JPH0783459A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPH0783459A JPH0783459A JP5225434A JP22543493A JPH0783459A JP H0783459 A JPH0783459 A JP H0783459A JP 5225434 A JP5225434 A JP 5225434A JP 22543493 A JP22543493 A JP 22543493A JP H0783459 A JPH0783459 A JP H0783459A
- Authority
- JP
- Japan
- Prior art keywords
- cross
- flow fan
- noise
- air conditioner
- blade
- 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
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
Abstract
(57)【要約】
【目的】横断流送風装置を有する空気調和機において風
量、騒音性能を向上させる。
【構成】複数のブレ−ドを有する貫流ファンを中心とし
てその前後にノ−ズとケ−シングで空気の風路を形成
し、吸込口には吸込グリルおよび熱交換器を配設してな
る貫流ファン装置においてブレ−ドの外周側をくの字に
曲げた貫流ファンで構成する。
【効果】従来の風量特性を維持して回転騒音を低減する
ことができ騒音特性が向上する。また、ノ−ズ形状が容
易になり生産性アップ、コスト低減が図れる。
(57) [Abstract] [Purpose] To improve air volume and noise performance in an air conditioner having a cross flow fan. [Structure] An air flow path is formed around the cross-flow fan having a plurality of blades by means of noses and casings, and a suction grill and a heat exchanger are arranged at the suction port. In the cross-flow fan device, a cross-flow fan is formed by bending the outer peripheral side of the blade into a dogleg shape. [Effect] Rotational noise can be reduced while maintaining the conventional air volume characteristic, and the noise characteristic is improved. In addition, the nose shape becomes easy, and productivity can be improved and cost can be reduced.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、空気調和機の送風装置
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner blower.
【０００２】[0002]
【従来の技術】以下、図面を参照しながら従来の空気調
和機の一例について説明する。2. Description of the Related Art An example of a conventional air conditioner will be described below with reference to the drawings.
【０００３】図７は、従来の貫流ファンを有する空気調
和機の通風経路の構造を示す。同図に示すように複数の
ブレ−ド１を有する貫流ファン２を中心として、その前
後にノ−ズ３とケ−シング４とで空気の通風路を形成し
吸込口には、吸込グリル５および熱交換器６を配設し、
貫流ファン装置を構成している。図７の矢印で示すよう
に、貫流ファン装置は、その構造上空気の流入方向と流
出方向が逆方向であること、あるいは、送風機を軸方向
に延ばすと、ほぼその長さの割合に比例して風量が増加
するなど他の送風機には見られない特徴を有するため近
年広く用いられるようになった。FIG. 7 shows a structure of a ventilation path of an air conditioner having a conventional cross-flow fan. As shown in the figure, an air ventilation path is formed by a nose 3 and a casing 4 in the front and back of a cross-flow fan 2 having a plurality of blades 1, and a suction grill 5 is provided at a suction port. And a heat exchanger 6 is provided,
It constitutes a once-through fan device. As shown by the arrow in FIG. 7, the cross-flow fan device has a structure in which the inflow direction and the outflow direction of air are opposite to each other, or when the blower is extended in the axial direction, it is proportional to the ratio of its length. It has been widely used in recent years because it has features not found in other blowers, such as an increase in air volume.
【０００４】ところで、この種の空気調和機において風
量騒音特性を向上させるため様々な方法がとられてき
た。１つの方法として貫流ファンのブレ−ド取付角度θ
が風量および騒音特性に大きな影響を与えることは知ら
れており、一般には風量アップを図るときは貫流ファン
のブレ−ド取付角度θを小さくする方法がとられてい
る。これ以外にも、吸込グリル５の格子ピッチを拡大し
たり、熱交換器のフィンピッチを拡げるなどの検討、吐
出口の形状検討により通風抵抗を低減し風量、騒音性能
の向上を図ることも行なわれている。By the way, various methods have been taken in order to improve the air flow noise characteristics in this type of air conditioner. As one method, the blade mounting angle θ of the cross-flow fan
Is known to have a great influence on the air flow rate and noise characteristics, and in general, when increasing the air flow rate, the blade mounting angle θ of the cross-flow fan is made small. In addition to this, the ventilation grille resistance is reduced and the air volume and noise performance are improved by studying such things as expanding the lattice pitch of the suction grille 5 and expanding the fin pitch of the heat exchanger, and examining the shape of the discharge port. Has been.
