JPH0435531Y2

JPH0435531Y2 -

Info

Publication number: JPH0435531Y2
Application number: JP1987009373U
Authority: JP
Priority date: 1987-01-27
Filing date: 1987-01-27
Publication date: 1992-08-24
Also published as: JPS63118322U

Description

[Detailed explanation of the idea]

産業上の利用分野本考案は、過給機の消音器に関するもので、詳
しくは、ブロワインペラとタービン翼車の間に軸
受を有する過給機のブロワ吸込口側に取付けられ
る消音器の改良と、その取付構造の改良に関する
ものである。従来の技術従来のこの種の過給機は、たとえば、第４図に
示すような構成からなつている。第４図におい
て、１１はブロワ車室、１２はブロワ吸入口、１
３はブロワインペラ、１４はブロワ吸入口側に取
付けられた消音器である。そして、消音器１４
は、大外板１５と、吸込金網１６と、小外板１７
と、前記大外板１５と小外板１７の間に設けられ
た間隔管１８と、この間隔管１８の中を通して大
外板１５と小外板１７を締結している通しボルト
１９などとからなり、かつ、これらの各部材が、
すべて分解できるように締結されている。また消
音器１４は、ブロワ車室１１の小径個所、つま
り、ブロワ吸入口１２の所で、取付バンド２０に
よつて取付けられている。考案が解決しようとする問題点前述のように、従来の過給機における消音器１
４は、ブロワ車室１１との結合をブロワ車室１１
の小径個所で行なつているので、消音器１４の小
外板１７を強度メンバーとして、その強度を上げ
て丈夫にする必要があるため、重量の増加とコス
トの増加が避けられないという問題点があり、ま
た消音器１４の各部材が分解可能に締結されてい
るため、構造が複雑になつているうえ、いつそ
う、重量が増加するという問題点がある。本考案
は、このような問題点を解決することを目的とす
るものである。問題点を解決するための手段ブロワ車室の大径個所の外面には、ブロワ吸入
口側のほうに突出している比較的短いほぼ同一突
出長さの消音器取付座を複数個設け、消音器の外
筒を、その大径個所の直径に対応する直径にする
とともに、多孔薄板で筒状に形成した強度メンバ
ーとし、しかも、その外筒には、前記各消音器取
付座のほうに向けてそれぞれ延長状にステーを形
成するとともに、前記ステーの長さを取付けるべ
きブロワ車室の渦巻室の形状に沿わしめてそれぞ
れ異ならしめて、対応する消音器取付座にそれぞ
れのステーを取付けた。作用消音器の外筒は比較的大径の筒状となつている
ため、薄板製でも、十分に強度メンバーとなり、
したがつて、軽量となり、また多数穿たれた孔に
より、吸込金網の機能も有する。しかも、前記外
筒に延長状に形成された各ステーの長さが、取付
けられるべきブロワ車室の渦巻室の形状に沿つて
それぞれ異なつているので、ブロワ車室に設けら
れるべき消音器取付座は、全数ほぼ同じ長さにす
ることができて、ブロワ車室の鋳物形状が単純化
され、軽量化とコスト低減が可能となる。実施例第１図は本考案の一実施例を示し、第２図と第
３図は第１図の一部を示している。第１図におい
て、１はブロワ車室、２はブロワ吸入口、３はブ
ロワインペラ、４は後述する消音器取付座、５は
消音器、６は取付ねじまたは取付ボルトである。すなわち、消音器取付座４は、ブロワ車室１の
外面の大径個所に設けられて、具体的には、第２
図にみられるように、ブロワ車室１の渦巻室の中
心角で、90°と180°と270°と360°の４か所に設けら
れていて、いずれも、ブロワ吸込口側のほうに向
いて突出している比較的短いほぼ同一突出長さの
ものからなつている。また消音器５は、外筒５ａ、吸入フイルタ５
ｂ、吸音材５ｃ、後述するステー５ｄ、内筒５
ｅ、内筒吸音材５ｆなどからなつている。そし
て、外筒５ａは、ブロワ車室１の前記大径個所の
直径に対応する内径ｄを有して薄板で筒状に形成
された強度メンバーとなつており、かつ、全周に
多数の孔を有して吸込金網の役目をする。しか
も、外筒５には、前記各消音器取付座４のほうに
向けてそれぞれ延長状に形成されたステー５ｄを
有し、第３図にみられるように、l₁＞l₂＞l₃＞l₄と
長さが異なつていて、つまり、取付けられるべき
ブロワ車室１の渦巻室の形状に沿つてそれぞれ長
さが異なつている。そして、対応する消音器取付
座４に各ステー５ｄが取付ねじまたは取付ボルト
６で螺着されている。いま、第２図にみられる中
心角θと、第３図にみられるステー５ｄの長さｌ
の関係を示せば、第１表のとおりである。 INDUSTRIAL APPLICATION FIELD The present invention relates to a silencer for a supercharger, and more specifically, the present invention relates to an improvement of a silencer installed on the blower suction port side of a supercharger that has a bearing between a blower impeller and a turbine wheel. , relates to improvements in its mounting structure. BACKGROUND ART A conventional supercharger of this type has a configuration as shown in FIG. 4, for example. In Fig. 4, 11 is a blower compartment, 12 is a blower suction port, 1
3 is a blower impeller, and 14 is a silencer attached to the blower suction port side. And the silencer 14
are a large outer panel 15, a suction wire mesh 16, and a small outer panel 17.
, a spacer tube 18 provided between the large outer plate 15 and the small outer plate 17, and a through bolt 19 passing through the spacer tube 18 and fastening the large outer plate 15 and the small outer plate 17. and each of these members is
All are fastened together so that they can be disassembled. Further, the muffler 14 is attached by an attachment band 20 at a small diameter portion of the blower compartment 11, that is, at the blower suction port 12. Problems that the invention attempts to solve As mentioned above, the silencer 1 in the conventional turbocharger
4 connects the blower compartment 11 to the blower compartment 11.
Since the small outer plate 17 of the silencer 14 needs to be used as a strength member to increase its strength and make it durable, there is a problem that an increase in weight and cost are unavoidable. Moreover, since each member of the silencer 14 is fastened in a manner that can be disassembled, the structure is complicated and the weight increases. The present invention aims to solve these problems. Measures to solve the problem A plurality of relatively short silencer mounting seats of approximately the same length protruding toward the blower suction port are provided on the outer surface of the large-diameter portion of the blower compartment. The outer cylinder has a diameter corresponding to the diameter of the large diameter part, and is a strong member formed into a cylindrical shape with a perforated thin plate. Each stay was formed in an extended shape, and the length of each stay was made different according to the shape of the spiral chamber of the blower casing to which it was attached, and each stay was attached to the corresponding muffler mounting seat. Function: The silencer's outer cylinder is cylindrical with a relatively large diameter, so even though it is made of thin plate, it becomes a sufficiently strong member.
Therefore, it is lightweight and also has the function of a suction wire mesh due to the large number of holes. Moreover, since the length of each stay formed in an extension shape on the outer cylinder is different according to the shape of the spiral chamber of the blower casing to which it is to be installed, the silencer mounting seat to be provided in the blower casing is All of the blowers can be made to have approximately the same length, which simplifies the casting shape of the blower casing, making it possible to reduce weight and cost. Embodiment FIG. 1 shows an embodiment of the present invention, and FIGS. 2 and 3 show a part of FIG. 1. In FIG. 1, 1 is a blower compartment, 2 is a blower suction port, 3 is a blower impeller, 4 is a silencer mounting seat (to be described later), 5 is a silencer, and 6 is a mounting screw or bolt. That is, the silencer mounting seat 4 is provided at a large-diameter location on the outer surface of the blower compartment 1, and specifically,
As shown in the figure, they are provided at four central angles of the swirl chamber of the blower casing 1: 90°, 180°, 270°, and 360°, all of which are located toward the blower suction port. It consists of relatively short pieces of approximately the same length that protrude in opposite directions. Further, the silencer 5 includes an outer cylinder 5a, a suction filter 5
b, sound absorbing material 5c, stay 5d (described later), inner cylinder 5
e, an inner cylinder sound absorbing material 5f, etc. The outer cylinder 5a is a strong member formed in a cylindrical shape from a thin plate and has an inner diameter d corresponding to the diameter of the large diameter portion of the blower casing 1, and has many holes around the entire circumference. It acts as a suction wire mesh. Moreover, the outer cylinder 5 has stays 5d extending in the direction of each of the silencer mounting seats 4, and as shown in FIG. 3, l ₁ > l ₂ > l ₃ > l ₄ , that is, the lengths differ according to the shape of the spiral chamber of the blower casing 1 to be installed. Each stay 5d is screwed onto the corresponding silencer mounting seat 4 with a mounting screw or mounting bolt 6. Now, the central angle θ seen in Figure 2 and the length l of the stay 5d seen in Figure 3.
The relationship is shown in Table 1.

