JP2884562B1 - Centrifugal blower impeller - Google Patents
Centrifugal blower impellerInfo
- Publication number
- JP2884562B1 JP2884562B1 JP12182098A JP12182098A JP2884562B1 JP 2884562 B1 JP2884562 B1 JP 2884562B1 JP 12182098 A JP12182098 A JP 12182098A JP 12182098 A JP12182098 A JP 12182098A JP 2884562 B1 JP2884562 B1 JP 2884562B1
- Authority
- JP
- Japan
- Prior art keywords
- ridges
- impeller
- centrifugal blower
- main plate
- plate
- 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
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
【要約】
【課題】 送風機効率が向上する遠心式送風機の羽根車
を得る。
【解決手段】 主板４と側板５との間に複数の翼６，６
…を周方向所定ピッチで設けて構成する。各翼６の回転
方向側の面に、回転軸に対して略平行状の複数の凸条７
を形成する。凸条７の幅と高さを、側板５側から主板４
側に向かって増加させる。An impeller for a centrifugal blower with improved blower efficiency is provided. A plurality of wings (6, 6) are provided between a main plate (4) and a side plate (5).
Are provided at a predetermined pitch in the circumferential direction. A plurality of ridges 7 substantially parallel to the rotation axis are provided on the surface of each wing 6 on the rotation direction side.
To form The width and height of the ridges 7 are changed from the side plate 5 side to the main plate 4.
Increase towards the side.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ターボ送風機やリ
ミットロード送風機などの遠心式送風機に好適な羽根車
に関する。The present invention relates to an impeller suitable for a centrifugal blower such as a turbo blower or a limit load blower.
【０００２】[0002]
【従来の技術と発明が解決しようとする課題】従来、遠
心式送風機の羽根車の翼は平坦面であった。そのため、
羽根車を回転させると空気が翼面でスリップしやすい問
題があった。また、羽根車は高回転・高静圧での使用に
耐えるために翼を厚くしていた。そのため、重量が大と
なり、送風機効率が悪くなるという問題があった。そこ
で、本発明は上記の問題点を解決する遠心式送風機の羽
根車を提供することを目的とする。2. Description of the Related Art Conventionally, the blades of an impeller of a centrifugal blower have been flat. for that reason,
When the impeller was rotated, there was a problem that air easily slipped on the wing surface. Also, the impeller had thicker blades to withstand use at high rotation and high static pressure. Therefore, there is a problem that the weight becomes large and the efficiency of the blower is deteriorated. Therefore, an object of the present invention is to provide an impeller of a centrifugal blower that solves the above-mentioned problems.
【０００３】[0003]
【課題を解決するための手段】上記目的を達成するため
に、本発明は、主板と側板との間に複数の翼を周方向所
定ピッチで設けて構成し、各翼の回転方向側の面に、回
転軸に対して略平行状の複数の凸条を形成し、この凸条
の幅と高さを、上記側板側から上記主板側に向かって増
加させたものである。さらに、材質をＦＲＰとした。In order to achieve the above-mentioned object, the present invention comprises a plurality of blades provided at a predetermined pitch in a circumferential direction between a main plate and a side plate. In addition, a plurality of ridges substantially parallel to the rotation axis are formed, and the width and height of the ridges are increased from the side plate side toward the main plate side. Further, the material was FRP.
【０００４】[0004]
【発明の実施の形態】図１は本発明の羽根車１を用いた
遠心式送風機を示す断面図である。羽根車１はモーター
２にて回転し、ベルマウス３を介して吸込んだ空気を羽
根車１にて増速・昇圧して外径全周に吐出す。羽根車１
の材質はＦＲＰ（FIBER REINFORCED PLASTICS）とし、
軽量化による軸動力当たりの回転数の増加を図るのが最
適であるが、これ以外の軽量かつ強度大の素材を用いて
も良い。FIG. 1 is a sectional view showing a centrifugal blower using an impeller 1 of the present invention. The impeller 1 is rotated by the motor 2, and the air sucked in through the bell mouth 3 is accelerated and pressurized by the impeller 1 and discharged to the entire outer diameter. Impeller 1
Is made of FRP (FIBER REINFORCED PLASTICS)
It is optimal to increase the number of rotations per shaft power by reducing the weight, but other lightweight and high-strength materials may be used.
