JPH11264394A - Manufacture of horizontal flow fan and multiblade impleller - Google Patents

Manufacture of horizontal flow fan and multiblade impleller

Info

Publication number
JPH11264394A
JPH11264394A JP11024233A JP2423399A JPH11264394A JP H11264394 A JPH11264394 A JP H11264394A JP 11024233 A JP11024233 A JP 11024233A JP 2423399 A JP2423399 A JP 2423399A JP H11264394 A JPH11264394 A JP H11264394A
Authority
JP
Japan
Prior art keywords
blade
flow fan
cross flow
blades
partition 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.)
Granted
Application number
JP11024233A
Other languages
Japanese (ja)
Other versions
JP3465878B2 (en
Inventor
Hirobumi Horino
博文 堀野
Yoichiro Kobayashi
洋一郎 小林
Akira Nagamori
朗 永守
Satoru Konno
悟 金野
Yoshio Ikeda
義雄 池田
Tsutomu Hirose
勉 広瀬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP02423399A priority Critical patent/JP3465878B2/en
Publication of JPH11264394A publication Critical patent/JPH11264394A/en
Application granted granted Critical
Publication of JP3465878B2 publication Critical patent/JP3465878B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/02—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal
    • F04D17/04—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal of transverse-flow type
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/626—Mounting or removal of fans
    • 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
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663—Sound attenuation
    • F04D29/665—Sound attenuation by means of resonance chambers or interference
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
    • B29L2031/087—Propellers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PROBLEM TO BE SOLVED: To manufacture a horizontal flow fan capable of facilitating change of a blade shape and a fan length with low noise, with a high efficiency, and in low costs by fixing a piece of a multiblade impeller which is integratedly erected by inclining a plurality of blades annually and at a prescribed angle on one surface of a partition plate, while laminating a plurality of pieces in order in the axial direction of the multiblade impeller. SOLUTION: A horizontal flow fan 21 is used as, for example, an interior fan in an interior machine for an air conditioner, a plurality of blades 24 whose cross section is formed in a circular are shape are concentrically and annually arranged between right and left pair of end plates 22, 23, and are horizontally fixed while inclining at a prescribed angle. An annular partition plate 25 is arranged in an axial direction and at a required pitches on an axial direction intermediate part of each blade 24. In each multiblade impeller 26 composed of a plurality of pieces, a circular arc shaped fitting recessed part 25a wherein a tip end part of each blade 24 of the multiblade impellers arranged adjacently to each other is fitted and fixed, is formed on one surface of the partition plate 25. A plurality of blades 24 is formed on the other surface of the partition prate 25 by integratedly erecting by means of spray molding at a required installing pitches in a circumferential direction.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は空気調和機の室内フ
ァン等に好適な横流ファン並びにその製造方法および装
置に係り、特に、モールド成型した複数齣の多翼羽根車
を軸方向に順次積み重ねて固着した横流ファン並びにそ
の製造方法および装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cross flow fan suitable for an indoor fan or the like of an air conditioner and a method and an apparatus for manufacturing the same. More particularly, the present invention relates to a multi-blade impeller having a plurality of molded frames which are sequentially stacked in the axial direction. The present invention relates to a fixed cross flow fan and a method and apparatus for manufacturing the same.

【０００２】[0002]

【従来の技術】一般に、この種の横流ファンを室内ファ
ンとして組み込む空気調和機の一例としては図１７に示
すものがある。これは室内機１の本体ケーシング２の前
面２ａに、吸込グリル３と吹出グリル４とを図中上下に
配設し、これら吸込グリル３と吹出グリル４とをファン
ケーシング５内の通風路６により連通している。2. Description of the Related Art FIG. 17 shows an example of an air conditioner which generally incorporates such a cross flow fan as an indoor fan. In this configuration, a suction grill 3 and a blow grill 4 are arranged vertically on the front surface 2a of a main body casing 2 of the indoor unit 1 and the suction grill 3 and the blow grill 4 are connected by a ventilation passage 6 in a fan casing 5. Communicating.

【０００３】そして、この通風路６には、室内側熱交換
器７の下流側に、室内ファンとして横流ファン８を配設
し、吸込グリル３から本体ケーシング２内へ吸い込んだ
室内空気を室内側熱交換器７で熱交換して、冷風または
暖風を横流ファン８により吹出グリル４から室内へ再び
送風して冷房または暖房するようになっている。In the ventilation path 6, a cross flow fan 8 is disposed as an indoor fan on the downstream side of the indoor heat exchanger 7, and the indoor air sucked from the suction grill 3 into the main body casing 2 is supplied to the indoor side. The heat is exchanged by the heat exchanger 7, and cool air or warm air is blown again from the outlet grill 4 into the room by the cross flow fan 8 to cool or heat the room.

【０００４】そして、この種の従来の横流ファン８は、
例えば図１８に示すように左右一対の円板状の端板８
ａ，８ｂ間に、ファン軸Ｏに対して平行をなす複数の長
尺翼８ｃを周方向に所要のピッチを置いて横架し、軸方
向中間部には環状の仕切板８ｄを軸方向に所要のピッチ
で並設している。A conventional cross flow fan 8 of this type is
For example, as shown in FIG.
a, 8b, a plurality of long blades 8c, which are parallel to the fan axis O, are laid horizontally at a required pitch in the circumferential direction, and an annular partition plate 8d is provided in the axial middle part in the axial direction. They are juxtaposed at the required pitch.

【０００５】また、横流ファン８は図１７で示すファン
ケーシング５とノーズ９と共に送風機を構成し、ノーズ
９とファンケーシング５と横流ファン８との隙間の付近
では吸込み部分と吹出し部分とに分かれている。特に、
この２箇所の隙間部分では横流ファン８の長尺翼８ｃに
対する流速方向が逆転するために大きな圧力変動が発生
し、送風騒音の主音源となっている。Further, the cross flow fan 8 constitutes a blower together with the fan casing 5 and the nose 9 shown in FIG. 17, and is divided into a suction portion and a blow portion near the gap between the nose 9 and the fan casing 5 and the cross flow fan 8. I have. Especially,
In these two gaps, a large pressure fluctuation occurs because the direction of the flow velocity with respect to the long blades 8c of the cross flow fan 8 is reversed, and it is a main sound source of the blowing noise.

【０００６】この圧力変動による騒音は横流ファン８の
長尺翼８ｃの枚数×回転数の周波数と、その倍音の周波
数に大きなピークをもつ回転音Ｐａ，Ｐｂが図１９
（Ａ）の騒音波形Ｎに示すように発生し、圧力変動波形
が急峻であるために、これを基本波とする高調波（倍音
Ｐｂ）が発生し易いという特性がある。The noise due to the pressure fluctuation is represented by the frequency of the number of long blades 8c of the cross flow fan 8 times the number of rotations and the rotation sounds Pa and Pb having a large peak in the frequency of the overtones in FIG.
As shown in the noise waveform N of (A), since the pressure fluctuation waveform is steep, there is a characteristic that harmonics (overtone Pb) having this as a fundamental wave are easily generated.

【０００７】なお、図１９（Ａ）は横流ファン８の寸法
が、例えば直径が８８mm，全長が５９３mm，長尺翼８ｃ
の枚数が３５枚であり、長尺翼８ｃがファン軸Ｏと平行
であり、回転数２０回／sec で運転したときの送風機騒
音Ｎの分析図を示している。FIG. 19A shows the dimensions of the cross flow fan 8, for example, a diameter of 88 mm, a total length of 593 mm, and a long blade 8c.
Is an analysis diagram of the fan noise N when the number of the blades is 35, the long blade 8c is parallel to the fan shaft O, and is operated at a rotation speed of 20 times / sec.

【０００８】そして、横流ファン８とノーズ９およびフ
ァンケーシング５との隙間は小さくするほど回転数当り
の風量が増える傾向にあるが、この部分での圧力変動も
大きくなるため、回転音Ｎが大きくなり、その高調波成
分も増える。この隙間はある程度までは小さい方が風量
の増分が大きいため同一風量時の騒音値が下がり、送風
性能が上がる傾向にあるが、あまりこの隙間を小さくす
ると回転音Ｎが相対的に大きくなり、耳障りがする等聴
感上も好ましくないため、これらの隙間はあまり小さく
できない。[0008] The smaller the gap between the cross flow fan 8 and the nose 9 and the fan casing 5 is, the smaller the amount of air flow per number of revolutions tends to be. And its harmonic components also increase. To a certain extent, the smaller the gap, the larger the increase in air volume, so that the noise value at the same air volume tends to decrease and the air blowing performance tends to increase. These gaps cannot be made very small because they are not desirable from the viewpoint of hearing, such as flapping.

