JP2538909Y2 - Vibration control device for once-through blower - Google Patents
Vibration control device for once-through blowerInfo
- Publication number
- JP2538909Y2 JP2538909Y2 JP1991060813U JP6081391U JP2538909Y2 JP 2538909 Y2 JP2538909 Y2 JP 2538909Y2 JP 1991060813 U JP1991060813 U JP 1991060813U JP 6081391 U JP6081391 U JP 6081391U JP 2538909 Y2 JP2538909 Y2 JP 2538909Y2
- Authority
- JP
- Japan
- Prior art keywords
- once
- blower
- damper
- motor
- vibration
- 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)
- Vibration Prevention Devices (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、空調機等に用られる貫
流送風機の曲げ振動を低減するようにした貫流送風機の
制振装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration control device for a once-through fan which reduces bending vibration of a once-through fan used for an air conditioner or the like.
【０００２】[0002]
【従来の技術】従来の貫流送風機の支持方法は、貫流送
風機の一方の端部をモータで、他方の端部を軸受部で支
持する方法がとられ、通常はモータで発生する電磁振動
がモータの支持部へ伝播するのを防止するため、モータ
は防振支持される。2. Description of the Related Art A conventional once-through blower is supported by a method in which one end of the once-through blower is supported by a motor and the other end of the once-through blower is supported by a bearing. The motor is anti-vibration supported to prevent transmission to the support.
【０００３】この場合、貫流送風機の回転数をあげてい
くと、同貫流送風機は中央が振れ回る構造共振が発生す
る。そのため、通常使用可能な回転範囲は送風機の曲げ
振動が生じない低回転域に限定される。[0003] In this case, as the rotational speed of the once-through blower is increased, a structural resonance occurs in which the center of the once-through blower swings. Therefore, the normally usable rotation range is limited to a low rotation region where bending vibration of the blower does not occur.
【０００４】広範囲にわたって貫流送風機を使用する場
合は、前述の共振を防ぐ必要があり、その一つの方法と
して、図３に示すように、一端部をモータ２で支持した
貫流送風機１の他端部の軸受３をバネ４ａとダンパ５ａ
からなるダイナミックダンパによって支持し、共振周波
数における貫流送風機１の振動をこの動吸振器によって
抑える方法が提案されている（実願平２−１２４１９２
号）。しかし、この方法では、ダイナミックダンパを新
たに付加しているためにコストがアップする問題が残
る。When the once-through blower is used over a wide range, it is necessary to prevent the above-mentioned resonance. As one method, as shown in FIG. 3, one end of the once-through blower 1 having one end supported by the motor 2 is used. Spring 3a and damper 5a
A method has been proposed in which the dynamic damper is supported to suppress the vibration of the once-through blower 1 at the resonance frequency by the dynamic vibration absorber (Japanese Utility Model Application No. 2-124192).
issue). However, this method still has a problem that the cost is increased because a dynamic damper is newly added.
【０００５】[0005]
【考案が解決しようとする課題】前記のように、従来の
貫流送風機では、構造共振を避けるために低回転域の運
転を余儀なくされ、また、これを回避するために軸受を
ダイナミックダンパによって支持しようとする場合に
は、コストアップが避けられなかった。As described above, in the conventional once-through blower, operation in a low rotation range is inevitable to avoid structural resonance, and a bearing is required to avoid this.
When trying to support with a dynamic damper , an increase in cost was inevitable.
【０００６】本考案は、前述した貫流送風機における構
造共振、すなわち、貫流送風機の曲げ振動をコストアッ
プを伴うことなく抑えることにより、貫流送風機の使用
可能な範囲を大巾に拡大することができる貫流送風機の
制振装置を提供しようとするものである。According to the present invention, it is possible to greatly expand the usable range of the once-through fan by suppressing the structural resonance of the once-through fan, that is, the bending vibration of the once-through fan without increasing the cost. An object of the present invention is to provide a vibration control device for a blower.
【０００７】[0007]
【課題を解決するための手段】本考案の貫流送風機の制
振装置は、貫流送風機を駆動するモータをバネとダンパ
で支持し、その防振系の固有振動数を軸系の固有振動数
に一致させ、モータをダイナミックダンパの構成要素と
した。 According to the present invention, a vibration control device for a once-through fan has a motor for driving the once-through fan supported by a spring and a damper, and the natural frequency of the vibration isolating system is changed to the natural frequency of the shaft system.
And the motor as a component of the dynamic damper.
did.
