JPH0742699A - Muffler device for blower - Google Patents
Muffler device for blowerInfo
- Publication number
- JPH0742699A JPH0742699A JP8899994A JP8899994A JPH0742699A JP H0742699 A JPH0742699 A JP H0742699A JP 8899994 A JP8899994 A JP 8899994A JP 8899994 A JP8899994 A JP 8899994A JP H0742699 A JPH0742699 A JP H0742699A
- Authority
- JP
- Japan
- Prior art keywords
- silencer
- sound deadening
- blower
- opening
- synthetic resin
- 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
- Exhaust Silencers (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】この発明は、単独に又は送風機な
どに組み込まれ、中心部に通風路を持ちポリウレタン系
などの多孔質合成樹脂からなる消音材を備える送風機の
消音装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a silencer for a blower, which is provided alone or incorporated in a blower or the like and has a silencer made of a porous synthetic resin such as polyurethane having a ventilation passage in its central portion.
【0002】[0002]
【従来の技術】図6は従来例の要部断面図示する正面
図、図7は図6の金網の斜視図である。図において、電
動機1aで駆動される渦流送風機などの送風機1bの吐
出口1cに消音装置2が組み込まれる。消音装置2は、
開口3付の底4を両端に持つ筒状のケース5を備え、そ
の内側に、開口3に連通する通風路6を中心部に持ち軟
質の多孔質合成樹脂からなる消音材7を備える。消音材
7は軸方向に複数個が積層され、取扱い気体の動圧で通
風路6が変形しないように、通風路6に筒状の金網8を
内装する。2. Description of the Related Art FIG. 6 is a front view showing a cross-sectional view of a main part of a conventional example, and FIG. 7 is a perspective view of the wire mesh shown in FIG. In the figure, a silencer 2 is incorporated in a discharge port 1c of a blower 1b such as a vortex blower driven by an electric motor 1a. The silencer 2
A cylindrical case 5 having a bottom 4 with an opening 3 at both ends is provided, and a sound deadening material 7 made of a soft porous synthetic resin having an air passage 6 communicating with the opening 3 at the center is provided inside thereof. A plurality of sound deadening materials 7 are laminated in the axial direction, and a tubular wire net 8 is provided in the ventilation passage 6 so that the ventilation passage 6 is not deformed by the dynamic pressure of the handled gas.
【0003】[0003]
【発明が解決しようとする課題】一般に多孔質合成樹脂
は、1mを超えるブロックとして形成される。消音性能
として不適当な周囲の6面を除き、ブロックから30〜
100mm程度の厚さの板に切り出す。この板をプレス
で打ち抜き通風路6を持つ消音材7を得る。この消音材
7を、前記従来例のように金網8に嵌め込み積層する。
断面が適当な寸法を持てば、消音装置2の消音性能は長
いほど向上し、100〜1000mm程度である。しか
し、金網8はざらざらしていて嵌め込みの作業が困難で
時間を要する。また、消音材7は軟質であり金網8との
摩擦のため、隣接する消音材7の間に隙間が発生しやす
い。この隙間が騒音を外部に洩らすことはよく知られて
いて、消音性能を低下させる。Generally, a porous synthetic resin is formed as a block exceeding 1 m. 30 ~ from the block except for the surrounding 6 surfaces
Cut out into a plate having a thickness of about 100 mm. This plate is punched by a press to obtain a sound deadening material 7 having an air passage 6. The sound deadening material 7 is fitted into the wire mesh 8 and laminated as in the conventional example.
If the cross section has an appropriate size, the muffling performance of the muffling device 2 improves as the length increases, and is about 100 to 1000 mm. However, the wire netting 8 is rough and the fitting work is difficult, which requires time. Further, since the sound deadening material 7 is soft and rubs against the wire netting 8, a gap is likely to occur between the adjacent sound deadening materials 7. It is well known that this gap leaks noise to the outside, which reduces the silencing performance.