【０００９】また、長尺翼８ｃの長手方向がファン軸Ｏ
と平行に成形されている従来の横流ファン８を用いた送
風機では、横流ファン８と共に送風機を構成するノーズ
９，ファンケーシング５はファン軸Ｏと平行に構成され
ているため、１枚１枚の長尺翼８ｃはノーズ９およびフ
ァンケーシング５との各隙間付近を長尺翼８ｃの長さ方
向全体が同時に短時間で通過し、長尺翼８ｃの長さ分の
空間で同時に圧力変動が発生しようとするため、１枚の
長尺翼８ｃで発生する圧力変動の総和が大きく、波形の
歪みも大きいため高調波成分が多く発生し易かった（図
１９（Ａ））。この波形歪みは、ノーズ９，ファンケー
シング５と長尺翼８ｃの平行度によって大きく変化し、
高調波の数や大きさが変化し易い。すなわち長尺翼８ｃ
をファン軸Ｏと平行に作った横流ファン８を用いた送風
機では、回転音Ｎの高調波成分に個体差が大きく発生し
易い。このような高調波は一般的に騒音に含まれると、
耳障りな音となり易い性質がある。また、風量を増すた
めノーズ９との隙間，ファンケーシング５との隙間を狭
めると、回転音Ｎが著しく大きくなたるため、あまり隙
間を小さくできず、したがって、風量も増やすことがで
きなかった。The longitudinal direction of the long blade 8c is the fan axis O.
In the conventional blower using the cross flow fan 8 formed in parallel with the fan, the nose 9 and the fan casing 5 which constitute the blower together with the cross flow fan 8 are formed in parallel with the fan axis O, so that each fan is formed one by one. In the long blade 8c, the entire length of the long blade 8c passes in the vicinity of each gap between the nose 9 and the fan casing 5 at the same time in a short time, and pressure fluctuation occurs simultaneously in a space corresponding to the length of the long blade 8c. Therefore, the sum of the pressure fluctuations generated by one long blade 8c is large and the waveform distortion is large, so that many harmonic components are likely to be generated (FIG. 19A). This waveform distortion changes greatly depending on the parallelism of the nose 9, the fan casing 5, and the long blade 8c.
The number and size of the harmonics are likely to change. That is, the long wing 8c
In the blower using the cross flow fan 8 formed in parallel with the fan axis O, a large individual difference easily occurs in the harmonic component of the rotation sound N. Such harmonics are generally included in noise,
It has the property of producing harsh sounds. Further, when the gap between the nose 9 and the fan casing 5 is reduced to increase the air volume, the rotation noise N is significantly increased, so that the gap cannot be reduced much, and therefore the air volume cannot be increased.

【００１０】そこで、実公昭５９−３９１９６号，実開
昭５６−２０９２号，実開昭５６−４５１９６号の各公
報でそれぞれ記載された横流ファンは翼をファン軸Ｏに
対して非平行に形成することによって、圧力変動を連続
的に発生させて前記回転騒音Ｎを低減させることが提案
されている。Therefore, the cross-flow fans described in Japanese Utility Model Publication Nos. 59-39196, 56-2092, and 56-45196 each have blades formed non-parallel to the fan axis O. It has been proposed to reduce the rotational noise N by continuously generating pressure fluctuations.

【００１１】これを実現するためには、一般的に、図２
０で示す横流ファン１０のように複数の長尺翼１１を数
枚の円盤状の仕切板１２に貫通させ、これら長尺翼１１
を複数の仕切板１２と左右一対の端板１３ａ，１３ｂと
に固定した後、ねじる外力を加えて塑性変形させるか、
あるいは、図２１で示す横流ファン１４のように、複数
の長尺翼１５に外力を加えてねじった状態で複数の仕切
板１６と左右一対の端板１７ａ，１７ｂとに固定してい
る。In order to realize this, generally, FIG.
A plurality of long blades 11 penetrate through several disk-shaped partition plates 12 like a cross flow fan 10 indicated by reference numeral 0.
Is fixed to the plurality of partition plates 12 and the pair of left and right end plates 13a and 13b, and then an external torsion is applied to plastically deform or
Alternatively, as in a cross flow fan 14 shown in FIG. 21, a plurality of long blades 15 are fixed to a plurality of partition plates 16 and a pair of left and right end plates 17a, 17b while being twisted by applying an external force.

【００１２】また、実公昭５９−１９８３８号公報に記
載の横流ファンでは仕切板の片面上に、ファン軸に平行
な複数の翼を林立させ、他面に翼と同数の嵌合溝を設け
た多翼羽根車を用い、この多翼羽根車の翼の先端部を他
の多翼羽根車の仕切板上の嵌合溝に嵌合して連結し、１
本の横流ファンに組み立てているが、嵌合するために翼
を溝に押し込む際に、翼先端部を所定方向へひねるよう
に溝形状を設定している。Further, in the cross flow fan described in Japanese Utility Model Publication No. 59-19838, a plurality of blades parallel to the fan axis are provided on one side of a partition plate, and the same number of fitting grooves as the number of blades are provided on the other side. Using a multi-blade impeller, the tip of the blade of this multi-blade impeller is fitted and connected to a fitting groove on a partition plate of another multi-blade impeller.
Although it is assembled into a cross flow fan, the groove shape is set so that the tip of the blade is twisted in a predetermined direction when the blade is pushed into the groove for fitting.

【００１３】[0013]

【発明が解決しようとする課題】（１）しかしながら、
このように翼に外力を加えて変形させる従来の横流ファ
ンでは、翼材料内部に残留応力が大きく残り、寸法精度
を確保することが難しいために送風機の性能にばらつき
が発生し易い。また、このような残留応力を減らすため
には長時間のアニーリングが必要である。一方、翼材料
に応力を残さないようにするためには、翼自体を長手方
向に円弧状に形成する方法があるが、削成によれば材料
に無駄が生ずるうえに、削成工程が増える。Problems to be solved by the invention (1) However,
As described above, in the conventional cross-flow fan that deforms the blade by applying an external force, a large residual stress remains inside the blade material, and it is difficult to secure dimensional accuracy, so that the performance of the blower tends to vary. Further, long-time annealing is required to reduce such residual stress. On the other hand, there is a method in which the blade itself is formed in an arc shape in the longitudinal direction in order to prevent stress from remaining in the blade material. However, cutting involves waste of material and increases the number of cutting steps. .

【００１４】（２）また、実公昭５９−３９１９６号公
報記載の横流ファンでは長尺翼をねじった状態で成形し
た後、組み立ててゆくので、長尺翼の残留応力は少なく
て済むが、次の（３）の課題がある。(2) In the cross flow fan disclosed in Japanese Utility Model Publication No. 59-39196, the long blade is formed in a twisted state and then assembled, so that the residual stress of the long blade can be reduced. There is a problem (3).

【００１５】（３）一般的に、横流ファンに外部から衝
撃が加わると、翼と仕切板の接合部に応力が集中する。
そのため、その接合部で破壊変形が起こり易い性質があ
る。(3) Generally, when an external impact is applied to the cross flow fan, stress is concentrated on the joint between the blade and the partition plate.
Therefore, there is a property that destructive deformation easily occurs at the joint.

【００１６】したがって、長尺翼を仕切板の溝や穴に嵌
め込んで成型する場合は、翼と仕切板との接合手段とし
てカシメあるいは接着が考えられるが、いずれの方法で
も接合部分の強度・剛性は低く、比較的小さい外力の作
用でも接合部分の塑性変形が起こり易く、仕切板と翼と
の取付角度が変化してしまい易い。Therefore, when the long wing is fitted into the groove or the hole of the partition plate and molded, caulking or bonding can be considered as a joining means between the wing and the partition plate. The rigidity is low, the plastic deformation of the joint is likely to occur even with the action of a relatively small external force, and the mounting angle between the partition plate and the wing tends to change.

【００１７】さらに、ファン軸心に対する翼の形状、特
にファン軸心との非平行度を安定して製造することが難
しく、製造誤差が増大して送風性能にも大きなばらつき
を生じる。Furthermore, it is difficult to stably manufacture the shape of the blade with respect to the fan axis, particularly the degree of non-parallelism with the fan axis, and the manufacturing error increases, resulting in a large variation in air blowing performance.

【００１８】また、このような従来のカシメ止め方式で
は工作性を上げるために、圧着点以外の部分に隙間を作
るのが通常であるが、横流ファンでは翼面に軸方向に気
流が生じ、この気流が仕切板に激しく衝突するので、こ
のカシメ用の隙間に軸方向の気流が流れ込み、笛吹き音
が生じるという課題がある。In the conventional crimping method, a gap is usually formed at a portion other than the crimping point in order to improve workability. However, in a cross flow fan, an airflow is generated in a blade surface in an axial direction. Since this air flow violently collides with the partition plate, there is a problem that an axial air flow flows into the caulking gap and a whistling sound is generated.

【００１９】（４）実公昭５９−１９８３８号公報記載
の横流ファンは、翼の溶着溝を擂鉢状に形成しておき、
翼の溶着時にねじるように構成しており、翼の長さ違い
の製品を容易に製造することが可能であるが、一旦成形
した翼を組み立てる際に外力を加えてねじり変形させる
ので、上記（１）と同様の課題が生じる。(4) In the cross-flow fan described in Japanese Utility Model Publication No. 59-19838, the welding groove of the blade is formed in a mortar shape.
The blades are configured to be twisted at the time of welding, and it is possible to easily manufacture products with different blade lengths. However, when assembling the blade once formed, the blade is torsionally deformed by applying an external force. Problems similar to 1) occur.

【００２０】そこで本発明はこのような事情を考慮して
なされたもので、その目的は、低騒音で高効率、かつ翼
形状やファン長の変更が容易で信頼性が高く、安価な横
流ファン並びにその製造方法および装置を提供すること
にある。The present invention has been made in view of such circumstances, and has as its object to provide a low-noise, high-efficiency, easy-to-change blade shape and fan length, high reliability, and an inexpensive cross-flow fan. And a method and an apparatus for manufacturing the same.

