあげることなく、羽根車の軸方向
に対し直角方向の空気の流れの発生を防正し、それに伴
ない発生する騒音レベルの急激な上昇をなくし、種々の
負荷あるいは変動する負荷に対して静かな通風を可能に
したものである。As described above with reference to the embodiments, the blower device of the present invention has a plurality of through holes that penetrate into the inside of the cylindrical surface of the cylindrical I\b that supports the blades, approximately evenly distributed over the entire circumference on the leeward side of the cylindrical surface of the cylindrical surface in the blowing direction. A centripetal fan is formed by forming an air passage that communicates the front side of the impeller with the rear side of the impeller, and using the partition wall between the through holes as partition blades.This reduces the manufacturing cost of the impeller. It prevents the occurrence of air flow in the direction perpendicular to the impeller axis without significantly increasing the noise level, eliminates the sudden increase in the noise level that occurs, and makes it possible to handle various or fluctuating loads. This allows for quiet ventilation.
第1図は本発明の一実施例における羽根車の断面図、第
2図は第1図の14線断面図、第3図は本発明の一実施
例である送風装置の側面図、第4図は同送風装置の騒音
と風量との関係を示す特性図、第6図は従来の送風用羽
根車の正面図、第6図は第6図のW−w線断面図、第7
図及び第8図は同送風羽根車を用いた送風装置の側面図
である。
1・・・・・・羽根L 2・・・・・・ノ1ブ、3・−
・・・・透JL。
4・・・・・・空気路、6・・・・・・羽根、7・・・
・・・仕切羽根。
代理人の氏名 弁理士 中 尾 敏 男 ほか1名第2
図
13 図
第4図
虱 lFIG. 1 is a sectional view of an impeller according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line 14 in FIG. The figure is a characteristic diagram showing the relationship between noise and air volume of the blower, Figure 6 is a front view of a conventional blower impeller, Figure 6 is a cross-sectional view taken along line W-W in Figure 6, and Figure 7
8 and 8 are side views of a blower device using the same blower impeller. 1...Blade L 2...Knob 1, 3--
...Toru JL. 4... Air path, 6... Vane, 7...
...Partition blade. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure 13 Figure 4 Lice l
Claims (1)
羽根を備えた羽根車と、この羽根車を回転駆動するモー
タと前記羽根車の外周に設けたエアガイダとからなり、
前記ハブの送風方向風下fullの円筒面に全周にわた
ってほぼ均等な間かくでハブ内部に貫通する複数の透孔
を形成し、羽根車前面側と羽根車後面側とを連通ずる空
気路を設け、前記透孔間の仕切壁によって羽根車の送風
方向と逆方向の空気の流れを生じる求心ファンを形成し
た送風装置。It consists of an impeller with a plurality of blades radially surrounding a cylindrical hub with a closed front, a motor that rotationally drives this impeller, and an air guider provided on the outer periphery of the impeller,
A plurality of through holes penetrating into the hub are formed at substantially equal intervals over the entire circumference on the full cylindrical surface of the hub in the wind blowing direction, and an air passage is provided that communicates the front side of the impeller with the rear side of the impeller. . An air blowing device in which a centripetal fan is formed in which a partition wall between the through holes causes air to flow in a direction opposite to the blowing direction of the impeller.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56142692A JPS5844297A (en) | 1981-09-09 | 1981-09-09 | Blower |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56142692A JPS5844297A (en) | 1981-09-09 | 1981-09-09 | Blower |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5844297A true JPS5844297A (en) | 1983-03-15 |
Family
ID=15321305
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56142692A Pending JPS5844297A (en) | 1981-09-09 | 1981-09-09 | Blower |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5844297A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007177722A (en) * | 2005-12-28 | 2007-07-12 | Hitachi Ltd | Cooling fan device |
EP2085618A2 (en) * | 2008-01-30 | 2009-08-05 | LG Electronics Inc. | Outdoor unit of air-conditioner and fan used therefor |
CN111379739A (en) * | 2020-03-18 | 2020-07-07 | 奇鋐科技股份有限公司 | Fan rotor jet structure |
US11346370B2 (en) | 2020-04-07 | 2022-05-31 | Asia Vital Components Co., Ltd. | Jet structure of fan rotor |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2538196A (en) * | 1947-11-22 | 1951-01-16 | Hildebrand | Electric fan |
JPS545203A (en) * | 1977-06-10 | 1979-01-16 | Wallace Murray Corp | Fan construction |
JPS56142707A (en) * | 1980-02-19 | 1981-11-07 | Baanzu Burazaasu | Tire chain |
-
1981
- 1981-09-09 JP JP56142692A patent/JPS5844297A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2538196A (en) * | 1947-11-22 | 1951-01-16 | Hildebrand | Electric fan |
JPS545203A (en) * | 1977-06-10 | 1979-01-16 | Wallace Murray Corp | Fan construction |
JPS56142707A (en) * | 1980-02-19 | 1981-11-07 | Baanzu Burazaasu | Tire chain |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007177722A (en) * | 2005-12-28 | 2007-07-12 | Hitachi Ltd | Cooling fan device |
EP2085618A2 (en) * | 2008-01-30 | 2009-08-05 | LG Electronics Inc. | Outdoor unit of air-conditioner and fan used therefor |
EP2085618A3 (en) * | 2008-01-30 | 2011-10-12 | LG Electronics, Inc. | Outdoor unit of air-conditioner and fan used therefor |
US8191381B2 (en) | 2008-01-30 | 2012-06-05 | Lg Electronics Inc. | Outdoor unit of air-conditioner and fan used therefor |
CN111379739A (en) * | 2020-03-18 | 2020-07-07 | 奇鋐科技股份有限公司 | Fan rotor jet structure |
CN111379739B (en) * | 2020-03-18 | 2022-07-29 | 奇鋐科技股份有限公司 | Fan rotor jet structure |
US11346370B2 (en) | 2020-04-07 | 2022-05-31 | Asia Vital Components Co., Ltd. | Jet structure of fan rotor |
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