JPH03233195A - Impeller for centrifugal fan - Google Patents
Impeller for centrifugal fanInfo
- Publication number
- JPH03233195A JPH03233195A JP3116190A JP3116190A JPH03233195A JP H03233195 A JPH03233195 A JP H03233195A JP 3116190 A JP3116190 A JP 3116190A JP 3116190 A JP3116190 A JP 3116190A JP H03233195 A JPH03233195 A JP H03233195A
- Authority
- JP
- Japan
- Prior art keywords
- impeller
- blade
- band plate
- elements
- performance
- 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
- 239000011295 pitch Substances 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000000926 separation method Methods 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
【発明の詳細な説明】
S産業上の利用分野〕
この発明は、遠心送風機の羽根車の改良、詳しくは、生
産性の向上と性能の向上を図った複合型羽根車の構成に
関するものである。[Detailed Description of the Invention] S Industrial Application Field] This invention relates to an improvement of an impeller for a centrifugal blower, and more specifically, to a structure of a composite impeller that improves productivity and performance. .
遠心送風機、例えばシロッコファンは、多数の羽根板を
周方向に沿って等間隔に配した構成の羽根車を有してい
る。A centrifugal blower, such as a sirocco fan, has an impeller configured with a large number of blade plates arranged at equal intervals along the circumferential direction.
そのような羽根車は、金属板や樹脂等で製作されるが、
このうちの板金製の羽根車には、大別して次のような形
式のものがある。Such impellers are made of metal plates, resin, etc.
Among these, sheet metal impellers can be broadly classified into the following types:
(1)第8図(a)〜(C)に示すように、帯板部分(
1)にプレス加工を施して多数の羽根部分(2) (2
)−を形成し、これを円筒状に成形し、次で円板状並び
にリング状の側板(4) (5)を固着して羽根車(I
1)を得る所謂プレス形式のもの(尚図中(3)は羽根
車本体を示す。)
(2)第9図(a)〜(C)に示すように、外周に多数
の切欠き穴(6)を形成した円板状並びにリング状の側
板(4) (5)を用い、この間に配した多数の羽根F
i、(8)の両端カシメ部(7)を夫々側板(4) (
5)の切欠き穴(6)に挿通してカシメで羽根車(I2
)を得る所謂カシメ型式のもの。(1) As shown in Figures 8(a) to (C), the band plate portion (
1) is pressed to create a large number of blade parts (2) (2
)- is formed into a cylindrical shape, and then disk-shaped and ring-shaped side plates (4) and (5) are fixed to form an impeller (I).
(3) in the figure shows the impeller body. (2) As shown in Figures 9 (a) to (C), a large number of notched holes ( 6) and a large number of blades F arranged between them.
i, attach the caulked parts (7) at both ends of (8) to the side plates (4) (
5) through the notch hole (6) and swage it to remove the impeller (I2).
) is the so-called caulking type.
ところで、この種送風機においては、同一羽根形状なら
ば、その枚数を増加した方が性能が向上し、また、羽根
形状も、第10図に示すように入口角度β、を鋭角とし
、羽根入口部での空気流の剥離を防止するのが好ましい
ことが知られており、製作に当たってもそれらの要求に
沿うよう様々な工夫が加えられている。By the way, in this type of blower, if the blade shape is the same, the performance is improved by increasing the number of blades, and the blade shape is also such that the inlet angle β is an acute angle as shown in Fig. 10, and the blade inlet part is It is known that it is preferable to prevent separation of airflow in the air, and various measures have been taken to meet these requirements in manufacturing.
しからに、上記プレス型式の羽根車(I1)の場合は、
帯板部分(1)を切起こして羽根部分(2)(2)−を
形成しているため、羽根の配設ピ・ノチ(p)を羽根長
さ(j2)より小さくすることができず5羽根枚数を増
加させるには、羽根長さi)を縮小する必要がある。し
かも、この型式の羽根車では、羽根部分(2)を第10
図に示す如き形状に形成するのが、その製造方法上困難
であり、入口角度β1は鈍角になってしまう。Therefore, in the case of the above press type impeller (I1),
Since the blade parts (2) (2)- are formed by cutting and raising the band plate part (1), the blade arrangement pitch (p) cannot be made smaller than the blade length (j2). 5 To increase the number of blades, it is necessary to reduce the blade length i). Moreover, in this type of impeller, the blade portion (2) is the 10th
Due to the manufacturing method, it is difficult to form the shape as shown in the figure, and the entrance angle β1 becomes an obtuse angle.