【表】また消音器５は、点溶接またはリベツトなど
で、一体的に構成されていて、分解できない構造
からなつていて、内筒５ｅも薄板製で、軽量化さ
れている。第１図に示すように構成された過給機の消音器
５においては、外筒５ａが比較的大径の内径ｄを
有する筒状のものからなつているので、薄板製で
も、十分に強度メンバーとなり、したがつて、軽
量となり、また多数穿たれた孔により、吸込金網
の機能も有する。しかも、外筒５ａに延長状に形
成された各ステー５ｄの長さが、取付けられるべ
きブロワ車室１の渦巻室の形状に沿つて、l₁＞l₂
＞l₃＞l₄と、それぞれ異なつているので、ブロワ
車室１に設けられるべき消音器取付座４は、全数
ほぼ同じ長さにすることができて、ブロワ車室１
の鋳物形状が単純化され、軽量化とコスト低減が
可能となる。考案の効果本考案は、消音器の外筒が比較的大径の筒状の
ものからなるため、薄板製でも、十分に強度メン
バーとなり、したがつて、軽量となり、かつ、多
数の孔を有するので、吸込金網の役目をもする。
また消音器を取付けるために、ブロワ車室の外面
の大径個所には、ブロワ吸入口側のほうに向いて
突出している複数個の消音器取付座を備えている
が、前記外筒に延長状に形成されて前記消音器取
付座のほうに向いている各ステーの長さが、取付
けられるべきブロワ車室の渦巻室の形状に沿つ
て、それぞれ異なつているので、前記消音器取付
座の全数をほぼ同一突出長さにすることができ
て、ブロワ車室の鋳物形状が単純化され、したが
つて、軽量化とコスト低減とを図ることができ
る。[Table] Furthermore, the silencer 5 is integrally constructed by spot welding or riveting, and has a structure that cannot be disassembled, and the inner cylinder 5e is also made of a thin plate to reduce weight. In the supercharger silencer 5 constructed as shown in FIG. 1, the outer cylinder 5a is made of a cylindrical member with a relatively large inner diameter d, so even if it is made of a thin plate, it has sufficient strength. It is therefore lightweight, and also has the function of a suction wire mesh due to the large number of holes. Moreover, the length of each stay 5d formed in an extension shape on the outer cylinder 5a is in accordance with the shape of the spiral chamber of the blower casing 1 to which it is attached, so that l ₁ > l ₂
> l ₃ > l ₄ , so all of the silencer mounting seats 4 to be provided in the blower compartment 1 can be made to have approximately the same length, and the silencer mounting seats 4 to be provided in the blower compartment 1 can be
The casting shape is simplified, making it possible to reduce weight and cost. Effects of the invention In the present invention, since the outer cylinder of the silencer is made of a cylinder with a relatively large diameter, even if it is made of thin plate, it can be a sufficiently strong member, and therefore it is lightweight and has a large number of holes. Therefore, it also acts as a suction wire mesh.
In addition, in order to mount a silencer, the large-diameter portion of the outer surface of the blower compartment is equipped with a plurality of silencer mounting seats that protrude toward the blower suction port. The length of each stay, which is shaped like a shape and faces the muffler mounting seat, is different along the shape of the spiral chamber of the blower casing to which it is to be installed, so that the length of each stay facing the muffler mounting seat is Since all the blowers can be made to have approximately the same protruding length, the casting shape of the blower casing can be simplified, and the weight and cost can therefore be reduced.