【0004】この発明の目的は、中心部に通風路を持ち
多孔質合成樹脂からなる消音材の積層作業の困難性と、
隙間による消音性能の低下とを排除できる送風機の消音
装置を提供することにある。The object of the present invention is to make it difficult to stack a sound deadening material having a ventilation passage in the center and made of a porous synthetic resin,
An object of the present invention is to provide a muffling device for a blower that can eliminate deterioration in muffling performance due to a gap.
【0005】[0005]
【課題を解決するための手段】発明1の送風機の消音装
置は、開口付の底を両端に持つ筒状ケースの内側に、前
記開口に連通する通風路を中心部に持ち多孔質合成樹脂
からなる消音材を備える送風機の消音装置において、軸
方向に積層した前記消音材の前記通風路の外側を軸方向
の棒で串刺しするものである。このとき、発明2は、前
記棒を、通風路を中心部に持ち前記ケースの内側に接す
る外形を持つ保持板に固着するものであり、発明3は隣
接する前記消音材の前記通風路を偏位又は異なる形状に
して連続する前記通風路を屈曲させるものである。According to another aspect of the present invention, there is provided a silencer for a blower, which is made of a porous synthetic resin having an air passage communicating with the opening inside a cylindrical case having a bottom with an opening at both ends. In a muffler of a blower including the following sound deadening material, the outside of the ventilation passage of the sound deadening material laminated in the axial direction is skewered with an axial rod. At this time, Invention 2 is to fix the rod to a holding plate having an air passage in the center and having an outer shape in contact with the inside of the case, and Invention 3 is to dispose the air passage of the adjacent sound deadening member in a biased manner. The ventilation passages are formed in different positions or have different shapes, and the continuous ventilation passages are bent.
【0006】発明4の送風機の消音装置は、開口付の底
を両端に持つ筒状ケースの内側に、前記開口に連通する
通風路を中心部に持ち多孔質合成樹脂からなる消音材を
備える送風機の消音装置において、前記消音材を前記両
底にわたる1個の多孔質合成樹脂から形成するものであ
る。このとき、発明5は、前記消音材の外形から前記通
風路に続く軸方向のスリットを設けるものであり、発明
6は、前記通風路に筒状の金網を内装するものである。A silencer for a blower according to a fourth aspect of the present invention is a blower including a silencer made of a porous synthetic resin, having a ventilation passage communicating with the opening at the center, inside a cylindrical case having a bottom with an opening at both ends. In the sound deadening device, the sound deadening material is formed of a single porous synthetic resin covering the both bottoms. At this time, a fifth aspect of the invention is to provide an axial slit continuing from the outer shape of the sound deadening material to the air passage, and a sixth aspect is to provide a tubular wire net in the air passage.
【0007】発明7の送風機の消音装置は、開口付の底
を両端に持つ筒状ケースの内側に、前記開口に連通する
通風路を中心部に持ち多孔質合成樹脂からなる消音材を
備える送風機の消音装置において、前記筒状ケースの内
壁に軸方向に連続する抜け止め突起を形成し、積層した
前記消音材に抜け止め突起が食い込む凹部を形成するも
のである。A muffler for a blower according to a seventh aspect of the present invention is a blower comprising a cylindrical case having a bottom with an opening at both ends, and a silencer made of a porous synthetic resin having a ventilation path communicating with the opening in the center. In the sound deadening device described above, a retaining protrusion that is continuous in the axial direction is formed on the inner wall of the cylindrical case, and a recess is formed in the laminated sound deadening material that the retaining protrusion bites into.
【0008】[0008]
【作用】発明1によれば、ざらざらした金網を使用しな
いで棒で串刺しするので、中心部に通風路を持ち多孔質
合成樹脂からなる消音材の積層作業の困難性を排除でき
る。また、金網との摩擦がないので、隣接する消音材の
間に隙間が発生せず、消音性能の低下を排除できる。そ
して、金網の流体損失をなくする。このとき、発明2に
よれば、ケースに対して位置が確保される保持板は複数
の棒の相互位置関係を確実に保持して串刺しが簡単にな
り、発明3によれば、屈曲する通風路は騒音を更に低下
させる。According to the first aspect of the present invention, since the wire rod is skewered without using a rough wire net, it is possible to eliminate the difficulty of laminating the silencing material made of porous synthetic resin having an air passage in the center. Further, since there is no friction with the wire mesh, no gap is generated between the adjacent sound deadening materials, and the deterioration of the sound deadening performance can be eliminated. And the fluid loss of the wire mesh is eliminated. At this time, according to the second aspect of the present invention, the holding plate whose position is ensured with respect to the case surely holds the mutual positional relationship of the plurality of rods and simplifies the skewering. Further reduces noise.