従って、上記プレス型式の羽根車(II)は安価に製作
できるという利点を有するが、性能を高める上では、そ
の製造方法上の理由から、既に限界となっている。Therefore, although the press-type impeller (II) has the advantage of being manufactured at low cost, it has already reached its limit in terms of improving its performance due to the manufacturing method.
一方、上記カシメ型式の羽根車(I2)においては、プ
レス型式のものと異なり、羽根形状、羽根の配設ピンチ
(あるいは配設枚数)を自在に選択できるが、羽根板(
8)と側板(4) (5)との組立作業が悪く、しかも
部品点数が多いため、製造か難しく、コストも高いもの
になる。On the other hand, in the above-mentioned caulking type impeller (I2), unlike the press type impeller, the blade shape and the arrangement pinch (or number of blades) can be freely selected;
8) and the side plates (4) and (5) are difficult to assemble, and the number of parts is large, making manufacturing difficult and expensive.
この発明は、上記課題を解決するためになされたもので
、羽根車を、円形の帯板部分とこの帯板部分より突設し
た多数の羽根部分とから成る2以上の羽根車素子を組み
合わせて構成し、それら帯板部分を実質上同心に配する
ことにより、半径方向内方から外方に向かい実質的に拡
開する羽根間隙を保有する遠心送風機の羽根車である。This invention was made to solve the above problems, and an impeller is constructed by combining two or more impeller elements each consisting of a circular band plate portion and a large number of blade portions protruding from the band plate portion. The impeller of the centrifugal blower has a blade gap that substantially widens from the inside in the radial direction to the outside by arranging the strip portions substantially concentrically.
この発明に係る遠心送風気の羽根車によれば、円筒状を
なす羽根車素子を、所定個数同心状に組み合わせて、半
径方向内方から外方に向い、実質的に拡開する流通間隙
(羽根間隙)を形成し、羽根車の羽根長さに対する配列
ピッチを小さくすることができ、送風機性能の向上を図
ることができる。According to the impeller for centrifugal air blowing according to the present invention, a predetermined number of cylindrical impeller elements are concentrically combined, and a flow gap ( This makes it possible to reduce the arrangement pitch relative to the length of the impeller blades, thereby improving the performance of the blower.
第1図は、この発明に係る遠心送風機の羽根車の一実施
例を示すものである。図面において、第8図〜第10図
と同一あるいは対応する部材には、同一参照符号を附し
てその詳細説明を省略する。FIG. 1 shows an embodiment of an impeller for a centrifugal blower according to the present invention. In the drawings, members that are the same as or correspond to those in FIGS. 8 to 10 are given the same reference numerals, and detailed explanation thereof will be omitted.
この発明は、以下に例示するように、筒状の羽根車素子
0ωを複数個形成し、これら適宜組合わせて複合型の羽
根車としたものである。In this invention, as illustrated below, a plurality of cylindrical impeller elements 0ω are formed, and these are appropriately combined to form a composite impeller.
まず、製作に当たっては、従来のプレス成形法を適用し
て帯板(1)をプレス機械により略〔字状に切起して所
定の配設ピンチで羽根部分(2)を形成し、更に今一つ
の帯板(1゛)にも所定の羽根部分(2)を形成する。First, in manufacturing, the conventional press forming method is applied, and the band plate (1) is cut and raised into a shape of a letter using a press machine, and the blade part (2) is formed with a predetermined arrangement pinch. A predetermined blade portion (2) is also formed on the strip plate (1).
このとき、上記各帯板部分(1)(1’)における羽根
の配設ピッチは、後述する羽根車素子(10)(10’
)を形成した際に、同一のピンチ角となるように設置し
ておくのがよい。At this time, the arrangement pitch of the blades in each of the band plate portions (1) (1') is determined by the impeller element (10) (10') described later.
) should be installed so that they have the same pinch angle when formed.
次に、一方の帯板(1)の羽根部分(2)を、他方の帯
板(1“)において羽根部分(2′)を切起した際に形
成される窓孔(11)に挿通し、この状態にて両帯板(
1)(1”)を隣接させ、相互に円筒状に形成し、内方
に向けて羽根(2)(2’)・・・を突出した状態の羽
根車素子00)(10’)を形成すると同時に、これら
を同心状態にて重ね合せ、第1図に示す構成の羽根車(
1)を得る。Next, insert the blade part (2) of one band plate (1) into the window hole (11) formed when the blade part (2') is cut and raised in the other band plate (1''). , In this state, both strips (
1) (1") are placed adjacent to each other and formed into a cylindrical shape, forming an impeller element 00) (10') with blades (2) (2')... protruding inward. At the same time, these are stacked concentrically to form an impeller with the configuration shown in Figure 1 (
1) is obtained.