【００２１】[0021]

【課題を解決するための手段】本発明は前記課題を解決
するために次のように構成される。The present invention is configured as follows to solve the above-mentioned problems.

【００２２】本願の請求項１に記載の発明は、成形型内
で射出成形され、その回転軸回りに回転させながら前記
成形型から抜き出された、仕切板の一面に複数の翼を環
状かつ所定角度傾斜させて一体に立設した１駒の多翼羽
根車を、その軸方向に複数駒順次積み重ねて固着したこ
とを特徴とする横流ファンである。According to the first aspect of the present invention, a plurality of blades are annularly formed on one surface of a partition plate, which is injection-molded in a mold, and is extracted from the mold while rotating around a rotation axis thereof. A cross-flow fan characterized in that a plurality of multi-blade impellers, which are integrally erected at a predetermined angle, are sequentially stacked and fixed in the axial direction.

【００２３】本願の請求項２に記載の発明は、請求項１
記載の横流ファンにおいて、前記積み重ねて固着された
複数駒の多翼羽根車の積層両端の多翼羽根車の一方の前
記各翼先端に端板を固着したことを特徴とする横流ファ
ンである。The invention described in claim 2 of the present application is claim 1
The cross flow fan according to any one of the preceding claims, wherein an end plate is fixed to one of the blade tips of one of the multi-blade impellers at both ends of the plurality of stacked multi-blade impellers.

【００２４】本願の請求項３に記載の発明は、請求項２
記載の横流ファンにおいて、前記積み重ねて固着された
複数駒の多翼羽根車の積層両端の多翼羽根車の、他方の
前記仕切板に、回転軸を結合せしめるボス部を形成した
ことを特徴とする横流ファンである。The invention described in claim 3 of the present application is claim 2
In the cross flow fan described above, a boss portion for connecting a rotating shaft is formed on the other partition plate of the multi-blade impellers at both ends of the stack of the multi-blade impellers fixedly stacked. He is a cross flow fan.

【００２５】請求項１〜９の発明によれば、成形型内で
射出成形され、その回転軸周りに回転させながら成形型
から抜き出された複数齣の多翼羽根車を軸方向に順次積
み重ねて固着して横流ファンを一体に形成するので、成
形型から多翼羽根車を抜く際の摩擦を低減して型寿命を
延ばすことができると共に、製造が簡単かつ安価である
上に、その多翼羽根車の積層数を適宜選択することによ
りファン軸長の変更が容易である。しかも、多翼羽根車
同士を周方向に適宜ずらす、いわゆる齣ずれの設定が容
易であり、翼形状も任意に設定することができる。According to the first to ninth aspects of the present invention, a multi-blade impeller of a plurality of exposures, which is injection-molded in a mold and is drawn from the mold while rotating about its rotation axis, is sequentially stacked in the axial direction. To form a cross flow fan integrally, so that the friction when removing the multi-blade impeller from the mold can be reduced to extend the life of the mold. The fan shaft length can be easily changed by appropriately selecting the number of stacked blade impellers. In addition, it is easy to set a so-called exposure shift, in which the blades are appropriately shifted in the circumferential direction, and the blade shape can be set arbitrarily.

【００２６】そして、複数の翼を、仕切板の一面に傾斜
して立設することによりファン軸に対して非平行に形成
しているので、この翼を有する横流ファンとノーズとフ
ァンケーシングの間隙で発生する圧力を連続的に変動さ
せることができる。このために、横流ファンの回転音を
低減することができる。Since the plurality of blades are formed so as to be non-parallel to the fan axis by being erected on one surface of the partition plate, the gap between the nose and the fan casing with the cross flow fan having the blades is provided. Can be continuously varied. For this reason, the rotation noise of the cross flow fan can be reduced.

【００２７】また、各翼と仕切板とを一体に成形するの
で、これら翼と仕切板との取付角度の精度を安定的に向
上させて送風性能のばらつきを低減することができる上
に、各翼を仕切板にカシメ止めする必要がないので、翼
のねじれ角度を大きくとることができる上に、仕切板に
カシメ止め用の間隙を設ける必要がないので、この間隙
に気流が流入して発生する笛吹き音を防止することがで
きる。Further, since each blade and the partition plate are integrally formed, the accuracy of the mounting angle between these blades and the partition plate can be stably improved to reduce the variation in the blowing performance, and furthermore, It is not necessary to caulk the wings to the partition plate, so that the torsion angle of the wings can be increased, and there is no need to provide a gap for caulking in the partition plate. A whistling sound can be prevented.

【００２８】本願の請求項４に記載の発明は、請求項１
〜３のいずれか１項に記載の横流ファンにおいて、翼
は、仕切板に、その周方向に複数種類の取付ピッチで環
状に立設されていることを特徴とする横流ファンであ
る。The invention described in claim 4 of the present application is claim 1
4. The cross flow fan according to any one of items 3 to 3, wherein the blades are provided on the partition plate in a ring shape at a plurality of types of mounting pitches in the circumferential direction thereof in a ring shape.

【００２９】この発明によれば、複数の翼を仕切板に、
その周方向に複数種類の取付ピッチで取り付けているの
で、複数翼の傾斜形状により低減せしめた回転音のピー
ク周波数を分散させることができる。このために、耳障
りを低減して聴感を改善することができる。According to the present invention, a plurality of wings are provided on the partition plate,
Since the plurality of blades are mounted in the circumferential direction at a plurality of mounting pitches, the peak frequency of the rotation noise reduced by the inclined shape of the plurality of blades can be dispersed. For this reason, it is possible to improve the audibility by reducing harshness.

【００３０】本願の請求項５に記載の発明は、請求項１
〜４のいずれか１項に記載の横流ファンにおいて、軸方
向で隣り合う多翼羽根車同士は、軸心回りに所定角度ず
れて連結されていることを特徴とする横流ファンであ
る。The invention described in claim 5 of the present application is claim 1
5. The cross flow fan according to any one of items 4 to 4, wherein the multi-blade impellers that are adjacent in the axial direction are connected to each other at a predetermined angle around the axis.

【００３１】この発明によれば、軸方向で隣り合う多翼
羽根車同士が軸心回りに所定角度ずれているので、仕切
板を挟んで隣り合う各翼で発生する音圧波同士を打ち消
し合うように位相差をつけることができる。このため
に、翼の傾斜形状により低減した回転音をさらに一段と
低減することができる。According to the present invention, since the multi-blade impellers adjacent in the axial direction are shifted by a predetermined angle around the axis, the sound pressure waves generated by the adjacent blades across the partition plate are canceled out. Can be provided with a phase difference. For this reason, the rotation noise reduced by the inclined shape of the blade can be further reduced.

【００３２】本願の請求項６に記載の発明は、請求項１
〜５のいずれか１項に記載の横流ファンにおいて、翼
は、その長手方向に直線状に形成されると共に、回転方
向側へ所定角度傾斜して立設されていることを特徴とす
る横流ファンである。[0032] The invention described in claim 6 of the present application is claim 1.
6. The cross flow fan according to any one of items 5 to 5, wherein the blades are formed linearly in the longitudinal direction, and are erected at a predetermined angle in the rotation direction. It is.

【００３３】この発明によれば、翼は、その長手方向に
直線状に形成されると共に、回転方向側へ所定角度傾斜
して立設されているので、多翼羽根車の成形型の製造が
容易である上に、翼の長手方向引張りおよび圧縮強度が
向上し、成形型から多翼羽根車を抜く際の摩擦を低減し
て型寿命を延ばすことができる。According to the present invention, the blades are formed linearly in the longitudinal direction, and are erected at a predetermined angle in the rotation direction, so that a multi-blade impeller mold can be manufactured. In addition to being easy, the tensile strength and compressive strength of the blade in the longitudinal direction are improved, and the friction when removing the multi-blade impeller from the mold can be reduced to extend the life of the mold.

【００３４】また、多翼羽根車の製品強度が向上して信
頼性が増し、さらに、強度向上の分、翼厚を薄型に形成
して軽量化し、送風量を増加させることができる。Further, the product strength of the multi-blade impeller is improved and the reliability is increased. Further, the blade thickness can be made thinner to reduce the weight and the amount of air blow can be increased by the increased strength.

【００３５】本願の請求項７に記載の発明は、請求項１
〜５のいずれか１項に記載の横流ファンにおいて、翼
は、その長手方向に曲線状に形成されてなることを特徴
とする横流ファンである。The invention described in claim 7 of the present application is claim 1
6. The cross flow fan according to any one of items 5 to 5, wherein the blades are formed in a curved shape in the longitudinal direction.

【００３６】この発明によれば、横流ファンの翼が長手
方向に曲線状に形成されているので、多翼羽根車を成形
型から抜く際の摩擦を低減して引き抜き易くする。According to the present invention, since the blades of the cross flow fan are formed in a curved shape in the longitudinal direction, the friction at the time of removing the multi-blade impeller from the mold is reduced to facilitate the pulling.

【００３７】本願の請求項８に記載の発明は、請求項１
〜７のいずれか１項に記載の横流ファンにおいて、翼
は、その回転軸に垂直な断面の厚みが根元側から先端側
へ行くに連れて小さくなるように形成されていることを
特徴とする横流ファンである。[0037] The invention described in claim 8 of the present application is claim 1.
8. The cross flow fan according to any one of items 7 to 7, wherein the blade is formed such that a thickness of a cross section perpendicular to a rotation axis thereof decreases from a root side to a tip side. He is a cross flow fan.