【0009】発明4によれば、ケース全長にわたり消音
材は1個となり、積層作業そのものが排除できる。ま
た、積層しないので、隣接する消音材の間の隙間が本来
的に存在せず、消音性能の低下を排除できる。このと
き、発明5によれば、スリットで消音材の外形と通風路
の形成が連続に可能となり、発明6によれば、消音材
は、金網により取扱い気体の動圧で変形する恐れが全く
なくなるし、スリットにより金網の装着も簡単である。According to the invention 4, the number of the sound deadening material is one over the entire length of the case, and the laminating operation itself can be eliminated. In addition, since they are not laminated, there is essentially no gap between the adjacent sound deadening materials, and the deterioration of the sound deadening performance can be eliminated. At this time, according to the invention 5, the outer shape of the sound deadening material and the ventilation passage can be continuously formed by the slit, and according to the invention 6, the sound deadening material has no fear of being deformed by the dynamic pressure of the gas handled by the wire mesh. However, the slits make it easy to attach the wire mesh.
【0010】発明7によれば、筒状ケースの抜け止め突
起が消音材の凹部に食い込んで積層した消音材の全体形
状を確保する。According to the seventh aspect of the present invention, the retaining protrusion of the cylindrical case bites into the recess of the sound deadening material to secure the entire shape of the laminated sound deadening material.
【0011】[0011]
【実施例】図1は実施例1の断面図、図2は図1の消音
材の組立て斜視図であり、図3は実施例2の断面図であ
り、図4は実施例3の断面図であり、図5は実施例4の
消音材の組立て斜視図であり、図8は実施例5の消音材
の組立て斜視図、図9は図8の部分左側面図である。従
来例及び各図において同一符号をつけるものはおよそ同
一機能を持ち、重複説明を省くこともある。1 is a sectional view of the first embodiment, FIG. 2 is an assembled perspective view of the sound deadening material of FIG. 1, FIG. 3 is a sectional view of the second embodiment, and FIG. 4 is a sectional view of the third embodiment. 5 is an assembled perspective view of the sound deadening material of the fourth embodiment, FIG. 8 is an assembled perspective view of the sound deadening material of the fifth embodiment, and FIG. 9 is a partial left side view of FIG. In the conventional example and in each drawing, those denoted by the same reference numerals have approximately the same function, and duplicate explanation may be omitted.
【0012】図1及び図2において、消音装置10は、
開口3付の底4を両端に持つ筒状のケース5を備え、そ
の内側に、開口3に連通する通風路6を中心部に持ち軟
質の多孔質合成樹脂からなる消音材11を備える。実施
例の特徴として、消音材11は軸方向に複数個が積層さ
れ、取扱い気体の動圧で通風路6が変形しないよう、消
音材11は通風路6の外側の孔12が軸方向の棒13で
串刺しにされる。そして、棒13を、通風路6を中心部
に持ちケース5の内側に接する外形を持つ保持板14に
固着すれば、少量生産のときに作業性がよい。また、多
量生産のときには治工具を使用すれば、孔12も保持板
14も要しないで、複数の棒13で軟質な消音材11を
串刺しできる。In FIGS. 1 and 2, the muffling device 10 is
A cylindrical case 5 having a bottom 4 with an opening 3 at both ends is provided, and a silencer 11 made of a soft porous synthetic resin having an air passage 6 communicating with the opening 3 at the center is provided inside thereof. A feature of the embodiment is that a plurality of sound deadening materials 11 are stacked in the axial direction, and the sound deadening material 11 has a hole 12 on the outer side of the airflow path 6 in the axial direction so that the air flow path 6 is not deformed by the dynamic pressure of the handled gas. It is skewered at 13. Then, if the rod 13 is fixed to the holding plate 14 having the outer shape that has the ventilation passage 6 at the center and is in contact with the inside of the case 5, workability is good at the time of small-quantity production. Further, in the case of mass production, if a jig is used, the soft sound deadening material 11 can be skewered with a plurality of rods 13 without using the hole 12 and the holding plate 14.
【0013】図3に示す実施例2又は図4に示す実施例
3において、隣接する消音材21及び22又は31、3
2及び33の通風路24又は34を偏位若しくは異なる
形状にして連続する通風路24又は34を屈曲させる。
棒13がここでも使用される。屈曲する通風路は消音性
能がよいことは、よく知られている。前記実施例1、2
又は3によれば、ざらざらした金網を使用しないで棒1
3で串刺しするので、中心部に通風路を持ち多孔質合成
樹脂からなる消音材の積層作業の困難性を排除できる。
また、金網との摩擦がなくて棒13との摩擦は小さいの
で、隣接する消音材の間に隙間が発生せず、消音性能の
低下を排除できる。そして、金網の流体損失をなくす
る。In the second embodiment shown in FIG. 3 or the third embodiment shown in FIG. 4, adjacent sound deadening materials 21 and 22 or 31, 3 are provided.
The ventilation passages 24 or 34 of 2 and 33 are deviated or made into a different shape to bend the continuous ventilation passages 24 or 34.
The bar 13 is also used here. It is well known that a curved ventilation passage has good sound deadening performance. Examples 1 and 2
Or according to 3, the rod 1 without the use of rough wire mesh
Since it is skewered at 3, it is possible to eliminate the difficulty of stacking the sound deadening material made of porous synthetic resin with an air passage in the center.
Further, since there is no friction with the wire mesh and a small friction with the rod 13, no gap is generated between the adjacent sound deadening materials, and the deterioration of the sound deadening performance can be eliminated. And the fluid loss of the wire mesh is eliminated.
【0014】図5に示す実施例4において、ケースは図
示しないが、図1、図3又は図4に示す開口付の底を両
端に持つ筒状のケース5と同一である。そのようなケー
スの内側に、開口に連通する通風路41を中心部に持
ち、多孔質合成樹脂からなる消音材42を、前記両底に
わたる1個の多孔質合成樹脂から形成する。このような
長い消音材42は、軸方向に配置され軸方向に振動する
振動刃物で形成できる。振動刃物の移動をNC制御すれ
ば、消音材42の外形43も通風路41も形成が早い。
このとき、消音材42の外形43から通風路41に続く
軸方向のスリット44を設ければ、外形43と通風路4
1が連続して形成できるし、通風路41の中心に細い孔
をレーザ光線で穿孔して振動刃物を挿通してから通風路
41をスリット44なしに独立して形成できる。消音材
42の長さの割りに断面積が小さく、取扱い気体の動圧
で変形する恐れがあれば、通風路42に筒状の金網44
を内装するとよい。このとき、スリット44があれば金
網45の装着作業が簡単になるし、スリット44を径方
向に波うたしてもよい。また、金網45に代えて棒13
を使用してもよい。In Embodiment 4 shown in FIG. 5, the case is not shown, but is the same as the cylindrical case 5 having the bottom with an opening at both ends shown in FIG. 1, FIG. 3 or FIG. Inside such a case, a sound deadening material 42 having a ventilation path 41 communicating with the opening at the center and made of a porous synthetic resin is formed from one porous synthetic resin covering both the bottoms. Such a long silencing material 42 can be formed by a vibrating blade that is arranged in the axial direction and vibrates in the axial direction. If the movement of the vibrating blade is NC controlled, the outer shape 43 of the sound deadening member 42 and the ventilation passage 41 are formed quickly.
At this time, if an axial slit 44 is provided from the outer shape 43 of the sound deadening member 42 to the air passage 41, the outer shape 43 and the air passage 4 can be formed.