上記の羽根車(I)は、同−羽根長さを有する在来のプ
レス型式の羽根車(I1)に比べ、その配設ピッチは1
/2となり、前述した理由により、送風機性能が向上し
、しかも、その製作に当たっては、羽根車素子0ω(1
0’)を重ね合せて形成するのみであるから、製造上の
コストもほとんど変わらない。The above impeller (I) has an arrangement pitch of 1 compared to a conventional press-type impeller (I1) having the same blade length.
/2, and for the reasons mentioned above, the performance of the blower is improved, and when manufacturing it, the impeller element 0ω (1
0'), the manufacturing cost remains almost the same.
第2図に示す実施例は、外側の羽根車素子00)の内側
に、この羽根車素子θ0)における羽根部分(2)の内
方への突出量相当分小径の羽根車素子(10’)を連設
して構成したものである。In the embodiment shown in FIG. 2, an impeller element (10') having a small diameter corresponding to the inward protrusion of the blade portion (2) of this impeller element θ0) is placed inside the outer impeller element 00). It is composed of a series of .
以上の説明では、各羽根車素子GO)(10’)におけ
る羽根部分(2)は、両者とも内方に向けて形成しであ
るが、互いに逆方向、即ち、第3図に示すように、外方
側に位置する羽根車素子00)の羽根部分(2)は内方
に向けて、内方側に位置する羽根車素子(10’)の羽
根部分く2”)は外方に向けて形成し、上記両羽根車素
子θ0)(10′)の羽根部分(2)が同一ピンチ円上
に配列されるようにすることもできる。In the above explanation, the blade portions (2) of each impeller element GO) (10') are both formed inwardly, but in opposite directions, that is, as shown in FIG. The blade portion (2) of the impeller element 00) located on the outer side faces inward, and the blade portion 2") of the impeller element (10') located on the inner side faces outward. Alternatively, the blade portions (2) of both impeller elements θ0) (10') may be arranged on the same pinch circle.
この発明は、上記の実施例の他にも、第4図〜第7図に
夫々示す形態を包含するものである。In addition to the embodiments described above, the present invention includes embodiments shown in FIGS. 4 to 7, respectively.
それらの各実施例について以下に説明する。Each of these embodiments will be described below.
即ち、第4図に示すものは、外側の羽根車素子00)の
羽根部分(2)を内側に向けて形成すると共に、内側の
羽根素子(10“)の羽根部分(2゛)を外側に向けて
形成し、夫々の羽根車素子θ0)(10’)の羽根部分
を、他方の羽根車素子(10’)θ0)の窓孔(11’
) (I+)から夫々突出させた構成を有して成り、各
羽根車素子00)(to’)における羽根部分は、夫々
千鳥状配列となるように重ね合さった形状となっている
。That is, in the case shown in FIG. 4, the blade portion (2) of the outer impeller element 00) is formed facing inward, and the blade portion (2'') of the inner blade element (10'') is formed outward. The blade portion of each impeller element θ0) (10') is formed toward the window hole (11') of the other impeller element (10') θ0).
) (I+), and the blade portions of each impeller element 00) (to') are superimposed in a staggered arrangement.
この羽根車(1)の形態であっても、上記第2図に示す
羽根車・(1)と同様の作用効果を得ることができる。Even with this form of the impeller (1), it is possible to obtain the same effects as the impeller (1) shown in FIG. 2 above.