【０００５】従来例としては、特開平２−２０３１２９
号公報があり、本発明は、スタビライザを貫流ファンか
ら離し、かつ貫流ファンと前記スタビライザとの距離が
所定の寸法となる位置（最短距離の位置）が貫流ファン
の軸芯方向に対し所定の展開角度で徐々に展開したスタ
ビライザを有するものであった。As a conventional example, Japanese Patent Application Laid-Open No. 2-203129
In the present invention, the stabilizer is separated from the cross-flow fan, and the position where the distance between the cross-flow fan and the stabilizer is a predetermined dimension (the position of the shortest distance) is a predetermined expansion in the axial direction of the cross-flow fan. It had a stabilizer that gradually expanded at an angle.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら図７の構
成では、貫流ファンのブレ−ド取付角度θを小さくすれ
ば風量特性は向上するが、それとともに逆に騒音特性は
悪くなり図８に示すように貫流ファン２のブレ−ド枚数
ｚと回転数ｎに起因する回転騒音（一般に周波数ｎ×ｚ
の所に現われる）が突出する。このため騒音性能と風量
性能を考慮しながらブレ−ド取付角度を決定する必要が
あった。However, in the configuration of FIG. 7, the air flow characteristic is improved by decreasing the blade mounting angle θ of the cross-flow fan, but the noise characteristic is deteriorated conversely, as shown in FIG. In addition, the rotational noise (generally frequency n × z) caused by the blade number z and the rotational speed n of the cross-flow fan 2
Appears at)) stands out. Therefore, it was necessary to determine the blade mounting angle while considering noise performance and air flow performance.
【０００７】また、従来例のスタビライザの形状を改良
する方法では、スタビライザの形状が複雑になってしま
う欠点があった。つまり、一般的には、スタビライザは
露受皿と一体で形成するため金型形状が複雑になる欠点
があった。そのため、露皿とスタビライザを別々に形成
したあと組立てをすることもあり、コストアップの要因
となっていた。Further, the conventional method for improving the shape of the stabilizer has a drawback that the shape of the stabilizer becomes complicated. That is, since the stabilizer is generally formed integrally with the dew tray, there is a drawback that the shape of the mold becomes complicated. Therefore, the dew tray and the stabilizer may be separately formed and then assembled, which causes a cost increase.
【０００８】本発明は、従来の風量を確保しながら、騒
音特性を向上する目的で成されたものである。The present invention has been made for the purpose of improving noise characteristics while ensuring a conventional air flow rate.
【０００９】[0009]
【課題を解決するための手段】上記課題を解決するため
に本発明は、貫流ファンのブレ−ド形状において外周側
になるブレ−ド部分をくの字形により深く曲げたもので
ある。In order to solve the above-mentioned problems, the present invention is a blade shape of a cross-flow fan in which the blade portion on the outer peripheral side is deeply bent by a dogleg shape.
【００１０】[0010]
【作用】本発明は、上記した貫流ファンの外周側になる
ブレ−ド形状を改良することで、従来の風量を確保しな
がら貫流ファンのブレ−ド枚数と回転数に起因する回転
騒音を低減し騒音性能を向上することができる。According to the present invention, by improving the blade shape on the outer peripheral side of the above-mentioned cross-flow fan, the rotation noise due to the number of blades and the number of revolutions of the cross-flow fan is reduced while maintaining the conventional air volume. The noise performance can be improved.
【００１１】[0011]
【実施例】以下、本発明の一実施例について説明する。EXAMPLES An example of the present invention will be described below.
【００１２】図１は、貫流ファンを有する空気調和機の
通風経路の構造を示す。同図に示すように、複数のブレ
−ド１１を有する貫流ファン１２を中心として、その前
後にノ−ズ３とケ−シング４とで空気の通風路を形成
し、また吸込側には、吸込グリル５および熱交換器６を
配設し、貫流ファン装置を構成するものである。FIG. 1 shows the structure of a ventilation path of an air conditioner having a cross-flow fan. As shown in the figure, an air ventilation path is formed by the nose 3 and the casing 4 around the cross-flow fan 12 having a plurality of blades 11, and on the suction side, The suction grill 5 and the heat exchanger 6 are arranged to constitute a cross-flow fan device.
【００１３】貫流ファン１２のブレ−ドの取付角度θは
従来と同様であるが外周側の先端を図２の如く、ｌ寸法
だけ角度αに曲げてある。The blade mounting angle .theta. Of the cross-flow fan 12 is the same as that of the conventional one, but the tip on the outer peripheral side is bent to the angle .alpha. By the dimension l as shown in FIG.
【００１４】このように形成された貫流ファン装置にお
いて最適なｌ，αを選ぶと、送風量特性は、従来の風量
が確保できかつ、騒音特性は図３の如く、回転騒音が２
５ｄＢとなり従来に比べ８ｄＢ低減できるものである。
これにより風量を確保しながら騒音低減を図ることがで
き、耳ざわりな回転音がなくなり、聴感も向上する。In the once-through fan device formed as described above, when the optimum l and α are selected, the air flow rate characteristic is that the conventional air volume can be secured, and the noise characteristic is as shown in FIG.