【００３８】この発明によれば、各翼の軸直角断面の厚
さを、その根元から先端へ向けて先細に形成したので、
射出成形後の多翼羽根車を型から抜く際の摩擦力を低減
して引き抜き易くすると共に、成形性を良好にすること
ができる。According to the present invention, the thickness of each blade at the section perpendicular to the axis is tapered from the root to the tip.
The frictional force when the multi-blade impeller after the injection molding is removed from the mold is reduced so that the multi-blade impeller can be easily pulled out, and the moldability can be improved.

【００３９】本願の請求項９に記載の発明は、円板状ま
たは環状の仕切板の一面に、複数の翼を環状に配して所
定角度傾斜させて一体に立設した横流ファン用多翼羽根
車の製造方法において、前記多翼羽根車を成形型内で一
体に射出成形した後、この多翼羽根車をその回転軸回り
に回転させながら前記成形型から抜き出す工程を有する
ことを特徴とする横流ファン用多翼羽根車の製造方法で
ある。According to a ninth aspect of the present invention, there is provided a multi-blade for a cross flow fan in which a plurality of blades are annularly arranged on one surface of a disk-shaped or ring-shaped partition plate and inclined integrally at a predetermined angle. In the method for manufacturing an impeller, after integrally injection-molding the multi-blade impeller in a molding die, the method further comprises a step of extracting the multi-blade impeller from the molding die while rotating the multi-blade impeller around its rotation axis. To manufacture a multi-blade impeller for a cross flow fan.

【００４０】この発明によれば、射出成形後の多翼羽根
車を、その回転軸回りに各翼の傾斜方向へ回転させなが
ら型から抜き出すので、各翼が仕切板に対して所定角度
傾斜していても、各翼に損傷を与えずに容易に抜き出す
ことができ、成型性が向上する上に型寿命が延ばすこと
ができる。According to the present invention, since the multi-blade impeller after injection molding is extracted from the mold while rotating in the direction of inclination of each blade around its rotation axis, each blade is inclined at a predetermined angle with respect to the partition plate. Even if it does, each wing can be easily pulled out without damaging it, and the moldability can be improved and the mold life can be extended.

【００４１】[0041]

【発明の実施の形態】以下、本発明の実施例を図１〜図
１６に基づいて説明する。なお、図１〜図１６中、同一
または相当部分には同一符号を付している。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 16, the same or corresponding parts are denoted by the same reference numerals.

【００４２】図１は本発明の一実施例の全体構成の斜視
図、図２は図１の分解斜視図、図３（Ａ），（Ｂ）は図
１の詳細斜視図であり、これらの図において、横流ファ
ン２１は、例えば図１７で示す空気調和機の室内機１に
室内ファンとして組み込む場合等に好適な横流ファンで
あり、左右一対の端板２２，２３間に、横断面が円弧状
の複数の翼２４を同心状に環状に配すると共に、所定角
度傾斜させて横架固着しており、各翼２４の軸方向中間
部には環状（リング状）の仕切板２５を軸方向に所要の
ピッチで配設しており、ファン軸Ｏ周りに回転すること
により軸方向に送風するようになっている。FIG. 1 is a perspective view of the overall structure of one embodiment of the present invention, FIG. 2 is an exploded perspective view of FIG. 1, and FIGS. 3 (A) and 3 (B) are detailed perspective views of FIG. In the figure, a cross flow fan 21 is a cross flow fan suitable for, for example, being incorporated as an indoor fan into the indoor unit 1 of the air conditioner shown in FIG. 17, and has a circular cross section between a pair of left and right end plates 22 and 23. A plurality of arc-shaped wings 24 are concentrically arranged in an annular shape, and are fixed at a predetermined angle to a horizontal suspension. An annular (ring-shaped) partition plate 25 is provided at an intermediate portion of each wing 24 in the axial direction. Are arranged at a required pitch, and are rotated around the fan axis O to blow air in the axial direction.

【００４３】横流ファン２１は図２に示すように一体成
形の複数齣の多翼羽根車２６を軸方向に順次同心状に固
着してなり、図２中右端の多翼羽根車２６の端板２３は
円板状または環状の仕切板２５の外面に、図示しないモ
ータ等の回転軸を止めねじ等により着脱自在に結合せし
めるボス部２７を同心状に一体、または一体的に形成し
ている。As shown in FIG. 2, the cross flow fan 21 has a multi-blade impeller 26 integrally formed with a plurality of exposures which are sequentially and concentrically fixed in the axial direction, and an end plate of the multi-blade impeller 26 at the right end in FIG. Numeral 23 is formed on the outer surface of a disk-shaped or annular partition plate 25 concentrically integrally or integrally with a boss 27 for detachably connecting a rotating shaft of a motor (not shown) with a set screw or the like.

【００４４】一方、図２中、左端の端板２２は、その図
中右隣の多翼羽根車２６の各翼２４の先端部を各嵌合溝
２２ａ内に嵌入固着せしめるものであり、その外面中央
部には同心状に軸２８を一体、または一体的に突設して
いる。On the other hand, the left end plate 22 in FIG. 2 is used to fit and fix the tip of each blade 24 of the multiblade impeller 26 on the right side in the drawing into each fitting groove 22a. A shaft 28 is integrally or concentrically protruded from the center of the outer surface.

【００４５】そして、各多翼羽根車２６は図２，図４に
示すように環状の仕切板２５の一面に、隣り合う多翼羽
根車２６の各翼２４の先端部をそれぞれ嵌入させて固着
する円弧状の嵌合凹部２５ａを形成する一方、仕切板２
５の他面には、複数の翼２４を周方向に所要の取付ピッ
チを置いて射出成型等により一体に立設している。Each of the multi-blade impellers 26 is fixed by fitting the tip of each of the blades 24 of the adjacent multi-blade impeller 26 onto one surface of an annular partition plate 25 as shown in FIGS. While forming the arc-shaped fitting concave portion 25a, the partition plate 2
A plurality of blades 24 are integrally provided upright on the other surface by injection molding or the like at a required mounting pitch in the circumferential direction.

【００４６】各翼２４はその横断面形状が回転方向に対
して前向きに傾斜する円弧状をなし、その回転方向前縁
２４ａが回転方向へファン軸Ｏに対して所定角度直線的
に傾斜するように仕切板２５に一体にモールド成形され
ている。但し、図５に示すように各翼２４を、その回転
方向前縁２４ｂが曲線的に傾斜するように一体に成形し
てもよい。Each wing 24 has an arc shape whose cross-sectional shape is inclined forward with respect to the rotational direction, and its leading edge 24a in the rotational direction is inclined linearly at a predetermined angle with respect to the fan axis O in the rotational direction. And molded integrally with the partition plate 25. However, as shown in FIG. 5, each wing 24 may be integrally formed such that its leading edge 24b in the rotational direction is curvedly inclined.

【００４７】また、各翼２４は底面図の図６とその部分
拡大図の図７に示すように、その横断面の厚さを仕切板
２５側の根元部２４ｃから翼先端部２４ｄへ向けて次第
に薄くなるように先細に形成すると共に、翼根元部２４
ｃと翼先端部２４ｄの両前縁部（外周縁部）同士を結ぶ
前縁２４ａの外形線に接する接線Ｌｏと、翼先端部２４
ｄ前縁からファン軸Ｏに垂下した垂線Ｓｏとがなす角度
θｏが９０°以上（θｏ≧９０°）であり、しかも、翼
根元部２４ｃと翼先端部２４ｄの両後縁部（内周縁部）
同士を結ぶ後縁２４ｅの外形線に接する接線Ｌｉと、翼
根元部２４ｃ後縁からファン軸Ｏに垂下した垂線Ｓｉと
がなす角度θｉが９０°以上（θｉ≧９０°）になるよ
うに形成されている。As shown in FIG. 6 of a bottom view and FIG. 7 of a partially enlarged view of each wing 24, the thickness of the cross section is changed from the root 24c on the partition plate 25 side to the wing tip 24d. The taper is formed so as to become gradually thinner, and the blade root portion 24 is formed.
c and a tangent line Lo contacting the outer shape of the leading edge 24a connecting both leading edges (outer peripheral edges) of the blade tip 24d, and the blade tip 24
d The angle θo formed by the vertical line So hanging down from the front edge to the fan axis O is 90 ° or more (θo ≧ 90 °), and both the rear edges (the inner peripheral edge) of the blade root portion 24c and the blade tip portion 24d. )
An angle θi formed between a tangent line Li contacting the outline of the trailing edge 24e connecting the two and a perpendicular line Si hanging from the trailing edge of the blade root portion 24c to the fan axis O is formed so as to be 90 ° or more (θi ≧ 90 °). Have been.

【００４８】そして、図８，図９に示すように横流ファ
ン２１は軸方向で隣り合う各多翼羽根車２６を、例えば
回転方向へ所定の齣ずれ角２９でずらして、順次同心状
に連結固着している。As shown in FIGS. 8 and 9, the cross flow fan 21 sequentially concentrically connects the multi-blade impellers 26 adjacent in the axial direction by, for example, a predetermined exposure shift angle 29 in the rotational direction. It is stuck.

