JPS631479B2 - - Google Patents
Info
- Publication number
- JPS631479B2 JPS631479B2 JP12895379A JP12895379A JPS631479B2 JP S631479 B2 JPS631479 B2 JP S631479B2 JP 12895379 A JP12895379 A JP 12895379A JP 12895379 A JP12895379 A JP 12895379A JP S631479 B2 JPS631479 B2 JP S631479B2
- Authority
- JP
- Japan
- Prior art keywords
- plate
- base plate
- grooved
- joined
- bent
- 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
Links
- 238000005192 partition Methods 0.000 claims description 27
- 238000003466 welding Methods 0.000 claims description 15
- 230000003584 silencer Effects 0.000 claims description 8
- 238000013016 damping Methods 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000000155 melt Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 230000030279 gene silencing Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Description
【発明の詳細な説明】
本発明は渦流送風機の吸込口及び吐出口に設け
る消音装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a silencing device provided at the suction port and discharge port of a vortex blower.
渦流送風機は１つのロータで高い風圧を得られ
るので最近多方面で用いられている。しかし、こ
れの欠点は非常に耳ざわりな大きい騒音を発生す
ることである。そのため従来から渦流送風機の吸
込口と吐出口とに吸音型、膨脹型あるいはこれ等
の両方の原理を兼ね備えた型の消音装置を取りつ
けて騒音を低下させることが行われている。 Eddy current blowers are recently used in many fields because they can obtain high wind pressure with a single rotor. However, the disadvantage of this is that it produces a loud noise that is very annoying. For this reason, noise reduction has conventionally been carried out by attaching a sound absorbing type, an expansion type, or a type that combines the principles of both types to the suction and discharge ports of a vortex blower.
しかし従来提案された消音装置の多くは鋳物製
か、鋼管あるいはアルミニウム管を適当な長さに
切断して構成したものであつた。 However, most of the silencers that have been proposed so far have been made of cast metal or made of steel or aluminum pipes cut into appropriate lengths.
これ等はいずれも高価であり、且つアルミニウ
ム管で作つたものを除いては相当に重くなる欠点
が有つた。 All of these were expensive and, except for those made of aluminum tubes, had the drawback of being considerably heavy.
そこで本発明者等は、この消音装置の全部又は
大部分を板金技術に依つて作ることを考え、研究
を進めた。その結果板金作業に依つて消音装置を
作る場合に最も工夫の要するところは、高い圧力
の気体をどのようにしてシールするかであること
が分つた。 Therefore, the inventors of the present invention have considered making all or most of this silencer using sheet metal technology, and have proceeded with research. As a result, it was found that when making a silencer using sheet metal work, the most ingenious part was how to seal the high-pressure gas.
板金を厚くし接合部全体を連続して溶接すれば
問題は解決するが、それでは全体が重くなつてし
まい、そのうえ値段も高くなつて、消音装置を板
金技術に依つて作る意味がうすれてしまう。 The problem could be solved by making the sheet metal thicker and welding the entire joint continuously, but this would make the whole thing heavier and more expensive, which would negate the point of making a silencer using sheet metal technology.
そこで本発明の目的は薄い金属板を使つて、充
分圧力シールを行うことのできる安価な渦流送風
機の消音装置を構成することにある。 SUMMARY OF THE INVENTION Therefore, an object of the present invention is to construct an inexpensive sound muffling device for a vortex blower that can provide sufficient pressure sealing using a thin metal plate.
すなわち本発明では消音装置をベース板と、溝
状板と仕切板と絞り板と透孔とで構成する。 That is, in the present invention, the muffling device is composed of a base plate, a grooved plate, a partition plate, a diaphragm plate, and a through hole.
このうちベース板は、必要な場合には剛性を高
めるために押し出しに依つて突条を設けることが
できるが、基本的には平らなもので構成する。 Of these, the base plate can be provided with protrusions by extrusion to increase rigidity if necessary, but it is basically constructed of a flat plate.
溝状板は両端に外向辺を有しており、中間には
溝状部を有している。この溝状部とベース板とで
大筒を形成するように溝状部の底をベース板から
離し、両外向辺をベース板に接合する。 The grooved plate has outward facing sides at both ends and a grooved portion in the middle. The bottom of the groove is separated from the base plate so that the groove and the base plate form a large cylinder, and both outward sides are joined to the base plate.