【０００５】図２と図３のように、羽根車１は、モータ
ー２の回転軸に取付けられる円盤状主板４と、空気吸込
口を成すリング状側板５と、の間に複数の翼６，６…を
周方向所定ピッチで設けて、構成する。翼６は後向き羽
根とし、各翼６の回転方向側の面（加圧面）に、複数の
小さな凸条７，７…を形成する。凸条７は回転軸に対し
て略平行状とし、適宜の相互間隔をあけて配置すると共
に、翼６の全長にわたって形成し、強度・剛性の向上と
均等化を図る。凸条７の幅と高さは、側板５側から主板
４側に向かって所定の割合にて増加させる。As shown in FIGS. 2 and 3, the impeller 1 has a plurality of blades 6 between a disk-shaped main plate 4 attached to a rotating shaft of a motor 2 and a ring-shaped side plate 5 forming an air suction port. 6 are provided at a predetermined pitch in the circumferential direction. The wing 6 is a rearward-facing blade, and a plurality of small ridges 7, 7,... The ridges 7 are substantially parallel to the rotation axis, are arranged at appropriate intervals, and are formed over the entire length of the wing 6 to improve and equalize the strength and rigidity. The width and height of the ridge 7 are increased at a predetermined ratio from the side plate 5 side to the main plate 4 side.
【０００６】この凸条７があることによって、翼６の加
圧面上での空気のすべり（スリップ）が抑制され、羽根
車１から空気に付与される圧力・流速が増加し、境界層
の乱流遷移が早まり、圧力損失と翼６に加わる形状抗力
（圧力抗力）が減少する。また、羽根車１の回転時にお
いて側板５側よりも主板４側の空気流量が多くなるが、
凸条７の幅と高さが側板５側よりも主板４側が大きいの
で、空気流量に応じて空気すべり抑制効果を主板４側で
高めることができ、送風機効率が一層向上する。The presence of the ridges 7 suppresses the slippage of air on the pressurized surface of the blade 6, increases the pressure and flow velocity applied to the air from the impeller 1, and increases the turbulence of the boundary layer. The flow transition is accelerated, and the pressure loss and the shape drag (pressure drag) applied to the wing 6 decrease. Further, when the impeller 1 rotates, the air flow rate on the main plate 4 side becomes larger than that on the side plate 5 side,
Since the width and height of the ridges 7 are larger on the main plate 4 side than on the side plate 5 side, the air slip suppression effect can be increased on the main plate 4 side according to the air flow rate, and the blower efficiency is further improved.
【０００７】なお、凸条７は、図例のように翼６の回転
方向側の面の全面にほぼ均等に散在させる以外に、一部
に偏在（図示せず）させてもよく、また、凸条７の数の
増減は自由である。さらに、凸条７の断面形状は弧状以
外の断面形状でもあってもよい。The ridges 7 may be partially scattered (not shown) in addition to being scattered almost uniformly on the entire surface of the blade 6 on the rotation direction side as shown in the figure. The number of the ridges 7 can be freely increased or decreased. Further, the cross-sectional shape of the ridge 7 may be a cross-sectional shape other than the arc shape.
【０００８】[0008]
【発明の効果】請求項１の発明では、凸条７によって翼
面で空気がスリップしにくくなり、凸条７の無い場合と
比べて、翼６により空気に付与される圧力・流速が増加
し、送風機効率が上がる、すなわち、同じ軸動力では風
量・静圧が増加して騒音を低減でき、逆に、同じ風量・
静圧では消費電力を低減できる。しかも、羽根車内の空
気流量分布に応じて凸条７の幅と高さを変化させてある
ので、上記効果を最大限に発揮させることができる。凸
条７は翼６の補強を兼ねており、高回転・高静圧の使用
に耐えることができ、かつ翼６を薄くして軽量化を図
り、送風機効率を上げることができる。According to the first aspect of the present invention, the air is less likely to slip on the wing surface due to the ridges 7, and the pressure and flow rate applied to the air by the wings 6 are increased as compared with the case without the ridges 7. Therefore, the blower efficiency increases, that is, the airflow and static pressure increase with the same shaft power to reduce noise, and conversely, the same airflow and
Static pressure can reduce power consumption. In addition, since the width and height of the ridges 7 are changed according to the air flow distribution in the impeller, the above effects can be maximized. The ridges 7 also serve to reinforce the blades 6, can withstand the use of high rotation and high static pressure, and can make the blades 6 thinner and lighter to increase the blower efficiency.
【０００９】請求項２の発明では、羽根車全体の軽量化
を図れ、一層効率を上げることができる。According to the second aspect of the present invention, the weight of the entire impeller can be reduced, and the efficiency can be further improved.
【図１】本発明を用いた送風機を示す断面図である。FIG. 1 is a sectional view showing a blower using the present invention.
【図２】本発明の羽根車の斜視図である。FIG. 2 is a perspective view of an impeller of the present invention.
【図３】回転軸と直交する方向に切断した翼の断面図で
ある。FIG. 3 is a cross-sectional view of a blade cut in a direction orthogonal to a rotation axis.