1 can be continuously formed, or a thin hole can be formed in the center of the ventilation path 41 by a laser beam to insert a vibrating blade, and then the ventilation path 41 can be independently formed without the slit 44. If the cross-sectional area is small relative to the length of the sound deadening material 42 and there is a risk of deformation due to the dynamic pressure of the handling gas, a tubular wire net 44 may be provided in the ventilation passage 42.
It is good to decorate. At this time, if the slit 44 is provided, the work of attaching the wire net 45 is simplified, and the slit 44 may be waved in the radial direction. Also, instead of the wire net 45, the rod 13
May be used.
【0015】前記実施例4によれば、中心部に通風路4
1を持ち多孔質合成樹脂からなる消音材42の積層作業
そのものが排除できる。また、積層しないので、隣接す
る消音材の間の隙間が本来的に存在せず、消音性能の低
下を排除できる。図8及び図9に示す実施例5におい
て、筒状ケース5の内壁に軸方向に連続する抜け止め突
起52を形成し、積層した消音材51に抜け止め突起5
2が食い込む凹部を形成する。実施例5によれば、筒状
ケース5の抜け止め突起52が消音材51の凹部に食い
込んで積層した消音材51の全体形状を確保する。な
お、抜け止め突起52には、図のようにダブテール形や
T字形やクリスマスツリー形などがある。According to the fourth embodiment, the ventilation passage 4 is provided at the center.
It is possible to eliminate the work of laminating the sound deadening material 42 having No. 1 and made of porous synthetic resin. In addition, since they are not laminated, there is essentially no gap between the adjacent sound deadening materials, and the deterioration of the sound deadening performance can be eliminated. In Example 5 shown in FIG. 8 and FIG. 9, a retaining protrusion 52 that is continuous in the axial direction is formed on the inner wall of the tubular case 5, and the retaining protrusion 5 is attached to the laminated sound deadening material 51.
2 forms a recess that bites into. According to the fifth embodiment, the retaining protrusions 52 of the tubular case 5 bite into the recesses of the sound deadening material 51 to ensure the overall shape of the laminated sound deadening material 51. The retaining projection 52 has a dovetail shape, a T-shape, a Christmas tree shape, etc., as shown in the figure.
【0016】[0016]
【発明の効果】発明1の送風機の消音装置によれば、棒
で串刺しするので、消音材の積層作業が簡単であるとい
う効果があり、また、金網との摩擦がないので、隣接す
る消音材の間に隙間が発生せず、消音性能の低下を排除
でき、金網の流体損失がないという効果がある。発明2
によれば、保持板により複数の棒の相互位置関係を確実
に保持して串刺しが簡単になり、発明3によれば、屈曲
する通風路は騒音を更に低下させるという効果がある。According to the muffler of the blower of the first aspect of the invention, there is an effect that the sound deadening material is easily laminated because it is skewered by a stick, and there is no friction with the wire mesh, so that the adjacent sound deadening material is There is no gap between the two, and it is possible to eliminate a decrease in sound deadening performance, and there is an effect that there is no fluid loss in the wire mesh. Invention 2
According to the invention, the holding plate surely holds the mutual positional relationship of the plurality of rods and simplifies the skewering. According to the third aspect, the bent ventilation passage has an effect of further reducing noise.
【0017】発明4の送風機の消音装置によれば、ケー
ス全長にわたり消音材は1個となり、積層作業そのもの
が排除できるという効果があり、また、積層しないの
で、隣接する消音材の間の隙間が本来的に存在せず、消
音性能の低下を排除できるという効果がある。発明5に
よれば、スリットで消音材の外形と通風路の形成が連続
に可能となり、発明6によれば、金網により消音材は取
扱い気体の動圧で変形する恐れが全くなくなるし、スリ
ットにより金網の装着も簡単であるという効果がある。According to the muffler of the blower of the invention 4, there is an effect that only one muffling material is provided over the entire length of the case, and the laminating work itself can be eliminated. Further, since the muffling is not performed, the gap between the adjacent muffling materials is eliminated. It does not exist by nature, and has the effect of eliminating a decrease in silencing performance. According to the invention 5, the outer shape of the sound deadening material and the formation of the ventilation passage can be continuously formed by the slit, and according to the invention 6, the sound deadening material is completely prevented from being deformed by the dynamic pressure of the handling gas due to the wire mesh, and the slit prevents the sound deadening material from being deformed. The effect is that it is easy to attach the wire mesh.