仕切板は溝状板とベース板とに接合し、大筒を
２つの小筒に仕切る。２つの小筒のうちの一方は
渦流送風機の吸込側の消音室となり、他方は吐出
側の消音室となる。 The partition plate is joined to the grooved plate and the base plate, and partitions the large tube into two small tubes. One of the two small cylinders serves as a silencing chamber on the suction side of the vortex blower, and the other serves as a silencing chamber on the discharge side.
絞り板は小筒の開口部に位置し小筒の開口部を
絞つて渦流送風機の吸込口、吐出口及び吸込管、
吐出管への接続を容易にするためのフランジを形
成する。この消音装置は多くの場合渦流送風機の
吸込口、吐出口と吸込管、吐出管との間に設けら
れる。そして小筒は膨脹型消音器として使用され
る場合でも、吸音材を内蔵させて吸音型消音器と
して使用する場合でも、小筒の伸びる方向に対し
て直角方向に切つた断面積は渦流送風機の吸込
口、吐出口および吸込管、吐出管の断面積よりも
大きい。従つて口径を合せるために絞り板を設け
るのである。しかし渦流送風機の吸込口、吐出口
に連なる部分は渦流送風機のケーシングに小筒の
端部を近づけることにより絞り板を省略すること
ができる。 The diaphragm plate is located at the opening of the small cylinder, and narrows the opening of the small cylinder to connect the suction port, the discharge port, and the suction pipe of the vortex blower.
Form a flange to facilitate connection to the discharge pipe. This muffling device is often installed between the suction and discharge ports of the vortex blower and the suction and discharge pipes. Regardless of whether the small tube is used as an expansion type silencer or a sound absorbing type silencer with built-in sound absorbing material, the cross-sectional area cut perpendicular to the direction in which the small tube extends is the same as that of a vortex blower. It is larger than the cross-sectional area of the suction port, discharge port, suction pipe, and discharge pipe. Therefore, a diaphragm plate is provided to match the diameter. However, the aperture plate can be omitted in the portion connected to the suction port and the discharge port of the swirl blower by bringing the end of the small cylinder close to the casing of the swirl blower.
透孔は外向辺とベース板とに通して設ける。こ
の透孔は据付ボルトを通すために用いる。この据
付ボルトは消音装置ばかりでなく、多くの場合、
渦流送風機を据えつけるために用いられる。つま
り多くの場合は消音装置の上に渦流送風機が固定
されているのである。 A through hole is provided through the outward side and the base plate. This hole is used to pass the mounting bolt. These mounting bolts are used not only for silencers, but also in many cases.
Used for installing vortex blowers. This means that in most cases a vortex blower is fixed on top of the silencer.
以上のように構成することに依り、ベース板と
外向辺との接合は溶接や接着に依る接合だけでな
く、透孔を通した据付ボルトをしめつけることに
依つて強固に行われる。極論すれば外向辺に対す
るベース板の接合は透孔に据付ボルトを通し、こ
れをしめつけるまでの間溝状板とベース板とが別
別にならないようにしておけば良いので両者の接
合は信頼性があまり問題にならない。また圧力シ
ールは外向辺の幅を大きくとつておき、これとベ
ース板との対向部の幅を広くとつておけば小筒の
中の風圧が高くても充分シールすることができ
る。 With the above configuration, the base plate and the outwardly facing side can be firmly joined not only by welding or adhesive, but also by tightening the installation bolts passed through the holes. In extreme terms, to join the base plate to the outward facing side, all you have to do is pass the installation bolt through the hole and keep the grooved plate and base plate in place until they are tightened, so the connection between the two is reliable. It doesn't really matter. Furthermore, if the pressure seal has a large width on the outward side and a wide width on the opposing side with the base plate, sufficient sealing can be achieved even if the wind pressure inside the small cylinder is high.
更にベース板と溝状板とは中央部で仕切板を介
して連結されるので板厚がそれほど厚くなくても
充分な強度を持つことができる。 Furthermore, since the base plate and the grooved plate are connected through the partition plate at the center, sufficient strength can be achieved even if the plate thickness is not very thick.