１ 羽根車 ４ 主板 ５ 側板 ６ 翼 ７ 凸条 Reference Signs List 1 impeller 4 main plate 5 side plate 6 wing 7 ridge
フロントページの続き (56)参考文献 特開 平５−312188（ＪＰ，Ａ) 特開 平５−87092（ＪＰ，Ａ) 特開 平５−340392（ＪＰ，Ａ) 特開 昭53−113903（ＪＰ，Ａ) 実開 昭63−160399（ＪＰ，Ｕ) 実開 昭62−185894（ＪＰ，Ｕ) 実開 昭61−99697（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) F04D 29/18 - 29/38 Continuation of front page (56) References JP-A-5-312188 (JP, A) JP-A-5-87092 (JP, A) JP-A-5-340392 (JP, A) JP-A-53-113903 (JP) , A) Fully open 1988-160399 (JP, U) Fully open 1987-185894 (JP, U) Fully open 1986-99697 (JP, U) (58) Fields investigated (Int. Cl. 6 , DB) Name) F04D 29/18-29/38
Claims (2)
…を周方向所定ピッチで設けて構成し、各翼６の回転方
向側の面に、回転軸に対して略平行状の複数の凸条７を
形成し、この凸条７の幅と高さを、上記側板５側から上
記主板４側に向かって増加させたことを特徴とする遠心
式送風機の羽根車。A plurality of wings (6, 6) are provided between a main plate (4) and a side plate (5).
Are provided at a predetermined pitch in the circumferential direction, and a plurality of ridges 7 substantially parallel to the rotation axis are formed on the surface of each wing 6 on the rotation direction side, and the width and height of the ridges 7 are formed. Is increased from the side plate 5 side to the main plate 4 side.
式送風機の羽根車。2. The centrifugal blower impeller according to claim 1, wherein the material is FRP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12182098A JP2884562B1 (en) | 1998-04-14 | 1998-04-14 | Centrifugal blower impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12182098A JP2884562B1 (en) | 1998-04-14 | 1998-04-14 | Centrifugal blower impeller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2884562B1 true JP2884562B1 (en) | 1999-04-19 |
| JPH11294386A JPH11294386A (en) | 1999-10-26 |
Family
ID=14820751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12182098A Expired - Lifetime JP2884562B1 (en) | 1998-04-14 | 1998-04-14 | Centrifugal blower impeller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2884562B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027815A (en) * | 2021-03-30 | 2021-06-25 | 浙江科贸智能机电股份有限公司 | Impeller comprising partially stepped blades and method for designing same |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005003566A1 (en) | 2003-06-23 | 2005-01-13 | Matsushita Electric Industrial Co., Ltd. | Centrifugal fan and apparatus using the same |
| JP2006307650A (en) * | 2005-04-26 | 2006-11-09 | Kunihiro Miyake | Multiblade fan |
| JP6063619B2 (en) | 2011-09-29 | 2017-01-18 | ミネベア株式会社 | Centrifugal fan |
-
1998
- 1998-04-14 JP JP12182098A patent/JP2884562B1/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027815A (en) * | 2021-03-30 | 2021-06-25 | 浙江科贸智能机电股份有限公司 | Impeller comprising partially stepped blades and method for designing same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11294386A (en) | 1999-10-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3204208B2 (en) | Mixed-flow blower impeller | |
| JP4035237B2 (en) | Axial blower | |
| EP0458864A4 (en) | Centrifugal fan with variably cambered blades | |
| US20020076323A1 (en) | Air blower | |
| US20060034686A1 (en) | Fan inlet and housing for a centrifugal blower whose impeller has forward curved fan blades | |
| JP3598900B2 (en) | Impeller for blower | |
| EP1210264B1 (en) | Centrifugal impeller with high blade camber | |
| JP3260544B2 (en) | Multi-wing fan | |
| JP2884562B1 (en) | Centrifugal blower impeller | |
| JP3608038B2 (en) | Propeller fan | |
| JP2000018194A (en) | Impeller for blower | |
| JP2000110783A (en) | Centrifugal fan | |
| JP3803184B2 (en) | Axial fan | |
| JPH0874790A (en) | Propeller fan | |
| JP3938252B2 (en) | Multi-blade blower | |
| JP3231679B2 (en) | Multi-wing blower | |
| JP2859448B2 (en) | Multi-wing fan | |
| JPH01237399A (en) | Runner of air blower | |
| JPH11247795A (en) | Impeller of centrifugal blower | |
| JP3575986B2 (en) | Multi-wing blower | |
| JPH07279891A (en) | Multi-blade blower | |
| JPH07145798A (en) | Impeller of axial blower | |
| CN209892508U (en) | Axial flow fan blade and electric fan | |
| JP3409747B2 (en) | Impeller for blower | |
| JP6930644B1 (en) | Propeller fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080212 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090212 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090212 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100212 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110212 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120212 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130212 Year of fee payment: 14 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140212 Year of fee payment: 15 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |