JP2533977Y2 - Air conditioner blower - Google Patents
Air conditioner blowerInfo
- Publication number
- JP2533977Y2 JP2533977Y2 JP1991019312U JP1931291U JP2533977Y2 JP 2533977 Y2 JP2533977 Y2 JP 2533977Y2 JP 1991019312 U JP1991019312 U JP 1991019312U JP 1931291 U JP1931291 U JP 1931291U JP 2533977 Y2 JP2533977 Y2 JP 2533977Y2
- Authority
- JP
- Japan
- Prior art keywords
- bell mouth
- air conditioner
- blower
- side end
- suction side
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、ベルマウスを有するプ
ロペラファンを用いた空気調和機の送風装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blower for an air conditioner using a propeller fan having a bell mouth.
【０００２】[0002]
【従来の技術】従来、この種の空気調和機の送風装置と
して、例えば図３に示すようなものが知られている(特
開昭６３−２４３４９５号公報)。この送風装置は、ベ
ルマウス１４の中心にモータ１５で駆動されるプロペラ
ファン１６を設けるとともに、ベルマウス１４の吹出側
端の外周にプロペラファン１６の外径よりも小径の開口
を有する仕切板１７を設けている。そして、フィルタ１
２,熱交換器１３を経てケース１１内に吸い込んだ外気
をプロペラファン１６で吹き出す際、ファン外周部の低
圧による空気の逆流を、上記仕切板１７で防止して、逆
流による乱流騒音の発生をなくすようにしている。2. Description of the Related Art Conventionally, as a blower of this type of air conditioner, for example, a blower as shown in FIG. 3 has been known (Japanese Patent Laid-Open No. 63-243495). In this blower, a propeller fan 16 driven by a motor 15 is provided at the center of a bell mouth 14, and a partition plate 17 having an opening having a smaller diameter than the outer diameter of the propeller fan 16 is provided on the outer periphery of the outlet side of the bell mouth 14. Is provided. And filter 1
2. When the outside air sucked into the case 11 through the heat exchanger 13 is blown out by the propeller fan 16, the backflow of the air due to the low pressure of the outer periphery of the fan is prevented by the partition plate 17, and the turbulent noise due to the backflow is generated. I try to eliminate.
【０００３】[0003]
【考案が解決しようとする課題】ところが、上記従来の
送風装置は、ベルマウス１４の吸込側端にエッジ１４a
が露出した状態であるため、この部分で図３に示すよう
な吸込気流の剥離による乱れや渦が生じ、上記仕切板１
７で低減された騒音を上回る騒音を発生するという欠点
がある。そこで、本考案の目的は、ベルマウスの吸込側
端における気流の乱れや渦を抑制することによって、運
転時の騒音を低減できる空気調和機の送風装置を提供す
ることにある。However, the above-described conventional blower has an edge 14a at the suction side end of the bell mouth 14.
Is exposed, turbulence or eddies are generated in this portion due to separation of the suction airflow as shown in FIG.
7 has the disadvantage of generating more noise than the reduced noise. Therefore, an object of the present invention is to provide a blower for an air conditioner that can reduce noise during operation by suppressing turbulence and vortex of an airflow at a suction side end of a bell mouth.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するた
め、本考案の空気調和機の送風装置は、図１に例示する
ように、ベルマウス１を有するプロペラファン１６を用
いたものにおいて、上記ベルマウス１の吸込側端１aの
外周に接するように、表面が多孔質で略円形断面を有す
る環状部分２を設けたことを特徴とする。なお、上記環
状部分２を、上記ベルマウス１とは別体で、上記ベルマ
ウス１の吸込側端１aの外周に固定された円環２として
もよい。Means for Solving the Problems To achieve the above object, an air conditioner blower of the present invention uses a propeller fan 16 having a bell mouth 1 as illustrated in FIG. An annular portion 2 having a porous surface and a substantially circular cross section is provided so as to be in contact with the outer periphery of the suction side end 1a of the bell mouth 1. The annular portion 2 may be formed separately from the bell mouth 1 as an annular ring 2 fixed to the outer periphery of the suction side end 1a of the bell mouth 1.