以上のように本発明に依れば所期の目的を達成
することができる。 As described above, according to the present invention, the intended purpose can be achieved.
仕切板の両側部は、これを接合するベース板あ
るいは溝状板の位置と並行を成すように折り曲
げ、この両端折曲辺をベース板又は溝状板にスポ
ツト溶接したものは製作が容易である。 It is easy to manufacture by bending both sides of the partition plate so that they are parallel to the position of the base plate or grooved plate to which they are joined, and by spot welding the bent sides at both ends to the base plate or grooved plate. .
このとき、この折曲辺を異なる方向へ折り曲げ
ると次の２つの点で有利である。その１つは膨脹
型吸音器として使用する場合には、小筒の中の、
吸込口又は吐出口に連なる部分から４分のλの長
さの位置の孔のあいた中間片を入れるが、２つの
小室に入れる中間片を全く同じく構成することが
できる点である。なおλは騒音の波長である。ま
た他の１つは仕切板をベースに溶接するための作
業が容易になることである。なぜならば折曲辺が
同一方向を向いていると、ベース板に接合する折
曲辺の上方は他の折曲辺で覆われることになる。
従つて溶接用の電極が、両折曲辺間の距離よりも
長いと電極はベース板と、これと接合する折曲辺
との真上から電極をあてることができなくなる。
この点折曲辺が異なる方を向いていればベース板
と折曲辺とを接合するとき、この折曲辺の上方は
開いているから電極を当てやすくなるのである。 At this time, bending the bent sides in different directions is advantageous in the following two points. One of them is when used as an inflatable sound absorber, inside the small cylinder,
An intermediate piece with a hole at a position a quarter of the length λ from the part connected to the suction port or the discharge port is inserted, but the intermediate piece inserted into the two small chambers can have exactly the same configuration. Note that λ is the wavelength of noise. Another reason is that the work for welding the partition plate to the base becomes easier. This is because if the bent sides face in the same direction, the upper part of the bent side that joins the base plate will be covered by another bent side.
Therefore, if the welding electrode is longer than the distance between the two bent sides, it will not be possible to apply the electrode directly above the base plate and the bent side to be joined to the base plate.
If the point-bent sides face in different directions, when the base plate and the bent sides are joined together, the upper part of the bent sides is open, making it easier to apply the electrode.
ところで２つの小筒を絞る絞り板を一体に構成
すると、仕切板と絞り板との間の圧力シールを施
すのがやつかいである。そこで小筒の開口部を個
個に絞る絞り板を設け、この絞り板を仕切板、ベ
ース及び溝状板に連続した溶接に依つて取りつけ
れば仕切板と絞り板との圧力シールも完全に行う
ことができる。この場合は隅肉溶接が適当であ
る。 By the way, if the aperture plate that squeezes the two small cylinders is constructed as one piece, it is difficult to apply a pressure seal between the partition plate and the aperture plate. Therefore, by providing a diaphragm plate that narrows the opening of the small cylinder individually and attaching this diaphragm plate to the partition plate, base, and grooved plate by continuous welding, the pressure seal between the partition plate and the diaphragm plate can be completely achieved. It can be carried out. In this case, fillet welding is appropriate.
ベース板と外向辺、仕切板と溝状板、仕切板と
ベース板とをスポツト溶接する場合に、夫々両者
の間に弾性体を挾んでおけば圧力シールは更に良
くなる。 When spot welding the base plate and the outward side, the partition plate and the grooved plate, or the partition plate and the base plate, if an elastic body is interposed between the two, the pressure seal will be further improved.
そして特にベース板と外向辺とをスポツト溶接
し隣接するスポツト溶接部間に透孔を設けておけ
ばベース板と外向辺との間には、ここにはさんだ
弾性体に依つてバネ作用があるのでしめつけた据
付ボルトが緩みにくくなる長所も生じる。 In particular, if the base plate and the outward side are spot welded and a through hole is provided between the adjacent spot welds, there will be a spring action between the base plate and the outward side due to the elastic body sandwiched here. This also has the advantage that the tightened installation bolts are less likely to loosen.