It becomes 5 dB and can be reduced by 8 dB compared to the conventional one.
As a result, it is possible to reduce the noise while ensuring the air volume, eliminate the audible rotation noise, and improve the audibility.
【００１５】ブレ−ド先端のα角について、αを変化さ
せたときの風量と回転音の関係を横軸をα／θにして図
４に示す。ブレ−ド先端のα角が０のときは、風量は最
大であるが回転騒音も高い。ブレ−ド先端のα／θ角を
大きくしてゆくと回転騒音は低減できるが、同時に風量
も低減する関係となる。Regarding the α angle of the blade tip, the relationship between the air volume and the rotating sound when α is changed is shown in FIG. 4 with the horizontal axis being α / θ. When the α angle at the blade tip is 0, the air volume is maximum but the rotation noise is high. If the α / θ angle at the blade tip is increased, the rotational noise can be reduced, but at the same time, the air volume is also reduced.
【００１６】したがって、従来の風量を確保しながらし
かも、回転騒音が低い範囲のブレ−ド先端の角度は、α
／θ＝０．３５〜０．５５の範囲が最も効果的である。
また、ブレ−ド先端のｌ寸法と風量の関係を横軸をｌ／
Ｌにして図５に示す。ｌ／Ｌ＝０．１７を越えると風量
低下が著しくｌ／Ｌは０．１〜０．１７が最適である。Therefore, the angle of the blade tip in the range where the rotation noise is low while maintaining the conventional air volume is α
The range of /θ=0.35 to 0.55 is most effective.
In addition, the horizontal axis shows the relationship between the l dimension of the blade tip and the air volume as l /
L is shown in FIG. When l / L = 0.17 is exceeded, the air flow rate is significantly reduced, and l / L is optimally 0.1 to 0.17.
【００１７】なお、回転騒音以外の周波数を低減する目
的で図６に示すようにブレ−ド１１をひねりを加えると
さらに騒音特性が向上する。If the blade 11 is twisted as shown in FIG. 6 for the purpose of reducing frequencies other than the rotational noise, the noise characteristic is further improved.
【００１８】[0018]
【発明の効果】上記実施例で明らかなように本発明は、
貫流ファンのブレ−ドの外周側をくの字形状により深く
曲げたことにより、複雑なスタビライザあるいはノ−ズ
の形状にすることなく廉価に従来の風量を確保しながら
耳ざわりな回転騒音が低減でき聴感が向上するものであ
る。また、回転騒音を従来と同じレベルで使用すれば、
風量アップができ、空気調和機の性能向上に寄与できる
ものである。As is apparent from the above embodiment, the present invention is
By bending the outer circumferential side of the blade of the cross-flow fan deeply into a dogleg shape, it is possible to reduce the annoying rotational noise while securing the conventional air volume at a low price without making a complicated stabilizer or nose shape. It improves the feeling of hearing. Also, if you use rotation noise at the same level as before,
The amount of air can be increased and it can contribute to the performance improvement of the air conditioner.
【図１】本発明のセパレ−ト形空気調和機の側面断面図FIG. 1 is a side sectional view of a separate type air conditioner of the present invention.
【図２】本発明の貫流ファンのブレ−ド形状断面図FIG. 2 is a blade-shaped cross-sectional view of the cross-flow fan of the present invention.
【図３】本発明の効果を示す周波数と騒音の特性図FIG. 3 is a frequency and noise characteristic diagram showing the effect of the present invention.
【図４】本発明のブレ−ド先端曲げ角度と風量、騒音の
関係を示す特性図FIG. 4 is a characteristic diagram showing the relationship between the blade tip bending angle of the present invention and the air volume and noise.
【図５】ブレ−ド先端曲げ長さｌと風量を示す特性図FIG. 5 is a characteristic diagram showing the blade tip bending length 1 and the air volume.
【図６】本発明のブレ−ドにひねりを加えた貫流ファン
の外観図FIG. 6 is an external view of a cross-flow fan in which a blade of the present invention is twisted.
【図７】従来の空気調和機の側面断面図FIG. 7 is a side sectional view of a conventional air conditioner.
【図８】従来の空気調和機の周波数と騒音特性を示す特
性図FIG. 8 is a characteristic diagram showing frequency and noise characteristics of a conventional air conditioner.