【００４９】この場合、各翼２４は、その前縁部２４ａ
の先端が図９中破線で示す垂線よりも回転方向へねじれ
角３０だけ角度傾斜して仕切板２５に形成されており、
このねじれ角３０は上述の駒ずれ角２９よりも小さい値
に設定されている。In this case, each wing 24 has its leading edge 24a
9 is formed on the partition plate 25 so as to be inclined by a twist angle 30 in the rotational direction from the perpendicular shown by the broken line in FIG.
The torsion angle 30 is set to a value smaller than the above-mentioned piece shift angle 29.

【００５０】また、図１０に示すように各多翼羽根車２
６は、各仕切板２５上の各翼２４の周方向の取付ピッチ
を例えば３種類Ｐａ，Ｐｂ，Ｐｃ以上に設定している。As shown in FIG. 10, each multi-blade impeller 2
In No. 6, the circumferential mounting pitch of each blade 24 on each partition plate 25 is set to, for example, three types Pa, Pb, Pc or more.

【００５１】次に、前記多翼羽根車２６を、例えば射出
成形により一体に形成した後、金型（成形型）から抜き
出す方法および装置について説明する。Next, a method and an apparatus for integrally forming the multi-blade impeller 26 by, for example, injection molding and then extracting the same from a mold (mold) will be described.

【００５２】従来、射出成形品を、例えば金型の上型か
ら分離した下型より抜き出す場合は、図１１に示すよう
に複数の平行ノックピン３１を多翼羽根車２６の仕切板
２５の下面に突き当てて押し上げる方法が考えられる
が、この方法では、各翼２４が仕切板２５に対して所定
角度傾斜しているために、金型から簡単に抜き出すこと
ができず、無理に抜こうとすれば、翼２４等が破損して
しまう。Conventionally, when an injection molded product is extracted from a lower mold separated from an upper mold of a mold, for example, a plurality of parallel knock pins 31 are attached to the lower surface of the partition plate 25 of the multi-blade impeller 26 as shown in FIG. A method of abutting and pushing up is conceivable, but in this method, since each wing 24 is inclined at a predetermined angle with respect to the partition plate 25, it cannot be easily extracted from the mold, and it is difficult to forcibly extract it. If this occurs, the wings 24 and the like will be damaged.

【００５３】そこで、本発明者らは、多翼羽根車２６
を、その回転軸回りに各翼２４の傾斜方向へ回転させな
がら金型より抜き出す方法を提案し、そのためのエジェ
クタ装置を発明した。Therefore, the present inventors have proposed a multi-blade impeller 26.
And extracting it from the mold while rotating the blade around the rotation axis in the direction of inclination of each blade 24, and invented an ejector device for that.

【００５４】図１２はそのエジェクタ装置３２の一例の
要部斜視図であり、これは軸心回りに回転するエジェク
タシャフト３３にカム構造によってスキューカムプレー
ト３４を連動自在に設け、エジェクタシャフト３３を回
転させながら上下動させるようになっている。エジェク
タシャフト３３の上端部上にはエジェクタブロック３５
を連結している。FIG. 12 is a perspective view of an essential part of an example of the ejector device 32. In this figure, a skew cam plate 34 is provided on an ejector shaft 33 which rotates around an axis by a cam structure so as to be able to move freely, and the ejector shaft 33 is rotated. It is designed to move up and down while moving. An ejector block 35 is provided on the upper end of the ejector shaft 33.
Are linked.

【００５５】エジェクタブロック３５は図１３にも示す
ように、例えば図示しない上下に分離可能の金型の上金
型が下金型３６から分離されたときに、その下金型３６
の中心孔３６ａから上方へ突出して多翼羽根車２６をそ
の軸心回りに回転させながら下金型３６から上方へ抜き
出すものであり、円盤上の台座３７を有する。As shown in FIG. 13, for example, when an upper mold (not shown) which can be separated vertically is separated from a lower mold 36, the ejector block 35 is provided with the lower mold 36.
The multi-blade impeller 26 is protruded upward from the center hole 36a and is pulled out from the lower mold 36 while rotating the multi-blade impeller 26 around its axis, and has a pedestal 37 on a disk.

【００５６】この台座３７は、多翼羽根車２６の成形時
には下金型３６と共に、多翼羽根車２６の仕切板２５の
一部を形成し、この台座３７の円形の突部３７ａは仕切
板２５の中心孔２５ｂを形成する。The pedestal 37 forms a part of the partition plate 25 of the multi-blade impeller 26 together with the lower mold 36 when the multi-blade impeller 26 is formed, and the circular protrusion 37 a of the pedestal 37 is formed by a partition plate. 25 center holes 25b are formed.

【００５７】また、突部３７ａの外周部上面上には、図
１４でも示すように仕切板２５の内面（下面）に、例え
ば矩形状の突部２５ｃを係脱自在に嵌入せしめる嵌合凹
部３７ｂがそれぞれ形成され、台座３７の回転時に、回
転しながら多翼羽根車２６を持ち上げる際に、確実に多
翼羽根車２６が台座３７に追随するようになっている。
なお、仕切板２５の各突部２５ｃは図１５で示すように
円孔２５ｄでもよく、この場合は、各円孔２５ｄに係脱
自在に嵌合する突部をエジェクタブロック３６に突設す
る必要がある。On the upper surface of the outer peripheral portion of the projection 37a, a fitting recess 37b into which, for example, a rectangular projection 25c is removably fitted on the inner surface (lower surface) of the partition plate 25 as shown in FIG. When the pedestal 37 rotates, the multi-blade impeller 26 surely follows the pedestal 37 when the multi-blade impeller 26 is lifted while rotating.
Note that each projection 25c of the partition plate 25 may be a circular hole 25d as shown in FIG. 15, and in this case, it is necessary to protrude from the ejector block 36 a projection that removably engages with each circular hole 25d. There is.

【００５８】したがって、この多翼羽根車２６を製造す
る場合は、まず、図示しない金型の上金型と下金型３６
および台座３７を合せて形成される空間に樹脂材料が射
出されて多翼羽根車２６が成形される。Therefore, when manufacturing the multi-blade impeller 26, first, the upper mold and the lower mold 36 (not shown) are used.
The resin material is injected into a space formed by combining the pedestal 37 and the pedestal 37 to form the multi-blade impeller 26.

【００５９】その後、上金型が下金型から分離し、エジ
ェクタシャフト３３が多翼羽根車２６を下金型から排出
するように可動する。その際、スキューカムプレート３
４によってエジェクタシャフト３３が図中矢印Ａの方向
へ回転する。これに伴って、エジェクタブロック３５お
よび台座３７も回転し、これに成形された多翼羽根車２
６の仕切板２５も回転することになる。したがって、多
翼羽根車２６は回転しながら下金型３６から抜け出る。Thereafter, the upper mold separates from the lower mold, and the ejector shaft 33 moves so as to discharge the multi-blade impeller 26 from the lower mold. At that time, the skew cam plate 3
4 causes the ejector shaft 33 to rotate in the direction of arrow A in the figure. Accordingly, the ejector block 35 and the pedestal 37 also rotate, and the multi-blade impeller 2 formed thereon is rotated.
6 also rotates. Therefore, the multi-blade impeller 26 comes out of the lower mold 36 while rotating.

【００６０】次に、まず、本実施例による騒音低減効果
を図１９（Ｂ）〜（Ｅ）に基づいて説明する。なお、図
１９（Ｂ）〜（Ｅ）は、従来例の騒音分布を示す同図
（Ａ）の実験データを得た実験方法と同一の条件により
行なった結果を示している。つまり、横流ファンの寸法
と翼２４の枚数、単位時間当りの回転数を従来例実験と
同一にしている。Next, the noise reduction effect of the present embodiment will be described with reference to FIGS. 19 (B) to 19 (E) show the results obtained under the same conditions as the experimental method of obtaining the experimental data of FIG. 19A showing the noise distribution of the conventional example. That is, the dimensions of the cross flow fan, the number of blades 24, and the number of rotations per unit time are the same as those of the conventional example.

【００６１】まず、本実施例は図１等に示すように各翼
２４をファン軸Ｏに対して傾斜させて非平行に形成して
いるので、横流ファン２１と、図１７で示すノーズ９お
よびファンケーシング５との間隙で発生する圧力が連続
的に変動する。このために、齣ずれ角２９を設けず、さ
らに、各翼２４の周方向設置ピッチを等間隔にした場合
でも、図１９（Ｂ）に示すように回転音ピーク値Ｐａ
と、その倍音ピーク値Ｐｂとを共に低減することができ
る。First, in the present embodiment, as shown in FIG. 1 and the like, each blade 24 is formed non-parallel by being inclined with respect to the fan axis O, so that the cross flow fan 21 and the nose 9 shown in FIG. The pressure generated in the gap with the fan casing 5 varies continuously. For this reason, even when the exposure shift angle 29 is not provided and the pitch of the wings 24 in the circumferential direction is set at equal intervals, as shown in FIG.
And its overtone peak value Pb can be reduced.

【００６２】また、翼２４をファン軸Ｏに対して傾斜さ
せると共に、齣ずれ角２９を設けた場合には、仕切板２
５を挟んで隣り合う翼２４で発生する音圧波を、齣ずれ
角２９により相互に打ち消し合うように位相差をつける
ことができるので、翼２４の傾斜形状によって低減させ
た回転音の全体を、図１９（Ｃ）に示すように、さらに
一段と低減することができる。When the blade 24 is inclined with respect to the fan axis O and an exposure shift angle 29 is provided, the partition plate 2
Since the sound pressure waves generated by the blades 24 adjacent to each other with respect to 5 can be provided with a phase difference so as to cancel each other out by the exposure shift angle 29, the entire rotation sound reduced by the inclined shape of the blades 24 can be obtained. As shown in FIG. 19C, the power consumption can be further reduced.

【００６３】さらに、複数の翼２４の周方向の取付ピッ
チを複数種類Ｐａ〜Ｐｃ設定したので、齣ずれ角２９を
設けない場合でも、図１９（Ｄ）に示すように各翼２４
の傾斜形状により低減した回転音Ｎのピーク周波数成分
を分散させることができ、耳障り感を低減して聴感を改
善することができる。Further, since a plurality of types of mounting pitches Pa to Pc in the circumferential direction of the plurality of blades 24 are set, even when the exposure shift angle 29 is not provided, as shown in FIG.
It is possible to disperse the peak frequency component of the rotation sound N reduced by the inclination shape of, and reduce the unpleasant sensation and improve the audibility.

【００６４】また、複数の翼２４の周方向の取付ピッチ
を複数種類Ｐａ〜Ｐｃ設定すると共に、齣ずれ角２９を
設ける場合は、図１９（Ｅ）に示すように各翼２４の傾
斜形状により低減した回転音Ｎをさらに一段と低減し、
しかも、残った翼ピッチ音の周波数成分を分散させるこ
とができ、耳障り感を改善して聴感を改善することがで
きる。Further, when a plurality of types of mounting pitches Pa to Pc in the circumferential direction of the plurality of blades 24 are set and the exposure shift angle 29 is provided, the inclination shape of each blade 24 as shown in FIG. The reduced rotation noise N is further reduced,
In addition, the frequency component of the remaining wing pitch sound can be dispersed, so that the unpleasant sensation can be improved and the audibility can be improved.

【００６５】そして、本実施例は、仕切板２５と各翼２
４とを一体成形した多翼羽根車２６の複数齣を軸方向に
連結固着したので、その齣数を適宜調整することによ
り、横流ファン２１全体の長さの変更が容易である上
に、齣ずれ角２９を適宜選択することにより翼２４の形
状変更も非常に容易であり、製造コストを低減すること
ができる。In this embodiment, the partition plate 25 and each wing 2
Since the plurality of exposures of the multi-blade impeller 26 integrally formed with the exposure roller 4 are connected and fixed in the axial direction, the length of the entire cross flow fan 21 can be easily changed by appropriately adjusting the number of exposures. By appropriately selecting the shift angle 29, the shape of the blade 24 can be easily changed, and the manufacturing cost can be reduced.

【００６６】また、多翼羽根車２６は翼２４と仕切板２
５とを一体成形したので、次の諸効果がある。The multi-blade impeller 26 is composed of the blade 24 and the partition plate 2.
5 are integrally molded, the following effects are obtained.

【００６７】（１）翼２４を従来例のように後加工でひ
ねる必要がなく、残留歪みが生じないので、翼２４と仕
切板２５の強度を向上させることができる上に、翼２４
と仕切板２５との取付角度等の部品寸法の精度を安定し
て向上させることができるので、送風性能のばらつきを
低減することができる。(1) The blade 24 does not need to be twisted by post-processing as in the conventional example, and no residual distortion occurs. Therefore, the strength of the blade 24 and the partition plate 25 can be improved, and the blade 24 can be improved.
The accuracy of the component dimensions such as the mounting angle between the plate and the partition plate 25 can be stably improved, so that the variation in the blowing performance can be reduced.

【００６８】（２）翼２４のねじれ角３０を従来の手法
以上に大きくとれ、大幅な騒音低減が図れる。これに対
して図２０で示す従来のカシメ構造の横流ファン１０で
は、前記したようにねじれ角を大きく取ると、カシメ強
度が落ちる。そこで、翼１１に歪みが大きく残らないよ
うにするためには、平板を円弧状にカットしなければな
らず、材料に無駄が生じるという課題がある。(2) The torsion angle 30 of the blade 24 can be made larger than that of the conventional method, so that the noise can be significantly reduced. On the other hand, in the conventional cross-flow fan 10 having a caulking structure shown in FIG. 20, if the twist angle is increased as described above, the caulking strength decreases. Therefore, in order to prevent a large amount of distortion from remaining on the wing 11, a flat plate must be cut into an arc shape, and there is a problem in that material is wasted.

【００６９】（３）仕切板２５付近で従来生じた笛吹き
音等の異常音が生じない。つまり、横流ファン２１では
翼２４面上で軸方向の流れが必ず生じるため、仕切板２
５に気流が激しく衝突する特性がある。このため、従来
のカシメ方式では工作性を上げるために、圧着点以外の
部分に隙間を作るのが通常であった。しかし、この隙間
には軸方向の気流が流れ込み、笛吹き音が生じるという
問題があったが、本実施例では、仕切板２５には貫通す
る隙間がないので、これが原因となる笛吹音等の異常音
は殆ど発生しない。(3) No abnormal sound such as a whistling sound conventionally generated near the partition plate 25 is generated. In other words, since the axial flow always occurs on the surface of the wing 24 in the cross flow fan 21, the partition plate 2
5 has a characteristic that the airflow violently collides. For this reason, in the conventional caulking method, a gap is usually formed at a portion other than the crimping point in order to improve workability. However, there is a problem that the airflow in the axial direction flows into this gap and a whistling sound is generated. However, in this embodiment, since there is no gap penetrating through the partition plate 25, the whistling sound or the like caused by this is generated. Almost no abnormal sound is generated.

【００７０】そして、射出成形後、多翼羽根車２６を、
その軸心回りに回転させながら下金型３６から抜き出す
ので、この多翼羽根車２６を型から引き抜く際の摩擦力
を低減することができ、引抜が容易となる上に、成形性
が良好となる。また、各翼２４を先細形状に形成してい
るので、金型からの引抜を一段と容易にすることができ
る。After the injection molding, the multi-blade impeller 26 is
Since the multi-blade impeller 26 is extracted from the lower mold 36 while being rotated about its axis, the frictional force when the multi-blade impeller 26 is extracted from the mold can be reduced. Become. Further, since each wing 24 is formed in a tapered shape, pulling out from the mold can be further facilitated.

【００７１】さらに、各翼２４の前，後縁部２４ａ，２
４ｅの接線Ｌｏ，Ｌｉと、ファン軸Ｏの垂線Ｓｏ，Ｓｉ
とでなす角度θｏを、共に９０°以上に設定しているの
で、多翼羽根車２６を金型から回転させながら引き抜く
際に、各翼２４の前，後縁部２４ａ，２４ｅが型に触れ
なくなり、多翼羽根車２６の応力を低減して強度を高め
ると共に、型の摩耗が減少して型寿命が延びる。Further, the front and rear edge portions 24a, 2
4e tangent lines Lo and Li and the fan shaft O perpendicular lines So and Si
Are set to 90 ° or more, the front and rear edges 24a, 24e of each blade 24 touch the mold when the multi-blade impeller 26 is pulled out from the mold while rotating. As a result, the stress of the multi-blade impeller 26 is reduced to increase the strength, and the wear of the mold is reduced to extend the life of the mold.

【００７２】なお、前記実施例では、仕切板２５の一面
に翼２４を一体に立設した場合について説明したが、本
発明はこれに限定されるものではなく、例えば図１６で
示す横流ファン４１のように環状の仕切板４２の両面
に、複数の翼４３をそれぞれ一体に立設してもよい。In the above embodiment, the case where the wings 24 are integrally provided on one surface of the partition plate 25 has been described. However, the present invention is not limited to this. For example, the cross flow fan 41 shown in FIG. A plurality of blades 43 may be integrally provided on both surfaces of the annular partition plate 42 as described above.

【００７３】[0073]

【発明の効果】以上説明したように本願請求項１〜９の
発明によれば、成形型内で射出成形され、その回転軸周
りに回転させながら成形型から抜き出された複数齣の多
翼羽根車を軸方向に順次積み重ねて固着して横流ファン
を一体に形成するので、成形型から多翼羽根車を抜く際
の摩擦を低減して型寿命を延ばすことができると共に、
製造が簡単かつ安価である上に、その多翼羽根車の積層
数を適宜選択することによりファン軸長の変更が容易で
ある。しかも、多翼羽根車同士を周方向に適宜ずらす、
いわゆる齣ずれの設定が容易であり、翼形状も任意に設
定することができる。As described above, according to the first to ninth aspects of the present invention, a multi-blade multi-blade is formed by injection molding in a mold, and is extracted from the mold while being rotated about its rotation axis. Since the impellers are sequentially stacked in the axial direction and fixed to form a cross flow fan integrally, the friction when pulling out the multi-blade impeller from the mold can be reduced, and the life of the mold can be extended.
In addition to being simple and inexpensive to manufacture, the length of the fan shaft can be easily changed by appropriately selecting the number of layers of the multi-blade impeller. Moreover, the multi-blade impellers are appropriately shifted in the circumferential direction,
The so-called exposure shift can be easily set, and the wing shape can be set arbitrarily.