ところでスポツト溶接する前にベース板と外向
辺、仕切板と溝状板、仕切板とベース板との間に
導電性を有する熱溶融性の弾性体を挾んでおくと
好適である。この弾性体は導電性を有しているの
でスポツト溶接用電極を当てるとジユール熱で溶
け、スポツト溶接部から離れたところは、そのま
まの状態で残り、シール材として働く。また電極
をあてたところは弾性体は溶けてしまうので溶接
は成される。このような弾性体としては例えばゴ
ム鉄粉を混入したものが考えられる。 By the way, before spot welding, it is preferable to sandwich an electrically conductive heat-melting elastic body between the base plate and the outward side, between the partition plate and the groove plate, and between the partition plate and the base plate. Since this elastic body has electrical conductivity, when a spot welding electrode is applied to it, it melts due to the heat of the dure, and the part away from the spot weld remains in that state and acts as a sealing material. Also, the elastic material melts where the electrode is applied, so welding is achieved. As such an elastic body, for example, one mixed with rubber iron powder can be considered.
以下図に示す本発明の実施例について説明す
る。１はベース板、２は溝状板、３は仕切板、
４，５，６，７は絞り板、８は透孔である。 Embodiments of the present invention shown in the figures will be described below. 1 is a base plate, 2 is a grooved plate, 3 is a partition plate,
4, 5, 6, and 7 are aperture plates, and 8 is a through hole.
ベース板１は平板状を成している。溝状板２は
両端に外向部９，１０を有しており、中間には溝
状部１１を有している。溝状部１１の底部はベー
ス板１から離れており、外向部９，１０はベース
板１にスポツト溶接してある。ベース板１に対す
る外向部９，１０の溶接部は１２で示してある。
透孔８は隣接する溶接部１２の中間位置にある。
図では誇張して示してあるがベース板１と外向部
９，１０との間には弾性体１３が挾んである。こ
の弾性体１３はスポツト溶接部１２の位置では溶
けてベース板１と外向部９，１０との間から消失
している、仕切板３はベース板１と溝状板２とで
形成した大筒P0を２つの小筒P1P2に仕切る。仕
切板３は両側部に折曲辺１４，１５を有しており
両折曲辺１４と１５とは夫々異なる方向を向いて
いる。折曲辺１４はベース板１にスポツト溶接し
てあり、折曲辺１５は溝状板２にスポツト溶接し
てある。スポツト溶接部は１６で示す。折曲辺１
４とベース１との間、折曲辺１５と溝状板２との
間にも弾性体１３が挾んであり、この弾性体１３
はスポツト溶接部１６の位置では溶けて消失して
いる。 The base plate 1 has a flat plate shape. The grooved plate 2 has outward facing portions 9 and 10 at both ends, and a grooved portion 11 in the middle. The bottom of the groove 11 is remote from the base plate 1, and the outwardly directed parts 9, 10 are spot welded to the base plate 1. The welds of the outwardly facing parts 9, 10 to the base plate 1 are indicated at 12.
The through hole 8 is located at an intermediate position between adjacent welds 12.
Although shown exaggerated in the figure, an elastic body 13 is sandwiched between the base plate 1 and the outwardly facing parts 9 and 10. The elastic body 13 melts at the spot weld 12 and disappears from between the base plate 1 and the outward parts 9 and 10. The partition plate 3 is a large cylinder P formed by the base plate 1 and the grooved plate 2. 0 into two small tubes P 1 P 2 . The partition plate 3 has bent sides 14 and 15 on both sides, and both bent sides 14 and 15 face different directions. The bent side 14 is spot welded to the base plate 1, and the bent side 15 is spot welded to the grooved plate 2. The spot weld is indicated by 16. Bending side 1
4 and the base 1 and between the bent side 15 and the grooved plate 2.
melts and disappears at the spot weld 16.
絞り板４，５，６，７は中央に孔１７，１８，
１９，２０を有している。夫々の絞り板４，５，
６，７はベース板１、溝状板２、仕切板３に連続
溶接してある。溶接部を２１で示す。 The aperture plates 4, 5, 6, 7 have holes 17, 18,
It has 19 and 20. Respective aperture plates 4, 5,
6 and 7 are continuously welded to the base plate 1, the grooved plate 2, and the partition plate 3. The welded portion is indicated by 21.
２２，２３は中間片であり、中央に孔１７，１
８，１９，２０とほぼ同じ大きさの孔２４，２５
を有している。この中間片２２，２３は絞り板
６，７の位置から騒音波長の４分の１離れた位置
に仕切板３及びベース板１に溶接することにより
固定される。中間片２２と２３とは全く同じ形状
を成しており、一方は他方に対して180度回転し
て使用する。溶接部は省略してある。 22 and 23 are intermediate pieces, with holes 17 and 1 in the center.
Holes 24, 25 of approximately the same size as 8, 19, 20
have. The intermediate pieces 22 and 23 are fixed by welding to the partition plate 3 and the base plate 1 at positions spaced apart from the positions of the aperture plates 6 and 7 by a quarter of the noise wavelength. The intermediate pieces 22 and 23 have exactly the same shape, and one is used by rotating 180 degrees with respect to the other. Welded parts are omitted.
以上のようなものを構成するには、まず折曲辺
１４に弾性体１３を貼り折曲辺１４を所定の位置
に位置決めして折曲辺１４をベース板１にスポツ
ト溶接する。 To construct the above-described structure, first, the elastic body 13 is attached to the bent side 14, the bent side 14 is positioned at a predetermined position, and the bent side 14 is spot welded to the base plate 1.
次にベース板１、仕切板３に中間片２２，２３
を溶接する。 Next, the intermediate pieces 22 and 23 are attached to the base plate 1 and the partition plate 3.
to weld.
次に外向辺９，１０に弾性体１３を貼り、外向
辺９，１０をベース板１に対向させる。そして１
２の位置で夫々スポツト溶接を行う。 Next, elastic bodies 13 are attached to the outward sides 9 and 10, and the outward sides 9 and 10 are made to face the base plate 1. and 1
Perform spot welding at each position.
最後に絞り板４，５，６，７を１枚づつ仕切板
３、ベース板１、溝状板２に連続溶接する。 Finally, the aperture plates 4, 5, 6, and 7 are continuously welded one by one to the partition plate 3, the base plate 1, and the grooved plate 2.
なお孔１９は図示しない渦流送風機の吸込口に
接続し、２０は吐出口に接続する。更に孔１７は
図示しない吸込管に接続し、１８は吐出管に接続
する。 Note that the hole 19 is connected to the suction port of a vortex blower (not shown), and the hole 20 is connected to the discharge port. Further, the hole 17 is connected to a suction pipe (not shown), and the hole 18 is connected to a discharge pipe.
中間片は膨脹型あるいは膨脹型と吸音型との原
理を兼ね備えたものの場合は必要であるが、単な
る吸音型の場合は不要であり、この場合は中間孔
を有する吸音材を小筒P1，P2の中へ入れる。 The intermediate piece is necessary in the case of an expansion type or one that combines the principles of an expansion type and a sound absorption type, but is not necessary in the case of a simple sound absorption type. In this case, the sound absorption material with the intermediate hole is used as a small tube P Put it inside P 2 .
第１図は本発明消音装置の実施例を示す正面
図、第２図は右側面図、第３図は平面図、第４図
は第１図を４−４線に沿つて切断して示す図、第
５図は第３図を５−５線に沿つて切断して示す図
である。
１はベース板、２は溝状板、３は仕切板、４，
５，６，７は絞り板、８は透孔、９，１０は外向
部、１１は溝状部、１３は弾性体、１４，１５は
折曲辺、２１は溶接部、P0は大筒、P1，P2は小
筒である。
Fig. 1 is a front view showing an embodiment of the silencer of the present invention, Fig. 2 is a right side view, Fig. 3 is a plan view, and Fig. 4 is a cross-section of Fig. 1 along line 4-4. 5 is a diagram showing FIG. 3 cut along line 5--5. 1 is a base plate, 2 is a grooved plate, 3 is a partition plate, 4,
5, 6, 7 are aperture plates, 8 is a through hole, 9, 10 are outward parts, 11 is a grooved part, 13 is an elastic body, 14, 15 are bent sides, 21 is a welded part, P 0 is a large cylinder, P 1 and P 2 are small cylinders.