【０００５】[0005]
【作用】プロペラファン１６によって吸い込まれる空気
は、ベルマウス１の吸込側端１aの外周に接して設けら
れた略円形断面を有する環状部分２に沿って、乱れや渦
を殆んど生じることなく円滑に流れるので、乱れや渦に
よる騒音が低減する。また、環状部分２は、表面が多孔
質なので、生じた騒音を吸収する。従って、送風装置の
運転時の騒音が大幅に抑制される。尚、上記環状部分２
を、ベルマウス１の吸込側端１aの外周に固定された別
体の円環２にすれば、ベルマウスに一体加工する場合に
比して製造が容易化する。The air sucked by the propeller fan 16 flows along the annular portion 2 having a substantially circular cross section provided in contact with the outer periphery of the suction side end 1a of the bell mouth 1 with almost no turbulence or eddies. The smooth flow reduces noise due to turbulence and vortices. Further, the annular portion 2 has a porous surface, and thus absorbs generated noise. Therefore, noise during the operation of the blower is significantly reduced. In addition, the said annular part 2
Is formed as a separate ring 2 fixed to the outer periphery of the suction side end 1a of the bell mouth 1, thereby facilitating the production as compared with the case where the bell mouth 1 is integrally processed.
【０００６】[0006]
【実施例】以下、本考案を図示の実施例により詳細に説
明する。図１は、本考案の空気調和機の送風装置のベル
マウスの一例を示す断面図であり、図示しない部分は、
図３で述べた従来の空気調和機と同じ構成である。プロ
ペラファン１６を取り囲む上記ベルマウス１の吸込側端
１aの外周には、環状部分としてのウレタン樹脂で成形
された円環２を嵌合して接着している。円環２は、表面
が多孔質をなすとともに、直径Ｄがベルマウス１の平行
部１bの幅Ｗよりも小径の円形断面を有する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments. FIG. 1 is a cross-sectional view showing an example of a bell mouth of a blower of the air conditioner of the present invention,
It has the same configuration as the conventional air conditioner described in FIG. An annular ring 2 formed of urethane resin as an annular portion is fitted and adhered to the outer periphery of the suction side end 1a of the bell mouth 1 surrounding the propeller fan 16. The ring 2 has a porous surface and a circular cross section whose diameter D is smaller than the width W of the parallel portion 1 b of the bell mouth 1.
【０００７】上記構成のベルマウス部は、次のように作
用する。プロペラファン１６によって吸い込まれる空気
は、図１中の矢印で示すように、ベルマウス１の吸込側
端１aの外周に嵌合,接着されたウレタン樹脂製の円環２
に沿って、乱れや渦を殆んど生じることなく円滑に流れ
るので、乱れや渦による騒音が低減する。また、円環２
の表面は、多孔質のウレタン樹脂なので、生じた騒音を
さらに吸収する。従って、プロペラファン１６の運転時
の騒音が大幅に抑制され、低減される。なお、上記実施
例では、ベルマウス１の吸込側端１aの環状部分を、ベ
ルマウス１６に一体加工せず、別体の円環２を外嵌,接
着しているので、環状部分の加工ひいては送風装置の製
造が容易になるという利点がある。The bell mouth portion having the above structure operates as follows. The air sucked by the propeller fan 16 is, as shown by an arrow in FIG. 1, a ring 2 made of urethane resin fitted and bonded to the outer periphery of the suction side end 1a of the bell mouth 1.
, The air flows smoothly with almost no turbulence or vortex, so that noise due to the turbulence or vortex is reduced. Ring 2
Is a porous urethane resin, so that the generated noise is further absorbed. Therefore, noise during operation of the propeller fan 16 is significantly reduced and reduced. In the above embodiment, the annular portion of the suction side end 1a of the bell mouth 1 is not integrally formed with the bell mouth 16, but a separate ring 2 is externally fitted and adhered. There is an advantage that the production of the blowing device is facilitated.
【０００８】図２は、無響室において上記実施例を運転
した場合の騒音レベルおよび吹出風量の測定結果を、円
環２のないものにおける同様の測定結果と比較して、実
線および破線で夫々示している。図から明らかなよう
に、実施例(実線)は、通常の運転状態(中風量)で騒音レ
ベルが従来例(破線)に比べて略0.5dＢ低いことが判る。
一方、同一風量を得るに必要なプロペラファン１６の回
転数は、実施例(実線)の方が２r.p.m.ほど僅かに高い
が、有意差は認められない。つまり、同じ吹出能力を維
持しつつ、騒音を0.5dＢ程度低減できることが判る。FIG. 2 compares the measurement results of the noise level and the blown air volume when the above-described embodiment is operated in an anechoic chamber with the same measurement results without the ring 2 by solid lines and broken lines, respectively. Is shown. As is clear from the figure, in the example (solid line), the noise level in a normal operation state (medium air volume) is lower than the conventional example (broken line) by about 0.5 dB.
On the other hand, the rotation speed of the propeller fan 16 required to obtain the same air flow is slightly higher in the embodiment (solid line), about 2 rpm, but no significant difference is observed. That is, it can be seen that the noise can be reduced by about 0.5 dB while maintaining the same blowing performance.