【００７４】そして、複数の翼を、仕切板の一面に傾斜
して立設することによりファン軸に対して非平行に形成
しているので、この翼を有する横流ファンとノーズとフ
ァンケーシングの間隙で発生する圧力を連続的に変動さ
せることができる。このために、横流ファンの回転音を
低減することができる。Since the plurality of blades are formed non-parallel to the fan axis by being erected on one surface of the partition plate, the cross flow fan having the blades, the nose, and the gap between the nose and the fan casing are formed. Can be continuously varied. For this reason, the rotation noise of the cross flow fan can be reduced.

【００７５】また、各翼と仕切板とを一体に成形するの
で、これら翼と仕切板との取付角度の精度を安定的に向
上させて送風性能のばらつきを低減することができる上
に、各翼を仕切板にカシメ止めする必要がないので、翼
のねじれ角度を大きくとることができる上に、仕切板に
カシメ止め用の間隙を設ける必要がないので、この間隙
に気流が流入して発生する笛吹き音を防止することがで
きる。Further, since each blade and the partition plate are formed integrally, the accuracy of the mounting angle between these blades and the partition plate can be stably improved to reduce the variation in the air blowing performance, and furthermore, It is not necessary to caulk the wings to the partition plate, so that the torsion angle of the wings can be increased, and there is no need to provide a gap for caulking in the partition plate. A whistling sound can be prevented.

【００７６】本願の請求項４に記載の発明によれば、複
数の翼を仕切板に、その周方向に複数種類の取付ピッチ
で取り付けているので、複数翼の傾斜形状により低減せ
しめた回転音のピーク周波数を分散させることができ
る。このために、耳障りを低減して聴感を改善すること
ができる。According to the fourth aspect of the present invention, since the plurality of blades are mounted on the partition plate at a plurality of types of mounting pitches in the circumferential direction, the rotational noise reduced by the inclined shape of the plurality of blades. Can be dispersed. For this reason, it is possible to improve the audibility by reducing harshness.

【００７７】本願の請求項５に記載の発明によれば、軸
方向で隣り合う多翼羽根車同士が軸心回りに所定角度ず
れているので、仕切板を挟んで隣り合う各翼で発生する
音圧波同士を打ち消し合うように位相差をつけることが
できる。このために、翼の傾斜形状により低減した回転
音をさらに一段と低減することができる。According to the invention described in claim 5 of the present application, since the multi-blade impellers that are adjacent in the axial direction are shifted by a predetermined angle around the axial center, the multi-blade impeller is generated by the adjacent blades across the partition plate. A phase difference can be provided so that sound pressure waves cancel each other. For this reason, the rotation noise reduced by the inclined shape of the blade can be further reduced.

【００７８】本願の請求項６に記載の発明によれば、翼
は、その長手方向に直線状に形成されると共に、回転方
向側へ所定角度傾斜して立設されているので、多翼羽根
車の成形型の製造が容易である上に、翼の長手方向引張
りおよび圧縮強度が向上し、成形型から多翼羽根車を抜
く際の摩擦を低減して型寿命を延ばすことができる。According to the invention as set forth in claim 6 of the present application, the blades are formed linearly in the longitudinal direction and are erected at a predetermined angle in the rotation direction, so that the multi-blade blades are provided. In addition to being easy to manufacture a mold for a car, the tensile strength and the compressive strength of the blade in the longitudinal direction are improved, and the friction when the multi-blade impeller is removed from the mold can be extended to extend the life of the mold.

【００７９】また、多翼羽根車の製品強度が向上して信
頼性が増し、さらに、強度向上の分、翼厚を薄型に形成
して軽量化し、送風量を増加させることができる。Further, the product strength of the multi-blade impeller is improved and the reliability is increased. Further, the blade thickness can be made thinner to reduce the weight and the amount of air blow can be increased by the increased strength.

【００８０】本願の請求項７に記載の発明によれば、横
流ファンの翼が長手方向に曲線状に形成されているの
で、多翼羽根車を成形型から抜く際の摩擦を低減して引
き抜き易くする。According to the seventh aspect of the present invention, since the blades of the cross flow fan are formed in a curved shape in the longitudinal direction, the friction at the time of removing the multi-blade impeller from the mold is reduced and the blade is pulled out. Make it easier.

【００８１】本願の請求項８に記載の発明によれば、各
翼の軸直角断面の厚さを、その根元から先端へ向けて先
細に形成したので、射出成形後の多翼羽根車を型から抜
く際の摩擦力を低減して引き抜き易くすると共に、成形
性を良好にすることができる。According to the eighth aspect of the present invention, the thickness of the cross section perpendicular to the axis of each blade is tapered from the root to the tip, so that the multi-blade impeller after the injection molding is formed. It is possible to reduce the frictional force when pulling out from the material to make it easy to pull out, and to improve the moldability.

【００８２】本願の請求項９に記載の発明によれば、射
出成形後の多翼羽根車を、その回転軸回りに各翼の傾斜
方向へ回転させながら型から抜き出すので、各翼が仕切
板に対して所定角度傾斜していても、各翼に損傷を与え
ずに容易に抜き出すことができ、成型性が向上する上に
型寿命が延ばすことができる。According to the ninth aspect of the present invention, since the multi-blade impeller after the injection molding is removed from the mold while rotating in the direction of inclination of each blade around its rotation axis, each blade is separated from the partition plate. However, even if the blades are inclined at a predetermined angle, the blades can be easily extracted without damaging the respective blades, so that the moldability can be improved and the mold life can be extended.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明に係る横流ファンの一実施例の斜視図。FIG. 1 is a perspective view of one embodiment of a cross flow fan according to the present invention.

【図２】図１で示す実施例の分解斜視図。FIG. 2 is an exploded perspective view of the embodiment shown in FIG.

【図３】（Ａ），（Ｂ）は図１の各詳細拡大図。FIGS. 3A and 3B are detailed enlarged views of FIG. 1;

【図４】図２で示す多翼羽根車の一例の斜視図。FIG. 4 is a perspective view of an example of the multi-blade impeller shown in FIG. 2;

【図５】図２で示す多翼羽根車の他の一例の斜視図。FIG. 5 is a perspective view of another example of the multi-blade impeller shown in FIG. 2;

【図６】図４の底面図。FIG. 6 is a bottom view of FIG. 4;

【図７】図６の要部拡大図。FIG. 7 is an enlarged view of a main part of FIG. 6;

【図８】図１で示す実施例の横流ファンの齣ずれ角を示
す斜視図。FIG. 8 is a perspective view showing an exposure shift angle of the cross flow fan of the embodiment shown in FIG.

【図９】図８で示す齣ずれ角とねじれ角を示す要部拡大
斜視図。FIG. 9 is an enlarged perspective view of a main part showing an exposure shift angle and a twist angle shown in FIG. 8;

【図１０】図６で示す多翼羽根車の翼取付ピッチを示す
底面図。FIG. 10 is a bottom view showing the blade mounting pitch of the multi-blade impeller shown in FIG. 6;

【図１１】図２等で示す一体成形の多翼羽根車を従来の
平行ノックピンにより金型より抜け出す方法を示す要部
拡大斜視図。FIG. 11 is an enlarged perspective view of a main part showing a method of pulling out the integrally formed multi-blade impeller shown in FIG. 2 and the like from a mold using a conventional parallel knock pin.

【図１２】図２等で示す多翼羽根車を型から抜け出すた
めのエジェクタ装置の斜視図。FIG. 12 is a perspective view of an ejector device for removing the multiblade impeller shown in FIG. 2 and the like from a mold.

【図１３】図１２で示すエジェクタブロックにより図２
等で示す多翼羽根車を下金型から抜け出す状態を示す斜
視図。FIG. 13 shows an ejector block shown in FIG.
FIG. 7 is a perspective view showing a state in which the multi-blade impeller shown in FIG.

【図１４】図１３で示す多翼羽根車の部分拡大斜視図。14 is a partially enlarged perspective view of the multi-blade impeller shown in FIG.

【図１５】図１３で示す多翼羽根車の変形例の部分拡大
斜視図。FIG. 15 is a partially enlarged perspective view of a modified example of the multi-blade impeller shown in FIG.

【図１６】本発明の他の実施例の一部切欠分解斜視図。FIG. 16 is an exploded perspective view with a part cut away according to another embodiment of the present invention.

【図１７】従来の空気調和機における室内機の一例の縦
断面図。FIG. 17 is a longitudinal sectional view of an example of an indoor unit in a conventional air conditioner.

【図１８】図１７で示す従来の横流ファンの斜視図。FIG. 18 is a perspective view of the conventional cross flow fan shown in FIG.

【図１９】（Ａ）は図１８で示す従来の横流ファンの回
転音の分布図、（Ｂ）〜（Ｅ）は図１等で示す本発明の
各実施例の回転音の分布図。19 (A) is a distribution diagram of the rotating sound of the conventional cross flow fan shown in FIG. 18, and (B) to (E) are distribution diagrams of the rotating sound of each embodiment of the present invention shown in FIG. 1 and the like.

【図２０】従来の他の横流ファンの斜視図。FIG. 20 is a perspective view of another conventional cross flow fan.