Claims (1)
接合し中間の溝状部を前記ベース板から離して設
けた溝状板と、該溝状板と前記ベース板とに接合
し前記ベース板と前記溝状板とで形成した大筒を
２つの小筒に仕切ると共に両端部にこれと接合す
る前記ベース板あるいは前記溝状板と平行を成す
折曲辺を有する仕切板と、前記小筒の開口部に位
置し前記小筒の開口部を絞る絞り板と、前記外向
辺と前記ベース板とに通して設けた透孔とからな
り前記仕切板の折曲辺は夫々異なる方向に折り曲
げてあり前記ベース板又は前記溝状板にスポツト
溶接してあることを特徴とする渦流送風機の消音
装置。 ２ 前記絞り板は前記小筒の開口部に個々に、前
記仕切板、ベース板及び溝状板に、連続した溶接
に依つて取りつけてあることを特徴とする特許請
求の範囲第１項記載の渦流送風機の消音装置。 ３ ベース板と、両端の外向辺を前記ベース板に
スポツト溶接により接合し、中間の溝状部を前記
ベース板から離して設けた溝状板と、該溝状板と
前記ベース板とに接合し、前記ベース板と前記溝
状板とで形成した大筒を２つの小筒に仕切ると共
に両端部にこれと接合する前記ベース板あるいは
前記溝状板と平行をなす折曲辺を有する仕切板
と、前記小筒の開口部に位置し、前記小筒の開口
部を絞る絞り板と、前記外向辺と前記ベース板と
に通して設けた透孔と、前記ベース板と前記外向
辺との間に設けた弾性体とより成る渦流送風機の
消音装置。 ４ 前記外向辺は前記ベース板にスポツト溶接し
てあり、前記透孔は隣接するスポツト溶接部の間
に設けてあることを特徴とする特許請求の範囲第
３項記載の渦流送風機の消音装置。[Scope of Claims] 1. A base plate, a grooved plate whose outward sides at both ends are joined to the base plate and whose intermediate grooved part is separated from the base plate, and the grooved plate and the base plate. a partition plate that is joined to the base plate and the grooved plate and partitions the large cylinder formed by the base plate and the grooved plate into two small cylinders, and has bent sides at both ends that are parallel to the base plate or the grooved plate that is joined to the large cylinder; , an aperture plate located at the opening of the small cylinder and narrowing the opening of the small cylinder, and a through hole provided through the outward side and the base plate, and each bent side of the partition plate is 1. A muffler for a vortex blower, characterized in that the muffling device is bent in different directions and spot welded to the base plate or the grooved plate. 2. The aperture plate according to claim 1, wherein the aperture plate is individually attached to the opening of the small cylinder and to the partition plate, base plate, and groove plate by continuous welding. Silencer for vortex blowers. 3. A base plate, a grooved plate whose outward sides at both ends are joined to the base plate by spot welding, and an intermediate grooved part provided apart from the base plate, and the grooved plate and the base plate are joined. and a partition plate that partitions the large cylinder formed by the base plate and the grooved plate into two small cylinders, and has bent sides parallel to the base plate or the grooved plate at both ends to be joined to the small cylinder. , an aperture plate located at the opening of the small cylinder and narrowing the opening of the small cylinder, a through hole provided through the outward side and the base plate, and between the base plate and the outward side. A noise muffling device for a vortex blower consisting of an elastic body provided in the 4. The noise damping device for a swirl blower according to claim 3, wherein the outward side is spot welded to the base plate, and the through hole is provided between adjacent spot welds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12895379A JPS5652600A (en) | 1979-10-08 | 1979-10-08 | Silencer for vortex flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12895379A JPS5652600A (en) | 1979-10-08 | 1979-10-08 | Silencer for vortex flow fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5652600A JPS5652600A (en) | 1981-05-11 |
| JPS631479B2 true JPS631479B2 (en) | 1988-01-12 |
Family
ID=14997484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12895379A Granted JPS5652600A (en) | 1979-10-08 | 1979-10-08 | Silencer for vortex flow fan |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5652600A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH026610A (en) * | 1988-03-08 | 1990-01-10 | Basf Corp | Yarn having antibacterial activity |
-
1979
- 1979-10-08 JP JP12895379A patent/JPS5652600A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH026610A (en) * | 1988-03-08 | 1990-01-10 | Basf Corp | Yarn having antibacterial activity |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5652600A (en) | 1981-05-11 |
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