１…貫流ファンのブレ−ド、 ２…貫流ファン、
３…ノ−ズ、４…ケ−シング、 ５
…吸込グリル、 ６…熱交換器、１１…本発明
の貫流ファンのブレ−ド、 １２…本発明の貫流ファ
ン。1 ... Blade of once-through fan, 2 ... Once-through fan,
3 ... Nose, 4 ... Casing, 5
... Suction grille, 6 ... Heat exchanger, 11 ... Blade of cross-flow fan of the present invention, 12 ... Cross-flow fan of the present invention.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 千葉 敏昭 栃木県下都賀郡大平町大字富田800番地株 式会社日立製作所リビング機器事業部内 (72)発明者 竹沢 健一 栃木県下都賀郡大平町大字富田800番地株 式会社日立製作所リビング機器事業部内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Toshiaki Chiba 800, Tomita, Ohira-cho, Shimotsuga-gun, Tochigi Living Company Division, Hitachi, Ltd. (72) Kenichi Takezawa 800, Tomita, Ohira-cho, Shimotsuga, Tochigi Living Company Division, Hitachi, Ltd.
Claims (2)
としてその前後にノ−ズとケ−シングで通風路を形成
し、吸込口には吸込グリルおよび熱交換器を配設してな
る貫流ファン装置を有する空気調和機において、ブレ−
ドの円弧外周側をより深く曲げた貫流ファンで構成した
ことを特徴とする空気調和機。1. A ventilation fan having a plurality of blades around which a ventilation passage is formed by a nose and a casing, and a suction grill and a heat exchanger are arranged at the suction opening. In an air conditioner having a once-through fan device,
An air conditioner characterized by being configured with a cross-flow fan in which the outer peripheral side of the arc is deeply bent.
とを特徴とする特許請求の範囲１項記載の空気調和機2. The air conditioner according to claim 1, wherein the blade of the once-through fan is twisted.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22543493A JP3329015B2 (en) | 1993-09-10 | 1993-09-10 | Air conditioner |
| MYPI94002339A MY112401A (en) | 1993-09-10 | 1994-09-07 | Air conditioner and through-flow incorporated therein. |
| CN 94113719 CN1057596C (en) | 1993-09-10 | 1994-09-10 | Air conditioner and through-flow incorporated therein |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22543493A JP3329015B2 (en) | 1993-09-10 | 1993-09-10 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0783459A true JPH0783459A (en) | 1995-03-28 |
| JP3329015B2 JP3329015B2 (en) | 2002-09-30 |
Family
ID=16829314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22543493A Expired - Fee Related JP3329015B2 (en) | 1993-09-10 | 1993-09-10 | Air conditioner |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3329015B2 (en) |
| CN (1) | CN1057596C (en) |
| MY (1) | MY112401A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612056A (en) * | 2018-12-19 | 2019-04-12 | 深圳创维空调科技有限公司 | Wind deflector control method, device and computer readable storage medium |
| CN110553399A (en) * | 2019-07-17 | 2019-12-10 | 珠海格力电器股份有限公司 | cross flow air duct assembly and fan heater |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100629328B1 (en) * | 2004-02-03 | 2006-09-29 | 엘지전자 주식회사 | Blower of vacuum cleaner |
| JP2006152886A (en) * | 2004-11-26 | 2006-06-15 | Toshiba Kyaria Kk | Cross-flow fan, air conditioner indoor unit |
| JP5269036B2 (en) * | 2010-11-08 | 2013-08-21 | 三菱電機株式会社 | Cross-flow fan and air conditioner equipped with the same |
| CN105971909B (en) * | 2016-05-05 | 2019-01-11 | 江苏汉威燃烧科技有限公司 | Through-flow blower unit and through-flow electric appliance |
| CN105971908B (en) * | 2016-05-05 | 2018-07-06 | 四川圣锦高新科技股份有限公司 | A kind of noise reduction draft mechanism and through-flow electric appliance |
| CN112524093A (en) * | 2019-09-17 | 2021-03-19 | 广东美的环境电器制造有限公司 | Air guide assembly and air supply device |
-
1993
- 1993-09-10 JP JP22543493A patent/JP3329015B2/en not_active Expired - Fee Related
-
1994
- 1994-09-07 MY MYPI94002339A patent/MY112401A/en unknown
- 1994-09-10 CN CN 94113719 patent/CN1057596C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612056A (en) * | 2018-12-19 | 2019-04-12 | 深圳创维空调科技有限公司 | Wind deflector control method, device and computer readable storage medium |
| CN109612056B (en) * | 2018-12-19 | 2021-06-11 | 创维空调科技(安徽)有限公司 | Air deflector control method and device and computer readable storage medium |
| CN110553399A (en) * | 2019-07-17 | 2019-12-10 | 珠海格力电器股份有限公司 | cross flow air duct assembly and fan heater |
| CN110553399B (en) * | 2019-07-17 | 2021-07-20 | 珠海格力电器股份有限公司 | Cross flow air duct assembly and fan heater |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3329015B2 (en) | 2002-09-30 |
| CN1106125A (en) | 1995-08-02 |
| MY112401A (en) | 2001-06-30 |
| CN1057596C (en) | 2000-10-18 |
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