【０００８】[0008]
【作用】本考案は、モータをバネとダンパで支持し、そ
の防振系の固有振動数を軸系の固有振動数に一致させ、
モータをダイナミックダンパの構成要素としているの
で、貫流送風機を曲げ振動が発生する回転数で運転して
も、モータとこれを支持するバネとダンパによって構成
されるダイナミックダンパによって貫流送風機の振動を
効果的に制振することができる。 SUMMARY OF Invention The present invention supports the motor by a spring and a damper, its
The natural frequency of the anti-vibration system to match the natural frequency of the shaft system,
Because there motor as a component of a dynamic damper, be operated at a rotational speed vibrating bending once-through blower is generated, composed of a spring and a damper for supporting the motor and this
The vibration of the once-through blower by the dynamic damper to be
Effective damping can be achieved .
【０００９】また、本考案では、従来防振支持されてい
たモータを前記のようにバネとダンパによって支持する
ようにしたにすぎないために、新たに軸受にダイナミッ
クダンパを付加した図３に示す装置のようにコストアッ
プを伴うこともない。[0009] In the present invention, dynamic motor that are conventionally vibration-damping support for only the so supported by the spring and damper as, newly bearings
There is no cost increase as in the apparatus shown in FIG. 3 to which a damper is added.
【００１０】[0010]
【実施例】本考案の一実施例を、図１に示す。１は、空
調機の貫流送風機で、その一方の端部は軸受３で支持さ
れている。また、他方の端部はモータ２に接続されてお
り、そのモータ２は、バネ４とダンパ５で支持されてい
る。FIG. 1 shows an embodiment of the present invention. 1 is a once-through blower of an air conditioner, one end of which is supported by a bearing 3. The other end is connected to the motor 2, and the motor 2 is supported by a spring 4 and a damper 5.
【００１１】貫流送風機１の曲げ振動の固有角振動数ω
1 とその等価質量ｍ1 及び等価質量ｍ1 の位置を示す定
数αは計算等により求められるので、前記バネ４の定数
ｋ、前記ダンパ５の定数ｃを下記値に設定することによ
り、その防振系の固有振動数を軸系の固有振動数に一致
させ、バネとダンパと共にモータ２を構成要素として送
風機１を制振するためのダイナミックダンパを構成する
ことができる。The natural angular frequency ω of the bending vibration of the once-through blower 1
1 and its equivalent mass m 1 and the constant α indicating the position of the equivalent mass m 1 can be obtained by calculation or the like. Therefore, by setting the constant k of the spring 4 and the constant c of the damper 5 to the following values, their prevention can be prevented. The natural frequency of the vibration system matches the natural frequency of the shaft system
Thus, a dynamic damper for damping the blower 1 using the motor 2 as a component together with the spring and the damper can be configured .
【００１２】[0012]
【数１】 (Equation 1)
【００１３】 バネ４とダンパ５の定数を以上の値に設定することによ
り、モータ２、バネ４及びダンパ５は、ダイナミックダ
ンパとして最適な機能を有することとなり、送風機１の
曲げ振動の抑制が可能となり、図２に示すような貫流送
風機の振動特性を得ることができる。なお、図２には、
比較のために、貫流送風機の両端を軸受とモータで支持
した場合を、従来のモータ支持として点線で示してい
る。[0013] By setting a value above the constant of the spring 4 and a damper 5, the motor 2, spring 4 and a damper 5, the dynamic da
As a result, the bending function of the blower 1 can be suppressed, and the vibration characteristics of the once-through blower as shown in FIG. 2 can be obtained. In FIG. 2,
For comparison, a case where both ends of the once-through blower are supported by bearings and a motor is shown by a dotted line as a conventional motor support.
【００１４】また、本実施例と同じ制振効果を持たせる
ために、図３に示される構成も考えられるが、この場合
には前記のように軸受にバネとダンパからなるダイナミ
ックダンパを新たに付加する必要がある。これに反して
本実施例では、従来防振支持されていたモータ２を前記
のようなバネ４とダンパ５によって支持し、モータ２を
バネ４とダンパ５と共にダイナミックダンパの構成要素
とするようにしたものであるので、単純で低コストな構
成とすることができる。In order to provide the same vibration damping effect as that of the present embodiment, a configuration shown in FIG. 3 is also conceivable. In this case, however, as described above, the bearing has a dynamic
It is necessary to add a new damper . In this embodiment on the contrary, the motor 2 that has been conventionally vibration-damping support is supported by a spring 4 and a damper 5 as described above, the motor 2
Components of the dynamic damper together with the spring 4 and the damper 5
Since is obtained as a can be a simple and low-cost configuration.