【０００９】なお、上記実施例では、ベルマウス１の吸
込側端の環状部分をウレタン樹脂製の円環２で形成した
が、これを他の材料からなる表面が多孔質のパイプや丸
棒を環状に加工して吸込側端の外周に接合してもよく、
ベルマウスの吸込側端にプレス等で一体に略円形断面を
もつように形成してもよい。In the above-described embodiment, the annular portion at the suction side end of the bell mouth 1 is formed of a ring 2 made of urethane resin, but this is made of a pipe or round bar made of another material and having a porous surface. It may be processed into a ring and joined to the outer periphery of the suction side end,
The bell mouth may be formed integrally with the suction side end of the bell mouth by a press or the like so as to have a substantially circular cross section.
【００１０】[0010]
【考案の効果】以上の説明で明らかなように、本考案の
空気調和機の送風装置は、プロペラファンを取り囲むベ
ルマウスの吸込側端の外周に接するように、表面が多孔
質で略円形断面を有する環状部分を設けているので、プ
ロペラファンによる吸い込み気流が上記環状部分に沿っ
て円滑に流れて、乱れや渦による運転中の騒音が大幅に
低減される。As is apparent from the above description, the blower of the air conditioner of the present invention has a porous surface and a substantially circular cross section so as to be in contact with the outer periphery of the suction side end of the bell mouth surrounding the propeller fan. Is provided, the airflow sucked by the propeller fan flows smoothly along the annular portion, and noise during operation due to turbulence and vortex is greatly reduced.
【図１】 本考案の空気調和機の送風装置のベルマウス
の一例を示す断面図である。FIG. 1 is a sectional view showing an example of a bell mouth of a blower of an air conditioner of the present invention.
【図２】 上記ベルマウスおよび従来のベルマウスにつ
いての騒音レベルおよび吹出風量の測定結果を示す図で
ある。FIG. 2 is a diagram showing measurement results of a noise level and a blown air volume of the bell mouth and a conventional bell mouth.
【図３】 従来の空気調和機の送風装置の断面図であ
る。FIG. 3 is a sectional view of a conventional air blower for an air conditioner.
１…ベルマウス、１a…吸込側端、２…円環、１１…ケ
ース、１３…熱交換器、１６…プロペラファン。DESCRIPTION OF SYMBOLS 1 ... Bell mouth, 1a ... Suction side end, 2 ... Ring, 11 ... Case, 13 ... Heat exchanger, 16 ... Propeller fan.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭63−243495（ＪＰ，Ａ) 特開 平３−70908（ＪＰ，Ａ) 実開 昭63−4399（ＪＰ，Ｕ) ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-243495 (JP, A) JP-A-3-70908 (JP, A)
Claims (2)
(１６)を用いた空気調和機の送風装置において、 上記ベルマウス(１)の吸込側端(１a)の外周に接するよ
うに、表面が多孔質で略円形断面を有する環状部分(２)
を設けたことを特徴とする空気調和機の送風装置。1. Propeller fan having bellmouth (1)
In the air conditioner blower using (16), an annular portion (2) having a porous surface and a substantially circular cross-section so as to be in contact with the outer periphery of the suction side end (1a) of the bell mouth (1).
A blower for an air conditioner, comprising:
は別体で、上記ベルマウス(１)の吸込側端(１a)の外周
に固定された円環(２)である請求項１の空気調和機の送
風装置。2. The annular portion (2) is a ring (2) separate from the bell mouth and fixed to the outer periphery of the suction side end (1a) of the bell mouth (1). Blower for air conditioner of 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991019312U JP2533977Y2 (en) | 1991-03-28 | 1991-03-28 | Air conditioner blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991019312U JP2533977Y2 (en) | 1991-03-28 | 1991-03-28 | Air conditioner blower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04116700U JPH04116700U (en) | 1992-10-19 |
| JP2533977Y2 true JP2533977Y2 (en) | 1997-04-30 |
Family
ID=31905617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991019312U Expired - Lifetime JP2533977Y2 (en) | 1991-03-28 | 1991-03-28 | Air conditioner blower |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2533977Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0777200A (en) * | 1993-09-07 | 1995-03-20 | Mitsubishi Heavy Ind Ltd | Blower |
| KR20040016719A (en) * | 2002-08-19 | 2004-02-25 | 엘지전자 주식회사 | Bell mouse structure of centrifugal fan |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6198655A (en) * | 1984-10-22 | 1986-05-16 | Yamaha Motor Co Ltd | Seatbelt fixing structure for small car |
| JPS63243495A (en) * | 1987-03-30 | 1988-10-11 | Hitachi Ltd | Blower device for air conditioner |
| JP2642748B2 (en) * | 1989-08-11 | 1997-08-20 | 三菱電機株式会社 | Combustion air blower |
-
1991
- 1991-03-28 JP JP1991019312U patent/JP2533977Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04116700U (en) | 1992-10-19 |
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