又、第5図に示すものは、外側の羽根車素子00)の羽
根部分(2)を外方に向けて形成すると共に、内側の羽
根車素子(10’)の羽根部分(2゛)を内方に向けて
形成し、内外方の羽根部分(2)(2’)を根元を実質
上一致させると共に、上記両羽根車素子(10)(10
’)の接合面に対して羽根部分(2)(2’)の湾曲方
向が略対称となるように両羽根車素子0ω(10’)を
重ね合せた構成より成っている。このようにすると、羽
根の入口角(β1)(第10図参照)を鋭角とすること
ができて、羽根形状をより理想的なものとすることがで
き、羽根入口部の空気流の剥離が防止できるため、更な
る性能の向上が図れる。Further, in the case shown in FIG. 5, the blade portion (2) of the outer impeller element 00) is formed to face outward, and the blade portion (2゛) of the inner impeller element (10') is formed to face outward. The inner and outer blade portions (2) (2') are formed to face inward so that their roots substantially coincide with each other, and both the impeller elements (10) (10
Both impeller elements 0ω (10') are superimposed so that the curved directions of the blade portions (2) and (2') are approximately symmetrical with respect to the joint surfaces of the impeller elements 0ω (10'). In this way, the inlet angle (β1) of the blade (see Figure 10) can be made acute, the blade shape can be made more ideal, and separation of the airflow at the blade inlet can be prevented. Since this can be prevented, further performance can be improved.
次に第6図に示す実施例は、外側となる羽根車素子θ0
)の羽根部分(2)を内方に向けて形成すると共に、内
側となる羽根車素子(10’)の羽根部分(2゛)を外
方に向けて形成じ、これらの羽根部分(2)(2’)先
端同志が連なるように、(即ち、第5図に示す実施例と
内外の羽根車素子0■(10’)の位置関係が逆となる
ように)配設したものである。Next, in the embodiment shown in FIG. 6, the outer impeller element θ0
) are formed so that the blade portion (2) of the impeller element (10') faces inward, and the blade portion (2゛) of the inner impeller element (10') is formed facing outward, and these blade portions (2) (2') The tips are arranged so that they are connected to each other (that is, the positional relationship between the inner and outer impeller elements 0 (10') is reversed from that of the embodiment shown in FIG. 5).
一方、第7図に示す実施例は、第6図に示す実施例の内
外の羽根車素子(10)(10’)を周方向にずらし、
各素子00)(10’)の羽根部分(2)(2’)先端
間に隙間を設けて構成しである。この例の場合は、羽根
部分(2)(2”)間の隙間(g)から噴出する空気流
により、羽根表面を流れる空気流の主流の剥離が防止で
き、より一層送風機性能を向上させることができる。On the other hand, in the embodiment shown in FIG. 7, the inner and outer impeller elements (10) (10') of the embodiment shown in FIG. 6 are shifted in the circumferential direction,
A gap is provided between the tips of the blade portions (2) (2') of each element 00) (10'). In this example, the airflow ejected from the gap (g) between the blade parts (2) (2'') can prevent separation of the mainstream airflow flowing on the blade surface, further improving the blower performance. I can do it.
尚、このように羽根間に隙間を設ける構造は、この実施
例に限らず、第2図、第4図、第5図に示すような実施
例においても容易に適用することができる。The structure in which gaps are provided between the blades in this manner is not limited to this embodiment, but can be easily applied to embodiments such as those shown in FIGS. 2, 4, and 5.
以上の実施例(よ、2つの羽根車素子GO)(10’)
を重ね合せて羽根車を得るものであるが、組合せる羽根
車素子を2つに限らず、3個以上としてもよく、更に、
夫々の羽根車本体θ0)(10’)をプレス型式のもの
とするのに対し、これに限らず他の型式ものであっても
、また、1つの羽根車を、複数型式の羽根車本体を組合
せて構成したものでもかまわない。The above example (two impeller elements GO) (10')
Although the impeller is obtained by stacking the impeller elements, the number of impeller elements to be combined is not limited to two, but may be three or more, and furthermore,
While each impeller body θ0) (10') is of a press type, it is not limited to this, and even if it is of other types, one impeller or multiple types of impeller bodies may be used. It may be configured by combining them.
[発明の効果]
以上説明したように、この発明によれば、プレス加工等
で羽根を形成した筒状の羽根車素子を同心円状二こ適宜
組み合わせることにより、羽根の配設ピッチに対する羽
根長さを大きく設定することができるため、羽根間での
空気流の剥離を防止して、送風機能力を向上することが
できるのみならず、上記の如く送風機能力が高いにもか
かわず簡単な構成のため、組立て性が良好で、羽根車自
体の高剛性化を実現することができる。[Effects of the Invention] As explained above, according to the present invention, by appropriately combining two cylindrical impeller elements in which the blades are formed by press working or the like in a concentric circle, the blade length relative to the blade arrangement pitch can be adjusted. can be set to a large value, which not only prevents separation of airflow between the blades and improves the blowing function, but also has a simple configuration despite the high blowing function as mentioned above. , easy to assemble, and high rigidity of the impeller itself can be achieved.