【図２１】図２０で示す横流ファンの分解斜視図。FIG. 21 is an exploded perspective view of the cross flow fan shown in FIG. 20;

【符号の説明】[Explanation of symbols]

２１，４１ 横流ファン ２２，２３ 端板 ２４，４３ 翼 ２４ａ 翼前縁（直線） ２４ｂ 翼前縁（曲線） ２４ｃ 翼根元部 ２４ｄ 翼先端部 ２５ 仕切板 ２５ａ 円弧状嵌合凹部 ２５ｂ 中心孔 ２６ 多翼羽根車 ２７ ボス部 ２８ 軸 ２９ 齣ずれ角 ３０ ねじれ角 ３１ 平行ノックピン ３２ カム式エジェクタ装置 ３３ エジェクタシャフト ３４ スキューカムプレート ３５ エジェクタブロック ３６ 下金型 ３７ 台座 ３７ａ 円形突部 ３７ｂ 嵌合凹部 21, 41 Cross flow fan 22, 23 End plate 24, 43 Blade 24a Blade leading edge (straight) 24b Blade leading edge (curve) 24c Blade root 24d Blade tip 25 Partition plate 25a Arc-shaped fitting recess 25b Center hole 26 Many Blade impeller 27 Boss part 28 Shaft 29 Exposure misalignment angle 30 Helix angle 31 Parallel knock pin 32 Cam type ejector device 33 Ejector shaft 34 Skew cam plate 35 Ejector block 36 Lower mold 37 Pedestal 37a Circular projection 37b Fitting recess

───────────────────────────────────────────────────── フロントページの続き (72)発明者 金野 悟 静岡県富士市蓼原336番地 株式会社東芝 富士工場内 (72)発明者 池田 義雄 静岡県富士市蓼原336番地 株式会社東芝 富士工場内 (72)発明者 広瀬 勉 静岡県富士市蓼原336番地 株式会社東芝 富士工場内 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Satoru Kanno 336 Tatehara, Fuji City, Shizuoka Prefecture Inside Fuji Plant, Toshiba Corporation (72) Inventor Yoshio Ikeda 336 Tatehara Field, Fuji City, Shizuoka Prefecture Inside Fuji Plant, Toshiba Corporation (72) Inventor Tsutomu Hirose 336 Tatehara, Fuji City, Shizuoka Prefecture Toshiba Corporation Fuji Plant

Claims (9)

【特許請求の範囲】[Claims] 【請求項１】 成形型内で射出成形され、その回転軸回
りに回転させながら前記成形型から抜き出された、仕切
板の一面に複数の翼を環状かつ所定角度傾斜させて一体
に立設した１駒の多翼羽根車を、その軸方向に複数駒順
次積み重ねて固着したことを特徴とする横流ファン。1. A plurality of blades are injection-molded in a molding die, and are erected integrally with one surface of a partition plate, which is extracted from the molding die while rotating about a rotation axis thereof, at an annular angle and at a predetermined angle. A cross flow fan, wherein a plurality of the multi-blade impellers are sequentially stacked and fixed in the axial direction thereof. 【請求項２】 請求項１記載の横流ファンにおいて、前
記積み重ねて固着された複数駒の多翼羽根車の積層両端
の多翼羽根車の一方の前記各翼先端に端板を固着したこ
とを特徴とする横流ファン。2. The cross flow fan according to claim 1, wherein an end plate is fixed to each of the blade tips of one of the multi-blade impellers at both ends of the plurality of stacked multi-blade impellers. And a cross flow fan. 【請求項３】 請求項２記載の横流ファンにおいて、前
記積み重ねて固着された複数駒の多翼羽根車の積層両端
の多翼羽根車の、他方の前記仕切板に、回転軸を結合せ
しめるボス部を形成したことを特徴とする横流ファン。3. The cross flow fan according to claim 2, wherein a boss for connecting a rotating shaft to the other partition plate of the multi-blade impellers at both ends of the stack of the plurality of multi-blade impellers that are stacked and fixed. A cross flow fan characterized by forming a. 【請求項４】 請求項１〜３のいずれか１項に記載の横
流ファンにおいて、翼は、仕切板に、その周方向に複数
種類の取付ピッチで環状に立設されていることを特徴と
する横流ファン。4. The cross flow fan according to claim 1, wherein the blades are provided on the partition plate in a ring shape at a plurality of kinds of mounting pitches in a circumferential direction thereof. A cross flow fan. 【請求項５】 請求項１〜４のいずれか１項に記載の横
流ファンにおいて、軸方向で隣り合う多翼羽根車同士
は、軸心回りに所定角度ずれて連結されていることを特
徴とする横流ファン。5. The cross flow fan according to claim 1, wherein the multi-blade impellers adjacent in the axial direction are connected to each other at a predetermined angle around the axis. A cross flow fan. 【請求項６】 請求項１〜５のいずれか１項に記載の横
流ファンにおいて、翼は、その長手方向に直線状に形成
されると共に、回転方向側へ所定角度傾斜して立設され
ていることを特徴とする横流ファン。6. The cross flow fan according to any one of claims 1 to 5, wherein the blades are formed linearly in a longitudinal direction thereof, and are erected at a predetermined angle in a rotation direction. Cross flow fan 【請求項７】 請求項１〜５のいずれか１項に記載の横
流ファンにおいて、翼は、その長手方向に曲線状に形成
されてなることを特徴とする横流ファン。7. The cross flow fan according to claim 1, wherein the blades are formed in a curved shape in the longitudinal direction. 【請求項８】 請求項１〜７のいずれか１項に記載の横
流ファンにおいて、翼は、その回転軸に垂直な断面の厚
みが根元側から先端側へ行くに連れて小さくなるように
形成されていることを特徴とする横流ファン。8. The cross flow fan according to claim 1, wherein the blades are formed such that the thickness of the cross section perpendicular to the rotation axis decreases from the root side to the tip side. A cross flow fan characterized by being made. 【請求項９】 円板状または環状の仕切板の一面に、複
数の翼を環状に配して所定角度傾斜させて一体に立設し
た横流ファン用多翼羽根車の製造方法において、前記多
翼羽根車を成形型内で一体に射出成形した後、この多翼
羽根車をその回転軸回りに回転させながら前記成形型か
ら抜き出す工程を有することを特徴とする横流ファン用
多翼羽根車の製造方法。9. A method for manufacturing a multi-blade impeller for a cross-flow fan, wherein a plurality of blades are annularly arranged on one surface of a disk-shaped or annular partition plate and inclined at a predetermined angle to stand integrally. A multi-blade impeller for a cross-flow fan, comprising a step of extracting the blade from the molding die while rotating the blade around an axis of rotation after integrally injection-molding the blade in a molding die. Production method.
JP02423399A 1999-02-01 1999-02-01 Method of manufacturing cross flow fan and multi-blade impeller Expired - Lifetime JP3465878B2 (en)

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Application Number Priority Date Filing Date Title
JP02423399A JP3465878B2 (en) 1999-02-01 1999-02-01 Method of manufacturing cross flow fan and multi-blade impeller

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Application Number Priority Date Filing Date Title
JP02423399A JP3465878B2 (en) 1999-02-01 1999-02-01 Method of manufacturing cross flow fan and multi-blade impeller

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP9337494A Division JP2988897B2 (en) 1997-12-08 1997-12-08 Cross flow fan

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Publication Number Publication Date
JPH11264394A true JPH11264394A (en) 1999-09-28
JP3465878B2 JP3465878B2 (en) 2003-11-10

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002266788A (en) * 2001-03-06 2002-09-18 Mikuni Plast Kk Cylindrical impeller
KR100789815B1 (en) * 2002-01-24 2007-12-31 엘지전자 주식회사 structure of boundary plate in crossflow fan
WO2010047242A1 (en) 2008-10-22 2010-04-29 シャープ株式会社 Molding machine for following-through fan, blower and blade wheel
JP2010106853A (en) * 2010-02-16 2010-05-13 Sharp Corp Cross-flow fan, blower, and impeller forming machine
JP2010106854A (en) * 2010-02-16 2010-05-13 Sharp Corp Cross-flow fan, blower, and impeller forming machine
CN103195749A (en) * 2012-01-10 2013-07-10 珠海格力电器股份有限公司 Centrifugal fan blade, centrifugal fan and air conditioner indoor unit
WO2018110597A1 (en) * 2016-12-15 2018-06-21 株式会社ヴァレオジャパン Blower

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002266788A (en) * 2001-03-06 2002-09-18 Mikuni Plast Kk Cylindrical impeller
KR100789815B1 (en) * 2002-01-24 2007-12-31 엘지전자 주식회사 structure of boundary plate in crossflow fan
WO2010047242A1 (en) 2008-10-22 2010-04-29 シャープ株式会社 Molding machine for following-through fan, blower and blade wheel
JP2010101222A (en) * 2008-10-22 2010-05-06 Sharp Corp Cross-flow fan, blower, and molding machine for blade wheel
JP4549416B2 (en) * 2008-10-22 2010-09-22 シャープ株式会社 Cross-flow fan, blower and impeller molding machine
CN102187100A (en) * 2008-10-22 2011-09-14 夏普株式会社 Molding machine for following-through fan, blower and blade wheel
JP2010106853A (en) * 2010-02-16 2010-05-13 Sharp Corp Cross-flow fan, blower, and impeller forming machine
JP2010106854A (en) * 2010-02-16 2010-05-13 Sharp Corp Cross-flow fan, blower, and impeller forming machine
CN103195749A (en) * 2012-01-10 2013-07-10 珠海格力电器股份有限公司 Centrifugal fan blade, centrifugal fan and air conditioner indoor unit
WO2018110597A1 (en) * 2016-12-15 2018-06-21 株式会社ヴァレオジャパン Blower

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