[Brief explanation of the drawing]

第１図は本考案の一実施例を示した一部切欠断
面正面図、第２図は第１図のＡ方向からみたブロ
ワ車室の縮小側面図、第３図は第１図の消音器の
縮小斜視図、第４図は従来の技術の一例を示した
一部切欠断面正面図である。１……ブロワ車室、２……ブロワ吸入口、３…
…ブロワインペラ、４……消音器取付座、５……
消音器、５ａ……外筒、５ｄ……ステー、６……
取付ねじまたは取付ボルト。 Fig. 1 is a partially cutaway front view showing an embodiment of the present invention, Fig. 2 is a reduced side view of the blower compartment seen from direction A in Fig. 1, and Fig. 3 is the silencer shown in Fig. 1. FIG. 4 is a partially cutaway sectional front view showing an example of the conventional technique. 1...Blower compartment, 2...Blower inlet, 3...
...Blower impeller, 4...Silencer mounting seat, 5...
Silencer, 5a...outer cylinder, 5d...stay, 6...
Mounting screws or bolts.

Claims

[Scope of utility model registration request]

In a supercharger that has a bearing between the blower impeller and the turbine wheel, and also has a muffler installed on the blower inlet side, a large diameter part on the outer surface of the blower casing has a bearing on the blower inlet side. The muffler is provided with a plurality of muffler mounting seats having relatively short and substantially the same protruding length that protrude facing each other, and the muffler has a cylindrical perforated thin plate having a diameter corresponding to the diameter of the large diameter portion. furthermore, the outer cylinder has stays formed in an extended shape toward each of the silencer mounting seats, and the length of each of the stays is A silencer for a supercharger, characterized in that each of the stays has a different shape along the shape of a spiral chamber of a blower casing to which the stay is attached, and each of the stays is attached to a corresponding silencer mounting seat.