第1図は、この発明に係る遠心送風機の羽根車の一実施
例を示す要部拡大正面図である。
第2図〜第7図は、夫々この発明に係る遠心送風機の他
の実施例を示す要部拡大正面図である。
第8図、第9図は、夫々、在来の羽根車を説明するため
の概略図である。
第10図は、羽根車の理想的な羽根形状を例示する概略
図である。
([)・・・ 羽根車
(1)(1’)・・・帯板部分
(2)(2’)・・・羽根部分
0(lD(10’)・・・羽根車本体FIG. 1 is an enlarged front view of essential parts of an embodiment of an impeller of a centrifugal blower according to the present invention. 2 to 7 are enlarged front views of essential parts showing other embodiments of the centrifugal blower according to the present invention. FIGS. 8 and 9 are schematic diagrams for explaining conventional impellers, respectively. FIG. 10 is a schematic diagram illustrating an ideal blade shape of an impeller. ([)... Impeller (1) (1')... Strip part (2) (2')... Vane part 0 (lD (10')... Impeller body
Claims (1)
分より突設した多数の羽根部分(2)とから成る2以上
の羽根車素子(10)(10’)を組み合わせて構成し
、それら帯板部分を実質上同心に配することにより、半
径方向内方から外方に向かい実質的に拡開する羽根間隙
を保有することを特徴とする遠心送風機の羽根車。The impeller (I) is constructed by combining two or more impeller elements (10) (10') consisting of a circular strip part (1) and a large number of blade parts (2) protruding from this strip part. What is claimed is: 1. An impeller for a centrifugal blower, characterized in that the strip plate portions are arranged substantially concentrically to have a blade gap that substantially widens from the inside in the radial direction to the outside.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3116190A JPH03233195A (en) | 1990-02-08 | 1990-02-08 | Impeller for centrifugal fan |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3116190A JPH03233195A (en) | 1990-02-08 | 1990-02-08 | Impeller for centrifugal fan |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH03233195A true JPH03233195A (en) | 1991-10-17 |
Family
ID=12323723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3116190A Pending JPH03233195A (en) | 1990-02-08 | 1990-02-08 | Impeller for centrifugal fan |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH03233195A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6677237B2 (en) | 1998-12-16 | 2004-01-13 | Seiko Epson Corporation | Semiconductor chip, semiconductor device, circuit board and electronic equipment and production methods for them |
JP2005240557A (en) * | 2004-02-24 | 2005-09-08 | Kitsuta Seisan Kogyosho:Kk | Method of manufacturing impeller of water pump for cooling automobile engine |
JP2019218926A (en) * | 2018-06-21 | 2019-12-26 | シャープ株式会社 | Electric blower and electric cleaner |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50148908A (en) * | 1974-05-20 | 1975-11-28 | ||
JPS513409A (en) * | 1974-06-28 | 1976-01-12 | Hitachi Ltd | SOFUKYORANNAA |
JPS6223599A (en) * | 1985-07-22 | 1987-01-31 | Mitsubishi Electric Corp | Fan wheel of blower |
JPH01300096A (en) * | 1988-05-25 | 1989-12-04 | Taiho Kogyo Kk | Manufacture of multi-blade fan |
-
1990
- 1990-02-08 JP JP3116190A patent/JPH03233195A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50148908A (en) * | 1974-05-20 | 1975-11-28 | ||
JPS513409A (en) * | 1974-06-28 | 1976-01-12 | Hitachi Ltd | SOFUKYORANNAA |
JPS6223599A (en) * | 1985-07-22 | 1987-01-31 | Mitsubishi Electric Corp | Fan wheel of blower |
JPH01300096A (en) * | 1988-05-25 | 1989-12-04 | Taiho Kogyo Kk | Manufacture of multi-blade fan |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6677237B2 (en) | 1998-12-16 | 2004-01-13 | Seiko Epson Corporation | Semiconductor chip, semiconductor device, circuit board and electronic equipment and production methods for them |
JP2005240557A (en) * | 2004-02-24 | 2005-09-08 | Kitsuta Seisan Kogyosho:Kk | Method of manufacturing impeller of water pump for cooling automobile engine |
JP4557300B2 (en) * | 2004-02-24 | 2010-10-06 | 株式会社橘田生産工業所 | Impeller manufacturing method for water pump for automobile engine cooling |
JP2019218926A (en) * | 2018-06-21 | 2019-12-26 | シャープ株式会社 | Electric blower and electric cleaner |
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