【0018】発明7によれば、筒状ケースの抜け止め突
起が消音材の凹部に食い込んで積層した消音材の全体形
状を確保するから、消音材の積層作業が簡単であるとい
う効果があり、また、金網との摩擦がないので、隣接す
る消音材の間に隙間が発生せず、消音性能の低下を排除
でき、金網の流体損失がないという効果がある。According to the invention 7, since the retaining projection of the cylindrical case bites into the recess of the sound deadening material to secure the entire shape of the laminated sound deadening material, there is an effect that the work of stacking the sound deadening material is easy. Further, since there is no friction with the wire netting, there is no gap between the adjacent sound deadening materials, the reduction in sound deadening performance can be eliminated, and there is an effect that there is no fluid loss in the wire netting.
【図1】実施例1の断面図FIG. 1 is a sectional view of a first embodiment.
【図2】図1の消音材の組立て斜視図FIG. 2 is an assembled perspective view of the sound deadening material of FIG.
【図3】実施例2の断面図FIG. 3 is a sectional view of the second embodiment.
【図4】実施例3の断面図FIG. 4 is a sectional view of the third embodiment.
【図5】実施例4の消音材の組立て斜視図FIG. 5 is an assembled perspective view of a sound deadening material according to a fourth embodiment.
【図6】従来例の要部断面図示する正面図FIG. 6 is a front view showing a cross-sectional view of a main part of a conventional example.
【図7】図6の金網の斜視図7 is a perspective view of the wire mesh of FIG.
【図8】実施例5の消音材の組立て斜視図FIG. 8 is an assembled perspective view of a sound deadening material according to a fifth embodiment.
【図9】図8の部分左側面図9 is a partial left side view of FIG.
3 開口 4 底 5 ケース 6 通風路 10 消音装置 11 消音材 12 孔 13 棒 14 保持板 21 消音材 22 消音材 24 通風路 31 消音材 32 消音材 33 消音材 34 通風路 41 通風路 42 消音材 43 外形 44 スリッ
ト 45 金網 51 消音材 52 抜け止め突起3 Opening 4 Bottom 5 Case 6 Ventilation path 10 Silencing device 11 Silencing material 12 Hole 13 Bar 14 Holding plate 21 Silencing material 22 Silencing material 24 Ventilation passage 31 Silencing material 32 Silencing material 33 Silencing material 34 Silencing material 41 Ventilation material 43 Silencing material 43 Outer shape 44 Slit 45 Wire mesh 51 Sound deadening material 52 Retaining protrusion
Claims (7)
に、前記開口に連通する通風路を中心部に持ち多孔質合
成樹脂からなる消音材を備える送風機の消音装置におい
て、軸方向に積層した前記消音材の前記通風路の外側を
軸方向の棒で串刺しすることを特徴とする送風機の消音
装置。1. A silencer for a blower, comprising a silencer made of porous synthetic resin, having a ventilation passage communicating with the opening in a central portion, inside a cylindrical case having a bottom with an opening at both ends, in an axial direction. A sound deadening device for a blower, wherein the outside of the ventilation passage of the sound deadening material laminated on a sheet is skewered with an axial rod.
て、前記棒を、通風路を中心部に持ち前記ケースの内側
に接する外形を持つ保持板に固着することを特徴とする
送風機の消音装置。2. A muffler for a blower according to claim 1, wherein the rod is fixed to a holding plate having an air passage in the center and having an outer shape in contact with the inside of the case. .