【００１５】[0015]
【考案の効果】以上、具体的に説明したように、本考案
では、貫流送風機を駆動するモータをバネとダンパで支
持し、その防振系の固有振動数を軸系の固有振動数に一
致させ、モータをダイナミックダンパの構成要素として
いるので、極めて低コストで単純な構造のダイナミック
ダンパを構成することができ、それにより、貫流送風機
の曲げ振動の発生をおさえることができる。[Effects of the Invention] As described above, in the present invention, the motor for driving the once-through blower is supported by a spring and a damper, and the natural frequency of the vibration isolating system is reduced to the natural frequency of the shaft system.
The motor as a component of the dynamic damper
Because there, a simple structure at a very low cost dynamic
A damper can be configured, whereby the occurrence of bending vibration of the once-through blower can be suppressed.
【００１６】また、その結果、その振動による貫流送風
機の破損や、その振動伝播による空調機等の騒音が解消
されるため、広範囲の回転数にわたり貫流送風機を使用
することが可能となる。Further, as a result, breakage of the once-through blower due to the vibration and noise of an air conditioner or the like due to the propagation of the vibration are eliminated, so that the once-through blower can be used over a wide range of rotation speed.
【図１】本考案の一実施例の構成図である。FIG. 1 is a configuration diagram of an embodiment of the present invention.
【図２】前記実施例を適用した場合の貫流送風機の振動
特性図である。FIG. 2 is a vibration characteristic diagram of a once-through blower when the embodiment is applied.
【図３】軸受を動吸振器で支持した従来の貫流送風機の
構成図である。FIG. 3 is a configuration diagram of a conventional once-through blower in which a bearing is supported by a dynamic vibration absorber.
１ 貫流送風機 ２ モータ ３ 軸受 ４ バネ ５ ダンパ DESCRIPTION OF SYMBOLS 1 Once-through blower 2 Motor 3 Bearing 4 Spring 5 Damper
───────────────────────────────────────────────────── フロントページの続き (72)考案者 観音 立三 名古屋市中村区岩塚町字高道１番地 三 菱重工業株式会社名古屋研究所内 (56)参考文献 特開 昭58−196345（ＪＰ，Ａ) 実開 平３−62250（ＪＰ，Ｕ) 実開 平２−118189（ＪＰ，Ｕ) ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tatezo Kannon 1 Takamichi, Iwazuka-cho, Nakamura-ku, Nagoya-shi Nagoya Laboratory, Mitsubishi Heavy Industries, Ltd. (56) References JP-A-58-196345 (JP, A) Japanese Utility Model Hei 6-62250 (JP, U) Japanese Utility Model Hei 2-118189 (JP, U)
Claims (1)
ンパで支持し、その防振系の固有振動数を軸系の固有振
動数に一致させ、モータをダイナミックダンパの構成を
要素としたことを特徴とする貫流送風機の制振装置。A motor for driving a once-through blower is supported by a spring and a damper, and the natural frequency of the vibration isolation system is adjusted by the natural vibration of the shaft system.
Motor, and configure the motor as a dynamic damper.
A vibration control device for a once- through blower, characterized in that it is an element .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991060813U JP2538909Y2 (en) | 1991-08-01 | 1991-08-01 | Vibration control device for once-through blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991060813U JP2538909Y2 (en) | 1991-08-01 | 1991-08-01 | Vibration control device for once-through blower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0514594U JPH0514594U (en) | 1993-02-26 |
| JP2538909Y2 true JP2538909Y2 (en) | 1997-06-18 |
Family
ID=13153168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991060813U Expired - Lifetime JP2538909Y2 (en) | 1991-08-01 | 1991-08-01 | Vibration control device for once-through blower |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2538909Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5520507A (en) * | 1994-05-06 | 1996-05-28 | Ingersoll-Rand Company | Method and apparatus to achieve passive damping of flow disturbances in a centrifugal compressor to control compressor surge |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58196345A (en) * | 1982-05-12 | 1983-11-15 | Mitsubishi Heavy Ind Ltd | Rotor supporting apparatus |
| JPH02118189U (en) * | 1988-11-09 | 1990-09-21 | ||
| JP3062250U (en) * | 1998-12-03 | 1999-09-28 | 正巳 内山 | Decomposition device for any substance by ion |
-
1991
- 1991-08-01 JP JP1991060813U patent/JP2538909Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0514594U (en) | 1993-02-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19970121 |