おいて、隣接する前記消音材の前記通風路を偏位又は異
なる形状にして連続する前記通風路を屈曲させることを
特徴とする送風機の消音装置。3. The muffler for a blower according to claim 1, wherein the ventilation passages of the adjacent silencers are displaced or have different shapes to bend the continuous ventilation passage. Silencer.
に、前記開口に連通する通風路を中心部に持ち多孔質合
成樹脂からなる消音材を備える送風機の消音装置におい
て、前記消音材を前記両底にわたる1個の多孔質合成樹
脂から形成することを特徴とする送風機の消音装置。4. A silencer for a blower, comprising a cylindrical case having a bottom with an opening at both ends, and a silencer made of porous synthetic resin having a ventilation passage communicating with the opening in a central portion thereof. A silencer for a blower, characterized in that the material is formed from one porous synthetic resin covering the both bottoms.
て、前記消音材の外形から前記通風路に続く軸方向のス
リットを設けることを特徴とする送風機の消音装置。5. The silencer for a blower according to claim 4, further comprising an axial slit extending from the outer shape of the silencer to the ventilation passage.
おいて、前記通風路に筒状の金網を内装することを特徴
とする送風機の消音装置。6. The silencer for a blower according to claim 4, wherein a cylindrical wire net is provided inside the ventilation passage.
に、前記開口に連通する通風路を中心部に持ち多孔質合
成樹脂からなる消音材を備える送風機の消音装置におい
て、前記筒状ケースの内壁に軸方向に連続する抜け止め
突起を形成し、積層した前記消音材に抜け止め突起が食
い込む凹部を形成することを特徴とする送風機の消音装
置。7. A silencer for a blower, comprising a silencer made of porous synthetic resin, having a ventilation passage communicating with the opening in a central portion, inside a cylindrical case having a bottom with an opening at both ends, A silencer for a blower, characterized in that a retaining protrusion that is continuous in the axial direction is formed on the inner wall of the cylindrical case, and a recess that the retaining protrusion bites into is formed in the laminated sound deadening material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP08899994A JP3275527B2 (en) | 1993-05-28 | 1994-04-27 | Blower silencer |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5-126402 | 1993-05-28 | ||
JP12640293 | 1993-05-28 | ||
JP08899994A JP3275527B2 (en) | 1993-05-28 | 1994-04-27 | Blower silencer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0742699A true JPH0742699A (en) | 1995-02-10 |
JP3275527B2 JP3275527B2 (en) | 2002-04-15 |
Family
ID=26430315
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP08899994A Expired - Fee Related JP3275527B2 (en) | 1993-05-28 | 1994-04-27 | Blower silencer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3275527B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100419001B1 (en) * | 2001-02-28 | 2004-02-14 | 주식회사 대우일렉트로닉스 | Silencer assembly |
US7411601B2 (en) | 2004-08-03 | 2008-08-12 | Seiko Epson Corporation | Exposure head |
CN102392718A (en) * | 2011-10-01 | 2012-03-28 | 韩杰 | Silencer |
JP2018189006A (en) * | 2017-04-28 | 2018-11-29 | Kawamoto Gec株式会社 | Muffler for blower |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4185857B2 (en) | 2003-12-15 | 2008-11-26 | 株式会社神戸製鋼所 | silencer |
-
1994
- 1994-04-27 JP JP08899994A patent/JP3275527B2/en not_active Expired - Fee Related
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100419001B1 (en) * | 2001-02-28 | 2004-02-14 | 주식회사 대우일렉트로닉스 | Silencer assembly |
US7411601B2 (en) | 2004-08-03 | 2008-08-12 | Seiko Epson Corporation | Exposure head |
US7782351B2 (en) | 2004-08-03 | 2010-08-24 | Seiko Epson Corporation | Exposure head |
CN102392718A (en) * | 2011-10-01 | 2012-03-28 | 韩杰 | Silencer |
JP2018189006A (en) * | 2017-04-28 | 2018-11-29 | Kawamoto Gec株式会社 | Muffler for blower |
Also Published As
Publication number | Publication date |
---|---|
JP3275527B2 (en) | 2002-04-15 |
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